Commit | Line | Data |
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c906108c | 1 | /* DWARF 2 debugging format support for GDB. |
917c78fc | 2 | |
0b302171 | 3 | Copyright (C) 1994-2012 Free Software Foundation, Inc. |
c906108c SS |
4 | |
5 | Adapted by Gary Funck (gary@intrepid.com), Intrepid Technology, | |
6 | Inc. with support from Florida State University (under contract | |
7 | with the Ada Joint Program Office), and Silicon Graphics, Inc. | |
8 | Initial contribution by Brent Benson, Harris Computer Systems, Inc., | |
9 | based on Fred Fish's (Cygnus Support) implementation of DWARF 1 | |
7ce59000 | 10 | support. |
c906108c | 11 | |
c5aa993b | 12 | This file is part of GDB. |
c906108c | 13 | |
c5aa993b JM |
14 | This program is free software; you can redistribute it and/or modify |
15 | it under the terms of the GNU General Public License as published by | |
a9762ec7 JB |
16 | the Free Software Foundation; either version 3 of the License, or |
17 | (at your option) any later version. | |
c906108c | 18 | |
a9762ec7 JB |
19 | This program is distributed in the hope that it will be useful, |
20 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
21 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
22 | GNU General Public License for more details. | |
c906108c | 23 | |
c5aa993b | 24 | You should have received a copy of the GNU General Public License |
a9762ec7 | 25 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c | 26 | |
21b2bd31 DE |
27 | /* FIXME: Various die-reading functions need to be more careful with |
28 | reading off the end of the section. | |
29 | E.g., load_partial_dies, read_partial_die. */ | |
30 | ||
c906108c SS |
31 | #include "defs.h" |
32 | #include "bfd.h" | |
c906108c SS |
33 | #include "symtab.h" |
34 | #include "gdbtypes.h" | |
c906108c | 35 | #include "objfiles.h" |
fa8f86ff | 36 | #include "dwarf2.h" |
c906108c SS |
37 | #include "buildsym.h" |
38 | #include "demangle.h" | |
50f182aa | 39 | #include "gdb-demangle.h" |
c906108c | 40 | #include "expression.h" |
d5166ae1 | 41 | #include "filenames.h" /* for DOSish file names */ |
2e276125 | 42 | #include "macrotab.h" |
c906108c SS |
43 | #include "language.h" |
44 | #include "complaints.h" | |
357e46e7 | 45 | #include "bcache.h" |
4c2df51b DJ |
46 | #include "dwarf2expr.h" |
47 | #include "dwarf2loc.h" | |
9219021c | 48 | #include "cp-support.h" |
72bf9492 | 49 | #include "hashtab.h" |
ae038cb0 DJ |
50 | #include "command.h" |
51 | #include "gdbcmd.h" | |
edb3359d | 52 | #include "block.h" |
ff013f42 | 53 | #include "addrmap.h" |
94af9270 KS |
54 | #include "typeprint.h" |
55 | #include "jv-lang.h" | |
ccefe4c4 | 56 | #include "psympriv.h" |
9291a0cd TT |
57 | #include "exceptions.h" |
58 | #include "gdb_stat.h" | |
96d19272 | 59 | #include "completer.h" |
34eaf542 | 60 | #include "vec.h" |
98bfdba5 | 61 | #include "c-lang.h" |
a766d390 | 62 | #include "go-lang.h" |
98bfdba5 | 63 | #include "valprint.h" |
3019eac3 | 64 | #include "gdbcore.h" /* for gnutarget */ |
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 | ||
95554aad TT |
151 | typedef struct dwarf2_per_cu_data *dwarf2_per_cu_ptr; |
152 | DEF_VEC_P (dwarf2_per_cu_ptr); | |
153 | ||
9cdd5dbd DE |
154 | /* Collection of data recorded per objfile. |
155 | This hangs off of dwarf2_objfile_data_key. */ | |
156 | ||
6502dd73 DJ |
157 | struct dwarf2_per_objfile |
158 | { | |
dce234bc PP |
159 | struct dwarf2_section_info info; |
160 | struct dwarf2_section_info abbrev; | |
161 | struct dwarf2_section_info line; | |
dce234bc PP |
162 | struct dwarf2_section_info loc; |
163 | struct dwarf2_section_info macinfo; | |
cf2c3c16 | 164 | struct dwarf2_section_info macro; |
dce234bc PP |
165 | struct dwarf2_section_info str; |
166 | struct dwarf2_section_info ranges; | |
3019eac3 | 167 | struct dwarf2_section_info addr; |
dce234bc PP |
168 | struct dwarf2_section_info frame; |
169 | struct dwarf2_section_info eh_frame; | |
9291a0cd | 170 | struct dwarf2_section_info gdb_index; |
ae038cb0 | 171 | |
8b70b953 TT |
172 | VEC (dwarf2_section_info_def) *types; |
173 | ||
be391dca TT |
174 | /* Back link. */ |
175 | struct objfile *objfile; | |
176 | ||
d467dd73 | 177 | /* Table of all the compilation units. This is used to locate |
10b3939b | 178 | the target compilation unit of a particular reference. */ |
ae038cb0 DJ |
179 | struct dwarf2_per_cu_data **all_comp_units; |
180 | ||
181 | /* The number of compilation units in ALL_COMP_UNITS. */ | |
182 | int n_comp_units; | |
183 | ||
1fd400ff | 184 | /* The number of .debug_types-related CUs. */ |
d467dd73 | 185 | int n_type_units; |
1fd400ff | 186 | |
d467dd73 DE |
187 | /* The .debug_types-related CUs (TUs). */ |
188 | struct dwarf2_per_cu_data **all_type_units; | |
1fd400ff | 189 | |
ae038cb0 DJ |
190 | /* A chain of compilation units that are currently read in, so that |
191 | they can be freed later. */ | |
192 | struct dwarf2_per_cu_data *read_in_chain; | |
72dca2f5 | 193 | |
348e048f DE |
194 | /* A table mapping .debug_types signatures to its signatured_type entry. |
195 | This is NULL if the .debug_types section hasn't been read in yet. */ | |
196 | htab_t signatured_types; | |
197 | ||
3019eac3 DE |
198 | /* A table mapping DW_AT_dwo_name values to struct dwo_file objects. |
199 | This is NULL if the table hasn't been allocated yet. */ | |
200 | htab_t dwo_files; | |
201 | ||
72dca2f5 FR |
202 | /* A flag indicating wether this objfile has a section loaded at a |
203 | VMA of 0. */ | |
204 | int has_section_at_zero; | |
9291a0cd | 205 | |
ae2de4f8 DE |
206 | /* True if we are using the mapped index, |
207 | or we are faking it for OBJF_READNOW's sake. */ | |
9291a0cd TT |
208 | unsigned char using_index; |
209 | ||
ae2de4f8 | 210 | /* The mapped index, or NULL if .gdb_index is missing or not being used. */ |
9291a0cd | 211 | struct mapped_index *index_table; |
98bfdba5 | 212 | |
7b9f3c50 DE |
213 | /* When using index_table, this keeps track of all quick_file_names entries. |
214 | TUs can share line table entries with CUs or other TUs, and there can be | |
215 | a lot more TUs than unique line tables, so we maintain a separate table | |
216 | of all line table entries to support the sharing. */ | |
217 | htab_t quick_file_names_table; | |
218 | ||
98bfdba5 PA |
219 | /* Set during partial symbol reading, to prevent queueing of full |
220 | symbols. */ | |
221 | int reading_partial_symbols; | |
673bfd45 | 222 | |
dee91e82 | 223 | /* Table mapping type DIEs to their struct type *. |
673bfd45 | 224 | This is NULL if not allocated yet. |
dee91e82 DE |
225 | The mapping is done via (CU/TU signature + DIE offset) -> type. */ |
226 | htab_t die_type_hash; | |
95554aad TT |
227 | |
228 | /* The CUs we recently read. */ | |
229 | VEC (dwarf2_per_cu_ptr) *just_read_cus; | |
6502dd73 DJ |
230 | }; |
231 | ||
232 | static struct dwarf2_per_objfile *dwarf2_per_objfile; | |
c906108c | 233 | |
251d32d9 | 234 | /* Default names of the debugging sections. */ |
c906108c | 235 | |
233a11ab CS |
236 | /* Note that if the debugging section has been compressed, it might |
237 | have a name like .zdebug_info. */ | |
238 | ||
9cdd5dbd DE |
239 | static const struct dwarf2_debug_sections dwarf2_elf_names = |
240 | { | |
251d32d9 TG |
241 | { ".debug_info", ".zdebug_info" }, |
242 | { ".debug_abbrev", ".zdebug_abbrev" }, | |
243 | { ".debug_line", ".zdebug_line" }, | |
244 | { ".debug_loc", ".zdebug_loc" }, | |
245 | { ".debug_macinfo", ".zdebug_macinfo" }, | |
cf2c3c16 | 246 | { ".debug_macro", ".zdebug_macro" }, |
251d32d9 TG |
247 | { ".debug_str", ".zdebug_str" }, |
248 | { ".debug_ranges", ".zdebug_ranges" }, | |
249 | { ".debug_types", ".zdebug_types" }, | |
3019eac3 | 250 | { ".debug_addr", ".zdebug_addr" }, |
251d32d9 TG |
251 | { ".debug_frame", ".zdebug_frame" }, |
252 | { ".eh_frame", NULL }, | |
24d3216f TT |
253 | { ".gdb_index", ".zgdb_index" }, |
254 | 23 | |
251d32d9 | 255 | }; |
c906108c | 256 | |
3019eac3 DE |
257 | /* List of DWO sections. */ |
258 | ||
259 | static const struct dwo_section_names | |
260 | { | |
261 | struct dwarf2_section_names abbrev_dwo; | |
262 | struct dwarf2_section_names info_dwo; | |
263 | struct dwarf2_section_names line_dwo; | |
264 | struct dwarf2_section_names loc_dwo; | |
265 | struct dwarf2_section_names str_dwo; | |
266 | struct dwarf2_section_names str_offsets_dwo; | |
267 | struct dwarf2_section_names types_dwo; | |
268 | } | |
269 | dwo_section_names = | |
270 | { | |
271 | { ".debug_abbrev.dwo", ".zdebug_abbrev.dwo" }, | |
272 | { ".debug_info.dwo", ".zdebug_info.dwo" }, | |
273 | { ".debug_line.dwo", ".zdebug_line.dwo" }, | |
274 | { ".debug_loc.dwo", ".zdebug_loc.dwo" }, | |
275 | { ".debug_str.dwo", ".zdebug_str.dwo" }, | |
276 | { ".debug_str_offsets.dwo", ".zdebug_str_offsets.dwo" }, | |
277 | { ".debug_types.dwo", ".zdebug_types.dwo" }, | |
278 | }; | |
279 | ||
c906108c SS |
280 | /* local data types */ |
281 | ||
0963b4bd | 282 | /* We hold several abbreviation tables in memory at the same time. */ |
57349743 JB |
283 | #ifndef ABBREV_HASH_SIZE |
284 | #define ABBREV_HASH_SIZE 121 | |
285 | #endif | |
286 | ||
107d2387 AC |
287 | /* The data in a compilation unit header, after target2host |
288 | translation, looks like this. */ | |
c906108c | 289 | struct comp_unit_head |
a738430d | 290 | { |
c764a876 | 291 | unsigned int length; |
a738430d | 292 | short version; |
a738430d MK |
293 | unsigned char addr_size; |
294 | unsigned char signed_addr_p; | |
b64f50a1 | 295 | sect_offset abbrev_offset; |
57349743 | 296 | |
a738430d MK |
297 | /* Size of file offsets; either 4 or 8. */ |
298 | unsigned int offset_size; | |
57349743 | 299 | |
a738430d MK |
300 | /* Size of the length field; either 4 or 12. */ |
301 | unsigned int initial_length_size; | |
57349743 | 302 | |
a738430d MK |
303 | /* Offset to the first byte of this compilation unit header in the |
304 | .debug_info section, for resolving relative reference dies. */ | |
b64f50a1 | 305 | sect_offset offset; |
57349743 | 306 | |
d00adf39 DE |
307 | /* Offset to first die in this cu from the start of the cu. |
308 | This will be the first byte following the compilation unit header. */ | |
b64f50a1 | 309 | cu_offset first_die_offset; |
a738430d | 310 | }; |
c906108c | 311 | |
3da10d80 KS |
312 | /* Type used for delaying computation of method physnames. |
313 | See comments for compute_delayed_physnames. */ | |
314 | struct delayed_method_info | |
315 | { | |
316 | /* The type to which the method is attached, i.e., its parent class. */ | |
317 | struct type *type; | |
318 | ||
319 | /* The index of the method in the type's function fieldlists. */ | |
320 | int fnfield_index; | |
321 | ||
322 | /* The index of the method in the fieldlist. */ | |
323 | int index; | |
324 | ||
325 | /* The name of the DIE. */ | |
326 | const char *name; | |
327 | ||
328 | /* The DIE associated with this method. */ | |
329 | struct die_info *die; | |
330 | }; | |
331 | ||
332 | typedef struct delayed_method_info delayed_method_info; | |
333 | DEF_VEC_O (delayed_method_info); | |
334 | ||
e7c27a73 DJ |
335 | /* Internal state when decoding a particular compilation unit. */ |
336 | struct dwarf2_cu | |
337 | { | |
338 | /* The objfile containing this compilation unit. */ | |
339 | struct objfile *objfile; | |
340 | ||
d00adf39 | 341 | /* The header of the compilation unit. */ |
e7c27a73 | 342 | struct comp_unit_head header; |
e142c38c | 343 | |
d00adf39 DE |
344 | /* Base address of this compilation unit. */ |
345 | CORE_ADDR base_address; | |
346 | ||
347 | /* Non-zero if base_address has been set. */ | |
348 | int base_known; | |
349 | ||
e142c38c DJ |
350 | /* The language we are debugging. */ |
351 | enum language language; | |
352 | const struct language_defn *language_defn; | |
353 | ||
b0f35d58 DL |
354 | const char *producer; |
355 | ||
e142c38c DJ |
356 | /* The generic symbol table building routines have separate lists for |
357 | file scope symbols and all all other scopes (local scopes). So | |
358 | we need to select the right one to pass to add_symbol_to_list(). | |
359 | We do it by keeping a pointer to the correct list in list_in_scope. | |
360 | ||
361 | FIXME: The original dwarf code just treated the file scope as the | |
362 | first local scope, and all other local scopes as nested local | |
363 | scopes, and worked fine. Check to see if we really need to | |
364 | distinguish these in buildsym.c. */ | |
365 | struct pending **list_in_scope; | |
366 | ||
f3dd6933 DJ |
367 | /* DWARF abbreviation table associated with this compilation unit. */ |
368 | struct abbrev_info **dwarf2_abbrevs; | |
369 | ||
370 | /* Storage for the abbrev table. */ | |
371 | struct obstack abbrev_obstack; | |
72bf9492 | 372 | |
b64f50a1 JK |
373 | /* Hash table holding all the loaded partial DIEs |
374 | with partial_die->offset.SECT_OFF as hash. */ | |
72bf9492 DJ |
375 | htab_t partial_dies; |
376 | ||
377 | /* Storage for things with the same lifetime as this read-in compilation | |
378 | unit, including partial DIEs. */ | |
379 | struct obstack comp_unit_obstack; | |
380 | ||
ae038cb0 DJ |
381 | /* When multiple dwarf2_cu structures are living in memory, this field |
382 | chains them all together, so that they can be released efficiently. | |
383 | We will probably also want a generation counter so that most-recently-used | |
384 | compilation units are cached... */ | |
385 | struct dwarf2_per_cu_data *read_in_chain; | |
386 | ||
387 | /* Backchain to our per_cu entry if the tree has been built. */ | |
388 | struct dwarf2_per_cu_data *per_cu; | |
389 | ||
390 | /* How many compilation units ago was this CU last referenced? */ | |
391 | int last_used; | |
392 | ||
b64f50a1 JK |
393 | /* A hash table of DIE cu_offset for following references with |
394 | die_info->offset.sect_off as hash. */ | |
51545339 | 395 | htab_t die_hash; |
10b3939b DJ |
396 | |
397 | /* Full DIEs if read in. */ | |
398 | struct die_info *dies; | |
399 | ||
400 | /* A set of pointers to dwarf2_per_cu_data objects for compilation | |
401 | units referenced by this one. Only set during full symbol processing; | |
402 | partial symbol tables do not have dependencies. */ | |
403 | htab_t dependencies; | |
404 | ||
cb1df416 DJ |
405 | /* Header data from the line table, during full symbol processing. */ |
406 | struct line_header *line_header; | |
407 | ||
3da10d80 KS |
408 | /* A list of methods which need to have physnames computed |
409 | after all type information has been read. */ | |
410 | VEC (delayed_method_info) *method_list; | |
411 | ||
96408a79 SA |
412 | /* To be copied to symtab->call_site_htab. */ |
413 | htab_t call_site_htab; | |
414 | ||
3019eac3 DE |
415 | /* Non-NULL if this CU came from a DWO file. */ |
416 | struct dwo_unit *dwo_unit; | |
417 | ||
418 | /* The DW_AT_addr_base attribute if present, zero otherwise | |
419 | (zero is a valid value though). | |
420 | Note this value comes from the stub CU/TU's DIE. */ | |
421 | ULONGEST addr_base; | |
422 | ||
ae038cb0 DJ |
423 | /* Mark used when releasing cached dies. */ |
424 | unsigned int mark : 1; | |
425 | ||
8be455d7 JK |
426 | /* This CU references .debug_loc. See the symtab->locations_valid field. |
427 | This test is imperfect as there may exist optimized debug code not using | |
428 | any location list and still facing inlining issues if handled as | |
429 | unoptimized code. For a future better test see GCC PR other/32998. */ | |
8be455d7 | 430 | unsigned int has_loclist : 1; |
ba919b58 TT |
431 | |
432 | /* These cache the results of producer_is_gxx_lt_4_6. | |
433 | CHECKED_PRODUCER is set if PRODUCER_IS_GXX_LT_4_6 is valid. This | |
434 | information is cached because profiling CU expansion showed | |
435 | excessive time spent in producer_is_gxx_lt_4_6. */ | |
436 | unsigned int checked_producer : 1; | |
437 | unsigned int producer_is_gxx_lt_4_6 : 1; | |
3019eac3 DE |
438 | |
439 | /* Non-zero if DW_AT_addr_base was found. | |
440 | Used when processing DWO files. */ | |
441 | unsigned int have_addr_base : 1; | |
e7c27a73 DJ |
442 | }; |
443 | ||
10b3939b DJ |
444 | /* Persistent data held for a compilation unit, even when not |
445 | processing it. We put a pointer to this structure in the | |
28dee7f5 | 446 | read_symtab_private field of the psymtab. */ |
10b3939b | 447 | |
ae038cb0 DJ |
448 | struct dwarf2_per_cu_data |
449 | { | |
348e048f | 450 | /* The start offset and length of this compilation unit. 2**29-1 |
ae038cb0 | 451 | bytes should suffice to store the length of any compilation unit |
45452591 DE |
452 | - if it doesn't, GDB will fall over anyway. |
453 | NOTE: Unlike comp_unit_head.length, this length includes | |
3019eac3 DE |
454 | initial_length_size. |
455 | If the DIE refers to a DWO file, this is always of the original die, | |
456 | not the DWO file. */ | |
b64f50a1 | 457 | sect_offset offset; |
348e048f | 458 | unsigned int length : 29; |
ae038cb0 DJ |
459 | |
460 | /* Flag indicating this compilation unit will be read in before | |
461 | any of the current compilation units are processed. */ | |
c764a876 | 462 | unsigned int queued : 1; |
ae038cb0 | 463 | |
0d99eb77 DE |
464 | /* This flag will be set when reading partial DIEs if we need to load |
465 | absolutely all DIEs for this compilation unit, instead of just the ones | |
466 | we think are interesting. It gets set if we look for a DIE in the | |
5afb4e99 DJ |
467 | hash table and don't find it. */ |
468 | unsigned int load_all_dies : 1; | |
469 | ||
3019eac3 DE |
470 | /* Non-zero if this CU is from .debug_types. */ |
471 | unsigned int is_debug_types : 1; | |
472 | ||
473 | /* The section this CU/TU lives in. | |
474 | If the DIE refers to a DWO file, this is always the original die, | |
475 | not the DWO file. */ | |
476 | struct dwarf2_section_info *info_or_types_section; | |
348e048f | 477 | |
17ea53c3 JK |
478 | /* Set to non-NULL iff this CU is currently loaded. When it gets freed out |
479 | of the CU cache it gets reset to NULL again. */ | |
ae038cb0 | 480 | struct dwarf2_cu *cu; |
1c379e20 | 481 | |
9cdd5dbd DE |
482 | /* The corresponding objfile. |
483 | Normally we can get the objfile from dwarf2_per_objfile. | |
484 | However we can enter this file with just a "per_cu" handle. */ | |
9291a0cd TT |
485 | struct objfile *objfile; |
486 | ||
487 | /* When using partial symbol tables, the 'psymtab' field is active. | |
488 | Otherwise the 'quick' field is active. */ | |
489 | union | |
490 | { | |
491 | /* The partial symbol table associated with this compilation unit, | |
95554aad | 492 | or NULL for unread partial units. */ |
9291a0cd TT |
493 | struct partial_symtab *psymtab; |
494 | ||
495 | /* Data needed by the "quick" functions. */ | |
496 | struct dwarf2_per_cu_quick_data *quick; | |
497 | } v; | |
95554aad TT |
498 | |
499 | /* The CUs we import using DW_TAG_imported_unit. This is filled in | |
500 | while reading psymtabs, used to compute the psymtab dependencies, | |
501 | and then cleared. Then it is filled in again while reading full | |
502 | symbols, and only deleted when the objfile is destroyed. */ | |
503 | VEC (dwarf2_per_cu_ptr) *imported_symtabs; | |
ae038cb0 DJ |
504 | }; |
505 | ||
348e048f DE |
506 | /* Entry in the signatured_types hash table. */ |
507 | ||
508 | struct signatured_type | |
509 | { | |
3019eac3 | 510 | /* The type's signature. */ |
348e048f DE |
511 | ULONGEST signature; |
512 | ||
3019eac3 DE |
513 | /* Offset in the TU of the type's DIE, as read from the TU header. |
514 | If the definition lives in a DWO file, this value is unusable. */ | |
515 | cu_offset type_offset_in_tu; | |
516 | ||
517 | /* Offset in the section of the type's DIE. | |
518 | If the definition lives in a DWO file, this is the offset in the | |
519 | .debug_types.dwo section. | |
520 | The value is zero until the actual value is known. | |
521 | Zero is otherwise not a valid section offset. */ | |
522 | sect_offset type_offset_in_section; | |
348e048f DE |
523 | |
524 | /* The CU(/TU) of this type. */ | |
525 | struct dwarf2_per_cu_data per_cu; | |
526 | }; | |
527 | ||
3019eac3 DE |
528 | /* These sections are what may appear in a "dwo" file. */ |
529 | ||
530 | struct dwo_sections | |
531 | { | |
532 | struct dwarf2_section_info abbrev; | |
533 | struct dwarf2_section_info info; | |
534 | struct dwarf2_section_info line; | |
535 | struct dwarf2_section_info loc; | |
536 | struct dwarf2_section_info str; | |
537 | struct dwarf2_section_info str_offsets; | |
538 | VEC (dwarf2_section_info_def) *types; | |
539 | }; | |
540 | ||
541 | /* Common bits of DWO CUs/TUs. */ | |
542 | ||
543 | struct dwo_unit | |
544 | { | |
545 | /* Backlink to the containing struct dwo_file. */ | |
546 | struct dwo_file *dwo_file; | |
547 | ||
548 | /* The "id" that distinguishes this CU/TU. | |
549 | .debug_info calls this "dwo_id", .debug_types calls this "signature". | |
550 | Since signatures came first, we stick with it for consistency. */ | |
551 | ULONGEST signature; | |
552 | ||
553 | /* The section this CU/TU lives in, in the DWO file. */ | |
554 | struct dwarf2_section_info *info_or_types_section; | |
555 | ||
556 | /* Same as dwarf2_per_cu_data:{offset,length} but for the DWO section. */ | |
557 | sect_offset offset; | |
558 | unsigned int length; | |
559 | ||
560 | /* For types, offset in the type's DIE of the type defined by this TU. */ | |
561 | cu_offset type_offset_in_tu; | |
562 | }; | |
563 | ||
564 | /* Data for one DWO file. */ | |
565 | ||
566 | struct dwo_file | |
567 | { | |
568 | /* The DW_AT_GNU_dwo_name attribute. | |
569 | We don't manage space for this, it's an attribute. */ | |
570 | const char *dwo_name; | |
571 | ||
572 | /* The bfd, when the file is open. Otherwise this is NULL. */ | |
573 | bfd *dwo_bfd; | |
574 | ||
575 | /* Section info for this file. */ | |
576 | struct dwo_sections sections; | |
577 | ||
578 | /* Table of CUs in the file. | |
579 | Each element is a struct dwo_unit. */ | |
580 | htab_t cus; | |
581 | ||
582 | /* Table of TUs in the file. | |
583 | Each element is a struct dwo_unit. */ | |
584 | htab_t tus; | |
585 | }; | |
586 | ||
0963b4bd MS |
587 | /* Struct used to pass misc. parameters to read_die_and_children, et |
588 | al. which are used for both .debug_info and .debug_types dies. | |
589 | All parameters here are unchanging for the life of the call. This | |
dee91e82 | 590 | struct exists to abstract away the constant parameters of die reading. */ |
93311388 DE |
591 | |
592 | struct die_reader_specs | |
593 | { | |
dee91e82 | 594 | /* die_section->asection->owner. */ |
93311388 DE |
595 | bfd* abfd; |
596 | ||
597 | /* The CU of the DIE we are parsing. */ | |
598 | struct dwarf2_cu *cu; | |
599 | ||
3019eac3 DE |
600 | /* Non-NULL if reading a DWO file. */ |
601 | struct dwo_file *dwo_file; | |
602 | ||
dee91e82 | 603 | /* The section the die comes from. |
3019eac3 | 604 | This is either .debug_info or .debug_types, or the .dwo variants. */ |
dee91e82 DE |
605 | struct dwarf2_section_info *die_section; |
606 | ||
607 | /* die_section->buffer. */ | |
608 | gdb_byte *buffer; | |
93311388 DE |
609 | }; |
610 | ||
fd820528 | 611 | /* Type of function passed to init_cutu_and_read_dies, et.al. */ |
dee91e82 DE |
612 | typedef void (die_reader_func_ftype) (const struct die_reader_specs *reader, |
613 | gdb_byte *info_ptr, | |
614 | struct die_info *comp_unit_die, | |
615 | int has_children, | |
616 | void *data); | |
617 | ||
debd256d JB |
618 | /* The line number information for a compilation unit (found in the |
619 | .debug_line section) begins with a "statement program header", | |
620 | which contains the following information. */ | |
621 | struct line_header | |
622 | { | |
623 | unsigned int total_length; | |
624 | unsigned short version; | |
625 | unsigned int header_length; | |
626 | unsigned char minimum_instruction_length; | |
2dc7f7b3 | 627 | unsigned char maximum_ops_per_instruction; |
debd256d JB |
628 | unsigned char default_is_stmt; |
629 | int line_base; | |
630 | unsigned char line_range; | |
631 | unsigned char opcode_base; | |
632 | ||
633 | /* standard_opcode_lengths[i] is the number of operands for the | |
634 | standard opcode whose value is i. This means that | |
635 | standard_opcode_lengths[0] is unused, and the last meaningful | |
636 | element is standard_opcode_lengths[opcode_base - 1]. */ | |
637 | unsigned char *standard_opcode_lengths; | |
638 | ||
639 | /* The include_directories table. NOTE! These strings are not | |
640 | allocated with xmalloc; instead, they are pointers into | |
641 | debug_line_buffer. If you try to free them, `free' will get | |
642 | indigestion. */ | |
643 | unsigned int num_include_dirs, include_dirs_size; | |
644 | char **include_dirs; | |
645 | ||
646 | /* The file_names table. NOTE! These strings are not allocated | |
647 | with xmalloc; instead, they are pointers into debug_line_buffer. | |
648 | Don't try to free them directly. */ | |
649 | unsigned int num_file_names, file_names_size; | |
650 | struct file_entry | |
c906108c | 651 | { |
debd256d JB |
652 | char *name; |
653 | unsigned int dir_index; | |
654 | unsigned int mod_time; | |
655 | unsigned int length; | |
aaa75496 | 656 | int included_p; /* Non-zero if referenced by the Line Number Program. */ |
cb1df416 | 657 | struct symtab *symtab; /* The associated symbol table, if any. */ |
debd256d JB |
658 | } *file_names; |
659 | ||
660 | /* The start and end of the statement program following this | |
6502dd73 | 661 | header. These point into dwarf2_per_objfile->line_buffer. */ |
fe1b8b76 | 662 | gdb_byte *statement_program_start, *statement_program_end; |
debd256d | 663 | }; |
c906108c SS |
664 | |
665 | /* When we construct a partial symbol table entry we only | |
0963b4bd | 666 | need this much information. */ |
c906108c SS |
667 | struct partial_die_info |
668 | { | |
72bf9492 | 669 | /* Offset of this DIE. */ |
b64f50a1 | 670 | sect_offset offset; |
72bf9492 DJ |
671 | |
672 | /* DWARF-2 tag for this DIE. */ | |
673 | ENUM_BITFIELD(dwarf_tag) tag : 16; | |
674 | ||
72bf9492 DJ |
675 | /* Assorted flags describing the data found in this DIE. */ |
676 | unsigned int has_children : 1; | |
677 | unsigned int is_external : 1; | |
678 | unsigned int is_declaration : 1; | |
679 | unsigned int has_type : 1; | |
680 | unsigned int has_specification : 1; | |
681 | unsigned int has_pc_info : 1; | |
481860b3 | 682 | unsigned int may_be_inlined : 1; |
72bf9492 DJ |
683 | |
684 | /* Flag set if the SCOPE field of this structure has been | |
685 | computed. */ | |
686 | unsigned int scope_set : 1; | |
687 | ||
fa4028e9 JB |
688 | /* Flag set if the DIE has a byte_size attribute. */ |
689 | unsigned int has_byte_size : 1; | |
690 | ||
98bfdba5 PA |
691 | /* Flag set if any of the DIE's children are template arguments. */ |
692 | unsigned int has_template_arguments : 1; | |
693 | ||
abc72ce4 DE |
694 | /* Flag set if fixup_partial_die has been called on this die. */ |
695 | unsigned int fixup_called : 1; | |
696 | ||
72bf9492 | 697 | /* The name of this DIE. Normally the value of DW_AT_name, but |
94af9270 | 698 | sometimes a default name for unnamed DIEs. */ |
c906108c | 699 | char *name; |
72bf9492 | 700 | |
abc72ce4 DE |
701 | /* The linkage name, if present. */ |
702 | const char *linkage_name; | |
703 | ||
72bf9492 DJ |
704 | /* The scope to prepend to our children. This is generally |
705 | allocated on the comp_unit_obstack, so will disappear | |
706 | when this compilation unit leaves the cache. */ | |
707 | char *scope; | |
708 | ||
95554aad TT |
709 | /* Some data associated with the partial DIE. The tag determines |
710 | which field is live. */ | |
711 | union | |
712 | { | |
713 | /* The location description associated with this DIE, if any. */ | |
714 | struct dwarf_block *locdesc; | |
715 | /* The offset of an import, for DW_TAG_imported_unit. */ | |
716 | sect_offset offset; | |
717 | } d; | |
72bf9492 DJ |
718 | |
719 | /* If HAS_PC_INFO, the PC range associated with this DIE. */ | |
c906108c SS |
720 | CORE_ADDR lowpc; |
721 | CORE_ADDR highpc; | |
72bf9492 | 722 | |
93311388 | 723 | /* Pointer into the info_buffer (or types_buffer) pointing at the target of |
72bf9492 | 724 | DW_AT_sibling, if any. */ |
abc72ce4 DE |
725 | /* NOTE: This member isn't strictly necessary, read_partial_die could |
726 | return DW_AT_sibling values to its caller load_partial_dies. */ | |
fe1b8b76 | 727 | gdb_byte *sibling; |
72bf9492 DJ |
728 | |
729 | /* If HAS_SPECIFICATION, the offset of the DIE referred to by | |
730 | DW_AT_specification (or DW_AT_abstract_origin or | |
731 | DW_AT_extension). */ | |
b64f50a1 | 732 | sect_offset spec_offset; |
72bf9492 DJ |
733 | |
734 | /* Pointers to this DIE's parent, first child, and next sibling, | |
735 | if any. */ | |
736 | struct partial_die_info *die_parent, *die_child, *die_sibling; | |
c906108c SS |
737 | }; |
738 | ||
0963b4bd | 739 | /* This data structure holds the information of an abbrev. */ |
c906108c SS |
740 | struct abbrev_info |
741 | { | |
742 | unsigned int number; /* number identifying abbrev */ | |
743 | enum dwarf_tag tag; /* dwarf tag */ | |
f3dd6933 DJ |
744 | unsigned short has_children; /* boolean */ |
745 | unsigned short num_attrs; /* number of attributes */ | |
c906108c SS |
746 | struct attr_abbrev *attrs; /* an array of attribute descriptions */ |
747 | struct abbrev_info *next; /* next in chain */ | |
748 | }; | |
749 | ||
750 | struct attr_abbrev | |
751 | { | |
9d25dd43 DE |
752 | ENUM_BITFIELD(dwarf_attribute) name : 16; |
753 | ENUM_BITFIELD(dwarf_form) form : 16; | |
c906108c SS |
754 | }; |
755 | ||
0963b4bd | 756 | /* Attributes have a name and a value. */ |
b60c80d6 DJ |
757 | struct attribute |
758 | { | |
9d25dd43 | 759 | ENUM_BITFIELD(dwarf_attribute) name : 16; |
8285870a JK |
760 | ENUM_BITFIELD(dwarf_form) form : 15; |
761 | ||
762 | /* Has DW_STRING already been updated by dwarf2_canonicalize_name? This | |
763 | field should be in u.str (existing only for DW_STRING) but it is kept | |
764 | here for better struct attribute alignment. */ | |
765 | unsigned int string_is_canonical : 1; | |
766 | ||
b60c80d6 DJ |
767 | union |
768 | { | |
769 | char *str; | |
770 | struct dwarf_block *blk; | |
43bbcdc2 PH |
771 | ULONGEST unsnd; |
772 | LONGEST snd; | |
b60c80d6 | 773 | CORE_ADDR addr; |
348e048f | 774 | struct signatured_type *signatured_type; |
b60c80d6 DJ |
775 | } |
776 | u; | |
777 | }; | |
778 | ||
0963b4bd | 779 | /* This data structure holds a complete die structure. */ |
c906108c SS |
780 | struct die_info |
781 | { | |
76815b17 DE |
782 | /* DWARF-2 tag for this DIE. */ |
783 | ENUM_BITFIELD(dwarf_tag) tag : 16; | |
784 | ||
785 | /* Number of attributes */ | |
98bfdba5 PA |
786 | unsigned char num_attrs; |
787 | ||
788 | /* True if we're presently building the full type name for the | |
789 | type derived from this DIE. */ | |
790 | unsigned char building_fullname : 1; | |
76815b17 DE |
791 | |
792 | /* Abbrev number */ | |
793 | unsigned int abbrev; | |
794 | ||
93311388 | 795 | /* Offset in .debug_info or .debug_types section. */ |
b64f50a1 | 796 | sect_offset offset; |
78ba4af6 JB |
797 | |
798 | /* The dies in a compilation unit form an n-ary tree. PARENT | |
799 | points to this die's parent; CHILD points to the first child of | |
800 | this node; and all the children of a given node are chained | |
4950bc1c | 801 | together via their SIBLING fields. */ |
639d11d3 DC |
802 | struct die_info *child; /* Its first child, if any. */ |
803 | struct die_info *sibling; /* Its next sibling, if any. */ | |
804 | struct die_info *parent; /* Its parent, if any. */ | |
c906108c | 805 | |
b60c80d6 DJ |
806 | /* An array of attributes, with NUM_ATTRS elements. There may be |
807 | zero, but it's not common and zero-sized arrays are not | |
808 | sufficiently portable C. */ | |
809 | struct attribute attrs[1]; | |
c906108c SS |
810 | }; |
811 | ||
0963b4bd | 812 | /* Get at parts of an attribute structure. */ |
c906108c SS |
813 | |
814 | #define DW_STRING(attr) ((attr)->u.str) | |
8285870a | 815 | #define DW_STRING_IS_CANONICAL(attr) ((attr)->string_is_canonical) |
c906108c SS |
816 | #define DW_UNSND(attr) ((attr)->u.unsnd) |
817 | #define DW_BLOCK(attr) ((attr)->u.blk) | |
818 | #define DW_SND(attr) ((attr)->u.snd) | |
819 | #define DW_ADDR(attr) ((attr)->u.addr) | |
348e048f | 820 | #define DW_SIGNATURED_TYPE(attr) ((attr)->u.signatured_type) |
c906108c | 821 | |
0963b4bd | 822 | /* Blocks are a bunch of untyped bytes. */ |
c906108c SS |
823 | struct dwarf_block |
824 | { | |
825 | unsigned int size; | |
1d6edc3c JK |
826 | |
827 | /* Valid only if SIZE is not zero. */ | |
fe1b8b76 | 828 | gdb_byte *data; |
c906108c SS |
829 | }; |
830 | ||
c906108c SS |
831 | #ifndef ATTR_ALLOC_CHUNK |
832 | #define ATTR_ALLOC_CHUNK 4 | |
833 | #endif | |
834 | ||
c906108c SS |
835 | /* Allocate fields for structs, unions and enums in this size. */ |
836 | #ifndef DW_FIELD_ALLOC_CHUNK | |
837 | #define DW_FIELD_ALLOC_CHUNK 4 | |
838 | #endif | |
839 | ||
c906108c SS |
840 | /* FIXME: We might want to set this from BFD via bfd_arch_bits_per_byte, |
841 | but this would require a corresponding change in unpack_field_as_long | |
842 | and friends. */ | |
843 | static int bits_per_byte = 8; | |
844 | ||
845 | /* The routines that read and process dies for a C struct or C++ class | |
846 | pass lists of data member fields and lists of member function fields | |
847 | in an instance of a field_info structure, as defined below. */ | |
848 | struct field_info | |
c5aa993b | 849 | { |
0963b4bd | 850 | /* List of data member and baseclasses fields. */ |
c5aa993b JM |
851 | struct nextfield |
852 | { | |
853 | struct nextfield *next; | |
854 | int accessibility; | |
855 | int virtuality; | |
856 | struct field field; | |
857 | } | |
7d0ccb61 | 858 | *fields, *baseclasses; |
c906108c | 859 | |
7d0ccb61 | 860 | /* Number of fields (including baseclasses). */ |
c5aa993b | 861 | int nfields; |
c906108c | 862 | |
c5aa993b JM |
863 | /* Number of baseclasses. */ |
864 | int nbaseclasses; | |
c906108c | 865 | |
c5aa993b JM |
866 | /* Set if the accesibility of one of the fields is not public. */ |
867 | int non_public_fields; | |
c906108c | 868 | |
c5aa993b JM |
869 | /* Member function fields array, entries are allocated in the order they |
870 | are encountered in the object file. */ | |
871 | struct nextfnfield | |
872 | { | |
873 | struct nextfnfield *next; | |
874 | struct fn_field fnfield; | |
875 | } | |
876 | *fnfields; | |
c906108c | 877 | |
c5aa993b JM |
878 | /* Member function fieldlist array, contains name of possibly overloaded |
879 | member function, number of overloaded member functions and a pointer | |
880 | to the head of the member function field chain. */ | |
881 | struct fnfieldlist | |
882 | { | |
883 | char *name; | |
884 | int length; | |
885 | struct nextfnfield *head; | |
886 | } | |
887 | *fnfieldlists; | |
c906108c | 888 | |
c5aa993b JM |
889 | /* Number of entries in the fnfieldlists array. */ |
890 | int nfnfields; | |
98751a41 JK |
891 | |
892 | /* typedefs defined inside this class. TYPEDEF_FIELD_LIST contains head of | |
893 | a NULL terminated list of TYPEDEF_FIELD_LIST_COUNT elements. */ | |
894 | struct typedef_field_list | |
895 | { | |
896 | struct typedef_field field; | |
897 | struct typedef_field_list *next; | |
898 | } | |
899 | *typedef_field_list; | |
900 | unsigned typedef_field_list_count; | |
c5aa993b | 901 | }; |
c906108c | 902 | |
10b3939b DJ |
903 | /* One item on the queue of compilation units to read in full symbols |
904 | for. */ | |
905 | struct dwarf2_queue_item | |
906 | { | |
907 | struct dwarf2_per_cu_data *per_cu; | |
95554aad | 908 | enum language pretend_language; |
10b3939b DJ |
909 | struct dwarf2_queue_item *next; |
910 | }; | |
911 | ||
912 | /* The current queue. */ | |
913 | static struct dwarf2_queue_item *dwarf2_queue, *dwarf2_queue_tail; | |
914 | ||
ae038cb0 DJ |
915 | /* Loaded secondary compilation units are kept in memory until they |
916 | have not been referenced for the processing of this many | |
917 | compilation units. Set this to zero to disable caching. Cache | |
918 | sizes of up to at least twenty will improve startup time for | |
919 | typical inter-CU-reference binaries, at an obvious memory cost. */ | |
920 | static int dwarf2_max_cache_age = 5; | |
920d2a44 AC |
921 | static void |
922 | show_dwarf2_max_cache_age (struct ui_file *file, int from_tty, | |
923 | struct cmd_list_element *c, const char *value) | |
924 | { | |
3e43a32a MS |
925 | fprintf_filtered (file, _("The upper bound on the age of cached " |
926 | "dwarf2 compilation units is %s.\n"), | |
920d2a44 AC |
927 | value); |
928 | } | |
929 | ||
ae038cb0 | 930 | |
0963b4bd | 931 | /* Various complaints about symbol reading that don't abort the process. */ |
c906108c | 932 | |
4d3c2250 KB |
933 | static void |
934 | dwarf2_statement_list_fits_in_line_number_section_complaint (void) | |
2e276125 | 935 | { |
4d3c2250 | 936 | complaint (&symfile_complaints, |
e2e0b3e5 | 937 | _("statement list doesn't fit in .debug_line section")); |
4d3c2250 KB |
938 | } |
939 | ||
25e43795 DJ |
940 | static void |
941 | dwarf2_debug_line_missing_file_complaint (void) | |
942 | { | |
943 | complaint (&symfile_complaints, | |
944 | _(".debug_line section has line data without a file")); | |
945 | } | |
946 | ||
59205f5a JB |
947 | static void |
948 | dwarf2_debug_line_missing_end_sequence_complaint (void) | |
949 | { | |
950 | complaint (&symfile_complaints, | |
3e43a32a MS |
951 | _(".debug_line section has line " |
952 | "program sequence without an end")); | |
59205f5a JB |
953 | } |
954 | ||
4d3c2250 KB |
955 | static void |
956 | dwarf2_complex_location_expr_complaint (void) | |
2e276125 | 957 | { |
e2e0b3e5 | 958 | complaint (&symfile_complaints, _("location expression too complex")); |
4d3c2250 KB |
959 | } |
960 | ||
4d3c2250 KB |
961 | static void |
962 | dwarf2_const_value_length_mismatch_complaint (const char *arg1, int arg2, | |
963 | int arg3) | |
2e276125 | 964 | { |
4d3c2250 | 965 | complaint (&symfile_complaints, |
3e43a32a MS |
966 | _("const value length mismatch for '%s', got %d, expected %d"), |
967 | arg1, arg2, arg3); | |
4d3c2250 KB |
968 | } |
969 | ||
970 | static void | |
cf2c3c16 | 971 | dwarf2_macros_too_long_complaint (struct dwarf2_section_info *section) |
2e276125 | 972 | { |
4d3c2250 | 973 | complaint (&symfile_complaints, |
cf2c3c16 TT |
974 | _("macro info runs off end of `%s' section"), |
975 | section->asection->name); | |
4d3c2250 KB |
976 | } |
977 | ||
978 | static void | |
979 | dwarf2_macro_malformed_definition_complaint (const char *arg1) | |
8e19ed76 | 980 | { |
4d3c2250 | 981 | complaint (&symfile_complaints, |
3e43a32a MS |
982 | _("macro debug info contains a " |
983 | "malformed macro definition:\n`%s'"), | |
4d3c2250 KB |
984 | arg1); |
985 | } | |
986 | ||
987 | static void | |
988 | dwarf2_invalid_attrib_class_complaint (const char *arg1, const char *arg2) | |
8b2dbe47 | 989 | { |
4d3c2250 | 990 | complaint (&symfile_complaints, |
3e43a32a MS |
991 | _("invalid attribute class or form for '%s' in '%s'"), |
992 | arg1, arg2); | |
4d3c2250 | 993 | } |
c906108c | 994 | |
c906108c SS |
995 | /* local function prototypes */ |
996 | ||
4efb68b1 | 997 | static void dwarf2_locate_sections (bfd *, asection *, void *); |
c906108c | 998 | |
aaa75496 JB |
999 | static void dwarf2_create_include_psymtab (char *, struct partial_symtab *, |
1000 | struct objfile *); | |
1001 | ||
918dd910 JK |
1002 | static void dwarf2_find_base_address (struct die_info *die, |
1003 | struct dwarf2_cu *cu); | |
1004 | ||
c67a9c90 | 1005 | static void dwarf2_build_psymtabs_hard (struct objfile *); |
c906108c | 1006 | |
72bf9492 DJ |
1007 | static void scan_partial_symbols (struct partial_die_info *, |
1008 | CORE_ADDR *, CORE_ADDR *, | |
5734ee8b | 1009 | int, struct dwarf2_cu *); |
c906108c | 1010 | |
72bf9492 DJ |
1011 | static void add_partial_symbol (struct partial_die_info *, |
1012 | struct dwarf2_cu *); | |
63d06c5c | 1013 | |
72bf9492 DJ |
1014 | static void add_partial_namespace (struct partial_die_info *pdi, |
1015 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 1016 | int need_pc, struct dwarf2_cu *cu); |
63d06c5c | 1017 | |
5d7cb8df JK |
1018 | static void add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, |
1019 | CORE_ADDR *highpc, int need_pc, | |
1020 | struct dwarf2_cu *cu); | |
1021 | ||
72bf9492 DJ |
1022 | static void add_partial_enumeration (struct partial_die_info *enum_pdi, |
1023 | struct dwarf2_cu *cu); | |
91c24f0a | 1024 | |
bc30ff58 JB |
1025 | static void add_partial_subprogram (struct partial_die_info *pdi, |
1026 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 1027 | int need_pc, struct dwarf2_cu *cu); |
bc30ff58 | 1028 | |
a14ed312 | 1029 | static void dwarf2_psymtab_to_symtab (struct partial_symtab *); |
c906108c | 1030 | |
a14ed312 | 1031 | static void psymtab_to_symtab_1 (struct partial_symtab *); |
c906108c | 1032 | |
dee91e82 DE |
1033 | static void dwarf2_read_abbrevs (struct dwarf2_cu *, |
1034 | struct dwarf2_section_info *); | |
c906108c | 1035 | |
f3dd6933 | 1036 | static void dwarf2_free_abbrev_table (void *); |
c906108c | 1037 | |
6caca83c CC |
1038 | static unsigned int peek_abbrev_code (bfd *, gdb_byte *); |
1039 | ||
fe1b8b76 | 1040 | static struct abbrev_info *peek_die_abbrev (gdb_byte *, unsigned int *, |
891d2f0b | 1041 | struct dwarf2_cu *); |
72bf9492 | 1042 | |
57349743 | 1043 | static struct abbrev_info *dwarf2_lookup_abbrev (unsigned int, |
e7c27a73 | 1044 | struct dwarf2_cu *); |
c906108c | 1045 | |
dee91e82 DE |
1046 | static struct partial_die_info *load_partial_dies |
1047 | (const struct die_reader_specs *, gdb_byte *, int); | |
72bf9492 | 1048 | |
dee91e82 DE |
1049 | static gdb_byte *read_partial_die (const struct die_reader_specs *, |
1050 | struct partial_die_info *, | |
1051 | struct abbrev_info *, | |
1052 | unsigned int, | |
1053 | gdb_byte *); | |
c906108c | 1054 | |
b64f50a1 | 1055 | static struct partial_die_info *find_partial_die (sect_offset, |
10b3939b | 1056 | struct dwarf2_cu *); |
72bf9492 DJ |
1057 | |
1058 | static void fixup_partial_die (struct partial_die_info *, | |
1059 | struct dwarf2_cu *); | |
1060 | ||
dee91e82 DE |
1061 | static gdb_byte *read_attribute (const struct die_reader_specs *, |
1062 | struct attribute *, struct attr_abbrev *, | |
1063 | gdb_byte *); | |
a8329558 | 1064 | |
fe1b8b76 | 1065 | static unsigned int read_1_byte (bfd *, gdb_byte *); |
c906108c | 1066 | |
fe1b8b76 | 1067 | static int read_1_signed_byte (bfd *, gdb_byte *); |
c906108c | 1068 | |
fe1b8b76 | 1069 | static unsigned int read_2_bytes (bfd *, gdb_byte *); |
c906108c | 1070 | |
fe1b8b76 | 1071 | static unsigned int read_4_bytes (bfd *, gdb_byte *); |
c906108c | 1072 | |
93311388 | 1073 | static ULONGEST read_8_bytes (bfd *, gdb_byte *); |
c906108c | 1074 | |
fe1b8b76 | 1075 | static CORE_ADDR read_address (bfd *, gdb_byte *ptr, struct dwarf2_cu *, |
891d2f0b | 1076 | unsigned int *); |
c906108c | 1077 | |
c764a876 DE |
1078 | static LONGEST read_initial_length (bfd *, gdb_byte *, unsigned int *); |
1079 | ||
1080 | static LONGEST read_checked_initial_length_and_offset | |
1081 | (bfd *, gdb_byte *, const struct comp_unit_head *, | |
1082 | unsigned int *, unsigned int *); | |
613e1657 | 1083 | |
fe1b8b76 | 1084 | static LONGEST read_offset (bfd *, gdb_byte *, const struct comp_unit_head *, |
c764a876 DE |
1085 | unsigned int *); |
1086 | ||
1087 | static LONGEST read_offset_1 (bfd *, gdb_byte *, unsigned int); | |
613e1657 | 1088 | |
fe1b8b76 | 1089 | static gdb_byte *read_n_bytes (bfd *, gdb_byte *, unsigned int); |
c906108c | 1090 | |
9b1c24c8 | 1091 | static char *read_direct_string (bfd *, gdb_byte *, unsigned int *); |
c906108c | 1092 | |
fe1b8b76 JB |
1093 | static char *read_indirect_string (bfd *, gdb_byte *, |
1094 | const struct comp_unit_head *, | |
1095 | unsigned int *); | |
4bdf3d34 | 1096 | |
12df843f | 1097 | static ULONGEST read_unsigned_leb128 (bfd *, gdb_byte *, unsigned int *); |
c906108c | 1098 | |
12df843f | 1099 | static LONGEST read_signed_leb128 (bfd *, gdb_byte *, unsigned int *); |
c906108c | 1100 | |
3019eac3 DE |
1101 | static CORE_ADDR read_addr_index_from_leb128 (struct dwarf2_cu *, gdb_byte *, |
1102 | unsigned int *); | |
1103 | ||
1104 | static char *read_str_index (const struct die_reader_specs *reader, | |
1105 | struct dwarf2_cu *cu, ULONGEST str_index); | |
1106 | ||
fe1b8b76 | 1107 | static gdb_byte *skip_leb128 (bfd *, gdb_byte *); |
4bb7a0a7 | 1108 | |
e142c38c | 1109 | static void set_cu_language (unsigned int, struct dwarf2_cu *); |
c906108c | 1110 | |
e142c38c DJ |
1111 | static struct attribute *dwarf2_attr (struct die_info *, unsigned int, |
1112 | struct dwarf2_cu *); | |
c906108c | 1113 | |
348e048f DE |
1114 | static struct attribute *dwarf2_attr_no_follow (struct die_info *, |
1115 | unsigned int, | |
1116 | struct dwarf2_cu *); | |
1117 | ||
05cf31d1 JB |
1118 | static int dwarf2_flag_true_p (struct die_info *die, unsigned name, |
1119 | struct dwarf2_cu *cu); | |
1120 | ||
e142c38c | 1121 | static int die_is_declaration (struct die_info *, struct dwarf2_cu *cu); |
3ca72b44 | 1122 | |
e142c38c | 1123 | static struct die_info *die_specification (struct die_info *die, |
f2f0e013 | 1124 | struct dwarf2_cu **); |
63d06c5c | 1125 | |
debd256d JB |
1126 | static void free_line_header (struct line_header *lh); |
1127 | ||
aaa75496 JB |
1128 | static void add_file_name (struct line_header *, char *, unsigned int, |
1129 | unsigned int, unsigned int); | |
1130 | ||
3019eac3 DE |
1131 | static struct line_header *dwarf_decode_line_header (unsigned int offset, |
1132 | struct dwarf2_cu *cu); | |
debd256d | 1133 | |
f3f5162e DE |
1134 | static void dwarf_decode_lines (struct line_header *, const char *, |
1135 | struct dwarf2_cu *, struct partial_symtab *, | |
1136 | int); | |
c906108c | 1137 | |
72b9f47f | 1138 | static void dwarf2_start_subfile (char *, const char *, const char *); |
c906108c | 1139 | |
a14ed312 | 1140 | static struct symbol *new_symbol (struct die_info *, struct type *, |
e7c27a73 | 1141 | struct dwarf2_cu *); |
c906108c | 1142 | |
34eaf542 TT |
1143 | static struct symbol *new_symbol_full (struct die_info *, struct type *, |
1144 | struct dwarf2_cu *, struct symbol *); | |
1145 | ||
a14ed312 | 1146 | static void dwarf2_const_value (struct attribute *, struct symbol *, |
e7c27a73 | 1147 | struct dwarf2_cu *); |
c906108c | 1148 | |
98bfdba5 PA |
1149 | static void dwarf2_const_value_attr (struct attribute *attr, |
1150 | struct type *type, | |
1151 | const char *name, | |
1152 | struct obstack *obstack, | |
12df843f | 1153 | struct dwarf2_cu *cu, LONGEST *value, |
98bfdba5 PA |
1154 | gdb_byte **bytes, |
1155 | struct dwarf2_locexpr_baton **baton); | |
2df3850c | 1156 | |
e7c27a73 | 1157 | static struct type *die_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 1158 | |
b4ba55a1 JB |
1159 | static int need_gnat_info (struct dwarf2_cu *); |
1160 | ||
3e43a32a MS |
1161 | static struct type *die_descriptive_type (struct die_info *, |
1162 | struct dwarf2_cu *); | |
b4ba55a1 JB |
1163 | |
1164 | static void set_descriptive_type (struct type *, struct die_info *, | |
1165 | struct dwarf2_cu *); | |
1166 | ||
e7c27a73 DJ |
1167 | static struct type *die_containing_type (struct die_info *, |
1168 | struct dwarf2_cu *); | |
c906108c | 1169 | |
673bfd45 DE |
1170 | static struct type *lookup_die_type (struct die_info *, struct attribute *, |
1171 | struct dwarf2_cu *); | |
c906108c | 1172 | |
f792889a | 1173 | static struct type *read_type_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1174 | |
673bfd45 DE |
1175 | static struct type *read_type_die_1 (struct die_info *, struct dwarf2_cu *); |
1176 | ||
0d5cff50 | 1177 | static const char *determine_prefix (struct die_info *die, struct dwarf2_cu *); |
63d06c5c | 1178 | |
6e70227d | 1179 | static char *typename_concat (struct obstack *obs, const char *prefix, |
f55ee35c JK |
1180 | const char *suffix, int physname, |
1181 | struct dwarf2_cu *cu); | |
63d06c5c | 1182 | |
e7c27a73 | 1183 | static void read_file_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1184 | |
348e048f DE |
1185 | static void read_type_unit_scope (struct die_info *, struct dwarf2_cu *); |
1186 | ||
e7c27a73 | 1187 | static void read_func_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1188 | |
e7c27a73 | 1189 | static void read_lexical_block_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1190 | |
96408a79 SA |
1191 | static void read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu); |
1192 | ||
ff013f42 JK |
1193 | static int dwarf2_ranges_read (unsigned, CORE_ADDR *, CORE_ADDR *, |
1194 | struct dwarf2_cu *, struct partial_symtab *); | |
1195 | ||
a14ed312 | 1196 | static int dwarf2_get_pc_bounds (struct die_info *, |
d85a05f0 DJ |
1197 | CORE_ADDR *, CORE_ADDR *, struct dwarf2_cu *, |
1198 | struct partial_symtab *); | |
c906108c | 1199 | |
fae299cd DC |
1200 | static void get_scope_pc_bounds (struct die_info *, |
1201 | CORE_ADDR *, CORE_ADDR *, | |
1202 | struct dwarf2_cu *); | |
1203 | ||
801e3a5b JB |
1204 | static void dwarf2_record_block_ranges (struct die_info *, struct block *, |
1205 | CORE_ADDR, struct dwarf2_cu *); | |
1206 | ||
a14ed312 | 1207 | static void dwarf2_add_field (struct field_info *, struct die_info *, |
e7c27a73 | 1208 | struct dwarf2_cu *); |
c906108c | 1209 | |
a14ed312 | 1210 | static void dwarf2_attach_fields_to_type (struct field_info *, |
e7c27a73 | 1211 | struct type *, struct dwarf2_cu *); |
c906108c | 1212 | |
a14ed312 | 1213 | static void dwarf2_add_member_fn (struct field_info *, |
e26fb1d7 | 1214 | struct die_info *, struct type *, |
e7c27a73 | 1215 | struct dwarf2_cu *); |
c906108c | 1216 | |
a14ed312 | 1217 | static void dwarf2_attach_fn_fields_to_type (struct field_info *, |
3e43a32a MS |
1218 | struct type *, |
1219 | struct dwarf2_cu *); | |
c906108c | 1220 | |
134d01f1 | 1221 | static void process_structure_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1222 | |
e7c27a73 | 1223 | static void read_common_block (struct die_info *, struct dwarf2_cu *); |
c906108c | 1224 | |
e7c27a73 | 1225 | static void read_namespace (struct die_info *die, struct dwarf2_cu *); |
d9fa45fe | 1226 | |
5d7cb8df JK |
1227 | static void read_module (struct die_info *die, struct dwarf2_cu *cu); |
1228 | ||
27aa8d6a SW |
1229 | static void read_import_statement (struct die_info *die, struct dwarf2_cu *); |
1230 | ||
f55ee35c JK |
1231 | static struct type *read_module_type (struct die_info *die, |
1232 | struct dwarf2_cu *cu); | |
1233 | ||
38d518c9 | 1234 | static const char *namespace_name (struct die_info *die, |
e142c38c | 1235 | int *is_anonymous, struct dwarf2_cu *); |
38d518c9 | 1236 | |
134d01f1 | 1237 | static void process_enumeration_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1238 | |
e7c27a73 | 1239 | static CORE_ADDR decode_locdesc (struct dwarf_block *, struct dwarf2_cu *); |
c906108c | 1240 | |
6e70227d | 1241 | static enum dwarf_array_dim_ordering read_array_order (struct die_info *, |
7ca2d3a3 DL |
1242 | struct dwarf2_cu *); |
1243 | ||
dee91e82 | 1244 | static struct die_info *read_die_and_children (const struct die_reader_specs *, |
93311388 | 1245 | gdb_byte *info_ptr, |
fe1b8b76 | 1246 | gdb_byte **new_info_ptr, |
639d11d3 DC |
1247 | struct die_info *parent); |
1248 | ||
dee91e82 | 1249 | static struct die_info *read_die_and_siblings (const struct die_reader_specs *, |
93311388 | 1250 | gdb_byte *info_ptr, |
fe1b8b76 | 1251 | gdb_byte **new_info_ptr, |
639d11d3 DC |
1252 | struct die_info *parent); |
1253 | ||
3019eac3 DE |
1254 | static gdb_byte *read_full_die_1 (const struct die_reader_specs *, |
1255 | struct die_info **, gdb_byte *, int *, int); | |
1256 | ||
dee91e82 DE |
1257 | static gdb_byte *read_full_die (const struct die_reader_specs *, |
1258 | struct die_info **, gdb_byte *, int *); | |
93311388 | 1259 | |
e7c27a73 | 1260 | static void process_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1261 | |
71c25dea TT |
1262 | static char *dwarf2_canonicalize_name (char *, struct dwarf2_cu *, |
1263 | struct obstack *); | |
1264 | ||
e142c38c | 1265 | static char *dwarf2_name (struct die_info *die, struct dwarf2_cu *); |
9219021c | 1266 | |
98bfdba5 PA |
1267 | static const char *dwarf2_full_name (char *name, |
1268 | struct die_info *die, | |
1269 | struct dwarf2_cu *cu); | |
1270 | ||
e142c38c | 1271 | static struct die_info *dwarf2_extension (struct die_info *die, |
f2f0e013 | 1272 | struct dwarf2_cu **); |
9219021c | 1273 | |
f39c6ffd | 1274 | static const char *dwarf_tag_name (unsigned int); |
c906108c | 1275 | |
f39c6ffd | 1276 | static const char *dwarf_attr_name (unsigned int); |
c906108c | 1277 | |
f39c6ffd | 1278 | static const char *dwarf_form_name (unsigned int); |
c906108c | 1279 | |
a14ed312 | 1280 | static char *dwarf_bool_name (unsigned int); |
c906108c | 1281 | |
f39c6ffd | 1282 | static const char *dwarf_type_encoding_name (unsigned int); |
c906108c | 1283 | |
f9aca02d | 1284 | static struct die_info *sibling_die (struct die_info *); |
c906108c | 1285 | |
d97bc12b DE |
1286 | static void dump_die_shallow (struct ui_file *, int indent, struct die_info *); |
1287 | ||
1288 | static void dump_die_for_error (struct die_info *); | |
1289 | ||
1290 | static void dump_die_1 (struct ui_file *, int level, int max_level, | |
1291 | struct die_info *); | |
c906108c | 1292 | |
d97bc12b | 1293 | /*static*/ void dump_die (struct die_info *, int max_level); |
c906108c | 1294 | |
51545339 | 1295 | static void store_in_ref_table (struct die_info *, |
10b3939b | 1296 | struct dwarf2_cu *); |
c906108c | 1297 | |
93311388 DE |
1298 | static int is_ref_attr (struct attribute *); |
1299 | ||
b64f50a1 | 1300 | static sect_offset dwarf2_get_ref_die_offset (struct attribute *); |
c906108c | 1301 | |
43bbcdc2 | 1302 | static LONGEST dwarf2_get_attr_constant_value (struct attribute *, int); |
a02abb62 | 1303 | |
348e048f DE |
1304 | static struct die_info *follow_die_ref_or_sig (struct die_info *, |
1305 | struct attribute *, | |
1306 | struct dwarf2_cu **); | |
1307 | ||
10b3939b DJ |
1308 | static struct die_info *follow_die_ref (struct die_info *, |
1309 | struct attribute *, | |
f2f0e013 | 1310 | struct dwarf2_cu **); |
c906108c | 1311 | |
348e048f DE |
1312 | static struct die_info *follow_die_sig (struct die_info *, |
1313 | struct attribute *, | |
1314 | struct dwarf2_cu **); | |
1315 | ||
6c83ed52 TT |
1316 | static struct signatured_type *lookup_signatured_type_at_offset |
1317 | (struct objfile *objfile, | |
b64f50a1 | 1318 | struct dwarf2_section_info *section, sect_offset offset); |
6c83ed52 | 1319 | |
e5fe5e75 | 1320 | static void load_full_type_unit (struct dwarf2_per_cu_data *per_cu); |
348e048f | 1321 | |
52dc124a | 1322 | static void read_signatured_type (struct signatured_type *); |
348e048f | 1323 | |
c906108c SS |
1324 | /* memory allocation interface */ |
1325 | ||
7b5a2f43 | 1326 | static struct dwarf_block *dwarf_alloc_block (struct dwarf2_cu *); |
c906108c | 1327 | |
f3dd6933 | 1328 | static struct abbrev_info *dwarf_alloc_abbrev (struct dwarf2_cu *); |
c906108c | 1329 | |
b60c80d6 | 1330 | static struct die_info *dwarf_alloc_die (struct dwarf2_cu *, int); |
c906108c | 1331 | |
2e276125 | 1332 | static void dwarf_decode_macros (struct line_header *, unsigned int, |
cf2c3c16 TT |
1333 | char *, bfd *, struct dwarf2_cu *, |
1334 | struct dwarf2_section_info *, | |
fceca515 | 1335 | int, const char *); |
2e276125 | 1336 | |
8e19ed76 PS |
1337 | static int attr_form_is_block (struct attribute *); |
1338 | ||
3690dd37 JB |
1339 | static int attr_form_is_section_offset (struct attribute *); |
1340 | ||
1341 | static int attr_form_is_constant (struct attribute *); | |
1342 | ||
8cf6f0b1 TT |
1343 | static void fill_in_loclist_baton (struct dwarf2_cu *cu, |
1344 | struct dwarf2_loclist_baton *baton, | |
1345 | struct attribute *attr); | |
1346 | ||
93e7bd98 DJ |
1347 | static void dwarf2_symbol_mark_computed (struct attribute *attr, |
1348 | struct symbol *sym, | |
1349 | struct dwarf2_cu *cu); | |
4c2df51b | 1350 | |
dee91e82 DE |
1351 | static gdb_byte *skip_one_die (const struct die_reader_specs *reader, |
1352 | gdb_byte *info_ptr, | |
1353 | struct abbrev_info *abbrev); | |
4bb7a0a7 | 1354 | |
72bf9492 DJ |
1355 | static void free_stack_comp_unit (void *); |
1356 | ||
72bf9492 DJ |
1357 | static hashval_t partial_die_hash (const void *item); |
1358 | ||
1359 | static int partial_die_eq (const void *item_lhs, const void *item_rhs); | |
1360 | ||
ae038cb0 | 1361 | static struct dwarf2_per_cu_data *dwarf2_find_containing_comp_unit |
b64f50a1 | 1362 | (sect_offset offset, struct objfile *objfile); |
ae038cb0 | 1363 | |
9816fde3 | 1364 | static void init_one_comp_unit (struct dwarf2_cu *cu, |
23745b47 | 1365 | struct dwarf2_per_cu_data *per_cu); |
9816fde3 JK |
1366 | |
1367 | static void prepare_one_comp_unit (struct dwarf2_cu *cu, | |
95554aad TT |
1368 | struct die_info *comp_unit_die, |
1369 | enum language pretend_language); | |
93311388 | 1370 | |
68dc6402 | 1371 | static void free_heap_comp_unit (void *); |
ae038cb0 DJ |
1372 | |
1373 | static void free_cached_comp_units (void *); | |
1374 | ||
1375 | static void age_cached_comp_units (void); | |
1376 | ||
dee91e82 | 1377 | static void free_one_cached_comp_unit (struct dwarf2_per_cu_data *); |
ae038cb0 | 1378 | |
f792889a DJ |
1379 | static struct type *set_die_type (struct die_info *, struct type *, |
1380 | struct dwarf2_cu *); | |
1c379e20 | 1381 | |
ae038cb0 DJ |
1382 | static void create_all_comp_units (struct objfile *); |
1383 | ||
0e50663e | 1384 | static int create_all_type_units (struct objfile *); |
1fd400ff | 1385 | |
95554aad TT |
1386 | static void load_full_comp_unit (struct dwarf2_per_cu_data *, |
1387 | enum language); | |
10b3939b | 1388 | |
95554aad TT |
1389 | static void process_full_comp_unit (struct dwarf2_per_cu_data *, |
1390 | enum language); | |
10b3939b DJ |
1391 | |
1392 | static void dwarf2_add_dependence (struct dwarf2_cu *, | |
1393 | struct dwarf2_per_cu_data *); | |
1394 | ||
ae038cb0 DJ |
1395 | static void dwarf2_mark (struct dwarf2_cu *); |
1396 | ||
1397 | static void dwarf2_clear_marks (struct dwarf2_per_cu_data *); | |
1398 | ||
b64f50a1 | 1399 | static struct type *get_die_type_at_offset (sect_offset, |
673bfd45 DE |
1400 | struct dwarf2_per_cu_data *per_cu); |
1401 | ||
f792889a | 1402 | static struct type *get_die_type (struct die_info *die, struct dwarf2_cu *cu); |
72019c9c | 1403 | |
9291a0cd TT |
1404 | static void dwarf2_release_queue (void *dummy); |
1405 | ||
95554aad TT |
1406 | static void queue_comp_unit (struct dwarf2_per_cu_data *per_cu, |
1407 | enum language pretend_language); | |
1408 | ||
1409 | static int maybe_queue_comp_unit (struct dwarf2_cu *this_cu, | |
1410 | struct dwarf2_per_cu_data *per_cu, | |
1411 | enum language pretend_language); | |
9291a0cd | 1412 | |
a0f42c21 | 1413 | static void process_queue (void); |
9291a0cd TT |
1414 | |
1415 | static void find_file_and_directory (struct die_info *die, | |
1416 | struct dwarf2_cu *cu, | |
1417 | char **name, char **comp_dir); | |
1418 | ||
1419 | static char *file_full_name (int file, struct line_header *lh, | |
1420 | const char *comp_dir); | |
1421 | ||
9ff913ba DE |
1422 | static gdb_byte *read_and_check_comp_unit_head |
1423 | (struct comp_unit_head *header, | |
1424 | struct dwarf2_section_info *section, gdb_byte *info_ptr, | |
1425 | int is_debug_types_section); | |
9291a0cd | 1426 | |
fd820528 DE |
1427 | static void init_cutu_and_read_dies |
1428 | (struct dwarf2_per_cu_data *this_cu, int use_existing_cu, int keep, | |
3019eac3 DE |
1429 | die_reader_func_ftype *die_reader_func, void *data); |
1430 | ||
dee91e82 DE |
1431 | static void init_cutu_and_read_dies_simple |
1432 | (struct dwarf2_per_cu_data *this_cu, | |
1433 | die_reader_func_ftype *die_reader_func, void *data); | |
9291a0cd | 1434 | |
673bfd45 | 1435 | static htab_t allocate_signatured_type_table (struct objfile *objfile); |
1fd400ff | 1436 | |
95554aad | 1437 | static void process_psymtab_comp_unit (struct dwarf2_per_cu_data *, int); |
dee91e82 | 1438 | |
3019eac3 DE |
1439 | static htab_t allocate_dwo_unit_table (struct objfile *objfile); |
1440 | ||
1441 | static struct dwo_unit *lookup_dwo_comp_unit | |
1442 | (struct dwarf2_per_cu_data *, char *, const char *, ULONGEST); | |
1443 | ||
1444 | static struct dwo_unit *lookup_dwo_type_unit | |
1445 | (struct signatured_type *, char *, const char *); | |
1446 | ||
1447 | static void free_dwo_file_cleanup (void *); | |
1448 | ||
1449 | static void munmap_section_buffer (struct dwarf2_section_info *); | |
1450 | ||
95554aad TT |
1451 | static void process_cu_includes (void); |
1452 | ||
9291a0cd TT |
1453 | #if WORDS_BIGENDIAN |
1454 | ||
1455 | /* Convert VALUE between big- and little-endian. */ | |
1456 | static offset_type | |
1457 | byte_swap (offset_type value) | |
1458 | { | |
1459 | offset_type result; | |
1460 | ||
1461 | result = (value & 0xff) << 24; | |
1462 | result |= (value & 0xff00) << 8; | |
1463 | result |= (value & 0xff0000) >> 8; | |
1464 | result |= (value & 0xff000000) >> 24; | |
1465 | return result; | |
1466 | } | |
1467 | ||
1468 | #define MAYBE_SWAP(V) byte_swap (V) | |
1469 | ||
1470 | #else | |
1471 | #define MAYBE_SWAP(V) (V) | |
1472 | #endif /* WORDS_BIGENDIAN */ | |
1473 | ||
1474 | /* The suffix for an index file. */ | |
1475 | #define INDEX_SUFFIX ".gdb-index" | |
1476 | ||
3da10d80 KS |
1477 | static const char *dwarf2_physname (char *name, struct die_info *die, |
1478 | struct dwarf2_cu *cu); | |
1479 | ||
c906108c | 1480 | /* Try to locate the sections we need for DWARF 2 debugging |
251d32d9 TG |
1481 | information and return true if we have enough to do something. |
1482 | NAMES points to the dwarf2 section names, or is NULL if the standard | |
1483 | ELF names are used. */ | |
c906108c SS |
1484 | |
1485 | int | |
251d32d9 TG |
1486 | dwarf2_has_info (struct objfile *objfile, |
1487 | const struct dwarf2_debug_sections *names) | |
c906108c | 1488 | { |
be391dca TT |
1489 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); |
1490 | if (!dwarf2_per_objfile) | |
1491 | { | |
1492 | /* Initialize per-objfile state. */ | |
1493 | struct dwarf2_per_objfile *data | |
1494 | = obstack_alloc (&objfile->objfile_obstack, sizeof (*data)); | |
9a619af0 | 1495 | |
be391dca TT |
1496 | memset (data, 0, sizeof (*data)); |
1497 | set_objfile_data (objfile, dwarf2_objfile_data_key, data); | |
1498 | dwarf2_per_objfile = data; | |
6502dd73 | 1499 | |
251d32d9 TG |
1500 | bfd_map_over_sections (objfile->obfd, dwarf2_locate_sections, |
1501 | (void *) names); | |
be391dca TT |
1502 | dwarf2_per_objfile->objfile = objfile; |
1503 | } | |
1504 | return (dwarf2_per_objfile->info.asection != NULL | |
1505 | && dwarf2_per_objfile->abbrev.asection != NULL); | |
c906108c SS |
1506 | } |
1507 | ||
251d32d9 TG |
1508 | /* When loading sections, we look either for uncompressed section or for |
1509 | compressed section names. */ | |
233a11ab CS |
1510 | |
1511 | static int | |
251d32d9 TG |
1512 | section_is_p (const char *section_name, |
1513 | const struct dwarf2_section_names *names) | |
233a11ab | 1514 | { |
251d32d9 TG |
1515 | if (names->normal != NULL |
1516 | && strcmp (section_name, names->normal) == 0) | |
1517 | return 1; | |
1518 | if (names->compressed != NULL | |
1519 | && strcmp (section_name, names->compressed) == 0) | |
1520 | return 1; | |
1521 | return 0; | |
233a11ab CS |
1522 | } |
1523 | ||
c906108c SS |
1524 | /* This function is mapped across the sections and remembers the |
1525 | offset and size of each of the debugging sections we are interested | |
1526 | in. */ | |
1527 | ||
1528 | static void | |
251d32d9 | 1529 | dwarf2_locate_sections (bfd *abfd, asection *sectp, void *vnames) |
c906108c | 1530 | { |
251d32d9 TG |
1531 | const struct dwarf2_debug_sections *names; |
1532 | ||
1533 | if (vnames == NULL) | |
1534 | names = &dwarf2_elf_names; | |
1535 | else | |
1536 | names = (const struct dwarf2_debug_sections *) vnames; | |
1537 | ||
1538 | if (section_is_p (sectp->name, &names->info)) | |
c906108c | 1539 | { |
dce234bc PP |
1540 | dwarf2_per_objfile->info.asection = sectp; |
1541 | dwarf2_per_objfile->info.size = bfd_get_section_size (sectp); | |
c906108c | 1542 | } |
251d32d9 | 1543 | else if (section_is_p (sectp->name, &names->abbrev)) |
c906108c | 1544 | { |
dce234bc PP |
1545 | dwarf2_per_objfile->abbrev.asection = sectp; |
1546 | dwarf2_per_objfile->abbrev.size = bfd_get_section_size (sectp); | |
c906108c | 1547 | } |
251d32d9 | 1548 | else if (section_is_p (sectp->name, &names->line)) |
c906108c | 1549 | { |
dce234bc PP |
1550 | dwarf2_per_objfile->line.asection = sectp; |
1551 | dwarf2_per_objfile->line.size = bfd_get_section_size (sectp); | |
c906108c | 1552 | } |
251d32d9 | 1553 | else if (section_is_p (sectp->name, &names->loc)) |
c906108c | 1554 | { |
dce234bc PP |
1555 | dwarf2_per_objfile->loc.asection = sectp; |
1556 | dwarf2_per_objfile->loc.size = bfd_get_section_size (sectp); | |
c906108c | 1557 | } |
251d32d9 | 1558 | else if (section_is_p (sectp->name, &names->macinfo)) |
c906108c | 1559 | { |
dce234bc PP |
1560 | dwarf2_per_objfile->macinfo.asection = sectp; |
1561 | dwarf2_per_objfile->macinfo.size = bfd_get_section_size (sectp); | |
c906108c | 1562 | } |
cf2c3c16 TT |
1563 | else if (section_is_p (sectp->name, &names->macro)) |
1564 | { | |
1565 | dwarf2_per_objfile->macro.asection = sectp; | |
1566 | dwarf2_per_objfile->macro.size = bfd_get_section_size (sectp); | |
1567 | } | |
251d32d9 | 1568 | else if (section_is_p (sectp->name, &names->str)) |
c906108c | 1569 | { |
dce234bc PP |
1570 | dwarf2_per_objfile->str.asection = sectp; |
1571 | dwarf2_per_objfile->str.size = bfd_get_section_size (sectp); | |
c906108c | 1572 | } |
3019eac3 DE |
1573 | else if (section_is_p (sectp->name, &names->addr)) |
1574 | { | |
1575 | dwarf2_per_objfile->addr.asection = sectp; | |
1576 | dwarf2_per_objfile->addr.size = bfd_get_section_size (sectp); | |
1577 | } | |
251d32d9 | 1578 | else if (section_is_p (sectp->name, &names->frame)) |
b6af0555 | 1579 | { |
dce234bc PP |
1580 | dwarf2_per_objfile->frame.asection = sectp; |
1581 | dwarf2_per_objfile->frame.size = bfd_get_section_size (sectp); | |
b6af0555 | 1582 | } |
251d32d9 | 1583 | else if (section_is_p (sectp->name, &names->eh_frame)) |
b6af0555 | 1584 | { |
3799ccc6 | 1585 | flagword aflag = bfd_get_section_flags (ignore_abfd, sectp); |
9a619af0 | 1586 | |
3799ccc6 EZ |
1587 | if (aflag & SEC_HAS_CONTENTS) |
1588 | { | |
dce234bc PP |
1589 | dwarf2_per_objfile->eh_frame.asection = sectp; |
1590 | dwarf2_per_objfile->eh_frame.size = bfd_get_section_size (sectp); | |
3799ccc6 | 1591 | } |
b6af0555 | 1592 | } |
251d32d9 | 1593 | else if (section_is_p (sectp->name, &names->ranges)) |
af34e669 | 1594 | { |
dce234bc PP |
1595 | dwarf2_per_objfile->ranges.asection = sectp; |
1596 | dwarf2_per_objfile->ranges.size = bfd_get_section_size (sectp); | |
af34e669 | 1597 | } |
251d32d9 | 1598 | else if (section_is_p (sectp->name, &names->types)) |
348e048f | 1599 | { |
8b70b953 TT |
1600 | struct dwarf2_section_info type_section; |
1601 | ||
1602 | memset (&type_section, 0, sizeof (type_section)); | |
1603 | type_section.asection = sectp; | |
1604 | type_section.size = bfd_get_section_size (sectp); | |
1605 | ||
1606 | VEC_safe_push (dwarf2_section_info_def, dwarf2_per_objfile->types, | |
1607 | &type_section); | |
348e048f | 1608 | } |
251d32d9 | 1609 | else if (section_is_p (sectp->name, &names->gdb_index)) |
9291a0cd TT |
1610 | { |
1611 | dwarf2_per_objfile->gdb_index.asection = sectp; | |
1612 | dwarf2_per_objfile->gdb_index.size = bfd_get_section_size (sectp); | |
1613 | } | |
dce234bc | 1614 | |
72dca2f5 FR |
1615 | if ((bfd_get_section_flags (abfd, sectp) & SEC_LOAD) |
1616 | && bfd_section_vma (abfd, sectp) == 0) | |
1617 | dwarf2_per_objfile->has_section_at_zero = 1; | |
c906108c SS |
1618 | } |
1619 | ||
dce234bc PP |
1620 | /* Decompress a section that was compressed using zlib. Store the |
1621 | decompressed buffer, and its size, in OUTBUF and OUTSIZE. */ | |
233a11ab CS |
1622 | |
1623 | static void | |
dce234bc PP |
1624 | zlib_decompress_section (struct objfile *objfile, asection *sectp, |
1625 | gdb_byte **outbuf, bfd_size_type *outsize) | |
1626 | { | |
3019eac3 | 1627 | bfd *abfd = sectp->owner; |
dce234bc PP |
1628 | #ifndef HAVE_ZLIB_H |
1629 | error (_("Support for zlib-compressed DWARF data (from '%s') " | |
1630 | "is disabled in this copy of GDB"), | |
1631 | bfd_get_filename (abfd)); | |
1632 | #else | |
1633 | bfd_size_type compressed_size = bfd_get_section_size (sectp); | |
1634 | gdb_byte *compressed_buffer = xmalloc (compressed_size); | |
affddf13 | 1635 | struct cleanup *cleanup = make_cleanup (xfree, compressed_buffer); |
dce234bc PP |
1636 | bfd_size_type uncompressed_size; |
1637 | gdb_byte *uncompressed_buffer; | |
1638 | z_stream strm; | |
1639 | int rc; | |
1640 | int header_size = 12; | |
1641 | ||
1642 | if (bfd_seek (abfd, sectp->filepos, SEEK_SET) != 0 | |
3e43a32a MS |
1643 | || bfd_bread (compressed_buffer, |
1644 | compressed_size, abfd) != compressed_size) | |
dce234bc PP |
1645 | error (_("Dwarf Error: Can't read DWARF data from '%s'"), |
1646 | bfd_get_filename (abfd)); | |
1647 | ||
1648 | /* Read the zlib header. In this case, it should be "ZLIB" followed | |
1649 | by the uncompressed section size, 8 bytes in big-endian order. */ | |
1650 | if (compressed_size < header_size | |
1651 | || strncmp (compressed_buffer, "ZLIB", 4) != 0) | |
1652 | error (_("Dwarf Error: Corrupt DWARF ZLIB header from '%s'"), | |
1653 | bfd_get_filename (abfd)); | |
1654 | uncompressed_size = compressed_buffer[4]; uncompressed_size <<= 8; | |
1655 | uncompressed_size += compressed_buffer[5]; uncompressed_size <<= 8; | |
1656 | uncompressed_size += compressed_buffer[6]; uncompressed_size <<= 8; | |
1657 | uncompressed_size += compressed_buffer[7]; uncompressed_size <<= 8; | |
1658 | uncompressed_size += compressed_buffer[8]; uncompressed_size <<= 8; | |
1659 | uncompressed_size += compressed_buffer[9]; uncompressed_size <<= 8; | |
1660 | uncompressed_size += compressed_buffer[10]; uncompressed_size <<= 8; | |
1661 | uncompressed_size += compressed_buffer[11]; | |
1662 | ||
1663 | /* It is possible the section consists of several compressed | |
1664 | buffers concatenated together, so we uncompress in a loop. */ | |
1665 | strm.zalloc = NULL; | |
1666 | strm.zfree = NULL; | |
1667 | strm.opaque = NULL; | |
1668 | strm.avail_in = compressed_size - header_size; | |
1669 | strm.next_in = (Bytef*) compressed_buffer + header_size; | |
1670 | strm.avail_out = uncompressed_size; | |
1671 | uncompressed_buffer = obstack_alloc (&objfile->objfile_obstack, | |
1672 | uncompressed_size); | |
1673 | rc = inflateInit (&strm); | |
1674 | while (strm.avail_in > 0) | |
1675 | { | |
1676 | if (rc != Z_OK) | |
1677 | error (_("Dwarf Error: setting up DWARF uncompression in '%s': %d"), | |
1678 | bfd_get_filename (abfd), rc); | |
1679 | strm.next_out = ((Bytef*) uncompressed_buffer | |
1680 | + (uncompressed_size - strm.avail_out)); | |
1681 | rc = inflate (&strm, Z_FINISH); | |
1682 | if (rc != Z_STREAM_END) | |
1683 | error (_("Dwarf Error: zlib error uncompressing from '%s': %d"), | |
1684 | bfd_get_filename (abfd), rc); | |
1685 | rc = inflateReset (&strm); | |
1686 | } | |
1687 | rc = inflateEnd (&strm); | |
1688 | if (rc != Z_OK | |
1689 | || strm.avail_out != 0) | |
1690 | error (_("Dwarf Error: concluding DWARF uncompression in '%s': %d"), | |
1691 | bfd_get_filename (abfd), rc); | |
1692 | ||
affddf13 | 1693 | do_cleanups (cleanup); |
dce234bc PP |
1694 | *outbuf = uncompressed_buffer; |
1695 | *outsize = uncompressed_size; | |
1696 | #endif | |
233a11ab CS |
1697 | } |
1698 | ||
fceca515 DE |
1699 | /* A helper function that decides whether a section is empty, |
1700 | or not present. */ | |
9e0ac564 TT |
1701 | |
1702 | static int | |
1703 | dwarf2_section_empty_p (struct dwarf2_section_info *info) | |
1704 | { | |
1705 | return info->asection == NULL || info->size == 0; | |
1706 | } | |
1707 | ||
3019eac3 DE |
1708 | /* Read the contents of the section INFO. |
1709 | OBJFILE is the main object file, but not necessarily the file where | |
1710 | the section comes from. E.g., for DWO files INFO->asection->owner | |
1711 | is the bfd of the DWO file. | |
dce234bc | 1712 | If the section is compressed, uncompress it before returning. */ |
c906108c | 1713 | |
dce234bc PP |
1714 | static void |
1715 | dwarf2_read_section (struct objfile *objfile, struct dwarf2_section_info *info) | |
c906108c | 1716 | { |
dce234bc | 1717 | asection *sectp = info->asection; |
3019eac3 | 1718 | bfd *abfd; |
dce234bc PP |
1719 | gdb_byte *buf, *retbuf; |
1720 | unsigned char header[4]; | |
c906108c | 1721 | |
be391dca TT |
1722 | if (info->readin) |
1723 | return; | |
dce234bc | 1724 | info->buffer = NULL; |
b315ab21 | 1725 | info->map_addr = NULL; |
be391dca | 1726 | info->readin = 1; |
188dd5d6 | 1727 | |
9e0ac564 | 1728 | if (dwarf2_section_empty_p (info)) |
dce234bc | 1729 | return; |
c906108c | 1730 | |
3019eac3 DE |
1731 | /* Note that ABFD may not be from OBJFILE, e.g. a DWO section. */ |
1732 | abfd = sectp->owner; | |
1733 | ||
dce234bc PP |
1734 | /* Check if the file has a 4-byte header indicating compression. */ |
1735 | if (info->size > sizeof (header) | |
1736 | && bfd_seek (abfd, sectp->filepos, SEEK_SET) == 0 | |
1737 | && bfd_bread (header, sizeof (header), abfd) == sizeof (header)) | |
1738 | { | |
1739 | /* Upon decompression, update the buffer and its size. */ | |
1740 | if (strncmp (header, "ZLIB", sizeof (header)) == 0) | |
1741 | { | |
1742 | zlib_decompress_section (objfile, sectp, &info->buffer, | |
1743 | &info->size); | |
1744 | return; | |
1745 | } | |
1746 | } | |
4bdf3d34 | 1747 | |
dce234bc PP |
1748 | #ifdef HAVE_MMAP |
1749 | if (pagesize == 0) | |
1750 | pagesize = getpagesize (); | |
2e276125 | 1751 | |
dce234bc PP |
1752 | /* Only try to mmap sections which are large enough: we don't want to |
1753 | waste space due to fragmentation. Also, only try mmap for sections | |
1754 | without relocations. */ | |
1755 | ||
1756 | if (info->size > 4 * pagesize && (sectp->flags & SEC_RELOC) == 0) | |
1757 | { | |
b315ab21 TG |
1758 | info->buffer = bfd_mmap (abfd, 0, info->size, PROT_READ, |
1759 | MAP_PRIVATE, sectp->filepos, | |
1760 | &info->map_addr, &info->map_len); | |
dce234bc | 1761 | |
b315ab21 | 1762 | if ((caddr_t)info->buffer != MAP_FAILED) |
dce234bc | 1763 | { |
be391dca | 1764 | #if HAVE_POSIX_MADVISE |
b315ab21 | 1765 | posix_madvise (info->map_addr, info->map_len, POSIX_MADV_WILLNEED); |
be391dca | 1766 | #endif |
dce234bc PP |
1767 | return; |
1768 | } | |
1769 | } | |
1770 | #endif | |
1771 | ||
1772 | /* If we get here, we are a normal, not-compressed section. */ | |
1773 | info->buffer = buf | |
1774 | = obstack_alloc (&objfile->objfile_obstack, info->size); | |
1775 | ||
1776 | /* When debugging .o files, we may need to apply relocations; see | |
1777 | http://sourceware.org/ml/gdb-patches/2002-04/msg00136.html . | |
1778 | We never compress sections in .o files, so we only need to | |
1779 | try this when the section is not compressed. */ | |
ac8035ab | 1780 | retbuf = symfile_relocate_debug_section (objfile, sectp, buf); |
dce234bc PP |
1781 | if (retbuf != NULL) |
1782 | { | |
1783 | info->buffer = retbuf; | |
1784 | return; | |
1785 | } | |
1786 | ||
1787 | if (bfd_seek (abfd, sectp->filepos, SEEK_SET) != 0 | |
1788 | || bfd_bread (buf, info->size, abfd) != info->size) | |
1789 | error (_("Dwarf Error: Can't read DWARF data from '%s'"), | |
1790 | bfd_get_filename (abfd)); | |
1791 | } | |
1792 | ||
9e0ac564 TT |
1793 | /* A helper function that returns the size of a section in a safe way. |
1794 | If you are positive that the section has been read before using the | |
1795 | size, then it is safe to refer to the dwarf2_section_info object's | |
1796 | "size" field directly. In other cases, you must call this | |
1797 | function, because for compressed sections the size field is not set | |
1798 | correctly until the section has been read. */ | |
1799 | ||
1800 | static bfd_size_type | |
1801 | dwarf2_section_size (struct objfile *objfile, | |
1802 | struct dwarf2_section_info *info) | |
1803 | { | |
1804 | if (!info->readin) | |
1805 | dwarf2_read_section (objfile, info); | |
1806 | return info->size; | |
1807 | } | |
1808 | ||
dce234bc | 1809 | /* Fill in SECTP, BUFP and SIZEP with section info, given OBJFILE and |
0963b4bd | 1810 | SECTION_NAME. */ |
af34e669 | 1811 | |
dce234bc | 1812 | void |
3017a003 TG |
1813 | dwarf2_get_section_info (struct objfile *objfile, |
1814 | enum dwarf2_section_enum sect, | |
dce234bc PP |
1815 | asection **sectp, gdb_byte **bufp, |
1816 | bfd_size_type *sizep) | |
1817 | { | |
1818 | struct dwarf2_per_objfile *data | |
1819 | = objfile_data (objfile, dwarf2_objfile_data_key); | |
1820 | struct dwarf2_section_info *info; | |
a3b2a86b TT |
1821 | |
1822 | /* We may see an objfile without any DWARF, in which case we just | |
1823 | return nothing. */ | |
1824 | if (data == NULL) | |
1825 | { | |
1826 | *sectp = NULL; | |
1827 | *bufp = NULL; | |
1828 | *sizep = 0; | |
1829 | return; | |
1830 | } | |
3017a003 TG |
1831 | switch (sect) |
1832 | { | |
1833 | case DWARF2_DEBUG_FRAME: | |
1834 | info = &data->frame; | |
1835 | break; | |
1836 | case DWARF2_EH_FRAME: | |
1837 | info = &data->eh_frame; | |
1838 | break; | |
1839 | default: | |
1840 | gdb_assert_not_reached ("unexpected section"); | |
1841 | } | |
dce234bc | 1842 | |
9e0ac564 | 1843 | dwarf2_read_section (objfile, info); |
dce234bc PP |
1844 | |
1845 | *sectp = info->asection; | |
1846 | *bufp = info->buffer; | |
1847 | *sizep = info->size; | |
1848 | } | |
1849 | ||
9291a0cd | 1850 | \f |
7b9f3c50 DE |
1851 | /* DWARF quick_symbols_functions support. */ |
1852 | ||
1853 | /* TUs can share .debug_line entries, and there can be a lot more TUs than | |
1854 | unique line tables, so we maintain a separate table of all .debug_line | |
1855 | derived entries to support the sharing. | |
1856 | All the quick functions need is the list of file names. We discard the | |
1857 | line_header when we're done and don't need to record it here. */ | |
1858 | struct quick_file_names | |
1859 | { | |
1860 | /* The offset in .debug_line of the line table. We hash on this. */ | |
1861 | unsigned int offset; | |
1862 | ||
1863 | /* The number of entries in file_names, real_names. */ | |
1864 | unsigned int num_file_names; | |
1865 | ||
1866 | /* The file names from the line table, after being run through | |
1867 | file_full_name. */ | |
1868 | const char **file_names; | |
1869 | ||
1870 | /* The file names from the line table after being run through | |
1871 | gdb_realpath. These are computed lazily. */ | |
1872 | const char **real_names; | |
1873 | }; | |
1874 | ||
1875 | /* When using the index (and thus not using psymtabs), each CU has an | |
1876 | object of this type. This is used to hold information needed by | |
1877 | the various "quick" methods. */ | |
1878 | struct dwarf2_per_cu_quick_data | |
1879 | { | |
1880 | /* The file table. This can be NULL if there was no file table | |
1881 | or it's currently not read in. | |
1882 | NOTE: This points into dwarf2_per_objfile->quick_file_names_table. */ | |
1883 | struct quick_file_names *file_names; | |
1884 | ||
1885 | /* The corresponding symbol table. This is NULL if symbols for this | |
1886 | CU have not yet been read. */ | |
1887 | struct symtab *symtab; | |
1888 | ||
1889 | /* A temporary mark bit used when iterating over all CUs in | |
1890 | expand_symtabs_matching. */ | |
1891 | unsigned int mark : 1; | |
1892 | ||
1893 | /* True if we've tried to read the file table and found there isn't one. | |
1894 | There will be no point in trying to read it again next time. */ | |
1895 | unsigned int no_file_data : 1; | |
1896 | }; | |
1897 | ||
1898 | /* Hash function for a quick_file_names. */ | |
1899 | ||
1900 | static hashval_t | |
1901 | hash_file_name_entry (const void *e) | |
1902 | { | |
1903 | const struct quick_file_names *file_data = e; | |
1904 | ||
1905 | return file_data->offset; | |
1906 | } | |
1907 | ||
1908 | /* Equality function for a quick_file_names. */ | |
1909 | ||
1910 | static int | |
1911 | eq_file_name_entry (const void *a, const void *b) | |
1912 | { | |
1913 | const struct quick_file_names *ea = a; | |
1914 | const struct quick_file_names *eb = b; | |
1915 | ||
1916 | return ea->offset == eb->offset; | |
1917 | } | |
1918 | ||
1919 | /* Delete function for a quick_file_names. */ | |
1920 | ||
1921 | static void | |
1922 | delete_file_name_entry (void *e) | |
1923 | { | |
1924 | struct quick_file_names *file_data = e; | |
1925 | int i; | |
1926 | ||
1927 | for (i = 0; i < file_data->num_file_names; ++i) | |
1928 | { | |
1929 | xfree ((void*) file_data->file_names[i]); | |
1930 | if (file_data->real_names) | |
1931 | xfree ((void*) file_data->real_names[i]); | |
1932 | } | |
1933 | ||
1934 | /* The space for the struct itself lives on objfile_obstack, | |
1935 | so we don't free it here. */ | |
1936 | } | |
1937 | ||
1938 | /* Create a quick_file_names hash table. */ | |
1939 | ||
1940 | static htab_t | |
1941 | create_quick_file_names_table (unsigned int nr_initial_entries) | |
1942 | { | |
1943 | return htab_create_alloc (nr_initial_entries, | |
1944 | hash_file_name_entry, eq_file_name_entry, | |
1945 | delete_file_name_entry, xcalloc, xfree); | |
1946 | } | |
9291a0cd | 1947 | |
918dd910 JK |
1948 | /* Read in PER_CU->CU. This function is unrelated to symtabs, symtab would |
1949 | have to be created afterwards. You should call age_cached_comp_units after | |
1950 | processing PER_CU->CU. dw2_setup must have been already called. */ | |
1951 | ||
1952 | static void | |
1953 | load_cu (struct dwarf2_per_cu_data *per_cu) | |
1954 | { | |
3019eac3 | 1955 | if (per_cu->is_debug_types) |
e5fe5e75 | 1956 | load_full_type_unit (per_cu); |
918dd910 | 1957 | else |
95554aad | 1958 | load_full_comp_unit (per_cu, language_minimal); |
918dd910 | 1959 | |
918dd910 | 1960 | gdb_assert (per_cu->cu != NULL); |
2dc860c0 DE |
1961 | |
1962 | dwarf2_find_base_address (per_cu->cu->dies, per_cu->cu); | |
918dd910 JK |
1963 | } |
1964 | ||
a0f42c21 | 1965 | /* Read in the symbols for PER_CU. */ |
2fdf6df6 | 1966 | |
9291a0cd | 1967 | static void |
a0f42c21 | 1968 | dw2_do_instantiate_symtab (struct dwarf2_per_cu_data *per_cu) |
9291a0cd TT |
1969 | { |
1970 | struct cleanup *back_to; | |
1971 | ||
1972 | back_to = make_cleanup (dwarf2_release_queue, NULL); | |
1973 | ||
95554aad TT |
1974 | if (dwarf2_per_objfile->using_index |
1975 | ? per_cu->v.quick->symtab == NULL | |
1976 | : (per_cu->v.psymtab == NULL || !per_cu->v.psymtab->readin)) | |
1977 | { | |
1978 | queue_comp_unit (per_cu, language_minimal); | |
1979 | load_cu (per_cu); | |
1980 | } | |
9291a0cd | 1981 | |
a0f42c21 | 1982 | process_queue (); |
9291a0cd TT |
1983 | |
1984 | /* Age the cache, releasing compilation units that have not | |
1985 | been used recently. */ | |
1986 | age_cached_comp_units (); | |
1987 | ||
1988 | do_cleanups (back_to); | |
1989 | } | |
1990 | ||
1991 | /* Ensure that the symbols for PER_CU have been read in. OBJFILE is | |
1992 | the objfile from which this CU came. Returns the resulting symbol | |
1993 | table. */ | |
2fdf6df6 | 1994 | |
9291a0cd | 1995 | static struct symtab * |
a0f42c21 | 1996 | dw2_instantiate_symtab (struct dwarf2_per_cu_data *per_cu) |
9291a0cd | 1997 | { |
95554aad | 1998 | gdb_assert (dwarf2_per_objfile->using_index); |
9291a0cd TT |
1999 | if (!per_cu->v.quick->symtab) |
2000 | { | |
2001 | struct cleanup *back_to = make_cleanup (free_cached_comp_units, NULL); | |
2002 | increment_reading_symtab (); | |
a0f42c21 | 2003 | dw2_do_instantiate_symtab (per_cu); |
95554aad | 2004 | process_cu_includes (); |
9291a0cd TT |
2005 | do_cleanups (back_to); |
2006 | } | |
2007 | return per_cu->v.quick->symtab; | |
2008 | } | |
2009 | ||
1fd400ff | 2010 | /* Return the CU given its index. */ |
2fdf6df6 | 2011 | |
1fd400ff TT |
2012 | static struct dwarf2_per_cu_data * |
2013 | dw2_get_cu (int index) | |
2014 | { | |
2015 | if (index >= dwarf2_per_objfile->n_comp_units) | |
2016 | { | |
2017 | index -= dwarf2_per_objfile->n_comp_units; | |
d467dd73 | 2018 | return dwarf2_per_objfile->all_type_units[index]; |
1fd400ff TT |
2019 | } |
2020 | return dwarf2_per_objfile->all_comp_units[index]; | |
2021 | } | |
2022 | ||
9291a0cd TT |
2023 | /* A helper function that knows how to read a 64-bit value in a way |
2024 | that doesn't make gdb die. Returns 1 if the conversion went ok, 0 | |
2025 | otherwise. */ | |
2fdf6df6 | 2026 | |
9291a0cd TT |
2027 | static int |
2028 | extract_cu_value (const char *bytes, ULONGEST *result) | |
2029 | { | |
2030 | if (sizeof (ULONGEST) < 8) | |
2031 | { | |
2032 | int i; | |
2033 | ||
2034 | /* Ignore the upper 4 bytes if they are all zero. */ | |
2035 | for (i = 0; i < 4; ++i) | |
2036 | if (bytes[i + 4] != 0) | |
2037 | return 0; | |
2038 | ||
2039 | *result = extract_unsigned_integer (bytes, 4, BFD_ENDIAN_LITTLE); | |
2040 | } | |
2041 | else | |
2042 | *result = extract_unsigned_integer (bytes, 8, BFD_ENDIAN_LITTLE); | |
2043 | return 1; | |
2044 | } | |
2045 | ||
2046 | /* Read the CU list from the mapped index, and use it to create all | |
2047 | the CU objects for this objfile. Return 0 if something went wrong, | |
2048 | 1 if everything went ok. */ | |
2fdf6df6 | 2049 | |
9291a0cd | 2050 | static int |
1fd400ff TT |
2051 | create_cus_from_index (struct objfile *objfile, const gdb_byte *cu_list, |
2052 | offset_type cu_list_elements) | |
9291a0cd TT |
2053 | { |
2054 | offset_type i; | |
9291a0cd TT |
2055 | |
2056 | dwarf2_per_objfile->n_comp_units = cu_list_elements / 2; | |
2057 | dwarf2_per_objfile->all_comp_units | |
2058 | = obstack_alloc (&objfile->objfile_obstack, | |
2059 | dwarf2_per_objfile->n_comp_units | |
2060 | * sizeof (struct dwarf2_per_cu_data *)); | |
2061 | ||
2062 | for (i = 0; i < cu_list_elements; i += 2) | |
2063 | { | |
2064 | struct dwarf2_per_cu_data *the_cu; | |
2065 | ULONGEST offset, length; | |
2066 | ||
2067 | if (!extract_cu_value (cu_list, &offset) | |
2068 | || !extract_cu_value (cu_list + 8, &length)) | |
2069 | return 0; | |
2070 | cu_list += 2 * 8; | |
2071 | ||
2072 | the_cu = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
2073 | struct dwarf2_per_cu_data); | |
b64f50a1 | 2074 | the_cu->offset.sect_off = offset; |
9291a0cd TT |
2075 | the_cu->length = length; |
2076 | the_cu->objfile = objfile; | |
3019eac3 | 2077 | the_cu->info_or_types_section = &dwarf2_per_objfile->info; |
9291a0cd TT |
2078 | the_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
2079 | struct dwarf2_per_cu_quick_data); | |
2080 | dwarf2_per_objfile->all_comp_units[i / 2] = the_cu; | |
2081 | } | |
2082 | ||
2083 | return 1; | |
2084 | } | |
2085 | ||
1fd400ff | 2086 | /* Create the signatured type hash table from the index. */ |
673bfd45 | 2087 | |
1fd400ff | 2088 | static int |
673bfd45 | 2089 | create_signatured_type_table_from_index (struct objfile *objfile, |
8b70b953 | 2090 | struct dwarf2_section_info *section, |
673bfd45 DE |
2091 | const gdb_byte *bytes, |
2092 | offset_type elements) | |
1fd400ff TT |
2093 | { |
2094 | offset_type i; | |
673bfd45 | 2095 | htab_t sig_types_hash; |
1fd400ff | 2096 | |
d467dd73 DE |
2097 | dwarf2_per_objfile->n_type_units = elements / 3; |
2098 | dwarf2_per_objfile->all_type_units | |
1fd400ff | 2099 | = obstack_alloc (&objfile->objfile_obstack, |
d467dd73 | 2100 | dwarf2_per_objfile->n_type_units |
1fd400ff TT |
2101 | * sizeof (struct dwarf2_per_cu_data *)); |
2102 | ||
673bfd45 | 2103 | sig_types_hash = allocate_signatured_type_table (objfile); |
1fd400ff TT |
2104 | |
2105 | for (i = 0; i < elements; i += 3) | |
2106 | { | |
52dc124a DE |
2107 | struct signatured_type *sig_type; |
2108 | ULONGEST offset, type_offset_in_tu, signature; | |
1fd400ff TT |
2109 | void **slot; |
2110 | ||
2111 | if (!extract_cu_value (bytes, &offset) | |
52dc124a | 2112 | || !extract_cu_value (bytes + 8, &type_offset_in_tu)) |
1fd400ff TT |
2113 | return 0; |
2114 | signature = extract_unsigned_integer (bytes + 16, 8, BFD_ENDIAN_LITTLE); | |
2115 | bytes += 3 * 8; | |
2116 | ||
52dc124a | 2117 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
1fd400ff | 2118 | struct signatured_type); |
52dc124a | 2119 | sig_type->signature = signature; |
3019eac3 DE |
2120 | sig_type->type_offset_in_tu.cu_off = type_offset_in_tu; |
2121 | sig_type->per_cu.is_debug_types = 1; | |
2122 | sig_type->per_cu.info_or_types_section = section; | |
52dc124a DE |
2123 | sig_type->per_cu.offset.sect_off = offset; |
2124 | sig_type->per_cu.objfile = objfile; | |
2125 | sig_type->per_cu.v.quick | |
1fd400ff TT |
2126 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
2127 | struct dwarf2_per_cu_quick_data); | |
2128 | ||
52dc124a DE |
2129 | slot = htab_find_slot (sig_types_hash, sig_type, INSERT); |
2130 | *slot = sig_type; | |
1fd400ff | 2131 | |
52dc124a | 2132 | dwarf2_per_objfile->all_type_units[i / 3] = &sig_type->per_cu; |
1fd400ff TT |
2133 | } |
2134 | ||
673bfd45 | 2135 | dwarf2_per_objfile->signatured_types = sig_types_hash; |
1fd400ff TT |
2136 | |
2137 | return 1; | |
2138 | } | |
2139 | ||
9291a0cd TT |
2140 | /* Read the address map data from the mapped index, and use it to |
2141 | populate the objfile's psymtabs_addrmap. */ | |
2fdf6df6 | 2142 | |
9291a0cd TT |
2143 | static void |
2144 | create_addrmap_from_index (struct objfile *objfile, struct mapped_index *index) | |
2145 | { | |
2146 | const gdb_byte *iter, *end; | |
2147 | struct obstack temp_obstack; | |
2148 | struct addrmap *mutable_map; | |
2149 | struct cleanup *cleanup; | |
2150 | CORE_ADDR baseaddr; | |
2151 | ||
2152 | obstack_init (&temp_obstack); | |
2153 | cleanup = make_cleanup_obstack_free (&temp_obstack); | |
2154 | mutable_map = addrmap_create_mutable (&temp_obstack); | |
2155 | ||
2156 | iter = index->address_table; | |
2157 | end = iter + index->address_table_size; | |
2158 | ||
2159 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
2160 | ||
2161 | while (iter < end) | |
2162 | { | |
2163 | ULONGEST hi, lo, cu_index; | |
2164 | lo = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
2165 | iter += 8; | |
2166 | hi = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
2167 | iter += 8; | |
2168 | cu_index = extract_unsigned_integer (iter, 4, BFD_ENDIAN_LITTLE); | |
2169 | iter += 4; | |
2170 | ||
2171 | addrmap_set_empty (mutable_map, lo + baseaddr, hi + baseaddr - 1, | |
1fd400ff | 2172 | dw2_get_cu (cu_index)); |
9291a0cd TT |
2173 | } |
2174 | ||
2175 | objfile->psymtabs_addrmap = addrmap_create_fixed (mutable_map, | |
2176 | &objfile->objfile_obstack); | |
2177 | do_cleanups (cleanup); | |
2178 | } | |
2179 | ||
59d7bcaf JK |
2180 | /* The hash function for strings in the mapped index. This is the same as |
2181 | SYMBOL_HASH_NEXT, but we keep a separate copy to maintain control over the | |
2182 | implementation. This is necessary because the hash function is tied to the | |
2183 | format of the mapped index file. The hash values do not have to match with | |
559a7a62 JK |
2184 | SYMBOL_HASH_NEXT. |
2185 | ||
2186 | Use INT_MAX for INDEX_VERSION if you generate the current index format. */ | |
2fdf6df6 | 2187 | |
9291a0cd | 2188 | static hashval_t |
559a7a62 | 2189 | mapped_index_string_hash (int index_version, const void *p) |
9291a0cd TT |
2190 | { |
2191 | const unsigned char *str = (const unsigned char *) p; | |
2192 | hashval_t r = 0; | |
2193 | unsigned char c; | |
2194 | ||
2195 | while ((c = *str++) != 0) | |
559a7a62 JK |
2196 | { |
2197 | if (index_version >= 5) | |
2198 | c = tolower (c); | |
2199 | r = r * 67 + c - 113; | |
2200 | } | |
9291a0cd TT |
2201 | |
2202 | return r; | |
2203 | } | |
2204 | ||
2205 | /* Find a slot in the mapped index INDEX for the object named NAME. | |
2206 | If NAME is found, set *VEC_OUT to point to the CU vector in the | |
2207 | constant pool and return 1. If NAME cannot be found, return 0. */ | |
2fdf6df6 | 2208 | |
9291a0cd TT |
2209 | static int |
2210 | find_slot_in_mapped_hash (struct mapped_index *index, const char *name, | |
2211 | offset_type **vec_out) | |
2212 | { | |
0cf03b49 JK |
2213 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
2214 | offset_type hash; | |
9291a0cd | 2215 | offset_type slot, step; |
559a7a62 | 2216 | int (*cmp) (const char *, const char *); |
9291a0cd | 2217 | |
0cf03b49 JK |
2218 | if (current_language->la_language == language_cplus |
2219 | || current_language->la_language == language_java | |
2220 | || current_language->la_language == language_fortran) | |
2221 | { | |
2222 | /* NAME is already canonical. Drop any qualifiers as .gdb_index does | |
2223 | not contain any. */ | |
2224 | const char *paren = strchr (name, '('); | |
2225 | ||
2226 | if (paren) | |
2227 | { | |
2228 | char *dup; | |
2229 | ||
2230 | dup = xmalloc (paren - name + 1); | |
2231 | memcpy (dup, name, paren - name); | |
2232 | dup[paren - name] = 0; | |
2233 | ||
2234 | make_cleanup (xfree, dup); | |
2235 | name = dup; | |
2236 | } | |
2237 | } | |
2238 | ||
559a7a62 | 2239 | /* Index version 4 did not support case insensitive searches. But the |
feea76c2 | 2240 | indices for case insensitive languages are built in lowercase, therefore |
559a7a62 JK |
2241 | simulate our NAME being searched is also lowercased. */ |
2242 | hash = mapped_index_string_hash ((index->version == 4 | |
2243 | && case_sensitivity == case_sensitive_off | |
2244 | ? 5 : index->version), | |
2245 | name); | |
2246 | ||
3876f04e DE |
2247 | slot = hash & (index->symbol_table_slots - 1); |
2248 | step = ((hash * 17) & (index->symbol_table_slots - 1)) | 1; | |
559a7a62 | 2249 | cmp = (case_sensitivity == case_sensitive_on ? strcmp : strcasecmp); |
9291a0cd TT |
2250 | |
2251 | for (;;) | |
2252 | { | |
2253 | /* Convert a slot number to an offset into the table. */ | |
2254 | offset_type i = 2 * slot; | |
2255 | const char *str; | |
3876f04e | 2256 | if (index->symbol_table[i] == 0 && index->symbol_table[i + 1] == 0) |
0cf03b49 JK |
2257 | { |
2258 | do_cleanups (back_to); | |
2259 | return 0; | |
2260 | } | |
9291a0cd | 2261 | |
3876f04e | 2262 | str = index->constant_pool + MAYBE_SWAP (index->symbol_table[i]); |
559a7a62 | 2263 | if (!cmp (name, str)) |
9291a0cd TT |
2264 | { |
2265 | *vec_out = (offset_type *) (index->constant_pool | |
3876f04e | 2266 | + MAYBE_SWAP (index->symbol_table[i + 1])); |
0cf03b49 | 2267 | do_cleanups (back_to); |
9291a0cd TT |
2268 | return 1; |
2269 | } | |
2270 | ||
3876f04e | 2271 | slot = (slot + step) & (index->symbol_table_slots - 1); |
9291a0cd TT |
2272 | } |
2273 | } | |
2274 | ||
2275 | /* Read the index file. If everything went ok, initialize the "quick" | |
2276 | elements of all the CUs and return 1. Otherwise, return 0. */ | |
2fdf6df6 | 2277 | |
9291a0cd TT |
2278 | static int |
2279 | dwarf2_read_index (struct objfile *objfile) | |
2280 | { | |
9291a0cd TT |
2281 | char *addr; |
2282 | struct mapped_index *map; | |
b3b272e1 | 2283 | offset_type *metadata; |
ac0b195c KW |
2284 | const gdb_byte *cu_list; |
2285 | const gdb_byte *types_list = NULL; | |
2286 | offset_type version, cu_list_elements; | |
2287 | offset_type types_list_elements = 0; | |
1fd400ff | 2288 | int i; |
9291a0cd | 2289 | |
9e0ac564 | 2290 | if (dwarf2_section_empty_p (&dwarf2_per_objfile->gdb_index)) |
9291a0cd | 2291 | return 0; |
82430852 JK |
2292 | |
2293 | /* Older elfutils strip versions could keep the section in the main | |
2294 | executable while splitting it for the separate debug info file. */ | |
2295 | if ((bfd_get_file_flags (dwarf2_per_objfile->gdb_index.asection) | |
2296 | & SEC_HAS_CONTENTS) == 0) | |
2297 | return 0; | |
2298 | ||
9291a0cd TT |
2299 | dwarf2_read_section (objfile, &dwarf2_per_objfile->gdb_index); |
2300 | ||
2301 | addr = dwarf2_per_objfile->gdb_index.buffer; | |
2302 | /* Version check. */ | |
1fd400ff | 2303 | version = MAYBE_SWAP (*(offset_type *) addr); |
987d643c | 2304 | /* Versions earlier than 3 emitted every copy of a psymbol. This |
a6e293d1 | 2305 | causes the index to behave very poorly for certain requests. Version 3 |
831adc1f | 2306 | contained incomplete addrmap. So, it seems better to just ignore such |
481860b3 | 2307 | indices. */ |
831adc1f | 2308 | if (version < 4) |
481860b3 GB |
2309 | { |
2310 | static int warning_printed = 0; | |
2311 | if (!warning_printed) | |
2312 | { | |
2313 | warning (_("Skipping obsolete .gdb_index section in %s."), | |
2314 | objfile->name); | |
2315 | warning_printed = 1; | |
2316 | } | |
2317 | return 0; | |
2318 | } | |
2319 | /* Index version 4 uses a different hash function than index version | |
2320 | 5 and later. | |
2321 | ||
2322 | Versions earlier than 6 did not emit psymbols for inlined | |
2323 | functions. Using these files will cause GDB not to be able to | |
2324 | set breakpoints on inlined functions by name, so we ignore these | |
2325 | indices unless the --use-deprecated-index-sections command line | |
2326 | option was supplied. */ | |
2327 | if (version < 6 && !use_deprecated_index_sections) | |
2328 | { | |
2329 | static int warning_printed = 0; | |
2330 | if (!warning_printed) | |
2331 | { | |
2332 | warning (_("Skipping deprecated .gdb_index section in %s, pass " | |
2333 | "--use-deprecated-index-sections to use them anyway"), | |
2334 | objfile->name); | |
2335 | warning_printed = 1; | |
2336 | } | |
2337 | return 0; | |
2338 | } | |
2339 | /* Indexes with higher version than the one supported by GDB may be no | |
594e8718 | 2340 | longer backward compatible. */ |
481860b3 | 2341 | if (version > 6) |
594e8718 | 2342 | return 0; |
9291a0cd TT |
2343 | |
2344 | map = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct mapped_index); | |
559a7a62 | 2345 | map->version = version; |
b3b272e1 | 2346 | map->total_size = dwarf2_per_objfile->gdb_index.size; |
9291a0cd TT |
2347 | |
2348 | metadata = (offset_type *) (addr + sizeof (offset_type)); | |
1fd400ff TT |
2349 | |
2350 | i = 0; | |
2351 | cu_list = addr + MAYBE_SWAP (metadata[i]); | |
2352 | cu_list_elements = ((MAYBE_SWAP (metadata[i + 1]) - MAYBE_SWAP (metadata[i])) | |
9291a0cd | 2353 | / 8); |
1fd400ff TT |
2354 | ++i; |
2355 | ||
987d643c TT |
2356 | types_list = addr + MAYBE_SWAP (metadata[i]); |
2357 | types_list_elements = ((MAYBE_SWAP (metadata[i + 1]) | |
2358 | - MAYBE_SWAP (metadata[i])) | |
2359 | / 8); | |
2360 | ++i; | |
1fd400ff TT |
2361 | |
2362 | map->address_table = addr + MAYBE_SWAP (metadata[i]); | |
2363 | map->address_table_size = (MAYBE_SWAP (metadata[i + 1]) | |
2364 | - MAYBE_SWAP (metadata[i])); | |
2365 | ++i; | |
2366 | ||
3876f04e DE |
2367 | map->symbol_table = (offset_type *) (addr + MAYBE_SWAP (metadata[i])); |
2368 | map->symbol_table_slots = ((MAYBE_SWAP (metadata[i + 1]) | |
2369 | - MAYBE_SWAP (metadata[i])) | |
2370 | / (2 * sizeof (offset_type))); | |
1fd400ff | 2371 | ++i; |
9291a0cd | 2372 | |
1fd400ff TT |
2373 | map->constant_pool = addr + MAYBE_SWAP (metadata[i]); |
2374 | ||
0fefef59 DE |
2375 | /* Don't use the index if it's empty. */ |
2376 | if (map->symbol_table_slots == 0) | |
2377 | return 0; | |
2378 | ||
1fd400ff TT |
2379 | if (!create_cus_from_index (objfile, cu_list, cu_list_elements)) |
2380 | return 0; | |
2381 | ||
8b70b953 TT |
2382 | if (types_list_elements) |
2383 | { | |
2384 | struct dwarf2_section_info *section; | |
2385 | ||
2386 | /* We can only handle a single .debug_types when we have an | |
2387 | index. */ | |
2388 | if (VEC_length (dwarf2_section_info_def, dwarf2_per_objfile->types) != 1) | |
2389 | return 0; | |
2390 | ||
2391 | section = VEC_index (dwarf2_section_info_def, | |
2392 | dwarf2_per_objfile->types, 0); | |
2393 | ||
2394 | if (!create_signatured_type_table_from_index (objfile, section, | |
2395 | types_list, | |
2396 | types_list_elements)) | |
2397 | return 0; | |
2398 | } | |
9291a0cd TT |
2399 | |
2400 | create_addrmap_from_index (objfile, map); | |
2401 | ||
2402 | dwarf2_per_objfile->index_table = map; | |
2403 | dwarf2_per_objfile->using_index = 1; | |
7b9f3c50 DE |
2404 | dwarf2_per_objfile->quick_file_names_table = |
2405 | create_quick_file_names_table (dwarf2_per_objfile->n_comp_units); | |
9291a0cd TT |
2406 | |
2407 | return 1; | |
2408 | } | |
2409 | ||
2410 | /* A helper for the "quick" functions which sets the global | |
2411 | dwarf2_per_objfile according to OBJFILE. */ | |
2fdf6df6 | 2412 | |
9291a0cd TT |
2413 | static void |
2414 | dw2_setup (struct objfile *objfile) | |
2415 | { | |
2416 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); | |
2417 | gdb_assert (dwarf2_per_objfile); | |
2418 | } | |
2419 | ||
dee91e82 | 2420 | /* die_reader_func for dw2_get_file_names. */ |
2fdf6df6 | 2421 | |
dee91e82 DE |
2422 | static void |
2423 | dw2_get_file_names_reader (const struct die_reader_specs *reader, | |
2424 | gdb_byte *info_ptr, | |
2425 | struct die_info *comp_unit_die, | |
2426 | int has_children, | |
2427 | void *data) | |
9291a0cd | 2428 | { |
dee91e82 DE |
2429 | struct dwarf2_cu *cu = reader->cu; |
2430 | struct dwarf2_per_cu_data *this_cu = cu->per_cu; | |
2431 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
7b9f3c50 | 2432 | struct line_header *lh; |
9291a0cd | 2433 | struct attribute *attr; |
dee91e82 | 2434 | int i; |
9ff913ba | 2435 | unsigned int bytes_read; |
9291a0cd | 2436 | char *name, *comp_dir; |
7b9f3c50 DE |
2437 | void **slot; |
2438 | struct quick_file_names *qfn; | |
2439 | unsigned int line_offset; | |
9291a0cd | 2440 | |
7b9f3c50 DE |
2441 | lh = NULL; |
2442 | slot = NULL; | |
2443 | line_offset = 0; | |
dee91e82 DE |
2444 | |
2445 | attr = dwarf2_attr (comp_unit_die, DW_AT_stmt_list, cu); | |
9291a0cd TT |
2446 | if (attr) |
2447 | { | |
7b9f3c50 DE |
2448 | struct quick_file_names find_entry; |
2449 | ||
2450 | line_offset = DW_UNSND (attr); | |
2451 | ||
2452 | /* We may have already read in this line header (TU line header sharing). | |
2453 | If we have we're done. */ | |
2454 | find_entry.offset = line_offset; | |
2455 | slot = htab_find_slot (dwarf2_per_objfile->quick_file_names_table, | |
2456 | &find_entry, INSERT); | |
2457 | if (*slot != NULL) | |
2458 | { | |
7b9f3c50 | 2459 | this_cu->v.quick->file_names = *slot; |
dee91e82 | 2460 | return; |
7b9f3c50 DE |
2461 | } |
2462 | ||
3019eac3 | 2463 | lh = dwarf_decode_line_header (line_offset, cu); |
9291a0cd TT |
2464 | } |
2465 | if (lh == NULL) | |
2466 | { | |
7b9f3c50 | 2467 | this_cu->v.quick->no_file_data = 1; |
dee91e82 | 2468 | return; |
9291a0cd TT |
2469 | } |
2470 | ||
7b9f3c50 DE |
2471 | qfn = obstack_alloc (&objfile->objfile_obstack, sizeof (*qfn)); |
2472 | qfn->offset = line_offset; | |
2473 | gdb_assert (slot != NULL); | |
2474 | *slot = qfn; | |
9291a0cd | 2475 | |
dee91e82 | 2476 | find_file_and_directory (comp_unit_die, cu, &name, &comp_dir); |
9291a0cd | 2477 | |
7b9f3c50 DE |
2478 | qfn->num_file_names = lh->num_file_names; |
2479 | qfn->file_names = obstack_alloc (&objfile->objfile_obstack, | |
2480 | lh->num_file_names * sizeof (char *)); | |
9291a0cd | 2481 | for (i = 0; i < lh->num_file_names; ++i) |
7b9f3c50 DE |
2482 | qfn->file_names[i] = file_full_name (i + 1, lh, comp_dir); |
2483 | qfn->real_names = NULL; | |
9291a0cd | 2484 | |
7b9f3c50 | 2485 | free_line_header (lh); |
7b9f3c50 DE |
2486 | |
2487 | this_cu->v.quick->file_names = qfn; | |
dee91e82 DE |
2488 | } |
2489 | ||
2490 | /* A helper for the "quick" functions which attempts to read the line | |
2491 | table for THIS_CU. */ | |
2492 | ||
2493 | static struct quick_file_names * | |
2494 | dw2_get_file_names (struct objfile *objfile, | |
2495 | struct dwarf2_per_cu_data *this_cu) | |
2496 | { | |
2497 | if (this_cu->v.quick->file_names != NULL) | |
2498 | return this_cu->v.quick->file_names; | |
2499 | /* If we know there is no line data, no point in looking again. */ | |
2500 | if (this_cu->v.quick->no_file_data) | |
2501 | return NULL; | |
2502 | ||
3019eac3 DE |
2503 | /* If DWO files are in use, we can still find the DW_AT_stmt_list attribute |
2504 | in the stub for CUs, there's is no need to lookup the DWO file. | |
2505 | However, that's not the case for TUs where DW_AT_stmt_list lives in the | |
2506 | DWO file. */ | |
2507 | if (this_cu->is_debug_types) | |
fd820528 | 2508 | init_cutu_and_read_dies (this_cu, 0, 0, dw2_get_file_names_reader, NULL); |
3019eac3 DE |
2509 | else |
2510 | init_cutu_and_read_dies_simple (this_cu, dw2_get_file_names_reader, NULL); | |
dee91e82 DE |
2511 | |
2512 | if (this_cu->v.quick->no_file_data) | |
2513 | return NULL; | |
2514 | return this_cu->v.quick->file_names; | |
9291a0cd TT |
2515 | } |
2516 | ||
2517 | /* A helper for the "quick" functions which computes and caches the | |
7b9f3c50 | 2518 | real path for a given file name from the line table. */ |
2fdf6df6 | 2519 | |
9291a0cd | 2520 | static const char * |
7b9f3c50 DE |
2521 | dw2_get_real_path (struct objfile *objfile, |
2522 | struct quick_file_names *qfn, int index) | |
9291a0cd | 2523 | { |
7b9f3c50 DE |
2524 | if (qfn->real_names == NULL) |
2525 | qfn->real_names = OBSTACK_CALLOC (&objfile->objfile_obstack, | |
2526 | qfn->num_file_names, sizeof (char *)); | |
9291a0cd | 2527 | |
7b9f3c50 DE |
2528 | if (qfn->real_names[index] == NULL) |
2529 | qfn->real_names[index] = gdb_realpath (qfn->file_names[index]); | |
9291a0cd | 2530 | |
7b9f3c50 | 2531 | return qfn->real_names[index]; |
9291a0cd TT |
2532 | } |
2533 | ||
2534 | static struct symtab * | |
2535 | dw2_find_last_source_symtab (struct objfile *objfile) | |
2536 | { | |
2537 | int index; | |
ae2de4f8 | 2538 | |
9291a0cd TT |
2539 | dw2_setup (objfile); |
2540 | index = dwarf2_per_objfile->n_comp_units - 1; | |
a0f42c21 | 2541 | return dw2_instantiate_symtab (dw2_get_cu (index)); |
9291a0cd TT |
2542 | } |
2543 | ||
7b9f3c50 DE |
2544 | /* Traversal function for dw2_forget_cached_source_info. */ |
2545 | ||
2546 | static int | |
2547 | dw2_free_cached_file_names (void **slot, void *info) | |
9291a0cd | 2548 | { |
7b9f3c50 | 2549 | struct quick_file_names *file_data = (struct quick_file_names *) *slot; |
9291a0cd | 2550 | |
7b9f3c50 | 2551 | if (file_data->real_names) |
9291a0cd | 2552 | { |
7b9f3c50 | 2553 | int i; |
9291a0cd | 2554 | |
7b9f3c50 | 2555 | for (i = 0; i < file_data->num_file_names; ++i) |
9291a0cd | 2556 | { |
7b9f3c50 DE |
2557 | xfree ((void*) file_data->real_names[i]); |
2558 | file_data->real_names[i] = NULL; | |
9291a0cd TT |
2559 | } |
2560 | } | |
7b9f3c50 DE |
2561 | |
2562 | return 1; | |
2563 | } | |
2564 | ||
2565 | static void | |
2566 | dw2_forget_cached_source_info (struct objfile *objfile) | |
2567 | { | |
2568 | dw2_setup (objfile); | |
2569 | ||
2570 | htab_traverse_noresize (dwarf2_per_objfile->quick_file_names_table, | |
2571 | dw2_free_cached_file_names, NULL); | |
9291a0cd TT |
2572 | } |
2573 | ||
f8eba3c6 TT |
2574 | /* Helper function for dw2_map_symtabs_matching_filename that expands |
2575 | the symtabs and calls the iterator. */ | |
2576 | ||
2577 | static int | |
2578 | dw2_map_expand_apply (struct objfile *objfile, | |
2579 | struct dwarf2_per_cu_data *per_cu, | |
2580 | const char *name, | |
2581 | const char *full_path, const char *real_path, | |
2582 | int (*callback) (struct symtab *, void *), | |
2583 | void *data) | |
2584 | { | |
2585 | struct symtab *last_made = objfile->symtabs; | |
2586 | ||
2587 | /* Don't visit already-expanded CUs. */ | |
2588 | if (per_cu->v.quick->symtab) | |
2589 | return 0; | |
2590 | ||
2591 | /* This may expand more than one symtab, and we want to iterate over | |
2592 | all of them. */ | |
a0f42c21 | 2593 | dw2_instantiate_symtab (per_cu); |
f8eba3c6 TT |
2594 | |
2595 | return iterate_over_some_symtabs (name, full_path, real_path, callback, data, | |
2596 | objfile->symtabs, last_made); | |
2597 | } | |
2598 | ||
2599 | /* Implementation of the map_symtabs_matching_filename method. */ | |
2600 | ||
9291a0cd | 2601 | static int |
f8eba3c6 TT |
2602 | dw2_map_symtabs_matching_filename (struct objfile *objfile, const char *name, |
2603 | const char *full_path, const char *real_path, | |
2604 | int (*callback) (struct symtab *, void *), | |
2605 | void *data) | |
9291a0cd TT |
2606 | { |
2607 | int i; | |
c011a4f4 | 2608 | const char *name_basename = lbasename (name); |
4aac40c8 TT |
2609 | int name_len = strlen (name); |
2610 | int is_abs = IS_ABSOLUTE_PATH (name); | |
9291a0cd TT |
2611 | |
2612 | dw2_setup (objfile); | |
ae2de4f8 | 2613 | |
1fd400ff | 2614 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units |
d467dd73 | 2615 | + dwarf2_per_objfile->n_type_units); ++i) |
9291a0cd TT |
2616 | { |
2617 | int j; | |
e254ef6a | 2618 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
7b9f3c50 | 2619 | struct quick_file_names *file_data; |
9291a0cd | 2620 | |
3d7bb9d9 | 2621 | /* We only need to look at symtabs not already expanded. */ |
e254ef6a | 2622 | if (per_cu->v.quick->symtab) |
9291a0cd TT |
2623 | continue; |
2624 | ||
7b9f3c50 DE |
2625 | file_data = dw2_get_file_names (objfile, per_cu); |
2626 | if (file_data == NULL) | |
9291a0cd TT |
2627 | continue; |
2628 | ||
7b9f3c50 | 2629 | for (j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 2630 | { |
7b9f3c50 | 2631 | const char *this_name = file_data->file_names[j]; |
9291a0cd | 2632 | |
4aac40c8 TT |
2633 | if (FILENAME_CMP (name, this_name) == 0 |
2634 | || (!is_abs && compare_filenames_for_search (this_name, | |
2635 | name, name_len))) | |
9291a0cd | 2636 | { |
f8eba3c6 TT |
2637 | if (dw2_map_expand_apply (objfile, per_cu, |
2638 | name, full_path, real_path, | |
2639 | callback, data)) | |
2640 | return 1; | |
4aac40c8 | 2641 | } |
9291a0cd | 2642 | |
c011a4f4 DE |
2643 | /* Before we invoke realpath, which can get expensive when many |
2644 | files are involved, do a quick comparison of the basenames. */ | |
2645 | if (! basenames_may_differ | |
2646 | && FILENAME_CMP (lbasename (this_name), name_basename) != 0) | |
2647 | continue; | |
2648 | ||
9291a0cd TT |
2649 | if (full_path != NULL) |
2650 | { | |
7b9f3c50 DE |
2651 | const char *this_real_name = dw2_get_real_path (objfile, |
2652 | file_data, j); | |
9291a0cd | 2653 | |
7b9f3c50 | 2654 | if (this_real_name != NULL |
4aac40c8 TT |
2655 | && (FILENAME_CMP (full_path, this_real_name) == 0 |
2656 | || (!is_abs | |
2657 | && compare_filenames_for_search (this_real_name, | |
2658 | name, name_len)))) | |
9291a0cd | 2659 | { |
f8eba3c6 TT |
2660 | if (dw2_map_expand_apply (objfile, per_cu, |
2661 | name, full_path, real_path, | |
2662 | callback, data)) | |
2663 | return 1; | |
9291a0cd TT |
2664 | } |
2665 | } | |
2666 | ||
2667 | if (real_path != NULL) | |
2668 | { | |
7b9f3c50 DE |
2669 | const char *this_real_name = dw2_get_real_path (objfile, |
2670 | file_data, j); | |
9291a0cd | 2671 | |
7b9f3c50 | 2672 | if (this_real_name != NULL |
4aac40c8 TT |
2673 | && (FILENAME_CMP (real_path, this_real_name) == 0 |
2674 | || (!is_abs | |
2675 | && compare_filenames_for_search (this_real_name, | |
2676 | name, name_len)))) | |
9291a0cd | 2677 | { |
f8eba3c6 TT |
2678 | if (dw2_map_expand_apply (objfile, per_cu, |
2679 | name, full_path, real_path, | |
2680 | callback, data)) | |
2681 | return 1; | |
9291a0cd TT |
2682 | } |
2683 | } | |
2684 | } | |
2685 | } | |
2686 | ||
9291a0cd TT |
2687 | return 0; |
2688 | } | |
2689 | ||
2690 | static struct symtab * | |
2691 | dw2_lookup_symbol (struct objfile *objfile, int block_index, | |
2692 | const char *name, domain_enum domain) | |
2693 | { | |
774b6a14 | 2694 | /* We do all the work in the pre_expand_symtabs_matching hook |
9291a0cd TT |
2695 | instead. */ |
2696 | return NULL; | |
2697 | } | |
2698 | ||
2699 | /* A helper function that expands all symtabs that hold an object | |
2700 | named NAME. */ | |
2fdf6df6 | 2701 | |
9291a0cd TT |
2702 | static void |
2703 | dw2_do_expand_symtabs_matching (struct objfile *objfile, const char *name) | |
2704 | { | |
2705 | dw2_setup (objfile); | |
2706 | ||
ae2de4f8 | 2707 | /* index_table is NULL if OBJF_READNOW. */ |
9291a0cd TT |
2708 | if (dwarf2_per_objfile->index_table) |
2709 | { | |
2710 | offset_type *vec; | |
2711 | ||
2712 | if (find_slot_in_mapped_hash (dwarf2_per_objfile->index_table, | |
2713 | name, &vec)) | |
2714 | { | |
2715 | offset_type i, len = MAYBE_SWAP (*vec); | |
2716 | for (i = 0; i < len; ++i) | |
2717 | { | |
2718 | offset_type cu_index = MAYBE_SWAP (vec[i + 1]); | |
e254ef6a | 2719 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (cu_index); |
1fd400ff | 2720 | |
a0f42c21 | 2721 | dw2_instantiate_symtab (per_cu); |
9291a0cd TT |
2722 | } |
2723 | } | |
2724 | } | |
2725 | } | |
2726 | ||
774b6a14 TT |
2727 | static void |
2728 | dw2_pre_expand_symtabs_matching (struct objfile *objfile, | |
8903c50d | 2729 | enum block_enum block_kind, const char *name, |
774b6a14 | 2730 | domain_enum domain) |
9291a0cd | 2731 | { |
774b6a14 | 2732 | dw2_do_expand_symtabs_matching (objfile, name); |
9291a0cd TT |
2733 | } |
2734 | ||
2735 | static void | |
2736 | dw2_print_stats (struct objfile *objfile) | |
2737 | { | |
2738 | int i, count; | |
2739 | ||
2740 | dw2_setup (objfile); | |
2741 | count = 0; | |
1fd400ff | 2742 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units |
d467dd73 | 2743 | + dwarf2_per_objfile->n_type_units); ++i) |
9291a0cd | 2744 | { |
e254ef6a | 2745 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
9291a0cd | 2746 | |
e254ef6a | 2747 | if (!per_cu->v.quick->symtab) |
9291a0cd TT |
2748 | ++count; |
2749 | } | |
2750 | printf_filtered (_(" Number of unread CUs: %d\n"), count); | |
2751 | } | |
2752 | ||
2753 | static void | |
2754 | dw2_dump (struct objfile *objfile) | |
2755 | { | |
2756 | /* Nothing worth printing. */ | |
2757 | } | |
2758 | ||
2759 | static void | |
2760 | dw2_relocate (struct objfile *objfile, struct section_offsets *new_offsets, | |
2761 | struct section_offsets *delta) | |
2762 | { | |
2763 | /* There's nothing to relocate here. */ | |
2764 | } | |
2765 | ||
2766 | static void | |
2767 | dw2_expand_symtabs_for_function (struct objfile *objfile, | |
2768 | const char *func_name) | |
2769 | { | |
2770 | dw2_do_expand_symtabs_matching (objfile, func_name); | |
2771 | } | |
2772 | ||
2773 | static void | |
2774 | dw2_expand_all_symtabs (struct objfile *objfile) | |
2775 | { | |
2776 | int i; | |
2777 | ||
2778 | dw2_setup (objfile); | |
1fd400ff TT |
2779 | |
2780 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units | |
d467dd73 | 2781 | + dwarf2_per_objfile->n_type_units); ++i) |
9291a0cd | 2782 | { |
e254ef6a | 2783 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
9291a0cd | 2784 | |
a0f42c21 | 2785 | dw2_instantiate_symtab (per_cu); |
9291a0cd TT |
2786 | } |
2787 | } | |
2788 | ||
2789 | static void | |
2790 | dw2_expand_symtabs_with_filename (struct objfile *objfile, | |
2791 | const char *filename) | |
2792 | { | |
2793 | int i; | |
2794 | ||
2795 | dw2_setup (objfile); | |
d4637a04 DE |
2796 | |
2797 | /* We don't need to consider type units here. | |
2798 | This is only called for examining code, e.g. expand_line_sal. | |
2799 | There can be an order of magnitude (or more) more type units | |
2800 | than comp units, and we avoid them if we can. */ | |
2801 | ||
2802 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) | |
9291a0cd TT |
2803 | { |
2804 | int j; | |
e254ef6a | 2805 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
7b9f3c50 | 2806 | struct quick_file_names *file_data; |
9291a0cd | 2807 | |
3d7bb9d9 | 2808 | /* We only need to look at symtabs not already expanded. */ |
e254ef6a | 2809 | if (per_cu->v.quick->symtab) |
9291a0cd TT |
2810 | continue; |
2811 | ||
7b9f3c50 DE |
2812 | file_data = dw2_get_file_names (objfile, per_cu); |
2813 | if (file_data == NULL) | |
9291a0cd TT |
2814 | continue; |
2815 | ||
7b9f3c50 | 2816 | for (j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 2817 | { |
7b9f3c50 | 2818 | const char *this_name = file_data->file_names[j]; |
1ef75ecc | 2819 | if (FILENAME_CMP (this_name, filename) == 0) |
9291a0cd | 2820 | { |
a0f42c21 | 2821 | dw2_instantiate_symtab (per_cu); |
9291a0cd TT |
2822 | break; |
2823 | } | |
2824 | } | |
2825 | } | |
2826 | } | |
2827 | ||
dd786858 | 2828 | static const char * |
9291a0cd TT |
2829 | dw2_find_symbol_file (struct objfile *objfile, const char *name) |
2830 | { | |
e254ef6a | 2831 | struct dwarf2_per_cu_data *per_cu; |
9291a0cd | 2832 | offset_type *vec; |
7b9f3c50 | 2833 | struct quick_file_names *file_data; |
9291a0cd TT |
2834 | |
2835 | dw2_setup (objfile); | |
2836 | ||
ae2de4f8 | 2837 | /* index_table is NULL if OBJF_READNOW. */ |
9291a0cd | 2838 | if (!dwarf2_per_objfile->index_table) |
96408a79 SA |
2839 | { |
2840 | struct symtab *s; | |
2841 | ||
2842 | ALL_OBJFILE_SYMTABS (objfile, s) | |
2843 | if (s->primary) | |
2844 | { | |
2845 | struct blockvector *bv = BLOCKVECTOR (s); | |
2846 | const struct block *block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); | |
2847 | struct symbol *sym = lookup_block_symbol (block, name, VAR_DOMAIN); | |
2848 | ||
2849 | if (sym) | |
2850 | return sym->symtab->filename; | |
2851 | } | |
2852 | return NULL; | |
2853 | } | |
9291a0cd TT |
2854 | |
2855 | if (!find_slot_in_mapped_hash (dwarf2_per_objfile->index_table, | |
2856 | name, &vec)) | |
2857 | return NULL; | |
2858 | ||
2859 | /* Note that this just looks at the very first one named NAME -- but | |
2860 | actually we are looking for a function. find_main_filename | |
2861 | should be rewritten so that it doesn't require a custom hook. It | |
2862 | could just use the ordinary symbol tables. */ | |
2863 | /* vec[0] is the length, which must always be >0. */ | |
e254ef6a | 2864 | per_cu = dw2_get_cu (MAYBE_SWAP (vec[1])); |
9291a0cd | 2865 | |
7b9f3c50 | 2866 | file_data = dw2_get_file_names (objfile, per_cu); |
943cb756 DE |
2867 | if (file_data == NULL |
2868 | || file_data->num_file_names == 0) | |
9291a0cd TT |
2869 | return NULL; |
2870 | ||
7b9f3c50 | 2871 | return file_data->file_names[file_data->num_file_names - 1]; |
9291a0cd TT |
2872 | } |
2873 | ||
2874 | static void | |
40658b94 PH |
2875 | dw2_map_matching_symbols (const char * name, domain_enum namespace, |
2876 | struct objfile *objfile, int global, | |
2877 | int (*callback) (struct block *, | |
2878 | struct symbol *, void *), | |
2edb89d3 JK |
2879 | void *data, symbol_compare_ftype *match, |
2880 | symbol_compare_ftype *ordered_compare) | |
9291a0cd | 2881 | { |
40658b94 | 2882 | /* Currently unimplemented; used for Ada. The function can be called if the |
a9e6a4bb JK |
2883 | current language is Ada for a non-Ada objfile using GNU index. As Ada |
2884 | does not look for non-Ada symbols this function should just return. */ | |
9291a0cd TT |
2885 | } |
2886 | ||
2887 | static void | |
f8eba3c6 TT |
2888 | dw2_expand_symtabs_matching |
2889 | (struct objfile *objfile, | |
2890 | int (*file_matcher) (const char *, void *), | |
e078317b | 2891 | int (*name_matcher) (const char *, void *), |
f8eba3c6 TT |
2892 | enum search_domain kind, |
2893 | void *data) | |
9291a0cd TT |
2894 | { |
2895 | int i; | |
2896 | offset_type iter; | |
4b5246aa | 2897 | struct mapped_index *index; |
9291a0cd TT |
2898 | |
2899 | dw2_setup (objfile); | |
ae2de4f8 DE |
2900 | |
2901 | /* index_table is NULL if OBJF_READNOW. */ | |
9291a0cd TT |
2902 | if (!dwarf2_per_objfile->index_table) |
2903 | return; | |
4b5246aa | 2904 | index = dwarf2_per_objfile->index_table; |
9291a0cd | 2905 | |
7b08b9eb | 2906 | if (file_matcher != NULL) |
24c79950 TT |
2907 | { |
2908 | struct cleanup *cleanup; | |
2909 | htab_t visited_found, visited_not_found; | |
2910 | ||
2911 | visited_found = htab_create_alloc (10, | |
2912 | htab_hash_pointer, htab_eq_pointer, | |
2913 | NULL, xcalloc, xfree); | |
2914 | cleanup = make_cleanup_htab_delete (visited_found); | |
2915 | visited_not_found = htab_create_alloc (10, | |
2916 | htab_hash_pointer, htab_eq_pointer, | |
2917 | NULL, xcalloc, xfree); | |
2918 | make_cleanup_htab_delete (visited_not_found); | |
2919 | ||
2920 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units | |
2921 | + dwarf2_per_objfile->n_type_units); ++i) | |
2922 | { | |
2923 | int j; | |
2924 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); | |
2925 | struct quick_file_names *file_data; | |
2926 | void **slot; | |
7b08b9eb | 2927 | |
24c79950 | 2928 | per_cu->v.quick->mark = 0; |
3d7bb9d9 | 2929 | |
24c79950 TT |
2930 | /* We only need to look at symtabs not already expanded. */ |
2931 | if (per_cu->v.quick->symtab) | |
2932 | continue; | |
7b08b9eb | 2933 | |
24c79950 TT |
2934 | file_data = dw2_get_file_names (objfile, per_cu); |
2935 | if (file_data == NULL) | |
2936 | continue; | |
7b08b9eb | 2937 | |
24c79950 TT |
2938 | if (htab_find (visited_not_found, file_data) != NULL) |
2939 | continue; | |
2940 | else if (htab_find (visited_found, file_data) != NULL) | |
2941 | { | |
2942 | per_cu->v.quick->mark = 1; | |
2943 | continue; | |
2944 | } | |
2945 | ||
2946 | for (j = 0; j < file_data->num_file_names; ++j) | |
2947 | { | |
2948 | if (file_matcher (file_data->file_names[j], data)) | |
2949 | { | |
2950 | per_cu->v.quick->mark = 1; | |
2951 | break; | |
2952 | } | |
2953 | } | |
2954 | ||
2955 | slot = htab_find_slot (per_cu->v.quick->mark | |
2956 | ? visited_found | |
2957 | : visited_not_found, | |
2958 | file_data, INSERT); | |
2959 | *slot = file_data; | |
2960 | } | |
2961 | ||
2962 | do_cleanups (cleanup); | |
2963 | } | |
9291a0cd | 2964 | |
3876f04e | 2965 | for (iter = 0; iter < index->symbol_table_slots; ++iter) |
9291a0cd TT |
2966 | { |
2967 | offset_type idx = 2 * iter; | |
2968 | const char *name; | |
2969 | offset_type *vec, vec_len, vec_idx; | |
2970 | ||
3876f04e | 2971 | if (index->symbol_table[idx] == 0 && index->symbol_table[idx + 1] == 0) |
9291a0cd TT |
2972 | continue; |
2973 | ||
3876f04e | 2974 | name = index->constant_pool + MAYBE_SWAP (index->symbol_table[idx]); |
9291a0cd | 2975 | |
e078317b | 2976 | if (! (*name_matcher) (name, data)) |
9291a0cd TT |
2977 | continue; |
2978 | ||
2979 | /* The name was matched, now expand corresponding CUs that were | |
2980 | marked. */ | |
4b5246aa | 2981 | vec = (offset_type *) (index->constant_pool |
3876f04e | 2982 | + MAYBE_SWAP (index->symbol_table[idx + 1])); |
9291a0cd TT |
2983 | vec_len = MAYBE_SWAP (vec[0]); |
2984 | for (vec_idx = 0; vec_idx < vec_len; ++vec_idx) | |
2985 | { | |
e254ef6a | 2986 | struct dwarf2_per_cu_data *per_cu; |
1fd400ff | 2987 | |
e254ef6a | 2988 | per_cu = dw2_get_cu (MAYBE_SWAP (vec[vec_idx + 1])); |
7b08b9eb | 2989 | if (file_matcher == NULL || per_cu->v.quick->mark) |
a0f42c21 | 2990 | dw2_instantiate_symtab (per_cu); |
9291a0cd TT |
2991 | } |
2992 | } | |
2993 | } | |
2994 | ||
2995 | static struct symtab * | |
2996 | dw2_find_pc_sect_symtab (struct objfile *objfile, | |
2997 | struct minimal_symbol *msymbol, | |
2998 | CORE_ADDR pc, | |
2999 | struct obj_section *section, | |
3000 | int warn_if_readin) | |
3001 | { | |
3002 | struct dwarf2_per_cu_data *data; | |
3003 | ||
3004 | dw2_setup (objfile); | |
3005 | ||
3006 | if (!objfile->psymtabs_addrmap) | |
3007 | return NULL; | |
3008 | ||
3009 | data = addrmap_find (objfile->psymtabs_addrmap, pc); | |
3010 | if (!data) | |
3011 | return NULL; | |
3012 | ||
3013 | if (warn_if_readin && data->v.quick->symtab) | |
abebb8b0 | 3014 | warning (_("(Internal error: pc %s in read in CU, but not in symtab.)"), |
9291a0cd TT |
3015 | paddress (get_objfile_arch (objfile), pc)); |
3016 | ||
a0f42c21 | 3017 | return dw2_instantiate_symtab (data); |
9291a0cd TT |
3018 | } |
3019 | ||
9291a0cd | 3020 | static void |
44b13c5a | 3021 | dw2_map_symbol_filenames (struct objfile *objfile, symbol_filename_ftype *fun, |
74e2f255 | 3022 | void *data, int need_fullname) |
9291a0cd TT |
3023 | { |
3024 | int i; | |
24c79950 TT |
3025 | struct cleanup *cleanup; |
3026 | htab_t visited = htab_create_alloc (10, htab_hash_pointer, htab_eq_pointer, | |
3027 | NULL, xcalloc, xfree); | |
9291a0cd | 3028 | |
24c79950 | 3029 | cleanup = make_cleanup_htab_delete (visited); |
9291a0cd | 3030 | dw2_setup (objfile); |
ae2de4f8 | 3031 | |
24c79950 TT |
3032 | /* We can ignore file names coming from already-expanded CUs. */ |
3033 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units | |
3034 | + dwarf2_per_objfile->n_type_units); ++i) | |
3035 | { | |
3036 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); | |
3037 | ||
3038 | if (per_cu->v.quick->symtab) | |
3039 | { | |
3040 | void **slot = htab_find_slot (visited, per_cu->v.quick->file_names, | |
3041 | INSERT); | |
3042 | ||
3043 | *slot = per_cu->v.quick->file_names; | |
3044 | } | |
3045 | } | |
3046 | ||
1fd400ff | 3047 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units |
d467dd73 | 3048 | + dwarf2_per_objfile->n_type_units); ++i) |
9291a0cd TT |
3049 | { |
3050 | int j; | |
e254ef6a | 3051 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
7b9f3c50 | 3052 | struct quick_file_names *file_data; |
24c79950 | 3053 | void **slot; |
9291a0cd | 3054 | |
3d7bb9d9 | 3055 | /* We only need to look at symtabs not already expanded. */ |
e254ef6a | 3056 | if (per_cu->v.quick->symtab) |
9291a0cd TT |
3057 | continue; |
3058 | ||
7b9f3c50 DE |
3059 | file_data = dw2_get_file_names (objfile, per_cu); |
3060 | if (file_data == NULL) | |
9291a0cd TT |
3061 | continue; |
3062 | ||
24c79950 TT |
3063 | slot = htab_find_slot (visited, file_data, INSERT); |
3064 | if (*slot) | |
3065 | { | |
3066 | /* Already visited. */ | |
3067 | continue; | |
3068 | } | |
3069 | *slot = file_data; | |
3070 | ||
7b9f3c50 | 3071 | for (j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 3072 | { |
74e2f255 DE |
3073 | const char *this_real_name; |
3074 | ||
3075 | if (need_fullname) | |
3076 | this_real_name = dw2_get_real_path (objfile, file_data, j); | |
3077 | else | |
3078 | this_real_name = NULL; | |
7b9f3c50 | 3079 | (*fun) (file_data->file_names[j], this_real_name, data); |
9291a0cd TT |
3080 | } |
3081 | } | |
24c79950 TT |
3082 | |
3083 | do_cleanups (cleanup); | |
9291a0cd TT |
3084 | } |
3085 | ||
3086 | static int | |
3087 | dw2_has_symbols (struct objfile *objfile) | |
3088 | { | |
3089 | return 1; | |
3090 | } | |
3091 | ||
3092 | const struct quick_symbol_functions dwarf2_gdb_index_functions = | |
3093 | { | |
3094 | dw2_has_symbols, | |
3095 | dw2_find_last_source_symtab, | |
3096 | dw2_forget_cached_source_info, | |
f8eba3c6 | 3097 | dw2_map_symtabs_matching_filename, |
9291a0cd | 3098 | dw2_lookup_symbol, |
774b6a14 | 3099 | dw2_pre_expand_symtabs_matching, |
9291a0cd TT |
3100 | dw2_print_stats, |
3101 | dw2_dump, | |
3102 | dw2_relocate, | |
3103 | dw2_expand_symtabs_for_function, | |
3104 | dw2_expand_all_symtabs, | |
3105 | dw2_expand_symtabs_with_filename, | |
3106 | dw2_find_symbol_file, | |
40658b94 | 3107 | dw2_map_matching_symbols, |
9291a0cd TT |
3108 | dw2_expand_symtabs_matching, |
3109 | dw2_find_pc_sect_symtab, | |
9291a0cd TT |
3110 | dw2_map_symbol_filenames |
3111 | }; | |
3112 | ||
3113 | /* Initialize for reading DWARF for this objfile. Return 0 if this | |
3114 | file will use psymtabs, or 1 if using the GNU index. */ | |
3115 | ||
3116 | int | |
3117 | dwarf2_initialize_objfile (struct objfile *objfile) | |
3118 | { | |
3119 | /* If we're about to read full symbols, don't bother with the | |
3120 | indices. In this case we also don't care if some other debug | |
3121 | format is making psymtabs, because they are all about to be | |
3122 | expanded anyway. */ | |
3123 | if ((objfile->flags & OBJF_READNOW)) | |
3124 | { | |
3125 | int i; | |
3126 | ||
3127 | dwarf2_per_objfile->using_index = 1; | |
3128 | create_all_comp_units (objfile); | |
0e50663e | 3129 | create_all_type_units (objfile); |
7b9f3c50 DE |
3130 | dwarf2_per_objfile->quick_file_names_table = |
3131 | create_quick_file_names_table (dwarf2_per_objfile->n_comp_units); | |
9291a0cd | 3132 | |
1fd400ff | 3133 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units |
d467dd73 | 3134 | + dwarf2_per_objfile->n_type_units); ++i) |
9291a0cd | 3135 | { |
e254ef6a | 3136 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
9291a0cd | 3137 | |
e254ef6a DE |
3138 | per_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
3139 | struct dwarf2_per_cu_quick_data); | |
9291a0cd TT |
3140 | } |
3141 | ||
3142 | /* Return 1 so that gdb sees the "quick" functions. However, | |
3143 | these functions will be no-ops because we will have expanded | |
3144 | all symtabs. */ | |
3145 | return 1; | |
3146 | } | |
3147 | ||
3148 | if (dwarf2_read_index (objfile)) | |
3149 | return 1; | |
3150 | ||
9291a0cd TT |
3151 | return 0; |
3152 | } | |
3153 | ||
3154 | \f | |
3155 | ||
dce234bc PP |
3156 | /* Build a partial symbol table. */ |
3157 | ||
3158 | void | |
f29dff0a | 3159 | dwarf2_build_psymtabs (struct objfile *objfile) |
dce234bc | 3160 | { |
f29dff0a | 3161 | if (objfile->global_psymbols.size == 0 && objfile->static_psymbols.size == 0) |
c906108c SS |
3162 | { |
3163 | init_psymbol_list (objfile, 1024); | |
3164 | } | |
3165 | ||
d146bf1e | 3166 | dwarf2_build_psymtabs_hard (objfile); |
c906108c | 3167 | } |
c906108c | 3168 | |
45452591 DE |
3169 | /* Return TRUE if OFFSET is within CU_HEADER. */ |
3170 | ||
3171 | static inline int | |
b64f50a1 | 3172 | offset_in_cu_p (const struct comp_unit_head *cu_header, sect_offset offset) |
45452591 | 3173 | { |
b64f50a1 JK |
3174 | sect_offset bottom = { cu_header->offset.sect_off }; |
3175 | sect_offset top = { (cu_header->offset.sect_off + cu_header->length | |
3176 | + cu_header->initial_length_size) }; | |
9a619af0 | 3177 | |
b64f50a1 | 3178 | return (offset.sect_off >= bottom.sect_off && offset.sect_off < top.sect_off); |
45452591 DE |
3179 | } |
3180 | ||
93311388 DE |
3181 | /* Read in the comp unit header information from the debug_info at info_ptr. |
3182 | NOTE: This leaves members offset, first_die_offset to be filled in | |
3183 | by the caller. */ | |
107d2387 | 3184 | |
fe1b8b76 | 3185 | static gdb_byte * |
107d2387 | 3186 | read_comp_unit_head (struct comp_unit_head *cu_header, |
fe1b8b76 | 3187 | gdb_byte *info_ptr, bfd *abfd) |
107d2387 AC |
3188 | { |
3189 | int signed_addr; | |
891d2f0b | 3190 | unsigned int bytes_read; |
c764a876 DE |
3191 | |
3192 | cu_header->length = read_initial_length (abfd, info_ptr, &bytes_read); | |
3193 | cu_header->initial_length_size = bytes_read; | |
3194 | cu_header->offset_size = (bytes_read == 4) ? 4 : 8; | |
613e1657 | 3195 | info_ptr += bytes_read; |
107d2387 AC |
3196 | cu_header->version = read_2_bytes (abfd, info_ptr); |
3197 | info_ptr += 2; | |
b64f50a1 JK |
3198 | cu_header->abbrev_offset.sect_off = read_offset (abfd, info_ptr, cu_header, |
3199 | &bytes_read); | |
613e1657 | 3200 | info_ptr += bytes_read; |
107d2387 AC |
3201 | cu_header->addr_size = read_1_byte (abfd, info_ptr); |
3202 | info_ptr += 1; | |
3203 | signed_addr = bfd_get_sign_extend_vma (abfd); | |
3204 | if (signed_addr < 0) | |
8e65ff28 | 3205 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 3206 | _("read_comp_unit_head: dwarf from non elf file")); |
107d2387 | 3207 | cu_header->signed_addr_p = signed_addr; |
c764a876 | 3208 | |
107d2387 AC |
3209 | return info_ptr; |
3210 | } | |
3211 | ||
9ff913ba DE |
3212 | /* Subroutine of read_and_check_comp_unit_head and |
3213 | read_and_check_type_unit_head to simplify them. | |
3214 | Perform various error checking on the header. */ | |
3215 | ||
3216 | static void | |
3217 | error_check_comp_unit_head (struct comp_unit_head *header, | |
3218 | struct dwarf2_section_info *section) | |
3219 | { | |
3220 | bfd *abfd = section->asection->owner; | |
3221 | const char *filename = bfd_get_filename (abfd); | |
3222 | ||
3223 | if (header->version != 2 && header->version != 3 && header->version != 4) | |
3224 | error (_("Dwarf Error: wrong version in compilation unit header " | |
3225 | "(is %d, should be 2, 3, or 4) [in module %s]"), header->version, | |
3226 | filename); | |
3227 | ||
b64f50a1 | 3228 | if (header->abbrev_offset.sect_off |
9ff913ba DE |
3229 | >= dwarf2_section_size (dwarf2_per_objfile->objfile, |
3230 | &dwarf2_per_objfile->abbrev)) | |
3231 | error (_("Dwarf Error: bad offset (0x%lx) in compilation unit header " | |
3232 | "(offset 0x%lx + 6) [in module %s]"), | |
b64f50a1 | 3233 | (long) header->abbrev_offset.sect_off, (long) header->offset.sect_off, |
9ff913ba DE |
3234 | filename); |
3235 | ||
3236 | /* Cast to unsigned long to use 64-bit arithmetic when possible to | |
3237 | avoid potential 32-bit overflow. */ | |
b64f50a1 | 3238 | if (((unsigned long) header->offset.sect_off |
9ff913ba DE |
3239 | + header->length + header->initial_length_size) |
3240 | > section->size) | |
3241 | error (_("Dwarf Error: bad length (0x%lx) in compilation unit header " | |
3242 | "(offset 0x%lx + 0) [in module %s]"), | |
b64f50a1 | 3243 | (long) header->length, (long) header->offset.sect_off, |
9ff913ba DE |
3244 | filename); |
3245 | } | |
3246 | ||
3247 | /* Read in a CU/TU header and perform some basic error checking. | |
3248 | The contents of the header are stored in HEADER. | |
3249 | The result is a pointer to the start of the first DIE. */ | |
adabb602 | 3250 | |
fe1b8b76 | 3251 | static gdb_byte * |
9ff913ba DE |
3252 | read_and_check_comp_unit_head (struct comp_unit_head *header, |
3253 | struct dwarf2_section_info *section, | |
3254 | gdb_byte *info_ptr, | |
3255 | int is_debug_types_section) | |
72bf9492 | 3256 | { |
fe1b8b76 | 3257 | gdb_byte *beg_of_comp_unit = info_ptr; |
9ff913ba | 3258 | bfd *abfd = section->asection->owner; |
72bf9492 | 3259 | |
b64f50a1 | 3260 | header->offset.sect_off = beg_of_comp_unit - section->buffer; |
adabb602 | 3261 | |
72bf9492 DJ |
3262 | info_ptr = read_comp_unit_head (header, info_ptr, abfd); |
3263 | ||
460c1c54 CC |
3264 | /* If we're reading a type unit, skip over the signature and |
3265 | type_offset fields. */ | |
b0df02fd | 3266 | if (is_debug_types_section) |
460c1c54 CC |
3267 | info_ptr += 8 /*signature*/ + header->offset_size; |
3268 | ||
b64f50a1 | 3269 | header->first_die_offset.cu_off = info_ptr - beg_of_comp_unit; |
adabb602 | 3270 | |
9ff913ba | 3271 | error_check_comp_unit_head (header, section); |
72bf9492 DJ |
3272 | |
3273 | return info_ptr; | |
3274 | } | |
3275 | ||
348e048f DE |
3276 | /* Read in the types comp unit header information from .debug_types entry at |
3277 | types_ptr. The result is a pointer to one past the end of the header. */ | |
3278 | ||
3279 | static gdb_byte * | |
9ff913ba DE |
3280 | read_and_check_type_unit_head (struct comp_unit_head *header, |
3281 | struct dwarf2_section_info *section, | |
3282 | gdb_byte *info_ptr, | |
dee91e82 DE |
3283 | ULONGEST *signature, |
3284 | cu_offset *type_offset_in_tu) | |
348e048f | 3285 | { |
9ff913ba DE |
3286 | gdb_byte *beg_of_comp_unit = info_ptr; |
3287 | bfd *abfd = section->asection->owner; | |
348e048f | 3288 | |
b64f50a1 | 3289 | header->offset.sect_off = beg_of_comp_unit - section->buffer; |
348e048f | 3290 | |
9ff913ba | 3291 | info_ptr = read_comp_unit_head (header, info_ptr, abfd); |
348e048f | 3292 | |
9ff913ba DE |
3293 | /* If we're reading a type unit, skip over the signature and |
3294 | type_offset fields. */ | |
3295 | if (signature != NULL) | |
3296 | *signature = read_8_bytes (abfd, info_ptr); | |
3297 | info_ptr += 8; | |
dee91e82 DE |
3298 | if (type_offset_in_tu != NULL) |
3299 | type_offset_in_tu->cu_off = read_offset_1 (abfd, info_ptr, | |
3300 | header->offset_size); | |
9ff913ba DE |
3301 | info_ptr += header->offset_size; |
3302 | ||
b64f50a1 | 3303 | header->first_die_offset.cu_off = info_ptr - beg_of_comp_unit; |
348e048f | 3304 | |
9ff913ba DE |
3305 | error_check_comp_unit_head (header, section); |
3306 | ||
3307 | return info_ptr; | |
348e048f DE |
3308 | } |
3309 | ||
aaa75496 JB |
3310 | /* Allocate a new partial symtab for file named NAME and mark this new |
3311 | partial symtab as being an include of PST. */ | |
3312 | ||
3313 | static void | |
3314 | dwarf2_create_include_psymtab (char *name, struct partial_symtab *pst, | |
3315 | struct objfile *objfile) | |
3316 | { | |
3317 | struct partial_symtab *subpst = allocate_psymtab (name, objfile); | |
3318 | ||
3319 | subpst->section_offsets = pst->section_offsets; | |
3320 | subpst->textlow = 0; | |
3321 | subpst->texthigh = 0; | |
3322 | ||
3323 | subpst->dependencies = (struct partial_symtab **) | |
3324 | obstack_alloc (&objfile->objfile_obstack, | |
3325 | sizeof (struct partial_symtab *)); | |
3326 | subpst->dependencies[0] = pst; | |
3327 | subpst->number_of_dependencies = 1; | |
3328 | ||
3329 | subpst->globals_offset = 0; | |
3330 | subpst->n_global_syms = 0; | |
3331 | subpst->statics_offset = 0; | |
3332 | subpst->n_static_syms = 0; | |
3333 | subpst->symtab = NULL; | |
3334 | subpst->read_symtab = pst->read_symtab; | |
3335 | subpst->readin = 0; | |
3336 | ||
3337 | /* No private part is necessary for include psymtabs. This property | |
3338 | can be used to differentiate between such include psymtabs and | |
10b3939b | 3339 | the regular ones. */ |
58a9656e | 3340 | subpst->read_symtab_private = NULL; |
aaa75496 JB |
3341 | } |
3342 | ||
3343 | /* Read the Line Number Program data and extract the list of files | |
3344 | included by the source file represented by PST. Build an include | |
d85a05f0 | 3345 | partial symtab for each of these included files. */ |
aaa75496 JB |
3346 | |
3347 | static void | |
3348 | dwarf2_build_include_psymtabs (struct dwarf2_cu *cu, | |
dee91e82 DE |
3349 | struct die_info *die, |
3350 | struct partial_symtab *pst) | |
aaa75496 | 3351 | { |
d85a05f0 DJ |
3352 | struct line_header *lh = NULL; |
3353 | struct attribute *attr; | |
aaa75496 | 3354 | |
d85a05f0 DJ |
3355 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
3356 | if (attr) | |
3019eac3 | 3357 | lh = dwarf_decode_line_header (DW_UNSND (attr), cu); |
aaa75496 JB |
3358 | if (lh == NULL) |
3359 | return; /* No linetable, so no includes. */ | |
3360 | ||
c6da4cef | 3361 | /* NOTE: pst->dirname is DW_AT_comp_dir (if present). */ |
f3f5162e | 3362 | dwarf_decode_lines (lh, pst->dirname, cu, pst, 1); |
aaa75496 JB |
3363 | |
3364 | free_line_header (lh); | |
3365 | } | |
3366 | ||
348e048f | 3367 | static hashval_t |
52dc124a | 3368 | hash_signatured_type (const void *item) |
348e048f | 3369 | { |
52dc124a | 3370 | const struct signatured_type *sig_type = item; |
9a619af0 | 3371 | |
348e048f | 3372 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
52dc124a | 3373 | return sig_type->signature; |
348e048f DE |
3374 | } |
3375 | ||
3376 | static int | |
52dc124a | 3377 | eq_signatured_type (const void *item_lhs, const void *item_rhs) |
348e048f DE |
3378 | { |
3379 | const struct signatured_type *lhs = item_lhs; | |
3380 | const struct signatured_type *rhs = item_rhs; | |
9a619af0 | 3381 | |
348e048f DE |
3382 | return lhs->signature == rhs->signature; |
3383 | } | |
3384 | ||
1fd400ff TT |
3385 | /* Allocate a hash table for signatured types. */ |
3386 | ||
3387 | static htab_t | |
673bfd45 | 3388 | allocate_signatured_type_table (struct objfile *objfile) |
1fd400ff TT |
3389 | { |
3390 | return htab_create_alloc_ex (41, | |
52dc124a DE |
3391 | hash_signatured_type, |
3392 | eq_signatured_type, | |
1fd400ff TT |
3393 | NULL, |
3394 | &objfile->objfile_obstack, | |
3395 | hashtab_obstack_allocate, | |
3396 | dummy_obstack_deallocate); | |
3397 | } | |
3398 | ||
d467dd73 | 3399 | /* A helper function to add a signatured type CU to a table. */ |
1fd400ff TT |
3400 | |
3401 | static int | |
d467dd73 | 3402 | add_signatured_type_cu_to_table (void **slot, void *datum) |
1fd400ff TT |
3403 | { |
3404 | struct signatured_type *sigt = *slot; | |
3405 | struct dwarf2_per_cu_data ***datap = datum; | |
3406 | ||
3407 | **datap = &sigt->per_cu; | |
3408 | ++*datap; | |
3409 | ||
3410 | return 1; | |
3411 | } | |
3412 | ||
3019eac3 DE |
3413 | /* Create the hash table of all entries in the .debug_types section. |
3414 | DWO_FILE is a pointer to the DWO file for .debug_types.dwo, NULL otherwise. | |
3415 | The result is a pointer to the hash table or NULL if there are | |
3416 | no types. */ | |
348e048f | 3417 | |
3019eac3 DE |
3418 | static htab_t |
3419 | create_debug_types_hash_table (struct dwo_file *dwo_file, | |
3420 | VEC (dwarf2_section_info_def) *types) | |
348e048f | 3421 | { |
3019eac3 | 3422 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8b70b953 | 3423 | htab_t types_htab = NULL; |
8b70b953 TT |
3424 | int ix; |
3425 | struct dwarf2_section_info *section; | |
348e048f | 3426 | |
3019eac3 DE |
3427 | if (VEC_empty (dwarf2_section_info_def, types)) |
3428 | return NULL; | |
348e048f | 3429 | |
8b70b953 | 3430 | for (ix = 0; |
3019eac3 | 3431 | VEC_iterate (dwarf2_section_info_def, types, ix, section); |
8b70b953 TT |
3432 | ++ix) |
3433 | { | |
3019eac3 | 3434 | bfd *abfd; |
8b70b953 | 3435 | gdb_byte *info_ptr, *end_ptr; |
348e048f | 3436 | |
8b70b953 TT |
3437 | dwarf2_read_section (objfile, section); |
3438 | info_ptr = section->buffer; | |
348e048f | 3439 | |
8b70b953 TT |
3440 | if (info_ptr == NULL) |
3441 | continue; | |
348e048f | 3442 | |
3019eac3 DE |
3443 | /* We can't set abfd until now because the section may be empty or |
3444 | not present, in which case section->asection will be NULL. */ | |
3445 | abfd = section->asection->owner; | |
3446 | ||
8b70b953 | 3447 | if (types_htab == NULL) |
3019eac3 DE |
3448 | { |
3449 | if (dwo_file) | |
3450 | types_htab = allocate_dwo_unit_table (objfile); | |
3451 | else | |
3452 | types_htab = allocate_signatured_type_table (objfile); | |
3453 | } | |
348e048f | 3454 | |
8b70b953 | 3455 | if (dwarf2_die_debug) |
dee91e82 DE |
3456 | fprintf_unfiltered (gdb_stdlog, "Reading signatured types for %s:\n", |
3457 | bfd_get_filename (abfd)); | |
3458 | ||
3459 | /* We don't use init_cutu_and_read_dies_simple, or some such, here | |
3460 | because we don't need to read any dies: the signature is in the | |
3461 | header. */ | |
8b70b953 TT |
3462 | |
3463 | end_ptr = info_ptr + section->size; | |
3464 | while (info_ptr < end_ptr) | |
3465 | { | |
b64f50a1 | 3466 | sect_offset offset; |
3019eac3 | 3467 | cu_offset type_offset_in_tu; |
8b70b953 | 3468 | ULONGEST signature; |
52dc124a | 3469 | struct signatured_type *sig_type; |
3019eac3 | 3470 | struct dwo_unit *dwo_tu; |
8b70b953 TT |
3471 | void **slot; |
3472 | gdb_byte *ptr = info_ptr; | |
9ff913ba | 3473 | struct comp_unit_head header; |
dee91e82 | 3474 | unsigned int length; |
348e048f | 3475 | |
b64f50a1 | 3476 | offset.sect_off = ptr - section->buffer; |
348e048f | 3477 | |
8b70b953 | 3478 | /* We need to read the type's signature in order to build the hash |
9ff913ba | 3479 | table, but we don't need anything else just yet. */ |
348e048f | 3480 | |
9ff913ba | 3481 | ptr = read_and_check_type_unit_head (&header, section, ptr, |
3019eac3 | 3482 | &signature, &type_offset_in_tu); |
6caca83c | 3483 | |
dee91e82 DE |
3484 | length = header.initial_length_size + header.length; |
3485 | ||
6caca83c | 3486 | /* Skip dummy type units. */ |
dee91e82 DE |
3487 | if (ptr >= info_ptr + length |
3488 | || peek_abbrev_code (abfd, ptr) == 0) | |
6caca83c | 3489 | { |
dee91e82 | 3490 | info_ptr += header.initial_length_size + header.length; |
6caca83c CC |
3491 | continue; |
3492 | } | |
8b70b953 | 3493 | |
3019eac3 DE |
3494 | if (dwo_file) |
3495 | { | |
3496 | sig_type = NULL; | |
3497 | dwo_tu = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
3498 | struct dwo_unit); | |
3499 | dwo_tu->dwo_file = dwo_file; | |
3500 | dwo_tu->signature = signature; | |
3501 | dwo_tu->type_offset_in_tu = type_offset_in_tu; | |
3502 | dwo_tu->info_or_types_section = section; | |
3503 | dwo_tu->offset = offset; | |
3504 | dwo_tu->length = length; | |
3505 | } | |
3506 | else | |
3507 | { | |
3508 | /* N.B.: type_offset is not usable if this type uses a DWO file. | |
3509 | The real type_offset is in the DWO file. */ | |
3510 | dwo_tu = NULL; | |
3511 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
3512 | struct signatured_type); | |
3513 | sig_type->signature = signature; | |
3514 | sig_type->type_offset_in_tu = type_offset_in_tu; | |
3515 | sig_type->per_cu.objfile = objfile; | |
3516 | sig_type->per_cu.is_debug_types = 1; | |
3517 | sig_type->per_cu.info_or_types_section = section; | |
3518 | sig_type->per_cu.offset = offset; | |
3519 | sig_type->per_cu.length = length; | |
3520 | } | |
8b70b953 | 3521 | |
3019eac3 DE |
3522 | slot = htab_find_slot (types_htab, |
3523 | dwo_file ? (void*) dwo_tu : (void *) sig_type, | |
3524 | INSERT); | |
8b70b953 TT |
3525 | gdb_assert (slot != NULL); |
3526 | if (*slot != NULL) | |
3527 | { | |
3019eac3 DE |
3528 | sect_offset dup_offset; |
3529 | ||
3530 | if (dwo_file) | |
3531 | { | |
3532 | const struct dwo_unit *dup_tu = *slot; | |
3533 | ||
3534 | dup_offset = dup_tu->offset; | |
3535 | } | |
3536 | else | |
3537 | { | |
3538 | const struct signatured_type *dup_tu = *slot; | |
3539 | ||
3540 | dup_offset = dup_tu->per_cu.offset; | |
3541 | } | |
b3c8eb43 | 3542 | |
8b70b953 TT |
3543 | complaint (&symfile_complaints, |
3544 | _("debug type entry at offset 0x%x is duplicate to the " | |
3545 | "entry at offset 0x%x, signature 0x%s"), | |
3019eac3 | 3546 | offset.sect_off, dup_offset.sect_off, |
8b70b953 | 3547 | phex (signature, sizeof (signature))); |
8b70b953 | 3548 | } |
3019eac3 | 3549 | *slot = dwo_file ? (void *) dwo_tu : (void *) sig_type; |
348e048f | 3550 | |
8b70b953 TT |
3551 | if (dwarf2_die_debug) |
3552 | fprintf_unfiltered (gdb_stdlog, " offset 0x%x, signature 0x%s\n", | |
b64f50a1 JK |
3553 | offset.sect_off, |
3554 | phex (signature, sizeof (signature))); | |
348e048f | 3555 | |
dee91e82 | 3556 | info_ptr += length; |
8b70b953 | 3557 | } |
348e048f DE |
3558 | } |
3559 | ||
3019eac3 DE |
3560 | return types_htab; |
3561 | } | |
3562 | ||
3563 | /* Create the hash table of all entries in the .debug_types section, | |
3564 | and initialize all_type_units. | |
3565 | The result is zero if there is an error (e.g. missing .debug_types section), | |
3566 | otherwise non-zero. */ | |
3567 | ||
3568 | static int | |
3569 | create_all_type_units (struct objfile *objfile) | |
3570 | { | |
3571 | htab_t types_htab; | |
3572 | struct dwarf2_per_cu_data **iter; | |
3573 | ||
3574 | types_htab = create_debug_types_hash_table (NULL, dwarf2_per_objfile->types); | |
3575 | if (types_htab == NULL) | |
3576 | { | |
3577 | dwarf2_per_objfile->signatured_types = NULL; | |
3578 | return 0; | |
3579 | } | |
3580 | ||
348e048f DE |
3581 | dwarf2_per_objfile->signatured_types = types_htab; |
3582 | ||
d467dd73 DE |
3583 | dwarf2_per_objfile->n_type_units = htab_elements (types_htab); |
3584 | dwarf2_per_objfile->all_type_units | |
1fd400ff | 3585 | = obstack_alloc (&objfile->objfile_obstack, |
d467dd73 | 3586 | dwarf2_per_objfile->n_type_units |
1fd400ff | 3587 | * sizeof (struct dwarf2_per_cu_data *)); |
d467dd73 DE |
3588 | iter = &dwarf2_per_objfile->all_type_units[0]; |
3589 | htab_traverse_noresize (types_htab, add_signatured_type_cu_to_table, &iter); | |
3590 | gdb_assert (iter - &dwarf2_per_objfile->all_type_units[0] | |
3591 | == dwarf2_per_objfile->n_type_units); | |
1fd400ff | 3592 | |
348e048f DE |
3593 | return 1; |
3594 | } | |
3595 | ||
380bca97 | 3596 | /* Lookup a signature based type for DW_FORM_ref_sig8. |
e319fa28 | 3597 | Returns NULL if signature SIG is not present in the table. */ |
348e048f DE |
3598 | |
3599 | static struct signatured_type * | |
e319fa28 | 3600 | lookup_signatured_type (ULONGEST sig) |
348e048f DE |
3601 | { |
3602 | struct signatured_type find_entry, *entry; | |
3603 | ||
3604 | if (dwarf2_per_objfile->signatured_types == NULL) | |
3605 | { | |
3606 | complaint (&symfile_complaints, | |
55f1336d | 3607 | _("missing `.debug_types' section for DW_FORM_ref_sig8 die")); |
dcc07052 | 3608 | return NULL; |
348e048f DE |
3609 | } |
3610 | ||
3611 | find_entry.signature = sig; | |
3612 | entry = htab_find (dwarf2_per_objfile->signatured_types, &find_entry); | |
3613 | return entry; | |
3614 | } | |
3615 | ||
d85a05f0 DJ |
3616 | /* Initialize a die_reader_specs struct from a dwarf2_cu struct. */ |
3617 | ||
3618 | static void | |
3619 | init_cu_die_reader (struct die_reader_specs *reader, | |
dee91e82 | 3620 | struct dwarf2_cu *cu, |
3019eac3 DE |
3621 | struct dwarf2_section_info *section, |
3622 | struct dwo_file *dwo_file) | |
d85a05f0 | 3623 | { |
fceca515 | 3624 | gdb_assert (section->readin && section->buffer != NULL); |
dee91e82 | 3625 | reader->abfd = section->asection->owner; |
d85a05f0 | 3626 | reader->cu = cu; |
3019eac3 | 3627 | reader->dwo_file = dwo_file; |
dee91e82 DE |
3628 | reader->die_section = section; |
3629 | reader->buffer = section->buffer; | |
d85a05f0 DJ |
3630 | } |
3631 | ||
3632 | /* Find the base address of the compilation unit for range lists and | |
3633 | location lists. It will normally be specified by DW_AT_low_pc. | |
3634 | In DWARF-3 draft 4, the base address could be overridden by | |
3635 | DW_AT_entry_pc. It's been removed, but GCC still uses this for | |
3636 | compilation units with discontinuous ranges. */ | |
3637 | ||
3638 | static void | |
3639 | dwarf2_find_base_address (struct die_info *die, struct dwarf2_cu *cu) | |
3640 | { | |
3641 | struct attribute *attr; | |
3642 | ||
3643 | cu->base_known = 0; | |
3644 | cu->base_address = 0; | |
3645 | ||
3646 | attr = dwarf2_attr (die, DW_AT_entry_pc, cu); | |
3647 | if (attr) | |
3648 | { | |
3649 | cu->base_address = DW_ADDR (attr); | |
3650 | cu->base_known = 1; | |
3651 | } | |
3652 | else | |
3653 | { | |
3654 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
3655 | if (attr) | |
3656 | { | |
3657 | cu->base_address = DW_ADDR (attr); | |
3658 | cu->base_known = 1; | |
3659 | } | |
3660 | } | |
3661 | } | |
3662 | ||
fd820528 | 3663 | /* Initialize a CU (or TU) and read its DIEs. |
3019eac3 | 3664 | If the CU defers to a DWO file, read the DWO file as well. |
dee91e82 DE |
3665 | |
3666 | If USE_EXISTING_CU is non-zero, and THIS_CU->cu is non-NULL, then use it. | |
3667 | Otherwise, a new CU is allocated with xmalloc. | |
3668 | ||
3669 | If KEEP is non-zero, then if we allocated a dwarf2_cu we add it to | |
3670 | read_in_chain. Otherwise the dwarf2_cu data is freed at the end. | |
3671 | ||
3672 | WARNING: If THIS_CU is a "dummy CU" (used as filler by the incremental | |
fd820528 | 3673 | linker) then DIE_READER_FUNC will not get called. */ |
aaa75496 | 3674 | |
70221824 | 3675 | static void |
fd820528 DE |
3676 | init_cutu_and_read_dies (struct dwarf2_per_cu_data *this_cu, |
3677 | int use_existing_cu, int keep, | |
3678 | die_reader_func_ftype *die_reader_func, | |
3679 | void *data) | |
c906108c | 3680 | { |
dee91e82 | 3681 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3019eac3 DE |
3682 | struct dwarf2_section_info *section = this_cu->info_or_types_section; |
3683 | bfd *abfd = section->asection->owner; | |
dee91e82 DE |
3684 | struct dwarf2_cu *cu; |
3685 | gdb_byte *begin_info_ptr, *info_ptr; | |
3686 | struct die_reader_specs reader; | |
d85a05f0 | 3687 | struct die_info *comp_unit_die; |
dee91e82 | 3688 | int has_children; |
d85a05f0 | 3689 | struct attribute *attr; |
dee91e82 DE |
3690 | struct cleanup *cleanups, *free_cu_cleanup = NULL; |
3691 | struct signatured_type *sig_type = NULL; | |
c906108c | 3692 | |
dee91e82 DE |
3693 | if (use_existing_cu) |
3694 | gdb_assert (keep); | |
23745b47 | 3695 | |
dee91e82 DE |
3696 | cleanups = make_cleanup (null_cleanup, NULL); |
3697 | ||
3698 | /* This is cheap if the section is already read in. */ | |
3699 | dwarf2_read_section (objfile, section); | |
3700 | ||
3701 | begin_info_ptr = info_ptr = section->buffer + this_cu->offset.sect_off; | |
3702 | ||
3703 | if (use_existing_cu && this_cu->cu != NULL) | |
3704 | { | |
3705 | cu = this_cu->cu; | |
3706 | info_ptr += cu->header.first_die_offset.cu_off; | |
3707 | } | |
3708 | else | |
3709 | { | |
3710 | /* If !use_existing_cu, this_cu->cu must be NULL. */ | |
3711 | gdb_assert (this_cu->cu == NULL); | |
3712 | ||
3713 | cu = xmalloc (sizeof (*cu)); | |
3714 | init_one_comp_unit (cu, this_cu); | |
3715 | ||
3716 | /* If an error occurs while loading, release our storage. */ | |
3717 | free_cu_cleanup = make_cleanup (free_heap_comp_unit, cu); | |
3718 | ||
3019eac3 | 3719 | if (this_cu->is_debug_types) |
dee91e82 DE |
3720 | { |
3721 | ULONGEST signature; | |
3722 | ||
3723 | info_ptr = read_and_check_type_unit_head (&cu->header, | |
3724 | section, info_ptr, | |
3725 | &signature, NULL); | |
3726 | ||
3727 | /* There's no way to get from PER_CU to its containing | |
3728 | struct signatured_type. | |
3729 | But we have the signature so we can use that. */ | |
3730 | sig_type = lookup_signatured_type (signature); | |
3731 | /* We've already scanned all the signatured types, | |
3732 | this must succeed. */ | |
3733 | gdb_assert (sig_type != NULL); | |
3734 | gdb_assert (&sig_type->per_cu == this_cu); | |
3735 | gdb_assert (this_cu->offset.sect_off == cu->header.offset.sect_off); | |
3736 | ||
3737 | /* LENGTH has not been set yet for type units. */ | |
3738 | this_cu->length = cu->header.length + cu->header.initial_length_size; | |
3019eac3 DE |
3739 | |
3740 | /* Establish the type offset that can be used to lookup the type. */ | |
3741 | sig_type->type_offset_in_section.sect_off = | |
3742 | this_cu->offset.sect_off + sig_type->type_offset_in_tu.cu_off; | |
dee91e82 DE |
3743 | } |
3744 | else | |
3745 | { | |
3746 | info_ptr = read_and_check_comp_unit_head (&cu->header, | |
3747 | section, info_ptr, 0); | |
3748 | ||
3749 | gdb_assert (this_cu->offset.sect_off == cu->header.offset.sect_off); | |
3750 | gdb_assert (this_cu->length | |
3751 | == cu->header.length + cu->header.initial_length_size); | |
3752 | } | |
3753 | } | |
10b3939b | 3754 | |
6caca83c | 3755 | /* Skip dummy compilation units. */ |
dee91e82 | 3756 | if (info_ptr >= begin_info_ptr + this_cu->length |
6caca83c CC |
3757 | || peek_abbrev_code (abfd, info_ptr) == 0) |
3758 | { | |
dee91e82 | 3759 | do_cleanups (cleanups); |
21b2bd31 | 3760 | return; |
6caca83c CC |
3761 | } |
3762 | ||
93311388 | 3763 | /* Read the abbrevs for this compilation unit into a table. */ |
dee91e82 DE |
3764 | if (cu->dwarf2_abbrevs == NULL) |
3765 | { | |
3766 | dwarf2_read_abbrevs (cu, &dwarf2_per_objfile->abbrev); | |
3767 | make_cleanup (dwarf2_free_abbrev_table, cu); | |
3768 | } | |
af703f96 | 3769 | |
dee91e82 | 3770 | /* Read the top level CU/TU die. */ |
3019eac3 | 3771 | init_cu_die_reader (&reader, cu, section, NULL); |
dee91e82 | 3772 | info_ptr = read_full_die (&reader, &comp_unit_die, info_ptr, &has_children); |
93311388 | 3773 | |
3019eac3 DE |
3774 | /* If we have a DWO stub, process it and then read in the DWO file. |
3775 | Note that if USE_EXISTING_OK != 0, and THIS_CU->cu already contains | |
3776 | a DWO CU, that this test will fail. */ | |
3777 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_name, cu); | |
3778 | if (attr) | |
3779 | { | |
3780 | char *dwo_name = DW_STRING (attr); | |
3781 | const char *comp_dir; | |
3782 | struct dwo_unit *dwo_unit; | |
3783 | ULONGEST signature; /* Or dwo_id. */ | |
3784 | struct attribute *stmt_list, *low_pc, *high_pc, *ranges; | |
3785 | int i,num_extra_attrs; | |
3786 | ||
3787 | if (has_children) | |
3788 | error (_("Dwarf Error: compilation unit with DW_AT_GNU_dwo_name" | |
3789 | " has children (offset 0x%x) [in module %s]"), | |
3790 | this_cu->offset.sect_off, bfd_get_filename (abfd)); | |
3791 | ||
3792 | /* These attributes aren't processed until later: | |
3793 | DW_AT_stmt_list, DW_AT_low_pc, DW_AT_high_pc, DW_AT_ranges. | |
3794 | However, the attribute is found in the stub which we won't have later. | |
3795 | In order to not impose this complication on the rest of the code, | |
3796 | we read them here and copy them to the DWO CU/TU die. */ | |
3797 | stmt_list = low_pc = high_pc = ranges = NULL; | |
3798 | ||
3799 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
3800 | DWO file. */ | |
3801 | if (! this_cu->is_debug_types) | |
3802 | stmt_list = dwarf2_attr (comp_unit_die, DW_AT_stmt_list, cu); | |
3803 | low_pc = dwarf2_attr (comp_unit_die, DW_AT_low_pc, cu); | |
3804 | high_pc = dwarf2_attr (comp_unit_die, DW_AT_high_pc, cu); | |
3805 | ranges = dwarf2_attr (comp_unit_die, DW_AT_ranges, cu); | |
3806 | ||
3807 | /* There should be a DW_AT_addr_base attribute here (if needed). | |
3808 | We need the value before we can process DW_FORM_GNU_addr_index. */ | |
3809 | cu->addr_base = 0; | |
3810 | cu->have_addr_base = 0; | |
3811 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_addr_base, cu); | |
3812 | if (attr) | |
3813 | { | |
3814 | cu->addr_base = DW_UNSND (attr); | |
3815 | cu->have_addr_base = 1; | |
3816 | } | |
3817 | ||
3818 | if (this_cu->is_debug_types) | |
3819 | { | |
3820 | gdb_assert (sig_type != NULL); | |
3821 | signature = sig_type->signature; | |
3822 | } | |
3823 | else | |
3824 | { | |
3825 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_id, cu); | |
3826 | if (! attr) | |
3827 | error (_("Dwarf Error: missing dwo_id [in module %s]"), | |
3828 | dwo_name); | |
3829 | signature = DW_UNSND (attr); | |
3830 | } | |
3831 | ||
3832 | /* We may need the comp_dir in order to find the DWO file. */ | |
3833 | comp_dir = NULL; | |
3834 | attr = dwarf2_attr (comp_unit_die, DW_AT_comp_dir, cu); | |
3835 | if (attr) | |
3836 | comp_dir = DW_STRING (attr); | |
3837 | ||
3838 | if (this_cu->is_debug_types) | |
3839 | dwo_unit = lookup_dwo_type_unit (sig_type, dwo_name, comp_dir); | |
3840 | else | |
3841 | dwo_unit = lookup_dwo_comp_unit (this_cu, dwo_name, comp_dir, | |
3842 | signature); | |
3843 | ||
3844 | if (dwo_unit == NULL) | |
3845 | { | |
3846 | error (_("Dwarf Error: CU at offset 0x%x references unknown DWO" | |
3847 | " with ID %s [in module %s]"), | |
3848 | this_cu->offset.sect_off, | |
3849 | phex (signature, sizeof (signature)), | |
3850 | objfile->name); | |
3851 | } | |
3852 | ||
3853 | /* Set up for reading the DWO CU/TU. */ | |
3854 | cu->dwo_unit = dwo_unit; | |
3855 | section = dwo_unit->info_or_types_section; | |
3856 | begin_info_ptr = info_ptr = section->buffer + dwo_unit->offset.sect_off; | |
3857 | init_cu_die_reader (&reader, cu, section, dwo_unit->dwo_file); | |
3858 | ||
3859 | if (this_cu->is_debug_types) | |
3860 | { | |
3861 | ULONGEST signature; | |
3862 | ||
3863 | info_ptr = read_and_check_type_unit_head (&cu->header, | |
3864 | section, info_ptr, | |
3865 | &signature, NULL); | |
3866 | gdb_assert (sig_type->signature == signature); | |
3867 | gdb_assert (dwo_unit->offset.sect_off == cu->header.offset.sect_off); | |
3868 | gdb_assert (dwo_unit->length | |
3869 | == cu->header.length + cu->header.initial_length_size); | |
3870 | ||
3871 | /* Establish the type offset that can be used to lookup the type. | |
3872 | For DWO files, we don't know it until now. */ | |
3873 | sig_type->type_offset_in_section.sect_off = | |
3874 | dwo_unit->offset.sect_off + dwo_unit->type_offset_in_tu.cu_off; | |
3875 | } | |
3876 | else | |
3877 | { | |
3878 | info_ptr = read_and_check_comp_unit_head (&cu->header, | |
3879 | section, info_ptr, 0); | |
3880 | gdb_assert (dwo_unit->offset.sect_off == cu->header.offset.sect_off); | |
3881 | gdb_assert (dwo_unit->length | |
3882 | == cu->header.length + cu->header.initial_length_size); | |
3883 | } | |
3884 | ||
3885 | /* Discard the original CU's abbrev table, and read the DWO's. */ | |
3886 | dwarf2_free_abbrev_table (cu); | |
3887 | dwarf2_read_abbrevs (cu, &dwo_unit->dwo_file->sections.abbrev); | |
3888 | ||
3889 | /* Read in the die, but leave space to copy over the attributes | |
3890 | from the stub. This has the benefit of simplifying the rest of | |
3891 | the code - all the real work is done here. */ | |
3892 | num_extra_attrs = ((stmt_list != NULL) | |
3893 | + (low_pc != NULL) | |
3894 | + (high_pc != NULL) | |
3895 | + (ranges != NULL)); | |
3896 | info_ptr = read_full_die_1 (&reader, &comp_unit_die, info_ptr, | |
3897 | &has_children, num_extra_attrs); | |
3898 | ||
3899 | /* Copy over the attributes from the stub to the DWO die. */ | |
3900 | i = comp_unit_die->num_attrs; | |
3901 | if (stmt_list != NULL) | |
3902 | comp_unit_die->attrs[i++] = *stmt_list; | |
3903 | if (low_pc != NULL) | |
3904 | comp_unit_die->attrs[i++] = *low_pc; | |
3905 | if (high_pc != NULL) | |
3906 | comp_unit_die->attrs[i++] = *high_pc; | |
3907 | if (ranges != NULL) | |
3908 | comp_unit_die->attrs[i++] = *ranges; | |
3909 | comp_unit_die->num_attrs += num_extra_attrs; | |
3910 | ||
3911 | /* Skip dummy compilation units. */ | |
3912 | if (info_ptr >= begin_info_ptr + dwo_unit->length | |
3913 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
3914 | { | |
3915 | do_cleanups (cleanups); | |
3916 | return; | |
3917 | } | |
3918 | } | |
3919 | ||
dee91e82 DE |
3920 | die_reader_func (&reader, info_ptr, comp_unit_die, has_children, data); |
3921 | ||
3922 | if (free_cu_cleanup != NULL) | |
348e048f | 3923 | { |
dee91e82 DE |
3924 | if (keep) |
3925 | { | |
3926 | /* We've successfully allocated this compilation unit. Let our | |
3927 | caller clean it up when finished with it. */ | |
3928 | discard_cleanups (free_cu_cleanup); | |
3929 | ||
3930 | /* We can only discard free_cu_cleanup and all subsequent cleanups. | |
3931 | So we have to manually free the abbrev table. */ | |
3932 | dwarf2_free_abbrev_table (cu); | |
3933 | ||
3934 | /* Link this CU into read_in_chain. */ | |
3935 | this_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
3936 | dwarf2_per_objfile->read_in_chain = this_cu; | |
3937 | } | |
3938 | else | |
3939 | do_cleanups (free_cu_cleanup); | |
348e048f | 3940 | } |
dee91e82 DE |
3941 | |
3942 | do_cleanups (cleanups); | |
3943 | } | |
3944 | ||
3019eac3 DE |
3945 | /* Read CU/TU THIS_CU in section SECTION, |
3946 | but do not follow DW_AT_GNU_dwo_name if present. | |
3947 | DWO_FILE, if non-NULL, is the DWO file to read (the caller is assumed to | |
3948 | have already done the lookup to find the DWO file). | |
dee91e82 DE |
3949 | |
3950 | The caller is required to fill in THIS_CU->section, THIS_CU->offset, and | |
3019eac3 | 3951 | THIS_CU->is_debug_types, but nothing else. |
dee91e82 DE |
3952 | |
3953 | We fill in THIS_CU->length. | |
3954 | ||
3955 | WARNING: If THIS_CU is a "dummy CU" (used as filler by the incremental | |
3956 | linker) then DIE_READER_FUNC will not get called. | |
3957 | ||
3958 | THIS_CU->cu is always freed when done. | |
3019eac3 DE |
3959 | This is done in order to not leave THIS_CU->cu in a state where we have |
3960 | to care whether it refers to the "main" CU or the DWO CU. */ | |
dee91e82 DE |
3961 | |
3962 | static void | |
3963 | init_cutu_and_read_dies_no_follow (struct dwarf2_per_cu_data *this_cu, | |
3964 | struct dwarf2_section_info *abbrev_section, | |
3019eac3 | 3965 | struct dwo_file *dwo_file, |
dee91e82 DE |
3966 | die_reader_func_ftype *die_reader_func, |
3967 | void *data) | |
3968 | { | |
3969 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
3019eac3 DE |
3970 | struct dwarf2_section_info *section = this_cu->info_or_types_section; |
3971 | bfd *abfd = section->asection->owner; | |
dee91e82 DE |
3972 | struct dwarf2_cu cu; |
3973 | gdb_byte *begin_info_ptr, *info_ptr; | |
3974 | struct die_reader_specs reader; | |
3975 | struct cleanup *cleanups; | |
3976 | struct die_info *comp_unit_die; | |
3977 | int has_children; | |
3978 | ||
3979 | gdb_assert (this_cu->cu == NULL); | |
3980 | ||
dee91e82 DE |
3981 | /* This is cheap if the section is already read in. */ |
3982 | dwarf2_read_section (objfile, section); | |
3983 | ||
3984 | init_one_comp_unit (&cu, this_cu); | |
3985 | ||
3986 | cleanups = make_cleanup (free_stack_comp_unit, &cu); | |
3987 | ||
3988 | begin_info_ptr = info_ptr = section->buffer + this_cu->offset.sect_off; | |
3989 | info_ptr = read_and_check_comp_unit_head (&cu.header, section, info_ptr, | |
3019eac3 | 3990 | this_cu->is_debug_types); |
dee91e82 DE |
3991 | |
3992 | this_cu->length = cu.header.length + cu.header.initial_length_size; | |
3993 | ||
3994 | /* Skip dummy compilation units. */ | |
3995 | if (info_ptr >= begin_info_ptr + this_cu->length | |
3996 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
c906108c | 3997 | { |
dee91e82 | 3998 | do_cleanups (cleanups); |
21b2bd31 | 3999 | return; |
93311388 | 4000 | } |
72bf9492 | 4001 | |
dee91e82 DE |
4002 | dwarf2_read_abbrevs (&cu, abbrev_section); |
4003 | make_cleanup (dwarf2_free_abbrev_table, &cu); | |
4004 | ||
3019eac3 | 4005 | init_cu_die_reader (&reader, &cu, section, dwo_file); |
dee91e82 DE |
4006 | info_ptr = read_full_die (&reader, &comp_unit_die, info_ptr, &has_children); |
4007 | ||
4008 | die_reader_func (&reader, info_ptr, comp_unit_die, has_children, data); | |
4009 | ||
4010 | do_cleanups (cleanups); | |
4011 | } | |
4012 | ||
3019eac3 DE |
4013 | /* Read a CU/TU, except that this does not look for DW_AT_GNU_dwo_name and |
4014 | does not lookup the specified DWO file. | |
4015 | This cannot be used to read DWO files. | |
dee91e82 DE |
4016 | |
4017 | THIS_CU->cu is always freed when done. | |
3019eac3 DE |
4018 | This is done in order to not leave THIS_CU->cu in a state where we have |
4019 | to care whether it refers to the "main" CU or the DWO CU. | |
4020 | We can revisit this if the data shows there's a performance issue. */ | |
dee91e82 DE |
4021 | |
4022 | static void | |
4023 | init_cutu_and_read_dies_simple (struct dwarf2_per_cu_data *this_cu, | |
4024 | die_reader_func_ftype *die_reader_func, | |
4025 | void *data) | |
4026 | { | |
4027 | init_cutu_and_read_dies_no_follow (this_cu, | |
4028 | &dwarf2_per_objfile->abbrev, | |
3019eac3 | 4029 | NULL, |
dee91e82 DE |
4030 | die_reader_func, data); |
4031 | } | |
4032 | ||
4033 | /* die_reader_func for process_psymtab_comp_unit. */ | |
4034 | ||
4035 | static void | |
4036 | process_psymtab_comp_unit_reader (const struct die_reader_specs *reader, | |
4037 | gdb_byte *info_ptr, | |
4038 | struct die_info *comp_unit_die, | |
4039 | int has_children, | |
4040 | void *data) | |
4041 | { | |
4042 | struct dwarf2_cu *cu = reader->cu; | |
4043 | struct objfile *objfile = cu->objfile; | |
4044 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; | |
4045 | bfd *abfd = objfile->obfd; | |
4046 | struct attribute *attr; | |
4047 | CORE_ADDR baseaddr; | |
4048 | CORE_ADDR best_lowpc = 0, best_highpc = 0; | |
4049 | struct partial_symtab *pst; | |
4050 | int has_pc_info; | |
4051 | const char *filename; | |
95554aad | 4052 | int *want_partial_unit_ptr = data; |
dee91e82 | 4053 | |
95554aad TT |
4054 | if (comp_unit_die->tag == DW_TAG_partial_unit |
4055 | && (want_partial_unit_ptr == NULL | |
4056 | || !*want_partial_unit_ptr)) | |
dee91e82 DE |
4057 | return; |
4058 | ||
95554aad | 4059 | prepare_one_comp_unit (cu, comp_unit_die, language_minimal); |
dee91e82 DE |
4060 | |
4061 | cu->list_in_scope = &file_symbols; | |
c906108c | 4062 | |
93311388 | 4063 | /* Allocate a new partial symbol table structure. */ |
dee91e82 | 4064 | attr = dwarf2_attr (comp_unit_die, DW_AT_name, cu); |
3e2a0cee TT |
4065 | if (attr == NULL || !DW_STRING (attr)) |
4066 | filename = ""; | |
4067 | else | |
4068 | filename = DW_STRING (attr); | |
93311388 | 4069 | pst = start_psymtab_common (objfile, objfile->section_offsets, |
3e2a0cee | 4070 | filename, |
93311388 DE |
4071 | /* TEXTLOW and TEXTHIGH are set below. */ |
4072 | 0, | |
4073 | objfile->global_psymbols.next, | |
4074 | objfile->static_psymbols.next); | |
9750bca9 | 4075 | pst->psymtabs_addrmap_supported = 1; |
72bf9492 | 4076 | |
dee91e82 | 4077 | attr = dwarf2_attr (comp_unit_die, DW_AT_comp_dir, cu); |
d85a05f0 DJ |
4078 | if (attr != NULL) |
4079 | pst->dirname = DW_STRING (attr); | |
72bf9492 | 4080 | |
dee91e82 | 4081 | pst->read_symtab_private = per_cu; |
72bf9492 | 4082 | |
93311388 | 4083 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
e7c27a73 | 4084 | |
0963b4bd | 4085 | /* Store the function that reads in the rest of the symbol table. */ |
93311388 | 4086 | pst->read_symtab = dwarf2_psymtab_to_symtab; |
57349743 | 4087 | |
dee91e82 | 4088 | per_cu->v.psymtab = pst; |
c906108c | 4089 | |
dee91e82 | 4090 | dwarf2_find_base_address (comp_unit_die, cu); |
d85a05f0 | 4091 | |
93311388 DE |
4092 | /* Possibly set the default values of LOWPC and HIGHPC from |
4093 | `DW_AT_ranges'. */ | |
d85a05f0 | 4094 | has_pc_info = dwarf2_get_pc_bounds (comp_unit_die, &best_lowpc, |
dee91e82 | 4095 | &best_highpc, cu, pst); |
d85a05f0 | 4096 | if (has_pc_info == 1 && best_lowpc < best_highpc) |
93311388 DE |
4097 | /* Store the contiguous range if it is not empty; it can be empty for |
4098 | CUs with no code. */ | |
4099 | addrmap_set_empty (objfile->psymtabs_addrmap, | |
d85a05f0 DJ |
4100 | best_lowpc + baseaddr, |
4101 | best_highpc + baseaddr - 1, pst); | |
93311388 DE |
4102 | |
4103 | /* Check if comp unit has_children. | |
4104 | If so, read the rest of the partial symbols from this comp unit. | |
0963b4bd | 4105 | If not, there's no more debug_info for this comp unit. */ |
d85a05f0 | 4106 | if (has_children) |
93311388 DE |
4107 | { |
4108 | struct partial_die_info *first_die; | |
4109 | CORE_ADDR lowpc, highpc; | |
31ffec48 | 4110 | |
93311388 DE |
4111 | lowpc = ((CORE_ADDR) -1); |
4112 | highpc = ((CORE_ADDR) 0); | |
c906108c | 4113 | |
dee91e82 | 4114 | first_die = load_partial_dies (reader, info_ptr, 1); |
c906108c | 4115 | |
93311388 | 4116 | scan_partial_symbols (first_die, &lowpc, &highpc, |
dee91e82 | 4117 | ! has_pc_info, cu); |
57c22c6c | 4118 | |
93311388 DE |
4119 | /* If we didn't find a lowpc, set it to highpc to avoid |
4120 | complaints from `maint check'. */ | |
4121 | if (lowpc == ((CORE_ADDR) -1)) | |
4122 | lowpc = highpc; | |
10b3939b | 4123 | |
93311388 DE |
4124 | /* If the compilation unit didn't have an explicit address range, |
4125 | then use the information extracted from its child dies. */ | |
d85a05f0 | 4126 | if (! has_pc_info) |
93311388 | 4127 | { |
d85a05f0 DJ |
4128 | best_lowpc = lowpc; |
4129 | best_highpc = highpc; | |
93311388 DE |
4130 | } |
4131 | } | |
d85a05f0 DJ |
4132 | pst->textlow = best_lowpc + baseaddr; |
4133 | pst->texthigh = best_highpc + baseaddr; | |
c906108c | 4134 | |
93311388 DE |
4135 | pst->n_global_syms = objfile->global_psymbols.next - |
4136 | (objfile->global_psymbols.list + pst->globals_offset); | |
4137 | pst->n_static_syms = objfile->static_psymbols.next - | |
4138 | (objfile->static_psymbols.list + pst->statics_offset); | |
4139 | sort_pst_symbols (pst); | |
c906108c | 4140 | |
95554aad TT |
4141 | if (!VEC_empty (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs)) |
4142 | { | |
4143 | int i; | |
4144 | int len = VEC_length (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs); | |
4145 | struct dwarf2_per_cu_data *iter; | |
4146 | ||
4147 | /* Fill in 'dependencies' here; we fill in 'users' in a | |
4148 | post-pass. */ | |
4149 | pst->number_of_dependencies = len; | |
4150 | pst->dependencies = obstack_alloc (&objfile->objfile_obstack, | |
4151 | len * sizeof (struct symtab *)); | |
4152 | for (i = 0; | |
4153 | VEC_iterate (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs, | |
4154 | i, iter); | |
4155 | ++i) | |
4156 | pst->dependencies[i] = iter->v.psymtab; | |
4157 | ||
4158 | VEC_free (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs); | |
4159 | } | |
4160 | ||
3019eac3 | 4161 | if (per_cu->is_debug_types) |
348e048f DE |
4162 | { |
4163 | /* It's not clear we want to do anything with stmt lists here. | |
4164 | Waiting to see what gcc ultimately does. */ | |
4165 | } | |
d85a05f0 | 4166 | else |
93311388 DE |
4167 | { |
4168 | /* Get the list of files included in the current compilation unit, | |
4169 | and build a psymtab for each of them. */ | |
dee91e82 | 4170 | dwarf2_build_include_psymtabs (cu, comp_unit_die, pst); |
93311388 | 4171 | } |
dee91e82 | 4172 | } |
ae038cb0 | 4173 | |
dee91e82 DE |
4174 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. |
4175 | Process compilation unit THIS_CU for a psymtab. */ | |
4176 | ||
4177 | static void | |
95554aad TT |
4178 | process_psymtab_comp_unit (struct dwarf2_per_cu_data *this_cu, |
4179 | int want_partial_unit) | |
dee91e82 DE |
4180 | { |
4181 | /* If this compilation unit was already read in, free the | |
4182 | cached copy in order to read it in again. This is | |
4183 | necessary because we skipped some symbols when we first | |
4184 | read in the compilation unit (see load_partial_dies). | |
4185 | This problem could be avoided, but the benefit is unclear. */ | |
4186 | if (this_cu->cu != NULL) | |
4187 | free_one_cached_comp_unit (this_cu); | |
4188 | ||
3019eac3 | 4189 | gdb_assert (! this_cu->is_debug_types); |
fd820528 | 4190 | init_cutu_and_read_dies (this_cu, 0, 0, process_psymtab_comp_unit_reader, |
95554aad | 4191 | &want_partial_unit); |
dee91e82 DE |
4192 | |
4193 | /* Age out any secondary CUs. */ | |
4194 | age_cached_comp_units (); | |
93311388 | 4195 | } |
ff013f42 | 4196 | |
348e048f DE |
4197 | /* Traversal function for htab_traverse_noresize. |
4198 | Process one .debug_types comp-unit. */ | |
4199 | ||
4200 | static int | |
dee91e82 | 4201 | process_psymtab_type_unit (void **slot, void *info) |
348e048f | 4202 | { |
dee91e82 DE |
4203 | struct signatured_type *sig_type = (struct signatured_type *) *slot; |
4204 | struct dwarf2_per_cu_data *per_cu = &sig_type->per_cu; | |
348e048f | 4205 | |
fd820528 | 4206 | gdb_assert (per_cu->is_debug_types); |
a0f42c21 | 4207 | gdb_assert (info == NULL); |
348e048f | 4208 | |
dee91e82 DE |
4209 | /* If this compilation unit was already read in, free the |
4210 | cached copy in order to read it in again. This is | |
4211 | necessary because we skipped some symbols when we first | |
4212 | read in the compilation unit (see load_partial_dies). | |
4213 | This problem could be avoided, but the benefit is unclear. */ | |
4214 | if (per_cu->cu != NULL) | |
4215 | free_one_cached_comp_unit (per_cu); | |
4216 | ||
fd820528 DE |
4217 | init_cutu_and_read_dies (per_cu, 0, 0, process_psymtab_comp_unit_reader, |
4218 | NULL); | |
dee91e82 DE |
4219 | |
4220 | /* Age out any secondary CUs. */ | |
4221 | age_cached_comp_units (); | |
348e048f DE |
4222 | |
4223 | return 1; | |
4224 | } | |
4225 | ||
4226 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
4227 | Build partial symbol tables for the .debug_types comp-units. */ | |
4228 | ||
4229 | static void | |
4230 | build_type_psymtabs (struct objfile *objfile) | |
4231 | { | |
0e50663e | 4232 | if (! create_all_type_units (objfile)) |
348e048f DE |
4233 | return; |
4234 | ||
4235 | htab_traverse_noresize (dwarf2_per_objfile->signatured_types, | |
dee91e82 | 4236 | process_psymtab_type_unit, NULL); |
348e048f DE |
4237 | } |
4238 | ||
60606b2c TT |
4239 | /* A cleanup function that clears objfile's psymtabs_addrmap field. */ |
4240 | ||
4241 | static void | |
4242 | psymtabs_addrmap_cleanup (void *o) | |
4243 | { | |
4244 | struct objfile *objfile = o; | |
ec61707d | 4245 | |
60606b2c TT |
4246 | objfile->psymtabs_addrmap = NULL; |
4247 | } | |
4248 | ||
95554aad TT |
4249 | /* Compute the 'user' field for each psymtab in OBJFILE. */ |
4250 | ||
4251 | static void | |
4252 | set_partial_user (struct objfile *objfile) | |
4253 | { | |
4254 | int i; | |
4255 | ||
4256 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) | |
4257 | { | |
4258 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); | |
4259 | struct partial_symtab *pst = per_cu->v.psymtab; | |
4260 | int j; | |
4261 | ||
4262 | for (j = 0; j < pst->number_of_dependencies; ++j) | |
4263 | { | |
4264 | /* Set the 'user' field only if it is not already set. */ | |
4265 | if (pst->dependencies[j]->user == NULL) | |
4266 | pst->dependencies[j]->user = pst; | |
4267 | } | |
4268 | } | |
4269 | } | |
4270 | ||
93311388 DE |
4271 | /* Build the partial symbol table by doing a quick pass through the |
4272 | .debug_info and .debug_abbrev sections. */ | |
72bf9492 | 4273 | |
93311388 | 4274 | static void |
c67a9c90 | 4275 | dwarf2_build_psymtabs_hard (struct objfile *objfile) |
93311388 | 4276 | { |
60606b2c TT |
4277 | struct cleanup *back_to, *addrmap_cleanup; |
4278 | struct obstack temp_obstack; | |
21b2bd31 | 4279 | int i; |
93311388 | 4280 | |
98bfdba5 PA |
4281 | dwarf2_per_objfile->reading_partial_symbols = 1; |
4282 | ||
be391dca | 4283 | dwarf2_read_section (objfile, &dwarf2_per_objfile->info); |
91c24f0a | 4284 | |
93311388 DE |
4285 | /* Any cached compilation units will be linked by the per-objfile |
4286 | read_in_chain. Make sure to free them when we're done. */ | |
4287 | back_to = make_cleanup (free_cached_comp_units, NULL); | |
72bf9492 | 4288 | |
348e048f DE |
4289 | build_type_psymtabs (objfile); |
4290 | ||
93311388 | 4291 | create_all_comp_units (objfile); |
c906108c | 4292 | |
60606b2c TT |
4293 | /* Create a temporary address map on a temporary obstack. We later |
4294 | copy this to the final obstack. */ | |
4295 | obstack_init (&temp_obstack); | |
4296 | make_cleanup_obstack_free (&temp_obstack); | |
4297 | objfile->psymtabs_addrmap = addrmap_create_mutable (&temp_obstack); | |
4298 | addrmap_cleanup = make_cleanup (psymtabs_addrmap_cleanup, objfile); | |
72bf9492 | 4299 | |
21b2bd31 | 4300 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
93311388 | 4301 | { |
21b2bd31 | 4302 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
aaa75496 | 4303 | |
95554aad | 4304 | process_psymtab_comp_unit (per_cu, 0); |
c906108c | 4305 | } |
ff013f42 | 4306 | |
95554aad TT |
4307 | set_partial_user (objfile); |
4308 | ||
ff013f42 JK |
4309 | objfile->psymtabs_addrmap = addrmap_create_fixed (objfile->psymtabs_addrmap, |
4310 | &objfile->objfile_obstack); | |
60606b2c | 4311 | discard_cleanups (addrmap_cleanup); |
ff013f42 | 4312 | |
ae038cb0 DJ |
4313 | do_cleanups (back_to); |
4314 | } | |
4315 | ||
3019eac3 | 4316 | /* die_reader_func for load_partial_comp_unit. */ |
ae038cb0 DJ |
4317 | |
4318 | static void | |
dee91e82 DE |
4319 | load_partial_comp_unit_reader (const struct die_reader_specs *reader, |
4320 | gdb_byte *info_ptr, | |
4321 | struct die_info *comp_unit_die, | |
4322 | int has_children, | |
4323 | void *data) | |
ae038cb0 | 4324 | { |
dee91e82 | 4325 | struct dwarf2_cu *cu = reader->cu; |
ae038cb0 | 4326 | |
95554aad | 4327 | prepare_one_comp_unit (cu, comp_unit_die, language_minimal); |
ae038cb0 | 4328 | |
ae038cb0 DJ |
4329 | /* Check if comp unit has_children. |
4330 | If so, read the rest of the partial symbols from this comp unit. | |
0963b4bd | 4331 | If not, there's no more debug_info for this comp unit. */ |
d85a05f0 | 4332 | if (has_children) |
dee91e82 DE |
4333 | load_partial_dies (reader, info_ptr, 0); |
4334 | } | |
98bfdba5 | 4335 | |
dee91e82 DE |
4336 | /* Load the partial DIEs for a secondary CU into memory. |
4337 | This is also used when rereading a primary CU with load_all_dies. */ | |
c5b7e1cb | 4338 | |
dee91e82 DE |
4339 | static void |
4340 | load_partial_comp_unit (struct dwarf2_per_cu_data *this_cu) | |
4341 | { | |
fd820528 | 4342 | init_cutu_and_read_dies (this_cu, 1, 1, load_partial_comp_unit_reader, NULL); |
ae038cb0 DJ |
4343 | } |
4344 | ||
9cdd5dbd DE |
4345 | /* Create a list of all compilation units in OBJFILE. |
4346 | This is only done for -readnow and building partial symtabs. */ | |
ae038cb0 DJ |
4347 | |
4348 | static void | |
4349 | create_all_comp_units (struct objfile *objfile) | |
4350 | { | |
4351 | int n_allocated; | |
4352 | int n_comp_units; | |
4353 | struct dwarf2_per_cu_data **all_comp_units; | |
be391dca TT |
4354 | gdb_byte *info_ptr; |
4355 | ||
4356 | dwarf2_read_section (objfile, &dwarf2_per_objfile->info); | |
4357 | info_ptr = dwarf2_per_objfile->info.buffer; | |
ae038cb0 DJ |
4358 | |
4359 | n_comp_units = 0; | |
4360 | n_allocated = 10; | |
4361 | all_comp_units = xmalloc (n_allocated | |
4362 | * sizeof (struct dwarf2_per_cu_data *)); | |
6e70227d | 4363 | |
3e43a32a MS |
4364 | while (info_ptr < dwarf2_per_objfile->info.buffer |
4365 | + dwarf2_per_objfile->info.size) | |
ae038cb0 | 4366 | { |
c764a876 | 4367 | unsigned int length, initial_length_size; |
ae038cb0 | 4368 | struct dwarf2_per_cu_data *this_cu; |
b64f50a1 | 4369 | sect_offset offset; |
ae038cb0 | 4370 | |
b64f50a1 | 4371 | offset.sect_off = info_ptr - dwarf2_per_objfile->info.buffer; |
ae038cb0 DJ |
4372 | |
4373 | /* Read just enough information to find out where the next | |
4374 | compilation unit is. */ | |
c764a876 DE |
4375 | length = read_initial_length (objfile->obfd, info_ptr, |
4376 | &initial_length_size); | |
ae038cb0 DJ |
4377 | |
4378 | /* Save the compilation unit for later lookup. */ | |
4379 | this_cu = obstack_alloc (&objfile->objfile_obstack, | |
4380 | sizeof (struct dwarf2_per_cu_data)); | |
4381 | memset (this_cu, 0, sizeof (*this_cu)); | |
4382 | this_cu->offset = offset; | |
c764a876 | 4383 | this_cu->length = length + initial_length_size; |
9291a0cd | 4384 | this_cu->objfile = objfile; |
3019eac3 | 4385 | this_cu->info_or_types_section = &dwarf2_per_objfile->info; |
ae038cb0 DJ |
4386 | |
4387 | if (n_comp_units == n_allocated) | |
4388 | { | |
4389 | n_allocated *= 2; | |
4390 | all_comp_units = xrealloc (all_comp_units, | |
4391 | n_allocated | |
4392 | * sizeof (struct dwarf2_per_cu_data *)); | |
4393 | } | |
4394 | all_comp_units[n_comp_units++] = this_cu; | |
4395 | ||
4396 | info_ptr = info_ptr + this_cu->length; | |
4397 | } | |
4398 | ||
4399 | dwarf2_per_objfile->all_comp_units | |
4400 | = obstack_alloc (&objfile->objfile_obstack, | |
4401 | n_comp_units * sizeof (struct dwarf2_per_cu_data *)); | |
4402 | memcpy (dwarf2_per_objfile->all_comp_units, all_comp_units, | |
4403 | n_comp_units * sizeof (struct dwarf2_per_cu_data *)); | |
4404 | xfree (all_comp_units); | |
4405 | dwarf2_per_objfile->n_comp_units = n_comp_units; | |
c906108c SS |
4406 | } |
4407 | ||
5734ee8b DJ |
4408 | /* Process all loaded DIEs for compilation unit CU, starting at |
4409 | FIRST_DIE. The caller should pass NEED_PC == 1 if the compilation | |
4410 | unit DIE did not have PC info (DW_AT_low_pc and DW_AT_high_pc, or | |
4411 | DW_AT_ranges). If NEED_PC is set, then this function will set | |
4412 | *LOWPC and *HIGHPC to the lowest and highest PC values found in CU | |
4413 | and record the covered ranges in the addrmap. */ | |
c906108c | 4414 | |
72bf9492 DJ |
4415 | static void |
4416 | scan_partial_symbols (struct partial_die_info *first_die, CORE_ADDR *lowpc, | |
5734ee8b | 4417 | CORE_ADDR *highpc, int need_pc, struct dwarf2_cu *cu) |
c906108c | 4418 | { |
72bf9492 | 4419 | struct partial_die_info *pdi; |
c906108c | 4420 | |
91c24f0a DC |
4421 | /* Now, march along the PDI's, descending into ones which have |
4422 | interesting children but skipping the children of the other ones, | |
4423 | until we reach the end of the compilation unit. */ | |
c906108c | 4424 | |
72bf9492 | 4425 | pdi = first_die; |
91c24f0a | 4426 | |
72bf9492 DJ |
4427 | while (pdi != NULL) |
4428 | { | |
4429 | fixup_partial_die (pdi, cu); | |
c906108c | 4430 | |
f55ee35c | 4431 | /* Anonymous namespaces or modules have no name but have interesting |
91c24f0a DC |
4432 | children, so we need to look at them. Ditto for anonymous |
4433 | enums. */ | |
933c6fe4 | 4434 | |
72bf9492 | 4435 | if (pdi->name != NULL || pdi->tag == DW_TAG_namespace |
95554aad TT |
4436 | || pdi->tag == DW_TAG_module || pdi->tag == DW_TAG_enumeration_type |
4437 | || pdi->tag == DW_TAG_imported_unit) | |
c906108c | 4438 | { |
72bf9492 | 4439 | switch (pdi->tag) |
c906108c SS |
4440 | { |
4441 | case DW_TAG_subprogram: | |
5734ee8b | 4442 | add_partial_subprogram (pdi, lowpc, highpc, need_pc, cu); |
c906108c | 4443 | break; |
72929c62 | 4444 | case DW_TAG_constant: |
c906108c SS |
4445 | case DW_TAG_variable: |
4446 | case DW_TAG_typedef: | |
91c24f0a | 4447 | case DW_TAG_union_type: |
72bf9492 | 4448 | if (!pdi->is_declaration) |
63d06c5c | 4449 | { |
72bf9492 | 4450 | add_partial_symbol (pdi, cu); |
63d06c5c DC |
4451 | } |
4452 | break; | |
c906108c | 4453 | case DW_TAG_class_type: |
680b30c7 | 4454 | case DW_TAG_interface_type: |
c906108c | 4455 | case DW_TAG_structure_type: |
72bf9492 | 4456 | if (!pdi->is_declaration) |
c906108c | 4457 | { |
72bf9492 | 4458 | add_partial_symbol (pdi, cu); |
c906108c SS |
4459 | } |
4460 | break; | |
91c24f0a | 4461 | case DW_TAG_enumeration_type: |
72bf9492 DJ |
4462 | if (!pdi->is_declaration) |
4463 | add_partial_enumeration (pdi, cu); | |
c906108c SS |
4464 | break; |
4465 | case DW_TAG_base_type: | |
a02abb62 | 4466 | case DW_TAG_subrange_type: |
c906108c | 4467 | /* File scope base type definitions are added to the partial |
c5aa993b | 4468 | symbol table. */ |
72bf9492 | 4469 | add_partial_symbol (pdi, cu); |
c906108c | 4470 | break; |
d9fa45fe | 4471 | case DW_TAG_namespace: |
5734ee8b | 4472 | add_partial_namespace (pdi, lowpc, highpc, need_pc, cu); |
91c24f0a | 4473 | break; |
5d7cb8df JK |
4474 | case DW_TAG_module: |
4475 | add_partial_module (pdi, lowpc, highpc, need_pc, cu); | |
4476 | break; | |
95554aad TT |
4477 | case DW_TAG_imported_unit: |
4478 | { | |
4479 | struct dwarf2_per_cu_data *per_cu; | |
4480 | ||
4481 | per_cu = dwarf2_find_containing_comp_unit (pdi->d.offset, | |
4482 | cu->objfile); | |
4483 | ||
4484 | /* Go read the partial unit, if needed. */ | |
4485 | if (per_cu->v.psymtab == NULL) | |
4486 | process_psymtab_comp_unit (per_cu, 1); | |
4487 | ||
4488 | VEC_safe_push (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs, | |
4489 | per_cu); | |
4490 | } | |
4491 | break; | |
c906108c SS |
4492 | default: |
4493 | break; | |
4494 | } | |
4495 | } | |
4496 | ||
72bf9492 DJ |
4497 | /* If the die has a sibling, skip to the sibling. */ |
4498 | ||
4499 | pdi = pdi->die_sibling; | |
4500 | } | |
4501 | } | |
4502 | ||
4503 | /* Functions used to compute the fully scoped name of a partial DIE. | |
91c24f0a | 4504 | |
72bf9492 | 4505 | Normally, this is simple. For C++, the parent DIE's fully scoped |
987504bb JJ |
4506 | name is concatenated with "::" and the partial DIE's name. For |
4507 | Java, the same thing occurs except that "." is used instead of "::". | |
72bf9492 DJ |
4508 | Enumerators are an exception; they use the scope of their parent |
4509 | enumeration type, i.e. the name of the enumeration type is not | |
4510 | prepended to the enumerator. | |
91c24f0a | 4511 | |
72bf9492 DJ |
4512 | There are two complexities. One is DW_AT_specification; in this |
4513 | case "parent" means the parent of the target of the specification, | |
4514 | instead of the direct parent of the DIE. The other is compilers | |
4515 | which do not emit DW_TAG_namespace; in this case we try to guess | |
4516 | the fully qualified name of structure types from their members' | |
4517 | linkage names. This must be done using the DIE's children rather | |
4518 | than the children of any DW_AT_specification target. We only need | |
4519 | to do this for structures at the top level, i.e. if the target of | |
4520 | any DW_AT_specification (if any; otherwise the DIE itself) does not | |
4521 | have a parent. */ | |
4522 | ||
4523 | /* Compute the scope prefix associated with PDI's parent, in | |
4524 | compilation unit CU. The result will be allocated on CU's | |
4525 | comp_unit_obstack, or a copy of the already allocated PDI->NAME | |
4526 | field. NULL is returned if no prefix is necessary. */ | |
4527 | static char * | |
4528 | partial_die_parent_scope (struct partial_die_info *pdi, | |
4529 | struct dwarf2_cu *cu) | |
4530 | { | |
4531 | char *grandparent_scope; | |
4532 | struct partial_die_info *parent, *real_pdi; | |
91c24f0a | 4533 | |
72bf9492 DJ |
4534 | /* We need to look at our parent DIE; if we have a DW_AT_specification, |
4535 | then this means the parent of the specification DIE. */ | |
4536 | ||
4537 | real_pdi = pdi; | |
72bf9492 | 4538 | while (real_pdi->has_specification) |
10b3939b | 4539 | real_pdi = find_partial_die (real_pdi->spec_offset, cu); |
72bf9492 DJ |
4540 | |
4541 | parent = real_pdi->die_parent; | |
4542 | if (parent == NULL) | |
4543 | return NULL; | |
4544 | ||
4545 | if (parent->scope_set) | |
4546 | return parent->scope; | |
4547 | ||
4548 | fixup_partial_die (parent, cu); | |
4549 | ||
10b3939b | 4550 | grandparent_scope = partial_die_parent_scope (parent, cu); |
72bf9492 | 4551 | |
acebe513 UW |
4552 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
4553 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
4554 | Work around this problem here. */ | |
4555 | if (cu->language == language_cplus | |
6e70227d | 4556 | && parent->tag == DW_TAG_namespace |
acebe513 UW |
4557 | && strcmp (parent->name, "::") == 0 |
4558 | && grandparent_scope == NULL) | |
4559 | { | |
4560 | parent->scope = NULL; | |
4561 | parent->scope_set = 1; | |
4562 | return NULL; | |
4563 | } | |
4564 | ||
9c6c53f7 SA |
4565 | if (pdi->tag == DW_TAG_enumerator) |
4566 | /* Enumerators should not get the name of the enumeration as a prefix. */ | |
4567 | parent->scope = grandparent_scope; | |
4568 | else if (parent->tag == DW_TAG_namespace | |
f55ee35c | 4569 | || parent->tag == DW_TAG_module |
72bf9492 DJ |
4570 | || parent->tag == DW_TAG_structure_type |
4571 | || parent->tag == DW_TAG_class_type | |
680b30c7 | 4572 | || parent->tag == DW_TAG_interface_type |
ceeb3d5a TT |
4573 | || parent->tag == DW_TAG_union_type |
4574 | || parent->tag == DW_TAG_enumeration_type) | |
72bf9492 DJ |
4575 | { |
4576 | if (grandparent_scope == NULL) | |
4577 | parent->scope = parent->name; | |
4578 | else | |
3e43a32a MS |
4579 | parent->scope = typename_concat (&cu->comp_unit_obstack, |
4580 | grandparent_scope, | |
f55ee35c | 4581 | parent->name, 0, cu); |
72bf9492 | 4582 | } |
72bf9492 DJ |
4583 | else |
4584 | { | |
4585 | /* FIXME drow/2004-04-01: What should we be doing with | |
4586 | function-local names? For partial symbols, we should probably be | |
4587 | ignoring them. */ | |
4588 | complaint (&symfile_complaints, | |
e2e0b3e5 | 4589 | _("unhandled containing DIE tag %d for DIE at %d"), |
b64f50a1 | 4590 | parent->tag, pdi->offset.sect_off); |
72bf9492 | 4591 | parent->scope = grandparent_scope; |
c906108c SS |
4592 | } |
4593 | ||
72bf9492 DJ |
4594 | parent->scope_set = 1; |
4595 | return parent->scope; | |
4596 | } | |
4597 | ||
4598 | /* Return the fully scoped name associated with PDI, from compilation unit | |
4599 | CU. The result will be allocated with malloc. */ | |
4568ecf9 | 4600 | |
72bf9492 DJ |
4601 | static char * |
4602 | partial_die_full_name (struct partial_die_info *pdi, | |
4603 | struct dwarf2_cu *cu) | |
4604 | { | |
4605 | char *parent_scope; | |
4606 | ||
98bfdba5 PA |
4607 | /* If this is a template instantiation, we can not work out the |
4608 | template arguments from partial DIEs. So, unfortunately, we have | |
4609 | to go through the full DIEs. At least any work we do building | |
4610 | types here will be reused if full symbols are loaded later. */ | |
4611 | if (pdi->has_template_arguments) | |
4612 | { | |
4613 | fixup_partial_die (pdi, cu); | |
4614 | ||
4615 | if (pdi->name != NULL && strchr (pdi->name, '<') == NULL) | |
4616 | { | |
4617 | struct die_info *die; | |
4618 | struct attribute attr; | |
4619 | struct dwarf2_cu *ref_cu = cu; | |
4620 | ||
b64f50a1 | 4621 | /* DW_FORM_ref_addr is using section offset. */ |
98bfdba5 PA |
4622 | attr.name = 0; |
4623 | attr.form = DW_FORM_ref_addr; | |
4568ecf9 | 4624 | attr.u.unsnd = pdi->offset.sect_off; |
98bfdba5 PA |
4625 | die = follow_die_ref (NULL, &attr, &ref_cu); |
4626 | ||
4627 | return xstrdup (dwarf2_full_name (NULL, die, ref_cu)); | |
4628 | } | |
4629 | } | |
4630 | ||
72bf9492 DJ |
4631 | parent_scope = partial_die_parent_scope (pdi, cu); |
4632 | if (parent_scope == NULL) | |
4633 | return NULL; | |
4634 | else | |
f55ee35c | 4635 | return typename_concat (NULL, parent_scope, pdi->name, 0, cu); |
c906108c SS |
4636 | } |
4637 | ||
4638 | static void | |
72bf9492 | 4639 | add_partial_symbol (struct partial_die_info *pdi, struct dwarf2_cu *cu) |
c906108c | 4640 | { |
e7c27a73 | 4641 | struct objfile *objfile = cu->objfile; |
c906108c | 4642 | CORE_ADDR addr = 0; |
decbce07 | 4643 | char *actual_name = NULL; |
e142c38c | 4644 | CORE_ADDR baseaddr; |
72bf9492 | 4645 | int built_actual_name = 0; |
e142c38c DJ |
4646 | |
4647 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 4648 | |
94af9270 KS |
4649 | actual_name = partial_die_full_name (pdi, cu); |
4650 | if (actual_name) | |
4651 | built_actual_name = 1; | |
63d06c5c | 4652 | |
72bf9492 DJ |
4653 | if (actual_name == NULL) |
4654 | actual_name = pdi->name; | |
4655 | ||
c906108c SS |
4656 | switch (pdi->tag) |
4657 | { | |
4658 | case DW_TAG_subprogram: | |
2cfa0c8d | 4659 | if (pdi->is_external || cu->language == language_ada) |
c906108c | 4660 | { |
2cfa0c8d JB |
4661 | /* brobecker/2007-12-26: Normally, only "external" DIEs are part |
4662 | of the global scope. But in Ada, we want to be able to access | |
4663 | nested procedures globally. So all Ada subprograms are stored | |
4664 | in the global scope. */ | |
f47fb265 | 4665 | /* prim_record_minimal_symbol (actual_name, pdi->lowpc + baseaddr, |
c5aa993b | 4666 | mst_text, objfile); */ |
f47fb265 MS |
4667 | add_psymbol_to_list (actual_name, strlen (actual_name), |
4668 | built_actual_name, | |
4669 | VAR_DOMAIN, LOC_BLOCK, | |
4670 | &objfile->global_psymbols, | |
4671 | 0, pdi->lowpc + baseaddr, | |
4672 | cu->language, objfile); | |
c906108c SS |
4673 | } |
4674 | else | |
4675 | { | |
f47fb265 | 4676 | /* prim_record_minimal_symbol (actual_name, pdi->lowpc + baseaddr, |
c5aa993b | 4677 | mst_file_text, objfile); */ |
f47fb265 MS |
4678 | add_psymbol_to_list (actual_name, strlen (actual_name), |
4679 | built_actual_name, | |
4680 | VAR_DOMAIN, LOC_BLOCK, | |
4681 | &objfile->static_psymbols, | |
4682 | 0, pdi->lowpc + baseaddr, | |
4683 | cu->language, objfile); | |
c906108c SS |
4684 | } |
4685 | break; | |
72929c62 JB |
4686 | case DW_TAG_constant: |
4687 | { | |
4688 | struct psymbol_allocation_list *list; | |
4689 | ||
4690 | if (pdi->is_external) | |
4691 | list = &objfile->global_psymbols; | |
4692 | else | |
4693 | list = &objfile->static_psymbols; | |
f47fb265 MS |
4694 | add_psymbol_to_list (actual_name, strlen (actual_name), |
4695 | built_actual_name, VAR_DOMAIN, LOC_STATIC, | |
4696 | list, 0, 0, cu->language, objfile); | |
72929c62 JB |
4697 | } |
4698 | break; | |
c906108c | 4699 | case DW_TAG_variable: |
95554aad TT |
4700 | if (pdi->d.locdesc) |
4701 | addr = decode_locdesc (pdi->d.locdesc, cu); | |
caac4577 | 4702 | |
95554aad | 4703 | if (pdi->d.locdesc |
caac4577 JG |
4704 | && addr == 0 |
4705 | && !dwarf2_per_objfile->has_section_at_zero) | |
4706 | { | |
4707 | /* A global or static variable may also have been stripped | |
4708 | out by the linker if unused, in which case its address | |
4709 | will be nullified; do not add such variables into partial | |
4710 | symbol table then. */ | |
4711 | } | |
4712 | else if (pdi->is_external) | |
c906108c SS |
4713 | { |
4714 | /* Global Variable. | |
4715 | Don't enter into the minimal symbol tables as there is | |
4716 | a minimal symbol table entry from the ELF symbols already. | |
4717 | Enter into partial symbol table if it has a location | |
4718 | descriptor or a type. | |
4719 | If the location descriptor is missing, new_symbol will create | |
4720 | a LOC_UNRESOLVED symbol, the address of the variable will then | |
4721 | be determined from the minimal symbol table whenever the variable | |
4722 | is referenced. | |
4723 | The address for the partial symbol table entry is not | |
4724 | used by GDB, but it comes in handy for debugging partial symbol | |
4725 | table building. */ | |
4726 | ||
95554aad | 4727 | if (pdi->d.locdesc || pdi->has_type) |
f47fb265 MS |
4728 | add_psymbol_to_list (actual_name, strlen (actual_name), |
4729 | built_actual_name, | |
4730 | VAR_DOMAIN, LOC_STATIC, | |
4731 | &objfile->global_psymbols, | |
4732 | 0, addr + baseaddr, | |
4733 | cu->language, objfile); | |
c906108c SS |
4734 | } |
4735 | else | |
4736 | { | |
0963b4bd | 4737 | /* Static Variable. Skip symbols without location descriptors. */ |
95554aad | 4738 | if (pdi->d.locdesc == NULL) |
decbce07 MS |
4739 | { |
4740 | if (built_actual_name) | |
4741 | xfree (actual_name); | |
4742 | return; | |
4743 | } | |
f47fb265 | 4744 | /* prim_record_minimal_symbol (actual_name, addr + baseaddr, |
c5aa993b | 4745 | mst_file_data, objfile); */ |
f47fb265 MS |
4746 | add_psymbol_to_list (actual_name, strlen (actual_name), |
4747 | built_actual_name, | |
4748 | VAR_DOMAIN, LOC_STATIC, | |
4749 | &objfile->static_psymbols, | |
4750 | 0, addr + baseaddr, | |
4751 | cu->language, objfile); | |
c906108c SS |
4752 | } |
4753 | break; | |
4754 | case DW_TAG_typedef: | |
4755 | case DW_TAG_base_type: | |
a02abb62 | 4756 | case DW_TAG_subrange_type: |
38d518c9 | 4757 | add_psymbol_to_list (actual_name, strlen (actual_name), |
04a679b8 | 4758 | built_actual_name, |
176620f1 | 4759 | VAR_DOMAIN, LOC_TYPEDEF, |
c906108c | 4760 | &objfile->static_psymbols, |
e142c38c | 4761 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c | 4762 | break; |
72bf9492 DJ |
4763 | case DW_TAG_namespace: |
4764 | add_psymbol_to_list (actual_name, strlen (actual_name), | |
04a679b8 | 4765 | built_actual_name, |
72bf9492 DJ |
4766 | VAR_DOMAIN, LOC_TYPEDEF, |
4767 | &objfile->global_psymbols, | |
4768 | 0, (CORE_ADDR) 0, cu->language, objfile); | |
4769 | break; | |
c906108c | 4770 | case DW_TAG_class_type: |
680b30c7 | 4771 | case DW_TAG_interface_type: |
c906108c SS |
4772 | case DW_TAG_structure_type: |
4773 | case DW_TAG_union_type: | |
4774 | case DW_TAG_enumeration_type: | |
fa4028e9 JB |
4775 | /* Skip external references. The DWARF standard says in the section |
4776 | about "Structure, Union, and Class Type Entries": "An incomplete | |
4777 | structure, union or class type is represented by a structure, | |
4778 | union or class entry that does not have a byte size attribute | |
4779 | and that has a DW_AT_declaration attribute." */ | |
4780 | if (!pdi->has_byte_size && pdi->is_declaration) | |
decbce07 MS |
4781 | { |
4782 | if (built_actual_name) | |
4783 | xfree (actual_name); | |
4784 | return; | |
4785 | } | |
fa4028e9 | 4786 | |
63d06c5c DC |
4787 | /* NOTE: carlton/2003-10-07: See comment in new_symbol about |
4788 | static vs. global. */ | |
38d518c9 | 4789 | add_psymbol_to_list (actual_name, strlen (actual_name), |
04a679b8 | 4790 | built_actual_name, |
176620f1 | 4791 | STRUCT_DOMAIN, LOC_TYPEDEF, |
987504bb JJ |
4792 | (cu->language == language_cplus |
4793 | || cu->language == language_java) | |
63d06c5c DC |
4794 | ? &objfile->global_psymbols |
4795 | : &objfile->static_psymbols, | |
e142c38c | 4796 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c | 4797 | |
c906108c SS |
4798 | break; |
4799 | case DW_TAG_enumerator: | |
38d518c9 | 4800 | add_psymbol_to_list (actual_name, strlen (actual_name), |
04a679b8 | 4801 | built_actual_name, |
176620f1 | 4802 | VAR_DOMAIN, LOC_CONST, |
987504bb JJ |
4803 | (cu->language == language_cplus |
4804 | || cu->language == language_java) | |
f6fe98ef DJ |
4805 | ? &objfile->global_psymbols |
4806 | : &objfile->static_psymbols, | |
e142c38c | 4807 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c SS |
4808 | break; |
4809 | default: | |
4810 | break; | |
4811 | } | |
5c4e30ca | 4812 | |
72bf9492 DJ |
4813 | if (built_actual_name) |
4814 | xfree (actual_name); | |
c906108c SS |
4815 | } |
4816 | ||
5c4e30ca DC |
4817 | /* Read a partial die corresponding to a namespace; also, add a symbol |
4818 | corresponding to that namespace to the symbol table. NAMESPACE is | |
4819 | the name of the enclosing namespace. */ | |
91c24f0a | 4820 | |
72bf9492 DJ |
4821 | static void |
4822 | add_partial_namespace (struct partial_die_info *pdi, | |
91c24f0a | 4823 | CORE_ADDR *lowpc, CORE_ADDR *highpc, |
5734ee8b | 4824 | int need_pc, struct dwarf2_cu *cu) |
91c24f0a | 4825 | { |
72bf9492 | 4826 | /* Add a symbol for the namespace. */ |
e7c27a73 | 4827 | |
72bf9492 | 4828 | add_partial_symbol (pdi, cu); |
5c4e30ca DC |
4829 | |
4830 | /* Now scan partial symbols in that namespace. */ | |
4831 | ||
91c24f0a | 4832 | if (pdi->has_children) |
5734ee8b | 4833 | scan_partial_symbols (pdi->die_child, lowpc, highpc, need_pc, cu); |
91c24f0a DC |
4834 | } |
4835 | ||
5d7cb8df JK |
4836 | /* Read a partial die corresponding to a Fortran module. */ |
4837 | ||
4838 | static void | |
4839 | add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, | |
4840 | CORE_ADDR *highpc, int need_pc, struct dwarf2_cu *cu) | |
4841 | { | |
f55ee35c | 4842 | /* Now scan partial symbols in that module. */ |
5d7cb8df JK |
4843 | |
4844 | if (pdi->has_children) | |
4845 | scan_partial_symbols (pdi->die_child, lowpc, highpc, need_pc, cu); | |
4846 | } | |
4847 | ||
bc30ff58 JB |
4848 | /* Read a partial die corresponding to a subprogram and create a partial |
4849 | symbol for that subprogram. When the CU language allows it, this | |
4850 | routine also defines a partial symbol for each nested subprogram | |
4851 | that this subprogram contains. | |
6e70227d | 4852 | |
bc30ff58 JB |
4853 | DIE my also be a lexical block, in which case we simply search |
4854 | recursively for suprograms defined inside that lexical block. | |
4855 | Again, this is only performed when the CU language allows this | |
4856 | type of definitions. */ | |
4857 | ||
4858 | static void | |
4859 | add_partial_subprogram (struct partial_die_info *pdi, | |
4860 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 4861 | int need_pc, struct dwarf2_cu *cu) |
bc30ff58 JB |
4862 | { |
4863 | if (pdi->tag == DW_TAG_subprogram) | |
4864 | { | |
4865 | if (pdi->has_pc_info) | |
4866 | { | |
4867 | if (pdi->lowpc < *lowpc) | |
4868 | *lowpc = pdi->lowpc; | |
4869 | if (pdi->highpc > *highpc) | |
4870 | *highpc = pdi->highpc; | |
5734ee8b DJ |
4871 | if (need_pc) |
4872 | { | |
4873 | CORE_ADDR baseaddr; | |
4874 | struct objfile *objfile = cu->objfile; | |
4875 | ||
4876 | baseaddr = ANOFFSET (objfile->section_offsets, | |
4877 | SECT_OFF_TEXT (objfile)); | |
4878 | addrmap_set_empty (objfile->psymtabs_addrmap, | |
01637564 DE |
4879 | pdi->lowpc + baseaddr, |
4880 | pdi->highpc - 1 + baseaddr, | |
9291a0cd | 4881 | cu->per_cu->v.psymtab); |
5734ee8b | 4882 | } |
481860b3 GB |
4883 | } |
4884 | ||
4885 | if (pdi->has_pc_info || (!pdi->is_external && pdi->may_be_inlined)) | |
4886 | { | |
bc30ff58 | 4887 | if (!pdi->is_declaration) |
e8d05480 JB |
4888 | /* Ignore subprogram DIEs that do not have a name, they are |
4889 | illegal. Do not emit a complaint at this point, we will | |
4890 | do so when we convert this psymtab into a symtab. */ | |
4891 | if (pdi->name) | |
4892 | add_partial_symbol (pdi, cu); | |
bc30ff58 JB |
4893 | } |
4894 | } | |
6e70227d | 4895 | |
bc30ff58 JB |
4896 | if (! pdi->has_children) |
4897 | return; | |
4898 | ||
4899 | if (cu->language == language_ada) | |
4900 | { | |
4901 | pdi = pdi->die_child; | |
4902 | while (pdi != NULL) | |
4903 | { | |
4904 | fixup_partial_die (pdi, cu); | |
4905 | if (pdi->tag == DW_TAG_subprogram | |
4906 | || pdi->tag == DW_TAG_lexical_block) | |
5734ee8b | 4907 | add_partial_subprogram (pdi, lowpc, highpc, need_pc, cu); |
bc30ff58 JB |
4908 | pdi = pdi->die_sibling; |
4909 | } | |
4910 | } | |
4911 | } | |
4912 | ||
91c24f0a DC |
4913 | /* Read a partial die corresponding to an enumeration type. */ |
4914 | ||
72bf9492 DJ |
4915 | static void |
4916 | add_partial_enumeration (struct partial_die_info *enum_pdi, | |
4917 | struct dwarf2_cu *cu) | |
91c24f0a | 4918 | { |
72bf9492 | 4919 | struct partial_die_info *pdi; |
91c24f0a DC |
4920 | |
4921 | if (enum_pdi->name != NULL) | |
72bf9492 DJ |
4922 | add_partial_symbol (enum_pdi, cu); |
4923 | ||
4924 | pdi = enum_pdi->die_child; | |
4925 | while (pdi) | |
91c24f0a | 4926 | { |
72bf9492 | 4927 | if (pdi->tag != DW_TAG_enumerator || pdi->name == NULL) |
e2e0b3e5 | 4928 | complaint (&symfile_complaints, _("malformed enumerator DIE ignored")); |
91c24f0a | 4929 | else |
72bf9492 DJ |
4930 | add_partial_symbol (pdi, cu); |
4931 | pdi = pdi->die_sibling; | |
91c24f0a | 4932 | } |
91c24f0a DC |
4933 | } |
4934 | ||
6caca83c CC |
4935 | /* Return the initial uleb128 in the die at INFO_PTR. */ |
4936 | ||
4937 | static unsigned int | |
4938 | peek_abbrev_code (bfd *abfd, gdb_byte *info_ptr) | |
4939 | { | |
4940 | unsigned int bytes_read; | |
4941 | ||
4942 | return read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
4943 | } | |
4944 | ||
4bb7a0a7 DJ |
4945 | /* Read the initial uleb128 in the die at INFO_PTR in compilation unit CU. |
4946 | Return the corresponding abbrev, or NULL if the number is zero (indicating | |
4947 | an empty DIE). In either case *BYTES_READ will be set to the length of | |
4948 | the initial number. */ | |
4949 | ||
4950 | static struct abbrev_info * | |
fe1b8b76 | 4951 | peek_die_abbrev (gdb_byte *info_ptr, unsigned int *bytes_read, |
891d2f0b | 4952 | struct dwarf2_cu *cu) |
4bb7a0a7 DJ |
4953 | { |
4954 | bfd *abfd = cu->objfile->obfd; | |
4955 | unsigned int abbrev_number; | |
4956 | struct abbrev_info *abbrev; | |
4957 | ||
4958 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
4959 | ||
4960 | if (abbrev_number == 0) | |
4961 | return NULL; | |
4962 | ||
4963 | abbrev = dwarf2_lookup_abbrev (abbrev_number, cu); | |
4964 | if (!abbrev) | |
4965 | { | |
3e43a32a MS |
4966 | error (_("Dwarf Error: Could not find abbrev number %d [in module %s]"), |
4967 | abbrev_number, bfd_get_filename (abfd)); | |
4bb7a0a7 DJ |
4968 | } |
4969 | ||
4970 | return abbrev; | |
4971 | } | |
4972 | ||
93311388 DE |
4973 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
4974 | Returns a pointer to the end of a series of DIEs, terminated by an empty | |
4bb7a0a7 DJ |
4975 | DIE. Any children of the skipped DIEs will also be skipped. */ |
4976 | ||
fe1b8b76 | 4977 | static gdb_byte * |
dee91e82 | 4978 | skip_children (const struct die_reader_specs *reader, gdb_byte *info_ptr) |
4bb7a0a7 | 4979 | { |
dee91e82 | 4980 | struct dwarf2_cu *cu = reader->cu; |
4bb7a0a7 DJ |
4981 | struct abbrev_info *abbrev; |
4982 | unsigned int bytes_read; | |
4983 | ||
4984 | while (1) | |
4985 | { | |
4986 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, cu); | |
4987 | if (abbrev == NULL) | |
4988 | return info_ptr + bytes_read; | |
4989 | else | |
dee91e82 | 4990 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
4bb7a0a7 DJ |
4991 | } |
4992 | } | |
4993 | ||
93311388 DE |
4994 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
4995 | INFO_PTR should point just after the initial uleb128 of a DIE, and the | |
4bb7a0a7 DJ |
4996 | abbrev corresponding to that skipped uleb128 should be passed in |
4997 | ABBREV. Returns a pointer to this DIE's sibling, skipping any | |
4998 | children. */ | |
4999 | ||
fe1b8b76 | 5000 | static gdb_byte * |
dee91e82 DE |
5001 | skip_one_die (const struct die_reader_specs *reader, gdb_byte *info_ptr, |
5002 | struct abbrev_info *abbrev) | |
4bb7a0a7 DJ |
5003 | { |
5004 | unsigned int bytes_read; | |
5005 | struct attribute attr; | |
dee91e82 DE |
5006 | bfd *abfd = reader->abfd; |
5007 | struct dwarf2_cu *cu = reader->cu; | |
5008 | gdb_byte *buffer = reader->buffer; | |
4bb7a0a7 DJ |
5009 | unsigned int form, i; |
5010 | ||
5011 | for (i = 0; i < abbrev->num_attrs; i++) | |
5012 | { | |
5013 | /* The only abbrev we care about is DW_AT_sibling. */ | |
5014 | if (abbrev->attrs[i].name == DW_AT_sibling) | |
5015 | { | |
dee91e82 | 5016 | read_attribute (reader, &attr, &abbrev->attrs[i], info_ptr); |
4bb7a0a7 | 5017 | if (attr.form == DW_FORM_ref_addr) |
3e43a32a MS |
5018 | complaint (&symfile_complaints, |
5019 | _("ignoring absolute DW_AT_sibling")); | |
4bb7a0a7 | 5020 | else |
b64f50a1 | 5021 | return buffer + dwarf2_get_ref_die_offset (&attr).sect_off; |
4bb7a0a7 DJ |
5022 | } |
5023 | ||
5024 | /* If it isn't DW_AT_sibling, skip this attribute. */ | |
5025 | form = abbrev->attrs[i].form; | |
5026 | skip_attribute: | |
5027 | switch (form) | |
5028 | { | |
4bb7a0a7 | 5029 | case DW_FORM_ref_addr: |
ae411497 TT |
5030 | /* In DWARF 2, DW_FORM_ref_addr is address sized; in DWARF 3 |
5031 | and later it is offset sized. */ | |
5032 | if (cu->header.version == 2) | |
5033 | info_ptr += cu->header.addr_size; | |
5034 | else | |
5035 | info_ptr += cu->header.offset_size; | |
5036 | break; | |
5037 | case DW_FORM_addr: | |
4bb7a0a7 DJ |
5038 | info_ptr += cu->header.addr_size; |
5039 | break; | |
5040 | case DW_FORM_data1: | |
5041 | case DW_FORM_ref1: | |
5042 | case DW_FORM_flag: | |
5043 | info_ptr += 1; | |
5044 | break; | |
2dc7f7b3 TT |
5045 | case DW_FORM_flag_present: |
5046 | break; | |
4bb7a0a7 DJ |
5047 | case DW_FORM_data2: |
5048 | case DW_FORM_ref2: | |
5049 | info_ptr += 2; | |
5050 | break; | |
5051 | case DW_FORM_data4: | |
5052 | case DW_FORM_ref4: | |
5053 | info_ptr += 4; | |
5054 | break; | |
5055 | case DW_FORM_data8: | |
5056 | case DW_FORM_ref8: | |
55f1336d | 5057 | case DW_FORM_ref_sig8: |
4bb7a0a7 DJ |
5058 | info_ptr += 8; |
5059 | break; | |
5060 | case DW_FORM_string: | |
9b1c24c8 | 5061 | read_direct_string (abfd, info_ptr, &bytes_read); |
4bb7a0a7 DJ |
5062 | info_ptr += bytes_read; |
5063 | break; | |
2dc7f7b3 | 5064 | case DW_FORM_sec_offset: |
4bb7a0a7 DJ |
5065 | case DW_FORM_strp: |
5066 | info_ptr += cu->header.offset_size; | |
5067 | break; | |
2dc7f7b3 | 5068 | case DW_FORM_exprloc: |
4bb7a0a7 DJ |
5069 | case DW_FORM_block: |
5070 | info_ptr += read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
5071 | info_ptr += bytes_read; | |
5072 | break; | |
5073 | case DW_FORM_block1: | |
5074 | info_ptr += 1 + read_1_byte (abfd, info_ptr); | |
5075 | break; | |
5076 | case DW_FORM_block2: | |
5077 | info_ptr += 2 + read_2_bytes (abfd, info_ptr); | |
5078 | break; | |
5079 | case DW_FORM_block4: | |
5080 | info_ptr += 4 + read_4_bytes (abfd, info_ptr); | |
5081 | break; | |
5082 | case DW_FORM_sdata: | |
5083 | case DW_FORM_udata: | |
5084 | case DW_FORM_ref_udata: | |
3019eac3 DE |
5085 | case DW_FORM_GNU_addr_index: |
5086 | case DW_FORM_GNU_str_index: | |
4bb7a0a7 DJ |
5087 | info_ptr = skip_leb128 (abfd, info_ptr); |
5088 | break; | |
5089 | case DW_FORM_indirect: | |
5090 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
5091 | info_ptr += bytes_read; | |
5092 | /* We need to continue parsing from here, so just go back to | |
5093 | the top. */ | |
5094 | goto skip_attribute; | |
5095 | ||
5096 | default: | |
3e43a32a MS |
5097 | error (_("Dwarf Error: Cannot handle %s " |
5098 | "in DWARF reader [in module %s]"), | |
4bb7a0a7 DJ |
5099 | dwarf_form_name (form), |
5100 | bfd_get_filename (abfd)); | |
5101 | } | |
5102 | } | |
5103 | ||
5104 | if (abbrev->has_children) | |
dee91e82 | 5105 | return skip_children (reader, info_ptr); |
4bb7a0a7 DJ |
5106 | else |
5107 | return info_ptr; | |
5108 | } | |
5109 | ||
93311388 | 5110 | /* Locate ORIG_PDI's sibling. |
dee91e82 | 5111 | INFO_PTR should point to the start of the next DIE after ORIG_PDI. */ |
91c24f0a | 5112 | |
fe1b8b76 | 5113 | static gdb_byte * |
dee91e82 DE |
5114 | locate_pdi_sibling (const struct die_reader_specs *reader, |
5115 | struct partial_die_info *orig_pdi, | |
5116 | gdb_byte *info_ptr) | |
91c24f0a DC |
5117 | { |
5118 | /* Do we know the sibling already? */ | |
72bf9492 | 5119 | |
91c24f0a DC |
5120 | if (orig_pdi->sibling) |
5121 | return orig_pdi->sibling; | |
5122 | ||
5123 | /* Are there any children to deal with? */ | |
5124 | ||
5125 | if (!orig_pdi->has_children) | |
5126 | return info_ptr; | |
5127 | ||
4bb7a0a7 | 5128 | /* Skip the children the long way. */ |
91c24f0a | 5129 | |
dee91e82 | 5130 | return skip_children (reader, info_ptr); |
91c24f0a DC |
5131 | } |
5132 | ||
c906108c SS |
5133 | /* Expand this partial symbol table into a full symbol table. */ |
5134 | ||
5135 | static void | |
fba45db2 | 5136 | dwarf2_psymtab_to_symtab (struct partial_symtab *pst) |
c906108c | 5137 | { |
c906108c SS |
5138 | if (pst != NULL) |
5139 | { | |
5140 | if (pst->readin) | |
5141 | { | |
3e43a32a MS |
5142 | warning (_("bug: psymtab for %s is already read in."), |
5143 | pst->filename); | |
c906108c SS |
5144 | } |
5145 | else | |
5146 | { | |
5147 | if (info_verbose) | |
5148 | { | |
3e43a32a MS |
5149 | printf_filtered (_("Reading in symbols for %s..."), |
5150 | pst->filename); | |
c906108c SS |
5151 | gdb_flush (gdb_stdout); |
5152 | } | |
5153 | ||
10b3939b DJ |
5154 | /* Restore our global data. */ |
5155 | dwarf2_per_objfile = objfile_data (pst->objfile, | |
5156 | dwarf2_objfile_data_key); | |
5157 | ||
b2ab525c KB |
5158 | /* If this psymtab is constructed from a debug-only objfile, the |
5159 | has_section_at_zero flag will not necessarily be correct. We | |
5160 | can get the correct value for this flag by looking at the data | |
5161 | associated with the (presumably stripped) associated objfile. */ | |
5162 | if (pst->objfile->separate_debug_objfile_backlink) | |
5163 | { | |
5164 | struct dwarf2_per_objfile *dpo_backlink | |
5165 | = objfile_data (pst->objfile->separate_debug_objfile_backlink, | |
5166 | dwarf2_objfile_data_key); | |
9a619af0 | 5167 | |
b2ab525c KB |
5168 | dwarf2_per_objfile->has_section_at_zero |
5169 | = dpo_backlink->has_section_at_zero; | |
5170 | } | |
5171 | ||
98bfdba5 PA |
5172 | dwarf2_per_objfile->reading_partial_symbols = 0; |
5173 | ||
c906108c SS |
5174 | psymtab_to_symtab_1 (pst); |
5175 | ||
5176 | /* Finish up the debug error message. */ | |
5177 | if (info_verbose) | |
a3f17187 | 5178 | printf_filtered (_("done.\n")); |
c906108c SS |
5179 | } |
5180 | } | |
95554aad TT |
5181 | |
5182 | process_cu_includes (); | |
c906108c | 5183 | } |
9cdd5dbd DE |
5184 | \f |
5185 | /* Reading in full CUs. */ | |
c906108c | 5186 | |
10b3939b DJ |
5187 | /* Add PER_CU to the queue. */ |
5188 | ||
5189 | static void | |
95554aad TT |
5190 | queue_comp_unit (struct dwarf2_per_cu_data *per_cu, |
5191 | enum language pretend_language) | |
10b3939b DJ |
5192 | { |
5193 | struct dwarf2_queue_item *item; | |
5194 | ||
5195 | per_cu->queued = 1; | |
5196 | item = xmalloc (sizeof (*item)); | |
5197 | item->per_cu = per_cu; | |
95554aad | 5198 | item->pretend_language = pretend_language; |
10b3939b DJ |
5199 | item->next = NULL; |
5200 | ||
5201 | if (dwarf2_queue == NULL) | |
5202 | dwarf2_queue = item; | |
5203 | else | |
5204 | dwarf2_queue_tail->next = item; | |
5205 | ||
5206 | dwarf2_queue_tail = item; | |
5207 | } | |
5208 | ||
5209 | /* Process the queue. */ | |
5210 | ||
5211 | static void | |
a0f42c21 | 5212 | process_queue (void) |
10b3939b DJ |
5213 | { |
5214 | struct dwarf2_queue_item *item, *next_item; | |
5215 | ||
03dd20cc DJ |
5216 | /* The queue starts out with one item, but following a DIE reference |
5217 | may load a new CU, adding it to the end of the queue. */ | |
10b3939b DJ |
5218 | for (item = dwarf2_queue; item != NULL; dwarf2_queue = item = next_item) |
5219 | { | |
9291a0cd TT |
5220 | if (dwarf2_per_objfile->using_index |
5221 | ? !item->per_cu->v.quick->symtab | |
5222 | : (item->per_cu->v.psymtab && !item->per_cu->v.psymtab->readin)) | |
95554aad | 5223 | process_full_comp_unit (item->per_cu, item->pretend_language); |
10b3939b DJ |
5224 | |
5225 | item->per_cu->queued = 0; | |
5226 | next_item = item->next; | |
5227 | xfree (item); | |
5228 | } | |
5229 | ||
5230 | dwarf2_queue_tail = NULL; | |
5231 | } | |
5232 | ||
5233 | /* Free all allocated queue entries. This function only releases anything if | |
5234 | an error was thrown; if the queue was processed then it would have been | |
5235 | freed as we went along. */ | |
5236 | ||
5237 | static void | |
5238 | dwarf2_release_queue (void *dummy) | |
5239 | { | |
5240 | struct dwarf2_queue_item *item, *last; | |
5241 | ||
5242 | item = dwarf2_queue; | |
5243 | while (item) | |
5244 | { | |
5245 | /* Anything still marked queued is likely to be in an | |
5246 | inconsistent state, so discard it. */ | |
5247 | if (item->per_cu->queued) | |
5248 | { | |
5249 | if (item->per_cu->cu != NULL) | |
dee91e82 | 5250 | free_one_cached_comp_unit (item->per_cu); |
10b3939b DJ |
5251 | item->per_cu->queued = 0; |
5252 | } | |
5253 | ||
5254 | last = item; | |
5255 | item = item->next; | |
5256 | xfree (last); | |
5257 | } | |
5258 | ||
5259 | dwarf2_queue = dwarf2_queue_tail = NULL; | |
5260 | } | |
5261 | ||
5262 | /* Read in full symbols for PST, and anything it depends on. */ | |
5263 | ||
c906108c | 5264 | static void |
fba45db2 | 5265 | psymtab_to_symtab_1 (struct partial_symtab *pst) |
c906108c | 5266 | { |
10b3939b | 5267 | struct dwarf2_per_cu_data *per_cu; |
c906108c | 5268 | struct cleanup *back_to; |
aaa75496 JB |
5269 | int i; |
5270 | ||
95554aad TT |
5271 | if (pst->readin) |
5272 | return; | |
5273 | ||
aaa75496 | 5274 | for (i = 0; i < pst->number_of_dependencies; i++) |
95554aad TT |
5275 | if (!pst->dependencies[i]->readin |
5276 | && pst->dependencies[i]->user == NULL) | |
aaa75496 JB |
5277 | { |
5278 | /* Inform about additional files that need to be read in. */ | |
5279 | if (info_verbose) | |
5280 | { | |
a3f17187 | 5281 | /* FIXME: i18n: Need to make this a single string. */ |
aaa75496 JB |
5282 | fputs_filtered (" ", gdb_stdout); |
5283 | wrap_here (""); | |
5284 | fputs_filtered ("and ", gdb_stdout); | |
5285 | wrap_here (""); | |
5286 | printf_filtered ("%s...", pst->dependencies[i]->filename); | |
0963b4bd | 5287 | wrap_here (""); /* Flush output. */ |
aaa75496 JB |
5288 | gdb_flush (gdb_stdout); |
5289 | } | |
5290 | psymtab_to_symtab_1 (pst->dependencies[i]); | |
5291 | } | |
5292 | ||
e38df1d0 | 5293 | per_cu = pst->read_symtab_private; |
10b3939b DJ |
5294 | |
5295 | if (per_cu == NULL) | |
aaa75496 JB |
5296 | { |
5297 | /* It's an include file, no symbols to read for it. | |
5298 | Everything is in the parent symtab. */ | |
5299 | pst->readin = 1; | |
5300 | return; | |
5301 | } | |
c906108c | 5302 | |
a0f42c21 | 5303 | dw2_do_instantiate_symtab (per_cu); |
10b3939b DJ |
5304 | } |
5305 | ||
dee91e82 DE |
5306 | /* Trivial hash function for die_info: the hash value of a DIE |
5307 | is its offset in .debug_info for this objfile. */ | |
10b3939b | 5308 | |
dee91e82 DE |
5309 | static hashval_t |
5310 | die_hash (const void *item) | |
10b3939b | 5311 | { |
dee91e82 | 5312 | const struct die_info *die = item; |
6502dd73 | 5313 | |
dee91e82 DE |
5314 | return die->offset.sect_off; |
5315 | } | |
63d06c5c | 5316 | |
dee91e82 DE |
5317 | /* Trivial comparison function for die_info structures: two DIEs |
5318 | are equal if they have the same offset. */ | |
98bfdba5 | 5319 | |
dee91e82 DE |
5320 | static int |
5321 | die_eq (const void *item_lhs, const void *item_rhs) | |
5322 | { | |
5323 | const struct die_info *die_lhs = item_lhs; | |
5324 | const struct die_info *die_rhs = item_rhs; | |
c906108c | 5325 | |
dee91e82 DE |
5326 | return die_lhs->offset.sect_off == die_rhs->offset.sect_off; |
5327 | } | |
c906108c | 5328 | |
dee91e82 DE |
5329 | /* die_reader_func for load_full_comp_unit. |
5330 | This is identical to read_signatured_type_reader, | |
5331 | but is kept separate for now. */ | |
c906108c | 5332 | |
dee91e82 DE |
5333 | static void |
5334 | load_full_comp_unit_reader (const struct die_reader_specs *reader, | |
5335 | gdb_byte *info_ptr, | |
5336 | struct die_info *comp_unit_die, | |
5337 | int has_children, | |
5338 | void *data) | |
5339 | { | |
5340 | struct dwarf2_cu *cu = reader->cu; | |
5341 | struct attribute *attr; | |
95554aad | 5342 | enum language *language_ptr = data; |
6caca83c | 5343 | |
dee91e82 DE |
5344 | gdb_assert (cu->die_hash == NULL); |
5345 | cu->die_hash = | |
5346 | htab_create_alloc_ex (cu->header.length / 12, | |
5347 | die_hash, | |
5348 | die_eq, | |
5349 | NULL, | |
5350 | &cu->comp_unit_obstack, | |
5351 | hashtab_obstack_allocate, | |
5352 | dummy_obstack_deallocate); | |
e142c38c | 5353 | |
dee91e82 DE |
5354 | if (has_children) |
5355 | comp_unit_die->child = read_die_and_siblings (reader, info_ptr, | |
5356 | &info_ptr, comp_unit_die); | |
5357 | cu->dies = comp_unit_die; | |
5358 | /* comp_unit_die is not stored in die_hash, no need. */ | |
10b3939b DJ |
5359 | |
5360 | /* We try not to read any attributes in this function, because not | |
9cdd5dbd | 5361 | all CUs needed for references have been loaded yet, and symbol |
10b3939b | 5362 | table processing isn't initialized. But we have to set the CU language, |
dee91e82 DE |
5363 | or we won't be able to build types correctly. |
5364 | Similarly, if we do not read the producer, we can not apply | |
5365 | producer-specific interpretation. */ | |
95554aad | 5366 | prepare_one_comp_unit (cu, cu->dies, *language_ptr); |
dee91e82 | 5367 | } |
10b3939b | 5368 | |
dee91e82 | 5369 | /* Load the DIEs associated with PER_CU into memory. */ |
a6c727b2 | 5370 | |
dee91e82 | 5371 | static void |
95554aad TT |
5372 | load_full_comp_unit (struct dwarf2_per_cu_data *this_cu, |
5373 | enum language pretend_language) | |
dee91e82 | 5374 | { |
3019eac3 | 5375 | gdb_assert (! this_cu->is_debug_types); |
c5b7e1cb | 5376 | |
95554aad TT |
5377 | init_cutu_and_read_dies (this_cu, 1, 1, load_full_comp_unit_reader, |
5378 | &pretend_language); | |
10b3939b DJ |
5379 | } |
5380 | ||
3da10d80 KS |
5381 | /* Add a DIE to the delayed physname list. */ |
5382 | ||
5383 | static void | |
5384 | add_to_method_list (struct type *type, int fnfield_index, int index, | |
5385 | const char *name, struct die_info *die, | |
5386 | struct dwarf2_cu *cu) | |
5387 | { | |
5388 | struct delayed_method_info mi; | |
5389 | mi.type = type; | |
5390 | mi.fnfield_index = fnfield_index; | |
5391 | mi.index = index; | |
5392 | mi.name = name; | |
5393 | mi.die = die; | |
5394 | VEC_safe_push (delayed_method_info, cu->method_list, &mi); | |
5395 | } | |
5396 | ||
5397 | /* A cleanup for freeing the delayed method list. */ | |
5398 | ||
5399 | static void | |
5400 | free_delayed_list (void *ptr) | |
5401 | { | |
5402 | struct dwarf2_cu *cu = (struct dwarf2_cu *) ptr; | |
5403 | if (cu->method_list != NULL) | |
5404 | { | |
5405 | VEC_free (delayed_method_info, cu->method_list); | |
5406 | cu->method_list = NULL; | |
5407 | } | |
5408 | } | |
5409 | ||
5410 | /* Compute the physnames of any methods on the CU's method list. | |
5411 | ||
5412 | The computation of method physnames is delayed in order to avoid the | |
5413 | (bad) condition that one of the method's formal parameters is of an as yet | |
5414 | incomplete type. */ | |
5415 | ||
5416 | static void | |
5417 | compute_delayed_physnames (struct dwarf2_cu *cu) | |
5418 | { | |
5419 | int i; | |
5420 | struct delayed_method_info *mi; | |
5421 | for (i = 0; VEC_iterate (delayed_method_info, cu->method_list, i, mi) ; ++i) | |
5422 | { | |
1d06ead6 | 5423 | const char *physname; |
3da10d80 KS |
5424 | struct fn_fieldlist *fn_flp |
5425 | = &TYPE_FN_FIELDLIST (mi->type, mi->fnfield_index); | |
1d06ead6 | 5426 | physname = dwarf2_physname ((char *) mi->name, mi->die, cu); |
3da10d80 KS |
5427 | fn_flp->fn_fields[mi->index].physname = physname ? physname : ""; |
5428 | } | |
5429 | } | |
5430 | ||
a766d390 DE |
5431 | /* Go objects should be embedded in a DW_TAG_module DIE, |
5432 | and it's not clear if/how imported objects will appear. | |
5433 | To keep Go support simple until that's worked out, | |
5434 | go back through what we've read and create something usable. | |
5435 | We could do this while processing each DIE, and feels kinda cleaner, | |
5436 | but that way is more invasive. | |
5437 | This is to, for example, allow the user to type "p var" or "b main" | |
5438 | without having to specify the package name, and allow lookups | |
5439 | of module.object to work in contexts that use the expression | |
5440 | parser. */ | |
5441 | ||
5442 | static void | |
5443 | fixup_go_packaging (struct dwarf2_cu *cu) | |
5444 | { | |
5445 | char *package_name = NULL; | |
5446 | struct pending *list; | |
5447 | int i; | |
5448 | ||
5449 | for (list = global_symbols; list != NULL; list = list->next) | |
5450 | { | |
5451 | for (i = 0; i < list->nsyms; ++i) | |
5452 | { | |
5453 | struct symbol *sym = list->symbol[i]; | |
5454 | ||
5455 | if (SYMBOL_LANGUAGE (sym) == language_go | |
5456 | && SYMBOL_CLASS (sym) == LOC_BLOCK) | |
5457 | { | |
5458 | char *this_package_name = go_symbol_package_name (sym); | |
5459 | ||
5460 | if (this_package_name == NULL) | |
5461 | continue; | |
5462 | if (package_name == NULL) | |
5463 | package_name = this_package_name; | |
5464 | else | |
5465 | { | |
5466 | if (strcmp (package_name, this_package_name) != 0) | |
5467 | complaint (&symfile_complaints, | |
5468 | _("Symtab %s has objects from two different Go packages: %s and %s"), | |
5469 | (sym->symtab && sym->symtab->filename | |
5470 | ? sym->symtab->filename | |
5471 | : cu->objfile->name), | |
5472 | this_package_name, package_name); | |
5473 | xfree (this_package_name); | |
5474 | } | |
5475 | } | |
5476 | } | |
5477 | } | |
5478 | ||
5479 | if (package_name != NULL) | |
5480 | { | |
5481 | struct objfile *objfile = cu->objfile; | |
5482 | struct type *type = init_type (TYPE_CODE_MODULE, 0, 0, | |
5483 | package_name, objfile); | |
5484 | struct symbol *sym; | |
5485 | ||
5486 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
5487 | ||
5488 | sym = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct symbol); | |
5489 | SYMBOL_SET_LANGUAGE (sym, language_go); | |
5490 | SYMBOL_SET_NAMES (sym, package_name, strlen (package_name), 1, objfile); | |
5491 | /* This is not VAR_DOMAIN because we want a way to ensure a lookup of, | |
5492 | e.g., "main" finds the "main" module and not C's main(). */ | |
5493 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; | |
5494 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
5495 | SYMBOL_TYPE (sym) = type; | |
5496 | ||
5497 | add_symbol_to_list (sym, &global_symbols); | |
5498 | ||
5499 | xfree (package_name); | |
5500 | } | |
5501 | } | |
5502 | ||
95554aad TT |
5503 | static void compute_symtab_includes (struct dwarf2_per_cu_data *per_cu); |
5504 | ||
5505 | /* Return the symtab for PER_CU. This works properly regardless of | |
5506 | whether we're using the index or psymtabs. */ | |
5507 | ||
5508 | static struct symtab * | |
5509 | get_symtab (struct dwarf2_per_cu_data *per_cu) | |
5510 | { | |
5511 | return (dwarf2_per_objfile->using_index | |
5512 | ? per_cu->v.quick->symtab | |
5513 | : per_cu->v.psymtab->symtab); | |
5514 | } | |
5515 | ||
5516 | /* A helper function for computing the list of all symbol tables | |
5517 | included by PER_CU. */ | |
5518 | ||
5519 | static void | |
5520 | recursively_compute_inclusions (VEC (dwarf2_per_cu_ptr) **result, | |
5521 | htab_t all_children, | |
5522 | struct dwarf2_per_cu_data *per_cu) | |
5523 | { | |
5524 | void **slot; | |
5525 | int ix; | |
5526 | struct dwarf2_per_cu_data *iter; | |
5527 | ||
5528 | slot = htab_find_slot (all_children, per_cu, INSERT); | |
5529 | if (*slot != NULL) | |
5530 | { | |
5531 | /* This inclusion and its children have been processed. */ | |
5532 | return; | |
5533 | } | |
5534 | ||
5535 | *slot = per_cu; | |
5536 | /* Only add a CU if it has a symbol table. */ | |
5537 | if (get_symtab (per_cu) != NULL) | |
5538 | VEC_safe_push (dwarf2_per_cu_ptr, *result, per_cu); | |
5539 | ||
5540 | for (ix = 0; | |
5541 | VEC_iterate (dwarf2_per_cu_ptr, per_cu->imported_symtabs, ix, iter); | |
5542 | ++ix) | |
5543 | recursively_compute_inclusions (result, all_children, iter); | |
5544 | } | |
5545 | ||
5546 | /* Compute the symtab 'includes' fields for the symtab related to | |
5547 | PER_CU. */ | |
5548 | ||
5549 | static void | |
5550 | compute_symtab_includes (struct dwarf2_per_cu_data *per_cu) | |
5551 | { | |
5552 | if (!VEC_empty (dwarf2_per_cu_ptr, per_cu->imported_symtabs)) | |
5553 | { | |
5554 | int ix, len; | |
5555 | struct dwarf2_per_cu_data *iter; | |
5556 | VEC (dwarf2_per_cu_ptr) *result_children = NULL; | |
5557 | htab_t all_children; | |
5558 | struct symtab *symtab = get_symtab (per_cu); | |
5559 | ||
5560 | /* If we don't have a symtab, we can just skip this case. */ | |
5561 | if (symtab == NULL) | |
5562 | return; | |
5563 | ||
5564 | all_children = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, | |
5565 | NULL, xcalloc, xfree); | |
5566 | ||
5567 | for (ix = 0; | |
5568 | VEC_iterate (dwarf2_per_cu_ptr, per_cu->imported_symtabs, | |
5569 | ix, iter); | |
5570 | ++ix) | |
5571 | recursively_compute_inclusions (&result_children, all_children, iter); | |
5572 | ||
5573 | /* Now we have a transitive closure of all the included CUs, so | |
5574 | we can convert it to a list of symtabs. */ | |
5575 | len = VEC_length (dwarf2_per_cu_ptr, result_children); | |
5576 | symtab->includes | |
5577 | = obstack_alloc (&dwarf2_per_objfile->objfile->objfile_obstack, | |
5578 | (len + 1) * sizeof (struct symtab *)); | |
5579 | for (ix = 0; | |
5580 | VEC_iterate (dwarf2_per_cu_ptr, result_children, ix, iter); | |
5581 | ++ix) | |
5582 | symtab->includes[ix] = get_symtab (iter); | |
5583 | symtab->includes[len] = NULL; | |
5584 | ||
5585 | VEC_free (dwarf2_per_cu_ptr, result_children); | |
5586 | htab_delete (all_children); | |
5587 | } | |
5588 | } | |
5589 | ||
5590 | /* Compute the 'includes' field for the symtabs of all the CUs we just | |
5591 | read. */ | |
5592 | ||
5593 | static void | |
5594 | process_cu_includes (void) | |
5595 | { | |
5596 | int ix; | |
5597 | struct dwarf2_per_cu_data *iter; | |
5598 | ||
5599 | for (ix = 0; | |
5600 | VEC_iterate (dwarf2_per_cu_ptr, dwarf2_per_objfile->just_read_cus, | |
5601 | ix, iter); | |
5602 | ++ix) | |
5603 | compute_symtab_includes (iter); | |
5604 | ||
5605 | VEC_free (dwarf2_per_cu_ptr, dwarf2_per_objfile->just_read_cus); | |
5606 | } | |
5607 | ||
9cdd5dbd | 5608 | /* Generate full symbol information for PER_CU, whose DIEs have |
10b3939b DJ |
5609 | already been loaded into memory. */ |
5610 | ||
5611 | static void | |
95554aad TT |
5612 | process_full_comp_unit (struct dwarf2_per_cu_data *per_cu, |
5613 | enum language pretend_language) | |
10b3939b | 5614 | { |
10b3939b | 5615 | struct dwarf2_cu *cu = per_cu->cu; |
9291a0cd | 5616 | struct objfile *objfile = per_cu->objfile; |
10b3939b DJ |
5617 | CORE_ADDR lowpc, highpc; |
5618 | struct symtab *symtab; | |
3da10d80 | 5619 | struct cleanup *back_to, *delayed_list_cleanup; |
10b3939b DJ |
5620 | CORE_ADDR baseaddr; |
5621 | ||
5622 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
5623 | ||
10b3939b DJ |
5624 | buildsym_init (); |
5625 | back_to = make_cleanup (really_free_pendings, NULL); | |
3da10d80 | 5626 | delayed_list_cleanup = make_cleanup (free_delayed_list, cu); |
10b3939b DJ |
5627 | |
5628 | cu->list_in_scope = &file_symbols; | |
c906108c | 5629 | |
95554aad TT |
5630 | cu->language = pretend_language; |
5631 | cu->language_defn = language_def (cu->language); | |
5632 | ||
c906108c | 5633 | /* Do line number decoding in read_file_scope () */ |
10b3939b | 5634 | process_die (cu->dies, cu); |
c906108c | 5635 | |
a766d390 DE |
5636 | /* For now fudge the Go package. */ |
5637 | if (cu->language == language_go) | |
5638 | fixup_go_packaging (cu); | |
5639 | ||
3da10d80 KS |
5640 | /* Now that we have processed all the DIEs in the CU, all the types |
5641 | should be complete, and it should now be safe to compute all of the | |
5642 | physnames. */ | |
5643 | compute_delayed_physnames (cu); | |
5644 | do_cleanups (delayed_list_cleanup); | |
5645 | ||
fae299cd DC |
5646 | /* Some compilers don't define a DW_AT_high_pc attribute for the |
5647 | compilation unit. If the DW_AT_high_pc is missing, synthesize | |
5648 | it, by scanning the DIE's below the compilation unit. */ | |
10b3939b | 5649 | get_scope_pc_bounds (cu->dies, &lowpc, &highpc, cu); |
c906108c | 5650 | |
613e1657 | 5651 | symtab = end_symtab (highpc + baseaddr, objfile, SECT_OFF_TEXT (objfile)); |
c906108c | 5652 | |
8be455d7 | 5653 | if (symtab != NULL) |
c906108c | 5654 | { |
df15bd07 | 5655 | int gcc_4_minor = producer_is_gcc_ge_4 (cu->producer); |
4632c0d0 | 5656 | |
8be455d7 JK |
5657 | /* Set symtab language to language from DW_AT_language. If the |
5658 | compilation is from a C file generated by language preprocessors, do | |
5659 | not set the language if it was already deduced by start_subfile. */ | |
5660 | if (!(cu->language == language_c && symtab->language != language_c)) | |
5661 | symtab->language = cu->language; | |
5662 | ||
5663 | /* GCC-4.0 has started to support -fvar-tracking. GCC-3.x still can | |
5664 | produce DW_AT_location with location lists but it can be possibly | |
ab260dad JK |
5665 | invalid without -fvar-tracking. Still up to GCC-4.4.x incl. 4.4.0 |
5666 | there were bugs in prologue debug info, fixed later in GCC-4.5 | |
5667 | by "unwind info for epilogues" patch (which is not directly related). | |
8be455d7 JK |
5668 | |
5669 | For -gdwarf-4 type units LOCATIONS_VALID indication is fortunately not | |
5670 | needed, it would be wrong due to missing DW_AT_producer there. | |
5671 | ||
5672 | Still one can confuse GDB by using non-standard GCC compilation | |
5673 | options - this waits on GCC PR other/32998 (-frecord-gcc-switches). | |
5674 | */ | |
ab260dad | 5675 | if (cu->has_loclist && gcc_4_minor >= 5) |
8be455d7 | 5676 | symtab->locations_valid = 1; |
e0d00bc7 JK |
5677 | |
5678 | if (gcc_4_minor >= 5) | |
5679 | symtab->epilogue_unwind_valid = 1; | |
96408a79 SA |
5680 | |
5681 | symtab->call_site_htab = cu->call_site_htab; | |
c906108c | 5682 | } |
9291a0cd TT |
5683 | |
5684 | if (dwarf2_per_objfile->using_index) | |
5685 | per_cu->v.quick->symtab = symtab; | |
5686 | else | |
5687 | { | |
5688 | struct partial_symtab *pst = per_cu->v.psymtab; | |
5689 | pst->symtab = symtab; | |
5690 | pst->readin = 1; | |
5691 | } | |
c906108c | 5692 | |
95554aad TT |
5693 | /* Push it for inclusion processing later. */ |
5694 | VEC_safe_push (dwarf2_per_cu_ptr, dwarf2_per_objfile->just_read_cus, per_cu); | |
5695 | ||
c906108c SS |
5696 | do_cleanups (back_to); |
5697 | } | |
5698 | ||
95554aad TT |
5699 | /* Process an imported unit DIE. */ |
5700 | ||
5701 | static void | |
5702 | process_imported_unit_die (struct die_info *die, struct dwarf2_cu *cu) | |
5703 | { | |
5704 | struct attribute *attr; | |
5705 | ||
5706 | attr = dwarf2_attr (die, DW_AT_import, cu); | |
5707 | if (attr != NULL) | |
5708 | { | |
5709 | struct dwarf2_per_cu_data *per_cu; | |
5710 | struct symtab *imported_symtab; | |
5711 | sect_offset offset; | |
5712 | ||
5713 | offset = dwarf2_get_ref_die_offset (attr); | |
5714 | per_cu = dwarf2_find_containing_comp_unit (offset, cu->objfile); | |
5715 | ||
5716 | /* Queue the unit, if needed. */ | |
5717 | if (maybe_queue_comp_unit (cu, per_cu, cu->language)) | |
5718 | load_full_comp_unit (per_cu, cu->language); | |
5719 | ||
5720 | VEC_safe_push (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs, | |
5721 | per_cu); | |
5722 | } | |
5723 | } | |
5724 | ||
c906108c SS |
5725 | /* Process a die and its children. */ |
5726 | ||
5727 | static void | |
e7c27a73 | 5728 | process_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
5729 | { |
5730 | switch (die->tag) | |
5731 | { | |
5732 | case DW_TAG_padding: | |
5733 | break; | |
5734 | case DW_TAG_compile_unit: | |
95554aad | 5735 | case DW_TAG_partial_unit: |
e7c27a73 | 5736 | read_file_scope (die, cu); |
c906108c | 5737 | break; |
348e048f DE |
5738 | case DW_TAG_type_unit: |
5739 | read_type_unit_scope (die, cu); | |
5740 | break; | |
c906108c | 5741 | case DW_TAG_subprogram: |
c906108c | 5742 | case DW_TAG_inlined_subroutine: |
edb3359d | 5743 | read_func_scope (die, cu); |
c906108c SS |
5744 | break; |
5745 | case DW_TAG_lexical_block: | |
14898363 L |
5746 | case DW_TAG_try_block: |
5747 | case DW_TAG_catch_block: | |
e7c27a73 | 5748 | read_lexical_block_scope (die, cu); |
c906108c | 5749 | break; |
96408a79 SA |
5750 | case DW_TAG_GNU_call_site: |
5751 | read_call_site_scope (die, cu); | |
5752 | break; | |
c906108c | 5753 | case DW_TAG_class_type: |
680b30c7 | 5754 | case DW_TAG_interface_type: |
c906108c SS |
5755 | case DW_TAG_structure_type: |
5756 | case DW_TAG_union_type: | |
134d01f1 | 5757 | process_structure_scope (die, cu); |
c906108c SS |
5758 | break; |
5759 | case DW_TAG_enumeration_type: | |
134d01f1 | 5760 | process_enumeration_scope (die, cu); |
c906108c | 5761 | break; |
134d01f1 | 5762 | |
f792889a DJ |
5763 | /* These dies have a type, but processing them does not create |
5764 | a symbol or recurse to process the children. Therefore we can | |
5765 | read them on-demand through read_type_die. */ | |
c906108c | 5766 | case DW_TAG_subroutine_type: |
72019c9c | 5767 | case DW_TAG_set_type: |
c906108c | 5768 | case DW_TAG_array_type: |
c906108c | 5769 | case DW_TAG_pointer_type: |
c906108c | 5770 | case DW_TAG_ptr_to_member_type: |
c906108c | 5771 | case DW_TAG_reference_type: |
c906108c | 5772 | case DW_TAG_string_type: |
c906108c | 5773 | break; |
134d01f1 | 5774 | |
c906108c | 5775 | case DW_TAG_base_type: |
a02abb62 | 5776 | case DW_TAG_subrange_type: |
cb249c71 | 5777 | case DW_TAG_typedef: |
134d01f1 DJ |
5778 | /* Add a typedef symbol for the type definition, if it has a |
5779 | DW_AT_name. */ | |
f792889a | 5780 | new_symbol (die, read_type_die (die, cu), cu); |
a02abb62 | 5781 | break; |
c906108c | 5782 | case DW_TAG_common_block: |
e7c27a73 | 5783 | read_common_block (die, cu); |
c906108c SS |
5784 | break; |
5785 | case DW_TAG_common_inclusion: | |
5786 | break; | |
d9fa45fe | 5787 | case DW_TAG_namespace: |
63d06c5c | 5788 | processing_has_namespace_info = 1; |
e7c27a73 | 5789 | read_namespace (die, cu); |
d9fa45fe | 5790 | break; |
5d7cb8df | 5791 | case DW_TAG_module: |
f55ee35c | 5792 | processing_has_namespace_info = 1; |
5d7cb8df JK |
5793 | read_module (die, cu); |
5794 | break; | |
d9fa45fe DC |
5795 | case DW_TAG_imported_declaration: |
5796 | case DW_TAG_imported_module: | |
63d06c5c | 5797 | processing_has_namespace_info = 1; |
27aa8d6a SW |
5798 | if (die->child != NULL && (die->tag == DW_TAG_imported_declaration |
5799 | || cu->language != language_fortran)) | |
5800 | complaint (&symfile_complaints, _("Tag '%s' has unexpected children"), | |
5801 | dwarf_tag_name (die->tag)); | |
5802 | read_import_statement (die, cu); | |
d9fa45fe | 5803 | break; |
95554aad TT |
5804 | |
5805 | case DW_TAG_imported_unit: | |
5806 | process_imported_unit_die (die, cu); | |
5807 | break; | |
5808 | ||
c906108c | 5809 | default: |
e7c27a73 | 5810 | new_symbol (die, NULL, cu); |
c906108c SS |
5811 | break; |
5812 | } | |
5813 | } | |
5814 | ||
94af9270 KS |
5815 | /* A helper function for dwarf2_compute_name which determines whether DIE |
5816 | needs to have the name of the scope prepended to the name listed in the | |
5817 | die. */ | |
5818 | ||
5819 | static int | |
5820 | die_needs_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
5821 | { | |
1c809c68 TT |
5822 | struct attribute *attr; |
5823 | ||
94af9270 KS |
5824 | switch (die->tag) |
5825 | { | |
5826 | case DW_TAG_namespace: | |
5827 | case DW_TAG_typedef: | |
5828 | case DW_TAG_class_type: | |
5829 | case DW_TAG_interface_type: | |
5830 | case DW_TAG_structure_type: | |
5831 | case DW_TAG_union_type: | |
5832 | case DW_TAG_enumeration_type: | |
5833 | case DW_TAG_enumerator: | |
5834 | case DW_TAG_subprogram: | |
5835 | case DW_TAG_member: | |
5836 | return 1; | |
5837 | ||
5838 | case DW_TAG_variable: | |
c2b0a229 | 5839 | case DW_TAG_constant: |
94af9270 KS |
5840 | /* We only need to prefix "globally" visible variables. These include |
5841 | any variable marked with DW_AT_external or any variable that | |
5842 | lives in a namespace. [Variables in anonymous namespaces | |
5843 | require prefixing, but they are not DW_AT_external.] */ | |
5844 | ||
5845 | if (dwarf2_attr (die, DW_AT_specification, cu)) | |
5846 | { | |
5847 | struct dwarf2_cu *spec_cu = cu; | |
9a619af0 | 5848 | |
94af9270 KS |
5849 | return die_needs_namespace (die_specification (die, &spec_cu), |
5850 | spec_cu); | |
5851 | } | |
5852 | ||
1c809c68 | 5853 | attr = dwarf2_attr (die, DW_AT_external, cu); |
f55ee35c JK |
5854 | if (attr == NULL && die->parent->tag != DW_TAG_namespace |
5855 | && die->parent->tag != DW_TAG_module) | |
1c809c68 TT |
5856 | return 0; |
5857 | /* A variable in a lexical block of some kind does not need a | |
5858 | namespace, even though in C++ such variables may be external | |
5859 | and have a mangled name. */ | |
5860 | if (die->parent->tag == DW_TAG_lexical_block | |
5861 | || die->parent->tag == DW_TAG_try_block | |
1054b214 TT |
5862 | || die->parent->tag == DW_TAG_catch_block |
5863 | || die->parent->tag == DW_TAG_subprogram) | |
1c809c68 TT |
5864 | return 0; |
5865 | return 1; | |
94af9270 KS |
5866 | |
5867 | default: | |
5868 | return 0; | |
5869 | } | |
5870 | } | |
5871 | ||
98bfdba5 PA |
5872 | /* Retrieve the last character from a mem_file. */ |
5873 | ||
5874 | static void | |
5875 | do_ui_file_peek_last (void *object, const char *buffer, long length) | |
5876 | { | |
5877 | char *last_char_p = (char *) object; | |
5878 | ||
5879 | if (length > 0) | |
5880 | *last_char_p = buffer[length - 1]; | |
5881 | } | |
5882 | ||
94af9270 | 5883 | /* Compute the fully qualified name of DIE in CU. If PHYSNAME is nonzero, |
a766d390 DE |
5884 | compute the physname for the object, which include a method's: |
5885 | - formal parameters (C++/Java), | |
5886 | - receiver type (Go), | |
5887 | - return type (Java). | |
5888 | ||
5889 | The term "physname" is a bit confusing. | |
5890 | For C++, for example, it is the demangled name. | |
5891 | For Go, for example, it's the mangled name. | |
94af9270 | 5892 | |
af6b7be1 JB |
5893 | For Ada, return the DIE's linkage name rather than the fully qualified |
5894 | name. PHYSNAME is ignored.. | |
5895 | ||
94af9270 KS |
5896 | The result is allocated on the objfile_obstack and canonicalized. */ |
5897 | ||
5898 | static const char * | |
5899 | dwarf2_compute_name (char *name, struct die_info *die, struct dwarf2_cu *cu, | |
5900 | int physname) | |
5901 | { | |
bb5ed363 DE |
5902 | struct objfile *objfile = cu->objfile; |
5903 | ||
94af9270 KS |
5904 | if (name == NULL) |
5905 | name = dwarf2_name (die, cu); | |
5906 | ||
f55ee35c JK |
5907 | /* For Fortran GDB prefers DW_AT_*linkage_name if present but otherwise |
5908 | compute it by typename_concat inside GDB. */ | |
5909 | if (cu->language == language_ada | |
5910 | || (cu->language == language_fortran && physname)) | |
5911 | { | |
5912 | /* For Ada unit, we prefer the linkage name over the name, as | |
5913 | the former contains the exported name, which the user expects | |
5914 | to be able to reference. Ideally, we want the user to be able | |
5915 | to reference this entity using either natural or linkage name, | |
5916 | but we haven't started looking at this enhancement yet. */ | |
5917 | struct attribute *attr; | |
5918 | ||
5919 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
5920 | if (attr == NULL) | |
5921 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
5922 | if (attr && DW_STRING (attr)) | |
5923 | return DW_STRING (attr); | |
5924 | } | |
5925 | ||
94af9270 KS |
5926 | /* These are the only languages we know how to qualify names in. */ |
5927 | if (name != NULL | |
f55ee35c JK |
5928 | && (cu->language == language_cplus || cu->language == language_java |
5929 | || cu->language == language_fortran)) | |
94af9270 KS |
5930 | { |
5931 | if (die_needs_namespace (die, cu)) | |
5932 | { | |
5933 | long length; | |
0d5cff50 | 5934 | const char *prefix; |
94af9270 KS |
5935 | struct ui_file *buf; |
5936 | ||
5937 | prefix = determine_prefix (die, cu); | |
5938 | buf = mem_fileopen (); | |
5939 | if (*prefix != '\0') | |
5940 | { | |
f55ee35c JK |
5941 | char *prefixed_name = typename_concat (NULL, prefix, name, |
5942 | physname, cu); | |
9a619af0 | 5943 | |
94af9270 KS |
5944 | fputs_unfiltered (prefixed_name, buf); |
5945 | xfree (prefixed_name); | |
5946 | } | |
5947 | else | |
62d5b8da | 5948 | fputs_unfiltered (name, buf); |
94af9270 | 5949 | |
98bfdba5 PA |
5950 | /* Template parameters may be specified in the DIE's DW_AT_name, or |
5951 | as children with DW_TAG_template_type_param or | |
5952 | DW_TAG_value_type_param. If the latter, add them to the name | |
5953 | here. If the name already has template parameters, then | |
5954 | skip this step; some versions of GCC emit both, and | |
5955 | it is more efficient to use the pre-computed name. | |
5956 | ||
5957 | Something to keep in mind about this process: it is very | |
5958 | unlikely, or in some cases downright impossible, to produce | |
5959 | something that will match the mangled name of a function. | |
5960 | If the definition of the function has the same debug info, | |
5961 | we should be able to match up with it anyway. But fallbacks | |
5962 | using the minimal symbol, for instance to find a method | |
5963 | implemented in a stripped copy of libstdc++, will not work. | |
5964 | If we do not have debug info for the definition, we will have to | |
5965 | match them up some other way. | |
5966 | ||
5967 | When we do name matching there is a related problem with function | |
5968 | templates; two instantiated function templates are allowed to | |
5969 | differ only by their return types, which we do not add here. */ | |
5970 | ||
5971 | if (cu->language == language_cplus && strchr (name, '<') == NULL) | |
5972 | { | |
5973 | struct attribute *attr; | |
5974 | struct die_info *child; | |
5975 | int first = 1; | |
5976 | ||
5977 | die->building_fullname = 1; | |
5978 | ||
5979 | for (child = die->child; child != NULL; child = child->sibling) | |
5980 | { | |
5981 | struct type *type; | |
12df843f | 5982 | LONGEST value; |
98bfdba5 PA |
5983 | gdb_byte *bytes; |
5984 | struct dwarf2_locexpr_baton *baton; | |
5985 | struct value *v; | |
5986 | ||
5987 | if (child->tag != DW_TAG_template_type_param | |
5988 | && child->tag != DW_TAG_template_value_param) | |
5989 | continue; | |
5990 | ||
5991 | if (first) | |
5992 | { | |
5993 | fputs_unfiltered ("<", buf); | |
5994 | first = 0; | |
5995 | } | |
5996 | else | |
5997 | fputs_unfiltered (", ", buf); | |
5998 | ||
5999 | attr = dwarf2_attr (child, DW_AT_type, cu); | |
6000 | if (attr == NULL) | |
6001 | { | |
6002 | complaint (&symfile_complaints, | |
6003 | _("template parameter missing DW_AT_type")); | |
6004 | fputs_unfiltered ("UNKNOWN_TYPE", buf); | |
6005 | continue; | |
6006 | } | |
6007 | type = die_type (child, cu); | |
6008 | ||
6009 | if (child->tag == DW_TAG_template_type_param) | |
6010 | { | |
6011 | c_print_type (type, "", buf, -1, 0); | |
6012 | continue; | |
6013 | } | |
6014 | ||
6015 | attr = dwarf2_attr (child, DW_AT_const_value, cu); | |
6016 | if (attr == NULL) | |
6017 | { | |
6018 | complaint (&symfile_complaints, | |
3e43a32a MS |
6019 | _("template parameter missing " |
6020 | "DW_AT_const_value")); | |
98bfdba5 PA |
6021 | fputs_unfiltered ("UNKNOWN_VALUE", buf); |
6022 | continue; | |
6023 | } | |
6024 | ||
6025 | dwarf2_const_value_attr (attr, type, name, | |
6026 | &cu->comp_unit_obstack, cu, | |
6027 | &value, &bytes, &baton); | |
6028 | ||
6029 | if (TYPE_NOSIGN (type)) | |
6030 | /* GDB prints characters as NUMBER 'CHAR'. If that's | |
6031 | changed, this can use value_print instead. */ | |
6032 | c_printchar (value, type, buf); | |
6033 | else | |
6034 | { | |
6035 | struct value_print_options opts; | |
6036 | ||
6037 | if (baton != NULL) | |
6038 | v = dwarf2_evaluate_loc_desc (type, NULL, | |
6039 | baton->data, | |
6040 | baton->size, | |
6041 | baton->per_cu); | |
6042 | else if (bytes != NULL) | |
6043 | { | |
6044 | v = allocate_value (type); | |
6045 | memcpy (value_contents_writeable (v), bytes, | |
6046 | TYPE_LENGTH (type)); | |
6047 | } | |
6048 | else | |
6049 | v = value_from_longest (type, value); | |
6050 | ||
3e43a32a MS |
6051 | /* Specify decimal so that we do not depend on |
6052 | the radix. */ | |
98bfdba5 PA |
6053 | get_formatted_print_options (&opts, 'd'); |
6054 | opts.raw = 1; | |
6055 | value_print (v, buf, &opts); | |
6056 | release_value (v); | |
6057 | value_free (v); | |
6058 | } | |
6059 | } | |
6060 | ||
6061 | die->building_fullname = 0; | |
6062 | ||
6063 | if (!first) | |
6064 | { | |
6065 | /* Close the argument list, with a space if necessary | |
6066 | (nested templates). */ | |
6067 | char last_char = '\0'; | |
6068 | ui_file_put (buf, do_ui_file_peek_last, &last_char); | |
6069 | if (last_char == '>') | |
6070 | fputs_unfiltered (" >", buf); | |
6071 | else | |
6072 | fputs_unfiltered (">", buf); | |
6073 | } | |
6074 | } | |
6075 | ||
94af9270 KS |
6076 | /* For Java and C++ methods, append formal parameter type |
6077 | information, if PHYSNAME. */ | |
6e70227d | 6078 | |
94af9270 KS |
6079 | if (physname && die->tag == DW_TAG_subprogram |
6080 | && (cu->language == language_cplus | |
6081 | || cu->language == language_java)) | |
6082 | { | |
6083 | struct type *type = read_type_die (die, cu); | |
6084 | ||
3167638f | 6085 | c_type_print_args (type, buf, 1, cu->language); |
94af9270 KS |
6086 | |
6087 | if (cu->language == language_java) | |
6088 | { | |
6089 | /* For java, we must append the return type to method | |
0963b4bd | 6090 | names. */ |
94af9270 KS |
6091 | if (die->tag == DW_TAG_subprogram) |
6092 | java_print_type (TYPE_TARGET_TYPE (type), "", buf, | |
6093 | 0, 0); | |
6094 | } | |
6095 | else if (cu->language == language_cplus) | |
6096 | { | |
60430eff DJ |
6097 | /* Assume that an artificial first parameter is |
6098 | "this", but do not crash if it is not. RealView | |
6099 | marks unnamed (and thus unused) parameters as | |
6100 | artificial; there is no way to differentiate | |
6101 | the two cases. */ | |
94af9270 KS |
6102 | if (TYPE_NFIELDS (type) > 0 |
6103 | && TYPE_FIELD_ARTIFICIAL (type, 0) | |
60430eff | 6104 | && TYPE_CODE (TYPE_FIELD_TYPE (type, 0)) == TYPE_CODE_PTR |
3e43a32a MS |
6105 | && TYPE_CONST (TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, |
6106 | 0)))) | |
94af9270 KS |
6107 | fputs_unfiltered (" const", buf); |
6108 | } | |
6109 | } | |
6110 | ||
bb5ed363 | 6111 | name = ui_file_obsavestring (buf, &objfile->objfile_obstack, |
94af9270 KS |
6112 | &length); |
6113 | ui_file_delete (buf); | |
6114 | ||
6115 | if (cu->language == language_cplus) | |
6116 | { | |
6117 | char *cname | |
6118 | = dwarf2_canonicalize_name (name, cu, | |
bb5ed363 | 6119 | &objfile->objfile_obstack); |
9a619af0 | 6120 | |
94af9270 KS |
6121 | if (cname != NULL) |
6122 | name = cname; | |
6123 | } | |
6124 | } | |
6125 | } | |
6126 | ||
6127 | return name; | |
6128 | } | |
6129 | ||
0114d602 DJ |
6130 | /* Return the fully qualified name of DIE, based on its DW_AT_name. |
6131 | If scope qualifiers are appropriate they will be added. The result | |
6132 | will be allocated on the objfile_obstack, or NULL if the DIE does | |
94af9270 KS |
6133 | not have a name. NAME may either be from a previous call to |
6134 | dwarf2_name or NULL. | |
6135 | ||
0963b4bd | 6136 | The output string will be canonicalized (if C++/Java). */ |
0114d602 DJ |
6137 | |
6138 | static const char * | |
94af9270 | 6139 | dwarf2_full_name (char *name, struct die_info *die, struct dwarf2_cu *cu) |
0114d602 | 6140 | { |
94af9270 KS |
6141 | return dwarf2_compute_name (name, die, cu, 0); |
6142 | } | |
0114d602 | 6143 | |
94af9270 KS |
6144 | /* Construct a physname for the given DIE in CU. NAME may either be |
6145 | from a previous call to dwarf2_name or NULL. The result will be | |
6146 | allocated on the objfile_objstack or NULL if the DIE does not have a | |
6147 | name. | |
0114d602 | 6148 | |
94af9270 | 6149 | The output string will be canonicalized (if C++/Java). */ |
0114d602 | 6150 | |
94af9270 KS |
6151 | static const char * |
6152 | dwarf2_physname (char *name, struct die_info *die, struct dwarf2_cu *cu) | |
6153 | { | |
bb5ed363 | 6154 | struct objfile *objfile = cu->objfile; |
900e11f9 JK |
6155 | struct attribute *attr; |
6156 | const char *retval, *mangled = NULL, *canon = NULL; | |
6157 | struct cleanup *back_to; | |
6158 | int need_copy = 1; | |
6159 | ||
6160 | /* In this case dwarf2_compute_name is just a shortcut not building anything | |
6161 | on its own. */ | |
6162 | if (!die_needs_namespace (die, cu)) | |
6163 | return dwarf2_compute_name (name, die, cu, 1); | |
6164 | ||
6165 | back_to = make_cleanup (null_cleanup, NULL); | |
6166 | ||
6167 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
6168 | if (!attr) | |
6169 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
6170 | ||
6171 | /* DW_AT_linkage_name is missing in some cases - depend on what GDB | |
6172 | has computed. */ | |
6173 | if (attr && DW_STRING (attr)) | |
6174 | { | |
6175 | char *demangled; | |
6176 | ||
6177 | mangled = DW_STRING (attr); | |
6178 | ||
6179 | /* Use DMGL_RET_DROP for C++ template functions to suppress their return | |
6180 | type. It is easier for GDB users to search for such functions as | |
6181 | `name(params)' than `long name(params)'. In such case the minimal | |
6182 | symbol names do not match the full symbol names but for template | |
6183 | functions there is never a need to look up their definition from their | |
6184 | declaration so the only disadvantage remains the minimal symbol | |
6185 | variant `long name(params)' does not have the proper inferior type. | |
6186 | */ | |
6187 | ||
a766d390 DE |
6188 | if (cu->language == language_go) |
6189 | { | |
6190 | /* This is a lie, but we already lie to the caller new_symbol_full. | |
6191 | new_symbol_full assumes we return the mangled name. | |
6192 | This just undoes that lie until things are cleaned up. */ | |
6193 | demangled = NULL; | |
6194 | } | |
6195 | else | |
6196 | { | |
6197 | demangled = cplus_demangle (mangled, | |
6198 | (DMGL_PARAMS | DMGL_ANSI | |
6199 | | (cu->language == language_java | |
6200 | ? DMGL_JAVA | DMGL_RET_POSTFIX | |
6201 | : DMGL_RET_DROP))); | |
6202 | } | |
900e11f9 JK |
6203 | if (demangled) |
6204 | { | |
6205 | make_cleanup (xfree, demangled); | |
6206 | canon = demangled; | |
6207 | } | |
6208 | else | |
6209 | { | |
6210 | canon = mangled; | |
6211 | need_copy = 0; | |
6212 | } | |
6213 | } | |
6214 | ||
6215 | if (canon == NULL || check_physname) | |
6216 | { | |
6217 | const char *physname = dwarf2_compute_name (name, die, cu, 1); | |
6218 | ||
6219 | if (canon != NULL && strcmp (physname, canon) != 0) | |
6220 | { | |
6221 | /* It may not mean a bug in GDB. The compiler could also | |
6222 | compute DW_AT_linkage_name incorrectly. But in such case | |
6223 | GDB would need to be bug-to-bug compatible. */ | |
6224 | ||
6225 | complaint (&symfile_complaints, | |
6226 | _("Computed physname <%s> does not match demangled <%s> " | |
6227 | "(from linkage <%s>) - DIE at 0x%x [in module %s]"), | |
b64f50a1 | 6228 | physname, canon, mangled, die->offset.sect_off, objfile->name); |
900e11f9 JK |
6229 | |
6230 | /* Prefer DW_AT_linkage_name (in the CANON form) - when it | |
6231 | is available here - over computed PHYSNAME. It is safer | |
6232 | against both buggy GDB and buggy compilers. */ | |
6233 | ||
6234 | retval = canon; | |
6235 | } | |
6236 | else | |
6237 | { | |
6238 | retval = physname; | |
6239 | need_copy = 0; | |
6240 | } | |
6241 | } | |
6242 | else | |
6243 | retval = canon; | |
6244 | ||
6245 | if (need_copy) | |
6246 | retval = obsavestring (retval, strlen (retval), | |
bb5ed363 | 6247 | &objfile->objfile_obstack); |
900e11f9 JK |
6248 | |
6249 | do_cleanups (back_to); | |
6250 | return retval; | |
0114d602 DJ |
6251 | } |
6252 | ||
27aa8d6a SW |
6253 | /* Read the import statement specified by the given die and record it. */ |
6254 | ||
6255 | static void | |
6256 | read_import_statement (struct die_info *die, struct dwarf2_cu *cu) | |
6257 | { | |
bb5ed363 | 6258 | struct objfile *objfile = cu->objfile; |
27aa8d6a | 6259 | struct attribute *import_attr; |
32019081 | 6260 | struct die_info *imported_die, *child_die; |
de4affc9 | 6261 | struct dwarf2_cu *imported_cu; |
27aa8d6a | 6262 | const char *imported_name; |
794684b6 | 6263 | const char *imported_name_prefix; |
13387711 SW |
6264 | const char *canonical_name; |
6265 | const char *import_alias; | |
6266 | const char *imported_declaration = NULL; | |
794684b6 | 6267 | const char *import_prefix; |
32019081 JK |
6268 | VEC (const_char_ptr) *excludes = NULL; |
6269 | struct cleanup *cleanups; | |
13387711 SW |
6270 | |
6271 | char *temp; | |
27aa8d6a SW |
6272 | |
6273 | import_attr = dwarf2_attr (die, DW_AT_import, cu); | |
6274 | if (import_attr == NULL) | |
6275 | { | |
6276 | complaint (&symfile_complaints, _("Tag '%s' has no DW_AT_import"), | |
6277 | dwarf_tag_name (die->tag)); | |
6278 | return; | |
6279 | } | |
6280 | ||
de4affc9 CC |
6281 | imported_cu = cu; |
6282 | imported_die = follow_die_ref_or_sig (die, import_attr, &imported_cu); | |
6283 | imported_name = dwarf2_name (imported_die, imported_cu); | |
27aa8d6a SW |
6284 | if (imported_name == NULL) |
6285 | { | |
6286 | /* GCC bug: https://bugzilla.redhat.com/show_bug.cgi?id=506524 | |
6287 | ||
6288 | The import in the following code: | |
6289 | namespace A | |
6290 | { | |
6291 | typedef int B; | |
6292 | } | |
6293 | ||
6294 | int main () | |
6295 | { | |
6296 | using A::B; | |
6297 | B b; | |
6298 | return b; | |
6299 | } | |
6300 | ||
6301 | ... | |
6302 | <2><51>: Abbrev Number: 3 (DW_TAG_imported_declaration) | |
6303 | <52> DW_AT_decl_file : 1 | |
6304 | <53> DW_AT_decl_line : 6 | |
6305 | <54> DW_AT_import : <0x75> | |
6306 | <2><58>: Abbrev Number: 4 (DW_TAG_typedef) | |
6307 | <59> DW_AT_name : B | |
6308 | <5b> DW_AT_decl_file : 1 | |
6309 | <5c> DW_AT_decl_line : 2 | |
6310 | <5d> DW_AT_type : <0x6e> | |
6311 | ... | |
6312 | <1><75>: Abbrev Number: 7 (DW_TAG_base_type) | |
6313 | <76> DW_AT_byte_size : 4 | |
6314 | <77> DW_AT_encoding : 5 (signed) | |
6315 | ||
6316 | imports the wrong die ( 0x75 instead of 0x58 ). | |
6317 | This case will be ignored until the gcc bug is fixed. */ | |
6318 | return; | |
6319 | } | |
6320 | ||
82856980 SW |
6321 | /* Figure out the local name after import. */ |
6322 | import_alias = dwarf2_name (die, cu); | |
27aa8d6a | 6323 | |
794684b6 SW |
6324 | /* Figure out where the statement is being imported to. */ |
6325 | import_prefix = determine_prefix (die, cu); | |
6326 | ||
6327 | /* Figure out what the scope of the imported die is and prepend it | |
6328 | to the name of the imported die. */ | |
de4affc9 | 6329 | imported_name_prefix = determine_prefix (imported_die, imported_cu); |
794684b6 | 6330 | |
f55ee35c JK |
6331 | if (imported_die->tag != DW_TAG_namespace |
6332 | && imported_die->tag != DW_TAG_module) | |
794684b6 | 6333 | { |
13387711 SW |
6334 | imported_declaration = imported_name; |
6335 | canonical_name = imported_name_prefix; | |
794684b6 | 6336 | } |
13387711 | 6337 | else if (strlen (imported_name_prefix) > 0) |
794684b6 | 6338 | { |
13387711 SW |
6339 | temp = alloca (strlen (imported_name_prefix) |
6340 | + 2 + strlen (imported_name) + 1); | |
6341 | strcpy (temp, imported_name_prefix); | |
6342 | strcat (temp, "::"); | |
6343 | strcat (temp, imported_name); | |
6344 | canonical_name = temp; | |
794684b6 | 6345 | } |
13387711 SW |
6346 | else |
6347 | canonical_name = imported_name; | |
794684b6 | 6348 | |
32019081 JK |
6349 | cleanups = make_cleanup (VEC_cleanup (const_char_ptr), &excludes); |
6350 | ||
6351 | if (die->tag == DW_TAG_imported_module && cu->language == language_fortran) | |
6352 | for (child_die = die->child; child_die && child_die->tag; | |
6353 | child_die = sibling_die (child_die)) | |
6354 | { | |
6355 | /* DWARF-4: A Fortran use statement with a “rename list” may be | |
6356 | represented by an imported module entry with an import attribute | |
6357 | referring to the module and owned entries corresponding to those | |
6358 | entities that are renamed as part of being imported. */ | |
6359 | ||
6360 | if (child_die->tag != DW_TAG_imported_declaration) | |
6361 | { | |
6362 | complaint (&symfile_complaints, | |
6363 | _("child DW_TAG_imported_declaration expected " | |
6364 | "- DIE at 0x%x [in module %s]"), | |
b64f50a1 | 6365 | child_die->offset.sect_off, objfile->name); |
32019081 JK |
6366 | continue; |
6367 | } | |
6368 | ||
6369 | import_attr = dwarf2_attr (child_die, DW_AT_import, cu); | |
6370 | if (import_attr == NULL) | |
6371 | { | |
6372 | complaint (&symfile_complaints, _("Tag '%s' has no DW_AT_import"), | |
6373 | dwarf_tag_name (child_die->tag)); | |
6374 | continue; | |
6375 | } | |
6376 | ||
6377 | imported_cu = cu; | |
6378 | imported_die = follow_die_ref_or_sig (child_die, import_attr, | |
6379 | &imported_cu); | |
6380 | imported_name = dwarf2_name (imported_die, imported_cu); | |
6381 | if (imported_name == NULL) | |
6382 | { | |
6383 | complaint (&symfile_complaints, | |
6384 | _("child DW_TAG_imported_declaration has unknown " | |
6385 | "imported name - DIE at 0x%x [in module %s]"), | |
b64f50a1 | 6386 | child_die->offset.sect_off, objfile->name); |
32019081 JK |
6387 | continue; |
6388 | } | |
6389 | ||
6390 | VEC_safe_push (const_char_ptr, excludes, imported_name); | |
6391 | ||
6392 | process_die (child_die, cu); | |
6393 | } | |
6394 | ||
c0cc3a76 SW |
6395 | cp_add_using_directive (import_prefix, |
6396 | canonical_name, | |
6397 | import_alias, | |
13387711 | 6398 | imported_declaration, |
32019081 | 6399 | excludes, |
bb5ed363 | 6400 | &objfile->objfile_obstack); |
32019081 JK |
6401 | |
6402 | do_cleanups (cleanups); | |
27aa8d6a SW |
6403 | } |
6404 | ||
ae2de4f8 DE |
6405 | /* Cleanup function for read_file_scope. */ |
6406 | ||
cb1df416 DJ |
6407 | static void |
6408 | free_cu_line_header (void *arg) | |
6409 | { | |
6410 | struct dwarf2_cu *cu = arg; | |
6411 | ||
6412 | free_line_header (cu->line_header); | |
6413 | cu->line_header = NULL; | |
6414 | } | |
6415 | ||
9291a0cd TT |
6416 | static void |
6417 | find_file_and_directory (struct die_info *die, struct dwarf2_cu *cu, | |
6418 | char **name, char **comp_dir) | |
6419 | { | |
6420 | struct attribute *attr; | |
6421 | ||
6422 | *name = NULL; | |
6423 | *comp_dir = NULL; | |
6424 | ||
6425 | /* Find the filename. Do not use dwarf2_name here, since the filename | |
6426 | is not a source language identifier. */ | |
6427 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
6428 | if (attr) | |
6429 | { | |
6430 | *name = DW_STRING (attr); | |
6431 | } | |
6432 | ||
6433 | attr = dwarf2_attr (die, DW_AT_comp_dir, cu); | |
6434 | if (attr) | |
6435 | *comp_dir = DW_STRING (attr); | |
6436 | else if (*name != NULL && IS_ABSOLUTE_PATH (*name)) | |
6437 | { | |
6438 | *comp_dir = ldirname (*name); | |
6439 | if (*comp_dir != NULL) | |
6440 | make_cleanup (xfree, *comp_dir); | |
6441 | } | |
6442 | if (*comp_dir != NULL) | |
6443 | { | |
6444 | /* Irix 6.2 native cc prepends <machine>.: to the compilation | |
6445 | directory, get rid of it. */ | |
6446 | char *cp = strchr (*comp_dir, ':'); | |
6447 | ||
6448 | if (cp && cp != *comp_dir && cp[-1] == '.' && cp[1] == '/') | |
6449 | *comp_dir = cp + 1; | |
6450 | } | |
6451 | ||
6452 | if (*name == NULL) | |
6453 | *name = "<unknown>"; | |
6454 | } | |
6455 | ||
f3f5162e DE |
6456 | /* Handle DW_AT_stmt_list for a compilation unit or type unit. |
6457 | DIE is the DW_TAG_compile_unit or DW_TAG_type_unit die for CU. | |
6458 | COMP_DIR is the compilation directory. | |
6459 | WANT_LINE_INFO is non-zero if the pc/line-number mapping is needed. */ | |
2ab95328 TT |
6460 | |
6461 | static void | |
6462 | handle_DW_AT_stmt_list (struct die_info *die, struct dwarf2_cu *cu, | |
f3f5162e | 6463 | const char *comp_dir, int want_line_info) |
2ab95328 TT |
6464 | { |
6465 | struct attribute *attr; | |
2ab95328 | 6466 | |
2ab95328 TT |
6467 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
6468 | if (attr) | |
6469 | { | |
6470 | unsigned int line_offset = DW_UNSND (attr); | |
6471 | struct line_header *line_header | |
3019eac3 | 6472 | = dwarf_decode_line_header (line_offset, cu); |
2ab95328 TT |
6473 | |
6474 | if (line_header) | |
dee91e82 DE |
6475 | { |
6476 | cu->line_header = line_header; | |
6477 | make_cleanup (free_cu_line_header, cu); | |
f3f5162e | 6478 | dwarf_decode_lines (line_header, comp_dir, cu, NULL, want_line_info); |
dee91e82 | 6479 | } |
2ab95328 TT |
6480 | } |
6481 | } | |
6482 | ||
95554aad | 6483 | /* Process DW_TAG_compile_unit or DW_TAG_partial_unit. */ |
ae2de4f8 | 6484 | |
c906108c | 6485 | static void |
e7c27a73 | 6486 | read_file_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 6487 | { |
dee91e82 | 6488 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
debd256d | 6489 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
2acceee2 | 6490 | CORE_ADDR lowpc = ((CORE_ADDR) -1); |
c906108c SS |
6491 | CORE_ADDR highpc = ((CORE_ADDR) 0); |
6492 | struct attribute *attr; | |
e1024ff1 | 6493 | char *name = NULL; |
c906108c SS |
6494 | char *comp_dir = NULL; |
6495 | struct die_info *child_die; | |
6496 | bfd *abfd = objfile->obfd; | |
e142c38c | 6497 | CORE_ADDR baseaddr; |
6e70227d | 6498 | |
e142c38c | 6499 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c | 6500 | |
fae299cd | 6501 | get_scope_pc_bounds (die, &lowpc, &highpc, cu); |
c906108c SS |
6502 | |
6503 | /* If we didn't find a lowpc, set it to highpc to avoid complaints | |
6504 | from finish_block. */ | |
2acceee2 | 6505 | if (lowpc == ((CORE_ADDR) -1)) |
c906108c SS |
6506 | lowpc = highpc; |
6507 | lowpc += baseaddr; | |
6508 | highpc += baseaddr; | |
6509 | ||
9291a0cd | 6510 | find_file_and_directory (die, cu, &name, &comp_dir); |
e1024ff1 | 6511 | |
95554aad | 6512 | prepare_one_comp_unit (cu, die, cu->language); |
303b6f5d | 6513 | |
f4b8a18d KW |
6514 | /* The XLCL doesn't generate DW_LANG_OpenCL because this attribute is not |
6515 | standardised yet. As a workaround for the language detection we fall | |
6516 | back to the DW_AT_producer string. */ | |
6517 | if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL") != NULL) | |
6518 | cu->language = language_opencl; | |
6519 | ||
3019eac3 DE |
6520 | /* Similar hack for Go. */ |
6521 | if (cu->producer && strstr (cu->producer, "GNU Go ") != NULL) | |
6522 | set_cu_language (DW_LANG_Go, cu); | |
6523 | ||
6524 | /* We assume that we're processing GCC output. */ | |
6525 | processing_gcc_compilation = 2; | |
6526 | ||
6527 | processing_has_namespace_info = 0; | |
6528 | ||
6529 | start_symtab (name, comp_dir, lowpc); | |
6530 | record_debugformat ("DWARF 2"); | |
6531 | record_producer (cu->producer); | |
6532 | ||
6533 | /* Decode line number information if present. We do this before | |
6534 | processing child DIEs, so that the line header table is available | |
6535 | for DW_AT_decl_file. */ | |
6536 | handle_DW_AT_stmt_list (die, cu, comp_dir, 1); | |
6537 | ||
6538 | /* Process all dies in compilation unit. */ | |
6539 | if (die->child != NULL) | |
6540 | { | |
6541 | child_die = die->child; | |
6542 | while (child_die && child_die->tag) | |
6543 | { | |
6544 | process_die (child_die, cu); | |
6545 | child_die = sibling_die (child_die); | |
6546 | } | |
6547 | } | |
6548 | ||
6549 | /* Decode macro information, if present. Dwarf 2 macro information | |
6550 | refers to information in the line number info statement program | |
6551 | header, so we can only read it if we've read the header | |
6552 | successfully. */ | |
6553 | attr = dwarf2_attr (die, DW_AT_GNU_macros, cu); | |
6554 | if (attr && cu->line_header) | |
6555 | { | |
6556 | if (dwarf2_attr (die, DW_AT_macro_info, cu)) | |
6557 | complaint (&symfile_complaints, | |
6558 | _("CU refers to both DW_AT_GNU_macros and DW_AT_macro_info")); | |
6559 | ||
6560 | dwarf_decode_macros (cu->line_header, DW_UNSND (attr), | |
6561 | comp_dir, abfd, cu, | |
fceca515 DE |
6562 | &dwarf2_per_objfile->macro, 1, |
6563 | ".debug_macro"); | |
3019eac3 DE |
6564 | } |
6565 | else | |
6566 | { | |
6567 | attr = dwarf2_attr (die, DW_AT_macro_info, cu); | |
6568 | if (attr && cu->line_header) | |
6569 | { | |
6570 | unsigned int macro_offset = DW_UNSND (attr); | |
6571 | ||
6572 | dwarf_decode_macros (cu->line_header, macro_offset, | |
6573 | comp_dir, abfd, cu, | |
fceca515 DE |
6574 | &dwarf2_per_objfile->macinfo, 0, |
6575 | ".debug_macinfo"); | |
3019eac3 DE |
6576 | } |
6577 | } | |
6578 | ||
6579 | do_cleanups (back_to); | |
6580 | } | |
6581 | ||
6582 | /* Process DW_TAG_type_unit. | |
6583 | For TUs we want to skip the first top level sibling if it's not the | |
6584 | actual type being defined by this TU. In this case the first top | |
6585 | level sibling is there to provide context only. */ | |
6586 | ||
6587 | static void | |
6588 | read_type_unit_scope (struct die_info *die, struct dwarf2_cu *cu) | |
6589 | { | |
6590 | struct objfile *objfile = cu->objfile; | |
6591 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); | |
6592 | CORE_ADDR lowpc; | |
6593 | struct attribute *attr; | |
6594 | char *name = NULL; | |
6595 | char *comp_dir = NULL; | |
6596 | struct die_info *child_die; | |
6597 | bfd *abfd = objfile->obfd; | |
6598 | ||
6599 | /* start_symtab needs a low pc, but we don't really have one. | |
6600 | Do what read_file_scope would do in the absence of such info. */ | |
6601 | lowpc = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
6602 | ||
6603 | /* Find the filename. Do not use dwarf2_name here, since the filename | |
6604 | is not a source language identifier. */ | |
6605 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
6606 | if (attr) | |
6607 | name = DW_STRING (attr); | |
6608 | ||
6609 | attr = dwarf2_attr (die, DW_AT_comp_dir, cu); | |
6610 | if (attr) | |
6611 | comp_dir = DW_STRING (attr); | |
6612 | else if (name != NULL && IS_ABSOLUTE_PATH (name)) | |
6613 | { | |
6614 | comp_dir = ldirname (name); | |
6615 | if (comp_dir != NULL) | |
6616 | make_cleanup (xfree, comp_dir); | |
6617 | } | |
6618 | ||
6619 | if (name == NULL) | |
6620 | name = "<unknown>"; | |
6621 | ||
95554aad | 6622 | prepare_one_comp_unit (cu, die, language_minimal); |
3019eac3 DE |
6623 | |
6624 | /* We assume that we're processing GCC output. */ | |
6625 | processing_gcc_compilation = 2; | |
6626 | ||
6627 | processing_has_namespace_info = 0; | |
6628 | ||
6629 | start_symtab (name, comp_dir, lowpc); | |
6630 | record_debugformat ("DWARF 2"); | |
6631 | record_producer (cu->producer); | |
6632 | ||
6633 | /* Decode line number information if present. We do this before | |
6634 | processing child DIEs, so that the line header table is available | |
6635 | for DW_AT_decl_file. | |
6636 | We don't need the pc/line-number mapping for type units. */ | |
6637 | handle_DW_AT_stmt_list (die, cu, comp_dir, 0); | |
6638 | ||
6639 | /* Process the dies in the type unit. */ | |
6640 | if (die->child == NULL) | |
6641 | { | |
6642 | dump_die_for_error (die); | |
6643 | error (_("Dwarf Error: Missing children for type unit [in module %s]"), | |
6644 | bfd_get_filename (abfd)); | |
6645 | } | |
6646 | ||
6647 | child_die = die->child; | |
6648 | ||
6649 | while (child_die && child_die->tag) | |
6650 | { | |
6651 | process_die (child_die, cu); | |
6652 | ||
6653 | child_die = sibling_die (child_die); | |
6654 | } | |
6655 | ||
6656 | do_cleanups (back_to); | |
6657 | } | |
6658 | \f | |
6659 | /* DWO files. */ | |
6660 | ||
6661 | static hashval_t | |
6662 | hash_dwo_file (const void *item) | |
6663 | { | |
6664 | const struct dwo_file *dwo_file = item; | |
6665 | ||
6666 | return htab_hash_string (dwo_file->dwo_name); | |
6667 | } | |
6668 | ||
6669 | static int | |
6670 | eq_dwo_file (const void *item_lhs, const void *item_rhs) | |
6671 | { | |
6672 | const struct dwo_file *lhs = item_lhs; | |
6673 | const struct dwo_file *rhs = item_rhs; | |
6674 | ||
6675 | return strcmp (lhs->dwo_name, rhs->dwo_name) == 0; | |
6676 | } | |
6677 | ||
6678 | /* Allocate a hash table for DWO files. */ | |
6679 | ||
6680 | static htab_t | |
6681 | allocate_dwo_file_hash_table (void) | |
6682 | { | |
6683 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
6684 | ||
6685 | return htab_create_alloc_ex (41, | |
6686 | hash_dwo_file, | |
6687 | eq_dwo_file, | |
6688 | NULL, | |
6689 | &objfile->objfile_obstack, | |
6690 | hashtab_obstack_allocate, | |
6691 | dummy_obstack_deallocate); | |
6692 | } | |
6693 | ||
6694 | static hashval_t | |
6695 | hash_dwo_unit (const void *item) | |
6696 | { | |
6697 | const struct dwo_unit *dwo_unit = item; | |
6698 | ||
6699 | /* This drops the top 32 bits of the id, but is ok for a hash. */ | |
6700 | return dwo_unit->signature; | |
6701 | } | |
6702 | ||
6703 | static int | |
6704 | eq_dwo_unit (const void *item_lhs, const void *item_rhs) | |
6705 | { | |
6706 | const struct dwo_unit *lhs = item_lhs; | |
6707 | const struct dwo_unit *rhs = item_rhs; | |
6708 | ||
6709 | /* The signature is assumed to be unique within the DWO file. | |
6710 | So while object file CU dwo_id's always have the value zero, | |
6711 | that's OK, assuming each object file DWO file has only one CU, | |
6712 | and that's the rule for now. */ | |
6713 | return lhs->signature == rhs->signature; | |
6714 | } | |
6715 | ||
6716 | /* Allocate a hash table for DWO CUs,TUs. | |
6717 | There is one of these tables for each of CUs,TUs for each DWO file. */ | |
6718 | ||
6719 | static htab_t | |
6720 | allocate_dwo_unit_table (struct objfile *objfile) | |
6721 | { | |
6722 | /* Start out with a pretty small number. | |
6723 | Generally DWO files contain only one CU and maybe some TUs. */ | |
6724 | return htab_create_alloc_ex (3, | |
6725 | hash_dwo_unit, | |
6726 | eq_dwo_unit, | |
6727 | NULL, | |
6728 | &objfile->objfile_obstack, | |
6729 | hashtab_obstack_allocate, | |
6730 | dummy_obstack_deallocate); | |
6731 | } | |
6732 | ||
6733 | /* This function is mapped across the sections and remembers the offset and | |
6734 | size of each of the DWO debugging sections we are interested in. */ | |
6735 | ||
6736 | static void | |
6737 | dwarf2_locate_dwo_sections (bfd *abfd, asection *sectp, void *dwo_file_ptr) | |
6738 | { | |
6739 | struct dwo_file *dwo_file = dwo_file_ptr; | |
6740 | const struct dwo_section_names *names = &dwo_section_names; | |
6741 | ||
6742 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
6743 | { | |
6744 | dwo_file->sections.abbrev.asection = sectp; | |
6745 | dwo_file->sections.abbrev.size = bfd_get_section_size (sectp); | |
6746 | } | |
6747 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
6748 | { | |
6749 | dwo_file->sections.info.asection = sectp; | |
6750 | dwo_file->sections.info.size = bfd_get_section_size (sectp); | |
6751 | } | |
6752 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
6753 | { | |
6754 | dwo_file->sections.line.asection = sectp; | |
6755 | dwo_file->sections.line.size = bfd_get_section_size (sectp); | |
6756 | } | |
6757 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
6758 | { | |
6759 | dwo_file->sections.loc.asection = sectp; | |
6760 | dwo_file->sections.loc.size = bfd_get_section_size (sectp); | |
6761 | } | |
6762 | else if (section_is_p (sectp->name, &names->str_dwo)) | |
6763 | { | |
6764 | dwo_file->sections.str.asection = sectp; | |
6765 | dwo_file->sections.str.size = bfd_get_section_size (sectp); | |
6766 | } | |
6767 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
6768 | { | |
6769 | dwo_file->sections.str_offsets.asection = sectp; | |
6770 | dwo_file->sections.str_offsets.size = bfd_get_section_size (sectp); | |
6771 | } | |
6772 | else if (section_is_p (sectp->name, &names->types_dwo)) | |
6773 | { | |
6774 | struct dwarf2_section_info type_section; | |
6775 | ||
6776 | memset (&type_section, 0, sizeof (type_section)); | |
6777 | type_section.asection = sectp; | |
6778 | type_section.size = bfd_get_section_size (sectp); | |
6779 | VEC_safe_push (dwarf2_section_info_def, dwo_file->sections.types, | |
6780 | &type_section); | |
6781 | } | |
6782 | } | |
6783 | ||
6784 | /* Structure used to pass data to create_debug_info_hash_table_reader. */ | |
6785 | ||
6786 | struct create_dwo_info_table_data | |
6787 | { | |
6788 | struct dwo_file *dwo_file; | |
6789 | htab_t cu_htab; | |
6790 | }; | |
6791 | ||
6792 | /* die_reader_func for create_debug_info_hash_table. */ | |
6793 | ||
6794 | static void | |
6795 | create_debug_info_hash_table_reader (const struct die_reader_specs *reader, | |
6796 | gdb_byte *info_ptr, | |
6797 | struct die_info *comp_unit_die, | |
6798 | int has_children, | |
6799 | void *datap) | |
6800 | { | |
6801 | struct dwarf2_cu *cu = reader->cu; | |
6802 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
6803 | sect_offset offset = cu->per_cu->offset; | |
6804 | struct dwarf2_section_info *section = cu->per_cu->info_or_types_section; | |
6805 | struct create_dwo_info_table_data *data = datap; | |
6806 | struct dwo_file *dwo_file = data->dwo_file; | |
6807 | htab_t cu_htab = data->cu_htab; | |
6808 | void **slot; | |
6809 | struct attribute *attr; | |
6810 | struct dwo_unit *dwo_unit; | |
6811 | ||
6812 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_id, cu); | |
6813 | if (attr == NULL) | |
6814 | { | |
6815 | error (_("Dwarf Error: debug entry at offset 0x%x is missing" | |
6816 | " its dwo_id [in module %s]"), | |
6817 | offset.sect_off, dwo_file->dwo_name); | |
6818 | return; | |
6819 | } | |
6820 | ||
6821 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); | |
6822 | dwo_unit->dwo_file = dwo_file; | |
6823 | dwo_unit->signature = DW_UNSND (attr); | |
6824 | dwo_unit->info_or_types_section = section; | |
6825 | dwo_unit->offset = offset; | |
6826 | dwo_unit->length = cu->per_cu->length; | |
6827 | ||
6828 | slot = htab_find_slot (cu_htab, dwo_unit, INSERT); | |
6829 | gdb_assert (slot != NULL); | |
6830 | if (*slot != NULL) | |
6831 | { | |
6832 | const struct dwo_unit *dup_dwo_unit = *slot; | |
6833 | ||
6834 | complaint (&symfile_complaints, | |
6835 | _("debug entry at offset 0x%x is duplicate to the entry at" | |
6836 | " offset 0x%x, dwo_id 0x%s [in module %s]"), | |
6837 | offset.sect_off, dup_dwo_unit->offset.sect_off, | |
6838 | phex (dwo_unit->signature, sizeof (dwo_unit->signature)), | |
6839 | dwo_file->dwo_name); | |
6840 | } | |
6841 | else | |
6842 | *slot = dwo_unit; | |
6843 | ||
6844 | if (dwarf2_die_debug) | |
6845 | fprintf_unfiltered (gdb_stdlog, " offset 0x%x, dwo_id 0x%s\n", | |
6846 | offset.sect_off, | |
6847 | phex (dwo_unit->signature, | |
6848 | sizeof (dwo_unit->signature))); | |
6849 | } | |
6850 | ||
6851 | /* Create a hash table to map DWO IDs to their CU entry in .debug_info.dwo. */ | |
6852 | ||
6853 | static htab_t | |
6854 | create_debug_info_hash_table (struct dwo_file *dwo_file) | |
6855 | { | |
6856 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
6857 | struct dwarf2_section_info *section = &dwo_file->sections.info; | |
6858 | bfd *abfd; | |
6859 | htab_t cu_htab; | |
6860 | gdb_byte *info_ptr, *end_ptr; | |
6861 | struct create_dwo_info_table_data create_dwo_info_table_data; | |
6862 | ||
6863 | dwarf2_read_section (objfile, section); | |
6864 | info_ptr = section->buffer; | |
6865 | ||
6866 | if (info_ptr == NULL) | |
6867 | return NULL; | |
6868 | ||
6869 | /* We can't set abfd until now because the section may be empty or | |
6870 | not present, in which case section->asection will be NULL. */ | |
6871 | abfd = section->asection->owner; | |
6872 | ||
6873 | if (dwarf2_die_debug) | |
6874 | fprintf_unfiltered (gdb_stdlog, "Reading .debug_info.dwo for %s:\n", | |
6875 | bfd_get_filename (abfd)); | |
6876 | ||
6877 | cu_htab = allocate_dwo_unit_table (objfile); | |
6878 | ||
6879 | create_dwo_info_table_data.dwo_file = dwo_file; | |
6880 | create_dwo_info_table_data.cu_htab = cu_htab; | |
6881 | ||
6882 | end_ptr = info_ptr + section->size; | |
6883 | while (info_ptr < end_ptr) | |
6884 | { | |
6885 | struct dwarf2_per_cu_data per_cu; | |
6886 | ||
6887 | memset (&per_cu, 0, sizeof (per_cu)); | |
6888 | per_cu.objfile = objfile; | |
6889 | per_cu.is_debug_types = 0; | |
6890 | per_cu.offset.sect_off = info_ptr - section->buffer; | |
6891 | per_cu.info_or_types_section = section; | |
6892 | ||
6893 | init_cutu_and_read_dies_no_follow (&per_cu, | |
6894 | &dwo_file->sections.abbrev, | |
6895 | dwo_file, | |
6896 | create_debug_info_hash_table_reader, | |
6897 | &create_dwo_info_table_data); | |
6898 | ||
6899 | info_ptr += per_cu.length; | |
6900 | } | |
6901 | ||
6902 | return cu_htab; | |
6903 | } | |
6904 | ||
6905 | /* Subroutine of open_dwo_file to simplify it. | |
6906 | Open the file specified by FILE_NAME and hand it off to BFD for | |
6907 | preliminary analysis. Return a newly initialized bfd *, which | |
6908 | includes a canonicalized copy of FILE_NAME. | |
6909 | In case of trouble, return NULL. | |
6910 | NOTE: This function is derived from symfile_bfd_open. */ | |
6911 | ||
6912 | static bfd * | |
6913 | try_open_dwo_file (const char *file_name) | |
6914 | { | |
6915 | bfd *sym_bfd; | |
6916 | int desc; | |
6917 | char *absolute_name; | |
6918 | char *name; | |
6919 | ||
6920 | desc = openp (debug_file_directory, OPF_TRY_CWD_FIRST, file_name, | |
6921 | O_RDONLY | O_BINARY, &absolute_name); | |
6922 | if (desc < 0) | |
6923 | return NULL; | |
6924 | ||
6925 | sym_bfd = bfd_fopen (absolute_name, gnutarget, FOPEN_RB, desc); | |
6926 | if (!sym_bfd) | |
6927 | { | |
6928 | close (desc); | |
6929 | xfree (absolute_name); | |
6930 | return NULL; | |
6931 | } | |
6932 | bfd_set_cacheable (sym_bfd, 1); | |
6933 | ||
6934 | if (!bfd_check_format (sym_bfd, bfd_object)) | |
6935 | { | |
6936 | bfd_close (sym_bfd); /* This also closes desc. */ | |
6937 | xfree (absolute_name); | |
6938 | return NULL; | |
6939 | } | |
6940 | ||
6941 | /* bfd_usrdata exists for applications and libbfd must not touch it. */ | |
6942 | gdb_assert (bfd_usrdata (sym_bfd) == NULL); | |
6943 | ||
6944 | return sym_bfd; | |
6945 | } | |
6946 | ||
6947 | /* Try to open DWO file DWO_NAME. | |
6948 | COMP_DIR is the DW_AT_comp_dir attribute. | |
6949 | The result is the bfd handle of the file. | |
6950 | If there is a problem finding or opening the file, return NULL. | |
6951 | Upon success, the canonicalized path of the file is stored in the bfd, | |
6952 | same as symfile_bfd_open. */ | |
6953 | ||
6954 | static bfd * | |
6955 | open_dwo_file (const char *dwo_name, const char *comp_dir) | |
6956 | { | |
6957 | bfd *abfd; | |
6958 | char *path_to_try, *debug_dir; | |
6959 | ||
6960 | if (IS_ABSOLUTE_PATH (dwo_name)) | |
6961 | return try_open_dwo_file (dwo_name); | |
6962 | ||
6963 | /* Before trying the search path, try DWO_NAME in COMP_DIR. */ | |
6964 | ||
6965 | if (comp_dir != NULL) | |
6966 | { | |
6967 | char *path_to_try = concat (comp_dir, SLASH_STRING, dwo_name, NULL); | |
6968 | ||
6969 | /* NOTE: If comp_dir is a relative path, this will also try the | |
6970 | search path, which seems useful. */ | |
6971 | abfd = try_open_dwo_file (path_to_try); | |
6972 | xfree (path_to_try); | |
6973 | if (abfd != NULL) | |
6974 | return abfd; | |
6975 | } | |
6976 | ||
6977 | /* That didn't work, try debug-file-directory, which, despite its name, | |
6978 | is a list of paths. */ | |
6979 | ||
6980 | if (*debug_file_directory == '\0') | |
6981 | return NULL; | |
6982 | ||
6983 | return try_open_dwo_file (dwo_name); | |
6984 | } | |
6985 | ||
6986 | /* Initialize the use of the DWO file specified by DWO_NAME. */ | |
6987 | ||
6988 | static struct dwo_file * | |
6989 | init_dwo_file (const char *dwo_name, const char *comp_dir) | |
6990 | { | |
6991 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
6992 | struct dwo_file *dwo_file = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
6993 | struct dwo_file); | |
6994 | bfd *abfd; | |
6995 | struct cleanup *cleanups; | |
6996 | ||
6997 | if (dwarf2_die_debug) | |
6998 | fprintf_unfiltered (gdb_stdlog, "Reading DWO file %s:\n", dwo_name); | |
6999 | ||
7000 | abfd = open_dwo_file (dwo_name, comp_dir); | |
7001 | if (abfd == NULL) | |
7002 | return NULL; | |
7003 | dwo_file->dwo_name = dwo_name; | |
7004 | dwo_file->dwo_bfd = abfd; | |
7005 | ||
7006 | cleanups = make_cleanup (free_dwo_file_cleanup, dwo_file); | |
7007 | ||
7008 | bfd_map_over_sections (abfd, dwarf2_locate_dwo_sections, dwo_file); | |
7009 | ||
7010 | dwo_file->cus = create_debug_info_hash_table (dwo_file); | |
7011 | ||
7012 | dwo_file->tus = create_debug_types_hash_table (dwo_file, | |
7013 | dwo_file->sections.types); | |
7014 | ||
7015 | discard_cleanups (cleanups); | |
7016 | ||
7017 | return dwo_file; | |
7018 | } | |
7019 | ||
7020 | /* Lookup DWO file DWO_NAME. */ | |
7021 | ||
7022 | static struct dwo_file * | |
7023 | lookup_dwo_file (char *dwo_name, const char *comp_dir) | |
7024 | { | |
7025 | struct dwo_file *dwo_file; | |
7026 | struct dwo_file find_entry; | |
7027 | void **slot; | |
7028 | ||
7029 | if (dwarf2_per_objfile->dwo_files == NULL) | |
7030 | dwarf2_per_objfile->dwo_files = allocate_dwo_file_hash_table (); | |
7031 | ||
7032 | /* Have we already seen this DWO file? */ | |
7033 | find_entry.dwo_name = dwo_name; | |
7034 | slot = htab_find_slot (dwarf2_per_objfile->dwo_files, &find_entry, INSERT); | |
7035 | ||
7036 | /* If not, read it in and build a table of the DWOs it contains. */ | |
7037 | if (*slot == NULL) | |
7038 | *slot = init_dwo_file (dwo_name, comp_dir); | |
7039 | ||
7040 | /* NOTE: This will be NULL if unable to open the file. */ | |
7041 | dwo_file = *slot; | |
7042 | ||
7043 | return dwo_file; | |
7044 | } | |
7045 | ||
7046 | /* Lookup the DWO CU referenced from THIS_CU in DWO file DWO_NAME. | |
7047 | If non-NULL, comp_dir is the DW_AT_comp_dir attribute. | |
7048 | SIGNATURE is the "dwo_id" of the CU (for consistency we use the same | |
7049 | nomenclature as TUs). | |
7050 | The result is the DWO CU or NULL if we didn't find it | |
7051 | (dwo_id mismatch or couldn't find the DWO file). */ | |
7052 | ||
7053 | static struct dwo_unit * | |
7054 | lookup_dwo_comp_unit (struct dwarf2_per_cu_data *this_cu, | |
7055 | char *dwo_name, const char *comp_dir, | |
7056 | ULONGEST signature) | |
7057 | { | |
7058 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
7059 | struct dwo_file *dwo_file; | |
7060 | ||
7061 | dwo_file = lookup_dwo_file (dwo_name, comp_dir); | |
7062 | if (dwo_file == NULL) | |
7063 | return NULL; | |
7064 | ||
7065 | /* Look up the DWO using its signature(dwo_id). */ | |
7066 | ||
7067 | if (dwo_file->cus != NULL) | |
7068 | { | |
7069 | struct dwo_unit find_dwo_cu, *dwo_cu; | |
7070 | ||
7071 | find_dwo_cu.signature = signature; | |
7072 | dwo_cu = htab_find (dwo_file->cus, &find_dwo_cu); | |
a766d390 | 7073 | |
3019eac3 DE |
7074 | if (dwo_cu != NULL) |
7075 | return dwo_cu; | |
7076 | } | |
c906108c | 7077 | |
3019eac3 | 7078 | /* We didn't find it. This must mean a dwo_id mismatch. */ |
df8a16a1 | 7079 | |
3019eac3 DE |
7080 | complaint (&symfile_complaints, |
7081 | _("Could not find DWO CU referenced by CU at offset 0x%x" | |
7082 | " [in module %s]"), | |
7083 | this_cu->offset.sect_off, objfile->name); | |
7084 | return NULL; | |
7085 | } | |
c906108c | 7086 | |
3019eac3 DE |
7087 | /* Lookup the DWO TU referenced from THIS_TU in DWO file DWO_NAME. |
7088 | If non-NULL, comp_dir is the DW_AT_comp_dir attribute. | |
7089 | The result is the DWO CU or NULL if we didn't find it | |
7090 | (dwo_id mismatch or couldn't find the DWO file). */ | |
debd256d | 7091 | |
3019eac3 DE |
7092 | static struct dwo_unit * |
7093 | lookup_dwo_type_unit (struct signatured_type *this_tu, | |
7094 | char *dwo_name, const char *comp_dir) | |
7095 | { | |
7096 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
7097 | struct dwo_file *dwo_file; | |
7098 | struct dwo_unit find_dwo_tu, *dwo_tu; | |
cb1df416 | 7099 | |
3019eac3 DE |
7100 | dwo_file = lookup_dwo_file (dwo_name, comp_dir); |
7101 | if (dwo_file == NULL) | |
7102 | return NULL; | |
cf2c3c16 | 7103 | |
3019eac3 DE |
7104 | /* Look up the DWO using its signature(dwo_id). */ |
7105 | ||
7106 | if (dwo_file->tus != NULL) | |
cf2c3c16 | 7107 | { |
3019eac3 | 7108 | struct dwo_unit find_dwo_tu, *dwo_tu; |
9a619af0 | 7109 | |
3019eac3 DE |
7110 | find_dwo_tu.signature = this_tu->signature; |
7111 | dwo_tu = htab_find (dwo_file->tus, &find_dwo_tu); | |
7112 | ||
7113 | if (dwo_tu != NULL) | |
7114 | return dwo_tu; | |
2e276125 | 7115 | } |
9cdd5dbd | 7116 | |
3019eac3 DE |
7117 | /* We didn't find it. This must mean a dwo_id mismatch. */ |
7118 | ||
7119 | complaint (&symfile_complaints, | |
7120 | _("Could not find DWO TU referenced by TU at offset 0x%x" | |
7121 | " [in module %s]"), | |
7122 | this_tu->per_cu.offset.sect_off, objfile->name); | |
7123 | return NULL; | |
5fb290d7 DJ |
7124 | } |
7125 | ||
3019eac3 DE |
7126 | /* Free all resources associated with DWO_FILE. |
7127 | Close the DWO file and munmap the sections. | |
7128 | All memory should be on the objfile obstack. */ | |
348e048f DE |
7129 | |
7130 | static void | |
3019eac3 | 7131 | free_dwo_file (struct dwo_file *dwo_file, struct objfile *objfile) |
348e048f | 7132 | { |
3019eac3 DE |
7133 | int ix; |
7134 | struct dwarf2_section_info *section; | |
348e048f | 7135 | |
3019eac3 DE |
7136 | gdb_assert (dwo_file->dwo_bfd != objfile->obfd); |
7137 | bfd_close (dwo_file->dwo_bfd); | |
348e048f | 7138 | |
3019eac3 DE |
7139 | munmap_section_buffer (&dwo_file->sections.abbrev); |
7140 | munmap_section_buffer (&dwo_file->sections.info); | |
7141 | munmap_section_buffer (&dwo_file->sections.line); | |
7142 | munmap_section_buffer (&dwo_file->sections.loc); | |
7143 | munmap_section_buffer (&dwo_file->sections.str); | |
7144 | munmap_section_buffer (&dwo_file->sections.str_offsets); | |
348e048f | 7145 | |
3019eac3 DE |
7146 | for (ix = 0; |
7147 | VEC_iterate (dwarf2_section_info_def, dwo_file->sections.types, | |
7148 | ix, section); | |
7149 | ++ix) | |
7150 | munmap_section_buffer (section); | |
348e048f | 7151 | |
3019eac3 DE |
7152 | VEC_free (dwarf2_section_info_def, dwo_file->sections.types); |
7153 | } | |
348e048f | 7154 | |
3019eac3 | 7155 | /* Wrapper for free_dwo_file for use in cleanups. */ |
348e048f | 7156 | |
3019eac3 DE |
7157 | static void |
7158 | free_dwo_file_cleanup (void *arg) | |
7159 | { | |
7160 | struct dwo_file *dwo_file = (struct dwo_file *) arg; | |
7161 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
348e048f | 7162 | |
3019eac3 DE |
7163 | free_dwo_file (dwo_file, objfile); |
7164 | } | |
348e048f | 7165 | |
3019eac3 | 7166 | /* Traversal function for free_dwo_files. */ |
2ab95328 | 7167 | |
3019eac3 DE |
7168 | static int |
7169 | free_dwo_file_from_slot (void **slot, void *info) | |
7170 | { | |
7171 | struct dwo_file *dwo_file = (struct dwo_file *) *slot; | |
7172 | struct objfile *objfile = (struct objfile *) info; | |
348e048f | 7173 | |
3019eac3 | 7174 | free_dwo_file (dwo_file, objfile); |
348e048f | 7175 | |
3019eac3 DE |
7176 | return 1; |
7177 | } | |
348e048f | 7178 | |
3019eac3 | 7179 | /* Free all resources associated with DWO_FILES. */ |
348e048f | 7180 | |
3019eac3 DE |
7181 | static void |
7182 | free_dwo_files (htab_t dwo_files, struct objfile *objfile) | |
7183 | { | |
7184 | htab_traverse_noresize (dwo_files, free_dwo_file_from_slot, objfile); | |
348e048f | 7185 | } |
3019eac3 DE |
7186 | \f |
7187 | /* Read in various DIEs. */ | |
348e048f | 7188 | |
d389af10 JK |
7189 | /* qsort helper for inherit_abstract_dies. */ |
7190 | ||
7191 | static int | |
7192 | unsigned_int_compar (const void *ap, const void *bp) | |
7193 | { | |
7194 | unsigned int a = *(unsigned int *) ap; | |
7195 | unsigned int b = *(unsigned int *) bp; | |
7196 | ||
7197 | return (a > b) - (b > a); | |
7198 | } | |
7199 | ||
7200 | /* DW_AT_abstract_origin inherits whole DIEs (not just their attributes). | |
3e43a32a MS |
7201 | Inherit only the children of the DW_AT_abstract_origin DIE not being |
7202 | already referenced by DW_AT_abstract_origin from the children of the | |
7203 | current DIE. */ | |
d389af10 JK |
7204 | |
7205 | static void | |
7206 | inherit_abstract_dies (struct die_info *die, struct dwarf2_cu *cu) | |
7207 | { | |
7208 | struct die_info *child_die; | |
7209 | unsigned die_children_count; | |
7210 | /* CU offsets which were referenced by children of the current DIE. */ | |
b64f50a1 JK |
7211 | sect_offset *offsets; |
7212 | sect_offset *offsets_end, *offsetp; | |
d389af10 JK |
7213 | /* Parent of DIE - referenced by DW_AT_abstract_origin. */ |
7214 | struct die_info *origin_die; | |
7215 | /* Iterator of the ORIGIN_DIE children. */ | |
7216 | struct die_info *origin_child_die; | |
7217 | struct cleanup *cleanups; | |
7218 | struct attribute *attr; | |
cd02d79d PA |
7219 | struct dwarf2_cu *origin_cu; |
7220 | struct pending **origin_previous_list_in_scope; | |
d389af10 JK |
7221 | |
7222 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
7223 | if (!attr) | |
7224 | return; | |
7225 | ||
cd02d79d PA |
7226 | /* Note that following die references may follow to a die in a |
7227 | different cu. */ | |
7228 | ||
7229 | origin_cu = cu; | |
7230 | origin_die = follow_die_ref (die, attr, &origin_cu); | |
7231 | ||
7232 | /* We're inheriting ORIGIN's children into the scope we'd put DIE's | |
7233 | symbols in. */ | |
7234 | origin_previous_list_in_scope = origin_cu->list_in_scope; | |
7235 | origin_cu->list_in_scope = cu->list_in_scope; | |
7236 | ||
edb3359d DJ |
7237 | if (die->tag != origin_die->tag |
7238 | && !(die->tag == DW_TAG_inlined_subroutine | |
7239 | && origin_die->tag == DW_TAG_subprogram)) | |
d389af10 JK |
7240 | complaint (&symfile_complaints, |
7241 | _("DIE 0x%x and its abstract origin 0x%x have different tags"), | |
b64f50a1 | 7242 | die->offset.sect_off, origin_die->offset.sect_off); |
d389af10 JK |
7243 | |
7244 | child_die = die->child; | |
7245 | die_children_count = 0; | |
7246 | while (child_die && child_die->tag) | |
7247 | { | |
7248 | child_die = sibling_die (child_die); | |
7249 | die_children_count++; | |
7250 | } | |
7251 | offsets = xmalloc (sizeof (*offsets) * die_children_count); | |
7252 | cleanups = make_cleanup (xfree, offsets); | |
7253 | ||
7254 | offsets_end = offsets; | |
7255 | child_die = die->child; | |
7256 | while (child_die && child_die->tag) | |
7257 | { | |
c38f313d DJ |
7258 | /* For each CHILD_DIE, find the corresponding child of |
7259 | ORIGIN_DIE. If there is more than one layer of | |
7260 | DW_AT_abstract_origin, follow them all; there shouldn't be, | |
7261 | but GCC versions at least through 4.4 generate this (GCC PR | |
7262 | 40573). */ | |
7263 | struct die_info *child_origin_die = child_die; | |
cd02d79d | 7264 | struct dwarf2_cu *child_origin_cu = cu; |
9a619af0 | 7265 | |
c38f313d DJ |
7266 | while (1) |
7267 | { | |
cd02d79d PA |
7268 | attr = dwarf2_attr (child_origin_die, DW_AT_abstract_origin, |
7269 | child_origin_cu); | |
c38f313d DJ |
7270 | if (attr == NULL) |
7271 | break; | |
cd02d79d PA |
7272 | child_origin_die = follow_die_ref (child_origin_die, attr, |
7273 | &child_origin_cu); | |
c38f313d DJ |
7274 | } |
7275 | ||
d389af10 JK |
7276 | /* According to DWARF3 3.3.8.2 #3 new entries without their abstract |
7277 | counterpart may exist. */ | |
c38f313d | 7278 | if (child_origin_die != child_die) |
d389af10 | 7279 | { |
edb3359d DJ |
7280 | if (child_die->tag != child_origin_die->tag |
7281 | && !(child_die->tag == DW_TAG_inlined_subroutine | |
7282 | && child_origin_die->tag == DW_TAG_subprogram)) | |
d389af10 JK |
7283 | complaint (&symfile_complaints, |
7284 | _("Child DIE 0x%x and its abstract origin 0x%x have " | |
b64f50a1 JK |
7285 | "different tags"), child_die->offset.sect_off, |
7286 | child_origin_die->offset.sect_off); | |
c38f313d DJ |
7287 | if (child_origin_die->parent != origin_die) |
7288 | complaint (&symfile_complaints, | |
7289 | _("Child DIE 0x%x and its abstract origin 0x%x have " | |
b64f50a1 JK |
7290 | "different parents"), child_die->offset.sect_off, |
7291 | child_origin_die->offset.sect_off); | |
c38f313d DJ |
7292 | else |
7293 | *offsets_end++ = child_origin_die->offset; | |
d389af10 JK |
7294 | } |
7295 | child_die = sibling_die (child_die); | |
7296 | } | |
7297 | qsort (offsets, offsets_end - offsets, sizeof (*offsets), | |
7298 | unsigned_int_compar); | |
7299 | for (offsetp = offsets + 1; offsetp < offsets_end; offsetp++) | |
b64f50a1 | 7300 | if (offsetp[-1].sect_off == offsetp->sect_off) |
3e43a32a MS |
7301 | complaint (&symfile_complaints, |
7302 | _("Multiple children of DIE 0x%x refer " | |
7303 | "to DIE 0x%x as their abstract origin"), | |
b64f50a1 | 7304 | die->offset.sect_off, offsetp->sect_off); |
d389af10 JK |
7305 | |
7306 | offsetp = offsets; | |
7307 | origin_child_die = origin_die->child; | |
7308 | while (origin_child_die && origin_child_die->tag) | |
7309 | { | |
7310 | /* Is ORIGIN_CHILD_DIE referenced by any of the DIE children? */ | |
b64f50a1 JK |
7311 | while (offsetp < offsets_end |
7312 | && offsetp->sect_off < origin_child_die->offset.sect_off) | |
d389af10 | 7313 | offsetp++; |
b64f50a1 JK |
7314 | if (offsetp >= offsets_end |
7315 | || offsetp->sect_off > origin_child_die->offset.sect_off) | |
d389af10 JK |
7316 | { |
7317 | /* Found that ORIGIN_CHILD_DIE is really not referenced. */ | |
cd02d79d | 7318 | process_die (origin_child_die, origin_cu); |
d389af10 JK |
7319 | } |
7320 | origin_child_die = sibling_die (origin_child_die); | |
7321 | } | |
cd02d79d | 7322 | origin_cu->list_in_scope = origin_previous_list_in_scope; |
d389af10 JK |
7323 | |
7324 | do_cleanups (cleanups); | |
7325 | } | |
7326 | ||
c906108c | 7327 | static void |
e7c27a73 | 7328 | read_func_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 7329 | { |
e7c27a73 | 7330 | struct objfile *objfile = cu->objfile; |
52f0bd74 | 7331 | struct context_stack *new; |
c906108c SS |
7332 | CORE_ADDR lowpc; |
7333 | CORE_ADDR highpc; | |
7334 | struct die_info *child_die; | |
edb3359d | 7335 | struct attribute *attr, *call_line, *call_file; |
c906108c | 7336 | char *name; |
e142c38c | 7337 | CORE_ADDR baseaddr; |
801e3a5b | 7338 | struct block *block; |
edb3359d | 7339 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
34eaf542 TT |
7340 | VEC (symbolp) *template_args = NULL; |
7341 | struct template_symbol *templ_func = NULL; | |
edb3359d DJ |
7342 | |
7343 | if (inlined_func) | |
7344 | { | |
7345 | /* If we do not have call site information, we can't show the | |
7346 | caller of this inlined function. That's too confusing, so | |
7347 | only use the scope for local variables. */ | |
7348 | call_line = dwarf2_attr (die, DW_AT_call_line, cu); | |
7349 | call_file = dwarf2_attr (die, DW_AT_call_file, cu); | |
7350 | if (call_line == NULL || call_file == NULL) | |
7351 | { | |
7352 | read_lexical_block_scope (die, cu); | |
7353 | return; | |
7354 | } | |
7355 | } | |
c906108c | 7356 | |
e142c38c DJ |
7357 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
7358 | ||
94af9270 | 7359 | name = dwarf2_name (die, cu); |
c906108c | 7360 | |
e8d05480 JB |
7361 | /* Ignore functions with missing or empty names. These are actually |
7362 | illegal according to the DWARF standard. */ | |
7363 | if (name == NULL) | |
7364 | { | |
7365 | complaint (&symfile_complaints, | |
b64f50a1 JK |
7366 | _("missing name for subprogram DIE at %d"), |
7367 | die->offset.sect_off); | |
e8d05480 JB |
7368 | return; |
7369 | } | |
7370 | ||
7371 | /* Ignore functions with missing or invalid low and high pc attributes. */ | |
7372 | if (!dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL)) | |
7373 | { | |
ae4d0c03 PM |
7374 | attr = dwarf2_attr (die, DW_AT_external, cu); |
7375 | if (!attr || !DW_UNSND (attr)) | |
7376 | complaint (&symfile_complaints, | |
3e43a32a MS |
7377 | _("cannot get low and high bounds " |
7378 | "for subprogram DIE at %d"), | |
b64f50a1 | 7379 | die->offset.sect_off); |
e8d05480 JB |
7380 | return; |
7381 | } | |
c906108c SS |
7382 | |
7383 | lowpc += baseaddr; | |
7384 | highpc += baseaddr; | |
7385 | ||
34eaf542 TT |
7386 | /* If we have any template arguments, then we must allocate a |
7387 | different sort of symbol. */ | |
7388 | for (child_die = die->child; child_die; child_die = sibling_die (child_die)) | |
7389 | { | |
7390 | if (child_die->tag == DW_TAG_template_type_param | |
7391 | || child_die->tag == DW_TAG_template_value_param) | |
7392 | { | |
7393 | templ_func = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
7394 | struct template_symbol); | |
7395 | templ_func->base.is_cplus_template_function = 1; | |
7396 | break; | |
7397 | } | |
7398 | } | |
7399 | ||
c906108c | 7400 | new = push_context (0, lowpc); |
34eaf542 TT |
7401 | new->name = new_symbol_full (die, read_type_die (die, cu), cu, |
7402 | (struct symbol *) templ_func); | |
4c2df51b | 7403 | |
4cecd739 DJ |
7404 | /* If there is a location expression for DW_AT_frame_base, record |
7405 | it. */ | |
e142c38c | 7406 | attr = dwarf2_attr (die, DW_AT_frame_base, cu); |
4c2df51b | 7407 | if (attr) |
c034e007 AC |
7408 | /* FIXME: cagney/2004-01-26: The DW_AT_frame_base's location |
7409 | expression is being recorded directly in the function's symbol | |
7410 | and not in a separate frame-base object. I guess this hack is | |
7411 | to avoid adding some sort of frame-base adjunct/annex to the | |
7412 | function's symbol :-(. The problem with doing this is that it | |
7413 | results in a function symbol with a location expression that | |
7414 | has nothing to do with the location of the function, ouch! The | |
7415 | relationship should be: a function's symbol has-a frame base; a | |
7416 | frame-base has-a location expression. */ | |
e7c27a73 | 7417 | dwarf2_symbol_mark_computed (attr, new->name, cu); |
4c2df51b | 7418 | |
e142c38c | 7419 | cu->list_in_scope = &local_symbols; |
c906108c | 7420 | |
639d11d3 | 7421 | if (die->child != NULL) |
c906108c | 7422 | { |
639d11d3 | 7423 | child_die = die->child; |
c906108c SS |
7424 | while (child_die && child_die->tag) |
7425 | { | |
34eaf542 TT |
7426 | if (child_die->tag == DW_TAG_template_type_param |
7427 | || child_die->tag == DW_TAG_template_value_param) | |
7428 | { | |
7429 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
7430 | ||
f1078f66 DJ |
7431 | if (arg != NULL) |
7432 | VEC_safe_push (symbolp, template_args, arg); | |
34eaf542 TT |
7433 | } |
7434 | else | |
7435 | process_die (child_die, cu); | |
c906108c SS |
7436 | child_die = sibling_die (child_die); |
7437 | } | |
7438 | } | |
7439 | ||
d389af10 JK |
7440 | inherit_abstract_dies (die, cu); |
7441 | ||
4a811a97 UW |
7442 | /* If we have a DW_AT_specification, we might need to import using |
7443 | directives from the context of the specification DIE. See the | |
7444 | comment in determine_prefix. */ | |
7445 | if (cu->language == language_cplus | |
7446 | && dwarf2_attr (die, DW_AT_specification, cu)) | |
7447 | { | |
7448 | struct dwarf2_cu *spec_cu = cu; | |
7449 | struct die_info *spec_die = die_specification (die, &spec_cu); | |
7450 | ||
7451 | while (spec_die) | |
7452 | { | |
7453 | child_die = spec_die->child; | |
7454 | while (child_die && child_die->tag) | |
7455 | { | |
7456 | if (child_die->tag == DW_TAG_imported_module) | |
7457 | process_die (child_die, spec_cu); | |
7458 | child_die = sibling_die (child_die); | |
7459 | } | |
7460 | ||
7461 | /* In some cases, GCC generates specification DIEs that | |
7462 | themselves contain DW_AT_specification attributes. */ | |
7463 | spec_die = die_specification (spec_die, &spec_cu); | |
7464 | } | |
7465 | } | |
7466 | ||
c906108c SS |
7467 | new = pop_context (); |
7468 | /* Make a block for the local symbols within. */ | |
801e3a5b JB |
7469 | block = finish_block (new->name, &local_symbols, new->old_blocks, |
7470 | lowpc, highpc, objfile); | |
7471 | ||
df8a16a1 | 7472 | /* For C++, set the block's scope. */ |
f55ee35c | 7473 | if (cu->language == language_cplus || cu->language == language_fortran) |
df8a16a1 | 7474 | cp_set_block_scope (new->name, block, &objfile->objfile_obstack, |
0114d602 | 7475 | determine_prefix (die, cu), |
df8a16a1 DJ |
7476 | processing_has_namespace_info); |
7477 | ||
801e3a5b JB |
7478 | /* If we have address ranges, record them. */ |
7479 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
6e70227d | 7480 | |
34eaf542 TT |
7481 | /* Attach template arguments to function. */ |
7482 | if (! VEC_empty (symbolp, template_args)) | |
7483 | { | |
7484 | gdb_assert (templ_func != NULL); | |
7485 | ||
7486 | templ_func->n_template_arguments = VEC_length (symbolp, template_args); | |
7487 | templ_func->template_arguments | |
7488 | = obstack_alloc (&objfile->objfile_obstack, | |
7489 | (templ_func->n_template_arguments | |
7490 | * sizeof (struct symbol *))); | |
7491 | memcpy (templ_func->template_arguments, | |
7492 | VEC_address (symbolp, template_args), | |
7493 | (templ_func->n_template_arguments * sizeof (struct symbol *))); | |
7494 | VEC_free (symbolp, template_args); | |
7495 | } | |
7496 | ||
208d8187 JB |
7497 | /* In C++, we can have functions nested inside functions (e.g., when |
7498 | a function declares a class that has methods). This means that | |
7499 | when we finish processing a function scope, we may need to go | |
7500 | back to building a containing block's symbol lists. */ | |
7501 | local_symbols = new->locals; | |
7502 | param_symbols = new->params; | |
27aa8d6a | 7503 | using_directives = new->using_directives; |
208d8187 | 7504 | |
921e78cf JB |
7505 | /* If we've finished processing a top-level function, subsequent |
7506 | symbols go in the file symbol list. */ | |
7507 | if (outermost_context_p ()) | |
e142c38c | 7508 | cu->list_in_scope = &file_symbols; |
c906108c SS |
7509 | } |
7510 | ||
7511 | /* Process all the DIES contained within a lexical block scope. Start | |
7512 | a new scope, process the dies, and then close the scope. */ | |
7513 | ||
7514 | static void | |
e7c27a73 | 7515 | read_lexical_block_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 7516 | { |
e7c27a73 | 7517 | struct objfile *objfile = cu->objfile; |
52f0bd74 | 7518 | struct context_stack *new; |
c906108c SS |
7519 | CORE_ADDR lowpc, highpc; |
7520 | struct die_info *child_die; | |
e142c38c DJ |
7521 | CORE_ADDR baseaddr; |
7522 | ||
7523 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c SS |
7524 | |
7525 | /* Ignore blocks with missing or invalid low and high pc attributes. */ | |
af34e669 DJ |
7526 | /* ??? Perhaps consider discontiguous blocks defined by DW_AT_ranges |
7527 | as multiple lexical blocks? Handling children in a sane way would | |
6e70227d | 7528 | be nasty. Might be easier to properly extend generic blocks to |
af34e669 | 7529 | describe ranges. */ |
d85a05f0 | 7530 | if (!dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL)) |
c906108c SS |
7531 | return; |
7532 | lowpc += baseaddr; | |
7533 | highpc += baseaddr; | |
7534 | ||
7535 | push_context (0, lowpc); | |
639d11d3 | 7536 | if (die->child != NULL) |
c906108c | 7537 | { |
639d11d3 | 7538 | child_die = die->child; |
c906108c SS |
7539 | while (child_die && child_die->tag) |
7540 | { | |
e7c27a73 | 7541 | process_die (child_die, cu); |
c906108c SS |
7542 | child_die = sibling_die (child_die); |
7543 | } | |
7544 | } | |
7545 | new = pop_context (); | |
7546 | ||
8540c487 | 7547 | if (local_symbols != NULL || using_directives != NULL) |
c906108c | 7548 | { |
801e3a5b JB |
7549 | struct block *block |
7550 | = finish_block (0, &local_symbols, new->old_blocks, new->start_addr, | |
7551 | highpc, objfile); | |
7552 | ||
7553 | /* Note that recording ranges after traversing children, as we | |
7554 | do here, means that recording a parent's ranges entails | |
7555 | walking across all its children's ranges as they appear in | |
7556 | the address map, which is quadratic behavior. | |
7557 | ||
7558 | It would be nicer to record the parent's ranges before | |
7559 | traversing its children, simply overriding whatever you find | |
7560 | there. But since we don't even decide whether to create a | |
7561 | block until after we've traversed its children, that's hard | |
7562 | to do. */ | |
7563 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
c906108c SS |
7564 | } |
7565 | local_symbols = new->locals; | |
27aa8d6a | 7566 | using_directives = new->using_directives; |
c906108c SS |
7567 | } |
7568 | ||
96408a79 SA |
7569 | /* Read in DW_TAG_GNU_call_site and insert it to CU->call_site_htab. */ |
7570 | ||
7571 | static void | |
7572 | read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu) | |
7573 | { | |
7574 | struct objfile *objfile = cu->objfile; | |
7575 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
7576 | CORE_ADDR pc, baseaddr; | |
7577 | struct attribute *attr; | |
7578 | struct call_site *call_site, call_site_local; | |
7579 | void **slot; | |
7580 | int nparams; | |
7581 | struct die_info *child_die; | |
7582 | ||
7583 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
7584 | ||
7585 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
7586 | if (!attr) | |
7587 | { | |
7588 | complaint (&symfile_complaints, | |
7589 | _("missing DW_AT_low_pc for DW_TAG_GNU_call_site " | |
7590 | "DIE 0x%x [in module %s]"), | |
b64f50a1 | 7591 | die->offset.sect_off, objfile->name); |
96408a79 SA |
7592 | return; |
7593 | } | |
7594 | pc = DW_ADDR (attr) + baseaddr; | |
7595 | ||
7596 | if (cu->call_site_htab == NULL) | |
7597 | cu->call_site_htab = htab_create_alloc_ex (16, core_addr_hash, core_addr_eq, | |
7598 | NULL, &objfile->objfile_obstack, | |
7599 | hashtab_obstack_allocate, NULL); | |
7600 | call_site_local.pc = pc; | |
7601 | slot = htab_find_slot (cu->call_site_htab, &call_site_local, INSERT); | |
7602 | if (*slot != NULL) | |
7603 | { | |
7604 | complaint (&symfile_complaints, | |
7605 | _("Duplicate PC %s for DW_TAG_GNU_call_site " | |
7606 | "DIE 0x%x [in module %s]"), | |
b64f50a1 | 7607 | paddress (gdbarch, pc), die->offset.sect_off, objfile->name); |
96408a79 SA |
7608 | return; |
7609 | } | |
7610 | ||
7611 | /* Count parameters at the caller. */ | |
7612 | ||
7613 | nparams = 0; | |
7614 | for (child_die = die->child; child_die && child_die->tag; | |
7615 | child_die = sibling_die (child_die)) | |
7616 | { | |
7617 | if (child_die->tag != DW_TAG_GNU_call_site_parameter) | |
7618 | { | |
7619 | complaint (&symfile_complaints, | |
7620 | _("Tag %d is not DW_TAG_GNU_call_site_parameter in " | |
7621 | "DW_TAG_GNU_call_site child DIE 0x%x [in module %s]"), | |
b64f50a1 | 7622 | child_die->tag, child_die->offset.sect_off, objfile->name); |
96408a79 SA |
7623 | continue; |
7624 | } | |
7625 | ||
7626 | nparams++; | |
7627 | } | |
7628 | ||
7629 | call_site = obstack_alloc (&objfile->objfile_obstack, | |
7630 | (sizeof (*call_site) | |
7631 | + (sizeof (*call_site->parameter) | |
7632 | * (nparams - 1)))); | |
7633 | *slot = call_site; | |
7634 | memset (call_site, 0, sizeof (*call_site) - sizeof (*call_site->parameter)); | |
7635 | call_site->pc = pc; | |
7636 | ||
7637 | if (dwarf2_flag_true_p (die, DW_AT_GNU_tail_call, cu)) | |
7638 | { | |
7639 | struct die_info *func_die; | |
7640 | ||
7641 | /* Skip also over DW_TAG_inlined_subroutine. */ | |
7642 | for (func_die = die->parent; | |
7643 | func_die && func_die->tag != DW_TAG_subprogram | |
7644 | && func_die->tag != DW_TAG_subroutine_type; | |
7645 | func_die = func_die->parent); | |
7646 | ||
7647 | /* DW_AT_GNU_all_call_sites is a superset | |
7648 | of DW_AT_GNU_all_tail_call_sites. */ | |
7649 | if (func_die | |
7650 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_call_sites, cu) | |
7651 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_tail_call_sites, cu)) | |
7652 | { | |
7653 | /* TYPE_TAIL_CALL_LIST is not interesting in functions where it is | |
7654 | not complete. But keep CALL_SITE for look ups via call_site_htab, | |
7655 | both the initial caller containing the real return address PC and | |
7656 | the final callee containing the current PC of a chain of tail | |
7657 | calls do not need to have the tail call list complete. But any | |
7658 | function candidate for a virtual tail call frame searched via | |
7659 | TYPE_TAIL_CALL_LIST must have the tail call list complete to be | |
7660 | determined unambiguously. */ | |
7661 | } | |
7662 | else | |
7663 | { | |
7664 | struct type *func_type = NULL; | |
7665 | ||
7666 | if (func_die) | |
7667 | func_type = get_die_type (func_die, cu); | |
7668 | if (func_type != NULL) | |
7669 | { | |
7670 | gdb_assert (TYPE_CODE (func_type) == TYPE_CODE_FUNC); | |
7671 | ||
7672 | /* Enlist this call site to the function. */ | |
7673 | call_site->tail_call_next = TYPE_TAIL_CALL_LIST (func_type); | |
7674 | TYPE_TAIL_CALL_LIST (func_type) = call_site; | |
7675 | } | |
7676 | else | |
7677 | complaint (&symfile_complaints, | |
7678 | _("Cannot find function owning DW_TAG_GNU_call_site " | |
7679 | "DIE 0x%x [in module %s]"), | |
b64f50a1 | 7680 | die->offset.sect_off, objfile->name); |
96408a79 SA |
7681 | } |
7682 | } | |
7683 | ||
7684 | attr = dwarf2_attr (die, DW_AT_GNU_call_site_target, cu); | |
7685 | if (attr == NULL) | |
7686 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
7687 | SET_FIELD_DWARF_BLOCK (call_site->target, NULL); | |
7688 | if (!attr || (attr_form_is_block (attr) && DW_BLOCK (attr)->size == 0)) | |
7689 | /* Keep NULL DWARF_BLOCK. */; | |
7690 | else if (attr_form_is_block (attr)) | |
7691 | { | |
7692 | struct dwarf2_locexpr_baton *dlbaton; | |
7693 | ||
7694 | dlbaton = obstack_alloc (&objfile->objfile_obstack, sizeof (*dlbaton)); | |
7695 | dlbaton->data = DW_BLOCK (attr)->data; | |
7696 | dlbaton->size = DW_BLOCK (attr)->size; | |
7697 | dlbaton->per_cu = cu->per_cu; | |
7698 | ||
7699 | SET_FIELD_DWARF_BLOCK (call_site->target, dlbaton); | |
7700 | } | |
7701 | else if (is_ref_attr (attr)) | |
7702 | { | |
96408a79 SA |
7703 | struct dwarf2_cu *target_cu = cu; |
7704 | struct die_info *target_die; | |
7705 | ||
7706 | target_die = follow_die_ref_or_sig (die, attr, &target_cu); | |
7707 | gdb_assert (target_cu->objfile == objfile); | |
7708 | if (die_is_declaration (target_die, target_cu)) | |
7709 | { | |
7710 | const char *target_physname; | |
7711 | ||
7712 | target_physname = dwarf2_physname (NULL, target_die, target_cu); | |
7713 | if (target_physname == NULL) | |
7714 | complaint (&symfile_complaints, | |
7715 | _("DW_AT_GNU_call_site_target target DIE has invalid " | |
7716 | "physname, for referencing DIE 0x%x [in module %s]"), | |
b64f50a1 | 7717 | die->offset.sect_off, objfile->name); |
96408a79 SA |
7718 | else |
7719 | SET_FIELD_PHYSNAME (call_site->target, (char *) target_physname); | |
7720 | } | |
7721 | else | |
7722 | { | |
7723 | CORE_ADDR lowpc; | |
7724 | ||
7725 | /* DW_AT_entry_pc should be preferred. */ | |
7726 | if (!dwarf2_get_pc_bounds (target_die, &lowpc, NULL, target_cu, NULL)) | |
7727 | complaint (&symfile_complaints, | |
7728 | _("DW_AT_GNU_call_site_target target DIE has invalid " | |
7729 | "low pc, for referencing DIE 0x%x [in module %s]"), | |
b64f50a1 | 7730 | die->offset.sect_off, objfile->name); |
96408a79 SA |
7731 | else |
7732 | SET_FIELD_PHYSADDR (call_site->target, lowpc + baseaddr); | |
7733 | } | |
7734 | } | |
7735 | else | |
7736 | complaint (&symfile_complaints, | |
7737 | _("DW_TAG_GNU_call_site DW_AT_GNU_call_site_target is neither " | |
7738 | "block nor reference, for DIE 0x%x [in module %s]"), | |
b64f50a1 | 7739 | die->offset.sect_off, objfile->name); |
96408a79 SA |
7740 | |
7741 | call_site->per_cu = cu->per_cu; | |
7742 | ||
7743 | for (child_die = die->child; | |
7744 | child_die && child_die->tag; | |
7745 | child_die = sibling_die (child_die)) | |
7746 | { | |
7747 | struct dwarf2_locexpr_baton *dlbaton; | |
7748 | struct call_site_parameter *parameter; | |
7749 | ||
7750 | if (child_die->tag != DW_TAG_GNU_call_site_parameter) | |
7751 | { | |
7752 | /* Already printed the complaint above. */ | |
7753 | continue; | |
7754 | } | |
7755 | ||
7756 | gdb_assert (call_site->parameter_count < nparams); | |
7757 | parameter = &call_site->parameter[call_site->parameter_count]; | |
7758 | ||
7759 | /* DW_AT_location specifies the register number. Value of the data | |
7760 | assumed for the register is contained in DW_AT_GNU_call_site_value. */ | |
7761 | ||
7762 | attr = dwarf2_attr (child_die, DW_AT_location, cu); | |
7763 | if (!attr || !attr_form_is_block (attr)) | |
7764 | { | |
7765 | complaint (&symfile_complaints, | |
7766 | _("No DW_FORM_block* DW_AT_location for " | |
7767 | "DW_TAG_GNU_call_site child DIE 0x%x [in module %s]"), | |
b64f50a1 | 7768 | child_die->offset.sect_off, objfile->name); |
96408a79 SA |
7769 | continue; |
7770 | } | |
7771 | parameter->dwarf_reg = dwarf_block_to_dwarf_reg (DW_BLOCK (attr)->data, | |
7772 | &DW_BLOCK (attr)->data[DW_BLOCK (attr)->size]); | |
7773 | if (parameter->dwarf_reg == -1 | |
7774 | && !dwarf_block_to_sp_offset (gdbarch, DW_BLOCK (attr)->data, | |
7775 | &DW_BLOCK (attr)->data[DW_BLOCK (attr)->size], | |
7776 | ¶meter->fb_offset)) | |
7777 | { | |
7778 | complaint (&symfile_complaints, | |
7779 | _("Only single DW_OP_reg or DW_OP_fbreg is supported " | |
7780 | "for DW_FORM_block* DW_AT_location for " | |
7781 | "DW_TAG_GNU_call_site child DIE 0x%x [in module %s]"), | |
b64f50a1 | 7782 | child_die->offset.sect_off, objfile->name); |
96408a79 SA |
7783 | continue; |
7784 | } | |
7785 | ||
7786 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_value, cu); | |
7787 | if (!attr_form_is_block (attr)) | |
7788 | { | |
7789 | complaint (&symfile_complaints, | |
7790 | _("No DW_FORM_block* DW_AT_GNU_call_site_value for " | |
7791 | "DW_TAG_GNU_call_site child DIE 0x%x [in module %s]"), | |
b64f50a1 | 7792 | child_die->offset.sect_off, objfile->name); |
96408a79 SA |
7793 | continue; |
7794 | } | |
7795 | parameter->value = DW_BLOCK (attr)->data; | |
7796 | parameter->value_size = DW_BLOCK (attr)->size; | |
7797 | ||
7798 | /* Parameters are not pre-cleared by memset above. */ | |
7799 | parameter->data_value = NULL; | |
7800 | parameter->data_value_size = 0; | |
7801 | call_site->parameter_count++; | |
7802 | ||
7803 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_data_value, cu); | |
7804 | if (attr) | |
7805 | { | |
7806 | if (!attr_form_is_block (attr)) | |
7807 | complaint (&symfile_complaints, | |
7808 | _("No DW_FORM_block* DW_AT_GNU_call_site_data_value for " | |
7809 | "DW_TAG_GNU_call_site child DIE 0x%x [in module %s]"), | |
b64f50a1 | 7810 | child_die->offset.sect_off, objfile->name); |
96408a79 SA |
7811 | else |
7812 | { | |
7813 | parameter->data_value = DW_BLOCK (attr)->data; | |
7814 | parameter->data_value_size = DW_BLOCK (attr)->size; | |
7815 | } | |
7816 | } | |
7817 | } | |
7818 | } | |
7819 | ||
43039443 | 7820 | /* Get low and high pc attributes from DW_AT_ranges attribute value OFFSET. |
ff013f42 JK |
7821 | Return 1 if the attributes are present and valid, otherwise, return 0. |
7822 | If RANGES_PST is not NULL we should setup `objfile->psymtabs_addrmap'. */ | |
43039443 JK |
7823 | |
7824 | static int | |
7825 | dwarf2_ranges_read (unsigned offset, CORE_ADDR *low_return, | |
ff013f42 JK |
7826 | CORE_ADDR *high_return, struct dwarf2_cu *cu, |
7827 | struct partial_symtab *ranges_pst) | |
43039443 JK |
7828 | { |
7829 | struct objfile *objfile = cu->objfile; | |
7830 | struct comp_unit_head *cu_header = &cu->header; | |
7831 | bfd *obfd = objfile->obfd; | |
7832 | unsigned int addr_size = cu_header->addr_size; | |
7833 | CORE_ADDR mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
7834 | /* Base address selection entry. */ | |
7835 | CORE_ADDR base; | |
7836 | int found_base; | |
7837 | unsigned int dummy; | |
7838 | gdb_byte *buffer; | |
7839 | CORE_ADDR marker; | |
7840 | int low_set; | |
7841 | CORE_ADDR low = 0; | |
7842 | CORE_ADDR high = 0; | |
ff013f42 | 7843 | CORE_ADDR baseaddr; |
43039443 | 7844 | |
d00adf39 DE |
7845 | found_base = cu->base_known; |
7846 | base = cu->base_address; | |
43039443 | 7847 | |
be391dca | 7848 | dwarf2_read_section (objfile, &dwarf2_per_objfile->ranges); |
dce234bc | 7849 | if (offset >= dwarf2_per_objfile->ranges.size) |
43039443 JK |
7850 | { |
7851 | complaint (&symfile_complaints, | |
7852 | _("Offset %d out of bounds for DW_AT_ranges attribute"), | |
7853 | offset); | |
7854 | return 0; | |
7855 | } | |
dce234bc | 7856 | buffer = dwarf2_per_objfile->ranges.buffer + offset; |
43039443 JK |
7857 | |
7858 | /* Read in the largest possible address. */ | |
7859 | marker = read_address (obfd, buffer, cu, &dummy); | |
7860 | if ((marker & mask) == mask) | |
7861 | { | |
7862 | /* If we found the largest possible address, then | |
7863 | read the base address. */ | |
7864 | base = read_address (obfd, buffer + addr_size, cu, &dummy); | |
7865 | buffer += 2 * addr_size; | |
7866 | offset += 2 * addr_size; | |
7867 | found_base = 1; | |
7868 | } | |
7869 | ||
7870 | low_set = 0; | |
7871 | ||
e7030f15 | 7872 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
ff013f42 | 7873 | |
43039443 JK |
7874 | while (1) |
7875 | { | |
7876 | CORE_ADDR range_beginning, range_end; | |
7877 | ||
7878 | range_beginning = read_address (obfd, buffer, cu, &dummy); | |
7879 | buffer += addr_size; | |
7880 | range_end = read_address (obfd, buffer, cu, &dummy); | |
7881 | buffer += addr_size; | |
7882 | offset += 2 * addr_size; | |
7883 | ||
7884 | /* An end of list marker is a pair of zero addresses. */ | |
7885 | if (range_beginning == 0 && range_end == 0) | |
7886 | /* Found the end of list entry. */ | |
7887 | break; | |
7888 | ||
7889 | /* Each base address selection entry is a pair of 2 values. | |
7890 | The first is the largest possible address, the second is | |
7891 | the base address. Check for a base address here. */ | |
7892 | if ((range_beginning & mask) == mask) | |
7893 | { | |
7894 | /* If we found the largest possible address, then | |
7895 | read the base address. */ | |
7896 | base = read_address (obfd, buffer + addr_size, cu, &dummy); | |
7897 | found_base = 1; | |
7898 | continue; | |
7899 | } | |
7900 | ||
7901 | if (!found_base) | |
7902 | { | |
7903 | /* We have no valid base address for the ranges | |
7904 | data. */ | |
7905 | complaint (&symfile_complaints, | |
7906 | _("Invalid .debug_ranges data (no base address)")); | |
7907 | return 0; | |
7908 | } | |
7909 | ||
9277c30c UW |
7910 | if (range_beginning > range_end) |
7911 | { | |
7912 | /* Inverted range entries are invalid. */ | |
7913 | complaint (&symfile_complaints, | |
7914 | _("Invalid .debug_ranges data (inverted range)")); | |
7915 | return 0; | |
7916 | } | |
7917 | ||
7918 | /* Empty range entries have no effect. */ | |
7919 | if (range_beginning == range_end) | |
7920 | continue; | |
7921 | ||
43039443 JK |
7922 | range_beginning += base; |
7923 | range_end += base; | |
7924 | ||
9277c30c | 7925 | if (ranges_pst != NULL) |
ff013f42 | 7926 | addrmap_set_empty (objfile->psymtabs_addrmap, |
3e43a32a MS |
7927 | range_beginning + baseaddr, |
7928 | range_end - 1 + baseaddr, | |
ff013f42 JK |
7929 | ranges_pst); |
7930 | ||
43039443 JK |
7931 | /* FIXME: This is recording everything as a low-high |
7932 | segment of consecutive addresses. We should have a | |
7933 | data structure for discontiguous block ranges | |
7934 | instead. */ | |
7935 | if (! low_set) | |
7936 | { | |
7937 | low = range_beginning; | |
7938 | high = range_end; | |
7939 | low_set = 1; | |
7940 | } | |
7941 | else | |
7942 | { | |
7943 | if (range_beginning < low) | |
7944 | low = range_beginning; | |
7945 | if (range_end > high) | |
7946 | high = range_end; | |
7947 | } | |
7948 | } | |
7949 | ||
7950 | if (! low_set) | |
7951 | /* If the first entry is an end-of-list marker, the range | |
7952 | describes an empty scope, i.e. no instructions. */ | |
7953 | return 0; | |
7954 | ||
7955 | if (low_return) | |
7956 | *low_return = low; | |
7957 | if (high_return) | |
7958 | *high_return = high; | |
7959 | return 1; | |
7960 | } | |
7961 | ||
af34e669 DJ |
7962 | /* Get low and high pc attributes from a die. Return 1 if the attributes |
7963 | are present and valid, otherwise, return 0. Return -1 if the range is | |
7964 | discontinuous, i.e. derived from DW_AT_ranges information. */ | |
380bca97 | 7965 | |
c906108c | 7966 | static int |
af34e669 | 7967 | dwarf2_get_pc_bounds (struct die_info *die, CORE_ADDR *lowpc, |
d85a05f0 DJ |
7968 | CORE_ADDR *highpc, struct dwarf2_cu *cu, |
7969 | struct partial_symtab *pst) | |
c906108c SS |
7970 | { |
7971 | struct attribute *attr; | |
91da1414 | 7972 | struct attribute *attr_high; |
af34e669 DJ |
7973 | CORE_ADDR low = 0; |
7974 | CORE_ADDR high = 0; | |
7975 | int ret = 0; | |
c906108c | 7976 | |
91da1414 MW |
7977 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
7978 | if (attr_high) | |
af34e669 | 7979 | { |
e142c38c | 7980 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
af34e669 | 7981 | if (attr) |
91da1414 MW |
7982 | { |
7983 | low = DW_ADDR (attr); | |
3019eac3 DE |
7984 | if (attr_high->form == DW_FORM_addr |
7985 | || attr_high->form == DW_FORM_GNU_addr_index) | |
91da1414 MW |
7986 | high = DW_ADDR (attr_high); |
7987 | else | |
7988 | high = low + DW_UNSND (attr_high); | |
7989 | } | |
af34e669 DJ |
7990 | else |
7991 | /* Found high w/o low attribute. */ | |
7992 | return 0; | |
7993 | ||
7994 | /* Found consecutive range of addresses. */ | |
7995 | ret = 1; | |
7996 | } | |
c906108c | 7997 | else |
af34e669 | 7998 | { |
e142c38c | 7999 | attr = dwarf2_attr (die, DW_AT_ranges, cu); |
af34e669 DJ |
8000 | if (attr != NULL) |
8001 | { | |
af34e669 | 8002 | /* Value of the DW_AT_ranges attribute is the offset in the |
a604369a | 8003 | .debug_ranges section. */ |
d85a05f0 | 8004 | if (!dwarf2_ranges_read (DW_UNSND (attr), &low, &high, cu, pst)) |
af34e669 | 8005 | return 0; |
43039443 | 8006 | /* Found discontinuous range of addresses. */ |
af34e669 DJ |
8007 | ret = -1; |
8008 | } | |
8009 | } | |
c906108c | 8010 | |
9373cf26 JK |
8011 | /* read_partial_die has also the strict LOW < HIGH requirement. */ |
8012 | if (high <= low) | |
c906108c SS |
8013 | return 0; |
8014 | ||
8015 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
8016 | eliminate duplicate copies of functions and vtables and such. | |
8017 | The linker will arbitrarily choose one and discard the others. | |
8018 | The AT_*_pc values for such functions refer to local labels in | |
8019 | these sections. If the section from that file was discarded, the | |
8020 | labels are not in the output, so the relocs get a value of 0. | |
8021 | If this is a discarded function, mark the pc bounds as invalid, | |
8022 | so that GDB will ignore it. */ | |
72dca2f5 | 8023 | if (low == 0 && !dwarf2_per_objfile->has_section_at_zero) |
c906108c SS |
8024 | return 0; |
8025 | ||
8026 | *lowpc = low; | |
96408a79 SA |
8027 | if (highpc) |
8028 | *highpc = high; | |
af34e669 | 8029 | return ret; |
c906108c SS |
8030 | } |
8031 | ||
b084d499 JB |
8032 | /* Assuming that DIE represents a subprogram DIE or a lexical block, get |
8033 | its low and high PC addresses. Do nothing if these addresses could not | |
8034 | be determined. Otherwise, set LOWPC to the low address if it is smaller, | |
8035 | and HIGHPC to the high address if greater than HIGHPC. */ | |
8036 | ||
8037 | static void | |
8038 | dwarf2_get_subprogram_pc_bounds (struct die_info *die, | |
8039 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
8040 | struct dwarf2_cu *cu) | |
8041 | { | |
8042 | CORE_ADDR low, high; | |
8043 | struct die_info *child = die->child; | |
8044 | ||
d85a05f0 | 8045 | if (dwarf2_get_pc_bounds (die, &low, &high, cu, NULL)) |
b084d499 JB |
8046 | { |
8047 | *lowpc = min (*lowpc, low); | |
8048 | *highpc = max (*highpc, high); | |
8049 | } | |
8050 | ||
8051 | /* If the language does not allow nested subprograms (either inside | |
8052 | subprograms or lexical blocks), we're done. */ | |
8053 | if (cu->language != language_ada) | |
8054 | return; | |
6e70227d | 8055 | |
b084d499 JB |
8056 | /* Check all the children of the given DIE. If it contains nested |
8057 | subprograms, then check their pc bounds. Likewise, we need to | |
8058 | check lexical blocks as well, as they may also contain subprogram | |
8059 | definitions. */ | |
8060 | while (child && child->tag) | |
8061 | { | |
8062 | if (child->tag == DW_TAG_subprogram | |
8063 | || child->tag == DW_TAG_lexical_block) | |
8064 | dwarf2_get_subprogram_pc_bounds (child, lowpc, highpc, cu); | |
8065 | child = sibling_die (child); | |
8066 | } | |
8067 | } | |
8068 | ||
fae299cd DC |
8069 | /* Get the low and high pc's represented by the scope DIE, and store |
8070 | them in *LOWPC and *HIGHPC. If the correct values can't be | |
8071 | determined, set *LOWPC to -1 and *HIGHPC to 0. */ | |
8072 | ||
8073 | static void | |
8074 | get_scope_pc_bounds (struct die_info *die, | |
8075 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
8076 | struct dwarf2_cu *cu) | |
8077 | { | |
8078 | CORE_ADDR best_low = (CORE_ADDR) -1; | |
8079 | CORE_ADDR best_high = (CORE_ADDR) 0; | |
8080 | CORE_ADDR current_low, current_high; | |
8081 | ||
d85a05f0 | 8082 | if (dwarf2_get_pc_bounds (die, ¤t_low, ¤t_high, cu, NULL)) |
fae299cd DC |
8083 | { |
8084 | best_low = current_low; | |
8085 | best_high = current_high; | |
8086 | } | |
8087 | else | |
8088 | { | |
8089 | struct die_info *child = die->child; | |
8090 | ||
8091 | while (child && child->tag) | |
8092 | { | |
8093 | switch (child->tag) { | |
8094 | case DW_TAG_subprogram: | |
b084d499 | 8095 | dwarf2_get_subprogram_pc_bounds (child, &best_low, &best_high, cu); |
fae299cd DC |
8096 | break; |
8097 | case DW_TAG_namespace: | |
f55ee35c | 8098 | case DW_TAG_module: |
fae299cd DC |
8099 | /* FIXME: carlton/2004-01-16: Should we do this for |
8100 | DW_TAG_class_type/DW_TAG_structure_type, too? I think | |
8101 | that current GCC's always emit the DIEs corresponding | |
8102 | to definitions of methods of classes as children of a | |
8103 | DW_TAG_compile_unit or DW_TAG_namespace (as opposed to | |
8104 | the DIEs giving the declarations, which could be | |
8105 | anywhere). But I don't see any reason why the | |
8106 | standards says that they have to be there. */ | |
8107 | get_scope_pc_bounds (child, ¤t_low, ¤t_high, cu); | |
8108 | ||
8109 | if (current_low != ((CORE_ADDR) -1)) | |
8110 | { | |
8111 | best_low = min (best_low, current_low); | |
8112 | best_high = max (best_high, current_high); | |
8113 | } | |
8114 | break; | |
8115 | default: | |
0963b4bd | 8116 | /* Ignore. */ |
fae299cd DC |
8117 | break; |
8118 | } | |
8119 | ||
8120 | child = sibling_die (child); | |
8121 | } | |
8122 | } | |
8123 | ||
8124 | *lowpc = best_low; | |
8125 | *highpc = best_high; | |
8126 | } | |
8127 | ||
801e3a5b JB |
8128 | /* Record the address ranges for BLOCK, offset by BASEADDR, as given |
8129 | in DIE. */ | |
380bca97 | 8130 | |
801e3a5b JB |
8131 | static void |
8132 | dwarf2_record_block_ranges (struct die_info *die, struct block *block, | |
8133 | CORE_ADDR baseaddr, struct dwarf2_cu *cu) | |
8134 | { | |
bb5ed363 | 8135 | struct objfile *objfile = cu->objfile; |
801e3a5b | 8136 | struct attribute *attr; |
91da1414 | 8137 | struct attribute *attr_high; |
801e3a5b | 8138 | |
91da1414 MW |
8139 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
8140 | if (attr_high) | |
801e3a5b | 8141 | { |
801e3a5b JB |
8142 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
8143 | if (attr) | |
8144 | { | |
8145 | CORE_ADDR low = DW_ADDR (attr); | |
91da1414 | 8146 | CORE_ADDR high; |
3019eac3 DE |
8147 | if (attr_high->form == DW_FORM_addr |
8148 | || attr_high->form == DW_FORM_GNU_addr_index) | |
91da1414 MW |
8149 | high = DW_ADDR (attr_high); |
8150 | else | |
8151 | high = low + DW_UNSND (attr_high); | |
9a619af0 | 8152 | |
801e3a5b JB |
8153 | record_block_range (block, baseaddr + low, baseaddr + high - 1); |
8154 | } | |
8155 | } | |
8156 | ||
8157 | attr = dwarf2_attr (die, DW_AT_ranges, cu); | |
8158 | if (attr) | |
8159 | { | |
bb5ed363 | 8160 | bfd *obfd = objfile->obfd; |
801e3a5b JB |
8161 | |
8162 | /* The value of the DW_AT_ranges attribute is the offset of the | |
8163 | address range list in the .debug_ranges section. */ | |
8164 | unsigned long offset = DW_UNSND (attr); | |
dce234bc | 8165 | gdb_byte *buffer = dwarf2_per_objfile->ranges.buffer + offset; |
801e3a5b JB |
8166 | |
8167 | /* For some target architectures, but not others, the | |
8168 | read_address function sign-extends the addresses it returns. | |
8169 | To recognize base address selection entries, we need a | |
8170 | mask. */ | |
8171 | unsigned int addr_size = cu->header.addr_size; | |
8172 | CORE_ADDR base_select_mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
8173 | ||
8174 | /* The base address, to which the next pair is relative. Note | |
8175 | that this 'base' is a DWARF concept: most entries in a range | |
8176 | list are relative, to reduce the number of relocs against the | |
8177 | debugging information. This is separate from this function's | |
8178 | 'baseaddr' argument, which GDB uses to relocate debugging | |
8179 | information from a shared library based on the address at | |
8180 | which the library was loaded. */ | |
d00adf39 DE |
8181 | CORE_ADDR base = cu->base_address; |
8182 | int base_known = cu->base_known; | |
801e3a5b | 8183 | |
be391dca | 8184 | gdb_assert (dwarf2_per_objfile->ranges.readin); |
dce234bc | 8185 | if (offset >= dwarf2_per_objfile->ranges.size) |
801e3a5b JB |
8186 | { |
8187 | complaint (&symfile_complaints, | |
8188 | _("Offset %lu out of bounds for DW_AT_ranges attribute"), | |
8189 | offset); | |
8190 | return; | |
8191 | } | |
8192 | ||
8193 | for (;;) | |
8194 | { | |
8195 | unsigned int bytes_read; | |
8196 | CORE_ADDR start, end; | |
8197 | ||
8198 | start = read_address (obfd, buffer, cu, &bytes_read); | |
8199 | buffer += bytes_read; | |
8200 | end = read_address (obfd, buffer, cu, &bytes_read); | |
8201 | buffer += bytes_read; | |
8202 | ||
8203 | /* Did we find the end of the range list? */ | |
8204 | if (start == 0 && end == 0) | |
8205 | break; | |
8206 | ||
8207 | /* Did we find a base address selection entry? */ | |
8208 | else if ((start & base_select_mask) == base_select_mask) | |
8209 | { | |
8210 | base = end; | |
8211 | base_known = 1; | |
8212 | } | |
8213 | ||
8214 | /* We found an ordinary address range. */ | |
8215 | else | |
8216 | { | |
8217 | if (!base_known) | |
8218 | { | |
8219 | complaint (&symfile_complaints, | |
3e43a32a MS |
8220 | _("Invalid .debug_ranges data " |
8221 | "(no base address)")); | |
801e3a5b JB |
8222 | return; |
8223 | } | |
8224 | ||
9277c30c UW |
8225 | if (start > end) |
8226 | { | |
8227 | /* Inverted range entries are invalid. */ | |
8228 | complaint (&symfile_complaints, | |
8229 | _("Invalid .debug_ranges data " | |
8230 | "(inverted range)")); | |
8231 | return; | |
8232 | } | |
8233 | ||
8234 | /* Empty range entries have no effect. */ | |
8235 | if (start == end) | |
8236 | continue; | |
8237 | ||
6e70227d DE |
8238 | record_block_range (block, |
8239 | baseaddr + base + start, | |
801e3a5b JB |
8240 | baseaddr + base + end - 1); |
8241 | } | |
8242 | } | |
8243 | } | |
8244 | } | |
8245 | ||
60d5a603 JK |
8246 | /* Check for GCC PR debug/45124 fix which is not present in any G++ version up |
8247 | to 4.5.any while it is present already in G++ 4.6.0 - the PR has been fixed | |
8248 | during 4.6.0 experimental. */ | |
8249 | ||
8250 | static int | |
8251 | producer_is_gxx_lt_4_6 (struct dwarf2_cu *cu) | |
8252 | { | |
8253 | const char *cs; | |
8254 | int major, minor, release; | |
ba919b58 | 8255 | int result = 0; |
60d5a603 JK |
8256 | |
8257 | if (cu->producer == NULL) | |
8258 | { | |
8259 | /* For unknown compilers expect their behavior is DWARF version | |
8260 | compliant. | |
8261 | ||
8262 | GCC started to support .debug_types sections by -gdwarf-4 since | |
8263 | gcc-4.5.x. As the .debug_types sections are missing DW_AT_producer | |
8264 | for their space efficiency GDB cannot workaround gcc-4.5.x -gdwarf-4 | |
8265 | combination. gcc-4.5.x -gdwarf-4 binaries have DW_AT_accessibility | |
8266 | interpreted incorrectly by GDB now - GCC PR debug/48229. */ | |
8267 | ||
8268 | return 0; | |
8269 | } | |
8270 | ||
ba919b58 TT |
8271 | if (cu->checked_producer) |
8272 | return cu->producer_is_gxx_lt_4_6; | |
8273 | ||
60d5a603 JK |
8274 | /* Skip any identifier after "GNU " - such as "C++" or "Java". */ |
8275 | ||
8276 | if (strncmp (cu->producer, "GNU ", strlen ("GNU ")) != 0) | |
8277 | { | |
8278 | /* For non-GCC compilers expect their behavior is DWARF version | |
8279 | compliant. */ | |
60d5a603 | 8280 | } |
ba919b58 | 8281 | else |
60d5a603 | 8282 | { |
ba919b58 TT |
8283 | cs = &cu->producer[strlen ("GNU ")]; |
8284 | while (*cs && !isdigit (*cs)) | |
8285 | cs++; | |
8286 | if (sscanf (cs, "%d.%d.%d", &major, &minor, &release) != 3) | |
8287 | { | |
8288 | /* Not recognized as GCC. */ | |
8289 | } | |
8290 | else | |
8291 | result = major < 4 || (major == 4 && minor < 6); | |
60d5a603 JK |
8292 | } |
8293 | ||
ba919b58 TT |
8294 | cu->checked_producer = 1; |
8295 | cu->producer_is_gxx_lt_4_6 = result; | |
8296 | ||
8297 | return result; | |
60d5a603 JK |
8298 | } |
8299 | ||
8300 | /* Return the default accessibility type if it is not overriden by | |
8301 | DW_AT_accessibility. */ | |
8302 | ||
8303 | static enum dwarf_access_attribute | |
8304 | dwarf2_default_access_attribute (struct die_info *die, struct dwarf2_cu *cu) | |
8305 | { | |
8306 | if (cu->header.version < 3 || producer_is_gxx_lt_4_6 (cu)) | |
8307 | { | |
8308 | /* The default DWARF 2 accessibility for members is public, the default | |
8309 | accessibility for inheritance is private. */ | |
8310 | ||
8311 | if (die->tag != DW_TAG_inheritance) | |
8312 | return DW_ACCESS_public; | |
8313 | else | |
8314 | return DW_ACCESS_private; | |
8315 | } | |
8316 | else | |
8317 | { | |
8318 | /* DWARF 3+ defines the default accessibility a different way. The same | |
8319 | rules apply now for DW_TAG_inheritance as for the members and it only | |
8320 | depends on the container kind. */ | |
8321 | ||
8322 | if (die->parent->tag == DW_TAG_class_type) | |
8323 | return DW_ACCESS_private; | |
8324 | else | |
8325 | return DW_ACCESS_public; | |
8326 | } | |
8327 | } | |
8328 | ||
74ac6d43 TT |
8329 | /* Look for DW_AT_data_member_location. Set *OFFSET to the byte |
8330 | offset. If the attribute was not found return 0, otherwise return | |
8331 | 1. If it was found but could not properly be handled, set *OFFSET | |
8332 | to 0. */ | |
8333 | ||
8334 | static int | |
8335 | handle_data_member_location (struct die_info *die, struct dwarf2_cu *cu, | |
8336 | LONGEST *offset) | |
8337 | { | |
8338 | struct attribute *attr; | |
8339 | ||
8340 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); | |
8341 | if (attr != NULL) | |
8342 | { | |
8343 | *offset = 0; | |
8344 | ||
8345 | /* Note that we do not check for a section offset first here. | |
8346 | This is because DW_AT_data_member_location is new in DWARF 4, | |
8347 | so if we see it, we can assume that a constant form is really | |
8348 | a constant and not a section offset. */ | |
8349 | if (attr_form_is_constant (attr)) | |
8350 | *offset = dwarf2_get_attr_constant_value (attr, 0); | |
8351 | else if (attr_form_is_section_offset (attr)) | |
8352 | dwarf2_complex_location_expr_complaint (); | |
8353 | else if (attr_form_is_block (attr)) | |
8354 | *offset = decode_locdesc (DW_BLOCK (attr), cu); | |
8355 | else | |
8356 | dwarf2_complex_location_expr_complaint (); | |
8357 | ||
8358 | return 1; | |
8359 | } | |
8360 | ||
8361 | return 0; | |
8362 | } | |
8363 | ||
c906108c SS |
8364 | /* Add an aggregate field to the field list. */ |
8365 | ||
8366 | static void | |
107d2387 | 8367 | dwarf2_add_field (struct field_info *fip, struct die_info *die, |
e7c27a73 | 8368 | struct dwarf2_cu *cu) |
6e70227d | 8369 | { |
e7c27a73 | 8370 | struct objfile *objfile = cu->objfile; |
5e2b427d | 8371 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
8372 | struct nextfield *new_field; |
8373 | struct attribute *attr; | |
8374 | struct field *fp; | |
8375 | char *fieldname = ""; | |
8376 | ||
8377 | /* Allocate a new field list entry and link it in. */ | |
8378 | new_field = (struct nextfield *) xmalloc (sizeof (struct nextfield)); | |
b8c9b27d | 8379 | make_cleanup (xfree, new_field); |
c906108c | 8380 | memset (new_field, 0, sizeof (struct nextfield)); |
7d0ccb61 DJ |
8381 | |
8382 | if (die->tag == DW_TAG_inheritance) | |
8383 | { | |
8384 | new_field->next = fip->baseclasses; | |
8385 | fip->baseclasses = new_field; | |
8386 | } | |
8387 | else | |
8388 | { | |
8389 | new_field->next = fip->fields; | |
8390 | fip->fields = new_field; | |
8391 | } | |
c906108c SS |
8392 | fip->nfields++; |
8393 | ||
e142c38c | 8394 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c SS |
8395 | if (attr) |
8396 | new_field->accessibility = DW_UNSND (attr); | |
60d5a603 JK |
8397 | else |
8398 | new_field->accessibility = dwarf2_default_access_attribute (die, cu); | |
c906108c SS |
8399 | if (new_field->accessibility != DW_ACCESS_public) |
8400 | fip->non_public_fields = 1; | |
60d5a603 | 8401 | |
e142c38c | 8402 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); |
c906108c SS |
8403 | if (attr) |
8404 | new_field->virtuality = DW_UNSND (attr); | |
60d5a603 JK |
8405 | else |
8406 | new_field->virtuality = DW_VIRTUALITY_none; | |
c906108c SS |
8407 | |
8408 | fp = &new_field->field; | |
a9a9bd0f | 8409 | |
e142c38c | 8410 | if (die->tag == DW_TAG_member && ! die_is_declaration (die, cu)) |
c906108c | 8411 | { |
74ac6d43 TT |
8412 | LONGEST offset; |
8413 | ||
a9a9bd0f | 8414 | /* Data member other than a C++ static data member. */ |
6e70227d | 8415 | |
c906108c | 8416 | /* Get type of field. */ |
e7c27a73 | 8417 | fp->type = die_type (die, cu); |
c906108c | 8418 | |
d6a843b5 | 8419 | SET_FIELD_BITPOS (*fp, 0); |
01ad7f36 | 8420 | |
c906108c | 8421 | /* Get bit size of field (zero if none). */ |
e142c38c | 8422 | attr = dwarf2_attr (die, DW_AT_bit_size, cu); |
c906108c SS |
8423 | if (attr) |
8424 | { | |
8425 | FIELD_BITSIZE (*fp) = DW_UNSND (attr); | |
8426 | } | |
8427 | else | |
8428 | { | |
8429 | FIELD_BITSIZE (*fp) = 0; | |
8430 | } | |
8431 | ||
8432 | /* Get bit offset of field. */ | |
74ac6d43 TT |
8433 | if (handle_data_member_location (die, cu, &offset)) |
8434 | SET_FIELD_BITPOS (*fp, offset * bits_per_byte); | |
e142c38c | 8435 | attr = dwarf2_attr (die, DW_AT_bit_offset, cu); |
c906108c SS |
8436 | if (attr) |
8437 | { | |
5e2b427d | 8438 | if (gdbarch_bits_big_endian (gdbarch)) |
c906108c SS |
8439 | { |
8440 | /* For big endian bits, the DW_AT_bit_offset gives the | |
c5aa993b JM |
8441 | additional bit offset from the MSB of the containing |
8442 | anonymous object to the MSB of the field. We don't | |
8443 | have to do anything special since we don't need to | |
8444 | know the size of the anonymous object. */ | |
f41f5e61 | 8445 | SET_FIELD_BITPOS (*fp, FIELD_BITPOS (*fp) + DW_UNSND (attr)); |
c906108c SS |
8446 | } |
8447 | else | |
8448 | { | |
8449 | /* For little endian bits, compute the bit offset to the | |
c5aa993b JM |
8450 | MSB of the anonymous object, subtract off the number of |
8451 | bits from the MSB of the field to the MSB of the | |
8452 | object, and then subtract off the number of bits of | |
8453 | the field itself. The result is the bit offset of | |
8454 | the LSB of the field. */ | |
c906108c SS |
8455 | int anonymous_size; |
8456 | int bit_offset = DW_UNSND (attr); | |
8457 | ||
e142c38c | 8458 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
8459 | if (attr) |
8460 | { | |
8461 | /* The size of the anonymous object containing | |
8462 | the bit field is explicit, so use the | |
8463 | indicated size (in bytes). */ | |
8464 | anonymous_size = DW_UNSND (attr); | |
8465 | } | |
8466 | else | |
8467 | { | |
8468 | /* The size of the anonymous object containing | |
8469 | the bit field must be inferred from the type | |
8470 | attribute of the data member containing the | |
8471 | bit field. */ | |
8472 | anonymous_size = TYPE_LENGTH (fp->type); | |
8473 | } | |
f41f5e61 PA |
8474 | SET_FIELD_BITPOS (*fp, |
8475 | (FIELD_BITPOS (*fp) | |
8476 | + anonymous_size * bits_per_byte | |
8477 | - bit_offset - FIELD_BITSIZE (*fp))); | |
c906108c SS |
8478 | } |
8479 | } | |
8480 | ||
8481 | /* Get name of field. */ | |
39cbfefa DJ |
8482 | fieldname = dwarf2_name (die, cu); |
8483 | if (fieldname == NULL) | |
8484 | fieldname = ""; | |
d8151005 DJ |
8485 | |
8486 | /* The name is already allocated along with this objfile, so we don't | |
8487 | need to duplicate it for the type. */ | |
8488 | fp->name = fieldname; | |
c906108c SS |
8489 | |
8490 | /* Change accessibility for artificial fields (e.g. virtual table | |
c5aa993b | 8491 | pointer or virtual base class pointer) to private. */ |
e142c38c | 8492 | if (dwarf2_attr (die, DW_AT_artificial, cu)) |
c906108c | 8493 | { |
d48cc9dd | 8494 | FIELD_ARTIFICIAL (*fp) = 1; |
c906108c SS |
8495 | new_field->accessibility = DW_ACCESS_private; |
8496 | fip->non_public_fields = 1; | |
8497 | } | |
8498 | } | |
a9a9bd0f | 8499 | else if (die->tag == DW_TAG_member || die->tag == DW_TAG_variable) |
c906108c | 8500 | { |
a9a9bd0f DC |
8501 | /* C++ static member. */ |
8502 | ||
8503 | /* NOTE: carlton/2002-11-05: It should be a DW_TAG_member that | |
8504 | is a declaration, but all versions of G++ as of this writing | |
8505 | (so through at least 3.2.1) incorrectly generate | |
8506 | DW_TAG_variable tags. */ | |
6e70227d | 8507 | |
ff355380 | 8508 | const char *physname; |
c906108c | 8509 | |
a9a9bd0f | 8510 | /* Get name of field. */ |
39cbfefa DJ |
8511 | fieldname = dwarf2_name (die, cu); |
8512 | if (fieldname == NULL) | |
c906108c SS |
8513 | return; |
8514 | ||
254e6b9e | 8515 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
3863f96c DE |
8516 | if (attr |
8517 | /* Only create a symbol if this is an external value. | |
8518 | new_symbol checks this and puts the value in the global symbol | |
8519 | table, which we want. If it is not external, new_symbol | |
8520 | will try to put the value in cu->list_in_scope which is wrong. */ | |
8521 | && dwarf2_flag_true_p (die, DW_AT_external, cu)) | |
254e6b9e DE |
8522 | { |
8523 | /* A static const member, not much different than an enum as far as | |
8524 | we're concerned, except that we can support more types. */ | |
8525 | new_symbol (die, NULL, cu); | |
8526 | } | |
8527 | ||
2df3850c | 8528 | /* Get physical name. */ |
ff355380 | 8529 | physname = dwarf2_physname (fieldname, die, cu); |
c906108c | 8530 | |
d8151005 DJ |
8531 | /* The name is already allocated along with this objfile, so we don't |
8532 | need to duplicate it for the type. */ | |
8533 | SET_FIELD_PHYSNAME (*fp, physname ? physname : ""); | |
e7c27a73 | 8534 | FIELD_TYPE (*fp) = die_type (die, cu); |
d8151005 | 8535 | FIELD_NAME (*fp) = fieldname; |
c906108c SS |
8536 | } |
8537 | else if (die->tag == DW_TAG_inheritance) | |
8538 | { | |
74ac6d43 | 8539 | LONGEST offset; |
d4b96c9a | 8540 | |
74ac6d43 TT |
8541 | /* C++ base class field. */ |
8542 | if (handle_data_member_location (die, cu, &offset)) | |
8543 | SET_FIELD_BITPOS (*fp, offset * bits_per_byte); | |
c906108c | 8544 | FIELD_BITSIZE (*fp) = 0; |
e7c27a73 | 8545 | FIELD_TYPE (*fp) = die_type (die, cu); |
c906108c SS |
8546 | FIELD_NAME (*fp) = type_name_no_tag (fp->type); |
8547 | fip->nbaseclasses++; | |
8548 | } | |
8549 | } | |
8550 | ||
98751a41 JK |
8551 | /* Add a typedef defined in the scope of the FIP's class. */ |
8552 | ||
8553 | static void | |
8554 | dwarf2_add_typedef (struct field_info *fip, struct die_info *die, | |
8555 | struct dwarf2_cu *cu) | |
6e70227d | 8556 | { |
98751a41 | 8557 | struct objfile *objfile = cu->objfile; |
98751a41 JK |
8558 | struct typedef_field_list *new_field; |
8559 | struct attribute *attr; | |
8560 | struct typedef_field *fp; | |
8561 | char *fieldname = ""; | |
8562 | ||
8563 | /* Allocate a new field list entry and link it in. */ | |
8564 | new_field = xzalloc (sizeof (*new_field)); | |
8565 | make_cleanup (xfree, new_field); | |
8566 | ||
8567 | gdb_assert (die->tag == DW_TAG_typedef); | |
8568 | ||
8569 | fp = &new_field->field; | |
8570 | ||
8571 | /* Get name of field. */ | |
8572 | fp->name = dwarf2_name (die, cu); | |
8573 | if (fp->name == NULL) | |
8574 | return; | |
8575 | ||
8576 | fp->type = read_type_die (die, cu); | |
8577 | ||
8578 | new_field->next = fip->typedef_field_list; | |
8579 | fip->typedef_field_list = new_field; | |
8580 | fip->typedef_field_list_count++; | |
8581 | } | |
8582 | ||
c906108c SS |
8583 | /* Create the vector of fields, and attach it to the type. */ |
8584 | ||
8585 | static void | |
fba45db2 | 8586 | dwarf2_attach_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 8587 | struct dwarf2_cu *cu) |
c906108c SS |
8588 | { |
8589 | int nfields = fip->nfields; | |
8590 | ||
8591 | /* Record the field count, allocate space for the array of fields, | |
8592 | and create blank accessibility bitfields if necessary. */ | |
8593 | TYPE_NFIELDS (type) = nfields; | |
8594 | TYPE_FIELDS (type) = (struct field *) | |
8595 | TYPE_ALLOC (type, sizeof (struct field) * nfields); | |
8596 | memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nfields); | |
8597 | ||
b4ba55a1 | 8598 | if (fip->non_public_fields && cu->language != language_ada) |
c906108c SS |
8599 | { |
8600 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
8601 | ||
8602 | TYPE_FIELD_PRIVATE_BITS (type) = | |
8603 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
8604 | B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); | |
8605 | ||
8606 | TYPE_FIELD_PROTECTED_BITS (type) = | |
8607 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
8608 | B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); | |
8609 | ||
774b6a14 TT |
8610 | TYPE_FIELD_IGNORE_BITS (type) = |
8611 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
8612 | B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields); | |
c906108c SS |
8613 | } |
8614 | ||
8615 | /* If the type has baseclasses, allocate and clear a bit vector for | |
8616 | TYPE_FIELD_VIRTUAL_BITS. */ | |
b4ba55a1 | 8617 | if (fip->nbaseclasses && cu->language != language_ada) |
c906108c SS |
8618 | { |
8619 | int num_bytes = B_BYTES (fip->nbaseclasses); | |
fe1b8b76 | 8620 | unsigned char *pointer; |
c906108c SS |
8621 | |
8622 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
fe1b8b76 JB |
8623 | pointer = TYPE_ALLOC (type, num_bytes); |
8624 | TYPE_FIELD_VIRTUAL_BITS (type) = pointer; | |
c906108c SS |
8625 | B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), fip->nbaseclasses); |
8626 | TYPE_N_BASECLASSES (type) = fip->nbaseclasses; | |
8627 | } | |
8628 | ||
3e43a32a MS |
8629 | /* Copy the saved-up fields into the field vector. Start from the head of |
8630 | the list, adding to the tail of the field array, so that they end up in | |
8631 | the same order in the array in which they were added to the list. */ | |
c906108c SS |
8632 | while (nfields-- > 0) |
8633 | { | |
7d0ccb61 DJ |
8634 | struct nextfield *fieldp; |
8635 | ||
8636 | if (fip->fields) | |
8637 | { | |
8638 | fieldp = fip->fields; | |
8639 | fip->fields = fieldp->next; | |
8640 | } | |
8641 | else | |
8642 | { | |
8643 | fieldp = fip->baseclasses; | |
8644 | fip->baseclasses = fieldp->next; | |
8645 | } | |
8646 | ||
8647 | TYPE_FIELD (type, nfields) = fieldp->field; | |
8648 | switch (fieldp->accessibility) | |
c906108c | 8649 | { |
c5aa993b | 8650 | case DW_ACCESS_private: |
b4ba55a1 JB |
8651 | if (cu->language != language_ada) |
8652 | SET_TYPE_FIELD_PRIVATE (type, nfields); | |
c5aa993b | 8653 | break; |
c906108c | 8654 | |
c5aa993b | 8655 | case DW_ACCESS_protected: |
b4ba55a1 JB |
8656 | if (cu->language != language_ada) |
8657 | SET_TYPE_FIELD_PROTECTED (type, nfields); | |
c5aa993b | 8658 | break; |
c906108c | 8659 | |
c5aa993b JM |
8660 | case DW_ACCESS_public: |
8661 | break; | |
c906108c | 8662 | |
c5aa993b JM |
8663 | default: |
8664 | /* Unknown accessibility. Complain and treat it as public. */ | |
8665 | { | |
e2e0b3e5 | 8666 | complaint (&symfile_complaints, _("unsupported accessibility %d"), |
7d0ccb61 | 8667 | fieldp->accessibility); |
c5aa993b JM |
8668 | } |
8669 | break; | |
c906108c SS |
8670 | } |
8671 | if (nfields < fip->nbaseclasses) | |
8672 | { | |
7d0ccb61 | 8673 | switch (fieldp->virtuality) |
c906108c | 8674 | { |
c5aa993b JM |
8675 | case DW_VIRTUALITY_virtual: |
8676 | case DW_VIRTUALITY_pure_virtual: | |
b4ba55a1 | 8677 | if (cu->language == language_ada) |
a73c6dcd | 8678 | error (_("unexpected virtuality in component of Ada type")); |
c5aa993b JM |
8679 | SET_TYPE_FIELD_VIRTUAL (type, nfields); |
8680 | break; | |
c906108c SS |
8681 | } |
8682 | } | |
c906108c SS |
8683 | } |
8684 | } | |
8685 | ||
c906108c SS |
8686 | /* Add a member function to the proper fieldlist. */ |
8687 | ||
8688 | static void | |
107d2387 | 8689 | dwarf2_add_member_fn (struct field_info *fip, struct die_info *die, |
e7c27a73 | 8690 | struct type *type, struct dwarf2_cu *cu) |
c906108c | 8691 | { |
e7c27a73 | 8692 | struct objfile *objfile = cu->objfile; |
c906108c SS |
8693 | struct attribute *attr; |
8694 | struct fnfieldlist *flp; | |
8695 | int i; | |
8696 | struct fn_field *fnp; | |
8697 | char *fieldname; | |
c906108c | 8698 | struct nextfnfield *new_fnfield; |
f792889a | 8699 | struct type *this_type; |
60d5a603 | 8700 | enum dwarf_access_attribute accessibility; |
c906108c | 8701 | |
b4ba55a1 | 8702 | if (cu->language == language_ada) |
a73c6dcd | 8703 | error (_("unexpected member function in Ada type")); |
b4ba55a1 | 8704 | |
2df3850c | 8705 | /* Get name of member function. */ |
39cbfefa DJ |
8706 | fieldname = dwarf2_name (die, cu); |
8707 | if (fieldname == NULL) | |
2df3850c | 8708 | return; |
c906108c | 8709 | |
c906108c SS |
8710 | /* Look up member function name in fieldlist. */ |
8711 | for (i = 0; i < fip->nfnfields; i++) | |
8712 | { | |
27bfe10e | 8713 | if (strcmp (fip->fnfieldlists[i].name, fieldname) == 0) |
c906108c SS |
8714 | break; |
8715 | } | |
8716 | ||
8717 | /* Create new list element if necessary. */ | |
8718 | if (i < fip->nfnfields) | |
8719 | flp = &fip->fnfieldlists[i]; | |
8720 | else | |
8721 | { | |
8722 | if ((fip->nfnfields % DW_FIELD_ALLOC_CHUNK) == 0) | |
8723 | { | |
8724 | fip->fnfieldlists = (struct fnfieldlist *) | |
8725 | xrealloc (fip->fnfieldlists, | |
8726 | (fip->nfnfields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 8727 | * sizeof (struct fnfieldlist)); |
c906108c | 8728 | if (fip->nfnfields == 0) |
c13c43fd | 8729 | make_cleanup (free_current_contents, &fip->fnfieldlists); |
c906108c SS |
8730 | } |
8731 | flp = &fip->fnfieldlists[fip->nfnfields]; | |
8732 | flp->name = fieldname; | |
8733 | flp->length = 0; | |
8734 | flp->head = NULL; | |
3da10d80 | 8735 | i = fip->nfnfields++; |
c906108c SS |
8736 | } |
8737 | ||
8738 | /* Create a new member function field and chain it to the field list | |
0963b4bd | 8739 | entry. */ |
c906108c | 8740 | new_fnfield = (struct nextfnfield *) xmalloc (sizeof (struct nextfnfield)); |
b8c9b27d | 8741 | make_cleanup (xfree, new_fnfield); |
c906108c SS |
8742 | memset (new_fnfield, 0, sizeof (struct nextfnfield)); |
8743 | new_fnfield->next = flp->head; | |
8744 | flp->head = new_fnfield; | |
8745 | flp->length++; | |
8746 | ||
8747 | /* Fill in the member function field info. */ | |
8748 | fnp = &new_fnfield->fnfield; | |
3da10d80 KS |
8749 | |
8750 | /* Delay processing of the physname until later. */ | |
8751 | if (cu->language == language_cplus || cu->language == language_java) | |
8752 | { | |
8753 | add_to_method_list (type, i, flp->length - 1, fieldname, | |
8754 | die, cu); | |
8755 | } | |
8756 | else | |
8757 | { | |
1d06ead6 | 8758 | const char *physname = dwarf2_physname (fieldname, die, cu); |
3da10d80 KS |
8759 | fnp->physname = physname ? physname : ""; |
8760 | } | |
8761 | ||
c906108c | 8762 | fnp->type = alloc_type (objfile); |
f792889a DJ |
8763 | this_type = read_type_die (die, cu); |
8764 | if (this_type && TYPE_CODE (this_type) == TYPE_CODE_FUNC) | |
c906108c | 8765 | { |
f792889a | 8766 | int nparams = TYPE_NFIELDS (this_type); |
c906108c | 8767 | |
f792889a | 8768 | /* TYPE is the domain of this method, and THIS_TYPE is the type |
e26fb1d7 DC |
8769 | of the method itself (TYPE_CODE_METHOD). */ |
8770 | smash_to_method_type (fnp->type, type, | |
f792889a DJ |
8771 | TYPE_TARGET_TYPE (this_type), |
8772 | TYPE_FIELDS (this_type), | |
8773 | TYPE_NFIELDS (this_type), | |
8774 | TYPE_VARARGS (this_type)); | |
c906108c SS |
8775 | |
8776 | /* Handle static member functions. | |
c5aa993b | 8777 | Dwarf2 has no clean way to discern C++ static and non-static |
0963b4bd MS |
8778 | member functions. G++ helps GDB by marking the first |
8779 | parameter for non-static member functions (which is the this | |
8780 | pointer) as artificial. We obtain this information from | |
8781 | read_subroutine_type via TYPE_FIELD_ARTIFICIAL. */ | |
f792889a | 8782 | if (nparams == 0 || TYPE_FIELD_ARTIFICIAL (this_type, 0) == 0) |
c906108c SS |
8783 | fnp->voffset = VOFFSET_STATIC; |
8784 | } | |
8785 | else | |
e2e0b3e5 | 8786 | complaint (&symfile_complaints, _("member function type missing for '%s'"), |
3da10d80 | 8787 | dwarf2_full_name (fieldname, die, cu)); |
c906108c SS |
8788 | |
8789 | /* Get fcontext from DW_AT_containing_type if present. */ | |
e142c38c | 8790 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
e7c27a73 | 8791 | fnp->fcontext = die_containing_type (die, cu); |
c906108c | 8792 | |
3e43a32a MS |
8793 | /* dwarf2 doesn't have stubbed physical names, so the setting of is_const and |
8794 | is_volatile is irrelevant, as it is needed by gdb_mangle_name only. */ | |
c906108c SS |
8795 | |
8796 | /* Get accessibility. */ | |
e142c38c | 8797 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c | 8798 | if (attr) |
60d5a603 JK |
8799 | accessibility = DW_UNSND (attr); |
8800 | else | |
8801 | accessibility = dwarf2_default_access_attribute (die, cu); | |
8802 | switch (accessibility) | |
c906108c | 8803 | { |
60d5a603 JK |
8804 | case DW_ACCESS_private: |
8805 | fnp->is_private = 1; | |
8806 | break; | |
8807 | case DW_ACCESS_protected: | |
8808 | fnp->is_protected = 1; | |
8809 | break; | |
c906108c SS |
8810 | } |
8811 | ||
b02dede2 | 8812 | /* Check for artificial methods. */ |
e142c38c | 8813 | attr = dwarf2_attr (die, DW_AT_artificial, cu); |
b02dede2 DJ |
8814 | if (attr && DW_UNSND (attr) != 0) |
8815 | fnp->is_artificial = 1; | |
8816 | ||
0d564a31 | 8817 | /* Get index in virtual function table if it is a virtual member |
aec5aa8b TT |
8818 | function. For older versions of GCC, this is an offset in the |
8819 | appropriate virtual table, as specified by DW_AT_containing_type. | |
8820 | For everyone else, it is an expression to be evaluated relative | |
0d564a31 DJ |
8821 | to the object address. */ |
8822 | ||
e142c38c | 8823 | attr = dwarf2_attr (die, DW_AT_vtable_elem_location, cu); |
aec5aa8b | 8824 | if (attr) |
8e19ed76 | 8825 | { |
aec5aa8b | 8826 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size > 0) |
8e19ed76 | 8827 | { |
aec5aa8b TT |
8828 | if (DW_BLOCK (attr)->data[0] == DW_OP_constu) |
8829 | { | |
8830 | /* Old-style GCC. */ | |
8831 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu) + 2; | |
8832 | } | |
8833 | else if (DW_BLOCK (attr)->data[0] == DW_OP_deref | |
8834 | || (DW_BLOCK (attr)->size > 1 | |
8835 | && DW_BLOCK (attr)->data[0] == DW_OP_deref_size | |
8836 | && DW_BLOCK (attr)->data[1] == cu->header.addr_size)) | |
8837 | { | |
8838 | struct dwarf_block blk; | |
8839 | int offset; | |
8840 | ||
8841 | offset = (DW_BLOCK (attr)->data[0] == DW_OP_deref | |
8842 | ? 1 : 2); | |
8843 | blk.size = DW_BLOCK (attr)->size - offset; | |
8844 | blk.data = DW_BLOCK (attr)->data + offset; | |
8845 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu); | |
8846 | if ((fnp->voffset % cu->header.addr_size) != 0) | |
8847 | dwarf2_complex_location_expr_complaint (); | |
8848 | else | |
8849 | fnp->voffset /= cu->header.addr_size; | |
8850 | fnp->voffset += 2; | |
8851 | } | |
8852 | else | |
8853 | dwarf2_complex_location_expr_complaint (); | |
8854 | ||
8855 | if (!fnp->fcontext) | |
8856 | fnp->fcontext = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (this_type, 0)); | |
8857 | } | |
3690dd37 | 8858 | else if (attr_form_is_section_offset (attr)) |
8e19ed76 | 8859 | { |
4d3c2250 | 8860 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
8861 | } |
8862 | else | |
8863 | { | |
4d3c2250 KB |
8864 | dwarf2_invalid_attrib_class_complaint ("DW_AT_vtable_elem_location", |
8865 | fieldname); | |
8e19ed76 | 8866 | } |
0d564a31 | 8867 | } |
d48cc9dd DJ |
8868 | else |
8869 | { | |
8870 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); | |
8871 | if (attr && DW_UNSND (attr)) | |
8872 | { | |
8873 | /* GCC does this, as of 2008-08-25; PR debug/37237. */ | |
8874 | complaint (&symfile_complaints, | |
3e43a32a MS |
8875 | _("Member function \"%s\" (offset %d) is virtual " |
8876 | "but the vtable offset is not specified"), | |
b64f50a1 | 8877 | fieldname, die->offset.sect_off); |
9655fd1a | 8878 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
d48cc9dd DJ |
8879 | TYPE_CPLUS_DYNAMIC (type) = 1; |
8880 | } | |
8881 | } | |
c906108c SS |
8882 | } |
8883 | ||
8884 | /* Create the vector of member function fields, and attach it to the type. */ | |
8885 | ||
8886 | static void | |
fba45db2 | 8887 | dwarf2_attach_fn_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 8888 | struct dwarf2_cu *cu) |
c906108c SS |
8889 | { |
8890 | struct fnfieldlist *flp; | |
c906108c SS |
8891 | int i; |
8892 | ||
b4ba55a1 | 8893 | if (cu->language == language_ada) |
a73c6dcd | 8894 | error (_("unexpected member functions in Ada type")); |
b4ba55a1 | 8895 | |
c906108c SS |
8896 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
8897 | TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) | |
8898 | TYPE_ALLOC (type, sizeof (struct fn_fieldlist) * fip->nfnfields); | |
8899 | ||
8900 | for (i = 0, flp = fip->fnfieldlists; i < fip->nfnfields; i++, flp++) | |
8901 | { | |
8902 | struct nextfnfield *nfp = flp->head; | |
8903 | struct fn_fieldlist *fn_flp = &TYPE_FN_FIELDLIST (type, i); | |
8904 | int k; | |
8905 | ||
8906 | TYPE_FN_FIELDLIST_NAME (type, i) = flp->name; | |
8907 | TYPE_FN_FIELDLIST_LENGTH (type, i) = flp->length; | |
8908 | fn_flp->fn_fields = (struct fn_field *) | |
8909 | TYPE_ALLOC (type, sizeof (struct fn_field) * flp->length); | |
8910 | for (k = flp->length; (k--, nfp); nfp = nfp->next) | |
c5aa993b | 8911 | fn_flp->fn_fields[k] = nfp->fnfield; |
c906108c SS |
8912 | } |
8913 | ||
8914 | TYPE_NFN_FIELDS (type) = fip->nfnfields; | |
c906108c SS |
8915 | } |
8916 | ||
1168df01 JB |
8917 | /* Returns non-zero if NAME is the name of a vtable member in CU's |
8918 | language, zero otherwise. */ | |
8919 | static int | |
8920 | is_vtable_name (const char *name, struct dwarf2_cu *cu) | |
8921 | { | |
8922 | static const char vptr[] = "_vptr"; | |
987504bb | 8923 | static const char vtable[] = "vtable"; |
1168df01 | 8924 | |
987504bb JJ |
8925 | /* Look for the C++ and Java forms of the vtable. */ |
8926 | if ((cu->language == language_java | |
8927 | && strncmp (name, vtable, sizeof (vtable) - 1) == 0) | |
8928 | || (strncmp (name, vptr, sizeof (vptr) - 1) == 0 | |
8929 | && is_cplus_marker (name[sizeof (vptr) - 1]))) | |
1168df01 JB |
8930 | return 1; |
8931 | ||
8932 | return 0; | |
8933 | } | |
8934 | ||
c0dd20ea | 8935 | /* GCC outputs unnamed structures that are really pointers to member |
0b92b5bb TT |
8936 | functions, with the ABI-specified layout. If TYPE describes |
8937 | such a structure, smash it into a member function type. | |
61049d3b DJ |
8938 | |
8939 | GCC shouldn't do this; it should just output pointer to member DIEs. | |
8940 | This is GCC PR debug/28767. */ | |
c0dd20ea | 8941 | |
0b92b5bb TT |
8942 | static void |
8943 | quirk_gcc_member_function_pointer (struct type *type, struct objfile *objfile) | |
c0dd20ea | 8944 | { |
0b92b5bb | 8945 | struct type *pfn_type, *domain_type, *new_type; |
c0dd20ea DJ |
8946 | |
8947 | /* Check for a structure with no name and two children. */ | |
0b92b5bb TT |
8948 | if (TYPE_CODE (type) != TYPE_CODE_STRUCT || TYPE_NFIELDS (type) != 2) |
8949 | return; | |
c0dd20ea DJ |
8950 | |
8951 | /* Check for __pfn and __delta members. */ | |
0b92b5bb TT |
8952 | if (TYPE_FIELD_NAME (type, 0) == NULL |
8953 | || strcmp (TYPE_FIELD_NAME (type, 0), "__pfn") != 0 | |
8954 | || TYPE_FIELD_NAME (type, 1) == NULL | |
8955 | || strcmp (TYPE_FIELD_NAME (type, 1), "__delta") != 0) | |
8956 | return; | |
c0dd20ea DJ |
8957 | |
8958 | /* Find the type of the method. */ | |
0b92b5bb | 8959 | pfn_type = TYPE_FIELD_TYPE (type, 0); |
c0dd20ea DJ |
8960 | if (pfn_type == NULL |
8961 | || TYPE_CODE (pfn_type) != TYPE_CODE_PTR | |
8962 | || TYPE_CODE (TYPE_TARGET_TYPE (pfn_type)) != TYPE_CODE_FUNC) | |
0b92b5bb | 8963 | return; |
c0dd20ea DJ |
8964 | |
8965 | /* Look for the "this" argument. */ | |
8966 | pfn_type = TYPE_TARGET_TYPE (pfn_type); | |
8967 | if (TYPE_NFIELDS (pfn_type) == 0 | |
0b92b5bb | 8968 | /* || TYPE_FIELD_TYPE (pfn_type, 0) == NULL */ |
c0dd20ea | 8969 | || TYPE_CODE (TYPE_FIELD_TYPE (pfn_type, 0)) != TYPE_CODE_PTR) |
0b92b5bb | 8970 | return; |
c0dd20ea DJ |
8971 | |
8972 | domain_type = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (pfn_type, 0)); | |
0b92b5bb TT |
8973 | new_type = alloc_type (objfile); |
8974 | smash_to_method_type (new_type, domain_type, TYPE_TARGET_TYPE (pfn_type), | |
c0dd20ea DJ |
8975 | TYPE_FIELDS (pfn_type), TYPE_NFIELDS (pfn_type), |
8976 | TYPE_VARARGS (pfn_type)); | |
0b92b5bb | 8977 | smash_to_methodptr_type (type, new_type); |
c0dd20ea | 8978 | } |
1168df01 | 8979 | |
c906108c | 8980 | /* Called when we find the DIE that starts a structure or union scope |
c767944b DJ |
8981 | (definition) to create a type for the structure or union. Fill in |
8982 | the type's name and general properties; the members will not be | |
8983 | processed until process_structure_type. | |
c906108c | 8984 | |
c767944b DJ |
8985 | NOTE: we need to call these functions regardless of whether or not the |
8986 | DIE has a DW_AT_name attribute, since it might be an anonymous | |
c906108c SS |
8987 | structure or union. This gets the type entered into our set of |
8988 | user defined types. | |
8989 | ||
8990 | However, if the structure is incomplete (an opaque struct/union) | |
8991 | then suppress creating a symbol table entry for it since gdb only | |
8992 | wants to find the one with the complete definition. Note that if | |
8993 | it is complete, we just call new_symbol, which does it's own | |
8994 | checking about whether the struct/union is anonymous or not (and | |
8995 | suppresses creating a symbol table entry itself). */ | |
8996 | ||
f792889a | 8997 | static struct type * |
134d01f1 | 8998 | read_structure_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 8999 | { |
e7c27a73 | 9000 | struct objfile *objfile = cu->objfile; |
c906108c SS |
9001 | struct type *type; |
9002 | struct attribute *attr; | |
39cbfefa | 9003 | char *name; |
c906108c | 9004 | |
348e048f DE |
9005 | /* If the definition of this type lives in .debug_types, read that type. |
9006 | Don't follow DW_AT_specification though, that will take us back up | |
9007 | the chain and we want to go down. */ | |
9008 | attr = dwarf2_attr_no_follow (die, DW_AT_signature, cu); | |
9009 | if (attr) | |
9010 | { | |
9011 | struct dwarf2_cu *type_cu = cu; | |
9012 | struct die_info *type_die = follow_die_ref_or_sig (die, attr, &type_cu); | |
9a619af0 | 9013 | |
348e048f DE |
9014 | /* We could just recurse on read_structure_type, but we need to call |
9015 | get_die_type to ensure only one type for this DIE is created. | |
9016 | This is important, for example, because for c++ classes we need | |
9017 | TYPE_NAME set which is only done by new_symbol. Blech. */ | |
9018 | type = read_type_die (type_die, type_cu); | |
9dc481d3 DE |
9019 | |
9020 | /* TYPE_CU may not be the same as CU. | |
9021 | Ensure TYPE is recorded in CU's type_hash table. */ | |
348e048f DE |
9022 | return set_die_type (die, type, cu); |
9023 | } | |
9024 | ||
c0dd20ea | 9025 | type = alloc_type (objfile); |
c906108c | 9026 | INIT_CPLUS_SPECIFIC (type); |
93311388 | 9027 | |
39cbfefa DJ |
9028 | name = dwarf2_name (die, cu); |
9029 | if (name != NULL) | |
c906108c | 9030 | { |
987504bb JJ |
9031 | if (cu->language == language_cplus |
9032 | || cu->language == language_java) | |
63d06c5c | 9033 | { |
3da10d80 KS |
9034 | char *full_name = (char *) dwarf2_full_name (name, die, cu); |
9035 | ||
9036 | /* dwarf2_full_name might have already finished building the DIE's | |
9037 | type. If so, there is no need to continue. */ | |
9038 | if (get_die_type (die, cu) != NULL) | |
9039 | return get_die_type (die, cu); | |
9040 | ||
9041 | TYPE_TAG_NAME (type) = full_name; | |
94af9270 KS |
9042 | if (die->tag == DW_TAG_structure_type |
9043 | || die->tag == DW_TAG_class_type) | |
9044 | TYPE_NAME (type) = TYPE_TAG_NAME (type); | |
63d06c5c DC |
9045 | } |
9046 | else | |
9047 | { | |
d8151005 DJ |
9048 | /* The name is already allocated along with this objfile, so |
9049 | we don't need to duplicate it for the type. */ | |
94af9270 KS |
9050 | TYPE_TAG_NAME (type) = (char *) name; |
9051 | if (die->tag == DW_TAG_class_type) | |
9052 | TYPE_NAME (type) = TYPE_TAG_NAME (type); | |
63d06c5c | 9053 | } |
c906108c SS |
9054 | } |
9055 | ||
9056 | if (die->tag == DW_TAG_structure_type) | |
9057 | { | |
9058 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
9059 | } | |
9060 | else if (die->tag == DW_TAG_union_type) | |
9061 | { | |
9062 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
9063 | } | |
9064 | else | |
9065 | { | |
c906108c SS |
9066 | TYPE_CODE (type) = TYPE_CODE_CLASS; |
9067 | } | |
9068 | ||
0cc2414c TT |
9069 | if (cu->language == language_cplus && die->tag == DW_TAG_class_type) |
9070 | TYPE_DECLARED_CLASS (type) = 1; | |
9071 | ||
e142c38c | 9072 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
9073 | if (attr) |
9074 | { | |
9075 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
9076 | } | |
9077 | else | |
9078 | { | |
9079 | TYPE_LENGTH (type) = 0; | |
9080 | } | |
9081 | ||
876cecd0 | 9082 | TYPE_STUB_SUPPORTED (type) = 1; |
dc718098 | 9083 | if (die_is_declaration (die, cu)) |
876cecd0 | 9084 | TYPE_STUB (type) = 1; |
a6c727b2 DJ |
9085 | else if (attr == NULL && die->child == NULL |
9086 | && producer_is_realview (cu->producer)) | |
9087 | /* RealView does not output the required DW_AT_declaration | |
9088 | on incomplete types. */ | |
9089 | TYPE_STUB (type) = 1; | |
dc718098 | 9090 | |
c906108c SS |
9091 | /* We need to add the type field to the die immediately so we don't |
9092 | infinitely recurse when dealing with pointers to the structure | |
0963b4bd | 9093 | type within the structure itself. */ |
1c379e20 | 9094 | set_die_type (die, type, cu); |
c906108c | 9095 | |
7e314c57 JK |
9096 | /* set_die_type should be already done. */ |
9097 | set_descriptive_type (type, die, cu); | |
9098 | ||
c767944b DJ |
9099 | return type; |
9100 | } | |
9101 | ||
9102 | /* Finish creating a structure or union type, including filling in | |
9103 | its members and creating a symbol for it. */ | |
9104 | ||
9105 | static void | |
9106 | process_structure_scope (struct die_info *die, struct dwarf2_cu *cu) | |
9107 | { | |
9108 | struct objfile *objfile = cu->objfile; | |
9109 | struct die_info *child_die = die->child; | |
9110 | struct type *type; | |
9111 | ||
9112 | type = get_die_type (die, cu); | |
9113 | if (type == NULL) | |
9114 | type = read_structure_type (die, cu); | |
9115 | ||
e142c38c | 9116 | if (die->child != NULL && ! die_is_declaration (die, cu)) |
c906108c SS |
9117 | { |
9118 | struct field_info fi; | |
9119 | struct die_info *child_die; | |
34eaf542 | 9120 | VEC (symbolp) *template_args = NULL; |
c767944b | 9121 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
c906108c SS |
9122 | |
9123 | memset (&fi, 0, sizeof (struct field_info)); | |
9124 | ||
639d11d3 | 9125 | child_die = die->child; |
c906108c SS |
9126 | |
9127 | while (child_die && child_die->tag) | |
9128 | { | |
a9a9bd0f DC |
9129 | if (child_die->tag == DW_TAG_member |
9130 | || child_die->tag == DW_TAG_variable) | |
c906108c | 9131 | { |
a9a9bd0f DC |
9132 | /* NOTE: carlton/2002-11-05: A C++ static data member |
9133 | should be a DW_TAG_member that is a declaration, but | |
9134 | all versions of G++ as of this writing (so through at | |
9135 | least 3.2.1) incorrectly generate DW_TAG_variable | |
9136 | tags for them instead. */ | |
e7c27a73 | 9137 | dwarf2_add_field (&fi, child_die, cu); |
c906108c | 9138 | } |
8713b1b1 | 9139 | else if (child_die->tag == DW_TAG_subprogram) |
c906108c | 9140 | { |
0963b4bd | 9141 | /* C++ member function. */ |
e7c27a73 | 9142 | dwarf2_add_member_fn (&fi, child_die, type, cu); |
c906108c SS |
9143 | } |
9144 | else if (child_die->tag == DW_TAG_inheritance) | |
9145 | { | |
9146 | /* C++ base class field. */ | |
e7c27a73 | 9147 | dwarf2_add_field (&fi, child_die, cu); |
c906108c | 9148 | } |
98751a41 JK |
9149 | else if (child_die->tag == DW_TAG_typedef) |
9150 | dwarf2_add_typedef (&fi, child_die, cu); | |
34eaf542 TT |
9151 | else if (child_die->tag == DW_TAG_template_type_param |
9152 | || child_die->tag == DW_TAG_template_value_param) | |
9153 | { | |
9154 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
9155 | ||
f1078f66 DJ |
9156 | if (arg != NULL) |
9157 | VEC_safe_push (symbolp, template_args, arg); | |
34eaf542 TT |
9158 | } |
9159 | ||
c906108c SS |
9160 | child_die = sibling_die (child_die); |
9161 | } | |
9162 | ||
34eaf542 TT |
9163 | /* Attach template arguments to type. */ |
9164 | if (! VEC_empty (symbolp, template_args)) | |
9165 | { | |
9166 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
9167 | TYPE_N_TEMPLATE_ARGUMENTS (type) | |
9168 | = VEC_length (symbolp, template_args); | |
9169 | TYPE_TEMPLATE_ARGUMENTS (type) | |
9170 | = obstack_alloc (&objfile->objfile_obstack, | |
9171 | (TYPE_N_TEMPLATE_ARGUMENTS (type) | |
9172 | * sizeof (struct symbol *))); | |
9173 | memcpy (TYPE_TEMPLATE_ARGUMENTS (type), | |
9174 | VEC_address (symbolp, template_args), | |
9175 | (TYPE_N_TEMPLATE_ARGUMENTS (type) | |
9176 | * sizeof (struct symbol *))); | |
9177 | VEC_free (symbolp, template_args); | |
9178 | } | |
9179 | ||
c906108c SS |
9180 | /* Attach fields and member functions to the type. */ |
9181 | if (fi.nfields) | |
e7c27a73 | 9182 | dwarf2_attach_fields_to_type (&fi, type, cu); |
c906108c SS |
9183 | if (fi.nfnfields) |
9184 | { | |
e7c27a73 | 9185 | dwarf2_attach_fn_fields_to_type (&fi, type, cu); |
c906108c | 9186 | |
c5aa993b | 9187 | /* Get the type which refers to the base class (possibly this |
c906108c | 9188 | class itself) which contains the vtable pointer for the current |
0d564a31 DJ |
9189 | class from the DW_AT_containing_type attribute. This use of |
9190 | DW_AT_containing_type is a GNU extension. */ | |
c906108c | 9191 | |
e142c38c | 9192 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
c906108c | 9193 | { |
e7c27a73 | 9194 | struct type *t = die_containing_type (die, cu); |
c906108c SS |
9195 | |
9196 | TYPE_VPTR_BASETYPE (type) = t; | |
9197 | if (type == t) | |
9198 | { | |
c906108c SS |
9199 | int i; |
9200 | ||
9201 | /* Our own class provides vtbl ptr. */ | |
9202 | for (i = TYPE_NFIELDS (t) - 1; | |
9203 | i >= TYPE_N_BASECLASSES (t); | |
9204 | --i) | |
9205 | { | |
0d5cff50 | 9206 | const char *fieldname = TYPE_FIELD_NAME (t, i); |
c906108c | 9207 | |
1168df01 | 9208 | if (is_vtable_name (fieldname, cu)) |
c906108c SS |
9209 | { |
9210 | TYPE_VPTR_FIELDNO (type) = i; | |
9211 | break; | |
9212 | } | |
9213 | } | |
9214 | ||
9215 | /* Complain if virtual function table field not found. */ | |
9216 | if (i < TYPE_N_BASECLASSES (t)) | |
4d3c2250 | 9217 | complaint (&symfile_complaints, |
3e43a32a MS |
9218 | _("virtual function table pointer " |
9219 | "not found when defining class '%s'"), | |
4d3c2250 KB |
9220 | TYPE_TAG_NAME (type) ? TYPE_TAG_NAME (type) : |
9221 | ""); | |
c906108c SS |
9222 | } |
9223 | else | |
9224 | { | |
9225 | TYPE_VPTR_FIELDNO (type) = TYPE_VPTR_FIELDNO (t); | |
9226 | } | |
9227 | } | |
f6235d4c EZ |
9228 | else if (cu->producer |
9229 | && strncmp (cu->producer, | |
9230 | "IBM(R) XL C/C++ Advanced Edition", 32) == 0) | |
9231 | { | |
9232 | /* The IBM XLC compiler does not provide direct indication | |
9233 | of the containing type, but the vtable pointer is | |
9234 | always named __vfp. */ | |
9235 | ||
9236 | int i; | |
9237 | ||
9238 | for (i = TYPE_NFIELDS (type) - 1; | |
9239 | i >= TYPE_N_BASECLASSES (type); | |
9240 | --i) | |
9241 | { | |
9242 | if (strcmp (TYPE_FIELD_NAME (type, i), "__vfp") == 0) | |
9243 | { | |
9244 | TYPE_VPTR_FIELDNO (type) = i; | |
9245 | TYPE_VPTR_BASETYPE (type) = type; | |
9246 | break; | |
9247 | } | |
9248 | } | |
9249 | } | |
c906108c | 9250 | } |
98751a41 JK |
9251 | |
9252 | /* Copy fi.typedef_field_list linked list elements content into the | |
9253 | allocated array TYPE_TYPEDEF_FIELD_ARRAY (type). */ | |
9254 | if (fi.typedef_field_list) | |
9255 | { | |
9256 | int i = fi.typedef_field_list_count; | |
9257 | ||
a0d7a4ff | 9258 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
98751a41 JK |
9259 | TYPE_TYPEDEF_FIELD_ARRAY (type) |
9260 | = TYPE_ALLOC (type, sizeof (TYPE_TYPEDEF_FIELD (type, 0)) * i); | |
9261 | TYPE_TYPEDEF_FIELD_COUNT (type) = i; | |
9262 | ||
9263 | /* Reverse the list order to keep the debug info elements order. */ | |
9264 | while (--i >= 0) | |
9265 | { | |
9266 | struct typedef_field *dest, *src; | |
6e70227d | 9267 | |
98751a41 JK |
9268 | dest = &TYPE_TYPEDEF_FIELD (type, i); |
9269 | src = &fi.typedef_field_list->field; | |
9270 | fi.typedef_field_list = fi.typedef_field_list->next; | |
9271 | *dest = *src; | |
9272 | } | |
9273 | } | |
c767944b DJ |
9274 | |
9275 | do_cleanups (back_to); | |
eb2a6f42 TT |
9276 | |
9277 | if (HAVE_CPLUS_STRUCT (type)) | |
9278 | TYPE_CPLUS_REALLY_JAVA (type) = cu->language == language_java; | |
c906108c | 9279 | } |
63d06c5c | 9280 | |
bb5ed363 | 9281 | quirk_gcc_member_function_pointer (type, objfile); |
0b92b5bb | 9282 | |
90aeadfc DC |
9283 | /* NOTE: carlton/2004-03-16: GCC 3.4 (or at least one of its |
9284 | snapshots) has been known to create a die giving a declaration | |
9285 | for a class that has, as a child, a die giving a definition for a | |
9286 | nested class. So we have to process our children even if the | |
9287 | current die is a declaration. Normally, of course, a declaration | |
9288 | won't have any children at all. */ | |
134d01f1 | 9289 | |
90aeadfc DC |
9290 | while (child_die != NULL && child_die->tag) |
9291 | { | |
9292 | if (child_die->tag == DW_TAG_member | |
9293 | || child_die->tag == DW_TAG_variable | |
34eaf542 TT |
9294 | || child_die->tag == DW_TAG_inheritance |
9295 | || child_die->tag == DW_TAG_template_value_param | |
9296 | || child_die->tag == DW_TAG_template_type_param) | |
134d01f1 | 9297 | { |
90aeadfc | 9298 | /* Do nothing. */ |
134d01f1 | 9299 | } |
90aeadfc DC |
9300 | else |
9301 | process_die (child_die, cu); | |
134d01f1 | 9302 | |
90aeadfc | 9303 | child_die = sibling_die (child_die); |
134d01f1 DJ |
9304 | } |
9305 | ||
fa4028e9 JB |
9306 | /* Do not consider external references. According to the DWARF standard, |
9307 | these DIEs are identified by the fact that they have no byte_size | |
9308 | attribute, and a declaration attribute. */ | |
9309 | if (dwarf2_attr (die, DW_AT_byte_size, cu) != NULL | |
9310 | || !die_is_declaration (die, cu)) | |
c767944b | 9311 | new_symbol (die, type, cu); |
134d01f1 DJ |
9312 | } |
9313 | ||
9314 | /* Given a DW_AT_enumeration_type die, set its type. We do not | |
9315 | complete the type's fields yet, or create any symbols. */ | |
c906108c | 9316 | |
f792889a | 9317 | static struct type * |
134d01f1 | 9318 | read_enumeration_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 9319 | { |
e7c27a73 | 9320 | struct objfile *objfile = cu->objfile; |
c906108c | 9321 | struct type *type; |
c906108c | 9322 | struct attribute *attr; |
0114d602 | 9323 | const char *name; |
134d01f1 | 9324 | |
348e048f DE |
9325 | /* If the definition of this type lives in .debug_types, read that type. |
9326 | Don't follow DW_AT_specification though, that will take us back up | |
9327 | the chain and we want to go down. */ | |
9328 | attr = dwarf2_attr_no_follow (die, DW_AT_signature, cu); | |
9329 | if (attr) | |
9330 | { | |
9331 | struct dwarf2_cu *type_cu = cu; | |
9332 | struct die_info *type_die = follow_die_ref_or_sig (die, attr, &type_cu); | |
9a619af0 | 9333 | |
348e048f | 9334 | type = read_type_die (type_die, type_cu); |
9dc481d3 DE |
9335 | |
9336 | /* TYPE_CU may not be the same as CU. | |
9337 | Ensure TYPE is recorded in CU's type_hash table. */ | |
348e048f DE |
9338 | return set_die_type (die, type, cu); |
9339 | } | |
9340 | ||
c906108c SS |
9341 | type = alloc_type (objfile); |
9342 | ||
9343 | TYPE_CODE (type) = TYPE_CODE_ENUM; | |
94af9270 | 9344 | name = dwarf2_full_name (NULL, die, cu); |
39cbfefa | 9345 | if (name != NULL) |
0114d602 | 9346 | TYPE_TAG_NAME (type) = (char *) name; |
c906108c | 9347 | |
e142c38c | 9348 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
9349 | if (attr) |
9350 | { | |
9351 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
9352 | } | |
9353 | else | |
9354 | { | |
9355 | TYPE_LENGTH (type) = 0; | |
9356 | } | |
9357 | ||
137033e9 JB |
9358 | /* The enumeration DIE can be incomplete. In Ada, any type can be |
9359 | declared as private in the package spec, and then defined only | |
9360 | inside the package body. Such types are known as Taft Amendment | |
9361 | Types. When another package uses such a type, an incomplete DIE | |
9362 | may be generated by the compiler. */ | |
02eb380e | 9363 | if (die_is_declaration (die, cu)) |
876cecd0 | 9364 | TYPE_STUB (type) = 1; |
02eb380e | 9365 | |
f792889a | 9366 | return set_die_type (die, type, cu); |
134d01f1 DJ |
9367 | } |
9368 | ||
9369 | /* Given a pointer to a die which begins an enumeration, process all | |
9370 | the dies that define the members of the enumeration, and create the | |
9371 | symbol for the enumeration type. | |
9372 | ||
9373 | NOTE: We reverse the order of the element list. */ | |
9374 | ||
9375 | static void | |
9376 | process_enumeration_scope (struct die_info *die, struct dwarf2_cu *cu) | |
9377 | { | |
f792889a | 9378 | struct type *this_type; |
134d01f1 | 9379 | |
f792889a DJ |
9380 | this_type = get_die_type (die, cu); |
9381 | if (this_type == NULL) | |
9382 | this_type = read_enumeration_type (die, cu); | |
9dc481d3 | 9383 | |
639d11d3 | 9384 | if (die->child != NULL) |
c906108c | 9385 | { |
9dc481d3 DE |
9386 | struct die_info *child_die; |
9387 | struct symbol *sym; | |
9388 | struct field *fields = NULL; | |
9389 | int num_fields = 0; | |
9390 | int unsigned_enum = 1; | |
9391 | char *name; | |
cafec441 TT |
9392 | int flag_enum = 1; |
9393 | ULONGEST mask = 0; | |
9dc481d3 | 9394 | |
639d11d3 | 9395 | child_die = die->child; |
c906108c SS |
9396 | while (child_die && child_die->tag) |
9397 | { | |
9398 | if (child_die->tag != DW_TAG_enumerator) | |
9399 | { | |
e7c27a73 | 9400 | process_die (child_die, cu); |
c906108c SS |
9401 | } |
9402 | else | |
9403 | { | |
39cbfefa DJ |
9404 | name = dwarf2_name (child_die, cu); |
9405 | if (name) | |
c906108c | 9406 | { |
f792889a | 9407 | sym = new_symbol (child_die, this_type, cu); |
c906108c | 9408 | if (SYMBOL_VALUE (sym) < 0) |
cafec441 TT |
9409 | { |
9410 | unsigned_enum = 0; | |
9411 | flag_enum = 0; | |
9412 | } | |
9413 | else if ((mask & SYMBOL_VALUE (sym)) != 0) | |
9414 | flag_enum = 0; | |
9415 | else | |
9416 | mask |= SYMBOL_VALUE (sym); | |
c906108c SS |
9417 | |
9418 | if ((num_fields % DW_FIELD_ALLOC_CHUNK) == 0) | |
9419 | { | |
9420 | fields = (struct field *) | |
9421 | xrealloc (fields, | |
9422 | (num_fields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 9423 | * sizeof (struct field)); |
c906108c SS |
9424 | } |
9425 | ||
3567439c | 9426 | FIELD_NAME (fields[num_fields]) = SYMBOL_LINKAGE_NAME (sym); |
c906108c | 9427 | FIELD_TYPE (fields[num_fields]) = NULL; |
14e75d8e | 9428 | SET_FIELD_ENUMVAL (fields[num_fields], SYMBOL_VALUE (sym)); |
c906108c SS |
9429 | FIELD_BITSIZE (fields[num_fields]) = 0; |
9430 | ||
9431 | num_fields++; | |
9432 | } | |
9433 | } | |
9434 | ||
9435 | child_die = sibling_die (child_die); | |
9436 | } | |
9437 | ||
9438 | if (num_fields) | |
9439 | { | |
f792889a DJ |
9440 | TYPE_NFIELDS (this_type) = num_fields; |
9441 | TYPE_FIELDS (this_type) = (struct field *) | |
9442 | TYPE_ALLOC (this_type, sizeof (struct field) * num_fields); | |
9443 | memcpy (TYPE_FIELDS (this_type), fields, | |
c906108c | 9444 | sizeof (struct field) * num_fields); |
b8c9b27d | 9445 | xfree (fields); |
c906108c SS |
9446 | } |
9447 | if (unsigned_enum) | |
876cecd0 | 9448 | TYPE_UNSIGNED (this_type) = 1; |
cafec441 TT |
9449 | if (flag_enum) |
9450 | TYPE_FLAG_ENUM (this_type) = 1; | |
c906108c | 9451 | } |
134d01f1 | 9452 | |
6c83ed52 TT |
9453 | /* If we are reading an enum from a .debug_types unit, and the enum |
9454 | is a declaration, and the enum is not the signatured type in the | |
9455 | unit, then we do not want to add a symbol for it. Adding a | |
9456 | symbol would in some cases obscure the true definition of the | |
9457 | enum, giving users an incomplete type when the definition is | |
9458 | actually available. Note that we do not want to do this for all | |
9459 | enums which are just declarations, because C++0x allows forward | |
9460 | enum declarations. */ | |
3019eac3 | 9461 | if (cu->per_cu->is_debug_types |
6c83ed52 TT |
9462 | && die_is_declaration (die, cu)) |
9463 | { | |
52dc124a | 9464 | struct signatured_type *sig_type; |
6c83ed52 | 9465 | |
52dc124a | 9466 | sig_type |
6c83ed52 | 9467 | = lookup_signatured_type_at_offset (dwarf2_per_objfile->objfile, |
3019eac3 | 9468 | cu->per_cu->info_or_types_section, |
6c83ed52 | 9469 | cu->per_cu->offset); |
3019eac3 DE |
9470 | gdb_assert (sig_type->type_offset_in_section.sect_off != 0); |
9471 | if (sig_type->type_offset_in_section.sect_off != die->offset.sect_off) | |
6c83ed52 TT |
9472 | return; |
9473 | } | |
9474 | ||
f792889a | 9475 | new_symbol (die, this_type, cu); |
c906108c SS |
9476 | } |
9477 | ||
9478 | /* Extract all information from a DW_TAG_array_type DIE and put it in | |
9479 | the DIE's type field. For now, this only handles one dimensional | |
9480 | arrays. */ | |
9481 | ||
f792889a | 9482 | static struct type * |
e7c27a73 | 9483 | read_array_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 9484 | { |
e7c27a73 | 9485 | struct objfile *objfile = cu->objfile; |
c906108c | 9486 | struct die_info *child_die; |
7e314c57 | 9487 | struct type *type; |
c906108c SS |
9488 | struct type *element_type, *range_type, *index_type; |
9489 | struct type **range_types = NULL; | |
9490 | struct attribute *attr; | |
9491 | int ndim = 0; | |
9492 | struct cleanup *back_to; | |
39cbfefa | 9493 | char *name; |
c906108c | 9494 | |
e7c27a73 | 9495 | element_type = die_type (die, cu); |
c906108c | 9496 | |
7e314c57 JK |
9497 | /* The die_type call above may have already set the type for this DIE. */ |
9498 | type = get_die_type (die, cu); | |
9499 | if (type) | |
9500 | return type; | |
9501 | ||
c906108c SS |
9502 | /* Irix 6.2 native cc creates array types without children for |
9503 | arrays with unspecified length. */ | |
639d11d3 | 9504 | if (die->child == NULL) |
c906108c | 9505 | { |
46bf5051 | 9506 | index_type = objfile_type (objfile)->builtin_int; |
c906108c | 9507 | range_type = create_range_type (NULL, index_type, 0, -1); |
f792889a DJ |
9508 | type = create_array_type (NULL, element_type, range_type); |
9509 | return set_die_type (die, type, cu); | |
c906108c SS |
9510 | } |
9511 | ||
9512 | back_to = make_cleanup (null_cleanup, NULL); | |
639d11d3 | 9513 | child_die = die->child; |
c906108c SS |
9514 | while (child_die && child_die->tag) |
9515 | { | |
9516 | if (child_die->tag == DW_TAG_subrange_type) | |
9517 | { | |
f792889a | 9518 | struct type *child_type = read_type_die (child_die, cu); |
9a619af0 | 9519 | |
f792889a | 9520 | if (child_type != NULL) |
a02abb62 | 9521 | { |
0963b4bd MS |
9522 | /* The range type was succesfully read. Save it for the |
9523 | array type creation. */ | |
a02abb62 JB |
9524 | if ((ndim % DW_FIELD_ALLOC_CHUNK) == 0) |
9525 | { | |
9526 | range_types = (struct type **) | |
9527 | xrealloc (range_types, (ndim + DW_FIELD_ALLOC_CHUNK) | |
9528 | * sizeof (struct type *)); | |
9529 | if (ndim == 0) | |
9530 | make_cleanup (free_current_contents, &range_types); | |
9531 | } | |
f792889a | 9532 | range_types[ndim++] = child_type; |
a02abb62 | 9533 | } |
c906108c SS |
9534 | } |
9535 | child_die = sibling_die (child_die); | |
9536 | } | |
9537 | ||
9538 | /* Dwarf2 dimensions are output from left to right, create the | |
9539 | necessary array types in backwards order. */ | |
7ca2d3a3 | 9540 | |
c906108c | 9541 | type = element_type; |
7ca2d3a3 DL |
9542 | |
9543 | if (read_array_order (die, cu) == DW_ORD_col_major) | |
9544 | { | |
9545 | int i = 0; | |
9a619af0 | 9546 | |
7ca2d3a3 DL |
9547 | while (i < ndim) |
9548 | type = create_array_type (NULL, type, range_types[i++]); | |
9549 | } | |
9550 | else | |
9551 | { | |
9552 | while (ndim-- > 0) | |
9553 | type = create_array_type (NULL, type, range_types[ndim]); | |
9554 | } | |
c906108c | 9555 | |
f5f8a009 EZ |
9556 | /* Understand Dwarf2 support for vector types (like they occur on |
9557 | the PowerPC w/ AltiVec). Gcc just adds another attribute to the | |
9558 | array type. This is not part of the Dwarf2/3 standard yet, but a | |
9559 | custom vendor extension. The main difference between a regular | |
9560 | array and the vector variant is that vectors are passed by value | |
9561 | to functions. */ | |
e142c38c | 9562 | attr = dwarf2_attr (die, DW_AT_GNU_vector, cu); |
f5f8a009 | 9563 | if (attr) |
ea37ba09 | 9564 | make_vector_type (type); |
f5f8a009 | 9565 | |
dbc98a8b KW |
9566 | /* The DIE may have DW_AT_byte_size set. For example an OpenCL |
9567 | implementation may choose to implement triple vectors using this | |
9568 | attribute. */ | |
9569 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
9570 | if (attr) | |
9571 | { | |
9572 | if (DW_UNSND (attr) >= TYPE_LENGTH (type)) | |
9573 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
9574 | else | |
3e43a32a MS |
9575 | complaint (&symfile_complaints, |
9576 | _("DW_AT_byte_size for array type smaller " | |
9577 | "than the total size of elements")); | |
dbc98a8b KW |
9578 | } |
9579 | ||
39cbfefa DJ |
9580 | name = dwarf2_name (die, cu); |
9581 | if (name) | |
9582 | TYPE_NAME (type) = name; | |
6e70227d | 9583 | |
0963b4bd | 9584 | /* Install the type in the die. */ |
7e314c57 JK |
9585 | set_die_type (die, type, cu); |
9586 | ||
9587 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
9588 | set_descriptive_type (type, die, cu); |
9589 | ||
c906108c SS |
9590 | do_cleanups (back_to); |
9591 | ||
7e314c57 | 9592 | return type; |
c906108c SS |
9593 | } |
9594 | ||
7ca2d3a3 | 9595 | static enum dwarf_array_dim_ordering |
6e70227d | 9596 | read_array_order (struct die_info *die, struct dwarf2_cu *cu) |
7ca2d3a3 DL |
9597 | { |
9598 | struct attribute *attr; | |
9599 | ||
9600 | attr = dwarf2_attr (die, DW_AT_ordering, cu); | |
9601 | ||
9602 | if (attr) return DW_SND (attr); | |
9603 | ||
0963b4bd MS |
9604 | /* GNU F77 is a special case, as at 08/2004 array type info is the |
9605 | opposite order to the dwarf2 specification, but data is still | |
9606 | laid out as per normal fortran. | |
7ca2d3a3 | 9607 | |
0963b4bd MS |
9608 | FIXME: dsl/2004-8-20: If G77 is ever fixed, this will also need |
9609 | version checking. */ | |
7ca2d3a3 | 9610 | |
905e0470 PM |
9611 | if (cu->language == language_fortran |
9612 | && cu->producer && strstr (cu->producer, "GNU F77")) | |
7ca2d3a3 DL |
9613 | { |
9614 | return DW_ORD_row_major; | |
9615 | } | |
9616 | ||
6e70227d | 9617 | switch (cu->language_defn->la_array_ordering) |
7ca2d3a3 DL |
9618 | { |
9619 | case array_column_major: | |
9620 | return DW_ORD_col_major; | |
9621 | case array_row_major: | |
9622 | default: | |
9623 | return DW_ORD_row_major; | |
9624 | }; | |
9625 | } | |
9626 | ||
72019c9c | 9627 | /* Extract all information from a DW_TAG_set_type DIE and put it in |
0963b4bd | 9628 | the DIE's type field. */ |
72019c9c | 9629 | |
f792889a | 9630 | static struct type * |
72019c9c GM |
9631 | read_set_type (struct die_info *die, struct dwarf2_cu *cu) |
9632 | { | |
7e314c57 JK |
9633 | struct type *domain_type, *set_type; |
9634 | struct attribute *attr; | |
f792889a | 9635 | |
7e314c57 JK |
9636 | domain_type = die_type (die, cu); |
9637 | ||
9638 | /* The die_type call above may have already set the type for this DIE. */ | |
9639 | set_type = get_die_type (die, cu); | |
9640 | if (set_type) | |
9641 | return set_type; | |
9642 | ||
9643 | set_type = create_set_type (NULL, domain_type); | |
9644 | ||
9645 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
d09039dd PM |
9646 | if (attr) |
9647 | TYPE_LENGTH (set_type) = DW_UNSND (attr); | |
7e314c57 | 9648 | |
f792889a | 9649 | return set_die_type (die, set_type, cu); |
72019c9c | 9650 | } |
7ca2d3a3 | 9651 | |
c906108c SS |
9652 | /* First cut: install each common block member as a global variable. */ |
9653 | ||
9654 | static void | |
e7c27a73 | 9655 | read_common_block (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
9656 | { |
9657 | struct die_info *child_die; | |
9658 | struct attribute *attr; | |
9659 | struct symbol *sym; | |
9660 | CORE_ADDR base = (CORE_ADDR) 0; | |
9661 | ||
e142c38c | 9662 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
9663 | if (attr) |
9664 | { | |
0963b4bd | 9665 | /* Support the .debug_loc offsets. */ |
8e19ed76 PS |
9666 | if (attr_form_is_block (attr)) |
9667 | { | |
e7c27a73 | 9668 | base = decode_locdesc (DW_BLOCK (attr), cu); |
8e19ed76 | 9669 | } |
3690dd37 | 9670 | else if (attr_form_is_section_offset (attr)) |
8e19ed76 | 9671 | { |
4d3c2250 | 9672 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
9673 | } |
9674 | else | |
9675 | { | |
4d3c2250 KB |
9676 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
9677 | "common block member"); | |
8e19ed76 | 9678 | } |
c906108c | 9679 | } |
639d11d3 | 9680 | if (die->child != NULL) |
c906108c | 9681 | { |
639d11d3 | 9682 | child_die = die->child; |
c906108c SS |
9683 | while (child_die && child_die->tag) |
9684 | { | |
74ac6d43 TT |
9685 | LONGEST offset; |
9686 | ||
e7c27a73 | 9687 | sym = new_symbol (child_die, NULL, cu); |
e8d28ef4 TT |
9688 | if (sym != NULL |
9689 | && handle_data_member_location (child_die, cu, &offset)) | |
c906108c | 9690 | { |
74ac6d43 | 9691 | SYMBOL_VALUE_ADDRESS (sym) = base + offset; |
c906108c SS |
9692 | add_symbol_to_list (sym, &global_symbols); |
9693 | } | |
9694 | child_die = sibling_die (child_die); | |
9695 | } | |
9696 | } | |
9697 | } | |
9698 | ||
0114d602 | 9699 | /* Create a type for a C++ namespace. */ |
d9fa45fe | 9700 | |
0114d602 DJ |
9701 | static struct type * |
9702 | read_namespace_type (struct die_info *die, struct dwarf2_cu *cu) | |
d9fa45fe | 9703 | { |
e7c27a73 | 9704 | struct objfile *objfile = cu->objfile; |
0114d602 | 9705 | const char *previous_prefix, *name; |
9219021c | 9706 | int is_anonymous; |
0114d602 DJ |
9707 | struct type *type; |
9708 | ||
9709 | /* For extensions, reuse the type of the original namespace. */ | |
9710 | if (dwarf2_attr (die, DW_AT_extension, cu) != NULL) | |
9711 | { | |
9712 | struct die_info *ext_die; | |
9713 | struct dwarf2_cu *ext_cu = cu; | |
9a619af0 | 9714 | |
0114d602 DJ |
9715 | ext_die = dwarf2_extension (die, &ext_cu); |
9716 | type = read_type_die (ext_die, ext_cu); | |
9dc481d3 DE |
9717 | |
9718 | /* EXT_CU may not be the same as CU. | |
9719 | Ensure TYPE is recorded in CU's type_hash table. */ | |
0114d602 DJ |
9720 | return set_die_type (die, type, cu); |
9721 | } | |
9219021c | 9722 | |
e142c38c | 9723 | name = namespace_name (die, &is_anonymous, cu); |
9219021c DC |
9724 | |
9725 | /* Now build the name of the current namespace. */ | |
9726 | ||
0114d602 DJ |
9727 | previous_prefix = determine_prefix (die, cu); |
9728 | if (previous_prefix[0] != '\0') | |
9729 | name = typename_concat (&objfile->objfile_obstack, | |
f55ee35c | 9730 | previous_prefix, name, 0, cu); |
0114d602 DJ |
9731 | |
9732 | /* Create the type. */ | |
9733 | type = init_type (TYPE_CODE_NAMESPACE, 0, 0, NULL, | |
9734 | objfile); | |
9735 | TYPE_NAME (type) = (char *) name; | |
9736 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
9737 | ||
60531b24 | 9738 | return set_die_type (die, type, cu); |
0114d602 DJ |
9739 | } |
9740 | ||
9741 | /* Read a C++ namespace. */ | |
9742 | ||
9743 | static void | |
9744 | read_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
9745 | { | |
9746 | struct objfile *objfile = cu->objfile; | |
0114d602 | 9747 | int is_anonymous; |
9219021c | 9748 | |
5c4e30ca DC |
9749 | /* Add a symbol associated to this if we haven't seen the namespace |
9750 | before. Also, add a using directive if it's an anonymous | |
9751 | namespace. */ | |
9219021c | 9752 | |
f2f0e013 | 9753 | if (dwarf2_attr (die, DW_AT_extension, cu) == NULL) |
5c4e30ca DC |
9754 | { |
9755 | struct type *type; | |
9756 | ||
0114d602 | 9757 | type = read_type_die (die, cu); |
e7c27a73 | 9758 | new_symbol (die, type, cu); |
5c4e30ca | 9759 | |
e8e80198 | 9760 | namespace_name (die, &is_anonymous, cu); |
5c4e30ca | 9761 | if (is_anonymous) |
0114d602 DJ |
9762 | { |
9763 | const char *previous_prefix = determine_prefix (die, cu); | |
9a619af0 | 9764 | |
c0cc3a76 | 9765 | cp_add_using_directive (previous_prefix, TYPE_NAME (type), NULL, |
32019081 | 9766 | NULL, NULL, &objfile->objfile_obstack); |
0114d602 | 9767 | } |
5c4e30ca | 9768 | } |
9219021c | 9769 | |
639d11d3 | 9770 | if (die->child != NULL) |
d9fa45fe | 9771 | { |
639d11d3 | 9772 | struct die_info *child_die = die->child; |
6e70227d | 9773 | |
d9fa45fe DC |
9774 | while (child_die && child_die->tag) |
9775 | { | |
e7c27a73 | 9776 | process_die (child_die, cu); |
d9fa45fe DC |
9777 | child_die = sibling_die (child_die); |
9778 | } | |
9779 | } | |
38d518c9 EZ |
9780 | } |
9781 | ||
f55ee35c JK |
9782 | /* Read a Fortran module as type. This DIE can be only a declaration used for |
9783 | imported module. Still we need that type as local Fortran "use ... only" | |
9784 | declaration imports depend on the created type in determine_prefix. */ | |
9785 | ||
9786 | static struct type * | |
9787 | read_module_type (struct die_info *die, struct dwarf2_cu *cu) | |
9788 | { | |
9789 | struct objfile *objfile = cu->objfile; | |
9790 | char *module_name; | |
9791 | struct type *type; | |
9792 | ||
9793 | module_name = dwarf2_name (die, cu); | |
9794 | if (!module_name) | |
3e43a32a MS |
9795 | complaint (&symfile_complaints, |
9796 | _("DW_TAG_module has no name, offset 0x%x"), | |
b64f50a1 | 9797 | die->offset.sect_off); |
f55ee35c JK |
9798 | type = init_type (TYPE_CODE_MODULE, 0, 0, module_name, objfile); |
9799 | ||
9800 | /* determine_prefix uses TYPE_TAG_NAME. */ | |
9801 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
9802 | ||
9803 | return set_die_type (die, type, cu); | |
9804 | } | |
9805 | ||
5d7cb8df JK |
9806 | /* Read a Fortran module. */ |
9807 | ||
9808 | static void | |
9809 | read_module (struct die_info *die, struct dwarf2_cu *cu) | |
9810 | { | |
9811 | struct die_info *child_die = die->child; | |
9812 | ||
5d7cb8df JK |
9813 | while (child_die && child_die->tag) |
9814 | { | |
9815 | process_die (child_die, cu); | |
9816 | child_die = sibling_die (child_die); | |
9817 | } | |
9818 | } | |
9819 | ||
38d518c9 EZ |
9820 | /* Return the name of the namespace represented by DIE. Set |
9821 | *IS_ANONYMOUS to tell whether or not the namespace is an anonymous | |
9822 | namespace. */ | |
9823 | ||
9824 | static const char * | |
e142c38c | 9825 | namespace_name (struct die_info *die, int *is_anonymous, struct dwarf2_cu *cu) |
38d518c9 EZ |
9826 | { |
9827 | struct die_info *current_die; | |
9828 | const char *name = NULL; | |
9829 | ||
9830 | /* Loop through the extensions until we find a name. */ | |
9831 | ||
9832 | for (current_die = die; | |
9833 | current_die != NULL; | |
f2f0e013 | 9834 | current_die = dwarf2_extension (die, &cu)) |
38d518c9 | 9835 | { |
e142c38c | 9836 | name = dwarf2_name (current_die, cu); |
38d518c9 EZ |
9837 | if (name != NULL) |
9838 | break; | |
9839 | } | |
9840 | ||
9841 | /* Is it an anonymous namespace? */ | |
9842 | ||
9843 | *is_anonymous = (name == NULL); | |
9844 | if (*is_anonymous) | |
2b1dbab0 | 9845 | name = CP_ANONYMOUS_NAMESPACE_STR; |
38d518c9 EZ |
9846 | |
9847 | return name; | |
d9fa45fe DC |
9848 | } |
9849 | ||
c906108c SS |
9850 | /* Extract all information from a DW_TAG_pointer_type DIE and add to |
9851 | the user defined type vector. */ | |
9852 | ||
f792889a | 9853 | static struct type * |
e7c27a73 | 9854 | read_tag_pointer_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 9855 | { |
5e2b427d | 9856 | struct gdbarch *gdbarch = get_objfile_arch (cu->objfile); |
e7c27a73 | 9857 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 9858 | struct type *type; |
8b2dbe47 KB |
9859 | struct attribute *attr_byte_size; |
9860 | struct attribute *attr_address_class; | |
9861 | int byte_size, addr_class; | |
7e314c57 JK |
9862 | struct type *target_type; |
9863 | ||
9864 | target_type = die_type (die, cu); | |
c906108c | 9865 | |
7e314c57 JK |
9866 | /* The die_type call above may have already set the type for this DIE. */ |
9867 | type = get_die_type (die, cu); | |
9868 | if (type) | |
9869 | return type; | |
9870 | ||
9871 | type = lookup_pointer_type (target_type); | |
8b2dbe47 | 9872 | |
e142c38c | 9873 | attr_byte_size = dwarf2_attr (die, DW_AT_byte_size, cu); |
8b2dbe47 KB |
9874 | if (attr_byte_size) |
9875 | byte_size = DW_UNSND (attr_byte_size); | |
c906108c | 9876 | else |
8b2dbe47 KB |
9877 | byte_size = cu_header->addr_size; |
9878 | ||
e142c38c | 9879 | attr_address_class = dwarf2_attr (die, DW_AT_address_class, cu); |
8b2dbe47 KB |
9880 | if (attr_address_class) |
9881 | addr_class = DW_UNSND (attr_address_class); | |
9882 | else | |
9883 | addr_class = DW_ADDR_none; | |
9884 | ||
9885 | /* If the pointer size or address class is different than the | |
9886 | default, create a type variant marked as such and set the | |
9887 | length accordingly. */ | |
9888 | if (TYPE_LENGTH (type) != byte_size || addr_class != DW_ADDR_none) | |
c906108c | 9889 | { |
5e2b427d | 9890 | if (gdbarch_address_class_type_flags_p (gdbarch)) |
8b2dbe47 KB |
9891 | { |
9892 | int type_flags; | |
9893 | ||
849957d9 | 9894 | type_flags = gdbarch_address_class_type_flags |
5e2b427d | 9895 | (gdbarch, byte_size, addr_class); |
876cecd0 TT |
9896 | gdb_assert ((type_flags & ~TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL) |
9897 | == 0); | |
8b2dbe47 KB |
9898 | type = make_type_with_address_space (type, type_flags); |
9899 | } | |
9900 | else if (TYPE_LENGTH (type) != byte_size) | |
9901 | { | |
3e43a32a MS |
9902 | complaint (&symfile_complaints, |
9903 | _("invalid pointer size %d"), byte_size); | |
8b2dbe47 | 9904 | } |
6e70227d | 9905 | else |
9a619af0 MS |
9906 | { |
9907 | /* Should we also complain about unhandled address classes? */ | |
9908 | } | |
c906108c | 9909 | } |
8b2dbe47 KB |
9910 | |
9911 | TYPE_LENGTH (type) = byte_size; | |
f792889a | 9912 | return set_die_type (die, type, cu); |
c906108c SS |
9913 | } |
9914 | ||
9915 | /* Extract all information from a DW_TAG_ptr_to_member_type DIE and add to | |
9916 | the user defined type vector. */ | |
9917 | ||
f792889a | 9918 | static struct type * |
e7c27a73 | 9919 | read_tag_ptr_to_member_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
9920 | { |
9921 | struct type *type; | |
9922 | struct type *to_type; | |
9923 | struct type *domain; | |
9924 | ||
e7c27a73 DJ |
9925 | to_type = die_type (die, cu); |
9926 | domain = die_containing_type (die, cu); | |
0d5de010 | 9927 | |
7e314c57 JK |
9928 | /* The calls above may have already set the type for this DIE. */ |
9929 | type = get_die_type (die, cu); | |
9930 | if (type) | |
9931 | return type; | |
9932 | ||
0d5de010 DJ |
9933 | if (TYPE_CODE (check_typedef (to_type)) == TYPE_CODE_METHOD) |
9934 | type = lookup_methodptr_type (to_type); | |
9935 | else | |
9936 | type = lookup_memberptr_type (to_type, domain); | |
c906108c | 9937 | |
f792889a | 9938 | return set_die_type (die, type, cu); |
c906108c SS |
9939 | } |
9940 | ||
9941 | /* Extract all information from a DW_TAG_reference_type DIE and add to | |
9942 | the user defined type vector. */ | |
9943 | ||
f792889a | 9944 | static struct type * |
e7c27a73 | 9945 | read_tag_reference_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 9946 | { |
e7c27a73 | 9947 | struct comp_unit_head *cu_header = &cu->header; |
7e314c57 | 9948 | struct type *type, *target_type; |
c906108c SS |
9949 | struct attribute *attr; |
9950 | ||
7e314c57 JK |
9951 | target_type = die_type (die, cu); |
9952 | ||
9953 | /* The die_type call above may have already set the type for this DIE. */ | |
9954 | type = get_die_type (die, cu); | |
9955 | if (type) | |
9956 | return type; | |
9957 | ||
9958 | type = lookup_reference_type (target_type); | |
e142c38c | 9959 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
9960 | if (attr) |
9961 | { | |
9962 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
9963 | } | |
9964 | else | |
9965 | { | |
107d2387 | 9966 | TYPE_LENGTH (type) = cu_header->addr_size; |
c906108c | 9967 | } |
f792889a | 9968 | return set_die_type (die, type, cu); |
c906108c SS |
9969 | } |
9970 | ||
f792889a | 9971 | static struct type * |
e7c27a73 | 9972 | read_tag_const_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 9973 | { |
f792889a | 9974 | struct type *base_type, *cv_type; |
c906108c | 9975 | |
e7c27a73 | 9976 | base_type = die_type (die, cu); |
7e314c57 JK |
9977 | |
9978 | /* The die_type call above may have already set the type for this DIE. */ | |
9979 | cv_type = get_die_type (die, cu); | |
9980 | if (cv_type) | |
9981 | return cv_type; | |
9982 | ||
2f608a3a KW |
9983 | /* In case the const qualifier is applied to an array type, the element type |
9984 | is so qualified, not the array type (section 6.7.3 of C99). */ | |
9985 | if (TYPE_CODE (base_type) == TYPE_CODE_ARRAY) | |
9986 | { | |
9987 | struct type *el_type, *inner_array; | |
9988 | ||
9989 | base_type = copy_type (base_type); | |
9990 | inner_array = base_type; | |
9991 | ||
9992 | while (TYPE_CODE (TYPE_TARGET_TYPE (inner_array)) == TYPE_CODE_ARRAY) | |
9993 | { | |
9994 | TYPE_TARGET_TYPE (inner_array) = | |
9995 | copy_type (TYPE_TARGET_TYPE (inner_array)); | |
9996 | inner_array = TYPE_TARGET_TYPE (inner_array); | |
9997 | } | |
9998 | ||
9999 | el_type = TYPE_TARGET_TYPE (inner_array); | |
10000 | TYPE_TARGET_TYPE (inner_array) = | |
10001 | make_cv_type (1, TYPE_VOLATILE (el_type), el_type, NULL); | |
10002 | ||
10003 | return set_die_type (die, base_type, cu); | |
10004 | } | |
10005 | ||
f792889a DJ |
10006 | cv_type = make_cv_type (1, TYPE_VOLATILE (base_type), base_type, 0); |
10007 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
10008 | } |
10009 | ||
f792889a | 10010 | static struct type * |
e7c27a73 | 10011 | read_tag_volatile_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 10012 | { |
f792889a | 10013 | struct type *base_type, *cv_type; |
c906108c | 10014 | |
e7c27a73 | 10015 | base_type = die_type (die, cu); |
7e314c57 JK |
10016 | |
10017 | /* The die_type call above may have already set the type for this DIE. */ | |
10018 | cv_type = get_die_type (die, cu); | |
10019 | if (cv_type) | |
10020 | return cv_type; | |
10021 | ||
f792889a DJ |
10022 | cv_type = make_cv_type (TYPE_CONST (base_type), 1, base_type, 0); |
10023 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
10024 | } |
10025 | ||
10026 | /* Extract all information from a DW_TAG_string_type DIE and add to | |
10027 | the user defined type vector. It isn't really a user defined type, | |
10028 | but it behaves like one, with other DIE's using an AT_user_def_type | |
10029 | attribute to reference it. */ | |
10030 | ||
f792889a | 10031 | static struct type * |
e7c27a73 | 10032 | read_tag_string_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 10033 | { |
e7c27a73 | 10034 | struct objfile *objfile = cu->objfile; |
3b7538c0 | 10035 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
10036 | struct type *type, *range_type, *index_type, *char_type; |
10037 | struct attribute *attr; | |
10038 | unsigned int length; | |
10039 | ||
e142c38c | 10040 | attr = dwarf2_attr (die, DW_AT_string_length, cu); |
c906108c SS |
10041 | if (attr) |
10042 | { | |
10043 | length = DW_UNSND (attr); | |
10044 | } | |
10045 | else | |
10046 | { | |
0963b4bd | 10047 | /* Check for the DW_AT_byte_size attribute. */ |
e142c38c | 10048 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
b21b22e0 PS |
10049 | if (attr) |
10050 | { | |
10051 | length = DW_UNSND (attr); | |
10052 | } | |
10053 | else | |
10054 | { | |
10055 | length = 1; | |
10056 | } | |
c906108c | 10057 | } |
6ccb9162 | 10058 | |
46bf5051 | 10059 | index_type = objfile_type (objfile)->builtin_int; |
c906108c | 10060 | range_type = create_range_type (NULL, index_type, 1, length); |
3b7538c0 UW |
10061 | char_type = language_string_char_type (cu->language_defn, gdbarch); |
10062 | type = create_string_type (NULL, char_type, range_type); | |
6ccb9162 | 10063 | |
f792889a | 10064 | return set_die_type (die, type, cu); |
c906108c SS |
10065 | } |
10066 | ||
10067 | /* Handle DIES due to C code like: | |
10068 | ||
10069 | struct foo | |
c5aa993b JM |
10070 | { |
10071 | int (*funcp)(int a, long l); | |
10072 | int b; | |
10073 | }; | |
c906108c | 10074 | |
0963b4bd | 10075 | ('funcp' generates a DW_TAG_subroutine_type DIE). */ |
c906108c | 10076 | |
f792889a | 10077 | static struct type * |
e7c27a73 | 10078 | read_subroutine_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 10079 | { |
bb5ed363 | 10080 | struct objfile *objfile = cu->objfile; |
0963b4bd MS |
10081 | struct type *type; /* Type that this function returns. */ |
10082 | struct type *ftype; /* Function that returns above type. */ | |
c906108c SS |
10083 | struct attribute *attr; |
10084 | ||
e7c27a73 | 10085 | type = die_type (die, cu); |
7e314c57 JK |
10086 | |
10087 | /* The die_type call above may have already set the type for this DIE. */ | |
10088 | ftype = get_die_type (die, cu); | |
10089 | if (ftype) | |
10090 | return ftype; | |
10091 | ||
0c8b41f1 | 10092 | ftype = lookup_function_type (type); |
c906108c | 10093 | |
5b8101ae | 10094 | /* All functions in C++, Pascal and Java have prototypes. */ |
e142c38c | 10095 | attr = dwarf2_attr (die, DW_AT_prototyped, cu); |
c906108c | 10096 | if ((attr && (DW_UNSND (attr) != 0)) |
987504bb | 10097 | || cu->language == language_cplus |
5b8101ae PM |
10098 | || cu->language == language_java |
10099 | || cu->language == language_pascal) | |
876cecd0 | 10100 | TYPE_PROTOTYPED (ftype) = 1; |
a6c727b2 DJ |
10101 | else if (producer_is_realview (cu->producer)) |
10102 | /* RealView does not emit DW_AT_prototyped. We can not | |
10103 | distinguish prototyped and unprototyped functions; default to | |
10104 | prototyped, since that is more common in modern code (and | |
10105 | RealView warns about unprototyped functions). */ | |
10106 | TYPE_PROTOTYPED (ftype) = 1; | |
c906108c | 10107 | |
c055b101 CV |
10108 | /* Store the calling convention in the type if it's available in |
10109 | the subroutine die. Otherwise set the calling convention to | |
10110 | the default value DW_CC_normal. */ | |
10111 | attr = dwarf2_attr (die, DW_AT_calling_convention, cu); | |
54fcddd0 UW |
10112 | if (attr) |
10113 | TYPE_CALLING_CONVENTION (ftype) = DW_UNSND (attr); | |
10114 | else if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL")) | |
10115 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_GDB_IBM_OpenCL; | |
10116 | else | |
10117 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_normal; | |
76c10ea2 GM |
10118 | |
10119 | /* We need to add the subroutine type to the die immediately so | |
10120 | we don't infinitely recurse when dealing with parameters | |
0963b4bd | 10121 | declared as the same subroutine type. */ |
76c10ea2 | 10122 | set_die_type (die, ftype, cu); |
6e70227d | 10123 | |
639d11d3 | 10124 | if (die->child != NULL) |
c906108c | 10125 | { |
bb5ed363 | 10126 | struct type *void_type = objfile_type (objfile)->builtin_void; |
c906108c | 10127 | struct die_info *child_die; |
8072405b | 10128 | int nparams, iparams; |
c906108c SS |
10129 | |
10130 | /* Count the number of parameters. | |
10131 | FIXME: GDB currently ignores vararg functions, but knows about | |
10132 | vararg member functions. */ | |
8072405b | 10133 | nparams = 0; |
639d11d3 | 10134 | child_die = die->child; |
c906108c SS |
10135 | while (child_die && child_die->tag) |
10136 | { | |
10137 | if (child_die->tag == DW_TAG_formal_parameter) | |
10138 | nparams++; | |
10139 | else if (child_die->tag == DW_TAG_unspecified_parameters) | |
876cecd0 | 10140 | TYPE_VARARGS (ftype) = 1; |
c906108c SS |
10141 | child_die = sibling_die (child_die); |
10142 | } | |
10143 | ||
10144 | /* Allocate storage for parameters and fill them in. */ | |
10145 | TYPE_NFIELDS (ftype) = nparams; | |
10146 | TYPE_FIELDS (ftype) = (struct field *) | |
ae5a43e0 | 10147 | TYPE_ZALLOC (ftype, nparams * sizeof (struct field)); |
c906108c | 10148 | |
8072405b JK |
10149 | /* TYPE_FIELD_TYPE must never be NULL. Pre-fill the array to ensure it |
10150 | even if we error out during the parameters reading below. */ | |
10151 | for (iparams = 0; iparams < nparams; iparams++) | |
10152 | TYPE_FIELD_TYPE (ftype, iparams) = void_type; | |
10153 | ||
10154 | iparams = 0; | |
639d11d3 | 10155 | child_die = die->child; |
c906108c SS |
10156 | while (child_die && child_die->tag) |
10157 | { | |
10158 | if (child_die->tag == DW_TAG_formal_parameter) | |
10159 | { | |
3ce3b1ba PA |
10160 | struct type *arg_type; |
10161 | ||
10162 | /* DWARF version 2 has no clean way to discern C++ | |
10163 | static and non-static member functions. G++ helps | |
10164 | GDB by marking the first parameter for non-static | |
10165 | member functions (which is the this pointer) as | |
10166 | artificial. We pass this information to | |
10167 | dwarf2_add_member_fn via TYPE_FIELD_ARTIFICIAL. | |
10168 | ||
10169 | DWARF version 3 added DW_AT_object_pointer, which GCC | |
10170 | 4.5 does not yet generate. */ | |
e142c38c | 10171 | attr = dwarf2_attr (child_die, DW_AT_artificial, cu); |
c906108c SS |
10172 | if (attr) |
10173 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = DW_UNSND (attr); | |
10174 | else | |
418835cc KS |
10175 | { |
10176 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; | |
10177 | ||
10178 | /* GCC/43521: In java, the formal parameter | |
10179 | "this" is sometimes not marked with DW_AT_artificial. */ | |
10180 | if (cu->language == language_java) | |
10181 | { | |
10182 | const char *name = dwarf2_name (child_die, cu); | |
9a619af0 | 10183 | |
418835cc KS |
10184 | if (name && !strcmp (name, "this")) |
10185 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 1; | |
10186 | } | |
10187 | } | |
3ce3b1ba PA |
10188 | arg_type = die_type (child_die, cu); |
10189 | ||
10190 | /* RealView does not mark THIS as const, which the testsuite | |
10191 | expects. GCC marks THIS as const in method definitions, | |
10192 | but not in the class specifications (GCC PR 43053). */ | |
10193 | if (cu->language == language_cplus && !TYPE_CONST (arg_type) | |
10194 | && TYPE_FIELD_ARTIFICIAL (ftype, iparams)) | |
10195 | { | |
10196 | int is_this = 0; | |
10197 | struct dwarf2_cu *arg_cu = cu; | |
10198 | const char *name = dwarf2_name (child_die, cu); | |
10199 | ||
10200 | attr = dwarf2_attr (die, DW_AT_object_pointer, cu); | |
10201 | if (attr) | |
10202 | { | |
10203 | /* If the compiler emits this, use it. */ | |
10204 | if (follow_die_ref (die, attr, &arg_cu) == child_die) | |
10205 | is_this = 1; | |
10206 | } | |
10207 | else if (name && strcmp (name, "this") == 0) | |
10208 | /* Function definitions will have the argument names. */ | |
10209 | is_this = 1; | |
10210 | else if (name == NULL && iparams == 0) | |
10211 | /* Declarations may not have the names, so like | |
10212 | elsewhere in GDB, assume an artificial first | |
10213 | argument is "this". */ | |
10214 | is_this = 1; | |
10215 | ||
10216 | if (is_this) | |
10217 | arg_type = make_cv_type (1, TYPE_VOLATILE (arg_type), | |
10218 | arg_type, 0); | |
10219 | } | |
10220 | ||
10221 | TYPE_FIELD_TYPE (ftype, iparams) = arg_type; | |
c906108c SS |
10222 | iparams++; |
10223 | } | |
10224 | child_die = sibling_die (child_die); | |
10225 | } | |
10226 | } | |
10227 | ||
76c10ea2 | 10228 | return ftype; |
c906108c SS |
10229 | } |
10230 | ||
f792889a | 10231 | static struct type * |
e7c27a73 | 10232 | read_typedef (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 10233 | { |
e7c27a73 | 10234 | struct objfile *objfile = cu->objfile; |
0114d602 | 10235 | const char *name = NULL; |
3c8e0968 | 10236 | struct type *this_type, *target_type; |
c906108c | 10237 | |
94af9270 | 10238 | name = dwarf2_full_name (NULL, die, cu); |
f792889a | 10239 | this_type = init_type (TYPE_CODE_TYPEDEF, 0, |
0114d602 DJ |
10240 | TYPE_FLAG_TARGET_STUB, NULL, objfile); |
10241 | TYPE_NAME (this_type) = (char *) name; | |
f792889a | 10242 | set_die_type (die, this_type, cu); |
3c8e0968 DE |
10243 | target_type = die_type (die, cu); |
10244 | if (target_type != this_type) | |
10245 | TYPE_TARGET_TYPE (this_type) = target_type; | |
10246 | else | |
10247 | { | |
10248 | /* Self-referential typedefs are, it seems, not allowed by the DWARF | |
10249 | spec and cause infinite loops in GDB. */ | |
10250 | complaint (&symfile_complaints, | |
10251 | _("Self-referential DW_TAG_typedef " | |
10252 | "- DIE at 0x%x [in module %s]"), | |
b64f50a1 | 10253 | die->offset.sect_off, objfile->name); |
3c8e0968 DE |
10254 | TYPE_TARGET_TYPE (this_type) = NULL; |
10255 | } | |
f792889a | 10256 | return this_type; |
c906108c SS |
10257 | } |
10258 | ||
10259 | /* Find a representation of a given base type and install | |
10260 | it in the TYPE field of the die. */ | |
10261 | ||
f792889a | 10262 | static struct type * |
e7c27a73 | 10263 | read_base_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 10264 | { |
e7c27a73 | 10265 | struct objfile *objfile = cu->objfile; |
c906108c SS |
10266 | struct type *type; |
10267 | struct attribute *attr; | |
10268 | int encoding = 0, size = 0; | |
39cbfefa | 10269 | char *name; |
6ccb9162 UW |
10270 | enum type_code code = TYPE_CODE_INT; |
10271 | int type_flags = 0; | |
10272 | struct type *target_type = NULL; | |
c906108c | 10273 | |
e142c38c | 10274 | attr = dwarf2_attr (die, DW_AT_encoding, cu); |
c906108c SS |
10275 | if (attr) |
10276 | { | |
10277 | encoding = DW_UNSND (attr); | |
10278 | } | |
e142c38c | 10279 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
10280 | if (attr) |
10281 | { | |
10282 | size = DW_UNSND (attr); | |
10283 | } | |
39cbfefa | 10284 | name = dwarf2_name (die, cu); |
6ccb9162 | 10285 | if (!name) |
c906108c | 10286 | { |
6ccb9162 UW |
10287 | complaint (&symfile_complaints, |
10288 | _("DW_AT_name missing from DW_TAG_base_type")); | |
c906108c | 10289 | } |
6ccb9162 UW |
10290 | |
10291 | switch (encoding) | |
c906108c | 10292 | { |
6ccb9162 UW |
10293 | case DW_ATE_address: |
10294 | /* Turn DW_ATE_address into a void * pointer. */ | |
10295 | code = TYPE_CODE_PTR; | |
10296 | type_flags |= TYPE_FLAG_UNSIGNED; | |
10297 | target_type = init_type (TYPE_CODE_VOID, 1, 0, NULL, objfile); | |
10298 | break; | |
10299 | case DW_ATE_boolean: | |
10300 | code = TYPE_CODE_BOOL; | |
10301 | type_flags |= TYPE_FLAG_UNSIGNED; | |
10302 | break; | |
10303 | case DW_ATE_complex_float: | |
10304 | code = TYPE_CODE_COMPLEX; | |
10305 | target_type = init_type (TYPE_CODE_FLT, size / 2, 0, NULL, objfile); | |
10306 | break; | |
10307 | case DW_ATE_decimal_float: | |
10308 | code = TYPE_CODE_DECFLOAT; | |
10309 | break; | |
10310 | case DW_ATE_float: | |
10311 | code = TYPE_CODE_FLT; | |
10312 | break; | |
10313 | case DW_ATE_signed: | |
10314 | break; | |
10315 | case DW_ATE_unsigned: | |
10316 | type_flags |= TYPE_FLAG_UNSIGNED; | |
3b2b8fea TT |
10317 | if (cu->language == language_fortran |
10318 | && name | |
10319 | && strncmp (name, "character(", sizeof ("character(") - 1) == 0) | |
10320 | code = TYPE_CODE_CHAR; | |
6ccb9162 UW |
10321 | break; |
10322 | case DW_ATE_signed_char: | |
6e70227d | 10323 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea TT |
10324 | || cu->language == language_pascal |
10325 | || cu->language == language_fortran) | |
6ccb9162 UW |
10326 | code = TYPE_CODE_CHAR; |
10327 | break; | |
10328 | case DW_ATE_unsigned_char: | |
868a0084 | 10329 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea TT |
10330 | || cu->language == language_pascal |
10331 | || cu->language == language_fortran) | |
6ccb9162 UW |
10332 | code = TYPE_CODE_CHAR; |
10333 | type_flags |= TYPE_FLAG_UNSIGNED; | |
10334 | break; | |
75079b2b TT |
10335 | case DW_ATE_UTF: |
10336 | /* We just treat this as an integer and then recognize the | |
10337 | type by name elsewhere. */ | |
10338 | break; | |
10339 | ||
6ccb9162 UW |
10340 | default: |
10341 | complaint (&symfile_complaints, _("unsupported DW_AT_encoding: '%s'"), | |
10342 | dwarf_type_encoding_name (encoding)); | |
10343 | break; | |
c906108c | 10344 | } |
6ccb9162 | 10345 | |
0114d602 DJ |
10346 | type = init_type (code, size, type_flags, NULL, objfile); |
10347 | TYPE_NAME (type) = name; | |
6ccb9162 UW |
10348 | TYPE_TARGET_TYPE (type) = target_type; |
10349 | ||
0114d602 | 10350 | if (name && strcmp (name, "char") == 0) |
876cecd0 | 10351 | TYPE_NOSIGN (type) = 1; |
0114d602 | 10352 | |
f792889a | 10353 | return set_die_type (die, type, cu); |
c906108c SS |
10354 | } |
10355 | ||
a02abb62 JB |
10356 | /* Read the given DW_AT_subrange DIE. */ |
10357 | ||
f792889a | 10358 | static struct type * |
a02abb62 JB |
10359 | read_subrange_type (struct die_info *die, struct dwarf2_cu *cu) |
10360 | { | |
10361 | struct type *base_type; | |
10362 | struct type *range_type; | |
10363 | struct attribute *attr; | |
4fae6e18 JK |
10364 | LONGEST low, high; |
10365 | int low_default_is_valid; | |
39cbfefa | 10366 | char *name; |
43bbcdc2 | 10367 | LONGEST negative_mask; |
e77813c8 | 10368 | |
a02abb62 | 10369 | base_type = die_type (die, cu); |
953ac07e JK |
10370 | /* Preserve BASE_TYPE's original type, just set its LENGTH. */ |
10371 | check_typedef (base_type); | |
a02abb62 | 10372 | |
7e314c57 JK |
10373 | /* The die_type call above may have already set the type for this DIE. */ |
10374 | range_type = get_die_type (die, cu); | |
10375 | if (range_type) | |
10376 | return range_type; | |
10377 | ||
4fae6e18 JK |
10378 | /* Set LOW_DEFAULT_IS_VALID if current language and DWARF version allow |
10379 | omitting DW_AT_lower_bound. */ | |
10380 | switch (cu->language) | |
6e70227d | 10381 | { |
4fae6e18 JK |
10382 | case language_c: |
10383 | case language_cplus: | |
10384 | low = 0; | |
10385 | low_default_is_valid = 1; | |
10386 | break; | |
10387 | case language_fortran: | |
10388 | low = 1; | |
10389 | low_default_is_valid = 1; | |
10390 | break; | |
10391 | case language_d: | |
10392 | case language_java: | |
10393 | case language_objc: | |
10394 | low = 0; | |
10395 | low_default_is_valid = (cu->header.version >= 4); | |
10396 | break; | |
10397 | case language_ada: | |
10398 | case language_m2: | |
10399 | case language_pascal: | |
a02abb62 | 10400 | low = 1; |
4fae6e18 JK |
10401 | low_default_is_valid = (cu->header.version >= 4); |
10402 | break; | |
10403 | default: | |
10404 | low = 0; | |
10405 | low_default_is_valid = 0; | |
10406 | break; | |
a02abb62 JB |
10407 | } |
10408 | ||
dd5e6932 DJ |
10409 | /* FIXME: For variable sized arrays either of these could be |
10410 | a variable rather than a constant value. We'll allow it, | |
10411 | but we don't know how to handle it. */ | |
e142c38c | 10412 | attr = dwarf2_attr (die, DW_AT_lower_bound, cu); |
a02abb62 | 10413 | if (attr) |
4fae6e18 JK |
10414 | low = dwarf2_get_attr_constant_value (attr, low); |
10415 | else if (!low_default_is_valid) | |
10416 | complaint (&symfile_complaints, _("Missing DW_AT_lower_bound " | |
10417 | "- DIE at 0x%x [in module %s]"), | |
10418 | die->offset.sect_off, cu->objfile->name); | |
a02abb62 | 10419 | |
e142c38c | 10420 | attr = dwarf2_attr (die, DW_AT_upper_bound, cu); |
a02abb62 | 10421 | if (attr) |
6e70227d | 10422 | { |
d48323d8 | 10423 | if (attr_form_is_block (attr) || is_ref_attr (attr)) |
a02abb62 JB |
10424 | { |
10425 | /* GCC encodes arrays with unspecified or dynamic length | |
e77813c8 | 10426 | with a DW_FORM_block1 attribute or a reference attribute. |
a02abb62 JB |
10427 | FIXME: GDB does not yet know how to handle dynamic |
10428 | arrays properly, treat them as arrays with unspecified | |
10429 | length for now. | |
10430 | ||
10431 | FIXME: jimb/2003-09-22: GDB does not really know | |
10432 | how to handle arrays of unspecified length | |
10433 | either; we just represent them as zero-length | |
10434 | arrays. Choose an appropriate upper bound given | |
10435 | the lower bound we've computed above. */ | |
10436 | high = low - 1; | |
10437 | } | |
10438 | else | |
10439 | high = dwarf2_get_attr_constant_value (attr, 1); | |
10440 | } | |
e77813c8 PM |
10441 | else |
10442 | { | |
10443 | attr = dwarf2_attr (die, DW_AT_count, cu); | |
10444 | if (attr) | |
10445 | { | |
10446 | int count = dwarf2_get_attr_constant_value (attr, 1); | |
10447 | high = low + count - 1; | |
10448 | } | |
c2ff108b JK |
10449 | else |
10450 | { | |
10451 | /* Unspecified array length. */ | |
10452 | high = low - 1; | |
10453 | } | |
e77813c8 PM |
10454 | } |
10455 | ||
10456 | /* Dwarf-2 specifications explicitly allows to create subrange types | |
10457 | without specifying a base type. | |
10458 | In that case, the base type must be set to the type of | |
10459 | the lower bound, upper bound or count, in that order, if any of these | |
10460 | three attributes references an object that has a type. | |
10461 | If no base type is found, the Dwarf-2 specifications say that | |
10462 | a signed integer type of size equal to the size of an address should | |
10463 | be used. | |
10464 | For the following C code: `extern char gdb_int [];' | |
10465 | GCC produces an empty range DIE. | |
10466 | FIXME: muller/2010-05-28: Possible references to object for low bound, | |
0963b4bd | 10467 | high bound or count are not yet handled by this code. */ |
e77813c8 PM |
10468 | if (TYPE_CODE (base_type) == TYPE_CODE_VOID) |
10469 | { | |
10470 | struct objfile *objfile = cu->objfile; | |
10471 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
10472 | int addr_size = gdbarch_addr_bit (gdbarch) /8; | |
10473 | struct type *int_type = objfile_type (objfile)->builtin_int; | |
10474 | ||
10475 | /* Test "int", "long int", and "long long int" objfile types, | |
10476 | and select the first one having a size above or equal to the | |
10477 | architecture address size. */ | |
10478 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
10479 | base_type = int_type; | |
10480 | else | |
10481 | { | |
10482 | int_type = objfile_type (objfile)->builtin_long; | |
10483 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
10484 | base_type = int_type; | |
10485 | else | |
10486 | { | |
10487 | int_type = objfile_type (objfile)->builtin_long_long; | |
10488 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
10489 | base_type = int_type; | |
10490 | } | |
10491 | } | |
10492 | } | |
a02abb62 | 10493 | |
6e70227d | 10494 | negative_mask = |
43bbcdc2 PH |
10495 | (LONGEST) -1 << (TYPE_LENGTH (base_type) * TARGET_CHAR_BIT - 1); |
10496 | if (!TYPE_UNSIGNED (base_type) && (low & negative_mask)) | |
10497 | low |= negative_mask; | |
10498 | if (!TYPE_UNSIGNED (base_type) && (high & negative_mask)) | |
10499 | high |= negative_mask; | |
10500 | ||
a02abb62 JB |
10501 | range_type = create_range_type (NULL, base_type, low, high); |
10502 | ||
bbb0eef6 JK |
10503 | /* Mark arrays with dynamic length at least as an array of unspecified |
10504 | length. GDB could check the boundary but before it gets implemented at | |
10505 | least allow accessing the array elements. */ | |
d48323d8 | 10506 | if (attr && attr_form_is_block (attr)) |
bbb0eef6 JK |
10507 | TYPE_HIGH_BOUND_UNDEFINED (range_type) = 1; |
10508 | ||
c2ff108b JK |
10509 | /* Ada expects an empty array on no boundary attributes. */ |
10510 | if (attr == NULL && cu->language != language_ada) | |
10511 | TYPE_HIGH_BOUND_UNDEFINED (range_type) = 1; | |
10512 | ||
39cbfefa DJ |
10513 | name = dwarf2_name (die, cu); |
10514 | if (name) | |
10515 | TYPE_NAME (range_type) = name; | |
6e70227d | 10516 | |
e142c38c | 10517 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
a02abb62 JB |
10518 | if (attr) |
10519 | TYPE_LENGTH (range_type) = DW_UNSND (attr); | |
10520 | ||
7e314c57 JK |
10521 | set_die_type (die, range_type, cu); |
10522 | ||
10523 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
10524 | set_descriptive_type (range_type, die, cu); |
10525 | ||
7e314c57 | 10526 | return range_type; |
a02abb62 | 10527 | } |
6e70227d | 10528 | |
f792889a | 10529 | static struct type * |
81a17f79 JB |
10530 | read_unspecified_type (struct die_info *die, struct dwarf2_cu *cu) |
10531 | { | |
10532 | struct type *type; | |
81a17f79 | 10533 | |
81a17f79 JB |
10534 | /* For now, we only support the C meaning of an unspecified type: void. */ |
10535 | ||
0114d602 DJ |
10536 | type = init_type (TYPE_CODE_VOID, 0, 0, NULL, cu->objfile); |
10537 | TYPE_NAME (type) = dwarf2_name (die, cu); | |
81a17f79 | 10538 | |
f792889a | 10539 | return set_die_type (die, type, cu); |
81a17f79 | 10540 | } |
a02abb62 | 10541 | |
639d11d3 DC |
10542 | /* Read a single die and all its descendents. Set the die's sibling |
10543 | field to NULL; set other fields in the die correctly, and set all | |
10544 | of the descendents' fields correctly. Set *NEW_INFO_PTR to the | |
10545 | location of the info_ptr after reading all of those dies. PARENT | |
10546 | is the parent of the die in question. */ | |
10547 | ||
10548 | static struct die_info * | |
dee91e82 DE |
10549 | read_die_and_children (const struct die_reader_specs *reader, |
10550 | gdb_byte *info_ptr, | |
10551 | gdb_byte **new_info_ptr, | |
10552 | struct die_info *parent) | |
639d11d3 DC |
10553 | { |
10554 | struct die_info *die; | |
fe1b8b76 | 10555 | gdb_byte *cur_ptr; |
639d11d3 DC |
10556 | int has_children; |
10557 | ||
93311388 | 10558 | cur_ptr = read_full_die (reader, &die, info_ptr, &has_children); |
1d325ec1 DJ |
10559 | if (die == NULL) |
10560 | { | |
10561 | *new_info_ptr = cur_ptr; | |
10562 | return NULL; | |
10563 | } | |
93311388 | 10564 | store_in_ref_table (die, reader->cu); |
639d11d3 DC |
10565 | |
10566 | if (has_children) | |
348e048f | 10567 | die->child = read_die_and_siblings (reader, cur_ptr, new_info_ptr, die); |
639d11d3 DC |
10568 | else |
10569 | { | |
10570 | die->child = NULL; | |
10571 | *new_info_ptr = cur_ptr; | |
10572 | } | |
10573 | ||
10574 | die->sibling = NULL; | |
10575 | die->parent = parent; | |
10576 | return die; | |
10577 | } | |
10578 | ||
10579 | /* Read a die, all of its descendents, and all of its siblings; set | |
10580 | all of the fields of all of the dies correctly. Arguments are as | |
10581 | in read_die_and_children. */ | |
10582 | ||
10583 | static struct die_info * | |
93311388 DE |
10584 | read_die_and_siblings (const struct die_reader_specs *reader, |
10585 | gdb_byte *info_ptr, | |
fe1b8b76 | 10586 | gdb_byte **new_info_ptr, |
639d11d3 DC |
10587 | struct die_info *parent) |
10588 | { | |
10589 | struct die_info *first_die, *last_sibling; | |
fe1b8b76 | 10590 | gdb_byte *cur_ptr; |
639d11d3 | 10591 | |
c906108c | 10592 | cur_ptr = info_ptr; |
639d11d3 DC |
10593 | first_die = last_sibling = NULL; |
10594 | ||
10595 | while (1) | |
c906108c | 10596 | { |
639d11d3 | 10597 | struct die_info *die |
dee91e82 | 10598 | = read_die_and_children (reader, cur_ptr, &cur_ptr, parent); |
639d11d3 | 10599 | |
1d325ec1 | 10600 | if (die == NULL) |
c906108c | 10601 | { |
639d11d3 DC |
10602 | *new_info_ptr = cur_ptr; |
10603 | return first_die; | |
c906108c | 10604 | } |
1d325ec1 DJ |
10605 | |
10606 | if (!first_die) | |
10607 | first_die = die; | |
c906108c | 10608 | else |
1d325ec1 DJ |
10609 | last_sibling->sibling = die; |
10610 | ||
10611 | last_sibling = die; | |
c906108c | 10612 | } |
c906108c SS |
10613 | } |
10614 | ||
3019eac3 DE |
10615 | /* Read a die and all its attributes, leave space for NUM_EXTRA_ATTRS |
10616 | attributes. | |
10617 | The caller is responsible for filling in the extra attributes | |
10618 | and updating (*DIEP)->num_attrs. | |
10619 | Set DIEP to point to a newly allocated die with its information, | |
10620 | except for its child, sibling, and parent fields. | |
10621 | Set HAS_CHILDREN to tell whether the die has children or not. */ | |
93311388 DE |
10622 | |
10623 | static gdb_byte * | |
3019eac3 DE |
10624 | read_full_die_1 (const struct die_reader_specs *reader, |
10625 | struct die_info **diep, gdb_byte *info_ptr, | |
10626 | int *has_children, int num_extra_attrs) | |
93311388 | 10627 | { |
b64f50a1 JK |
10628 | unsigned int abbrev_number, bytes_read, i; |
10629 | sect_offset offset; | |
93311388 DE |
10630 | struct abbrev_info *abbrev; |
10631 | struct die_info *die; | |
10632 | struct dwarf2_cu *cu = reader->cu; | |
10633 | bfd *abfd = reader->abfd; | |
10634 | ||
b64f50a1 | 10635 | offset.sect_off = info_ptr - reader->buffer; |
93311388 DE |
10636 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
10637 | info_ptr += bytes_read; | |
10638 | if (!abbrev_number) | |
10639 | { | |
10640 | *diep = NULL; | |
10641 | *has_children = 0; | |
10642 | return info_ptr; | |
10643 | } | |
10644 | ||
10645 | abbrev = dwarf2_lookup_abbrev (abbrev_number, cu); | |
10646 | if (!abbrev) | |
348e048f DE |
10647 | error (_("Dwarf Error: could not find abbrev number %d [in module %s]"), |
10648 | abbrev_number, | |
10649 | bfd_get_filename (abfd)); | |
10650 | ||
3019eac3 | 10651 | die = dwarf_alloc_die (cu, abbrev->num_attrs + num_extra_attrs); |
93311388 DE |
10652 | die->offset = offset; |
10653 | die->tag = abbrev->tag; | |
10654 | die->abbrev = abbrev_number; | |
10655 | ||
3019eac3 DE |
10656 | /* Make the result usable. |
10657 | The caller needs to update num_attrs after adding the extra | |
10658 | attributes. */ | |
93311388 DE |
10659 | die->num_attrs = abbrev->num_attrs; |
10660 | ||
10661 | for (i = 0; i < abbrev->num_attrs; ++i) | |
dee91e82 DE |
10662 | info_ptr = read_attribute (reader, &die->attrs[i], &abbrev->attrs[i], |
10663 | info_ptr); | |
93311388 DE |
10664 | |
10665 | *diep = die; | |
10666 | *has_children = abbrev->has_children; | |
10667 | return info_ptr; | |
10668 | } | |
10669 | ||
3019eac3 DE |
10670 | /* Read a die and all its attributes. |
10671 | Set DIEP to point to a newly allocated die with its information, | |
10672 | except for its child, sibling, and parent fields. | |
10673 | Set HAS_CHILDREN to tell whether the die has children or not. */ | |
10674 | ||
10675 | static gdb_byte * | |
10676 | read_full_die (const struct die_reader_specs *reader, | |
10677 | struct die_info **diep, gdb_byte *info_ptr, | |
10678 | int *has_children) | |
10679 | { | |
10680 | return read_full_die_1 (reader, diep, info_ptr, has_children, 0); | |
10681 | } | |
10682 | ||
c906108c SS |
10683 | /* In DWARF version 2, the description of the debugging information is |
10684 | stored in a separate .debug_abbrev section. Before we read any | |
10685 | dies from a section we read in all abbreviations and install them | |
72bf9492 DJ |
10686 | in a hash table. This function also sets flags in CU describing |
10687 | the data found in the abbrev table. */ | |
c906108c SS |
10688 | |
10689 | static void | |
dee91e82 DE |
10690 | dwarf2_read_abbrevs (struct dwarf2_cu *cu, |
10691 | struct dwarf2_section_info *abbrev_section) | |
10692 | ||
c906108c | 10693 | { |
dee91e82 | 10694 | bfd *abfd = abbrev_section->asection->owner; |
e7c27a73 | 10695 | struct comp_unit_head *cu_header = &cu->header; |
fe1b8b76 | 10696 | gdb_byte *abbrev_ptr; |
c906108c SS |
10697 | struct abbrev_info *cur_abbrev; |
10698 | unsigned int abbrev_number, bytes_read, abbrev_name; | |
10699 | unsigned int abbrev_form, hash_number; | |
f3dd6933 DJ |
10700 | struct attr_abbrev *cur_attrs; |
10701 | unsigned int allocated_attrs; | |
c906108c | 10702 | |
0963b4bd | 10703 | /* Initialize dwarf2 abbrevs. */ |
f3dd6933 DJ |
10704 | obstack_init (&cu->abbrev_obstack); |
10705 | cu->dwarf2_abbrevs = obstack_alloc (&cu->abbrev_obstack, | |
10706 | (ABBREV_HASH_SIZE | |
10707 | * sizeof (struct abbrev_info *))); | |
10708 | memset (cu->dwarf2_abbrevs, 0, | |
10709 | ABBREV_HASH_SIZE * sizeof (struct abbrev_info *)); | |
c906108c | 10710 | |
dee91e82 DE |
10711 | dwarf2_read_section (cu->objfile, abbrev_section); |
10712 | abbrev_ptr = abbrev_section->buffer + cu_header->abbrev_offset.sect_off; | |
c906108c SS |
10713 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
10714 | abbrev_ptr += bytes_read; | |
10715 | ||
f3dd6933 DJ |
10716 | allocated_attrs = ATTR_ALLOC_CHUNK; |
10717 | cur_attrs = xmalloc (allocated_attrs * sizeof (struct attr_abbrev)); | |
6e70227d | 10718 | |
0963b4bd | 10719 | /* Loop until we reach an abbrev number of 0. */ |
c906108c SS |
10720 | while (abbrev_number) |
10721 | { | |
f3dd6933 | 10722 | cur_abbrev = dwarf_alloc_abbrev (cu); |
c906108c SS |
10723 | |
10724 | /* read in abbrev header */ | |
10725 | cur_abbrev->number = abbrev_number; | |
10726 | cur_abbrev->tag = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
10727 | abbrev_ptr += bytes_read; | |
10728 | cur_abbrev->has_children = read_1_byte (abfd, abbrev_ptr); | |
10729 | abbrev_ptr += 1; | |
10730 | ||
10731 | /* now read in declarations */ | |
10732 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
10733 | abbrev_ptr += bytes_read; | |
10734 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
10735 | abbrev_ptr += bytes_read; | |
10736 | while (abbrev_name) | |
10737 | { | |
f3dd6933 | 10738 | if (cur_abbrev->num_attrs == allocated_attrs) |
c906108c | 10739 | { |
f3dd6933 DJ |
10740 | allocated_attrs += ATTR_ALLOC_CHUNK; |
10741 | cur_attrs | |
10742 | = xrealloc (cur_attrs, (allocated_attrs | |
10743 | * sizeof (struct attr_abbrev))); | |
c906108c | 10744 | } |
ae038cb0 | 10745 | |
f3dd6933 DJ |
10746 | cur_attrs[cur_abbrev->num_attrs].name = abbrev_name; |
10747 | cur_attrs[cur_abbrev->num_attrs++].form = abbrev_form; | |
c906108c SS |
10748 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
10749 | abbrev_ptr += bytes_read; | |
10750 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
10751 | abbrev_ptr += bytes_read; | |
10752 | } | |
10753 | ||
f3dd6933 DJ |
10754 | cur_abbrev->attrs = obstack_alloc (&cu->abbrev_obstack, |
10755 | (cur_abbrev->num_attrs | |
10756 | * sizeof (struct attr_abbrev))); | |
10757 | memcpy (cur_abbrev->attrs, cur_attrs, | |
10758 | cur_abbrev->num_attrs * sizeof (struct attr_abbrev)); | |
10759 | ||
c906108c | 10760 | hash_number = abbrev_number % ABBREV_HASH_SIZE; |
f3dd6933 DJ |
10761 | cur_abbrev->next = cu->dwarf2_abbrevs[hash_number]; |
10762 | cu->dwarf2_abbrevs[hash_number] = cur_abbrev; | |
c906108c SS |
10763 | |
10764 | /* Get next abbreviation. | |
10765 | Under Irix6 the abbreviations for a compilation unit are not | |
c5aa993b JM |
10766 | always properly terminated with an abbrev number of 0. |
10767 | Exit loop if we encounter an abbreviation which we have | |
10768 | already read (which means we are about to read the abbreviations | |
10769 | for the next compile unit) or if the end of the abbreviation | |
10770 | table is reached. */ | |
dee91e82 DE |
10771 | if ((unsigned int) (abbrev_ptr - abbrev_section->buffer) |
10772 | >= abbrev_section->size) | |
c906108c SS |
10773 | break; |
10774 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
10775 | abbrev_ptr += bytes_read; | |
e7c27a73 | 10776 | if (dwarf2_lookup_abbrev (abbrev_number, cu) != NULL) |
c906108c SS |
10777 | break; |
10778 | } | |
f3dd6933 DJ |
10779 | |
10780 | xfree (cur_attrs); | |
c906108c SS |
10781 | } |
10782 | ||
f3dd6933 | 10783 | /* Release the memory used by the abbrev table for a compilation unit. */ |
c906108c | 10784 | |
c906108c | 10785 | static void |
f3dd6933 | 10786 | dwarf2_free_abbrev_table (void *ptr_to_cu) |
c906108c | 10787 | { |
f3dd6933 | 10788 | struct dwarf2_cu *cu = ptr_to_cu; |
c906108c | 10789 | |
f3dd6933 DJ |
10790 | obstack_free (&cu->abbrev_obstack, NULL); |
10791 | cu->dwarf2_abbrevs = NULL; | |
c906108c SS |
10792 | } |
10793 | ||
10794 | /* Lookup an abbrev_info structure in the abbrev hash table. */ | |
10795 | ||
10796 | static struct abbrev_info * | |
e7c27a73 | 10797 | dwarf2_lookup_abbrev (unsigned int number, struct dwarf2_cu *cu) |
c906108c SS |
10798 | { |
10799 | unsigned int hash_number; | |
10800 | struct abbrev_info *abbrev; | |
10801 | ||
10802 | hash_number = number % ABBREV_HASH_SIZE; | |
f3dd6933 | 10803 | abbrev = cu->dwarf2_abbrevs[hash_number]; |
c906108c SS |
10804 | |
10805 | while (abbrev) | |
10806 | { | |
10807 | if (abbrev->number == number) | |
10808 | return abbrev; | |
10809 | else | |
10810 | abbrev = abbrev->next; | |
10811 | } | |
10812 | return NULL; | |
10813 | } | |
10814 | ||
72bf9492 DJ |
10815 | /* Returns nonzero if TAG represents a type that we might generate a partial |
10816 | symbol for. */ | |
10817 | ||
10818 | static int | |
10819 | is_type_tag_for_partial (int tag) | |
10820 | { | |
10821 | switch (tag) | |
10822 | { | |
10823 | #if 0 | |
10824 | /* Some types that would be reasonable to generate partial symbols for, | |
10825 | that we don't at present. */ | |
10826 | case DW_TAG_array_type: | |
10827 | case DW_TAG_file_type: | |
10828 | case DW_TAG_ptr_to_member_type: | |
10829 | case DW_TAG_set_type: | |
10830 | case DW_TAG_string_type: | |
10831 | case DW_TAG_subroutine_type: | |
10832 | #endif | |
10833 | case DW_TAG_base_type: | |
10834 | case DW_TAG_class_type: | |
680b30c7 | 10835 | case DW_TAG_interface_type: |
72bf9492 DJ |
10836 | case DW_TAG_enumeration_type: |
10837 | case DW_TAG_structure_type: | |
10838 | case DW_TAG_subrange_type: | |
10839 | case DW_TAG_typedef: | |
10840 | case DW_TAG_union_type: | |
10841 | return 1; | |
10842 | default: | |
10843 | return 0; | |
10844 | } | |
10845 | } | |
10846 | ||
10847 | /* Load all DIEs that are interesting for partial symbols into memory. */ | |
10848 | ||
10849 | static struct partial_die_info * | |
dee91e82 DE |
10850 | load_partial_dies (const struct die_reader_specs *reader, |
10851 | gdb_byte *info_ptr, int building_psymtab) | |
72bf9492 | 10852 | { |
dee91e82 | 10853 | struct dwarf2_cu *cu = reader->cu; |
bb5ed363 | 10854 | struct objfile *objfile = cu->objfile; |
72bf9492 DJ |
10855 | struct partial_die_info *part_die; |
10856 | struct partial_die_info *parent_die, *last_die, *first_die = NULL; | |
10857 | struct abbrev_info *abbrev; | |
10858 | unsigned int bytes_read; | |
5afb4e99 | 10859 | unsigned int load_all = 0; |
72bf9492 DJ |
10860 | int nesting_level = 1; |
10861 | ||
10862 | parent_die = NULL; | |
10863 | last_die = NULL; | |
10864 | ||
7adf1e79 DE |
10865 | gdb_assert (cu->per_cu != NULL); |
10866 | if (cu->per_cu->load_all_dies) | |
5afb4e99 DJ |
10867 | load_all = 1; |
10868 | ||
72bf9492 DJ |
10869 | cu->partial_dies |
10870 | = htab_create_alloc_ex (cu->header.length / 12, | |
10871 | partial_die_hash, | |
10872 | partial_die_eq, | |
10873 | NULL, | |
10874 | &cu->comp_unit_obstack, | |
10875 | hashtab_obstack_allocate, | |
10876 | dummy_obstack_deallocate); | |
10877 | ||
10878 | part_die = obstack_alloc (&cu->comp_unit_obstack, | |
10879 | sizeof (struct partial_die_info)); | |
10880 | ||
10881 | while (1) | |
10882 | { | |
10883 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, cu); | |
10884 | ||
10885 | /* A NULL abbrev means the end of a series of children. */ | |
10886 | if (abbrev == NULL) | |
10887 | { | |
10888 | if (--nesting_level == 0) | |
10889 | { | |
10890 | /* PART_DIE was probably the last thing allocated on the | |
10891 | comp_unit_obstack, so we could call obstack_free | |
10892 | here. We don't do that because the waste is small, | |
10893 | and will be cleaned up when we're done with this | |
10894 | compilation unit. This way, we're also more robust | |
10895 | against other users of the comp_unit_obstack. */ | |
10896 | return first_die; | |
10897 | } | |
10898 | info_ptr += bytes_read; | |
10899 | last_die = parent_die; | |
10900 | parent_die = parent_die->die_parent; | |
10901 | continue; | |
10902 | } | |
10903 | ||
98bfdba5 PA |
10904 | /* Check for template arguments. We never save these; if |
10905 | they're seen, we just mark the parent, and go on our way. */ | |
10906 | if (parent_die != NULL | |
10907 | && cu->language == language_cplus | |
10908 | && (abbrev->tag == DW_TAG_template_type_param | |
10909 | || abbrev->tag == DW_TAG_template_value_param)) | |
10910 | { | |
10911 | parent_die->has_template_arguments = 1; | |
10912 | ||
10913 | if (!load_all) | |
10914 | { | |
10915 | /* We don't need a partial DIE for the template argument. */ | |
dee91e82 | 10916 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
10917 | continue; |
10918 | } | |
10919 | } | |
10920 | ||
0d99eb77 | 10921 | /* We only recurse into c++ subprograms looking for template arguments. |
98bfdba5 PA |
10922 | Skip their other children. */ |
10923 | if (!load_all | |
10924 | && cu->language == language_cplus | |
10925 | && parent_die != NULL | |
10926 | && parent_die->tag == DW_TAG_subprogram) | |
10927 | { | |
dee91e82 | 10928 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
10929 | continue; |
10930 | } | |
10931 | ||
5afb4e99 DJ |
10932 | /* Check whether this DIE is interesting enough to save. Normally |
10933 | we would not be interested in members here, but there may be | |
10934 | later variables referencing them via DW_AT_specification (for | |
10935 | static members). */ | |
10936 | if (!load_all | |
10937 | && !is_type_tag_for_partial (abbrev->tag) | |
72929c62 | 10938 | && abbrev->tag != DW_TAG_constant |
72bf9492 DJ |
10939 | && abbrev->tag != DW_TAG_enumerator |
10940 | && abbrev->tag != DW_TAG_subprogram | |
bc30ff58 | 10941 | && abbrev->tag != DW_TAG_lexical_block |
72bf9492 | 10942 | && abbrev->tag != DW_TAG_variable |
5afb4e99 | 10943 | && abbrev->tag != DW_TAG_namespace |
f55ee35c | 10944 | && abbrev->tag != DW_TAG_module |
95554aad TT |
10945 | && abbrev->tag != DW_TAG_member |
10946 | && abbrev->tag != DW_TAG_imported_unit) | |
72bf9492 DJ |
10947 | { |
10948 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 10949 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
72bf9492 DJ |
10950 | continue; |
10951 | } | |
10952 | ||
dee91e82 DE |
10953 | info_ptr = read_partial_die (reader, part_die, abbrev, bytes_read, |
10954 | info_ptr); | |
72bf9492 DJ |
10955 | |
10956 | /* This two-pass algorithm for processing partial symbols has a | |
10957 | high cost in cache pressure. Thus, handle some simple cases | |
10958 | here which cover the majority of C partial symbols. DIEs | |
10959 | which neither have specification tags in them, nor could have | |
10960 | specification tags elsewhere pointing at them, can simply be | |
10961 | processed and discarded. | |
10962 | ||
10963 | This segment is also optional; scan_partial_symbols and | |
10964 | add_partial_symbol will handle these DIEs if we chain | |
10965 | them in normally. When compilers which do not emit large | |
10966 | quantities of duplicate debug information are more common, | |
10967 | this code can probably be removed. */ | |
10968 | ||
10969 | /* Any complete simple types at the top level (pretty much all | |
10970 | of them, for a language without namespaces), can be processed | |
10971 | directly. */ | |
10972 | if (parent_die == NULL | |
10973 | && part_die->has_specification == 0 | |
10974 | && part_die->is_declaration == 0 | |
d8228535 | 10975 | && ((part_die->tag == DW_TAG_typedef && !part_die->has_children) |
72bf9492 DJ |
10976 | || part_die->tag == DW_TAG_base_type |
10977 | || part_die->tag == DW_TAG_subrange_type)) | |
10978 | { | |
10979 | if (building_psymtab && part_die->name != NULL) | |
04a679b8 | 10980 | add_psymbol_to_list (part_die->name, strlen (part_die->name), 0, |
72bf9492 | 10981 | VAR_DOMAIN, LOC_TYPEDEF, |
bb5ed363 DE |
10982 | &objfile->static_psymbols, |
10983 | 0, (CORE_ADDR) 0, cu->language, objfile); | |
dee91e82 | 10984 | info_ptr = locate_pdi_sibling (reader, part_die, info_ptr); |
72bf9492 DJ |
10985 | continue; |
10986 | } | |
10987 | ||
d8228535 JK |
10988 | /* The exception for DW_TAG_typedef with has_children above is |
10989 | a workaround of GCC PR debug/47510. In the case of this complaint | |
10990 | type_name_no_tag_or_error will error on such types later. | |
10991 | ||
10992 | GDB skipped children of DW_TAG_typedef by the shortcut above and then | |
10993 | it could not find the child DIEs referenced later, this is checked | |
10994 | above. In correct DWARF DW_TAG_typedef should have no children. */ | |
10995 | ||
10996 | if (part_die->tag == DW_TAG_typedef && part_die->has_children) | |
10997 | complaint (&symfile_complaints, | |
10998 | _("DW_TAG_typedef has childen - GCC PR debug/47510 bug " | |
10999 | "- DIE at 0x%x [in module %s]"), | |
b64f50a1 | 11000 | part_die->offset.sect_off, objfile->name); |
d8228535 | 11001 | |
72bf9492 DJ |
11002 | /* If we're at the second level, and we're an enumerator, and |
11003 | our parent has no specification (meaning possibly lives in a | |
11004 | namespace elsewhere), then we can add the partial symbol now | |
11005 | instead of queueing it. */ | |
11006 | if (part_die->tag == DW_TAG_enumerator | |
11007 | && parent_die != NULL | |
11008 | && parent_die->die_parent == NULL | |
11009 | && parent_die->tag == DW_TAG_enumeration_type | |
11010 | && parent_die->has_specification == 0) | |
11011 | { | |
11012 | if (part_die->name == NULL) | |
3e43a32a MS |
11013 | complaint (&symfile_complaints, |
11014 | _("malformed enumerator DIE ignored")); | |
72bf9492 | 11015 | else if (building_psymtab) |
04a679b8 | 11016 | add_psymbol_to_list (part_die->name, strlen (part_die->name), 0, |
72bf9492 | 11017 | VAR_DOMAIN, LOC_CONST, |
987504bb JJ |
11018 | (cu->language == language_cplus |
11019 | || cu->language == language_java) | |
bb5ed363 DE |
11020 | ? &objfile->global_psymbols |
11021 | : &objfile->static_psymbols, | |
11022 | 0, (CORE_ADDR) 0, cu->language, objfile); | |
72bf9492 | 11023 | |
dee91e82 | 11024 | info_ptr = locate_pdi_sibling (reader, part_die, info_ptr); |
72bf9492 DJ |
11025 | continue; |
11026 | } | |
11027 | ||
11028 | /* We'll save this DIE so link it in. */ | |
11029 | part_die->die_parent = parent_die; | |
11030 | part_die->die_sibling = NULL; | |
11031 | part_die->die_child = NULL; | |
11032 | ||
11033 | if (last_die && last_die == parent_die) | |
11034 | last_die->die_child = part_die; | |
11035 | else if (last_die) | |
11036 | last_die->die_sibling = part_die; | |
11037 | ||
11038 | last_die = part_die; | |
11039 | ||
11040 | if (first_die == NULL) | |
11041 | first_die = part_die; | |
11042 | ||
11043 | /* Maybe add the DIE to the hash table. Not all DIEs that we | |
11044 | find interesting need to be in the hash table, because we | |
11045 | also have the parent/sibling/child chains; only those that we | |
11046 | might refer to by offset later during partial symbol reading. | |
11047 | ||
11048 | For now this means things that might have be the target of a | |
11049 | DW_AT_specification, DW_AT_abstract_origin, or | |
11050 | DW_AT_extension. DW_AT_extension will refer only to | |
11051 | namespaces; DW_AT_abstract_origin refers to functions (and | |
11052 | many things under the function DIE, but we do not recurse | |
11053 | into function DIEs during partial symbol reading) and | |
11054 | possibly variables as well; DW_AT_specification refers to | |
11055 | declarations. Declarations ought to have the DW_AT_declaration | |
11056 | flag. It happens that GCC forgets to put it in sometimes, but | |
11057 | only for functions, not for types. | |
11058 | ||
11059 | Adding more things than necessary to the hash table is harmless | |
11060 | except for the performance cost. Adding too few will result in | |
5afb4e99 DJ |
11061 | wasted time in find_partial_die, when we reread the compilation |
11062 | unit with load_all_dies set. */ | |
72bf9492 | 11063 | |
5afb4e99 | 11064 | if (load_all |
72929c62 | 11065 | || abbrev->tag == DW_TAG_constant |
5afb4e99 | 11066 | || abbrev->tag == DW_TAG_subprogram |
72bf9492 DJ |
11067 | || abbrev->tag == DW_TAG_variable |
11068 | || abbrev->tag == DW_TAG_namespace | |
11069 | || part_die->is_declaration) | |
11070 | { | |
11071 | void **slot; | |
11072 | ||
11073 | slot = htab_find_slot_with_hash (cu->partial_dies, part_die, | |
b64f50a1 | 11074 | part_die->offset.sect_off, INSERT); |
72bf9492 DJ |
11075 | *slot = part_die; |
11076 | } | |
11077 | ||
11078 | part_die = obstack_alloc (&cu->comp_unit_obstack, | |
11079 | sizeof (struct partial_die_info)); | |
11080 | ||
11081 | /* For some DIEs we want to follow their children (if any). For C | |
bc30ff58 | 11082 | we have no reason to follow the children of structures; for other |
98bfdba5 PA |
11083 | languages we have to, so that we can get at method physnames |
11084 | to infer fully qualified class names, for DW_AT_specification, | |
11085 | and for C++ template arguments. For C++, we also look one level | |
11086 | inside functions to find template arguments (if the name of the | |
11087 | function does not already contain the template arguments). | |
bc30ff58 JB |
11088 | |
11089 | For Ada, we need to scan the children of subprograms and lexical | |
11090 | blocks as well because Ada allows the definition of nested | |
11091 | entities that could be interesting for the debugger, such as | |
11092 | nested subprograms for instance. */ | |
72bf9492 | 11093 | if (last_die->has_children |
5afb4e99 DJ |
11094 | && (load_all |
11095 | || last_die->tag == DW_TAG_namespace | |
f55ee35c | 11096 | || last_die->tag == DW_TAG_module |
72bf9492 | 11097 | || last_die->tag == DW_TAG_enumeration_type |
98bfdba5 PA |
11098 | || (cu->language == language_cplus |
11099 | && last_die->tag == DW_TAG_subprogram | |
11100 | && (last_die->name == NULL | |
11101 | || strchr (last_die->name, '<') == NULL)) | |
72bf9492 DJ |
11102 | || (cu->language != language_c |
11103 | && (last_die->tag == DW_TAG_class_type | |
680b30c7 | 11104 | || last_die->tag == DW_TAG_interface_type |
72bf9492 | 11105 | || last_die->tag == DW_TAG_structure_type |
bc30ff58 JB |
11106 | || last_die->tag == DW_TAG_union_type)) |
11107 | || (cu->language == language_ada | |
11108 | && (last_die->tag == DW_TAG_subprogram | |
11109 | || last_die->tag == DW_TAG_lexical_block)))) | |
72bf9492 DJ |
11110 | { |
11111 | nesting_level++; | |
11112 | parent_die = last_die; | |
11113 | continue; | |
11114 | } | |
11115 | ||
11116 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 11117 | info_ptr = locate_pdi_sibling (reader, last_die, info_ptr); |
72bf9492 DJ |
11118 | |
11119 | /* Back to the top, do it again. */ | |
11120 | } | |
11121 | } | |
11122 | ||
c906108c SS |
11123 | /* Read a minimal amount of information into the minimal die structure. */ |
11124 | ||
fe1b8b76 | 11125 | static gdb_byte * |
dee91e82 DE |
11126 | read_partial_die (const struct die_reader_specs *reader, |
11127 | struct partial_die_info *part_die, | |
11128 | struct abbrev_info *abbrev, unsigned int abbrev_len, | |
11129 | gdb_byte *info_ptr) | |
c906108c | 11130 | { |
dee91e82 | 11131 | struct dwarf2_cu *cu = reader->cu; |
bb5ed363 | 11132 | struct objfile *objfile = cu->objfile; |
dee91e82 | 11133 | gdb_byte *buffer = reader->buffer; |
fa238c03 | 11134 | unsigned int i; |
c906108c | 11135 | struct attribute attr; |
c5aa993b | 11136 | int has_low_pc_attr = 0; |
c906108c | 11137 | int has_high_pc_attr = 0; |
91da1414 | 11138 | int high_pc_relative = 0; |
c906108c | 11139 | |
72bf9492 | 11140 | memset (part_die, 0, sizeof (struct partial_die_info)); |
c906108c | 11141 | |
b64f50a1 | 11142 | part_die->offset.sect_off = info_ptr - buffer; |
72bf9492 DJ |
11143 | |
11144 | info_ptr += abbrev_len; | |
11145 | ||
11146 | if (abbrev == NULL) | |
11147 | return info_ptr; | |
11148 | ||
c906108c SS |
11149 | part_die->tag = abbrev->tag; |
11150 | part_die->has_children = abbrev->has_children; | |
c906108c SS |
11151 | |
11152 | for (i = 0; i < abbrev->num_attrs; ++i) | |
11153 | { | |
dee91e82 | 11154 | info_ptr = read_attribute (reader, &attr, &abbrev->attrs[i], info_ptr); |
c906108c SS |
11155 | |
11156 | /* Store the data if it is of an attribute we want to keep in a | |
c5aa993b | 11157 | partial symbol table. */ |
c906108c SS |
11158 | switch (attr.name) |
11159 | { | |
11160 | case DW_AT_name: | |
71c25dea TT |
11161 | switch (part_die->tag) |
11162 | { | |
11163 | case DW_TAG_compile_unit: | |
95554aad | 11164 | case DW_TAG_partial_unit: |
348e048f | 11165 | case DW_TAG_type_unit: |
71c25dea TT |
11166 | /* Compilation units have a DW_AT_name that is a filename, not |
11167 | a source language identifier. */ | |
11168 | case DW_TAG_enumeration_type: | |
11169 | case DW_TAG_enumerator: | |
11170 | /* These tags always have simple identifiers already; no need | |
11171 | to canonicalize them. */ | |
11172 | part_die->name = DW_STRING (&attr); | |
11173 | break; | |
11174 | default: | |
11175 | part_die->name | |
11176 | = dwarf2_canonicalize_name (DW_STRING (&attr), cu, | |
bb5ed363 | 11177 | &objfile->objfile_obstack); |
71c25dea TT |
11178 | break; |
11179 | } | |
c906108c | 11180 | break; |
31ef98ae | 11181 | case DW_AT_linkage_name: |
c906108c | 11182 | case DW_AT_MIPS_linkage_name: |
31ef98ae TT |
11183 | /* Note that both forms of linkage name might appear. We |
11184 | assume they will be the same, and we only store the last | |
11185 | one we see. */ | |
94af9270 KS |
11186 | if (cu->language == language_ada) |
11187 | part_die->name = DW_STRING (&attr); | |
abc72ce4 | 11188 | part_die->linkage_name = DW_STRING (&attr); |
c906108c SS |
11189 | break; |
11190 | case DW_AT_low_pc: | |
11191 | has_low_pc_attr = 1; | |
11192 | part_die->lowpc = DW_ADDR (&attr); | |
11193 | break; | |
11194 | case DW_AT_high_pc: | |
11195 | has_high_pc_attr = 1; | |
3019eac3 DE |
11196 | if (attr.form == DW_FORM_addr |
11197 | || attr.form == DW_FORM_GNU_addr_index) | |
91da1414 MW |
11198 | part_die->highpc = DW_ADDR (&attr); |
11199 | else | |
11200 | { | |
11201 | high_pc_relative = 1; | |
11202 | part_die->highpc = DW_UNSND (&attr); | |
11203 | } | |
c906108c SS |
11204 | break; |
11205 | case DW_AT_location: | |
0963b4bd | 11206 | /* Support the .debug_loc offsets. */ |
8e19ed76 PS |
11207 | if (attr_form_is_block (&attr)) |
11208 | { | |
95554aad | 11209 | part_die->d.locdesc = DW_BLOCK (&attr); |
8e19ed76 | 11210 | } |
3690dd37 | 11211 | else if (attr_form_is_section_offset (&attr)) |
8e19ed76 | 11212 | { |
4d3c2250 | 11213 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
11214 | } |
11215 | else | |
11216 | { | |
4d3c2250 KB |
11217 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
11218 | "partial symbol information"); | |
8e19ed76 | 11219 | } |
c906108c | 11220 | break; |
c906108c SS |
11221 | case DW_AT_external: |
11222 | part_die->is_external = DW_UNSND (&attr); | |
11223 | break; | |
11224 | case DW_AT_declaration: | |
11225 | part_die->is_declaration = DW_UNSND (&attr); | |
11226 | break; | |
11227 | case DW_AT_type: | |
11228 | part_die->has_type = 1; | |
11229 | break; | |
11230 | case DW_AT_abstract_origin: | |
11231 | case DW_AT_specification: | |
72bf9492 DJ |
11232 | case DW_AT_extension: |
11233 | part_die->has_specification = 1; | |
c764a876 | 11234 | part_die->spec_offset = dwarf2_get_ref_die_offset (&attr); |
c906108c SS |
11235 | break; |
11236 | case DW_AT_sibling: | |
11237 | /* Ignore absolute siblings, they might point outside of | |
11238 | the current compile unit. */ | |
11239 | if (attr.form == DW_FORM_ref_addr) | |
3e43a32a MS |
11240 | complaint (&symfile_complaints, |
11241 | _("ignoring absolute DW_AT_sibling")); | |
c906108c | 11242 | else |
b64f50a1 | 11243 | part_die->sibling = buffer + dwarf2_get_ref_die_offset (&attr).sect_off; |
c906108c | 11244 | break; |
fa4028e9 JB |
11245 | case DW_AT_byte_size: |
11246 | part_die->has_byte_size = 1; | |
11247 | break; | |
68511cec CES |
11248 | case DW_AT_calling_convention: |
11249 | /* DWARF doesn't provide a way to identify a program's source-level | |
11250 | entry point. DW_AT_calling_convention attributes are only meant | |
11251 | to describe functions' calling conventions. | |
11252 | ||
11253 | However, because it's a necessary piece of information in | |
11254 | Fortran, and because DW_CC_program is the only piece of debugging | |
11255 | information whose definition refers to a 'main program' at all, | |
11256 | several compilers have begun marking Fortran main programs with | |
11257 | DW_CC_program --- even when those functions use the standard | |
11258 | calling conventions. | |
11259 | ||
11260 | So until DWARF specifies a way to provide this information and | |
11261 | compilers pick up the new representation, we'll support this | |
11262 | practice. */ | |
11263 | if (DW_UNSND (&attr) == DW_CC_program | |
11264 | && cu->language == language_fortran) | |
01f8c46d JK |
11265 | { |
11266 | set_main_name (part_die->name); | |
11267 | ||
11268 | /* As this DIE has a static linkage the name would be difficult | |
11269 | to look up later. */ | |
11270 | language_of_main = language_fortran; | |
11271 | } | |
68511cec | 11272 | break; |
481860b3 GB |
11273 | case DW_AT_inline: |
11274 | if (DW_UNSND (&attr) == DW_INL_inlined | |
11275 | || DW_UNSND (&attr) == DW_INL_declared_inlined) | |
11276 | part_die->may_be_inlined = 1; | |
11277 | break; | |
95554aad TT |
11278 | |
11279 | case DW_AT_import: | |
11280 | if (part_die->tag == DW_TAG_imported_unit) | |
11281 | part_die->d.offset = dwarf2_get_ref_die_offset (&attr); | |
11282 | break; | |
11283 | ||
c906108c SS |
11284 | default: |
11285 | break; | |
11286 | } | |
11287 | } | |
11288 | ||
91da1414 MW |
11289 | if (high_pc_relative) |
11290 | part_die->highpc += part_die->lowpc; | |
11291 | ||
9373cf26 JK |
11292 | if (has_low_pc_attr && has_high_pc_attr) |
11293 | { | |
11294 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
11295 | eliminate duplicate copies of functions and vtables and such. | |
11296 | The linker will arbitrarily choose one and discard the others. | |
11297 | The AT_*_pc values for such functions refer to local labels in | |
11298 | these sections. If the section from that file was discarded, the | |
11299 | labels are not in the output, so the relocs get a value of 0. | |
11300 | If this is a discarded function, mark the pc bounds as invalid, | |
11301 | so that GDB will ignore it. */ | |
11302 | if (part_die->lowpc == 0 && !dwarf2_per_objfile->has_section_at_zero) | |
11303 | { | |
bb5ed363 | 11304 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9373cf26 JK |
11305 | |
11306 | complaint (&symfile_complaints, | |
11307 | _("DW_AT_low_pc %s is zero " | |
11308 | "for DIE at 0x%x [in module %s]"), | |
11309 | paddress (gdbarch, part_die->lowpc), | |
b64f50a1 | 11310 | part_die->offset.sect_off, objfile->name); |
9373cf26 JK |
11311 | } |
11312 | /* dwarf2_get_pc_bounds has also the strict low < high requirement. */ | |
11313 | else if (part_die->lowpc >= part_die->highpc) | |
11314 | { | |
bb5ed363 | 11315 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9373cf26 JK |
11316 | |
11317 | complaint (&symfile_complaints, | |
11318 | _("DW_AT_low_pc %s is not < DW_AT_high_pc %s " | |
11319 | "for DIE at 0x%x [in module %s]"), | |
11320 | paddress (gdbarch, part_die->lowpc), | |
11321 | paddress (gdbarch, part_die->highpc), | |
b64f50a1 | 11322 | part_die->offset.sect_off, objfile->name); |
9373cf26 JK |
11323 | } |
11324 | else | |
11325 | part_die->has_pc_info = 1; | |
11326 | } | |
85cbf3d3 | 11327 | |
c906108c SS |
11328 | return info_ptr; |
11329 | } | |
11330 | ||
72bf9492 DJ |
11331 | /* Find a cached partial DIE at OFFSET in CU. */ |
11332 | ||
11333 | static struct partial_die_info * | |
b64f50a1 | 11334 | find_partial_die_in_comp_unit (sect_offset offset, struct dwarf2_cu *cu) |
72bf9492 DJ |
11335 | { |
11336 | struct partial_die_info *lookup_die = NULL; | |
11337 | struct partial_die_info part_die; | |
11338 | ||
11339 | part_die.offset = offset; | |
b64f50a1 JK |
11340 | lookup_die = htab_find_with_hash (cu->partial_dies, &part_die, |
11341 | offset.sect_off); | |
72bf9492 | 11342 | |
72bf9492 DJ |
11343 | return lookup_die; |
11344 | } | |
11345 | ||
348e048f DE |
11346 | /* Find a partial DIE at OFFSET, which may or may not be in CU, |
11347 | except in the case of .debug_types DIEs which do not reference | |
11348 | outside their CU (they do however referencing other types via | |
55f1336d | 11349 | DW_FORM_ref_sig8). */ |
72bf9492 DJ |
11350 | |
11351 | static struct partial_die_info * | |
b64f50a1 | 11352 | find_partial_die (sect_offset offset, struct dwarf2_cu *cu) |
72bf9492 | 11353 | { |
bb5ed363 | 11354 | struct objfile *objfile = cu->objfile; |
5afb4e99 DJ |
11355 | struct dwarf2_per_cu_data *per_cu = NULL; |
11356 | struct partial_die_info *pd = NULL; | |
72bf9492 | 11357 | |
45452591 | 11358 | if (offset_in_cu_p (&cu->header, offset)) |
5afb4e99 DJ |
11359 | { |
11360 | pd = find_partial_die_in_comp_unit (offset, cu); | |
11361 | if (pd != NULL) | |
11362 | return pd; | |
0d99eb77 DE |
11363 | /* We missed recording what we needed. |
11364 | Load all dies and try again. */ | |
11365 | per_cu = cu->per_cu; | |
5afb4e99 | 11366 | } |
0d99eb77 DE |
11367 | else |
11368 | { | |
11369 | /* TUs don't reference other CUs/TUs (except via type signatures). */ | |
3019eac3 | 11370 | if (cu->per_cu->is_debug_types) |
0d99eb77 DE |
11371 | { |
11372 | error (_("Dwarf Error: Type Unit at offset 0x%lx contains" | |
11373 | " external reference to offset 0x%lx [in module %s].\n"), | |
11374 | (long) cu->header.offset.sect_off, (long) offset.sect_off, | |
11375 | bfd_get_filename (objfile->obfd)); | |
11376 | } | |
11377 | per_cu = dwarf2_find_containing_comp_unit (offset, objfile); | |
72bf9492 | 11378 | |
0d99eb77 DE |
11379 | if (per_cu->cu == NULL || per_cu->cu->partial_dies == NULL) |
11380 | load_partial_comp_unit (per_cu); | |
ae038cb0 | 11381 | |
0d99eb77 DE |
11382 | per_cu->cu->last_used = 0; |
11383 | pd = find_partial_die_in_comp_unit (offset, per_cu->cu); | |
11384 | } | |
5afb4e99 | 11385 | |
dee91e82 DE |
11386 | /* If we didn't find it, and not all dies have been loaded, |
11387 | load them all and try again. */ | |
11388 | ||
5afb4e99 DJ |
11389 | if (pd == NULL && per_cu->load_all_dies == 0) |
11390 | { | |
5afb4e99 | 11391 | per_cu->load_all_dies = 1; |
fd820528 DE |
11392 | |
11393 | /* This is nasty. When we reread the DIEs, somewhere up the call chain | |
11394 | THIS_CU->cu may already be in use. So we can't just free it and | |
11395 | replace its DIEs with the ones we read in. Instead, we leave those | |
11396 | DIEs alone (which can still be in use, e.g. in scan_partial_symbols), | |
11397 | and clobber THIS_CU->cu->partial_dies with the hash table for the new | |
11398 | set. */ | |
dee91e82 | 11399 | load_partial_comp_unit (per_cu); |
5afb4e99 DJ |
11400 | |
11401 | pd = find_partial_die_in_comp_unit (offset, per_cu->cu); | |
11402 | } | |
11403 | ||
11404 | if (pd == NULL) | |
11405 | internal_error (__FILE__, __LINE__, | |
3e43a32a MS |
11406 | _("could not find partial DIE 0x%x " |
11407 | "in cache [from module %s]\n"), | |
b64f50a1 | 11408 | offset.sect_off, bfd_get_filename (objfile->obfd)); |
5afb4e99 | 11409 | return pd; |
72bf9492 DJ |
11410 | } |
11411 | ||
abc72ce4 DE |
11412 | /* See if we can figure out if the class lives in a namespace. We do |
11413 | this by looking for a member function; its demangled name will | |
11414 | contain namespace info, if there is any. */ | |
11415 | ||
11416 | static void | |
11417 | guess_partial_die_structure_name (struct partial_die_info *struct_pdi, | |
11418 | struct dwarf2_cu *cu) | |
11419 | { | |
11420 | /* NOTE: carlton/2003-10-07: Getting the info this way changes | |
11421 | what template types look like, because the demangler | |
11422 | frequently doesn't give the same name as the debug info. We | |
11423 | could fix this by only using the demangled name to get the | |
11424 | prefix (but see comment in read_structure_type). */ | |
11425 | ||
11426 | struct partial_die_info *real_pdi; | |
11427 | struct partial_die_info *child_pdi; | |
11428 | ||
11429 | /* If this DIE (this DIE's specification, if any) has a parent, then | |
11430 | we should not do this. We'll prepend the parent's fully qualified | |
11431 | name when we create the partial symbol. */ | |
11432 | ||
11433 | real_pdi = struct_pdi; | |
11434 | while (real_pdi->has_specification) | |
11435 | real_pdi = find_partial_die (real_pdi->spec_offset, cu); | |
11436 | ||
11437 | if (real_pdi->die_parent != NULL) | |
11438 | return; | |
11439 | ||
11440 | for (child_pdi = struct_pdi->die_child; | |
11441 | child_pdi != NULL; | |
11442 | child_pdi = child_pdi->die_sibling) | |
11443 | { | |
11444 | if (child_pdi->tag == DW_TAG_subprogram | |
11445 | && child_pdi->linkage_name != NULL) | |
11446 | { | |
11447 | char *actual_class_name | |
11448 | = language_class_name_from_physname (cu->language_defn, | |
11449 | child_pdi->linkage_name); | |
11450 | if (actual_class_name != NULL) | |
11451 | { | |
11452 | struct_pdi->name | |
11453 | = obsavestring (actual_class_name, | |
11454 | strlen (actual_class_name), | |
11455 | &cu->objfile->objfile_obstack); | |
11456 | xfree (actual_class_name); | |
11457 | } | |
11458 | break; | |
11459 | } | |
11460 | } | |
11461 | } | |
11462 | ||
72bf9492 DJ |
11463 | /* Adjust PART_DIE before generating a symbol for it. This function |
11464 | may set the is_external flag or change the DIE's name. */ | |
11465 | ||
11466 | static void | |
11467 | fixup_partial_die (struct partial_die_info *part_die, | |
11468 | struct dwarf2_cu *cu) | |
11469 | { | |
abc72ce4 DE |
11470 | /* Once we've fixed up a die, there's no point in doing so again. |
11471 | This also avoids a memory leak if we were to call | |
11472 | guess_partial_die_structure_name multiple times. */ | |
11473 | if (part_die->fixup_called) | |
11474 | return; | |
11475 | ||
72bf9492 DJ |
11476 | /* If we found a reference attribute and the DIE has no name, try |
11477 | to find a name in the referred to DIE. */ | |
11478 | ||
11479 | if (part_die->name == NULL && part_die->has_specification) | |
11480 | { | |
11481 | struct partial_die_info *spec_die; | |
72bf9492 | 11482 | |
10b3939b | 11483 | spec_die = find_partial_die (part_die->spec_offset, cu); |
72bf9492 | 11484 | |
10b3939b | 11485 | fixup_partial_die (spec_die, cu); |
72bf9492 DJ |
11486 | |
11487 | if (spec_die->name) | |
11488 | { | |
11489 | part_die->name = spec_die->name; | |
11490 | ||
11491 | /* Copy DW_AT_external attribute if it is set. */ | |
11492 | if (spec_die->is_external) | |
11493 | part_die->is_external = spec_die->is_external; | |
11494 | } | |
11495 | } | |
11496 | ||
11497 | /* Set default names for some unnamed DIEs. */ | |
72bf9492 DJ |
11498 | |
11499 | if (part_die->name == NULL && part_die->tag == DW_TAG_namespace) | |
2b1dbab0 | 11500 | part_die->name = CP_ANONYMOUS_NAMESPACE_STR; |
72bf9492 | 11501 | |
abc72ce4 DE |
11502 | /* If there is no parent die to provide a namespace, and there are |
11503 | children, see if we can determine the namespace from their linkage | |
122d1940 | 11504 | name. */ |
abc72ce4 | 11505 | if (cu->language == language_cplus |
8b70b953 | 11506 | && !VEC_empty (dwarf2_section_info_def, dwarf2_per_objfile->types) |
abc72ce4 DE |
11507 | && part_die->die_parent == NULL |
11508 | && part_die->has_children | |
11509 | && (part_die->tag == DW_TAG_class_type | |
11510 | || part_die->tag == DW_TAG_structure_type | |
11511 | || part_die->tag == DW_TAG_union_type)) | |
11512 | guess_partial_die_structure_name (part_die, cu); | |
11513 | ||
53832f31 TT |
11514 | /* GCC might emit a nameless struct or union that has a linkage |
11515 | name. See http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
11516 | if (part_die->name == NULL | |
96408a79 SA |
11517 | && (part_die->tag == DW_TAG_class_type |
11518 | || part_die->tag == DW_TAG_interface_type | |
11519 | || part_die->tag == DW_TAG_structure_type | |
11520 | || part_die->tag == DW_TAG_union_type) | |
53832f31 TT |
11521 | && part_die->linkage_name != NULL) |
11522 | { | |
11523 | char *demangled; | |
11524 | ||
11525 | demangled = cplus_demangle (part_die->linkage_name, DMGL_TYPES); | |
11526 | if (demangled) | |
11527 | { | |
96408a79 SA |
11528 | const char *base; |
11529 | ||
11530 | /* Strip any leading namespaces/classes, keep only the base name. | |
11531 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
11532 | base = strrchr (demangled, ':'); | |
11533 | if (base && base > demangled && base[-1] == ':') | |
11534 | base++; | |
11535 | else | |
11536 | base = demangled; | |
11537 | ||
11538 | part_die->name = obsavestring (base, strlen (base), | |
53832f31 TT |
11539 | &cu->objfile->objfile_obstack); |
11540 | xfree (demangled); | |
11541 | } | |
11542 | } | |
11543 | ||
abc72ce4 | 11544 | part_die->fixup_called = 1; |
72bf9492 DJ |
11545 | } |
11546 | ||
a8329558 | 11547 | /* Read an attribute value described by an attribute form. */ |
c906108c | 11548 | |
fe1b8b76 | 11549 | static gdb_byte * |
dee91e82 DE |
11550 | read_attribute_value (const struct die_reader_specs *reader, |
11551 | struct attribute *attr, unsigned form, | |
11552 | gdb_byte *info_ptr) | |
c906108c | 11553 | { |
dee91e82 DE |
11554 | struct dwarf2_cu *cu = reader->cu; |
11555 | bfd *abfd = reader->abfd; | |
e7c27a73 | 11556 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
11557 | unsigned int bytes_read; |
11558 | struct dwarf_block *blk; | |
11559 | ||
a8329558 KW |
11560 | attr->form = form; |
11561 | switch (form) | |
c906108c | 11562 | { |
c906108c | 11563 | case DW_FORM_ref_addr: |
ae411497 | 11564 | if (cu->header.version == 2) |
4568ecf9 | 11565 | DW_UNSND (attr) = read_address (abfd, info_ptr, cu, &bytes_read); |
ae411497 | 11566 | else |
4568ecf9 DE |
11567 | DW_UNSND (attr) = read_offset (abfd, info_ptr, |
11568 | &cu->header, &bytes_read); | |
ae411497 TT |
11569 | info_ptr += bytes_read; |
11570 | break; | |
11571 | case DW_FORM_addr: | |
e7c27a73 | 11572 | DW_ADDR (attr) = read_address (abfd, info_ptr, cu, &bytes_read); |
107d2387 | 11573 | info_ptr += bytes_read; |
c906108c SS |
11574 | break; |
11575 | case DW_FORM_block2: | |
7b5a2f43 | 11576 | blk = dwarf_alloc_block (cu); |
c906108c SS |
11577 | blk->size = read_2_bytes (abfd, info_ptr); |
11578 | info_ptr += 2; | |
11579 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
11580 | info_ptr += blk->size; | |
11581 | DW_BLOCK (attr) = blk; | |
11582 | break; | |
11583 | case DW_FORM_block4: | |
7b5a2f43 | 11584 | blk = dwarf_alloc_block (cu); |
c906108c SS |
11585 | blk->size = read_4_bytes (abfd, info_ptr); |
11586 | info_ptr += 4; | |
11587 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
11588 | info_ptr += blk->size; | |
11589 | DW_BLOCK (attr) = blk; | |
11590 | break; | |
11591 | case DW_FORM_data2: | |
11592 | DW_UNSND (attr) = read_2_bytes (abfd, info_ptr); | |
11593 | info_ptr += 2; | |
11594 | break; | |
11595 | case DW_FORM_data4: | |
11596 | DW_UNSND (attr) = read_4_bytes (abfd, info_ptr); | |
11597 | info_ptr += 4; | |
11598 | break; | |
11599 | case DW_FORM_data8: | |
11600 | DW_UNSND (attr) = read_8_bytes (abfd, info_ptr); | |
11601 | info_ptr += 8; | |
11602 | break; | |
2dc7f7b3 TT |
11603 | case DW_FORM_sec_offset: |
11604 | DW_UNSND (attr) = read_offset (abfd, info_ptr, &cu->header, &bytes_read); | |
11605 | info_ptr += bytes_read; | |
11606 | break; | |
c906108c | 11607 | case DW_FORM_string: |
9b1c24c8 | 11608 | DW_STRING (attr) = read_direct_string (abfd, info_ptr, &bytes_read); |
8285870a | 11609 | DW_STRING_IS_CANONICAL (attr) = 0; |
c906108c SS |
11610 | info_ptr += bytes_read; |
11611 | break; | |
4bdf3d34 JJ |
11612 | case DW_FORM_strp: |
11613 | DW_STRING (attr) = read_indirect_string (abfd, info_ptr, cu_header, | |
11614 | &bytes_read); | |
8285870a | 11615 | DW_STRING_IS_CANONICAL (attr) = 0; |
4bdf3d34 JJ |
11616 | info_ptr += bytes_read; |
11617 | break; | |
2dc7f7b3 | 11618 | case DW_FORM_exprloc: |
c906108c | 11619 | case DW_FORM_block: |
7b5a2f43 | 11620 | blk = dwarf_alloc_block (cu); |
c906108c SS |
11621 | blk->size = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
11622 | info_ptr += bytes_read; | |
11623 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
11624 | info_ptr += blk->size; | |
11625 | DW_BLOCK (attr) = blk; | |
11626 | break; | |
11627 | case DW_FORM_block1: | |
7b5a2f43 | 11628 | blk = dwarf_alloc_block (cu); |
c906108c SS |
11629 | blk->size = read_1_byte (abfd, info_ptr); |
11630 | info_ptr += 1; | |
11631 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
11632 | info_ptr += blk->size; | |
11633 | DW_BLOCK (attr) = blk; | |
11634 | break; | |
11635 | case DW_FORM_data1: | |
11636 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
11637 | info_ptr += 1; | |
11638 | break; | |
11639 | case DW_FORM_flag: | |
11640 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
11641 | info_ptr += 1; | |
11642 | break; | |
2dc7f7b3 TT |
11643 | case DW_FORM_flag_present: |
11644 | DW_UNSND (attr) = 1; | |
11645 | break; | |
c906108c SS |
11646 | case DW_FORM_sdata: |
11647 | DW_SND (attr) = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
11648 | info_ptr += bytes_read; | |
11649 | break; | |
11650 | case DW_FORM_udata: | |
11651 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
11652 | info_ptr += bytes_read; | |
11653 | break; | |
11654 | case DW_FORM_ref1: | |
4568ecf9 DE |
11655 | DW_UNSND (attr) = (cu->header.offset.sect_off |
11656 | + read_1_byte (abfd, info_ptr)); | |
c906108c SS |
11657 | info_ptr += 1; |
11658 | break; | |
11659 | case DW_FORM_ref2: | |
4568ecf9 DE |
11660 | DW_UNSND (attr) = (cu->header.offset.sect_off |
11661 | + read_2_bytes (abfd, info_ptr)); | |
c906108c SS |
11662 | info_ptr += 2; |
11663 | break; | |
11664 | case DW_FORM_ref4: | |
4568ecf9 DE |
11665 | DW_UNSND (attr) = (cu->header.offset.sect_off |
11666 | + read_4_bytes (abfd, info_ptr)); | |
c906108c SS |
11667 | info_ptr += 4; |
11668 | break; | |
613e1657 | 11669 | case DW_FORM_ref8: |
4568ecf9 DE |
11670 | DW_UNSND (attr) = (cu->header.offset.sect_off |
11671 | + read_8_bytes (abfd, info_ptr)); | |
613e1657 KB |
11672 | info_ptr += 8; |
11673 | break; | |
55f1336d | 11674 | case DW_FORM_ref_sig8: |
348e048f DE |
11675 | /* Convert the signature to something we can record in DW_UNSND |
11676 | for later lookup. | |
11677 | NOTE: This is NULL if the type wasn't found. */ | |
11678 | DW_SIGNATURED_TYPE (attr) = | |
e319fa28 | 11679 | lookup_signatured_type (read_8_bytes (abfd, info_ptr)); |
348e048f DE |
11680 | info_ptr += 8; |
11681 | break; | |
c906108c | 11682 | case DW_FORM_ref_udata: |
4568ecf9 DE |
11683 | DW_UNSND (attr) = (cu->header.offset.sect_off |
11684 | + read_unsigned_leb128 (abfd, info_ptr, &bytes_read)); | |
c906108c SS |
11685 | info_ptr += bytes_read; |
11686 | break; | |
c906108c | 11687 | case DW_FORM_indirect: |
a8329558 KW |
11688 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
11689 | info_ptr += bytes_read; | |
dee91e82 | 11690 | info_ptr = read_attribute_value (reader, attr, form, info_ptr); |
a8329558 | 11691 | break; |
3019eac3 DE |
11692 | case DW_FORM_GNU_addr_index: |
11693 | if (reader->dwo_file == NULL) | |
11694 | { | |
11695 | /* For now flag a hard error. | |
11696 | Later we can turn this into a complaint. */ | |
11697 | error (_("Dwarf Error: %s found in non-DWO CU [in module %s]"), | |
11698 | dwarf_form_name (form), | |
11699 | bfd_get_filename (abfd)); | |
11700 | } | |
11701 | DW_ADDR (attr) = read_addr_index_from_leb128 (cu, info_ptr, &bytes_read); | |
11702 | info_ptr += bytes_read; | |
11703 | break; | |
11704 | case DW_FORM_GNU_str_index: | |
11705 | if (reader->dwo_file == NULL) | |
11706 | { | |
11707 | /* For now flag a hard error. | |
11708 | Later we can turn this into a complaint if warranted. */ | |
11709 | error (_("Dwarf Error: %s found in non-DWO CU [in module %s]"), | |
11710 | dwarf_form_name (form), | |
11711 | bfd_get_filename (abfd)); | |
11712 | } | |
11713 | { | |
11714 | ULONGEST str_index = | |
11715 | read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
11716 | ||
11717 | DW_STRING (attr) = read_str_index (reader, cu, str_index); | |
11718 | DW_STRING_IS_CANONICAL (attr) = 0; | |
11719 | info_ptr += bytes_read; | |
11720 | } | |
11721 | break; | |
c906108c | 11722 | default: |
8a3fe4f8 | 11723 | error (_("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]"), |
659b0389 ML |
11724 | dwarf_form_name (form), |
11725 | bfd_get_filename (abfd)); | |
c906108c | 11726 | } |
28e94949 JB |
11727 | |
11728 | /* We have seen instances where the compiler tried to emit a byte | |
11729 | size attribute of -1 which ended up being encoded as an unsigned | |
11730 | 0xffffffff. Although 0xffffffff is technically a valid size value, | |
11731 | an object of this size seems pretty unlikely so we can relatively | |
11732 | safely treat these cases as if the size attribute was invalid and | |
11733 | treat them as zero by default. */ | |
11734 | if (attr->name == DW_AT_byte_size | |
11735 | && form == DW_FORM_data4 | |
11736 | && DW_UNSND (attr) >= 0xffffffff) | |
01c66ae6 JB |
11737 | { |
11738 | complaint | |
11739 | (&symfile_complaints, | |
43bbcdc2 PH |
11740 | _("Suspicious DW_AT_byte_size value treated as zero instead of %s"), |
11741 | hex_string (DW_UNSND (attr))); | |
01c66ae6 JB |
11742 | DW_UNSND (attr) = 0; |
11743 | } | |
28e94949 | 11744 | |
c906108c SS |
11745 | return info_ptr; |
11746 | } | |
11747 | ||
a8329558 KW |
11748 | /* Read an attribute described by an abbreviated attribute. */ |
11749 | ||
fe1b8b76 | 11750 | static gdb_byte * |
dee91e82 DE |
11751 | read_attribute (const struct die_reader_specs *reader, |
11752 | struct attribute *attr, struct attr_abbrev *abbrev, | |
11753 | gdb_byte *info_ptr) | |
a8329558 KW |
11754 | { |
11755 | attr->name = abbrev->name; | |
dee91e82 | 11756 | return read_attribute_value (reader, attr, abbrev->form, info_ptr); |
a8329558 KW |
11757 | } |
11758 | ||
0963b4bd | 11759 | /* Read dwarf information from a buffer. */ |
c906108c SS |
11760 | |
11761 | static unsigned int | |
fe1b8b76 | 11762 | read_1_byte (bfd *abfd, gdb_byte *buf) |
c906108c | 11763 | { |
fe1b8b76 | 11764 | return bfd_get_8 (abfd, buf); |
c906108c SS |
11765 | } |
11766 | ||
11767 | static int | |
fe1b8b76 | 11768 | read_1_signed_byte (bfd *abfd, gdb_byte *buf) |
c906108c | 11769 | { |
fe1b8b76 | 11770 | return bfd_get_signed_8 (abfd, buf); |
c906108c SS |
11771 | } |
11772 | ||
11773 | static unsigned int | |
fe1b8b76 | 11774 | read_2_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 11775 | { |
fe1b8b76 | 11776 | return bfd_get_16 (abfd, buf); |
c906108c SS |
11777 | } |
11778 | ||
21ae7a4d JK |
11779 | static int |
11780 | read_2_signed_bytes (bfd *abfd, gdb_byte *buf) | |
11781 | { | |
11782 | return bfd_get_signed_16 (abfd, buf); | |
11783 | } | |
11784 | ||
c906108c | 11785 | static unsigned int |
fe1b8b76 | 11786 | read_4_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 11787 | { |
fe1b8b76 | 11788 | return bfd_get_32 (abfd, buf); |
c906108c SS |
11789 | } |
11790 | ||
21ae7a4d JK |
11791 | static int |
11792 | read_4_signed_bytes (bfd *abfd, gdb_byte *buf) | |
11793 | { | |
11794 | return bfd_get_signed_32 (abfd, buf); | |
11795 | } | |
11796 | ||
93311388 | 11797 | static ULONGEST |
fe1b8b76 | 11798 | read_8_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 11799 | { |
fe1b8b76 | 11800 | return bfd_get_64 (abfd, buf); |
c906108c SS |
11801 | } |
11802 | ||
11803 | static CORE_ADDR | |
fe1b8b76 | 11804 | read_address (bfd *abfd, gdb_byte *buf, struct dwarf2_cu *cu, |
891d2f0b | 11805 | unsigned int *bytes_read) |
c906108c | 11806 | { |
e7c27a73 | 11807 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
11808 | CORE_ADDR retval = 0; |
11809 | ||
107d2387 | 11810 | if (cu_header->signed_addr_p) |
c906108c | 11811 | { |
107d2387 AC |
11812 | switch (cu_header->addr_size) |
11813 | { | |
11814 | case 2: | |
fe1b8b76 | 11815 | retval = bfd_get_signed_16 (abfd, buf); |
107d2387 AC |
11816 | break; |
11817 | case 4: | |
fe1b8b76 | 11818 | retval = bfd_get_signed_32 (abfd, buf); |
107d2387 AC |
11819 | break; |
11820 | case 8: | |
fe1b8b76 | 11821 | retval = bfd_get_signed_64 (abfd, buf); |
107d2387 AC |
11822 | break; |
11823 | default: | |
8e65ff28 | 11824 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 11825 | _("read_address: bad switch, signed [in module %s]"), |
659b0389 | 11826 | bfd_get_filename (abfd)); |
107d2387 AC |
11827 | } |
11828 | } | |
11829 | else | |
11830 | { | |
11831 | switch (cu_header->addr_size) | |
11832 | { | |
11833 | case 2: | |
fe1b8b76 | 11834 | retval = bfd_get_16 (abfd, buf); |
107d2387 AC |
11835 | break; |
11836 | case 4: | |
fe1b8b76 | 11837 | retval = bfd_get_32 (abfd, buf); |
107d2387 AC |
11838 | break; |
11839 | case 8: | |
fe1b8b76 | 11840 | retval = bfd_get_64 (abfd, buf); |
107d2387 AC |
11841 | break; |
11842 | default: | |
8e65ff28 | 11843 | internal_error (__FILE__, __LINE__, |
a73c6dcd MS |
11844 | _("read_address: bad switch, " |
11845 | "unsigned [in module %s]"), | |
659b0389 | 11846 | bfd_get_filename (abfd)); |
107d2387 | 11847 | } |
c906108c | 11848 | } |
64367e0a | 11849 | |
107d2387 AC |
11850 | *bytes_read = cu_header->addr_size; |
11851 | return retval; | |
c906108c SS |
11852 | } |
11853 | ||
f7ef9339 | 11854 | /* Read the initial length from a section. The (draft) DWARF 3 |
613e1657 KB |
11855 | specification allows the initial length to take up either 4 bytes |
11856 | or 12 bytes. If the first 4 bytes are 0xffffffff, then the next 8 | |
11857 | bytes describe the length and all offsets will be 8 bytes in length | |
11858 | instead of 4. | |
11859 | ||
f7ef9339 KB |
11860 | An older, non-standard 64-bit format is also handled by this |
11861 | function. The older format in question stores the initial length | |
11862 | as an 8-byte quantity without an escape value. Lengths greater | |
11863 | than 2^32 aren't very common which means that the initial 4 bytes | |
11864 | is almost always zero. Since a length value of zero doesn't make | |
11865 | sense for the 32-bit format, this initial zero can be considered to | |
11866 | be an escape value which indicates the presence of the older 64-bit | |
11867 | format. As written, the code can't detect (old format) lengths | |
917c78fc MK |
11868 | greater than 4GB. If it becomes necessary to handle lengths |
11869 | somewhat larger than 4GB, we could allow other small values (such | |
11870 | as the non-sensical values of 1, 2, and 3) to also be used as | |
11871 | escape values indicating the presence of the old format. | |
f7ef9339 | 11872 | |
917c78fc MK |
11873 | The value returned via bytes_read should be used to increment the |
11874 | relevant pointer after calling read_initial_length(). | |
c764a876 | 11875 | |
613e1657 KB |
11876 | [ Note: read_initial_length() and read_offset() are based on the |
11877 | document entitled "DWARF Debugging Information Format", revision | |
f7ef9339 | 11878 | 3, draft 8, dated November 19, 2001. This document was obtained |
613e1657 KB |
11879 | from: |
11880 | ||
f7ef9339 | 11881 | http://reality.sgiweb.org/davea/dwarf3-draft8-011125.pdf |
6e70227d | 11882 | |
613e1657 KB |
11883 | This document is only a draft and is subject to change. (So beware.) |
11884 | ||
f7ef9339 | 11885 | Details regarding the older, non-standard 64-bit format were |
917c78fc MK |
11886 | determined empirically by examining 64-bit ELF files produced by |
11887 | the SGI toolchain on an IRIX 6.5 machine. | |
f7ef9339 KB |
11888 | |
11889 | - Kevin, July 16, 2002 | |
613e1657 KB |
11890 | ] */ |
11891 | ||
11892 | static LONGEST | |
c764a876 | 11893 | read_initial_length (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read) |
613e1657 | 11894 | { |
fe1b8b76 | 11895 | LONGEST length = bfd_get_32 (abfd, buf); |
613e1657 | 11896 | |
dd373385 | 11897 | if (length == 0xffffffff) |
613e1657 | 11898 | { |
fe1b8b76 | 11899 | length = bfd_get_64 (abfd, buf + 4); |
613e1657 | 11900 | *bytes_read = 12; |
613e1657 | 11901 | } |
dd373385 | 11902 | else if (length == 0) |
f7ef9339 | 11903 | { |
dd373385 | 11904 | /* Handle the (non-standard) 64-bit DWARF2 format used by IRIX. */ |
fe1b8b76 | 11905 | length = bfd_get_64 (abfd, buf); |
f7ef9339 | 11906 | *bytes_read = 8; |
f7ef9339 | 11907 | } |
613e1657 KB |
11908 | else |
11909 | { | |
11910 | *bytes_read = 4; | |
613e1657 KB |
11911 | } |
11912 | ||
c764a876 DE |
11913 | return length; |
11914 | } | |
dd373385 | 11915 | |
c764a876 DE |
11916 | /* Cover function for read_initial_length. |
11917 | Returns the length of the object at BUF, and stores the size of the | |
11918 | initial length in *BYTES_READ and stores the size that offsets will be in | |
11919 | *OFFSET_SIZE. | |
11920 | If the initial length size is not equivalent to that specified in | |
11921 | CU_HEADER then issue a complaint. | |
11922 | This is useful when reading non-comp-unit headers. */ | |
dd373385 | 11923 | |
c764a876 DE |
11924 | static LONGEST |
11925 | read_checked_initial_length_and_offset (bfd *abfd, gdb_byte *buf, | |
11926 | const struct comp_unit_head *cu_header, | |
11927 | unsigned int *bytes_read, | |
11928 | unsigned int *offset_size) | |
11929 | { | |
11930 | LONGEST length = read_initial_length (abfd, buf, bytes_read); | |
11931 | ||
11932 | gdb_assert (cu_header->initial_length_size == 4 | |
11933 | || cu_header->initial_length_size == 8 | |
11934 | || cu_header->initial_length_size == 12); | |
11935 | ||
11936 | if (cu_header->initial_length_size != *bytes_read) | |
11937 | complaint (&symfile_complaints, | |
11938 | _("intermixed 32-bit and 64-bit DWARF sections")); | |
dd373385 | 11939 | |
c764a876 | 11940 | *offset_size = (*bytes_read == 4) ? 4 : 8; |
dd373385 | 11941 | return length; |
613e1657 KB |
11942 | } |
11943 | ||
11944 | /* Read an offset from the data stream. The size of the offset is | |
917c78fc | 11945 | given by cu_header->offset_size. */ |
613e1657 KB |
11946 | |
11947 | static LONGEST | |
fe1b8b76 | 11948 | read_offset (bfd *abfd, gdb_byte *buf, const struct comp_unit_head *cu_header, |
891d2f0b | 11949 | unsigned int *bytes_read) |
c764a876 DE |
11950 | { |
11951 | LONGEST offset = read_offset_1 (abfd, buf, cu_header->offset_size); | |
9a619af0 | 11952 | |
c764a876 DE |
11953 | *bytes_read = cu_header->offset_size; |
11954 | return offset; | |
11955 | } | |
11956 | ||
11957 | /* Read an offset from the data stream. */ | |
11958 | ||
11959 | static LONGEST | |
11960 | read_offset_1 (bfd *abfd, gdb_byte *buf, unsigned int offset_size) | |
613e1657 KB |
11961 | { |
11962 | LONGEST retval = 0; | |
11963 | ||
c764a876 | 11964 | switch (offset_size) |
613e1657 KB |
11965 | { |
11966 | case 4: | |
fe1b8b76 | 11967 | retval = bfd_get_32 (abfd, buf); |
613e1657 KB |
11968 | break; |
11969 | case 8: | |
fe1b8b76 | 11970 | retval = bfd_get_64 (abfd, buf); |
613e1657 KB |
11971 | break; |
11972 | default: | |
8e65ff28 | 11973 | internal_error (__FILE__, __LINE__, |
c764a876 | 11974 | _("read_offset_1: bad switch [in module %s]"), |
659b0389 | 11975 | bfd_get_filename (abfd)); |
613e1657 KB |
11976 | } |
11977 | ||
917c78fc | 11978 | return retval; |
613e1657 KB |
11979 | } |
11980 | ||
fe1b8b76 JB |
11981 | static gdb_byte * |
11982 | read_n_bytes (bfd *abfd, gdb_byte *buf, unsigned int size) | |
c906108c SS |
11983 | { |
11984 | /* If the size of a host char is 8 bits, we can return a pointer | |
11985 | to the buffer, otherwise we have to copy the data to a buffer | |
11986 | allocated on the temporary obstack. */ | |
4bdf3d34 | 11987 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c | 11988 | return buf; |
c906108c SS |
11989 | } |
11990 | ||
11991 | static char * | |
9b1c24c8 | 11992 | read_direct_string (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read_ptr) |
c906108c SS |
11993 | { |
11994 | /* If the size of a host char is 8 bits, we can return a pointer | |
11995 | to the string, otherwise we have to copy the string to a buffer | |
11996 | allocated on the temporary obstack. */ | |
4bdf3d34 | 11997 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c SS |
11998 | if (*buf == '\0') |
11999 | { | |
12000 | *bytes_read_ptr = 1; | |
12001 | return NULL; | |
12002 | } | |
fe1b8b76 JB |
12003 | *bytes_read_ptr = strlen ((char *) buf) + 1; |
12004 | return (char *) buf; | |
4bdf3d34 JJ |
12005 | } |
12006 | ||
12007 | static char * | |
cf2c3c16 | 12008 | read_indirect_string_at_offset (bfd *abfd, LONGEST str_offset) |
4bdf3d34 | 12009 | { |
be391dca | 12010 | dwarf2_read_section (dwarf2_per_objfile->objfile, &dwarf2_per_objfile->str); |
dce234bc | 12011 | if (dwarf2_per_objfile->str.buffer == NULL) |
cf2c3c16 TT |
12012 | error (_("DW_FORM_strp used without .debug_str section [in module %s]"), |
12013 | bfd_get_filename (abfd)); | |
dce234bc | 12014 | if (str_offset >= dwarf2_per_objfile->str.size) |
cf2c3c16 TT |
12015 | error (_("DW_FORM_strp pointing outside of " |
12016 | ".debug_str section [in module %s]"), | |
12017 | bfd_get_filename (abfd)); | |
4bdf3d34 | 12018 | gdb_assert (HOST_CHAR_BIT == 8); |
dce234bc | 12019 | if (dwarf2_per_objfile->str.buffer[str_offset] == '\0') |
4bdf3d34 | 12020 | return NULL; |
dce234bc | 12021 | return (char *) (dwarf2_per_objfile->str.buffer + str_offset); |
c906108c SS |
12022 | } |
12023 | ||
cf2c3c16 TT |
12024 | static char * |
12025 | read_indirect_string (bfd *abfd, gdb_byte *buf, | |
12026 | const struct comp_unit_head *cu_header, | |
12027 | unsigned int *bytes_read_ptr) | |
12028 | { | |
12029 | LONGEST str_offset = read_offset (abfd, buf, cu_header, bytes_read_ptr); | |
12030 | ||
12031 | return read_indirect_string_at_offset (abfd, str_offset); | |
12032 | } | |
12033 | ||
12df843f | 12034 | static ULONGEST |
fe1b8b76 | 12035 | read_unsigned_leb128 (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read_ptr) |
c906108c | 12036 | { |
12df843f | 12037 | ULONGEST result; |
ce5d95e1 | 12038 | unsigned int num_read; |
c906108c SS |
12039 | int i, shift; |
12040 | unsigned char byte; | |
12041 | ||
12042 | result = 0; | |
12043 | shift = 0; | |
12044 | num_read = 0; | |
12045 | i = 0; | |
12046 | while (1) | |
12047 | { | |
fe1b8b76 | 12048 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
12049 | buf++; |
12050 | num_read++; | |
12df843f | 12051 | result |= ((ULONGEST) (byte & 127) << shift); |
c906108c SS |
12052 | if ((byte & 128) == 0) |
12053 | { | |
12054 | break; | |
12055 | } | |
12056 | shift += 7; | |
12057 | } | |
12058 | *bytes_read_ptr = num_read; | |
12059 | return result; | |
12060 | } | |
12061 | ||
12df843f | 12062 | static LONGEST |
fe1b8b76 | 12063 | read_signed_leb128 (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read_ptr) |
c906108c | 12064 | { |
12df843f | 12065 | LONGEST result; |
77e0b926 | 12066 | int i, shift, num_read; |
c906108c SS |
12067 | unsigned char byte; |
12068 | ||
12069 | result = 0; | |
12070 | shift = 0; | |
c906108c SS |
12071 | num_read = 0; |
12072 | i = 0; | |
12073 | while (1) | |
12074 | { | |
fe1b8b76 | 12075 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
12076 | buf++; |
12077 | num_read++; | |
12df843f | 12078 | result |= ((LONGEST) (byte & 127) << shift); |
c906108c SS |
12079 | shift += 7; |
12080 | if ((byte & 128) == 0) | |
12081 | { | |
12082 | break; | |
12083 | } | |
12084 | } | |
77e0b926 | 12085 | if ((shift < 8 * sizeof (result)) && (byte & 0x40)) |
12df843f | 12086 | result |= -(((LONGEST) 1) << shift); |
c906108c SS |
12087 | *bytes_read_ptr = num_read; |
12088 | return result; | |
12089 | } | |
12090 | ||
3019eac3 DE |
12091 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. |
12092 | ADDR_BASE is the DW_AT_GNU_addr_base attribute or zero. | |
12093 | ADDR_SIZE is the size of addresses from the CU header. */ | |
12094 | ||
12095 | static CORE_ADDR | |
12096 | read_addr_index_1 (unsigned int addr_index, ULONGEST addr_base, int addr_size) | |
12097 | { | |
12098 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
12099 | bfd *abfd = objfile->obfd; | |
12100 | const gdb_byte *info_ptr; | |
12101 | ||
12102 | dwarf2_read_section (objfile, &dwarf2_per_objfile->addr); | |
12103 | if (dwarf2_per_objfile->addr.buffer == NULL) | |
12104 | error (_("DW_FORM_addr_index used without .debug_addr section [in module %s]"), | |
12105 | objfile->name); | |
12106 | if (addr_base + addr_index * addr_size >= dwarf2_per_objfile->addr.size) | |
12107 | error (_("DW_FORM_addr_index pointing outside of " | |
12108 | ".debug_addr section [in module %s]"), | |
12109 | objfile->name); | |
12110 | info_ptr = (dwarf2_per_objfile->addr.buffer | |
12111 | + addr_base + addr_index * addr_size); | |
12112 | if (addr_size == 4) | |
12113 | return bfd_get_32 (abfd, info_ptr); | |
12114 | else | |
12115 | return bfd_get_64 (abfd, info_ptr); | |
12116 | } | |
12117 | ||
12118 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. */ | |
12119 | ||
12120 | static CORE_ADDR | |
12121 | read_addr_index (struct dwarf2_cu *cu, unsigned int addr_index) | |
12122 | { | |
12123 | return read_addr_index_1 (addr_index, cu->addr_base, cu->header.addr_size); | |
12124 | } | |
12125 | ||
12126 | /* Given a pointer to an leb128 value, fetch the value from .debug_addr. */ | |
12127 | ||
12128 | static CORE_ADDR | |
12129 | read_addr_index_from_leb128 (struct dwarf2_cu *cu, gdb_byte *info_ptr, | |
12130 | unsigned int *bytes_read) | |
12131 | { | |
12132 | bfd *abfd = cu->objfile->obfd; | |
12133 | unsigned int addr_index = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
12134 | ||
12135 | return read_addr_index (cu, addr_index); | |
12136 | } | |
12137 | ||
12138 | /* Data structure to pass results from dwarf2_read_addr_index_reader | |
12139 | back to dwarf2_read_addr_index. */ | |
12140 | ||
12141 | struct dwarf2_read_addr_index_data | |
12142 | { | |
12143 | ULONGEST addr_base; | |
12144 | int addr_size; | |
12145 | }; | |
12146 | ||
12147 | /* die_reader_func for dwarf2_read_addr_index. */ | |
12148 | ||
12149 | static void | |
12150 | dwarf2_read_addr_index_reader (const struct die_reader_specs *reader, | |
12151 | gdb_byte *info_ptr, | |
12152 | struct die_info *comp_unit_die, | |
12153 | int has_children, | |
12154 | void *data) | |
12155 | { | |
12156 | struct dwarf2_cu *cu = reader->cu; | |
12157 | struct dwarf2_read_addr_index_data *aidata = | |
12158 | (struct dwarf2_read_addr_index_data *) data; | |
12159 | ||
12160 | aidata->addr_base = cu->addr_base; | |
12161 | aidata->addr_size = cu->header.addr_size; | |
12162 | } | |
12163 | ||
12164 | /* Given an index in .debug_addr, fetch the value. | |
12165 | NOTE: This can be called during dwarf expression evaluation, | |
12166 | long after the debug information has been read, and thus per_cu->cu | |
12167 | may no longer exist. */ | |
12168 | ||
12169 | CORE_ADDR | |
12170 | dwarf2_read_addr_index (struct dwarf2_per_cu_data *per_cu, | |
12171 | unsigned int addr_index) | |
12172 | { | |
12173 | struct objfile *objfile = per_cu->objfile; | |
12174 | struct dwarf2_cu *cu = per_cu->cu; | |
12175 | ULONGEST addr_base; | |
12176 | int addr_size; | |
12177 | ||
12178 | /* This is intended to be called from outside this file. */ | |
12179 | dw2_setup (objfile); | |
12180 | ||
12181 | /* We need addr_base and addr_size. | |
12182 | If we don't have PER_CU->cu, we have to get it. | |
12183 | Nasty, but the alternative is storing the needed info in PER_CU, | |
12184 | which at this point doesn't seem justified: it's not clear how frequently | |
12185 | it would get used and it would increase the size of every PER_CU. | |
12186 | Entry points like dwarf2_per_cu_addr_size do a similar thing | |
12187 | so we're not in uncharted territory here. | |
12188 | Alas we need to be a bit more complicated as addr_base is contained | |
12189 | in the DIE. | |
12190 | ||
12191 | We don't need to read the entire CU(/TU). | |
12192 | We just need the header and top level die. | |
12193 | IWBN to use the aging mechanism to let us lazily later discard the CU. | |
12194 | See however init_cutu_and_read_dies_simple. */ | |
12195 | ||
12196 | if (cu != NULL) | |
12197 | { | |
12198 | addr_base = cu->addr_base; | |
12199 | addr_size = cu->header.addr_size; | |
12200 | } | |
12201 | else | |
12202 | { | |
12203 | struct dwarf2_read_addr_index_data aidata; | |
12204 | ||
12205 | init_cutu_and_read_dies_simple (per_cu, dwarf2_read_addr_index_reader, | |
12206 | &aidata); | |
12207 | addr_base = aidata.addr_base; | |
12208 | addr_size = aidata.addr_size; | |
12209 | } | |
12210 | ||
12211 | return read_addr_index_1 (addr_index, addr_base, addr_size); | |
12212 | } | |
12213 | ||
12214 | /* Given a DW_AT_str_index, fetch the string. */ | |
12215 | ||
12216 | static char * | |
12217 | read_str_index (const struct die_reader_specs *reader, | |
12218 | struct dwarf2_cu *cu, ULONGEST str_index) | |
12219 | { | |
12220 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
12221 | const char *dwo_name = objfile->name; | |
12222 | bfd *abfd = objfile->obfd; | |
12223 | struct dwo_sections *sections = &reader->dwo_file->sections; | |
12224 | gdb_byte *info_ptr; | |
12225 | ULONGEST str_offset; | |
12226 | ||
12227 | dwarf2_read_section (objfile, §ions->str); | |
12228 | dwarf2_read_section (objfile, §ions->str_offsets); | |
12229 | if (sections->str.buffer == NULL) | |
12230 | error (_("DW_FORM_str_index used without .debug_str.dwo section" | |
12231 | " in CU at offset 0x%lx [in module %s]"), | |
12232 | (long) cu->header.offset.sect_off, dwo_name); | |
12233 | if (sections->str_offsets.buffer == NULL) | |
12234 | error (_("DW_FORM_str_index used without .debug_str_offsets.dwo section" | |
12235 | " in CU at offset 0x%lx [in module %s]"), | |
12236 | (long) cu->header.offset.sect_off, dwo_name); | |
12237 | if (str_index * cu->header.offset_size >= sections->str_offsets.size) | |
12238 | error (_("DW_FORM_str_index pointing outside of .debug_str_offsets.dwo" | |
12239 | " section in CU at offset 0x%lx [in module %s]"), | |
12240 | (long) cu->header.offset.sect_off, dwo_name); | |
12241 | info_ptr = (sections->str_offsets.buffer | |
12242 | + str_index * cu->header.offset_size); | |
12243 | if (cu->header.offset_size == 4) | |
12244 | str_offset = bfd_get_32 (abfd, info_ptr); | |
12245 | else | |
12246 | str_offset = bfd_get_64 (abfd, info_ptr); | |
12247 | if (str_offset >= sections->str.size) | |
12248 | error (_("Offset from DW_FORM_str_index pointing outside of" | |
12249 | " .debug_str.dwo section in CU at offset 0x%lx [in module %s]"), | |
12250 | (long) cu->header.offset.sect_off, dwo_name); | |
12251 | return (char *) (sections->str.buffer + str_offset); | |
12252 | } | |
12253 | ||
4bb7a0a7 DJ |
12254 | /* Return a pointer to just past the end of an LEB128 number in BUF. */ |
12255 | ||
fe1b8b76 JB |
12256 | static gdb_byte * |
12257 | skip_leb128 (bfd *abfd, gdb_byte *buf) | |
4bb7a0a7 DJ |
12258 | { |
12259 | int byte; | |
12260 | ||
12261 | while (1) | |
12262 | { | |
fe1b8b76 | 12263 | byte = bfd_get_8 (abfd, buf); |
4bb7a0a7 DJ |
12264 | buf++; |
12265 | if ((byte & 128) == 0) | |
12266 | return buf; | |
12267 | } | |
12268 | } | |
12269 | ||
3019eac3 DE |
12270 | /* Return the length of an LEB128 number in BUF. */ |
12271 | ||
12272 | static int | |
12273 | leb128_size (const gdb_byte *buf) | |
12274 | { | |
12275 | const gdb_byte *begin = buf; | |
12276 | gdb_byte byte; | |
12277 | ||
12278 | while (1) | |
12279 | { | |
12280 | byte = *buf++; | |
12281 | if ((byte & 128) == 0) | |
12282 | return buf - begin; | |
12283 | } | |
12284 | } | |
12285 | ||
c906108c | 12286 | static void |
e142c38c | 12287 | set_cu_language (unsigned int lang, struct dwarf2_cu *cu) |
c906108c SS |
12288 | { |
12289 | switch (lang) | |
12290 | { | |
12291 | case DW_LANG_C89: | |
76bee0cc | 12292 | case DW_LANG_C99: |
c906108c | 12293 | case DW_LANG_C: |
e142c38c | 12294 | cu->language = language_c; |
c906108c SS |
12295 | break; |
12296 | case DW_LANG_C_plus_plus: | |
e142c38c | 12297 | cu->language = language_cplus; |
c906108c | 12298 | break; |
6aecb9c2 JB |
12299 | case DW_LANG_D: |
12300 | cu->language = language_d; | |
12301 | break; | |
c906108c SS |
12302 | case DW_LANG_Fortran77: |
12303 | case DW_LANG_Fortran90: | |
b21b22e0 | 12304 | case DW_LANG_Fortran95: |
e142c38c | 12305 | cu->language = language_fortran; |
c906108c | 12306 | break; |
a766d390 DE |
12307 | case DW_LANG_Go: |
12308 | cu->language = language_go; | |
12309 | break; | |
c906108c | 12310 | case DW_LANG_Mips_Assembler: |
e142c38c | 12311 | cu->language = language_asm; |
c906108c | 12312 | break; |
bebd888e | 12313 | case DW_LANG_Java: |
e142c38c | 12314 | cu->language = language_java; |
bebd888e | 12315 | break; |
c906108c | 12316 | case DW_LANG_Ada83: |
8aaf0b47 | 12317 | case DW_LANG_Ada95: |
bc5f45f8 JB |
12318 | cu->language = language_ada; |
12319 | break; | |
72019c9c GM |
12320 | case DW_LANG_Modula2: |
12321 | cu->language = language_m2; | |
12322 | break; | |
fe8e67fd PM |
12323 | case DW_LANG_Pascal83: |
12324 | cu->language = language_pascal; | |
12325 | break; | |
22566fbd DJ |
12326 | case DW_LANG_ObjC: |
12327 | cu->language = language_objc; | |
12328 | break; | |
c906108c SS |
12329 | case DW_LANG_Cobol74: |
12330 | case DW_LANG_Cobol85: | |
c906108c | 12331 | default: |
e142c38c | 12332 | cu->language = language_minimal; |
c906108c SS |
12333 | break; |
12334 | } | |
e142c38c | 12335 | cu->language_defn = language_def (cu->language); |
c906108c SS |
12336 | } |
12337 | ||
12338 | /* Return the named attribute or NULL if not there. */ | |
12339 | ||
12340 | static struct attribute * | |
e142c38c | 12341 | dwarf2_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) |
c906108c | 12342 | { |
a48e046c | 12343 | for (;;) |
c906108c | 12344 | { |
a48e046c TT |
12345 | unsigned int i; |
12346 | struct attribute *spec = NULL; | |
12347 | ||
12348 | for (i = 0; i < die->num_attrs; ++i) | |
12349 | { | |
12350 | if (die->attrs[i].name == name) | |
12351 | return &die->attrs[i]; | |
12352 | if (die->attrs[i].name == DW_AT_specification | |
12353 | || die->attrs[i].name == DW_AT_abstract_origin) | |
12354 | spec = &die->attrs[i]; | |
12355 | } | |
12356 | ||
12357 | if (!spec) | |
12358 | break; | |
c906108c | 12359 | |
f2f0e013 | 12360 | die = follow_die_ref (die, spec, &cu); |
f2f0e013 | 12361 | } |
c5aa993b | 12362 | |
c906108c SS |
12363 | return NULL; |
12364 | } | |
12365 | ||
348e048f DE |
12366 | /* Return the named attribute or NULL if not there, |
12367 | but do not follow DW_AT_specification, etc. | |
12368 | This is for use in contexts where we're reading .debug_types dies. | |
12369 | Following DW_AT_specification, DW_AT_abstract_origin will take us | |
12370 | back up the chain, and we want to go down. */ | |
12371 | ||
12372 | static struct attribute * | |
12373 | dwarf2_attr_no_follow (struct die_info *die, unsigned int name, | |
12374 | struct dwarf2_cu *cu) | |
12375 | { | |
12376 | unsigned int i; | |
12377 | ||
12378 | for (i = 0; i < die->num_attrs; ++i) | |
12379 | if (die->attrs[i].name == name) | |
12380 | return &die->attrs[i]; | |
12381 | ||
12382 | return NULL; | |
12383 | } | |
12384 | ||
05cf31d1 JB |
12385 | /* Return non-zero iff the attribute NAME is defined for the given DIE, |
12386 | and holds a non-zero value. This function should only be used for | |
2dc7f7b3 | 12387 | DW_FORM_flag or DW_FORM_flag_present attributes. */ |
05cf31d1 JB |
12388 | |
12389 | static int | |
12390 | dwarf2_flag_true_p (struct die_info *die, unsigned name, struct dwarf2_cu *cu) | |
12391 | { | |
12392 | struct attribute *attr = dwarf2_attr (die, name, cu); | |
12393 | ||
12394 | return (attr && DW_UNSND (attr)); | |
12395 | } | |
12396 | ||
3ca72b44 | 12397 | static int |
e142c38c | 12398 | die_is_declaration (struct die_info *die, struct dwarf2_cu *cu) |
3ca72b44 | 12399 | { |
05cf31d1 JB |
12400 | /* A DIE is a declaration if it has a DW_AT_declaration attribute |
12401 | which value is non-zero. However, we have to be careful with | |
12402 | DIEs having a DW_AT_specification attribute, because dwarf2_attr() | |
12403 | (via dwarf2_flag_true_p) follows this attribute. So we may | |
12404 | end up accidently finding a declaration attribute that belongs | |
12405 | to a different DIE referenced by the specification attribute, | |
12406 | even though the given DIE does not have a declaration attribute. */ | |
12407 | return (dwarf2_flag_true_p (die, DW_AT_declaration, cu) | |
12408 | && dwarf2_attr (die, DW_AT_specification, cu) == NULL); | |
3ca72b44 AC |
12409 | } |
12410 | ||
63d06c5c | 12411 | /* Return the die giving the specification for DIE, if there is |
f2f0e013 | 12412 | one. *SPEC_CU is the CU containing DIE on input, and the CU |
edb3359d DJ |
12413 | containing the return value on output. If there is no |
12414 | specification, but there is an abstract origin, that is | |
12415 | returned. */ | |
63d06c5c DC |
12416 | |
12417 | static struct die_info * | |
f2f0e013 | 12418 | die_specification (struct die_info *die, struct dwarf2_cu **spec_cu) |
63d06c5c | 12419 | { |
f2f0e013 DJ |
12420 | struct attribute *spec_attr = dwarf2_attr (die, DW_AT_specification, |
12421 | *spec_cu); | |
63d06c5c | 12422 | |
edb3359d DJ |
12423 | if (spec_attr == NULL) |
12424 | spec_attr = dwarf2_attr (die, DW_AT_abstract_origin, *spec_cu); | |
12425 | ||
63d06c5c DC |
12426 | if (spec_attr == NULL) |
12427 | return NULL; | |
12428 | else | |
f2f0e013 | 12429 | return follow_die_ref (die, spec_attr, spec_cu); |
63d06c5c | 12430 | } |
c906108c | 12431 | |
debd256d | 12432 | /* Free the line_header structure *LH, and any arrays and strings it |
ae2de4f8 DE |
12433 | refers to. |
12434 | NOTE: This is also used as a "cleanup" function. */ | |
12435 | ||
debd256d JB |
12436 | static void |
12437 | free_line_header (struct line_header *lh) | |
12438 | { | |
12439 | if (lh->standard_opcode_lengths) | |
a8bc7b56 | 12440 | xfree (lh->standard_opcode_lengths); |
debd256d JB |
12441 | |
12442 | /* Remember that all the lh->file_names[i].name pointers are | |
12443 | pointers into debug_line_buffer, and don't need to be freed. */ | |
12444 | if (lh->file_names) | |
a8bc7b56 | 12445 | xfree (lh->file_names); |
debd256d JB |
12446 | |
12447 | /* Similarly for the include directory names. */ | |
12448 | if (lh->include_dirs) | |
a8bc7b56 | 12449 | xfree (lh->include_dirs); |
debd256d | 12450 | |
a8bc7b56 | 12451 | xfree (lh); |
debd256d JB |
12452 | } |
12453 | ||
debd256d | 12454 | /* Add an entry to LH's include directory table. */ |
ae2de4f8 | 12455 | |
debd256d JB |
12456 | static void |
12457 | add_include_dir (struct line_header *lh, char *include_dir) | |
c906108c | 12458 | { |
debd256d JB |
12459 | /* Grow the array if necessary. */ |
12460 | if (lh->include_dirs_size == 0) | |
c5aa993b | 12461 | { |
debd256d JB |
12462 | lh->include_dirs_size = 1; /* for testing */ |
12463 | lh->include_dirs = xmalloc (lh->include_dirs_size | |
12464 | * sizeof (*lh->include_dirs)); | |
12465 | } | |
12466 | else if (lh->num_include_dirs >= lh->include_dirs_size) | |
12467 | { | |
12468 | lh->include_dirs_size *= 2; | |
12469 | lh->include_dirs = xrealloc (lh->include_dirs, | |
12470 | (lh->include_dirs_size | |
12471 | * sizeof (*lh->include_dirs))); | |
c5aa993b | 12472 | } |
c906108c | 12473 | |
debd256d JB |
12474 | lh->include_dirs[lh->num_include_dirs++] = include_dir; |
12475 | } | |
6e70227d | 12476 | |
debd256d | 12477 | /* Add an entry to LH's file name table. */ |
ae2de4f8 | 12478 | |
debd256d JB |
12479 | static void |
12480 | add_file_name (struct line_header *lh, | |
12481 | char *name, | |
12482 | unsigned int dir_index, | |
12483 | unsigned int mod_time, | |
12484 | unsigned int length) | |
12485 | { | |
12486 | struct file_entry *fe; | |
12487 | ||
12488 | /* Grow the array if necessary. */ | |
12489 | if (lh->file_names_size == 0) | |
12490 | { | |
12491 | lh->file_names_size = 1; /* for testing */ | |
12492 | lh->file_names = xmalloc (lh->file_names_size | |
12493 | * sizeof (*lh->file_names)); | |
12494 | } | |
12495 | else if (lh->num_file_names >= lh->file_names_size) | |
12496 | { | |
12497 | lh->file_names_size *= 2; | |
12498 | lh->file_names = xrealloc (lh->file_names, | |
12499 | (lh->file_names_size | |
12500 | * sizeof (*lh->file_names))); | |
12501 | } | |
12502 | ||
12503 | fe = &lh->file_names[lh->num_file_names++]; | |
12504 | fe->name = name; | |
12505 | fe->dir_index = dir_index; | |
12506 | fe->mod_time = mod_time; | |
12507 | fe->length = length; | |
aaa75496 | 12508 | fe->included_p = 0; |
cb1df416 | 12509 | fe->symtab = NULL; |
debd256d | 12510 | } |
6e70227d | 12511 | |
debd256d | 12512 | /* Read the statement program header starting at OFFSET in |
3019eac3 | 12513 | .debug_line, or .debug_line.dwo. Return a pointer |
6502dd73 | 12514 | to a struct line_header, allocated using xmalloc. |
debd256d JB |
12515 | |
12516 | NOTE: the strings in the include directory and file name tables of | |
3019eac3 DE |
12517 | the returned object point into the dwarf line section buffer, |
12518 | and must not be freed. */ | |
ae2de4f8 | 12519 | |
debd256d | 12520 | static struct line_header * |
3019eac3 | 12521 | dwarf_decode_line_header (unsigned int offset, struct dwarf2_cu *cu) |
debd256d JB |
12522 | { |
12523 | struct cleanup *back_to; | |
12524 | struct line_header *lh; | |
fe1b8b76 | 12525 | gdb_byte *line_ptr; |
c764a876 | 12526 | unsigned int bytes_read, offset_size; |
debd256d JB |
12527 | int i; |
12528 | char *cur_dir, *cur_file; | |
3019eac3 DE |
12529 | struct dwarf2_section_info *section; |
12530 | bfd *abfd; | |
12531 | ||
12532 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
12533 | DWO file. */ | |
12534 | if (cu->dwo_unit && cu->per_cu->is_debug_types) | |
12535 | section = &cu->dwo_unit->dwo_file->sections.line; | |
12536 | else | |
12537 | section = &dwarf2_per_objfile->line; | |
debd256d | 12538 | |
3019eac3 DE |
12539 | dwarf2_read_section (dwarf2_per_objfile->objfile, section); |
12540 | if (section->buffer == NULL) | |
debd256d | 12541 | { |
3019eac3 DE |
12542 | if (cu->dwo_unit && cu->per_cu->is_debug_types) |
12543 | complaint (&symfile_complaints, _("missing .debug_line.dwo section")); | |
12544 | else | |
12545 | complaint (&symfile_complaints, _("missing .debug_line section")); | |
debd256d JB |
12546 | return 0; |
12547 | } | |
12548 | ||
fceca515 DE |
12549 | /* We can't do this until we know the section is non-empty. |
12550 | Only then do we know we have such a section. */ | |
12551 | abfd = section->asection->owner; | |
12552 | ||
a738430d MK |
12553 | /* Make sure that at least there's room for the total_length field. |
12554 | That could be 12 bytes long, but we're just going to fudge that. */ | |
3019eac3 | 12555 | if (offset + 4 >= section->size) |
debd256d | 12556 | { |
4d3c2250 | 12557 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
12558 | return 0; |
12559 | } | |
12560 | ||
12561 | lh = xmalloc (sizeof (*lh)); | |
12562 | memset (lh, 0, sizeof (*lh)); | |
12563 | back_to = make_cleanup ((make_cleanup_ftype *) free_line_header, | |
12564 | (void *) lh); | |
12565 | ||
3019eac3 | 12566 | line_ptr = section->buffer + offset; |
debd256d | 12567 | |
a738430d | 12568 | /* Read in the header. */ |
6e70227d | 12569 | lh->total_length = |
c764a876 DE |
12570 | read_checked_initial_length_and_offset (abfd, line_ptr, &cu->header, |
12571 | &bytes_read, &offset_size); | |
debd256d | 12572 | line_ptr += bytes_read; |
3019eac3 | 12573 | if (line_ptr + lh->total_length > (section->buffer + section->size)) |
debd256d | 12574 | { |
4d3c2250 | 12575 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
12576 | return 0; |
12577 | } | |
12578 | lh->statement_program_end = line_ptr + lh->total_length; | |
12579 | lh->version = read_2_bytes (abfd, line_ptr); | |
12580 | line_ptr += 2; | |
c764a876 DE |
12581 | lh->header_length = read_offset_1 (abfd, line_ptr, offset_size); |
12582 | line_ptr += offset_size; | |
debd256d JB |
12583 | lh->minimum_instruction_length = read_1_byte (abfd, line_ptr); |
12584 | line_ptr += 1; | |
2dc7f7b3 TT |
12585 | if (lh->version >= 4) |
12586 | { | |
12587 | lh->maximum_ops_per_instruction = read_1_byte (abfd, line_ptr); | |
12588 | line_ptr += 1; | |
12589 | } | |
12590 | else | |
12591 | lh->maximum_ops_per_instruction = 1; | |
12592 | ||
12593 | if (lh->maximum_ops_per_instruction == 0) | |
12594 | { | |
12595 | lh->maximum_ops_per_instruction = 1; | |
12596 | complaint (&symfile_complaints, | |
3e43a32a MS |
12597 | _("invalid maximum_ops_per_instruction " |
12598 | "in `.debug_line' section")); | |
2dc7f7b3 TT |
12599 | } |
12600 | ||
debd256d JB |
12601 | lh->default_is_stmt = read_1_byte (abfd, line_ptr); |
12602 | line_ptr += 1; | |
12603 | lh->line_base = read_1_signed_byte (abfd, line_ptr); | |
12604 | line_ptr += 1; | |
12605 | lh->line_range = read_1_byte (abfd, line_ptr); | |
12606 | line_ptr += 1; | |
12607 | lh->opcode_base = read_1_byte (abfd, line_ptr); | |
12608 | line_ptr += 1; | |
12609 | lh->standard_opcode_lengths | |
fe1b8b76 | 12610 | = xmalloc (lh->opcode_base * sizeof (lh->standard_opcode_lengths[0])); |
debd256d JB |
12611 | |
12612 | lh->standard_opcode_lengths[0] = 1; /* This should never be used anyway. */ | |
12613 | for (i = 1; i < lh->opcode_base; ++i) | |
12614 | { | |
12615 | lh->standard_opcode_lengths[i] = read_1_byte (abfd, line_ptr); | |
12616 | line_ptr += 1; | |
12617 | } | |
12618 | ||
a738430d | 12619 | /* Read directory table. */ |
9b1c24c8 | 12620 | while ((cur_dir = read_direct_string (abfd, line_ptr, &bytes_read)) != NULL) |
debd256d JB |
12621 | { |
12622 | line_ptr += bytes_read; | |
12623 | add_include_dir (lh, cur_dir); | |
12624 | } | |
12625 | line_ptr += bytes_read; | |
12626 | ||
a738430d | 12627 | /* Read file name table. */ |
9b1c24c8 | 12628 | while ((cur_file = read_direct_string (abfd, line_ptr, &bytes_read)) != NULL) |
debd256d JB |
12629 | { |
12630 | unsigned int dir_index, mod_time, length; | |
12631 | ||
12632 | line_ptr += bytes_read; | |
12633 | dir_index = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
12634 | line_ptr += bytes_read; | |
12635 | mod_time = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
12636 | line_ptr += bytes_read; | |
12637 | length = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
12638 | line_ptr += bytes_read; | |
12639 | ||
12640 | add_file_name (lh, cur_file, dir_index, mod_time, length); | |
12641 | } | |
12642 | line_ptr += bytes_read; | |
6e70227d | 12643 | lh->statement_program_start = line_ptr; |
debd256d | 12644 | |
3019eac3 | 12645 | if (line_ptr > (section->buffer + section->size)) |
4d3c2250 | 12646 | complaint (&symfile_complaints, |
3e43a32a MS |
12647 | _("line number info header doesn't " |
12648 | "fit in `.debug_line' section")); | |
debd256d JB |
12649 | |
12650 | discard_cleanups (back_to); | |
12651 | return lh; | |
12652 | } | |
c906108c | 12653 | |
c6da4cef DE |
12654 | /* Subroutine of dwarf_decode_lines to simplify it. |
12655 | Return the file name of the psymtab for included file FILE_INDEX | |
12656 | in line header LH of PST. | |
12657 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
12658 | If space for the result is malloc'd, it will be freed by a cleanup. | |
12659 | Returns NULL if FILE_INDEX should be ignored, i.e., it is pst->filename. */ | |
12660 | ||
12661 | static char * | |
12662 | psymtab_include_file_name (const struct line_header *lh, int file_index, | |
12663 | const struct partial_symtab *pst, | |
12664 | const char *comp_dir) | |
12665 | { | |
12666 | const struct file_entry fe = lh->file_names [file_index]; | |
12667 | char *include_name = fe.name; | |
12668 | char *include_name_to_compare = include_name; | |
12669 | char *dir_name = NULL; | |
72b9f47f TT |
12670 | const char *pst_filename; |
12671 | char *copied_name = NULL; | |
c6da4cef DE |
12672 | int file_is_pst; |
12673 | ||
12674 | if (fe.dir_index) | |
12675 | dir_name = lh->include_dirs[fe.dir_index - 1]; | |
12676 | ||
12677 | if (!IS_ABSOLUTE_PATH (include_name) | |
12678 | && (dir_name != NULL || comp_dir != NULL)) | |
12679 | { | |
12680 | /* Avoid creating a duplicate psymtab for PST. | |
12681 | We do this by comparing INCLUDE_NAME and PST_FILENAME. | |
12682 | Before we do the comparison, however, we need to account | |
12683 | for DIR_NAME and COMP_DIR. | |
12684 | First prepend dir_name (if non-NULL). If we still don't | |
12685 | have an absolute path prepend comp_dir (if non-NULL). | |
12686 | However, the directory we record in the include-file's | |
12687 | psymtab does not contain COMP_DIR (to match the | |
12688 | corresponding symtab(s)). | |
12689 | ||
12690 | Example: | |
12691 | ||
12692 | bash$ cd /tmp | |
12693 | bash$ gcc -g ./hello.c | |
12694 | include_name = "hello.c" | |
12695 | dir_name = "." | |
12696 | DW_AT_comp_dir = comp_dir = "/tmp" | |
12697 | DW_AT_name = "./hello.c" */ | |
12698 | ||
12699 | if (dir_name != NULL) | |
12700 | { | |
12701 | include_name = concat (dir_name, SLASH_STRING, | |
12702 | include_name, (char *)NULL); | |
12703 | include_name_to_compare = include_name; | |
12704 | make_cleanup (xfree, include_name); | |
12705 | } | |
12706 | if (!IS_ABSOLUTE_PATH (include_name) && comp_dir != NULL) | |
12707 | { | |
12708 | include_name_to_compare = concat (comp_dir, SLASH_STRING, | |
12709 | include_name, (char *)NULL); | |
12710 | } | |
12711 | } | |
12712 | ||
12713 | pst_filename = pst->filename; | |
12714 | if (!IS_ABSOLUTE_PATH (pst_filename) && pst->dirname != NULL) | |
12715 | { | |
72b9f47f TT |
12716 | copied_name = concat (pst->dirname, SLASH_STRING, |
12717 | pst_filename, (char *)NULL); | |
12718 | pst_filename = copied_name; | |
c6da4cef DE |
12719 | } |
12720 | ||
1e3fad37 | 12721 | file_is_pst = FILENAME_CMP (include_name_to_compare, pst_filename) == 0; |
c6da4cef DE |
12722 | |
12723 | if (include_name_to_compare != include_name) | |
12724 | xfree (include_name_to_compare); | |
72b9f47f TT |
12725 | if (copied_name != NULL) |
12726 | xfree (copied_name); | |
c6da4cef DE |
12727 | |
12728 | if (file_is_pst) | |
12729 | return NULL; | |
12730 | return include_name; | |
12731 | } | |
12732 | ||
c91513d8 PP |
12733 | /* Ignore this record_line request. */ |
12734 | ||
12735 | static void | |
12736 | noop_record_line (struct subfile *subfile, int line, CORE_ADDR pc) | |
12737 | { | |
12738 | return; | |
12739 | } | |
12740 | ||
f3f5162e DE |
12741 | /* Subroutine of dwarf_decode_lines to simplify it. |
12742 | Process the line number information in LH. */ | |
debd256d | 12743 | |
c906108c | 12744 | static void |
f3f5162e DE |
12745 | dwarf_decode_lines_1 (struct line_header *lh, const char *comp_dir, |
12746 | struct dwarf2_cu *cu, struct partial_symtab *pst) | |
c906108c | 12747 | { |
a8c50c1f | 12748 | gdb_byte *line_ptr, *extended_end; |
fe1b8b76 | 12749 | gdb_byte *line_end; |
a8c50c1f | 12750 | unsigned int bytes_read, extended_len; |
c906108c | 12751 | unsigned char op_code, extended_op, adj_opcode; |
e142c38c DJ |
12752 | CORE_ADDR baseaddr; |
12753 | struct objfile *objfile = cu->objfile; | |
f3f5162e | 12754 | bfd *abfd = objfile->obfd; |
fbf65064 | 12755 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
aaa75496 | 12756 | const int decode_for_pst_p = (pst != NULL); |
f3f5162e | 12757 | struct subfile *last_subfile = NULL; |
c91513d8 PP |
12758 | void (*p_record_line) (struct subfile *subfile, int line, CORE_ADDR pc) |
12759 | = record_line; | |
e142c38c DJ |
12760 | |
12761 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 12762 | |
debd256d JB |
12763 | line_ptr = lh->statement_program_start; |
12764 | line_end = lh->statement_program_end; | |
c906108c SS |
12765 | |
12766 | /* Read the statement sequences until there's nothing left. */ | |
12767 | while (line_ptr < line_end) | |
12768 | { | |
12769 | /* state machine registers */ | |
12770 | CORE_ADDR address = 0; | |
12771 | unsigned int file = 1; | |
12772 | unsigned int line = 1; | |
12773 | unsigned int column = 0; | |
debd256d | 12774 | int is_stmt = lh->default_is_stmt; |
c906108c SS |
12775 | int basic_block = 0; |
12776 | int end_sequence = 0; | |
fbf65064 | 12777 | CORE_ADDR addr; |
2dc7f7b3 | 12778 | unsigned char op_index = 0; |
c906108c | 12779 | |
aaa75496 | 12780 | if (!decode_for_pst_p && lh->num_file_names >= file) |
c906108c | 12781 | { |
aaa75496 | 12782 | /* Start a subfile for the current file of the state machine. */ |
debd256d JB |
12783 | /* lh->include_dirs and lh->file_names are 0-based, but the |
12784 | directory and file name numbers in the statement program | |
12785 | are 1-based. */ | |
12786 | struct file_entry *fe = &lh->file_names[file - 1]; | |
4f1520fb | 12787 | char *dir = NULL; |
a738430d | 12788 | |
debd256d JB |
12789 | if (fe->dir_index) |
12790 | dir = lh->include_dirs[fe->dir_index - 1]; | |
4f1520fb FR |
12791 | |
12792 | dwarf2_start_subfile (fe->name, dir, comp_dir); | |
c906108c SS |
12793 | } |
12794 | ||
a738430d | 12795 | /* Decode the table. */ |
c5aa993b | 12796 | while (!end_sequence) |
c906108c SS |
12797 | { |
12798 | op_code = read_1_byte (abfd, line_ptr); | |
12799 | line_ptr += 1; | |
59205f5a JB |
12800 | if (line_ptr > line_end) |
12801 | { | |
12802 | dwarf2_debug_line_missing_end_sequence_complaint (); | |
12803 | break; | |
12804 | } | |
9aa1fe7e | 12805 | |
debd256d | 12806 | if (op_code >= lh->opcode_base) |
6e70227d | 12807 | { |
a738430d | 12808 | /* Special operand. */ |
debd256d | 12809 | adj_opcode = op_code - lh->opcode_base; |
2dc7f7b3 TT |
12810 | address += (((op_index + (adj_opcode / lh->line_range)) |
12811 | / lh->maximum_ops_per_instruction) | |
12812 | * lh->minimum_instruction_length); | |
12813 | op_index = ((op_index + (adj_opcode / lh->line_range)) | |
12814 | % lh->maximum_ops_per_instruction); | |
debd256d | 12815 | line += lh->line_base + (adj_opcode % lh->line_range); |
59205f5a | 12816 | if (lh->num_file_names < file || file == 0) |
25e43795 | 12817 | dwarf2_debug_line_missing_file_complaint (); |
2dc7f7b3 TT |
12818 | /* For now we ignore lines not starting on an |
12819 | instruction boundary. */ | |
12820 | else if (op_index == 0) | |
25e43795 DJ |
12821 | { |
12822 | lh->file_names[file - 1].included_p = 1; | |
ca5f395d | 12823 | if (!decode_for_pst_p && is_stmt) |
fbf65064 UW |
12824 | { |
12825 | if (last_subfile != current_subfile) | |
12826 | { | |
12827 | addr = gdbarch_addr_bits_remove (gdbarch, address); | |
12828 | if (last_subfile) | |
c91513d8 | 12829 | (*p_record_line) (last_subfile, 0, addr); |
fbf65064 UW |
12830 | last_subfile = current_subfile; |
12831 | } | |
25e43795 | 12832 | /* Append row to matrix using current values. */ |
7019d805 | 12833 | addr = gdbarch_addr_bits_remove (gdbarch, address); |
c91513d8 | 12834 | (*p_record_line) (current_subfile, line, addr); |
366da635 | 12835 | } |
25e43795 | 12836 | } |
ca5f395d | 12837 | basic_block = 0; |
9aa1fe7e GK |
12838 | } |
12839 | else switch (op_code) | |
c906108c SS |
12840 | { |
12841 | case DW_LNS_extended_op: | |
3e43a32a MS |
12842 | extended_len = read_unsigned_leb128 (abfd, line_ptr, |
12843 | &bytes_read); | |
473b7be6 | 12844 | line_ptr += bytes_read; |
a8c50c1f | 12845 | extended_end = line_ptr + extended_len; |
c906108c SS |
12846 | extended_op = read_1_byte (abfd, line_ptr); |
12847 | line_ptr += 1; | |
12848 | switch (extended_op) | |
12849 | { | |
12850 | case DW_LNE_end_sequence: | |
c91513d8 | 12851 | p_record_line = record_line; |
c906108c | 12852 | end_sequence = 1; |
c906108c SS |
12853 | break; |
12854 | case DW_LNE_set_address: | |
e7c27a73 | 12855 | address = read_address (abfd, line_ptr, cu, &bytes_read); |
c91513d8 PP |
12856 | |
12857 | if (address == 0 && !dwarf2_per_objfile->has_section_at_zero) | |
12858 | { | |
12859 | /* This line table is for a function which has been | |
12860 | GCd by the linker. Ignore it. PR gdb/12528 */ | |
12861 | ||
12862 | long line_offset | |
12863 | = line_ptr - dwarf2_per_objfile->line.buffer; | |
12864 | ||
12865 | complaint (&symfile_complaints, | |
12866 | _(".debug_line address at offset 0x%lx is 0 " | |
12867 | "[in module %s]"), | |
bb5ed363 | 12868 | line_offset, objfile->name); |
c91513d8 PP |
12869 | p_record_line = noop_record_line; |
12870 | } | |
12871 | ||
2dc7f7b3 | 12872 | op_index = 0; |
107d2387 AC |
12873 | line_ptr += bytes_read; |
12874 | address += baseaddr; | |
c906108c SS |
12875 | break; |
12876 | case DW_LNE_define_file: | |
debd256d JB |
12877 | { |
12878 | char *cur_file; | |
12879 | unsigned int dir_index, mod_time, length; | |
6e70227d | 12880 | |
3e43a32a MS |
12881 | cur_file = read_direct_string (abfd, line_ptr, |
12882 | &bytes_read); | |
debd256d JB |
12883 | line_ptr += bytes_read; |
12884 | dir_index = | |
12885 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
12886 | line_ptr += bytes_read; | |
12887 | mod_time = | |
12888 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
12889 | line_ptr += bytes_read; | |
12890 | length = | |
12891 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
12892 | line_ptr += bytes_read; | |
12893 | add_file_name (lh, cur_file, dir_index, mod_time, length); | |
12894 | } | |
c906108c | 12895 | break; |
d0c6ba3d CC |
12896 | case DW_LNE_set_discriminator: |
12897 | /* The discriminator is not interesting to the debugger; | |
12898 | just ignore it. */ | |
12899 | line_ptr = extended_end; | |
12900 | break; | |
c906108c | 12901 | default: |
4d3c2250 | 12902 | complaint (&symfile_complaints, |
e2e0b3e5 | 12903 | _("mangled .debug_line section")); |
debd256d | 12904 | return; |
c906108c | 12905 | } |
a8c50c1f DJ |
12906 | /* Make sure that we parsed the extended op correctly. If e.g. |
12907 | we expected a different address size than the producer used, | |
12908 | we may have read the wrong number of bytes. */ | |
12909 | if (line_ptr != extended_end) | |
12910 | { | |
12911 | complaint (&symfile_complaints, | |
12912 | _("mangled .debug_line section")); | |
12913 | return; | |
12914 | } | |
c906108c SS |
12915 | break; |
12916 | case DW_LNS_copy: | |
59205f5a | 12917 | if (lh->num_file_names < file || file == 0) |
25e43795 DJ |
12918 | dwarf2_debug_line_missing_file_complaint (); |
12919 | else | |
366da635 | 12920 | { |
25e43795 | 12921 | lh->file_names[file - 1].included_p = 1; |
ca5f395d | 12922 | if (!decode_for_pst_p && is_stmt) |
fbf65064 UW |
12923 | { |
12924 | if (last_subfile != current_subfile) | |
12925 | { | |
12926 | addr = gdbarch_addr_bits_remove (gdbarch, address); | |
12927 | if (last_subfile) | |
c91513d8 | 12928 | (*p_record_line) (last_subfile, 0, addr); |
fbf65064 UW |
12929 | last_subfile = current_subfile; |
12930 | } | |
7019d805 | 12931 | addr = gdbarch_addr_bits_remove (gdbarch, address); |
c91513d8 | 12932 | (*p_record_line) (current_subfile, line, addr); |
fbf65064 | 12933 | } |
366da635 | 12934 | } |
c906108c SS |
12935 | basic_block = 0; |
12936 | break; | |
12937 | case DW_LNS_advance_pc: | |
2dc7f7b3 TT |
12938 | { |
12939 | CORE_ADDR adjust | |
12940 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
12941 | ||
12942 | address += (((op_index + adjust) | |
12943 | / lh->maximum_ops_per_instruction) | |
12944 | * lh->minimum_instruction_length); | |
12945 | op_index = ((op_index + adjust) | |
12946 | % lh->maximum_ops_per_instruction); | |
12947 | line_ptr += bytes_read; | |
12948 | } | |
c906108c SS |
12949 | break; |
12950 | case DW_LNS_advance_line: | |
12951 | line += read_signed_leb128 (abfd, line_ptr, &bytes_read); | |
12952 | line_ptr += bytes_read; | |
12953 | break; | |
12954 | case DW_LNS_set_file: | |
debd256d | 12955 | { |
a738430d MK |
12956 | /* The arrays lh->include_dirs and lh->file_names are |
12957 | 0-based, but the directory and file name numbers in | |
12958 | the statement program are 1-based. */ | |
debd256d | 12959 | struct file_entry *fe; |
4f1520fb | 12960 | char *dir = NULL; |
a738430d | 12961 | |
debd256d JB |
12962 | file = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
12963 | line_ptr += bytes_read; | |
59205f5a | 12964 | if (lh->num_file_names < file || file == 0) |
25e43795 DJ |
12965 | dwarf2_debug_line_missing_file_complaint (); |
12966 | else | |
12967 | { | |
12968 | fe = &lh->file_names[file - 1]; | |
12969 | if (fe->dir_index) | |
12970 | dir = lh->include_dirs[fe->dir_index - 1]; | |
12971 | if (!decode_for_pst_p) | |
12972 | { | |
12973 | last_subfile = current_subfile; | |
12974 | dwarf2_start_subfile (fe->name, dir, comp_dir); | |
12975 | } | |
12976 | } | |
debd256d | 12977 | } |
c906108c SS |
12978 | break; |
12979 | case DW_LNS_set_column: | |
12980 | column = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
12981 | line_ptr += bytes_read; | |
12982 | break; | |
12983 | case DW_LNS_negate_stmt: | |
12984 | is_stmt = (!is_stmt); | |
12985 | break; | |
12986 | case DW_LNS_set_basic_block: | |
12987 | basic_block = 1; | |
12988 | break; | |
c2c6d25f JM |
12989 | /* Add to the address register of the state machine the |
12990 | address increment value corresponding to special opcode | |
a738430d MK |
12991 | 255. I.e., this value is scaled by the minimum |
12992 | instruction length since special opcode 255 would have | |
b021a221 | 12993 | scaled the increment. */ |
c906108c | 12994 | case DW_LNS_const_add_pc: |
2dc7f7b3 TT |
12995 | { |
12996 | CORE_ADDR adjust = (255 - lh->opcode_base) / lh->line_range; | |
12997 | ||
12998 | address += (((op_index + adjust) | |
12999 | / lh->maximum_ops_per_instruction) | |
13000 | * lh->minimum_instruction_length); | |
13001 | op_index = ((op_index + adjust) | |
13002 | % lh->maximum_ops_per_instruction); | |
13003 | } | |
c906108c SS |
13004 | break; |
13005 | case DW_LNS_fixed_advance_pc: | |
13006 | address += read_2_bytes (abfd, line_ptr); | |
2dc7f7b3 | 13007 | op_index = 0; |
c906108c SS |
13008 | line_ptr += 2; |
13009 | break; | |
9aa1fe7e | 13010 | default: |
a738430d MK |
13011 | { |
13012 | /* Unknown standard opcode, ignore it. */ | |
9aa1fe7e | 13013 | int i; |
a738430d | 13014 | |
debd256d | 13015 | for (i = 0; i < lh->standard_opcode_lengths[op_code]; i++) |
9aa1fe7e GK |
13016 | { |
13017 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
13018 | line_ptr += bytes_read; | |
13019 | } | |
13020 | } | |
c906108c SS |
13021 | } |
13022 | } | |
59205f5a JB |
13023 | if (lh->num_file_names < file || file == 0) |
13024 | dwarf2_debug_line_missing_file_complaint (); | |
13025 | else | |
13026 | { | |
13027 | lh->file_names[file - 1].included_p = 1; | |
13028 | if (!decode_for_pst_p) | |
fbf65064 UW |
13029 | { |
13030 | addr = gdbarch_addr_bits_remove (gdbarch, address); | |
c91513d8 | 13031 | (*p_record_line) (current_subfile, 0, addr); |
fbf65064 | 13032 | } |
59205f5a | 13033 | } |
c906108c | 13034 | } |
f3f5162e DE |
13035 | } |
13036 | ||
13037 | /* Decode the Line Number Program (LNP) for the given line_header | |
13038 | structure and CU. The actual information extracted and the type | |
13039 | of structures created from the LNP depends on the value of PST. | |
13040 | ||
13041 | 1. If PST is NULL, then this procedure uses the data from the program | |
13042 | to create all necessary symbol tables, and their linetables. | |
13043 | ||
13044 | 2. If PST is not NULL, this procedure reads the program to determine | |
13045 | the list of files included by the unit represented by PST, and | |
13046 | builds all the associated partial symbol tables. | |
13047 | ||
13048 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
13049 | It is used for relative paths in the line table. | |
13050 | NOTE: When processing partial symtabs (pst != NULL), | |
13051 | comp_dir == pst->dirname. | |
13052 | ||
13053 | NOTE: It is important that psymtabs have the same file name (via strcmp) | |
13054 | as the corresponding symtab. Since COMP_DIR is not used in the name of the | |
13055 | symtab we don't use it in the name of the psymtabs we create. | |
13056 | E.g. expand_line_sal requires this when finding psymtabs to expand. | |
13057 | A good testcase for this is mb-inline.exp. */ | |
13058 | ||
13059 | static void | |
13060 | dwarf_decode_lines (struct line_header *lh, const char *comp_dir, | |
13061 | struct dwarf2_cu *cu, struct partial_symtab *pst, | |
13062 | int want_line_info) | |
13063 | { | |
13064 | struct objfile *objfile = cu->objfile; | |
13065 | const int decode_for_pst_p = (pst != NULL); | |
13066 | struct subfile *first_subfile = current_subfile; | |
13067 | ||
13068 | if (want_line_info) | |
13069 | dwarf_decode_lines_1 (lh, comp_dir, cu, pst); | |
aaa75496 JB |
13070 | |
13071 | if (decode_for_pst_p) | |
13072 | { | |
13073 | int file_index; | |
13074 | ||
13075 | /* Now that we're done scanning the Line Header Program, we can | |
13076 | create the psymtab of each included file. */ | |
13077 | for (file_index = 0; file_index < lh->num_file_names; file_index++) | |
13078 | if (lh->file_names[file_index].included_p == 1) | |
13079 | { | |
c6da4cef DE |
13080 | char *include_name = |
13081 | psymtab_include_file_name (lh, file_index, pst, comp_dir); | |
13082 | if (include_name != NULL) | |
aaa75496 JB |
13083 | dwarf2_create_include_psymtab (include_name, pst, objfile); |
13084 | } | |
13085 | } | |
cb1df416 DJ |
13086 | else |
13087 | { | |
13088 | /* Make sure a symtab is created for every file, even files | |
13089 | which contain only variables (i.e. no code with associated | |
13090 | line numbers). */ | |
cb1df416 | 13091 | int i; |
cb1df416 DJ |
13092 | |
13093 | for (i = 0; i < lh->num_file_names; i++) | |
13094 | { | |
13095 | char *dir = NULL; | |
f3f5162e | 13096 | struct file_entry *fe; |
9a619af0 | 13097 | |
cb1df416 DJ |
13098 | fe = &lh->file_names[i]; |
13099 | if (fe->dir_index) | |
13100 | dir = lh->include_dirs[fe->dir_index - 1]; | |
13101 | dwarf2_start_subfile (fe->name, dir, comp_dir); | |
13102 | ||
13103 | /* Skip the main file; we don't need it, and it must be | |
13104 | allocated last, so that it will show up before the | |
13105 | non-primary symtabs in the objfile's symtab list. */ | |
13106 | if (current_subfile == first_subfile) | |
13107 | continue; | |
13108 | ||
13109 | if (current_subfile->symtab == NULL) | |
13110 | current_subfile->symtab = allocate_symtab (current_subfile->name, | |
bb5ed363 | 13111 | objfile); |
cb1df416 DJ |
13112 | fe->symtab = current_subfile->symtab; |
13113 | } | |
13114 | } | |
c906108c SS |
13115 | } |
13116 | ||
13117 | /* Start a subfile for DWARF. FILENAME is the name of the file and | |
13118 | DIRNAME the name of the source directory which contains FILENAME | |
4f1520fb FR |
13119 | or NULL if not known. COMP_DIR is the compilation directory for the |
13120 | linetable's compilation unit or NULL if not known. | |
c906108c SS |
13121 | This routine tries to keep line numbers from identical absolute and |
13122 | relative file names in a common subfile. | |
13123 | ||
13124 | Using the `list' example from the GDB testsuite, which resides in | |
13125 | /srcdir and compiling it with Irix6.2 cc in /compdir using a filename | |
13126 | of /srcdir/list0.c yields the following debugging information for list0.c: | |
13127 | ||
c5aa993b JM |
13128 | DW_AT_name: /srcdir/list0.c |
13129 | DW_AT_comp_dir: /compdir | |
357e46e7 | 13130 | files.files[0].name: list0.h |
c5aa993b | 13131 | files.files[0].dir: /srcdir |
357e46e7 | 13132 | files.files[1].name: list0.c |
c5aa993b | 13133 | files.files[1].dir: /srcdir |
c906108c SS |
13134 | |
13135 | The line number information for list0.c has to end up in a single | |
4f1520fb FR |
13136 | subfile, so that `break /srcdir/list0.c:1' works as expected. |
13137 | start_subfile will ensure that this happens provided that we pass the | |
13138 | concatenation of files.files[1].dir and files.files[1].name as the | |
13139 | subfile's name. */ | |
c906108c SS |
13140 | |
13141 | static void | |
3e43a32a MS |
13142 | dwarf2_start_subfile (char *filename, const char *dirname, |
13143 | const char *comp_dir) | |
c906108c | 13144 | { |
4f1520fb FR |
13145 | char *fullname; |
13146 | ||
13147 | /* While reading the DIEs, we call start_symtab(DW_AT_name, DW_AT_comp_dir). | |
13148 | `start_symtab' will always pass the contents of DW_AT_comp_dir as | |
13149 | second argument to start_subfile. To be consistent, we do the | |
13150 | same here. In order not to lose the line information directory, | |
13151 | we concatenate it to the filename when it makes sense. | |
13152 | Note that the Dwarf3 standard says (speaking of filenames in line | |
13153 | information): ``The directory index is ignored for file names | |
13154 | that represent full path names''. Thus ignoring dirname in the | |
13155 | `else' branch below isn't an issue. */ | |
c906108c | 13156 | |
d5166ae1 | 13157 | if (!IS_ABSOLUTE_PATH (filename) && dirname != NULL) |
4f1520fb FR |
13158 | fullname = concat (dirname, SLASH_STRING, filename, (char *)NULL); |
13159 | else | |
13160 | fullname = filename; | |
c906108c | 13161 | |
4f1520fb FR |
13162 | start_subfile (fullname, comp_dir); |
13163 | ||
13164 | if (fullname != filename) | |
13165 | xfree (fullname); | |
c906108c SS |
13166 | } |
13167 | ||
4c2df51b DJ |
13168 | static void |
13169 | var_decode_location (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 13170 | struct dwarf2_cu *cu) |
4c2df51b | 13171 | { |
e7c27a73 DJ |
13172 | struct objfile *objfile = cu->objfile; |
13173 | struct comp_unit_head *cu_header = &cu->header; | |
13174 | ||
4c2df51b DJ |
13175 | /* NOTE drow/2003-01-30: There used to be a comment and some special |
13176 | code here to turn a symbol with DW_AT_external and a | |
13177 | SYMBOL_VALUE_ADDRESS of 0 into a LOC_UNRESOLVED symbol. This was | |
13178 | necessary for platforms (maybe Alpha, certainly PowerPC GNU/Linux | |
13179 | with some versions of binutils) where shared libraries could have | |
13180 | relocations against symbols in their debug information - the | |
13181 | minimal symbol would have the right address, but the debug info | |
13182 | would not. It's no longer necessary, because we will explicitly | |
13183 | apply relocations when we read in the debug information now. */ | |
13184 | ||
13185 | /* A DW_AT_location attribute with no contents indicates that a | |
13186 | variable has been optimized away. */ | |
13187 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size == 0) | |
13188 | { | |
13189 | SYMBOL_CLASS (sym) = LOC_OPTIMIZED_OUT; | |
13190 | return; | |
13191 | } | |
13192 | ||
13193 | /* Handle one degenerate form of location expression specially, to | |
13194 | preserve GDB's previous behavior when section offsets are | |
3019eac3 DE |
13195 | specified. If this is just a DW_OP_addr or DW_OP_GNU_addr_index |
13196 | then mark this symbol as LOC_STATIC. */ | |
4c2df51b DJ |
13197 | |
13198 | if (attr_form_is_block (attr) | |
3019eac3 DE |
13199 | && ((DW_BLOCK (attr)->data[0] == DW_OP_addr |
13200 | && DW_BLOCK (attr)->size == 1 + cu_header->addr_size) | |
13201 | || (DW_BLOCK (attr)->data[0] == DW_OP_GNU_addr_index | |
13202 | && (DW_BLOCK (attr)->size | |
13203 | == 1 + leb128_size (&DW_BLOCK (attr)->data[1]))))) | |
4c2df51b | 13204 | { |
891d2f0b | 13205 | unsigned int dummy; |
4c2df51b | 13206 | |
3019eac3 DE |
13207 | if (DW_BLOCK (attr)->data[0] == DW_OP_addr) |
13208 | SYMBOL_VALUE_ADDRESS (sym) = | |
13209 | read_address (objfile->obfd, DW_BLOCK (attr)->data + 1, cu, &dummy); | |
13210 | else | |
13211 | SYMBOL_VALUE_ADDRESS (sym) = | |
13212 | read_addr_index_from_leb128 (cu, DW_BLOCK (attr)->data + 1, &dummy); | |
907fc202 | 13213 | SYMBOL_CLASS (sym) = LOC_STATIC; |
4c2df51b DJ |
13214 | fixup_symbol_section (sym, objfile); |
13215 | SYMBOL_VALUE_ADDRESS (sym) += ANOFFSET (objfile->section_offsets, | |
13216 | SYMBOL_SECTION (sym)); | |
4c2df51b DJ |
13217 | return; |
13218 | } | |
13219 | ||
13220 | /* NOTE drow/2002-01-30: It might be worthwhile to have a static | |
13221 | expression evaluator, and use LOC_COMPUTED only when necessary | |
13222 | (i.e. when the value of a register or memory location is | |
13223 | referenced, or a thread-local block, etc.). Then again, it might | |
13224 | not be worthwhile. I'm assuming that it isn't unless performance | |
13225 | or memory numbers show me otherwise. */ | |
13226 | ||
e7c27a73 | 13227 | dwarf2_symbol_mark_computed (attr, sym, cu); |
4c2df51b | 13228 | SYMBOL_CLASS (sym) = LOC_COMPUTED; |
8be455d7 JK |
13229 | |
13230 | if (SYMBOL_COMPUTED_OPS (sym) == &dwarf2_loclist_funcs) | |
13231 | cu->has_loclist = 1; | |
4c2df51b DJ |
13232 | } |
13233 | ||
c906108c SS |
13234 | /* Given a pointer to a DWARF information entry, figure out if we need |
13235 | to make a symbol table entry for it, and if so, create a new entry | |
13236 | and return a pointer to it. | |
13237 | If TYPE is NULL, determine symbol type from the die, otherwise | |
34eaf542 TT |
13238 | used the passed type. |
13239 | If SPACE is not NULL, use it to hold the new symbol. If it is | |
13240 | NULL, allocate a new symbol on the objfile's obstack. */ | |
c906108c SS |
13241 | |
13242 | static struct symbol * | |
34eaf542 TT |
13243 | new_symbol_full (struct die_info *die, struct type *type, struct dwarf2_cu *cu, |
13244 | struct symbol *space) | |
c906108c | 13245 | { |
e7c27a73 | 13246 | struct objfile *objfile = cu->objfile; |
c906108c SS |
13247 | struct symbol *sym = NULL; |
13248 | char *name; | |
13249 | struct attribute *attr = NULL; | |
13250 | struct attribute *attr2 = NULL; | |
e142c38c | 13251 | CORE_ADDR baseaddr; |
e37fd15a SW |
13252 | struct pending **list_to_add = NULL; |
13253 | ||
edb3359d | 13254 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
e142c38c DJ |
13255 | |
13256 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 13257 | |
94af9270 | 13258 | name = dwarf2_name (die, cu); |
c906108c SS |
13259 | if (name) |
13260 | { | |
94af9270 | 13261 | const char *linkagename; |
34eaf542 | 13262 | int suppress_add = 0; |
94af9270 | 13263 | |
34eaf542 TT |
13264 | if (space) |
13265 | sym = space; | |
13266 | else | |
13267 | sym = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct symbol); | |
c906108c | 13268 | OBJSTAT (objfile, n_syms++); |
2de7ced7 DJ |
13269 | |
13270 | /* Cache this symbol's name and the name's demangled form (if any). */ | |
33e5013e | 13271 | SYMBOL_SET_LANGUAGE (sym, cu->language); |
94af9270 KS |
13272 | linkagename = dwarf2_physname (name, die, cu); |
13273 | SYMBOL_SET_NAMES (sym, linkagename, strlen (linkagename), 0, objfile); | |
c906108c | 13274 | |
f55ee35c JK |
13275 | /* Fortran does not have mangling standard and the mangling does differ |
13276 | between gfortran, iFort etc. */ | |
13277 | if (cu->language == language_fortran | |
b250c185 | 13278 | && symbol_get_demangled_name (&(sym->ginfo)) == NULL) |
29df156d SW |
13279 | symbol_set_demangled_name (&(sym->ginfo), |
13280 | (char *) dwarf2_full_name (name, die, cu), | |
13281 | NULL); | |
f55ee35c | 13282 | |
c906108c | 13283 | /* Default assumptions. |
c5aa993b | 13284 | Use the passed type or decode it from the die. */ |
176620f1 | 13285 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
875dc2fc | 13286 | SYMBOL_CLASS (sym) = LOC_OPTIMIZED_OUT; |
c906108c SS |
13287 | if (type != NULL) |
13288 | SYMBOL_TYPE (sym) = type; | |
13289 | else | |
e7c27a73 | 13290 | SYMBOL_TYPE (sym) = die_type (die, cu); |
edb3359d DJ |
13291 | attr = dwarf2_attr (die, |
13292 | inlined_func ? DW_AT_call_line : DW_AT_decl_line, | |
13293 | cu); | |
c906108c SS |
13294 | if (attr) |
13295 | { | |
13296 | SYMBOL_LINE (sym) = DW_UNSND (attr); | |
13297 | } | |
cb1df416 | 13298 | |
edb3359d DJ |
13299 | attr = dwarf2_attr (die, |
13300 | inlined_func ? DW_AT_call_file : DW_AT_decl_file, | |
13301 | cu); | |
cb1df416 DJ |
13302 | if (attr) |
13303 | { | |
13304 | int file_index = DW_UNSND (attr); | |
9a619af0 | 13305 | |
cb1df416 DJ |
13306 | if (cu->line_header == NULL |
13307 | || file_index > cu->line_header->num_file_names) | |
13308 | complaint (&symfile_complaints, | |
13309 | _("file index out of range")); | |
1c3d648d | 13310 | else if (file_index > 0) |
cb1df416 DJ |
13311 | { |
13312 | struct file_entry *fe; | |
9a619af0 | 13313 | |
cb1df416 DJ |
13314 | fe = &cu->line_header->file_names[file_index - 1]; |
13315 | SYMBOL_SYMTAB (sym) = fe->symtab; | |
13316 | } | |
13317 | } | |
13318 | ||
c906108c SS |
13319 | switch (die->tag) |
13320 | { | |
13321 | case DW_TAG_label: | |
e142c38c | 13322 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
c906108c SS |
13323 | if (attr) |
13324 | { | |
13325 | SYMBOL_VALUE_ADDRESS (sym) = DW_ADDR (attr) + baseaddr; | |
13326 | } | |
0f5238ed TT |
13327 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_core_addr; |
13328 | SYMBOL_DOMAIN (sym) = LABEL_DOMAIN; | |
c906108c | 13329 | SYMBOL_CLASS (sym) = LOC_LABEL; |
0f5238ed | 13330 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
13331 | break; |
13332 | case DW_TAG_subprogram: | |
13333 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
13334 | finish_block. */ | |
13335 | SYMBOL_CLASS (sym) = LOC_BLOCK; | |
e142c38c | 13336 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
2cfa0c8d JB |
13337 | if ((attr2 && (DW_UNSND (attr2) != 0)) |
13338 | || cu->language == language_ada) | |
c906108c | 13339 | { |
2cfa0c8d JB |
13340 | /* Subprograms marked external are stored as a global symbol. |
13341 | Ada subprograms, whether marked external or not, are always | |
13342 | stored as a global symbol, because we want to be able to | |
13343 | access them globally. For instance, we want to be able | |
13344 | to break on a nested subprogram without having to | |
13345 | specify the context. */ | |
e37fd15a | 13346 | list_to_add = &global_symbols; |
c906108c SS |
13347 | } |
13348 | else | |
13349 | { | |
e37fd15a | 13350 | list_to_add = cu->list_in_scope; |
c906108c SS |
13351 | } |
13352 | break; | |
edb3359d DJ |
13353 | case DW_TAG_inlined_subroutine: |
13354 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
13355 | finish_block. */ | |
13356 | SYMBOL_CLASS (sym) = LOC_BLOCK; | |
13357 | SYMBOL_INLINED (sym) = 1; | |
481860b3 | 13358 | list_to_add = cu->list_in_scope; |
edb3359d | 13359 | break; |
34eaf542 TT |
13360 | case DW_TAG_template_value_param: |
13361 | suppress_add = 1; | |
13362 | /* Fall through. */ | |
72929c62 | 13363 | case DW_TAG_constant: |
c906108c | 13364 | case DW_TAG_variable: |
254e6b9e | 13365 | case DW_TAG_member: |
0963b4bd MS |
13366 | /* Compilation with minimal debug info may result in |
13367 | variables with missing type entries. Change the | |
13368 | misleading `void' type to something sensible. */ | |
c906108c | 13369 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_VOID) |
64c50499 | 13370 | SYMBOL_TYPE (sym) |
46bf5051 | 13371 | = objfile_type (objfile)->nodebug_data_symbol; |
64c50499 | 13372 | |
e142c38c | 13373 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
254e6b9e DE |
13374 | /* In the case of DW_TAG_member, we should only be called for |
13375 | static const members. */ | |
13376 | if (die->tag == DW_TAG_member) | |
13377 | { | |
3863f96c DE |
13378 | /* dwarf2_add_field uses die_is_declaration, |
13379 | so we do the same. */ | |
254e6b9e DE |
13380 | gdb_assert (die_is_declaration (die, cu)); |
13381 | gdb_assert (attr); | |
13382 | } | |
c906108c SS |
13383 | if (attr) |
13384 | { | |
e7c27a73 | 13385 | dwarf2_const_value (attr, sym, cu); |
e142c38c | 13386 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
e37fd15a | 13387 | if (!suppress_add) |
34eaf542 TT |
13388 | { |
13389 | if (attr2 && (DW_UNSND (attr2) != 0)) | |
e37fd15a | 13390 | list_to_add = &global_symbols; |
34eaf542 | 13391 | else |
e37fd15a | 13392 | list_to_add = cu->list_in_scope; |
34eaf542 | 13393 | } |
c906108c SS |
13394 | break; |
13395 | } | |
e142c38c | 13396 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
13397 | if (attr) |
13398 | { | |
e7c27a73 | 13399 | var_decode_location (attr, sym, cu); |
e142c38c | 13400 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
caac4577 JG |
13401 | if (SYMBOL_CLASS (sym) == LOC_STATIC |
13402 | && SYMBOL_VALUE_ADDRESS (sym) == 0 | |
13403 | && !dwarf2_per_objfile->has_section_at_zero) | |
13404 | { | |
13405 | /* When a static variable is eliminated by the linker, | |
13406 | the corresponding debug information is not stripped | |
13407 | out, but the variable address is set to null; | |
13408 | do not add such variables into symbol table. */ | |
13409 | } | |
13410 | else if (attr2 && (DW_UNSND (attr2) != 0)) | |
1c809c68 | 13411 | { |
f55ee35c JK |
13412 | /* Workaround gfortran PR debug/40040 - it uses |
13413 | DW_AT_location for variables in -fPIC libraries which may | |
13414 | get overriden by other libraries/executable and get | |
13415 | a different address. Resolve it by the minimal symbol | |
13416 | which may come from inferior's executable using copy | |
13417 | relocation. Make this workaround only for gfortran as for | |
13418 | other compilers GDB cannot guess the minimal symbol | |
13419 | Fortran mangling kind. */ | |
13420 | if (cu->language == language_fortran && die->parent | |
13421 | && die->parent->tag == DW_TAG_module | |
13422 | && cu->producer | |
13423 | && strncmp (cu->producer, "GNU Fortran ", 12) == 0) | |
13424 | SYMBOL_CLASS (sym) = LOC_UNRESOLVED; | |
13425 | ||
1c809c68 TT |
13426 | /* A variable with DW_AT_external is never static, |
13427 | but it may be block-scoped. */ | |
13428 | list_to_add = (cu->list_in_scope == &file_symbols | |
13429 | ? &global_symbols : cu->list_in_scope); | |
1c809c68 | 13430 | } |
c906108c | 13431 | else |
e37fd15a | 13432 | list_to_add = cu->list_in_scope; |
c906108c SS |
13433 | } |
13434 | else | |
13435 | { | |
13436 | /* We do not know the address of this symbol. | |
c5aa993b JM |
13437 | If it is an external symbol and we have type information |
13438 | for it, enter the symbol as a LOC_UNRESOLVED symbol. | |
13439 | The address of the variable will then be determined from | |
13440 | the minimal symbol table whenever the variable is | |
13441 | referenced. */ | |
e142c38c | 13442 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
c906108c | 13443 | if (attr2 && (DW_UNSND (attr2) != 0) |
e142c38c | 13444 | && dwarf2_attr (die, DW_AT_type, cu) != NULL) |
c906108c | 13445 | { |
0fe7935b DJ |
13446 | /* A variable with DW_AT_external is never static, but it |
13447 | may be block-scoped. */ | |
13448 | list_to_add = (cu->list_in_scope == &file_symbols | |
13449 | ? &global_symbols : cu->list_in_scope); | |
13450 | ||
c906108c | 13451 | SYMBOL_CLASS (sym) = LOC_UNRESOLVED; |
c906108c | 13452 | } |
442ddf59 JK |
13453 | else if (!die_is_declaration (die, cu)) |
13454 | { | |
13455 | /* Use the default LOC_OPTIMIZED_OUT class. */ | |
13456 | gdb_assert (SYMBOL_CLASS (sym) == LOC_OPTIMIZED_OUT); | |
e37fd15a SW |
13457 | if (!suppress_add) |
13458 | list_to_add = cu->list_in_scope; | |
442ddf59 | 13459 | } |
c906108c SS |
13460 | } |
13461 | break; | |
13462 | case DW_TAG_formal_parameter: | |
edb3359d DJ |
13463 | /* If we are inside a function, mark this as an argument. If |
13464 | not, we might be looking at an argument to an inlined function | |
13465 | when we do not have enough information to show inlined frames; | |
13466 | pretend it's a local variable in that case so that the user can | |
13467 | still see it. */ | |
13468 | if (context_stack_depth > 0 | |
13469 | && context_stack[context_stack_depth - 1].name != NULL) | |
13470 | SYMBOL_IS_ARGUMENT (sym) = 1; | |
e142c38c | 13471 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
13472 | if (attr) |
13473 | { | |
e7c27a73 | 13474 | var_decode_location (attr, sym, cu); |
c906108c | 13475 | } |
e142c38c | 13476 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
13477 | if (attr) |
13478 | { | |
e7c27a73 | 13479 | dwarf2_const_value (attr, sym, cu); |
c906108c | 13480 | } |
f346a30d | 13481 | |
e37fd15a | 13482 | list_to_add = cu->list_in_scope; |
c906108c SS |
13483 | break; |
13484 | case DW_TAG_unspecified_parameters: | |
13485 | /* From varargs functions; gdb doesn't seem to have any | |
13486 | interest in this information, so just ignore it for now. | |
13487 | (FIXME?) */ | |
13488 | break; | |
34eaf542 TT |
13489 | case DW_TAG_template_type_param: |
13490 | suppress_add = 1; | |
13491 | /* Fall through. */ | |
c906108c | 13492 | case DW_TAG_class_type: |
680b30c7 | 13493 | case DW_TAG_interface_type: |
c906108c SS |
13494 | case DW_TAG_structure_type: |
13495 | case DW_TAG_union_type: | |
72019c9c | 13496 | case DW_TAG_set_type: |
c906108c SS |
13497 | case DW_TAG_enumeration_type: |
13498 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
176620f1 | 13499 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c906108c | 13500 | |
63d06c5c | 13501 | { |
987504bb | 13502 | /* NOTE: carlton/2003-11-10: C++ and Java class symbols shouldn't |
63d06c5c DC |
13503 | really ever be static objects: otherwise, if you try |
13504 | to, say, break of a class's method and you're in a file | |
13505 | which doesn't mention that class, it won't work unless | |
13506 | the check for all static symbols in lookup_symbol_aux | |
13507 | saves you. See the OtherFileClass tests in | |
13508 | gdb.c++/namespace.exp. */ | |
13509 | ||
e37fd15a | 13510 | if (!suppress_add) |
34eaf542 | 13511 | { |
34eaf542 TT |
13512 | list_to_add = (cu->list_in_scope == &file_symbols |
13513 | && (cu->language == language_cplus | |
13514 | || cu->language == language_java) | |
13515 | ? &global_symbols : cu->list_in_scope); | |
63d06c5c | 13516 | |
64382290 TT |
13517 | /* The semantics of C++ state that "struct foo { |
13518 | ... }" also defines a typedef for "foo". A Java | |
13519 | class declaration also defines a typedef for the | |
13520 | class. */ | |
13521 | if (cu->language == language_cplus | |
13522 | || cu->language == language_java | |
13523 | || cu->language == language_ada) | |
13524 | { | |
13525 | /* The symbol's name is already allocated along | |
13526 | with this objfile, so we don't need to | |
13527 | duplicate it for the type. */ | |
13528 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) | |
13529 | TYPE_NAME (SYMBOL_TYPE (sym)) = SYMBOL_SEARCH_NAME (sym); | |
13530 | } | |
63d06c5c DC |
13531 | } |
13532 | } | |
c906108c SS |
13533 | break; |
13534 | case DW_TAG_typedef: | |
63d06c5c DC |
13535 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; |
13536 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; | |
e37fd15a | 13537 | list_to_add = cu->list_in_scope; |
63d06c5c | 13538 | break; |
c906108c | 13539 | case DW_TAG_base_type: |
a02abb62 | 13540 | case DW_TAG_subrange_type: |
c906108c | 13541 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; |
176620f1 | 13542 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 13543 | list_to_add = cu->list_in_scope; |
c906108c SS |
13544 | break; |
13545 | case DW_TAG_enumerator: | |
e142c38c | 13546 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
13547 | if (attr) |
13548 | { | |
e7c27a73 | 13549 | dwarf2_const_value (attr, sym, cu); |
c906108c | 13550 | } |
63d06c5c DC |
13551 | { |
13552 | /* NOTE: carlton/2003-11-10: See comment above in the | |
13553 | DW_TAG_class_type, etc. block. */ | |
13554 | ||
e142c38c | 13555 | list_to_add = (cu->list_in_scope == &file_symbols |
987504bb JJ |
13556 | && (cu->language == language_cplus |
13557 | || cu->language == language_java) | |
e142c38c | 13558 | ? &global_symbols : cu->list_in_scope); |
63d06c5c | 13559 | } |
c906108c | 13560 | break; |
5c4e30ca DC |
13561 | case DW_TAG_namespace: |
13562 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
e37fd15a | 13563 | list_to_add = &global_symbols; |
5c4e30ca | 13564 | break; |
c906108c SS |
13565 | default: |
13566 | /* Not a tag we recognize. Hopefully we aren't processing | |
13567 | trash data, but since we must specifically ignore things | |
13568 | we don't recognize, there is nothing else we should do at | |
0963b4bd | 13569 | this point. */ |
e2e0b3e5 | 13570 | complaint (&symfile_complaints, _("unsupported tag: '%s'"), |
4d3c2250 | 13571 | dwarf_tag_name (die->tag)); |
c906108c SS |
13572 | break; |
13573 | } | |
df8a16a1 | 13574 | |
e37fd15a SW |
13575 | if (suppress_add) |
13576 | { | |
13577 | sym->hash_next = objfile->template_symbols; | |
13578 | objfile->template_symbols = sym; | |
13579 | list_to_add = NULL; | |
13580 | } | |
13581 | ||
13582 | if (list_to_add != NULL) | |
13583 | add_symbol_to_list (sym, list_to_add); | |
13584 | ||
df8a16a1 DJ |
13585 | /* For the benefit of old versions of GCC, check for anonymous |
13586 | namespaces based on the demangled name. */ | |
13587 | if (!processing_has_namespace_info | |
94af9270 | 13588 | && cu->language == language_cplus) |
a10964d1 | 13589 | cp_scan_for_anonymous_namespaces (sym, objfile); |
c906108c SS |
13590 | } |
13591 | return (sym); | |
13592 | } | |
13593 | ||
34eaf542 TT |
13594 | /* A wrapper for new_symbol_full that always allocates a new symbol. */ |
13595 | ||
13596 | static struct symbol * | |
13597 | new_symbol (struct die_info *die, struct type *type, struct dwarf2_cu *cu) | |
13598 | { | |
13599 | return new_symbol_full (die, type, cu, NULL); | |
13600 | } | |
13601 | ||
98bfdba5 PA |
13602 | /* Given an attr with a DW_FORM_dataN value in host byte order, |
13603 | zero-extend it as appropriate for the symbol's type. The DWARF | |
13604 | standard (v4) is not entirely clear about the meaning of using | |
13605 | DW_FORM_dataN for a constant with a signed type, where the type is | |
13606 | wider than the data. The conclusion of a discussion on the DWARF | |
13607 | list was that this is unspecified. We choose to always zero-extend | |
13608 | because that is the interpretation long in use by GCC. */ | |
c906108c | 13609 | |
98bfdba5 PA |
13610 | static gdb_byte * |
13611 | dwarf2_const_value_data (struct attribute *attr, struct type *type, | |
13612 | const char *name, struct obstack *obstack, | |
12df843f | 13613 | struct dwarf2_cu *cu, LONGEST *value, int bits) |
c906108c | 13614 | { |
e7c27a73 | 13615 | struct objfile *objfile = cu->objfile; |
e17a4113 UW |
13616 | enum bfd_endian byte_order = bfd_big_endian (objfile->obfd) ? |
13617 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE; | |
98bfdba5 PA |
13618 | LONGEST l = DW_UNSND (attr); |
13619 | ||
13620 | if (bits < sizeof (*value) * 8) | |
13621 | { | |
13622 | l &= ((LONGEST) 1 << bits) - 1; | |
13623 | *value = l; | |
13624 | } | |
13625 | else if (bits == sizeof (*value) * 8) | |
13626 | *value = l; | |
13627 | else | |
13628 | { | |
13629 | gdb_byte *bytes = obstack_alloc (obstack, bits / 8); | |
13630 | store_unsigned_integer (bytes, bits / 8, byte_order, l); | |
13631 | return bytes; | |
13632 | } | |
13633 | ||
13634 | return NULL; | |
13635 | } | |
13636 | ||
13637 | /* Read a constant value from an attribute. Either set *VALUE, or if | |
13638 | the value does not fit in *VALUE, set *BYTES - either already | |
13639 | allocated on the objfile obstack, or newly allocated on OBSTACK, | |
13640 | or, set *BATON, if we translated the constant to a location | |
13641 | expression. */ | |
13642 | ||
13643 | static void | |
13644 | dwarf2_const_value_attr (struct attribute *attr, struct type *type, | |
13645 | const char *name, struct obstack *obstack, | |
13646 | struct dwarf2_cu *cu, | |
12df843f | 13647 | LONGEST *value, gdb_byte **bytes, |
98bfdba5 PA |
13648 | struct dwarf2_locexpr_baton **baton) |
13649 | { | |
13650 | struct objfile *objfile = cu->objfile; | |
13651 | struct comp_unit_head *cu_header = &cu->header; | |
c906108c | 13652 | struct dwarf_block *blk; |
98bfdba5 PA |
13653 | enum bfd_endian byte_order = (bfd_big_endian (objfile->obfd) ? |
13654 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); | |
13655 | ||
13656 | *value = 0; | |
13657 | *bytes = NULL; | |
13658 | *baton = NULL; | |
c906108c SS |
13659 | |
13660 | switch (attr->form) | |
13661 | { | |
13662 | case DW_FORM_addr: | |
3019eac3 | 13663 | case DW_FORM_GNU_addr_index: |
ac56253d | 13664 | { |
ac56253d TT |
13665 | gdb_byte *data; |
13666 | ||
98bfdba5 PA |
13667 | if (TYPE_LENGTH (type) != cu_header->addr_size) |
13668 | dwarf2_const_value_length_mismatch_complaint (name, | |
ac56253d | 13669 | cu_header->addr_size, |
98bfdba5 | 13670 | TYPE_LENGTH (type)); |
ac56253d TT |
13671 | /* Symbols of this form are reasonably rare, so we just |
13672 | piggyback on the existing location code rather than writing | |
13673 | a new implementation of symbol_computed_ops. */ | |
98bfdba5 PA |
13674 | *baton = obstack_alloc (&objfile->objfile_obstack, |
13675 | sizeof (struct dwarf2_locexpr_baton)); | |
13676 | (*baton)->per_cu = cu->per_cu; | |
13677 | gdb_assert ((*baton)->per_cu); | |
ac56253d | 13678 | |
98bfdba5 PA |
13679 | (*baton)->size = 2 + cu_header->addr_size; |
13680 | data = obstack_alloc (&objfile->objfile_obstack, (*baton)->size); | |
13681 | (*baton)->data = data; | |
ac56253d TT |
13682 | |
13683 | data[0] = DW_OP_addr; | |
13684 | store_unsigned_integer (&data[1], cu_header->addr_size, | |
13685 | byte_order, DW_ADDR (attr)); | |
13686 | data[cu_header->addr_size + 1] = DW_OP_stack_value; | |
ac56253d | 13687 | } |
c906108c | 13688 | break; |
4ac36638 | 13689 | case DW_FORM_string: |
93b5768b | 13690 | case DW_FORM_strp: |
3019eac3 | 13691 | case DW_FORM_GNU_str_index: |
98bfdba5 PA |
13692 | /* DW_STRING is already allocated on the objfile obstack, point |
13693 | directly to it. */ | |
13694 | *bytes = (gdb_byte *) DW_STRING (attr); | |
93b5768b | 13695 | break; |
c906108c SS |
13696 | case DW_FORM_block1: |
13697 | case DW_FORM_block2: | |
13698 | case DW_FORM_block4: | |
13699 | case DW_FORM_block: | |
2dc7f7b3 | 13700 | case DW_FORM_exprloc: |
c906108c | 13701 | blk = DW_BLOCK (attr); |
98bfdba5 PA |
13702 | if (TYPE_LENGTH (type) != blk->size) |
13703 | dwarf2_const_value_length_mismatch_complaint (name, blk->size, | |
13704 | TYPE_LENGTH (type)); | |
13705 | *bytes = blk->data; | |
c906108c | 13706 | break; |
2df3850c JM |
13707 | |
13708 | /* The DW_AT_const_value attributes are supposed to carry the | |
13709 | symbol's value "represented as it would be on the target | |
13710 | architecture." By the time we get here, it's already been | |
13711 | converted to host endianness, so we just need to sign- or | |
13712 | zero-extend it as appropriate. */ | |
13713 | case DW_FORM_data1: | |
3e43a32a MS |
13714 | *bytes = dwarf2_const_value_data (attr, type, name, |
13715 | obstack, cu, value, 8); | |
2df3850c | 13716 | break; |
c906108c | 13717 | case DW_FORM_data2: |
3e43a32a MS |
13718 | *bytes = dwarf2_const_value_data (attr, type, name, |
13719 | obstack, cu, value, 16); | |
2df3850c | 13720 | break; |
c906108c | 13721 | case DW_FORM_data4: |
3e43a32a MS |
13722 | *bytes = dwarf2_const_value_data (attr, type, name, |
13723 | obstack, cu, value, 32); | |
2df3850c | 13724 | break; |
c906108c | 13725 | case DW_FORM_data8: |
3e43a32a MS |
13726 | *bytes = dwarf2_const_value_data (attr, type, name, |
13727 | obstack, cu, value, 64); | |
2df3850c JM |
13728 | break; |
13729 | ||
c906108c | 13730 | case DW_FORM_sdata: |
98bfdba5 | 13731 | *value = DW_SND (attr); |
2df3850c JM |
13732 | break; |
13733 | ||
c906108c | 13734 | case DW_FORM_udata: |
98bfdba5 | 13735 | *value = DW_UNSND (attr); |
c906108c | 13736 | break; |
2df3850c | 13737 | |
c906108c | 13738 | default: |
4d3c2250 | 13739 | complaint (&symfile_complaints, |
e2e0b3e5 | 13740 | _("unsupported const value attribute form: '%s'"), |
4d3c2250 | 13741 | dwarf_form_name (attr->form)); |
98bfdba5 | 13742 | *value = 0; |
c906108c SS |
13743 | break; |
13744 | } | |
13745 | } | |
13746 | ||
2df3850c | 13747 | |
98bfdba5 PA |
13748 | /* Copy constant value from an attribute to a symbol. */ |
13749 | ||
2df3850c | 13750 | static void |
98bfdba5 PA |
13751 | dwarf2_const_value (struct attribute *attr, struct symbol *sym, |
13752 | struct dwarf2_cu *cu) | |
2df3850c | 13753 | { |
98bfdba5 PA |
13754 | struct objfile *objfile = cu->objfile; |
13755 | struct comp_unit_head *cu_header = &cu->header; | |
12df843f | 13756 | LONGEST value; |
98bfdba5 PA |
13757 | gdb_byte *bytes; |
13758 | struct dwarf2_locexpr_baton *baton; | |
2df3850c | 13759 | |
98bfdba5 PA |
13760 | dwarf2_const_value_attr (attr, SYMBOL_TYPE (sym), |
13761 | SYMBOL_PRINT_NAME (sym), | |
13762 | &objfile->objfile_obstack, cu, | |
13763 | &value, &bytes, &baton); | |
2df3850c | 13764 | |
98bfdba5 PA |
13765 | if (baton != NULL) |
13766 | { | |
13767 | SYMBOL_COMPUTED_OPS (sym) = &dwarf2_locexpr_funcs; | |
13768 | SYMBOL_LOCATION_BATON (sym) = baton; | |
13769 | SYMBOL_CLASS (sym) = LOC_COMPUTED; | |
13770 | } | |
13771 | else if (bytes != NULL) | |
13772 | { | |
13773 | SYMBOL_VALUE_BYTES (sym) = bytes; | |
13774 | SYMBOL_CLASS (sym) = LOC_CONST_BYTES; | |
13775 | } | |
13776 | else | |
13777 | { | |
13778 | SYMBOL_VALUE (sym) = value; | |
13779 | SYMBOL_CLASS (sym) = LOC_CONST; | |
13780 | } | |
2df3850c JM |
13781 | } |
13782 | ||
c906108c SS |
13783 | /* Return the type of the die in question using its DW_AT_type attribute. */ |
13784 | ||
13785 | static struct type * | |
e7c27a73 | 13786 | die_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13787 | { |
c906108c | 13788 | struct attribute *type_attr; |
c906108c | 13789 | |
e142c38c | 13790 | type_attr = dwarf2_attr (die, DW_AT_type, cu); |
c906108c SS |
13791 | if (!type_attr) |
13792 | { | |
13793 | /* A missing DW_AT_type represents a void type. */ | |
46bf5051 | 13794 | return objfile_type (cu->objfile)->builtin_void; |
c906108c | 13795 | } |
348e048f | 13796 | |
673bfd45 | 13797 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
13798 | } |
13799 | ||
b4ba55a1 JB |
13800 | /* True iff CU's producer generates GNAT Ada auxiliary information |
13801 | that allows to find parallel types through that information instead | |
13802 | of having to do expensive parallel lookups by type name. */ | |
13803 | ||
13804 | static int | |
13805 | need_gnat_info (struct dwarf2_cu *cu) | |
13806 | { | |
13807 | /* FIXME: brobecker/2010-10-12: As of now, only the AdaCore version | |
13808 | of GNAT produces this auxiliary information, without any indication | |
13809 | that it is produced. Part of enhancing the FSF version of GNAT | |
13810 | to produce that information will be to put in place an indicator | |
13811 | that we can use in order to determine whether the descriptive type | |
13812 | info is available or not. One suggestion that has been made is | |
13813 | to use a new attribute, attached to the CU die. For now, assume | |
13814 | that the descriptive type info is not available. */ | |
13815 | return 0; | |
13816 | } | |
13817 | ||
b4ba55a1 JB |
13818 | /* Return the auxiliary type of the die in question using its |
13819 | DW_AT_GNAT_descriptive_type attribute. Returns NULL if the | |
13820 | attribute is not present. */ | |
13821 | ||
13822 | static struct type * | |
13823 | die_descriptive_type (struct die_info *die, struct dwarf2_cu *cu) | |
13824 | { | |
b4ba55a1 | 13825 | struct attribute *type_attr; |
b4ba55a1 JB |
13826 | |
13827 | type_attr = dwarf2_attr (die, DW_AT_GNAT_descriptive_type, cu); | |
13828 | if (!type_attr) | |
13829 | return NULL; | |
13830 | ||
673bfd45 | 13831 | return lookup_die_type (die, type_attr, cu); |
b4ba55a1 JB |
13832 | } |
13833 | ||
13834 | /* If DIE has a descriptive_type attribute, then set the TYPE's | |
13835 | descriptive type accordingly. */ | |
13836 | ||
13837 | static void | |
13838 | set_descriptive_type (struct type *type, struct die_info *die, | |
13839 | struct dwarf2_cu *cu) | |
13840 | { | |
13841 | struct type *descriptive_type = die_descriptive_type (die, cu); | |
13842 | ||
13843 | if (descriptive_type) | |
13844 | { | |
13845 | ALLOCATE_GNAT_AUX_TYPE (type); | |
13846 | TYPE_DESCRIPTIVE_TYPE (type) = descriptive_type; | |
13847 | } | |
13848 | } | |
13849 | ||
c906108c SS |
13850 | /* Return the containing type of the die in question using its |
13851 | DW_AT_containing_type attribute. */ | |
13852 | ||
13853 | static struct type * | |
e7c27a73 | 13854 | die_containing_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13855 | { |
c906108c | 13856 | struct attribute *type_attr; |
c906108c | 13857 | |
e142c38c | 13858 | type_attr = dwarf2_attr (die, DW_AT_containing_type, cu); |
33ac96f0 JK |
13859 | if (!type_attr) |
13860 | error (_("Dwarf Error: Problem turning containing type into gdb type " | |
13861 | "[in module %s]"), cu->objfile->name); | |
13862 | ||
673bfd45 | 13863 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
13864 | } |
13865 | ||
673bfd45 DE |
13866 | /* Look up the type of DIE in CU using its type attribute ATTR. |
13867 | If there is no type substitute an error marker. */ | |
13868 | ||
c906108c | 13869 | static struct type * |
673bfd45 DE |
13870 | lookup_die_type (struct die_info *die, struct attribute *attr, |
13871 | struct dwarf2_cu *cu) | |
c906108c | 13872 | { |
bb5ed363 | 13873 | struct objfile *objfile = cu->objfile; |
f792889a DJ |
13874 | struct type *this_type; |
13875 | ||
673bfd45 DE |
13876 | /* First see if we have it cached. */ |
13877 | ||
13878 | if (is_ref_attr (attr)) | |
13879 | { | |
b64f50a1 | 13880 | sect_offset offset = dwarf2_get_ref_die_offset (attr); |
673bfd45 DE |
13881 | |
13882 | this_type = get_die_type_at_offset (offset, cu->per_cu); | |
13883 | } | |
55f1336d | 13884 | else if (attr->form == DW_FORM_ref_sig8) |
673bfd45 DE |
13885 | { |
13886 | struct signatured_type *sig_type = DW_SIGNATURED_TYPE (attr); | |
673bfd45 DE |
13887 | |
13888 | /* sig_type will be NULL if the signatured type is missing from | |
13889 | the debug info. */ | |
13890 | if (sig_type == NULL) | |
13891 | error (_("Dwarf Error: Cannot find signatured DIE referenced from DIE " | |
13892 | "at 0x%x [in module %s]"), | |
b64f50a1 | 13893 | die->offset.sect_off, objfile->name); |
673bfd45 | 13894 | |
3019eac3 DE |
13895 | gdb_assert (sig_type->per_cu.is_debug_types); |
13896 | /* If we haven't filled in type_offset_in_section yet, then we | |
13897 | haven't read the type in yet. */ | |
13898 | this_type = NULL; | |
13899 | if (sig_type->type_offset_in_section.sect_off != 0) | |
13900 | { | |
13901 | this_type = | |
13902 | get_die_type_at_offset (sig_type->type_offset_in_section, | |
13903 | &sig_type->per_cu); | |
13904 | } | |
673bfd45 DE |
13905 | } |
13906 | else | |
13907 | { | |
13908 | dump_die_for_error (die); | |
13909 | error (_("Dwarf Error: Bad type attribute %s [in module %s]"), | |
bb5ed363 | 13910 | dwarf_attr_name (attr->name), objfile->name); |
673bfd45 DE |
13911 | } |
13912 | ||
13913 | /* If not cached we need to read it in. */ | |
13914 | ||
13915 | if (this_type == NULL) | |
13916 | { | |
13917 | struct die_info *type_die; | |
13918 | struct dwarf2_cu *type_cu = cu; | |
13919 | ||
13920 | type_die = follow_die_ref_or_sig (die, attr, &type_cu); | |
3019eac3 DE |
13921 | /* If we found the type now, it's probably because the type came |
13922 | from an inter-CU reference and the type's CU got expanded before | |
13923 | ours. */ | |
13924 | this_type = get_die_type (type_die, type_cu); | |
13925 | if (this_type == NULL) | |
13926 | this_type = read_type_die_1 (type_die, type_cu); | |
673bfd45 DE |
13927 | } |
13928 | ||
13929 | /* If we still don't have a type use an error marker. */ | |
13930 | ||
13931 | if (this_type == NULL) | |
c906108c | 13932 | { |
b00fdb78 TT |
13933 | char *message, *saved; |
13934 | ||
13935 | /* read_type_die already issued a complaint. */ | |
13936 | message = xstrprintf (_("<unknown type in %s, CU 0x%x, DIE 0x%x>"), | |
bb5ed363 | 13937 | objfile->name, |
b64f50a1 JK |
13938 | cu->header.offset.sect_off, |
13939 | die->offset.sect_off); | |
bb5ed363 | 13940 | saved = obstack_copy0 (&objfile->objfile_obstack, |
b00fdb78 TT |
13941 | message, strlen (message)); |
13942 | xfree (message); | |
13943 | ||
bb5ed363 | 13944 | this_type = init_type (TYPE_CODE_ERROR, 0, 0, saved, objfile); |
c906108c | 13945 | } |
673bfd45 | 13946 | |
f792889a | 13947 | return this_type; |
c906108c SS |
13948 | } |
13949 | ||
673bfd45 DE |
13950 | /* Return the type in DIE, CU. |
13951 | Returns NULL for invalid types. | |
13952 | ||
13953 | This first does a lookup in the appropriate type_hash table, | |
13954 | and only reads the die in if necessary. | |
13955 | ||
13956 | NOTE: This can be called when reading in partial or full symbols. */ | |
13957 | ||
f792889a | 13958 | static struct type * |
e7c27a73 | 13959 | read_type_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13960 | { |
f792889a DJ |
13961 | struct type *this_type; |
13962 | ||
13963 | this_type = get_die_type (die, cu); | |
13964 | if (this_type) | |
13965 | return this_type; | |
13966 | ||
673bfd45 DE |
13967 | return read_type_die_1 (die, cu); |
13968 | } | |
13969 | ||
13970 | /* Read the type in DIE, CU. | |
13971 | Returns NULL for invalid types. */ | |
13972 | ||
13973 | static struct type * | |
13974 | read_type_die_1 (struct die_info *die, struct dwarf2_cu *cu) | |
13975 | { | |
13976 | struct type *this_type = NULL; | |
13977 | ||
c906108c SS |
13978 | switch (die->tag) |
13979 | { | |
13980 | case DW_TAG_class_type: | |
680b30c7 | 13981 | case DW_TAG_interface_type: |
c906108c SS |
13982 | case DW_TAG_structure_type: |
13983 | case DW_TAG_union_type: | |
f792889a | 13984 | this_type = read_structure_type (die, cu); |
c906108c SS |
13985 | break; |
13986 | case DW_TAG_enumeration_type: | |
f792889a | 13987 | this_type = read_enumeration_type (die, cu); |
c906108c SS |
13988 | break; |
13989 | case DW_TAG_subprogram: | |
13990 | case DW_TAG_subroutine_type: | |
edb3359d | 13991 | case DW_TAG_inlined_subroutine: |
f792889a | 13992 | this_type = read_subroutine_type (die, cu); |
c906108c SS |
13993 | break; |
13994 | case DW_TAG_array_type: | |
f792889a | 13995 | this_type = read_array_type (die, cu); |
c906108c | 13996 | break; |
72019c9c | 13997 | case DW_TAG_set_type: |
f792889a | 13998 | this_type = read_set_type (die, cu); |
72019c9c | 13999 | break; |
c906108c | 14000 | case DW_TAG_pointer_type: |
f792889a | 14001 | this_type = read_tag_pointer_type (die, cu); |
c906108c SS |
14002 | break; |
14003 | case DW_TAG_ptr_to_member_type: | |
f792889a | 14004 | this_type = read_tag_ptr_to_member_type (die, cu); |
c906108c SS |
14005 | break; |
14006 | case DW_TAG_reference_type: | |
f792889a | 14007 | this_type = read_tag_reference_type (die, cu); |
c906108c SS |
14008 | break; |
14009 | case DW_TAG_const_type: | |
f792889a | 14010 | this_type = read_tag_const_type (die, cu); |
c906108c SS |
14011 | break; |
14012 | case DW_TAG_volatile_type: | |
f792889a | 14013 | this_type = read_tag_volatile_type (die, cu); |
c906108c SS |
14014 | break; |
14015 | case DW_TAG_string_type: | |
f792889a | 14016 | this_type = read_tag_string_type (die, cu); |
c906108c SS |
14017 | break; |
14018 | case DW_TAG_typedef: | |
f792889a | 14019 | this_type = read_typedef (die, cu); |
c906108c | 14020 | break; |
a02abb62 | 14021 | case DW_TAG_subrange_type: |
f792889a | 14022 | this_type = read_subrange_type (die, cu); |
a02abb62 | 14023 | break; |
c906108c | 14024 | case DW_TAG_base_type: |
f792889a | 14025 | this_type = read_base_type (die, cu); |
c906108c | 14026 | break; |
81a17f79 | 14027 | case DW_TAG_unspecified_type: |
f792889a | 14028 | this_type = read_unspecified_type (die, cu); |
81a17f79 | 14029 | break; |
0114d602 DJ |
14030 | case DW_TAG_namespace: |
14031 | this_type = read_namespace_type (die, cu); | |
14032 | break; | |
f55ee35c JK |
14033 | case DW_TAG_module: |
14034 | this_type = read_module_type (die, cu); | |
14035 | break; | |
c906108c | 14036 | default: |
3e43a32a MS |
14037 | complaint (&symfile_complaints, |
14038 | _("unexpected tag in read_type_die: '%s'"), | |
4d3c2250 | 14039 | dwarf_tag_name (die->tag)); |
c906108c SS |
14040 | break; |
14041 | } | |
63d06c5c | 14042 | |
f792889a | 14043 | return this_type; |
63d06c5c DC |
14044 | } |
14045 | ||
abc72ce4 DE |
14046 | /* See if we can figure out if the class lives in a namespace. We do |
14047 | this by looking for a member function; its demangled name will | |
14048 | contain namespace info, if there is any. | |
14049 | Return the computed name or NULL. | |
14050 | Space for the result is allocated on the objfile's obstack. | |
14051 | This is the full-die version of guess_partial_die_structure_name. | |
14052 | In this case we know DIE has no useful parent. */ | |
14053 | ||
14054 | static char * | |
14055 | guess_full_die_structure_name (struct die_info *die, struct dwarf2_cu *cu) | |
14056 | { | |
14057 | struct die_info *spec_die; | |
14058 | struct dwarf2_cu *spec_cu; | |
14059 | struct die_info *child; | |
14060 | ||
14061 | spec_cu = cu; | |
14062 | spec_die = die_specification (die, &spec_cu); | |
14063 | if (spec_die != NULL) | |
14064 | { | |
14065 | die = spec_die; | |
14066 | cu = spec_cu; | |
14067 | } | |
14068 | ||
14069 | for (child = die->child; | |
14070 | child != NULL; | |
14071 | child = child->sibling) | |
14072 | { | |
14073 | if (child->tag == DW_TAG_subprogram) | |
14074 | { | |
14075 | struct attribute *attr; | |
14076 | ||
14077 | attr = dwarf2_attr (child, DW_AT_linkage_name, cu); | |
14078 | if (attr == NULL) | |
14079 | attr = dwarf2_attr (child, DW_AT_MIPS_linkage_name, cu); | |
14080 | if (attr != NULL) | |
14081 | { | |
14082 | char *actual_name | |
14083 | = language_class_name_from_physname (cu->language_defn, | |
14084 | DW_STRING (attr)); | |
14085 | char *name = NULL; | |
14086 | ||
14087 | if (actual_name != NULL) | |
14088 | { | |
14089 | char *die_name = dwarf2_name (die, cu); | |
14090 | ||
14091 | if (die_name != NULL | |
14092 | && strcmp (die_name, actual_name) != 0) | |
14093 | { | |
14094 | /* Strip off the class name from the full name. | |
14095 | We want the prefix. */ | |
14096 | int die_name_len = strlen (die_name); | |
14097 | int actual_name_len = strlen (actual_name); | |
14098 | ||
14099 | /* Test for '::' as a sanity check. */ | |
14100 | if (actual_name_len > die_name_len + 2 | |
3e43a32a MS |
14101 | && actual_name[actual_name_len |
14102 | - die_name_len - 1] == ':') | |
abc72ce4 DE |
14103 | name = |
14104 | obsavestring (actual_name, | |
14105 | actual_name_len - die_name_len - 2, | |
14106 | &cu->objfile->objfile_obstack); | |
14107 | } | |
14108 | } | |
14109 | xfree (actual_name); | |
14110 | return name; | |
14111 | } | |
14112 | } | |
14113 | } | |
14114 | ||
14115 | return NULL; | |
14116 | } | |
14117 | ||
96408a79 SA |
14118 | /* GCC might emit a nameless typedef that has a linkage name. Determine the |
14119 | prefix part in such case. See | |
14120 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
14121 | ||
14122 | static char * | |
14123 | anonymous_struct_prefix (struct die_info *die, struct dwarf2_cu *cu) | |
14124 | { | |
14125 | struct attribute *attr; | |
14126 | char *base; | |
14127 | ||
14128 | if (die->tag != DW_TAG_class_type && die->tag != DW_TAG_interface_type | |
14129 | && die->tag != DW_TAG_structure_type && die->tag != DW_TAG_union_type) | |
14130 | return NULL; | |
14131 | ||
14132 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
14133 | if (attr != NULL && DW_STRING (attr) != NULL) | |
14134 | return NULL; | |
14135 | ||
14136 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
14137 | if (attr == NULL) | |
14138 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
14139 | if (attr == NULL || DW_STRING (attr) == NULL) | |
14140 | return NULL; | |
14141 | ||
14142 | /* dwarf2_name had to be already called. */ | |
14143 | gdb_assert (DW_STRING_IS_CANONICAL (attr)); | |
14144 | ||
14145 | /* Strip the base name, keep any leading namespaces/classes. */ | |
14146 | base = strrchr (DW_STRING (attr), ':'); | |
14147 | if (base == NULL || base == DW_STRING (attr) || base[-1] != ':') | |
14148 | return ""; | |
14149 | ||
14150 | return obsavestring (DW_STRING (attr), &base[-1] - DW_STRING (attr), | |
14151 | &cu->objfile->objfile_obstack); | |
14152 | } | |
14153 | ||
fdde2d81 | 14154 | /* Return the name of the namespace/class that DIE is defined within, |
0114d602 | 14155 | or "" if we can't tell. The caller should not xfree the result. |
fdde2d81 | 14156 | |
0114d602 DJ |
14157 | For example, if we're within the method foo() in the following |
14158 | code: | |
14159 | ||
14160 | namespace N { | |
14161 | class C { | |
14162 | void foo () { | |
14163 | } | |
14164 | }; | |
14165 | } | |
14166 | ||
14167 | then determine_prefix on foo's die will return "N::C". */ | |
fdde2d81 | 14168 | |
0d5cff50 | 14169 | static const char * |
e142c38c | 14170 | determine_prefix (struct die_info *die, struct dwarf2_cu *cu) |
63d06c5c | 14171 | { |
0114d602 DJ |
14172 | struct die_info *parent, *spec_die; |
14173 | struct dwarf2_cu *spec_cu; | |
14174 | struct type *parent_type; | |
96408a79 | 14175 | char *retval; |
63d06c5c | 14176 | |
f55ee35c JK |
14177 | if (cu->language != language_cplus && cu->language != language_java |
14178 | && cu->language != language_fortran) | |
0114d602 DJ |
14179 | return ""; |
14180 | ||
96408a79 SA |
14181 | retval = anonymous_struct_prefix (die, cu); |
14182 | if (retval) | |
14183 | return retval; | |
14184 | ||
0114d602 DJ |
14185 | /* We have to be careful in the presence of DW_AT_specification. |
14186 | For example, with GCC 3.4, given the code | |
14187 | ||
14188 | namespace N { | |
14189 | void foo() { | |
14190 | // Definition of N::foo. | |
14191 | } | |
14192 | } | |
14193 | ||
14194 | then we'll have a tree of DIEs like this: | |
14195 | ||
14196 | 1: DW_TAG_compile_unit | |
14197 | 2: DW_TAG_namespace // N | |
14198 | 3: DW_TAG_subprogram // declaration of N::foo | |
14199 | 4: DW_TAG_subprogram // definition of N::foo | |
14200 | DW_AT_specification // refers to die #3 | |
14201 | ||
14202 | Thus, when processing die #4, we have to pretend that we're in | |
14203 | the context of its DW_AT_specification, namely the contex of die | |
14204 | #3. */ | |
14205 | spec_cu = cu; | |
14206 | spec_die = die_specification (die, &spec_cu); | |
14207 | if (spec_die == NULL) | |
14208 | parent = die->parent; | |
14209 | else | |
63d06c5c | 14210 | { |
0114d602 DJ |
14211 | parent = spec_die->parent; |
14212 | cu = spec_cu; | |
63d06c5c | 14213 | } |
0114d602 DJ |
14214 | |
14215 | if (parent == NULL) | |
14216 | return ""; | |
98bfdba5 PA |
14217 | else if (parent->building_fullname) |
14218 | { | |
14219 | const char *name; | |
14220 | const char *parent_name; | |
14221 | ||
14222 | /* It has been seen on RealView 2.2 built binaries, | |
14223 | DW_TAG_template_type_param types actually _defined_ as | |
14224 | children of the parent class: | |
14225 | ||
14226 | enum E {}; | |
14227 | template class <class Enum> Class{}; | |
14228 | Class<enum E> class_e; | |
14229 | ||
14230 | 1: DW_TAG_class_type (Class) | |
14231 | 2: DW_TAG_enumeration_type (E) | |
14232 | 3: DW_TAG_enumerator (enum1:0) | |
14233 | 3: DW_TAG_enumerator (enum2:1) | |
14234 | ... | |
14235 | 2: DW_TAG_template_type_param | |
14236 | DW_AT_type DW_FORM_ref_udata (E) | |
14237 | ||
14238 | Besides being broken debug info, it can put GDB into an | |
14239 | infinite loop. Consider: | |
14240 | ||
14241 | When we're building the full name for Class<E>, we'll start | |
14242 | at Class, and go look over its template type parameters, | |
14243 | finding E. We'll then try to build the full name of E, and | |
14244 | reach here. We're now trying to build the full name of E, | |
14245 | and look over the parent DIE for containing scope. In the | |
14246 | broken case, if we followed the parent DIE of E, we'd again | |
14247 | find Class, and once again go look at its template type | |
14248 | arguments, etc., etc. Simply don't consider such parent die | |
14249 | as source-level parent of this die (it can't be, the language | |
14250 | doesn't allow it), and break the loop here. */ | |
14251 | name = dwarf2_name (die, cu); | |
14252 | parent_name = dwarf2_name (parent, cu); | |
14253 | complaint (&symfile_complaints, | |
14254 | _("template param type '%s' defined within parent '%s'"), | |
14255 | name ? name : "<unknown>", | |
14256 | parent_name ? parent_name : "<unknown>"); | |
14257 | return ""; | |
14258 | } | |
63d06c5c | 14259 | else |
0114d602 DJ |
14260 | switch (parent->tag) |
14261 | { | |
63d06c5c | 14262 | case DW_TAG_namespace: |
0114d602 | 14263 | parent_type = read_type_die (parent, cu); |
acebe513 UW |
14264 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
14265 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
14266 | Work around this problem here. */ | |
14267 | if (cu->language == language_cplus | |
14268 | && strcmp (TYPE_TAG_NAME (parent_type), "::") == 0) | |
14269 | return ""; | |
0114d602 DJ |
14270 | /* We give a name to even anonymous namespaces. */ |
14271 | return TYPE_TAG_NAME (parent_type); | |
63d06c5c | 14272 | case DW_TAG_class_type: |
680b30c7 | 14273 | case DW_TAG_interface_type: |
63d06c5c | 14274 | case DW_TAG_structure_type: |
0114d602 | 14275 | case DW_TAG_union_type: |
f55ee35c | 14276 | case DW_TAG_module: |
0114d602 DJ |
14277 | parent_type = read_type_die (parent, cu); |
14278 | if (TYPE_TAG_NAME (parent_type) != NULL) | |
14279 | return TYPE_TAG_NAME (parent_type); | |
14280 | else | |
14281 | /* An anonymous structure is only allowed non-static data | |
14282 | members; no typedefs, no member functions, et cetera. | |
14283 | So it does not need a prefix. */ | |
14284 | return ""; | |
abc72ce4 | 14285 | case DW_TAG_compile_unit: |
95554aad | 14286 | case DW_TAG_partial_unit: |
abc72ce4 DE |
14287 | /* gcc-4.5 -gdwarf-4 can drop the enclosing namespace. Cope. */ |
14288 | if (cu->language == language_cplus | |
8b70b953 | 14289 | && !VEC_empty (dwarf2_section_info_def, dwarf2_per_objfile->types) |
abc72ce4 DE |
14290 | && die->child != NULL |
14291 | && (die->tag == DW_TAG_class_type | |
14292 | || die->tag == DW_TAG_structure_type | |
14293 | || die->tag == DW_TAG_union_type)) | |
14294 | { | |
14295 | char *name = guess_full_die_structure_name (die, cu); | |
14296 | if (name != NULL) | |
14297 | return name; | |
14298 | } | |
14299 | return ""; | |
63d06c5c | 14300 | default: |
8176b9b8 | 14301 | return determine_prefix (parent, cu); |
63d06c5c | 14302 | } |
63d06c5c DC |
14303 | } |
14304 | ||
3e43a32a MS |
14305 | /* Return a newly-allocated string formed by concatenating PREFIX and SUFFIX |
14306 | with appropriate separator. If PREFIX or SUFFIX is NULL or empty, then | |
14307 | simply copy the SUFFIX or PREFIX, respectively. If OBS is non-null, perform | |
14308 | an obconcat, otherwise allocate storage for the result. The CU argument is | |
14309 | used to determine the language and hence, the appropriate separator. */ | |
987504bb | 14310 | |
f55ee35c | 14311 | #define MAX_SEP_LEN 7 /* strlen ("__") + strlen ("_MOD_") */ |
63d06c5c DC |
14312 | |
14313 | static char * | |
f55ee35c JK |
14314 | typename_concat (struct obstack *obs, const char *prefix, const char *suffix, |
14315 | int physname, struct dwarf2_cu *cu) | |
63d06c5c | 14316 | { |
f55ee35c | 14317 | const char *lead = ""; |
5c315b68 | 14318 | const char *sep; |
63d06c5c | 14319 | |
3e43a32a MS |
14320 | if (suffix == NULL || suffix[0] == '\0' |
14321 | || prefix == NULL || prefix[0] == '\0') | |
987504bb JJ |
14322 | sep = ""; |
14323 | else if (cu->language == language_java) | |
14324 | sep = "."; | |
f55ee35c JK |
14325 | else if (cu->language == language_fortran && physname) |
14326 | { | |
14327 | /* This is gfortran specific mangling. Normally DW_AT_linkage_name or | |
14328 | DW_AT_MIPS_linkage_name is preferred and used instead. */ | |
14329 | ||
14330 | lead = "__"; | |
14331 | sep = "_MOD_"; | |
14332 | } | |
987504bb JJ |
14333 | else |
14334 | sep = "::"; | |
63d06c5c | 14335 | |
6dd47d34 DE |
14336 | if (prefix == NULL) |
14337 | prefix = ""; | |
14338 | if (suffix == NULL) | |
14339 | suffix = ""; | |
14340 | ||
987504bb JJ |
14341 | if (obs == NULL) |
14342 | { | |
3e43a32a MS |
14343 | char *retval |
14344 | = xmalloc (strlen (prefix) + MAX_SEP_LEN + strlen (suffix) + 1); | |
9a619af0 | 14345 | |
f55ee35c JK |
14346 | strcpy (retval, lead); |
14347 | strcat (retval, prefix); | |
6dd47d34 DE |
14348 | strcat (retval, sep); |
14349 | strcat (retval, suffix); | |
63d06c5c DC |
14350 | return retval; |
14351 | } | |
987504bb JJ |
14352 | else |
14353 | { | |
14354 | /* We have an obstack. */ | |
f55ee35c | 14355 | return obconcat (obs, lead, prefix, sep, suffix, (char *) NULL); |
987504bb | 14356 | } |
63d06c5c DC |
14357 | } |
14358 | ||
c906108c SS |
14359 | /* Return sibling of die, NULL if no sibling. */ |
14360 | ||
f9aca02d | 14361 | static struct die_info * |
fba45db2 | 14362 | sibling_die (struct die_info *die) |
c906108c | 14363 | { |
639d11d3 | 14364 | return die->sibling; |
c906108c SS |
14365 | } |
14366 | ||
71c25dea TT |
14367 | /* Get name of a die, return NULL if not found. */ |
14368 | ||
14369 | static char * | |
14370 | dwarf2_canonicalize_name (char *name, struct dwarf2_cu *cu, | |
14371 | struct obstack *obstack) | |
14372 | { | |
14373 | if (name && cu->language == language_cplus) | |
14374 | { | |
14375 | char *canon_name = cp_canonicalize_string (name); | |
14376 | ||
14377 | if (canon_name != NULL) | |
14378 | { | |
14379 | if (strcmp (canon_name, name) != 0) | |
14380 | name = obsavestring (canon_name, strlen (canon_name), | |
14381 | obstack); | |
14382 | xfree (canon_name); | |
14383 | } | |
14384 | } | |
14385 | ||
14386 | return name; | |
c906108c SS |
14387 | } |
14388 | ||
9219021c DC |
14389 | /* Get name of a die, return NULL if not found. */ |
14390 | ||
14391 | static char * | |
e142c38c | 14392 | dwarf2_name (struct die_info *die, struct dwarf2_cu *cu) |
9219021c DC |
14393 | { |
14394 | struct attribute *attr; | |
14395 | ||
e142c38c | 14396 | attr = dwarf2_attr (die, DW_AT_name, cu); |
53832f31 TT |
14397 | if ((!attr || !DW_STRING (attr)) |
14398 | && die->tag != DW_TAG_class_type | |
14399 | && die->tag != DW_TAG_interface_type | |
14400 | && die->tag != DW_TAG_structure_type | |
14401 | && die->tag != DW_TAG_union_type) | |
71c25dea TT |
14402 | return NULL; |
14403 | ||
14404 | switch (die->tag) | |
14405 | { | |
14406 | case DW_TAG_compile_unit: | |
95554aad | 14407 | case DW_TAG_partial_unit: |
71c25dea TT |
14408 | /* Compilation units have a DW_AT_name that is a filename, not |
14409 | a source language identifier. */ | |
14410 | case DW_TAG_enumeration_type: | |
14411 | case DW_TAG_enumerator: | |
14412 | /* These tags always have simple identifiers already; no need | |
14413 | to canonicalize them. */ | |
14414 | return DW_STRING (attr); | |
907af001 | 14415 | |
418835cc KS |
14416 | case DW_TAG_subprogram: |
14417 | /* Java constructors will all be named "<init>", so return | |
14418 | the class name when we see this special case. */ | |
14419 | if (cu->language == language_java | |
14420 | && DW_STRING (attr) != NULL | |
14421 | && strcmp (DW_STRING (attr), "<init>") == 0) | |
14422 | { | |
14423 | struct dwarf2_cu *spec_cu = cu; | |
14424 | struct die_info *spec_die; | |
14425 | ||
14426 | /* GCJ will output '<init>' for Java constructor names. | |
14427 | For this special case, return the name of the parent class. */ | |
14428 | ||
14429 | /* GCJ may output suprogram DIEs with AT_specification set. | |
14430 | If so, use the name of the specified DIE. */ | |
14431 | spec_die = die_specification (die, &spec_cu); | |
14432 | if (spec_die != NULL) | |
14433 | return dwarf2_name (spec_die, spec_cu); | |
14434 | ||
14435 | do | |
14436 | { | |
14437 | die = die->parent; | |
14438 | if (die->tag == DW_TAG_class_type) | |
14439 | return dwarf2_name (die, cu); | |
14440 | } | |
95554aad TT |
14441 | while (die->tag != DW_TAG_compile_unit |
14442 | && die->tag != DW_TAG_partial_unit); | |
418835cc | 14443 | } |
907af001 UW |
14444 | break; |
14445 | ||
14446 | case DW_TAG_class_type: | |
14447 | case DW_TAG_interface_type: | |
14448 | case DW_TAG_structure_type: | |
14449 | case DW_TAG_union_type: | |
14450 | /* Some GCC versions emit spurious DW_AT_name attributes for unnamed | |
14451 | structures or unions. These were of the form "._%d" in GCC 4.1, | |
14452 | or simply "<anonymous struct>" or "<anonymous union>" in GCC 4.3 | |
14453 | and GCC 4.4. We work around this problem by ignoring these. */ | |
53832f31 TT |
14454 | if (attr && DW_STRING (attr) |
14455 | && (strncmp (DW_STRING (attr), "._", 2) == 0 | |
14456 | || strncmp (DW_STRING (attr), "<anonymous", 10) == 0)) | |
907af001 | 14457 | return NULL; |
53832f31 TT |
14458 | |
14459 | /* GCC might emit a nameless typedef that has a linkage name. See | |
14460 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
14461 | if (!attr || DW_STRING (attr) == NULL) | |
14462 | { | |
df5c6c50 | 14463 | char *demangled = NULL; |
53832f31 TT |
14464 | |
14465 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
14466 | if (attr == NULL) | |
14467 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
14468 | ||
14469 | if (attr == NULL || DW_STRING (attr) == NULL) | |
14470 | return NULL; | |
14471 | ||
df5c6c50 JK |
14472 | /* Avoid demangling DW_STRING (attr) the second time on a second |
14473 | call for the same DIE. */ | |
14474 | if (!DW_STRING_IS_CANONICAL (attr)) | |
14475 | demangled = cplus_demangle (DW_STRING (attr), DMGL_TYPES); | |
53832f31 TT |
14476 | |
14477 | if (demangled) | |
14478 | { | |
96408a79 SA |
14479 | char *base; |
14480 | ||
53832f31 | 14481 | /* FIXME: we already did this for the partial symbol... */ |
96408a79 SA |
14482 | DW_STRING (attr) = obsavestring (demangled, strlen (demangled), |
14483 | &cu->objfile->objfile_obstack); | |
53832f31 TT |
14484 | DW_STRING_IS_CANONICAL (attr) = 1; |
14485 | xfree (demangled); | |
96408a79 SA |
14486 | |
14487 | /* Strip any leading namespaces/classes, keep only the base name. | |
14488 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
14489 | base = strrchr (DW_STRING (attr), ':'); | |
14490 | if (base && base > DW_STRING (attr) && base[-1] == ':') | |
14491 | return &base[1]; | |
14492 | else | |
14493 | return DW_STRING (attr); | |
53832f31 TT |
14494 | } |
14495 | } | |
907af001 UW |
14496 | break; |
14497 | ||
71c25dea | 14498 | default: |
907af001 UW |
14499 | break; |
14500 | } | |
14501 | ||
14502 | if (!DW_STRING_IS_CANONICAL (attr)) | |
14503 | { | |
14504 | DW_STRING (attr) | |
14505 | = dwarf2_canonicalize_name (DW_STRING (attr), cu, | |
14506 | &cu->objfile->objfile_obstack); | |
14507 | DW_STRING_IS_CANONICAL (attr) = 1; | |
71c25dea | 14508 | } |
907af001 | 14509 | return DW_STRING (attr); |
9219021c DC |
14510 | } |
14511 | ||
14512 | /* Return the die that this die in an extension of, or NULL if there | |
f2f0e013 DJ |
14513 | is none. *EXT_CU is the CU containing DIE on input, and the CU |
14514 | containing the return value on output. */ | |
9219021c DC |
14515 | |
14516 | static struct die_info * | |
f2f0e013 | 14517 | dwarf2_extension (struct die_info *die, struct dwarf2_cu **ext_cu) |
9219021c DC |
14518 | { |
14519 | struct attribute *attr; | |
9219021c | 14520 | |
f2f0e013 | 14521 | attr = dwarf2_attr (die, DW_AT_extension, *ext_cu); |
9219021c DC |
14522 | if (attr == NULL) |
14523 | return NULL; | |
14524 | ||
f2f0e013 | 14525 | return follow_die_ref (die, attr, ext_cu); |
9219021c DC |
14526 | } |
14527 | ||
c906108c SS |
14528 | /* Convert a DIE tag into its string name. */ |
14529 | ||
f39c6ffd | 14530 | static const char * |
aa1ee363 | 14531 | dwarf_tag_name (unsigned tag) |
c906108c | 14532 | { |
f39c6ffd TT |
14533 | const char *name = get_DW_TAG_name (tag); |
14534 | ||
14535 | if (name == NULL) | |
14536 | return "DW_TAG_<unknown>"; | |
14537 | ||
14538 | return name; | |
c906108c SS |
14539 | } |
14540 | ||
14541 | /* Convert a DWARF attribute code into its string name. */ | |
14542 | ||
f39c6ffd | 14543 | static const char * |
aa1ee363 | 14544 | dwarf_attr_name (unsigned attr) |
c906108c | 14545 | { |
f39c6ffd TT |
14546 | const char *name; |
14547 | ||
c764a876 | 14548 | #ifdef MIPS /* collides with DW_AT_HP_block_index */ |
f39c6ffd TT |
14549 | if (attr == DW_AT_MIPS_fde) |
14550 | return "DW_AT_MIPS_fde"; | |
14551 | #else | |
14552 | if (attr == DW_AT_HP_block_index) | |
14553 | return "DW_AT_HP_block_index"; | |
c764a876 | 14554 | #endif |
f39c6ffd TT |
14555 | |
14556 | name = get_DW_AT_name (attr); | |
14557 | ||
14558 | if (name == NULL) | |
14559 | return "DW_AT_<unknown>"; | |
14560 | ||
14561 | return name; | |
c906108c SS |
14562 | } |
14563 | ||
14564 | /* Convert a DWARF value form code into its string name. */ | |
14565 | ||
f39c6ffd | 14566 | static const char * |
aa1ee363 | 14567 | dwarf_form_name (unsigned form) |
c906108c | 14568 | { |
f39c6ffd TT |
14569 | const char *name = get_DW_FORM_name (form); |
14570 | ||
14571 | if (name == NULL) | |
14572 | return "DW_FORM_<unknown>"; | |
14573 | ||
14574 | return name; | |
c906108c SS |
14575 | } |
14576 | ||
14577 | static char * | |
fba45db2 | 14578 | dwarf_bool_name (unsigned mybool) |
c906108c SS |
14579 | { |
14580 | if (mybool) | |
14581 | return "TRUE"; | |
14582 | else | |
14583 | return "FALSE"; | |
14584 | } | |
14585 | ||
14586 | /* Convert a DWARF type code into its string name. */ | |
14587 | ||
f39c6ffd | 14588 | static const char * |
aa1ee363 | 14589 | dwarf_type_encoding_name (unsigned enc) |
c906108c | 14590 | { |
f39c6ffd | 14591 | const char *name = get_DW_ATE_name (enc); |
c906108c | 14592 | |
f39c6ffd TT |
14593 | if (name == NULL) |
14594 | return "DW_ATE_<unknown>"; | |
c906108c | 14595 | |
f39c6ffd | 14596 | return name; |
c906108c | 14597 | } |
c906108c | 14598 | |
f9aca02d | 14599 | static void |
d97bc12b | 14600 | dump_die_shallow (struct ui_file *f, int indent, struct die_info *die) |
c906108c SS |
14601 | { |
14602 | unsigned int i; | |
14603 | ||
d97bc12b DE |
14604 | print_spaces (indent, f); |
14605 | fprintf_unfiltered (f, "Die: %s (abbrev %d, offset 0x%x)\n", | |
b64f50a1 | 14606 | dwarf_tag_name (die->tag), die->abbrev, die->offset.sect_off); |
d97bc12b DE |
14607 | |
14608 | if (die->parent != NULL) | |
14609 | { | |
14610 | print_spaces (indent, f); | |
14611 | fprintf_unfiltered (f, " parent at offset: 0x%x\n", | |
b64f50a1 | 14612 | die->parent->offset.sect_off); |
d97bc12b DE |
14613 | } |
14614 | ||
14615 | print_spaces (indent, f); | |
14616 | fprintf_unfiltered (f, " has children: %s\n", | |
639d11d3 | 14617 | dwarf_bool_name (die->child != NULL)); |
c906108c | 14618 | |
d97bc12b DE |
14619 | print_spaces (indent, f); |
14620 | fprintf_unfiltered (f, " attributes:\n"); | |
14621 | ||
c906108c SS |
14622 | for (i = 0; i < die->num_attrs; ++i) |
14623 | { | |
d97bc12b DE |
14624 | print_spaces (indent, f); |
14625 | fprintf_unfiltered (f, " %s (%s) ", | |
c906108c SS |
14626 | dwarf_attr_name (die->attrs[i].name), |
14627 | dwarf_form_name (die->attrs[i].form)); | |
d97bc12b | 14628 | |
c906108c SS |
14629 | switch (die->attrs[i].form) |
14630 | { | |
c906108c | 14631 | case DW_FORM_addr: |
3019eac3 | 14632 | case DW_FORM_GNU_addr_index: |
d97bc12b | 14633 | fprintf_unfiltered (f, "address: "); |
5af949e3 | 14634 | fputs_filtered (hex_string (DW_ADDR (&die->attrs[i])), f); |
c906108c SS |
14635 | break; |
14636 | case DW_FORM_block2: | |
14637 | case DW_FORM_block4: | |
14638 | case DW_FORM_block: | |
14639 | case DW_FORM_block1: | |
3e43a32a MS |
14640 | fprintf_unfiltered (f, "block: size %d", |
14641 | DW_BLOCK (&die->attrs[i])->size); | |
c906108c | 14642 | break; |
2dc7f7b3 TT |
14643 | case DW_FORM_exprloc: |
14644 | fprintf_unfiltered (f, "expression: size %u", | |
14645 | DW_BLOCK (&die->attrs[i])->size); | |
14646 | break; | |
4568ecf9 DE |
14647 | case DW_FORM_ref_addr: |
14648 | fprintf_unfiltered (f, "ref address: "); | |
14649 | fputs_filtered (hex_string (DW_UNSND (&die->attrs[i])), f); | |
14650 | break; | |
10b3939b DJ |
14651 | case DW_FORM_ref1: |
14652 | case DW_FORM_ref2: | |
14653 | case DW_FORM_ref4: | |
4568ecf9 DE |
14654 | case DW_FORM_ref8: |
14655 | case DW_FORM_ref_udata: | |
d97bc12b | 14656 | fprintf_unfiltered (f, "constant ref: 0x%lx (adjusted)", |
4568ecf9 | 14657 | (long) (DW_UNSND (&die->attrs[i]))); |
10b3939b | 14658 | break; |
c906108c SS |
14659 | case DW_FORM_data1: |
14660 | case DW_FORM_data2: | |
14661 | case DW_FORM_data4: | |
ce5d95e1 | 14662 | case DW_FORM_data8: |
c906108c SS |
14663 | case DW_FORM_udata: |
14664 | case DW_FORM_sdata: | |
43bbcdc2 PH |
14665 | fprintf_unfiltered (f, "constant: %s", |
14666 | pulongest (DW_UNSND (&die->attrs[i]))); | |
c906108c | 14667 | break; |
2dc7f7b3 TT |
14668 | case DW_FORM_sec_offset: |
14669 | fprintf_unfiltered (f, "section offset: %s", | |
14670 | pulongest (DW_UNSND (&die->attrs[i]))); | |
14671 | break; | |
55f1336d | 14672 | case DW_FORM_ref_sig8: |
348e048f DE |
14673 | if (DW_SIGNATURED_TYPE (&die->attrs[i]) != NULL) |
14674 | fprintf_unfiltered (f, "signatured type, offset: 0x%x", | |
b64f50a1 | 14675 | DW_SIGNATURED_TYPE (&die->attrs[i])->per_cu.offset.sect_off); |
348e048f DE |
14676 | else |
14677 | fprintf_unfiltered (f, "signatured type, offset: unknown"); | |
14678 | break; | |
c906108c | 14679 | case DW_FORM_string: |
4bdf3d34 | 14680 | case DW_FORM_strp: |
3019eac3 | 14681 | case DW_FORM_GNU_str_index: |
8285870a | 14682 | fprintf_unfiltered (f, "string: \"%s\" (%s canonicalized)", |
c906108c | 14683 | DW_STRING (&die->attrs[i]) |
8285870a JK |
14684 | ? DW_STRING (&die->attrs[i]) : "", |
14685 | DW_STRING_IS_CANONICAL (&die->attrs[i]) ? "is" : "not"); | |
c906108c SS |
14686 | break; |
14687 | case DW_FORM_flag: | |
14688 | if (DW_UNSND (&die->attrs[i])) | |
d97bc12b | 14689 | fprintf_unfiltered (f, "flag: TRUE"); |
c906108c | 14690 | else |
d97bc12b | 14691 | fprintf_unfiltered (f, "flag: FALSE"); |
c906108c | 14692 | break; |
2dc7f7b3 TT |
14693 | case DW_FORM_flag_present: |
14694 | fprintf_unfiltered (f, "flag: TRUE"); | |
14695 | break; | |
a8329558 | 14696 | case DW_FORM_indirect: |
0963b4bd MS |
14697 | /* The reader will have reduced the indirect form to |
14698 | the "base form" so this form should not occur. */ | |
3e43a32a MS |
14699 | fprintf_unfiltered (f, |
14700 | "unexpected attribute form: DW_FORM_indirect"); | |
a8329558 | 14701 | break; |
c906108c | 14702 | default: |
d97bc12b | 14703 | fprintf_unfiltered (f, "unsupported attribute form: %d.", |
c5aa993b | 14704 | die->attrs[i].form); |
d97bc12b | 14705 | break; |
c906108c | 14706 | } |
d97bc12b | 14707 | fprintf_unfiltered (f, "\n"); |
c906108c SS |
14708 | } |
14709 | } | |
14710 | ||
f9aca02d | 14711 | static void |
d97bc12b | 14712 | dump_die_for_error (struct die_info *die) |
c906108c | 14713 | { |
d97bc12b DE |
14714 | dump_die_shallow (gdb_stderr, 0, die); |
14715 | } | |
14716 | ||
14717 | static void | |
14718 | dump_die_1 (struct ui_file *f, int level, int max_level, struct die_info *die) | |
14719 | { | |
14720 | int indent = level * 4; | |
14721 | ||
14722 | gdb_assert (die != NULL); | |
14723 | ||
14724 | if (level >= max_level) | |
14725 | return; | |
14726 | ||
14727 | dump_die_shallow (f, indent, die); | |
14728 | ||
14729 | if (die->child != NULL) | |
c906108c | 14730 | { |
d97bc12b DE |
14731 | print_spaces (indent, f); |
14732 | fprintf_unfiltered (f, " Children:"); | |
14733 | if (level + 1 < max_level) | |
14734 | { | |
14735 | fprintf_unfiltered (f, "\n"); | |
14736 | dump_die_1 (f, level + 1, max_level, die->child); | |
14737 | } | |
14738 | else | |
14739 | { | |
3e43a32a MS |
14740 | fprintf_unfiltered (f, |
14741 | " [not printed, max nesting level reached]\n"); | |
d97bc12b DE |
14742 | } |
14743 | } | |
14744 | ||
14745 | if (die->sibling != NULL && level > 0) | |
14746 | { | |
14747 | dump_die_1 (f, level, max_level, die->sibling); | |
c906108c SS |
14748 | } |
14749 | } | |
14750 | ||
d97bc12b DE |
14751 | /* This is called from the pdie macro in gdbinit.in. |
14752 | It's not static so gcc will keep a copy callable from gdb. */ | |
14753 | ||
14754 | void | |
14755 | dump_die (struct die_info *die, int max_level) | |
14756 | { | |
14757 | dump_die_1 (gdb_stdlog, 0, max_level, die); | |
14758 | } | |
14759 | ||
f9aca02d | 14760 | static void |
51545339 | 14761 | store_in_ref_table (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 14762 | { |
51545339 | 14763 | void **slot; |
c906108c | 14764 | |
b64f50a1 JK |
14765 | slot = htab_find_slot_with_hash (cu->die_hash, die, die->offset.sect_off, |
14766 | INSERT); | |
51545339 DJ |
14767 | |
14768 | *slot = die; | |
c906108c SS |
14769 | } |
14770 | ||
b64f50a1 JK |
14771 | /* DW_ADDR is always stored already as sect_offset; despite for the forms |
14772 | besides DW_FORM_ref_addr it is stored as cu_offset in the DWARF file. */ | |
14773 | ||
93311388 DE |
14774 | static int |
14775 | is_ref_attr (struct attribute *attr) | |
c906108c | 14776 | { |
c906108c SS |
14777 | switch (attr->form) |
14778 | { | |
14779 | case DW_FORM_ref_addr: | |
c906108c SS |
14780 | case DW_FORM_ref1: |
14781 | case DW_FORM_ref2: | |
14782 | case DW_FORM_ref4: | |
613e1657 | 14783 | case DW_FORM_ref8: |
c906108c | 14784 | case DW_FORM_ref_udata: |
93311388 | 14785 | return 1; |
c906108c | 14786 | default: |
93311388 | 14787 | return 0; |
c906108c | 14788 | } |
93311388 DE |
14789 | } |
14790 | ||
b64f50a1 JK |
14791 | /* Return DIE offset of ATTR. Return 0 with complaint if ATTR is not of the |
14792 | required kind. */ | |
14793 | ||
14794 | static sect_offset | |
93311388 DE |
14795 | dwarf2_get_ref_die_offset (struct attribute *attr) |
14796 | { | |
4568ecf9 | 14797 | sect_offset retval = { DW_UNSND (attr) }; |
b64f50a1 | 14798 | |
93311388 | 14799 | if (is_ref_attr (attr)) |
b64f50a1 | 14800 | return retval; |
93311388 | 14801 | |
b64f50a1 | 14802 | retval.sect_off = 0; |
93311388 DE |
14803 | complaint (&symfile_complaints, |
14804 | _("unsupported die ref attribute form: '%s'"), | |
14805 | dwarf_form_name (attr->form)); | |
b64f50a1 | 14806 | return retval; |
c906108c SS |
14807 | } |
14808 | ||
43bbcdc2 PH |
14809 | /* Return the constant value held by ATTR. Return DEFAULT_VALUE if |
14810 | * the value held by the attribute is not constant. */ | |
a02abb62 | 14811 | |
43bbcdc2 | 14812 | static LONGEST |
a02abb62 JB |
14813 | dwarf2_get_attr_constant_value (struct attribute *attr, int default_value) |
14814 | { | |
14815 | if (attr->form == DW_FORM_sdata) | |
14816 | return DW_SND (attr); | |
14817 | else if (attr->form == DW_FORM_udata | |
14818 | || attr->form == DW_FORM_data1 | |
14819 | || attr->form == DW_FORM_data2 | |
14820 | || attr->form == DW_FORM_data4 | |
14821 | || attr->form == DW_FORM_data8) | |
14822 | return DW_UNSND (attr); | |
14823 | else | |
14824 | { | |
3e43a32a MS |
14825 | complaint (&symfile_complaints, |
14826 | _("Attribute value is not a constant (%s)"), | |
a02abb62 JB |
14827 | dwarf_form_name (attr->form)); |
14828 | return default_value; | |
14829 | } | |
14830 | } | |
14831 | ||
03dd20cc | 14832 | /* THIS_CU has a reference to PER_CU. If necessary, load the new compilation |
348e048f DE |
14833 | unit and add it to our queue. |
14834 | The result is non-zero if PER_CU was queued, otherwise the result is zero | |
14835 | meaning either PER_CU is already queued or it is already loaded. */ | |
03dd20cc | 14836 | |
348e048f | 14837 | static int |
03dd20cc | 14838 | maybe_queue_comp_unit (struct dwarf2_cu *this_cu, |
95554aad TT |
14839 | struct dwarf2_per_cu_data *per_cu, |
14840 | enum language pretend_language) | |
03dd20cc | 14841 | { |
98bfdba5 PA |
14842 | /* We may arrive here during partial symbol reading, if we need full |
14843 | DIEs to process an unusual case (e.g. template arguments). Do | |
14844 | not queue PER_CU, just tell our caller to load its DIEs. */ | |
14845 | if (dwarf2_per_objfile->reading_partial_symbols) | |
14846 | { | |
14847 | if (per_cu->cu == NULL || per_cu->cu->dies == NULL) | |
14848 | return 1; | |
14849 | return 0; | |
14850 | } | |
14851 | ||
03dd20cc DJ |
14852 | /* Mark the dependence relation so that we don't flush PER_CU |
14853 | too early. */ | |
14854 | dwarf2_add_dependence (this_cu, per_cu); | |
14855 | ||
14856 | /* If it's already on the queue, we have nothing to do. */ | |
14857 | if (per_cu->queued) | |
348e048f | 14858 | return 0; |
03dd20cc DJ |
14859 | |
14860 | /* If the compilation unit is already loaded, just mark it as | |
14861 | used. */ | |
14862 | if (per_cu->cu != NULL) | |
14863 | { | |
14864 | per_cu->cu->last_used = 0; | |
348e048f | 14865 | return 0; |
03dd20cc DJ |
14866 | } |
14867 | ||
14868 | /* Add it to the queue. */ | |
95554aad | 14869 | queue_comp_unit (per_cu, pretend_language); |
348e048f DE |
14870 | |
14871 | return 1; | |
14872 | } | |
14873 | ||
14874 | /* Follow reference or signature attribute ATTR of SRC_DIE. | |
14875 | On entry *REF_CU is the CU of SRC_DIE. | |
14876 | On exit *REF_CU is the CU of the result. */ | |
14877 | ||
14878 | static struct die_info * | |
14879 | follow_die_ref_or_sig (struct die_info *src_die, struct attribute *attr, | |
14880 | struct dwarf2_cu **ref_cu) | |
14881 | { | |
14882 | struct die_info *die; | |
14883 | ||
14884 | if (is_ref_attr (attr)) | |
14885 | die = follow_die_ref (src_die, attr, ref_cu); | |
55f1336d | 14886 | else if (attr->form == DW_FORM_ref_sig8) |
348e048f DE |
14887 | die = follow_die_sig (src_die, attr, ref_cu); |
14888 | else | |
14889 | { | |
14890 | dump_die_for_error (src_die); | |
14891 | error (_("Dwarf Error: Expected reference attribute [in module %s]"), | |
14892 | (*ref_cu)->objfile->name); | |
14893 | } | |
14894 | ||
14895 | return die; | |
03dd20cc DJ |
14896 | } |
14897 | ||
5c631832 | 14898 | /* Follow reference OFFSET. |
673bfd45 DE |
14899 | On entry *REF_CU is the CU of the source die referencing OFFSET. |
14900 | On exit *REF_CU is the CU of the result. | |
14901 | Returns NULL if OFFSET is invalid. */ | |
f504f079 | 14902 | |
f9aca02d | 14903 | static struct die_info * |
b64f50a1 | 14904 | follow_die_offset (sect_offset offset, struct dwarf2_cu **ref_cu) |
c906108c | 14905 | { |
10b3939b | 14906 | struct die_info temp_die; |
f2f0e013 | 14907 | struct dwarf2_cu *target_cu, *cu = *ref_cu; |
10b3939b | 14908 | |
348e048f DE |
14909 | gdb_assert (cu->per_cu != NULL); |
14910 | ||
98bfdba5 PA |
14911 | target_cu = cu; |
14912 | ||
3019eac3 | 14913 | if (cu->per_cu->is_debug_types) |
348e048f DE |
14914 | { |
14915 | /* .debug_types CUs cannot reference anything outside their CU. | |
14916 | If they need to, they have to reference a signatured type via | |
55f1336d | 14917 | DW_FORM_ref_sig8. */ |
348e048f | 14918 | if (! offset_in_cu_p (&cu->header, offset)) |
5c631832 | 14919 | return NULL; |
348e048f DE |
14920 | } |
14921 | else if (! offset_in_cu_p (&cu->header, offset)) | |
10b3939b DJ |
14922 | { |
14923 | struct dwarf2_per_cu_data *per_cu; | |
9a619af0 | 14924 | |
45452591 | 14925 | per_cu = dwarf2_find_containing_comp_unit (offset, cu->objfile); |
03dd20cc DJ |
14926 | |
14927 | /* If necessary, add it to the queue and load its DIEs. */ | |
95554aad TT |
14928 | if (maybe_queue_comp_unit (cu, per_cu, cu->language)) |
14929 | load_full_comp_unit (per_cu, cu->language); | |
03dd20cc | 14930 | |
10b3939b DJ |
14931 | target_cu = per_cu->cu; |
14932 | } | |
98bfdba5 PA |
14933 | else if (cu->dies == NULL) |
14934 | { | |
14935 | /* We're loading full DIEs during partial symbol reading. */ | |
14936 | gdb_assert (dwarf2_per_objfile->reading_partial_symbols); | |
95554aad | 14937 | load_full_comp_unit (cu->per_cu, language_minimal); |
98bfdba5 | 14938 | } |
c906108c | 14939 | |
f2f0e013 | 14940 | *ref_cu = target_cu; |
51545339 | 14941 | temp_die.offset = offset; |
b64f50a1 | 14942 | return htab_find_with_hash (target_cu->die_hash, &temp_die, offset.sect_off); |
5c631832 | 14943 | } |
10b3939b | 14944 | |
5c631832 JK |
14945 | /* Follow reference attribute ATTR of SRC_DIE. |
14946 | On entry *REF_CU is the CU of SRC_DIE. | |
14947 | On exit *REF_CU is the CU of the result. */ | |
14948 | ||
14949 | static struct die_info * | |
14950 | follow_die_ref (struct die_info *src_die, struct attribute *attr, | |
14951 | struct dwarf2_cu **ref_cu) | |
14952 | { | |
b64f50a1 | 14953 | sect_offset offset = dwarf2_get_ref_die_offset (attr); |
5c631832 JK |
14954 | struct dwarf2_cu *cu = *ref_cu; |
14955 | struct die_info *die; | |
14956 | ||
14957 | die = follow_die_offset (offset, ref_cu); | |
14958 | if (!die) | |
14959 | error (_("Dwarf Error: Cannot find DIE at 0x%x referenced from DIE " | |
14960 | "at 0x%x [in module %s]"), | |
b64f50a1 | 14961 | offset.sect_off, src_die->offset.sect_off, cu->objfile->name); |
348e048f | 14962 | |
5c631832 JK |
14963 | return die; |
14964 | } | |
14965 | ||
d83e736b JK |
14966 | /* Return DWARF block referenced by DW_AT_location of DIE at OFFSET at PER_CU. |
14967 | Returned value is intended for DW_OP_call*. Returned | |
14968 | dwarf2_locexpr_baton->data has lifetime of PER_CU->OBJFILE. */ | |
5c631832 JK |
14969 | |
14970 | struct dwarf2_locexpr_baton | |
b64f50a1 | 14971 | dwarf2_fetch_die_location_block (cu_offset offset_in_cu, |
8cf6f0b1 TT |
14972 | struct dwarf2_per_cu_data *per_cu, |
14973 | CORE_ADDR (*get_frame_pc) (void *baton), | |
14974 | void *baton) | |
5c631832 | 14975 | { |
b64f50a1 | 14976 | sect_offset offset = { per_cu->offset.sect_off + offset_in_cu.cu_off }; |
918dd910 | 14977 | struct dwarf2_cu *cu; |
5c631832 JK |
14978 | struct die_info *die; |
14979 | struct attribute *attr; | |
14980 | struct dwarf2_locexpr_baton retval; | |
14981 | ||
8cf6f0b1 TT |
14982 | dw2_setup (per_cu->objfile); |
14983 | ||
918dd910 JK |
14984 | if (per_cu->cu == NULL) |
14985 | load_cu (per_cu); | |
14986 | cu = per_cu->cu; | |
14987 | ||
5c631832 JK |
14988 | die = follow_die_offset (offset, &cu); |
14989 | if (!die) | |
14990 | error (_("Dwarf Error: Cannot find DIE at 0x%x referenced in module %s"), | |
b64f50a1 | 14991 | offset.sect_off, per_cu->objfile->name); |
5c631832 JK |
14992 | |
14993 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
14994 | if (!attr) | |
14995 | { | |
e103e986 JK |
14996 | /* DWARF: "If there is no such attribute, then there is no effect.". |
14997 | DATA is ignored if SIZE is 0. */ | |
5c631832 | 14998 | |
e103e986 | 14999 | retval.data = NULL; |
5c631832 JK |
15000 | retval.size = 0; |
15001 | } | |
8cf6f0b1 TT |
15002 | else if (attr_form_is_section_offset (attr)) |
15003 | { | |
15004 | struct dwarf2_loclist_baton loclist_baton; | |
15005 | CORE_ADDR pc = (*get_frame_pc) (baton); | |
15006 | size_t size; | |
15007 | ||
15008 | fill_in_loclist_baton (cu, &loclist_baton, attr); | |
15009 | ||
15010 | retval.data = dwarf2_find_location_expression (&loclist_baton, | |
15011 | &size, pc); | |
15012 | retval.size = size; | |
15013 | } | |
5c631832 JK |
15014 | else |
15015 | { | |
15016 | if (!attr_form_is_block (attr)) | |
15017 | error (_("Dwarf Error: DIE at 0x%x referenced in module %s " | |
15018 | "is neither DW_FORM_block* nor DW_FORM_exprloc"), | |
b64f50a1 | 15019 | offset.sect_off, per_cu->objfile->name); |
5c631832 JK |
15020 | |
15021 | retval.data = DW_BLOCK (attr)->data; | |
15022 | retval.size = DW_BLOCK (attr)->size; | |
15023 | } | |
15024 | retval.per_cu = cu->per_cu; | |
918dd910 | 15025 | |
918dd910 JK |
15026 | age_cached_comp_units (); |
15027 | ||
5c631832 | 15028 | return retval; |
348e048f DE |
15029 | } |
15030 | ||
8a9b8146 TT |
15031 | /* Return the type of the DIE at DIE_OFFSET in the CU named by |
15032 | PER_CU. */ | |
15033 | ||
15034 | struct type * | |
b64f50a1 | 15035 | dwarf2_get_die_type (cu_offset die_offset, |
8a9b8146 TT |
15036 | struct dwarf2_per_cu_data *per_cu) |
15037 | { | |
b64f50a1 JK |
15038 | sect_offset die_offset_sect; |
15039 | ||
8a9b8146 | 15040 | dw2_setup (per_cu->objfile); |
b64f50a1 JK |
15041 | |
15042 | die_offset_sect.sect_off = per_cu->offset.sect_off + die_offset.cu_off; | |
15043 | return get_die_type_at_offset (die_offset_sect, per_cu); | |
8a9b8146 TT |
15044 | } |
15045 | ||
348e048f DE |
15046 | /* Follow the signature attribute ATTR in SRC_DIE. |
15047 | On entry *REF_CU is the CU of SRC_DIE. | |
15048 | On exit *REF_CU is the CU of the result. */ | |
15049 | ||
15050 | static struct die_info * | |
15051 | follow_die_sig (struct die_info *src_die, struct attribute *attr, | |
15052 | struct dwarf2_cu **ref_cu) | |
15053 | { | |
15054 | struct objfile *objfile = (*ref_cu)->objfile; | |
15055 | struct die_info temp_die; | |
15056 | struct signatured_type *sig_type = DW_SIGNATURED_TYPE (attr); | |
15057 | struct dwarf2_cu *sig_cu; | |
15058 | struct die_info *die; | |
15059 | ||
15060 | /* sig_type will be NULL if the signatured type is missing from | |
15061 | the debug info. */ | |
15062 | if (sig_type == NULL) | |
15063 | error (_("Dwarf Error: Cannot find signatured DIE referenced from DIE " | |
15064 | "at 0x%x [in module %s]"), | |
b64f50a1 | 15065 | src_die->offset.sect_off, objfile->name); |
348e048f DE |
15066 | |
15067 | /* If necessary, add it to the queue and load its DIEs. */ | |
15068 | ||
95554aad | 15069 | if (maybe_queue_comp_unit (*ref_cu, &sig_type->per_cu, language_minimal)) |
a0f42c21 | 15070 | read_signatured_type (sig_type); |
348e048f DE |
15071 | |
15072 | gdb_assert (sig_type->per_cu.cu != NULL); | |
15073 | ||
15074 | sig_cu = sig_type->per_cu.cu; | |
3019eac3 DE |
15075 | gdb_assert (sig_type->type_offset_in_section.sect_off != 0); |
15076 | temp_die.offset = sig_type->type_offset_in_section; | |
b64f50a1 JK |
15077 | die = htab_find_with_hash (sig_cu->die_hash, &temp_die, |
15078 | temp_die.offset.sect_off); | |
348e048f DE |
15079 | if (die) |
15080 | { | |
15081 | *ref_cu = sig_cu; | |
15082 | return die; | |
15083 | } | |
15084 | ||
3e43a32a MS |
15085 | error (_("Dwarf Error: Cannot find signatured DIE at 0x%x referenced " |
15086 | "from DIE at 0x%x [in module %s]"), | |
b64f50a1 | 15087 | temp_die.offset.sect_off, src_die->offset.sect_off, objfile->name); |
348e048f DE |
15088 | } |
15089 | ||
15090 | /* Given an offset of a signatured type, return its signatured_type. */ | |
15091 | ||
15092 | static struct signatured_type * | |
8b70b953 TT |
15093 | lookup_signatured_type_at_offset (struct objfile *objfile, |
15094 | struct dwarf2_section_info *section, | |
b64f50a1 | 15095 | sect_offset offset) |
348e048f | 15096 | { |
b64f50a1 | 15097 | gdb_byte *info_ptr = section->buffer + offset.sect_off; |
348e048f DE |
15098 | unsigned int length, initial_length_size; |
15099 | unsigned int sig_offset; | |
52dc124a | 15100 | struct signatured_type find_entry, *sig_type; |
348e048f DE |
15101 | |
15102 | length = read_initial_length (objfile->obfd, info_ptr, &initial_length_size); | |
15103 | sig_offset = (initial_length_size | |
15104 | + 2 /*version*/ | |
15105 | + (initial_length_size == 4 ? 4 : 8) /*debug_abbrev_offset*/ | |
15106 | + 1 /*address_size*/); | |
15107 | find_entry.signature = bfd_get_64 (objfile->obfd, info_ptr + sig_offset); | |
52dc124a | 15108 | sig_type = htab_find (dwarf2_per_objfile->signatured_types, &find_entry); |
348e048f DE |
15109 | |
15110 | /* This is only used to lookup previously recorded types. | |
15111 | If we didn't find it, it's our bug. */ | |
52dc124a DE |
15112 | gdb_assert (sig_type != NULL); |
15113 | gdb_assert (offset.sect_off == sig_type->per_cu.offset.sect_off); | |
348e048f | 15114 | |
52dc124a | 15115 | return sig_type; |
348e048f DE |
15116 | } |
15117 | ||
e5fe5e75 | 15118 | /* Load the DIEs associated with type unit PER_CU into memory. */ |
348e048f DE |
15119 | |
15120 | static void | |
e5fe5e75 | 15121 | load_full_type_unit (struct dwarf2_per_cu_data *per_cu) |
348e048f | 15122 | { |
e5fe5e75 | 15123 | struct objfile *objfile = per_cu->objfile; |
3019eac3 | 15124 | struct dwarf2_section_info *sect = per_cu->info_or_types_section; |
b64f50a1 | 15125 | sect_offset offset = per_cu->offset; |
52dc124a | 15126 | struct signatured_type *sig_type; |
348e048f | 15127 | |
8b70b953 | 15128 | dwarf2_read_section (objfile, sect); |
be391dca | 15129 | |
348e048f | 15130 | /* We have the section offset, but we need the signature to do the |
e5fe5e75 DE |
15131 | hash table lookup. */ |
15132 | /* FIXME: This is sorta unnecessary, read_signatured_type only uses | |
15133 | the signature to assert we found the right one. | |
15134 | Ok, but it's a lot of work. We should simplify things so any needed | |
15135 | assert doesn't require all this clumsiness. */ | |
52dc124a | 15136 | sig_type = lookup_signatured_type_at_offset (objfile, sect, offset); |
348e048f | 15137 | |
dee91e82 | 15138 | gdb_assert (&sig_type->per_cu == per_cu); |
52dc124a | 15139 | gdb_assert (sig_type->per_cu.cu == NULL); |
348e048f | 15140 | |
52dc124a | 15141 | read_signatured_type (sig_type); |
348e048f | 15142 | |
52dc124a | 15143 | gdb_assert (sig_type->per_cu.cu != NULL); |
348e048f DE |
15144 | } |
15145 | ||
dee91e82 DE |
15146 | /* die_reader_func for read_signatured_type. |
15147 | This is identical to load_full_comp_unit_reader, | |
15148 | but is kept separate for now. */ | |
348e048f DE |
15149 | |
15150 | static void | |
dee91e82 DE |
15151 | read_signatured_type_reader (const struct die_reader_specs *reader, |
15152 | gdb_byte *info_ptr, | |
15153 | struct die_info *comp_unit_die, | |
15154 | int has_children, | |
15155 | void *data) | |
348e048f | 15156 | { |
dee91e82 DE |
15157 | struct dwarf2_cu *cu = reader->cu; |
15158 | struct attribute *attr; | |
348e048f | 15159 | |
dee91e82 DE |
15160 | gdb_assert (cu->die_hash == NULL); |
15161 | cu->die_hash = | |
15162 | htab_create_alloc_ex (cu->header.length / 12, | |
15163 | die_hash, | |
15164 | die_eq, | |
15165 | NULL, | |
15166 | &cu->comp_unit_obstack, | |
15167 | hashtab_obstack_allocate, | |
15168 | dummy_obstack_deallocate); | |
348e048f | 15169 | |
dee91e82 DE |
15170 | if (has_children) |
15171 | comp_unit_die->child = read_die_and_siblings (reader, info_ptr, | |
15172 | &info_ptr, comp_unit_die); | |
15173 | cu->dies = comp_unit_die; | |
15174 | /* comp_unit_die is not stored in die_hash, no need. */ | |
348e048f DE |
15175 | |
15176 | /* We try not to read any attributes in this function, because not | |
9cdd5dbd | 15177 | all CUs needed for references have been loaded yet, and symbol |
348e048f | 15178 | table processing isn't initialized. But we have to set the CU language, |
dee91e82 DE |
15179 | or we won't be able to build types correctly. |
15180 | Similarly, if we do not read the producer, we can not apply | |
15181 | producer-specific interpretation. */ | |
95554aad | 15182 | prepare_one_comp_unit (cu, cu->dies, language_minimal); |
dee91e82 | 15183 | } |
348e048f | 15184 | |
3019eac3 DE |
15185 | /* Read in a signatured type and build its CU and DIEs. |
15186 | If the type is a stub for the real type in a DWO file, | |
15187 | read in the real type from the DWO file as well. */ | |
dee91e82 DE |
15188 | |
15189 | static void | |
15190 | read_signatured_type (struct signatured_type *sig_type) | |
15191 | { | |
15192 | struct dwarf2_per_cu_data *per_cu = &sig_type->per_cu; | |
348e048f | 15193 | |
3019eac3 | 15194 | gdb_assert (per_cu->is_debug_types); |
dee91e82 | 15195 | gdb_assert (per_cu->cu == NULL); |
348e048f | 15196 | |
fd820528 | 15197 | init_cutu_and_read_dies (per_cu, 0, 1, read_signatured_type_reader, NULL); |
c906108c SS |
15198 | } |
15199 | ||
c906108c SS |
15200 | /* Decode simple location descriptions. |
15201 | Given a pointer to a dwarf block that defines a location, compute | |
15202 | the location and return the value. | |
15203 | ||
4cecd739 DJ |
15204 | NOTE drow/2003-11-18: This function is called in two situations |
15205 | now: for the address of static or global variables (partial symbols | |
15206 | only) and for offsets into structures which are expected to be | |
15207 | (more or less) constant. The partial symbol case should go away, | |
15208 | and only the constant case should remain. That will let this | |
15209 | function complain more accurately. A few special modes are allowed | |
15210 | without complaint for global variables (for instance, global | |
15211 | register values and thread-local values). | |
c906108c SS |
15212 | |
15213 | A location description containing no operations indicates that the | |
4cecd739 | 15214 | object is optimized out. The return value is 0 for that case. |
6b992462 DJ |
15215 | FIXME drow/2003-11-16: No callers check for this case any more; soon all |
15216 | callers will only want a very basic result and this can become a | |
21ae7a4d JK |
15217 | complaint. |
15218 | ||
15219 | Note that stack[0] is unused except as a default error return. */ | |
c906108c SS |
15220 | |
15221 | static CORE_ADDR | |
e7c27a73 | 15222 | decode_locdesc (struct dwarf_block *blk, struct dwarf2_cu *cu) |
c906108c | 15223 | { |
e7c27a73 | 15224 | struct objfile *objfile = cu->objfile; |
21ae7a4d JK |
15225 | int i; |
15226 | int size = blk->size; | |
15227 | gdb_byte *data = blk->data; | |
15228 | CORE_ADDR stack[64]; | |
15229 | int stacki; | |
15230 | unsigned int bytes_read, unsnd; | |
15231 | gdb_byte op; | |
c906108c | 15232 | |
21ae7a4d JK |
15233 | i = 0; |
15234 | stacki = 0; | |
15235 | stack[stacki] = 0; | |
15236 | stack[++stacki] = 0; | |
15237 | ||
15238 | while (i < size) | |
15239 | { | |
15240 | op = data[i++]; | |
15241 | switch (op) | |
15242 | { | |
15243 | case DW_OP_lit0: | |
15244 | case DW_OP_lit1: | |
15245 | case DW_OP_lit2: | |
15246 | case DW_OP_lit3: | |
15247 | case DW_OP_lit4: | |
15248 | case DW_OP_lit5: | |
15249 | case DW_OP_lit6: | |
15250 | case DW_OP_lit7: | |
15251 | case DW_OP_lit8: | |
15252 | case DW_OP_lit9: | |
15253 | case DW_OP_lit10: | |
15254 | case DW_OP_lit11: | |
15255 | case DW_OP_lit12: | |
15256 | case DW_OP_lit13: | |
15257 | case DW_OP_lit14: | |
15258 | case DW_OP_lit15: | |
15259 | case DW_OP_lit16: | |
15260 | case DW_OP_lit17: | |
15261 | case DW_OP_lit18: | |
15262 | case DW_OP_lit19: | |
15263 | case DW_OP_lit20: | |
15264 | case DW_OP_lit21: | |
15265 | case DW_OP_lit22: | |
15266 | case DW_OP_lit23: | |
15267 | case DW_OP_lit24: | |
15268 | case DW_OP_lit25: | |
15269 | case DW_OP_lit26: | |
15270 | case DW_OP_lit27: | |
15271 | case DW_OP_lit28: | |
15272 | case DW_OP_lit29: | |
15273 | case DW_OP_lit30: | |
15274 | case DW_OP_lit31: | |
15275 | stack[++stacki] = op - DW_OP_lit0; | |
15276 | break; | |
f1bea926 | 15277 | |
21ae7a4d JK |
15278 | case DW_OP_reg0: |
15279 | case DW_OP_reg1: | |
15280 | case DW_OP_reg2: | |
15281 | case DW_OP_reg3: | |
15282 | case DW_OP_reg4: | |
15283 | case DW_OP_reg5: | |
15284 | case DW_OP_reg6: | |
15285 | case DW_OP_reg7: | |
15286 | case DW_OP_reg8: | |
15287 | case DW_OP_reg9: | |
15288 | case DW_OP_reg10: | |
15289 | case DW_OP_reg11: | |
15290 | case DW_OP_reg12: | |
15291 | case DW_OP_reg13: | |
15292 | case DW_OP_reg14: | |
15293 | case DW_OP_reg15: | |
15294 | case DW_OP_reg16: | |
15295 | case DW_OP_reg17: | |
15296 | case DW_OP_reg18: | |
15297 | case DW_OP_reg19: | |
15298 | case DW_OP_reg20: | |
15299 | case DW_OP_reg21: | |
15300 | case DW_OP_reg22: | |
15301 | case DW_OP_reg23: | |
15302 | case DW_OP_reg24: | |
15303 | case DW_OP_reg25: | |
15304 | case DW_OP_reg26: | |
15305 | case DW_OP_reg27: | |
15306 | case DW_OP_reg28: | |
15307 | case DW_OP_reg29: | |
15308 | case DW_OP_reg30: | |
15309 | case DW_OP_reg31: | |
15310 | stack[++stacki] = op - DW_OP_reg0; | |
15311 | if (i < size) | |
15312 | dwarf2_complex_location_expr_complaint (); | |
15313 | break; | |
c906108c | 15314 | |
21ae7a4d JK |
15315 | case DW_OP_regx: |
15316 | unsnd = read_unsigned_leb128 (NULL, (data + i), &bytes_read); | |
15317 | i += bytes_read; | |
15318 | stack[++stacki] = unsnd; | |
15319 | if (i < size) | |
15320 | dwarf2_complex_location_expr_complaint (); | |
15321 | break; | |
c906108c | 15322 | |
21ae7a4d JK |
15323 | case DW_OP_addr: |
15324 | stack[++stacki] = read_address (objfile->obfd, &data[i], | |
15325 | cu, &bytes_read); | |
15326 | i += bytes_read; | |
15327 | break; | |
d53d4ac5 | 15328 | |
21ae7a4d JK |
15329 | case DW_OP_const1u: |
15330 | stack[++stacki] = read_1_byte (objfile->obfd, &data[i]); | |
15331 | i += 1; | |
15332 | break; | |
15333 | ||
15334 | case DW_OP_const1s: | |
15335 | stack[++stacki] = read_1_signed_byte (objfile->obfd, &data[i]); | |
15336 | i += 1; | |
15337 | break; | |
15338 | ||
15339 | case DW_OP_const2u: | |
15340 | stack[++stacki] = read_2_bytes (objfile->obfd, &data[i]); | |
15341 | i += 2; | |
15342 | break; | |
15343 | ||
15344 | case DW_OP_const2s: | |
15345 | stack[++stacki] = read_2_signed_bytes (objfile->obfd, &data[i]); | |
15346 | i += 2; | |
15347 | break; | |
d53d4ac5 | 15348 | |
21ae7a4d JK |
15349 | case DW_OP_const4u: |
15350 | stack[++stacki] = read_4_bytes (objfile->obfd, &data[i]); | |
15351 | i += 4; | |
15352 | break; | |
15353 | ||
15354 | case DW_OP_const4s: | |
15355 | stack[++stacki] = read_4_signed_bytes (objfile->obfd, &data[i]); | |
15356 | i += 4; | |
15357 | break; | |
15358 | ||
585861ea JK |
15359 | case DW_OP_const8u: |
15360 | stack[++stacki] = read_8_bytes (objfile->obfd, &data[i]); | |
15361 | i += 8; | |
15362 | break; | |
15363 | ||
21ae7a4d JK |
15364 | case DW_OP_constu: |
15365 | stack[++stacki] = read_unsigned_leb128 (NULL, (data + i), | |
15366 | &bytes_read); | |
15367 | i += bytes_read; | |
15368 | break; | |
15369 | ||
15370 | case DW_OP_consts: | |
15371 | stack[++stacki] = read_signed_leb128 (NULL, (data + i), &bytes_read); | |
15372 | i += bytes_read; | |
15373 | break; | |
15374 | ||
15375 | case DW_OP_dup: | |
15376 | stack[stacki + 1] = stack[stacki]; | |
15377 | stacki++; | |
15378 | break; | |
15379 | ||
15380 | case DW_OP_plus: | |
15381 | stack[stacki - 1] += stack[stacki]; | |
15382 | stacki--; | |
15383 | break; | |
15384 | ||
15385 | case DW_OP_plus_uconst: | |
15386 | stack[stacki] += read_unsigned_leb128 (NULL, (data + i), | |
15387 | &bytes_read); | |
15388 | i += bytes_read; | |
15389 | break; | |
15390 | ||
15391 | case DW_OP_minus: | |
15392 | stack[stacki - 1] -= stack[stacki]; | |
15393 | stacki--; | |
15394 | break; | |
15395 | ||
15396 | case DW_OP_deref: | |
15397 | /* If we're not the last op, then we definitely can't encode | |
15398 | this using GDB's address_class enum. This is valid for partial | |
15399 | global symbols, although the variable's address will be bogus | |
15400 | in the psymtab. */ | |
15401 | if (i < size) | |
15402 | dwarf2_complex_location_expr_complaint (); | |
15403 | break; | |
15404 | ||
15405 | case DW_OP_GNU_push_tls_address: | |
15406 | /* The top of the stack has the offset from the beginning | |
15407 | of the thread control block at which the variable is located. */ | |
15408 | /* Nothing should follow this operator, so the top of stack would | |
15409 | be returned. */ | |
15410 | /* This is valid for partial global symbols, but the variable's | |
585861ea JK |
15411 | address will be bogus in the psymtab. Make it always at least |
15412 | non-zero to not look as a variable garbage collected by linker | |
15413 | which have DW_OP_addr 0. */ | |
21ae7a4d JK |
15414 | if (i < size) |
15415 | dwarf2_complex_location_expr_complaint (); | |
585861ea | 15416 | stack[stacki]++; |
21ae7a4d JK |
15417 | break; |
15418 | ||
15419 | case DW_OP_GNU_uninit: | |
15420 | break; | |
15421 | ||
3019eac3 DE |
15422 | case DW_OP_GNU_addr_index: |
15423 | stack[++stacki] = read_addr_index_from_leb128 (cu, &data[i], | |
15424 | &bytes_read); | |
15425 | i += bytes_read; | |
15426 | break; | |
15427 | ||
21ae7a4d JK |
15428 | default: |
15429 | { | |
f39c6ffd | 15430 | const char *name = get_DW_OP_name (op); |
21ae7a4d JK |
15431 | |
15432 | if (name) | |
15433 | complaint (&symfile_complaints, _("unsupported stack op: '%s'"), | |
15434 | name); | |
15435 | else | |
15436 | complaint (&symfile_complaints, _("unsupported stack op: '%02x'"), | |
15437 | op); | |
15438 | } | |
15439 | ||
15440 | return (stack[stacki]); | |
d53d4ac5 | 15441 | } |
3c6e0cb3 | 15442 | |
21ae7a4d JK |
15443 | /* Enforce maximum stack depth of SIZE-1 to avoid writing |
15444 | outside of the allocated space. Also enforce minimum>0. */ | |
15445 | if (stacki >= ARRAY_SIZE (stack) - 1) | |
15446 | { | |
15447 | complaint (&symfile_complaints, | |
15448 | _("location description stack overflow")); | |
15449 | return 0; | |
15450 | } | |
15451 | ||
15452 | if (stacki <= 0) | |
15453 | { | |
15454 | complaint (&symfile_complaints, | |
15455 | _("location description stack underflow")); | |
15456 | return 0; | |
15457 | } | |
15458 | } | |
15459 | return (stack[stacki]); | |
c906108c SS |
15460 | } |
15461 | ||
15462 | /* memory allocation interface */ | |
15463 | ||
c906108c | 15464 | static struct dwarf_block * |
7b5a2f43 | 15465 | dwarf_alloc_block (struct dwarf2_cu *cu) |
c906108c SS |
15466 | { |
15467 | struct dwarf_block *blk; | |
15468 | ||
15469 | blk = (struct dwarf_block *) | |
7b5a2f43 | 15470 | obstack_alloc (&cu->comp_unit_obstack, sizeof (struct dwarf_block)); |
c906108c SS |
15471 | return (blk); |
15472 | } | |
15473 | ||
15474 | static struct abbrev_info * | |
f3dd6933 | 15475 | dwarf_alloc_abbrev (struct dwarf2_cu *cu) |
c906108c SS |
15476 | { |
15477 | struct abbrev_info *abbrev; | |
15478 | ||
f3dd6933 DJ |
15479 | abbrev = (struct abbrev_info *) |
15480 | obstack_alloc (&cu->abbrev_obstack, sizeof (struct abbrev_info)); | |
c906108c SS |
15481 | memset (abbrev, 0, sizeof (struct abbrev_info)); |
15482 | return (abbrev); | |
15483 | } | |
15484 | ||
15485 | static struct die_info * | |
b60c80d6 | 15486 | dwarf_alloc_die (struct dwarf2_cu *cu, int num_attrs) |
c906108c SS |
15487 | { |
15488 | struct die_info *die; | |
b60c80d6 DJ |
15489 | size_t size = sizeof (struct die_info); |
15490 | ||
15491 | if (num_attrs > 1) | |
15492 | size += (num_attrs - 1) * sizeof (struct attribute); | |
c906108c | 15493 | |
b60c80d6 | 15494 | die = (struct die_info *) obstack_alloc (&cu->comp_unit_obstack, size); |
c906108c SS |
15495 | memset (die, 0, sizeof (struct die_info)); |
15496 | return (die); | |
15497 | } | |
2e276125 JB |
15498 | |
15499 | \f | |
15500 | /* Macro support. */ | |
15501 | ||
2e276125 JB |
15502 | /* Return the full name of file number I in *LH's file name table. |
15503 | Use COMP_DIR as the name of the current directory of the | |
15504 | compilation. The result is allocated using xmalloc; the caller is | |
15505 | responsible for freeing it. */ | |
15506 | static char * | |
15507 | file_full_name (int file, struct line_header *lh, const char *comp_dir) | |
15508 | { | |
6a83a1e6 EZ |
15509 | /* Is the file number a valid index into the line header's file name |
15510 | table? Remember that file numbers start with one, not zero. */ | |
15511 | if (1 <= file && file <= lh->num_file_names) | |
15512 | { | |
15513 | struct file_entry *fe = &lh->file_names[file - 1]; | |
6e70227d | 15514 | |
6a83a1e6 EZ |
15515 | if (IS_ABSOLUTE_PATH (fe->name)) |
15516 | return xstrdup (fe->name); | |
15517 | else | |
15518 | { | |
15519 | const char *dir; | |
15520 | int dir_len; | |
15521 | char *full_name; | |
15522 | ||
15523 | if (fe->dir_index) | |
15524 | dir = lh->include_dirs[fe->dir_index - 1]; | |
15525 | else | |
15526 | dir = comp_dir; | |
15527 | ||
15528 | if (dir) | |
15529 | { | |
15530 | dir_len = strlen (dir); | |
15531 | full_name = xmalloc (dir_len + 1 + strlen (fe->name) + 1); | |
15532 | strcpy (full_name, dir); | |
15533 | full_name[dir_len] = '/'; | |
15534 | strcpy (full_name + dir_len + 1, fe->name); | |
15535 | return full_name; | |
15536 | } | |
15537 | else | |
15538 | return xstrdup (fe->name); | |
15539 | } | |
15540 | } | |
2e276125 JB |
15541 | else |
15542 | { | |
6a83a1e6 EZ |
15543 | /* The compiler produced a bogus file number. We can at least |
15544 | record the macro definitions made in the file, even if we | |
15545 | won't be able to find the file by name. */ | |
15546 | char fake_name[80]; | |
9a619af0 | 15547 | |
6a83a1e6 | 15548 | sprintf (fake_name, "<bad macro file number %d>", file); |
2e276125 | 15549 | |
6e70227d | 15550 | complaint (&symfile_complaints, |
6a83a1e6 EZ |
15551 | _("bad file number in macro information (%d)"), |
15552 | file); | |
2e276125 | 15553 | |
6a83a1e6 | 15554 | return xstrdup (fake_name); |
2e276125 JB |
15555 | } |
15556 | } | |
15557 | ||
15558 | ||
15559 | static struct macro_source_file * | |
15560 | macro_start_file (int file, int line, | |
15561 | struct macro_source_file *current_file, | |
15562 | const char *comp_dir, | |
15563 | struct line_header *lh, struct objfile *objfile) | |
15564 | { | |
15565 | /* The full name of this source file. */ | |
15566 | char *full_name = file_full_name (file, lh, comp_dir); | |
15567 | ||
15568 | /* We don't create a macro table for this compilation unit | |
15569 | at all until we actually get a filename. */ | |
15570 | if (! pending_macros) | |
4a146b47 | 15571 | pending_macros = new_macro_table (&objfile->objfile_obstack, |
af5f3db6 | 15572 | objfile->macro_cache); |
2e276125 JB |
15573 | |
15574 | if (! current_file) | |
15575 | /* If we have no current file, then this must be the start_file | |
15576 | directive for the compilation unit's main source file. */ | |
15577 | current_file = macro_set_main (pending_macros, full_name); | |
15578 | else | |
15579 | current_file = macro_include (current_file, line, full_name); | |
15580 | ||
15581 | xfree (full_name); | |
6e70227d | 15582 | |
2e276125 JB |
15583 | return current_file; |
15584 | } | |
15585 | ||
15586 | ||
15587 | /* Copy the LEN characters at BUF to a xmalloc'ed block of memory, | |
15588 | followed by a null byte. */ | |
15589 | static char * | |
15590 | copy_string (const char *buf, int len) | |
15591 | { | |
15592 | char *s = xmalloc (len + 1); | |
9a619af0 | 15593 | |
2e276125 JB |
15594 | memcpy (s, buf, len); |
15595 | s[len] = '\0'; | |
2e276125 JB |
15596 | return s; |
15597 | } | |
15598 | ||
15599 | ||
15600 | static const char * | |
15601 | consume_improper_spaces (const char *p, const char *body) | |
15602 | { | |
15603 | if (*p == ' ') | |
15604 | { | |
4d3c2250 | 15605 | complaint (&symfile_complaints, |
3e43a32a MS |
15606 | _("macro definition contains spaces " |
15607 | "in formal argument list:\n`%s'"), | |
4d3c2250 | 15608 | body); |
2e276125 JB |
15609 | |
15610 | while (*p == ' ') | |
15611 | p++; | |
15612 | } | |
15613 | ||
15614 | return p; | |
15615 | } | |
15616 | ||
15617 | ||
15618 | static void | |
15619 | parse_macro_definition (struct macro_source_file *file, int line, | |
15620 | const char *body) | |
15621 | { | |
15622 | const char *p; | |
15623 | ||
15624 | /* The body string takes one of two forms. For object-like macro | |
15625 | definitions, it should be: | |
15626 | ||
15627 | <macro name> " " <definition> | |
15628 | ||
15629 | For function-like macro definitions, it should be: | |
15630 | ||
15631 | <macro name> "() " <definition> | |
15632 | or | |
15633 | <macro name> "(" <arg name> ( "," <arg name> ) * ") " <definition> | |
15634 | ||
15635 | Spaces may appear only where explicitly indicated, and in the | |
15636 | <definition>. | |
15637 | ||
15638 | The Dwarf 2 spec says that an object-like macro's name is always | |
15639 | followed by a space, but versions of GCC around March 2002 omit | |
6e70227d | 15640 | the space when the macro's definition is the empty string. |
2e276125 JB |
15641 | |
15642 | The Dwarf 2 spec says that there should be no spaces between the | |
15643 | formal arguments in a function-like macro's formal argument list, | |
15644 | but versions of GCC around March 2002 include spaces after the | |
15645 | commas. */ | |
15646 | ||
15647 | ||
15648 | /* Find the extent of the macro name. The macro name is terminated | |
15649 | by either a space or null character (for an object-like macro) or | |
15650 | an opening paren (for a function-like macro). */ | |
15651 | for (p = body; *p; p++) | |
15652 | if (*p == ' ' || *p == '(') | |
15653 | break; | |
15654 | ||
15655 | if (*p == ' ' || *p == '\0') | |
15656 | { | |
15657 | /* It's an object-like macro. */ | |
15658 | int name_len = p - body; | |
15659 | char *name = copy_string (body, name_len); | |
15660 | const char *replacement; | |
15661 | ||
15662 | if (*p == ' ') | |
15663 | replacement = body + name_len + 1; | |
15664 | else | |
15665 | { | |
4d3c2250 | 15666 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
15667 | replacement = body + name_len; |
15668 | } | |
6e70227d | 15669 | |
2e276125 JB |
15670 | macro_define_object (file, line, name, replacement); |
15671 | ||
15672 | xfree (name); | |
15673 | } | |
15674 | else if (*p == '(') | |
15675 | { | |
15676 | /* It's a function-like macro. */ | |
15677 | char *name = copy_string (body, p - body); | |
15678 | int argc = 0; | |
15679 | int argv_size = 1; | |
15680 | char **argv = xmalloc (argv_size * sizeof (*argv)); | |
15681 | ||
15682 | p++; | |
15683 | ||
15684 | p = consume_improper_spaces (p, body); | |
15685 | ||
15686 | /* Parse the formal argument list. */ | |
15687 | while (*p && *p != ')') | |
15688 | { | |
15689 | /* Find the extent of the current argument name. */ | |
15690 | const char *arg_start = p; | |
15691 | ||
15692 | while (*p && *p != ',' && *p != ')' && *p != ' ') | |
15693 | p++; | |
15694 | ||
15695 | if (! *p || p == arg_start) | |
4d3c2250 | 15696 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
15697 | else |
15698 | { | |
15699 | /* Make sure argv has room for the new argument. */ | |
15700 | if (argc >= argv_size) | |
15701 | { | |
15702 | argv_size *= 2; | |
15703 | argv = xrealloc (argv, argv_size * sizeof (*argv)); | |
15704 | } | |
15705 | ||
15706 | argv[argc++] = copy_string (arg_start, p - arg_start); | |
15707 | } | |
15708 | ||
15709 | p = consume_improper_spaces (p, body); | |
15710 | ||
15711 | /* Consume the comma, if present. */ | |
15712 | if (*p == ',') | |
15713 | { | |
15714 | p++; | |
15715 | ||
15716 | p = consume_improper_spaces (p, body); | |
15717 | } | |
15718 | } | |
15719 | ||
15720 | if (*p == ')') | |
15721 | { | |
15722 | p++; | |
15723 | ||
15724 | if (*p == ' ') | |
15725 | /* Perfectly formed definition, no complaints. */ | |
15726 | macro_define_function (file, line, name, | |
6e70227d | 15727 | argc, (const char **) argv, |
2e276125 JB |
15728 | p + 1); |
15729 | else if (*p == '\0') | |
15730 | { | |
15731 | /* Complain, but do define it. */ | |
4d3c2250 | 15732 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 | 15733 | macro_define_function (file, line, name, |
6e70227d | 15734 | argc, (const char **) argv, |
2e276125 JB |
15735 | p); |
15736 | } | |
15737 | else | |
15738 | /* Just complain. */ | |
4d3c2250 | 15739 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
15740 | } |
15741 | else | |
15742 | /* Just complain. */ | |
4d3c2250 | 15743 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
15744 | |
15745 | xfree (name); | |
15746 | { | |
15747 | int i; | |
15748 | ||
15749 | for (i = 0; i < argc; i++) | |
15750 | xfree (argv[i]); | |
15751 | } | |
15752 | xfree (argv); | |
15753 | } | |
15754 | else | |
4d3c2250 | 15755 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
15756 | } |
15757 | ||
cf2c3c16 TT |
15758 | /* Skip some bytes from BYTES according to the form given in FORM. |
15759 | Returns the new pointer. */ | |
2e276125 | 15760 | |
cf2c3c16 TT |
15761 | static gdb_byte * |
15762 | skip_form_bytes (bfd *abfd, gdb_byte *bytes, | |
15763 | enum dwarf_form form, | |
15764 | unsigned int offset_size, | |
15765 | struct dwarf2_section_info *section) | |
2e276125 | 15766 | { |
cf2c3c16 | 15767 | unsigned int bytes_read; |
2e276125 | 15768 | |
cf2c3c16 | 15769 | switch (form) |
2e276125 | 15770 | { |
cf2c3c16 TT |
15771 | case DW_FORM_data1: |
15772 | case DW_FORM_flag: | |
15773 | ++bytes; | |
15774 | break; | |
15775 | ||
15776 | case DW_FORM_data2: | |
15777 | bytes += 2; | |
15778 | break; | |
15779 | ||
15780 | case DW_FORM_data4: | |
15781 | bytes += 4; | |
15782 | break; | |
15783 | ||
15784 | case DW_FORM_data8: | |
15785 | bytes += 8; | |
15786 | break; | |
15787 | ||
15788 | case DW_FORM_string: | |
15789 | read_direct_string (abfd, bytes, &bytes_read); | |
15790 | bytes += bytes_read; | |
15791 | break; | |
15792 | ||
15793 | case DW_FORM_sec_offset: | |
15794 | case DW_FORM_strp: | |
15795 | bytes += offset_size; | |
15796 | break; | |
15797 | ||
15798 | case DW_FORM_block: | |
15799 | bytes += read_unsigned_leb128 (abfd, bytes, &bytes_read); | |
15800 | bytes += bytes_read; | |
15801 | break; | |
15802 | ||
15803 | case DW_FORM_block1: | |
15804 | bytes += 1 + read_1_byte (abfd, bytes); | |
15805 | break; | |
15806 | case DW_FORM_block2: | |
15807 | bytes += 2 + read_2_bytes (abfd, bytes); | |
15808 | break; | |
15809 | case DW_FORM_block4: | |
15810 | bytes += 4 + read_4_bytes (abfd, bytes); | |
15811 | break; | |
15812 | ||
15813 | case DW_FORM_sdata: | |
15814 | case DW_FORM_udata: | |
3019eac3 DE |
15815 | case DW_FORM_GNU_addr_index: |
15816 | case DW_FORM_GNU_str_index: | |
cf2c3c16 TT |
15817 | bytes = skip_leb128 (abfd, bytes); |
15818 | break; | |
15819 | ||
15820 | default: | |
15821 | { | |
15822 | complain: | |
15823 | complaint (&symfile_complaints, | |
15824 | _("invalid form 0x%x in `%s'"), | |
15825 | form, | |
15826 | section->asection->name); | |
15827 | return NULL; | |
15828 | } | |
2e276125 JB |
15829 | } |
15830 | ||
cf2c3c16 TT |
15831 | return bytes; |
15832 | } | |
757a13d0 | 15833 | |
cf2c3c16 TT |
15834 | /* A helper for dwarf_decode_macros that handles skipping an unknown |
15835 | opcode. Returns an updated pointer to the macro data buffer; or, | |
15836 | on error, issues a complaint and returns NULL. */ | |
757a13d0 | 15837 | |
cf2c3c16 TT |
15838 | static gdb_byte * |
15839 | skip_unknown_opcode (unsigned int opcode, | |
15840 | gdb_byte **opcode_definitions, | |
15841 | gdb_byte *mac_ptr, | |
15842 | bfd *abfd, | |
15843 | unsigned int offset_size, | |
15844 | struct dwarf2_section_info *section) | |
15845 | { | |
15846 | unsigned int bytes_read, i; | |
15847 | unsigned long arg; | |
15848 | gdb_byte *defn; | |
2e276125 | 15849 | |
cf2c3c16 | 15850 | if (opcode_definitions[opcode] == NULL) |
2e276125 | 15851 | { |
cf2c3c16 TT |
15852 | complaint (&symfile_complaints, |
15853 | _("unrecognized DW_MACFINO opcode 0x%x"), | |
15854 | opcode); | |
15855 | return NULL; | |
15856 | } | |
2e276125 | 15857 | |
cf2c3c16 TT |
15858 | defn = opcode_definitions[opcode]; |
15859 | arg = read_unsigned_leb128 (abfd, defn, &bytes_read); | |
15860 | defn += bytes_read; | |
2e276125 | 15861 | |
cf2c3c16 TT |
15862 | for (i = 0; i < arg; ++i) |
15863 | { | |
15864 | mac_ptr = skip_form_bytes (abfd, mac_ptr, defn[i], offset_size, section); | |
15865 | if (mac_ptr == NULL) | |
15866 | { | |
15867 | /* skip_form_bytes already issued the complaint. */ | |
15868 | return NULL; | |
15869 | } | |
15870 | } | |
757a13d0 | 15871 | |
cf2c3c16 TT |
15872 | return mac_ptr; |
15873 | } | |
757a13d0 | 15874 | |
cf2c3c16 TT |
15875 | /* A helper function which parses the header of a macro section. |
15876 | If the macro section is the extended (for now called "GNU") type, | |
15877 | then this updates *OFFSET_SIZE. Returns a pointer to just after | |
15878 | the header, or issues a complaint and returns NULL on error. */ | |
757a13d0 | 15879 | |
cf2c3c16 TT |
15880 | static gdb_byte * |
15881 | dwarf_parse_macro_header (gdb_byte **opcode_definitions, | |
15882 | bfd *abfd, | |
15883 | gdb_byte *mac_ptr, | |
15884 | unsigned int *offset_size, | |
15885 | int section_is_gnu) | |
15886 | { | |
15887 | memset (opcode_definitions, 0, 256 * sizeof (gdb_byte *)); | |
757a13d0 | 15888 | |
cf2c3c16 TT |
15889 | if (section_is_gnu) |
15890 | { | |
15891 | unsigned int version, flags; | |
757a13d0 | 15892 | |
cf2c3c16 TT |
15893 | version = read_2_bytes (abfd, mac_ptr); |
15894 | if (version != 4) | |
15895 | { | |
15896 | complaint (&symfile_complaints, | |
15897 | _("unrecognized version `%d' in .debug_macro section"), | |
15898 | version); | |
15899 | return NULL; | |
15900 | } | |
15901 | mac_ptr += 2; | |
757a13d0 | 15902 | |
cf2c3c16 TT |
15903 | flags = read_1_byte (abfd, mac_ptr); |
15904 | ++mac_ptr; | |
15905 | *offset_size = (flags & 1) ? 8 : 4; | |
757a13d0 | 15906 | |
cf2c3c16 TT |
15907 | if ((flags & 2) != 0) |
15908 | /* We don't need the line table offset. */ | |
15909 | mac_ptr += *offset_size; | |
757a13d0 | 15910 | |
cf2c3c16 TT |
15911 | /* Vendor opcode descriptions. */ |
15912 | if ((flags & 4) != 0) | |
15913 | { | |
15914 | unsigned int i, count; | |
757a13d0 | 15915 | |
cf2c3c16 TT |
15916 | count = read_1_byte (abfd, mac_ptr); |
15917 | ++mac_ptr; | |
15918 | for (i = 0; i < count; ++i) | |
15919 | { | |
15920 | unsigned int opcode, bytes_read; | |
15921 | unsigned long arg; | |
15922 | ||
15923 | opcode = read_1_byte (abfd, mac_ptr); | |
15924 | ++mac_ptr; | |
15925 | opcode_definitions[opcode] = mac_ptr; | |
15926 | arg = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
15927 | mac_ptr += bytes_read; | |
15928 | mac_ptr += arg; | |
15929 | } | |
757a13d0 | 15930 | } |
cf2c3c16 | 15931 | } |
757a13d0 | 15932 | |
cf2c3c16 TT |
15933 | return mac_ptr; |
15934 | } | |
757a13d0 | 15935 | |
cf2c3c16 | 15936 | /* A helper for dwarf_decode_macros that handles the GNU extensions, |
8fc3fc34 | 15937 | including DW_MACRO_GNU_transparent_include. */ |
cf2c3c16 TT |
15938 | |
15939 | static void | |
15940 | dwarf_decode_macro_bytes (bfd *abfd, gdb_byte *mac_ptr, gdb_byte *mac_end, | |
15941 | struct macro_source_file *current_file, | |
15942 | struct line_header *lh, char *comp_dir, | |
15943 | struct dwarf2_section_info *section, | |
15944 | int section_is_gnu, | |
15945 | unsigned int offset_size, | |
8fc3fc34 TT |
15946 | struct objfile *objfile, |
15947 | htab_t include_hash) | |
cf2c3c16 TT |
15948 | { |
15949 | enum dwarf_macro_record_type macinfo_type; | |
15950 | int at_commandline; | |
15951 | gdb_byte *opcode_definitions[256]; | |
757a13d0 | 15952 | |
cf2c3c16 TT |
15953 | mac_ptr = dwarf_parse_macro_header (opcode_definitions, abfd, mac_ptr, |
15954 | &offset_size, section_is_gnu); | |
15955 | if (mac_ptr == NULL) | |
15956 | { | |
15957 | /* We already issued a complaint. */ | |
15958 | return; | |
15959 | } | |
757a13d0 JK |
15960 | |
15961 | /* Determines if GDB is still before first DW_MACINFO_start_file. If true | |
15962 | GDB is still reading the definitions from command line. First | |
15963 | DW_MACINFO_start_file will need to be ignored as it was already executed | |
15964 | to create CURRENT_FILE for the main source holding also the command line | |
15965 | definitions. On first met DW_MACINFO_start_file this flag is reset to | |
15966 | normally execute all the remaining DW_MACINFO_start_file macinfos. */ | |
15967 | ||
15968 | at_commandline = 1; | |
15969 | ||
15970 | do | |
15971 | { | |
15972 | /* Do we at least have room for a macinfo type byte? */ | |
15973 | if (mac_ptr >= mac_end) | |
15974 | { | |
cf2c3c16 | 15975 | dwarf2_macros_too_long_complaint (section); |
757a13d0 JK |
15976 | break; |
15977 | } | |
15978 | ||
15979 | macinfo_type = read_1_byte (abfd, mac_ptr); | |
15980 | mac_ptr++; | |
15981 | ||
cf2c3c16 TT |
15982 | /* Note that we rely on the fact that the corresponding GNU and |
15983 | DWARF constants are the same. */ | |
757a13d0 JK |
15984 | switch (macinfo_type) |
15985 | { | |
15986 | /* A zero macinfo type indicates the end of the macro | |
15987 | information. */ | |
15988 | case 0: | |
15989 | break; | |
2e276125 | 15990 | |
cf2c3c16 TT |
15991 | case DW_MACRO_GNU_define: |
15992 | case DW_MACRO_GNU_undef: | |
15993 | case DW_MACRO_GNU_define_indirect: | |
15994 | case DW_MACRO_GNU_undef_indirect: | |
2e276125 | 15995 | { |
891d2f0b | 15996 | unsigned int bytes_read; |
2e276125 JB |
15997 | int line; |
15998 | char *body; | |
cf2c3c16 | 15999 | int is_define; |
2e276125 | 16000 | |
cf2c3c16 TT |
16001 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); |
16002 | mac_ptr += bytes_read; | |
16003 | ||
16004 | if (macinfo_type == DW_MACRO_GNU_define | |
16005 | || macinfo_type == DW_MACRO_GNU_undef) | |
16006 | { | |
16007 | body = read_direct_string (abfd, mac_ptr, &bytes_read); | |
16008 | mac_ptr += bytes_read; | |
16009 | } | |
16010 | else | |
16011 | { | |
16012 | LONGEST str_offset; | |
16013 | ||
16014 | str_offset = read_offset_1 (abfd, mac_ptr, offset_size); | |
16015 | mac_ptr += offset_size; | |
2e276125 | 16016 | |
cf2c3c16 TT |
16017 | body = read_indirect_string_at_offset (abfd, str_offset); |
16018 | } | |
16019 | ||
16020 | is_define = (macinfo_type == DW_MACRO_GNU_define | |
16021 | || macinfo_type == DW_MACRO_GNU_define_indirect); | |
2e276125 | 16022 | if (! current_file) |
757a13d0 JK |
16023 | { |
16024 | /* DWARF violation as no main source is present. */ | |
16025 | complaint (&symfile_complaints, | |
16026 | _("debug info with no main source gives macro %s " | |
16027 | "on line %d: %s"), | |
cf2c3c16 TT |
16028 | is_define ? _("definition") : _("undefinition"), |
16029 | line, body); | |
757a13d0 JK |
16030 | break; |
16031 | } | |
3e43a32a MS |
16032 | if ((line == 0 && !at_commandline) |
16033 | || (line != 0 && at_commandline)) | |
4d3c2250 | 16034 | complaint (&symfile_complaints, |
757a13d0 JK |
16035 | _("debug info gives %s macro %s with %s line %d: %s"), |
16036 | at_commandline ? _("command-line") : _("in-file"), | |
cf2c3c16 | 16037 | is_define ? _("definition") : _("undefinition"), |
757a13d0 JK |
16038 | line == 0 ? _("zero") : _("non-zero"), line, body); |
16039 | ||
cf2c3c16 | 16040 | if (is_define) |
757a13d0 | 16041 | parse_macro_definition (current_file, line, body); |
cf2c3c16 TT |
16042 | else |
16043 | { | |
16044 | gdb_assert (macinfo_type == DW_MACRO_GNU_undef | |
16045 | || macinfo_type == DW_MACRO_GNU_undef_indirect); | |
16046 | macro_undef (current_file, line, body); | |
16047 | } | |
2e276125 JB |
16048 | } |
16049 | break; | |
16050 | ||
cf2c3c16 | 16051 | case DW_MACRO_GNU_start_file: |
2e276125 | 16052 | { |
891d2f0b | 16053 | unsigned int bytes_read; |
2e276125 JB |
16054 | int line, file; |
16055 | ||
16056 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
16057 | mac_ptr += bytes_read; | |
16058 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
16059 | mac_ptr += bytes_read; | |
16060 | ||
3e43a32a MS |
16061 | if ((line == 0 && !at_commandline) |
16062 | || (line != 0 && at_commandline)) | |
757a13d0 JK |
16063 | complaint (&symfile_complaints, |
16064 | _("debug info gives source %d included " | |
16065 | "from %s at %s line %d"), | |
16066 | file, at_commandline ? _("command-line") : _("file"), | |
16067 | line == 0 ? _("zero") : _("non-zero"), line); | |
16068 | ||
16069 | if (at_commandline) | |
16070 | { | |
cf2c3c16 TT |
16071 | /* This DW_MACRO_GNU_start_file was executed in the |
16072 | pass one. */ | |
757a13d0 JK |
16073 | at_commandline = 0; |
16074 | } | |
16075 | else | |
16076 | current_file = macro_start_file (file, line, | |
16077 | current_file, comp_dir, | |
cf2c3c16 | 16078 | lh, objfile); |
2e276125 JB |
16079 | } |
16080 | break; | |
16081 | ||
cf2c3c16 | 16082 | case DW_MACRO_GNU_end_file: |
2e276125 | 16083 | if (! current_file) |
4d3c2250 | 16084 | complaint (&symfile_complaints, |
3e43a32a MS |
16085 | _("macro debug info has an unmatched " |
16086 | "`close_file' directive")); | |
2e276125 JB |
16087 | else |
16088 | { | |
16089 | current_file = current_file->included_by; | |
16090 | if (! current_file) | |
16091 | { | |
cf2c3c16 | 16092 | enum dwarf_macro_record_type next_type; |
2e276125 JB |
16093 | |
16094 | /* GCC circa March 2002 doesn't produce the zero | |
16095 | type byte marking the end of the compilation | |
16096 | unit. Complain if it's not there, but exit no | |
16097 | matter what. */ | |
16098 | ||
16099 | /* Do we at least have room for a macinfo type byte? */ | |
16100 | if (mac_ptr >= mac_end) | |
16101 | { | |
cf2c3c16 | 16102 | dwarf2_macros_too_long_complaint (section); |
2e276125 JB |
16103 | return; |
16104 | } | |
16105 | ||
16106 | /* We don't increment mac_ptr here, so this is just | |
16107 | a look-ahead. */ | |
16108 | next_type = read_1_byte (abfd, mac_ptr); | |
16109 | if (next_type != 0) | |
4d3c2250 | 16110 | complaint (&symfile_complaints, |
3e43a32a MS |
16111 | _("no terminating 0-type entry for " |
16112 | "macros in `.debug_macinfo' section")); | |
2e276125 JB |
16113 | |
16114 | return; | |
16115 | } | |
16116 | } | |
16117 | break; | |
16118 | ||
cf2c3c16 TT |
16119 | case DW_MACRO_GNU_transparent_include: |
16120 | { | |
16121 | LONGEST offset; | |
8fc3fc34 | 16122 | void **slot; |
cf2c3c16 TT |
16123 | |
16124 | offset = read_offset_1 (abfd, mac_ptr, offset_size); | |
16125 | mac_ptr += offset_size; | |
16126 | ||
8fc3fc34 TT |
16127 | slot = htab_find_slot (include_hash, mac_ptr, INSERT); |
16128 | if (*slot != NULL) | |
16129 | { | |
16130 | /* This has actually happened; see | |
16131 | http://sourceware.org/bugzilla/show_bug.cgi?id=13568. */ | |
16132 | complaint (&symfile_complaints, | |
16133 | _("recursive DW_MACRO_GNU_transparent_include in " | |
16134 | ".debug_macro section")); | |
16135 | } | |
16136 | else | |
16137 | { | |
16138 | *slot = mac_ptr; | |
16139 | ||
16140 | dwarf_decode_macro_bytes (abfd, | |
16141 | section->buffer + offset, | |
16142 | mac_end, current_file, | |
16143 | lh, comp_dir, | |
16144 | section, section_is_gnu, | |
16145 | offset_size, objfile, include_hash); | |
16146 | ||
16147 | htab_remove_elt (include_hash, mac_ptr); | |
16148 | } | |
cf2c3c16 TT |
16149 | } |
16150 | break; | |
16151 | ||
2e276125 | 16152 | case DW_MACINFO_vendor_ext: |
cf2c3c16 TT |
16153 | if (!section_is_gnu) |
16154 | { | |
16155 | unsigned int bytes_read; | |
16156 | int constant; | |
2e276125 | 16157 | |
cf2c3c16 TT |
16158 | constant = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); |
16159 | mac_ptr += bytes_read; | |
16160 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
16161 | mac_ptr += bytes_read; | |
2e276125 | 16162 | |
cf2c3c16 TT |
16163 | /* We don't recognize any vendor extensions. */ |
16164 | break; | |
16165 | } | |
16166 | /* FALLTHROUGH */ | |
16167 | ||
16168 | default: | |
16169 | mac_ptr = skip_unknown_opcode (macinfo_type, opcode_definitions, | |
16170 | mac_ptr, abfd, offset_size, | |
16171 | section); | |
16172 | if (mac_ptr == NULL) | |
16173 | return; | |
16174 | break; | |
2e276125 | 16175 | } |
757a13d0 | 16176 | } while (macinfo_type != 0); |
2e276125 | 16177 | } |
8e19ed76 | 16178 | |
cf2c3c16 TT |
16179 | static void |
16180 | dwarf_decode_macros (struct line_header *lh, unsigned int offset, | |
16181 | char *comp_dir, bfd *abfd, | |
16182 | struct dwarf2_cu *cu, | |
16183 | struct dwarf2_section_info *section, | |
fceca515 | 16184 | int section_is_gnu, const char *section_name) |
cf2c3c16 | 16185 | { |
bb5ed363 | 16186 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
cf2c3c16 TT |
16187 | gdb_byte *mac_ptr, *mac_end; |
16188 | struct macro_source_file *current_file = 0; | |
16189 | enum dwarf_macro_record_type macinfo_type; | |
16190 | unsigned int offset_size = cu->header.offset_size; | |
16191 | gdb_byte *opcode_definitions[256]; | |
8fc3fc34 TT |
16192 | struct cleanup *cleanup; |
16193 | htab_t include_hash; | |
16194 | void **slot; | |
cf2c3c16 | 16195 | |
bb5ed363 | 16196 | dwarf2_read_section (objfile, section); |
cf2c3c16 TT |
16197 | if (section->buffer == NULL) |
16198 | { | |
fceca515 | 16199 | complaint (&symfile_complaints, _("missing %s section"), section_name); |
cf2c3c16 TT |
16200 | return; |
16201 | } | |
16202 | ||
16203 | /* First pass: Find the name of the base filename. | |
16204 | This filename is needed in order to process all macros whose definition | |
16205 | (or undefinition) comes from the command line. These macros are defined | |
16206 | before the first DW_MACINFO_start_file entry, and yet still need to be | |
16207 | associated to the base file. | |
16208 | ||
16209 | To determine the base file name, we scan the macro definitions until we | |
16210 | reach the first DW_MACINFO_start_file entry. We then initialize | |
16211 | CURRENT_FILE accordingly so that any macro definition found before the | |
16212 | first DW_MACINFO_start_file can still be associated to the base file. */ | |
16213 | ||
16214 | mac_ptr = section->buffer + offset; | |
16215 | mac_end = section->buffer + section->size; | |
16216 | ||
16217 | mac_ptr = dwarf_parse_macro_header (opcode_definitions, abfd, mac_ptr, | |
16218 | &offset_size, section_is_gnu); | |
16219 | if (mac_ptr == NULL) | |
16220 | { | |
16221 | /* We already issued a complaint. */ | |
16222 | return; | |
16223 | } | |
16224 | ||
16225 | do | |
16226 | { | |
16227 | /* Do we at least have room for a macinfo type byte? */ | |
16228 | if (mac_ptr >= mac_end) | |
16229 | { | |
16230 | /* Complaint is printed during the second pass as GDB will probably | |
16231 | stop the first pass earlier upon finding | |
16232 | DW_MACINFO_start_file. */ | |
16233 | break; | |
16234 | } | |
16235 | ||
16236 | macinfo_type = read_1_byte (abfd, mac_ptr); | |
16237 | mac_ptr++; | |
16238 | ||
16239 | /* Note that we rely on the fact that the corresponding GNU and | |
16240 | DWARF constants are the same. */ | |
16241 | switch (macinfo_type) | |
16242 | { | |
16243 | /* A zero macinfo type indicates the end of the macro | |
16244 | information. */ | |
16245 | case 0: | |
16246 | break; | |
16247 | ||
16248 | case DW_MACRO_GNU_define: | |
16249 | case DW_MACRO_GNU_undef: | |
16250 | /* Only skip the data by MAC_PTR. */ | |
16251 | { | |
16252 | unsigned int bytes_read; | |
16253 | ||
16254 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
16255 | mac_ptr += bytes_read; | |
16256 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
16257 | mac_ptr += bytes_read; | |
16258 | } | |
16259 | break; | |
16260 | ||
16261 | case DW_MACRO_GNU_start_file: | |
16262 | { | |
16263 | unsigned int bytes_read; | |
16264 | int line, file; | |
16265 | ||
16266 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
16267 | mac_ptr += bytes_read; | |
16268 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
16269 | mac_ptr += bytes_read; | |
16270 | ||
16271 | current_file = macro_start_file (file, line, current_file, | |
bb5ed363 | 16272 | comp_dir, lh, objfile); |
cf2c3c16 TT |
16273 | } |
16274 | break; | |
16275 | ||
16276 | case DW_MACRO_GNU_end_file: | |
16277 | /* No data to skip by MAC_PTR. */ | |
16278 | break; | |
16279 | ||
16280 | case DW_MACRO_GNU_define_indirect: | |
16281 | case DW_MACRO_GNU_undef_indirect: | |
16282 | { | |
16283 | unsigned int bytes_read; | |
16284 | ||
16285 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
16286 | mac_ptr += bytes_read; | |
16287 | mac_ptr += offset_size; | |
16288 | } | |
16289 | break; | |
16290 | ||
16291 | case DW_MACRO_GNU_transparent_include: | |
16292 | /* Note that, according to the spec, a transparent include | |
16293 | chain cannot call DW_MACRO_GNU_start_file. So, we can just | |
16294 | skip this opcode. */ | |
16295 | mac_ptr += offset_size; | |
16296 | break; | |
16297 | ||
16298 | case DW_MACINFO_vendor_ext: | |
16299 | /* Only skip the data by MAC_PTR. */ | |
16300 | if (!section_is_gnu) | |
16301 | { | |
16302 | unsigned int bytes_read; | |
16303 | ||
16304 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
16305 | mac_ptr += bytes_read; | |
16306 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
16307 | mac_ptr += bytes_read; | |
16308 | } | |
16309 | /* FALLTHROUGH */ | |
16310 | ||
16311 | default: | |
16312 | mac_ptr = skip_unknown_opcode (macinfo_type, opcode_definitions, | |
16313 | mac_ptr, abfd, offset_size, | |
16314 | section); | |
16315 | if (mac_ptr == NULL) | |
16316 | return; | |
16317 | break; | |
16318 | } | |
16319 | } while (macinfo_type != 0 && current_file == NULL); | |
16320 | ||
16321 | /* Second pass: Process all entries. | |
16322 | ||
16323 | Use the AT_COMMAND_LINE flag to determine whether we are still processing | |
16324 | command-line macro definitions/undefinitions. This flag is unset when we | |
16325 | reach the first DW_MACINFO_start_file entry. */ | |
16326 | ||
8fc3fc34 TT |
16327 | include_hash = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, |
16328 | NULL, xcalloc, xfree); | |
16329 | cleanup = make_cleanup_htab_delete (include_hash); | |
16330 | mac_ptr = section->buffer + offset; | |
16331 | slot = htab_find_slot (include_hash, mac_ptr, INSERT); | |
16332 | *slot = mac_ptr; | |
16333 | dwarf_decode_macro_bytes (abfd, mac_ptr, mac_end, | |
cf2c3c16 | 16334 | current_file, lh, comp_dir, section, section_is_gnu, |
8fc3fc34 TT |
16335 | offset_size, objfile, include_hash); |
16336 | do_cleanups (cleanup); | |
cf2c3c16 TT |
16337 | } |
16338 | ||
8e19ed76 | 16339 | /* Check if the attribute's form is a DW_FORM_block* |
0963b4bd | 16340 | if so return true else false. */ |
380bca97 | 16341 | |
8e19ed76 PS |
16342 | static int |
16343 | attr_form_is_block (struct attribute *attr) | |
16344 | { | |
16345 | return (attr == NULL ? 0 : | |
16346 | attr->form == DW_FORM_block1 | |
16347 | || attr->form == DW_FORM_block2 | |
16348 | || attr->form == DW_FORM_block4 | |
2dc7f7b3 TT |
16349 | || attr->form == DW_FORM_block |
16350 | || attr->form == DW_FORM_exprloc); | |
8e19ed76 | 16351 | } |
4c2df51b | 16352 | |
c6a0999f JB |
16353 | /* Return non-zero if ATTR's value is a section offset --- classes |
16354 | lineptr, loclistptr, macptr or rangelistptr --- or zero, otherwise. | |
16355 | You may use DW_UNSND (attr) to retrieve such offsets. | |
16356 | ||
16357 | Section 7.5.4, "Attribute Encodings", explains that no attribute | |
16358 | may have a value that belongs to more than one of these classes; it | |
16359 | would be ambiguous if we did, because we use the same forms for all | |
16360 | of them. */ | |
380bca97 | 16361 | |
3690dd37 JB |
16362 | static int |
16363 | attr_form_is_section_offset (struct attribute *attr) | |
16364 | { | |
16365 | return (attr->form == DW_FORM_data4 | |
2dc7f7b3 TT |
16366 | || attr->form == DW_FORM_data8 |
16367 | || attr->form == DW_FORM_sec_offset); | |
3690dd37 JB |
16368 | } |
16369 | ||
3690dd37 JB |
16370 | /* Return non-zero if ATTR's value falls in the 'constant' class, or |
16371 | zero otherwise. When this function returns true, you can apply | |
16372 | dwarf2_get_attr_constant_value to it. | |
16373 | ||
16374 | However, note that for some attributes you must check | |
16375 | attr_form_is_section_offset before using this test. DW_FORM_data4 | |
16376 | and DW_FORM_data8 are members of both the constant class, and of | |
16377 | the classes that contain offsets into other debug sections | |
16378 | (lineptr, loclistptr, macptr or rangelistptr). The DWARF spec says | |
16379 | that, if an attribute's can be either a constant or one of the | |
16380 | section offset classes, DW_FORM_data4 and DW_FORM_data8 should be | |
16381 | taken as section offsets, not constants. */ | |
380bca97 | 16382 | |
3690dd37 JB |
16383 | static int |
16384 | attr_form_is_constant (struct attribute *attr) | |
16385 | { | |
16386 | switch (attr->form) | |
16387 | { | |
16388 | case DW_FORM_sdata: | |
16389 | case DW_FORM_udata: | |
16390 | case DW_FORM_data1: | |
16391 | case DW_FORM_data2: | |
16392 | case DW_FORM_data4: | |
16393 | case DW_FORM_data8: | |
16394 | return 1; | |
16395 | default: | |
16396 | return 0; | |
16397 | } | |
16398 | } | |
16399 | ||
3019eac3 DE |
16400 | /* Return the .debug_loc section to use for CU. |
16401 | For DWO files use .debug_loc.dwo. */ | |
16402 | ||
16403 | static struct dwarf2_section_info * | |
16404 | cu_debug_loc_section (struct dwarf2_cu *cu) | |
16405 | { | |
16406 | if (cu->dwo_unit) | |
16407 | return &cu->dwo_unit->dwo_file->sections.loc; | |
16408 | return &dwarf2_per_objfile->loc; | |
16409 | } | |
16410 | ||
8cf6f0b1 TT |
16411 | /* A helper function that fills in a dwarf2_loclist_baton. */ |
16412 | ||
16413 | static void | |
16414 | fill_in_loclist_baton (struct dwarf2_cu *cu, | |
16415 | struct dwarf2_loclist_baton *baton, | |
16416 | struct attribute *attr) | |
16417 | { | |
3019eac3 DE |
16418 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
16419 | ||
16420 | dwarf2_read_section (dwarf2_per_objfile->objfile, section); | |
8cf6f0b1 TT |
16421 | |
16422 | baton->per_cu = cu->per_cu; | |
16423 | gdb_assert (baton->per_cu); | |
16424 | /* We don't know how long the location list is, but make sure we | |
16425 | don't run off the edge of the section. */ | |
3019eac3 DE |
16426 | baton->size = section->size - DW_UNSND (attr); |
16427 | baton->data = section->buffer + DW_UNSND (attr); | |
8cf6f0b1 TT |
16428 | baton->base_address = cu->base_address; |
16429 | } | |
16430 | ||
4c2df51b DJ |
16431 | static void |
16432 | dwarf2_symbol_mark_computed (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 16433 | struct dwarf2_cu *cu) |
4c2df51b | 16434 | { |
bb5ed363 | 16435 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3019eac3 | 16436 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
bb5ed363 | 16437 | |
3690dd37 | 16438 | if (attr_form_is_section_offset (attr) |
3019eac3 | 16439 | /* .debug_loc{,.dwo} may not exist at all, or the offset may be outside |
99bcc461 DJ |
16440 | the section. If so, fall through to the complaint in the |
16441 | other branch. */ | |
3019eac3 | 16442 | && DW_UNSND (attr) < dwarf2_section_size (objfile, section)) |
4c2df51b | 16443 | { |
0d53c4c4 | 16444 | struct dwarf2_loclist_baton *baton; |
4c2df51b | 16445 | |
bb5ed363 | 16446 | baton = obstack_alloc (&objfile->objfile_obstack, |
0d53c4c4 | 16447 | sizeof (struct dwarf2_loclist_baton)); |
4c2df51b | 16448 | |
8cf6f0b1 | 16449 | fill_in_loclist_baton (cu, baton, attr); |
be391dca | 16450 | |
d00adf39 | 16451 | if (cu->base_known == 0) |
0d53c4c4 | 16452 | complaint (&symfile_complaints, |
3e43a32a MS |
16453 | _("Location list used without " |
16454 | "specifying the CU base address.")); | |
4c2df51b | 16455 | |
768a979c | 16456 | SYMBOL_COMPUTED_OPS (sym) = &dwarf2_loclist_funcs; |
0d53c4c4 DJ |
16457 | SYMBOL_LOCATION_BATON (sym) = baton; |
16458 | } | |
16459 | else | |
16460 | { | |
16461 | struct dwarf2_locexpr_baton *baton; | |
16462 | ||
bb5ed363 | 16463 | baton = obstack_alloc (&objfile->objfile_obstack, |
0d53c4c4 | 16464 | sizeof (struct dwarf2_locexpr_baton)); |
ae0d2f24 UW |
16465 | baton->per_cu = cu->per_cu; |
16466 | gdb_assert (baton->per_cu); | |
0d53c4c4 DJ |
16467 | |
16468 | if (attr_form_is_block (attr)) | |
16469 | { | |
16470 | /* Note that we're just copying the block's data pointer | |
16471 | here, not the actual data. We're still pointing into the | |
6502dd73 DJ |
16472 | info_buffer for SYM's objfile; right now we never release |
16473 | that buffer, but when we do clean up properly this may | |
16474 | need to change. */ | |
0d53c4c4 DJ |
16475 | baton->size = DW_BLOCK (attr)->size; |
16476 | baton->data = DW_BLOCK (attr)->data; | |
16477 | } | |
16478 | else | |
16479 | { | |
16480 | dwarf2_invalid_attrib_class_complaint ("location description", | |
16481 | SYMBOL_NATURAL_NAME (sym)); | |
16482 | baton->size = 0; | |
0d53c4c4 | 16483 | } |
6e70227d | 16484 | |
768a979c | 16485 | SYMBOL_COMPUTED_OPS (sym) = &dwarf2_locexpr_funcs; |
0d53c4c4 DJ |
16486 | SYMBOL_LOCATION_BATON (sym) = baton; |
16487 | } | |
4c2df51b | 16488 | } |
6502dd73 | 16489 | |
9aa1f1e3 TT |
16490 | /* Return the OBJFILE associated with the compilation unit CU. If CU |
16491 | came from a separate debuginfo file, then the master objfile is | |
16492 | returned. */ | |
ae0d2f24 UW |
16493 | |
16494 | struct objfile * | |
16495 | dwarf2_per_cu_objfile (struct dwarf2_per_cu_data *per_cu) | |
16496 | { | |
9291a0cd | 16497 | struct objfile *objfile = per_cu->objfile; |
ae0d2f24 UW |
16498 | |
16499 | /* Return the master objfile, so that we can report and look up the | |
16500 | correct file containing this variable. */ | |
16501 | if (objfile->separate_debug_objfile_backlink) | |
16502 | objfile = objfile->separate_debug_objfile_backlink; | |
16503 | ||
16504 | return objfile; | |
16505 | } | |
16506 | ||
96408a79 SA |
16507 | /* Return comp_unit_head for PER_CU, either already available in PER_CU->CU |
16508 | (CU_HEADERP is unused in such case) or prepare a temporary copy at | |
16509 | CU_HEADERP first. */ | |
16510 | ||
16511 | static const struct comp_unit_head * | |
16512 | per_cu_header_read_in (struct comp_unit_head *cu_headerp, | |
16513 | struct dwarf2_per_cu_data *per_cu) | |
16514 | { | |
16515 | struct objfile *objfile; | |
16516 | struct dwarf2_per_objfile *per_objfile; | |
16517 | gdb_byte *info_ptr; | |
16518 | ||
16519 | if (per_cu->cu) | |
16520 | return &per_cu->cu->header; | |
16521 | ||
16522 | objfile = per_cu->objfile; | |
16523 | per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); | |
b64f50a1 | 16524 | info_ptr = per_objfile->info.buffer + per_cu->offset.sect_off; |
96408a79 SA |
16525 | |
16526 | memset (cu_headerp, 0, sizeof (*cu_headerp)); | |
16527 | read_comp_unit_head (cu_headerp, info_ptr, objfile->obfd); | |
16528 | ||
16529 | return cu_headerp; | |
16530 | } | |
16531 | ||
ae0d2f24 UW |
16532 | /* Return the address size given in the compilation unit header for CU. */ |
16533 | ||
98714339 | 16534 | int |
ae0d2f24 UW |
16535 | dwarf2_per_cu_addr_size (struct dwarf2_per_cu_data *per_cu) |
16536 | { | |
96408a79 SA |
16537 | struct comp_unit_head cu_header_local; |
16538 | const struct comp_unit_head *cu_headerp; | |
c471e790 | 16539 | |
96408a79 SA |
16540 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); |
16541 | ||
16542 | return cu_headerp->addr_size; | |
ae0d2f24 UW |
16543 | } |
16544 | ||
9eae7c52 TT |
16545 | /* Return the offset size given in the compilation unit header for CU. */ |
16546 | ||
16547 | int | |
16548 | dwarf2_per_cu_offset_size (struct dwarf2_per_cu_data *per_cu) | |
16549 | { | |
96408a79 SA |
16550 | struct comp_unit_head cu_header_local; |
16551 | const struct comp_unit_head *cu_headerp; | |
9c6c53f7 | 16552 | |
96408a79 SA |
16553 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); |
16554 | ||
16555 | return cu_headerp->offset_size; | |
16556 | } | |
16557 | ||
16558 | /* See its dwarf2loc.h declaration. */ | |
16559 | ||
16560 | int | |
16561 | dwarf2_per_cu_ref_addr_size (struct dwarf2_per_cu_data *per_cu) | |
16562 | { | |
16563 | struct comp_unit_head cu_header_local; | |
16564 | const struct comp_unit_head *cu_headerp; | |
16565 | ||
16566 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); | |
16567 | ||
16568 | if (cu_headerp->version == 2) | |
16569 | return cu_headerp->addr_size; | |
16570 | else | |
16571 | return cu_headerp->offset_size; | |
181cebd4 JK |
16572 | } |
16573 | ||
9aa1f1e3 TT |
16574 | /* Return the text offset of the CU. The returned offset comes from |
16575 | this CU's objfile. If this objfile came from a separate debuginfo | |
16576 | file, then the offset may be different from the corresponding | |
16577 | offset in the parent objfile. */ | |
16578 | ||
16579 | CORE_ADDR | |
16580 | dwarf2_per_cu_text_offset (struct dwarf2_per_cu_data *per_cu) | |
16581 | { | |
bb3fa9d0 | 16582 | struct objfile *objfile = per_cu->objfile; |
9aa1f1e3 TT |
16583 | |
16584 | return ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
16585 | } | |
16586 | ||
348e048f DE |
16587 | /* Locate the .debug_info compilation unit from CU's objfile which contains |
16588 | the DIE at OFFSET. Raises an error on failure. */ | |
ae038cb0 DJ |
16589 | |
16590 | static struct dwarf2_per_cu_data * | |
b64f50a1 | 16591 | dwarf2_find_containing_comp_unit (sect_offset offset, |
ae038cb0 DJ |
16592 | struct objfile *objfile) |
16593 | { | |
16594 | struct dwarf2_per_cu_data *this_cu; | |
16595 | int low, high; | |
16596 | ||
ae038cb0 DJ |
16597 | low = 0; |
16598 | high = dwarf2_per_objfile->n_comp_units - 1; | |
16599 | while (high > low) | |
16600 | { | |
16601 | int mid = low + (high - low) / 2; | |
9a619af0 | 16602 | |
b64f50a1 JK |
16603 | if (dwarf2_per_objfile->all_comp_units[mid]->offset.sect_off |
16604 | >= offset.sect_off) | |
ae038cb0 DJ |
16605 | high = mid; |
16606 | else | |
16607 | low = mid + 1; | |
16608 | } | |
16609 | gdb_assert (low == high); | |
b64f50a1 JK |
16610 | if (dwarf2_per_objfile->all_comp_units[low]->offset.sect_off |
16611 | > offset.sect_off) | |
ae038cb0 | 16612 | { |
10b3939b | 16613 | if (low == 0) |
8a3fe4f8 AC |
16614 | error (_("Dwarf Error: could not find partial DIE containing " |
16615 | "offset 0x%lx [in module %s]"), | |
b64f50a1 | 16616 | (long) offset.sect_off, bfd_get_filename (objfile->obfd)); |
10b3939b | 16617 | |
b64f50a1 JK |
16618 | gdb_assert (dwarf2_per_objfile->all_comp_units[low-1]->offset.sect_off |
16619 | <= offset.sect_off); | |
ae038cb0 DJ |
16620 | return dwarf2_per_objfile->all_comp_units[low-1]; |
16621 | } | |
16622 | else | |
16623 | { | |
16624 | this_cu = dwarf2_per_objfile->all_comp_units[low]; | |
16625 | if (low == dwarf2_per_objfile->n_comp_units - 1 | |
b64f50a1 JK |
16626 | && offset.sect_off >= this_cu->offset.sect_off + this_cu->length) |
16627 | error (_("invalid dwarf2 offset %u"), offset.sect_off); | |
16628 | gdb_assert (offset.sect_off < this_cu->offset.sect_off + this_cu->length); | |
ae038cb0 DJ |
16629 | return this_cu; |
16630 | } | |
16631 | } | |
16632 | ||
23745b47 | 16633 | /* Initialize dwarf2_cu CU, owned by PER_CU. */ |
93311388 | 16634 | |
9816fde3 | 16635 | static void |
23745b47 | 16636 | init_one_comp_unit (struct dwarf2_cu *cu, struct dwarf2_per_cu_data *per_cu) |
93311388 | 16637 | { |
9816fde3 | 16638 | memset (cu, 0, sizeof (*cu)); |
23745b47 DE |
16639 | per_cu->cu = cu; |
16640 | cu->per_cu = per_cu; | |
16641 | cu->objfile = per_cu->objfile; | |
93311388 | 16642 | obstack_init (&cu->comp_unit_obstack); |
9816fde3 JK |
16643 | } |
16644 | ||
16645 | /* Initialize basic fields of dwarf_cu CU according to DIE COMP_UNIT_DIE. */ | |
16646 | ||
16647 | static void | |
95554aad TT |
16648 | prepare_one_comp_unit (struct dwarf2_cu *cu, struct die_info *comp_unit_die, |
16649 | enum language pretend_language) | |
9816fde3 JK |
16650 | { |
16651 | struct attribute *attr; | |
16652 | ||
16653 | /* Set the language we're debugging. */ | |
16654 | attr = dwarf2_attr (comp_unit_die, DW_AT_language, cu); | |
16655 | if (attr) | |
16656 | set_cu_language (DW_UNSND (attr), cu); | |
16657 | else | |
9cded63f | 16658 | { |
95554aad | 16659 | cu->language = pretend_language; |
9cded63f TT |
16660 | cu->language_defn = language_def (cu->language); |
16661 | } | |
dee91e82 DE |
16662 | |
16663 | attr = dwarf2_attr (comp_unit_die, DW_AT_producer, cu); | |
16664 | if (attr) | |
16665 | cu->producer = DW_STRING (attr); | |
93311388 DE |
16666 | } |
16667 | ||
ae038cb0 DJ |
16668 | /* Release one cached compilation unit, CU. We unlink it from the tree |
16669 | of compilation units, but we don't remove it from the read_in_chain; | |
93311388 DE |
16670 | the caller is responsible for that. |
16671 | NOTE: DATA is a void * because this function is also used as a | |
16672 | cleanup routine. */ | |
ae038cb0 DJ |
16673 | |
16674 | static void | |
68dc6402 | 16675 | free_heap_comp_unit (void *data) |
ae038cb0 DJ |
16676 | { |
16677 | struct dwarf2_cu *cu = data; | |
16678 | ||
23745b47 DE |
16679 | gdb_assert (cu->per_cu != NULL); |
16680 | cu->per_cu->cu = NULL; | |
ae038cb0 DJ |
16681 | cu->per_cu = NULL; |
16682 | ||
16683 | obstack_free (&cu->comp_unit_obstack, NULL); | |
16684 | ||
16685 | xfree (cu); | |
16686 | } | |
16687 | ||
72bf9492 | 16688 | /* This cleanup function is passed the address of a dwarf2_cu on the stack |
ae038cb0 | 16689 | when we're finished with it. We can't free the pointer itself, but be |
dee91e82 | 16690 | sure to unlink it from the cache. Also release any associated storage. */ |
72bf9492 DJ |
16691 | |
16692 | static void | |
16693 | free_stack_comp_unit (void *data) | |
16694 | { | |
16695 | struct dwarf2_cu *cu = data; | |
16696 | ||
23745b47 DE |
16697 | gdb_assert (cu->per_cu != NULL); |
16698 | cu->per_cu->cu = NULL; | |
16699 | cu->per_cu = NULL; | |
16700 | ||
72bf9492 DJ |
16701 | obstack_free (&cu->comp_unit_obstack, NULL); |
16702 | cu->partial_dies = NULL; | |
ae038cb0 DJ |
16703 | } |
16704 | ||
16705 | /* Free all cached compilation units. */ | |
16706 | ||
16707 | static void | |
16708 | free_cached_comp_units (void *data) | |
16709 | { | |
16710 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
16711 | ||
16712 | per_cu = dwarf2_per_objfile->read_in_chain; | |
16713 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
16714 | while (per_cu != NULL) | |
16715 | { | |
16716 | struct dwarf2_per_cu_data *next_cu; | |
16717 | ||
16718 | next_cu = per_cu->cu->read_in_chain; | |
16719 | ||
68dc6402 | 16720 | free_heap_comp_unit (per_cu->cu); |
ae038cb0 DJ |
16721 | *last_chain = next_cu; |
16722 | ||
16723 | per_cu = next_cu; | |
16724 | } | |
16725 | } | |
16726 | ||
16727 | /* Increase the age counter on each cached compilation unit, and free | |
16728 | any that are too old. */ | |
16729 | ||
16730 | static void | |
16731 | age_cached_comp_units (void) | |
16732 | { | |
16733 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
16734 | ||
16735 | dwarf2_clear_marks (dwarf2_per_objfile->read_in_chain); | |
16736 | per_cu = dwarf2_per_objfile->read_in_chain; | |
16737 | while (per_cu != NULL) | |
16738 | { | |
16739 | per_cu->cu->last_used ++; | |
16740 | if (per_cu->cu->last_used <= dwarf2_max_cache_age) | |
16741 | dwarf2_mark (per_cu->cu); | |
16742 | per_cu = per_cu->cu->read_in_chain; | |
16743 | } | |
16744 | ||
16745 | per_cu = dwarf2_per_objfile->read_in_chain; | |
16746 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
16747 | while (per_cu != NULL) | |
16748 | { | |
16749 | struct dwarf2_per_cu_data *next_cu; | |
16750 | ||
16751 | next_cu = per_cu->cu->read_in_chain; | |
16752 | ||
16753 | if (!per_cu->cu->mark) | |
16754 | { | |
68dc6402 | 16755 | free_heap_comp_unit (per_cu->cu); |
ae038cb0 DJ |
16756 | *last_chain = next_cu; |
16757 | } | |
16758 | else | |
16759 | last_chain = &per_cu->cu->read_in_chain; | |
16760 | ||
16761 | per_cu = next_cu; | |
16762 | } | |
16763 | } | |
16764 | ||
16765 | /* Remove a single compilation unit from the cache. */ | |
16766 | ||
16767 | static void | |
dee91e82 | 16768 | free_one_cached_comp_unit (struct dwarf2_per_cu_data *target_per_cu) |
ae038cb0 DJ |
16769 | { |
16770 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
16771 | ||
16772 | per_cu = dwarf2_per_objfile->read_in_chain; | |
16773 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
16774 | while (per_cu != NULL) | |
16775 | { | |
16776 | struct dwarf2_per_cu_data *next_cu; | |
16777 | ||
16778 | next_cu = per_cu->cu->read_in_chain; | |
16779 | ||
dee91e82 | 16780 | if (per_cu == target_per_cu) |
ae038cb0 | 16781 | { |
68dc6402 | 16782 | free_heap_comp_unit (per_cu->cu); |
dee91e82 | 16783 | per_cu->cu = NULL; |
ae038cb0 DJ |
16784 | *last_chain = next_cu; |
16785 | break; | |
16786 | } | |
16787 | else | |
16788 | last_chain = &per_cu->cu->read_in_chain; | |
16789 | ||
16790 | per_cu = next_cu; | |
16791 | } | |
16792 | } | |
16793 | ||
fe3e1990 DJ |
16794 | /* Release all extra memory associated with OBJFILE. */ |
16795 | ||
16796 | void | |
16797 | dwarf2_free_objfile (struct objfile *objfile) | |
16798 | { | |
16799 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); | |
16800 | ||
16801 | if (dwarf2_per_objfile == NULL) | |
16802 | return; | |
16803 | ||
16804 | /* Cached DIE trees use xmalloc and the comp_unit_obstack. */ | |
16805 | free_cached_comp_units (NULL); | |
16806 | ||
7b9f3c50 DE |
16807 | if (dwarf2_per_objfile->quick_file_names_table) |
16808 | htab_delete (dwarf2_per_objfile->quick_file_names_table); | |
9291a0cd | 16809 | |
fe3e1990 DJ |
16810 | /* Everything else should be on the objfile obstack. */ |
16811 | } | |
16812 | ||
dee91e82 DE |
16813 | /* A set of CU "per_cu" pointer, DIE offset, and GDB type pointer. |
16814 | We store these in a hash table separate from the DIEs, and preserve them | |
16815 | when the DIEs are flushed out of cache. | |
16816 | ||
16817 | The CU "per_cu" pointer is needed because offset alone is not enough to | |
3019eac3 DE |
16818 | uniquely identify the type. A file may have multiple .debug_types sections, |
16819 | or the type may come from a DWO file. We have to use something in | |
16820 | dwarf2_per_cu_data (or the pointer to it) because we can enter the lookup | |
16821 | routine, get_die_type_at_offset, from outside this file, and thus won't | |
16822 | necessarily have PER_CU->cu. Fortunately, PER_CU is stable for the life | |
16823 | of the objfile. */ | |
1c379e20 | 16824 | |
dee91e82 | 16825 | struct dwarf2_per_cu_offset_and_type |
1c379e20 | 16826 | { |
dee91e82 | 16827 | const struct dwarf2_per_cu_data *per_cu; |
b64f50a1 | 16828 | sect_offset offset; |
1c379e20 DJ |
16829 | struct type *type; |
16830 | }; | |
16831 | ||
dee91e82 | 16832 | /* Hash function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
16833 | |
16834 | static hashval_t | |
dee91e82 | 16835 | per_cu_offset_and_type_hash (const void *item) |
1c379e20 | 16836 | { |
dee91e82 | 16837 | const struct dwarf2_per_cu_offset_and_type *ofs = item; |
9a619af0 | 16838 | |
dee91e82 | 16839 | return (uintptr_t) ofs->per_cu + ofs->offset.sect_off; |
1c379e20 DJ |
16840 | } |
16841 | ||
dee91e82 | 16842 | /* Equality function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
16843 | |
16844 | static int | |
dee91e82 | 16845 | per_cu_offset_and_type_eq (const void *item_lhs, const void *item_rhs) |
1c379e20 | 16846 | { |
dee91e82 DE |
16847 | const struct dwarf2_per_cu_offset_and_type *ofs_lhs = item_lhs; |
16848 | const struct dwarf2_per_cu_offset_and_type *ofs_rhs = item_rhs; | |
9a619af0 | 16849 | |
dee91e82 DE |
16850 | return (ofs_lhs->per_cu == ofs_rhs->per_cu |
16851 | && ofs_lhs->offset.sect_off == ofs_rhs->offset.sect_off); | |
1c379e20 DJ |
16852 | } |
16853 | ||
16854 | /* Set the type associated with DIE to TYPE. Save it in CU's hash | |
7e314c57 JK |
16855 | table if necessary. For convenience, return TYPE. |
16856 | ||
16857 | The DIEs reading must have careful ordering to: | |
16858 | * Not cause infite loops trying to read in DIEs as a prerequisite for | |
16859 | reading current DIE. | |
16860 | * Not trying to dereference contents of still incompletely read in types | |
16861 | while reading in other DIEs. | |
16862 | * Enable referencing still incompletely read in types just by a pointer to | |
16863 | the type without accessing its fields. | |
16864 | ||
16865 | Therefore caller should follow these rules: | |
16866 | * Try to fetch any prerequisite types we may need to build this DIE type | |
16867 | before building the type and calling set_die_type. | |
e71ec853 | 16868 | * After building type call set_die_type for current DIE as soon as |
7e314c57 JK |
16869 | possible before fetching more types to complete the current type. |
16870 | * Make the type as complete as possible before fetching more types. */ | |
1c379e20 | 16871 | |
f792889a | 16872 | static struct type * |
1c379e20 DJ |
16873 | set_die_type (struct die_info *die, struct type *type, struct dwarf2_cu *cu) |
16874 | { | |
dee91e82 | 16875 | struct dwarf2_per_cu_offset_and_type **slot, ofs; |
673bfd45 | 16876 | struct objfile *objfile = cu->objfile; |
1c379e20 | 16877 | |
b4ba55a1 JB |
16878 | /* For Ada types, make sure that the gnat-specific data is always |
16879 | initialized (if not already set). There are a few types where | |
16880 | we should not be doing so, because the type-specific area is | |
16881 | already used to hold some other piece of info (eg: TYPE_CODE_FLT | |
16882 | where the type-specific area is used to store the floatformat). | |
16883 | But this is not a problem, because the gnat-specific information | |
16884 | is actually not needed for these types. */ | |
16885 | if (need_gnat_info (cu) | |
16886 | && TYPE_CODE (type) != TYPE_CODE_FUNC | |
16887 | && TYPE_CODE (type) != TYPE_CODE_FLT | |
16888 | && !HAVE_GNAT_AUX_INFO (type)) | |
16889 | INIT_GNAT_SPECIFIC (type); | |
16890 | ||
dee91e82 | 16891 | if (dwarf2_per_objfile->die_type_hash == NULL) |
f792889a | 16892 | { |
dee91e82 DE |
16893 | dwarf2_per_objfile->die_type_hash = |
16894 | htab_create_alloc_ex (127, | |
16895 | per_cu_offset_and_type_hash, | |
16896 | per_cu_offset_and_type_eq, | |
16897 | NULL, | |
16898 | &objfile->objfile_obstack, | |
16899 | hashtab_obstack_allocate, | |
16900 | dummy_obstack_deallocate); | |
f792889a | 16901 | } |
1c379e20 | 16902 | |
dee91e82 | 16903 | ofs.per_cu = cu->per_cu; |
1c379e20 DJ |
16904 | ofs.offset = die->offset; |
16905 | ofs.type = type; | |
dee91e82 DE |
16906 | slot = (struct dwarf2_per_cu_offset_and_type **) |
16907 | htab_find_slot (dwarf2_per_objfile->die_type_hash, &ofs, INSERT); | |
7e314c57 JK |
16908 | if (*slot) |
16909 | complaint (&symfile_complaints, | |
16910 | _("A problem internal to GDB: DIE 0x%x has type already set"), | |
b64f50a1 | 16911 | die->offset.sect_off); |
673bfd45 | 16912 | *slot = obstack_alloc (&objfile->objfile_obstack, sizeof (**slot)); |
1c379e20 | 16913 | **slot = ofs; |
f792889a | 16914 | return type; |
1c379e20 DJ |
16915 | } |
16916 | ||
380bca97 | 16917 | /* Look up the type for the die at OFFSET in the appropriate type_hash |
673bfd45 | 16918 | table, or return NULL if the die does not have a saved type. */ |
1c379e20 DJ |
16919 | |
16920 | static struct type * | |
b64f50a1 | 16921 | get_die_type_at_offset (sect_offset offset, |
673bfd45 | 16922 | struct dwarf2_per_cu_data *per_cu) |
1c379e20 | 16923 | { |
dee91e82 | 16924 | struct dwarf2_per_cu_offset_and_type *slot, ofs; |
f792889a | 16925 | |
dee91e82 | 16926 | if (dwarf2_per_objfile->die_type_hash == NULL) |
f792889a | 16927 | return NULL; |
1c379e20 | 16928 | |
dee91e82 | 16929 | ofs.per_cu = per_cu; |
673bfd45 | 16930 | ofs.offset = offset; |
dee91e82 | 16931 | slot = htab_find (dwarf2_per_objfile->die_type_hash, &ofs); |
1c379e20 DJ |
16932 | if (slot) |
16933 | return slot->type; | |
16934 | else | |
16935 | return NULL; | |
16936 | } | |
16937 | ||
673bfd45 DE |
16938 | /* Look up the type for DIE in the appropriate type_hash table, |
16939 | or return NULL if DIE does not have a saved type. */ | |
16940 | ||
16941 | static struct type * | |
16942 | get_die_type (struct die_info *die, struct dwarf2_cu *cu) | |
16943 | { | |
16944 | return get_die_type_at_offset (die->offset, cu->per_cu); | |
16945 | } | |
16946 | ||
10b3939b DJ |
16947 | /* Add a dependence relationship from CU to REF_PER_CU. */ |
16948 | ||
16949 | static void | |
16950 | dwarf2_add_dependence (struct dwarf2_cu *cu, | |
16951 | struct dwarf2_per_cu_data *ref_per_cu) | |
16952 | { | |
16953 | void **slot; | |
16954 | ||
16955 | if (cu->dependencies == NULL) | |
16956 | cu->dependencies | |
16957 | = htab_create_alloc_ex (5, htab_hash_pointer, htab_eq_pointer, | |
16958 | NULL, &cu->comp_unit_obstack, | |
16959 | hashtab_obstack_allocate, | |
16960 | dummy_obstack_deallocate); | |
16961 | ||
16962 | slot = htab_find_slot (cu->dependencies, ref_per_cu, INSERT); | |
16963 | if (*slot == NULL) | |
16964 | *slot = ref_per_cu; | |
16965 | } | |
1c379e20 | 16966 | |
f504f079 DE |
16967 | /* Subroutine of dwarf2_mark to pass to htab_traverse. |
16968 | Set the mark field in every compilation unit in the | |
ae038cb0 DJ |
16969 | cache that we must keep because we are keeping CU. */ |
16970 | ||
10b3939b DJ |
16971 | static int |
16972 | dwarf2_mark_helper (void **slot, void *data) | |
16973 | { | |
16974 | struct dwarf2_per_cu_data *per_cu; | |
16975 | ||
16976 | per_cu = (struct dwarf2_per_cu_data *) *slot; | |
d07ed419 JK |
16977 | |
16978 | /* cu->dependencies references may not yet have been ever read if QUIT aborts | |
16979 | reading of the chain. As such dependencies remain valid it is not much | |
16980 | useful to track and undo them during QUIT cleanups. */ | |
16981 | if (per_cu->cu == NULL) | |
16982 | return 1; | |
16983 | ||
10b3939b DJ |
16984 | if (per_cu->cu->mark) |
16985 | return 1; | |
16986 | per_cu->cu->mark = 1; | |
16987 | ||
16988 | if (per_cu->cu->dependencies != NULL) | |
16989 | htab_traverse (per_cu->cu->dependencies, dwarf2_mark_helper, NULL); | |
16990 | ||
16991 | return 1; | |
16992 | } | |
16993 | ||
f504f079 DE |
16994 | /* Set the mark field in CU and in every other compilation unit in the |
16995 | cache that we must keep because we are keeping CU. */ | |
16996 | ||
ae038cb0 DJ |
16997 | static void |
16998 | dwarf2_mark (struct dwarf2_cu *cu) | |
16999 | { | |
17000 | if (cu->mark) | |
17001 | return; | |
17002 | cu->mark = 1; | |
10b3939b DJ |
17003 | if (cu->dependencies != NULL) |
17004 | htab_traverse (cu->dependencies, dwarf2_mark_helper, NULL); | |
ae038cb0 DJ |
17005 | } |
17006 | ||
17007 | static void | |
17008 | dwarf2_clear_marks (struct dwarf2_per_cu_data *per_cu) | |
17009 | { | |
17010 | while (per_cu) | |
17011 | { | |
17012 | per_cu->cu->mark = 0; | |
17013 | per_cu = per_cu->cu->read_in_chain; | |
17014 | } | |
72bf9492 DJ |
17015 | } |
17016 | ||
72bf9492 DJ |
17017 | /* Trivial hash function for partial_die_info: the hash value of a DIE |
17018 | is its offset in .debug_info for this objfile. */ | |
17019 | ||
17020 | static hashval_t | |
17021 | partial_die_hash (const void *item) | |
17022 | { | |
17023 | const struct partial_die_info *part_die = item; | |
9a619af0 | 17024 | |
b64f50a1 | 17025 | return part_die->offset.sect_off; |
72bf9492 DJ |
17026 | } |
17027 | ||
17028 | /* Trivial comparison function for partial_die_info structures: two DIEs | |
17029 | are equal if they have the same offset. */ | |
17030 | ||
17031 | static int | |
17032 | partial_die_eq (const void *item_lhs, const void *item_rhs) | |
17033 | { | |
17034 | const struct partial_die_info *part_die_lhs = item_lhs; | |
17035 | const struct partial_die_info *part_die_rhs = item_rhs; | |
9a619af0 | 17036 | |
b64f50a1 | 17037 | return part_die_lhs->offset.sect_off == part_die_rhs->offset.sect_off; |
72bf9492 DJ |
17038 | } |
17039 | ||
ae038cb0 DJ |
17040 | static struct cmd_list_element *set_dwarf2_cmdlist; |
17041 | static struct cmd_list_element *show_dwarf2_cmdlist; | |
17042 | ||
17043 | static void | |
17044 | set_dwarf2_cmd (char *args, int from_tty) | |
17045 | { | |
17046 | help_list (set_dwarf2_cmdlist, "maintenance set dwarf2 ", -1, gdb_stdout); | |
17047 | } | |
17048 | ||
17049 | static void | |
17050 | show_dwarf2_cmd (char *args, int from_tty) | |
6e70227d | 17051 | { |
ae038cb0 DJ |
17052 | cmd_show_list (show_dwarf2_cmdlist, from_tty, ""); |
17053 | } | |
17054 | ||
dce234bc PP |
17055 | /* If section described by INFO was mmapped, munmap it now. */ |
17056 | ||
17057 | static void | |
17058 | munmap_section_buffer (struct dwarf2_section_info *info) | |
17059 | { | |
b315ab21 | 17060 | if (info->map_addr != NULL) |
dce234bc PP |
17061 | { |
17062 | #ifdef HAVE_MMAP | |
b315ab21 | 17063 | int res; |
9a619af0 | 17064 | |
b315ab21 TG |
17065 | res = munmap (info->map_addr, info->map_len); |
17066 | gdb_assert (res == 0); | |
dce234bc PP |
17067 | #else |
17068 | /* Without HAVE_MMAP, we should never be here to begin with. */ | |
f3574227 | 17069 | gdb_assert_not_reached ("no mmap support"); |
dce234bc PP |
17070 | #endif |
17071 | } | |
17072 | } | |
17073 | ||
17074 | /* munmap debug sections for OBJFILE, if necessary. */ | |
17075 | ||
17076 | static void | |
c1bd65d0 | 17077 | dwarf2_per_objfile_free (struct objfile *objfile, void *d) |
dce234bc PP |
17078 | { |
17079 | struct dwarf2_per_objfile *data = d; | |
8b70b953 TT |
17080 | int ix; |
17081 | struct dwarf2_section_info *section; | |
9a619af0 | 17082 | |
16be1145 DE |
17083 | /* This is sorted according to the order they're defined in to make it easier |
17084 | to keep in sync. */ | |
dce234bc PP |
17085 | munmap_section_buffer (&data->info); |
17086 | munmap_section_buffer (&data->abbrev); | |
17087 | munmap_section_buffer (&data->line); | |
16be1145 | 17088 | munmap_section_buffer (&data->loc); |
dce234bc | 17089 | munmap_section_buffer (&data->macinfo); |
cf2c3c16 | 17090 | munmap_section_buffer (&data->macro); |
16be1145 | 17091 | munmap_section_buffer (&data->str); |
dce234bc | 17092 | munmap_section_buffer (&data->ranges); |
3019eac3 | 17093 | munmap_section_buffer (&data->addr); |
dce234bc PP |
17094 | munmap_section_buffer (&data->frame); |
17095 | munmap_section_buffer (&data->eh_frame); | |
9291a0cd | 17096 | munmap_section_buffer (&data->gdb_index); |
8b70b953 TT |
17097 | |
17098 | for (ix = 0; | |
17099 | VEC_iterate (dwarf2_section_info_def, data->types, ix, section); | |
17100 | ++ix) | |
17101 | munmap_section_buffer (section); | |
17102 | ||
95554aad TT |
17103 | for (ix = 0; ix < dwarf2_per_objfile->n_comp_units; ++ix) |
17104 | VEC_free (dwarf2_per_cu_ptr, | |
17105 | dwarf2_per_objfile->all_comp_units[ix]->imported_symtabs); | |
17106 | ||
8b70b953 | 17107 | VEC_free (dwarf2_section_info_def, data->types); |
3019eac3 DE |
17108 | |
17109 | if (data->dwo_files) | |
17110 | free_dwo_files (data->dwo_files, objfile); | |
9291a0cd TT |
17111 | } |
17112 | ||
17113 | \f | |
ae2de4f8 | 17114 | /* The "save gdb-index" command. */ |
9291a0cd TT |
17115 | |
17116 | /* The contents of the hash table we create when building the string | |
17117 | table. */ | |
17118 | struct strtab_entry | |
17119 | { | |
17120 | offset_type offset; | |
17121 | const char *str; | |
17122 | }; | |
17123 | ||
559a7a62 JK |
17124 | /* Hash function for a strtab_entry. |
17125 | ||
17126 | Function is used only during write_hash_table so no index format backward | |
17127 | compatibility is needed. */ | |
b89be57b | 17128 | |
9291a0cd TT |
17129 | static hashval_t |
17130 | hash_strtab_entry (const void *e) | |
17131 | { | |
17132 | const struct strtab_entry *entry = e; | |
559a7a62 | 17133 | return mapped_index_string_hash (INT_MAX, entry->str); |
9291a0cd TT |
17134 | } |
17135 | ||
17136 | /* Equality function for a strtab_entry. */ | |
b89be57b | 17137 | |
9291a0cd TT |
17138 | static int |
17139 | eq_strtab_entry (const void *a, const void *b) | |
17140 | { | |
17141 | const struct strtab_entry *ea = a; | |
17142 | const struct strtab_entry *eb = b; | |
17143 | return !strcmp (ea->str, eb->str); | |
17144 | } | |
17145 | ||
17146 | /* Create a strtab_entry hash table. */ | |
b89be57b | 17147 | |
9291a0cd TT |
17148 | static htab_t |
17149 | create_strtab (void) | |
17150 | { | |
17151 | return htab_create_alloc (100, hash_strtab_entry, eq_strtab_entry, | |
17152 | xfree, xcalloc, xfree); | |
17153 | } | |
17154 | ||
17155 | /* Add a string to the constant pool. Return the string's offset in | |
17156 | host order. */ | |
b89be57b | 17157 | |
9291a0cd TT |
17158 | static offset_type |
17159 | add_string (htab_t table, struct obstack *cpool, const char *str) | |
17160 | { | |
17161 | void **slot; | |
17162 | struct strtab_entry entry; | |
17163 | struct strtab_entry *result; | |
17164 | ||
17165 | entry.str = str; | |
17166 | slot = htab_find_slot (table, &entry, INSERT); | |
17167 | if (*slot) | |
17168 | result = *slot; | |
17169 | else | |
17170 | { | |
17171 | result = XNEW (struct strtab_entry); | |
17172 | result->offset = obstack_object_size (cpool); | |
17173 | result->str = str; | |
17174 | obstack_grow_str0 (cpool, str); | |
17175 | *slot = result; | |
17176 | } | |
17177 | return result->offset; | |
17178 | } | |
17179 | ||
17180 | /* An entry in the symbol table. */ | |
17181 | struct symtab_index_entry | |
17182 | { | |
17183 | /* The name of the symbol. */ | |
17184 | const char *name; | |
17185 | /* The offset of the name in the constant pool. */ | |
17186 | offset_type index_offset; | |
17187 | /* A sorted vector of the indices of all the CUs that hold an object | |
17188 | of this name. */ | |
17189 | VEC (offset_type) *cu_indices; | |
17190 | }; | |
17191 | ||
17192 | /* The symbol table. This is a power-of-2-sized hash table. */ | |
17193 | struct mapped_symtab | |
17194 | { | |
17195 | offset_type n_elements; | |
17196 | offset_type size; | |
17197 | struct symtab_index_entry **data; | |
17198 | }; | |
17199 | ||
17200 | /* Hash function for a symtab_index_entry. */ | |
b89be57b | 17201 | |
9291a0cd TT |
17202 | static hashval_t |
17203 | hash_symtab_entry (const void *e) | |
17204 | { | |
17205 | const struct symtab_index_entry *entry = e; | |
17206 | return iterative_hash (VEC_address (offset_type, entry->cu_indices), | |
17207 | sizeof (offset_type) * VEC_length (offset_type, | |
17208 | entry->cu_indices), | |
17209 | 0); | |
17210 | } | |
17211 | ||
17212 | /* Equality function for a symtab_index_entry. */ | |
b89be57b | 17213 | |
9291a0cd TT |
17214 | static int |
17215 | eq_symtab_entry (const void *a, const void *b) | |
17216 | { | |
17217 | const struct symtab_index_entry *ea = a; | |
17218 | const struct symtab_index_entry *eb = b; | |
17219 | int len = VEC_length (offset_type, ea->cu_indices); | |
17220 | if (len != VEC_length (offset_type, eb->cu_indices)) | |
17221 | return 0; | |
17222 | return !memcmp (VEC_address (offset_type, ea->cu_indices), | |
17223 | VEC_address (offset_type, eb->cu_indices), | |
17224 | sizeof (offset_type) * len); | |
17225 | } | |
17226 | ||
17227 | /* Destroy a symtab_index_entry. */ | |
b89be57b | 17228 | |
9291a0cd TT |
17229 | static void |
17230 | delete_symtab_entry (void *p) | |
17231 | { | |
17232 | struct symtab_index_entry *entry = p; | |
17233 | VEC_free (offset_type, entry->cu_indices); | |
17234 | xfree (entry); | |
17235 | } | |
17236 | ||
17237 | /* Create a hash table holding symtab_index_entry objects. */ | |
b89be57b | 17238 | |
9291a0cd | 17239 | static htab_t |
3876f04e | 17240 | create_symbol_hash_table (void) |
9291a0cd TT |
17241 | { |
17242 | return htab_create_alloc (100, hash_symtab_entry, eq_symtab_entry, | |
17243 | delete_symtab_entry, xcalloc, xfree); | |
17244 | } | |
17245 | ||
17246 | /* Create a new mapped symtab object. */ | |
b89be57b | 17247 | |
9291a0cd TT |
17248 | static struct mapped_symtab * |
17249 | create_mapped_symtab (void) | |
17250 | { | |
17251 | struct mapped_symtab *symtab = XNEW (struct mapped_symtab); | |
17252 | symtab->n_elements = 0; | |
17253 | symtab->size = 1024; | |
17254 | symtab->data = XCNEWVEC (struct symtab_index_entry *, symtab->size); | |
17255 | return symtab; | |
17256 | } | |
17257 | ||
17258 | /* Destroy a mapped_symtab. */ | |
b89be57b | 17259 | |
9291a0cd TT |
17260 | static void |
17261 | cleanup_mapped_symtab (void *p) | |
17262 | { | |
17263 | struct mapped_symtab *symtab = p; | |
17264 | /* The contents of the array are freed when the other hash table is | |
17265 | destroyed. */ | |
17266 | xfree (symtab->data); | |
17267 | xfree (symtab); | |
17268 | } | |
17269 | ||
17270 | /* Find a slot in SYMTAB for the symbol NAME. Returns a pointer to | |
559a7a62 JK |
17271 | the slot. |
17272 | ||
17273 | Function is used only during write_hash_table so no index format backward | |
17274 | compatibility is needed. */ | |
b89be57b | 17275 | |
9291a0cd TT |
17276 | static struct symtab_index_entry ** |
17277 | find_slot (struct mapped_symtab *symtab, const char *name) | |
17278 | { | |
559a7a62 | 17279 | offset_type index, step, hash = mapped_index_string_hash (INT_MAX, name); |
9291a0cd TT |
17280 | |
17281 | index = hash & (symtab->size - 1); | |
17282 | step = ((hash * 17) & (symtab->size - 1)) | 1; | |
17283 | ||
17284 | for (;;) | |
17285 | { | |
17286 | if (!symtab->data[index] || !strcmp (name, symtab->data[index]->name)) | |
17287 | return &symtab->data[index]; | |
17288 | index = (index + step) & (symtab->size - 1); | |
17289 | } | |
17290 | } | |
17291 | ||
17292 | /* Expand SYMTAB's hash table. */ | |
b89be57b | 17293 | |
9291a0cd TT |
17294 | static void |
17295 | hash_expand (struct mapped_symtab *symtab) | |
17296 | { | |
17297 | offset_type old_size = symtab->size; | |
17298 | offset_type i; | |
17299 | struct symtab_index_entry **old_entries = symtab->data; | |
17300 | ||
17301 | symtab->size *= 2; | |
17302 | symtab->data = XCNEWVEC (struct symtab_index_entry *, symtab->size); | |
17303 | ||
17304 | for (i = 0; i < old_size; ++i) | |
17305 | { | |
17306 | if (old_entries[i]) | |
17307 | { | |
17308 | struct symtab_index_entry **slot = find_slot (symtab, | |
17309 | old_entries[i]->name); | |
17310 | *slot = old_entries[i]; | |
17311 | } | |
17312 | } | |
17313 | ||
17314 | xfree (old_entries); | |
17315 | } | |
17316 | ||
17317 | /* Add an entry to SYMTAB. NAME is the name of the symbol. CU_INDEX | |
17318 | is the index of the CU in which the symbol appears. */ | |
b89be57b | 17319 | |
9291a0cd TT |
17320 | static void |
17321 | add_index_entry (struct mapped_symtab *symtab, const char *name, | |
17322 | offset_type cu_index) | |
17323 | { | |
17324 | struct symtab_index_entry **slot; | |
17325 | ||
17326 | ++symtab->n_elements; | |
17327 | if (4 * symtab->n_elements / 3 >= symtab->size) | |
17328 | hash_expand (symtab); | |
17329 | ||
17330 | slot = find_slot (symtab, name); | |
17331 | if (!*slot) | |
17332 | { | |
17333 | *slot = XNEW (struct symtab_index_entry); | |
17334 | (*slot)->name = name; | |
17335 | (*slot)->cu_indices = NULL; | |
17336 | } | |
17337 | /* Don't push an index twice. Due to how we add entries we only | |
17338 | have to check the last one. */ | |
17339 | if (VEC_empty (offset_type, (*slot)->cu_indices) | |
cf31e6f9 | 17340 | || VEC_last (offset_type, (*slot)->cu_indices) != cu_index) |
9291a0cd TT |
17341 | VEC_safe_push (offset_type, (*slot)->cu_indices, cu_index); |
17342 | } | |
17343 | ||
17344 | /* Add a vector of indices to the constant pool. */ | |
b89be57b | 17345 | |
9291a0cd | 17346 | static offset_type |
3876f04e | 17347 | add_indices_to_cpool (htab_t symbol_hash_table, struct obstack *cpool, |
9291a0cd TT |
17348 | struct symtab_index_entry *entry) |
17349 | { | |
17350 | void **slot; | |
17351 | ||
3876f04e | 17352 | slot = htab_find_slot (symbol_hash_table, entry, INSERT); |
9291a0cd TT |
17353 | if (!*slot) |
17354 | { | |
17355 | offset_type len = VEC_length (offset_type, entry->cu_indices); | |
17356 | offset_type val = MAYBE_SWAP (len); | |
17357 | offset_type iter; | |
17358 | int i; | |
17359 | ||
17360 | *slot = entry; | |
17361 | entry->index_offset = obstack_object_size (cpool); | |
17362 | ||
17363 | obstack_grow (cpool, &val, sizeof (val)); | |
17364 | for (i = 0; | |
17365 | VEC_iterate (offset_type, entry->cu_indices, i, iter); | |
17366 | ++i) | |
17367 | { | |
17368 | val = MAYBE_SWAP (iter); | |
17369 | obstack_grow (cpool, &val, sizeof (val)); | |
17370 | } | |
17371 | } | |
17372 | else | |
17373 | { | |
17374 | struct symtab_index_entry *old_entry = *slot; | |
17375 | entry->index_offset = old_entry->index_offset; | |
17376 | entry = old_entry; | |
17377 | } | |
17378 | return entry->index_offset; | |
17379 | } | |
17380 | ||
17381 | /* Write the mapped hash table SYMTAB to the obstack OUTPUT, with | |
17382 | constant pool entries going into the obstack CPOOL. */ | |
b89be57b | 17383 | |
9291a0cd TT |
17384 | static void |
17385 | write_hash_table (struct mapped_symtab *symtab, | |
17386 | struct obstack *output, struct obstack *cpool) | |
17387 | { | |
17388 | offset_type i; | |
3876f04e | 17389 | htab_t symbol_hash_table; |
9291a0cd TT |
17390 | htab_t str_table; |
17391 | ||
3876f04e | 17392 | symbol_hash_table = create_symbol_hash_table (); |
9291a0cd | 17393 | str_table = create_strtab (); |
3876f04e | 17394 | |
9291a0cd TT |
17395 | /* We add all the index vectors to the constant pool first, to |
17396 | ensure alignment is ok. */ | |
17397 | for (i = 0; i < symtab->size; ++i) | |
17398 | { | |
17399 | if (symtab->data[i]) | |
3876f04e | 17400 | add_indices_to_cpool (symbol_hash_table, cpool, symtab->data[i]); |
9291a0cd TT |
17401 | } |
17402 | ||
17403 | /* Now write out the hash table. */ | |
17404 | for (i = 0; i < symtab->size; ++i) | |
17405 | { | |
17406 | offset_type str_off, vec_off; | |
17407 | ||
17408 | if (symtab->data[i]) | |
17409 | { | |
17410 | str_off = add_string (str_table, cpool, symtab->data[i]->name); | |
17411 | vec_off = symtab->data[i]->index_offset; | |
17412 | } | |
17413 | else | |
17414 | { | |
17415 | /* While 0 is a valid constant pool index, it is not valid | |
17416 | to have 0 for both offsets. */ | |
17417 | str_off = 0; | |
17418 | vec_off = 0; | |
17419 | } | |
17420 | ||
17421 | str_off = MAYBE_SWAP (str_off); | |
17422 | vec_off = MAYBE_SWAP (vec_off); | |
17423 | ||
17424 | obstack_grow (output, &str_off, sizeof (str_off)); | |
17425 | obstack_grow (output, &vec_off, sizeof (vec_off)); | |
17426 | } | |
17427 | ||
17428 | htab_delete (str_table); | |
3876f04e | 17429 | htab_delete (symbol_hash_table); |
9291a0cd TT |
17430 | } |
17431 | ||
0a5429f6 DE |
17432 | /* Struct to map psymtab to CU index in the index file. */ |
17433 | struct psymtab_cu_index_map | |
17434 | { | |
17435 | struct partial_symtab *psymtab; | |
17436 | unsigned int cu_index; | |
17437 | }; | |
17438 | ||
17439 | static hashval_t | |
17440 | hash_psymtab_cu_index (const void *item) | |
17441 | { | |
17442 | const struct psymtab_cu_index_map *map = item; | |
17443 | ||
17444 | return htab_hash_pointer (map->psymtab); | |
17445 | } | |
17446 | ||
17447 | static int | |
17448 | eq_psymtab_cu_index (const void *item_lhs, const void *item_rhs) | |
17449 | { | |
17450 | const struct psymtab_cu_index_map *lhs = item_lhs; | |
17451 | const struct psymtab_cu_index_map *rhs = item_rhs; | |
17452 | ||
17453 | return lhs->psymtab == rhs->psymtab; | |
17454 | } | |
17455 | ||
17456 | /* Helper struct for building the address table. */ | |
17457 | struct addrmap_index_data | |
17458 | { | |
17459 | struct objfile *objfile; | |
17460 | struct obstack *addr_obstack; | |
17461 | htab_t cu_index_htab; | |
17462 | ||
17463 | /* Non-zero if the previous_* fields are valid. | |
17464 | We can't write an entry until we see the next entry (since it is only then | |
17465 | that we know the end of the entry). */ | |
17466 | int previous_valid; | |
17467 | /* Index of the CU in the table of all CUs in the index file. */ | |
17468 | unsigned int previous_cu_index; | |
0963b4bd | 17469 | /* Start address of the CU. */ |
0a5429f6 DE |
17470 | CORE_ADDR previous_cu_start; |
17471 | }; | |
17472 | ||
17473 | /* Write an address entry to OBSTACK. */ | |
b89be57b | 17474 | |
9291a0cd | 17475 | static void |
0a5429f6 DE |
17476 | add_address_entry (struct objfile *objfile, struct obstack *obstack, |
17477 | CORE_ADDR start, CORE_ADDR end, unsigned int cu_index) | |
9291a0cd | 17478 | { |
0a5429f6 | 17479 | offset_type cu_index_to_write; |
9291a0cd TT |
17480 | char addr[8]; |
17481 | CORE_ADDR baseaddr; | |
17482 | ||
17483 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
17484 | ||
0a5429f6 DE |
17485 | store_unsigned_integer (addr, 8, BFD_ENDIAN_LITTLE, start - baseaddr); |
17486 | obstack_grow (obstack, addr, 8); | |
17487 | store_unsigned_integer (addr, 8, BFD_ENDIAN_LITTLE, end - baseaddr); | |
17488 | obstack_grow (obstack, addr, 8); | |
17489 | cu_index_to_write = MAYBE_SWAP (cu_index); | |
17490 | obstack_grow (obstack, &cu_index_to_write, sizeof (offset_type)); | |
17491 | } | |
17492 | ||
17493 | /* Worker function for traversing an addrmap to build the address table. */ | |
17494 | ||
17495 | static int | |
17496 | add_address_entry_worker (void *datap, CORE_ADDR start_addr, void *obj) | |
17497 | { | |
17498 | struct addrmap_index_data *data = datap; | |
17499 | struct partial_symtab *pst = obj; | |
17500 | offset_type cu_index; | |
17501 | void **slot; | |
17502 | ||
17503 | if (data->previous_valid) | |
17504 | add_address_entry (data->objfile, data->addr_obstack, | |
17505 | data->previous_cu_start, start_addr, | |
17506 | data->previous_cu_index); | |
17507 | ||
17508 | data->previous_cu_start = start_addr; | |
17509 | if (pst != NULL) | |
17510 | { | |
17511 | struct psymtab_cu_index_map find_map, *map; | |
17512 | find_map.psymtab = pst; | |
17513 | map = htab_find (data->cu_index_htab, &find_map); | |
17514 | gdb_assert (map != NULL); | |
17515 | data->previous_cu_index = map->cu_index; | |
17516 | data->previous_valid = 1; | |
17517 | } | |
17518 | else | |
17519 | data->previous_valid = 0; | |
17520 | ||
17521 | return 0; | |
17522 | } | |
17523 | ||
17524 | /* Write OBJFILE's address map to OBSTACK. | |
17525 | CU_INDEX_HTAB is used to map addrmap entries to their CU indices | |
17526 | in the index file. */ | |
17527 | ||
17528 | static void | |
17529 | write_address_map (struct objfile *objfile, struct obstack *obstack, | |
17530 | htab_t cu_index_htab) | |
17531 | { | |
17532 | struct addrmap_index_data addrmap_index_data; | |
17533 | ||
17534 | /* When writing the address table, we have to cope with the fact that | |
17535 | the addrmap iterator only provides the start of a region; we have to | |
17536 | wait until the next invocation to get the start of the next region. */ | |
17537 | ||
17538 | addrmap_index_data.objfile = objfile; | |
17539 | addrmap_index_data.addr_obstack = obstack; | |
17540 | addrmap_index_data.cu_index_htab = cu_index_htab; | |
17541 | addrmap_index_data.previous_valid = 0; | |
17542 | ||
17543 | addrmap_foreach (objfile->psymtabs_addrmap, add_address_entry_worker, | |
17544 | &addrmap_index_data); | |
17545 | ||
17546 | /* It's highly unlikely the last entry (end address = 0xff...ff) | |
17547 | is valid, but we should still handle it. | |
17548 | The end address is recorded as the start of the next region, but that | |
17549 | doesn't work here. To cope we pass 0xff...ff, this is a rare situation | |
17550 | anyway. */ | |
17551 | if (addrmap_index_data.previous_valid) | |
17552 | add_address_entry (objfile, obstack, | |
17553 | addrmap_index_data.previous_cu_start, (CORE_ADDR) -1, | |
17554 | addrmap_index_data.previous_cu_index); | |
9291a0cd TT |
17555 | } |
17556 | ||
17557 | /* Add a list of partial symbols to SYMTAB. */ | |
b89be57b | 17558 | |
9291a0cd TT |
17559 | static void |
17560 | write_psymbols (struct mapped_symtab *symtab, | |
987d643c | 17561 | htab_t psyms_seen, |
9291a0cd TT |
17562 | struct partial_symbol **psymp, |
17563 | int count, | |
987d643c TT |
17564 | offset_type cu_index, |
17565 | int is_static) | |
9291a0cd TT |
17566 | { |
17567 | for (; count-- > 0; ++psymp) | |
17568 | { | |
987d643c TT |
17569 | void **slot, *lookup; |
17570 | ||
9291a0cd TT |
17571 | if (SYMBOL_LANGUAGE (*psymp) == language_ada) |
17572 | error (_("Ada is not currently supported by the index")); | |
987d643c TT |
17573 | |
17574 | /* We only want to add a given psymbol once. However, we also | |
17575 | want to account for whether it is global or static. So, we | |
17576 | may add it twice, using slightly different values. */ | |
17577 | if (is_static) | |
17578 | { | |
17579 | uintptr_t val = 1 | (uintptr_t) *psymp; | |
17580 | ||
17581 | lookup = (void *) val; | |
17582 | } | |
17583 | else | |
17584 | lookup = *psymp; | |
17585 | ||
17586 | /* Only add a given psymbol once. */ | |
17587 | slot = htab_find_slot (psyms_seen, lookup, INSERT); | |
17588 | if (!*slot) | |
17589 | { | |
17590 | *slot = lookup; | |
bb2f58dc | 17591 | add_index_entry (symtab, SYMBOL_SEARCH_NAME (*psymp), cu_index); |
987d643c | 17592 | } |
9291a0cd TT |
17593 | } |
17594 | } | |
17595 | ||
17596 | /* Write the contents of an ("unfinished") obstack to FILE. Throw an | |
17597 | exception if there is an error. */ | |
b89be57b | 17598 | |
9291a0cd TT |
17599 | static void |
17600 | write_obstack (FILE *file, struct obstack *obstack) | |
17601 | { | |
17602 | if (fwrite (obstack_base (obstack), 1, obstack_object_size (obstack), | |
17603 | file) | |
17604 | != obstack_object_size (obstack)) | |
17605 | error (_("couldn't data write to file")); | |
17606 | } | |
17607 | ||
17608 | /* Unlink a file if the argument is not NULL. */ | |
b89be57b | 17609 | |
9291a0cd TT |
17610 | static void |
17611 | unlink_if_set (void *p) | |
17612 | { | |
17613 | char **filename = p; | |
17614 | if (*filename) | |
17615 | unlink (*filename); | |
17616 | } | |
17617 | ||
1fd400ff TT |
17618 | /* A helper struct used when iterating over debug_types. */ |
17619 | struct signatured_type_index_data | |
17620 | { | |
17621 | struct objfile *objfile; | |
17622 | struct mapped_symtab *symtab; | |
17623 | struct obstack *types_list; | |
987d643c | 17624 | htab_t psyms_seen; |
1fd400ff TT |
17625 | int cu_index; |
17626 | }; | |
17627 | ||
17628 | /* A helper function that writes a single signatured_type to an | |
17629 | obstack. */ | |
b89be57b | 17630 | |
1fd400ff TT |
17631 | static int |
17632 | write_one_signatured_type (void **slot, void *d) | |
17633 | { | |
17634 | struct signatured_type_index_data *info = d; | |
17635 | struct signatured_type *entry = (struct signatured_type *) *slot; | |
e254ef6a DE |
17636 | struct dwarf2_per_cu_data *per_cu = &entry->per_cu; |
17637 | struct partial_symtab *psymtab = per_cu->v.psymtab; | |
1fd400ff TT |
17638 | gdb_byte val[8]; |
17639 | ||
17640 | write_psymbols (info->symtab, | |
987d643c | 17641 | info->psyms_seen, |
3e43a32a MS |
17642 | info->objfile->global_psymbols.list |
17643 | + psymtab->globals_offset, | |
987d643c TT |
17644 | psymtab->n_global_syms, info->cu_index, |
17645 | 0); | |
1fd400ff | 17646 | write_psymbols (info->symtab, |
987d643c | 17647 | info->psyms_seen, |
3e43a32a MS |
17648 | info->objfile->static_psymbols.list |
17649 | + psymtab->statics_offset, | |
987d643c TT |
17650 | psymtab->n_static_syms, info->cu_index, |
17651 | 1); | |
1fd400ff | 17652 | |
b64f50a1 JK |
17653 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, |
17654 | entry->per_cu.offset.sect_off); | |
1fd400ff | 17655 | obstack_grow (info->types_list, val, 8); |
3019eac3 DE |
17656 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, |
17657 | entry->type_offset_in_tu.cu_off); | |
1fd400ff TT |
17658 | obstack_grow (info->types_list, val, 8); |
17659 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, entry->signature); | |
17660 | obstack_grow (info->types_list, val, 8); | |
17661 | ||
17662 | ++info->cu_index; | |
17663 | ||
17664 | return 1; | |
17665 | } | |
17666 | ||
95554aad TT |
17667 | /* Recurse into all "included" dependencies and write their symbols as |
17668 | if they appeared in this psymtab. */ | |
17669 | ||
17670 | static void | |
17671 | recursively_write_psymbols (struct objfile *objfile, | |
17672 | struct partial_symtab *psymtab, | |
17673 | struct mapped_symtab *symtab, | |
17674 | htab_t psyms_seen, | |
17675 | offset_type cu_index) | |
17676 | { | |
17677 | int i; | |
17678 | ||
17679 | for (i = 0; i < psymtab->number_of_dependencies; ++i) | |
17680 | if (psymtab->dependencies[i]->user != NULL) | |
17681 | recursively_write_psymbols (objfile, psymtab->dependencies[i], | |
17682 | symtab, psyms_seen, cu_index); | |
17683 | ||
17684 | write_psymbols (symtab, | |
17685 | psyms_seen, | |
17686 | objfile->global_psymbols.list + psymtab->globals_offset, | |
17687 | psymtab->n_global_syms, cu_index, | |
17688 | 0); | |
17689 | write_psymbols (symtab, | |
17690 | psyms_seen, | |
17691 | objfile->static_psymbols.list + psymtab->statics_offset, | |
17692 | psymtab->n_static_syms, cu_index, | |
17693 | 1); | |
17694 | } | |
17695 | ||
9291a0cd | 17696 | /* Create an index file for OBJFILE in the directory DIR. */ |
b89be57b | 17697 | |
9291a0cd TT |
17698 | static void |
17699 | write_psymtabs_to_index (struct objfile *objfile, const char *dir) | |
17700 | { | |
17701 | struct cleanup *cleanup; | |
17702 | char *filename, *cleanup_filename; | |
1fd400ff TT |
17703 | struct obstack contents, addr_obstack, constant_pool, symtab_obstack; |
17704 | struct obstack cu_list, types_cu_list; | |
9291a0cd TT |
17705 | int i; |
17706 | FILE *out_file; | |
17707 | struct mapped_symtab *symtab; | |
17708 | offset_type val, size_of_contents, total_len; | |
17709 | struct stat st; | |
17710 | char buf[8]; | |
987d643c | 17711 | htab_t psyms_seen; |
0a5429f6 DE |
17712 | htab_t cu_index_htab; |
17713 | struct psymtab_cu_index_map *psymtab_cu_index_map; | |
9291a0cd | 17714 | |
b4f2f049 | 17715 | if (!objfile->psymtabs || !objfile->psymtabs_addrmap) |
9291a0cd | 17716 | return; |
b4f2f049 | 17717 | |
9291a0cd TT |
17718 | if (dwarf2_per_objfile->using_index) |
17719 | error (_("Cannot use an index to create the index")); | |
17720 | ||
8b70b953 TT |
17721 | if (VEC_length (dwarf2_section_info_def, dwarf2_per_objfile->types) > 1) |
17722 | error (_("Cannot make an index when the file has multiple .debug_types sections")); | |
17723 | ||
9291a0cd | 17724 | if (stat (objfile->name, &st) < 0) |
7e17e088 | 17725 | perror_with_name (objfile->name); |
9291a0cd TT |
17726 | |
17727 | filename = concat (dir, SLASH_STRING, lbasename (objfile->name), | |
17728 | INDEX_SUFFIX, (char *) NULL); | |
17729 | cleanup = make_cleanup (xfree, filename); | |
17730 | ||
17731 | out_file = fopen (filename, "wb"); | |
17732 | if (!out_file) | |
17733 | error (_("Can't open `%s' for writing"), filename); | |
17734 | ||
17735 | cleanup_filename = filename; | |
17736 | make_cleanup (unlink_if_set, &cleanup_filename); | |
17737 | ||
17738 | symtab = create_mapped_symtab (); | |
17739 | make_cleanup (cleanup_mapped_symtab, symtab); | |
17740 | ||
17741 | obstack_init (&addr_obstack); | |
17742 | make_cleanup_obstack_free (&addr_obstack); | |
17743 | ||
17744 | obstack_init (&cu_list); | |
17745 | make_cleanup_obstack_free (&cu_list); | |
17746 | ||
1fd400ff TT |
17747 | obstack_init (&types_cu_list); |
17748 | make_cleanup_obstack_free (&types_cu_list); | |
17749 | ||
987d643c TT |
17750 | psyms_seen = htab_create_alloc (100, htab_hash_pointer, htab_eq_pointer, |
17751 | NULL, xcalloc, xfree); | |
96408a79 | 17752 | make_cleanup_htab_delete (psyms_seen); |
987d643c | 17753 | |
0a5429f6 DE |
17754 | /* While we're scanning CU's create a table that maps a psymtab pointer |
17755 | (which is what addrmap records) to its index (which is what is recorded | |
17756 | in the index file). This will later be needed to write the address | |
17757 | table. */ | |
17758 | cu_index_htab = htab_create_alloc (100, | |
17759 | hash_psymtab_cu_index, | |
17760 | eq_psymtab_cu_index, | |
17761 | NULL, xcalloc, xfree); | |
96408a79 | 17762 | make_cleanup_htab_delete (cu_index_htab); |
0a5429f6 DE |
17763 | psymtab_cu_index_map = (struct psymtab_cu_index_map *) |
17764 | xmalloc (sizeof (struct psymtab_cu_index_map) | |
17765 | * dwarf2_per_objfile->n_comp_units); | |
17766 | make_cleanup (xfree, psymtab_cu_index_map); | |
17767 | ||
17768 | /* The CU list is already sorted, so we don't need to do additional | |
1fd400ff TT |
17769 | work here. Also, the debug_types entries do not appear in |
17770 | all_comp_units, but only in their own hash table. */ | |
9291a0cd TT |
17771 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
17772 | { | |
3e43a32a MS |
17773 | struct dwarf2_per_cu_data *per_cu |
17774 | = dwarf2_per_objfile->all_comp_units[i]; | |
e254ef6a | 17775 | struct partial_symtab *psymtab = per_cu->v.psymtab; |
9291a0cd | 17776 | gdb_byte val[8]; |
0a5429f6 DE |
17777 | struct psymtab_cu_index_map *map; |
17778 | void **slot; | |
9291a0cd | 17779 | |
95554aad TT |
17780 | if (psymtab->user == NULL) |
17781 | recursively_write_psymbols (objfile, psymtab, symtab, psyms_seen, i); | |
9291a0cd | 17782 | |
0a5429f6 DE |
17783 | map = &psymtab_cu_index_map[i]; |
17784 | map->psymtab = psymtab; | |
17785 | map->cu_index = i; | |
17786 | slot = htab_find_slot (cu_index_htab, map, INSERT); | |
17787 | gdb_assert (slot != NULL); | |
17788 | gdb_assert (*slot == NULL); | |
17789 | *slot = map; | |
9291a0cd | 17790 | |
b64f50a1 JK |
17791 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, |
17792 | per_cu->offset.sect_off); | |
9291a0cd | 17793 | obstack_grow (&cu_list, val, 8); |
e254ef6a | 17794 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, per_cu->length); |
9291a0cd TT |
17795 | obstack_grow (&cu_list, val, 8); |
17796 | } | |
17797 | ||
0a5429f6 DE |
17798 | /* Dump the address map. */ |
17799 | write_address_map (objfile, &addr_obstack, cu_index_htab); | |
17800 | ||
1fd400ff TT |
17801 | /* Write out the .debug_type entries, if any. */ |
17802 | if (dwarf2_per_objfile->signatured_types) | |
17803 | { | |
17804 | struct signatured_type_index_data sig_data; | |
17805 | ||
17806 | sig_data.objfile = objfile; | |
17807 | sig_data.symtab = symtab; | |
17808 | sig_data.types_list = &types_cu_list; | |
987d643c | 17809 | sig_data.psyms_seen = psyms_seen; |
1fd400ff TT |
17810 | sig_data.cu_index = dwarf2_per_objfile->n_comp_units; |
17811 | htab_traverse_noresize (dwarf2_per_objfile->signatured_types, | |
17812 | write_one_signatured_type, &sig_data); | |
17813 | } | |
17814 | ||
9291a0cd TT |
17815 | obstack_init (&constant_pool); |
17816 | make_cleanup_obstack_free (&constant_pool); | |
17817 | obstack_init (&symtab_obstack); | |
17818 | make_cleanup_obstack_free (&symtab_obstack); | |
17819 | write_hash_table (symtab, &symtab_obstack, &constant_pool); | |
17820 | ||
17821 | obstack_init (&contents); | |
17822 | make_cleanup_obstack_free (&contents); | |
1fd400ff | 17823 | size_of_contents = 6 * sizeof (offset_type); |
9291a0cd TT |
17824 | total_len = size_of_contents; |
17825 | ||
17826 | /* The version number. */ | |
481860b3 | 17827 | val = MAYBE_SWAP (6); |
9291a0cd TT |
17828 | obstack_grow (&contents, &val, sizeof (val)); |
17829 | ||
17830 | /* The offset of the CU list from the start of the file. */ | |
17831 | val = MAYBE_SWAP (total_len); | |
17832 | obstack_grow (&contents, &val, sizeof (val)); | |
17833 | total_len += obstack_object_size (&cu_list); | |
17834 | ||
1fd400ff TT |
17835 | /* The offset of the types CU list from the start of the file. */ |
17836 | val = MAYBE_SWAP (total_len); | |
17837 | obstack_grow (&contents, &val, sizeof (val)); | |
17838 | total_len += obstack_object_size (&types_cu_list); | |
17839 | ||
9291a0cd TT |
17840 | /* The offset of the address table from the start of the file. */ |
17841 | val = MAYBE_SWAP (total_len); | |
17842 | obstack_grow (&contents, &val, sizeof (val)); | |
17843 | total_len += obstack_object_size (&addr_obstack); | |
17844 | ||
17845 | /* The offset of the symbol table from the start of the file. */ | |
17846 | val = MAYBE_SWAP (total_len); | |
17847 | obstack_grow (&contents, &val, sizeof (val)); | |
17848 | total_len += obstack_object_size (&symtab_obstack); | |
17849 | ||
17850 | /* The offset of the constant pool from the start of the file. */ | |
17851 | val = MAYBE_SWAP (total_len); | |
17852 | obstack_grow (&contents, &val, sizeof (val)); | |
17853 | total_len += obstack_object_size (&constant_pool); | |
17854 | ||
17855 | gdb_assert (obstack_object_size (&contents) == size_of_contents); | |
17856 | ||
17857 | write_obstack (out_file, &contents); | |
17858 | write_obstack (out_file, &cu_list); | |
1fd400ff | 17859 | write_obstack (out_file, &types_cu_list); |
9291a0cd TT |
17860 | write_obstack (out_file, &addr_obstack); |
17861 | write_obstack (out_file, &symtab_obstack); | |
17862 | write_obstack (out_file, &constant_pool); | |
17863 | ||
17864 | fclose (out_file); | |
17865 | ||
17866 | /* We want to keep the file, so we set cleanup_filename to NULL | |
17867 | here. See unlink_if_set. */ | |
17868 | cleanup_filename = NULL; | |
17869 | ||
17870 | do_cleanups (cleanup); | |
17871 | } | |
17872 | ||
90476074 TT |
17873 | /* Implementation of the `save gdb-index' command. |
17874 | ||
17875 | Note that the file format used by this command is documented in the | |
17876 | GDB manual. Any changes here must be documented there. */ | |
11570e71 | 17877 | |
9291a0cd TT |
17878 | static void |
17879 | save_gdb_index_command (char *arg, int from_tty) | |
17880 | { | |
17881 | struct objfile *objfile; | |
17882 | ||
17883 | if (!arg || !*arg) | |
96d19272 | 17884 | error (_("usage: save gdb-index DIRECTORY")); |
9291a0cd TT |
17885 | |
17886 | ALL_OBJFILES (objfile) | |
17887 | { | |
17888 | struct stat st; | |
17889 | ||
17890 | /* If the objfile does not correspond to an actual file, skip it. */ | |
17891 | if (stat (objfile->name, &st) < 0) | |
17892 | continue; | |
17893 | ||
17894 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); | |
17895 | if (dwarf2_per_objfile) | |
17896 | { | |
17897 | volatile struct gdb_exception except; | |
17898 | ||
17899 | TRY_CATCH (except, RETURN_MASK_ERROR) | |
17900 | { | |
17901 | write_psymtabs_to_index (objfile, arg); | |
17902 | } | |
17903 | if (except.reason < 0) | |
17904 | exception_fprintf (gdb_stderr, except, | |
17905 | _("Error while writing index for `%s': "), | |
17906 | objfile->name); | |
17907 | } | |
17908 | } | |
dce234bc PP |
17909 | } |
17910 | ||
9291a0cd TT |
17911 | \f |
17912 | ||
9eae7c52 TT |
17913 | int dwarf2_always_disassemble; |
17914 | ||
17915 | static void | |
17916 | show_dwarf2_always_disassemble (struct ui_file *file, int from_tty, | |
17917 | struct cmd_list_element *c, const char *value) | |
17918 | { | |
3e43a32a MS |
17919 | fprintf_filtered (file, |
17920 | _("Whether to always disassemble " | |
17921 | "DWARF expressions is %s.\n"), | |
9eae7c52 TT |
17922 | value); |
17923 | } | |
17924 | ||
900e11f9 JK |
17925 | static void |
17926 | show_check_physname (struct ui_file *file, int from_tty, | |
17927 | struct cmd_list_element *c, const char *value) | |
17928 | { | |
17929 | fprintf_filtered (file, | |
17930 | _("Whether to check \"physname\" is %s.\n"), | |
17931 | value); | |
17932 | } | |
17933 | ||
6502dd73 DJ |
17934 | void _initialize_dwarf2_read (void); |
17935 | ||
17936 | void | |
17937 | _initialize_dwarf2_read (void) | |
17938 | { | |
96d19272 JK |
17939 | struct cmd_list_element *c; |
17940 | ||
dce234bc | 17941 | dwarf2_objfile_data_key |
c1bd65d0 | 17942 | = register_objfile_data_with_cleanup (NULL, dwarf2_per_objfile_free); |
ae038cb0 | 17943 | |
1bedd215 AC |
17944 | add_prefix_cmd ("dwarf2", class_maintenance, set_dwarf2_cmd, _("\ |
17945 | Set DWARF 2 specific variables.\n\ | |
17946 | Configure DWARF 2 variables such as the cache size"), | |
ae038cb0 DJ |
17947 | &set_dwarf2_cmdlist, "maintenance set dwarf2 ", |
17948 | 0/*allow-unknown*/, &maintenance_set_cmdlist); | |
17949 | ||
1bedd215 AC |
17950 | add_prefix_cmd ("dwarf2", class_maintenance, show_dwarf2_cmd, _("\ |
17951 | Show DWARF 2 specific variables\n\ | |
17952 | Show DWARF 2 variables such as the cache size"), | |
ae038cb0 DJ |
17953 | &show_dwarf2_cmdlist, "maintenance show dwarf2 ", |
17954 | 0/*allow-unknown*/, &maintenance_show_cmdlist); | |
17955 | ||
17956 | add_setshow_zinteger_cmd ("max-cache-age", class_obscure, | |
7915a72c AC |
17957 | &dwarf2_max_cache_age, _("\ |
17958 | Set the upper bound on the age of cached dwarf2 compilation units."), _("\ | |
17959 | Show the upper bound on the age of cached dwarf2 compilation units."), _("\ | |
17960 | A higher limit means that cached compilation units will be stored\n\ | |
17961 | in memory longer, and more total memory will be used. Zero disables\n\ | |
17962 | caching, which can slow down startup."), | |
2c5b56ce | 17963 | NULL, |
920d2a44 | 17964 | show_dwarf2_max_cache_age, |
2c5b56ce | 17965 | &set_dwarf2_cmdlist, |
ae038cb0 | 17966 | &show_dwarf2_cmdlist); |
d97bc12b | 17967 | |
9eae7c52 TT |
17968 | add_setshow_boolean_cmd ("always-disassemble", class_obscure, |
17969 | &dwarf2_always_disassemble, _("\ | |
17970 | Set whether `info address' always disassembles DWARF expressions."), _("\ | |
17971 | Show whether `info address' always disassembles DWARF expressions."), _("\ | |
17972 | When enabled, DWARF expressions are always printed in an assembly-like\n\ | |
17973 | syntax. When disabled, expressions will be printed in a more\n\ | |
17974 | conversational style, when possible."), | |
17975 | NULL, | |
17976 | show_dwarf2_always_disassemble, | |
17977 | &set_dwarf2_cmdlist, | |
17978 | &show_dwarf2_cmdlist); | |
17979 | ||
d97bc12b DE |
17980 | add_setshow_zinteger_cmd ("dwarf2-die", no_class, &dwarf2_die_debug, _("\ |
17981 | Set debugging of the dwarf2 DIE reader."), _("\ | |
17982 | Show debugging of the dwarf2 DIE reader."), _("\ | |
17983 | When enabled (non-zero), DIEs are dumped after they are read in.\n\ | |
17984 | The value is the maximum depth to print."), | |
17985 | NULL, | |
17986 | NULL, | |
17987 | &setdebuglist, &showdebuglist); | |
9291a0cd | 17988 | |
900e11f9 JK |
17989 | add_setshow_boolean_cmd ("check-physname", no_class, &check_physname, _("\ |
17990 | Set cross-checking of \"physname\" code against demangler."), _("\ | |
17991 | Show cross-checking of \"physname\" code against demangler."), _("\ | |
17992 | When enabled, GDB's internal \"physname\" code is checked against\n\ | |
17993 | the demangler."), | |
17994 | NULL, show_check_physname, | |
17995 | &setdebuglist, &showdebuglist); | |
17996 | ||
96d19272 | 17997 | c = add_cmd ("gdb-index", class_files, save_gdb_index_command, |
11570e71 | 17998 | _("\ |
fc1a9d6e | 17999 | Save a gdb-index file.\n\ |
11570e71 | 18000 | Usage: save gdb-index DIRECTORY"), |
96d19272 JK |
18001 | &save_cmdlist); |
18002 | set_cmd_completer (c, filename_completer); | |
6502dd73 | 18003 | } |