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 | ||
034e5797 DE |
415 | /* Non-NULL if this CU came from a DWO file. |
416 | There is an invariant here that is important to remember: | |
417 | Except for attributes copied from the top level DIE in the "main" | |
418 | (or "stub") file in preparation for reading the DWO file | |
419 | (e.g., DW_AT_GNU_addr_base), we KISS: there is only *one* CU. | |
420 | Either there isn't a DWO file (in which case this is NULL and the point | |
421 | is moot), or there is and either we're not going to read it (in which | |
422 | case this is NULL) or there is and we are reading it (in which case this | |
423 | is non-NULL). */ | |
3019eac3 DE |
424 | struct dwo_unit *dwo_unit; |
425 | ||
426 | /* The DW_AT_addr_base attribute if present, zero otherwise | |
427 | (zero is a valid value though). | |
428 | Note this value comes from the stub CU/TU's DIE. */ | |
429 | ULONGEST addr_base; | |
430 | ||
ae038cb0 DJ |
431 | /* Mark used when releasing cached dies. */ |
432 | unsigned int mark : 1; | |
433 | ||
8be455d7 JK |
434 | /* This CU references .debug_loc. See the symtab->locations_valid field. |
435 | This test is imperfect as there may exist optimized debug code not using | |
436 | any location list and still facing inlining issues if handled as | |
437 | unoptimized code. For a future better test see GCC PR other/32998. */ | |
8be455d7 | 438 | unsigned int has_loclist : 1; |
ba919b58 | 439 | |
685b1105 JK |
440 | /* These cache the results for producer_is_gxx_lt_4_6 and producer_is_icc. |
441 | CHECKED_PRODUCER is set if both PRODUCER_IS_GXX_LT_4_6 and PRODUCER_IS_ICC | |
442 | are valid. This information is cached because profiling CU expansion | |
443 | showed excessive time spent in producer_is_gxx_lt_4_6. */ | |
ba919b58 TT |
444 | unsigned int checked_producer : 1; |
445 | unsigned int producer_is_gxx_lt_4_6 : 1; | |
685b1105 | 446 | unsigned int producer_is_icc : 1; |
3019eac3 DE |
447 | |
448 | /* Non-zero if DW_AT_addr_base was found. | |
449 | Used when processing DWO files. */ | |
450 | unsigned int have_addr_base : 1; | |
e7c27a73 DJ |
451 | }; |
452 | ||
10b3939b DJ |
453 | /* Persistent data held for a compilation unit, even when not |
454 | processing it. We put a pointer to this structure in the | |
28dee7f5 | 455 | read_symtab_private field of the psymtab. */ |
10b3939b | 456 | |
ae038cb0 DJ |
457 | struct dwarf2_per_cu_data |
458 | { | |
348e048f | 459 | /* The start offset and length of this compilation unit. 2**29-1 |
ae038cb0 | 460 | bytes should suffice to store the length of any compilation unit |
45452591 DE |
461 | - if it doesn't, GDB will fall over anyway. |
462 | NOTE: Unlike comp_unit_head.length, this length includes | |
3019eac3 DE |
463 | initial_length_size. |
464 | If the DIE refers to a DWO file, this is always of the original die, | |
465 | not the DWO file. */ | |
b64f50a1 | 466 | sect_offset offset; |
348e048f | 467 | unsigned int length : 29; |
ae038cb0 DJ |
468 | |
469 | /* Flag indicating this compilation unit will be read in before | |
470 | any of the current compilation units are processed. */ | |
c764a876 | 471 | unsigned int queued : 1; |
ae038cb0 | 472 | |
0d99eb77 DE |
473 | /* This flag will be set when reading partial DIEs if we need to load |
474 | absolutely all DIEs for this compilation unit, instead of just the ones | |
475 | we think are interesting. It gets set if we look for a DIE in the | |
5afb4e99 DJ |
476 | hash table and don't find it. */ |
477 | unsigned int load_all_dies : 1; | |
478 | ||
3019eac3 DE |
479 | /* Non-zero if this CU is from .debug_types. */ |
480 | unsigned int is_debug_types : 1; | |
481 | ||
482 | /* The section this CU/TU lives in. | |
483 | If the DIE refers to a DWO file, this is always the original die, | |
484 | not the DWO file. */ | |
485 | struct dwarf2_section_info *info_or_types_section; | |
348e048f | 486 | |
17ea53c3 JK |
487 | /* Set to non-NULL iff this CU is currently loaded. When it gets freed out |
488 | of the CU cache it gets reset to NULL again. */ | |
ae038cb0 | 489 | struct dwarf2_cu *cu; |
1c379e20 | 490 | |
9cdd5dbd DE |
491 | /* The corresponding objfile. |
492 | Normally we can get the objfile from dwarf2_per_objfile. | |
493 | However we can enter this file with just a "per_cu" handle. */ | |
9291a0cd TT |
494 | struct objfile *objfile; |
495 | ||
496 | /* When using partial symbol tables, the 'psymtab' field is active. | |
497 | Otherwise the 'quick' field is active. */ | |
498 | union | |
499 | { | |
500 | /* The partial symbol table associated with this compilation unit, | |
95554aad | 501 | or NULL for unread partial units. */ |
9291a0cd TT |
502 | struct partial_symtab *psymtab; |
503 | ||
504 | /* Data needed by the "quick" functions. */ | |
505 | struct dwarf2_per_cu_quick_data *quick; | |
506 | } v; | |
95554aad TT |
507 | |
508 | /* The CUs we import using DW_TAG_imported_unit. This is filled in | |
509 | while reading psymtabs, used to compute the psymtab dependencies, | |
510 | and then cleared. Then it is filled in again while reading full | |
511 | symbols, and only deleted when the objfile is destroyed. */ | |
512 | VEC (dwarf2_per_cu_ptr) *imported_symtabs; | |
ae038cb0 DJ |
513 | }; |
514 | ||
348e048f DE |
515 | /* Entry in the signatured_types hash table. */ |
516 | ||
517 | struct signatured_type | |
518 | { | |
3019eac3 | 519 | /* The type's signature. */ |
348e048f DE |
520 | ULONGEST signature; |
521 | ||
3019eac3 DE |
522 | /* Offset in the TU of the type's DIE, as read from the TU header. |
523 | If the definition lives in a DWO file, this value is unusable. */ | |
524 | cu_offset type_offset_in_tu; | |
525 | ||
526 | /* Offset in the section of the type's DIE. | |
527 | If the definition lives in a DWO file, this is the offset in the | |
528 | .debug_types.dwo section. | |
529 | The value is zero until the actual value is known. | |
530 | Zero is otherwise not a valid section offset. */ | |
531 | sect_offset type_offset_in_section; | |
348e048f DE |
532 | |
533 | /* The CU(/TU) of this type. */ | |
534 | struct dwarf2_per_cu_data per_cu; | |
535 | }; | |
536 | ||
3019eac3 DE |
537 | /* These sections are what may appear in a "dwo" file. */ |
538 | ||
539 | struct dwo_sections | |
540 | { | |
541 | struct dwarf2_section_info abbrev; | |
542 | struct dwarf2_section_info info; | |
543 | struct dwarf2_section_info line; | |
544 | struct dwarf2_section_info loc; | |
545 | struct dwarf2_section_info str; | |
546 | struct dwarf2_section_info str_offsets; | |
547 | VEC (dwarf2_section_info_def) *types; | |
548 | }; | |
549 | ||
550 | /* Common bits of DWO CUs/TUs. */ | |
551 | ||
552 | struct dwo_unit | |
553 | { | |
554 | /* Backlink to the containing struct dwo_file. */ | |
555 | struct dwo_file *dwo_file; | |
556 | ||
557 | /* The "id" that distinguishes this CU/TU. | |
558 | .debug_info calls this "dwo_id", .debug_types calls this "signature". | |
559 | Since signatures came first, we stick with it for consistency. */ | |
560 | ULONGEST signature; | |
561 | ||
562 | /* The section this CU/TU lives in, in the DWO file. */ | |
563 | struct dwarf2_section_info *info_or_types_section; | |
564 | ||
565 | /* Same as dwarf2_per_cu_data:{offset,length} but for the DWO section. */ | |
566 | sect_offset offset; | |
567 | unsigned int length; | |
568 | ||
569 | /* For types, offset in the type's DIE of the type defined by this TU. */ | |
570 | cu_offset type_offset_in_tu; | |
571 | }; | |
572 | ||
573 | /* Data for one DWO file. */ | |
574 | ||
575 | struct dwo_file | |
576 | { | |
577 | /* The DW_AT_GNU_dwo_name attribute. | |
578 | We don't manage space for this, it's an attribute. */ | |
579 | const char *dwo_name; | |
580 | ||
581 | /* The bfd, when the file is open. Otherwise this is NULL. */ | |
582 | bfd *dwo_bfd; | |
583 | ||
584 | /* Section info for this file. */ | |
585 | struct dwo_sections sections; | |
586 | ||
587 | /* Table of CUs in the file. | |
588 | Each element is a struct dwo_unit. */ | |
589 | htab_t cus; | |
590 | ||
591 | /* Table of TUs in the file. | |
592 | Each element is a struct dwo_unit. */ | |
593 | htab_t tus; | |
594 | }; | |
595 | ||
0963b4bd MS |
596 | /* Struct used to pass misc. parameters to read_die_and_children, et |
597 | al. which are used for both .debug_info and .debug_types dies. | |
598 | All parameters here are unchanging for the life of the call. This | |
dee91e82 | 599 | struct exists to abstract away the constant parameters of die reading. */ |
93311388 DE |
600 | |
601 | struct die_reader_specs | |
602 | { | |
dee91e82 | 603 | /* die_section->asection->owner. */ |
93311388 DE |
604 | bfd* abfd; |
605 | ||
606 | /* The CU of the DIE we are parsing. */ | |
607 | struct dwarf2_cu *cu; | |
608 | ||
3019eac3 DE |
609 | /* Non-NULL if reading a DWO file. */ |
610 | struct dwo_file *dwo_file; | |
611 | ||
dee91e82 | 612 | /* The section the die comes from. |
3019eac3 | 613 | This is either .debug_info or .debug_types, or the .dwo variants. */ |
dee91e82 DE |
614 | struct dwarf2_section_info *die_section; |
615 | ||
616 | /* die_section->buffer. */ | |
617 | gdb_byte *buffer; | |
f664829e DE |
618 | |
619 | /* The end of the buffer. */ | |
620 | const gdb_byte *buffer_end; | |
93311388 DE |
621 | }; |
622 | ||
fd820528 | 623 | /* Type of function passed to init_cutu_and_read_dies, et.al. */ |
dee91e82 DE |
624 | typedef void (die_reader_func_ftype) (const struct die_reader_specs *reader, |
625 | gdb_byte *info_ptr, | |
626 | struct die_info *comp_unit_die, | |
627 | int has_children, | |
628 | void *data); | |
629 | ||
debd256d JB |
630 | /* The line number information for a compilation unit (found in the |
631 | .debug_line section) begins with a "statement program header", | |
632 | which contains the following information. */ | |
633 | struct line_header | |
634 | { | |
635 | unsigned int total_length; | |
636 | unsigned short version; | |
637 | unsigned int header_length; | |
638 | unsigned char minimum_instruction_length; | |
2dc7f7b3 | 639 | unsigned char maximum_ops_per_instruction; |
debd256d JB |
640 | unsigned char default_is_stmt; |
641 | int line_base; | |
642 | unsigned char line_range; | |
643 | unsigned char opcode_base; | |
644 | ||
645 | /* standard_opcode_lengths[i] is the number of operands for the | |
646 | standard opcode whose value is i. This means that | |
647 | standard_opcode_lengths[0] is unused, and the last meaningful | |
648 | element is standard_opcode_lengths[opcode_base - 1]. */ | |
649 | unsigned char *standard_opcode_lengths; | |
650 | ||
651 | /* The include_directories table. NOTE! These strings are not | |
652 | allocated with xmalloc; instead, they are pointers into | |
653 | debug_line_buffer. If you try to free them, `free' will get | |
654 | indigestion. */ | |
655 | unsigned int num_include_dirs, include_dirs_size; | |
656 | char **include_dirs; | |
657 | ||
658 | /* The file_names table. NOTE! These strings are not allocated | |
659 | with xmalloc; instead, they are pointers into debug_line_buffer. | |
660 | Don't try to free them directly. */ | |
661 | unsigned int num_file_names, file_names_size; | |
662 | struct file_entry | |
c906108c | 663 | { |
debd256d JB |
664 | char *name; |
665 | unsigned int dir_index; | |
666 | unsigned int mod_time; | |
667 | unsigned int length; | |
aaa75496 | 668 | int included_p; /* Non-zero if referenced by the Line Number Program. */ |
cb1df416 | 669 | struct symtab *symtab; /* The associated symbol table, if any. */ |
debd256d JB |
670 | } *file_names; |
671 | ||
672 | /* The start and end of the statement program following this | |
6502dd73 | 673 | header. These point into dwarf2_per_objfile->line_buffer. */ |
fe1b8b76 | 674 | gdb_byte *statement_program_start, *statement_program_end; |
debd256d | 675 | }; |
c906108c SS |
676 | |
677 | /* When we construct a partial symbol table entry we only | |
0963b4bd | 678 | need this much information. */ |
c906108c SS |
679 | struct partial_die_info |
680 | { | |
72bf9492 | 681 | /* Offset of this DIE. */ |
b64f50a1 | 682 | sect_offset offset; |
72bf9492 DJ |
683 | |
684 | /* DWARF-2 tag for this DIE. */ | |
685 | ENUM_BITFIELD(dwarf_tag) tag : 16; | |
686 | ||
72bf9492 DJ |
687 | /* Assorted flags describing the data found in this DIE. */ |
688 | unsigned int has_children : 1; | |
689 | unsigned int is_external : 1; | |
690 | unsigned int is_declaration : 1; | |
691 | unsigned int has_type : 1; | |
692 | unsigned int has_specification : 1; | |
693 | unsigned int has_pc_info : 1; | |
481860b3 | 694 | unsigned int may_be_inlined : 1; |
72bf9492 DJ |
695 | |
696 | /* Flag set if the SCOPE field of this structure has been | |
697 | computed. */ | |
698 | unsigned int scope_set : 1; | |
699 | ||
fa4028e9 JB |
700 | /* Flag set if the DIE has a byte_size attribute. */ |
701 | unsigned int has_byte_size : 1; | |
702 | ||
98bfdba5 PA |
703 | /* Flag set if any of the DIE's children are template arguments. */ |
704 | unsigned int has_template_arguments : 1; | |
705 | ||
abc72ce4 DE |
706 | /* Flag set if fixup_partial_die has been called on this die. */ |
707 | unsigned int fixup_called : 1; | |
708 | ||
72bf9492 | 709 | /* The name of this DIE. Normally the value of DW_AT_name, but |
94af9270 | 710 | sometimes a default name for unnamed DIEs. */ |
c906108c | 711 | char *name; |
72bf9492 | 712 | |
abc72ce4 DE |
713 | /* The linkage name, if present. */ |
714 | const char *linkage_name; | |
715 | ||
72bf9492 DJ |
716 | /* The scope to prepend to our children. This is generally |
717 | allocated on the comp_unit_obstack, so will disappear | |
718 | when this compilation unit leaves the cache. */ | |
719 | char *scope; | |
720 | ||
95554aad TT |
721 | /* Some data associated with the partial DIE. The tag determines |
722 | which field is live. */ | |
723 | union | |
724 | { | |
725 | /* The location description associated with this DIE, if any. */ | |
726 | struct dwarf_block *locdesc; | |
727 | /* The offset of an import, for DW_TAG_imported_unit. */ | |
728 | sect_offset offset; | |
729 | } d; | |
72bf9492 DJ |
730 | |
731 | /* If HAS_PC_INFO, the PC range associated with this DIE. */ | |
c906108c SS |
732 | CORE_ADDR lowpc; |
733 | CORE_ADDR highpc; | |
72bf9492 | 734 | |
93311388 | 735 | /* Pointer into the info_buffer (or types_buffer) pointing at the target of |
72bf9492 | 736 | DW_AT_sibling, if any. */ |
abc72ce4 DE |
737 | /* NOTE: This member isn't strictly necessary, read_partial_die could |
738 | return DW_AT_sibling values to its caller load_partial_dies. */ | |
fe1b8b76 | 739 | gdb_byte *sibling; |
72bf9492 DJ |
740 | |
741 | /* If HAS_SPECIFICATION, the offset of the DIE referred to by | |
742 | DW_AT_specification (or DW_AT_abstract_origin or | |
743 | DW_AT_extension). */ | |
b64f50a1 | 744 | sect_offset spec_offset; |
72bf9492 DJ |
745 | |
746 | /* Pointers to this DIE's parent, first child, and next sibling, | |
747 | if any. */ | |
748 | struct partial_die_info *die_parent, *die_child, *die_sibling; | |
c906108c SS |
749 | }; |
750 | ||
0963b4bd | 751 | /* This data structure holds the information of an abbrev. */ |
c906108c SS |
752 | struct abbrev_info |
753 | { | |
754 | unsigned int number; /* number identifying abbrev */ | |
755 | enum dwarf_tag tag; /* dwarf tag */ | |
f3dd6933 DJ |
756 | unsigned short has_children; /* boolean */ |
757 | unsigned short num_attrs; /* number of attributes */ | |
c906108c SS |
758 | struct attr_abbrev *attrs; /* an array of attribute descriptions */ |
759 | struct abbrev_info *next; /* next in chain */ | |
760 | }; | |
761 | ||
762 | struct attr_abbrev | |
763 | { | |
9d25dd43 DE |
764 | ENUM_BITFIELD(dwarf_attribute) name : 16; |
765 | ENUM_BITFIELD(dwarf_form) form : 16; | |
c906108c SS |
766 | }; |
767 | ||
0963b4bd | 768 | /* Attributes have a name and a value. */ |
b60c80d6 DJ |
769 | struct attribute |
770 | { | |
9d25dd43 | 771 | ENUM_BITFIELD(dwarf_attribute) name : 16; |
8285870a JK |
772 | ENUM_BITFIELD(dwarf_form) form : 15; |
773 | ||
774 | /* Has DW_STRING already been updated by dwarf2_canonicalize_name? This | |
775 | field should be in u.str (existing only for DW_STRING) but it is kept | |
776 | here for better struct attribute alignment. */ | |
777 | unsigned int string_is_canonical : 1; | |
778 | ||
b60c80d6 DJ |
779 | union |
780 | { | |
781 | char *str; | |
782 | struct dwarf_block *blk; | |
43bbcdc2 PH |
783 | ULONGEST unsnd; |
784 | LONGEST snd; | |
b60c80d6 | 785 | CORE_ADDR addr; |
348e048f | 786 | struct signatured_type *signatured_type; |
b60c80d6 DJ |
787 | } |
788 | u; | |
789 | }; | |
790 | ||
0963b4bd | 791 | /* This data structure holds a complete die structure. */ |
c906108c SS |
792 | struct die_info |
793 | { | |
76815b17 DE |
794 | /* DWARF-2 tag for this DIE. */ |
795 | ENUM_BITFIELD(dwarf_tag) tag : 16; | |
796 | ||
797 | /* Number of attributes */ | |
98bfdba5 PA |
798 | unsigned char num_attrs; |
799 | ||
800 | /* True if we're presently building the full type name for the | |
801 | type derived from this DIE. */ | |
802 | unsigned char building_fullname : 1; | |
76815b17 DE |
803 | |
804 | /* Abbrev number */ | |
805 | unsigned int abbrev; | |
806 | ||
93311388 | 807 | /* Offset in .debug_info or .debug_types section. */ |
b64f50a1 | 808 | sect_offset offset; |
78ba4af6 JB |
809 | |
810 | /* The dies in a compilation unit form an n-ary tree. PARENT | |
811 | points to this die's parent; CHILD points to the first child of | |
812 | this node; and all the children of a given node are chained | |
4950bc1c | 813 | together via their SIBLING fields. */ |
639d11d3 DC |
814 | struct die_info *child; /* Its first child, if any. */ |
815 | struct die_info *sibling; /* Its next sibling, if any. */ | |
816 | struct die_info *parent; /* Its parent, if any. */ | |
c906108c | 817 | |
b60c80d6 DJ |
818 | /* An array of attributes, with NUM_ATTRS elements. There may be |
819 | zero, but it's not common and zero-sized arrays are not | |
820 | sufficiently portable C. */ | |
821 | struct attribute attrs[1]; | |
c906108c SS |
822 | }; |
823 | ||
0963b4bd | 824 | /* Get at parts of an attribute structure. */ |
c906108c SS |
825 | |
826 | #define DW_STRING(attr) ((attr)->u.str) | |
8285870a | 827 | #define DW_STRING_IS_CANONICAL(attr) ((attr)->string_is_canonical) |
c906108c SS |
828 | #define DW_UNSND(attr) ((attr)->u.unsnd) |
829 | #define DW_BLOCK(attr) ((attr)->u.blk) | |
830 | #define DW_SND(attr) ((attr)->u.snd) | |
831 | #define DW_ADDR(attr) ((attr)->u.addr) | |
348e048f | 832 | #define DW_SIGNATURED_TYPE(attr) ((attr)->u.signatured_type) |
c906108c | 833 | |
0963b4bd | 834 | /* Blocks are a bunch of untyped bytes. */ |
c906108c SS |
835 | struct dwarf_block |
836 | { | |
837 | unsigned int size; | |
1d6edc3c JK |
838 | |
839 | /* Valid only if SIZE is not zero. */ | |
fe1b8b76 | 840 | gdb_byte *data; |
c906108c SS |
841 | }; |
842 | ||
c906108c SS |
843 | #ifndef ATTR_ALLOC_CHUNK |
844 | #define ATTR_ALLOC_CHUNK 4 | |
845 | #endif | |
846 | ||
c906108c SS |
847 | /* Allocate fields for structs, unions and enums in this size. */ |
848 | #ifndef DW_FIELD_ALLOC_CHUNK | |
849 | #define DW_FIELD_ALLOC_CHUNK 4 | |
850 | #endif | |
851 | ||
c906108c SS |
852 | /* FIXME: We might want to set this from BFD via bfd_arch_bits_per_byte, |
853 | but this would require a corresponding change in unpack_field_as_long | |
854 | and friends. */ | |
855 | static int bits_per_byte = 8; | |
856 | ||
857 | /* The routines that read and process dies for a C struct or C++ class | |
858 | pass lists of data member fields and lists of member function fields | |
859 | in an instance of a field_info structure, as defined below. */ | |
860 | struct field_info | |
c5aa993b | 861 | { |
0963b4bd | 862 | /* List of data member and baseclasses fields. */ |
c5aa993b JM |
863 | struct nextfield |
864 | { | |
865 | struct nextfield *next; | |
866 | int accessibility; | |
867 | int virtuality; | |
868 | struct field field; | |
869 | } | |
7d0ccb61 | 870 | *fields, *baseclasses; |
c906108c | 871 | |
7d0ccb61 | 872 | /* Number of fields (including baseclasses). */ |
c5aa993b | 873 | int nfields; |
c906108c | 874 | |
c5aa993b JM |
875 | /* Number of baseclasses. */ |
876 | int nbaseclasses; | |
c906108c | 877 | |
c5aa993b JM |
878 | /* Set if the accesibility of one of the fields is not public. */ |
879 | int non_public_fields; | |
c906108c | 880 | |
c5aa993b JM |
881 | /* Member function fields array, entries are allocated in the order they |
882 | are encountered in the object file. */ | |
883 | struct nextfnfield | |
884 | { | |
885 | struct nextfnfield *next; | |
886 | struct fn_field fnfield; | |
887 | } | |
888 | *fnfields; | |
c906108c | 889 | |
c5aa993b JM |
890 | /* Member function fieldlist array, contains name of possibly overloaded |
891 | member function, number of overloaded member functions and a pointer | |
892 | to the head of the member function field chain. */ | |
893 | struct fnfieldlist | |
894 | { | |
895 | char *name; | |
896 | int length; | |
897 | struct nextfnfield *head; | |
898 | } | |
899 | *fnfieldlists; | |
c906108c | 900 | |
c5aa993b JM |
901 | /* Number of entries in the fnfieldlists array. */ |
902 | int nfnfields; | |
98751a41 JK |
903 | |
904 | /* typedefs defined inside this class. TYPEDEF_FIELD_LIST contains head of | |
905 | a NULL terminated list of TYPEDEF_FIELD_LIST_COUNT elements. */ | |
906 | struct typedef_field_list | |
907 | { | |
908 | struct typedef_field field; | |
909 | struct typedef_field_list *next; | |
910 | } | |
911 | *typedef_field_list; | |
912 | unsigned typedef_field_list_count; | |
c5aa993b | 913 | }; |
c906108c | 914 | |
10b3939b DJ |
915 | /* One item on the queue of compilation units to read in full symbols |
916 | for. */ | |
917 | struct dwarf2_queue_item | |
918 | { | |
919 | struct dwarf2_per_cu_data *per_cu; | |
95554aad | 920 | enum language pretend_language; |
10b3939b DJ |
921 | struct dwarf2_queue_item *next; |
922 | }; | |
923 | ||
924 | /* The current queue. */ | |
925 | static struct dwarf2_queue_item *dwarf2_queue, *dwarf2_queue_tail; | |
926 | ||
ae038cb0 DJ |
927 | /* Loaded secondary compilation units are kept in memory until they |
928 | have not been referenced for the processing of this many | |
929 | compilation units. Set this to zero to disable caching. Cache | |
930 | sizes of up to at least twenty will improve startup time for | |
931 | typical inter-CU-reference binaries, at an obvious memory cost. */ | |
932 | static int dwarf2_max_cache_age = 5; | |
920d2a44 AC |
933 | static void |
934 | show_dwarf2_max_cache_age (struct ui_file *file, int from_tty, | |
935 | struct cmd_list_element *c, const char *value) | |
936 | { | |
3e43a32a MS |
937 | fprintf_filtered (file, _("The upper bound on the age of cached " |
938 | "dwarf2 compilation units is %s.\n"), | |
920d2a44 AC |
939 | value); |
940 | } | |
941 | ||
ae038cb0 | 942 | |
0963b4bd | 943 | /* Various complaints about symbol reading that don't abort the process. */ |
c906108c | 944 | |
4d3c2250 KB |
945 | static void |
946 | dwarf2_statement_list_fits_in_line_number_section_complaint (void) | |
2e276125 | 947 | { |
4d3c2250 | 948 | complaint (&symfile_complaints, |
e2e0b3e5 | 949 | _("statement list doesn't fit in .debug_line section")); |
4d3c2250 KB |
950 | } |
951 | ||
25e43795 DJ |
952 | static void |
953 | dwarf2_debug_line_missing_file_complaint (void) | |
954 | { | |
955 | complaint (&symfile_complaints, | |
956 | _(".debug_line section has line data without a file")); | |
957 | } | |
958 | ||
59205f5a JB |
959 | static void |
960 | dwarf2_debug_line_missing_end_sequence_complaint (void) | |
961 | { | |
962 | complaint (&symfile_complaints, | |
3e43a32a MS |
963 | _(".debug_line section has line " |
964 | "program sequence without an end")); | |
59205f5a JB |
965 | } |
966 | ||
4d3c2250 KB |
967 | static void |
968 | dwarf2_complex_location_expr_complaint (void) | |
2e276125 | 969 | { |
e2e0b3e5 | 970 | complaint (&symfile_complaints, _("location expression too complex")); |
4d3c2250 KB |
971 | } |
972 | ||
4d3c2250 KB |
973 | static void |
974 | dwarf2_const_value_length_mismatch_complaint (const char *arg1, int arg2, | |
975 | int arg3) | |
2e276125 | 976 | { |
4d3c2250 | 977 | complaint (&symfile_complaints, |
3e43a32a MS |
978 | _("const value length mismatch for '%s', got %d, expected %d"), |
979 | arg1, arg2, arg3); | |
4d3c2250 KB |
980 | } |
981 | ||
982 | static void | |
f664829e | 983 | dwarf2_section_buffer_overflow_complaint (struct dwarf2_section_info *section) |
2e276125 | 984 | { |
4d3c2250 | 985 | complaint (&symfile_complaints, |
f664829e DE |
986 | _("debug info runs off end of %s section" |
987 | " [in module %s]"), | |
988 | section->asection->name, | |
989 | bfd_get_filename (section->asection->owner)); | |
4d3c2250 KB |
990 | } |
991 | ||
992 | static void | |
993 | dwarf2_macro_malformed_definition_complaint (const char *arg1) | |
8e19ed76 | 994 | { |
4d3c2250 | 995 | complaint (&symfile_complaints, |
3e43a32a MS |
996 | _("macro debug info contains a " |
997 | "malformed macro definition:\n`%s'"), | |
4d3c2250 KB |
998 | arg1); |
999 | } | |
1000 | ||
1001 | static void | |
1002 | dwarf2_invalid_attrib_class_complaint (const char *arg1, const char *arg2) | |
8b2dbe47 | 1003 | { |
4d3c2250 | 1004 | complaint (&symfile_complaints, |
3e43a32a MS |
1005 | _("invalid attribute class or form for '%s' in '%s'"), |
1006 | arg1, arg2); | |
4d3c2250 | 1007 | } |
c906108c | 1008 | |
c906108c SS |
1009 | /* local function prototypes */ |
1010 | ||
4efb68b1 | 1011 | static void dwarf2_locate_sections (bfd *, asection *, void *); |
c906108c | 1012 | |
aaa75496 JB |
1013 | static void dwarf2_create_include_psymtab (char *, struct partial_symtab *, |
1014 | struct objfile *); | |
1015 | ||
918dd910 JK |
1016 | static void dwarf2_find_base_address (struct die_info *die, |
1017 | struct dwarf2_cu *cu); | |
1018 | ||
c67a9c90 | 1019 | static void dwarf2_build_psymtabs_hard (struct objfile *); |
c906108c | 1020 | |
72bf9492 DJ |
1021 | static void scan_partial_symbols (struct partial_die_info *, |
1022 | CORE_ADDR *, CORE_ADDR *, | |
5734ee8b | 1023 | int, struct dwarf2_cu *); |
c906108c | 1024 | |
72bf9492 DJ |
1025 | static void add_partial_symbol (struct partial_die_info *, |
1026 | struct dwarf2_cu *); | |
63d06c5c | 1027 | |
72bf9492 DJ |
1028 | static void add_partial_namespace (struct partial_die_info *pdi, |
1029 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 1030 | int need_pc, struct dwarf2_cu *cu); |
63d06c5c | 1031 | |
5d7cb8df JK |
1032 | static void add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, |
1033 | CORE_ADDR *highpc, int need_pc, | |
1034 | struct dwarf2_cu *cu); | |
1035 | ||
72bf9492 DJ |
1036 | static void add_partial_enumeration (struct partial_die_info *enum_pdi, |
1037 | struct dwarf2_cu *cu); | |
91c24f0a | 1038 | |
bc30ff58 JB |
1039 | static void add_partial_subprogram (struct partial_die_info *pdi, |
1040 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 1041 | int need_pc, struct dwarf2_cu *cu); |
bc30ff58 | 1042 | |
a14ed312 | 1043 | static void dwarf2_psymtab_to_symtab (struct partial_symtab *); |
c906108c | 1044 | |
a14ed312 | 1045 | static void psymtab_to_symtab_1 (struct partial_symtab *); |
c906108c | 1046 | |
dee91e82 DE |
1047 | static void dwarf2_read_abbrevs (struct dwarf2_cu *, |
1048 | struct dwarf2_section_info *); | |
c906108c | 1049 | |
f3dd6933 | 1050 | static void dwarf2_free_abbrev_table (void *); |
c906108c | 1051 | |
6caca83c CC |
1052 | static unsigned int peek_abbrev_code (bfd *, gdb_byte *); |
1053 | ||
fe1b8b76 | 1054 | static struct abbrev_info *peek_die_abbrev (gdb_byte *, unsigned int *, |
891d2f0b | 1055 | struct dwarf2_cu *); |
72bf9492 | 1056 | |
57349743 | 1057 | static struct abbrev_info *dwarf2_lookup_abbrev (unsigned int, |
e7c27a73 | 1058 | struct dwarf2_cu *); |
c906108c | 1059 | |
dee91e82 DE |
1060 | static struct partial_die_info *load_partial_dies |
1061 | (const struct die_reader_specs *, gdb_byte *, int); | |
72bf9492 | 1062 | |
dee91e82 DE |
1063 | static gdb_byte *read_partial_die (const struct die_reader_specs *, |
1064 | struct partial_die_info *, | |
1065 | struct abbrev_info *, | |
1066 | unsigned int, | |
1067 | gdb_byte *); | |
c906108c | 1068 | |
b64f50a1 | 1069 | static struct partial_die_info *find_partial_die (sect_offset, |
10b3939b | 1070 | struct dwarf2_cu *); |
72bf9492 DJ |
1071 | |
1072 | static void fixup_partial_die (struct partial_die_info *, | |
1073 | struct dwarf2_cu *); | |
1074 | ||
dee91e82 DE |
1075 | static gdb_byte *read_attribute (const struct die_reader_specs *, |
1076 | struct attribute *, struct attr_abbrev *, | |
1077 | gdb_byte *); | |
a8329558 | 1078 | |
fe1b8b76 | 1079 | static unsigned int read_1_byte (bfd *, gdb_byte *); |
c906108c | 1080 | |
fe1b8b76 | 1081 | static int read_1_signed_byte (bfd *, gdb_byte *); |
c906108c | 1082 | |
fe1b8b76 | 1083 | static unsigned int read_2_bytes (bfd *, gdb_byte *); |
c906108c | 1084 | |
fe1b8b76 | 1085 | static unsigned int read_4_bytes (bfd *, gdb_byte *); |
c906108c | 1086 | |
93311388 | 1087 | static ULONGEST read_8_bytes (bfd *, gdb_byte *); |
c906108c | 1088 | |
fe1b8b76 | 1089 | static CORE_ADDR read_address (bfd *, gdb_byte *ptr, struct dwarf2_cu *, |
891d2f0b | 1090 | unsigned int *); |
c906108c | 1091 | |
c764a876 DE |
1092 | static LONGEST read_initial_length (bfd *, gdb_byte *, unsigned int *); |
1093 | ||
1094 | static LONGEST read_checked_initial_length_and_offset | |
1095 | (bfd *, gdb_byte *, const struct comp_unit_head *, | |
1096 | unsigned int *, unsigned int *); | |
613e1657 | 1097 | |
fe1b8b76 | 1098 | static LONGEST read_offset (bfd *, gdb_byte *, const struct comp_unit_head *, |
c764a876 DE |
1099 | unsigned int *); |
1100 | ||
1101 | static LONGEST read_offset_1 (bfd *, gdb_byte *, unsigned int); | |
613e1657 | 1102 | |
fe1b8b76 | 1103 | static gdb_byte *read_n_bytes (bfd *, gdb_byte *, unsigned int); |
c906108c | 1104 | |
9b1c24c8 | 1105 | static char *read_direct_string (bfd *, gdb_byte *, unsigned int *); |
c906108c | 1106 | |
fe1b8b76 JB |
1107 | static char *read_indirect_string (bfd *, gdb_byte *, |
1108 | const struct comp_unit_head *, | |
1109 | unsigned int *); | |
4bdf3d34 | 1110 | |
12df843f | 1111 | static ULONGEST read_unsigned_leb128 (bfd *, gdb_byte *, unsigned int *); |
c906108c | 1112 | |
12df843f | 1113 | static LONGEST read_signed_leb128 (bfd *, gdb_byte *, unsigned int *); |
c906108c | 1114 | |
3019eac3 DE |
1115 | static CORE_ADDR read_addr_index_from_leb128 (struct dwarf2_cu *, gdb_byte *, |
1116 | unsigned int *); | |
1117 | ||
1118 | static char *read_str_index (const struct die_reader_specs *reader, | |
1119 | struct dwarf2_cu *cu, ULONGEST str_index); | |
1120 | ||
e142c38c | 1121 | static void set_cu_language (unsigned int, struct dwarf2_cu *); |
c906108c | 1122 | |
e142c38c DJ |
1123 | static struct attribute *dwarf2_attr (struct die_info *, unsigned int, |
1124 | struct dwarf2_cu *); | |
c906108c | 1125 | |
348e048f DE |
1126 | static struct attribute *dwarf2_attr_no_follow (struct die_info *, |
1127 | unsigned int, | |
1128 | struct dwarf2_cu *); | |
1129 | ||
05cf31d1 JB |
1130 | static int dwarf2_flag_true_p (struct die_info *die, unsigned name, |
1131 | struct dwarf2_cu *cu); | |
1132 | ||
e142c38c | 1133 | static int die_is_declaration (struct die_info *, struct dwarf2_cu *cu); |
3ca72b44 | 1134 | |
e142c38c | 1135 | static struct die_info *die_specification (struct die_info *die, |
f2f0e013 | 1136 | struct dwarf2_cu **); |
63d06c5c | 1137 | |
debd256d JB |
1138 | static void free_line_header (struct line_header *lh); |
1139 | ||
aaa75496 JB |
1140 | static void add_file_name (struct line_header *, char *, unsigned int, |
1141 | unsigned int, unsigned int); | |
1142 | ||
3019eac3 DE |
1143 | static struct line_header *dwarf_decode_line_header (unsigned int offset, |
1144 | struct dwarf2_cu *cu); | |
debd256d | 1145 | |
f3f5162e DE |
1146 | static void dwarf_decode_lines (struct line_header *, const char *, |
1147 | struct dwarf2_cu *, struct partial_symtab *, | |
1148 | int); | |
c906108c | 1149 | |
72b9f47f | 1150 | static void dwarf2_start_subfile (char *, const char *, const char *); |
c906108c | 1151 | |
a14ed312 | 1152 | static struct symbol *new_symbol (struct die_info *, struct type *, |
e7c27a73 | 1153 | struct dwarf2_cu *); |
c906108c | 1154 | |
34eaf542 TT |
1155 | static struct symbol *new_symbol_full (struct die_info *, struct type *, |
1156 | struct dwarf2_cu *, struct symbol *); | |
1157 | ||
a14ed312 | 1158 | static void dwarf2_const_value (struct attribute *, struct symbol *, |
e7c27a73 | 1159 | struct dwarf2_cu *); |
c906108c | 1160 | |
98bfdba5 PA |
1161 | static void dwarf2_const_value_attr (struct attribute *attr, |
1162 | struct type *type, | |
1163 | const char *name, | |
1164 | struct obstack *obstack, | |
12df843f | 1165 | struct dwarf2_cu *cu, LONGEST *value, |
98bfdba5 PA |
1166 | gdb_byte **bytes, |
1167 | struct dwarf2_locexpr_baton **baton); | |
2df3850c | 1168 | |
e7c27a73 | 1169 | static struct type *die_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 1170 | |
b4ba55a1 JB |
1171 | static int need_gnat_info (struct dwarf2_cu *); |
1172 | ||
3e43a32a MS |
1173 | static struct type *die_descriptive_type (struct die_info *, |
1174 | struct dwarf2_cu *); | |
b4ba55a1 JB |
1175 | |
1176 | static void set_descriptive_type (struct type *, struct die_info *, | |
1177 | struct dwarf2_cu *); | |
1178 | ||
e7c27a73 DJ |
1179 | static struct type *die_containing_type (struct die_info *, |
1180 | struct dwarf2_cu *); | |
c906108c | 1181 | |
673bfd45 DE |
1182 | static struct type *lookup_die_type (struct die_info *, struct attribute *, |
1183 | struct dwarf2_cu *); | |
c906108c | 1184 | |
f792889a | 1185 | static struct type *read_type_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1186 | |
673bfd45 DE |
1187 | static struct type *read_type_die_1 (struct die_info *, struct dwarf2_cu *); |
1188 | ||
0d5cff50 | 1189 | static const char *determine_prefix (struct die_info *die, struct dwarf2_cu *); |
63d06c5c | 1190 | |
6e70227d | 1191 | static char *typename_concat (struct obstack *obs, const char *prefix, |
f55ee35c JK |
1192 | const char *suffix, int physname, |
1193 | struct dwarf2_cu *cu); | |
63d06c5c | 1194 | |
e7c27a73 | 1195 | static void read_file_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1196 | |
348e048f DE |
1197 | static void read_type_unit_scope (struct die_info *, struct dwarf2_cu *); |
1198 | ||
e7c27a73 | 1199 | static void read_func_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1200 | |
e7c27a73 | 1201 | static void read_lexical_block_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1202 | |
96408a79 SA |
1203 | static void read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu); |
1204 | ||
ff013f42 JK |
1205 | static int dwarf2_ranges_read (unsigned, CORE_ADDR *, CORE_ADDR *, |
1206 | struct dwarf2_cu *, struct partial_symtab *); | |
1207 | ||
a14ed312 | 1208 | static int dwarf2_get_pc_bounds (struct die_info *, |
d85a05f0 DJ |
1209 | CORE_ADDR *, CORE_ADDR *, struct dwarf2_cu *, |
1210 | struct partial_symtab *); | |
c906108c | 1211 | |
fae299cd DC |
1212 | static void get_scope_pc_bounds (struct die_info *, |
1213 | CORE_ADDR *, CORE_ADDR *, | |
1214 | struct dwarf2_cu *); | |
1215 | ||
801e3a5b JB |
1216 | static void dwarf2_record_block_ranges (struct die_info *, struct block *, |
1217 | CORE_ADDR, struct dwarf2_cu *); | |
1218 | ||
a14ed312 | 1219 | static void dwarf2_add_field (struct field_info *, struct die_info *, |
e7c27a73 | 1220 | struct dwarf2_cu *); |
c906108c | 1221 | |
a14ed312 | 1222 | static void dwarf2_attach_fields_to_type (struct field_info *, |
e7c27a73 | 1223 | struct type *, struct dwarf2_cu *); |
c906108c | 1224 | |
a14ed312 | 1225 | static void dwarf2_add_member_fn (struct field_info *, |
e26fb1d7 | 1226 | struct die_info *, struct type *, |
e7c27a73 | 1227 | struct dwarf2_cu *); |
c906108c | 1228 | |
a14ed312 | 1229 | static void dwarf2_attach_fn_fields_to_type (struct field_info *, |
3e43a32a MS |
1230 | struct type *, |
1231 | struct dwarf2_cu *); | |
c906108c | 1232 | |
134d01f1 | 1233 | static void process_structure_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1234 | |
e7c27a73 | 1235 | static void read_common_block (struct die_info *, struct dwarf2_cu *); |
c906108c | 1236 | |
e7c27a73 | 1237 | static void read_namespace (struct die_info *die, struct dwarf2_cu *); |
d9fa45fe | 1238 | |
5d7cb8df JK |
1239 | static void read_module (struct die_info *die, struct dwarf2_cu *cu); |
1240 | ||
27aa8d6a SW |
1241 | static void read_import_statement (struct die_info *die, struct dwarf2_cu *); |
1242 | ||
f55ee35c JK |
1243 | static struct type *read_module_type (struct die_info *die, |
1244 | struct dwarf2_cu *cu); | |
1245 | ||
38d518c9 | 1246 | static const char *namespace_name (struct die_info *die, |
e142c38c | 1247 | int *is_anonymous, struct dwarf2_cu *); |
38d518c9 | 1248 | |
134d01f1 | 1249 | static void process_enumeration_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1250 | |
e7c27a73 | 1251 | static CORE_ADDR decode_locdesc (struct dwarf_block *, struct dwarf2_cu *); |
c906108c | 1252 | |
6e70227d | 1253 | static enum dwarf_array_dim_ordering read_array_order (struct die_info *, |
7ca2d3a3 DL |
1254 | struct dwarf2_cu *); |
1255 | ||
dee91e82 | 1256 | static struct die_info *read_die_and_children (const struct die_reader_specs *, |
93311388 | 1257 | gdb_byte *info_ptr, |
fe1b8b76 | 1258 | gdb_byte **new_info_ptr, |
639d11d3 DC |
1259 | struct die_info *parent); |
1260 | ||
dee91e82 | 1261 | static struct die_info *read_die_and_siblings (const struct die_reader_specs *, |
93311388 | 1262 | gdb_byte *info_ptr, |
fe1b8b76 | 1263 | gdb_byte **new_info_ptr, |
639d11d3 DC |
1264 | struct die_info *parent); |
1265 | ||
3019eac3 DE |
1266 | static gdb_byte *read_full_die_1 (const struct die_reader_specs *, |
1267 | struct die_info **, gdb_byte *, int *, int); | |
1268 | ||
dee91e82 DE |
1269 | static gdb_byte *read_full_die (const struct die_reader_specs *, |
1270 | struct die_info **, gdb_byte *, int *); | |
93311388 | 1271 | |
e7c27a73 | 1272 | static void process_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1273 | |
71c25dea TT |
1274 | static char *dwarf2_canonicalize_name (char *, struct dwarf2_cu *, |
1275 | struct obstack *); | |
1276 | ||
e142c38c | 1277 | static char *dwarf2_name (struct die_info *die, struct dwarf2_cu *); |
9219021c | 1278 | |
98bfdba5 PA |
1279 | static const char *dwarf2_full_name (char *name, |
1280 | struct die_info *die, | |
1281 | struct dwarf2_cu *cu); | |
1282 | ||
e142c38c | 1283 | static struct die_info *dwarf2_extension (struct die_info *die, |
f2f0e013 | 1284 | struct dwarf2_cu **); |
9219021c | 1285 | |
f39c6ffd | 1286 | static const char *dwarf_tag_name (unsigned int); |
c906108c | 1287 | |
f39c6ffd | 1288 | static const char *dwarf_attr_name (unsigned int); |
c906108c | 1289 | |
f39c6ffd | 1290 | static const char *dwarf_form_name (unsigned int); |
c906108c | 1291 | |
a14ed312 | 1292 | static char *dwarf_bool_name (unsigned int); |
c906108c | 1293 | |
f39c6ffd | 1294 | static const char *dwarf_type_encoding_name (unsigned int); |
c906108c | 1295 | |
f9aca02d | 1296 | static struct die_info *sibling_die (struct die_info *); |
c906108c | 1297 | |
d97bc12b DE |
1298 | static void dump_die_shallow (struct ui_file *, int indent, struct die_info *); |
1299 | ||
1300 | static void dump_die_for_error (struct die_info *); | |
1301 | ||
1302 | static void dump_die_1 (struct ui_file *, int level, int max_level, | |
1303 | struct die_info *); | |
c906108c | 1304 | |
d97bc12b | 1305 | /*static*/ void dump_die (struct die_info *, int max_level); |
c906108c | 1306 | |
51545339 | 1307 | static void store_in_ref_table (struct die_info *, |
10b3939b | 1308 | struct dwarf2_cu *); |
c906108c | 1309 | |
93311388 DE |
1310 | static int is_ref_attr (struct attribute *); |
1311 | ||
b64f50a1 | 1312 | static sect_offset dwarf2_get_ref_die_offset (struct attribute *); |
c906108c | 1313 | |
43bbcdc2 | 1314 | static LONGEST dwarf2_get_attr_constant_value (struct attribute *, int); |
a02abb62 | 1315 | |
348e048f DE |
1316 | static struct die_info *follow_die_ref_or_sig (struct die_info *, |
1317 | struct attribute *, | |
1318 | struct dwarf2_cu **); | |
1319 | ||
10b3939b DJ |
1320 | static struct die_info *follow_die_ref (struct die_info *, |
1321 | struct attribute *, | |
f2f0e013 | 1322 | struct dwarf2_cu **); |
c906108c | 1323 | |
348e048f DE |
1324 | static struct die_info *follow_die_sig (struct die_info *, |
1325 | struct attribute *, | |
1326 | struct dwarf2_cu **); | |
1327 | ||
6c83ed52 TT |
1328 | static struct signatured_type *lookup_signatured_type_at_offset |
1329 | (struct objfile *objfile, | |
b64f50a1 | 1330 | struct dwarf2_section_info *section, sect_offset offset); |
6c83ed52 | 1331 | |
e5fe5e75 | 1332 | static void load_full_type_unit (struct dwarf2_per_cu_data *per_cu); |
348e048f | 1333 | |
52dc124a | 1334 | static void read_signatured_type (struct signatured_type *); |
348e048f | 1335 | |
c906108c SS |
1336 | /* memory allocation interface */ |
1337 | ||
7b5a2f43 | 1338 | static struct dwarf_block *dwarf_alloc_block (struct dwarf2_cu *); |
c906108c | 1339 | |
f3dd6933 | 1340 | static struct abbrev_info *dwarf_alloc_abbrev (struct dwarf2_cu *); |
c906108c | 1341 | |
b60c80d6 | 1342 | static struct die_info *dwarf_alloc_die (struct dwarf2_cu *, int); |
c906108c | 1343 | |
2e276125 | 1344 | static void dwarf_decode_macros (struct line_header *, unsigned int, |
cf2c3c16 TT |
1345 | char *, bfd *, struct dwarf2_cu *, |
1346 | struct dwarf2_section_info *, | |
fceca515 | 1347 | int, const char *); |
2e276125 | 1348 | |
8e19ed76 PS |
1349 | static int attr_form_is_block (struct attribute *); |
1350 | ||
3690dd37 JB |
1351 | static int attr_form_is_section_offset (struct attribute *); |
1352 | ||
1353 | static int attr_form_is_constant (struct attribute *); | |
1354 | ||
8cf6f0b1 TT |
1355 | static void fill_in_loclist_baton (struct dwarf2_cu *cu, |
1356 | struct dwarf2_loclist_baton *baton, | |
1357 | struct attribute *attr); | |
1358 | ||
93e7bd98 DJ |
1359 | static void dwarf2_symbol_mark_computed (struct attribute *attr, |
1360 | struct symbol *sym, | |
1361 | struct dwarf2_cu *cu); | |
4c2df51b | 1362 | |
dee91e82 DE |
1363 | static gdb_byte *skip_one_die (const struct die_reader_specs *reader, |
1364 | gdb_byte *info_ptr, | |
1365 | struct abbrev_info *abbrev); | |
4bb7a0a7 | 1366 | |
72bf9492 DJ |
1367 | static void free_stack_comp_unit (void *); |
1368 | ||
72bf9492 DJ |
1369 | static hashval_t partial_die_hash (const void *item); |
1370 | ||
1371 | static int partial_die_eq (const void *item_lhs, const void *item_rhs); | |
1372 | ||
ae038cb0 | 1373 | static struct dwarf2_per_cu_data *dwarf2_find_containing_comp_unit |
b64f50a1 | 1374 | (sect_offset offset, struct objfile *objfile); |
ae038cb0 | 1375 | |
9816fde3 | 1376 | static void init_one_comp_unit (struct dwarf2_cu *cu, |
23745b47 | 1377 | struct dwarf2_per_cu_data *per_cu); |
9816fde3 JK |
1378 | |
1379 | static void prepare_one_comp_unit (struct dwarf2_cu *cu, | |
95554aad TT |
1380 | struct die_info *comp_unit_die, |
1381 | enum language pretend_language); | |
93311388 | 1382 | |
68dc6402 | 1383 | static void free_heap_comp_unit (void *); |
ae038cb0 DJ |
1384 | |
1385 | static void free_cached_comp_units (void *); | |
1386 | ||
1387 | static void age_cached_comp_units (void); | |
1388 | ||
dee91e82 | 1389 | static void free_one_cached_comp_unit (struct dwarf2_per_cu_data *); |
ae038cb0 | 1390 | |
f792889a DJ |
1391 | static struct type *set_die_type (struct die_info *, struct type *, |
1392 | struct dwarf2_cu *); | |
1c379e20 | 1393 | |
ae038cb0 DJ |
1394 | static void create_all_comp_units (struct objfile *); |
1395 | ||
0e50663e | 1396 | static int create_all_type_units (struct objfile *); |
1fd400ff | 1397 | |
95554aad TT |
1398 | static void load_full_comp_unit (struct dwarf2_per_cu_data *, |
1399 | enum language); | |
10b3939b | 1400 | |
95554aad TT |
1401 | static void process_full_comp_unit (struct dwarf2_per_cu_data *, |
1402 | enum language); | |
10b3939b DJ |
1403 | |
1404 | static void dwarf2_add_dependence (struct dwarf2_cu *, | |
1405 | struct dwarf2_per_cu_data *); | |
1406 | ||
ae038cb0 DJ |
1407 | static void dwarf2_mark (struct dwarf2_cu *); |
1408 | ||
1409 | static void dwarf2_clear_marks (struct dwarf2_per_cu_data *); | |
1410 | ||
b64f50a1 | 1411 | static struct type *get_die_type_at_offset (sect_offset, |
673bfd45 DE |
1412 | struct dwarf2_per_cu_data *per_cu); |
1413 | ||
f792889a | 1414 | static struct type *get_die_type (struct die_info *die, struct dwarf2_cu *cu); |
72019c9c | 1415 | |
9291a0cd TT |
1416 | static void dwarf2_release_queue (void *dummy); |
1417 | ||
95554aad TT |
1418 | static void queue_comp_unit (struct dwarf2_per_cu_data *per_cu, |
1419 | enum language pretend_language); | |
1420 | ||
1421 | static int maybe_queue_comp_unit (struct dwarf2_cu *this_cu, | |
1422 | struct dwarf2_per_cu_data *per_cu, | |
1423 | enum language pretend_language); | |
9291a0cd | 1424 | |
a0f42c21 | 1425 | static void process_queue (void); |
9291a0cd TT |
1426 | |
1427 | static void find_file_and_directory (struct die_info *die, | |
1428 | struct dwarf2_cu *cu, | |
1429 | char **name, char **comp_dir); | |
1430 | ||
1431 | static char *file_full_name (int file, struct line_header *lh, | |
1432 | const char *comp_dir); | |
1433 | ||
9ff913ba DE |
1434 | static gdb_byte *read_and_check_comp_unit_head |
1435 | (struct comp_unit_head *header, | |
1436 | struct dwarf2_section_info *section, gdb_byte *info_ptr, | |
1437 | int is_debug_types_section); | |
9291a0cd | 1438 | |
fd820528 DE |
1439 | static void init_cutu_and_read_dies |
1440 | (struct dwarf2_per_cu_data *this_cu, int use_existing_cu, int keep, | |
3019eac3 DE |
1441 | die_reader_func_ftype *die_reader_func, void *data); |
1442 | ||
dee91e82 DE |
1443 | static void init_cutu_and_read_dies_simple |
1444 | (struct dwarf2_per_cu_data *this_cu, | |
1445 | die_reader_func_ftype *die_reader_func, void *data); | |
9291a0cd | 1446 | |
673bfd45 | 1447 | static htab_t allocate_signatured_type_table (struct objfile *objfile); |
1fd400ff | 1448 | |
95554aad | 1449 | static void process_psymtab_comp_unit (struct dwarf2_per_cu_data *, int); |
dee91e82 | 1450 | |
3019eac3 DE |
1451 | static htab_t allocate_dwo_unit_table (struct objfile *objfile); |
1452 | ||
1453 | static struct dwo_unit *lookup_dwo_comp_unit | |
1454 | (struct dwarf2_per_cu_data *, char *, const char *, ULONGEST); | |
1455 | ||
1456 | static struct dwo_unit *lookup_dwo_type_unit | |
1457 | (struct signatured_type *, char *, const char *); | |
1458 | ||
1459 | static void free_dwo_file_cleanup (void *); | |
1460 | ||
1461 | static void munmap_section_buffer (struct dwarf2_section_info *); | |
1462 | ||
95554aad TT |
1463 | static void process_cu_includes (void); |
1464 | ||
9291a0cd TT |
1465 | #if WORDS_BIGENDIAN |
1466 | ||
1467 | /* Convert VALUE between big- and little-endian. */ | |
1468 | static offset_type | |
1469 | byte_swap (offset_type value) | |
1470 | { | |
1471 | offset_type result; | |
1472 | ||
1473 | result = (value & 0xff) << 24; | |
1474 | result |= (value & 0xff00) << 8; | |
1475 | result |= (value & 0xff0000) >> 8; | |
1476 | result |= (value & 0xff000000) >> 24; | |
1477 | return result; | |
1478 | } | |
1479 | ||
1480 | #define MAYBE_SWAP(V) byte_swap (V) | |
1481 | ||
1482 | #else | |
1483 | #define MAYBE_SWAP(V) (V) | |
1484 | #endif /* WORDS_BIGENDIAN */ | |
1485 | ||
1486 | /* The suffix for an index file. */ | |
1487 | #define INDEX_SUFFIX ".gdb-index" | |
1488 | ||
3da10d80 KS |
1489 | static const char *dwarf2_physname (char *name, struct die_info *die, |
1490 | struct dwarf2_cu *cu); | |
1491 | ||
c906108c | 1492 | /* Try to locate the sections we need for DWARF 2 debugging |
251d32d9 TG |
1493 | information and return true if we have enough to do something. |
1494 | NAMES points to the dwarf2 section names, or is NULL if the standard | |
1495 | ELF names are used. */ | |
c906108c SS |
1496 | |
1497 | int | |
251d32d9 TG |
1498 | dwarf2_has_info (struct objfile *objfile, |
1499 | const struct dwarf2_debug_sections *names) | |
c906108c | 1500 | { |
be391dca TT |
1501 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); |
1502 | if (!dwarf2_per_objfile) | |
1503 | { | |
1504 | /* Initialize per-objfile state. */ | |
1505 | struct dwarf2_per_objfile *data | |
1506 | = obstack_alloc (&objfile->objfile_obstack, sizeof (*data)); | |
9a619af0 | 1507 | |
be391dca TT |
1508 | memset (data, 0, sizeof (*data)); |
1509 | set_objfile_data (objfile, dwarf2_objfile_data_key, data); | |
1510 | dwarf2_per_objfile = data; | |
6502dd73 | 1511 | |
251d32d9 TG |
1512 | bfd_map_over_sections (objfile->obfd, dwarf2_locate_sections, |
1513 | (void *) names); | |
be391dca TT |
1514 | dwarf2_per_objfile->objfile = objfile; |
1515 | } | |
1516 | return (dwarf2_per_objfile->info.asection != NULL | |
1517 | && dwarf2_per_objfile->abbrev.asection != NULL); | |
c906108c SS |
1518 | } |
1519 | ||
251d32d9 TG |
1520 | /* When loading sections, we look either for uncompressed section or for |
1521 | compressed section names. */ | |
233a11ab CS |
1522 | |
1523 | static int | |
251d32d9 TG |
1524 | section_is_p (const char *section_name, |
1525 | const struct dwarf2_section_names *names) | |
233a11ab | 1526 | { |
251d32d9 TG |
1527 | if (names->normal != NULL |
1528 | && strcmp (section_name, names->normal) == 0) | |
1529 | return 1; | |
1530 | if (names->compressed != NULL | |
1531 | && strcmp (section_name, names->compressed) == 0) | |
1532 | return 1; | |
1533 | return 0; | |
233a11ab CS |
1534 | } |
1535 | ||
c906108c SS |
1536 | /* This function is mapped across the sections and remembers the |
1537 | offset and size of each of the debugging sections we are interested | |
1538 | in. */ | |
1539 | ||
1540 | static void | |
251d32d9 | 1541 | dwarf2_locate_sections (bfd *abfd, asection *sectp, void *vnames) |
c906108c | 1542 | { |
251d32d9 TG |
1543 | const struct dwarf2_debug_sections *names; |
1544 | ||
1545 | if (vnames == NULL) | |
1546 | names = &dwarf2_elf_names; | |
1547 | else | |
1548 | names = (const struct dwarf2_debug_sections *) vnames; | |
1549 | ||
1550 | if (section_is_p (sectp->name, &names->info)) | |
c906108c | 1551 | { |
dce234bc PP |
1552 | dwarf2_per_objfile->info.asection = sectp; |
1553 | dwarf2_per_objfile->info.size = bfd_get_section_size (sectp); | |
c906108c | 1554 | } |
251d32d9 | 1555 | else if (section_is_p (sectp->name, &names->abbrev)) |
c906108c | 1556 | { |
dce234bc PP |
1557 | dwarf2_per_objfile->abbrev.asection = sectp; |
1558 | dwarf2_per_objfile->abbrev.size = bfd_get_section_size (sectp); | |
c906108c | 1559 | } |
251d32d9 | 1560 | else if (section_is_p (sectp->name, &names->line)) |
c906108c | 1561 | { |
dce234bc PP |
1562 | dwarf2_per_objfile->line.asection = sectp; |
1563 | dwarf2_per_objfile->line.size = bfd_get_section_size (sectp); | |
c906108c | 1564 | } |
251d32d9 | 1565 | else if (section_is_p (sectp->name, &names->loc)) |
c906108c | 1566 | { |
dce234bc PP |
1567 | dwarf2_per_objfile->loc.asection = sectp; |
1568 | dwarf2_per_objfile->loc.size = bfd_get_section_size (sectp); | |
c906108c | 1569 | } |
251d32d9 | 1570 | else if (section_is_p (sectp->name, &names->macinfo)) |
c906108c | 1571 | { |
dce234bc PP |
1572 | dwarf2_per_objfile->macinfo.asection = sectp; |
1573 | dwarf2_per_objfile->macinfo.size = bfd_get_section_size (sectp); | |
c906108c | 1574 | } |
cf2c3c16 TT |
1575 | else if (section_is_p (sectp->name, &names->macro)) |
1576 | { | |
1577 | dwarf2_per_objfile->macro.asection = sectp; | |
1578 | dwarf2_per_objfile->macro.size = bfd_get_section_size (sectp); | |
1579 | } | |
251d32d9 | 1580 | else if (section_is_p (sectp->name, &names->str)) |
c906108c | 1581 | { |
dce234bc PP |
1582 | dwarf2_per_objfile->str.asection = sectp; |
1583 | dwarf2_per_objfile->str.size = bfd_get_section_size (sectp); | |
c906108c | 1584 | } |
3019eac3 DE |
1585 | else if (section_is_p (sectp->name, &names->addr)) |
1586 | { | |
1587 | dwarf2_per_objfile->addr.asection = sectp; | |
1588 | dwarf2_per_objfile->addr.size = bfd_get_section_size (sectp); | |
1589 | } | |
251d32d9 | 1590 | else if (section_is_p (sectp->name, &names->frame)) |
b6af0555 | 1591 | { |
dce234bc PP |
1592 | dwarf2_per_objfile->frame.asection = sectp; |
1593 | dwarf2_per_objfile->frame.size = bfd_get_section_size (sectp); | |
b6af0555 | 1594 | } |
251d32d9 | 1595 | else if (section_is_p (sectp->name, &names->eh_frame)) |
b6af0555 | 1596 | { |
81b9b86e | 1597 | flagword aflag = bfd_get_section_flags (abfd, sectp); |
9a619af0 | 1598 | |
3799ccc6 EZ |
1599 | if (aflag & SEC_HAS_CONTENTS) |
1600 | { | |
dce234bc PP |
1601 | dwarf2_per_objfile->eh_frame.asection = sectp; |
1602 | dwarf2_per_objfile->eh_frame.size = bfd_get_section_size (sectp); | |
3799ccc6 | 1603 | } |
b6af0555 | 1604 | } |
251d32d9 | 1605 | else if (section_is_p (sectp->name, &names->ranges)) |
af34e669 | 1606 | { |
dce234bc PP |
1607 | dwarf2_per_objfile->ranges.asection = sectp; |
1608 | dwarf2_per_objfile->ranges.size = bfd_get_section_size (sectp); | |
af34e669 | 1609 | } |
251d32d9 | 1610 | else if (section_is_p (sectp->name, &names->types)) |
348e048f | 1611 | { |
8b70b953 TT |
1612 | struct dwarf2_section_info type_section; |
1613 | ||
1614 | memset (&type_section, 0, sizeof (type_section)); | |
1615 | type_section.asection = sectp; | |
1616 | type_section.size = bfd_get_section_size (sectp); | |
1617 | ||
1618 | VEC_safe_push (dwarf2_section_info_def, dwarf2_per_objfile->types, | |
1619 | &type_section); | |
348e048f | 1620 | } |
251d32d9 | 1621 | else if (section_is_p (sectp->name, &names->gdb_index)) |
9291a0cd TT |
1622 | { |
1623 | dwarf2_per_objfile->gdb_index.asection = sectp; | |
1624 | dwarf2_per_objfile->gdb_index.size = bfd_get_section_size (sectp); | |
1625 | } | |
dce234bc | 1626 | |
72dca2f5 FR |
1627 | if ((bfd_get_section_flags (abfd, sectp) & SEC_LOAD) |
1628 | && bfd_section_vma (abfd, sectp) == 0) | |
1629 | dwarf2_per_objfile->has_section_at_zero = 1; | |
c906108c SS |
1630 | } |
1631 | ||
dce234bc PP |
1632 | /* Decompress a section that was compressed using zlib. Store the |
1633 | decompressed buffer, and its size, in OUTBUF and OUTSIZE. */ | |
233a11ab CS |
1634 | |
1635 | static void | |
dce234bc PP |
1636 | zlib_decompress_section (struct objfile *objfile, asection *sectp, |
1637 | gdb_byte **outbuf, bfd_size_type *outsize) | |
1638 | { | |
3019eac3 | 1639 | bfd *abfd = sectp->owner; |
dce234bc PP |
1640 | #ifndef HAVE_ZLIB_H |
1641 | error (_("Support for zlib-compressed DWARF data (from '%s') " | |
1642 | "is disabled in this copy of GDB"), | |
1643 | bfd_get_filename (abfd)); | |
1644 | #else | |
1645 | bfd_size_type compressed_size = bfd_get_section_size (sectp); | |
1646 | gdb_byte *compressed_buffer = xmalloc (compressed_size); | |
affddf13 | 1647 | struct cleanup *cleanup = make_cleanup (xfree, compressed_buffer); |
dce234bc PP |
1648 | bfd_size_type uncompressed_size; |
1649 | gdb_byte *uncompressed_buffer; | |
1650 | z_stream strm; | |
1651 | int rc; | |
1652 | int header_size = 12; | |
1653 | ||
1654 | if (bfd_seek (abfd, sectp->filepos, SEEK_SET) != 0 | |
3e43a32a MS |
1655 | || bfd_bread (compressed_buffer, |
1656 | compressed_size, abfd) != compressed_size) | |
dce234bc PP |
1657 | error (_("Dwarf Error: Can't read DWARF data from '%s'"), |
1658 | bfd_get_filename (abfd)); | |
1659 | ||
1660 | /* Read the zlib header. In this case, it should be "ZLIB" followed | |
1661 | by the uncompressed section size, 8 bytes in big-endian order. */ | |
1662 | if (compressed_size < header_size | |
1663 | || strncmp (compressed_buffer, "ZLIB", 4) != 0) | |
1664 | error (_("Dwarf Error: Corrupt DWARF ZLIB header from '%s'"), | |
1665 | bfd_get_filename (abfd)); | |
1666 | uncompressed_size = compressed_buffer[4]; uncompressed_size <<= 8; | |
1667 | uncompressed_size += compressed_buffer[5]; uncompressed_size <<= 8; | |
1668 | uncompressed_size += compressed_buffer[6]; uncompressed_size <<= 8; | |
1669 | uncompressed_size += compressed_buffer[7]; uncompressed_size <<= 8; | |
1670 | uncompressed_size += compressed_buffer[8]; uncompressed_size <<= 8; | |
1671 | uncompressed_size += compressed_buffer[9]; uncompressed_size <<= 8; | |
1672 | uncompressed_size += compressed_buffer[10]; uncompressed_size <<= 8; | |
1673 | uncompressed_size += compressed_buffer[11]; | |
1674 | ||
1675 | /* It is possible the section consists of several compressed | |
1676 | buffers concatenated together, so we uncompress in a loop. */ | |
1677 | strm.zalloc = NULL; | |
1678 | strm.zfree = NULL; | |
1679 | strm.opaque = NULL; | |
1680 | strm.avail_in = compressed_size - header_size; | |
1681 | strm.next_in = (Bytef*) compressed_buffer + header_size; | |
1682 | strm.avail_out = uncompressed_size; | |
1683 | uncompressed_buffer = obstack_alloc (&objfile->objfile_obstack, | |
1684 | uncompressed_size); | |
1685 | rc = inflateInit (&strm); | |
1686 | while (strm.avail_in > 0) | |
1687 | { | |
1688 | if (rc != Z_OK) | |
1689 | error (_("Dwarf Error: setting up DWARF uncompression in '%s': %d"), | |
1690 | bfd_get_filename (abfd), rc); | |
1691 | strm.next_out = ((Bytef*) uncompressed_buffer | |
1692 | + (uncompressed_size - strm.avail_out)); | |
1693 | rc = inflate (&strm, Z_FINISH); | |
1694 | if (rc != Z_STREAM_END) | |
1695 | error (_("Dwarf Error: zlib error uncompressing from '%s': %d"), | |
1696 | bfd_get_filename (abfd), rc); | |
1697 | rc = inflateReset (&strm); | |
1698 | } | |
1699 | rc = inflateEnd (&strm); | |
1700 | if (rc != Z_OK | |
1701 | || strm.avail_out != 0) | |
1702 | error (_("Dwarf Error: concluding DWARF uncompression in '%s': %d"), | |
1703 | bfd_get_filename (abfd), rc); | |
1704 | ||
affddf13 | 1705 | do_cleanups (cleanup); |
dce234bc PP |
1706 | *outbuf = uncompressed_buffer; |
1707 | *outsize = uncompressed_size; | |
1708 | #endif | |
233a11ab CS |
1709 | } |
1710 | ||
fceca515 DE |
1711 | /* A helper function that decides whether a section is empty, |
1712 | or not present. */ | |
9e0ac564 TT |
1713 | |
1714 | static int | |
1715 | dwarf2_section_empty_p (struct dwarf2_section_info *info) | |
1716 | { | |
1717 | return info->asection == NULL || info->size == 0; | |
1718 | } | |
1719 | ||
3019eac3 DE |
1720 | /* Read the contents of the section INFO. |
1721 | OBJFILE is the main object file, but not necessarily the file where | |
1722 | the section comes from. E.g., for DWO files INFO->asection->owner | |
1723 | is the bfd of the DWO file. | |
dce234bc | 1724 | If the section is compressed, uncompress it before returning. */ |
c906108c | 1725 | |
dce234bc PP |
1726 | static void |
1727 | dwarf2_read_section (struct objfile *objfile, struct dwarf2_section_info *info) | |
c906108c | 1728 | { |
dce234bc | 1729 | asection *sectp = info->asection; |
3019eac3 | 1730 | bfd *abfd; |
dce234bc PP |
1731 | gdb_byte *buf, *retbuf; |
1732 | unsigned char header[4]; | |
c906108c | 1733 | |
be391dca TT |
1734 | if (info->readin) |
1735 | return; | |
dce234bc | 1736 | info->buffer = NULL; |
b315ab21 | 1737 | info->map_addr = NULL; |
be391dca | 1738 | info->readin = 1; |
188dd5d6 | 1739 | |
9e0ac564 | 1740 | if (dwarf2_section_empty_p (info)) |
dce234bc | 1741 | return; |
c906108c | 1742 | |
3019eac3 DE |
1743 | /* Note that ABFD may not be from OBJFILE, e.g. a DWO section. */ |
1744 | abfd = sectp->owner; | |
1745 | ||
dce234bc PP |
1746 | /* Check if the file has a 4-byte header indicating compression. */ |
1747 | if (info->size > sizeof (header) | |
1748 | && bfd_seek (abfd, sectp->filepos, SEEK_SET) == 0 | |
1749 | && bfd_bread (header, sizeof (header), abfd) == sizeof (header)) | |
1750 | { | |
1751 | /* Upon decompression, update the buffer and its size. */ | |
1752 | if (strncmp (header, "ZLIB", sizeof (header)) == 0) | |
1753 | { | |
1754 | zlib_decompress_section (objfile, sectp, &info->buffer, | |
1755 | &info->size); | |
1756 | return; | |
1757 | } | |
1758 | } | |
4bdf3d34 | 1759 | |
dce234bc PP |
1760 | #ifdef HAVE_MMAP |
1761 | if (pagesize == 0) | |
1762 | pagesize = getpagesize (); | |
2e276125 | 1763 | |
dce234bc PP |
1764 | /* Only try to mmap sections which are large enough: we don't want to |
1765 | waste space due to fragmentation. Also, only try mmap for sections | |
1766 | without relocations. */ | |
1767 | ||
1768 | if (info->size > 4 * pagesize && (sectp->flags & SEC_RELOC) == 0) | |
1769 | { | |
b315ab21 TG |
1770 | info->buffer = bfd_mmap (abfd, 0, info->size, PROT_READ, |
1771 | MAP_PRIVATE, sectp->filepos, | |
1772 | &info->map_addr, &info->map_len); | |
dce234bc | 1773 | |
b315ab21 | 1774 | if ((caddr_t)info->buffer != MAP_FAILED) |
dce234bc | 1775 | { |
be391dca | 1776 | #if HAVE_POSIX_MADVISE |
b315ab21 | 1777 | posix_madvise (info->map_addr, info->map_len, POSIX_MADV_WILLNEED); |
be391dca | 1778 | #endif |
dce234bc PP |
1779 | return; |
1780 | } | |
1781 | } | |
1782 | #endif | |
1783 | ||
1784 | /* If we get here, we are a normal, not-compressed section. */ | |
1785 | info->buffer = buf | |
1786 | = obstack_alloc (&objfile->objfile_obstack, info->size); | |
1787 | ||
1788 | /* When debugging .o files, we may need to apply relocations; see | |
1789 | http://sourceware.org/ml/gdb-patches/2002-04/msg00136.html . | |
1790 | We never compress sections in .o files, so we only need to | |
1791 | try this when the section is not compressed. */ | |
ac8035ab | 1792 | retbuf = symfile_relocate_debug_section (objfile, sectp, buf); |
dce234bc PP |
1793 | if (retbuf != NULL) |
1794 | { | |
1795 | info->buffer = retbuf; | |
1796 | return; | |
1797 | } | |
1798 | ||
1799 | if (bfd_seek (abfd, sectp->filepos, SEEK_SET) != 0 | |
1800 | || bfd_bread (buf, info->size, abfd) != info->size) | |
1801 | error (_("Dwarf Error: Can't read DWARF data from '%s'"), | |
1802 | bfd_get_filename (abfd)); | |
1803 | } | |
1804 | ||
9e0ac564 TT |
1805 | /* A helper function that returns the size of a section in a safe way. |
1806 | If you are positive that the section has been read before using the | |
1807 | size, then it is safe to refer to the dwarf2_section_info object's | |
1808 | "size" field directly. In other cases, you must call this | |
1809 | function, because for compressed sections the size field is not set | |
1810 | correctly until the section has been read. */ | |
1811 | ||
1812 | static bfd_size_type | |
1813 | dwarf2_section_size (struct objfile *objfile, | |
1814 | struct dwarf2_section_info *info) | |
1815 | { | |
1816 | if (!info->readin) | |
1817 | dwarf2_read_section (objfile, info); | |
1818 | return info->size; | |
1819 | } | |
1820 | ||
dce234bc | 1821 | /* Fill in SECTP, BUFP and SIZEP with section info, given OBJFILE and |
0963b4bd | 1822 | SECTION_NAME. */ |
af34e669 | 1823 | |
dce234bc | 1824 | void |
3017a003 TG |
1825 | dwarf2_get_section_info (struct objfile *objfile, |
1826 | enum dwarf2_section_enum sect, | |
dce234bc PP |
1827 | asection **sectp, gdb_byte **bufp, |
1828 | bfd_size_type *sizep) | |
1829 | { | |
1830 | struct dwarf2_per_objfile *data | |
1831 | = objfile_data (objfile, dwarf2_objfile_data_key); | |
1832 | struct dwarf2_section_info *info; | |
a3b2a86b TT |
1833 | |
1834 | /* We may see an objfile without any DWARF, in which case we just | |
1835 | return nothing. */ | |
1836 | if (data == NULL) | |
1837 | { | |
1838 | *sectp = NULL; | |
1839 | *bufp = NULL; | |
1840 | *sizep = 0; | |
1841 | return; | |
1842 | } | |
3017a003 TG |
1843 | switch (sect) |
1844 | { | |
1845 | case DWARF2_DEBUG_FRAME: | |
1846 | info = &data->frame; | |
1847 | break; | |
1848 | case DWARF2_EH_FRAME: | |
1849 | info = &data->eh_frame; | |
1850 | break; | |
1851 | default: | |
1852 | gdb_assert_not_reached ("unexpected section"); | |
1853 | } | |
dce234bc | 1854 | |
9e0ac564 | 1855 | dwarf2_read_section (objfile, info); |
dce234bc PP |
1856 | |
1857 | *sectp = info->asection; | |
1858 | *bufp = info->buffer; | |
1859 | *sizep = info->size; | |
1860 | } | |
1861 | ||
9291a0cd | 1862 | \f |
7b9f3c50 DE |
1863 | /* DWARF quick_symbols_functions support. */ |
1864 | ||
1865 | /* TUs can share .debug_line entries, and there can be a lot more TUs than | |
1866 | unique line tables, so we maintain a separate table of all .debug_line | |
1867 | derived entries to support the sharing. | |
1868 | All the quick functions need is the list of file names. We discard the | |
1869 | line_header when we're done and don't need to record it here. */ | |
1870 | struct quick_file_names | |
1871 | { | |
1872 | /* The offset in .debug_line of the line table. We hash on this. */ | |
1873 | unsigned int offset; | |
1874 | ||
1875 | /* The number of entries in file_names, real_names. */ | |
1876 | unsigned int num_file_names; | |
1877 | ||
1878 | /* The file names from the line table, after being run through | |
1879 | file_full_name. */ | |
1880 | const char **file_names; | |
1881 | ||
1882 | /* The file names from the line table after being run through | |
1883 | gdb_realpath. These are computed lazily. */ | |
1884 | const char **real_names; | |
1885 | }; | |
1886 | ||
1887 | /* When using the index (and thus not using psymtabs), each CU has an | |
1888 | object of this type. This is used to hold information needed by | |
1889 | the various "quick" methods. */ | |
1890 | struct dwarf2_per_cu_quick_data | |
1891 | { | |
1892 | /* The file table. This can be NULL if there was no file table | |
1893 | or it's currently not read in. | |
1894 | NOTE: This points into dwarf2_per_objfile->quick_file_names_table. */ | |
1895 | struct quick_file_names *file_names; | |
1896 | ||
1897 | /* The corresponding symbol table. This is NULL if symbols for this | |
1898 | CU have not yet been read. */ | |
1899 | struct symtab *symtab; | |
1900 | ||
1901 | /* A temporary mark bit used when iterating over all CUs in | |
1902 | expand_symtabs_matching. */ | |
1903 | unsigned int mark : 1; | |
1904 | ||
1905 | /* True if we've tried to read the file table and found there isn't one. | |
1906 | There will be no point in trying to read it again next time. */ | |
1907 | unsigned int no_file_data : 1; | |
1908 | }; | |
1909 | ||
1910 | /* Hash function for a quick_file_names. */ | |
1911 | ||
1912 | static hashval_t | |
1913 | hash_file_name_entry (const void *e) | |
1914 | { | |
1915 | const struct quick_file_names *file_data = e; | |
1916 | ||
1917 | return file_data->offset; | |
1918 | } | |
1919 | ||
1920 | /* Equality function for a quick_file_names. */ | |
1921 | ||
1922 | static int | |
1923 | eq_file_name_entry (const void *a, const void *b) | |
1924 | { | |
1925 | const struct quick_file_names *ea = a; | |
1926 | const struct quick_file_names *eb = b; | |
1927 | ||
1928 | return ea->offset == eb->offset; | |
1929 | } | |
1930 | ||
1931 | /* Delete function for a quick_file_names. */ | |
1932 | ||
1933 | static void | |
1934 | delete_file_name_entry (void *e) | |
1935 | { | |
1936 | struct quick_file_names *file_data = e; | |
1937 | int i; | |
1938 | ||
1939 | for (i = 0; i < file_data->num_file_names; ++i) | |
1940 | { | |
1941 | xfree ((void*) file_data->file_names[i]); | |
1942 | if (file_data->real_names) | |
1943 | xfree ((void*) file_data->real_names[i]); | |
1944 | } | |
1945 | ||
1946 | /* The space for the struct itself lives on objfile_obstack, | |
1947 | so we don't free it here. */ | |
1948 | } | |
1949 | ||
1950 | /* Create a quick_file_names hash table. */ | |
1951 | ||
1952 | static htab_t | |
1953 | create_quick_file_names_table (unsigned int nr_initial_entries) | |
1954 | { | |
1955 | return htab_create_alloc (nr_initial_entries, | |
1956 | hash_file_name_entry, eq_file_name_entry, | |
1957 | delete_file_name_entry, xcalloc, xfree); | |
1958 | } | |
9291a0cd | 1959 | |
918dd910 JK |
1960 | /* Read in PER_CU->CU. This function is unrelated to symtabs, symtab would |
1961 | have to be created afterwards. You should call age_cached_comp_units after | |
1962 | processing PER_CU->CU. dw2_setup must have been already called. */ | |
1963 | ||
1964 | static void | |
1965 | load_cu (struct dwarf2_per_cu_data *per_cu) | |
1966 | { | |
3019eac3 | 1967 | if (per_cu->is_debug_types) |
e5fe5e75 | 1968 | load_full_type_unit (per_cu); |
918dd910 | 1969 | else |
95554aad | 1970 | load_full_comp_unit (per_cu, language_minimal); |
918dd910 | 1971 | |
918dd910 | 1972 | gdb_assert (per_cu->cu != NULL); |
2dc860c0 DE |
1973 | |
1974 | dwarf2_find_base_address (per_cu->cu->dies, per_cu->cu); | |
918dd910 JK |
1975 | } |
1976 | ||
a0f42c21 | 1977 | /* Read in the symbols for PER_CU. */ |
2fdf6df6 | 1978 | |
9291a0cd | 1979 | static void |
a0f42c21 | 1980 | dw2_do_instantiate_symtab (struct dwarf2_per_cu_data *per_cu) |
9291a0cd TT |
1981 | { |
1982 | struct cleanup *back_to; | |
1983 | ||
1984 | back_to = make_cleanup (dwarf2_release_queue, NULL); | |
1985 | ||
95554aad TT |
1986 | if (dwarf2_per_objfile->using_index |
1987 | ? per_cu->v.quick->symtab == NULL | |
1988 | : (per_cu->v.psymtab == NULL || !per_cu->v.psymtab->readin)) | |
1989 | { | |
1990 | queue_comp_unit (per_cu, language_minimal); | |
1991 | load_cu (per_cu); | |
1992 | } | |
9291a0cd | 1993 | |
a0f42c21 | 1994 | process_queue (); |
9291a0cd TT |
1995 | |
1996 | /* Age the cache, releasing compilation units that have not | |
1997 | been used recently. */ | |
1998 | age_cached_comp_units (); | |
1999 | ||
2000 | do_cleanups (back_to); | |
2001 | } | |
2002 | ||
2003 | /* Ensure that the symbols for PER_CU have been read in. OBJFILE is | |
2004 | the objfile from which this CU came. Returns the resulting symbol | |
2005 | table. */ | |
2fdf6df6 | 2006 | |
9291a0cd | 2007 | static struct symtab * |
a0f42c21 | 2008 | dw2_instantiate_symtab (struct dwarf2_per_cu_data *per_cu) |
9291a0cd | 2009 | { |
95554aad | 2010 | gdb_assert (dwarf2_per_objfile->using_index); |
9291a0cd TT |
2011 | if (!per_cu->v.quick->symtab) |
2012 | { | |
2013 | struct cleanup *back_to = make_cleanup (free_cached_comp_units, NULL); | |
2014 | increment_reading_symtab (); | |
a0f42c21 | 2015 | dw2_do_instantiate_symtab (per_cu); |
95554aad | 2016 | process_cu_includes (); |
9291a0cd TT |
2017 | do_cleanups (back_to); |
2018 | } | |
2019 | return per_cu->v.quick->symtab; | |
2020 | } | |
2021 | ||
1fd400ff | 2022 | /* Return the CU given its index. */ |
2fdf6df6 | 2023 | |
1fd400ff TT |
2024 | static struct dwarf2_per_cu_data * |
2025 | dw2_get_cu (int index) | |
2026 | { | |
2027 | if (index >= dwarf2_per_objfile->n_comp_units) | |
2028 | { | |
2029 | index -= dwarf2_per_objfile->n_comp_units; | |
d467dd73 | 2030 | return dwarf2_per_objfile->all_type_units[index]; |
1fd400ff TT |
2031 | } |
2032 | return dwarf2_per_objfile->all_comp_units[index]; | |
2033 | } | |
2034 | ||
9291a0cd TT |
2035 | /* A helper function that knows how to read a 64-bit value in a way |
2036 | that doesn't make gdb die. Returns 1 if the conversion went ok, 0 | |
2037 | otherwise. */ | |
2fdf6df6 | 2038 | |
9291a0cd TT |
2039 | static int |
2040 | extract_cu_value (const char *bytes, ULONGEST *result) | |
2041 | { | |
2042 | if (sizeof (ULONGEST) < 8) | |
2043 | { | |
2044 | int i; | |
2045 | ||
2046 | /* Ignore the upper 4 bytes if they are all zero. */ | |
2047 | for (i = 0; i < 4; ++i) | |
2048 | if (bytes[i + 4] != 0) | |
2049 | return 0; | |
2050 | ||
2051 | *result = extract_unsigned_integer (bytes, 4, BFD_ENDIAN_LITTLE); | |
2052 | } | |
2053 | else | |
2054 | *result = extract_unsigned_integer (bytes, 8, BFD_ENDIAN_LITTLE); | |
2055 | return 1; | |
2056 | } | |
2057 | ||
2058 | /* Read the CU list from the mapped index, and use it to create all | |
2059 | the CU objects for this objfile. Return 0 if something went wrong, | |
2060 | 1 if everything went ok. */ | |
2fdf6df6 | 2061 | |
9291a0cd | 2062 | static int |
1fd400ff TT |
2063 | create_cus_from_index (struct objfile *objfile, const gdb_byte *cu_list, |
2064 | offset_type cu_list_elements) | |
9291a0cd TT |
2065 | { |
2066 | offset_type i; | |
9291a0cd TT |
2067 | |
2068 | dwarf2_per_objfile->n_comp_units = cu_list_elements / 2; | |
2069 | dwarf2_per_objfile->all_comp_units | |
2070 | = obstack_alloc (&objfile->objfile_obstack, | |
2071 | dwarf2_per_objfile->n_comp_units | |
2072 | * sizeof (struct dwarf2_per_cu_data *)); | |
2073 | ||
2074 | for (i = 0; i < cu_list_elements; i += 2) | |
2075 | { | |
2076 | struct dwarf2_per_cu_data *the_cu; | |
2077 | ULONGEST offset, length; | |
2078 | ||
2079 | if (!extract_cu_value (cu_list, &offset) | |
2080 | || !extract_cu_value (cu_list + 8, &length)) | |
2081 | return 0; | |
2082 | cu_list += 2 * 8; | |
2083 | ||
2084 | the_cu = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
2085 | struct dwarf2_per_cu_data); | |
b64f50a1 | 2086 | the_cu->offset.sect_off = offset; |
9291a0cd TT |
2087 | the_cu->length = length; |
2088 | the_cu->objfile = objfile; | |
3019eac3 | 2089 | the_cu->info_or_types_section = &dwarf2_per_objfile->info; |
9291a0cd TT |
2090 | the_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
2091 | struct dwarf2_per_cu_quick_data); | |
2092 | dwarf2_per_objfile->all_comp_units[i / 2] = the_cu; | |
2093 | } | |
2094 | ||
2095 | return 1; | |
2096 | } | |
2097 | ||
1fd400ff | 2098 | /* Create the signatured type hash table from the index. */ |
673bfd45 | 2099 | |
1fd400ff | 2100 | static int |
673bfd45 | 2101 | create_signatured_type_table_from_index (struct objfile *objfile, |
8b70b953 | 2102 | struct dwarf2_section_info *section, |
673bfd45 DE |
2103 | const gdb_byte *bytes, |
2104 | offset_type elements) | |
1fd400ff TT |
2105 | { |
2106 | offset_type i; | |
673bfd45 | 2107 | htab_t sig_types_hash; |
1fd400ff | 2108 | |
d467dd73 DE |
2109 | dwarf2_per_objfile->n_type_units = elements / 3; |
2110 | dwarf2_per_objfile->all_type_units | |
1fd400ff | 2111 | = obstack_alloc (&objfile->objfile_obstack, |
d467dd73 | 2112 | dwarf2_per_objfile->n_type_units |
1fd400ff TT |
2113 | * sizeof (struct dwarf2_per_cu_data *)); |
2114 | ||
673bfd45 | 2115 | sig_types_hash = allocate_signatured_type_table (objfile); |
1fd400ff TT |
2116 | |
2117 | for (i = 0; i < elements; i += 3) | |
2118 | { | |
52dc124a DE |
2119 | struct signatured_type *sig_type; |
2120 | ULONGEST offset, type_offset_in_tu, signature; | |
1fd400ff TT |
2121 | void **slot; |
2122 | ||
2123 | if (!extract_cu_value (bytes, &offset) | |
52dc124a | 2124 | || !extract_cu_value (bytes + 8, &type_offset_in_tu)) |
1fd400ff TT |
2125 | return 0; |
2126 | signature = extract_unsigned_integer (bytes + 16, 8, BFD_ENDIAN_LITTLE); | |
2127 | bytes += 3 * 8; | |
2128 | ||
52dc124a | 2129 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
1fd400ff | 2130 | struct signatured_type); |
52dc124a | 2131 | sig_type->signature = signature; |
3019eac3 DE |
2132 | sig_type->type_offset_in_tu.cu_off = type_offset_in_tu; |
2133 | sig_type->per_cu.is_debug_types = 1; | |
2134 | sig_type->per_cu.info_or_types_section = section; | |
52dc124a DE |
2135 | sig_type->per_cu.offset.sect_off = offset; |
2136 | sig_type->per_cu.objfile = objfile; | |
2137 | sig_type->per_cu.v.quick | |
1fd400ff TT |
2138 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
2139 | struct dwarf2_per_cu_quick_data); | |
2140 | ||
52dc124a DE |
2141 | slot = htab_find_slot (sig_types_hash, sig_type, INSERT); |
2142 | *slot = sig_type; | |
1fd400ff | 2143 | |
52dc124a | 2144 | dwarf2_per_objfile->all_type_units[i / 3] = &sig_type->per_cu; |
1fd400ff TT |
2145 | } |
2146 | ||
673bfd45 | 2147 | dwarf2_per_objfile->signatured_types = sig_types_hash; |
1fd400ff TT |
2148 | |
2149 | return 1; | |
2150 | } | |
2151 | ||
9291a0cd TT |
2152 | /* Read the address map data from the mapped index, and use it to |
2153 | populate the objfile's psymtabs_addrmap. */ | |
2fdf6df6 | 2154 | |
9291a0cd TT |
2155 | static void |
2156 | create_addrmap_from_index (struct objfile *objfile, struct mapped_index *index) | |
2157 | { | |
2158 | const gdb_byte *iter, *end; | |
2159 | struct obstack temp_obstack; | |
2160 | struct addrmap *mutable_map; | |
2161 | struct cleanup *cleanup; | |
2162 | CORE_ADDR baseaddr; | |
2163 | ||
2164 | obstack_init (&temp_obstack); | |
2165 | cleanup = make_cleanup_obstack_free (&temp_obstack); | |
2166 | mutable_map = addrmap_create_mutable (&temp_obstack); | |
2167 | ||
2168 | iter = index->address_table; | |
2169 | end = iter + index->address_table_size; | |
2170 | ||
2171 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
2172 | ||
2173 | while (iter < end) | |
2174 | { | |
2175 | ULONGEST hi, lo, cu_index; | |
2176 | lo = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
2177 | iter += 8; | |
2178 | hi = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
2179 | iter += 8; | |
2180 | cu_index = extract_unsigned_integer (iter, 4, BFD_ENDIAN_LITTLE); | |
2181 | iter += 4; | |
2182 | ||
2183 | addrmap_set_empty (mutable_map, lo + baseaddr, hi + baseaddr - 1, | |
1fd400ff | 2184 | dw2_get_cu (cu_index)); |
9291a0cd TT |
2185 | } |
2186 | ||
2187 | objfile->psymtabs_addrmap = addrmap_create_fixed (mutable_map, | |
2188 | &objfile->objfile_obstack); | |
2189 | do_cleanups (cleanup); | |
2190 | } | |
2191 | ||
59d7bcaf JK |
2192 | /* The hash function for strings in the mapped index. This is the same as |
2193 | SYMBOL_HASH_NEXT, but we keep a separate copy to maintain control over the | |
2194 | implementation. This is necessary because the hash function is tied to the | |
2195 | format of the mapped index file. The hash values do not have to match with | |
559a7a62 JK |
2196 | SYMBOL_HASH_NEXT. |
2197 | ||
2198 | Use INT_MAX for INDEX_VERSION if you generate the current index format. */ | |
2fdf6df6 | 2199 | |
9291a0cd | 2200 | static hashval_t |
559a7a62 | 2201 | mapped_index_string_hash (int index_version, const void *p) |
9291a0cd TT |
2202 | { |
2203 | const unsigned char *str = (const unsigned char *) p; | |
2204 | hashval_t r = 0; | |
2205 | unsigned char c; | |
2206 | ||
2207 | while ((c = *str++) != 0) | |
559a7a62 JK |
2208 | { |
2209 | if (index_version >= 5) | |
2210 | c = tolower (c); | |
2211 | r = r * 67 + c - 113; | |
2212 | } | |
9291a0cd TT |
2213 | |
2214 | return r; | |
2215 | } | |
2216 | ||
2217 | /* Find a slot in the mapped index INDEX for the object named NAME. | |
2218 | If NAME is found, set *VEC_OUT to point to the CU vector in the | |
2219 | constant pool and return 1. If NAME cannot be found, return 0. */ | |
2fdf6df6 | 2220 | |
9291a0cd TT |
2221 | static int |
2222 | find_slot_in_mapped_hash (struct mapped_index *index, const char *name, | |
2223 | offset_type **vec_out) | |
2224 | { | |
0cf03b49 JK |
2225 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
2226 | offset_type hash; | |
9291a0cd | 2227 | offset_type slot, step; |
559a7a62 | 2228 | int (*cmp) (const char *, const char *); |
9291a0cd | 2229 | |
0cf03b49 JK |
2230 | if (current_language->la_language == language_cplus |
2231 | || current_language->la_language == language_java | |
2232 | || current_language->la_language == language_fortran) | |
2233 | { | |
2234 | /* NAME is already canonical. Drop any qualifiers as .gdb_index does | |
2235 | not contain any. */ | |
2236 | const char *paren = strchr (name, '('); | |
2237 | ||
2238 | if (paren) | |
2239 | { | |
2240 | char *dup; | |
2241 | ||
2242 | dup = xmalloc (paren - name + 1); | |
2243 | memcpy (dup, name, paren - name); | |
2244 | dup[paren - name] = 0; | |
2245 | ||
2246 | make_cleanup (xfree, dup); | |
2247 | name = dup; | |
2248 | } | |
2249 | } | |
2250 | ||
559a7a62 | 2251 | /* Index version 4 did not support case insensitive searches. But the |
feea76c2 | 2252 | indices for case insensitive languages are built in lowercase, therefore |
559a7a62 JK |
2253 | simulate our NAME being searched is also lowercased. */ |
2254 | hash = mapped_index_string_hash ((index->version == 4 | |
2255 | && case_sensitivity == case_sensitive_off | |
2256 | ? 5 : index->version), | |
2257 | name); | |
2258 | ||
3876f04e DE |
2259 | slot = hash & (index->symbol_table_slots - 1); |
2260 | step = ((hash * 17) & (index->symbol_table_slots - 1)) | 1; | |
559a7a62 | 2261 | cmp = (case_sensitivity == case_sensitive_on ? strcmp : strcasecmp); |
9291a0cd TT |
2262 | |
2263 | for (;;) | |
2264 | { | |
2265 | /* Convert a slot number to an offset into the table. */ | |
2266 | offset_type i = 2 * slot; | |
2267 | const char *str; | |
3876f04e | 2268 | if (index->symbol_table[i] == 0 && index->symbol_table[i + 1] == 0) |
0cf03b49 JK |
2269 | { |
2270 | do_cleanups (back_to); | |
2271 | return 0; | |
2272 | } | |
9291a0cd | 2273 | |
3876f04e | 2274 | str = index->constant_pool + MAYBE_SWAP (index->symbol_table[i]); |
559a7a62 | 2275 | if (!cmp (name, str)) |
9291a0cd TT |
2276 | { |
2277 | *vec_out = (offset_type *) (index->constant_pool | |
3876f04e | 2278 | + MAYBE_SWAP (index->symbol_table[i + 1])); |
0cf03b49 | 2279 | do_cleanups (back_to); |
9291a0cd TT |
2280 | return 1; |
2281 | } | |
2282 | ||
3876f04e | 2283 | slot = (slot + step) & (index->symbol_table_slots - 1); |
9291a0cd TT |
2284 | } |
2285 | } | |
2286 | ||
2287 | /* Read the index file. If everything went ok, initialize the "quick" | |
2288 | elements of all the CUs and return 1. Otherwise, return 0. */ | |
2fdf6df6 | 2289 | |
9291a0cd TT |
2290 | static int |
2291 | dwarf2_read_index (struct objfile *objfile) | |
2292 | { | |
9291a0cd TT |
2293 | char *addr; |
2294 | struct mapped_index *map; | |
b3b272e1 | 2295 | offset_type *metadata; |
ac0b195c KW |
2296 | const gdb_byte *cu_list; |
2297 | const gdb_byte *types_list = NULL; | |
2298 | offset_type version, cu_list_elements; | |
2299 | offset_type types_list_elements = 0; | |
1fd400ff | 2300 | int i; |
9291a0cd | 2301 | |
9e0ac564 | 2302 | if (dwarf2_section_empty_p (&dwarf2_per_objfile->gdb_index)) |
9291a0cd | 2303 | return 0; |
82430852 JK |
2304 | |
2305 | /* Older elfutils strip versions could keep the section in the main | |
2306 | executable while splitting it for the separate debug info file. */ | |
2307 | if ((bfd_get_file_flags (dwarf2_per_objfile->gdb_index.asection) | |
2308 | & SEC_HAS_CONTENTS) == 0) | |
2309 | return 0; | |
2310 | ||
9291a0cd TT |
2311 | dwarf2_read_section (objfile, &dwarf2_per_objfile->gdb_index); |
2312 | ||
2313 | addr = dwarf2_per_objfile->gdb_index.buffer; | |
2314 | /* Version check. */ | |
1fd400ff | 2315 | version = MAYBE_SWAP (*(offset_type *) addr); |
987d643c | 2316 | /* Versions earlier than 3 emitted every copy of a psymbol. This |
a6e293d1 | 2317 | causes the index to behave very poorly for certain requests. Version 3 |
831adc1f | 2318 | contained incomplete addrmap. So, it seems better to just ignore such |
481860b3 | 2319 | indices. */ |
831adc1f | 2320 | if (version < 4) |
481860b3 GB |
2321 | { |
2322 | static int warning_printed = 0; | |
2323 | if (!warning_printed) | |
2324 | { | |
2325 | warning (_("Skipping obsolete .gdb_index section in %s."), | |
2326 | objfile->name); | |
2327 | warning_printed = 1; | |
2328 | } | |
2329 | return 0; | |
2330 | } | |
2331 | /* Index version 4 uses a different hash function than index version | |
2332 | 5 and later. | |
2333 | ||
2334 | Versions earlier than 6 did not emit psymbols for inlined | |
2335 | functions. Using these files will cause GDB not to be able to | |
2336 | set breakpoints on inlined functions by name, so we ignore these | |
2337 | indices unless the --use-deprecated-index-sections command line | |
2338 | option was supplied. */ | |
2339 | if (version < 6 && !use_deprecated_index_sections) | |
2340 | { | |
2341 | static int warning_printed = 0; | |
2342 | if (!warning_printed) | |
2343 | { | |
2344 | warning (_("Skipping deprecated .gdb_index section in %s, pass " | |
2345 | "--use-deprecated-index-sections to use them anyway"), | |
2346 | objfile->name); | |
2347 | warning_printed = 1; | |
2348 | } | |
2349 | return 0; | |
2350 | } | |
2351 | /* Indexes with higher version than the one supported by GDB may be no | |
594e8718 | 2352 | longer backward compatible. */ |
481860b3 | 2353 | if (version > 6) |
594e8718 | 2354 | return 0; |
9291a0cd TT |
2355 | |
2356 | map = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct mapped_index); | |
559a7a62 | 2357 | map->version = version; |
b3b272e1 | 2358 | map->total_size = dwarf2_per_objfile->gdb_index.size; |
9291a0cd TT |
2359 | |
2360 | metadata = (offset_type *) (addr + sizeof (offset_type)); | |
1fd400ff TT |
2361 | |
2362 | i = 0; | |
2363 | cu_list = addr + MAYBE_SWAP (metadata[i]); | |
2364 | cu_list_elements = ((MAYBE_SWAP (metadata[i + 1]) - MAYBE_SWAP (metadata[i])) | |
9291a0cd | 2365 | / 8); |
1fd400ff TT |
2366 | ++i; |
2367 | ||
987d643c TT |
2368 | types_list = addr + MAYBE_SWAP (metadata[i]); |
2369 | types_list_elements = ((MAYBE_SWAP (metadata[i + 1]) | |
2370 | - MAYBE_SWAP (metadata[i])) | |
2371 | / 8); | |
2372 | ++i; | |
1fd400ff TT |
2373 | |
2374 | map->address_table = addr + MAYBE_SWAP (metadata[i]); | |
2375 | map->address_table_size = (MAYBE_SWAP (metadata[i + 1]) | |
2376 | - MAYBE_SWAP (metadata[i])); | |
2377 | ++i; | |
2378 | ||
3876f04e DE |
2379 | map->symbol_table = (offset_type *) (addr + MAYBE_SWAP (metadata[i])); |
2380 | map->symbol_table_slots = ((MAYBE_SWAP (metadata[i + 1]) | |
2381 | - MAYBE_SWAP (metadata[i])) | |
2382 | / (2 * sizeof (offset_type))); | |
1fd400ff | 2383 | ++i; |
9291a0cd | 2384 | |
1fd400ff TT |
2385 | map->constant_pool = addr + MAYBE_SWAP (metadata[i]); |
2386 | ||
0fefef59 DE |
2387 | /* Don't use the index if it's empty. */ |
2388 | if (map->symbol_table_slots == 0) | |
2389 | return 0; | |
2390 | ||
1fd400ff TT |
2391 | if (!create_cus_from_index (objfile, cu_list, cu_list_elements)) |
2392 | return 0; | |
2393 | ||
8b70b953 TT |
2394 | if (types_list_elements) |
2395 | { | |
2396 | struct dwarf2_section_info *section; | |
2397 | ||
2398 | /* We can only handle a single .debug_types when we have an | |
2399 | index. */ | |
2400 | if (VEC_length (dwarf2_section_info_def, dwarf2_per_objfile->types) != 1) | |
2401 | return 0; | |
2402 | ||
2403 | section = VEC_index (dwarf2_section_info_def, | |
2404 | dwarf2_per_objfile->types, 0); | |
2405 | ||
2406 | if (!create_signatured_type_table_from_index (objfile, section, | |
2407 | types_list, | |
2408 | types_list_elements)) | |
2409 | return 0; | |
2410 | } | |
9291a0cd TT |
2411 | |
2412 | create_addrmap_from_index (objfile, map); | |
2413 | ||
2414 | dwarf2_per_objfile->index_table = map; | |
2415 | dwarf2_per_objfile->using_index = 1; | |
7b9f3c50 DE |
2416 | dwarf2_per_objfile->quick_file_names_table = |
2417 | create_quick_file_names_table (dwarf2_per_objfile->n_comp_units); | |
9291a0cd TT |
2418 | |
2419 | return 1; | |
2420 | } | |
2421 | ||
2422 | /* A helper for the "quick" functions which sets the global | |
2423 | dwarf2_per_objfile according to OBJFILE. */ | |
2fdf6df6 | 2424 | |
9291a0cd TT |
2425 | static void |
2426 | dw2_setup (struct objfile *objfile) | |
2427 | { | |
2428 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); | |
2429 | gdb_assert (dwarf2_per_objfile); | |
2430 | } | |
2431 | ||
dee91e82 | 2432 | /* die_reader_func for dw2_get_file_names. */ |
2fdf6df6 | 2433 | |
dee91e82 DE |
2434 | static void |
2435 | dw2_get_file_names_reader (const struct die_reader_specs *reader, | |
2436 | gdb_byte *info_ptr, | |
2437 | struct die_info *comp_unit_die, | |
2438 | int has_children, | |
2439 | void *data) | |
9291a0cd | 2440 | { |
dee91e82 DE |
2441 | struct dwarf2_cu *cu = reader->cu; |
2442 | struct dwarf2_per_cu_data *this_cu = cu->per_cu; | |
2443 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
7b9f3c50 | 2444 | struct line_header *lh; |
9291a0cd | 2445 | struct attribute *attr; |
dee91e82 | 2446 | int i; |
9291a0cd | 2447 | char *name, *comp_dir; |
7b9f3c50 DE |
2448 | void **slot; |
2449 | struct quick_file_names *qfn; | |
2450 | unsigned int line_offset; | |
9291a0cd | 2451 | |
07261596 TT |
2452 | /* Our callers never want to match partial units -- instead they |
2453 | will match the enclosing full CU. */ | |
2454 | if (comp_unit_die->tag == DW_TAG_partial_unit) | |
2455 | { | |
2456 | this_cu->v.quick->no_file_data = 1; | |
2457 | return; | |
2458 | } | |
2459 | ||
7b9f3c50 DE |
2460 | lh = NULL; |
2461 | slot = NULL; | |
2462 | line_offset = 0; | |
dee91e82 DE |
2463 | |
2464 | attr = dwarf2_attr (comp_unit_die, DW_AT_stmt_list, cu); | |
9291a0cd TT |
2465 | if (attr) |
2466 | { | |
7b9f3c50 DE |
2467 | struct quick_file_names find_entry; |
2468 | ||
2469 | line_offset = DW_UNSND (attr); | |
2470 | ||
2471 | /* We may have already read in this line header (TU line header sharing). | |
2472 | If we have we're done. */ | |
2473 | find_entry.offset = line_offset; | |
2474 | slot = htab_find_slot (dwarf2_per_objfile->quick_file_names_table, | |
2475 | &find_entry, INSERT); | |
2476 | if (*slot != NULL) | |
2477 | { | |
7b9f3c50 | 2478 | this_cu->v.quick->file_names = *slot; |
dee91e82 | 2479 | return; |
7b9f3c50 DE |
2480 | } |
2481 | ||
3019eac3 | 2482 | lh = dwarf_decode_line_header (line_offset, cu); |
9291a0cd TT |
2483 | } |
2484 | if (lh == NULL) | |
2485 | { | |
7b9f3c50 | 2486 | this_cu->v.quick->no_file_data = 1; |
dee91e82 | 2487 | return; |
9291a0cd TT |
2488 | } |
2489 | ||
7b9f3c50 DE |
2490 | qfn = obstack_alloc (&objfile->objfile_obstack, sizeof (*qfn)); |
2491 | qfn->offset = line_offset; | |
2492 | gdb_assert (slot != NULL); | |
2493 | *slot = qfn; | |
9291a0cd | 2494 | |
dee91e82 | 2495 | find_file_and_directory (comp_unit_die, cu, &name, &comp_dir); |
9291a0cd | 2496 | |
7b9f3c50 DE |
2497 | qfn->num_file_names = lh->num_file_names; |
2498 | qfn->file_names = obstack_alloc (&objfile->objfile_obstack, | |
2499 | lh->num_file_names * sizeof (char *)); | |
9291a0cd | 2500 | for (i = 0; i < lh->num_file_names; ++i) |
7b9f3c50 DE |
2501 | qfn->file_names[i] = file_full_name (i + 1, lh, comp_dir); |
2502 | qfn->real_names = NULL; | |
9291a0cd | 2503 | |
7b9f3c50 | 2504 | free_line_header (lh); |
7b9f3c50 DE |
2505 | |
2506 | this_cu->v.quick->file_names = qfn; | |
dee91e82 DE |
2507 | } |
2508 | ||
2509 | /* A helper for the "quick" functions which attempts to read the line | |
2510 | table for THIS_CU. */ | |
2511 | ||
2512 | static struct quick_file_names * | |
2513 | dw2_get_file_names (struct objfile *objfile, | |
2514 | struct dwarf2_per_cu_data *this_cu) | |
2515 | { | |
2516 | if (this_cu->v.quick->file_names != NULL) | |
2517 | return this_cu->v.quick->file_names; | |
2518 | /* If we know there is no line data, no point in looking again. */ | |
2519 | if (this_cu->v.quick->no_file_data) | |
2520 | return NULL; | |
2521 | ||
3019eac3 DE |
2522 | /* If DWO files are in use, we can still find the DW_AT_stmt_list attribute |
2523 | in the stub for CUs, there's is no need to lookup the DWO file. | |
2524 | However, that's not the case for TUs where DW_AT_stmt_list lives in the | |
2525 | DWO file. */ | |
2526 | if (this_cu->is_debug_types) | |
fd820528 | 2527 | init_cutu_and_read_dies (this_cu, 0, 0, dw2_get_file_names_reader, NULL); |
3019eac3 DE |
2528 | else |
2529 | init_cutu_and_read_dies_simple (this_cu, dw2_get_file_names_reader, NULL); | |
dee91e82 DE |
2530 | |
2531 | if (this_cu->v.quick->no_file_data) | |
2532 | return NULL; | |
2533 | return this_cu->v.quick->file_names; | |
9291a0cd TT |
2534 | } |
2535 | ||
2536 | /* A helper for the "quick" functions which computes and caches the | |
7b9f3c50 | 2537 | real path for a given file name from the line table. */ |
2fdf6df6 | 2538 | |
9291a0cd | 2539 | static const char * |
7b9f3c50 DE |
2540 | dw2_get_real_path (struct objfile *objfile, |
2541 | struct quick_file_names *qfn, int index) | |
9291a0cd | 2542 | { |
7b9f3c50 DE |
2543 | if (qfn->real_names == NULL) |
2544 | qfn->real_names = OBSTACK_CALLOC (&objfile->objfile_obstack, | |
2545 | qfn->num_file_names, sizeof (char *)); | |
9291a0cd | 2546 | |
7b9f3c50 DE |
2547 | if (qfn->real_names[index] == NULL) |
2548 | qfn->real_names[index] = gdb_realpath (qfn->file_names[index]); | |
9291a0cd | 2549 | |
7b9f3c50 | 2550 | return qfn->real_names[index]; |
9291a0cd TT |
2551 | } |
2552 | ||
2553 | static struct symtab * | |
2554 | dw2_find_last_source_symtab (struct objfile *objfile) | |
2555 | { | |
2556 | int index; | |
ae2de4f8 | 2557 | |
9291a0cd TT |
2558 | dw2_setup (objfile); |
2559 | index = dwarf2_per_objfile->n_comp_units - 1; | |
a0f42c21 | 2560 | return dw2_instantiate_symtab (dw2_get_cu (index)); |
9291a0cd TT |
2561 | } |
2562 | ||
7b9f3c50 DE |
2563 | /* Traversal function for dw2_forget_cached_source_info. */ |
2564 | ||
2565 | static int | |
2566 | dw2_free_cached_file_names (void **slot, void *info) | |
9291a0cd | 2567 | { |
7b9f3c50 | 2568 | struct quick_file_names *file_data = (struct quick_file_names *) *slot; |
9291a0cd | 2569 | |
7b9f3c50 | 2570 | if (file_data->real_names) |
9291a0cd | 2571 | { |
7b9f3c50 | 2572 | int i; |
9291a0cd | 2573 | |
7b9f3c50 | 2574 | for (i = 0; i < file_data->num_file_names; ++i) |
9291a0cd | 2575 | { |
7b9f3c50 DE |
2576 | xfree ((void*) file_data->real_names[i]); |
2577 | file_data->real_names[i] = NULL; | |
9291a0cd TT |
2578 | } |
2579 | } | |
7b9f3c50 DE |
2580 | |
2581 | return 1; | |
2582 | } | |
2583 | ||
2584 | static void | |
2585 | dw2_forget_cached_source_info (struct objfile *objfile) | |
2586 | { | |
2587 | dw2_setup (objfile); | |
2588 | ||
2589 | htab_traverse_noresize (dwarf2_per_objfile->quick_file_names_table, | |
2590 | dw2_free_cached_file_names, NULL); | |
9291a0cd TT |
2591 | } |
2592 | ||
f8eba3c6 TT |
2593 | /* Helper function for dw2_map_symtabs_matching_filename that expands |
2594 | the symtabs and calls the iterator. */ | |
2595 | ||
2596 | static int | |
2597 | dw2_map_expand_apply (struct objfile *objfile, | |
2598 | struct dwarf2_per_cu_data *per_cu, | |
2599 | const char *name, | |
2600 | const char *full_path, const char *real_path, | |
2601 | int (*callback) (struct symtab *, void *), | |
2602 | void *data) | |
2603 | { | |
2604 | struct symtab *last_made = objfile->symtabs; | |
2605 | ||
2606 | /* Don't visit already-expanded CUs. */ | |
2607 | if (per_cu->v.quick->symtab) | |
2608 | return 0; | |
2609 | ||
2610 | /* This may expand more than one symtab, and we want to iterate over | |
2611 | all of them. */ | |
a0f42c21 | 2612 | dw2_instantiate_symtab (per_cu); |
f8eba3c6 TT |
2613 | |
2614 | return iterate_over_some_symtabs (name, full_path, real_path, callback, data, | |
2615 | objfile->symtabs, last_made); | |
2616 | } | |
2617 | ||
2618 | /* Implementation of the map_symtabs_matching_filename method. */ | |
2619 | ||
9291a0cd | 2620 | static int |
f8eba3c6 TT |
2621 | dw2_map_symtabs_matching_filename (struct objfile *objfile, const char *name, |
2622 | const char *full_path, const char *real_path, | |
2623 | int (*callback) (struct symtab *, void *), | |
2624 | void *data) | |
9291a0cd TT |
2625 | { |
2626 | int i; | |
c011a4f4 | 2627 | const char *name_basename = lbasename (name); |
4aac40c8 TT |
2628 | int name_len = strlen (name); |
2629 | int is_abs = IS_ABSOLUTE_PATH (name); | |
9291a0cd TT |
2630 | |
2631 | dw2_setup (objfile); | |
ae2de4f8 | 2632 | |
1fd400ff | 2633 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units |
d467dd73 | 2634 | + dwarf2_per_objfile->n_type_units); ++i) |
9291a0cd TT |
2635 | { |
2636 | int j; | |
e254ef6a | 2637 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
7b9f3c50 | 2638 | struct quick_file_names *file_data; |
9291a0cd | 2639 | |
3d7bb9d9 | 2640 | /* We only need to look at symtabs not already expanded. */ |
e254ef6a | 2641 | if (per_cu->v.quick->symtab) |
9291a0cd TT |
2642 | continue; |
2643 | ||
7b9f3c50 DE |
2644 | file_data = dw2_get_file_names (objfile, per_cu); |
2645 | if (file_data == NULL) | |
9291a0cd TT |
2646 | continue; |
2647 | ||
7b9f3c50 | 2648 | for (j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 2649 | { |
7b9f3c50 | 2650 | const char *this_name = file_data->file_names[j]; |
9291a0cd | 2651 | |
4aac40c8 TT |
2652 | if (FILENAME_CMP (name, this_name) == 0 |
2653 | || (!is_abs && compare_filenames_for_search (this_name, | |
2654 | name, name_len))) | |
9291a0cd | 2655 | { |
f8eba3c6 TT |
2656 | if (dw2_map_expand_apply (objfile, per_cu, |
2657 | name, full_path, real_path, | |
2658 | callback, data)) | |
2659 | return 1; | |
4aac40c8 | 2660 | } |
9291a0cd | 2661 | |
c011a4f4 DE |
2662 | /* Before we invoke realpath, which can get expensive when many |
2663 | files are involved, do a quick comparison of the basenames. */ | |
2664 | if (! basenames_may_differ | |
2665 | && FILENAME_CMP (lbasename (this_name), name_basename) != 0) | |
2666 | continue; | |
2667 | ||
9291a0cd TT |
2668 | if (full_path != NULL) |
2669 | { | |
7b9f3c50 DE |
2670 | const char *this_real_name = dw2_get_real_path (objfile, |
2671 | file_data, j); | |
9291a0cd | 2672 | |
7b9f3c50 | 2673 | if (this_real_name != NULL |
4aac40c8 TT |
2674 | && (FILENAME_CMP (full_path, this_real_name) == 0 |
2675 | || (!is_abs | |
2676 | && compare_filenames_for_search (this_real_name, | |
2677 | name, name_len)))) | |
9291a0cd | 2678 | { |
f8eba3c6 TT |
2679 | if (dw2_map_expand_apply (objfile, per_cu, |
2680 | name, full_path, real_path, | |
2681 | callback, data)) | |
2682 | return 1; | |
9291a0cd TT |
2683 | } |
2684 | } | |
2685 | ||
2686 | if (real_path != NULL) | |
2687 | { | |
7b9f3c50 DE |
2688 | const char *this_real_name = dw2_get_real_path (objfile, |
2689 | file_data, j); | |
9291a0cd | 2690 | |
7b9f3c50 | 2691 | if (this_real_name != NULL |
4aac40c8 TT |
2692 | && (FILENAME_CMP (real_path, this_real_name) == 0 |
2693 | || (!is_abs | |
2694 | && compare_filenames_for_search (this_real_name, | |
2695 | name, name_len)))) | |
9291a0cd | 2696 | { |
f8eba3c6 TT |
2697 | if (dw2_map_expand_apply (objfile, per_cu, |
2698 | name, full_path, real_path, | |
2699 | callback, data)) | |
2700 | return 1; | |
9291a0cd TT |
2701 | } |
2702 | } | |
2703 | } | |
2704 | } | |
2705 | ||
9291a0cd TT |
2706 | return 0; |
2707 | } | |
2708 | ||
2709 | static struct symtab * | |
2710 | dw2_lookup_symbol (struct objfile *objfile, int block_index, | |
2711 | const char *name, domain_enum domain) | |
2712 | { | |
774b6a14 | 2713 | /* We do all the work in the pre_expand_symtabs_matching hook |
9291a0cd TT |
2714 | instead. */ |
2715 | return NULL; | |
2716 | } | |
2717 | ||
2718 | /* A helper function that expands all symtabs that hold an object | |
2719 | named NAME. */ | |
2fdf6df6 | 2720 | |
9291a0cd TT |
2721 | static void |
2722 | dw2_do_expand_symtabs_matching (struct objfile *objfile, const char *name) | |
2723 | { | |
2724 | dw2_setup (objfile); | |
2725 | ||
ae2de4f8 | 2726 | /* index_table is NULL if OBJF_READNOW. */ |
9291a0cd TT |
2727 | if (dwarf2_per_objfile->index_table) |
2728 | { | |
2729 | offset_type *vec; | |
2730 | ||
2731 | if (find_slot_in_mapped_hash (dwarf2_per_objfile->index_table, | |
2732 | name, &vec)) | |
2733 | { | |
2734 | offset_type i, len = MAYBE_SWAP (*vec); | |
2735 | for (i = 0; i < len; ++i) | |
2736 | { | |
2737 | offset_type cu_index = MAYBE_SWAP (vec[i + 1]); | |
e254ef6a | 2738 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (cu_index); |
1fd400ff | 2739 | |
a0f42c21 | 2740 | dw2_instantiate_symtab (per_cu); |
9291a0cd TT |
2741 | } |
2742 | } | |
2743 | } | |
2744 | } | |
2745 | ||
774b6a14 TT |
2746 | static void |
2747 | dw2_pre_expand_symtabs_matching (struct objfile *objfile, | |
8903c50d | 2748 | enum block_enum block_kind, const char *name, |
774b6a14 | 2749 | domain_enum domain) |
9291a0cd | 2750 | { |
774b6a14 | 2751 | dw2_do_expand_symtabs_matching (objfile, name); |
9291a0cd TT |
2752 | } |
2753 | ||
2754 | static void | |
2755 | dw2_print_stats (struct objfile *objfile) | |
2756 | { | |
2757 | int i, count; | |
2758 | ||
2759 | dw2_setup (objfile); | |
2760 | count = 0; | |
1fd400ff | 2761 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units |
d467dd73 | 2762 | + dwarf2_per_objfile->n_type_units); ++i) |
9291a0cd | 2763 | { |
e254ef6a | 2764 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
9291a0cd | 2765 | |
e254ef6a | 2766 | if (!per_cu->v.quick->symtab) |
9291a0cd TT |
2767 | ++count; |
2768 | } | |
2769 | printf_filtered (_(" Number of unread CUs: %d\n"), count); | |
2770 | } | |
2771 | ||
2772 | static void | |
2773 | dw2_dump (struct objfile *objfile) | |
2774 | { | |
2775 | /* Nothing worth printing. */ | |
2776 | } | |
2777 | ||
2778 | static void | |
2779 | dw2_relocate (struct objfile *objfile, struct section_offsets *new_offsets, | |
2780 | struct section_offsets *delta) | |
2781 | { | |
2782 | /* There's nothing to relocate here. */ | |
2783 | } | |
2784 | ||
2785 | static void | |
2786 | dw2_expand_symtabs_for_function (struct objfile *objfile, | |
2787 | const char *func_name) | |
2788 | { | |
2789 | dw2_do_expand_symtabs_matching (objfile, func_name); | |
2790 | } | |
2791 | ||
2792 | static void | |
2793 | dw2_expand_all_symtabs (struct objfile *objfile) | |
2794 | { | |
2795 | int i; | |
2796 | ||
2797 | dw2_setup (objfile); | |
1fd400ff TT |
2798 | |
2799 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units | |
d467dd73 | 2800 | + dwarf2_per_objfile->n_type_units); ++i) |
9291a0cd | 2801 | { |
e254ef6a | 2802 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
9291a0cd | 2803 | |
a0f42c21 | 2804 | dw2_instantiate_symtab (per_cu); |
9291a0cd TT |
2805 | } |
2806 | } | |
2807 | ||
2808 | static void | |
2809 | dw2_expand_symtabs_with_filename (struct objfile *objfile, | |
2810 | const char *filename) | |
2811 | { | |
2812 | int i; | |
2813 | ||
2814 | dw2_setup (objfile); | |
d4637a04 DE |
2815 | |
2816 | /* We don't need to consider type units here. | |
2817 | This is only called for examining code, e.g. expand_line_sal. | |
2818 | There can be an order of magnitude (or more) more type units | |
2819 | than comp units, and we avoid them if we can. */ | |
2820 | ||
2821 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) | |
9291a0cd TT |
2822 | { |
2823 | int j; | |
e254ef6a | 2824 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
7b9f3c50 | 2825 | struct quick_file_names *file_data; |
9291a0cd | 2826 | |
3d7bb9d9 | 2827 | /* We only need to look at symtabs not already expanded. */ |
e254ef6a | 2828 | if (per_cu->v.quick->symtab) |
9291a0cd TT |
2829 | continue; |
2830 | ||
7b9f3c50 DE |
2831 | file_data = dw2_get_file_names (objfile, per_cu); |
2832 | if (file_data == NULL) | |
9291a0cd TT |
2833 | continue; |
2834 | ||
7b9f3c50 | 2835 | for (j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 2836 | { |
7b9f3c50 | 2837 | const char *this_name = file_data->file_names[j]; |
1ef75ecc | 2838 | if (FILENAME_CMP (this_name, filename) == 0) |
9291a0cd | 2839 | { |
a0f42c21 | 2840 | dw2_instantiate_symtab (per_cu); |
9291a0cd TT |
2841 | break; |
2842 | } | |
2843 | } | |
2844 | } | |
2845 | } | |
2846 | ||
356d9f9d TT |
2847 | /* A helper function for dw2_find_symbol_file that finds the primary |
2848 | file name for a given CU. This is a die_reader_func. */ | |
2849 | ||
2850 | static void | |
2851 | dw2_get_primary_filename_reader (const struct die_reader_specs *reader, | |
2852 | gdb_byte *info_ptr, | |
2853 | struct die_info *comp_unit_die, | |
2854 | int has_children, | |
2855 | void *data) | |
2856 | { | |
2857 | const char **result_ptr = data; | |
2858 | struct dwarf2_cu *cu = reader->cu; | |
2859 | struct attribute *attr; | |
2860 | ||
2861 | attr = dwarf2_attr (comp_unit_die, DW_AT_name, cu); | |
2862 | if (attr == NULL) | |
2863 | *result_ptr = NULL; | |
2864 | else | |
2865 | *result_ptr = DW_STRING (attr); | |
2866 | } | |
2867 | ||
dd786858 | 2868 | static const char * |
9291a0cd TT |
2869 | dw2_find_symbol_file (struct objfile *objfile, const char *name) |
2870 | { | |
e254ef6a | 2871 | struct dwarf2_per_cu_data *per_cu; |
9291a0cd | 2872 | offset_type *vec; |
7b9f3c50 | 2873 | struct quick_file_names *file_data; |
356d9f9d | 2874 | const char *filename; |
9291a0cd TT |
2875 | |
2876 | dw2_setup (objfile); | |
2877 | ||
ae2de4f8 | 2878 | /* index_table is NULL if OBJF_READNOW. */ |
9291a0cd | 2879 | if (!dwarf2_per_objfile->index_table) |
96408a79 SA |
2880 | { |
2881 | struct symtab *s; | |
2882 | ||
d790cf0a DE |
2883 | ALL_OBJFILE_PRIMARY_SYMTABS (objfile, s) |
2884 | { | |
2885 | struct blockvector *bv = BLOCKVECTOR (s); | |
2886 | const struct block *block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); | |
2887 | struct symbol *sym = lookup_block_symbol (block, name, VAR_DOMAIN); | |
2888 | ||
2889 | if (sym) | |
2890 | return sym->symtab->filename; | |
2891 | } | |
96408a79 SA |
2892 | return NULL; |
2893 | } | |
9291a0cd TT |
2894 | |
2895 | if (!find_slot_in_mapped_hash (dwarf2_per_objfile->index_table, | |
2896 | name, &vec)) | |
2897 | return NULL; | |
2898 | ||
2899 | /* Note that this just looks at the very first one named NAME -- but | |
2900 | actually we are looking for a function. find_main_filename | |
2901 | should be rewritten so that it doesn't require a custom hook. It | |
2902 | could just use the ordinary symbol tables. */ | |
2903 | /* vec[0] is the length, which must always be >0. */ | |
e254ef6a | 2904 | per_cu = dw2_get_cu (MAYBE_SWAP (vec[1])); |
9291a0cd | 2905 | |
356d9f9d TT |
2906 | if (per_cu->v.quick->symtab != NULL) |
2907 | return per_cu->v.quick->symtab->filename; | |
2908 | ||
2909 | if (per_cu->is_debug_types) | |
2910 | init_cutu_and_read_dies (per_cu, 0, 0, dw2_get_primary_filename_reader, | |
2911 | &filename); | |
2912 | else | |
2913 | init_cutu_and_read_dies_simple (per_cu, dw2_get_primary_filename_reader, | |
2914 | &filename); | |
9291a0cd | 2915 | |
356d9f9d | 2916 | return filename; |
9291a0cd TT |
2917 | } |
2918 | ||
2919 | static void | |
40658b94 PH |
2920 | dw2_map_matching_symbols (const char * name, domain_enum namespace, |
2921 | struct objfile *objfile, int global, | |
2922 | int (*callback) (struct block *, | |
2923 | struct symbol *, void *), | |
2edb89d3 JK |
2924 | void *data, symbol_compare_ftype *match, |
2925 | symbol_compare_ftype *ordered_compare) | |
9291a0cd | 2926 | { |
40658b94 | 2927 | /* Currently unimplemented; used for Ada. The function can be called if the |
a9e6a4bb JK |
2928 | current language is Ada for a non-Ada objfile using GNU index. As Ada |
2929 | does not look for non-Ada symbols this function should just return. */ | |
9291a0cd TT |
2930 | } |
2931 | ||
2932 | static void | |
f8eba3c6 TT |
2933 | dw2_expand_symtabs_matching |
2934 | (struct objfile *objfile, | |
2935 | int (*file_matcher) (const char *, void *), | |
e078317b | 2936 | int (*name_matcher) (const char *, void *), |
f8eba3c6 TT |
2937 | enum search_domain kind, |
2938 | void *data) | |
9291a0cd TT |
2939 | { |
2940 | int i; | |
2941 | offset_type iter; | |
4b5246aa | 2942 | struct mapped_index *index; |
9291a0cd TT |
2943 | |
2944 | dw2_setup (objfile); | |
ae2de4f8 DE |
2945 | |
2946 | /* index_table is NULL if OBJF_READNOW. */ | |
9291a0cd TT |
2947 | if (!dwarf2_per_objfile->index_table) |
2948 | return; | |
4b5246aa | 2949 | index = dwarf2_per_objfile->index_table; |
9291a0cd | 2950 | |
7b08b9eb | 2951 | if (file_matcher != NULL) |
24c79950 TT |
2952 | { |
2953 | struct cleanup *cleanup; | |
2954 | htab_t visited_found, visited_not_found; | |
2955 | ||
2956 | visited_found = htab_create_alloc (10, | |
2957 | htab_hash_pointer, htab_eq_pointer, | |
2958 | NULL, xcalloc, xfree); | |
2959 | cleanup = make_cleanup_htab_delete (visited_found); | |
2960 | visited_not_found = htab_create_alloc (10, | |
2961 | htab_hash_pointer, htab_eq_pointer, | |
2962 | NULL, xcalloc, xfree); | |
2963 | make_cleanup_htab_delete (visited_not_found); | |
2964 | ||
2965 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units | |
2966 | + dwarf2_per_objfile->n_type_units); ++i) | |
2967 | { | |
2968 | int j; | |
2969 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); | |
2970 | struct quick_file_names *file_data; | |
2971 | void **slot; | |
7b08b9eb | 2972 | |
24c79950 | 2973 | per_cu->v.quick->mark = 0; |
3d7bb9d9 | 2974 | |
24c79950 TT |
2975 | /* We only need to look at symtabs not already expanded. */ |
2976 | if (per_cu->v.quick->symtab) | |
2977 | continue; | |
7b08b9eb | 2978 | |
24c79950 TT |
2979 | file_data = dw2_get_file_names (objfile, per_cu); |
2980 | if (file_data == NULL) | |
2981 | continue; | |
7b08b9eb | 2982 | |
24c79950 TT |
2983 | if (htab_find (visited_not_found, file_data) != NULL) |
2984 | continue; | |
2985 | else if (htab_find (visited_found, file_data) != NULL) | |
2986 | { | |
2987 | per_cu->v.quick->mark = 1; | |
2988 | continue; | |
2989 | } | |
2990 | ||
2991 | for (j = 0; j < file_data->num_file_names; ++j) | |
2992 | { | |
2993 | if (file_matcher (file_data->file_names[j], data)) | |
2994 | { | |
2995 | per_cu->v.quick->mark = 1; | |
2996 | break; | |
2997 | } | |
2998 | } | |
2999 | ||
3000 | slot = htab_find_slot (per_cu->v.quick->mark | |
3001 | ? visited_found | |
3002 | : visited_not_found, | |
3003 | file_data, INSERT); | |
3004 | *slot = file_data; | |
3005 | } | |
3006 | ||
3007 | do_cleanups (cleanup); | |
3008 | } | |
9291a0cd | 3009 | |
3876f04e | 3010 | for (iter = 0; iter < index->symbol_table_slots; ++iter) |
9291a0cd TT |
3011 | { |
3012 | offset_type idx = 2 * iter; | |
3013 | const char *name; | |
3014 | offset_type *vec, vec_len, vec_idx; | |
3015 | ||
3876f04e | 3016 | if (index->symbol_table[idx] == 0 && index->symbol_table[idx + 1] == 0) |
9291a0cd TT |
3017 | continue; |
3018 | ||
3876f04e | 3019 | name = index->constant_pool + MAYBE_SWAP (index->symbol_table[idx]); |
9291a0cd | 3020 | |
e078317b | 3021 | if (! (*name_matcher) (name, data)) |
9291a0cd TT |
3022 | continue; |
3023 | ||
3024 | /* The name was matched, now expand corresponding CUs that were | |
3025 | marked. */ | |
4b5246aa | 3026 | vec = (offset_type *) (index->constant_pool |
3876f04e | 3027 | + MAYBE_SWAP (index->symbol_table[idx + 1])); |
9291a0cd TT |
3028 | vec_len = MAYBE_SWAP (vec[0]); |
3029 | for (vec_idx = 0; vec_idx < vec_len; ++vec_idx) | |
3030 | { | |
e254ef6a | 3031 | struct dwarf2_per_cu_data *per_cu; |
1fd400ff | 3032 | |
e254ef6a | 3033 | per_cu = dw2_get_cu (MAYBE_SWAP (vec[vec_idx + 1])); |
7b08b9eb | 3034 | if (file_matcher == NULL || per_cu->v.quick->mark) |
a0f42c21 | 3035 | dw2_instantiate_symtab (per_cu); |
9291a0cd TT |
3036 | } |
3037 | } | |
3038 | } | |
3039 | ||
9703b513 TT |
3040 | /* A helper for dw2_find_pc_sect_symtab which finds the most specific |
3041 | symtab. */ | |
3042 | ||
3043 | static struct symtab * | |
3044 | recursively_find_pc_sect_symtab (struct symtab *symtab, CORE_ADDR pc) | |
3045 | { | |
3046 | int i; | |
3047 | ||
3048 | if (BLOCKVECTOR (symtab) != NULL | |
3049 | && blockvector_contains_pc (BLOCKVECTOR (symtab), pc)) | |
3050 | return symtab; | |
3051 | ||
a3ec0bb1 DE |
3052 | if (symtab->includes == NULL) |
3053 | return NULL; | |
3054 | ||
9703b513 TT |
3055 | for (i = 0; symtab->includes[i]; ++i) |
3056 | { | |
a3ec0bb1 | 3057 | struct symtab *s = symtab->includes[i]; |
9703b513 TT |
3058 | |
3059 | s = recursively_find_pc_sect_symtab (s, pc); | |
3060 | if (s != NULL) | |
3061 | return s; | |
3062 | } | |
3063 | ||
3064 | return NULL; | |
3065 | } | |
3066 | ||
9291a0cd TT |
3067 | static struct symtab * |
3068 | dw2_find_pc_sect_symtab (struct objfile *objfile, | |
3069 | struct minimal_symbol *msymbol, | |
3070 | CORE_ADDR pc, | |
3071 | struct obj_section *section, | |
3072 | int warn_if_readin) | |
3073 | { | |
3074 | struct dwarf2_per_cu_data *data; | |
9703b513 | 3075 | struct symtab *result; |
9291a0cd TT |
3076 | |
3077 | dw2_setup (objfile); | |
3078 | ||
3079 | if (!objfile->psymtabs_addrmap) | |
3080 | return NULL; | |
3081 | ||
3082 | data = addrmap_find (objfile->psymtabs_addrmap, pc); | |
3083 | if (!data) | |
3084 | return NULL; | |
3085 | ||
3086 | if (warn_if_readin && data->v.quick->symtab) | |
abebb8b0 | 3087 | warning (_("(Internal error: pc %s in read in CU, but not in symtab.)"), |
9291a0cd TT |
3088 | paddress (get_objfile_arch (objfile), pc)); |
3089 | ||
9703b513 TT |
3090 | result = recursively_find_pc_sect_symtab (dw2_instantiate_symtab (data), pc); |
3091 | gdb_assert (result != NULL); | |
3092 | return result; | |
9291a0cd TT |
3093 | } |
3094 | ||
9291a0cd | 3095 | static void |
44b13c5a | 3096 | dw2_map_symbol_filenames (struct objfile *objfile, symbol_filename_ftype *fun, |
74e2f255 | 3097 | void *data, int need_fullname) |
9291a0cd TT |
3098 | { |
3099 | int i; | |
24c79950 TT |
3100 | struct cleanup *cleanup; |
3101 | htab_t visited = htab_create_alloc (10, htab_hash_pointer, htab_eq_pointer, | |
3102 | NULL, xcalloc, xfree); | |
9291a0cd | 3103 | |
24c79950 | 3104 | cleanup = make_cleanup_htab_delete (visited); |
9291a0cd | 3105 | dw2_setup (objfile); |
ae2de4f8 | 3106 | |
24c79950 TT |
3107 | /* We can ignore file names coming from already-expanded CUs. */ |
3108 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units | |
3109 | + dwarf2_per_objfile->n_type_units); ++i) | |
3110 | { | |
3111 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); | |
3112 | ||
3113 | if (per_cu->v.quick->symtab) | |
3114 | { | |
3115 | void **slot = htab_find_slot (visited, per_cu->v.quick->file_names, | |
3116 | INSERT); | |
3117 | ||
3118 | *slot = per_cu->v.quick->file_names; | |
3119 | } | |
3120 | } | |
3121 | ||
1fd400ff | 3122 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units |
d467dd73 | 3123 | + dwarf2_per_objfile->n_type_units); ++i) |
9291a0cd TT |
3124 | { |
3125 | int j; | |
e254ef6a | 3126 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
7b9f3c50 | 3127 | struct quick_file_names *file_data; |
24c79950 | 3128 | void **slot; |
9291a0cd | 3129 | |
3d7bb9d9 | 3130 | /* We only need to look at symtabs not already expanded. */ |
e254ef6a | 3131 | if (per_cu->v.quick->symtab) |
9291a0cd TT |
3132 | continue; |
3133 | ||
7b9f3c50 DE |
3134 | file_data = dw2_get_file_names (objfile, per_cu); |
3135 | if (file_data == NULL) | |
9291a0cd TT |
3136 | continue; |
3137 | ||
24c79950 TT |
3138 | slot = htab_find_slot (visited, file_data, INSERT); |
3139 | if (*slot) | |
3140 | { | |
3141 | /* Already visited. */ | |
3142 | continue; | |
3143 | } | |
3144 | *slot = file_data; | |
3145 | ||
7b9f3c50 | 3146 | for (j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 3147 | { |
74e2f255 DE |
3148 | const char *this_real_name; |
3149 | ||
3150 | if (need_fullname) | |
3151 | this_real_name = dw2_get_real_path (objfile, file_data, j); | |
3152 | else | |
3153 | this_real_name = NULL; | |
7b9f3c50 | 3154 | (*fun) (file_data->file_names[j], this_real_name, data); |
9291a0cd TT |
3155 | } |
3156 | } | |
24c79950 TT |
3157 | |
3158 | do_cleanups (cleanup); | |
9291a0cd TT |
3159 | } |
3160 | ||
3161 | static int | |
3162 | dw2_has_symbols (struct objfile *objfile) | |
3163 | { | |
3164 | return 1; | |
3165 | } | |
3166 | ||
3167 | const struct quick_symbol_functions dwarf2_gdb_index_functions = | |
3168 | { | |
3169 | dw2_has_symbols, | |
3170 | dw2_find_last_source_symtab, | |
3171 | dw2_forget_cached_source_info, | |
f8eba3c6 | 3172 | dw2_map_symtabs_matching_filename, |
9291a0cd | 3173 | dw2_lookup_symbol, |
774b6a14 | 3174 | dw2_pre_expand_symtabs_matching, |
9291a0cd TT |
3175 | dw2_print_stats, |
3176 | dw2_dump, | |
3177 | dw2_relocate, | |
3178 | dw2_expand_symtabs_for_function, | |
3179 | dw2_expand_all_symtabs, | |
3180 | dw2_expand_symtabs_with_filename, | |
3181 | dw2_find_symbol_file, | |
40658b94 | 3182 | dw2_map_matching_symbols, |
9291a0cd TT |
3183 | dw2_expand_symtabs_matching, |
3184 | dw2_find_pc_sect_symtab, | |
9291a0cd TT |
3185 | dw2_map_symbol_filenames |
3186 | }; | |
3187 | ||
3188 | /* Initialize for reading DWARF for this objfile. Return 0 if this | |
3189 | file will use psymtabs, or 1 if using the GNU index. */ | |
3190 | ||
3191 | int | |
3192 | dwarf2_initialize_objfile (struct objfile *objfile) | |
3193 | { | |
3194 | /* If we're about to read full symbols, don't bother with the | |
3195 | indices. In this case we also don't care if some other debug | |
3196 | format is making psymtabs, because they are all about to be | |
3197 | expanded anyway. */ | |
3198 | if ((objfile->flags & OBJF_READNOW)) | |
3199 | { | |
3200 | int i; | |
3201 | ||
3202 | dwarf2_per_objfile->using_index = 1; | |
3203 | create_all_comp_units (objfile); | |
0e50663e | 3204 | create_all_type_units (objfile); |
7b9f3c50 DE |
3205 | dwarf2_per_objfile->quick_file_names_table = |
3206 | create_quick_file_names_table (dwarf2_per_objfile->n_comp_units); | |
9291a0cd | 3207 | |
1fd400ff | 3208 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units |
d467dd73 | 3209 | + dwarf2_per_objfile->n_type_units); ++i) |
9291a0cd | 3210 | { |
e254ef6a | 3211 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
9291a0cd | 3212 | |
e254ef6a DE |
3213 | per_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
3214 | struct dwarf2_per_cu_quick_data); | |
9291a0cd TT |
3215 | } |
3216 | ||
3217 | /* Return 1 so that gdb sees the "quick" functions. However, | |
3218 | these functions will be no-ops because we will have expanded | |
3219 | all symtabs. */ | |
3220 | return 1; | |
3221 | } | |
3222 | ||
3223 | if (dwarf2_read_index (objfile)) | |
3224 | return 1; | |
3225 | ||
9291a0cd TT |
3226 | return 0; |
3227 | } | |
3228 | ||
3229 | \f | |
3230 | ||
dce234bc PP |
3231 | /* Build a partial symbol table. */ |
3232 | ||
3233 | void | |
f29dff0a | 3234 | dwarf2_build_psymtabs (struct objfile *objfile) |
dce234bc | 3235 | { |
f29dff0a | 3236 | if (objfile->global_psymbols.size == 0 && objfile->static_psymbols.size == 0) |
c906108c SS |
3237 | { |
3238 | init_psymbol_list (objfile, 1024); | |
3239 | } | |
3240 | ||
d146bf1e | 3241 | dwarf2_build_psymtabs_hard (objfile); |
c906108c | 3242 | } |
c906108c | 3243 | |
45452591 DE |
3244 | /* Return TRUE if OFFSET is within CU_HEADER. */ |
3245 | ||
3246 | static inline int | |
b64f50a1 | 3247 | offset_in_cu_p (const struct comp_unit_head *cu_header, sect_offset offset) |
45452591 | 3248 | { |
b64f50a1 JK |
3249 | sect_offset bottom = { cu_header->offset.sect_off }; |
3250 | sect_offset top = { (cu_header->offset.sect_off + cu_header->length | |
3251 | + cu_header->initial_length_size) }; | |
9a619af0 | 3252 | |
b64f50a1 | 3253 | return (offset.sect_off >= bottom.sect_off && offset.sect_off < top.sect_off); |
45452591 DE |
3254 | } |
3255 | ||
93311388 DE |
3256 | /* Read in the comp unit header information from the debug_info at info_ptr. |
3257 | NOTE: This leaves members offset, first_die_offset to be filled in | |
3258 | by the caller. */ | |
107d2387 | 3259 | |
fe1b8b76 | 3260 | static gdb_byte * |
107d2387 | 3261 | read_comp_unit_head (struct comp_unit_head *cu_header, |
fe1b8b76 | 3262 | gdb_byte *info_ptr, bfd *abfd) |
107d2387 AC |
3263 | { |
3264 | int signed_addr; | |
891d2f0b | 3265 | unsigned int bytes_read; |
c764a876 DE |
3266 | |
3267 | cu_header->length = read_initial_length (abfd, info_ptr, &bytes_read); | |
3268 | cu_header->initial_length_size = bytes_read; | |
3269 | cu_header->offset_size = (bytes_read == 4) ? 4 : 8; | |
613e1657 | 3270 | info_ptr += bytes_read; |
107d2387 AC |
3271 | cu_header->version = read_2_bytes (abfd, info_ptr); |
3272 | info_ptr += 2; | |
b64f50a1 JK |
3273 | cu_header->abbrev_offset.sect_off = read_offset (abfd, info_ptr, cu_header, |
3274 | &bytes_read); | |
613e1657 | 3275 | info_ptr += bytes_read; |
107d2387 AC |
3276 | cu_header->addr_size = read_1_byte (abfd, info_ptr); |
3277 | info_ptr += 1; | |
3278 | signed_addr = bfd_get_sign_extend_vma (abfd); | |
3279 | if (signed_addr < 0) | |
8e65ff28 | 3280 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 3281 | _("read_comp_unit_head: dwarf from non elf file")); |
107d2387 | 3282 | cu_header->signed_addr_p = signed_addr; |
c764a876 | 3283 | |
107d2387 AC |
3284 | return info_ptr; |
3285 | } | |
3286 | ||
9ff913ba DE |
3287 | /* Subroutine of read_and_check_comp_unit_head and |
3288 | read_and_check_type_unit_head to simplify them. | |
3289 | Perform various error checking on the header. */ | |
3290 | ||
3291 | static void | |
3292 | error_check_comp_unit_head (struct comp_unit_head *header, | |
3293 | struct dwarf2_section_info *section) | |
3294 | { | |
3295 | bfd *abfd = section->asection->owner; | |
3296 | const char *filename = bfd_get_filename (abfd); | |
3297 | ||
3298 | if (header->version != 2 && header->version != 3 && header->version != 4) | |
3299 | error (_("Dwarf Error: wrong version in compilation unit header " | |
3300 | "(is %d, should be 2, 3, or 4) [in module %s]"), header->version, | |
3301 | filename); | |
3302 | ||
b64f50a1 | 3303 | if (header->abbrev_offset.sect_off |
9ff913ba DE |
3304 | >= dwarf2_section_size (dwarf2_per_objfile->objfile, |
3305 | &dwarf2_per_objfile->abbrev)) | |
3306 | error (_("Dwarf Error: bad offset (0x%lx) in compilation unit header " | |
3307 | "(offset 0x%lx + 6) [in module %s]"), | |
b64f50a1 | 3308 | (long) header->abbrev_offset.sect_off, (long) header->offset.sect_off, |
9ff913ba DE |
3309 | filename); |
3310 | ||
3311 | /* Cast to unsigned long to use 64-bit arithmetic when possible to | |
3312 | avoid potential 32-bit overflow. */ | |
b64f50a1 | 3313 | if (((unsigned long) header->offset.sect_off |
9ff913ba DE |
3314 | + header->length + header->initial_length_size) |
3315 | > section->size) | |
3316 | error (_("Dwarf Error: bad length (0x%lx) in compilation unit header " | |
3317 | "(offset 0x%lx + 0) [in module %s]"), | |
b64f50a1 | 3318 | (long) header->length, (long) header->offset.sect_off, |
9ff913ba DE |
3319 | filename); |
3320 | } | |
3321 | ||
3322 | /* Read in a CU/TU header and perform some basic error checking. | |
3323 | The contents of the header are stored in HEADER. | |
3324 | The result is a pointer to the start of the first DIE. */ | |
adabb602 | 3325 | |
fe1b8b76 | 3326 | static gdb_byte * |
9ff913ba DE |
3327 | read_and_check_comp_unit_head (struct comp_unit_head *header, |
3328 | struct dwarf2_section_info *section, | |
3329 | gdb_byte *info_ptr, | |
3330 | int is_debug_types_section) | |
72bf9492 | 3331 | { |
fe1b8b76 | 3332 | gdb_byte *beg_of_comp_unit = info_ptr; |
9ff913ba | 3333 | bfd *abfd = section->asection->owner; |
72bf9492 | 3334 | |
b64f50a1 | 3335 | header->offset.sect_off = beg_of_comp_unit - section->buffer; |
adabb602 | 3336 | |
72bf9492 DJ |
3337 | info_ptr = read_comp_unit_head (header, info_ptr, abfd); |
3338 | ||
460c1c54 CC |
3339 | /* If we're reading a type unit, skip over the signature and |
3340 | type_offset fields. */ | |
b0df02fd | 3341 | if (is_debug_types_section) |
460c1c54 CC |
3342 | info_ptr += 8 /*signature*/ + header->offset_size; |
3343 | ||
b64f50a1 | 3344 | header->first_die_offset.cu_off = info_ptr - beg_of_comp_unit; |
adabb602 | 3345 | |
9ff913ba | 3346 | error_check_comp_unit_head (header, section); |
72bf9492 DJ |
3347 | |
3348 | return info_ptr; | |
3349 | } | |
3350 | ||
348e048f DE |
3351 | /* Read in the types comp unit header information from .debug_types entry at |
3352 | types_ptr. The result is a pointer to one past the end of the header. */ | |
3353 | ||
3354 | static gdb_byte * | |
9ff913ba DE |
3355 | read_and_check_type_unit_head (struct comp_unit_head *header, |
3356 | struct dwarf2_section_info *section, | |
3357 | gdb_byte *info_ptr, | |
dee91e82 DE |
3358 | ULONGEST *signature, |
3359 | cu_offset *type_offset_in_tu) | |
348e048f | 3360 | { |
9ff913ba DE |
3361 | gdb_byte *beg_of_comp_unit = info_ptr; |
3362 | bfd *abfd = section->asection->owner; | |
348e048f | 3363 | |
b64f50a1 | 3364 | header->offset.sect_off = beg_of_comp_unit - section->buffer; |
348e048f | 3365 | |
9ff913ba | 3366 | info_ptr = read_comp_unit_head (header, info_ptr, abfd); |
348e048f | 3367 | |
9ff913ba DE |
3368 | /* If we're reading a type unit, skip over the signature and |
3369 | type_offset fields. */ | |
3370 | if (signature != NULL) | |
3371 | *signature = read_8_bytes (abfd, info_ptr); | |
3372 | info_ptr += 8; | |
dee91e82 DE |
3373 | if (type_offset_in_tu != NULL) |
3374 | type_offset_in_tu->cu_off = read_offset_1 (abfd, info_ptr, | |
3375 | header->offset_size); | |
9ff913ba DE |
3376 | info_ptr += header->offset_size; |
3377 | ||
b64f50a1 | 3378 | header->first_die_offset.cu_off = info_ptr - beg_of_comp_unit; |
348e048f | 3379 | |
9ff913ba DE |
3380 | error_check_comp_unit_head (header, section); |
3381 | ||
3382 | return info_ptr; | |
348e048f DE |
3383 | } |
3384 | ||
aaa75496 JB |
3385 | /* Allocate a new partial symtab for file named NAME and mark this new |
3386 | partial symtab as being an include of PST. */ | |
3387 | ||
3388 | static void | |
3389 | dwarf2_create_include_psymtab (char *name, struct partial_symtab *pst, | |
3390 | struct objfile *objfile) | |
3391 | { | |
3392 | struct partial_symtab *subpst = allocate_psymtab (name, objfile); | |
3393 | ||
3394 | subpst->section_offsets = pst->section_offsets; | |
3395 | subpst->textlow = 0; | |
3396 | subpst->texthigh = 0; | |
3397 | ||
3398 | subpst->dependencies = (struct partial_symtab **) | |
3399 | obstack_alloc (&objfile->objfile_obstack, | |
3400 | sizeof (struct partial_symtab *)); | |
3401 | subpst->dependencies[0] = pst; | |
3402 | subpst->number_of_dependencies = 1; | |
3403 | ||
3404 | subpst->globals_offset = 0; | |
3405 | subpst->n_global_syms = 0; | |
3406 | subpst->statics_offset = 0; | |
3407 | subpst->n_static_syms = 0; | |
3408 | subpst->symtab = NULL; | |
3409 | subpst->read_symtab = pst->read_symtab; | |
3410 | subpst->readin = 0; | |
3411 | ||
3412 | /* No private part is necessary for include psymtabs. This property | |
3413 | can be used to differentiate between such include psymtabs and | |
10b3939b | 3414 | the regular ones. */ |
58a9656e | 3415 | subpst->read_symtab_private = NULL; |
aaa75496 JB |
3416 | } |
3417 | ||
3418 | /* Read the Line Number Program data and extract the list of files | |
3419 | included by the source file represented by PST. Build an include | |
d85a05f0 | 3420 | partial symtab for each of these included files. */ |
aaa75496 JB |
3421 | |
3422 | static void | |
3423 | dwarf2_build_include_psymtabs (struct dwarf2_cu *cu, | |
dee91e82 DE |
3424 | struct die_info *die, |
3425 | struct partial_symtab *pst) | |
aaa75496 | 3426 | { |
d85a05f0 DJ |
3427 | struct line_header *lh = NULL; |
3428 | struct attribute *attr; | |
aaa75496 | 3429 | |
d85a05f0 DJ |
3430 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
3431 | if (attr) | |
3019eac3 | 3432 | lh = dwarf_decode_line_header (DW_UNSND (attr), cu); |
aaa75496 JB |
3433 | if (lh == NULL) |
3434 | return; /* No linetable, so no includes. */ | |
3435 | ||
c6da4cef | 3436 | /* NOTE: pst->dirname is DW_AT_comp_dir (if present). */ |
f3f5162e | 3437 | dwarf_decode_lines (lh, pst->dirname, cu, pst, 1); |
aaa75496 JB |
3438 | |
3439 | free_line_header (lh); | |
3440 | } | |
3441 | ||
348e048f | 3442 | static hashval_t |
52dc124a | 3443 | hash_signatured_type (const void *item) |
348e048f | 3444 | { |
52dc124a | 3445 | const struct signatured_type *sig_type = item; |
9a619af0 | 3446 | |
348e048f | 3447 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
52dc124a | 3448 | return sig_type->signature; |
348e048f DE |
3449 | } |
3450 | ||
3451 | static int | |
52dc124a | 3452 | eq_signatured_type (const void *item_lhs, const void *item_rhs) |
348e048f DE |
3453 | { |
3454 | const struct signatured_type *lhs = item_lhs; | |
3455 | const struct signatured_type *rhs = item_rhs; | |
9a619af0 | 3456 | |
348e048f DE |
3457 | return lhs->signature == rhs->signature; |
3458 | } | |
3459 | ||
1fd400ff TT |
3460 | /* Allocate a hash table for signatured types. */ |
3461 | ||
3462 | static htab_t | |
673bfd45 | 3463 | allocate_signatured_type_table (struct objfile *objfile) |
1fd400ff TT |
3464 | { |
3465 | return htab_create_alloc_ex (41, | |
52dc124a DE |
3466 | hash_signatured_type, |
3467 | eq_signatured_type, | |
1fd400ff TT |
3468 | NULL, |
3469 | &objfile->objfile_obstack, | |
3470 | hashtab_obstack_allocate, | |
3471 | dummy_obstack_deallocate); | |
3472 | } | |
3473 | ||
d467dd73 | 3474 | /* A helper function to add a signatured type CU to a table. */ |
1fd400ff TT |
3475 | |
3476 | static int | |
d467dd73 | 3477 | add_signatured_type_cu_to_table (void **slot, void *datum) |
1fd400ff TT |
3478 | { |
3479 | struct signatured_type *sigt = *slot; | |
3480 | struct dwarf2_per_cu_data ***datap = datum; | |
3481 | ||
3482 | **datap = &sigt->per_cu; | |
3483 | ++*datap; | |
3484 | ||
3485 | return 1; | |
3486 | } | |
3487 | ||
3019eac3 DE |
3488 | /* Create the hash table of all entries in the .debug_types section. |
3489 | DWO_FILE is a pointer to the DWO file for .debug_types.dwo, NULL otherwise. | |
3490 | The result is a pointer to the hash table or NULL if there are | |
3491 | no types. */ | |
348e048f | 3492 | |
3019eac3 DE |
3493 | static htab_t |
3494 | create_debug_types_hash_table (struct dwo_file *dwo_file, | |
3495 | VEC (dwarf2_section_info_def) *types) | |
348e048f | 3496 | { |
3019eac3 | 3497 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8b70b953 | 3498 | htab_t types_htab = NULL; |
8b70b953 TT |
3499 | int ix; |
3500 | struct dwarf2_section_info *section; | |
348e048f | 3501 | |
3019eac3 DE |
3502 | if (VEC_empty (dwarf2_section_info_def, types)) |
3503 | return NULL; | |
348e048f | 3504 | |
8b70b953 | 3505 | for (ix = 0; |
3019eac3 | 3506 | VEC_iterate (dwarf2_section_info_def, types, ix, section); |
8b70b953 TT |
3507 | ++ix) |
3508 | { | |
3019eac3 | 3509 | bfd *abfd; |
8b70b953 | 3510 | gdb_byte *info_ptr, *end_ptr; |
348e048f | 3511 | |
8b70b953 TT |
3512 | dwarf2_read_section (objfile, section); |
3513 | info_ptr = section->buffer; | |
348e048f | 3514 | |
8b70b953 TT |
3515 | if (info_ptr == NULL) |
3516 | continue; | |
348e048f | 3517 | |
3019eac3 DE |
3518 | /* We can't set abfd until now because the section may be empty or |
3519 | not present, in which case section->asection will be NULL. */ | |
3520 | abfd = section->asection->owner; | |
3521 | ||
8b70b953 | 3522 | if (types_htab == NULL) |
3019eac3 DE |
3523 | { |
3524 | if (dwo_file) | |
3525 | types_htab = allocate_dwo_unit_table (objfile); | |
3526 | else | |
3527 | types_htab = allocate_signatured_type_table (objfile); | |
3528 | } | |
348e048f | 3529 | |
8b70b953 | 3530 | if (dwarf2_die_debug) |
dee91e82 DE |
3531 | fprintf_unfiltered (gdb_stdlog, "Reading signatured types for %s:\n", |
3532 | bfd_get_filename (abfd)); | |
3533 | ||
3534 | /* We don't use init_cutu_and_read_dies_simple, or some such, here | |
3535 | because we don't need to read any dies: the signature is in the | |
3536 | header. */ | |
8b70b953 TT |
3537 | |
3538 | end_ptr = info_ptr + section->size; | |
3539 | while (info_ptr < end_ptr) | |
3540 | { | |
b64f50a1 | 3541 | sect_offset offset; |
3019eac3 | 3542 | cu_offset type_offset_in_tu; |
8b70b953 | 3543 | ULONGEST signature; |
52dc124a | 3544 | struct signatured_type *sig_type; |
3019eac3 | 3545 | struct dwo_unit *dwo_tu; |
8b70b953 TT |
3546 | void **slot; |
3547 | gdb_byte *ptr = info_ptr; | |
9ff913ba | 3548 | struct comp_unit_head header; |
dee91e82 | 3549 | unsigned int length; |
348e048f | 3550 | |
b64f50a1 | 3551 | offset.sect_off = ptr - section->buffer; |
348e048f | 3552 | |
8b70b953 | 3553 | /* We need to read the type's signature in order to build the hash |
9ff913ba | 3554 | table, but we don't need anything else just yet. */ |
348e048f | 3555 | |
9ff913ba | 3556 | ptr = read_and_check_type_unit_head (&header, section, ptr, |
3019eac3 | 3557 | &signature, &type_offset_in_tu); |
6caca83c | 3558 | |
dee91e82 DE |
3559 | length = header.initial_length_size + header.length; |
3560 | ||
6caca83c | 3561 | /* Skip dummy type units. */ |
dee91e82 DE |
3562 | if (ptr >= info_ptr + length |
3563 | || peek_abbrev_code (abfd, ptr) == 0) | |
6caca83c | 3564 | { |
dee91e82 | 3565 | info_ptr += header.initial_length_size + header.length; |
6caca83c CC |
3566 | continue; |
3567 | } | |
8b70b953 | 3568 | |
3019eac3 DE |
3569 | if (dwo_file) |
3570 | { | |
3571 | sig_type = NULL; | |
3572 | dwo_tu = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
3573 | struct dwo_unit); | |
3574 | dwo_tu->dwo_file = dwo_file; | |
3575 | dwo_tu->signature = signature; | |
3576 | dwo_tu->type_offset_in_tu = type_offset_in_tu; | |
3577 | dwo_tu->info_or_types_section = section; | |
3578 | dwo_tu->offset = offset; | |
3579 | dwo_tu->length = length; | |
3580 | } | |
3581 | else | |
3582 | { | |
3583 | /* N.B.: type_offset is not usable if this type uses a DWO file. | |
3584 | The real type_offset is in the DWO file. */ | |
3585 | dwo_tu = NULL; | |
3586 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
3587 | struct signatured_type); | |
3588 | sig_type->signature = signature; | |
3589 | sig_type->type_offset_in_tu = type_offset_in_tu; | |
3590 | sig_type->per_cu.objfile = objfile; | |
3591 | sig_type->per_cu.is_debug_types = 1; | |
3592 | sig_type->per_cu.info_or_types_section = section; | |
3593 | sig_type->per_cu.offset = offset; | |
3594 | sig_type->per_cu.length = length; | |
3595 | } | |
8b70b953 | 3596 | |
3019eac3 DE |
3597 | slot = htab_find_slot (types_htab, |
3598 | dwo_file ? (void*) dwo_tu : (void *) sig_type, | |
3599 | INSERT); | |
8b70b953 TT |
3600 | gdb_assert (slot != NULL); |
3601 | if (*slot != NULL) | |
3602 | { | |
3019eac3 DE |
3603 | sect_offset dup_offset; |
3604 | ||
3605 | if (dwo_file) | |
3606 | { | |
3607 | const struct dwo_unit *dup_tu = *slot; | |
3608 | ||
3609 | dup_offset = dup_tu->offset; | |
3610 | } | |
3611 | else | |
3612 | { | |
3613 | const struct signatured_type *dup_tu = *slot; | |
3614 | ||
3615 | dup_offset = dup_tu->per_cu.offset; | |
3616 | } | |
b3c8eb43 | 3617 | |
8b70b953 TT |
3618 | complaint (&symfile_complaints, |
3619 | _("debug type entry at offset 0x%x is duplicate to the " | |
3620 | "entry at offset 0x%x, signature 0x%s"), | |
3019eac3 | 3621 | offset.sect_off, dup_offset.sect_off, |
8b70b953 | 3622 | phex (signature, sizeof (signature))); |
8b70b953 | 3623 | } |
3019eac3 | 3624 | *slot = dwo_file ? (void *) dwo_tu : (void *) sig_type; |
348e048f | 3625 | |
8b70b953 TT |
3626 | if (dwarf2_die_debug) |
3627 | fprintf_unfiltered (gdb_stdlog, " offset 0x%x, signature 0x%s\n", | |
b64f50a1 JK |
3628 | offset.sect_off, |
3629 | phex (signature, sizeof (signature))); | |
348e048f | 3630 | |
dee91e82 | 3631 | info_ptr += length; |
8b70b953 | 3632 | } |
348e048f DE |
3633 | } |
3634 | ||
3019eac3 DE |
3635 | return types_htab; |
3636 | } | |
3637 | ||
3638 | /* Create the hash table of all entries in the .debug_types section, | |
3639 | and initialize all_type_units. | |
3640 | The result is zero if there is an error (e.g. missing .debug_types section), | |
3641 | otherwise non-zero. */ | |
3642 | ||
3643 | static int | |
3644 | create_all_type_units (struct objfile *objfile) | |
3645 | { | |
3646 | htab_t types_htab; | |
3647 | struct dwarf2_per_cu_data **iter; | |
3648 | ||
3649 | types_htab = create_debug_types_hash_table (NULL, dwarf2_per_objfile->types); | |
3650 | if (types_htab == NULL) | |
3651 | { | |
3652 | dwarf2_per_objfile->signatured_types = NULL; | |
3653 | return 0; | |
3654 | } | |
3655 | ||
348e048f DE |
3656 | dwarf2_per_objfile->signatured_types = types_htab; |
3657 | ||
d467dd73 DE |
3658 | dwarf2_per_objfile->n_type_units = htab_elements (types_htab); |
3659 | dwarf2_per_objfile->all_type_units | |
1fd400ff | 3660 | = obstack_alloc (&objfile->objfile_obstack, |
d467dd73 | 3661 | dwarf2_per_objfile->n_type_units |
1fd400ff | 3662 | * sizeof (struct dwarf2_per_cu_data *)); |
d467dd73 DE |
3663 | iter = &dwarf2_per_objfile->all_type_units[0]; |
3664 | htab_traverse_noresize (types_htab, add_signatured_type_cu_to_table, &iter); | |
3665 | gdb_assert (iter - &dwarf2_per_objfile->all_type_units[0] | |
3666 | == dwarf2_per_objfile->n_type_units); | |
1fd400ff | 3667 | |
348e048f DE |
3668 | return 1; |
3669 | } | |
3670 | ||
380bca97 | 3671 | /* Lookup a signature based type for DW_FORM_ref_sig8. |
e319fa28 | 3672 | Returns NULL if signature SIG is not present in the table. */ |
348e048f DE |
3673 | |
3674 | static struct signatured_type * | |
e319fa28 | 3675 | lookup_signatured_type (ULONGEST sig) |
348e048f DE |
3676 | { |
3677 | struct signatured_type find_entry, *entry; | |
3678 | ||
3679 | if (dwarf2_per_objfile->signatured_types == NULL) | |
3680 | { | |
3681 | complaint (&symfile_complaints, | |
55f1336d | 3682 | _("missing `.debug_types' section for DW_FORM_ref_sig8 die")); |
dcc07052 | 3683 | return NULL; |
348e048f DE |
3684 | } |
3685 | ||
3686 | find_entry.signature = sig; | |
3687 | entry = htab_find (dwarf2_per_objfile->signatured_types, &find_entry); | |
3688 | return entry; | |
3689 | } | |
3690 | ||
d85a05f0 DJ |
3691 | /* Initialize a die_reader_specs struct from a dwarf2_cu struct. */ |
3692 | ||
3693 | static void | |
3694 | init_cu_die_reader (struct die_reader_specs *reader, | |
dee91e82 | 3695 | struct dwarf2_cu *cu, |
3019eac3 DE |
3696 | struct dwarf2_section_info *section, |
3697 | struct dwo_file *dwo_file) | |
d85a05f0 | 3698 | { |
fceca515 | 3699 | gdb_assert (section->readin && section->buffer != NULL); |
dee91e82 | 3700 | reader->abfd = section->asection->owner; |
d85a05f0 | 3701 | reader->cu = cu; |
3019eac3 | 3702 | reader->dwo_file = dwo_file; |
dee91e82 DE |
3703 | reader->die_section = section; |
3704 | reader->buffer = section->buffer; | |
f664829e | 3705 | reader->buffer_end = section->buffer + section->size; |
d85a05f0 DJ |
3706 | } |
3707 | ||
3708 | /* Find the base address of the compilation unit for range lists and | |
3709 | location lists. It will normally be specified by DW_AT_low_pc. | |
3710 | In DWARF-3 draft 4, the base address could be overridden by | |
3711 | DW_AT_entry_pc. It's been removed, but GCC still uses this for | |
3712 | compilation units with discontinuous ranges. */ | |
3713 | ||
3714 | static void | |
3715 | dwarf2_find_base_address (struct die_info *die, struct dwarf2_cu *cu) | |
3716 | { | |
3717 | struct attribute *attr; | |
3718 | ||
3719 | cu->base_known = 0; | |
3720 | cu->base_address = 0; | |
3721 | ||
3722 | attr = dwarf2_attr (die, DW_AT_entry_pc, cu); | |
3723 | if (attr) | |
3724 | { | |
3725 | cu->base_address = DW_ADDR (attr); | |
3726 | cu->base_known = 1; | |
3727 | } | |
3728 | else | |
3729 | { | |
3730 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
3731 | if (attr) | |
3732 | { | |
3733 | cu->base_address = DW_ADDR (attr); | |
3734 | cu->base_known = 1; | |
3735 | } | |
3736 | } | |
3737 | } | |
3738 | ||
fd820528 | 3739 | /* Initialize a CU (or TU) and read its DIEs. |
3019eac3 | 3740 | If the CU defers to a DWO file, read the DWO file as well. |
dee91e82 DE |
3741 | |
3742 | If USE_EXISTING_CU is non-zero, and THIS_CU->cu is non-NULL, then use it. | |
3743 | Otherwise, a new CU is allocated with xmalloc. | |
3744 | ||
3745 | If KEEP is non-zero, then if we allocated a dwarf2_cu we add it to | |
3746 | read_in_chain. Otherwise the dwarf2_cu data is freed at the end. | |
3747 | ||
3748 | WARNING: If THIS_CU is a "dummy CU" (used as filler by the incremental | |
fd820528 | 3749 | linker) then DIE_READER_FUNC will not get called. */ |
aaa75496 | 3750 | |
70221824 | 3751 | static void |
fd820528 DE |
3752 | init_cutu_and_read_dies (struct dwarf2_per_cu_data *this_cu, |
3753 | int use_existing_cu, int keep, | |
3754 | die_reader_func_ftype *die_reader_func, | |
3755 | void *data) | |
c906108c | 3756 | { |
dee91e82 | 3757 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3019eac3 DE |
3758 | struct dwarf2_section_info *section = this_cu->info_or_types_section; |
3759 | bfd *abfd = section->asection->owner; | |
dee91e82 DE |
3760 | struct dwarf2_cu *cu; |
3761 | gdb_byte *begin_info_ptr, *info_ptr; | |
3762 | struct die_reader_specs reader; | |
d85a05f0 | 3763 | struct die_info *comp_unit_die; |
dee91e82 | 3764 | int has_children; |
d85a05f0 | 3765 | struct attribute *attr; |
dee91e82 DE |
3766 | struct cleanup *cleanups, *free_cu_cleanup = NULL; |
3767 | struct signatured_type *sig_type = NULL; | |
c906108c | 3768 | |
dee91e82 DE |
3769 | if (use_existing_cu) |
3770 | gdb_assert (keep); | |
23745b47 | 3771 | |
dee91e82 DE |
3772 | cleanups = make_cleanup (null_cleanup, NULL); |
3773 | ||
3774 | /* This is cheap if the section is already read in. */ | |
3775 | dwarf2_read_section (objfile, section); | |
3776 | ||
3777 | begin_info_ptr = info_ptr = section->buffer + this_cu->offset.sect_off; | |
3778 | ||
3779 | if (use_existing_cu && this_cu->cu != NULL) | |
3780 | { | |
3781 | cu = this_cu->cu; | |
3782 | info_ptr += cu->header.first_die_offset.cu_off; | |
3783 | } | |
3784 | else | |
3785 | { | |
3786 | /* If !use_existing_cu, this_cu->cu must be NULL. */ | |
3787 | gdb_assert (this_cu->cu == NULL); | |
3788 | ||
3789 | cu = xmalloc (sizeof (*cu)); | |
3790 | init_one_comp_unit (cu, this_cu); | |
3791 | ||
3792 | /* If an error occurs while loading, release our storage. */ | |
3793 | free_cu_cleanup = make_cleanup (free_heap_comp_unit, cu); | |
3794 | ||
3019eac3 | 3795 | if (this_cu->is_debug_types) |
dee91e82 DE |
3796 | { |
3797 | ULONGEST signature; | |
3798 | ||
3799 | info_ptr = read_and_check_type_unit_head (&cu->header, | |
3800 | section, info_ptr, | |
3801 | &signature, NULL); | |
3802 | ||
3803 | /* There's no way to get from PER_CU to its containing | |
3804 | struct signatured_type. | |
3805 | But we have the signature so we can use that. */ | |
3806 | sig_type = lookup_signatured_type (signature); | |
3807 | /* We've already scanned all the signatured types, | |
3808 | this must succeed. */ | |
3809 | gdb_assert (sig_type != NULL); | |
3810 | gdb_assert (&sig_type->per_cu == this_cu); | |
3811 | gdb_assert (this_cu->offset.sect_off == cu->header.offset.sect_off); | |
3812 | ||
3813 | /* LENGTH has not been set yet for type units. */ | |
3814 | this_cu->length = cu->header.length + cu->header.initial_length_size; | |
3019eac3 DE |
3815 | |
3816 | /* Establish the type offset that can be used to lookup the type. */ | |
3817 | sig_type->type_offset_in_section.sect_off = | |
3818 | this_cu->offset.sect_off + sig_type->type_offset_in_tu.cu_off; | |
dee91e82 DE |
3819 | } |
3820 | else | |
3821 | { | |
3822 | info_ptr = read_and_check_comp_unit_head (&cu->header, | |
3823 | section, info_ptr, 0); | |
3824 | ||
3825 | gdb_assert (this_cu->offset.sect_off == cu->header.offset.sect_off); | |
3826 | gdb_assert (this_cu->length | |
3827 | == cu->header.length + cu->header.initial_length_size); | |
3828 | } | |
3829 | } | |
10b3939b | 3830 | |
6caca83c | 3831 | /* Skip dummy compilation units. */ |
dee91e82 | 3832 | if (info_ptr >= begin_info_ptr + this_cu->length |
6caca83c CC |
3833 | || peek_abbrev_code (abfd, info_ptr) == 0) |
3834 | { | |
dee91e82 | 3835 | do_cleanups (cleanups); |
21b2bd31 | 3836 | return; |
6caca83c CC |
3837 | } |
3838 | ||
93311388 | 3839 | /* Read the abbrevs for this compilation unit into a table. */ |
dee91e82 DE |
3840 | if (cu->dwarf2_abbrevs == NULL) |
3841 | { | |
3842 | dwarf2_read_abbrevs (cu, &dwarf2_per_objfile->abbrev); | |
3843 | make_cleanup (dwarf2_free_abbrev_table, cu); | |
3844 | } | |
af703f96 | 3845 | |
dee91e82 | 3846 | /* Read the top level CU/TU die. */ |
3019eac3 | 3847 | init_cu_die_reader (&reader, cu, section, NULL); |
dee91e82 | 3848 | info_ptr = read_full_die (&reader, &comp_unit_die, info_ptr, &has_children); |
93311388 | 3849 | |
3019eac3 DE |
3850 | /* If we have a DWO stub, process it and then read in the DWO file. |
3851 | Note that if USE_EXISTING_OK != 0, and THIS_CU->cu already contains | |
3852 | a DWO CU, that this test will fail. */ | |
3853 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_name, cu); | |
3854 | if (attr) | |
3855 | { | |
3856 | char *dwo_name = DW_STRING (attr); | |
3857 | const char *comp_dir; | |
3858 | struct dwo_unit *dwo_unit; | |
3859 | ULONGEST signature; /* Or dwo_id. */ | |
3860 | struct attribute *stmt_list, *low_pc, *high_pc, *ranges; | |
3861 | int i,num_extra_attrs; | |
3862 | ||
3863 | if (has_children) | |
3864 | error (_("Dwarf Error: compilation unit with DW_AT_GNU_dwo_name" | |
3865 | " has children (offset 0x%x) [in module %s]"), | |
3866 | this_cu->offset.sect_off, bfd_get_filename (abfd)); | |
3867 | ||
3868 | /* These attributes aren't processed until later: | |
3869 | DW_AT_stmt_list, DW_AT_low_pc, DW_AT_high_pc, DW_AT_ranges. | |
3870 | However, the attribute is found in the stub which we won't have later. | |
3871 | In order to not impose this complication on the rest of the code, | |
3872 | we read them here and copy them to the DWO CU/TU die. */ | |
3873 | stmt_list = low_pc = high_pc = ranges = NULL; | |
3874 | ||
3875 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
3876 | DWO file. */ | |
3877 | if (! this_cu->is_debug_types) | |
3878 | stmt_list = dwarf2_attr (comp_unit_die, DW_AT_stmt_list, cu); | |
3879 | low_pc = dwarf2_attr (comp_unit_die, DW_AT_low_pc, cu); | |
3880 | high_pc = dwarf2_attr (comp_unit_die, DW_AT_high_pc, cu); | |
3881 | ranges = dwarf2_attr (comp_unit_die, DW_AT_ranges, cu); | |
3882 | ||
3883 | /* There should be a DW_AT_addr_base attribute here (if needed). | |
3884 | We need the value before we can process DW_FORM_GNU_addr_index. */ | |
3885 | cu->addr_base = 0; | |
3886 | cu->have_addr_base = 0; | |
3887 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_addr_base, cu); | |
3888 | if (attr) | |
3889 | { | |
3890 | cu->addr_base = DW_UNSND (attr); | |
3891 | cu->have_addr_base = 1; | |
3892 | } | |
3893 | ||
3894 | if (this_cu->is_debug_types) | |
3895 | { | |
3896 | gdb_assert (sig_type != NULL); | |
3897 | signature = sig_type->signature; | |
3898 | } | |
3899 | else | |
3900 | { | |
3901 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_id, cu); | |
3902 | if (! attr) | |
3903 | error (_("Dwarf Error: missing dwo_id [in module %s]"), | |
3904 | dwo_name); | |
3905 | signature = DW_UNSND (attr); | |
3906 | } | |
3907 | ||
3908 | /* We may need the comp_dir in order to find the DWO file. */ | |
3909 | comp_dir = NULL; | |
3910 | attr = dwarf2_attr (comp_unit_die, DW_AT_comp_dir, cu); | |
3911 | if (attr) | |
3912 | comp_dir = DW_STRING (attr); | |
3913 | ||
3914 | if (this_cu->is_debug_types) | |
3915 | dwo_unit = lookup_dwo_type_unit (sig_type, dwo_name, comp_dir); | |
3916 | else | |
3917 | dwo_unit = lookup_dwo_comp_unit (this_cu, dwo_name, comp_dir, | |
3918 | signature); | |
3919 | ||
3920 | if (dwo_unit == NULL) | |
3921 | { | |
3922 | error (_("Dwarf Error: CU at offset 0x%x references unknown DWO" | |
3923 | " with ID %s [in module %s]"), | |
3924 | this_cu->offset.sect_off, | |
3925 | phex (signature, sizeof (signature)), | |
3926 | objfile->name); | |
3927 | } | |
3928 | ||
3929 | /* Set up for reading the DWO CU/TU. */ | |
3930 | cu->dwo_unit = dwo_unit; | |
3931 | section = dwo_unit->info_or_types_section; | |
3932 | begin_info_ptr = info_ptr = section->buffer + dwo_unit->offset.sect_off; | |
3933 | init_cu_die_reader (&reader, cu, section, dwo_unit->dwo_file); | |
3934 | ||
3935 | if (this_cu->is_debug_types) | |
3936 | { | |
3937 | ULONGEST signature; | |
3938 | ||
3939 | info_ptr = read_and_check_type_unit_head (&cu->header, | |
3940 | section, info_ptr, | |
3941 | &signature, NULL); | |
3942 | gdb_assert (sig_type->signature == signature); | |
3943 | gdb_assert (dwo_unit->offset.sect_off == cu->header.offset.sect_off); | |
3944 | gdb_assert (dwo_unit->length | |
3945 | == cu->header.length + cu->header.initial_length_size); | |
3946 | ||
3947 | /* Establish the type offset that can be used to lookup the type. | |
3948 | For DWO files, we don't know it until now. */ | |
3949 | sig_type->type_offset_in_section.sect_off = | |
3950 | dwo_unit->offset.sect_off + dwo_unit->type_offset_in_tu.cu_off; | |
3951 | } | |
3952 | else | |
3953 | { | |
3954 | info_ptr = read_and_check_comp_unit_head (&cu->header, | |
3955 | section, info_ptr, 0); | |
3956 | gdb_assert (dwo_unit->offset.sect_off == cu->header.offset.sect_off); | |
3957 | gdb_assert (dwo_unit->length | |
3958 | == cu->header.length + cu->header.initial_length_size); | |
3959 | } | |
3960 | ||
3961 | /* Discard the original CU's abbrev table, and read the DWO's. */ | |
3962 | dwarf2_free_abbrev_table (cu); | |
3963 | dwarf2_read_abbrevs (cu, &dwo_unit->dwo_file->sections.abbrev); | |
3964 | ||
3965 | /* Read in the die, but leave space to copy over the attributes | |
3966 | from the stub. This has the benefit of simplifying the rest of | |
3967 | the code - all the real work is done here. */ | |
3968 | num_extra_attrs = ((stmt_list != NULL) | |
3969 | + (low_pc != NULL) | |
3970 | + (high_pc != NULL) | |
3971 | + (ranges != NULL)); | |
3972 | info_ptr = read_full_die_1 (&reader, &comp_unit_die, info_ptr, | |
3973 | &has_children, num_extra_attrs); | |
3974 | ||
3975 | /* Copy over the attributes from the stub to the DWO die. */ | |
3976 | i = comp_unit_die->num_attrs; | |
3977 | if (stmt_list != NULL) | |
3978 | comp_unit_die->attrs[i++] = *stmt_list; | |
3979 | if (low_pc != NULL) | |
3980 | comp_unit_die->attrs[i++] = *low_pc; | |
3981 | if (high_pc != NULL) | |
3982 | comp_unit_die->attrs[i++] = *high_pc; | |
3983 | if (ranges != NULL) | |
3984 | comp_unit_die->attrs[i++] = *ranges; | |
3985 | comp_unit_die->num_attrs += num_extra_attrs; | |
3986 | ||
3987 | /* Skip dummy compilation units. */ | |
3988 | if (info_ptr >= begin_info_ptr + dwo_unit->length | |
3989 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
3990 | { | |
3991 | do_cleanups (cleanups); | |
3992 | return; | |
3993 | } | |
3994 | } | |
3995 | ||
dee91e82 DE |
3996 | die_reader_func (&reader, info_ptr, comp_unit_die, has_children, data); |
3997 | ||
3998 | if (free_cu_cleanup != NULL) | |
348e048f | 3999 | { |
dee91e82 DE |
4000 | if (keep) |
4001 | { | |
4002 | /* We've successfully allocated this compilation unit. Let our | |
4003 | caller clean it up when finished with it. */ | |
4004 | discard_cleanups (free_cu_cleanup); | |
4005 | ||
4006 | /* We can only discard free_cu_cleanup and all subsequent cleanups. | |
4007 | So we have to manually free the abbrev table. */ | |
4008 | dwarf2_free_abbrev_table (cu); | |
4009 | ||
4010 | /* Link this CU into read_in_chain. */ | |
4011 | this_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
4012 | dwarf2_per_objfile->read_in_chain = this_cu; | |
4013 | } | |
4014 | else | |
4015 | do_cleanups (free_cu_cleanup); | |
348e048f | 4016 | } |
dee91e82 DE |
4017 | |
4018 | do_cleanups (cleanups); | |
4019 | } | |
4020 | ||
3019eac3 DE |
4021 | /* Read CU/TU THIS_CU in section SECTION, |
4022 | but do not follow DW_AT_GNU_dwo_name if present. | |
4023 | DWO_FILE, if non-NULL, is the DWO file to read (the caller is assumed to | |
4024 | have already done the lookup to find the DWO file). | |
dee91e82 DE |
4025 | |
4026 | The caller is required to fill in THIS_CU->section, THIS_CU->offset, and | |
3019eac3 | 4027 | THIS_CU->is_debug_types, but nothing else. |
dee91e82 DE |
4028 | |
4029 | We fill in THIS_CU->length. | |
4030 | ||
4031 | WARNING: If THIS_CU is a "dummy CU" (used as filler by the incremental | |
4032 | linker) then DIE_READER_FUNC will not get called. | |
4033 | ||
4034 | THIS_CU->cu is always freed when done. | |
3019eac3 DE |
4035 | This is done in order to not leave THIS_CU->cu in a state where we have |
4036 | to care whether it refers to the "main" CU or the DWO CU. */ | |
dee91e82 DE |
4037 | |
4038 | static void | |
4039 | init_cutu_and_read_dies_no_follow (struct dwarf2_per_cu_data *this_cu, | |
4040 | struct dwarf2_section_info *abbrev_section, | |
3019eac3 | 4041 | struct dwo_file *dwo_file, |
dee91e82 DE |
4042 | die_reader_func_ftype *die_reader_func, |
4043 | void *data) | |
4044 | { | |
4045 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
3019eac3 DE |
4046 | struct dwarf2_section_info *section = this_cu->info_or_types_section; |
4047 | bfd *abfd = section->asection->owner; | |
dee91e82 DE |
4048 | struct dwarf2_cu cu; |
4049 | gdb_byte *begin_info_ptr, *info_ptr; | |
4050 | struct die_reader_specs reader; | |
4051 | struct cleanup *cleanups; | |
4052 | struct die_info *comp_unit_die; | |
4053 | int has_children; | |
4054 | ||
4055 | gdb_assert (this_cu->cu == NULL); | |
4056 | ||
dee91e82 DE |
4057 | /* This is cheap if the section is already read in. */ |
4058 | dwarf2_read_section (objfile, section); | |
4059 | ||
4060 | init_one_comp_unit (&cu, this_cu); | |
4061 | ||
4062 | cleanups = make_cleanup (free_stack_comp_unit, &cu); | |
4063 | ||
4064 | begin_info_ptr = info_ptr = section->buffer + this_cu->offset.sect_off; | |
4065 | info_ptr = read_and_check_comp_unit_head (&cu.header, section, info_ptr, | |
3019eac3 | 4066 | this_cu->is_debug_types); |
dee91e82 DE |
4067 | |
4068 | this_cu->length = cu.header.length + cu.header.initial_length_size; | |
4069 | ||
4070 | /* Skip dummy compilation units. */ | |
4071 | if (info_ptr >= begin_info_ptr + this_cu->length | |
4072 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
c906108c | 4073 | { |
dee91e82 | 4074 | do_cleanups (cleanups); |
21b2bd31 | 4075 | return; |
93311388 | 4076 | } |
72bf9492 | 4077 | |
dee91e82 DE |
4078 | dwarf2_read_abbrevs (&cu, abbrev_section); |
4079 | make_cleanup (dwarf2_free_abbrev_table, &cu); | |
4080 | ||
3019eac3 | 4081 | init_cu_die_reader (&reader, &cu, section, dwo_file); |
dee91e82 DE |
4082 | info_ptr = read_full_die (&reader, &comp_unit_die, info_ptr, &has_children); |
4083 | ||
4084 | die_reader_func (&reader, info_ptr, comp_unit_die, has_children, data); | |
4085 | ||
4086 | do_cleanups (cleanups); | |
4087 | } | |
4088 | ||
3019eac3 DE |
4089 | /* Read a CU/TU, except that this does not look for DW_AT_GNU_dwo_name and |
4090 | does not lookup the specified DWO file. | |
4091 | This cannot be used to read DWO files. | |
dee91e82 DE |
4092 | |
4093 | THIS_CU->cu is always freed when done. | |
3019eac3 DE |
4094 | This is done in order to not leave THIS_CU->cu in a state where we have |
4095 | to care whether it refers to the "main" CU or the DWO CU. | |
4096 | We can revisit this if the data shows there's a performance issue. */ | |
dee91e82 DE |
4097 | |
4098 | static void | |
4099 | init_cutu_and_read_dies_simple (struct dwarf2_per_cu_data *this_cu, | |
4100 | die_reader_func_ftype *die_reader_func, | |
4101 | void *data) | |
4102 | { | |
4103 | init_cutu_and_read_dies_no_follow (this_cu, | |
4104 | &dwarf2_per_objfile->abbrev, | |
3019eac3 | 4105 | NULL, |
dee91e82 DE |
4106 | die_reader_func, data); |
4107 | } | |
4108 | ||
4109 | /* die_reader_func for process_psymtab_comp_unit. */ | |
4110 | ||
4111 | static void | |
4112 | process_psymtab_comp_unit_reader (const struct die_reader_specs *reader, | |
4113 | gdb_byte *info_ptr, | |
4114 | struct die_info *comp_unit_die, | |
4115 | int has_children, | |
4116 | void *data) | |
4117 | { | |
4118 | struct dwarf2_cu *cu = reader->cu; | |
4119 | struct objfile *objfile = cu->objfile; | |
4120 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; | |
dee91e82 DE |
4121 | struct attribute *attr; |
4122 | CORE_ADDR baseaddr; | |
4123 | CORE_ADDR best_lowpc = 0, best_highpc = 0; | |
4124 | struct partial_symtab *pst; | |
4125 | int has_pc_info; | |
4126 | const char *filename; | |
95554aad | 4127 | int *want_partial_unit_ptr = data; |
dee91e82 | 4128 | |
95554aad TT |
4129 | if (comp_unit_die->tag == DW_TAG_partial_unit |
4130 | && (want_partial_unit_ptr == NULL | |
4131 | || !*want_partial_unit_ptr)) | |
dee91e82 DE |
4132 | return; |
4133 | ||
95554aad | 4134 | prepare_one_comp_unit (cu, comp_unit_die, language_minimal); |
dee91e82 DE |
4135 | |
4136 | cu->list_in_scope = &file_symbols; | |
c906108c | 4137 | |
93311388 | 4138 | /* Allocate a new partial symbol table structure. */ |
dee91e82 | 4139 | attr = dwarf2_attr (comp_unit_die, DW_AT_name, cu); |
3e2a0cee TT |
4140 | if (attr == NULL || !DW_STRING (attr)) |
4141 | filename = ""; | |
4142 | else | |
4143 | filename = DW_STRING (attr); | |
93311388 | 4144 | pst = start_psymtab_common (objfile, objfile->section_offsets, |
3e2a0cee | 4145 | filename, |
93311388 DE |
4146 | /* TEXTLOW and TEXTHIGH are set below. */ |
4147 | 0, | |
4148 | objfile->global_psymbols.next, | |
4149 | objfile->static_psymbols.next); | |
9750bca9 | 4150 | pst->psymtabs_addrmap_supported = 1; |
72bf9492 | 4151 | |
dee91e82 | 4152 | attr = dwarf2_attr (comp_unit_die, DW_AT_comp_dir, cu); |
d85a05f0 DJ |
4153 | if (attr != NULL) |
4154 | pst->dirname = DW_STRING (attr); | |
72bf9492 | 4155 | |
dee91e82 | 4156 | pst->read_symtab_private = per_cu; |
72bf9492 | 4157 | |
93311388 | 4158 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
e7c27a73 | 4159 | |
0963b4bd | 4160 | /* Store the function that reads in the rest of the symbol table. */ |
93311388 | 4161 | pst->read_symtab = dwarf2_psymtab_to_symtab; |
57349743 | 4162 | |
dee91e82 | 4163 | per_cu->v.psymtab = pst; |
c906108c | 4164 | |
dee91e82 | 4165 | dwarf2_find_base_address (comp_unit_die, cu); |
d85a05f0 | 4166 | |
93311388 DE |
4167 | /* Possibly set the default values of LOWPC and HIGHPC from |
4168 | `DW_AT_ranges'. */ | |
d85a05f0 | 4169 | has_pc_info = dwarf2_get_pc_bounds (comp_unit_die, &best_lowpc, |
dee91e82 | 4170 | &best_highpc, cu, pst); |
d85a05f0 | 4171 | if (has_pc_info == 1 && best_lowpc < best_highpc) |
93311388 DE |
4172 | /* Store the contiguous range if it is not empty; it can be empty for |
4173 | CUs with no code. */ | |
4174 | addrmap_set_empty (objfile->psymtabs_addrmap, | |
d85a05f0 DJ |
4175 | best_lowpc + baseaddr, |
4176 | best_highpc + baseaddr - 1, pst); | |
93311388 DE |
4177 | |
4178 | /* Check if comp unit has_children. | |
4179 | If so, read the rest of the partial symbols from this comp unit. | |
0963b4bd | 4180 | If not, there's no more debug_info for this comp unit. */ |
d85a05f0 | 4181 | if (has_children) |
93311388 DE |
4182 | { |
4183 | struct partial_die_info *first_die; | |
4184 | CORE_ADDR lowpc, highpc; | |
31ffec48 | 4185 | |
93311388 DE |
4186 | lowpc = ((CORE_ADDR) -1); |
4187 | highpc = ((CORE_ADDR) 0); | |
c906108c | 4188 | |
dee91e82 | 4189 | first_die = load_partial_dies (reader, info_ptr, 1); |
c906108c | 4190 | |
93311388 | 4191 | scan_partial_symbols (first_die, &lowpc, &highpc, |
dee91e82 | 4192 | ! has_pc_info, cu); |
57c22c6c | 4193 | |
93311388 DE |
4194 | /* If we didn't find a lowpc, set it to highpc to avoid |
4195 | complaints from `maint check'. */ | |
4196 | if (lowpc == ((CORE_ADDR) -1)) | |
4197 | lowpc = highpc; | |
10b3939b | 4198 | |
93311388 DE |
4199 | /* If the compilation unit didn't have an explicit address range, |
4200 | then use the information extracted from its child dies. */ | |
d85a05f0 | 4201 | if (! has_pc_info) |
93311388 | 4202 | { |
d85a05f0 DJ |
4203 | best_lowpc = lowpc; |
4204 | best_highpc = highpc; | |
93311388 DE |
4205 | } |
4206 | } | |
d85a05f0 DJ |
4207 | pst->textlow = best_lowpc + baseaddr; |
4208 | pst->texthigh = best_highpc + baseaddr; | |
c906108c | 4209 | |
93311388 DE |
4210 | pst->n_global_syms = objfile->global_psymbols.next - |
4211 | (objfile->global_psymbols.list + pst->globals_offset); | |
4212 | pst->n_static_syms = objfile->static_psymbols.next - | |
4213 | (objfile->static_psymbols.list + pst->statics_offset); | |
4214 | sort_pst_symbols (pst); | |
c906108c | 4215 | |
95554aad TT |
4216 | if (!VEC_empty (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs)) |
4217 | { | |
4218 | int i; | |
4219 | int len = VEC_length (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs); | |
4220 | struct dwarf2_per_cu_data *iter; | |
4221 | ||
4222 | /* Fill in 'dependencies' here; we fill in 'users' in a | |
4223 | post-pass. */ | |
4224 | pst->number_of_dependencies = len; | |
4225 | pst->dependencies = obstack_alloc (&objfile->objfile_obstack, | |
4226 | len * sizeof (struct symtab *)); | |
4227 | for (i = 0; | |
4228 | VEC_iterate (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs, | |
4229 | i, iter); | |
4230 | ++i) | |
4231 | pst->dependencies[i] = iter->v.psymtab; | |
4232 | ||
4233 | VEC_free (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs); | |
4234 | } | |
4235 | ||
3019eac3 | 4236 | if (per_cu->is_debug_types) |
348e048f DE |
4237 | { |
4238 | /* It's not clear we want to do anything with stmt lists here. | |
4239 | Waiting to see what gcc ultimately does. */ | |
4240 | } | |
d85a05f0 | 4241 | else |
93311388 DE |
4242 | { |
4243 | /* Get the list of files included in the current compilation unit, | |
4244 | and build a psymtab for each of them. */ | |
dee91e82 | 4245 | dwarf2_build_include_psymtabs (cu, comp_unit_die, pst); |
93311388 | 4246 | } |
dee91e82 | 4247 | } |
ae038cb0 | 4248 | |
dee91e82 DE |
4249 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. |
4250 | Process compilation unit THIS_CU for a psymtab. */ | |
4251 | ||
4252 | static void | |
95554aad TT |
4253 | process_psymtab_comp_unit (struct dwarf2_per_cu_data *this_cu, |
4254 | int want_partial_unit) | |
dee91e82 DE |
4255 | { |
4256 | /* If this compilation unit was already read in, free the | |
4257 | cached copy in order to read it in again. This is | |
4258 | necessary because we skipped some symbols when we first | |
4259 | read in the compilation unit (see load_partial_dies). | |
4260 | This problem could be avoided, but the benefit is unclear. */ | |
4261 | if (this_cu->cu != NULL) | |
4262 | free_one_cached_comp_unit (this_cu); | |
4263 | ||
3019eac3 | 4264 | gdb_assert (! this_cu->is_debug_types); |
fd820528 | 4265 | init_cutu_and_read_dies (this_cu, 0, 0, process_psymtab_comp_unit_reader, |
95554aad | 4266 | &want_partial_unit); |
dee91e82 DE |
4267 | |
4268 | /* Age out any secondary CUs. */ | |
4269 | age_cached_comp_units (); | |
93311388 | 4270 | } |
ff013f42 | 4271 | |
348e048f DE |
4272 | /* Traversal function for htab_traverse_noresize. |
4273 | Process one .debug_types comp-unit. */ | |
4274 | ||
4275 | static int | |
dee91e82 | 4276 | process_psymtab_type_unit (void **slot, void *info) |
348e048f | 4277 | { |
dee91e82 DE |
4278 | struct signatured_type *sig_type = (struct signatured_type *) *slot; |
4279 | struct dwarf2_per_cu_data *per_cu = &sig_type->per_cu; | |
348e048f | 4280 | |
fd820528 | 4281 | gdb_assert (per_cu->is_debug_types); |
a0f42c21 | 4282 | gdb_assert (info == NULL); |
348e048f | 4283 | |
dee91e82 DE |
4284 | /* If this compilation unit was already read in, free the |
4285 | cached copy in order to read it in again. This is | |
4286 | necessary because we skipped some symbols when we first | |
4287 | read in the compilation unit (see load_partial_dies). | |
4288 | This problem could be avoided, but the benefit is unclear. */ | |
4289 | if (per_cu->cu != NULL) | |
4290 | free_one_cached_comp_unit (per_cu); | |
4291 | ||
fd820528 DE |
4292 | init_cutu_and_read_dies (per_cu, 0, 0, process_psymtab_comp_unit_reader, |
4293 | NULL); | |
dee91e82 DE |
4294 | |
4295 | /* Age out any secondary CUs. */ | |
4296 | age_cached_comp_units (); | |
348e048f DE |
4297 | |
4298 | return 1; | |
4299 | } | |
4300 | ||
4301 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
4302 | Build partial symbol tables for the .debug_types comp-units. */ | |
4303 | ||
4304 | static void | |
4305 | build_type_psymtabs (struct objfile *objfile) | |
4306 | { | |
0e50663e | 4307 | if (! create_all_type_units (objfile)) |
348e048f DE |
4308 | return; |
4309 | ||
4310 | htab_traverse_noresize (dwarf2_per_objfile->signatured_types, | |
dee91e82 | 4311 | process_psymtab_type_unit, NULL); |
348e048f DE |
4312 | } |
4313 | ||
60606b2c TT |
4314 | /* A cleanup function that clears objfile's psymtabs_addrmap field. */ |
4315 | ||
4316 | static void | |
4317 | psymtabs_addrmap_cleanup (void *o) | |
4318 | { | |
4319 | struct objfile *objfile = o; | |
ec61707d | 4320 | |
60606b2c TT |
4321 | objfile->psymtabs_addrmap = NULL; |
4322 | } | |
4323 | ||
95554aad TT |
4324 | /* Compute the 'user' field for each psymtab in OBJFILE. */ |
4325 | ||
4326 | static void | |
4327 | set_partial_user (struct objfile *objfile) | |
4328 | { | |
4329 | int i; | |
4330 | ||
4331 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) | |
4332 | { | |
4333 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); | |
4334 | struct partial_symtab *pst = per_cu->v.psymtab; | |
4335 | int j; | |
4336 | ||
4337 | for (j = 0; j < pst->number_of_dependencies; ++j) | |
4338 | { | |
4339 | /* Set the 'user' field only if it is not already set. */ | |
4340 | if (pst->dependencies[j]->user == NULL) | |
4341 | pst->dependencies[j]->user = pst; | |
4342 | } | |
4343 | } | |
4344 | } | |
4345 | ||
93311388 DE |
4346 | /* Build the partial symbol table by doing a quick pass through the |
4347 | .debug_info and .debug_abbrev sections. */ | |
72bf9492 | 4348 | |
93311388 | 4349 | static void |
c67a9c90 | 4350 | dwarf2_build_psymtabs_hard (struct objfile *objfile) |
93311388 | 4351 | { |
60606b2c TT |
4352 | struct cleanup *back_to, *addrmap_cleanup; |
4353 | struct obstack temp_obstack; | |
21b2bd31 | 4354 | int i; |
93311388 | 4355 | |
98bfdba5 PA |
4356 | dwarf2_per_objfile->reading_partial_symbols = 1; |
4357 | ||
be391dca | 4358 | dwarf2_read_section (objfile, &dwarf2_per_objfile->info); |
91c24f0a | 4359 | |
93311388 DE |
4360 | /* Any cached compilation units will be linked by the per-objfile |
4361 | read_in_chain. Make sure to free them when we're done. */ | |
4362 | back_to = make_cleanup (free_cached_comp_units, NULL); | |
72bf9492 | 4363 | |
348e048f DE |
4364 | build_type_psymtabs (objfile); |
4365 | ||
93311388 | 4366 | create_all_comp_units (objfile); |
c906108c | 4367 | |
60606b2c TT |
4368 | /* Create a temporary address map on a temporary obstack. We later |
4369 | copy this to the final obstack. */ | |
4370 | obstack_init (&temp_obstack); | |
4371 | make_cleanup_obstack_free (&temp_obstack); | |
4372 | objfile->psymtabs_addrmap = addrmap_create_mutable (&temp_obstack); | |
4373 | addrmap_cleanup = make_cleanup (psymtabs_addrmap_cleanup, objfile); | |
72bf9492 | 4374 | |
21b2bd31 | 4375 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
93311388 | 4376 | { |
21b2bd31 | 4377 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
aaa75496 | 4378 | |
95554aad | 4379 | process_psymtab_comp_unit (per_cu, 0); |
c906108c | 4380 | } |
ff013f42 | 4381 | |
95554aad TT |
4382 | set_partial_user (objfile); |
4383 | ||
ff013f42 JK |
4384 | objfile->psymtabs_addrmap = addrmap_create_fixed (objfile->psymtabs_addrmap, |
4385 | &objfile->objfile_obstack); | |
60606b2c | 4386 | discard_cleanups (addrmap_cleanup); |
ff013f42 | 4387 | |
ae038cb0 DJ |
4388 | do_cleanups (back_to); |
4389 | } | |
4390 | ||
3019eac3 | 4391 | /* die_reader_func for load_partial_comp_unit. */ |
ae038cb0 DJ |
4392 | |
4393 | static void | |
dee91e82 DE |
4394 | load_partial_comp_unit_reader (const struct die_reader_specs *reader, |
4395 | gdb_byte *info_ptr, | |
4396 | struct die_info *comp_unit_die, | |
4397 | int has_children, | |
4398 | void *data) | |
ae038cb0 | 4399 | { |
dee91e82 | 4400 | struct dwarf2_cu *cu = reader->cu; |
ae038cb0 | 4401 | |
95554aad | 4402 | prepare_one_comp_unit (cu, comp_unit_die, language_minimal); |
ae038cb0 | 4403 | |
ae038cb0 DJ |
4404 | /* Check if comp unit has_children. |
4405 | If so, read the rest of the partial symbols from this comp unit. | |
0963b4bd | 4406 | If not, there's no more debug_info for this comp unit. */ |
d85a05f0 | 4407 | if (has_children) |
dee91e82 DE |
4408 | load_partial_dies (reader, info_ptr, 0); |
4409 | } | |
98bfdba5 | 4410 | |
dee91e82 DE |
4411 | /* Load the partial DIEs for a secondary CU into memory. |
4412 | This is also used when rereading a primary CU with load_all_dies. */ | |
c5b7e1cb | 4413 | |
dee91e82 DE |
4414 | static void |
4415 | load_partial_comp_unit (struct dwarf2_per_cu_data *this_cu) | |
4416 | { | |
fd820528 | 4417 | init_cutu_and_read_dies (this_cu, 1, 1, load_partial_comp_unit_reader, NULL); |
ae038cb0 DJ |
4418 | } |
4419 | ||
9cdd5dbd DE |
4420 | /* Create a list of all compilation units in OBJFILE. |
4421 | This is only done for -readnow and building partial symtabs. */ | |
ae038cb0 DJ |
4422 | |
4423 | static void | |
4424 | create_all_comp_units (struct objfile *objfile) | |
4425 | { | |
4426 | int n_allocated; | |
4427 | int n_comp_units; | |
4428 | struct dwarf2_per_cu_data **all_comp_units; | |
be391dca TT |
4429 | gdb_byte *info_ptr; |
4430 | ||
4431 | dwarf2_read_section (objfile, &dwarf2_per_objfile->info); | |
4432 | info_ptr = dwarf2_per_objfile->info.buffer; | |
ae038cb0 DJ |
4433 | |
4434 | n_comp_units = 0; | |
4435 | n_allocated = 10; | |
4436 | all_comp_units = xmalloc (n_allocated | |
4437 | * sizeof (struct dwarf2_per_cu_data *)); | |
6e70227d | 4438 | |
3e43a32a MS |
4439 | while (info_ptr < dwarf2_per_objfile->info.buffer |
4440 | + dwarf2_per_objfile->info.size) | |
ae038cb0 | 4441 | { |
c764a876 | 4442 | unsigned int length, initial_length_size; |
ae038cb0 | 4443 | struct dwarf2_per_cu_data *this_cu; |
b64f50a1 | 4444 | sect_offset offset; |
ae038cb0 | 4445 | |
b64f50a1 | 4446 | offset.sect_off = info_ptr - dwarf2_per_objfile->info.buffer; |
ae038cb0 DJ |
4447 | |
4448 | /* Read just enough information to find out where the next | |
4449 | compilation unit is. */ | |
c764a876 DE |
4450 | length = read_initial_length (objfile->obfd, info_ptr, |
4451 | &initial_length_size); | |
ae038cb0 DJ |
4452 | |
4453 | /* Save the compilation unit for later lookup. */ | |
4454 | this_cu = obstack_alloc (&objfile->objfile_obstack, | |
4455 | sizeof (struct dwarf2_per_cu_data)); | |
4456 | memset (this_cu, 0, sizeof (*this_cu)); | |
4457 | this_cu->offset = offset; | |
c764a876 | 4458 | this_cu->length = length + initial_length_size; |
9291a0cd | 4459 | this_cu->objfile = objfile; |
3019eac3 | 4460 | this_cu->info_or_types_section = &dwarf2_per_objfile->info; |
ae038cb0 DJ |
4461 | |
4462 | if (n_comp_units == n_allocated) | |
4463 | { | |
4464 | n_allocated *= 2; | |
4465 | all_comp_units = xrealloc (all_comp_units, | |
4466 | n_allocated | |
4467 | * sizeof (struct dwarf2_per_cu_data *)); | |
4468 | } | |
4469 | all_comp_units[n_comp_units++] = this_cu; | |
4470 | ||
4471 | info_ptr = info_ptr + this_cu->length; | |
4472 | } | |
4473 | ||
4474 | dwarf2_per_objfile->all_comp_units | |
4475 | = obstack_alloc (&objfile->objfile_obstack, | |
4476 | n_comp_units * sizeof (struct dwarf2_per_cu_data *)); | |
4477 | memcpy (dwarf2_per_objfile->all_comp_units, all_comp_units, | |
4478 | n_comp_units * sizeof (struct dwarf2_per_cu_data *)); | |
4479 | xfree (all_comp_units); | |
4480 | dwarf2_per_objfile->n_comp_units = n_comp_units; | |
c906108c SS |
4481 | } |
4482 | ||
5734ee8b DJ |
4483 | /* Process all loaded DIEs for compilation unit CU, starting at |
4484 | FIRST_DIE. The caller should pass NEED_PC == 1 if the compilation | |
4485 | unit DIE did not have PC info (DW_AT_low_pc and DW_AT_high_pc, or | |
4486 | DW_AT_ranges). If NEED_PC is set, then this function will set | |
4487 | *LOWPC and *HIGHPC to the lowest and highest PC values found in CU | |
4488 | and record the covered ranges in the addrmap. */ | |
c906108c | 4489 | |
72bf9492 DJ |
4490 | static void |
4491 | scan_partial_symbols (struct partial_die_info *first_die, CORE_ADDR *lowpc, | |
5734ee8b | 4492 | CORE_ADDR *highpc, int need_pc, struct dwarf2_cu *cu) |
c906108c | 4493 | { |
72bf9492 | 4494 | struct partial_die_info *pdi; |
c906108c | 4495 | |
91c24f0a DC |
4496 | /* Now, march along the PDI's, descending into ones which have |
4497 | interesting children but skipping the children of the other ones, | |
4498 | until we reach the end of the compilation unit. */ | |
c906108c | 4499 | |
72bf9492 | 4500 | pdi = first_die; |
91c24f0a | 4501 | |
72bf9492 DJ |
4502 | while (pdi != NULL) |
4503 | { | |
4504 | fixup_partial_die (pdi, cu); | |
c906108c | 4505 | |
f55ee35c | 4506 | /* Anonymous namespaces or modules have no name but have interesting |
91c24f0a DC |
4507 | children, so we need to look at them. Ditto for anonymous |
4508 | enums. */ | |
933c6fe4 | 4509 | |
72bf9492 | 4510 | if (pdi->name != NULL || pdi->tag == DW_TAG_namespace |
95554aad TT |
4511 | || pdi->tag == DW_TAG_module || pdi->tag == DW_TAG_enumeration_type |
4512 | || pdi->tag == DW_TAG_imported_unit) | |
c906108c | 4513 | { |
72bf9492 | 4514 | switch (pdi->tag) |
c906108c SS |
4515 | { |
4516 | case DW_TAG_subprogram: | |
5734ee8b | 4517 | add_partial_subprogram (pdi, lowpc, highpc, need_pc, cu); |
c906108c | 4518 | break; |
72929c62 | 4519 | case DW_TAG_constant: |
c906108c SS |
4520 | case DW_TAG_variable: |
4521 | case DW_TAG_typedef: | |
91c24f0a | 4522 | case DW_TAG_union_type: |
72bf9492 | 4523 | if (!pdi->is_declaration) |
63d06c5c | 4524 | { |
72bf9492 | 4525 | add_partial_symbol (pdi, cu); |
63d06c5c DC |
4526 | } |
4527 | break; | |
c906108c | 4528 | case DW_TAG_class_type: |
680b30c7 | 4529 | case DW_TAG_interface_type: |
c906108c | 4530 | case DW_TAG_structure_type: |
72bf9492 | 4531 | if (!pdi->is_declaration) |
c906108c | 4532 | { |
72bf9492 | 4533 | add_partial_symbol (pdi, cu); |
c906108c SS |
4534 | } |
4535 | break; | |
91c24f0a | 4536 | case DW_TAG_enumeration_type: |
72bf9492 DJ |
4537 | if (!pdi->is_declaration) |
4538 | add_partial_enumeration (pdi, cu); | |
c906108c SS |
4539 | break; |
4540 | case DW_TAG_base_type: | |
a02abb62 | 4541 | case DW_TAG_subrange_type: |
c906108c | 4542 | /* File scope base type definitions are added to the partial |
c5aa993b | 4543 | symbol table. */ |
72bf9492 | 4544 | add_partial_symbol (pdi, cu); |
c906108c | 4545 | break; |
d9fa45fe | 4546 | case DW_TAG_namespace: |
5734ee8b | 4547 | add_partial_namespace (pdi, lowpc, highpc, need_pc, cu); |
91c24f0a | 4548 | break; |
5d7cb8df JK |
4549 | case DW_TAG_module: |
4550 | add_partial_module (pdi, lowpc, highpc, need_pc, cu); | |
4551 | break; | |
95554aad TT |
4552 | case DW_TAG_imported_unit: |
4553 | { | |
4554 | struct dwarf2_per_cu_data *per_cu; | |
4555 | ||
4556 | per_cu = dwarf2_find_containing_comp_unit (pdi->d.offset, | |
4557 | cu->objfile); | |
4558 | ||
4559 | /* Go read the partial unit, if needed. */ | |
4560 | if (per_cu->v.psymtab == NULL) | |
4561 | process_psymtab_comp_unit (per_cu, 1); | |
4562 | ||
4563 | VEC_safe_push (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs, | |
4564 | per_cu); | |
4565 | } | |
4566 | break; | |
c906108c SS |
4567 | default: |
4568 | break; | |
4569 | } | |
4570 | } | |
4571 | ||
72bf9492 DJ |
4572 | /* If the die has a sibling, skip to the sibling. */ |
4573 | ||
4574 | pdi = pdi->die_sibling; | |
4575 | } | |
4576 | } | |
4577 | ||
4578 | /* Functions used to compute the fully scoped name of a partial DIE. | |
91c24f0a | 4579 | |
72bf9492 | 4580 | Normally, this is simple. For C++, the parent DIE's fully scoped |
987504bb JJ |
4581 | name is concatenated with "::" and the partial DIE's name. For |
4582 | Java, the same thing occurs except that "." is used instead of "::". | |
72bf9492 DJ |
4583 | Enumerators are an exception; they use the scope of their parent |
4584 | enumeration type, i.e. the name of the enumeration type is not | |
4585 | prepended to the enumerator. | |
91c24f0a | 4586 | |
72bf9492 DJ |
4587 | There are two complexities. One is DW_AT_specification; in this |
4588 | case "parent" means the parent of the target of the specification, | |
4589 | instead of the direct parent of the DIE. The other is compilers | |
4590 | which do not emit DW_TAG_namespace; in this case we try to guess | |
4591 | the fully qualified name of structure types from their members' | |
4592 | linkage names. This must be done using the DIE's children rather | |
4593 | than the children of any DW_AT_specification target. We only need | |
4594 | to do this for structures at the top level, i.e. if the target of | |
4595 | any DW_AT_specification (if any; otherwise the DIE itself) does not | |
4596 | have a parent. */ | |
4597 | ||
4598 | /* Compute the scope prefix associated with PDI's parent, in | |
4599 | compilation unit CU. The result will be allocated on CU's | |
4600 | comp_unit_obstack, or a copy of the already allocated PDI->NAME | |
4601 | field. NULL is returned if no prefix is necessary. */ | |
4602 | static char * | |
4603 | partial_die_parent_scope (struct partial_die_info *pdi, | |
4604 | struct dwarf2_cu *cu) | |
4605 | { | |
4606 | char *grandparent_scope; | |
4607 | struct partial_die_info *parent, *real_pdi; | |
91c24f0a | 4608 | |
72bf9492 DJ |
4609 | /* We need to look at our parent DIE; if we have a DW_AT_specification, |
4610 | then this means the parent of the specification DIE. */ | |
4611 | ||
4612 | real_pdi = pdi; | |
72bf9492 | 4613 | while (real_pdi->has_specification) |
10b3939b | 4614 | real_pdi = find_partial_die (real_pdi->spec_offset, cu); |
72bf9492 DJ |
4615 | |
4616 | parent = real_pdi->die_parent; | |
4617 | if (parent == NULL) | |
4618 | return NULL; | |
4619 | ||
4620 | if (parent->scope_set) | |
4621 | return parent->scope; | |
4622 | ||
4623 | fixup_partial_die (parent, cu); | |
4624 | ||
10b3939b | 4625 | grandparent_scope = partial_die_parent_scope (parent, cu); |
72bf9492 | 4626 | |
acebe513 UW |
4627 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
4628 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
4629 | Work around this problem here. */ | |
4630 | if (cu->language == language_cplus | |
6e70227d | 4631 | && parent->tag == DW_TAG_namespace |
acebe513 UW |
4632 | && strcmp (parent->name, "::") == 0 |
4633 | && grandparent_scope == NULL) | |
4634 | { | |
4635 | parent->scope = NULL; | |
4636 | parent->scope_set = 1; | |
4637 | return NULL; | |
4638 | } | |
4639 | ||
9c6c53f7 SA |
4640 | if (pdi->tag == DW_TAG_enumerator) |
4641 | /* Enumerators should not get the name of the enumeration as a prefix. */ | |
4642 | parent->scope = grandparent_scope; | |
4643 | else if (parent->tag == DW_TAG_namespace | |
f55ee35c | 4644 | || parent->tag == DW_TAG_module |
72bf9492 DJ |
4645 | || parent->tag == DW_TAG_structure_type |
4646 | || parent->tag == DW_TAG_class_type | |
680b30c7 | 4647 | || parent->tag == DW_TAG_interface_type |
ceeb3d5a TT |
4648 | || parent->tag == DW_TAG_union_type |
4649 | || parent->tag == DW_TAG_enumeration_type) | |
72bf9492 DJ |
4650 | { |
4651 | if (grandparent_scope == NULL) | |
4652 | parent->scope = parent->name; | |
4653 | else | |
3e43a32a MS |
4654 | parent->scope = typename_concat (&cu->comp_unit_obstack, |
4655 | grandparent_scope, | |
f55ee35c | 4656 | parent->name, 0, cu); |
72bf9492 | 4657 | } |
72bf9492 DJ |
4658 | else |
4659 | { | |
4660 | /* FIXME drow/2004-04-01: What should we be doing with | |
4661 | function-local names? For partial symbols, we should probably be | |
4662 | ignoring them. */ | |
4663 | complaint (&symfile_complaints, | |
e2e0b3e5 | 4664 | _("unhandled containing DIE tag %d for DIE at %d"), |
b64f50a1 | 4665 | parent->tag, pdi->offset.sect_off); |
72bf9492 | 4666 | parent->scope = grandparent_scope; |
c906108c SS |
4667 | } |
4668 | ||
72bf9492 DJ |
4669 | parent->scope_set = 1; |
4670 | return parent->scope; | |
4671 | } | |
4672 | ||
4673 | /* Return the fully scoped name associated with PDI, from compilation unit | |
4674 | CU. The result will be allocated with malloc. */ | |
4568ecf9 | 4675 | |
72bf9492 DJ |
4676 | static char * |
4677 | partial_die_full_name (struct partial_die_info *pdi, | |
4678 | struct dwarf2_cu *cu) | |
4679 | { | |
4680 | char *parent_scope; | |
4681 | ||
98bfdba5 PA |
4682 | /* If this is a template instantiation, we can not work out the |
4683 | template arguments from partial DIEs. So, unfortunately, we have | |
4684 | to go through the full DIEs. At least any work we do building | |
4685 | types here will be reused if full symbols are loaded later. */ | |
4686 | if (pdi->has_template_arguments) | |
4687 | { | |
4688 | fixup_partial_die (pdi, cu); | |
4689 | ||
4690 | if (pdi->name != NULL && strchr (pdi->name, '<') == NULL) | |
4691 | { | |
4692 | struct die_info *die; | |
4693 | struct attribute attr; | |
4694 | struct dwarf2_cu *ref_cu = cu; | |
4695 | ||
b64f50a1 | 4696 | /* DW_FORM_ref_addr is using section offset. */ |
98bfdba5 PA |
4697 | attr.name = 0; |
4698 | attr.form = DW_FORM_ref_addr; | |
4568ecf9 | 4699 | attr.u.unsnd = pdi->offset.sect_off; |
98bfdba5 PA |
4700 | die = follow_die_ref (NULL, &attr, &ref_cu); |
4701 | ||
4702 | return xstrdup (dwarf2_full_name (NULL, die, ref_cu)); | |
4703 | } | |
4704 | } | |
4705 | ||
72bf9492 DJ |
4706 | parent_scope = partial_die_parent_scope (pdi, cu); |
4707 | if (parent_scope == NULL) | |
4708 | return NULL; | |
4709 | else | |
f55ee35c | 4710 | return typename_concat (NULL, parent_scope, pdi->name, 0, cu); |
c906108c SS |
4711 | } |
4712 | ||
4713 | static void | |
72bf9492 | 4714 | add_partial_symbol (struct partial_die_info *pdi, struct dwarf2_cu *cu) |
c906108c | 4715 | { |
e7c27a73 | 4716 | struct objfile *objfile = cu->objfile; |
c906108c | 4717 | CORE_ADDR addr = 0; |
decbce07 | 4718 | char *actual_name = NULL; |
e142c38c | 4719 | CORE_ADDR baseaddr; |
72bf9492 | 4720 | int built_actual_name = 0; |
e142c38c DJ |
4721 | |
4722 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 4723 | |
94af9270 KS |
4724 | actual_name = partial_die_full_name (pdi, cu); |
4725 | if (actual_name) | |
4726 | built_actual_name = 1; | |
63d06c5c | 4727 | |
72bf9492 DJ |
4728 | if (actual_name == NULL) |
4729 | actual_name = pdi->name; | |
4730 | ||
c906108c SS |
4731 | switch (pdi->tag) |
4732 | { | |
4733 | case DW_TAG_subprogram: | |
2cfa0c8d | 4734 | if (pdi->is_external || cu->language == language_ada) |
c906108c | 4735 | { |
2cfa0c8d JB |
4736 | /* brobecker/2007-12-26: Normally, only "external" DIEs are part |
4737 | of the global scope. But in Ada, we want to be able to access | |
4738 | nested procedures globally. So all Ada subprograms are stored | |
4739 | in the global scope. */ | |
f47fb265 | 4740 | /* prim_record_minimal_symbol (actual_name, pdi->lowpc + baseaddr, |
c5aa993b | 4741 | mst_text, objfile); */ |
f47fb265 MS |
4742 | add_psymbol_to_list (actual_name, strlen (actual_name), |
4743 | built_actual_name, | |
4744 | VAR_DOMAIN, LOC_BLOCK, | |
4745 | &objfile->global_psymbols, | |
4746 | 0, pdi->lowpc + baseaddr, | |
4747 | cu->language, objfile); | |
c906108c SS |
4748 | } |
4749 | else | |
4750 | { | |
f47fb265 | 4751 | /* prim_record_minimal_symbol (actual_name, pdi->lowpc + baseaddr, |
c5aa993b | 4752 | mst_file_text, objfile); */ |
f47fb265 MS |
4753 | add_psymbol_to_list (actual_name, strlen (actual_name), |
4754 | built_actual_name, | |
4755 | VAR_DOMAIN, LOC_BLOCK, | |
4756 | &objfile->static_psymbols, | |
4757 | 0, pdi->lowpc + baseaddr, | |
4758 | cu->language, objfile); | |
c906108c SS |
4759 | } |
4760 | break; | |
72929c62 JB |
4761 | case DW_TAG_constant: |
4762 | { | |
4763 | struct psymbol_allocation_list *list; | |
4764 | ||
4765 | if (pdi->is_external) | |
4766 | list = &objfile->global_psymbols; | |
4767 | else | |
4768 | list = &objfile->static_psymbols; | |
f47fb265 MS |
4769 | add_psymbol_to_list (actual_name, strlen (actual_name), |
4770 | built_actual_name, VAR_DOMAIN, LOC_STATIC, | |
4771 | list, 0, 0, cu->language, objfile); | |
72929c62 JB |
4772 | } |
4773 | break; | |
c906108c | 4774 | case DW_TAG_variable: |
95554aad TT |
4775 | if (pdi->d.locdesc) |
4776 | addr = decode_locdesc (pdi->d.locdesc, cu); | |
caac4577 | 4777 | |
95554aad | 4778 | if (pdi->d.locdesc |
caac4577 JG |
4779 | && addr == 0 |
4780 | && !dwarf2_per_objfile->has_section_at_zero) | |
4781 | { | |
4782 | /* A global or static variable may also have been stripped | |
4783 | out by the linker if unused, in which case its address | |
4784 | will be nullified; do not add such variables into partial | |
4785 | symbol table then. */ | |
4786 | } | |
4787 | else if (pdi->is_external) | |
c906108c SS |
4788 | { |
4789 | /* Global Variable. | |
4790 | Don't enter into the minimal symbol tables as there is | |
4791 | a minimal symbol table entry from the ELF symbols already. | |
4792 | Enter into partial symbol table if it has a location | |
4793 | descriptor or a type. | |
4794 | If the location descriptor is missing, new_symbol will create | |
4795 | a LOC_UNRESOLVED symbol, the address of the variable will then | |
4796 | be determined from the minimal symbol table whenever the variable | |
4797 | is referenced. | |
4798 | The address for the partial symbol table entry is not | |
4799 | used by GDB, but it comes in handy for debugging partial symbol | |
4800 | table building. */ | |
4801 | ||
95554aad | 4802 | if (pdi->d.locdesc || pdi->has_type) |
f47fb265 MS |
4803 | add_psymbol_to_list (actual_name, strlen (actual_name), |
4804 | built_actual_name, | |
4805 | VAR_DOMAIN, LOC_STATIC, | |
4806 | &objfile->global_psymbols, | |
4807 | 0, addr + baseaddr, | |
4808 | cu->language, objfile); | |
c906108c SS |
4809 | } |
4810 | else | |
4811 | { | |
0963b4bd | 4812 | /* Static Variable. Skip symbols without location descriptors. */ |
95554aad | 4813 | if (pdi->d.locdesc == NULL) |
decbce07 MS |
4814 | { |
4815 | if (built_actual_name) | |
4816 | xfree (actual_name); | |
4817 | return; | |
4818 | } | |
f47fb265 | 4819 | /* prim_record_minimal_symbol (actual_name, addr + baseaddr, |
c5aa993b | 4820 | mst_file_data, objfile); */ |
f47fb265 MS |
4821 | add_psymbol_to_list (actual_name, strlen (actual_name), |
4822 | built_actual_name, | |
4823 | VAR_DOMAIN, LOC_STATIC, | |
4824 | &objfile->static_psymbols, | |
4825 | 0, addr + baseaddr, | |
4826 | cu->language, objfile); | |
c906108c SS |
4827 | } |
4828 | break; | |
4829 | case DW_TAG_typedef: | |
4830 | case DW_TAG_base_type: | |
a02abb62 | 4831 | case DW_TAG_subrange_type: |
38d518c9 | 4832 | add_psymbol_to_list (actual_name, strlen (actual_name), |
04a679b8 | 4833 | built_actual_name, |
176620f1 | 4834 | VAR_DOMAIN, LOC_TYPEDEF, |
c906108c | 4835 | &objfile->static_psymbols, |
e142c38c | 4836 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c | 4837 | break; |
72bf9492 DJ |
4838 | case DW_TAG_namespace: |
4839 | add_psymbol_to_list (actual_name, strlen (actual_name), | |
04a679b8 | 4840 | built_actual_name, |
72bf9492 DJ |
4841 | VAR_DOMAIN, LOC_TYPEDEF, |
4842 | &objfile->global_psymbols, | |
4843 | 0, (CORE_ADDR) 0, cu->language, objfile); | |
4844 | break; | |
c906108c | 4845 | case DW_TAG_class_type: |
680b30c7 | 4846 | case DW_TAG_interface_type: |
c906108c SS |
4847 | case DW_TAG_structure_type: |
4848 | case DW_TAG_union_type: | |
4849 | case DW_TAG_enumeration_type: | |
fa4028e9 JB |
4850 | /* Skip external references. The DWARF standard says in the section |
4851 | about "Structure, Union, and Class Type Entries": "An incomplete | |
4852 | structure, union or class type is represented by a structure, | |
4853 | union or class entry that does not have a byte size attribute | |
4854 | and that has a DW_AT_declaration attribute." */ | |
4855 | if (!pdi->has_byte_size && pdi->is_declaration) | |
decbce07 MS |
4856 | { |
4857 | if (built_actual_name) | |
4858 | xfree (actual_name); | |
4859 | return; | |
4860 | } | |
fa4028e9 | 4861 | |
63d06c5c DC |
4862 | /* NOTE: carlton/2003-10-07: See comment in new_symbol about |
4863 | static vs. global. */ | |
38d518c9 | 4864 | add_psymbol_to_list (actual_name, strlen (actual_name), |
04a679b8 | 4865 | built_actual_name, |
176620f1 | 4866 | STRUCT_DOMAIN, LOC_TYPEDEF, |
987504bb JJ |
4867 | (cu->language == language_cplus |
4868 | || cu->language == language_java) | |
63d06c5c DC |
4869 | ? &objfile->global_psymbols |
4870 | : &objfile->static_psymbols, | |
e142c38c | 4871 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c | 4872 | |
c906108c SS |
4873 | break; |
4874 | case DW_TAG_enumerator: | |
38d518c9 | 4875 | add_psymbol_to_list (actual_name, strlen (actual_name), |
04a679b8 | 4876 | built_actual_name, |
176620f1 | 4877 | VAR_DOMAIN, LOC_CONST, |
987504bb JJ |
4878 | (cu->language == language_cplus |
4879 | || cu->language == language_java) | |
f6fe98ef DJ |
4880 | ? &objfile->global_psymbols |
4881 | : &objfile->static_psymbols, | |
e142c38c | 4882 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c SS |
4883 | break; |
4884 | default: | |
4885 | break; | |
4886 | } | |
5c4e30ca | 4887 | |
72bf9492 DJ |
4888 | if (built_actual_name) |
4889 | xfree (actual_name); | |
c906108c SS |
4890 | } |
4891 | ||
5c4e30ca DC |
4892 | /* Read a partial die corresponding to a namespace; also, add a symbol |
4893 | corresponding to that namespace to the symbol table. NAMESPACE is | |
4894 | the name of the enclosing namespace. */ | |
91c24f0a | 4895 | |
72bf9492 DJ |
4896 | static void |
4897 | add_partial_namespace (struct partial_die_info *pdi, | |
91c24f0a | 4898 | CORE_ADDR *lowpc, CORE_ADDR *highpc, |
5734ee8b | 4899 | int need_pc, struct dwarf2_cu *cu) |
91c24f0a | 4900 | { |
72bf9492 | 4901 | /* Add a symbol for the namespace. */ |
e7c27a73 | 4902 | |
72bf9492 | 4903 | add_partial_symbol (pdi, cu); |
5c4e30ca DC |
4904 | |
4905 | /* Now scan partial symbols in that namespace. */ | |
4906 | ||
91c24f0a | 4907 | if (pdi->has_children) |
5734ee8b | 4908 | scan_partial_symbols (pdi->die_child, lowpc, highpc, need_pc, cu); |
91c24f0a DC |
4909 | } |
4910 | ||
5d7cb8df JK |
4911 | /* Read a partial die corresponding to a Fortran module. */ |
4912 | ||
4913 | static void | |
4914 | add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, | |
4915 | CORE_ADDR *highpc, int need_pc, struct dwarf2_cu *cu) | |
4916 | { | |
f55ee35c | 4917 | /* Now scan partial symbols in that module. */ |
5d7cb8df JK |
4918 | |
4919 | if (pdi->has_children) | |
4920 | scan_partial_symbols (pdi->die_child, lowpc, highpc, need_pc, cu); | |
4921 | } | |
4922 | ||
bc30ff58 JB |
4923 | /* Read a partial die corresponding to a subprogram and create a partial |
4924 | symbol for that subprogram. When the CU language allows it, this | |
4925 | routine also defines a partial symbol for each nested subprogram | |
4926 | that this subprogram contains. | |
6e70227d | 4927 | |
bc30ff58 JB |
4928 | DIE my also be a lexical block, in which case we simply search |
4929 | recursively for suprograms defined inside that lexical block. | |
4930 | Again, this is only performed when the CU language allows this | |
4931 | type of definitions. */ | |
4932 | ||
4933 | static void | |
4934 | add_partial_subprogram (struct partial_die_info *pdi, | |
4935 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 4936 | int need_pc, struct dwarf2_cu *cu) |
bc30ff58 JB |
4937 | { |
4938 | if (pdi->tag == DW_TAG_subprogram) | |
4939 | { | |
4940 | if (pdi->has_pc_info) | |
4941 | { | |
4942 | if (pdi->lowpc < *lowpc) | |
4943 | *lowpc = pdi->lowpc; | |
4944 | if (pdi->highpc > *highpc) | |
4945 | *highpc = pdi->highpc; | |
5734ee8b DJ |
4946 | if (need_pc) |
4947 | { | |
4948 | CORE_ADDR baseaddr; | |
4949 | struct objfile *objfile = cu->objfile; | |
4950 | ||
4951 | baseaddr = ANOFFSET (objfile->section_offsets, | |
4952 | SECT_OFF_TEXT (objfile)); | |
4953 | addrmap_set_empty (objfile->psymtabs_addrmap, | |
01637564 DE |
4954 | pdi->lowpc + baseaddr, |
4955 | pdi->highpc - 1 + baseaddr, | |
9291a0cd | 4956 | cu->per_cu->v.psymtab); |
5734ee8b | 4957 | } |
481860b3 GB |
4958 | } |
4959 | ||
4960 | if (pdi->has_pc_info || (!pdi->is_external && pdi->may_be_inlined)) | |
4961 | { | |
bc30ff58 | 4962 | if (!pdi->is_declaration) |
e8d05480 JB |
4963 | /* Ignore subprogram DIEs that do not have a name, they are |
4964 | illegal. Do not emit a complaint at this point, we will | |
4965 | do so when we convert this psymtab into a symtab. */ | |
4966 | if (pdi->name) | |
4967 | add_partial_symbol (pdi, cu); | |
bc30ff58 JB |
4968 | } |
4969 | } | |
6e70227d | 4970 | |
bc30ff58 JB |
4971 | if (! pdi->has_children) |
4972 | return; | |
4973 | ||
4974 | if (cu->language == language_ada) | |
4975 | { | |
4976 | pdi = pdi->die_child; | |
4977 | while (pdi != NULL) | |
4978 | { | |
4979 | fixup_partial_die (pdi, cu); | |
4980 | if (pdi->tag == DW_TAG_subprogram | |
4981 | || pdi->tag == DW_TAG_lexical_block) | |
5734ee8b | 4982 | add_partial_subprogram (pdi, lowpc, highpc, need_pc, cu); |
bc30ff58 JB |
4983 | pdi = pdi->die_sibling; |
4984 | } | |
4985 | } | |
4986 | } | |
4987 | ||
91c24f0a DC |
4988 | /* Read a partial die corresponding to an enumeration type. */ |
4989 | ||
72bf9492 DJ |
4990 | static void |
4991 | add_partial_enumeration (struct partial_die_info *enum_pdi, | |
4992 | struct dwarf2_cu *cu) | |
91c24f0a | 4993 | { |
72bf9492 | 4994 | struct partial_die_info *pdi; |
91c24f0a DC |
4995 | |
4996 | if (enum_pdi->name != NULL) | |
72bf9492 DJ |
4997 | add_partial_symbol (enum_pdi, cu); |
4998 | ||
4999 | pdi = enum_pdi->die_child; | |
5000 | while (pdi) | |
91c24f0a | 5001 | { |
72bf9492 | 5002 | if (pdi->tag != DW_TAG_enumerator || pdi->name == NULL) |
e2e0b3e5 | 5003 | complaint (&symfile_complaints, _("malformed enumerator DIE ignored")); |
91c24f0a | 5004 | else |
72bf9492 DJ |
5005 | add_partial_symbol (pdi, cu); |
5006 | pdi = pdi->die_sibling; | |
91c24f0a | 5007 | } |
91c24f0a DC |
5008 | } |
5009 | ||
6caca83c CC |
5010 | /* Return the initial uleb128 in the die at INFO_PTR. */ |
5011 | ||
5012 | static unsigned int | |
5013 | peek_abbrev_code (bfd *abfd, gdb_byte *info_ptr) | |
5014 | { | |
5015 | unsigned int bytes_read; | |
5016 | ||
5017 | return read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
5018 | } | |
5019 | ||
4bb7a0a7 DJ |
5020 | /* Read the initial uleb128 in the die at INFO_PTR in compilation unit CU. |
5021 | Return the corresponding abbrev, or NULL if the number is zero (indicating | |
5022 | an empty DIE). In either case *BYTES_READ will be set to the length of | |
5023 | the initial number. */ | |
5024 | ||
5025 | static struct abbrev_info * | |
fe1b8b76 | 5026 | peek_die_abbrev (gdb_byte *info_ptr, unsigned int *bytes_read, |
891d2f0b | 5027 | struct dwarf2_cu *cu) |
4bb7a0a7 DJ |
5028 | { |
5029 | bfd *abfd = cu->objfile->obfd; | |
5030 | unsigned int abbrev_number; | |
5031 | struct abbrev_info *abbrev; | |
5032 | ||
5033 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
5034 | ||
5035 | if (abbrev_number == 0) | |
5036 | return NULL; | |
5037 | ||
5038 | abbrev = dwarf2_lookup_abbrev (abbrev_number, cu); | |
5039 | if (!abbrev) | |
5040 | { | |
3e43a32a MS |
5041 | error (_("Dwarf Error: Could not find abbrev number %d [in module %s]"), |
5042 | abbrev_number, bfd_get_filename (abfd)); | |
4bb7a0a7 DJ |
5043 | } |
5044 | ||
5045 | return abbrev; | |
5046 | } | |
5047 | ||
93311388 DE |
5048 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
5049 | Returns a pointer to the end of a series of DIEs, terminated by an empty | |
4bb7a0a7 DJ |
5050 | DIE. Any children of the skipped DIEs will also be skipped. */ |
5051 | ||
fe1b8b76 | 5052 | static gdb_byte * |
dee91e82 | 5053 | skip_children (const struct die_reader_specs *reader, gdb_byte *info_ptr) |
4bb7a0a7 | 5054 | { |
dee91e82 | 5055 | struct dwarf2_cu *cu = reader->cu; |
4bb7a0a7 DJ |
5056 | struct abbrev_info *abbrev; |
5057 | unsigned int bytes_read; | |
5058 | ||
5059 | while (1) | |
5060 | { | |
5061 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, cu); | |
5062 | if (abbrev == NULL) | |
5063 | return info_ptr + bytes_read; | |
5064 | else | |
dee91e82 | 5065 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
4bb7a0a7 DJ |
5066 | } |
5067 | } | |
5068 | ||
93311388 DE |
5069 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
5070 | INFO_PTR should point just after the initial uleb128 of a DIE, and the | |
4bb7a0a7 DJ |
5071 | abbrev corresponding to that skipped uleb128 should be passed in |
5072 | ABBREV. Returns a pointer to this DIE's sibling, skipping any | |
5073 | children. */ | |
5074 | ||
fe1b8b76 | 5075 | static gdb_byte * |
dee91e82 DE |
5076 | skip_one_die (const struct die_reader_specs *reader, gdb_byte *info_ptr, |
5077 | struct abbrev_info *abbrev) | |
4bb7a0a7 DJ |
5078 | { |
5079 | unsigned int bytes_read; | |
5080 | struct attribute attr; | |
dee91e82 DE |
5081 | bfd *abfd = reader->abfd; |
5082 | struct dwarf2_cu *cu = reader->cu; | |
5083 | gdb_byte *buffer = reader->buffer; | |
f664829e DE |
5084 | const gdb_byte *buffer_end = reader->buffer_end; |
5085 | gdb_byte *start_info_ptr = info_ptr; | |
4bb7a0a7 DJ |
5086 | unsigned int form, i; |
5087 | ||
5088 | for (i = 0; i < abbrev->num_attrs; i++) | |
5089 | { | |
5090 | /* The only abbrev we care about is DW_AT_sibling. */ | |
5091 | if (abbrev->attrs[i].name == DW_AT_sibling) | |
5092 | { | |
dee91e82 | 5093 | read_attribute (reader, &attr, &abbrev->attrs[i], info_ptr); |
4bb7a0a7 | 5094 | if (attr.form == DW_FORM_ref_addr) |
3e43a32a MS |
5095 | complaint (&symfile_complaints, |
5096 | _("ignoring absolute DW_AT_sibling")); | |
4bb7a0a7 | 5097 | else |
b64f50a1 | 5098 | return buffer + dwarf2_get_ref_die_offset (&attr).sect_off; |
4bb7a0a7 DJ |
5099 | } |
5100 | ||
5101 | /* If it isn't DW_AT_sibling, skip this attribute. */ | |
5102 | form = abbrev->attrs[i].form; | |
5103 | skip_attribute: | |
5104 | switch (form) | |
5105 | { | |
4bb7a0a7 | 5106 | case DW_FORM_ref_addr: |
ae411497 TT |
5107 | /* In DWARF 2, DW_FORM_ref_addr is address sized; in DWARF 3 |
5108 | and later it is offset sized. */ | |
5109 | if (cu->header.version == 2) | |
5110 | info_ptr += cu->header.addr_size; | |
5111 | else | |
5112 | info_ptr += cu->header.offset_size; | |
5113 | break; | |
5114 | case DW_FORM_addr: | |
4bb7a0a7 DJ |
5115 | info_ptr += cu->header.addr_size; |
5116 | break; | |
5117 | case DW_FORM_data1: | |
5118 | case DW_FORM_ref1: | |
5119 | case DW_FORM_flag: | |
5120 | info_ptr += 1; | |
5121 | break; | |
2dc7f7b3 TT |
5122 | case DW_FORM_flag_present: |
5123 | break; | |
4bb7a0a7 DJ |
5124 | case DW_FORM_data2: |
5125 | case DW_FORM_ref2: | |
5126 | info_ptr += 2; | |
5127 | break; | |
5128 | case DW_FORM_data4: | |
5129 | case DW_FORM_ref4: | |
5130 | info_ptr += 4; | |
5131 | break; | |
5132 | case DW_FORM_data8: | |
5133 | case DW_FORM_ref8: | |
55f1336d | 5134 | case DW_FORM_ref_sig8: |
4bb7a0a7 DJ |
5135 | info_ptr += 8; |
5136 | break; | |
5137 | case DW_FORM_string: | |
9b1c24c8 | 5138 | read_direct_string (abfd, info_ptr, &bytes_read); |
4bb7a0a7 DJ |
5139 | info_ptr += bytes_read; |
5140 | break; | |
2dc7f7b3 | 5141 | case DW_FORM_sec_offset: |
4bb7a0a7 DJ |
5142 | case DW_FORM_strp: |
5143 | info_ptr += cu->header.offset_size; | |
5144 | break; | |
2dc7f7b3 | 5145 | case DW_FORM_exprloc: |
4bb7a0a7 DJ |
5146 | case DW_FORM_block: |
5147 | info_ptr += read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
5148 | info_ptr += bytes_read; | |
5149 | break; | |
5150 | case DW_FORM_block1: | |
5151 | info_ptr += 1 + read_1_byte (abfd, info_ptr); | |
5152 | break; | |
5153 | case DW_FORM_block2: | |
5154 | info_ptr += 2 + read_2_bytes (abfd, info_ptr); | |
5155 | break; | |
5156 | case DW_FORM_block4: | |
5157 | info_ptr += 4 + read_4_bytes (abfd, info_ptr); | |
5158 | break; | |
5159 | case DW_FORM_sdata: | |
5160 | case DW_FORM_udata: | |
5161 | case DW_FORM_ref_udata: | |
3019eac3 DE |
5162 | case DW_FORM_GNU_addr_index: |
5163 | case DW_FORM_GNU_str_index: | |
f664829e | 5164 | info_ptr = (gdb_byte *) safe_skip_leb128 (info_ptr, buffer_end); |
4bb7a0a7 DJ |
5165 | break; |
5166 | case DW_FORM_indirect: | |
5167 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
5168 | info_ptr += bytes_read; | |
5169 | /* We need to continue parsing from here, so just go back to | |
5170 | the top. */ | |
5171 | goto skip_attribute; | |
5172 | ||
5173 | default: | |
3e43a32a MS |
5174 | error (_("Dwarf Error: Cannot handle %s " |
5175 | "in DWARF reader [in module %s]"), | |
4bb7a0a7 DJ |
5176 | dwarf_form_name (form), |
5177 | bfd_get_filename (abfd)); | |
5178 | } | |
5179 | } | |
5180 | ||
5181 | if (abbrev->has_children) | |
dee91e82 | 5182 | return skip_children (reader, info_ptr); |
4bb7a0a7 DJ |
5183 | else |
5184 | return info_ptr; | |
5185 | } | |
5186 | ||
93311388 | 5187 | /* Locate ORIG_PDI's sibling. |
dee91e82 | 5188 | INFO_PTR should point to the start of the next DIE after ORIG_PDI. */ |
91c24f0a | 5189 | |
fe1b8b76 | 5190 | static gdb_byte * |
dee91e82 DE |
5191 | locate_pdi_sibling (const struct die_reader_specs *reader, |
5192 | struct partial_die_info *orig_pdi, | |
5193 | gdb_byte *info_ptr) | |
91c24f0a DC |
5194 | { |
5195 | /* Do we know the sibling already? */ | |
72bf9492 | 5196 | |
91c24f0a DC |
5197 | if (orig_pdi->sibling) |
5198 | return orig_pdi->sibling; | |
5199 | ||
5200 | /* Are there any children to deal with? */ | |
5201 | ||
5202 | if (!orig_pdi->has_children) | |
5203 | return info_ptr; | |
5204 | ||
4bb7a0a7 | 5205 | /* Skip the children the long way. */ |
91c24f0a | 5206 | |
dee91e82 | 5207 | return skip_children (reader, info_ptr); |
91c24f0a DC |
5208 | } |
5209 | ||
c906108c SS |
5210 | /* Expand this partial symbol table into a full symbol table. */ |
5211 | ||
5212 | static void | |
fba45db2 | 5213 | dwarf2_psymtab_to_symtab (struct partial_symtab *pst) |
c906108c | 5214 | { |
c906108c SS |
5215 | if (pst != NULL) |
5216 | { | |
5217 | if (pst->readin) | |
5218 | { | |
3e43a32a MS |
5219 | warning (_("bug: psymtab for %s is already read in."), |
5220 | pst->filename); | |
c906108c SS |
5221 | } |
5222 | else | |
5223 | { | |
5224 | if (info_verbose) | |
5225 | { | |
3e43a32a MS |
5226 | printf_filtered (_("Reading in symbols for %s..."), |
5227 | pst->filename); | |
c906108c SS |
5228 | gdb_flush (gdb_stdout); |
5229 | } | |
5230 | ||
10b3939b DJ |
5231 | /* Restore our global data. */ |
5232 | dwarf2_per_objfile = objfile_data (pst->objfile, | |
5233 | dwarf2_objfile_data_key); | |
5234 | ||
b2ab525c KB |
5235 | /* If this psymtab is constructed from a debug-only objfile, the |
5236 | has_section_at_zero flag will not necessarily be correct. We | |
5237 | can get the correct value for this flag by looking at the data | |
5238 | associated with the (presumably stripped) associated objfile. */ | |
5239 | if (pst->objfile->separate_debug_objfile_backlink) | |
5240 | { | |
5241 | struct dwarf2_per_objfile *dpo_backlink | |
5242 | = objfile_data (pst->objfile->separate_debug_objfile_backlink, | |
5243 | dwarf2_objfile_data_key); | |
9a619af0 | 5244 | |
b2ab525c KB |
5245 | dwarf2_per_objfile->has_section_at_zero |
5246 | = dpo_backlink->has_section_at_zero; | |
5247 | } | |
5248 | ||
98bfdba5 PA |
5249 | dwarf2_per_objfile->reading_partial_symbols = 0; |
5250 | ||
c906108c SS |
5251 | psymtab_to_symtab_1 (pst); |
5252 | ||
5253 | /* Finish up the debug error message. */ | |
5254 | if (info_verbose) | |
a3f17187 | 5255 | printf_filtered (_("done.\n")); |
c906108c SS |
5256 | } |
5257 | } | |
95554aad TT |
5258 | |
5259 | process_cu_includes (); | |
c906108c | 5260 | } |
9cdd5dbd DE |
5261 | \f |
5262 | /* Reading in full CUs. */ | |
c906108c | 5263 | |
10b3939b DJ |
5264 | /* Add PER_CU to the queue. */ |
5265 | ||
5266 | static void | |
95554aad TT |
5267 | queue_comp_unit (struct dwarf2_per_cu_data *per_cu, |
5268 | enum language pretend_language) | |
10b3939b DJ |
5269 | { |
5270 | struct dwarf2_queue_item *item; | |
5271 | ||
5272 | per_cu->queued = 1; | |
5273 | item = xmalloc (sizeof (*item)); | |
5274 | item->per_cu = per_cu; | |
95554aad | 5275 | item->pretend_language = pretend_language; |
10b3939b DJ |
5276 | item->next = NULL; |
5277 | ||
5278 | if (dwarf2_queue == NULL) | |
5279 | dwarf2_queue = item; | |
5280 | else | |
5281 | dwarf2_queue_tail->next = item; | |
5282 | ||
5283 | dwarf2_queue_tail = item; | |
5284 | } | |
5285 | ||
5286 | /* Process the queue. */ | |
5287 | ||
5288 | static void | |
a0f42c21 | 5289 | process_queue (void) |
10b3939b DJ |
5290 | { |
5291 | struct dwarf2_queue_item *item, *next_item; | |
5292 | ||
03dd20cc DJ |
5293 | /* The queue starts out with one item, but following a DIE reference |
5294 | may load a new CU, adding it to the end of the queue. */ | |
10b3939b DJ |
5295 | for (item = dwarf2_queue; item != NULL; dwarf2_queue = item = next_item) |
5296 | { | |
9291a0cd TT |
5297 | if (dwarf2_per_objfile->using_index |
5298 | ? !item->per_cu->v.quick->symtab | |
5299 | : (item->per_cu->v.psymtab && !item->per_cu->v.psymtab->readin)) | |
95554aad | 5300 | process_full_comp_unit (item->per_cu, item->pretend_language); |
10b3939b DJ |
5301 | |
5302 | item->per_cu->queued = 0; | |
5303 | next_item = item->next; | |
5304 | xfree (item); | |
5305 | } | |
5306 | ||
5307 | dwarf2_queue_tail = NULL; | |
5308 | } | |
5309 | ||
5310 | /* Free all allocated queue entries. This function only releases anything if | |
5311 | an error was thrown; if the queue was processed then it would have been | |
5312 | freed as we went along. */ | |
5313 | ||
5314 | static void | |
5315 | dwarf2_release_queue (void *dummy) | |
5316 | { | |
5317 | struct dwarf2_queue_item *item, *last; | |
5318 | ||
5319 | item = dwarf2_queue; | |
5320 | while (item) | |
5321 | { | |
5322 | /* Anything still marked queued is likely to be in an | |
5323 | inconsistent state, so discard it. */ | |
5324 | if (item->per_cu->queued) | |
5325 | { | |
5326 | if (item->per_cu->cu != NULL) | |
dee91e82 | 5327 | free_one_cached_comp_unit (item->per_cu); |
10b3939b DJ |
5328 | item->per_cu->queued = 0; |
5329 | } | |
5330 | ||
5331 | last = item; | |
5332 | item = item->next; | |
5333 | xfree (last); | |
5334 | } | |
5335 | ||
5336 | dwarf2_queue = dwarf2_queue_tail = NULL; | |
5337 | } | |
5338 | ||
5339 | /* Read in full symbols for PST, and anything it depends on. */ | |
5340 | ||
c906108c | 5341 | static void |
fba45db2 | 5342 | psymtab_to_symtab_1 (struct partial_symtab *pst) |
c906108c | 5343 | { |
10b3939b | 5344 | struct dwarf2_per_cu_data *per_cu; |
aaa75496 JB |
5345 | int i; |
5346 | ||
95554aad TT |
5347 | if (pst->readin) |
5348 | return; | |
5349 | ||
aaa75496 | 5350 | for (i = 0; i < pst->number_of_dependencies; i++) |
95554aad TT |
5351 | if (!pst->dependencies[i]->readin |
5352 | && pst->dependencies[i]->user == NULL) | |
aaa75496 JB |
5353 | { |
5354 | /* Inform about additional files that need to be read in. */ | |
5355 | if (info_verbose) | |
5356 | { | |
a3f17187 | 5357 | /* FIXME: i18n: Need to make this a single string. */ |
aaa75496 JB |
5358 | fputs_filtered (" ", gdb_stdout); |
5359 | wrap_here (""); | |
5360 | fputs_filtered ("and ", gdb_stdout); | |
5361 | wrap_here (""); | |
5362 | printf_filtered ("%s...", pst->dependencies[i]->filename); | |
0963b4bd | 5363 | wrap_here (""); /* Flush output. */ |
aaa75496 JB |
5364 | gdb_flush (gdb_stdout); |
5365 | } | |
5366 | psymtab_to_symtab_1 (pst->dependencies[i]); | |
5367 | } | |
5368 | ||
e38df1d0 | 5369 | per_cu = pst->read_symtab_private; |
10b3939b DJ |
5370 | |
5371 | if (per_cu == NULL) | |
aaa75496 JB |
5372 | { |
5373 | /* It's an include file, no symbols to read for it. | |
5374 | Everything is in the parent symtab. */ | |
5375 | pst->readin = 1; | |
5376 | return; | |
5377 | } | |
c906108c | 5378 | |
a0f42c21 | 5379 | dw2_do_instantiate_symtab (per_cu); |
10b3939b DJ |
5380 | } |
5381 | ||
dee91e82 DE |
5382 | /* Trivial hash function for die_info: the hash value of a DIE |
5383 | is its offset in .debug_info for this objfile. */ | |
10b3939b | 5384 | |
dee91e82 DE |
5385 | static hashval_t |
5386 | die_hash (const void *item) | |
10b3939b | 5387 | { |
dee91e82 | 5388 | const struct die_info *die = item; |
6502dd73 | 5389 | |
dee91e82 DE |
5390 | return die->offset.sect_off; |
5391 | } | |
63d06c5c | 5392 | |
dee91e82 DE |
5393 | /* Trivial comparison function for die_info structures: two DIEs |
5394 | are equal if they have the same offset. */ | |
98bfdba5 | 5395 | |
dee91e82 DE |
5396 | static int |
5397 | die_eq (const void *item_lhs, const void *item_rhs) | |
5398 | { | |
5399 | const struct die_info *die_lhs = item_lhs; | |
5400 | const struct die_info *die_rhs = item_rhs; | |
c906108c | 5401 | |
dee91e82 DE |
5402 | return die_lhs->offset.sect_off == die_rhs->offset.sect_off; |
5403 | } | |
c906108c | 5404 | |
dee91e82 DE |
5405 | /* die_reader_func for load_full_comp_unit. |
5406 | This is identical to read_signatured_type_reader, | |
5407 | but is kept separate for now. */ | |
c906108c | 5408 | |
dee91e82 DE |
5409 | static void |
5410 | load_full_comp_unit_reader (const struct die_reader_specs *reader, | |
5411 | gdb_byte *info_ptr, | |
5412 | struct die_info *comp_unit_die, | |
5413 | int has_children, | |
5414 | void *data) | |
5415 | { | |
5416 | struct dwarf2_cu *cu = reader->cu; | |
95554aad | 5417 | enum language *language_ptr = data; |
6caca83c | 5418 | |
dee91e82 DE |
5419 | gdb_assert (cu->die_hash == NULL); |
5420 | cu->die_hash = | |
5421 | htab_create_alloc_ex (cu->header.length / 12, | |
5422 | die_hash, | |
5423 | die_eq, | |
5424 | NULL, | |
5425 | &cu->comp_unit_obstack, | |
5426 | hashtab_obstack_allocate, | |
5427 | dummy_obstack_deallocate); | |
e142c38c | 5428 | |
dee91e82 DE |
5429 | if (has_children) |
5430 | comp_unit_die->child = read_die_and_siblings (reader, info_ptr, | |
5431 | &info_ptr, comp_unit_die); | |
5432 | cu->dies = comp_unit_die; | |
5433 | /* comp_unit_die is not stored in die_hash, no need. */ | |
10b3939b DJ |
5434 | |
5435 | /* We try not to read any attributes in this function, because not | |
9cdd5dbd | 5436 | all CUs needed for references have been loaded yet, and symbol |
10b3939b | 5437 | table processing isn't initialized. But we have to set the CU language, |
dee91e82 DE |
5438 | or we won't be able to build types correctly. |
5439 | Similarly, if we do not read the producer, we can not apply | |
5440 | producer-specific interpretation. */ | |
95554aad | 5441 | prepare_one_comp_unit (cu, cu->dies, *language_ptr); |
dee91e82 | 5442 | } |
10b3939b | 5443 | |
dee91e82 | 5444 | /* Load the DIEs associated with PER_CU into memory. */ |
a6c727b2 | 5445 | |
dee91e82 | 5446 | static void |
95554aad TT |
5447 | load_full_comp_unit (struct dwarf2_per_cu_data *this_cu, |
5448 | enum language pretend_language) | |
dee91e82 | 5449 | { |
3019eac3 | 5450 | gdb_assert (! this_cu->is_debug_types); |
c5b7e1cb | 5451 | |
95554aad TT |
5452 | init_cutu_and_read_dies (this_cu, 1, 1, load_full_comp_unit_reader, |
5453 | &pretend_language); | |
10b3939b DJ |
5454 | } |
5455 | ||
3da10d80 KS |
5456 | /* Add a DIE to the delayed physname list. */ |
5457 | ||
5458 | static void | |
5459 | add_to_method_list (struct type *type, int fnfield_index, int index, | |
5460 | const char *name, struct die_info *die, | |
5461 | struct dwarf2_cu *cu) | |
5462 | { | |
5463 | struct delayed_method_info mi; | |
5464 | mi.type = type; | |
5465 | mi.fnfield_index = fnfield_index; | |
5466 | mi.index = index; | |
5467 | mi.name = name; | |
5468 | mi.die = die; | |
5469 | VEC_safe_push (delayed_method_info, cu->method_list, &mi); | |
5470 | } | |
5471 | ||
5472 | /* A cleanup for freeing the delayed method list. */ | |
5473 | ||
5474 | static void | |
5475 | free_delayed_list (void *ptr) | |
5476 | { | |
5477 | struct dwarf2_cu *cu = (struct dwarf2_cu *) ptr; | |
5478 | if (cu->method_list != NULL) | |
5479 | { | |
5480 | VEC_free (delayed_method_info, cu->method_list); | |
5481 | cu->method_list = NULL; | |
5482 | } | |
5483 | } | |
5484 | ||
5485 | /* Compute the physnames of any methods on the CU's method list. | |
5486 | ||
5487 | The computation of method physnames is delayed in order to avoid the | |
5488 | (bad) condition that one of the method's formal parameters is of an as yet | |
5489 | incomplete type. */ | |
5490 | ||
5491 | static void | |
5492 | compute_delayed_physnames (struct dwarf2_cu *cu) | |
5493 | { | |
5494 | int i; | |
5495 | struct delayed_method_info *mi; | |
5496 | for (i = 0; VEC_iterate (delayed_method_info, cu->method_list, i, mi) ; ++i) | |
5497 | { | |
1d06ead6 | 5498 | const char *physname; |
3da10d80 KS |
5499 | struct fn_fieldlist *fn_flp |
5500 | = &TYPE_FN_FIELDLIST (mi->type, mi->fnfield_index); | |
1d06ead6 | 5501 | physname = dwarf2_physname ((char *) mi->name, mi->die, cu); |
3da10d80 KS |
5502 | fn_flp->fn_fields[mi->index].physname = physname ? physname : ""; |
5503 | } | |
5504 | } | |
5505 | ||
a766d390 DE |
5506 | /* Go objects should be embedded in a DW_TAG_module DIE, |
5507 | and it's not clear if/how imported objects will appear. | |
5508 | To keep Go support simple until that's worked out, | |
5509 | go back through what we've read and create something usable. | |
5510 | We could do this while processing each DIE, and feels kinda cleaner, | |
5511 | but that way is more invasive. | |
5512 | This is to, for example, allow the user to type "p var" or "b main" | |
5513 | without having to specify the package name, and allow lookups | |
5514 | of module.object to work in contexts that use the expression | |
5515 | parser. */ | |
5516 | ||
5517 | static void | |
5518 | fixup_go_packaging (struct dwarf2_cu *cu) | |
5519 | { | |
5520 | char *package_name = NULL; | |
5521 | struct pending *list; | |
5522 | int i; | |
5523 | ||
5524 | for (list = global_symbols; list != NULL; list = list->next) | |
5525 | { | |
5526 | for (i = 0; i < list->nsyms; ++i) | |
5527 | { | |
5528 | struct symbol *sym = list->symbol[i]; | |
5529 | ||
5530 | if (SYMBOL_LANGUAGE (sym) == language_go | |
5531 | && SYMBOL_CLASS (sym) == LOC_BLOCK) | |
5532 | { | |
5533 | char *this_package_name = go_symbol_package_name (sym); | |
5534 | ||
5535 | if (this_package_name == NULL) | |
5536 | continue; | |
5537 | if (package_name == NULL) | |
5538 | package_name = this_package_name; | |
5539 | else | |
5540 | { | |
5541 | if (strcmp (package_name, this_package_name) != 0) | |
5542 | complaint (&symfile_complaints, | |
5543 | _("Symtab %s has objects from two different Go packages: %s and %s"), | |
5544 | (sym->symtab && sym->symtab->filename | |
5545 | ? sym->symtab->filename | |
5546 | : cu->objfile->name), | |
5547 | this_package_name, package_name); | |
5548 | xfree (this_package_name); | |
5549 | } | |
5550 | } | |
5551 | } | |
5552 | } | |
5553 | ||
5554 | if (package_name != NULL) | |
5555 | { | |
5556 | struct objfile *objfile = cu->objfile; | |
5557 | struct type *type = init_type (TYPE_CODE_MODULE, 0, 0, | |
5558 | package_name, objfile); | |
5559 | struct symbol *sym; | |
5560 | ||
5561 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
5562 | ||
5563 | sym = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct symbol); | |
5564 | SYMBOL_SET_LANGUAGE (sym, language_go); | |
5565 | SYMBOL_SET_NAMES (sym, package_name, strlen (package_name), 1, objfile); | |
5566 | /* This is not VAR_DOMAIN because we want a way to ensure a lookup of, | |
5567 | e.g., "main" finds the "main" module and not C's main(). */ | |
5568 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; | |
5569 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
5570 | SYMBOL_TYPE (sym) = type; | |
5571 | ||
5572 | add_symbol_to_list (sym, &global_symbols); | |
5573 | ||
5574 | xfree (package_name); | |
5575 | } | |
5576 | } | |
5577 | ||
95554aad TT |
5578 | static void compute_symtab_includes (struct dwarf2_per_cu_data *per_cu); |
5579 | ||
5580 | /* Return the symtab for PER_CU. This works properly regardless of | |
5581 | whether we're using the index or psymtabs. */ | |
5582 | ||
5583 | static struct symtab * | |
5584 | get_symtab (struct dwarf2_per_cu_data *per_cu) | |
5585 | { | |
5586 | return (dwarf2_per_objfile->using_index | |
5587 | ? per_cu->v.quick->symtab | |
5588 | : per_cu->v.psymtab->symtab); | |
5589 | } | |
5590 | ||
5591 | /* A helper function for computing the list of all symbol tables | |
5592 | included by PER_CU. */ | |
5593 | ||
5594 | static void | |
5595 | recursively_compute_inclusions (VEC (dwarf2_per_cu_ptr) **result, | |
5596 | htab_t all_children, | |
5597 | struct dwarf2_per_cu_data *per_cu) | |
5598 | { | |
5599 | void **slot; | |
5600 | int ix; | |
5601 | struct dwarf2_per_cu_data *iter; | |
5602 | ||
5603 | slot = htab_find_slot (all_children, per_cu, INSERT); | |
5604 | if (*slot != NULL) | |
5605 | { | |
5606 | /* This inclusion and its children have been processed. */ | |
5607 | return; | |
5608 | } | |
5609 | ||
5610 | *slot = per_cu; | |
5611 | /* Only add a CU if it has a symbol table. */ | |
5612 | if (get_symtab (per_cu) != NULL) | |
5613 | VEC_safe_push (dwarf2_per_cu_ptr, *result, per_cu); | |
5614 | ||
5615 | for (ix = 0; | |
5616 | VEC_iterate (dwarf2_per_cu_ptr, per_cu->imported_symtabs, ix, iter); | |
5617 | ++ix) | |
5618 | recursively_compute_inclusions (result, all_children, iter); | |
5619 | } | |
5620 | ||
5621 | /* Compute the symtab 'includes' fields for the symtab related to | |
5622 | PER_CU. */ | |
5623 | ||
5624 | static void | |
5625 | compute_symtab_includes (struct dwarf2_per_cu_data *per_cu) | |
5626 | { | |
5627 | if (!VEC_empty (dwarf2_per_cu_ptr, per_cu->imported_symtabs)) | |
5628 | { | |
5629 | int ix, len; | |
5630 | struct dwarf2_per_cu_data *iter; | |
5631 | VEC (dwarf2_per_cu_ptr) *result_children = NULL; | |
5632 | htab_t all_children; | |
5633 | struct symtab *symtab = get_symtab (per_cu); | |
5634 | ||
5635 | /* If we don't have a symtab, we can just skip this case. */ | |
5636 | if (symtab == NULL) | |
5637 | return; | |
5638 | ||
5639 | all_children = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, | |
5640 | NULL, xcalloc, xfree); | |
5641 | ||
5642 | for (ix = 0; | |
5643 | VEC_iterate (dwarf2_per_cu_ptr, per_cu->imported_symtabs, | |
5644 | ix, iter); | |
5645 | ++ix) | |
5646 | recursively_compute_inclusions (&result_children, all_children, iter); | |
5647 | ||
5648 | /* Now we have a transitive closure of all the included CUs, so | |
5649 | we can convert it to a list of symtabs. */ | |
5650 | len = VEC_length (dwarf2_per_cu_ptr, result_children); | |
5651 | symtab->includes | |
5652 | = obstack_alloc (&dwarf2_per_objfile->objfile->objfile_obstack, | |
5653 | (len + 1) * sizeof (struct symtab *)); | |
5654 | for (ix = 0; | |
5655 | VEC_iterate (dwarf2_per_cu_ptr, result_children, ix, iter); | |
5656 | ++ix) | |
5657 | symtab->includes[ix] = get_symtab (iter); | |
5658 | symtab->includes[len] = NULL; | |
5659 | ||
5660 | VEC_free (dwarf2_per_cu_ptr, result_children); | |
5661 | htab_delete (all_children); | |
5662 | } | |
5663 | } | |
5664 | ||
5665 | /* Compute the 'includes' field for the symtabs of all the CUs we just | |
5666 | read. */ | |
5667 | ||
5668 | static void | |
5669 | process_cu_includes (void) | |
5670 | { | |
5671 | int ix; | |
5672 | struct dwarf2_per_cu_data *iter; | |
5673 | ||
5674 | for (ix = 0; | |
5675 | VEC_iterate (dwarf2_per_cu_ptr, dwarf2_per_objfile->just_read_cus, | |
5676 | ix, iter); | |
5677 | ++ix) | |
5678 | compute_symtab_includes (iter); | |
5679 | ||
5680 | VEC_free (dwarf2_per_cu_ptr, dwarf2_per_objfile->just_read_cus); | |
5681 | } | |
5682 | ||
9cdd5dbd | 5683 | /* Generate full symbol information for PER_CU, whose DIEs have |
10b3939b DJ |
5684 | already been loaded into memory. */ |
5685 | ||
5686 | static void | |
95554aad TT |
5687 | process_full_comp_unit (struct dwarf2_per_cu_data *per_cu, |
5688 | enum language pretend_language) | |
10b3939b | 5689 | { |
10b3939b | 5690 | struct dwarf2_cu *cu = per_cu->cu; |
9291a0cd | 5691 | struct objfile *objfile = per_cu->objfile; |
10b3939b DJ |
5692 | CORE_ADDR lowpc, highpc; |
5693 | struct symtab *symtab; | |
3da10d80 | 5694 | struct cleanup *back_to, *delayed_list_cleanup; |
10b3939b DJ |
5695 | CORE_ADDR baseaddr; |
5696 | ||
5697 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
5698 | ||
10b3939b DJ |
5699 | buildsym_init (); |
5700 | back_to = make_cleanup (really_free_pendings, NULL); | |
3da10d80 | 5701 | delayed_list_cleanup = make_cleanup (free_delayed_list, cu); |
10b3939b DJ |
5702 | |
5703 | cu->list_in_scope = &file_symbols; | |
c906108c | 5704 | |
95554aad TT |
5705 | cu->language = pretend_language; |
5706 | cu->language_defn = language_def (cu->language); | |
5707 | ||
c906108c | 5708 | /* Do line number decoding in read_file_scope () */ |
10b3939b | 5709 | process_die (cu->dies, cu); |
c906108c | 5710 | |
a766d390 DE |
5711 | /* For now fudge the Go package. */ |
5712 | if (cu->language == language_go) | |
5713 | fixup_go_packaging (cu); | |
5714 | ||
3da10d80 KS |
5715 | /* Now that we have processed all the DIEs in the CU, all the types |
5716 | should be complete, and it should now be safe to compute all of the | |
5717 | physnames. */ | |
5718 | compute_delayed_physnames (cu); | |
5719 | do_cleanups (delayed_list_cleanup); | |
5720 | ||
fae299cd DC |
5721 | /* Some compilers don't define a DW_AT_high_pc attribute for the |
5722 | compilation unit. If the DW_AT_high_pc is missing, synthesize | |
5723 | it, by scanning the DIE's below the compilation unit. */ | |
10b3939b | 5724 | get_scope_pc_bounds (cu->dies, &lowpc, &highpc, cu); |
c906108c | 5725 | |
613e1657 | 5726 | symtab = end_symtab (highpc + baseaddr, objfile, SECT_OFF_TEXT (objfile)); |
c906108c | 5727 | |
8be455d7 | 5728 | if (symtab != NULL) |
c906108c | 5729 | { |
df15bd07 | 5730 | int gcc_4_minor = producer_is_gcc_ge_4 (cu->producer); |
4632c0d0 | 5731 | |
8be455d7 JK |
5732 | /* Set symtab language to language from DW_AT_language. If the |
5733 | compilation is from a C file generated by language preprocessors, do | |
5734 | not set the language if it was already deduced by start_subfile. */ | |
5735 | if (!(cu->language == language_c && symtab->language != language_c)) | |
5736 | symtab->language = cu->language; | |
5737 | ||
5738 | /* GCC-4.0 has started to support -fvar-tracking. GCC-3.x still can | |
5739 | produce DW_AT_location with location lists but it can be possibly | |
ab260dad JK |
5740 | invalid without -fvar-tracking. Still up to GCC-4.4.x incl. 4.4.0 |
5741 | there were bugs in prologue debug info, fixed later in GCC-4.5 | |
5742 | by "unwind info for epilogues" patch (which is not directly related). | |
8be455d7 JK |
5743 | |
5744 | For -gdwarf-4 type units LOCATIONS_VALID indication is fortunately not | |
5745 | needed, it would be wrong due to missing DW_AT_producer there. | |
5746 | ||
5747 | Still one can confuse GDB by using non-standard GCC compilation | |
5748 | options - this waits on GCC PR other/32998 (-frecord-gcc-switches). | |
5749 | */ | |
ab260dad | 5750 | if (cu->has_loclist && gcc_4_minor >= 5) |
8be455d7 | 5751 | symtab->locations_valid = 1; |
e0d00bc7 JK |
5752 | |
5753 | if (gcc_4_minor >= 5) | |
5754 | symtab->epilogue_unwind_valid = 1; | |
96408a79 SA |
5755 | |
5756 | symtab->call_site_htab = cu->call_site_htab; | |
c906108c | 5757 | } |
9291a0cd TT |
5758 | |
5759 | if (dwarf2_per_objfile->using_index) | |
5760 | per_cu->v.quick->symtab = symtab; | |
5761 | else | |
5762 | { | |
5763 | struct partial_symtab *pst = per_cu->v.psymtab; | |
5764 | pst->symtab = symtab; | |
5765 | pst->readin = 1; | |
5766 | } | |
c906108c | 5767 | |
95554aad TT |
5768 | /* Push it for inclusion processing later. */ |
5769 | VEC_safe_push (dwarf2_per_cu_ptr, dwarf2_per_objfile->just_read_cus, per_cu); | |
5770 | ||
c906108c SS |
5771 | do_cleanups (back_to); |
5772 | } | |
5773 | ||
95554aad TT |
5774 | /* Process an imported unit DIE. */ |
5775 | ||
5776 | static void | |
5777 | process_imported_unit_die (struct die_info *die, struct dwarf2_cu *cu) | |
5778 | { | |
5779 | struct attribute *attr; | |
5780 | ||
5781 | attr = dwarf2_attr (die, DW_AT_import, cu); | |
5782 | if (attr != NULL) | |
5783 | { | |
5784 | struct dwarf2_per_cu_data *per_cu; | |
5785 | struct symtab *imported_symtab; | |
5786 | sect_offset offset; | |
5787 | ||
5788 | offset = dwarf2_get_ref_die_offset (attr); | |
5789 | per_cu = dwarf2_find_containing_comp_unit (offset, cu->objfile); | |
5790 | ||
5791 | /* Queue the unit, if needed. */ | |
5792 | if (maybe_queue_comp_unit (cu, per_cu, cu->language)) | |
5793 | load_full_comp_unit (per_cu, cu->language); | |
5794 | ||
5795 | VEC_safe_push (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs, | |
5796 | per_cu); | |
5797 | } | |
5798 | } | |
5799 | ||
c906108c SS |
5800 | /* Process a die and its children. */ |
5801 | ||
5802 | static void | |
e7c27a73 | 5803 | process_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
5804 | { |
5805 | switch (die->tag) | |
5806 | { | |
5807 | case DW_TAG_padding: | |
5808 | break; | |
5809 | case DW_TAG_compile_unit: | |
95554aad | 5810 | case DW_TAG_partial_unit: |
e7c27a73 | 5811 | read_file_scope (die, cu); |
c906108c | 5812 | break; |
348e048f DE |
5813 | case DW_TAG_type_unit: |
5814 | read_type_unit_scope (die, cu); | |
5815 | break; | |
c906108c | 5816 | case DW_TAG_subprogram: |
c906108c | 5817 | case DW_TAG_inlined_subroutine: |
edb3359d | 5818 | read_func_scope (die, cu); |
c906108c SS |
5819 | break; |
5820 | case DW_TAG_lexical_block: | |
14898363 L |
5821 | case DW_TAG_try_block: |
5822 | case DW_TAG_catch_block: | |
e7c27a73 | 5823 | read_lexical_block_scope (die, cu); |
c906108c | 5824 | break; |
96408a79 SA |
5825 | case DW_TAG_GNU_call_site: |
5826 | read_call_site_scope (die, cu); | |
5827 | break; | |
c906108c | 5828 | case DW_TAG_class_type: |
680b30c7 | 5829 | case DW_TAG_interface_type: |
c906108c SS |
5830 | case DW_TAG_structure_type: |
5831 | case DW_TAG_union_type: | |
134d01f1 | 5832 | process_structure_scope (die, cu); |
c906108c SS |
5833 | break; |
5834 | case DW_TAG_enumeration_type: | |
134d01f1 | 5835 | process_enumeration_scope (die, cu); |
c906108c | 5836 | break; |
134d01f1 | 5837 | |
f792889a DJ |
5838 | /* These dies have a type, but processing them does not create |
5839 | a symbol or recurse to process the children. Therefore we can | |
5840 | read them on-demand through read_type_die. */ | |
c906108c | 5841 | case DW_TAG_subroutine_type: |
72019c9c | 5842 | case DW_TAG_set_type: |
c906108c | 5843 | case DW_TAG_array_type: |
c906108c | 5844 | case DW_TAG_pointer_type: |
c906108c | 5845 | case DW_TAG_ptr_to_member_type: |
c906108c | 5846 | case DW_TAG_reference_type: |
c906108c | 5847 | case DW_TAG_string_type: |
c906108c | 5848 | break; |
134d01f1 | 5849 | |
c906108c | 5850 | case DW_TAG_base_type: |
a02abb62 | 5851 | case DW_TAG_subrange_type: |
cb249c71 | 5852 | case DW_TAG_typedef: |
134d01f1 DJ |
5853 | /* Add a typedef symbol for the type definition, if it has a |
5854 | DW_AT_name. */ | |
f792889a | 5855 | new_symbol (die, read_type_die (die, cu), cu); |
a02abb62 | 5856 | break; |
c906108c | 5857 | case DW_TAG_common_block: |
e7c27a73 | 5858 | read_common_block (die, cu); |
c906108c SS |
5859 | break; |
5860 | case DW_TAG_common_inclusion: | |
5861 | break; | |
d9fa45fe | 5862 | case DW_TAG_namespace: |
63d06c5c | 5863 | processing_has_namespace_info = 1; |
e7c27a73 | 5864 | read_namespace (die, cu); |
d9fa45fe | 5865 | break; |
5d7cb8df | 5866 | case DW_TAG_module: |
f55ee35c | 5867 | processing_has_namespace_info = 1; |
5d7cb8df JK |
5868 | read_module (die, cu); |
5869 | break; | |
d9fa45fe DC |
5870 | case DW_TAG_imported_declaration: |
5871 | case DW_TAG_imported_module: | |
63d06c5c | 5872 | processing_has_namespace_info = 1; |
27aa8d6a SW |
5873 | if (die->child != NULL && (die->tag == DW_TAG_imported_declaration |
5874 | || cu->language != language_fortran)) | |
5875 | complaint (&symfile_complaints, _("Tag '%s' has unexpected children"), | |
5876 | dwarf_tag_name (die->tag)); | |
5877 | read_import_statement (die, cu); | |
d9fa45fe | 5878 | break; |
95554aad TT |
5879 | |
5880 | case DW_TAG_imported_unit: | |
5881 | process_imported_unit_die (die, cu); | |
5882 | break; | |
5883 | ||
c906108c | 5884 | default: |
e7c27a73 | 5885 | new_symbol (die, NULL, cu); |
c906108c SS |
5886 | break; |
5887 | } | |
5888 | } | |
5889 | ||
94af9270 KS |
5890 | /* A helper function for dwarf2_compute_name which determines whether DIE |
5891 | needs to have the name of the scope prepended to the name listed in the | |
5892 | die. */ | |
5893 | ||
5894 | static int | |
5895 | die_needs_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
5896 | { | |
1c809c68 TT |
5897 | struct attribute *attr; |
5898 | ||
94af9270 KS |
5899 | switch (die->tag) |
5900 | { | |
5901 | case DW_TAG_namespace: | |
5902 | case DW_TAG_typedef: | |
5903 | case DW_TAG_class_type: | |
5904 | case DW_TAG_interface_type: | |
5905 | case DW_TAG_structure_type: | |
5906 | case DW_TAG_union_type: | |
5907 | case DW_TAG_enumeration_type: | |
5908 | case DW_TAG_enumerator: | |
5909 | case DW_TAG_subprogram: | |
5910 | case DW_TAG_member: | |
5911 | return 1; | |
5912 | ||
5913 | case DW_TAG_variable: | |
c2b0a229 | 5914 | case DW_TAG_constant: |
94af9270 KS |
5915 | /* We only need to prefix "globally" visible variables. These include |
5916 | any variable marked with DW_AT_external or any variable that | |
5917 | lives in a namespace. [Variables in anonymous namespaces | |
5918 | require prefixing, but they are not DW_AT_external.] */ | |
5919 | ||
5920 | if (dwarf2_attr (die, DW_AT_specification, cu)) | |
5921 | { | |
5922 | struct dwarf2_cu *spec_cu = cu; | |
9a619af0 | 5923 | |
94af9270 KS |
5924 | return die_needs_namespace (die_specification (die, &spec_cu), |
5925 | spec_cu); | |
5926 | } | |
5927 | ||
1c809c68 | 5928 | attr = dwarf2_attr (die, DW_AT_external, cu); |
f55ee35c JK |
5929 | if (attr == NULL && die->parent->tag != DW_TAG_namespace |
5930 | && die->parent->tag != DW_TAG_module) | |
1c809c68 TT |
5931 | return 0; |
5932 | /* A variable in a lexical block of some kind does not need a | |
5933 | namespace, even though in C++ such variables may be external | |
5934 | and have a mangled name. */ | |
5935 | if (die->parent->tag == DW_TAG_lexical_block | |
5936 | || die->parent->tag == DW_TAG_try_block | |
1054b214 TT |
5937 | || die->parent->tag == DW_TAG_catch_block |
5938 | || die->parent->tag == DW_TAG_subprogram) | |
1c809c68 TT |
5939 | return 0; |
5940 | return 1; | |
94af9270 KS |
5941 | |
5942 | default: | |
5943 | return 0; | |
5944 | } | |
5945 | } | |
5946 | ||
98bfdba5 PA |
5947 | /* Retrieve the last character from a mem_file. */ |
5948 | ||
5949 | static void | |
5950 | do_ui_file_peek_last (void *object, const char *buffer, long length) | |
5951 | { | |
5952 | char *last_char_p = (char *) object; | |
5953 | ||
5954 | if (length > 0) | |
5955 | *last_char_p = buffer[length - 1]; | |
5956 | } | |
5957 | ||
94af9270 | 5958 | /* Compute the fully qualified name of DIE in CU. If PHYSNAME is nonzero, |
a766d390 DE |
5959 | compute the physname for the object, which include a method's: |
5960 | - formal parameters (C++/Java), | |
5961 | - receiver type (Go), | |
5962 | - return type (Java). | |
5963 | ||
5964 | The term "physname" is a bit confusing. | |
5965 | For C++, for example, it is the demangled name. | |
5966 | For Go, for example, it's the mangled name. | |
94af9270 | 5967 | |
af6b7be1 JB |
5968 | For Ada, return the DIE's linkage name rather than the fully qualified |
5969 | name. PHYSNAME is ignored.. | |
5970 | ||
94af9270 KS |
5971 | The result is allocated on the objfile_obstack and canonicalized. */ |
5972 | ||
5973 | static const char * | |
5974 | dwarf2_compute_name (char *name, struct die_info *die, struct dwarf2_cu *cu, | |
5975 | int physname) | |
5976 | { | |
bb5ed363 DE |
5977 | struct objfile *objfile = cu->objfile; |
5978 | ||
94af9270 KS |
5979 | if (name == NULL) |
5980 | name = dwarf2_name (die, cu); | |
5981 | ||
f55ee35c JK |
5982 | /* For Fortran GDB prefers DW_AT_*linkage_name if present but otherwise |
5983 | compute it by typename_concat inside GDB. */ | |
5984 | if (cu->language == language_ada | |
5985 | || (cu->language == language_fortran && physname)) | |
5986 | { | |
5987 | /* For Ada unit, we prefer the linkage name over the name, as | |
5988 | the former contains the exported name, which the user expects | |
5989 | to be able to reference. Ideally, we want the user to be able | |
5990 | to reference this entity using either natural or linkage name, | |
5991 | but we haven't started looking at this enhancement yet. */ | |
5992 | struct attribute *attr; | |
5993 | ||
5994 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
5995 | if (attr == NULL) | |
5996 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
5997 | if (attr && DW_STRING (attr)) | |
5998 | return DW_STRING (attr); | |
5999 | } | |
6000 | ||
94af9270 KS |
6001 | /* These are the only languages we know how to qualify names in. */ |
6002 | if (name != NULL | |
f55ee35c JK |
6003 | && (cu->language == language_cplus || cu->language == language_java |
6004 | || cu->language == language_fortran)) | |
94af9270 KS |
6005 | { |
6006 | if (die_needs_namespace (die, cu)) | |
6007 | { | |
6008 | long length; | |
0d5cff50 | 6009 | const char *prefix; |
94af9270 KS |
6010 | struct ui_file *buf; |
6011 | ||
6012 | prefix = determine_prefix (die, cu); | |
6013 | buf = mem_fileopen (); | |
6014 | if (*prefix != '\0') | |
6015 | { | |
f55ee35c JK |
6016 | char *prefixed_name = typename_concat (NULL, prefix, name, |
6017 | physname, cu); | |
9a619af0 | 6018 | |
94af9270 KS |
6019 | fputs_unfiltered (prefixed_name, buf); |
6020 | xfree (prefixed_name); | |
6021 | } | |
6022 | else | |
62d5b8da | 6023 | fputs_unfiltered (name, buf); |
94af9270 | 6024 | |
98bfdba5 PA |
6025 | /* Template parameters may be specified in the DIE's DW_AT_name, or |
6026 | as children with DW_TAG_template_type_param or | |
6027 | DW_TAG_value_type_param. If the latter, add them to the name | |
6028 | here. If the name already has template parameters, then | |
6029 | skip this step; some versions of GCC emit both, and | |
6030 | it is more efficient to use the pre-computed name. | |
6031 | ||
6032 | Something to keep in mind about this process: it is very | |
6033 | unlikely, or in some cases downright impossible, to produce | |
6034 | something that will match the mangled name of a function. | |
6035 | If the definition of the function has the same debug info, | |
6036 | we should be able to match up with it anyway. But fallbacks | |
6037 | using the minimal symbol, for instance to find a method | |
6038 | implemented in a stripped copy of libstdc++, will not work. | |
6039 | If we do not have debug info for the definition, we will have to | |
6040 | match them up some other way. | |
6041 | ||
6042 | When we do name matching there is a related problem with function | |
6043 | templates; two instantiated function templates are allowed to | |
6044 | differ only by their return types, which we do not add here. */ | |
6045 | ||
6046 | if (cu->language == language_cplus && strchr (name, '<') == NULL) | |
6047 | { | |
6048 | struct attribute *attr; | |
6049 | struct die_info *child; | |
6050 | int first = 1; | |
6051 | ||
6052 | die->building_fullname = 1; | |
6053 | ||
6054 | for (child = die->child; child != NULL; child = child->sibling) | |
6055 | { | |
6056 | struct type *type; | |
12df843f | 6057 | LONGEST value; |
98bfdba5 PA |
6058 | gdb_byte *bytes; |
6059 | struct dwarf2_locexpr_baton *baton; | |
6060 | struct value *v; | |
6061 | ||
6062 | if (child->tag != DW_TAG_template_type_param | |
6063 | && child->tag != DW_TAG_template_value_param) | |
6064 | continue; | |
6065 | ||
6066 | if (first) | |
6067 | { | |
6068 | fputs_unfiltered ("<", buf); | |
6069 | first = 0; | |
6070 | } | |
6071 | else | |
6072 | fputs_unfiltered (", ", buf); | |
6073 | ||
6074 | attr = dwarf2_attr (child, DW_AT_type, cu); | |
6075 | if (attr == NULL) | |
6076 | { | |
6077 | complaint (&symfile_complaints, | |
6078 | _("template parameter missing DW_AT_type")); | |
6079 | fputs_unfiltered ("UNKNOWN_TYPE", buf); | |
6080 | continue; | |
6081 | } | |
6082 | type = die_type (child, cu); | |
6083 | ||
6084 | if (child->tag == DW_TAG_template_type_param) | |
6085 | { | |
6086 | c_print_type (type, "", buf, -1, 0); | |
6087 | continue; | |
6088 | } | |
6089 | ||
6090 | attr = dwarf2_attr (child, DW_AT_const_value, cu); | |
6091 | if (attr == NULL) | |
6092 | { | |
6093 | complaint (&symfile_complaints, | |
3e43a32a MS |
6094 | _("template parameter missing " |
6095 | "DW_AT_const_value")); | |
98bfdba5 PA |
6096 | fputs_unfiltered ("UNKNOWN_VALUE", buf); |
6097 | continue; | |
6098 | } | |
6099 | ||
6100 | dwarf2_const_value_attr (attr, type, name, | |
6101 | &cu->comp_unit_obstack, cu, | |
6102 | &value, &bytes, &baton); | |
6103 | ||
6104 | if (TYPE_NOSIGN (type)) | |
6105 | /* GDB prints characters as NUMBER 'CHAR'. If that's | |
6106 | changed, this can use value_print instead. */ | |
6107 | c_printchar (value, type, buf); | |
6108 | else | |
6109 | { | |
6110 | struct value_print_options opts; | |
6111 | ||
6112 | if (baton != NULL) | |
6113 | v = dwarf2_evaluate_loc_desc (type, NULL, | |
6114 | baton->data, | |
6115 | baton->size, | |
6116 | baton->per_cu); | |
6117 | else if (bytes != NULL) | |
6118 | { | |
6119 | v = allocate_value (type); | |
6120 | memcpy (value_contents_writeable (v), bytes, | |
6121 | TYPE_LENGTH (type)); | |
6122 | } | |
6123 | else | |
6124 | v = value_from_longest (type, value); | |
6125 | ||
3e43a32a MS |
6126 | /* Specify decimal so that we do not depend on |
6127 | the radix. */ | |
98bfdba5 PA |
6128 | get_formatted_print_options (&opts, 'd'); |
6129 | opts.raw = 1; | |
6130 | value_print (v, buf, &opts); | |
6131 | release_value (v); | |
6132 | value_free (v); | |
6133 | } | |
6134 | } | |
6135 | ||
6136 | die->building_fullname = 0; | |
6137 | ||
6138 | if (!first) | |
6139 | { | |
6140 | /* Close the argument list, with a space if necessary | |
6141 | (nested templates). */ | |
6142 | char last_char = '\0'; | |
6143 | ui_file_put (buf, do_ui_file_peek_last, &last_char); | |
6144 | if (last_char == '>') | |
6145 | fputs_unfiltered (" >", buf); | |
6146 | else | |
6147 | fputs_unfiltered (">", buf); | |
6148 | } | |
6149 | } | |
6150 | ||
94af9270 KS |
6151 | /* For Java and C++ methods, append formal parameter type |
6152 | information, if PHYSNAME. */ | |
6e70227d | 6153 | |
94af9270 KS |
6154 | if (physname && die->tag == DW_TAG_subprogram |
6155 | && (cu->language == language_cplus | |
6156 | || cu->language == language_java)) | |
6157 | { | |
6158 | struct type *type = read_type_die (die, cu); | |
6159 | ||
3167638f | 6160 | c_type_print_args (type, buf, 1, cu->language); |
94af9270 KS |
6161 | |
6162 | if (cu->language == language_java) | |
6163 | { | |
6164 | /* For java, we must append the return type to method | |
0963b4bd | 6165 | names. */ |
94af9270 KS |
6166 | if (die->tag == DW_TAG_subprogram) |
6167 | java_print_type (TYPE_TARGET_TYPE (type), "", buf, | |
6168 | 0, 0); | |
6169 | } | |
6170 | else if (cu->language == language_cplus) | |
6171 | { | |
60430eff DJ |
6172 | /* Assume that an artificial first parameter is |
6173 | "this", but do not crash if it is not. RealView | |
6174 | marks unnamed (and thus unused) parameters as | |
6175 | artificial; there is no way to differentiate | |
6176 | the two cases. */ | |
94af9270 KS |
6177 | if (TYPE_NFIELDS (type) > 0 |
6178 | && TYPE_FIELD_ARTIFICIAL (type, 0) | |
60430eff | 6179 | && TYPE_CODE (TYPE_FIELD_TYPE (type, 0)) == TYPE_CODE_PTR |
3e43a32a MS |
6180 | && TYPE_CONST (TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, |
6181 | 0)))) | |
94af9270 KS |
6182 | fputs_unfiltered (" const", buf); |
6183 | } | |
6184 | } | |
6185 | ||
bb5ed363 | 6186 | name = ui_file_obsavestring (buf, &objfile->objfile_obstack, |
94af9270 KS |
6187 | &length); |
6188 | ui_file_delete (buf); | |
6189 | ||
6190 | if (cu->language == language_cplus) | |
6191 | { | |
6192 | char *cname | |
6193 | = dwarf2_canonicalize_name (name, cu, | |
bb5ed363 | 6194 | &objfile->objfile_obstack); |
9a619af0 | 6195 | |
94af9270 KS |
6196 | if (cname != NULL) |
6197 | name = cname; | |
6198 | } | |
6199 | } | |
6200 | } | |
6201 | ||
6202 | return name; | |
6203 | } | |
6204 | ||
0114d602 DJ |
6205 | /* Return the fully qualified name of DIE, based on its DW_AT_name. |
6206 | If scope qualifiers are appropriate they will be added. The result | |
6207 | will be allocated on the objfile_obstack, or NULL if the DIE does | |
94af9270 KS |
6208 | not have a name. NAME may either be from a previous call to |
6209 | dwarf2_name or NULL. | |
6210 | ||
0963b4bd | 6211 | The output string will be canonicalized (if C++/Java). */ |
0114d602 DJ |
6212 | |
6213 | static const char * | |
94af9270 | 6214 | dwarf2_full_name (char *name, struct die_info *die, struct dwarf2_cu *cu) |
0114d602 | 6215 | { |
94af9270 KS |
6216 | return dwarf2_compute_name (name, die, cu, 0); |
6217 | } | |
0114d602 | 6218 | |
94af9270 KS |
6219 | /* Construct a physname for the given DIE in CU. NAME may either be |
6220 | from a previous call to dwarf2_name or NULL. The result will be | |
6221 | allocated on the objfile_objstack or NULL if the DIE does not have a | |
6222 | name. | |
0114d602 | 6223 | |
94af9270 | 6224 | The output string will be canonicalized (if C++/Java). */ |
0114d602 | 6225 | |
94af9270 KS |
6226 | static const char * |
6227 | dwarf2_physname (char *name, struct die_info *die, struct dwarf2_cu *cu) | |
6228 | { | |
bb5ed363 | 6229 | struct objfile *objfile = cu->objfile; |
900e11f9 JK |
6230 | struct attribute *attr; |
6231 | const char *retval, *mangled = NULL, *canon = NULL; | |
6232 | struct cleanup *back_to; | |
6233 | int need_copy = 1; | |
6234 | ||
6235 | /* In this case dwarf2_compute_name is just a shortcut not building anything | |
6236 | on its own. */ | |
6237 | if (!die_needs_namespace (die, cu)) | |
6238 | return dwarf2_compute_name (name, die, cu, 1); | |
6239 | ||
6240 | back_to = make_cleanup (null_cleanup, NULL); | |
6241 | ||
6242 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
6243 | if (!attr) | |
6244 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
6245 | ||
6246 | /* DW_AT_linkage_name is missing in some cases - depend on what GDB | |
6247 | has computed. */ | |
6248 | if (attr && DW_STRING (attr)) | |
6249 | { | |
6250 | char *demangled; | |
6251 | ||
6252 | mangled = DW_STRING (attr); | |
6253 | ||
6254 | /* Use DMGL_RET_DROP for C++ template functions to suppress their return | |
6255 | type. It is easier for GDB users to search for such functions as | |
6256 | `name(params)' than `long name(params)'. In such case the minimal | |
6257 | symbol names do not match the full symbol names but for template | |
6258 | functions there is never a need to look up their definition from their | |
6259 | declaration so the only disadvantage remains the minimal symbol | |
6260 | variant `long name(params)' does not have the proper inferior type. | |
6261 | */ | |
6262 | ||
a766d390 DE |
6263 | if (cu->language == language_go) |
6264 | { | |
6265 | /* This is a lie, but we already lie to the caller new_symbol_full. | |
6266 | new_symbol_full assumes we return the mangled name. | |
6267 | This just undoes that lie until things are cleaned up. */ | |
6268 | demangled = NULL; | |
6269 | } | |
6270 | else | |
6271 | { | |
6272 | demangled = cplus_demangle (mangled, | |
6273 | (DMGL_PARAMS | DMGL_ANSI | |
6274 | | (cu->language == language_java | |
6275 | ? DMGL_JAVA | DMGL_RET_POSTFIX | |
6276 | : DMGL_RET_DROP))); | |
6277 | } | |
900e11f9 JK |
6278 | if (demangled) |
6279 | { | |
6280 | make_cleanup (xfree, demangled); | |
6281 | canon = demangled; | |
6282 | } | |
6283 | else | |
6284 | { | |
6285 | canon = mangled; | |
6286 | need_copy = 0; | |
6287 | } | |
6288 | } | |
6289 | ||
6290 | if (canon == NULL || check_physname) | |
6291 | { | |
6292 | const char *physname = dwarf2_compute_name (name, die, cu, 1); | |
6293 | ||
6294 | if (canon != NULL && strcmp (physname, canon) != 0) | |
6295 | { | |
6296 | /* It may not mean a bug in GDB. The compiler could also | |
6297 | compute DW_AT_linkage_name incorrectly. But in such case | |
6298 | GDB would need to be bug-to-bug compatible. */ | |
6299 | ||
6300 | complaint (&symfile_complaints, | |
6301 | _("Computed physname <%s> does not match demangled <%s> " | |
6302 | "(from linkage <%s>) - DIE at 0x%x [in module %s]"), | |
b64f50a1 | 6303 | physname, canon, mangled, die->offset.sect_off, objfile->name); |
900e11f9 JK |
6304 | |
6305 | /* Prefer DW_AT_linkage_name (in the CANON form) - when it | |
6306 | is available here - over computed PHYSNAME. It is safer | |
6307 | against both buggy GDB and buggy compilers. */ | |
6308 | ||
6309 | retval = canon; | |
6310 | } | |
6311 | else | |
6312 | { | |
6313 | retval = physname; | |
6314 | need_copy = 0; | |
6315 | } | |
6316 | } | |
6317 | else | |
6318 | retval = canon; | |
6319 | ||
6320 | if (need_copy) | |
6321 | retval = obsavestring (retval, strlen (retval), | |
bb5ed363 | 6322 | &objfile->objfile_obstack); |
900e11f9 JK |
6323 | |
6324 | do_cleanups (back_to); | |
6325 | return retval; | |
0114d602 DJ |
6326 | } |
6327 | ||
27aa8d6a SW |
6328 | /* Read the import statement specified by the given die and record it. */ |
6329 | ||
6330 | static void | |
6331 | read_import_statement (struct die_info *die, struct dwarf2_cu *cu) | |
6332 | { | |
bb5ed363 | 6333 | struct objfile *objfile = cu->objfile; |
27aa8d6a | 6334 | struct attribute *import_attr; |
32019081 | 6335 | struct die_info *imported_die, *child_die; |
de4affc9 | 6336 | struct dwarf2_cu *imported_cu; |
27aa8d6a | 6337 | const char *imported_name; |
794684b6 | 6338 | const char *imported_name_prefix; |
13387711 SW |
6339 | const char *canonical_name; |
6340 | const char *import_alias; | |
6341 | const char *imported_declaration = NULL; | |
794684b6 | 6342 | const char *import_prefix; |
32019081 JK |
6343 | VEC (const_char_ptr) *excludes = NULL; |
6344 | struct cleanup *cleanups; | |
13387711 SW |
6345 | |
6346 | char *temp; | |
27aa8d6a SW |
6347 | |
6348 | import_attr = dwarf2_attr (die, DW_AT_import, cu); | |
6349 | if (import_attr == NULL) | |
6350 | { | |
6351 | complaint (&symfile_complaints, _("Tag '%s' has no DW_AT_import"), | |
6352 | dwarf_tag_name (die->tag)); | |
6353 | return; | |
6354 | } | |
6355 | ||
de4affc9 CC |
6356 | imported_cu = cu; |
6357 | imported_die = follow_die_ref_or_sig (die, import_attr, &imported_cu); | |
6358 | imported_name = dwarf2_name (imported_die, imported_cu); | |
27aa8d6a SW |
6359 | if (imported_name == NULL) |
6360 | { | |
6361 | /* GCC bug: https://bugzilla.redhat.com/show_bug.cgi?id=506524 | |
6362 | ||
6363 | The import in the following code: | |
6364 | namespace A | |
6365 | { | |
6366 | typedef int B; | |
6367 | } | |
6368 | ||
6369 | int main () | |
6370 | { | |
6371 | using A::B; | |
6372 | B b; | |
6373 | return b; | |
6374 | } | |
6375 | ||
6376 | ... | |
6377 | <2><51>: Abbrev Number: 3 (DW_TAG_imported_declaration) | |
6378 | <52> DW_AT_decl_file : 1 | |
6379 | <53> DW_AT_decl_line : 6 | |
6380 | <54> DW_AT_import : <0x75> | |
6381 | <2><58>: Abbrev Number: 4 (DW_TAG_typedef) | |
6382 | <59> DW_AT_name : B | |
6383 | <5b> DW_AT_decl_file : 1 | |
6384 | <5c> DW_AT_decl_line : 2 | |
6385 | <5d> DW_AT_type : <0x6e> | |
6386 | ... | |
6387 | <1><75>: Abbrev Number: 7 (DW_TAG_base_type) | |
6388 | <76> DW_AT_byte_size : 4 | |
6389 | <77> DW_AT_encoding : 5 (signed) | |
6390 | ||
6391 | imports the wrong die ( 0x75 instead of 0x58 ). | |
6392 | This case will be ignored until the gcc bug is fixed. */ | |
6393 | return; | |
6394 | } | |
6395 | ||
82856980 SW |
6396 | /* Figure out the local name after import. */ |
6397 | import_alias = dwarf2_name (die, cu); | |
27aa8d6a | 6398 | |
794684b6 SW |
6399 | /* Figure out where the statement is being imported to. */ |
6400 | import_prefix = determine_prefix (die, cu); | |
6401 | ||
6402 | /* Figure out what the scope of the imported die is and prepend it | |
6403 | to the name of the imported die. */ | |
de4affc9 | 6404 | imported_name_prefix = determine_prefix (imported_die, imported_cu); |
794684b6 | 6405 | |
f55ee35c JK |
6406 | if (imported_die->tag != DW_TAG_namespace |
6407 | && imported_die->tag != DW_TAG_module) | |
794684b6 | 6408 | { |
13387711 SW |
6409 | imported_declaration = imported_name; |
6410 | canonical_name = imported_name_prefix; | |
794684b6 | 6411 | } |
13387711 | 6412 | else if (strlen (imported_name_prefix) > 0) |
794684b6 | 6413 | { |
13387711 SW |
6414 | temp = alloca (strlen (imported_name_prefix) |
6415 | + 2 + strlen (imported_name) + 1); | |
6416 | strcpy (temp, imported_name_prefix); | |
6417 | strcat (temp, "::"); | |
6418 | strcat (temp, imported_name); | |
6419 | canonical_name = temp; | |
794684b6 | 6420 | } |
13387711 SW |
6421 | else |
6422 | canonical_name = imported_name; | |
794684b6 | 6423 | |
32019081 JK |
6424 | cleanups = make_cleanup (VEC_cleanup (const_char_ptr), &excludes); |
6425 | ||
6426 | if (die->tag == DW_TAG_imported_module && cu->language == language_fortran) | |
6427 | for (child_die = die->child; child_die && child_die->tag; | |
6428 | child_die = sibling_die (child_die)) | |
6429 | { | |
6430 | /* DWARF-4: A Fortran use statement with a “rename list” may be | |
6431 | represented by an imported module entry with an import attribute | |
6432 | referring to the module and owned entries corresponding to those | |
6433 | entities that are renamed as part of being imported. */ | |
6434 | ||
6435 | if (child_die->tag != DW_TAG_imported_declaration) | |
6436 | { | |
6437 | complaint (&symfile_complaints, | |
6438 | _("child DW_TAG_imported_declaration expected " | |
6439 | "- DIE at 0x%x [in module %s]"), | |
b64f50a1 | 6440 | child_die->offset.sect_off, objfile->name); |
32019081 JK |
6441 | continue; |
6442 | } | |
6443 | ||
6444 | import_attr = dwarf2_attr (child_die, DW_AT_import, cu); | |
6445 | if (import_attr == NULL) | |
6446 | { | |
6447 | complaint (&symfile_complaints, _("Tag '%s' has no DW_AT_import"), | |
6448 | dwarf_tag_name (child_die->tag)); | |
6449 | continue; | |
6450 | } | |
6451 | ||
6452 | imported_cu = cu; | |
6453 | imported_die = follow_die_ref_or_sig (child_die, import_attr, | |
6454 | &imported_cu); | |
6455 | imported_name = dwarf2_name (imported_die, imported_cu); | |
6456 | if (imported_name == NULL) | |
6457 | { | |
6458 | complaint (&symfile_complaints, | |
6459 | _("child DW_TAG_imported_declaration has unknown " | |
6460 | "imported name - DIE at 0x%x [in module %s]"), | |
b64f50a1 | 6461 | child_die->offset.sect_off, objfile->name); |
32019081 JK |
6462 | continue; |
6463 | } | |
6464 | ||
6465 | VEC_safe_push (const_char_ptr, excludes, imported_name); | |
6466 | ||
6467 | process_die (child_die, cu); | |
6468 | } | |
6469 | ||
c0cc3a76 SW |
6470 | cp_add_using_directive (import_prefix, |
6471 | canonical_name, | |
6472 | import_alias, | |
13387711 | 6473 | imported_declaration, |
32019081 | 6474 | excludes, |
bb5ed363 | 6475 | &objfile->objfile_obstack); |
32019081 JK |
6476 | |
6477 | do_cleanups (cleanups); | |
27aa8d6a SW |
6478 | } |
6479 | ||
ae2de4f8 DE |
6480 | /* Cleanup function for read_file_scope. */ |
6481 | ||
cb1df416 DJ |
6482 | static void |
6483 | free_cu_line_header (void *arg) | |
6484 | { | |
6485 | struct dwarf2_cu *cu = arg; | |
6486 | ||
6487 | free_line_header (cu->line_header); | |
6488 | cu->line_header = NULL; | |
6489 | } | |
6490 | ||
9291a0cd TT |
6491 | static void |
6492 | find_file_and_directory (struct die_info *die, struct dwarf2_cu *cu, | |
6493 | char **name, char **comp_dir) | |
6494 | { | |
6495 | struct attribute *attr; | |
6496 | ||
6497 | *name = NULL; | |
6498 | *comp_dir = NULL; | |
6499 | ||
6500 | /* Find the filename. Do not use dwarf2_name here, since the filename | |
6501 | is not a source language identifier. */ | |
6502 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
6503 | if (attr) | |
6504 | { | |
6505 | *name = DW_STRING (attr); | |
6506 | } | |
6507 | ||
6508 | attr = dwarf2_attr (die, DW_AT_comp_dir, cu); | |
6509 | if (attr) | |
6510 | *comp_dir = DW_STRING (attr); | |
6511 | else if (*name != NULL && IS_ABSOLUTE_PATH (*name)) | |
6512 | { | |
6513 | *comp_dir = ldirname (*name); | |
6514 | if (*comp_dir != NULL) | |
6515 | make_cleanup (xfree, *comp_dir); | |
6516 | } | |
6517 | if (*comp_dir != NULL) | |
6518 | { | |
6519 | /* Irix 6.2 native cc prepends <machine>.: to the compilation | |
6520 | directory, get rid of it. */ | |
6521 | char *cp = strchr (*comp_dir, ':'); | |
6522 | ||
6523 | if (cp && cp != *comp_dir && cp[-1] == '.' && cp[1] == '/') | |
6524 | *comp_dir = cp + 1; | |
6525 | } | |
6526 | ||
6527 | if (*name == NULL) | |
6528 | *name = "<unknown>"; | |
6529 | } | |
6530 | ||
f3f5162e DE |
6531 | /* Handle DW_AT_stmt_list for a compilation unit or type unit. |
6532 | DIE is the DW_TAG_compile_unit or DW_TAG_type_unit die for CU. | |
6533 | COMP_DIR is the compilation directory. | |
6534 | WANT_LINE_INFO is non-zero if the pc/line-number mapping is needed. */ | |
2ab95328 TT |
6535 | |
6536 | static void | |
6537 | handle_DW_AT_stmt_list (struct die_info *die, struct dwarf2_cu *cu, | |
f3f5162e | 6538 | const char *comp_dir, int want_line_info) |
2ab95328 TT |
6539 | { |
6540 | struct attribute *attr; | |
2ab95328 | 6541 | |
2ab95328 TT |
6542 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
6543 | if (attr) | |
6544 | { | |
6545 | unsigned int line_offset = DW_UNSND (attr); | |
6546 | struct line_header *line_header | |
3019eac3 | 6547 | = dwarf_decode_line_header (line_offset, cu); |
2ab95328 TT |
6548 | |
6549 | if (line_header) | |
dee91e82 DE |
6550 | { |
6551 | cu->line_header = line_header; | |
6552 | make_cleanup (free_cu_line_header, cu); | |
f3f5162e | 6553 | dwarf_decode_lines (line_header, comp_dir, cu, NULL, want_line_info); |
dee91e82 | 6554 | } |
2ab95328 TT |
6555 | } |
6556 | } | |
6557 | ||
95554aad | 6558 | /* Process DW_TAG_compile_unit or DW_TAG_partial_unit. */ |
ae2de4f8 | 6559 | |
c906108c | 6560 | static void |
e7c27a73 | 6561 | read_file_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 6562 | { |
dee91e82 | 6563 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
debd256d | 6564 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
2acceee2 | 6565 | CORE_ADDR lowpc = ((CORE_ADDR) -1); |
c906108c SS |
6566 | CORE_ADDR highpc = ((CORE_ADDR) 0); |
6567 | struct attribute *attr; | |
e1024ff1 | 6568 | char *name = NULL; |
c906108c SS |
6569 | char *comp_dir = NULL; |
6570 | struct die_info *child_die; | |
6571 | bfd *abfd = objfile->obfd; | |
e142c38c | 6572 | CORE_ADDR baseaddr; |
6e70227d | 6573 | |
e142c38c | 6574 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c | 6575 | |
fae299cd | 6576 | get_scope_pc_bounds (die, &lowpc, &highpc, cu); |
c906108c SS |
6577 | |
6578 | /* If we didn't find a lowpc, set it to highpc to avoid complaints | |
6579 | from finish_block. */ | |
2acceee2 | 6580 | if (lowpc == ((CORE_ADDR) -1)) |
c906108c SS |
6581 | lowpc = highpc; |
6582 | lowpc += baseaddr; | |
6583 | highpc += baseaddr; | |
6584 | ||
9291a0cd | 6585 | find_file_and_directory (die, cu, &name, &comp_dir); |
e1024ff1 | 6586 | |
95554aad | 6587 | prepare_one_comp_unit (cu, die, cu->language); |
303b6f5d | 6588 | |
f4b8a18d KW |
6589 | /* The XLCL doesn't generate DW_LANG_OpenCL because this attribute is not |
6590 | standardised yet. As a workaround for the language detection we fall | |
6591 | back to the DW_AT_producer string. */ | |
6592 | if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL") != NULL) | |
6593 | cu->language = language_opencl; | |
6594 | ||
3019eac3 DE |
6595 | /* Similar hack for Go. */ |
6596 | if (cu->producer && strstr (cu->producer, "GNU Go ") != NULL) | |
6597 | set_cu_language (DW_LANG_Go, cu); | |
6598 | ||
6599 | /* We assume that we're processing GCC output. */ | |
6600 | processing_gcc_compilation = 2; | |
6601 | ||
6602 | processing_has_namespace_info = 0; | |
6603 | ||
6604 | start_symtab (name, comp_dir, lowpc); | |
6605 | record_debugformat ("DWARF 2"); | |
6606 | record_producer (cu->producer); | |
6607 | ||
6608 | /* Decode line number information if present. We do this before | |
6609 | processing child DIEs, so that the line header table is available | |
6610 | for DW_AT_decl_file. */ | |
6611 | handle_DW_AT_stmt_list (die, cu, comp_dir, 1); | |
6612 | ||
6613 | /* Process all dies in compilation unit. */ | |
6614 | if (die->child != NULL) | |
6615 | { | |
6616 | child_die = die->child; | |
6617 | while (child_die && child_die->tag) | |
6618 | { | |
6619 | process_die (child_die, cu); | |
6620 | child_die = sibling_die (child_die); | |
6621 | } | |
6622 | } | |
6623 | ||
6624 | /* Decode macro information, if present. Dwarf 2 macro information | |
6625 | refers to information in the line number info statement program | |
6626 | header, so we can only read it if we've read the header | |
6627 | successfully. */ | |
6628 | attr = dwarf2_attr (die, DW_AT_GNU_macros, cu); | |
6629 | if (attr && cu->line_header) | |
6630 | { | |
6631 | if (dwarf2_attr (die, DW_AT_macro_info, cu)) | |
6632 | complaint (&symfile_complaints, | |
6633 | _("CU refers to both DW_AT_GNU_macros and DW_AT_macro_info")); | |
6634 | ||
6635 | dwarf_decode_macros (cu->line_header, DW_UNSND (attr), | |
6636 | comp_dir, abfd, cu, | |
fceca515 DE |
6637 | &dwarf2_per_objfile->macro, 1, |
6638 | ".debug_macro"); | |
3019eac3 DE |
6639 | } |
6640 | else | |
6641 | { | |
6642 | attr = dwarf2_attr (die, DW_AT_macro_info, cu); | |
6643 | if (attr && cu->line_header) | |
6644 | { | |
6645 | unsigned int macro_offset = DW_UNSND (attr); | |
6646 | ||
6647 | dwarf_decode_macros (cu->line_header, macro_offset, | |
6648 | comp_dir, abfd, cu, | |
fceca515 DE |
6649 | &dwarf2_per_objfile->macinfo, 0, |
6650 | ".debug_macinfo"); | |
3019eac3 DE |
6651 | } |
6652 | } | |
6653 | ||
6654 | do_cleanups (back_to); | |
6655 | } | |
6656 | ||
6657 | /* Process DW_TAG_type_unit. | |
6658 | For TUs we want to skip the first top level sibling if it's not the | |
6659 | actual type being defined by this TU. In this case the first top | |
6660 | level sibling is there to provide context only. */ | |
6661 | ||
6662 | static void | |
6663 | read_type_unit_scope (struct die_info *die, struct dwarf2_cu *cu) | |
6664 | { | |
6665 | struct objfile *objfile = cu->objfile; | |
6666 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); | |
6667 | CORE_ADDR lowpc; | |
6668 | struct attribute *attr; | |
6669 | char *name = NULL; | |
6670 | char *comp_dir = NULL; | |
6671 | struct die_info *child_die; | |
6672 | bfd *abfd = objfile->obfd; | |
6673 | ||
6674 | /* start_symtab needs a low pc, but we don't really have one. | |
6675 | Do what read_file_scope would do in the absence of such info. */ | |
6676 | lowpc = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
6677 | ||
6678 | /* Find the filename. Do not use dwarf2_name here, since the filename | |
6679 | is not a source language identifier. */ | |
6680 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
6681 | if (attr) | |
6682 | name = DW_STRING (attr); | |
6683 | ||
6684 | attr = dwarf2_attr (die, DW_AT_comp_dir, cu); | |
6685 | if (attr) | |
6686 | comp_dir = DW_STRING (attr); | |
6687 | else if (name != NULL && IS_ABSOLUTE_PATH (name)) | |
6688 | { | |
6689 | comp_dir = ldirname (name); | |
6690 | if (comp_dir != NULL) | |
6691 | make_cleanup (xfree, comp_dir); | |
6692 | } | |
6693 | ||
6694 | if (name == NULL) | |
6695 | name = "<unknown>"; | |
6696 | ||
95554aad | 6697 | prepare_one_comp_unit (cu, die, language_minimal); |
3019eac3 DE |
6698 | |
6699 | /* We assume that we're processing GCC output. */ | |
6700 | processing_gcc_compilation = 2; | |
6701 | ||
6702 | processing_has_namespace_info = 0; | |
6703 | ||
6704 | start_symtab (name, comp_dir, lowpc); | |
6705 | record_debugformat ("DWARF 2"); | |
6706 | record_producer (cu->producer); | |
6707 | ||
6708 | /* Decode line number information if present. We do this before | |
6709 | processing child DIEs, so that the line header table is available | |
6710 | for DW_AT_decl_file. | |
6711 | We don't need the pc/line-number mapping for type units. */ | |
6712 | handle_DW_AT_stmt_list (die, cu, comp_dir, 0); | |
6713 | ||
6714 | /* Process the dies in the type unit. */ | |
6715 | if (die->child == NULL) | |
6716 | { | |
6717 | dump_die_for_error (die); | |
6718 | error (_("Dwarf Error: Missing children for type unit [in module %s]"), | |
6719 | bfd_get_filename (abfd)); | |
6720 | } | |
6721 | ||
6722 | child_die = die->child; | |
6723 | ||
6724 | while (child_die && child_die->tag) | |
6725 | { | |
6726 | process_die (child_die, cu); | |
6727 | ||
6728 | child_die = sibling_die (child_die); | |
6729 | } | |
6730 | ||
6731 | do_cleanups (back_to); | |
6732 | } | |
6733 | \f | |
6734 | /* DWO files. */ | |
6735 | ||
6736 | static hashval_t | |
6737 | hash_dwo_file (const void *item) | |
6738 | { | |
6739 | const struct dwo_file *dwo_file = item; | |
6740 | ||
6741 | return htab_hash_string (dwo_file->dwo_name); | |
6742 | } | |
6743 | ||
6744 | static int | |
6745 | eq_dwo_file (const void *item_lhs, const void *item_rhs) | |
6746 | { | |
6747 | const struct dwo_file *lhs = item_lhs; | |
6748 | const struct dwo_file *rhs = item_rhs; | |
6749 | ||
6750 | return strcmp (lhs->dwo_name, rhs->dwo_name) == 0; | |
6751 | } | |
6752 | ||
6753 | /* Allocate a hash table for DWO files. */ | |
6754 | ||
6755 | static htab_t | |
6756 | allocate_dwo_file_hash_table (void) | |
6757 | { | |
6758 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
6759 | ||
6760 | return htab_create_alloc_ex (41, | |
6761 | hash_dwo_file, | |
6762 | eq_dwo_file, | |
6763 | NULL, | |
6764 | &objfile->objfile_obstack, | |
6765 | hashtab_obstack_allocate, | |
6766 | dummy_obstack_deallocate); | |
6767 | } | |
6768 | ||
6769 | static hashval_t | |
6770 | hash_dwo_unit (const void *item) | |
6771 | { | |
6772 | const struct dwo_unit *dwo_unit = item; | |
6773 | ||
6774 | /* This drops the top 32 bits of the id, but is ok for a hash. */ | |
6775 | return dwo_unit->signature; | |
6776 | } | |
6777 | ||
6778 | static int | |
6779 | eq_dwo_unit (const void *item_lhs, const void *item_rhs) | |
6780 | { | |
6781 | const struct dwo_unit *lhs = item_lhs; | |
6782 | const struct dwo_unit *rhs = item_rhs; | |
6783 | ||
6784 | /* The signature is assumed to be unique within the DWO file. | |
6785 | So while object file CU dwo_id's always have the value zero, | |
6786 | that's OK, assuming each object file DWO file has only one CU, | |
6787 | and that's the rule for now. */ | |
6788 | return lhs->signature == rhs->signature; | |
6789 | } | |
6790 | ||
6791 | /* Allocate a hash table for DWO CUs,TUs. | |
6792 | There is one of these tables for each of CUs,TUs for each DWO file. */ | |
6793 | ||
6794 | static htab_t | |
6795 | allocate_dwo_unit_table (struct objfile *objfile) | |
6796 | { | |
6797 | /* Start out with a pretty small number. | |
6798 | Generally DWO files contain only one CU and maybe some TUs. */ | |
6799 | return htab_create_alloc_ex (3, | |
6800 | hash_dwo_unit, | |
6801 | eq_dwo_unit, | |
6802 | NULL, | |
6803 | &objfile->objfile_obstack, | |
6804 | hashtab_obstack_allocate, | |
6805 | dummy_obstack_deallocate); | |
6806 | } | |
6807 | ||
6808 | /* This function is mapped across the sections and remembers the offset and | |
6809 | size of each of the DWO debugging sections we are interested in. */ | |
6810 | ||
6811 | static void | |
6812 | dwarf2_locate_dwo_sections (bfd *abfd, asection *sectp, void *dwo_file_ptr) | |
6813 | { | |
6814 | struct dwo_file *dwo_file = dwo_file_ptr; | |
6815 | const struct dwo_section_names *names = &dwo_section_names; | |
6816 | ||
6817 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
6818 | { | |
6819 | dwo_file->sections.abbrev.asection = sectp; | |
6820 | dwo_file->sections.abbrev.size = bfd_get_section_size (sectp); | |
6821 | } | |
6822 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
6823 | { | |
6824 | dwo_file->sections.info.asection = sectp; | |
6825 | dwo_file->sections.info.size = bfd_get_section_size (sectp); | |
6826 | } | |
6827 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
6828 | { | |
6829 | dwo_file->sections.line.asection = sectp; | |
6830 | dwo_file->sections.line.size = bfd_get_section_size (sectp); | |
6831 | } | |
6832 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
6833 | { | |
6834 | dwo_file->sections.loc.asection = sectp; | |
6835 | dwo_file->sections.loc.size = bfd_get_section_size (sectp); | |
6836 | } | |
6837 | else if (section_is_p (sectp->name, &names->str_dwo)) | |
6838 | { | |
6839 | dwo_file->sections.str.asection = sectp; | |
6840 | dwo_file->sections.str.size = bfd_get_section_size (sectp); | |
6841 | } | |
6842 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
6843 | { | |
6844 | dwo_file->sections.str_offsets.asection = sectp; | |
6845 | dwo_file->sections.str_offsets.size = bfd_get_section_size (sectp); | |
6846 | } | |
6847 | else if (section_is_p (sectp->name, &names->types_dwo)) | |
6848 | { | |
6849 | struct dwarf2_section_info type_section; | |
6850 | ||
6851 | memset (&type_section, 0, sizeof (type_section)); | |
6852 | type_section.asection = sectp; | |
6853 | type_section.size = bfd_get_section_size (sectp); | |
6854 | VEC_safe_push (dwarf2_section_info_def, dwo_file->sections.types, | |
6855 | &type_section); | |
6856 | } | |
6857 | } | |
6858 | ||
6859 | /* Structure used to pass data to create_debug_info_hash_table_reader. */ | |
6860 | ||
6861 | struct create_dwo_info_table_data | |
6862 | { | |
6863 | struct dwo_file *dwo_file; | |
6864 | htab_t cu_htab; | |
6865 | }; | |
6866 | ||
6867 | /* die_reader_func for create_debug_info_hash_table. */ | |
6868 | ||
6869 | static void | |
6870 | create_debug_info_hash_table_reader (const struct die_reader_specs *reader, | |
6871 | gdb_byte *info_ptr, | |
6872 | struct die_info *comp_unit_die, | |
6873 | int has_children, | |
6874 | void *datap) | |
6875 | { | |
6876 | struct dwarf2_cu *cu = reader->cu; | |
6877 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
6878 | sect_offset offset = cu->per_cu->offset; | |
6879 | struct dwarf2_section_info *section = cu->per_cu->info_or_types_section; | |
6880 | struct create_dwo_info_table_data *data = datap; | |
6881 | struct dwo_file *dwo_file = data->dwo_file; | |
6882 | htab_t cu_htab = data->cu_htab; | |
6883 | void **slot; | |
6884 | struct attribute *attr; | |
6885 | struct dwo_unit *dwo_unit; | |
6886 | ||
6887 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_id, cu); | |
6888 | if (attr == NULL) | |
6889 | { | |
6890 | error (_("Dwarf Error: debug entry at offset 0x%x is missing" | |
6891 | " its dwo_id [in module %s]"), | |
6892 | offset.sect_off, dwo_file->dwo_name); | |
6893 | return; | |
6894 | } | |
6895 | ||
6896 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); | |
6897 | dwo_unit->dwo_file = dwo_file; | |
6898 | dwo_unit->signature = DW_UNSND (attr); | |
6899 | dwo_unit->info_or_types_section = section; | |
6900 | dwo_unit->offset = offset; | |
6901 | dwo_unit->length = cu->per_cu->length; | |
6902 | ||
6903 | slot = htab_find_slot (cu_htab, dwo_unit, INSERT); | |
6904 | gdb_assert (slot != NULL); | |
6905 | if (*slot != NULL) | |
6906 | { | |
6907 | const struct dwo_unit *dup_dwo_unit = *slot; | |
6908 | ||
6909 | complaint (&symfile_complaints, | |
6910 | _("debug entry at offset 0x%x is duplicate to the entry at" | |
6911 | " offset 0x%x, dwo_id 0x%s [in module %s]"), | |
6912 | offset.sect_off, dup_dwo_unit->offset.sect_off, | |
6913 | phex (dwo_unit->signature, sizeof (dwo_unit->signature)), | |
6914 | dwo_file->dwo_name); | |
6915 | } | |
6916 | else | |
6917 | *slot = dwo_unit; | |
6918 | ||
6919 | if (dwarf2_die_debug) | |
6920 | fprintf_unfiltered (gdb_stdlog, " offset 0x%x, dwo_id 0x%s\n", | |
6921 | offset.sect_off, | |
6922 | phex (dwo_unit->signature, | |
6923 | sizeof (dwo_unit->signature))); | |
6924 | } | |
6925 | ||
6926 | /* Create a hash table to map DWO IDs to their CU entry in .debug_info.dwo. */ | |
6927 | ||
6928 | static htab_t | |
6929 | create_debug_info_hash_table (struct dwo_file *dwo_file) | |
6930 | { | |
6931 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
6932 | struct dwarf2_section_info *section = &dwo_file->sections.info; | |
6933 | bfd *abfd; | |
6934 | htab_t cu_htab; | |
6935 | gdb_byte *info_ptr, *end_ptr; | |
6936 | struct create_dwo_info_table_data create_dwo_info_table_data; | |
6937 | ||
6938 | dwarf2_read_section (objfile, section); | |
6939 | info_ptr = section->buffer; | |
6940 | ||
6941 | if (info_ptr == NULL) | |
6942 | return NULL; | |
6943 | ||
6944 | /* We can't set abfd until now because the section may be empty or | |
6945 | not present, in which case section->asection will be NULL. */ | |
6946 | abfd = section->asection->owner; | |
6947 | ||
6948 | if (dwarf2_die_debug) | |
6949 | fprintf_unfiltered (gdb_stdlog, "Reading .debug_info.dwo for %s:\n", | |
6950 | bfd_get_filename (abfd)); | |
6951 | ||
6952 | cu_htab = allocate_dwo_unit_table (objfile); | |
6953 | ||
6954 | create_dwo_info_table_data.dwo_file = dwo_file; | |
6955 | create_dwo_info_table_data.cu_htab = cu_htab; | |
6956 | ||
6957 | end_ptr = info_ptr + section->size; | |
6958 | while (info_ptr < end_ptr) | |
6959 | { | |
6960 | struct dwarf2_per_cu_data per_cu; | |
6961 | ||
6962 | memset (&per_cu, 0, sizeof (per_cu)); | |
6963 | per_cu.objfile = objfile; | |
6964 | per_cu.is_debug_types = 0; | |
6965 | per_cu.offset.sect_off = info_ptr - section->buffer; | |
6966 | per_cu.info_or_types_section = section; | |
6967 | ||
6968 | init_cutu_and_read_dies_no_follow (&per_cu, | |
6969 | &dwo_file->sections.abbrev, | |
6970 | dwo_file, | |
6971 | create_debug_info_hash_table_reader, | |
6972 | &create_dwo_info_table_data); | |
6973 | ||
6974 | info_ptr += per_cu.length; | |
6975 | } | |
6976 | ||
6977 | return cu_htab; | |
6978 | } | |
6979 | ||
6980 | /* Subroutine of open_dwo_file to simplify it. | |
6981 | Open the file specified by FILE_NAME and hand it off to BFD for | |
6982 | preliminary analysis. Return a newly initialized bfd *, which | |
6983 | includes a canonicalized copy of FILE_NAME. | |
6984 | In case of trouble, return NULL. | |
6985 | NOTE: This function is derived from symfile_bfd_open. */ | |
6986 | ||
6987 | static bfd * | |
6988 | try_open_dwo_file (const char *file_name) | |
6989 | { | |
6990 | bfd *sym_bfd; | |
6991 | int desc; | |
6992 | char *absolute_name; | |
3019eac3 DE |
6993 | |
6994 | desc = openp (debug_file_directory, OPF_TRY_CWD_FIRST, file_name, | |
6995 | O_RDONLY | O_BINARY, &absolute_name); | |
6996 | if (desc < 0) | |
6997 | return NULL; | |
6998 | ||
6999 | sym_bfd = bfd_fopen (absolute_name, gnutarget, FOPEN_RB, desc); | |
7000 | if (!sym_bfd) | |
7001 | { | |
3019eac3 DE |
7002 | xfree (absolute_name); |
7003 | return NULL; | |
7004 | } | |
7005 | bfd_set_cacheable (sym_bfd, 1); | |
7006 | ||
7007 | if (!bfd_check_format (sym_bfd, bfd_object)) | |
7008 | { | |
7009 | bfd_close (sym_bfd); /* This also closes desc. */ | |
7010 | xfree (absolute_name); | |
7011 | return NULL; | |
7012 | } | |
7013 | ||
7014 | /* bfd_usrdata exists for applications and libbfd must not touch it. */ | |
7015 | gdb_assert (bfd_usrdata (sym_bfd) == NULL); | |
7016 | ||
7017 | return sym_bfd; | |
7018 | } | |
7019 | ||
7020 | /* Try to open DWO file DWO_NAME. | |
7021 | COMP_DIR is the DW_AT_comp_dir attribute. | |
7022 | The result is the bfd handle of the file. | |
7023 | If there is a problem finding or opening the file, return NULL. | |
7024 | Upon success, the canonicalized path of the file is stored in the bfd, | |
7025 | same as symfile_bfd_open. */ | |
7026 | ||
7027 | static bfd * | |
7028 | open_dwo_file (const char *dwo_name, const char *comp_dir) | |
7029 | { | |
7030 | bfd *abfd; | |
3019eac3 DE |
7031 | |
7032 | if (IS_ABSOLUTE_PATH (dwo_name)) | |
7033 | return try_open_dwo_file (dwo_name); | |
7034 | ||
7035 | /* Before trying the search path, try DWO_NAME in COMP_DIR. */ | |
7036 | ||
7037 | if (comp_dir != NULL) | |
7038 | { | |
7039 | char *path_to_try = concat (comp_dir, SLASH_STRING, dwo_name, NULL); | |
7040 | ||
7041 | /* NOTE: If comp_dir is a relative path, this will also try the | |
7042 | search path, which seems useful. */ | |
7043 | abfd = try_open_dwo_file (path_to_try); | |
7044 | xfree (path_to_try); | |
7045 | if (abfd != NULL) | |
7046 | return abfd; | |
7047 | } | |
7048 | ||
7049 | /* That didn't work, try debug-file-directory, which, despite its name, | |
7050 | is a list of paths. */ | |
7051 | ||
7052 | if (*debug_file_directory == '\0') | |
7053 | return NULL; | |
7054 | ||
7055 | return try_open_dwo_file (dwo_name); | |
7056 | } | |
7057 | ||
7058 | /* Initialize the use of the DWO file specified by DWO_NAME. */ | |
7059 | ||
7060 | static struct dwo_file * | |
7061 | init_dwo_file (const char *dwo_name, const char *comp_dir) | |
7062 | { | |
7063 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
7064 | struct dwo_file *dwo_file = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
7065 | struct dwo_file); | |
7066 | bfd *abfd; | |
7067 | struct cleanup *cleanups; | |
7068 | ||
7069 | if (dwarf2_die_debug) | |
7070 | fprintf_unfiltered (gdb_stdlog, "Reading DWO file %s:\n", dwo_name); | |
7071 | ||
7072 | abfd = open_dwo_file (dwo_name, comp_dir); | |
7073 | if (abfd == NULL) | |
7074 | return NULL; | |
7075 | dwo_file->dwo_name = dwo_name; | |
7076 | dwo_file->dwo_bfd = abfd; | |
7077 | ||
7078 | cleanups = make_cleanup (free_dwo_file_cleanup, dwo_file); | |
7079 | ||
7080 | bfd_map_over_sections (abfd, dwarf2_locate_dwo_sections, dwo_file); | |
7081 | ||
7082 | dwo_file->cus = create_debug_info_hash_table (dwo_file); | |
7083 | ||
7084 | dwo_file->tus = create_debug_types_hash_table (dwo_file, | |
7085 | dwo_file->sections.types); | |
7086 | ||
7087 | discard_cleanups (cleanups); | |
7088 | ||
7089 | return dwo_file; | |
7090 | } | |
7091 | ||
7092 | /* Lookup DWO file DWO_NAME. */ | |
7093 | ||
7094 | static struct dwo_file * | |
7095 | lookup_dwo_file (char *dwo_name, const char *comp_dir) | |
7096 | { | |
7097 | struct dwo_file *dwo_file; | |
7098 | struct dwo_file find_entry; | |
7099 | void **slot; | |
7100 | ||
7101 | if (dwarf2_per_objfile->dwo_files == NULL) | |
7102 | dwarf2_per_objfile->dwo_files = allocate_dwo_file_hash_table (); | |
7103 | ||
7104 | /* Have we already seen this DWO file? */ | |
7105 | find_entry.dwo_name = dwo_name; | |
7106 | slot = htab_find_slot (dwarf2_per_objfile->dwo_files, &find_entry, INSERT); | |
7107 | ||
7108 | /* If not, read it in and build a table of the DWOs it contains. */ | |
7109 | if (*slot == NULL) | |
7110 | *slot = init_dwo_file (dwo_name, comp_dir); | |
7111 | ||
7112 | /* NOTE: This will be NULL if unable to open the file. */ | |
7113 | dwo_file = *slot; | |
7114 | ||
7115 | return dwo_file; | |
7116 | } | |
7117 | ||
7118 | /* Lookup the DWO CU referenced from THIS_CU in DWO file DWO_NAME. | |
7119 | If non-NULL, comp_dir is the DW_AT_comp_dir attribute. | |
7120 | SIGNATURE is the "dwo_id" of the CU (for consistency we use the same | |
7121 | nomenclature as TUs). | |
7122 | The result is the DWO CU or NULL if we didn't find it | |
7123 | (dwo_id mismatch or couldn't find the DWO file). */ | |
7124 | ||
7125 | static struct dwo_unit * | |
7126 | lookup_dwo_comp_unit (struct dwarf2_per_cu_data *this_cu, | |
7127 | char *dwo_name, const char *comp_dir, | |
7128 | ULONGEST signature) | |
7129 | { | |
7130 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
7131 | struct dwo_file *dwo_file; | |
7132 | ||
7133 | dwo_file = lookup_dwo_file (dwo_name, comp_dir); | |
7134 | if (dwo_file == NULL) | |
7135 | return NULL; | |
7136 | ||
7137 | /* Look up the DWO using its signature(dwo_id). */ | |
7138 | ||
7139 | if (dwo_file->cus != NULL) | |
7140 | { | |
7141 | struct dwo_unit find_dwo_cu, *dwo_cu; | |
7142 | ||
7143 | find_dwo_cu.signature = signature; | |
7144 | dwo_cu = htab_find (dwo_file->cus, &find_dwo_cu); | |
a766d390 | 7145 | |
3019eac3 DE |
7146 | if (dwo_cu != NULL) |
7147 | return dwo_cu; | |
7148 | } | |
c906108c | 7149 | |
3019eac3 | 7150 | /* We didn't find it. This must mean a dwo_id mismatch. */ |
df8a16a1 | 7151 | |
3019eac3 DE |
7152 | complaint (&symfile_complaints, |
7153 | _("Could not find DWO CU referenced by CU at offset 0x%x" | |
7154 | " [in module %s]"), | |
7155 | this_cu->offset.sect_off, objfile->name); | |
7156 | return NULL; | |
7157 | } | |
c906108c | 7158 | |
3019eac3 DE |
7159 | /* Lookup the DWO TU referenced from THIS_TU in DWO file DWO_NAME. |
7160 | If non-NULL, comp_dir is the DW_AT_comp_dir attribute. | |
7161 | The result is the DWO CU or NULL if we didn't find it | |
7162 | (dwo_id mismatch or couldn't find the DWO file). */ | |
debd256d | 7163 | |
3019eac3 DE |
7164 | static struct dwo_unit * |
7165 | lookup_dwo_type_unit (struct signatured_type *this_tu, | |
7166 | char *dwo_name, const char *comp_dir) | |
7167 | { | |
7168 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
7169 | struct dwo_file *dwo_file; | |
cb1df416 | 7170 | |
3019eac3 DE |
7171 | dwo_file = lookup_dwo_file (dwo_name, comp_dir); |
7172 | if (dwo_file == NULL) | |
7173 | return NULL; | |
cf2c3c16 | 7174 | |
3019eac3 DE |
7175 | /* Look up the DWO using its signature(dwo_id). */ |
7176 | ||
7177 | if (dwo_file->tus != NULL) | |
cf2c3c16 | 7178 | { |
3019eac3 | 7179 | struct dwo_unit find_dwo_tu, *dwo_tu; |
9a619af0 | 7180 | |
3019eac3 DE |
7181 | find_dwo_tu.signature = this_tu->signature; |
7182 | dwo_tu = htab_find (dwo_file->tus, &find_dwo_tu); | |
7183 | ||
7184 | if (dwo_tu != NULL) | |
7185 | return dwo_tu; | |
2e276125 | 7186 | } |
9cdd5dbd | 7187 | |
3019eac3 DE |
7188 | /* We didn't find it. This must mean a dwo_id mismatch. */ |
7189 | ||
7190 | complaint (&symfile_complaints, | |
7191 | _("Could not find DWO TU referenced by TU at offset 0x%x" | |
7192 | " [in module %s]"), | |
7193 | this_tu->per_cu.offset.sect_off, objfile->name); | |
7194 | return NULL; | |
5fb290d7 DJ |
7195 | } |
7196 | ||
3019eac3 DE |
7197 | /* Free all resources associated with DWO_FILE. |
7198 | Close the DWO file and munmap the sections. | |
7199 | All memory should be on the objfile obstack. */ | |
348e048f DE |
7200 | |
7201 | static void | |
3019eac3 | 7202 | free_dwo_file (struct dwo_file *dwo_file, struct objfile *objfile) |
348e048f | 7203 | { |
3019eac3 DE |
7204 | int ix; |
7205 | struct dwarf2_section_info *section; | |
348e048f | 7206 | |
3019eac3 DE |
7207 | gdb_assert (dwo_file->dwo_bfd != objfile->obfd); |
7208 | bfd_close (dwo_file->dwo_bfd); | |
348e048f | 7209 | |
3019eac3 DE |
7210 | munmap_section_buffer (&dwo_file->sections.abbrev); |
7211 | munmap_section_buffer (&dwo_file->sections.info); | |
7212 | munmap_section_buffer (&dwo_file->sections.line); | |
7213 | munmap_section_buffer (&dwo_file->sections.loc); | |
7214 | munmap_section_buffer (&dwo_file->sections.str); | |
7215 | munmap_section_buffer (&dwo_file->sections.str_offsets); | |
348e048f | 7216 | |
3019eac3 DE |
7217 | for (ix = 0; |
7218 | VEC_iterate (dwarf2_section_info_def, dwo_file->sections.types, | |
7219 | ix, section); | |
7220 | ++ix) | |
7221 | munmap_section_buffer (section); | |
348e048f | 7222 | |
3019eac3 DE |
7223 | VEC_free (dwarf2_section_info_def, dwo_file->sections.types); |
7224 | } | |
348e048f | 7225 | |
3019eac3 | 7226 | /* Wrapper for free_dwo_file for use in cleanups. */ |
348e048f | 7227 | |
3019eac3 DE |
7228 | static void |
7229 | free_dwo_file_cleanup (void *arg) | |
7230 | { | |
7231 | struct dwo_file *dwo_file = (struct dwo_file *) arg; | |
7232 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
348e048f | 7233 | |
3019eac3 DE |
7234 | free_dwo_file (dwo_file, objfile); |
7235 | } | |
348e048f | 7236 | |
3019eac3 | 7237 | /* Traversal function for free_dwo_files. */ |
2ab95328 | 7238 | |
3019eac3 DE |
7239 | static int |
7240 | free_dwo_file_from_slot (void **slot, void *info) | |
7241 | { | |
7242 | struct dwo_file *dwo_file = (struct dwo_file *) *slot; | |
7243 | struct objfile *objfile = (struct objfile *) info; | |
348e048f | 7244 | |
3019eac3 | 7245 | free_dwo_file (dwo_file, objfile); |
348e048f | 7246 | |
3019eac3 DE |
7247 | return 1; |
7248 | } | |
348e048f | 7249 | |
3019eac3 | 7250 | /* Free all resources associated with DWO_FILES. */ |
348e048f | 7251 | |
3019eac3 DE |
7252 | static void |
7253 | free_dwo_files (htab_t dwo_files, struct objfile *objfile) | |
7254 | { | |
7255 | htab_traverse_noresize (dwo_files, free_dwo_file_from_slot, objfile); | |
348e048f | 7256 | } |
3019eac3 DE |
7257 | \f |
7258 | /* Read in various DIEs. */ | |
348e048f | 7259 | |
d389af10 JK |
7260 | /* qsort helper for inherit_abstract_dies. */ |
7261 | ||
7262 | static int | |
7263 | unsigned_int_compar (const void *ap, const void *bp) | |
7264 | { | |
7265 | unsigned int a = *(unsigned int *) ap; | |
7266 | unsigned int b = *(unsigned int *) bp; | |
7267 | ||
7268 | return (a > b) - (b > a); | |
7269 | } | |
7270 | ||
7271 | /* DW_AT_abstract_origin inherits whole DIEs (not just their attributes). | |
3e43a32a MS |
7272 | Inherit only the children of the DW_AT_abstract_origin DIE not being |
7273 | already referenced by DW_AT_abstract_origin from the children of the | |
7274 | current DIE. */ | |
d389af10 JK |
7275 | |
7276 | static void | |
7277 | inherit_abstract_dies (struct die_info *die, struct dwarf2_cu *cu) | |
7278 | { | |
7279 | struct die_info *child_die; | |
7280 | unsigned die_children_count; | |
7281 | /* CU offsets which were referenced by children of the current DIE. */ | |
b64f50a1 JK |
7282 | sect_offset *offsets; |
7283 | sect_offset *offsets_end, *offsetp; | |
d389af10 JK |
7284 | /* Parent of DIE - referenced by DW_AT_abstract_origin. */ |
7285 | struct die_info *origin_die; | |
7286 | /* Iterator of the ORIGIN_DIE children. */ | |
7287 | struct die_info *origin_child_die; | |
7288 | struct cleanup *cleanups; | |
7289 | struct attribute *attr; | |
cd02d79d PA |
7290 | struct dwarf2_cu *origin_cu; |
7291 | struct pending **origin_previous_list_in_scope; | |
d389af10 JK |
7292 | |
7293 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
7294 | if (!attr) | |
7295 | return; | |
7296 | ||
cd02d79d PA |
7297 | /* Note that following die references may follow to a die in a |
7298 | different cu. */ | |
7299 | ||
7300 | origin_cu = cu; | |
7301 | origin_die = follow_die_ref (die, attr, &origin_cu); | |
7302 | ||
7303 | /* We're inheriting ORIGIN's children into the scope we'd put DIE's | |
7304 | symbols in. */ | |
7305 | origin_previous_list_in_scope = origin_cu->list_in_scope; | |
7306 | origin_cu->list_in_scope = cu->list_in_scope; | |
7307 | ||
edb3359d DJ |
7308 | if (die->tag != origin_die->tag |
7309 | && !(die->tag == DW_TAG_inlined_subroutine | |
7310 | && origin_die->tag == DW_TAG_subprogram)) | |
d389af10 JK |
7311 | complaint (&symfile_complaints, |
7312 | _("DIE 0x%x and its abstract origin 0x%x have different tags"), | |
b64f50a1 | 7313 | die->offset.sect_off, origin_die->offset.sect_off); |
d389af10 JK |
7314 | |
7315 | child_die = die->child; | |
7316 | die_children_count = 0; | |
7317 | while (child_die && child_die->tag) | |
7318 | { | |
7319 | child_die = sibling_die (child_die); | |
7320 | die_children_count++; | |
7321 | } | |
7322 | offsets = xmalloc (sizeof (*offsets) * die_children_count); | |
7323 | cleanups = make_cleanup (xfree, offsets); | |
7324 | ||
7325 | offsets_end = offsets; | |
7326 | child_die = die->child; | |
7327 | while (child_die && child_die->tag) | |
7328 | { | |
c38f313d DJ |
7329 | /* For each CHILD_DIE, find the corresponding child of |
7330 | ORIGIN_DIE. If there is more than one layer of | |
7331 | DW_AT_abstract_origin, follow them all; there shouldn't be, | |
7332 | but GCC versions at least through 4.4 generate this (GCC PR | |
7333 | 40573). */ | |
7334 | struct die_info *child_origin_die = child_die; | |
cd02d79d | 7335 | struct dwarf2_cu *child_origin_cu = cu; |
9a619af0 | 7336 | |
c38f313d DJ |
7337 | while (1) |
7338 | { | |
cd02d79d PA |
7339 | attr = dwarf2_attr (child_origin_die, DW_AT_abstract_origin, |
7340 | child_origin_cu); | |
c38f313d DJ |
7341 | if (attr == NULL) |
7342 | break; | |
cd02d79d PA |
7343 | child_origin_die = follow_die_ref (child_origin_die, attr, |
7344 | &child_origin_cu); | |
c38f313d DJ |
7345 | } |
7346 | ||
d389af10 JK |
7347 | /* According to DWARF3 3.3.8.2 #3 new entries without their abstract |
7348 | counterpart may exist. */ | |
c38f313d | 7349 | if (child_origin_die != child_die) |
d389af10 | 7350 | { |
edb3359d DJ |
7351 | if (child_die->tag != child_origin_die->tag |
7352 | && !(child_die->tag == DW_TAG_inlined_subroutine | |
7353 | && child_origin_die->tag == DW_TAG_subprogram)) | |
d389af10 JK |
7354 | complaint (&symfile_complaints, |
7355 | _("Child DIE 0x%x and its abstract origin 0x%x have " | |
b64f50a1 JK |
7356 | "different tags"), child_die->offset.sect_off, |
7357 | child_origin_die->offset.sect_off); | |
c38f313d DJ |
7358 | if (child_origin_die->parent != origin_die) |
7359 | complaint (&symfile_complaints, | |
7360 | _("Child DIE 0x%x and its abstract origin 0x%x have " | |
b64f50a1 JK |
7361 | "different parents"), child_die->offset.sect_off, |
7362 | child_origin_die->offset.sect_off); | |
c38f313d DJ |
7363 | else |
7364 | *offsets_end++ = child_origin_die->offset; | |
d389af10 JK |
7365 | } |
7366 | child_die = sibling_die (child_die); | |
7367 | } | |
7368 | qsort (offsets, offsets_end - offsets, sizeof (*offsets), | |
7369 | unsigned_int_compar); | |
7370 | for (offsetp = offsets + 1; offsetp < offsets_end; offsetp++) | |
b64f50a1 | 7371 | if (offsetp[-1].sect_off == offsetp->sect_off) |
3e43a32a MS |
7372 | complaint (&symfile_complaints, |
7373 | _("Multiple children of DIE 0x%x refer " | |
7374 | "to DIE 0x%x as their abstract origin"), | |
b64f50a1 | 7375 | die->offset.sect_off, offsetp->sect_off); |
d389af10 JK |
7376 | |
7377 | offsetp = offsets; | |
7378 | origin_child_die = origin_die->child; | |
7379 | while (origin_child_die && origin_child_die->tag) | |
7380 | { | |
7381 | /* Is ORIGIN_CHILD_DIE referenced by any of the DIE children? */ | |
b64f50a1 JK |
7382 | while (offsetp < offsets_end |
7383 | && offsetp->sect_off < origin_child_die->offset.sect_off) | |
d389af10 | 7384 | offsetp++; |
b64f50a1 JK |
7385 | if (offsetp >= offsets_end |
7386 | || offsetp->sect_off > origin_child_die->offset.sect_off) | |
d389af10 JK |
7387 | { |
7388 | /* Found that ORIGIN_CHILD_DIE is really not referenced. */ | |
cd02d79d | 7389 | process_die (origin_child_die, origin_cu); |
d389af10 JK |
7390 | } |
7391 | origin_child_die = sibling_die (origin_child_die); | |
7392 | } | |
cd02d79d | 7393 | origin_cu->list_in_scope = origin_previous_list_in_scope; |
d389af10 JK |
7394 | |
7395 | do_cleanups (cleanups); | |
7396 | } | |
7397 | ||
c906108c | 7398 | static void |
e7c27a73 | 7399 | read_func_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 7400 | { |
e7c27a73 | 7401 | struct objfile *objfile = cu->objfile; |
52f0bd74 | 7402 | struct context_stack *new; |
c906108c SS |
7403 | CORE_ADDR lowpc; |
7404 | CORE_ADDR highpc; | |
7405 | struct die_info *child_die; | |
edb3359d | 7406 | struct attribute *attr, *call_line, *call_file; |
c906108c | 7407 | char *name; |
e142c38c | 7408 | CORE_ADDR baseaddr; |
801e3a5b | 7409 | struct block *block; |
edb3359d | 7410 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
34eaf542 TT |
7411 | VEC (symbolp) *template_args = NULL; |
7412 | struct template_symbol *templ_func = NULL; | |
edb3359d DJ |
7413 | |
7414 | if (inlined_func) | |
7415 | { | |
7416 | /* If we do not have call site information, we can't show the | |
7417 | caller of this inlined function. That's too confusing, so | |
7418 | only use the scope for local variables. */ | |
7419 | call_line = dwarf2_attr (die, DW_AT_call_line, cu); | |
7420 | call_file = dwarf2_attr (die, DW_AT_call_file, cu); | |
7421 | if (call_line == NULL || call_file == NULL) | |
7422 | { | |
7423 | read_lexical_block_scope (die, cu); | |
7424 | return; | |
7425 | } | |
7426 | } | |
c906108c | 7427 | |
e142c38c DJ |
7428 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
7429 | ||
94af9270 | 7430 | name = dwarf2_name (die, cu); |
c906108c | 7431 | |
e8d05480 JB |
7432 | /* Ignore functions with missing or empty names. These are actually |
7433 | illegal according to the DWARF standard. */ | |
7434 | if (name == NULL) | |
7435 | { | |
7436 | complaint (&symfile_complaints, | |
b64f50a1 JK |
7437 | _("missing name for subprogram DIE at %d"), |
7438 | die->offset.sect_off); | |
e8d05480 JB |
7439 | return; |
7440 | } | |
7441 | ||
7442 | /* Ignore functions with missing or invalid low and high pc attributes. */ | |
7443 | if (!dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL)) | |
7444 | { | |
ae4d0c03 PM |
7445 | attr = dwarf2_attr (die, DW_AT_external, cu); |
7446 | if (!attr || !DW_UNSND (attr)) | |
7447 | complaint (&symfile_complaints, | |
3e43a32a MS |
7448 | _("cannot get low and high bounds " |
7449 | "for subprogram DIE at %d"), | |
b64f50a1 | 7450 | die->offset.sect_off); |
e8d05480 JB |
7451 | return; |
7452 | } | |
c906108c SS |
7453 | |
7454 | lowpc += baseaddr; | |
7455 | highpc += baseaddr; | |
7456 | ||
34eaf542 TT |
7457 | /* If we have any template arguments, then we must allocate a |
7458 | different sort of symbol. */ | |
7459 | for (child_die = die->child; child_die; child_die = sibling_die (child_die)) | |
7460 | { | |
7461 | if (child_die->tag == DW_TAG_template_type_param | |
7462 | || child_die->tag == DW_TAG_template_value_param) | |
7463 | { | |
7464 | templ_func = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
7465 | struct template_symbol); | |
7466 | templ_func->base.is_cplus_template_function = 1; | |
7467 | break; | |
7468 | } | |
7469 | } | |
7470 | ||
c906108c | 7471 | new = push_context (0, lowpc); |
34eaf542 TT |
7472 | new->name = new_symbol_full (die, read_type_die (die, cu), cu, |
7473 | (struct symbol *) templ_func); | |
4c2df51b | 7474 | |
4cecd739 DJ |
7475 | /* If there is a location expression for DW_AT_frame_base, record |
7476 | it. */ | |
e142c38c | 7477 | attr = dwarf2_attr (die, DW_AT_frame_base, cu); |
4c2df51b | 7478 | if (attr) |
c034e007 AC |
7479 | /* FIXME: cagney/2004-01-26: The DW_AT_frame_base's location |
7480 | expression is being recorded directly in the function's symbol | |
7481 | and not in a separate frame-base object. I guess this hack is | |
7482 | to avoid adding some sort of frame-base adjunct/annex to the | |
7483 | function's symbol :-(. The problem with doing this is that it | |
7484 | results in a function symbol with a location expression that | |
7485 | has nothing to do with the location of the function, ouch! The | |
7486 | relationship should be: a function's symbol has-a frame base; a | |
7487 | frame-base has-a location expression. */ | |
e7c27a73 | 7488 | dwarf2_symbol_mark_computed (attr, new->name, cu); |
4c2df51b | 7489 | |
e142c38c | 7490 | cu->list_in_scope = &local_symbols; |
c906108c | 7491 | |
639d11d3 | 7492 | if (die->child != NULL) |
c906108c | 7493 | { |
639d11d3 | 7494 | child_die = die->child; |
c906108c SS |
7495 | while (child_die && child_die->tag) |
7496 | { | |
34eaf542 TT |
7497 | if (child_die->tag == DW_TAG_template_type_param |
7498 | || child_die->tag == DW_TAG_template_value_param) | |
7499 | { | |
7500 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
7501 | ||
f1078f66 DJ |
7502 | if (arg != NULL) |
7503 | VEC_safe_push (symbolp, template_args, arg); | |
34eaf542 TT |
7504 | } |
7505 | else | |
7506 | process_die (child_die, cu); | |
c906108c SS |
7507 | child_die = sibling_die (child_die); |
7508 | } | |
7509 | } | |
7510 | ||
d389af10 JK |
7511 | inherit_abstract_dies (die, cu); |
7512 | ||
4a811a97 UW |
7513 | /* If we have a DW_AT_specification, we might need to import using |
7514 | directives from the context of the specification DIE. See the | |
7515 | comment in determine_prefix. */ | |
7516 | if (cu->language == language_cplus | |
7517 | && dwarf2_attr (die, DW_AT_specification, cu)) | |
7518 | { | |
7519 | struct dwarf2_cu *spec_cu = cu; | |
7520 | struct die_info *spec_die = die_specification (die, &spec_cu); | |
7521 | ||
7522 | while (spec_die) | |
7523 | { | |
7524 | child_die = spec_die->child; | |
7525 | while (child_die && child_die->tag) | |
7526 | { | |
7527 | if (child_die->tag == DW_TAG_imported_module) | |
7528 | process_die (child_die, spec_cu); | |
7529 | child_die = sibling_die (child_die); | |
7530 | } | |
7531 | ||
7532 | /* In some cases, GCC generates specification DIEs that | |
7533 | themselves contain DW_AT_specification attributes. */ | |
7534 | spec_die = die_specification (spec_die, &spec_cu); | |
7535 | } | |
7536 | } | |
7537 | ||
c906108c SS |
7538 | new = pop_context (); |
7539 | /* Make a block for the local symbols within. */ | |
801e3a5b JB |
7540 | block = finish_block (new->name, &local_symbols, new->old_blocks, |
7541 | lowpc, highpc, objfile); | |
7542 | ||
df8a16a1 | 7543 | /* For C++, set the block's scope. */ |
f55ee35c | 7544 | if (cu->language == language_cplus || cu->language == language_fortran) |
df8a16a1 | 7545 | cp_set_block_scope (new->name, block, &objfile->objfile_obstack, |
0114d602 | 7546 | determine_prefix (die, cu), |
df8a16a1 DJ |
7547 | processing_has_namespace_info); |
7548 | ||
801e3a5b JB |
7549 | /* If we have address ranges, record them. */ |
7550 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
6e70227d | 7551 | |
34eaf542 TT |
7552 | /* Attach template arguments to function. */ |
7553 | if (! VEC_empty (symbolp, template_args)) | |
7554 | { | |
7555 | gdb_assert (templ_func != NULL); | |
7556 | ||
7557 | templ_func->n_template_arguments = VEC_length (symbolp, template_args); | |
7558 | templ_func->template_arguments | |
7559 | = obstack_alloc (&objfile->objfile_obstack, | |
7560 | (templ_func->n_template_arguments | |
7561 | * sizeof (struct symbol *))); | |
7562 | memcpy (templ_func->template_arguments, | |
7563 | VEC_address (symbolp, template_args), | |
7564 | (templ_func->n_template_arguments * sizeof (struct symbol *))); | |
7565 | VEC_free (symbolp, template_args); | |
7566 | } | |
7567 | ||
208d8187 JB |
7568 | /* In C++, we can have functions nested inside functions (e.g., when |
7569 | a function declares a class that has methods). This means that | |
7570 | when we finish processing a function scope, we may need to go | |
7571 | back to building a containing block's symbol lists. */ | |
7572 | local_symbols = new->locals; | |
7573 | param_symbols = new->params; | |
27aa8d6a | 7574 | using_directives = new->using_directives; |
208d8187 | 7575 | |
921e78cf JB |
7576 | /* If we've finished processing a top-level function, subsequent |
7577 | symbols go in the file symbol list. */ | |
7578 | if (outermost_context_p ()) | |
e142c38c | 7579 | cu->list_in_scope = &file_symbols; |
c906108c SS |
7580 | } |
7581 | ||
7582 | /* Process all the DIES contained within a lexical block scope. Start | |
7583 | a new scope, process the dies, and then close the scope. */ | |
7584 | ||
7585 | static void | |
e7c27a73 | 7586 | read_lexical_block_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 7587 | { |
e7c27a73 | 7588 | struct objfile *objfile = cu->objfile; |
52f0bd74 | 7589 | struct context_stack *new; |
c906108c SS |
7590 | CORE_ADDR lowpc, highpc; |
7591 | struct die_info *child_die; | |
e142c38c DJ |
7592 | CORE_ADDR baseaddr; |
7593 | ||
7594 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c SS |
7595 | |
7596 | /* Ignore blocks with missing or invalid low and high pc attributes. */ | |
af34e669 DJ |
7597 | /* ??? Perhaps consider discontiguous blocks defined by DW_AT_ranges |
7598 | as multiple lexical blocks? Handling children in a sane way would | |
6e70227d | 7599 | be nasty. Might be easier to properly extend generic blocks to |
af34e669 | 7600 | describe ranges. */ |
d85a05f0 | 7601 | if (!dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL)) |
c906108c SS |
7602 | return; |
7603 | lowpc += baseaddr; | |
7604 | highpc += baseaddr; | |
7605 | ||
7606 | push_context (0, lowpc); | |
639d11d3 | 7607 | if (die->child != NULL) |
c906108c | 7608 | { |
639d11d3 | 7609 | child_die = die->child; |
c906108c SS |
7610 | while (child_die && child_die->tag) |
7611 | { | |
e7c27a73 | 7612 | process_die (child_die, cu); |
c906108c SS |
7613 | child_die = sibling_die (child_die); |
7614 | } | |
7615 | } | |
7616 | new = pop_context (); | |
7617 | ||
8540c487 | 7618 | if (local_symbols != NULL || using_directives != NULL) |
c906108c | 7619 | { |
801e3a5b JB |
7620 | struct block *block |
7621 | = finish_block (0, &local_symbols, new->old_blocks, new->start_addr, | |
7622 | highpc, objfile); | |
7623 | ||
7624 | /* Note that recording ranges after traversing children, as we | |
7625 | do here, means that recording a parent's ranges entails | |
7626 | walking across all its children's ranges as they appear in | |
7627 | the address map, which is quadratic behavior. | |
7628 | ||
7629 | It would be nicer to record the parent's ranges before | |
7630 | traversing its children, simply overriding whatever you find | |
7631 | there. But since we don't even decide whether to create a | |
7632 | block until after we've traversed its children, that's hard | |
7633 | to do. */ | |
7634 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
c906108c SS |
7635 | } |
7636 | local_symbols = new->locals; | |
27aa8d6a | 7637 | using_directives = new->using_directives; |
c906108c SS |
7638 | } |
7639 | ||
96408a79 SA |
7640 | /* Read in DW_TAG_GNU_call_site and insert it to CU->call_site_htab. */ |
7641 | ||
7642 | static void | |
7643 | read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu) | |
7644 | { | |
7645 | struct objfile *objfile = cu->objfile; | |
7646 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
7647 | CORE_ADDR pc, baseaddr; | |
7648 | struct attribute *attr; | |
7649 | struct call_site *call_site, call_site_local; | |
7650 | void **slot; | |
7651 | int nparams; | |
7652 | struct die_info *child_die; | |
7653 | ||
7654 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
7655 | ||
7656 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
7657 | if (!attr) | |
7658 | { | |
7659 | complaint (&symfile_complaints, | |
7660 | _("missing DW_AT_low_pc for DW_TAG_GNU_call_site " | |
7661 | "DIE 0x%x [in module %s]"), | |
b64f50a1 | 7662 | die->offset.sect_off, objfile->name); |
96408a79 SA |
7663 | return; |
7664 | } | |
7665 | pc = DW_ADDR (attr) + baseaddr; | |
7666 | ||
7667 | if (cu->call_site_htab == NULL) | |
7668 | cu->call_site_htab = htab_create_alloc_ex (16, core_addr_hash, core_addr_eq, | |
7669 | NULL, &objfile->objfile_obstack, | |
7670 | hashtab_obstack_allocate, NULL); | |
7671 | call_site_local.pc = pc; | |
7672 | slot = htab_find_slot (cu->call_site_htab, &call_site_local, INSERT); | |
7673 | if (*slot != NULL) | |
7674 | { | |
7675 | complaint (&symfile_complaints, | |
7676 | _("Duplicate PC %s for DW_TAG_GNU_call_site " | |
7677 | "DIE 0x%x [in module %s]"), | |
b64f50a1 | 7678 | paddress (gdbarch, pc), die->offset.sect_off, objfile->name); |
96408a79 SA |
7679 | return; |
7680 | } | |
7681 | ||
7682 | /* Count parameters at the caller. */ | |
7683 | ||
7684 | nparams = 0; | |
7685 | for (child_die = die->child; child_die && child_die->tag; | |
7686 | child_die = sibling_die (child_die)) | |
7687 | { | |
7688 | if (child_die->tag != DW_TAG_GNU_call_site_parameter) | |
7689 | { | |
7690 | complaint (&symfile_complaints, | |
7691 | _("Tag %d is not DW_TAG_GNU_call_site_parameter in " | |
7692 | "DW_TAG_GNU_call_site child DIE 0x%x [in module %s]"), | |
b64f50a1 | 7693 | child_die->tag, child_die->offset.sect_off, objfile->name); |
96408a79 SA |
7694 | continue; |
7695 | } | |
7696 | ||
7697 | nparams++; | |
7698 | } | |
7699 | ||
7700 | call_site = obstack_alloc (&objfile->objfile_obstack, | |
7701 | (sizeof (*call_site) | |
7702 | + (sizeof (*call_site->parameter) | |
7703 | * (nparams - 1)))); | |
7704 | *slot = call_site; | |
7705 | memset (call_site, 0, sizeof (*call_site) - sizeof (*call_site->parameter)); | |
7706 | call_site->pc = pc; | |
7707 | ||
7708 | if (dwarf2_flag_true_p (die, DW_AT_GNU_tail_call, cu)) | |
7709 | { | |
7710 | struct die_info *func_die; | |
7711 | ||
7712 | /* Skip also over DW_TAG_inlined_subroutine. */ | |
7713 | for (func_die = die->parent; | |
7714 | func_die && func_die->tag != DW_TAG_subprogram | |
7715 | && func_die->tag != DW_TAG_subroutine_type; | |
7716 | func_die = func_die->parent); | |
7717 | ||
7718 | /* DW_AT_GNU_all_call_sites is a superset | |
7719 | of DW_AT_GNU_all_tail_call_sites. */ | |
7720 | if (func_die | |
7721 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_call_sites, cu) | |
7722 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_tail_call_sites, cu)) | |
7723 | { | |
7724 | /* TYPE_TAIL_CALL_LIST is not interesting in functions where it is | |
7725 | not complete. But keep CALL_SITE for look ups via call_site_htab, | |
7726 | both the initial caller containing the real return address PC and | |
7727 | the final callee containing the current PC of a chain of tail | |
7728 | calls do not need to have the tail call list complete. But any | |
7729 | function candidate for a virtual tail call frame searched via | |
7730 | TYPE_TAIL_CALL_LIST must have the tail call list complete to be | |
7731 | determined unambiguously. */ | |
7732 | } | |
7733 | else | |
7734 | { | |
7735 | struct type *func_type = NULL; | |
7736 | ||
7737 | if (func_die) | |
7738 | func_type = get_die_type (func_die, cu); | |
7739 | if (func_type != NULL) | |
7740 | { | |
7741 | gdb_assert (TYPE_CODE (func_type) == TYPE_CODE_FUNC); | |
7742 | ||
7743 | /* Enlist this call site to the function. */ | |
7744 | call_site->tail_call_next = TYPE_TAIL_CALL_LIST (func_type); | |
7745 | TYPE_TAIL_CALL_LIST (func_type) = call_site; | |
7746 | } | |
7747 | else | |
7748 | complaint (&symfile_complaints, | |
7749 | _("Cannot find function owning DW_TAG_GNU_call_site " | |
7750 | "DIE 0x%x [in module %s]"), | |
b64f50a1 | 7751 | die->offset.sect_off, objfile->name); |
96408a79 SA |
7752 | } |
7753 | } | |
7754 | ||
7755 | attr = dwarf2_attr (die, DW_AT_GNU_call_site_target, cu); | |
7756 | if (attr == NULL) | |
7757 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
7758 | SET_FIELD_DWARF_BLOCK (call_site->target, NULL); | |
7759 | if (!attr || (attr_form_is_block (attr) && DW_BLOCK (attr)->size == 0)) | |
7760 | /* Keep NULL DWARF_BLOCK. */; | |
7761 | else if (attr_form_is_block (attr)) | |
7762 | { | |
7763 | struct dwarf2_locexpr_baton *dlbaton; | |
7764 | ||
7765 | dlbaton = obstack_alloc (&objfile->objfile_obstack, sizeof (*dlbaton)); | |
7766 | dlbaton->data = DW_BLOCK (attr)->data; | |
7767 | dlbaton->size = DW_BLOCK (attr)->size; | |
7768 | dlbaton->per_cu = cu->per_cu; | |
7769 | ||
7770 | SET_FIELD_DWARF_BLOCK (call_site->target, dlbaton); | |
7771 | } | |
7772 | else if (is_ref_attr (attr)) | |
7773 | { | |
96408a79 SA |
7774 | struct dwarf2_cu *target_cu = cu; |
7775 | struct die_info *target_die; | |
7776 | ||
7777 | target_die = follow_die_ref_or_sig (die, attr, &target_cu); | |
7778 | gdb_assert (target_cu->objfile == objfile); | |
7779 | if (die_is_declaration (target_die, target_cu)) | |
7780 | { | |
7781 | const char *target_physname; | |
7782 | ||
7783 | target_physname = dwarf2_physname (NULL, target_die, target_cu); | |
7784 | if (target_physname == NULL) | |
7785 | complaint (&symfile_complaints, | |
7786 | _("DW_AT_GNU_call_site_target target DIE has invalid " | |
7787 | "physname, for referencing DIE 0x%x [in module %s]"), | |
b64f50a1 | 7788 | die->offset.sect_off, objfile->name); |
96408a79 SA |
7789 | else |
7790 | SET_FIELD_PHYSNAME (call_site->target, (char *) target_physname); | |
7791 | } | |
7792 | else | |
7793 | { | |
7794 | CORE_ADDR lowpc; | |
7795 | ||
7796 | /* DW_AT_entry_pc should be preferred. */ | |
7797 | if (!dwarf2_get_pc_bounds (target_die, &lowpc, NULL, target_cu, NULL)) | |
7798 | complaint (&symfile_complaints, | |
7799 | _("DW_AT_GNU_call_site_target target DIE has invalid " | |
7800 | "low pc, for referencing DIE 0x%x [in module %s]"), | |
b64f50a1 | 7801 | die->offset.sect_off, objfile->name); |
96408a79 SA |
7802 | else |
7803 | SET_FIELD_PHYSADDR (call_site->target, lowpc + baseaddr); | |
7804 | } | |
7805 | } | |
7806 | else | |
7807 | complaint (&symfile_complaints, | |
7808 | _("DW_TAG_GNU_call_site DW_AT_GNU_call_site_target is neither " | |
7809 | "block nor reference, for DIE 0x%x [in module %s]"), | |
b64f50a1 | 7810 | die->offset.sect_off, objfile->name); |
96408a79 SA |
7811 | |
7812 | call_site->per_cu = cu->per_cu; | |
7813 | ||
7814 | for (child_die = die->child; | |
7815 | child_die && child_die->tag; | |
7816 | child_die = sibling_die (child_die)) | |
7817 | { | |
96408a79 SA |
7818 | struct call_site_parameter *parameter; |
7819 | ||
7820 | if (child_die->tag != DW_TAG_GNU_call_site_parameter) | |
7821 | { | |
7822 | /* Already printed the complaint above. */ | |
7823 | continue; | |
7824 | } | |
7825 | ||
7826 | gdb_assert (call_site->parameter_count < nparams); | |
7827 | parameter = &call_site->parameter[call_site->parameter_count]; | |
7828 | ||
7829 | /* DW_AT_location specifies the register number. Value of the data | |
7830 | assumed for the register is contained in DW_AT_GNU_call_site_value. */ | |
7831 | ||
7832 | attr = dwarf2_attr (child_die, DW_AT_location, cu); | |
7833 | if (!attr || !attr_form_is_block (attr)) | |
7834 | { | |
7835 | complaint (&symfile_complaints, | |
7836 | _("No DW_FORM_block* DW_AT_location for " | |
7837 | "DW_TAG_GNU_call_site child DIE 0x%x [in module %s]"), | |
b64f50a1 | 7838 | child_die->offset.sect_off, objfile->name); |
96408a79 SA |
7839 | continue; |
7840 | } | |
7841 | parameter->dwarf_reg = dwarf_block_to_dwarf_reg (DW_BLOCK (attr)->data, | |
7842 | &DW_BLOCK (attr)->data[DW_BLOCK (attr)->size]); | |
7843 | if (parameter->dwarf_reg == -1 | |
7844 | && !dwarf_block_to_sp_offset (gdbarch, DW_BLOCK (attr)->data, | |
7845 | &DW_BLOCK (attr)->data[DW_BLOCK (attr)->size], | |
7846 | ¶meter->fb_offset)) | |
7847 | { | |
7848 | complaint (&symfile_complaints, | |
7849 | _("Only single DW_OP_reg or DW_OP_fbreg is supported " | |
7850 | "for DW_FORM_block* DW_AT_location for " | |
7851 | "DW_TAG_GNU_call_site child DIE 0x%x [in module %s]"), | |
b64f50a1 | 7852 | child_die->offset.sect_off, objfile->name); |
96408a79 SA |
7853 | continue; |
7854 | } | |
7855 | ||
7856 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_value, cu); | |
7857 | if (!attr_form_is_block (attr)) | |
7858 | { | |
7859 | complaint (&symfile_complaints, | |
7860 | _("No DW_FORM_block* DW_AT_GNU_call_site_value for " | |
7861 | "DW_TAG_GNU_call_site child DIE 0x%x [in module %s]"), | |
b64f50a1 | 7862 | child_die->offset.sect_off, objfile->name); |
96408a79 SA |
7863 | continue; |
7864 | } | |
7865 | parameter->value = DW_BLOCK (attr)->data; | |
7866 | parameter->value_size = DW_BLOCK (attr)->size; | |
7867 | ||
7868 | /* Parameters are not pre-cleared by memset above. */ | |
7869 | parameter->data_value = NULL; | |
7870 | parameter->data_value_size = 0; | |
7871 | call_site->parameter_count++; | |
7872 | ||
7873 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_data_value, cu); | |
7874 | if (attr) | |
7875 | { | |
7876 | if (!attr_form_is_block (attr)) | |
7877 | complaint (&symfile_complaints, | |
7878 | _("No DW_FORM_block* DW_AT_GNU_call_site_data_value for " | |
7879 | "DW_TAG_GNU_call_site child DIE 0x%x [in module %s]"), | |
b64f50a1 | 7880 | child_die->offset.sect_off, objfile->name); |
96408a79 SA |
7881 | else |
7882 | { | |
7883 | parameter->data_value = DW_BLOCK (attr)->data; | |
7884 | parameter->data_value_size = DW_BLOCK (attr)->size; | |
7885 | } | |
7886 | } | |
7887 | } | |
7888 | } | |
7889 | ||
43039443 | 7890 | /* Get low and high pc attributes from DW_AT_ranges attribute value OFFSET. |
ff013f42 JK |
7891 | Return 1 if the attributes are present and valid, otherwise, return 0. |
7892 | If RANGES_PST is not NULL we should setup `objfile->psymtabs_addrmap'. */ | |
43039443 JK |
7893 | |
7894 | static int | |
7895 | dwarf2_ranges_read (unsigned offset, CORE_ADDR *low_return, | |
ff013f42 JK |
7896 | CORE_ADDR *high_return, struct dwarf2_cu *cu, |
7897 | struct partial_symtab *ranges_pst) | |
43039443 JK |
7898 | { |
7899 | struct objfile *objfile = cu->objfile; | |
7900 | struct comp_unit_head *cu_header = &cu->header; | |
7901 | bfd *obfd = objfile->obfd; | |
7902 | unsigned int addr_size = cu_header->addr_size; | |
7903 | CORE_ADDR mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
7904 | /* Base address selection entry. */ | |
7905 | CORE_ADDR base; | |
7906 | int found_base; | |
7907 | unsigned int dummy; | |
7908 | gdb_byte *buffer; | |
7909 | CORE_ADDR marker; | |
7910 | int low_set; | |
7911 | CORE_ADDR low = 0; | |
7912 | CORE_ADDR high = 0; | |
ff013f42 | 7913 | CORE_ADDR baseaddr; |
43039443 | 7914 | |
d00adf39 DE |
7915 | found_base = cu->base_known; |
7916 | base = cu->base_address; | |
43039443 | 7917 | |
be391dca | 7918 | dwarf2_read_section (objfile, &dwarf2_per_objfile->ranges); |
dce234bc | 7919 | if (offset >= dwarf2_per_objfile->ranges.size) |
43039443 JK |
7920 | { |
7921 | complaint (&symfile_complaints, | |
7922 | _("Offset %d out of bounds for DW_AT_ranges attribute"), | |
7923 | offset); | |
7924 | return 0; | |
7925 | } | |
dce234bc | 7926 | buffer = dwarf2_per_objfile->ranges.buffer + offset; |
43039443 JK |
7927 | |
7928 | /* Read in the largest possible address. */ | |
7929 | marker = read_address (obfd, buffer, cu, &dummy); | |
7930 | if ((marker & mask) == mask) | |
7931 | { | |
7932 | /* If we found the largest possible address, then | |
7933 | read the base address. */ | |
7934 | base = read_address (obfd, buffer + addr_size, cu, &dummy); | |
7935 | buffer += 2 * addr_size; | |
7936 | offset += 2 * addr_size; | |
7937 | found_base = 1; | |
7938 | } | |
7939 | ||
7940 | low_set = 0; | |
7941 | ||
e7030f15 | 7942 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
ff013f42 | 7943 | |
43039443 JK |
7944 | while (1) |
7945 | { | |
7946 | CORE_ADDR range_beginning, range_end; | |
7947 | ||
7948 | range_beginning = read_address (obfd, buffer, cu, &dummy); | |
7949 | buffer += addr_size; | |
7950 | range_end = read_address (obfd, buffer, cu, &dummy); | |
7951 | buffer += addr_size; | |
7952 | offset += 2 * addr_size; | |
7953 | ||
7954 | /* An end of list marker is a pair of zero addresses. */ | |
7955 | if (range_beginning == 0 && range_end == 0) | |
7956 | /* Found the end of list entry. */ | |
7957 | break; | |
7958 | ||
7959 | /* Each base address selection entry is a pair of 2 values. | |
7960 | The first is the largest possible address, the second is | |
7961 | the base address. Check for a base address here. */ | |
7962 | if ((range_beginning & mask) == mask) | |
7963 | { | |
7964 | /* If we found the largest possible address, then | |
7965 | read the base address. */ | |
7966 | base = read_address (obfd, buffer + addr_size, cu, &dummy); | |
7967 | found_base = 1; | |
7968 | continue; | |
7969 | } | |
7970 | ||
7971 | if (!found_base) | |
7972 | { | |
7973 | /* We have no valid base address for the ranges | |
7974 | data. */ | |
7975 | complaint (&symfile_complaints, | |
7976 | _("Invalid .debug_ranges data (no base address)")); | |
7977 | return 0; | |
7978 | } | |
7979 | ||
9277c30c UW |
7980 | if (range_beginning > range_end) |
7981 | { | |
7982 | /* Inverted range entries are invalid. */ | |
7983 | complaint (&symfile_complaints, | |
7984 | _("Invalid .debug_ranges data (inverted range)")); | |
7985 | return 0; | |
7986 | } | |
7987 | ||
7988 | /* Empty range entries have no effect. */ | |
7989 | if (range_beginning == range_end) | |
7990 | continue; | |
7991 | ||
43039443 JK |
7992 | range_beginning += base; |
7993 | range_end += base; | |
7994 | ||
9277c30c | 7995 | if (ranges_pst != NULL) |
ff013f42 | 7996 | addrmap_set_empty (objfile->psymtabs_addrmap, |
3e43a32a MS |
7997 | range_beginning + baseaddr, |
7998 | range_end - 1 + baseaddr, | |
ff013f42 JK |
7999 | ranges_pst); |
8000 | ||
43039443 JK |
8001 | /* FIXME: This is recording everything as a low-high |
8002 | segment of consecutive addresses. We should have a | |
8003 | data structure for discontiguous block ranges | |
8004 | instead. */ | |
8005 | if (! low_set) | |
8006 | { | |
8007 | low = range_beginning; | |
8008 | high = range_end; | |
8009 | low_set = 1; | |
8010 | } | |
8011 | else | |
8012 | { | |
8013 | if (range_beginning < low) | |
8014 | low = range_beginning; | |
8015 | if (range_end > high) | |
8016 | high = range_end; | |
8017 | } | |
8018 | } | |
8019 | ||
8020 | if (! low_set) | |
8021 | /* If the first entry is an end-of-list marker, the range | |
8022 | describes an empty scope, i.e. no instructions. */ | |
8023 | return 0; | |
8024 | ||
8025 | if (low_return) | |
8026 | *low_return = low; | |
8027 | if (high_return) | |
8028 | *high_return = high; | |
8029 | return 1; | |
8030 | } | |
8031 | ||
af34e669 DJ |
8032 | /* Get low and high pc attributes from a die. Return 1 if the attributes |
8033 | are present and valid, otherwise, return 0. Return -1 if the range is | |
8034 | discontinuous, i.e. derived from DW_AT_ranges information. */ | |
380bca97 | 8035 | |
c906108c | 8036 | static int |
af34e669 | 8037 | dwarf2_get_pc_bounds (struct die_info *die, CORE_ADDR *lowpc, |
d85a05f0 DJ |
8038 | CORE_ADDR *highpc, struct dwarf2_cu *cu, |
8039 | struct partial_symtab *pst) | |
c906108c SS |
8040 | { |
8041 | struct attribute *attr; | |
91da1414 | 8042 | struct attribute *attr_high; |
af34e669 DJ |
8043 | CORE_ADDR low = 0; |
8044 | CORE_ADDR high = 0; | |
8045 | int ret = 0; | |
c906108c | 8046 | |
91da1414 MW |
8047 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
8048 | if (attr_high) | |
af34e669 | 8049 | { |
e142c38c | 8050 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
af34e669 | 8051 | if (attr) |
91da1414 MW |
8052 | { |
8053 | low = DW_ADDR (attr); | |
3019eac3 DE |
8054 | if (attr_high->form == DW_FORM_addr |
8055 | || attr_high->form == DW_FORM_GNU_addr_index) | |
91da1414 MW |
8056 | high = DW_ADDR (attr_high); |
8057 | else | |
8058 | high = low + DW_UNSND (attr_high); | |
8059 | } | |
af34e669 DJ |
8060 | else |
8061 | /* Found high w/o low attribute. */ | |
8062 | return 0; | |
8063 | ||
8064 | /* Found consecutive range of addresses. */ | |
8065 | ret = 1; | |
8066 | } | |
c906108c | 8067 | else |
af34e669 | 8068 | { |
e142c38c | 8069 | attr = dwarf2_attr (die, DW_AT_ranges, cu); |
af34e669 DJ |
8070 | if (attr != NULL) |
8071 | { | |
af34e669 | 8072 | /* Value of the DW_AT_ranges attribute is the offset in the |
a604369a | 8073 | .debug_ranges section. */ |
d85a05f0 | 8074 | if (!dwarf2_ranges_read (DW_UNSND (attr), &low, &high, cu, pst)) |
af34e669 | 8075 | return 0; |
43039443 | 8076 | /* Found discontinuous range of addresses. */ |
af34e669 DJ |
8077 | ret = -1; |
8078 | } | |
8079 | } | |
c906108c | 8080 | |
9373cf26 JK |
8081 | /* read_partial_die has also the strict LOW < HIGH requirement. */ |
8082 | if (high <= low) | |
c906108c SS |
8083 | return 0; |
8084 | ||
8085 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
8086 | eliminate duplicate copies of functions and vtables and such. | |
8087 | The linker will arbitrarily choose one and discard the others. | |
8088 | The AT_*_pc values for such functions refer to local labels in | |
8089 | these sections. If the section from that file was discarded, the | |
8090 | labels are not in the output, so the relocs get a value of 0. | |
8091 | If this is a discarded function, mark the pc bounds as invalid, | |
8092 | so that GDB will ignore it. */ | |
72dca2f5 | 8093 | if (low == 0 && !dwarf2_per_objfile->has_section_at_zero) |
c906108c SS |
8094 | return 0; |
8095 | ||
8096 | *lowpc = low; | |
96408a79 SA |
8097 | if (highpc) |
8098 | *highpc = high; | |
af34e669 | 8099 | return ret; |
c906108c SS |
8100 | } |
8101 | ||
b084d499 JB |
8102 | /* Assuming that DIE represents a subprogram DIE or a lexical block, get |
8103 | its low and high PC addresses. Do nothing if these addresses could not | |
8104 | be determined. Otherwise, set LOWPC to the low address if it is smaller, | |
8105 | and HIGHPC to the high address if greater than HIGHPC. */ | |
8106 | ||
8107 | static void | |
8108 | dwarf2_get_subprogram_pc_bounds (struct die_info *die, | |
8109 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
8110 | struct dwarf2_cu *cu) | |
8111 | { | |
8112 | CORE_ADDR low, high; | |
8113 | struct die_info *child = die->child; | |
8114 | ||
d85a05f0 | 8115 | if (dwarf2_get_pc_bounds (die, &low, &high, cu, NULL)) |
b084d499 JB |
8116 | { |
8117 | *lowpc = min (*lowpc, low); | |
8118 | *highpc = max (*highpc, high); | |
8119 | } | |
8120 | ||
8121 | /* If the language does not allow nested subprograms (either inside | |
8122 | subprograms or lexical blocks), we're done. */ | |
8123 | if (cu->language != language_ada) | |
8124 | return; | |
6e70227d | 8125 | |
b084d499 JB |
8126 | /* Check all the children of the given DIE. If it contains nested |
8127 | subprograms, then check their pc bounds. Likewise, we need to | |
8128 | check lexical blocks as well, as they may also contain subprogram | |
8129 | definitions. */ | |
8130 | while (child && child->tag) | |
8131 | { | |
8132 | if (child->tag == DW_TAG_subprogram | |
8133 | || child->tag == DW_TAG_lexical_block) | |
8134 | dwarf2_get_subprogram_pc_bounds (child, lowpc, highpc, cu); | |
8135 | child = sibling_die (child); | |
8136 | } | |
8137 | } | |
8138 | ||
fae299cd DC |
8139 | /* Get the low and high pc's represented by the scope DIE, and store |
8140 | them in *LOWPC and *HIGHPC. If the correct values can't be | |
8141 | determined, set *LOWPC to -1 and *HIGHPC to 0. */ | |
8142 | ||
8143 | static void | |
8144 | get_scope_pc_bounds (struct die_info *die, | |
8145 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
8146 | struct dwarf2_cu *cu) | |
8147 | { | |
8148 | CORE_ADDR best_low = (CORE_ADDR) -1; | |
8149 | CORE_ADDR best_high = (CORE_ADDR) 0; | |
8150 | CORE_ADDR current_low, current_high; | |
8151 | ||
d85a05f0 | 8152 | if (dwarf2_get_pc_bounds (die, ¤t_low, ¤t_high, cu, NULL)) |
fae299cd DC |
8153 | { |
8154 | best_low = current_low; | |
8155 | best_high = current_high; | |
8156 | } | |
8157 | else | |
8158 | { | |
8159 | struct die_info *child = die->child; | |
8160 | ||
8161 | while (child && child->tag) | |
8162 | { | |
8163 | switch (child->tag) { | |
8164 | case DW_TAG_subprogram: | |
b084d499 | 8165 | dwarf2_get_subprogram_pc_bounds (child, &best_low, &best_high, cu); |
fae299cd DC |
8166 | break; |
8167 | case DW_TAG_namespace: | |
f55ee35c | 8168 | case DW_TAG_module: |
fae299cd DC |
8169 | /* FIXME: carlton/2004-01-16: Should we do this for |
8170 | DW_TAG_class_type/DW_TAG_structure_type, too? I think | |
8171 | that current GCC's always emit the DIEs corresponding | |
8172 | to definitions of methods of classes as children of a | |
8173 | DW_TAG_compile_unit or DW_TAG_namespace (as opposed to | |
8174 | the DIEs giving the declarations, which could be | |
8175 | anywhere). But I don't see any reason why the | |
8176 | standards says that they have to be there. */ | |
8177 | get_scope_pc_bounds (child, ¤t_low, ¤t_high, cu); | |
8178 | ||
8179 | if (current_low != ((CORE_ADDR) -1)) | |
8180 | { | |
8181 | best_low = min (best_low, current_low); | |
8182 | best_high = max (best_high, current_high); | |
8183 | } | |
8184 | break; | |
8185 | default: | |
0963b4bd | 8186 | /* Ignore. */ |
fae299cd DC |
8187 | break; |
8188 | } | |
8189 | ||
8190 | child = sibling_die (child); | |
8191 | } | |
8192 | } | |
8193 | ||
8194 | *lowpc = best_low; | |
8195 | *highpc = best_high; | |
8196 | } | |
8197 | ||
801e3a5b JB |
8198 | /* Record the address ranges for BLOCK, offset by BASEADDR, as given |
8199 | in DIE. */ | |
380bca97 | 8200 | |
801e3a5b JB |
8201 | static void |
8202 | dwarf2_record_block_ranges (struct die_info *die, struct block *block, | |
8203 | CORE_ADDR baseaddr, struct dwarf2_cu *cu) | |
8204 | { | |
bb5ed363 | 8205 | struct objfile *objfile = cu->objfile; |
801e3a5b | 8206 | struct attribute *attr; |
91da1414 | 8207 | struct attribute *attr_high; |
801e3a5b | 8208 | |
91da1414 MW |
8209 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
8210 | if (attr_high) | |
801e3a5b | 8211 | { |
801e3a5b JB |
8212 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
8213 | if (attr) | |
8214 | { | |
8215 | CORE_ADDR low = DW_ADDR (attr); | |
91da1414 | 8216 | CORE_ADDR high; |
3019eac3 DE |
8217 | if (attr_high->form == DW_FORM_addr |
8218 | || attr_high->form == DW_FORM_GNU_addr_index) | |
91da1414 MW |
8219 | high = DW_ADDR (attr_high); |
8220 | else | |
8221 | high = low + DW_UNSND (attr_high); | |
9a619af0 | 8222 | |
801e3a5b JB |
8223 | record_block_range (block, baseaddr + low, baseaddr + high - 1); |
8224 | } | |
8225 | } | |
8226 | ||
8227 | attr = dwarf2_attr (die, DW_AT_ranges, cu); | |
8228 | if (attr) | |
8229 | { | |
bb5ed363 | 8230 | bfd *obfd = objfile->obfd; |
801e3a5b JB |
8231 | |
8232 | /* The value of the DW_AT_ranges attribute is the offset of the | |
8233 | address range list in the .debug_ranges section. */ | |
8234 | unsigned long offset = DW_UNSND (attr); | |
dce234bc | 8235 | gdb_byte *buffer = dwarf2_per_objfile->ranges.buffer + offset; |
801e3a5b JB |
8236 | |
8237 | /* For some target architectures, but not others, the | |
8238 | read_address function sign-extends the addresses it returns. | |
8239 | To recognize base address selection entries, we need a | |
8240 | mask. */ | |
8241 | unsigned int addr_size = cu->header.addr_size; | |
8242 | CORE_ADDR base_select_mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
8243 | ||
8244 | /* The base address, to which the next pair is relative. Note | |
8245 | that this 'base' is a DWARF concept: most entries in a range | |
8246 | list are relative, to reduce the number of relocs against the | |
8247 | debugging information. This is separate from this function's | |
8248 | 'baseaddr' argument, which GDB uses to relocate debugging | |
8249 | information from a shared library based on the address at | |
8250 | which the library was loaded. */ | |
d00adf39 DE |
8251 | CORE_ADDR base = cu->base_address; |
8252 | int base_known = cu->base_known; | |
801e3a5b | 8253 | |
be391dca | 8254 | gdb_assert (dwarf2_per_objfile->ranges.readin); |
dce234bc | 8255 | if (offset >= dwarf2_per_objfile->ranges.size) |
801e3a5b JB |
8256 | { |
8257 | complaint (&symfile_complaints, | |
8258 | _("Offset %lu out of bounds for DW_AT_ranges attribute"), | |
8259 | offset); | |
8260 | return; | |
8261 | } | |
8262 | ||
8263 | for (;;) | |
8264 | { | |
8265 | unsigned int bytes_read; | |
8266 | CORE_ADDR start, end; | |
8267 | ||
8268 | start = read_address (obfd, buffer, cu, &bytes_read); | |
8269 | buffer += bytes_read; | |
8270 | end = read_address (obfd, buffer, cu, &bytes_read); | |
8271 | buffer += bytes_read; | |
8272 | ||
8273 | /* Did we find the end of the range list? */ | |
8274 | if (start == 0 && end == 0) | |
8275 | break; | |
8276 | ||
8277 | /* Did we find a base address selection entry? */ | |
8278 | else if ((start & base_select_mask) == base_select_mask) | |
8279 | { | |
8280 | base = end; | |
8281 | base_known = 1; | |
8282 | } | |
8283 | ||
8284 | /* We found an ordinary address range. */ | |
8285 | else | |
8286 | { | |
8287 | if (!base_known) | |
8288 | { | |
8289 | complaint (&symfile_complaints, | |
3e43a32a MS |
8290 | _("Invalid .debug_ranges data " |
8291 | "(no base address)")); | |
801e3a5b JB |
8292 | return; |
8293 | } | |
8294 | ||
9277c30c UW |
8295 | if (start > end) |
8296 | { | |
8297 | /* Inverted range entries are invalid. */ | |
8298 | complaint (&symfile_complaints, | |
8299 | _("Invalid .debug_ranges data " | |
8300 | "(inverted range)")); | |
8301 | return; | |
8302 | } | |
8303 | ||
8304 | /* Empty range entries have no effect. */ | |
8305 | if (start == end) | |
8306 | continue; | |
8307 | ||
6e70227d DE |
8308 | record_block_range (block, |
8309 | baseaddr + base + start, | |
801e3a5b JB |
8310 | baseaddr + base + end - 1); |
8311 | } | |
8312 | } | |
8313 | } | |
8314 | } | |
8315 | ||
685b1105 JK |
8316 | /* Check whether the producer field indicates either of GCC < 4.6, or the |
8317 | Intel C/C++ compiler, and cache the result in CU. */ | |
60d5a603 | 8318 | |
685b1105 JK |
8319 | static void |
8320 | check_producer (struct dwarf2_cu *cu) | |
60d5a603 JK |
8321 | { |
8322 | const char *cs; | |
8323 | int major, minor, release; | |
8324 | ||
8325 | if (cu->producer == NULL) | |
8326 | { | |
8327 | /* For unknown compilers expect their behavior is DWARF version | |
8328 | compliant. | |
8329 | ||
8330 | GCC started to support .debug_types sections by -gdwarf-4 since | |
8331 | gcc-4.5.x. As the .debug_types sections are missing DW_AT_producer | |
8332 | for their space efficiency GDB cannot workaround gcc-4.5.x -gdwarf-4 | |
8333 | combination. gcc-4.5.x -gdwarf-4 binaries have DW_AT_accessibility | |
8334 | interpreted incorrectly by GDB now - GCC PR debug/48229. */ | |
60d5a603 | 8335 | } |
685b1105 | 8336 | else if (strncmp (cu->producer, "GNU ", strlen ("GNU ")) == 0) |
60d5a603 | 8337 | { |
685b1105 JK |
8338 | /* Skip any identifier after "GNU " - such as "C++" or "Java". */ |
8339 | ||
ba919b58 TT |
8340 | cs = &cu->producer[strlen ("GNU ")]; |
8341 | while (*cs && !isdigit (*cs)) | |
8342 | cs++; | |
8343 | if (sscanf (cs, "%d.%d.%d", &major, &minor, &release) != 3) | |
8344 | { | |
8345 | /* Not recognized as GCC. */ | |
8346 | } | |
8347 | else | |
685b1105 JK |
8348 | cu->producer_is_gxx_lt_4_6 = major < 4 || (major == 4 && minor < 6); |
8349 | } | |
8350 | else if (strncmp (cu->producer, "Intel(R) C", strlen ("Intel(R) C")) == 0) | |
8351 | cu->producer_is_icc = 1; | |
8352 | else | |
8353 | { | |
8354 | /* For other non-GCC compilers, expect their behavior is DWARF version | |
8355 | compliant. */ | |
60d5a603 JK |
8356 | } |
8357 | ||
ba919b58 | 8358 | cu->checked_producer = 1; |
685b1105 | 8359 | } |
ba919b58 | 8360 | |
685b1105 JK |
8361 | /* Check for GCC PR debug/45124 fix which is not present in any G++ version up |
8362 | to 4.5.any while it is present already in G++ 4.6.0 - the PR has been fixed | |
8363 | during 4.6.0 experimental. */ | |
8364 | ||
8365 | static int | |
8366 | producer_is_gxx_lt_4_6 (struct dwarf2_cu *cu) | |
8367 | { | |
8368 | if (!cu->checked_producer) | |
8369 | check_producer (cu); | |
8370 | ||
8371 | return cu->producer_is_gxx_lt_4_6; | |
60d5a603 JK |
8372 | } |
8373 | ||
8374 | /* Return the default accessibility type if it is not overriden by | |
8375 | DW_AT_accessibility. */ | |
8376 | ||
8377 | static enum dwarf_access_attribute | |
8378 | dwarf2_default_access_attribute (struct die_info *die, struct dwarf2_cu *cu) | |
8379 | { | |
8380 | if (cu->header.version < 3 || producer_is_gxx_lt_4_6 (cu)) | |
8381 | { | |
8382 | /* The default DWARF 2 accessibility for members is public, the default | |
8383 | accessibility for inheritance is private. */ | |
8384 | ||
8385 | if (die->tag != DW_TAG_inheritance) | |
8386 | return DW_ACCESS_public; | |
8387 | else | |
8388 | return DW_ACCESS_private; | |
8389 | } | |
8390 | else | |
8391 | { | |
8392 | /* DWARF 3+ defines the default accessibility a different way. The same | |
8393 | rules apply now for DW_TAG_inheritance as for the members and it only | |
8394 | depends on the container kind. */ | |
8395 | ||
8396 | if (die->parent->tag == DW_TAG_class_type) | |
8397 | return DW_ACCESS_private; | |
8398 | else | |
8399 | return DW_ACCESS_public; | |
8400 | } | |
8401 | } | |
8402 | ||
74ac6d43 TT |
8403 | /* Look for DW_AT_data_member_location. Set *OFFSET to the byte |
8404 | offset. If the attribute was not found return 0, otherwise return | |
8405 | 1. If it was found but could not properly be handled, set *OFFSET | |
8406 | to 0. */ | |
8407 | ||
8408 | static int | |
8409 | handle_data_member_location (struct die_info *die, struct dwarf2_cu *cu, | |
8410 | LONGEST *offset) | |
8411 | { | |
8412 | struct attribute *attr; | |
8413 | ||
8414 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); | |
8415 | if (attr != NULL) | |
8416 | { | |
8417 | *offset = 0; | |
8418 | ||
8419 | /* Note that we do not check for a section offset first here. | |
8420 | This is because DW_AT_data_member_location is new in DWARF 4, | |
8421 | so if we see it, we can assume that a constant form is really | |
8422 | a constant and not a section offset. */ | |
8423 | if (attr_form_is_constant (attr)) | |
8424 | *offset = dwarf2_get_attr_constant_value (attr, 0); | |
8425 | else if (attr_form_is_section_offset (attr)) | |
8426 | dwarf2_complex_location_expr_complaint (); | |
8427 | else if (attr_form_is_block (attr)) | |
8428 | *offset = decode_locdesc (DW_BLOCK (attr), cu); | |
8429 | else | |
8430 | dwarf2_complex_location_expr_complaint (); | |
8431 | ||
8432 | return 1; | |
8433 | } | |
8434 | ||
8435 | return 0; | |
8436 | } | |
8437 | ||
c906108c SS |
8438 | /* Add an aggregate field to the field list. */ |
8439 | ||
8440 | static void | |
107d2387 | 8441 | dwarf2_add_field (struct field_info *fip, struct die_info *die, |
e7c27a73 | 8442 | struct dwarf2_cu *cu) |
6e70227d | 8443 | { |
e7c27a73 | 8444 | struct objfile *objfile = cu->objfile; |
5e2b427d | 8445 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
8446 | struct nextfield *new_field; |
8447 | struct attribute *attr; | |
8448 | struct field *fp; | |
8449 | char *fieldname = ""; | |
8450 | ||
8451 | /* Allocate a new field list entry and link it in. */ | |
8452 | new_field = (struct nextfield *) xmalloc (sizeof (struct nextfield)); | |
b8c9b27d | 8453 | make_cleanup (xfree, new_field); |
c906108c | 8454 | memset (new_field, 0, sizeof (struct nextfield)); |
7d0ccb61 DJ |
8455 | |
8456 | if (die->tag == DW_TAG_inheritance) | |
8457 | { | |
8458 | new_field->next = fip->baseclasses; | |
8459 | fip->baseclasses = new_field; | |
8460 | } | |
8461 | else | |
8462 | { | |
8463 | new_field->next = fip->fields; | |
8464 | fip->fields = new_field; | |
8465 | } | |
c906108c SS |
8466 | fip->nfields++; |
8467 | ||
e142c38c | 8468 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c SS |
8469 | if (attr) |
8470 | new_field->accessibility = DW_UNSND (attr); | |
60d5a603 JK |
8471 | else |
8472 | new_field->accessibility = dwarf2_default_access_attribute (die, cu); | |
c906108c SS |
8473 | if (new_field->accessibility != DW_ACCESS_public) |
8474 | fip->non_public_fields = 1; | |
60d5a603 | 8475 | |
e142c38c | 8476 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); |
c906108c SS |
8477 | if (attr) |
8478 | new_field->virtuality = DW_UNSND (attr); | |
60d5a603 JK |
8479 | else |
8480 | new_field->virtuality = DW_VIRTUALITY_none; | |
c906108c SS |
8481 | |
8482 | fp = &new_field->field; | |
a9a9bd0f | 8483 | |
e142c38c | 8484 | if (die->tag == DW_TAG_member && ! die_is_declaration (die, cu)) |
c906108c | 8485 | { |
74ac6d43 TT |
8486 | LONGEST offset; |
8487 | ||
a9a9bd0f | 8488 | /* Data member other than a C++ static data member. */ |
6e70227d | 8489 | |
c906108c | 8490 | /* Get type of field. */ |
e7c27a73 | 8491 | fp->type = die_type (die, cu); |
c906108c | 8492 | |
d6a843b5 | 8493 | SET_FIELD_BITPOS (*fp, 0); |
01ad7f36 | 8494 | |
c906108c | 8495 | /* Get bit size of field (zero if none). */ |
e142c38c | 8496 | attr = dwarf2_attr (die, DW_AT_bit_size, cu); |
c906108c SS |
8497 | if (attr) |
8498 | { | |
8499 | FIELD_BITSIZE (*fp) = DW_UNSND (attr); | |
8500 | } | |
8501 | else | |
8502 | { | |
8503 | FIELD_BITSIZE (*fp) = 0; | |
8504 | } | |
8505 | ||
8506 | /* Get bit offset of field. */ | |
74ac6d43 TT |
8507 | if (handle_data_member_location (die, cu, &offset)) |
8508 | SET_FIELD_BITPOS (*fp, offset * bits_per_byte); | |
e142c38c | 8509 | attr = dwarf2_attr (die, DW_AT_bit_offset, cu); |
c906108c SS |
8510 | if (attr) |
8511 | { | |
5e2b427d | 8512 | if (gdbarch_bits_big_endian (gdbarch)) |
c906108c SS |
8513 | { |
8514 | /* For big endian bits, the DW_AT_bit_offset gives the | |
c5aa993b JM |
8515 | additional bit offset from the MSB of the containing |
8516 | anonymous object to the MSB of the field. We don't | |
8517 | have to do anything special since we don't need to | |
8518 | know the size of the anonymous object. */ | |
f41f5e61 | 8519 | SET_FIELD_BITPOS (*fp, FIELD_BITPOS (*fp) + DW_UNSND (attr)); |
c906108c SS |
8520 | } |
8521 | else | |
8522 | { | |
8523 | /* For little endian bits, compute the bit offset to the | |
c5aa993b JM |
8524 | MSB of the anonymous object, subtract off the number of |
8525 | bits from the MSB of the field to the MSB of the | |
8526 | object, and then subtract off the number of bits of | |
8527 | the field itself. The result is the bit offset of | |
8528 | the LSB of the field. */ | |
c906108c SS |
8529 | int anonymous_size; |
8530 | int bit_offset = DW_UNSND (attr); | |
8531 | ||
e142c38c | 8532 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
8533 | if (attr) |
8534 | { | |
8535 | /* The size of the anonymous object containing | |
8536 | the bit field is explicit, so use the | |
8537 | indicated size (in bytes). */ | |
8538 | anonymous_size = DW_UNSND (attr); | |
8539 | } | |
8540 | else | |
8541 | { | |
8542 | /* The size of the anonymous object containing | |
8543 | the bit field must be inferred from the type | |
8544 | attribute of the data member containing the | |
8545 | bit field. */ | |
8546 | anonymous_size = TYPE_LENGTH (fp->type); | |
8547 | } | |
f41f5e61 PA |
8548 | SET_FIELD_BITPOS (*fp, |
8549 | (FIELD_BITPOS (*fp) | |
8550 | + anonymous_size * bits_per_byte | |
8551 | - bit_offset - FIELD_BITSIZE (*fp))); | |
c906108c SS |
8552 | } |
8553 | } | |
8554 | ||
8555 | /* Get name of field. */ | |
39cbfefa DJ |
8556 | fieldname = dwarf2_name (die, cu); |
8557 | if (fieldname == NULL) | |
8558 | fieldname = ""; | |
d8151005 DJ |
8559 | |
8560 | /* The name is already allocated along with this objfile, so we don't | |
8561 | need to duplicate it for the type. */ | |
8562 | fp->name = fieldname; | |
c906108c SS |
8563 | |
8564 | /* Change accessibility for artificial fields (e.g. virtual table | |
c5aa993b | 8565 | pointer or virtual base class pointer) to private. */ |
e142c38c | 8566 | if (dwarf2_attr (die, DW_AT_artificial, cu)) |
c906108c | 8567 | { |
d48cc9dd | 8568 | FIELD_ARTIFICIAL (*fp) = 1; |
c906108c SS |
8569 | new_field->accessibility = DW_ACCESS_private; |
8570 | fip->non_public_fields = 1; | |
8571 | } | |
8572 | } | |
a9a9bd0f | 8573 | else if (die->tag == DW_TAG_member || die->tag == DW_TAG_variable) |
c906108c | 8574 | { |
a9a9bd0f DC |
8575 | /* C++ static member. */ |
8576 | ||
8577 | /* NOTE: carlton/2002-11-05: It should be a DW_TAG_member that | |
8578 | is a declaration, but all versions of G++ as of this writing | |
8579 | (so through at least 3.2.1) incorrectly generate | |
8580 | DW_TAG_variable tags. */ | |
6e70227d | 8581 | |
ff355380 | 8582 | const char *physname; |
c906108c | 8583 | |
a9a9bd0f | 8584 | /* Get name of field. */ |
39cbfefa DJ |
8585 | fieldname = dwarf2_name (die, cu); |
8586 | if (fieldname == NULL) | |
c906108c SS |
8587 | return; |
8588 | ||
254e6b9e | 8589 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
3863f96c DE |
8590 | if (attr |
8591 | /* Only create a symbol if this is an external value. | |
8592 | new_symbol checks this and puts the value in the global symbol | |
8593 | table, which we want. If it is not external, new_symbol | |
8594 | will try to put the value in cu->list_in_scope which is wrong. */ | |
8595 | && dwarf2_flag_true_p (die, DW_AT_external, cu)) | |
254e6b9e DE |
8596 | { |
8597 | /* A static const member, not much different than an enum as far as | |
8598 | we're concerned, except that we can support more types. */ | |
8599 | new_symbol (die, NULL, cu); | |
8600 | } | |
8601 | ||
2df3850c | 8602 | /* Get physical name. */ |
ff355380 | 8603 | physname = dwarf2_physname (fieldname, die, cu); |
c906108c | 8604 | |
d8151005 DJ |
8605 | /* The name is already allocated along with this objfile, so we don't |
8606 | need to duplicate it for the type. */ | |
8607 | SET_FIELD_PHYSNAME (*fp, physname ? physname : ""); | |
e7c27a73 | 8608 | FIELD_TYPE (*fp) = die_type (die, cu); |
d8151005 | 8609 | FIELD_NAME (*fp) = fieldname; |
c906108c SS |
8610 | } |
8611 | else if (die->tag == DW_TAG_inheritance) | |
8612 | { | |
74ac6d43 | 8613 | LONGEST offset; |
d4b96c9a | 8614 | |
74ac6d43 TT |
8615 | /* C++ base class field. */ |
8616 | if (handle_data_member_location (die, cu, &offset)) | |
8617 | SET_FIELD_BITPOS (*fp, offset * bits_per_byte); | |
c906108c | 8618 | FIELD_BITSIZE (*fp) = 0; |
e7c27a73 | 8619 | FIELD_TYPE (*fp) = die_type (die, cu); |
c906108c SS |
8620 | FIELD_NAME (*fp) = type_name_no_tag (fp->type); |
8621 | fip->nbaseclasses++; | |
8622 | } | |
8623 | } | |
8624 | ||
98751a41 JK |
8625 | /* Add a typedef defined in the scope of the FIP's class. */ |
8626 | ||
8627 | static void | |
8628 | dwarf2_add_typedef (struct field_info *fip, struct die_info *die, | |
8629 | struct dwarf2_cu *cu) | |
6e70227d | 8630 | { |
98751a41 | 8631 | struct objfile *objfile = cu->objfile; |
98751a41 JK |
8632 | struct typedef_field_list *new_field; |
8633 | struct attribute *attr; | |
8634 | struct typedef_field *fp; | |
8635 | char *fieldname = ""; | |
8636 | ||
8637 | /* Allocate a new field list entry and link it in. */ | |
8638 | new_field = xzalloc (sizeof (*new_field)); | |
8639 | make_cleanup (xfree, new_field); | |
8640 | ||
8641 | gdb_assert (die->tag == DW_TAG_typedef); | |
8642 | ||
8643 | fp = &new_field->field; | |
8644 | ||
8645 | /* Get name of field. */ | |
8646 | fp->name = dwarf2_name (die, cu); | |
8647 | if (fp->name == NULL) | |
8648 | return; | |
8649 | ||
8650 | fp->type = read_type_die (die, cu); | |
8651 | ||
8652 | new_field->next = fip->typedef_field_list; | |
8653 | fip->typedef_field_list = new_field; | |
8654 | fip->typedef_field_list_count++; | |
8655 | } | |
8656 | ||
c906108c SS |
8657 | /* Create the vector of fields, and attach it to the type. */ |
8658 | ||
8659 | static void | |
fba45db2 | 8660 | dwarf2_attach_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 8661 | struct dwarf2_cu *cu) |
c906108c SS |
8662 | { |
8663 | int nfields = fip->nfields; | |
8664 | ||
8665 | /* Record the field count, allocate space for the array of fields, | |
8666 | and create blank accessibility bitfields if necessary. */ | |
8667 | TYPE_NFIELDS (type) = nfields; | |
8668 | TYPE_FIELDS (type) = (struct field *) | |
8669 | TYPE_ALLOC (type, sizeof (struct field) * nfields); | |
8670 | memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nfields); | |
8671 | ||
b4ba55a1 | 8672 | if (fip->non_public_fields && cu->language != language_ada) |
c906108c SS |
8673 | { |
8674 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
8675 | ||
8676 | TYPE_FIELD_PRIVATE_BITS (type) = | |
8677 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
8678 | B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); | |
8679 | ||
8680 | TYPE_FIELD_PROTECTED_BITS (type) = | |
8681 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
8682 | B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); | |
8683 | ||
774b6a14 TT |
8684 | TYPE_FIELD_IGNORE_BITS (type) = |
8685 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
8686 | B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields); | |
c906108c SS |
8687 | } |
8688 | ||
8689 | /* If the type has baseclasses, allocate and clear a bit vector for | |
8690 | TYPE_FIELD_VIRTUAL_BITS. */ | |
b4ba55a1 | 8691 | if (fip->nbaseclasses && cu->language != language_ada) |
c906108c SS |
8692 | { |
8693 | int num_bytes = B_BYTES (fip->nbaseclasses); | |
fe1b8b76 | 8694 | unsigned char *pointer; |
c906108c SS |
8695 | |
8696 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
fe1b8b76 JB |
8697 | pointer = TYPE_ALLOC (type, num_bytes); |
8698 | TYPE_FIELD_VIRTUAL_BITS (type) = pointer; | |
c906108c SS |
8699 | B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), fip->nbaseclasses); |
8700 | TYPE_N_BASECLASSES (type) = fip->nbaseclasses; | |
8701 | } | |
8702 | ||
3e43a32a MS |
8703 | /* Copy the saved-up fields into the field vector. Start from the head of |
8704 | the list, adding to the tail of the field array, so that they end up in | |
8705 | the same order in the array in which they were added to the list. */ | |
c906108c SS |
8706 | while (nfields-- > 0) |
8707 | { | |
7d0ccb61 DJ |
8708 | struct nextfield *fieldp; |
8709 | ||
8710 | if (fip->fields) | |
8711 | { | |
8712 | fieldp = fip->fields; | |
8713 | fip->fields = fieldp->next; | |
8714 | } | |
8715 | else | |
8716 | { | |
8717 | fieldp = fip->baseclasses; | |
8718 | fip->baseclasses = fieldp->next; | |
8719 | } | |
8720 | ||
8721 | TYPE_FIELD (type, nfields) = fieldp->field; | |
8722 | switch (fieldp->accessibility) | |
c906108c | 8723 | { |
c5aa993b | 8724 | case DW_ACCESS_private: |
b4ba55a1 JB |
8725 | if (cu->language != language_ada) |
8726 | SET_TYPE_FIELD_PRIVATE (type, nfields); | |
c5aa993b | 8727 | break; |
c906108c | 8728 | |
c5aa993b | 8729 | case DW_ACCESS_protected: |
b4ba55a1 JB |
8730 | if (cu->language != language_ada) |
8731 | SET_TYPE_FIELD_PROTECTED (type, nfields); | |
c5aa993b | 8732 | break; |
c906108c | 8733 | |
c5aa993b JM |
8734 | case DW_ACCESS_public: |
8735 | break; | |
c906108c | 8736 | |
c5aa993b JM |
8737 | default: |
8738 | /* Unknown accessibility. Complain and treat it as public. */ | |
8739 | { | |
e2e0b3e5 | 8740 | complaint (&symfile_complaints, _("unsupported accessibility %d"), |
7d0ccb61 | 8741 | fieldp->accessibility); |
c5aa993b JM |
8742 | } |
8743 | break; | |
c906108c SS |
8744 | } |
8745 | if (nfields < fip->nbaseclasses) | |
8746 | { | |
7d0ccb61 | 8747 | switch (fieldp->virtuality) |
c906108c | 8748 | { |
c5aa993b JM |
8749 | case DW_VIRTUALITY_virtual: |
8750 | case DW_VIRTUALITY_pure_virtual: | |
b4ba55a1 | 8751 | if (cu->language == language_ada) |
a73c6dcd | 8752 | error (_("unexpected virtuality in component of Ada type")); |
c5aa993b JM |
8753 | SET_TYPE_FIELD_VIRTUAL (type, nfields); |
8754 | break; | |
c906108c SS |
8755 | } |
8756 | } | |
c906108c SS |
8757 | } |
8758 | } | |
8759 | ||
c906108c SS |
8760 | /* Add a member function to the proper fieldlist. */ |
8761 | ||
8762 | static void | |
107d2387 | 8763 | dwarf2_add_member_fn (struct field_info *fip, struct die_info *die, |
e7c27a73 | 8764 | struct type *type, struct dwarf2_cu *cu) |
c906108c | 8765 | { |
e7c27a73 | 8766 | struct objfile *objfile = cu->objfile; |
c906108c SS |
8767 | struct attribute *attr; |
8768 | struct fnfieldlist *flp; | |
8769 | int i; | |
8770 | struct fn_field *fnp; | |
8771 | char *fieldname; | |
c906108c | 8772 | struct nextfnfield *new_fnfield; |
f792889a | 8773 | struct type *this_type; |
60d5a603 | 8774 | enum dwarf_access_attribute accessibility; |
c906108c | 8775 | |
b4ba55a1 | 8776 | if (cu->language == language_ada) |
a73c6dcd | 8777 | error (_("unexpected member function in Ada type")); |
b4ba55a1 | 8778 | |
2df3850c | 8779 | /* Get name of member function. */ |
39cbfefa DJ |
8780 | fieldname = dwarf2_name (die, cu); |
8781 | if (fieldname == NULL) | |
2df3850c | 8782 | return; |
c906108c | 8783 | |
c906108c SS |
8784 | /* Look up member function name in fieldlist. */ |
8785 | for (i = 0; i < fip->nfnfields; i++) | |
8786 | { | |
27bfe10e | 8787 | if (strcmp (fip->fnfieldlists[i].name, fieldname) == 0) |
c906108c SS |
8788 | break; |
8789 | } | |
8790 | ||
8791 | /* Create new list element if necessary. */ | |
8792 | if (i < fip->nfnfields) | |
8793 | flp = &fip->fnfieldlists[i]; | |
8794 | else | |
8795 | { | |
8796 | if ((fip->nfnfields % DW_FIELD_ALLOC_CHUNK) == 0) | |
8797 | { | |
8798 | fip->fnfieldlists = (struct fnfieldlist *) | |
8799 | xrealloc (fip->fnfieldlists, | |
8800 | (fip->nfnfields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 8801 | * sizeof (struct fnfieldlist)); |
c906108c | 8802 | if (fip->nfnfields == 0) |
c13c43fd | 8803 | make_cleanup (free_current_contents, &fip->fnfieldlists); |
c906108c SS |
8804 | } |
8805 | flp = &fip->fnfieldlists[fip->nfnfields]; | |
8806 | flp->name = fieldname; | |
8807 | flp->length = 0; | |
8808 | flp->head = NULL; | |
3da10d80 | 8809 | i = fip->nfnfields++; |
c906108c SS |
8810 | } |
8811 | ||
8812 | /* Create a new member function field and chain it to the field list | |
0963b4bd | 8813 | entry. */ |
c906108c | 8814 | new_fnfield = (struct nextfnfield *) xmalloc (sizeof (struct nextfnfield)); |
b8c9b27d | 8815 | make_cleanup (xfree, new_fnfield); |
c906108c SS |
8816 | memset (new_fnfield, 0, sizeof (struct nextfnfield)); |
8817 | new_fnfield->next = flp->head; | |
8818 | flp->head = new_fnfield; | |
8819 | flp->length++; | |
8820 | ||
8821 | /* Fill in the member function field info. */ | |
8822 | fnp = &new_fnfield->fnfield; | |
3da10d80 KS |
8823 | |
8824 | /* Delay processing of the physname until later. */ | |
8825 | if (cu->language == language_cplus || cu->language == language_java) | |
8826 | { | |
8827 | add_to_method_list (type, i, flp->length - 1, fieldname, | |
8828 | die, cu); | |
8829 | } | |
8830 | else | |
8831 | { | |
1d06ead6 | 8832 | const char *physname = dwarf2_physname (fieldname, die, cu); |
3da10d80 KS |
8833 | fnp->physname = physname ? physname : ""; |
8834 | } | |
8835 | ||
c906108c | 8836 | fnp->type = alloc_type (objfile); |
f792889a DJ |
8837 | this_type = read_type_die (die, cu); |
8838 | if (this_type && TYPE_CODE (this_type) == TYPE_CODE_FUNC) | |
c906108c | 8839 | { |
f792889a | 8840 | int nparams = TYPE_NFIELDS (this_type); |
c906108c | 8841 | |
f792889a | 8842 | /* TYPE is the domain of this method, and THIS_TYPE is the type |
e26fb1d7 DC |
8843 | of the method itself (TYPE_CODE_METHOD). */ |
8844 | smash_to_method_type (fnp->type, type, | |
f792889a DJ |
8845 | TYPE_TARGET_TYPE (this_type), |
8846 | TYPE_FIELDS (this_type), | |
8847 | TYPE_NFIELDS (this_type), | |
8848 | TYPE_VARARGS (this_type)); | |
c906108c SS |
8849 | |
8850 | /* Handle static member functions. | |
c5aa993b | 8851 | Dwarf2 has no clean way to discern C++ static and non-static |
0963b4bd MS |
8852 | member functions. G++ helps GDB by marking the first |
8853 | parameter for non-static member functions (which is the this | |
8854 | pointer) as artificial. We obtain this information from | |
8855 | read_subroutine_type via TYPE_FIELD_ARTIFICIAL. */ | |
f792889a | 8856 | if (nparams == 0 || TYPE_FIELD_ARTIFICIAL (this_type, 0) == 0) |
c906108c SS |
8857 | fnp->voffset = VOFFSET_STATIC; |
8858 | } | |
8859 | else | |
e2e0b3e5 | 8860 | complaint (&symfile_complaints, _("member function type missing for '%s'"), |
3da10d80 | 8861 | dwarf2_full_name (fieldname, die, cu)); |
c906108c SS |
8862 | |
8863 | /* Get fcontext from DW_AT_containing_type if present. */ | |
e142c38c | 8864 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
e7c27a73 | 8865 | fnp->fcontext = die_containing_type (die, cu); |
c906108c | 8866 | |
3e43a32a MS |
8867 | /* dwarf2 doesn't have stubbed physical names, so the setting of is_const and |
8868 | is_volatile is irrelevant, as it is needed by gdb_mangle_name only. */ | |
c906108c SS |
8869 | |
8870 | /* Get accessibility. */ | |
e142c38c | 8871 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c | 8872 | if (attr) |
60d5a603 JK |
8873 | accessibility = DW_UNSND (attr); |
8874 | else | |
8875 | accessibility = dwarf2_default_access_attribute (die, cu); | |
8876 | switch (accessibility) | |
c906108c | 8877 | { |
60d5a603 JK |
8878 | case DW_ACCESS_private: |
8879 | fnp->is_private = 1; | |
8880 | break; | |
8881 | case DW_ACCESS_protected: | |
8882 | fnp->is_protected = 1; | |
8883 | break; | |
c906108c SS |
8884 | } |
8885 | ||
b02dede2 | 8886 | /* Check for artificial methods. */ |
e142c38c | 8887 | attr = dwarf2_attr (die, DW_AT_artificial, cu); |
b02dede2 DJ |
8888 | if (attr && DW_UNSND (attr) != 0) |
8889 | fnp->is_artificial = 1; | |
8890 | ||
0d564a31 | 8891 | /* Get index in virtual function table if it is a virtual member |
aec5aa8b TT |
8892 | function. For older versions of GCC, this is an offset in the |
8893 | appropriate virtual table, as specified by DW_AT_containing_type. | |
8894 | For everyone else, it is an expression to be evaluated relative | |
0d564a31 DJ |
8895 | to the object address. */ |
8896 | ||
e142c38c | 8897 | attr = dwarf2_attr (die, DW_AT_vtable_elem_location, cu); |
aec5aa8b | 8898 | if (attr) |
8e19ed76 | 8899 | { |
aec5aa8b | 8900 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size > 0) |
8e19ed76 | 8901 | { |
aec5aa8b TT |
8902 | if (DW_BLOCK (attr)->data[0] == DW_OP_constu) |
8903 | { | |
8904 | /* Old-style GCC. */ | |
8905 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu) + 2; | |
8906 | } | |
8907 | else if (DW_BLOCK (attr)->data[0] == DW_OP_deref | |
8908 | || (DW_BLOCK (attr)->size > 1 | |
8909 | && DW_BLOCK (attr)->data[0] == DW_OP_deref_size | |
8910 | && DW_BLOCK (attr)->data[1] == cu->header.addr_size)) | |
8911 | { | |
8912 | struct dwarf_block blk; | |
8913 | int offset; | |
8914 | ||
8915 | offset = (DW_BLOCK (attr)->data[0] == DW_OP_deref | |
8916 | ? 1 : 2); | |
8917 | blk.size = DW_BLOCK (attr)->size - offset; | |
8918 | blk.data = DW_BLOCK (attr)->data + offset; | |
8919 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu); | |
8920 | if ((fnp->voffset % cu->header.addr_size) != 0) | |
8921 | dwarf2_complex_location_expr_complaint (); | |
8922 | else | |
8923 | fnp->voffset /= cu->header.addr_size; | |
8924 | fnp->voffset += 2; | |
8925 | } | |
8926 | else | |
8927 | dwarf2_complex_location_expr_complaint (); | |
8928 | ||
8929 | if (!fnp->fcontext) | |
8930 | fnp->fcontext = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (this_type, 0)); | |
8931 | } | |
3690dd37 | 8932 | else if (attr_form_is_section_offset (attr)) |
8e19ed76 | 8933 | { |
4d3c2250 | 8934 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
8935 | } |
8936 | else | |
8937 | { | |
4d3c2250 KB |
8938 | dwarf2_invalid_attrib_class_complaint ("DW_AT_vtable_elem_location", |
8939 | fieldname); | |
8e19ed76 | 8940 | } |
0d564a31 | 8941 | } |
d48cc9dd DJ |
8942 | else |
8943 | { | |
8944 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); | |
8945 | if (attr && DW_UNSND (attr)) | |
8946 | { | |
8947 | /* GCC does this, as of 2008-08-25; PR debug/37237. */ | |
8948 | complaint (&symfile_complaints, | |
3e43a32a MS |
8949 | _("Member function \"%s\" (offset %d) is virtual " |
8950 | "but the vtable offset is not specified"), | |
b64f50a1 | 8951 | fieldname, die->offset.sect_off); |
9655fd1a | 8952 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
d48cc9dd DJ |
8953 | TYPE_CPLUS_DYNAMIC (type) = 1; |
8954 | } | |
8955 | } | |
c906108c SS |
8956 | } |
8957 | ||
8958 | /* Create the vector of member function fields, and attach it to the type. */ | |
8959 | ||
8960 | static void | |
fba45db2 | 8961 | dwarf2_attach_fn_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 8962 | struct dwarf2_cu *cu) |
c906108c SS |
8963 | { |
8964 | struct fnfieldlist *flp; | |
c906108c SS |
8965 | int i; |
8966 | ||
b4ba55a1 | 8967 | if (cu->language == language_ada) |
a73c6dcd | 8968 | error (_("unexpected member functions in Ada type")); |
b4ba55a1 | 8969 | |
c906108c SS |
8970 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
8971 | TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) | |
8972 | TYPE_ALLOC (type, sizeof (struct fn_fieldlist) * fip->nfnfields); | |
8973 | ||
8974 | for (i = 0, flp = fip->fnfieldlists; i < fip->nfnfields; i++, flp++) | |
8975 | { | |
8976 | struct nextfnfield *nfp = flp->head; | |
8977 | struct fn_fieldlist *fn_flp = &TYPE_FN_FIELDLIST (type, i); | |
8978 | int k; | |
8979 | ||
8980 | TYPE_FN_FIELDLIST_NAME (type, i) = flp->name; | |
8981 | TYPE_FN_FIELDLIST_LENGTH (type, i) = flp->length; | |
8982 | fn_flp->fn_fields = (struct fn_field *) | |
8983 | TYPE_ALLOC (type, sizeof (struct fn_field) * flp->length); | |
8984 | for (k = flp->length; (k--, nfp); nfp = nfp->next) | |
c5aa993b | 8985 | fn_flp->fn_fields[k] = nfp->fnfield; |
c906108c SS |
8986 | } |
8987 | ||
8988 | TYPE_NFN_FIELDS (type) = fip->nfnfields; | |
c906108c SS |
8989 | } |
8990 | ||
1168df01 JB |
8991 | /* Returns non-zero if NAME is the name of a vtable member in CU's |
8992 | language, zero otherwise. */ | |
8993 | static int | |
8994 | is_vtable_name (const char *name, struct dwarf2_cu *cu) | |
8995 | { | |
8996 | static const char vptr[] = "_vptr"; | |
987504bb | 8997 | static const char vtable[] = "vtable"; |
1168df01 | 8998 | |
987504bb JJ |
8999 | /* Look for the C++ and Java forms of the vtable. */ |
9000 | if ((cu->language == language_java | |
9001 | && strncmp (name, vtable, sizeof (vtable) - 1) == 0) | |
9002 | || (strncmp (name, vptr, sizeof (vptr) - 1) == 0 | |
9003 | && is_cplus_marker (name[sizeof (vptr) - 1]))) | |
1168df01 JB |
9004 | return 1; |
9005 | ||
9006 | return 0; | |
9007 | } | |
9008 | ||
c0dd20ea | 9009 | /* GCC outputs unnamed structures that are really pointers to member |
0b92b5bb TT |
9010 | functions, with the ABI-specified layout. If TYPE describes |
9011 | such a structure, smash it into a member function type. | |
61049d3b DJ |
9012 | |
9013 | GCC shouldn't do this; it should just output pointer to member DIEs. | |
9014 | This is GCC PR debug/28767. */ | |
c0dd20ea | 9015 | |
0b92b5bb TT |
9016 | static void |
9017 | quirk_gcc_member_function_pointer (struct type *type, struct objfile *objfile) | |
c0dd20ea | 9018 | { |
0b92b5bb | 9019 | struct type *pfn_type, *domain_type, *new_type; |
c0dd20ea DJ |
9020 | |
9021 | /* Check for a structure with no name and two children. */ | |
0b92b5bb TT |
9022 | if (TYPE_CODE (type) != TYPE_CODE_STRUCT || TYPE_NFIELDS (type) != 2) |
9023 | return; | |
c0dd20ea DJ |
9024 | |
9025 | /* Check for __pfn and __delta members. */ | |
0b92b5bb TT |
9026 | if (TYPE_FIELD_NAME (type, 0) == NULL |
9027 | || strcmp (TYPE_FIELD_NAME (type, 0), "__pfn") != 0 | |
9028 | || TYPE_FIELD_NAME (type, 1) == NULL | |
9029 | || strcmp (TYPE_FIELD_NAME (type, 1), "__delta") != 0) | |
9030 | return; | |
c0dd20ea DJ |
9031 | |
9032 | /* Find the type of the method. */ | |
0b92b5bb | 9033 | pfn_type = TYPE_FIELD_TYPE (type, 0); |
c0dd20ea DJ |
9034 | if (pfn_type == NULL |
9035 | || TYPE_CODE (pfn_type) != TYPE_CODE_PTR | |
9036 | || TYPE_CODE (TYPE_TARGET_TYPE (pfn_type)) != TYPE_CODE_FUNC) | |
0b92b5bb | 9037 | return; |
c0dd20ea DJ |
9038 | |
9039 | /* Look for the "this" argument. */ | |
9040 | pfn_type = TYPE_TARGET_TYPE (pfn_type); | |
9041 | if (TYPE_NFIELDS (pfn_type) == 0 | |
0b92b5bb | 9042 | /* || TYPE_FIELD_TYPE (pfn_type, 0) == NULL */ |
c0dd20ea | 9043 | || TYPE_CODE (TYPE_FIELD_TYPE (pfn_type, 0)) != TYPE_CODE_PTR) |
0b92b5bb | 9044 | return; |
c0dd20ea DJ |
9045 | |
9046 | domain_type = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (pfn_type, 0)); | |
0b92b5bb TT |
9047 | new_type = alloc_type (objfile); |
9048 | smash_to_method_type (new_type, domain_type, TYPE_TARGET_TYPE (pfn_type), | |
c0dd20ea DJ |
9049 | TYPE_FIELDS (pfn_type), TYPE_NFIELDS (pfn_type), |
9050 | TYPE_VARARGS (pfn_type)); | |
0b92b5bb | 9051 | smash_to_methodptr_type (type, new_type); |
c0dd20ea | 9052 | } |
1168df01 | 9053 | |
685b1105 JK |
9054 | /* Return non-zero if the CU's PRODUCER string matches the Intel C/C++ compiler |
9055 | (icc). */ | |
9056 | ||
9057 | static int | |
9058 | producer_is_icc (struct dwarf2_cu *cu) | |
9059 | { | |
9060 | if (!cu->checked_producer) | |
9061 | check_producer (cu); | |
9062 | ||
9063 | return cu->producer_is_icc; | |
9064 | } | |
9065 | ||
c906108c | 9066 | /* Called when we find the DIE that starts a structure or union scope |
c767944b DJ |
9067 | (definition) to create a type for the structure or union. Fill in |
9068 | the type's name and general properties; the members will not be | |
9069 | processed until process_structure_type. | |
c906108c | 9070 | |
c767944b DJ |
9071 | NOTE: we need to call these functions regardless of whether or not the |
9072 | DIE has a DW_AT_name attribute, since it might be an anonymous | |
c906108c SS |
9073 | structure or union. This gets the type entered into our set of |
9074 | user defined types. | |
9075 | ||
9076 | However, if the structure is incomplete (an opaque struct/union) | |
9077 | then suppress creating a symbol table entry for it since gdb only | |
9078 | wants to find the one with the complete definition. Note that if | |
9079 | it is complete, we just call new_symbol, which does it's own | |
9080 | checking about whether the struct/union is anonymous or not (and | |
9081 | suppresses creating a symbol table entry itself). */ | |
9082 | ||
f792889a | 9083 | static struct type * |
134d01f1 | 9084 | read_structure_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 9085 | { |
e7c27a73 | 9086 | struct objfile *objfile = cu->objfile; |
c906108c SS |
9087 | struct type *type; |
9088 | struct attribute *attr; | |
39cbfefa | 9089 | char *name; |
c906108c | 9090 | |
348e048f DE |
9091 | /* If the definition of this type lives in .debug_types, read that type. |
9092 | Don't follow DW_AT_specification though, that will take us back up | |
9093 | the chain and we want to go down. */ | |
9094 | attr = dwarf2_attr_no_follow (die, DW_AT_signature, cu); | |
9095 | if (attr) | |
9096 | { | |
9097 | struct dwarf2_cu *type_cu = cu; | |
9098 | struct die_info *type_die = follow_die_ref_or_sig (die, attr, &type_cu); | |
9a619af0 | 9099 | |
348e048f DE |
9100 | /* We could just recurse on read_structure_type, but we need to call |
9101 | get_die_type to ensure only one type for this DIE is created. | |
9102 | This is important, for example, because for c++ classes we need | |
9103 | TYPE_NAME set which is only done by new_symbol. Blech. */ | |
9104 | type = read_type_die (type_die, type_cu); | |
9dc481d3 DE |
9105 | |
9106 | /* TYPE_CU may not be the same as CU. | |
9107 | Ensure TYPE is recorded in CU's type_hash table. */ | |
348e048f DE |
9108 | return set_die_type (die, type, cu); |
9109 | } | |
9110 | ||
c0dd20ea | 9111 | type = alloc_type (objfile); |
c906108c | 9112 | INIT_CPLUS_SPECIFIC (type); |
93311388 | 9113 | |
39cbfefa DJ |
9114 | name = dwarf2_name (die, cu); |
9115 | if (name != NULL) | |
c906108c | 9116 | { |
987504bb JJ |
9117 | if (cu->language == language_cplus |
9118 | || cu->language == language_java) | |
63d06c5c | 9119 | { |
3da10d80 KS |
9120 | char *full_name = (char *) dwarf2_full_name (name, die, cu); |
9121 | ||
9122 | /* dwarf2_full_name might have already finished building the DIE's | |
9123 | type. If so, there is no need to continue. */ | |
9124 | if (get_die_type (die, cu) != NULL) | |
9125 | return get_die_type (die, cu); | |
9126 | ||
9127 | TYPE_TAG_NAME (type) = full_name; | |
94af9270 KS |
9128 | if (die->tag == DW_TAG_structure_type |
9129 | || die->tag == DW_TAG_class_type) | |
9130 | TYPE_NAME (type) = TYPE_TAG_NAME (type); | |
63d06c5c DC |
9131 | } |
9132 | else | |
9133 | { | |
d8151005 DJ |
9134 | /* The name is already allocated along with this objfile, so |
9135 | we don't need to duplicate it for the type. */ | |
94af9270 KS |
9136 | TYPE_TAG_NAME (type) = (char *) name; |
9137 | if (die->tag == DW_TAG_class_type) | |
9138 | TYPE_NAME (type) = TYPE_TAG_NAME (type); | |
63d06c5c | 9139 | } |
c906108c SS |
9140 | } |
9141 | ||
9142 | if (die->tag == DW_TAG_structure_type) | |
9143 | { | |
9144 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
9145 | } | |
9146 | else if (die->tag == DW_TAG_union_type) | |
9147 | { | |
9148 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
9149 | } | |
9150 | else | |
9151 | { | |
c906108c SS |
9152 | TYPE_CODE (type) = TYPE_CODE_CLASS; |
9153 | } | |
9154 | ||
0cc2414c TT |
9155 | if (cu->language == language_cplus && die->tag == DW_TAG_class_type) |
9156 | TYPE_DECLARED_CLASS (type) = 1; | |
9157 | ||
e142c38c | 9158 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
9159 | if (attr) |
9160 | { | |
9161 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
9162 | } | |
9163 | else | |
9164 | { | |
9165 | TYPE_LENGTH (type) = 0; | |
9166 | } | |
9167 | ||
685b1105 JK |
9168 | if (producer_is_icc (cu)) |
9169 | { | |
9170 | /* ICC does not output the required DW_AT_declaration | |
9171 | on incomplete types, but gives them a size of zero. */ | |
9172 | } | |
9173 | else | |
9174 | TYPE_STUB_SUPPORTED (type) = 1; | |
9175 | ||
dc718098 | 9176 | if (die_is_declaration (die, cu)) |
876cecd0 | 9177 | TYPE_STUB (type) = 1; |
a6c727b2 DJ |
9178 | else if (attr == NULL && die->child == NULL |
9179 | && producer_is_realview (cu->producer)) | |
9180 | /* RealView does not output the required DW_AT_declaration | |
9181 | on incomplete types. */ | |
9182 | TYPE_STUB (type) = 1; | |
dc718098 | 9183 | |
c906108c SS |
9184 | /* We need to add the type field to the die immediately so we don't |
9185 | infinitely recurse when dealing with pointers to the structure | |
0963b4bd | 9186 | type within the structure itself. */ |
1c379e20 | 9187 | set_die_type (die, type, cu); |
c906108c | 9188 | |
7e314c57 JK |
9189 | /* set_die_type should be already done. */ |
9190 | set_descriptive_type (type, die, cu); | |
9191 | ||
c767944b DJ |
9192 | return type; |
9193 | } | |
9194 | ||
9195 | /* Finish creating a structure or union type, including filling in | |
9196 | its members and creating a symbol for it. */ | |
9197 | ||
9198 | static void | |
9199 | process_structure_scope (struct die_info *die, struct dwarf2_cu *cu) | |
9200 | { | |
9201 | struct objfile *objfile = cu->objfile; | |
9202 | struct die_info *child_die = die->child; | |
9203 | struct type *type; | |
9204 | ||
9205 | type = get_die_type (die, cu); | |
9206 | if (type == NULL) | |
9207 | type = read_structure_type (die, cu); | |
9208 | ||
e142c38c | 9209 | if (die->child != NULL && ! die_is_declaration (die, cu)) |
c906108c SS |
9210 | { |
9211 | struct field_info fi; | |
9212 | struct die_info *child_die; | |
34eaf542 | 9213 | VEC (symbolp) *template_args = NULL; |
c767944b | 9214 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
c906108c SS |
9215 | |
9216 | memset (&fi, 0, sizeof (struct field_info)); | |
9217 | ||
639d11d3 | 9218 | child_die = die->child; |
c906108c SS |
9219 | |
9220 | while (child_die && child_die->tag) | |
9221 | { | |
a9a9bd0f DC |
9222 | if (child_die->tag == DW_TAG_member |
9223 | || child_die->tag == DW_TAG_variable) | |
c906108c | 9224 | { |
a9a9bd0f DC |
9225 | /* NOTE: carlton/2002-11-05: A C++ static data member |
9226 | should be a DW_TAG_member that is a declaration, but | |
9227 | all versions of G++ as of this writing (so through at | |
9228 | least 3.2.1) incorrectly generate DW_TAG_variable | |
9229 | tags for them instead. */ | |
e7c27a73 | 9230 | dwarf2_add_field (&fi, child_die, cu); |
c906108c | 9231 | } |
8713b1b1 | 9232 | else if (child_die->tag == DW_TAG_subprogram) |
c906108c | 9233 | { |
0963b4bd | 9234 | /* C++ member function. */ |
e7c27a73 | 9235 | dwarf2_add_member_fn (&fi, child_die, type, cu); |
c906108c SS |
9236 | } |
9237 | else if (child_die->tag == DW_TAG_inheritance) | |
9238 | { | |
9239 | /* C++ base class field. */ | |
e7c27a73 | 9240 | dwarf2_add_field (&fi, child_die, cu); |
c906108c | 9241 | } |
98751a41 JK |
9242 | else if (child_die->tag == DW_TAG_typedef) |
9243 | dwarf2_add_typedef (&fi, child_die, cu); | |
34eaf542 TT |
9244 | else if (child_die->tag == DW_TAG_template_type_param |
9245 | || child_die->tag == DW_TAG_template_value_param) | |
9246 | { | |
9247 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
9248 | ||
f1078f66 DJ |
9249 | if (arg != NULL) |
9250 | VEC_safe_push (symbolp, template_args, arg); | |
34eaf542 TT |
9251 | } |
9252 | ||
c906108c SS |
9253 | child_die = sibling_die (child_die); |
9254 | } | |
9255 | ||
34eaf542 TT |
9256 | /* Attach template arguments to type. */ |
9257 | if (! VEC_empty (symbolp, template_args)) | |
9258 | { | |
9259 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
9260 | TYPE_N_TEMPLATE_ARGUMENTS (type) | |
9261 | = VEC_length (symbolp, template_args); | |
9262 | TYPE_TEMPLATE_ARGUMENTS (type) | |
9263 | = obstack_alloc (&objfile->objfile_obstack, | |
9264 | (TYPE_N_TEMPLATE_ARGUMENTS (type) | |
9265 | * sizeof (struct symbol *))); | |
9266 | memcpy (TYPE_TEMPLATE_ARGUMENTS (type), | |
9267 | VEC_address (symbolp, template_args), | |
9268 | (TYPE_N_TEMPLATE_ARGUMENTS (type) | |
9269 | * sizeof (struct symbol *))); | |
9270 | VEC_free (symbolp, template_args); | |
9271 | } | |
9272 | ||
c906108c SS |
9273 | /* Attach fields and member functions to the type. */ |
9274 | if (fi.nfields) | |
e7c27a73 | 9275 | dwarf2_attach_fields_to_type (&fi, type, cu); |
c906108c SS |
9276 | if (fi.nfnfields) |
9277 | { | |
e7c27a73 | 9278 | dwarf2_attach_fn_fields_to_type (&fi, type, cu); |
c906108c | 9279 | |
c5aa993b | 9280 | /* Get the type which refers to the base class (possibly this |
c906108c | 9281 | class itself) which contains the vtable pointer for the current |
0d564a31 DJ |
9282 | class from the DW_AT_containing_type attribute. This use of |
9283 | DW_AT_containing_type is a GNU extension. */ | |
c906108c | 9284 | |
e142c38c | 9285 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
c906108c | 9286 | { |
e7c27a73 | 9287 | struct type *t = die_containing_type (die, cu); |
c906108c SS |
9288 | |
9289 | TYPE_VPTR_BASETYPE (type) = t; | |
9290 | if (type == t) | |
9291 | { | |
c906108c SS |
9292 | int i; |
9293 | ||
9294 | /* Our own class provides vtbl ptr. */ | |
9295 | for (i = TYPE_NFIELDS (t) - 1; | |
9296 | i >= TYPE_N_BASECLASSES (t); | |
9297 | --i) | |
9298 | { | |
0d5cff50 | 9299 | const char *fieldname = TYPE_FIELD_NAME (t, i); |
c906108c | 9300 | |
1168df01 | 9301 | if (is_vtable_name (fieldname, cu)) |
c906108c SS |
9302 | { |
9303 | TYPE_VPTR_FIELDNO (type) = i; | |
9304 | break; | |
9305 | } | |
9306 | } | |
9307 | ||
9308 | /* Complain if virtual function table field not found. */ | |
9309 | if (i < TYPE_N_BASECLASSES (t)) | |
4d3c2250 | 9310 | complaint (&symfile_complaints, |
3e43a32a MS |
9311 | _("virtual function table pointer " |
9312 | "not found when defining class '%s'"), | |
4d3c2250 KB |
9313 | TYPE_TAG_NAME (type) ? TYPE_TAG_NAME (type) : |
9314 | ""); | |
c906108c SS |
9315 | } |
9316 | else | |
9317 | { | |
9318 | TYPE_VPTR_FIELDNO (type) = TYPE_VPTR_FIELDNO (t); | |
9319 | } | |
9320 | } | |
f6235d4c EZ |
9321 | else if (cu->producer |
9322 | && strncmp (cu->producer, | |
9323 | "IBM(R) XL C/C++ Advanced Edition", 32) == 0) | |
9324 | { | |
9325 | /* The IBM XLC compiler does not provide direct indication | |
9326 | of the containing type, but the vtable pointer is | |
9327 | always named __vfp. */ | |
9328 | ||
9329 | int i; | |
9330 | ||
9331 | for (i = TYPE_NFIELDS (type) - 1; | |
9332 | i >= TYPE_N_BASECLASSES (type); | |
9333 | --i) | |
9334 | { | |
9335 | if (strcmp (TYPE_FIELD_NAME (type, i), "__vfp") == 0) | |
9336 | { | |
9337 | TYPE_VPTR_FIELDNO (type) = i; | |
9338 | TYPE_VPTR_BASETYPE (type) = type; | |
9339 | break; | |
9340 | } | |
9341 | } | |
9342 | } | |
c906108c | 9343 | } |
98751a41 JK |
9344 | |
9345 | /* Copy fi.typedef_field_list linked list elements content into the | |
9346 | allocated array TYPE_TYPEDEF_FIELD_ARRAY (type). */ | |
9347 | if (fi.typedef_field_list) | |
9348 | { | |
9349 | int i = fi.typedef_field_list_count; | |
9350 | ||
a0d7a4ff | 9351 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
98751a41 JK |
9352 | TYPE_TYPEDEF_FIELD_ARRAY (type) |
9353 | = TYPE_ALLOC (type, sizeof (TYPE_TYPEDEF_FIELD (type, 0)) * i); | |
9354 | TYPE_TYPEDEF_FIELD_COUNT (type) = i; | |
9355 | ||
9356 | /* Reverse the list order to keep the debug info elements order. */ | |
9357 | while (--i >= 0) | |
9358 | { | |
9359 | struct typedef_field *dest, *src; | |
6e70227d | 9360 | |
98751a41 JK |
9361 | dest = &TYPE_TYPEDEF_FIELD (type, i); |
9362 | src = &fi.typedef_field_list->field; | |
9363 | fi.typedef_field_list = fi.typedef_field_list->next; | |
9364 | *dest = *src; | |
9365 | } | |
9366 | } | |
c767944b DJ |
9367 | |
9368 | do_cleanups (back_to); | |
eb2a6f42 TT |
9369 | |
9370 | if (HAVE_CPLUS_STRUCT (type)) | |
9371 | TYPE_CPLUS_REALLY_JAVA (type) = cu->language == language_java; | |
c906108c | 9372 | } |
63d06c5c | 9373 | |
bb5ed363 | 9374 | quirk_gcc_member_function_pointer (type, objfile); |
0b92b5bb | 9375 | |
90aeadfc DC |
9376 | /* NOTE: carlton/2004-03-16: GCC 3.4 (or at least one of its |
9377 | snapshots) has been known to create a die giving a declaration | |
9378 | for a class that has, as a child, a die giving a definition for a | |
9379 | nested class. So we have to process our children even if the | |
9380 | current die is a declaration. Normally, of course, a declaration | |
9381 | won't have any children at all. */ | |
134d01f1 | 9382 | |
90aeadfc DC |
9383 | while (child_die != NULL && child_die->tag) |
9384 | { | |
9385 | if (child_die->tag == DW_TAG_member | |
9386 | || child_die->tag == DW_TAG_variable | |
34eaf542 TT |
9387 | || child_die->tag == DW_TAG_inheritance |
9388 | || child_die->tag == DW_TAG_template_value_param | |
9389 | || child_die->tag == DW_TAG_template_type_param) | |
134d01f1 | 9390 | { |
90aeadfc | 9391 | /* Do nothing. */ |
134d01f1 | 9392 | } |
90aeadfc DC |
9393 | else |
9394 | process_die (child_die, cu); | |
134d01f1 | 9395 | |
90aeadfc | 9396 | child_die = sibling_die (child_die); |
134d01f1 DJ |
9397 | } |
9398 | ||
fa4028e9 JB |
9399 | /* Do not consider external references. According to the DWARF standard, |
9400 | these DIEs are identified by the fact that they have no byte_size | |
9401 | attribute, and a declaration attribute. */ | |
9402 | if (dwarf2_attr (die, DW_AT_byte_size, cu) != NULL | |
9403 | || !die_is_declaration (die, cu)) | |
c767944b | 9404 | new_symbol (die, type, cu); |
134d01f1 DJ |
9405 | } |
9406 | ||
9407 | /* Given a DW_AT_enumeration_type die, set its type. We do not | |
9408 | complete the type's fields yet, or create any symbols. */ | |
c906108c | 9409 | |
f792889a | 9410 | static struct type * |
134d01f1 | 9411 | read_enumeration_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 9412 | { |
e7c27a73 | 9413 | struct objfile *objfile = cu->objfile; |
c906108c | 9414 | struct type *type; |
c906108c | 9415 | struct attribute *attr; |
0114d602 | 9416 | const char *name; |
134d01f1 | 9417 | |
348e048f DE |
9418 | /* If the definition of this type lives in .debug_types, read that type. |
9419 | Don't follow DW_AT_specification though, that will take us back up | |
9420 | the chain and we want to go down. */ | |
9421 | attr = dwarf2_attr_no_follow (die, DW_AT_signature, cu); | |
9422 | if (attr) | |
9423 | { | |
9424 | struct dwarf2_cu *type_cu = cu; | |
9425 | struct die_info *type_die = follow_die_ref_or_sig (die, attr, &type_cu); | |
9a619af0 | 9426 | |
348e048f | 9427 | type = read_type_die (type_die, type_cu); |
9dc481d3 DE |
9428 | |
9429 | /* TYPE_CU may not be the same as CU. | |
9430 | Ensure TYPE is recorded in CU's type_hash table. */ | |
348e048f DE |
9431 | return set_die_type (die, type, cu); |
9432 | } | |
9433 | ||
c906108c SS |
9434 | type = alloc_type (objfile); |
9435 | ||
9436 | TYPE_CODE (type) = TYPE_CODE_ENUM; | |
94af9270 | 9437 | name = dwarf2_full_name (NULL, die, cu); |
39cbfefa | 9438 | if (name != NULL) |
0114d602 | 9439 | TYPE_TAG_NAME (type) = (char *) name; |
c906108c | 9440 | |
e142c38c | 9441 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
9442 | if (attr) |
9443 | { | |
9444 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
9445 | } | |
9446 | else | |
9447 | { | |
9448 | TYPE_LENGTH (type) = 0; | |
9449 | } | |
9450 | ||
137033e9 JB |
9451 | /* The enumeration DIE can be incomplete. In Ada, any type can be |
9452 | declared as private in the package spec, and then defined only | |
9453 | inside the package body. Such types are known as Taft Amendment | |
9454 | Types. When another package uses such a type, an incomplete DIE | |
9455 | may be generated by the compiler. */ | |
02eb380e | 9456 | if (die_is_declaration (die, cu)) |
876cecd0 | 9457 | TYPE_STUB (type) = 1; |
02eb380e | 9458 | |
f792889a | 9459 | return set_die_type (die, type, cu); |
134d01f1 DJ |
9460 | } |
9461 | ||
9462 | /* Given a pointer to a die which begins an enumeration, process all | |
9463 | the dies that define the members of the enumeration, and create the | |
9464 | symbol for the enumeration type. | |
9465 | ||
9466 | NOTE: We reverse the order of the element list. */ | |
9467 | ||
9468 | static void | |
9469 | process_enumeration_scope (struct die_info *die, struct dwarf2_cu *cu) | |
9470 | { | |
f792889a | 9471 | struct type *this_type; |
134d01f1 | 9472 | |
f792889a DJ |
9473 | this_type = get_die_type (die, cu); |
9474 | if (this_type == NULL) | |
9475 | this_type = read_enumeration_type (die, cu); | |
9dc481d3 | 9476 | |
639d11d3 | 9477 | if (die->child != NULL) |
c906108c | 9478 | { |
9dc481d3 DE |
9479 | struct die_info *child_die; |
9480 | struct symbol *sym; | |
9481 | struct field *fields = NULL; | |
9482 | int num_fields = 0; | |
9483 | int unsigned_enum = 1; | |
9484 | char *name; | |
cafec441 TT |
9485 | int flag_enum = 1; |
9486 | ULONGEST mask = 0; | |
9dc481d3 | 9487 | |
639d11d3 | 9488 | child_die = die->child; |
c906108c SS |
9489 | while (child_die && child_die->tag) |
9490 | { | |
9491 | if (child_die->tag != DW_TAG_enumerator) | |
9492 | { | |
e7c27a73 | 9493 | process_die (child_die, cu); |
c906108c SS |
9494 | } |
9495 | else | |
9496 | { | |
39cbfefa DJ |
9497 | name = dwarf2_name (child_die, cu); |
9498 | if (name) | |
c906108c | 9499 | { |
f792889a | 9500 | sym = new_symbol (child_die, this_type, cu); |
c906108c | 9501 | if (SYMBOL_VALUE (sym) < 0) |
cafec441 TT |
9502 | { |
9503 | unsigned_enum = 0; | |
9504 | flag_enum = 0; | |
9505 | } | |
9506 | else if ((mask & SYMBOL_VALUE (sym)) != 0) | |
9507 | flag_enum = 0; | |
9508 | else | |
9509 | mask |= SYMBOL_VALUE (sym); | |
c906108c SS |
9510 | |
9511 | if ((num_fields % DW_FIELD_ALLOC_CHUNK) == 0) | |
9512 | { | |
9513 | fields = (struct field *) | |
9514 | xrealloc (fields, | |
9515 | (num_fields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 9516 | * sizeof (struct field)); |
c906108c SS |
9517 | } |
9518 | ||
3567439c | 9519 | FIELD_NAME (fields[num_fields]) = SYMBOL_LINKAGE_NAME (sym); |
c906108c | 9520 | FIELD_TYPE (fields[num_fields]) = NULL; |
14e75d8e | 9521 | SET_FIELD_ENUMVAL (fields[num_fields], SYMBOL_VALUE (sym)); |
c906108c SS |
9522 | FIELD_BITSIZE (fields[num_fields]) = 0; |
9523 | ||
9524 | num_fields++; | |
9525 | } | |
9526 | } | |
9527 | ||
9528 | child_die = sibling_die (child_die); | |
9529 | } | |
9530 | ||
9531 | if (num_fields) | |
9532 | { | |
f792889a DJ |
9533 | TYPE_NFIELDS (this_type) = num_fields; |
9534 | TYPE_FIELDS (this_type) = (struct field *) | |
9535 | TYPE_ALLOC (this_type, sizeof (struct field) * num_fields); | |
9536 | memcpy (TYPE_FIELDS (this_type), fields, | |
c906108c | 9537 | sizeof (struct field) * num_fields); |
b8c9b27d | 9538 | xfree (fields); |
c906108c SS |
9539 | } |
9540 | if (unsigned_enum) | |
876cecd0 | 9541 | TYPE_UNSIGNED (this_type) = 1; |
cafec441 TT |
9542 | if (flag_enum) |
9543 | TYPE_FLAG_ENUM (this_type) = 1; | |
c906108c | 9544 | } |
134d01f1 | 9545 | |
6c83ed52 TT |
9546 | /* If we are reading an enum from a .debug_types unit, and the enum |
9547 | is a declaration, and the enum is not the signatured type in the | |
9548 | unit, then we do not want to add a symbol for it. Adding a | |
9549 | symbol would in some cases obscure the true definition of the | |
9550 | enum, giving users an incomplete type when the definition is | |
9551 | actually available. Note that we do not want to do this for all | |
9552 | enums which are just declarations, because C++0x allows forward | |
9553 | enum declarations. */ | |
3019eac3 | 9554 | if (cu->per_cu->is_debug_types |
6c83ed52 TT |
9555 | && die_is_declaration (die, cu)) |
9556 | { | |
52dc124a | 9557 | struct signatured_type *sig_type; |
6c83ed52 | 9558 | |
52dc124a | 9559 | sig_type |
6c83ed52 | 9560 | = lookup_signatured_type_at_offset (dwarf2_per_objfile->objfile, |
3019eac3 | 9561 | cu->per_cu->info_or_types_section, |
6c83ed52 | 9562 | cu->per_cu->offset); |
3019eac3 DE |
9563 | gdb_assert (sig_type->type_offset_in_section.sect_off != 0); |
9564 | if (sig_type->type_offset_in_section.sect_off != die->offset.sect_off) | |
6c83ed52 TT |
9565 | return; |
9566 | } | |
9567 | ||
f792889a | 9568 | new_symbol (die, this_type, cu); |
c906108c SS |
9569 | } |
9570 | ||
9571 | /* Extract all information from a DW_TAG_array_type DIE and put it in | |
9572 | the DIE's type field. For now, this only handles one dimensional | |
9573 | arrays. */ | |
9574 | ||
f792889a | 9575 | static struct type * |
e7c27a73 | 9576 | read_array_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 9577 | { |
e7c27a73 | 9578 | struct objfile *objfile = cu->objfile; |
c906108c | 9579 | struct die_info *child_die; |
7e314c57 | 9580 | struct type *type; |
c906108c SS |
9581 | struct type *element_type, *range_type, *index_type; |
9582 | struct type **range_types = NULL; | |
9583 | struct attribute *attr; | |
9584 | int ndim = 0; | |
9585 | struct cleanup *back_to; | |
39cbfefa | 9586 | char *name; |
c906108c | 9587 | |
e7c27a73 | 9588 | element_type = die_type (die, cu); |
c906108c | 9589 | |
7e314c57 JK |
9590 | /* The die_type call above may have already set the type for this DIE. */ |
9591 | type = get_die_type (die, cu); | |
9592 | if (type) | |
9593 | return type; | |
9594 | ||
c906108c SS |
9595 | /* Irix 6.2 native cc creates array types without children for |
9596 | arrays with unspecified length. */ | |
639d11d3 | 9597 | if (die->child == NULL) |
c906108c | 9598 | { |
46bf5051 | 9599 | index_type = objfile_type (objfile)->builtin_int; |
c906108c | 9600 | range_type = create_range_type (NULL, index_type, 0, -1); |
f792889a DJ |
9601 | type = create_array_type (NULL, element_type, range_type); |
9602 | return set_die_type (die, type, cu); | |
c906108c SS |
9603 | } |
9604 | ||
9605 | back_to = make_cleanup (null_cleanup, NULL); | |
639d11d3 | 9606 | child_die = die->child; |
c906108c SS |
9607 | while (child_die && child_die->tag) |
9608 | { | |
9609 | if (child_die->tag == DW_TAG_subrange_type) | |
9610 | { | |
f792889a | 9611 | struct type *child_type = read_type_die (child_die, cu); |
9a619af0 | 9612 | |
f792889a | 9613 | if (child_type != NULL) |
a02abb62 | 9614 | { |
0963b4bd MS |
9615 | /* The range type was succesfully read. Save it for the |
9616 | array type creation. */ | |
a02abb62 JB |
9617 | if ((ndim % DW_FIELD_ALLOC_CHUNK) == 0) |
9618 | { | |
9619 | range_types = (struct type **) | |
9620 | xrealloc (range_types, (ndim + DW_FIELD_ALLOC_CHUNK) | |
9621 | * sizeof (struct type *)); | |
9622 | if (ndim == 0) | |
9623 | make_cleanup (free_current_contents, &range_types); | |
9624 | } | |
f792889a | 9625 | range_types[ndim++] = child_type; |
a02abb62 | 9626 | } |
c906108c SS |
9627 | } |
9628 | child_die = sibling_die (child_die); | |
9629 | } | |
9630 | ||
9631 | /* Dwarf2 dimensions are output from left to right, create the | |
9632 | necessary array types in backwards order. */ | |
7ca2d3a3 | 9633 | |
c906108c | 9634 | type = element_type; |
7ca2d3a3 DL |
9635 | |
9636 | if (read_array_order (die, cu) == DW_ORD_col_major) | |
9637 | { | |
9638 | int i = 0; | |
9a619af0 | 9639 | |
7ca2d3a3 DL |
9640 | while (i < ndim) |
9641 | type = create_array_type (NULL, type, range_types[i++]); | |
9642 | } | |
9643 | else | |
9644 | { | |
9645 | while (ndim-- > 0) | |
9646 | type = create_array_type (NULL, type, range_types[ndim]); | |
9647 | } | |
c906108c | 9648 | |
f5f8a009 EZ |
9649 | /* Understand Dwarf2 support for vector types (like they occur on |
9650 | the PowerPC w/ AltiVec). Gcc just adds another attribute to the | |
9651 | array type. This is not part of the Dwarf2/3 standard yet, but a | |
9652 | custom vendor extension. The main difference between a regular | |
9653 | array and the vector variant is that vectors are passed by value | |
9654 | to functions. */ | |
e142c38c | 9655 | attr = dwarf2_attr (die, DW_AT_GNU_vector, cu); |
f5f8a009 | 9656 | if (attr) |
ea37ba09 | 9657 | make_vector_type (type); |
f5f8a009 | 9658 | |
dbc98a8b KW |
9659 | /* The DIE may have DW_AT_byte_size set. For example an OpenCL |
9660 | implementation may choose to implement triple vectors using this | |
9661 | attribute. */ | |
9662 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
9663 | if (attr) | |
9664 | { | |
9665 | if (DW_UNSND (attr) >= TYPE_LENGTH (type)) | |
9666 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
9667 | else | |
3e43a32a MS |
9668 | complaint (&symfile_complaints, |
9669 | _("DW_AT_byte_size for array type smaller " | |
9670 | "than the total size of elements")); | |
dbc98a8b KW |
9671 | } |
9672 | ||
39cbfefa DJ |
9673 | name = dwarf2_name (die, cu); |
9674 | if (name) | |
9675 | TYPE_NAME (type) = name; | |
6e70227d | 9676 | |
0963b4bd | 9677 | /* Install the type in the die. */ |
7e314c57 JK |
9678 | set_die_type (die, type, cu); |
9679 | ||
9680 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
9681 | set_descriptive_type (type, die, cu); |
9682 | ||
c906108c SS |
9683 | do_cleanups (back_to); |
9684 | ||
7e314c57 | 9685 | return type; |
c906108c SS |
9686 | } |
9687 | ||
7ca2d3a3 | 9688 | static enum dwarf_array_dim_ordering |
6e70227d | 9689 | read_array_order (struct die_info *die, struct dwarf2_cu *cu) |
7ca2d3a3 DL |
9690 | { |
9691 | struct attribute *attr; | |
9692 | ||
9693 | attr = dwarf2_attr (die, DW_AT_ordering, cu); | |
9694 | ||
9695 | if (attr) return DW_SND (attr); | |
9696 | ||
0963b4bd MS |
9697 | /* GNU F77 is a special case, as at 08/2004 array type info is the |
9698 | opposite order to the dwarf2 specification, but data is still | |
9699 | laid out as per normal fortran. | |
7ca2d3a3 | 9700 | |
0963b4bd MS |
9701 | FIXME: dsl/2004-8-20: If G77 is ever fixed, this will also need |
9702 | version checking. */ | |
7ca2d3a3 | 9703 | |
905e0470 PM |
9704 | if (cu->language == language_fortran |
9705 | && cu->producer && strstr (cu->producer, "GNU F77")) | |
7ca2d3a3 DL |
9706 | { |
9707 | return DW_ORD_row_major; | |
9708 | } | |
9709 | ||
6e70227d | 9710 | switch (cu->language_defn->la_array_ordering) |
7ca2d3a3 DL |
9711 | { |
9712 | case array_column_major: | |
9713 | return DW_ORD_col_major; | |
9714 | case array_row_major: | |
9715 | default: | |
9716 | return DW_ORD_row_major; | |
9717 | }; | |
9718 | } | |
9719 | ||
72019c9c | 9720 | /* Extract all information from a DW_TAG_set_type DIE and put it in |
0963b4bd | 9721 | the DIE's type field. */ |
72019c9c | 9722 | |
f792889a | 9723 | static struct type * |
72019c9c GM |
9724 | read_set_type (struct die_info *die, struct dwarf2_cu *cu) |
9725 | { | |
7e314c57 JK |
9726 | struct type *domain_type, *set_type; |
9727 | struct attribute *attr; | |
f792889a | 9728 | |
7e314c57 JK |
9729 | domain_type = die_type (die, cu); |
9730 | ||
9731 | /* The die_type call above may have already set the type for this DIE. */ | |
9732 | set_type = get_die_type (die, cu); | |
9733 | if (set_type) | |
9734 | return set_type; | |
9735 | ||
9736 | set_type = create_set_type (NULL, domain_type); | |
9737 | ||
9738 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
d09039dd PM |
9739 | if (attr) |
9740 | TYPE_LENGTH (set_type) = DW_UNSND (attr); | |
7e314c57 | 9741 | |
f792889a | 9742 | return set_die_type (die, set_type, cu); |
72019c9c | 9743 | } |
7ca2d3a3 | 9744 | |
c906108c SS |
9745 | /* First cut: install each common block member as a global variable. */ |
9746 | ||
9747 | static void | |
e7c27a73 | 9748 | read_common_block (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
9749 | { |
9750 | struct die_info *child_die; | |
9751 | struct attribute *attr; | |
9752 | struct symbol *sym; | |
9753 | CORE_ADDR base = (CORE_ADDR) 0; | |
9754 | ||
e142c38c | 9755 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
9756 | if (attr) |
9757 | { | |
0963b4bd | 9758 | /* Support the .debug_loc offsets. */ |
8e19ed76 PS |
9759 | if (attr_form_is_block (attr)) |
9760 | { | |
e7c27a73 | 9761 | base = decode_locdesc (DW_BLOCK (attr), cu); |
8e19ed76 | 9762 | } |
3690dd37 | 9763 | else if (attr_form_is_section_offset (attr)) |
8e19ed76 | 9764 | { |
4d3c2250 | 9765 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
9766 | } |
9767 | else | |
9768 | { | |
4d3c2250 KB |
9769 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
9770 | "common block member"); | |
8e19ed76 | 9771 | } |
c906108c | 9772 | } |
639d11d3 | 9773 | if (die->child != NULL) |
c906108c | 9774 | { |
639d11d3 | 9775 | child_die = die->child; |
c906108c SS |
9776 | while (child_die && child_die->tag) |
9777 | { | |
74ac6d43 TT |
9778 | LONGEST offset; |
9779 | ||
e7c27a73 | 9780 | sym = new_symbol (child_die, NULL, cu); |
e8d28ef4 TT |
9781 | if (sym != NULL |
9782 | && handle_data_member_location (child_die, cu, &offset)) | |
c906108c | 9783 | { |
74ac6d43 | 9784 | SYMBOL_VALUE_ADDRESS (sym) = base + offset; |
c906108c SS |
9785 | add_symbol_to_list (sym, &global_symbols); |
9786 | } | |
9787 | child_die = sibling_die (child_die); | |
9788 | } | |
9789 | } | |
9790 | } | |
9791 | ||
0114d602 | 9792 | /* Create a type for a C++ namespace. */ |
d9fa45fe | 9793 | |
0114d602 DJ |
9794 | static struct type * |
9795 | read_namespace_type (struct die_info *die, struct dwarf2_cu *cu) | |
d9fa45fe | 9796 | { |
e7c27a73 | 9797 | struct objfile *objfile = cu->objfile; |
0114d602 | 9798 | const char *previous_prefix, *name; |
9219021c | 9799 | int is_anonymous; |
0114d602 DJ |
9800 | struct type *type; |
9801 | ||
9802 | /* For extensions, reuse the type of the original namespace. */ | |
9803 | if (dwarf2_attr (die, DW_AT_extension, cu) != NULL) | |
9804 | { | |
9805 | struct die_info *ext_die; | |
9806 | struct dwarf2_cu *ext_cu = cu; | |
9a619af0 | 9807 | |
0114d602 DJ |
9808 | ext_die = dwarf2_extension (die, &ext_cu); |
9809 | type = read_type_die (ext_die, ext_cu); | |
9dc481d3 DE |
9810 | |
9811 | /* EXT_CU may not be the same as CU. | |
9812 | Ensure TYPE is recorded in CU's type_hash table. */ | |
0114d602 DJ |
9813 | return set_die_type (die, type, cu); |
9814 | } | |
9219021c | 9815 | |
e142c38c | 9816 | name = namespace_name (die, &is_anonymous, cu); |
9219021c DC |
9817 | |
9818 | /* Now build the name of the current namespace. */ | |
9819 | ||
0114d602 DJ |
9820 | previous_prefix = determine_prefix (die, cu); |
9821 | if (previous_prefix[0] != '\0') | |
9822 | name = typename_concat (&objfile->objfile_obstack, | |
f55ee35c | 9823 | previous_prefix, name, 0, cu); |
0114d602 DJ |
9824 | |
9825 | /* Create the type. */ | |
9826 | type = init_type (TYPE_CODE_NAMESPACE, 0, 0, NULL, | |
9827 | objfile); | |
9828 | TYPE_NAME (type) = (char *) name; | |
9829 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
9830 | ||
60531b24 | 9831 | return set_die_type (die, type, cu); |
0114d602 DJ |
9832 | } |
9833 | ||
9834 | /* Read a C++ namespace. */ | |
9835 | ||
9836 | static void | |
9837 | read_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
9838 | { | |
9839 | struct objfile *objfile = cu->objfile; | |
0114d602 | 9840 | int is_anonymous; |
9219021c | 9841 | |
5c4e30ca DC |
9842 | /* Add a symbol associated to this if we haven't seen the namespace |
9843 | before. Also, add a using directive if it's an anonymous | |
9844 | namespace. */ | |
9219021c | 9845 | |
f2f0e013 | 9846 | if (dwarf2_attr (die, DW_AT_extension, cu) == NULL) |
5c4e30ca DC |
9847 | { |
9848 | struct type *type; | |
9849 | ||
0114d602 | 9850 | type = read_type_die (die, cu); |
e7c27a73 | 9851 | new_symbol (die, type, cu); |
5c4e30ca | 9852 | |
e8e80198 | 9853 | namespace_name (die, &is_anonymous, cu); |
5c4e30ca | 9854 | if (is_anonymous) |
0114d602 DJ |
9855 | { |
9856 | const char *previous_prefix = determine_prefix (die, cu); | |
9a619af0 | 9857 | |
c0cc3a76 | 9858 | cp_add_using_directive (previous_prefix, TYPE_NAME (type), NULL, |
32019081 | 9859 | NULL, NULL, &objfile->objfile_obstack); |
0114d602 | 9860 | } |
5c4e30ca | 9861 | } |
9219021c | 9862 | |
639d11d3 | 9863 | if (die->child != NULL) |
d9fa45fe | 9864 | { |
639d11d3 | 9865 | struct die_info *child_die = die->child; |
6e70227d | 9866 | |
d9fa45fe DC |
9867 | while (child_die && child_die->tag) |
9868 | { | |
e7c27a73 | 9869 | process_die (child_die, cu); |
d9fa45fe DC |
9870 | child_die = sibling_die (child_die); |
9871 | } | |
9872 | } | |
38d518c9 EZ |
9873 | } |
9874 | ||
f55ee35c JK |
9875 | /* Read a Fortran module as type. This DIE can be only a declaration used for |
9876 | imported module. Still we need that type as local Fortran "use ... only" | |
9877 | declaration imports depend on the created type in determine_prefix. */ | |
9878 | ||
9879 | static struct type * | |
9880 | read_module_type (struct die_info *die, struct dwarf2_cu *cu) | |
9881 | { | |
9882 | struct objfile *objfile = cu->objfile; | |
9883 | char *module_name; | |
9884 | struct type *type; | |
9885 | ||
9886 | module_name = dwarf2_name (die, cu); | |
9887 | if (!module_name) | |
3e43a32a MS |
9888 | complaint (&symfile_complaints, |
9889 | _("DW_TAG_module has no name, offset 0x%x"), | |
b64f50a1 | 9890 | die->offset.sect_off); |
f55ee35c JK |
9891 | type = init_type (TYPE_CODE_MODULE, 0, 0, module_name, objfile); |
9892 | ||
9893 | /* determine_prefix uses TYPE_TAG_NAME. */ | |
9894 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
9895 | ||
9896 | return set_die_type (die, type, cu); | |
9897 | } | |
9898 | ||
5d7cb8df JK |
9899 | /* Read a Fortran module. */ |
9900 | ||
9901 | static void | |
9902 | read_module (struct die_info *die, struct dwarf2_cu *cu) | |
9903 | { | |
9904 | struct die_info *child_die = die->child; | |
9905 | ||
5d7cb8df JK |
9906 | while (child_die && child_die->tag) |
9907 | { | |
9908 | process_die (child_die, cu); | |
9909 | child_die = sibling_die (child_die); | |
9910 | } | |
9911 | } | |
9912 | ||
38d518c9 EZ |
9913 | /* Return the name of the namespace represented by DIE. Set |
9914 | *IS_ANONYMOUS to tell whether or not the namespace is an anonymous | |
9915 | namespace. */ | |
9916 | ||
9917 | static const char * | |
e142c38c | 9918 | namespace_name (struct die_info *die, int *is_anonymous, struct dwarf2_cu *cu) |
38d518c9 EZ |
9919 | { |
9920 | struct die_info *current_die; | |
9921 | const char *name = NULL; | |
9922 | ||
9923 | /* Loop through the extensions until we find a name. */ | |
9924 | ||
9925 | for (current_die = die; | |
9926 | current_die != NULL; | |
f2f0e013 | 9927 | current_die = dwarf2_extension (die, &cu)) |
38d518c9 | 9928 | { |
e142c38c | 9929 | name = dwarf2_name (current_die, cu); |
38d518c9 EZ |
9930 | if (name != NULL) |
9931 | break; | |
9932 | } | |
9933 | ||
9934 | /* Is it an anonymous namespace? */ | |
9935 | ||
9936 | *is_anonymous = (name == NULL); | |
9937 | if (*is_anonymous) | |
2b1dbab0 | 9938 | name = CP_ANONYMOUS_NAMESPACE_STR; |
38d518c9 EZ |
9939 | |
9940 | return name; | |
d9fa45fe DC |
9941 | } |
9942 | ||
c906108c SS |
9943 | /* Extract all information from a DW_TAG_pointer_type DIE and add to |
9944 | the user defined type vector. */ | |
9945 | ||
f792889a | 9946 | static struct type * |
e7c27a73 | 9947 | read_tag_pointer_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 9948 | { |
5e2b427d | 9949 | struct gdbarch *gdbarch = get_objfile_arch (cu->objfile); |
e7c27a73 | 9950 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 9951 | struct type *type; |
8b2dbe47 KB |
9952 | struct attribute *attr_byte_size; |
9953 | struct attribute *attr_address_class; | |
9954 | int byte_size, addr_class; | |
7e314c57 JK |
9955 | struct type *target_type; |
9956 | ||
9957 | target_type = die_type (die, cu); | |
c906108c | 9958 | |
7e314c57 JK |
9959 | /* The die_type call above may have already set the type for this DIE. */ |
9960 | type = get_die_type (die, cu); | |
9961 | if (type) | |
9962 | return type; | |
9963 | ||
9964 | type = lookup_pointer_type (target_type); | |
8b2dbe47 | 9965 | |
e142c38c | 9966 | attr_byte_size = dwarf2_attr (die, DW_AT_byte_size, cu); |
8b2dbe47 KB |
9967 | if (attr_byte_size) |
9968 | byte_size = DW_UNSND (attr_byte_size); | |
c906108c | 9969 | else |
8b2dbe47 KB |
9970 | byte_size = cu_header->addr_size; |
9971 | ||
e142c38c | 9972 | attr_address_class = dwarf2_attr (die, DW_AT_address_class, cu); |
8b2dbe47 KB |
9973 | if (attr_address_class) |
9974 | addr_class = DW_UNSND (attr_address_class); | |
9975 | else | |
9976 | addr_class = DW_ADDR_none; | |
9977 | ||
9978 | /* If the pointer size or address class is different than the | |
9979 | default, create a type variant marked as such and set the | |
9980 | length accordingly. */ | |
9981 | if (TYPE_LENGTH (type) != byte_size || addr_class != DW_ADDR_none) | |
c906108c | 9982 | { |
5e2b427d | 9983 | if (gdbarch_address_class_type_flags_p (gdbarch)) |
8b2dbe47 KB |
9984 | { |
9985 | int type_flags; | |
9986 | ||
849957d9 | 9987 | type_flags = gdbarch_address_class_type_flags |
5e2b427d | 9988 | (gdbarch, byte_size, addr_class); |
876cecd0 TT |
9989 | gdb_assert ((type_flags & ~TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL) |
9990 | == 0); | |
8b2dbe47 KB |
9991 | type = make_type_with_address_space (type, type_flags); |
9992 | } | |
9993 | else if (TYPE_LENGTH (type) != byte_size) | |
9994 | { | |
3e43a32a MS |
9995 | complaint (&symfile_complaints, |
9996 | _("invalid pointer size %d"), byte_size); | |
8b2dbe47 | 9997 | } |
6e70227d | 9998 | else |
9a619af0 MS |
9999 | { |
10000 | /* Should we also complain about unhandled address classes? */ | |
10001 | } | |
c906108c | 10002 | } |
8b2dbe47 KB |
10003 | |
10004 | TYPE_LENGTH (type) = byte_size; | |
f792889a | 10005 | return set_die_type (die, type, cu); |
c906108c SS |
10006 | } |
10007 | ||
10008 | /* Extract all information from a DW_TAG_ptr_to_member_type DIE and add to | |
10009 | the user defined type vector. */ | |
10010 | ||
f792889a | 10011 | static struct type * |
e7c27a73 | 10012 | read_tag_ptr_to_member_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
10013 | { |
10014 | struct type *type; | |
10015 | struct type *to_type; | |
10016 | struct type *domain; | |
10017 | ||
e7c27a73 DJ |
10018 | to_type = die_type (die, cu); |
10019 | domain = die_containing_type (die, cu); | |
0d5de010 | 10020 | |
7e314c57 JK |
10021 | /* The calls above may have already set the type for this DIE. */ |
10022 | type = get_die_type (die, cu); | |
10023 | if (type) | |
10024 | return type; | |
10025 | ||
0d5de010 DJ |
10026 | if (TYPE_CODE (check_typedef (to_type)) == TYPE_CODE_METHOD) |
10027 | type = lookup_methodptr_type (to_type); | |
10028 | else | |
10029 | type = lookup_memberptr_type (to_type, domain); | |
c906108c | 10030 | |
f792889a | 10031 | return set_die_type (die, type, cu); |
c906108c SS |
10032 | } |
10033 | ||
10034 | /* Extract all information from a DW_TAG_reference_type DIE and add to | |
10035 | the user defined type vector. */ | |
10036 | ||
f792889a | 10037 | static struct type * |
e7c27a73 | 10038 | read_tag_reference_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 10039 | { |
e7c27a73 | 10040 | struct comp_unit_head *cu_header = &cu->header; |
7e314c57 | 10041 | struct type *type, *target_type; |
c906108c SS |
10042 | struct attribute *attr; |
10043 | ||
7e314c57 JK |
10044 | target_type = die_type (die, cu); |
10045 | ||
10046 | /* The die_type call above may have already set the type for this DIE. */ | |
10047 | type = get_die_type (die, cu); | |
10048 | if (type) | |
10049 | return type; | |
10050 | ||
10051 | type = lookup_reference_type (target_type); | |
e142c38c | 10052 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
10053 | if (attr) |
10054 | { | |
10055 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
10056 | } | |
10057 | else | |
10058 | { | |
107d2387 | 10059 | TYPE_LENGTH (type) = cu_header->addr_size; |
c906108c | 10060 | } |
f792889a | 10061 | return set_die_type (die, type, cu); |
c906108c SS |
10062 | } |
10063 | ||
f792889a | 10064 | static struct type * |
e7c27a73 | 10065 | read_tag_const_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 10066 | { |
f792889a | 10067 | struct type *base_type, *cv_type; |
c906108c | 10068 | |
e7c27a73 | 10069 | base_type = die_type (die, cu); |
7e314c57 JK |
10070 | |
10071 | /* The die_type call above may have already set the type for this DIE. */ | |
10072 | cv_type = get_die_type (die, cu); | |
10073 | if (cv_type) | |
10074 | return cv_type; | |
10075 | ||
2f608a3a KW |
10076 | /* In case the const qualifier is applied to an array type, the element type |
10077 | is so qualified, not the array type (section 6.7.3 of C99). */ | |
10078 | if (TYPE_CODE (base_type) == TYPE_CODE_ARRAY) | |
10079 | { | |
10080 | struct type *el_type, *inner_array; | |
10081 | ||
10082 | base_type = copy_type (base_type); | |
10083 | inner_array = base_type; | |
10084 | ||
10085 | while (TYPE_CODE (TYPE_TARGET_TYPE (inner_array)) == TYPE_CODE_ARRAY) | |
10086 | { | |
10087 | TYPE_TARGET_TYPE (inner_array) = | |
10088 | copy_type (TYPE_TARGET_TYPE (inner_array)); | |
10089 | inner_array = TYPE_TARGET_TYPE (inner_array); | |
10090 | } | |
10091 | ||
10092 | el_type = TYPE_TARGET_TYPE (inner_array); | |
10093 | TYPE_TARGET_TYPE (inner_array) = | |
10094 | make_cv_type (1, TYPE_VOLATILE (el_type), el_type, NULL); | |
10095 | ||
10096 | return set_die_type (die, base_type, cu); | |
10097 | } | |
10098 | ||
f792889a DJ |
10099 | cv_type = make_cv_type (1, TYPE_VOLATILE (base_type), base_type, 0); |
10100 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
10101 | } |
10102 | ||
f792889a | 10103 | static struct type * |
e7c27a73 | 10104 | read_tag_volatile_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 10105 | { |
f792889a | 10106 | struct type *base_type, *cv_type; |
c906108c | 10107 | |
e7c27a73 | 10108 | base_type = die_type (die, cu); |
7e314c57 JK |
10109 | |
10110 | /* The die_type call above may have already set the type for this DIE. */ | |
10111 | cv_type = get_die_type (die, cu); | |
10112 | if (cv_type) | |
10113 | return cv_type; | |
10114 | ||
f792889a DJ |
10115 | cv_type = make_cv_type (TYPE_CONST (base_type), 1, base_type, 0); |
10116 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
10117 | } |
10118 | ||
10119 | /* Extract all information from a DW_TAG_string_type DIE and add to | |
10120 | the user defined type vector. It isn't really a user defined type, | |
10121 | but it behaves like one, with other DIE's using an AT_user_def_type | |
10122 | attribute to reference it. */ | |
10123 | ||
f792889a | 10124 | static struct type * |
e7c27a73 | 10125 | read_tag_string_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 10126 | { |
e7c27a73 | 10127 | struct objfile *objfile = cu->objfile; |
3b7538c0 | 10128 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
10129 | struct type *type, *range_type, *index_type, *char_type; |
10130 | struct attribute *attr; | |
10131 | unsigned int length; | |
10132 | ||
e142c38c | 10133 | attr = dwarf2_attr (die, DW_AT_string_length, cu); |
c906108c SS |
10134 | if (attr) |
10135 | { | |
10136 | length = DW_UNSND (attr); | |
10137 | } | |
10138 | else | |
10139 | { | |
0963b4bd | 10140 | /* Check for the DW_AT_byte_size attribute. */ |
e142c38c | 10141 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
b21b22e0 PS |
10142 | if (attr) |
10143 | { | |
10144 | length = DW_UNSND (attr); | |
10145 | } | |
10146 | else | |
10147 | { | |
10148 | length = 1; | |
10149 | } | |
c906108c | 10150 | } |
6ccb9162 | 10151 | |
46bf5051 | 10152 | index_type = objfile_type (objfile)->builtin_int; |
c906108c | 10153 | range_type = create_range_type (NULL, index_type, 1, length); |
3b7538c0 UW |
10154 | char_type = language_string_char_type (cu->language_defn, gdbarch); |
10155 | type = create_string_type (NULL, char_type, range_type); | |
6ccb9162 | 10156 | |
f792889a | 10157 | return set_die_type (die, type, cu); |
c906108c SS |
10158 | } |
10159 | ||
10160 | /* Handle DIES due to C code like: | |
10161 | ||
10162 | struct foo | |
c5aa993b JM |
10163 | { |
10164 | int (*funcp)(int a, long l); | |
10165 | int b; | |
10166 | }; | |
c906108c | 10167 | |
0963b4bd | 10168 | ('funcp' generates a DW_TAG_subroutine_type DIE). */ |
c906108c | 10169 | |
f792889a | 10170 | static struct type * |
e7c27a73 | 10171 | read_subroutine_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 10172 | { |
bb5ed363 | 10173 | struct objfile *objfile = cu->objfile; |
0963b4bd MS |
10174 | struct type *type; /* Type that this function returns. */ |
10175 | struct type *ftype; /* Function that returns above type. */ | |
c906108c SS |
10176 | struct attribute *attr; |
10177 | ||
e7c27a73 | 10178 | type = die_type (die, cu); |
7e314c57 JK |
10179 | |
10180 | /* The die_type call above may have already set the type for this DIE. */ | |
10181 | ftype = get_die_type (die, cu); | |
10182 | if (ftype) | |
10183 | return ftype; | |
10184 | ||
0c8b41f1 | 10185 | ftype = lookup_function_type (type); |
c906108c | 10186 | |
5b8101ae | 10187 | /* All functions in C++, Pascal and Java have prototypes. */ |
e142c38c | 10188 | attr = dwarf2_attr (die, DW_AT_prototyped, cu); |
c906108c | 10189 | if ((attr && (DW_UNSND (attr) != 0)) |
987504bb | 10190 | || cu->language == language_cplus |
5b8101ae PM |
10191 | || cu->language == language_java |
10192 | || cu->language == language_pascal) | |
876cecd0 | 10193 | TYPE_PROTOTYPED (ftype) = 1; |
a6c727b2 DJ |
10194 | else if (producer_is_realview (cu->producer)) |
10195 | /* RealView does not emit DW_AT_prototyped. We can not | |
10196 | distinguish prototyped and unprototyped functions; default to | |
10197 | prototyped, since that is more common in modern code (and | |
10198 | RealView warns about unprototyped functions). */ | |
10199 | TYPE_PROTOTYPED (ftype) = 1; | |
c906108c | 10200 | |
c055b101 CV |
10201 | /* Store the calling convention in the type if it's available in |
10202 | the subroutine die. Otherwise set the calling convention to | |
10203 | the default value DW_CC_normal. */ | |
10204 | attr = dwarf2_attr (die, DW_AT_calling_convention, cu); | |
54fcddd0 UW |
10205 | if (attr) |
10206 | TYPE_CALLING_CONVENTION (ftype) = DW_UNSND (attr); | |
10207 | else if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL")) | |
10208 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_GDB_IBM_OpenCL; | |
10209 | else | |
10210 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_normal; | |
76c10ea2 GM |
10211 | |
10212 | /* We need to add the subroutine type to the die immediately so | |
10213 | we don't infinitely recurse when dealing with parameters | |
0963b4bd | 10214 | declared as the same subroutine type. */ |
76c10ea2 | 10215 | set_die_type (die, ftype, cu); |
6e70227d | 10216 | |
639d11d3 | 10217 | if (die->child != NULL) |
c906108c | 10218 | { |
bb5ed363 | 10219 | struct type *void_type = objfile_type (objfile)->builtin_void; |
c906108c | 10220 | struct die_info *child_die; |
8072405b | 10221 | int nparams, iparams; |
c906108c SS |
10222 | |
10223 | /* Count the number of parameters. | |
10224 | FIXME: GDB currently ignores vararg functions, but knows about | |
10225 | vararg member functions. */ | |
8072405b | 10226 | nparams = 0; |
639d11d3 | 10227 | child_die = die->child; |
c906108c SS |
10228 | while (child_die && child_die->tag) |
10229 | { | |
10230 | if (child_die->tag == DW_TAG_formal_parameter) | |
10231 | nparams++; | |
10232 | else if (child_die->tag == DW_TAG_unspecified_parameters) | |
876cecd0 | 10233 | TYPE_VARARGS (ftype) = 1; |
c906108c SS |
10234 | child_die = sibling_die (child_die); |
10235 | } | |
10236 | ||
10237 | /* Allocate storage for parameters and fill them in. */ | |
10238 | TYPE_NFIELDS (ftype) = nparams; | |
10239 | TYPE_FIELDS (ftype) = (struct field *) | |
ae5a43e0 | 10240 | TYPE_ZALLOC (ftype, nparams * sizeof (struct field)); |
c906108c | 10241 | |
8072405b JK |
10242 | /* TYPE_FIELD_TYPE must never be NULL. Pre-fill the array to ensure it |
10243 | even if we error out during the parameters reading below. */ | |
10244 | for (iparams = 0; iparams < nparams; iparams++) | |
10245 | TYPE_FIELD_TYPE (ftype, iparams) = void_type; | |
10246 | ||
10247 | iparams = 0; | |
639d11d3 | 10248 | child_die = die->child; |
c906108c SS |
10249 | while (child_die && child_die->tag) |
10250 | { | |
10251 | if (child_die->tag == DW_TAG_formal_parameter) | |
10252 | { | |
3ce3b1ba PA |
10253 | struct type *arg_type; |
10254 | ||
10255 | /* DWARF version 2 has no clean way to discern C++ | |
10256 | static and non-static member functions. G++ helps | |
10257 | GDB by marking the first parameter for non-static | |
10258 | member functions (which is the this pointer) as | |
10259 | artificial. We pass this information to | |
10260 | dwarf2_add_member_fn via TYPE_FIELD_ARTIFICIAL. | |
10261 | ||
10262 | DWARF version 3 added DW_AT_object_pointer, which GCC | |
10263 | 4.5 does not yet generate. */ | |
e142c38c | 10264 | attr = dwarf2_attr (child_die, DW_AT_artificial, cu); |
c906108c SS |
10265 | if (attr) |
10266 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = DW_UNSND (attr); | |
10267 | else | |
418835cc KS |
10268 | { |
10269 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; | |
10270 | ||
10271 | /* GCC/43521: In java, the formal parameter | |
10272 | "this" is sometimes not marked with DW_AT_artificial. */ | |
10273 | if (cu->language == language_java) | |
10274 | { | |
10275 | const char *name = dwarf2_name (child_die, cu); | |
9a619af0 | 10276 | |
418835cc KS |
10277 | if (name && !strcmp (name, "this")) |
10278 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 1; | |
10279 | } | |
10280 | } | |
3ce3b1ba PA |
10281 | arg_type = die_type (child_die, cu); |
10282 | ||
10283 | /* RealView does not mark THIS as const, which the testsuite | |
10284 | expects. GCC marks THIS as const in method definitions, | |
10285 | but not in the class specifications (GCC PR 43053). */ | |
10286 | if (cu->language == language_cplus && !TYPE_CONST (arg_type) | |
10287 | && TYPE_FIELD_ARTIFICIAL (ftype, iparams)) | |
10288 | { | |
10289 | int is_this = 0; | |
10290 | struct dwarf2_cu *arg_cu = cu; | |
10291 | const char *name = dwarf2_name (child_die, cu); | |
10292 | ||
10293 | attr = dwarf2_attr (die, DW_AT_object_pointer, cu); | |
10294 | if (attr) | |
10295 | { | |
10296 | /* If the compiler emits this, use it. */ | |
10297 | if (follow_die_ref (die, attr, &arg_cu) == child_die) | |
10298 | is_this = 1; | |
10299 | } | |
10300 | else if (name && strcmp (name, "this") == 0) | |
10301 | /* Function definitions will have the argument names. */ | |
10302 | is_this = 1; | |
10303 | else if (name == NULL && iparams == 0) | |
10304 | /* Declarations may not have the names, so like | |
10305 | elsewhere in GDB, assume an artificial first | |
10306 | argument is "this". */ | |
10307 | is_this = 1; | |
10308 | ||
10309 | if (is_this) | |
10310 | arg_type = make_cv_type (1, TYPE_VOLATILE (arg_type), | |
10311 | arg_type, 0); | |
10312 | } | |
10313 | ||
10314 | TYPE_FIELD_TYPE (ftype, iparams) = arg_type; | |
c906108c SS |
10315 | iparams++; |
10316 | } | |
10317 | child_die = sibling_die (child_die); | |
10318 | } | |
10319 | } | |
10320 | ||
76c10ea2 | 10321 | return ftype; |
c906108c SS |
10322 | } |
10323 | ||
f792889a | 10324 | static struct type * |
e7c27a73 | 10325 | read_typedef (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 10326 | { |
e7c27a73 | 10327 | struct objfile *objfile = cu->objfile; |
0114d602 | 10328 | const char *name = NULL; |
3c8e0968 | 10329 | struct type *this_type, *target_type; |
c906108c | 10330 | |
94af9270 | 10331 | name = dwarf2_full_name (NULL, die, cu); |
f792889a | 10332 | this_type = init_type (TYPE_CODE_TYPEDEF, 0, |
0114d602 DJ |
10333 | TYPE_FLAG_TARGET_STUB, NULL, objfile); |
10334 | TYPE_NAME (this_type) = (char *) name; | |
f792889a | 10335 | set_die_type (die, this_type, cu); |
3c8e0968 DE |
10336 | target_type = die_type (die, cu); |
10337 | if (target_type != this_type) | |
10338 | TYPE_TARGET_TYPE (this_type) = target_type; | |
10339 | else | |
10340 | { | |
10341 | /* Self-referential typedefs are, it seems, not allowed by the DWARF | |
10342 | spec and cause infinite loops in GDB. */ | |
10343 | complaint (&symfile_complaints, | |
10344 | _("Self-referential DW_TAG_typedef " | |
10345 | "- DIE at 0x%x [in module %s]"), | |
b64f50a1 | 10346 | die->offset.sect_off, objfile->name); |
3c8e0968 DE |
10347 | TYPE_TARGET_TYPE (this_type) = NULL; |
10348 | } | |
f792889a | 10349 | return this_type; |
c906108c SS |
10350 | } |
10351 | ||
10352 | /* Find a representation of a given base type and install | |
10353 | it in the TYPE field of the die. */ | |
10354 | ||
f792889a | 10355 | static struct type * |
e7c27a73 | 10356 | read_base_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 10357 | { |
e7c27a73 | 10358 | struct objfile *objfile = cu->objfile; |
c906108c SS |
10359 | struct type *type; |
10360 | struct attribute *attr; | |
10361 | int encoding = 0, size = 0; | |
39cbfefa | 10362 | char *name; |
6ccb9162 UW |
10363 | enum type_code code = TYPE_CODE_INT; |
10364 | int type_flags = 0; | |
10365 | struct type *target_type = NULL; | |
c906108c | 10366 | |
e142c38c | 10367 | attr = dwarf2_attr (die, DW_AT_encoding, cu); |
c906108c SS |
10368 | if (attr) |
10369 | { | |
10370 | encoding = DW_UNSND (attr); | |
10371 | } | |
e142c38c | 10372 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
10373 | if (attr) |
10374 | { | |
10375 | size = DW_UNSND (attr); | |
10376 | } | |
39cbfefa | 10377 | name = dwarf2_name (die, cu); |
6ccb9162 | 10378 | if (!name) |
c906108c | 10379 | { |
6ccb9162 UW |
10380 | complaint (&symfile_complaints, |
10381 | _("DW_AT_name missing from DW_TAG_base_type")); | |
c906108c | 10382 | } |
6ccb9162 UW |
10383 | |
10384 | switch (encoding) | |
c906108c | 10385 | { |
6ccb9162 UW |
10386 | case DW_ATE_address: |
10387 | /* Turn DW_ATE_address into a void * pointer. */ | |
10388 | code = TYPE_CODE_PTR; | |
10389 | type_flags |= TYPE_FLAG_UNSIGNED; | |
10390 | target_type = init_type (TYPE_CODE_VOID, 1, 0, NULL, objfile); | |
10391 | break; | |
10392 | case DW_ATE_boolean: | |
10393 | code = TYPE_CODE_BOOL; | |
10394 | type_flags |= TYPE_FLAG_UNSIGNED; | |
10395 | break; | |
10396 | case DW_ATE_complex_float: | |
10397 | code = TYPE_CODE_COMPLEX; | |
10398 | target_type = init_type (TYPE_CODE_FLT, size / 2, 0, NULL, objfile); | |
10399 | break; | |
10400 | case DW_ATE_decimal_float: | |
10401 | code = TYPE_CODE_DECFLOAT; | |
10402 | break; | |
10403 | case DW_ATE_float: | |
10404 | code = TYPE_CODE_FLT; | |
10405 | break; | |
10406 | case DW_ATE_signed: | |
10407 | break; | |
10408 | case DW_ATE_unsigned: | |
10409 | type_flags |= TYPE_FLAG_UNSIGNED; | |
3b2b8fea TT |
10410 | if (cu->language == language_fortran |
10411 | && name | |
10412 | && strncmp (name, "character(", sizeof ("character(") - 1) == 0) | |
10413 | code = TYPE_CODE_CHAR; | |
6ccb9162 UW |
10414 | break; |
10415 | case DW_ATE_signed_char: | |
6e70227d | 10416 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea TT |
10417 | || cu->language == language_pascal |
10418 | || cu->language == language_fortran) | |
6ccb9162 UW |
10419 | code = TYPE_CODE_CHAR; |
10420 | break; | |
10421 | case DW_ATE_unsigned_char: | |
868a0084 | 10422 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea TT |
10423 | || cu->language == language_pascal |
10424 | || cu->language == language_fortran) | |
6ccb9162 UW |
10425 | code = TYPE_CODE_CHAR; |
10426 | type_flags |= TYPE_FLAG_UNSIGNED; | |
10427 | break; | |
75079b2b TT |
10428 | case DW_ATE_UTF: |
10429 | /* We just treat this as an integer and then recognize the | |
10430 | type by name elsewhere. */ | |
10431 | break; | |
10432 | ||
6ccb9162 UW |
10433 | default: |
10434 | complaint (&symfile_complaints, _("unsupported DW_AT_encoding: '%s'"), | |
10435 | dwarf_type_encoding_name (encoding)); | |
10436 | break; | |
c906108c | 10437 | } |
6ccb9162 | 10438 | |
0114d602 DJ |
10439 | type = init_type (code, size, type_flags, NULL, objfile); |
10440 | TYPE_NAME (type) = name; | |
6ccb9162 UW |
10441 | TYPE_TARGET_TYPE (type) = target_type; |
10442 | ||
0114d602 | 10443 | if (name && strcmp (name, "char") == 0) |
876cecd0 | 10444 | TYPE_NOSIGN (type) = 1; |
0114d602 | 10445 | |
f792889a | 10446 | return set_die_type (die, type, cu); |
c906108c SS |
10447 | } |
10448 | ||
a02abb62 JB |
10449 | /* Read the given DW_AT_subrange DIE. */ |
10450 | ||
f792889a | 10451 | static struct type * |
a02abb62 JB |
10452 | read_subrange_type (struct die_info *die, struct dwarf2_cu *cu) |
10453 | { | |
10454 | struct type *base_type; | |
10455 | struct type *range_type; | |
10456 | struct attribute *attr; | |
4fae6e18 JK |
10457 | LONGEST low, high; |
10458 | int low_default_is_valid; | |
39cbfefa | 10459 | char *name; |
43bbcdc2 | 10460 | LONGEST negative_mask; |
e77813c8 | 10461 | |
a02abb62 | 10462 | base_type = die_type (die, cu); |
953ac07e JK |
10463 | /* Preserve BASE_TYPE's original type, just set its LENGTH. */ |
10464 | check_typedef (base_type); | |
a02abb62 | 10465 | |
7e314c57 JK |
10466 | /* The die_type call above may have already set the type for this DIE. */ |
10467 | range_type = get_die_type (die, cu); | |
10468 | if (range_type) | |
10469 | return range_type; | |
10470 | ||
4fae6e18 JK |
10471 | /* Set LOW_DEFAULT_IS_VALID if current language and DWARF version allow |
10472 | omitting DW_AT_lower_bound. */ | |
10473 | switch (cu->language) | |
6e70227d | 10474 | { |
4fae6e18 JK |
10475 | case language_c: |
10476 | case language_cplus: | |
10477 | low = 0; | |
10478 | low_default_is_valid = 1; | |
10479 | break; | |
10480 | case language_fortran: | |
10481 | low = 1; | |
10482 | low_default_is_valid = 1; | |
10483 | break; | |
10484 | case language_d: | |
10485 | case language_java: | |
10486 | case language_objc: | |
10487 | low = 0; | |
10488 | low_default_is_valid = (cu->header.version >= 4); | |
10489 | break; | |
10490 | case language_ada: | |
10491 | case language_m2: | |
10492 | case language_pascal: | |
a02abb62 | 10493 | low = 1; |
4fae6e18 JK |
10494 | low_default_is_valid = (cu->header.version >= 4); |
10495 | break; | |
10496 | default: | |
10497 | low = 0; | |
10498 | low_default_is_valid = 0; | |
10499 | break; | |
a02abb62 JB |
10500 | } |
10501 | ||
dd5e6932 DJ |
10502 | /* FIXME: For variable sized arrays either of these could be |
10503 | a variable rather than a constant value. We'll allow it, | |
10504 | but we don't know how to handle it. */ | |
e142c38c | 10505 | attr = dwarf2_attr (die, DW_AT_lower_bound, cu); |
a02abb62 | 10506 | if (attr) |
4fae6e18 JK |
10507 | low = dwarf2_get_attr_constant_value (attr, low); |
10508 | else if (!low_default_is_valid) | |
10509 | complaint (&symfile_complaints, _("Missing DW_AT_lower_bound " | |
10510 | "- DIE at 0x%x [in module %s]"), | |
10511 | die->offset.sect_off, cu->objfile->name); | |
a02abb62 | 10512 | |
e142c38c | 10513 | attr = dwarf2_attr (die, DW_AT_upper_bound, cu); |
a02abb62 | 10514 | if (attr) |
6e70227d | 10515 | { |
d48323d8 | 10516 | if (attr_form_is_block (attr) || is_ref_attr (attr)) |
a02abb62 JB |
10517 | { |
10518 | /* GCC encodes arrays with unspecified or dynamic length | |
e77813c8 | 10519 | with a DW_FORM_block1 attribute or a reference attribute. |
a02abb62 JB |
10520 | FIXME: GDB does not yet know how to handle dynamic |
10521 | arrays properly, treat them as arrays with unspecified | |
10522 | length for now. | |
10523 | ||
10524 | FIXME: jimb/2003-09-22: GDB does not really know | |
10525 | how to handle arrays of unspecified length | |
10526 | either; we just represent them as zero-length | |
10527 | arrays. Choose an appropriate upper bound given | |
10528 | the lower bound we've computed above. */ | |
10529 | high = low - 1; | |
10530 | } | |
10531 | else | |
10532 | high = dwarf2_get_attr_constant_value (attr, 1); | |
10533 | } | |
e77813c8 PM |
10534 | else |
10535 | { | |
10536 | attr = dwarf2_attr (die, DW_AT_count, cu); | |
10537 | if (attr) | |
10538 | { | |
10539 | int count = dwarf2_get_attr_constant_value (attr, 1); | |
10540 | high = low + count - 1; | |
10541 | } | |
c2ff108b JK |
10542 | else |
10543 | { | |
10544 | /* Unspecified array length. */ | |
10545 | high = low - 1; | |
10546 | } | |
e77813c8 PM |
10547 | } |
10548 | ||
10549 | /* Dwarf-2 specifications explicitly allows to create subrange types | |
10550 | without specifying a base type. | |
10551 | In that case, the base type must be set to the type of | |
10552 | the lower bound, upper bound or count, in that order, if any of these | |
10553 | three attributes references an object that has a type. | |
10554 | If no base type is found, the Dwarf-2 specifications say that | |
10555 | a signed integer type of size equal to the size of an address should | |
10556 | be used. | |
10557 | For the following C code: `extern char gdb_int [];' | |
10558 | GCC produces an empty range DIE. | |
10559 | FIXME: muller/2010-05-28: Possible references to object for low bound, | |
0963b4bd | 10560 | high bound or count are not yet handled by this code. */ |
e77813c8 PM |
10561 | if (TYPE_CODE (base_type) == TYPE_CODE_VOID) |
10562 | { | |
10563 | struct objfile *objfile = cu->objfile; | |
10564 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
10565 | int addr_size = gdbarch_addr_bit (gdbarch) /8; | |
10566 | struct type *int_type = objfile_type (objfile)->builtin_int; | |
10567 | ||
10568 | /* Test "int", "long int", and "long long int" objfile types, | |
10569 | and select the first one having a size above or equal to the | |
10570 | architecture address size. */ | |
10571 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
10572 | base_type = int_type; | |
10573 | else | |
10574 | { | |
10575 | int_type = objfile_type (objfile)->builtin_long; | |
10576 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
10577 | base_type = int_type; | |
10578 | else | |
10579 | { | |
10580 | int_type = objfile_type (objfile)->builtin_long_long; | |
10581 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
10582 | base_type = int_type; | |
10583 | } | |
10584 | } | |
10585 | } | |
a02abb62 | 10586 | |
6e70227d | 10587 | negative_mask = |
43bbcdc2 PH |
10588 | (LONGEST) -1 << (TYPE_LENGTH (base_type) * TARGET_CHAR_BIT - 1); |
10589 | if (!TYPE_UNSIGNED (base_type) && (low & negative_mask)) | |
10590 | low |= negative_mask; | |
10591 | if (!TYPE_UNSIGNED (base_type) && (high & negative_mask)) | |
10592 | high |= negative_mask; | |
10593 | ||
a02abb62 JB |
10594 | range_type = create_range_type (NULL, base_type, low, high); |
10595 | ||
bbb0eef6 JK |
10596 | /* Mark arrays with dynamic length at least as an array of unspecified |
10597 | length. GDB could check the boundary but before it gets implemented at | |
10598 | least allow accessing the array elements. */ | |
d48323d8 | 10599 | if (attr && attr_form_is_block (attr)) |
bbb0eef6 JK |
10600 | TYPE_HIGH_BOUND_UNDEFINED (range_type) = 1; |
10601 | ||
c2ff108b JK |
10602 | /* Ada expects an empty array on no boundary attributes. */ |
10603 | if (attr == NULL && cu->language != language_ada) | |
10604 | TYPE_HIGH_BOUND_UNDEFINED (range_type) = 1; | |
10605 | ||
39cbfefa DJ |
10606 | name = dwarf2_name (die, cu); |
10607 | if (name) | |
10608 | TYPE_NAME (range_type) = name; | |
6e70227d | 10609 | |
e142c38c | 10610 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
a02abb62 JB |
10611 | if (attr) |
10612 | TYPE_LENGTH (range_type) = DW_UNSND (attr); | |
10613 | ||
7e314c57 JK |
10614 | set_die_type (die, range_type, cu); |
10615 | ||
10616 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
10617 | set_descriptive_type (range_type, die, cu); |
10618 | ||
7e314c57 | 10619 | return range_type; |
a02abb62 | 10620 | } |
6e70227d | 10621 | |
f792889a | 10622 | static struct type * |
81a17f79 JB |
10623 | read_unspecified_type (struct die_info *die, struct dwarf2_cu *cu) |
10624 | { | |
10625 | struct type *type; | |
81a17f79 | 10626 | |
81a17f79 JB |
10627 | /* For now, we only support the C meaning of an unspecified type: void. */ |
10628 | ||
0114d602 DJ |
10629 | type = init_type (TYPE_CODE_VOID, 0, 0, NULL, cu->objfile); |
10630 | TYPE_NAME (type) = dwarf2_name (die, cu); | |
81a17f79 | 10631 | |
f792889a | 10632 | return set_die_type (die, type, cu); |
81a17f79 | 10633 | } |
a02abb62 | 10634 | |
639d11d3 DC |
10635 | /* Read a single die and all its descendents. Set the die's sibling |
10636 | field to NULL; set other fields in the die correctly, and set all | |
10637 | of the descendents' fields correctly. Set *NEW_INFO_PTR to the | |
10638 | location of the info_ptr after reading all of those dies. PARENT | |
10639 | is the parent of the die in question. */ | |
10640 | ||
10641 | static struct die_info * | |
dee91e82 DE |
10642 | read_die_and_children (const struct die_reader_specs *reader, |
10643 | gdb_byte *info_ptr, | |
10644 | gdb_byte **new_info_ptr, | |
10645 | struct die_info *parent) | |
639d11d3 DC |
10646 | { |
10647 | struct die_info *die; | |
fe1b8b76 | 10648 | gdb_byte *cur_ptr; |
639d11d3 DC |
10649 | int has_children; |
10650 | ||
93311388 | 10651 | cur_ptr = read_full_die (reader, &die, info_ptr, &has_children); |
1d325ec1 DJ |
10652 | if (die == NULL) |
10653 | { | |
10654 | *new_info_ptr = cur_ptr; | |
10655 | return NULL; | |
10656 | } | |
93311388 | 10657 | store_in_ref_table (die, reader->cu); |
639d11d3 DC |
10658 | |
10659 | if (has_children) | |
348e048f | 10660 | die->child = read_die_and_siblings (reader, cur_ptr, new_info_ptr, die); |
639d11d3 DC |
10661 | else |
10662 | { | |
10663 | die->child = NULL; | |
10664 | *new_info_ptr = cur_ptr; | |
10665 | } | |
10666 | ||
10667 | die->sibling = NULL; | |
10668 | die->parent = parent; | |
10669 | return die; | |
10670 | } | |
10671 | ||
10672 | /* Read a die, all of its descendents, and all of its siblings; set | |
10673 | all of the fields of all of the dies correctly. Arguments are as | |
10674 | in read_die_and_children. */ | |
10675 | ||
10676 | static struct die_info * | |
93311388 DE |
10677 | read_die_and_siblings (const struct die_reader_specs *reader, |
10678 | gdb_byte *info_ptr, | |
fe1b8b76 | 10679 | gdb_byte **new_info_ptr, |
639d11d3 DC |
10680 | struct die_info *parent) |
10681 | { | |
10682 | struct die_info *first_die, *last_sibling; | |
fe1b8b76 | 10683 | gdb_byte *cur_ptr; |
639d11d3 | 10684 | |
c906108c | 10685 | cur_ptr = info_ptr; |
639d11d3 DC |
10686 | first_die = last_sibling = NULL; |
10687 | ||
10688 | while (1) | |
c906108c | 10689 | { |
639d11d3 | 10690 | struct die_info *die |
dee91e82 | 10691 | = read_die_and_children (reader, cur_ptr, &cur_ptr, parent); |
639d11d3 | 10692 | |
1d325ec1 | 10693 | if (die == NULL) |
c906108c | 10694 | { |
639d11d3 DC |
10695 | *new_info_ptr = cur_ptr; |
10696 | return first_die; | |
c906108c | 10697 | } |
1d325ec1 DJ |
10698 | |
10699 | if (!first_die) | |
10700 | first_die = die; | |
c906108c | 10701 | else |
1d325ec1 DJ |
10702 | last_sibling->sibling = die; |
10703 | ||
10704 | last_sibling = die; | |
c906108c | 10705 | } |
c906108c SS |
10706 | } |
10707 | ||
3019eac3 DE |
10708 | /* Read a die and all its attributes, leave space for NUM_EXTRA_ATTRS |
10709 | attributes. | |
10710 | The caller is responsible for filling in the extra attributes | |
10711 | and updating (*DIEP)->num_attrs. | |
10712 | Set DIEP to point to a newly allocated die with its information, | |
10713 | except for its child, sibling, and parent fields. | |
10714 | Set HAS_CHILDREN to tell whether the die has children or not. */ | |
93311388 DE |
10715 | |
10716 | static gdb_byte * | |
3019eac3 DE |
10717 | read_full_die_1 (const struct die_reader_specs *reader, |
10718 | struct die_info **diep, gdb_byte *info_ptr, | |
10719 | int *has_children, int num_extra_attrs) | |
93311388 | 10720 | { |
b64f50a1 JK |
10721 | unsigned int abbrev_number, bytes_read, i; |
10722 | sect_offset offset; | |
93311388 DE |
10723 | struct abbrev_info *abbrev; |
10724 | struct die_info *die; | |
10725 | struct dwarf2_cu *cu = reader->cu; | |
10726 | bfd *abfd = reader->abfd; | |
10727 | ||
b64f50a1 | 10728 | offset.sect_off = info_ptr - reader->buffer; |
93311388 DE |
10729 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
10730 | info_ptr += bytes_read; | |
10731 | if (!abbrev_number) | |
10732 | { | |
10733 | *diep = NULL; | |
10734 | *has_children = 0; | |
10735 | return info_ptr; | |
10736 | } | |
10737 | ||
10738 | abbrev = dwarf2_lookup_abbrev (abbrev_number, cu); | |
10739 | if (!abbrev) | |
348e048f DE |
10740 | error (_("Dwarf Error: could not find abbrev number %d [in module %s]"), |
10741 | abbrev_number, | |
10742 | bfd_get_filename (abfd)); | |
10743 | ||
3019eac3 | 10744 | die = dwarf_alloc_die (cu, abbrev->num_attrs + num_extra_attrs); |
93311388 DE |
10745 | die->offset = offset; |
10746 | die->tag = abbrev->tag; | |
10747 | die->abbrev = abbrev_number; | |
10748 | ||
3019eac3 DE |
10749 | /* Make the result usable. |
10750 | The caller needs to update num_attrs after adding the extra | |
10751 | attributes. */ | |
93311388 DE |
10752 | die->num_attrs = abbrev->num_attrs; |
10753 | ||
10754 | for (i = 0; i < abbrev->num_attrs; ++i) | |
dee91e82 DE |
10755 | info_ptr = read_attribute (reader, &die->attrs[i], &abbrev->attrs[i], |
10756 | info_ptr); | |
93311388 DE |
10757 | |
10758 | *diep = die; | |
10759 | *has_children = abbrev->has_children; | |
10760 | return info_ptr; | |
10761 | } | |
10762 | ||
3019eac3 DE |
10763 | /* Read a die and all its attributes. |
10764 | Set DIEP to point to a newly allocated die with its information, | |
10765 | except for its child, sibling, and parent fields. | |
10766 | Set HAS_CHILDREN to tell whether the die has children or not. */ | |
10767 | ||
10768 | static gdb_byte * | |
10769 | read_full_die (const struct die_reader_specs *reader, | |
10770 | struct die_info **diep, gdb_byte *info_ptr, | |
10771 | int *has_children) | |
10772 | { | |
10773 | return read_full_die_1 (reader, diep, info_ptr, has_children, 0); | |
10774 | } | |
10775 | ||
c906108c SS |
10776 | /* In DWARF version 2, the description of the debugging information is |
10777 | stored in a separate .debug_abbrev section. Before we read any | |
10778 | dies from a section we read in all abbreviations and install them | |
72bf9492 DJ |
10779 | in a hash table. This function also sets flags in CU describing |
10780 | the data found in the abbrev table. */ | |
c906108c SS |
10781 | |
10782 | static void | |
dee91e82 DE |
10783 | dwarf2_read_abbrevs (struct dwarf2_cu *cu, |
10784 | struct dwarf2_section_info *abbrev_section) | |
10785 | ||
c906108c | 10786 | { |
dee91e82 | 10787 | bfd *abfd = abbrev_section->asection->owner; |
e7c27a73 | 10788 | struct comp_unit_head *cu_header = &cu->header; |
fe1b8b76 | 10789 | gdb_byte *abbrev_ptr; |
c906108c SS |
10790 | struct abbrev_info *cur_abbrev; |
10791 | unsigned int abbrev_number, bytes_read, abbrev_name; | |
10792 | unsigned int abbrev_form, hash_number; | |
f3dd6933 DJ |
10793 | struct attr_abbrev *cur_attrs; |
10794 | unsigned int allocated_attrs; | |
c906108c | 10795 | |
0963b4bd | 10796 | /* Initialize dwarf2 abbrevs. */ |
f3dd6933 DJ |
10797 | obstack_init (&cu->abbrev_obstack); |
10798 | cu->dwarf2_abbrevs = obstack_alloc (&cu->abbrev_obstack, | |
10799 | (ABBREV_HASH_SIZE | |
10800 | * sizeof (struct abbrev_info *))); | |
10801 | memset (cu->dwarf2_abbrevs, 0, | |
10802 | ABBREV_HASH_SIZE * sizeof (struct abbrev_info *)); | |
c906108c | 10803 | |
dee91e82 DE |
10804 | dwarf2_read_section (cu->objfile, abbrev_section); |
10805 | abbrev_ptr = abbrev_section->buffer + cu_header->abbrev_offset.sect_off; | |
c906108c SS |
10806 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
10807 | abbrev_ptr += bytes_read; | |
10808 | ||
f3dd6933 DJ |
10809 | allocated_attrs = ATTR_ALLOC_CHUNK; |
10810 | cur_attrs = xmalloc (allocated_attrs * sizeof (struct attr_abbrev)); | |
6e70227d | 10811 | |
0963b4bd | 10812 | /* Loop until we reach an abbrev number of 0. */ |
c906108c SS |
10813 | while (abbrev_number) |
10814 | { | |
f3dd6933 | 10815 | cur_abbrev = dwarf_alloc_abbrev (cu); |
c906108c SS |
10816 | |
10817 | /* read in abbrev header */ | |
10818 | cur_abbrev->number = abbrev_number; | |
10819 | cur_abbrev->tag = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
10820 | abbrev_ptr += bytes_read; | |
10821 | cur_abbrev->has_children = read_1_byte (abfd, abbrev_ptr); | |
10822 | abbrev_ptr += 1; | |
10823 | ||
10824 | /* now read in declarations */ | |
10825 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
10826 | abbrev_ptr += bytes_read; | |
10827 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
10828 | abbrev_ptr += bytes_read; | |
10829 | while (abbrev_name) | |
10830 | { | |
f3dd6933 | 10831 | if (cur_abbrev->num_attrs == allocated_attrs) |
c906108c | 10832 | { |
f3dd6933 DJ |
10833 | allocated_attrs += ATTR_ALLOC_CHUNK; |
10834 | cur_attrs | |
10835 | = xrealloc (cur_attrs, (allocated_attrs | |
10836 | * sizeof (struct attr_abbrev))); | |
c906108c | 10837 | } |
ae038cb0 | 10838 | |
f3dd6933 DJ |
10839 | cur_attrs[cur_abbrev->num_attrs].name = abbrev_name; |
10840 | cur_attrs[cur_abbrev->num_attrs++].form = abbrev_form; | |
c906108c SS |
10841 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
10842 | abbrev_ptr += bytes_read; | |
10843 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
10844 | abbrev_ptr += bytes_read; | |
10845 | } | |
10846 | ||
f3dd6933 DJ |
10847 | cur_abbrev->attrs = obstack_alloc (&cu->abbrev_obstack, |
10848 | (cur_abbrev->num_attrs | |
10849 | * sizeof (struct attr_abbrev))); | |
10850 | memcpy (cur_abbrev->attrs, cur_attrs, | |
10851 | cur_abbrev->num_attrs * sizeof (struct attr_abbrev)); | |
10852 | ||
c906108c | 10853 | hash_number = abbrev_number % ABBREV_HASH_SIZE; |
f3dd6933 DJ |
10854 | cur_abbrev->next = cu->dwarf2_abbrevs[hash_number]; |
10855 | cu->dwarf2_abbrevs[hash_number] = cur_abbrev; | |
c906108c SS |
10856 | |
10857 | /* Get next abbreviation. | |
10858 | Under Irix6 the abbreviations for a compilation unit are not | |
c5aa993b JM |
10859 | always properly terminated with an abbrev number of 0. |
10860 | Exit loop if we encounter an abbreviation which we have | |
10861 | already read (which means we are about to read the abbreviations | |
10862 | for the next compile unit) or if the end of the abbreviation | |
10863 | table is reached. */ | |
dee91e82 DE |
10864 | if ((unsigned int) (abbrev_ptr - abbrev_section->buffer) |
10865 | >= abbrev_section->size) | |
c906108c SS |
10866 | break; |
10867 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
10868 | abbrev_ptr += bytes_read; | |
e7c27a73 | 10869 | if (dwarf2_lookup_abbrev (abbrev_number, cu) != NULL) |
c906108c SS |
10870 | break; |
10871 | } | |
f3dd6933 DJ |
10872 | |
10873 | xfree (cur_attrs); | |
c906108c SS |
10874 | } |
10875 | ||
f3dd6933 | 10876 | /* Release the memory used by the abbrev table for a compilation unit. */ |
c906108c | 10877 | |
c906108c | 10878 | static void |
f3dd6933 | 10879 | dwarf2_free_abbrev_table (void *ptr_to_cu) |
c906108c | 10880 | { |
f3dd6933 | 10881 | struct dwarf2_cu *cu = ptr_to_cu; |
c906108c | 10882 | |
f3dd6933 DJ |
10883 | obstack_free (&cu->abbrev_obstack, NULL); |
10884 | cu->dwarf2_abbrevs = NULL; | |
c906108c SS |
10885 | } |
10886 | ||
10887 | /* Lookup an abbrev_info structure in the abbrev hash table. */ | |
10888 | ||
10889 | static struct abbrev_info * | |
e7c27a73 | 10890 | dwarf2_lookup_abbrev (unsigned int number, struct dwarf2_cu *cu) |
c906108c SS |
10891 | { |
10892 | unsigned int hash_number; | |
10893 | struct abbrev_info *abbrev; | |
10894 | ||
10895 | hash_number = number % ABBREV_HASH_SIZE; | |
f3dd6933 | 10896 | abbrev = cu->dwarf2_abbrevs[hash_number]; |
c906108c SS |
10897 | |
10898 | while (abbrev) | |
10899 | { | |
10900 | if (abbrev->number == number) | |
10901 | return abbrev; | |
10902 | else | |
10903 | abbrev = abbrev->next; | |
10904 | } | |
10905 | return NULL; | |
10906 | } | |
10907 | ||
72bf9492 DJ |
10908 | /* Returns nonzero if TAG represents a type that we might generate a partial |
10909 | symbol for. */ | |
10910 | ||
10911 | static int | |
10912 | is_type_tag_for_partial (int tag) | |
10913 | { | |
10914 | switch (tag) | |
10915 | { | |
10916 | #if 0 | |
10917 | /* Some types that would be reasonable to generate partial symbols for, | |
10918 | that we don't at present. */ | |
10919 | case DW_TAG_array_type: | |
10920 | case DW_TAG_file_type: | |
10921 | case DW_TAG_ptr_to_member_type: | |
10922 | case DW_TAG_set_type: | |
10923 | case DW_TAG_string_type: | |
10924 | case DW_TAG_subroutine_type: | |
10925 | #endif | |
10926 | case DW_TAG_base_type: | |
10927 | case DW_TAG_class_type: | |
680b30c7 | 10928 | case DW_TAG_interface_type: |
72bf9492 DJ |
10929 | case DW_TAG_enumeration_type: |
10930 | case DW_TAG_structure_type: | |
10931 | case DW_TAG_subrange_type: | |
10932 | case DW_TAG_typedef: | |
10933 | case DW_TAG_union_type: | |
10934 | return 1; | |
10935 | default: | |
10936 | return 0; | |
10937 | } | |
10938 | } | |
10939 | ||
10940 | /* Load all DIEs that are interesting for partial symbols into memory. */ | |
10941 | ||
10942 | static struct partial_die_info * | |
dee91e82 DE |
10943 | load_partial_dies (const struct die_reader_specs *reader, |
10944 | gdb_byte *info_ptr, int building_psymtab) | |
72bf9492 | 10945 | { |
dee91e82 | 10946 | struct dwarf2_cu *cu = reader->cu; |
bb5ed363 | 10947 | struct objfile *objfile = cu->objfile; |
72bf9492 DJ |
10948 | struct partial_die_info *part_die; |
10949 | struct partial_die_info *parent_die, *last_die, *first_die = NULL; | |
10950 | struct abbrev_info *abbrev; | |
10951 | unsigned int bytes_read; | |
5afb4e99 | 10952 | unsigned int load_all = 0; |
72bf9492 DJ |
10953 | int nesting_level = 1; |
10954 | ||
10955 | parent_die = NULL; | |
10956 | last_die = NULL; | |
10957 | ||
7adf1e79 DE |
10958 | gdb_assert (cu->per_cu != NULL); |
10959 | if (cu->per_cu->load_all_dies) | |
5afb4e99 DJ |
10960 | load_all = 1; |
10961 | ||
72bf9492 DJ |
10962 | cu->partial_dies |
10963 | = htab_create_alloc_ex (cu->header.length / 12, | |
10964 | partial_die_hash, | |
10965 | partial_die_eq, | |
10966 | NULL, | |
10967 | &cu->comp_unit_obstack, | |
10968 | hashtab_obstack_allocate, | |
10969 | dummy_obstack_deallocate); | |
10970 | ||
10971 | part_die = obstack_alloc (&cu->comp_unit_obstack, | |
10972 | sizeof (struct partial_die_info)); | |
10973 | ||
10974 | while (1) | |
10975 | { | |
10976 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, cu); | |
10977 | ||
10978 | /* A NULL abbrev means the end of a series of children. */ | |
10979 | if (abbrev == NULL) | |
10980 | { | |
10981 | if (--nesting_level == 0) | |
10982 | { | |
10983 | /* PART_DIE was probably the last thing allocated on the | |
10984 | comp_unit_obstack, so we could call obstack_free | |
10985 | here. We don't do that because the waste is small, | |
10986 | and will be cleaned up when we're done with this | |
10987 | compilation unit. This way, we're also more robust | |
10988 | against other users of the comp_unit_obstack. */ | |
10989 | return first_die; | |
10990 | } | |
10991 | info_ptr += bytes_read; | |
10992 | last_die = parent_die; | |
10993 | parent_die = parent_die->die_parent; | |
10994 | continue; | |
10995 | } | |
10996 | ||
98bfdba5 PA |
10997 | /* Check for template arguments. We never save these; if |
10998 | they're seen, we just mark the parent, and go on our way. */ | |
10999 | if (parent_die != NULL | |
11000 | && cu->language == language_cplus | |
11001 | && (abbrev->tag == DW_TAG_template_type_param | |
11002 | || abbrev->tag == DW_TAG_template_value_param)) | |
11003 | { | |
11004 | parent_die->has_template_arguments = 1; | |
11005 | ||
11006 | if (!load_all) | |
11007 | { | |
11008 | /* We don't need a partial DIE for the template argument. */ | |
dee91e82 | 11009 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
11010 | continue; |
11011 | } | |
11012 | } | |
11013 | ||
0d99eb77 | 11014 | /* We only recurse into c++ subprograms looking for template arguments. |
98bfdba5 PA |
11015 | Skip their other children. */ |
11016 | if (!load_all | |
11017 | && cu->language == language_cplus | |
11018 | && parent_die != NULL | |
11019 | && parent_die->tag == DW_TAG_subprogram) | |
11020 | { | |
dee91e82 | 11021 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
11022 | continue; |
11023 | } | |
11024 | ||
5afb4e99 DJ |
11025 | /* Check whether this DIE is interesting enough to save. Normally |
11026 | we would not be interested in members here, but there may be | |
11027 | later variables referencing them via DW_AT_specification (for | |
11028 | static members). */ | |
11029 | if (!load_all | |
11030 | && !is_type_tag_for_partial (abbrev->tag) | |
72929c62 | 11031 | && abbrev->tag != DW_TAG_constant |
72bf9492 DJ |
11032 | && abbrev->tag != DW_TAG_enumerator |
11033 | && abbrev->tag != DW_TAG_subprogram | |
bc30ff58 | 11034 | && abbrev->tag != DW_TAG_lexical_block |
72bf9492 | 11035 | && abbrev->tag != DW_TAG_variable |
5afb4e99 | 11036 | && abbrev->tag != DW_TAG_namespace |
f55ee35c | 11037 | && abbrev->tag != DW_TAG_module |
95554aad TT |
11038 | && abbrev->tag != DW_TAG_member |
11039 | && abbrev->tag != DW_TAG_imported_unit) | |
72bf9492 DJ |
11040 | { |
11041 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 11042 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
72bf9492 DJ |
11043 | continue; |
11044 | } | |
11045 | ||
dee91e82 DE |
11046 | info_ptr = read_partial_die (reader, part_die, abbrev, bytes_read, |
11047 | info_ptr); | |
72bf9492 DJ |
11048 | |
11049 | /* This two-pass algorithm for processing partial symbols has a | |
11050 | high cost in cache pressure. Thus, handle some simple cases | |
11051 | here which cover the majority of C partial symbols. DIEs | |
11052 | which neither have specification tags in them, nor could have | |
11053 | specification tags elsewhere pointing at them, can simply be | |
11054 | processed and discarded. | |
11055 | ||
11056 | This segment is also optional; scan_partial_symbols and | |
11057 | add_partial_symbol will handle these DIEs if we chain | |
11058 | them in normally. When compilers which do not emit large | |
11059 | quantities of duplicate debug information are more common, | |
11060 | this code can probably be removed. */ | |
11061 | ||
11062 | /* Any complete simple types at the top level (pretty much all | |
11063 | of them, for a language without namespaces), can be processed | |
11064 | directly. */ | |
11065 | if (parent_die == NULL | |
11066 | && part_die->has_specification == 0 | |
11067 | && part_die->is_declaration == 0 | |
d8228535 | 11068 | && ((part_die->tag == DW_TAG_typedef && !part_die->has_children) |
72bf9492 DJ |
11069 | || part_die->tag == DW_TAG_base_type |
11070 | || part_die->tag == DW_TAG_subrange_type)) | |
11071 | { | |
11072 | if (building_psymtab && part_die->name != NULL) | |
04a679b8 | 11073 | add_psymbol_to_list (part_die->name, strlen (part_die->name), 0, |
72bf9492 | 11074 | VAR_DOMAIN, LOC_TYPEDEF, |
bb5ed363 DE |
11075 | &objfile->static_psymbols, |
11076 | 0, (CORE_ADDR) 0, cu->language, objfile); | |
dee91e82 | 11077 | info_ptr = locate_pdi_sibling (reader, part_die, info_ptr); |
72bf9492 DJ |
11078 | continue; |
11079 | } | |
11080 | ||
d8228535 JK |
11081 | /* The exception for DW_TAG_typedef with has_children above is |
11082 | a workaround of GCC PR debug/47510. In the case of this complaint | |
11083 | type_name_no_tag_or_error will error on such types later. | |
11084 | ||
11085 | GDB skipped children of DW_TAG_typedef by the shortcut above and then | |
11086 | it could not find the child DIEs referenced later, this is checked | |
11087 | above. In correct DWARF DW_TAG_typedef should have no children. */ | |
11088 | ||
11089 | if (part_die->tag == DW_TAG_typedef && part_die->has_children) | |
11090 | complaint (&symfile_complaints, | |
11091 | _("DW_TAG_typedef has childen - GCC PR debug/47510 bug " | |
11092 | "- DIE at 0x%x [in module %s]"), | |
b64f50a1 | 11093 | part_die->offset.sect_off, objfile->name); |
d8228535 | 11094 | |
72bf9492 DJ |
11095 | /* If we're at the second level, and we're an enumerator, and |
11096 | our parent has no specification (meaning possibly lives in a | |
11097 | namespace elsewhere), then we can add the partial symbol now | |
11098 | instead of queueing it. */ | |
11099 | if (part_die->tag == DW_TAG_enumerator | |
11100 | && parent_die != NULL | |
11101 | && parent_die->die_parent == NULL | |
11102 | && parent_die->tag == DW_TAG_enumeration_type | |
11103 | && parent_die->has_specification == 0) | |
11104 | { | |
11105 | if (part_die->name == NULL) | |
3e43a32a MS |
11106 | complaint (&symfile_complaints, |
11107 | _("malformed enumerator DIE ignored")); | |
72bf9492 | 11108 | else if (building_psymtab) |
04a679b8 | 11109 | add_psymbol_to_list (part_die->name, strlen (part_die->name), 0, |
72bf9492 | 11110 | VAR_DOMAIN, LOC_CONST, |
987504bb JJ |
11111 | (cu->language == language_cplus |
11112 | || cu->language == language_java) | |
bb5ed363 DE |
11113 | ? &objfile->global_psymbols |
11114 | : &objfile->static_psymbols, | |
11115 | 0, (CORE_ADDR) 0, cu->language, objfile); | |
72bf9492 | 11116 | |
dee91e82 | 11117 | info_ptr = locate_pdi_sibling (reader, part_die, info_ptr); |
72bf9492 DJ |
11118 | continue; |
11119 | } | |
11120 | ||
11121 | /* We'll save this DIE so link it in. */ | |
11122 | part_die->die_parent = parent_die; | |
11123 | part_die->die_sibling = NULL; | |
11124 | part_die->die_child = NULL; | |
11125 | ||
11126 | if (last_die && last_die == parent_die) | |
11127 | last_die->die_child = part_die; | |
11128 | else if (last_die) | |
11129 | last_die->die_sibling = part_die; | |
11130 | ||
11131 | last_die = part_die; | |
11132 | ||
11133 | if (first_die == NULL) | |
11134 | first_die = part_die; | |
11135 | ||
11136 | /* Maybe add the DIE to the hash table. Not all DIEs that we | |
11137 | find interesting need to be in the hash table, because we | |
11138 | also have the parent/sibling/child chains; only those that we | |
11139 | might refer to by offset later during partial symbol reading. | |
11140 | ||
11141 | For now this means things that might have be the target of a | |
11142 | DW_AT_specification, DW_AT_abstract_origin, or | |
11143 | DW_AT_extension. DW_AT_extension will refer only to | |
11144 | namespaces; DW_AT_abstract_origin refers to functions (and | |
11145 | many things under the function DIE, but we do not recurse | |
11146 | into function DIEs during partial symbol reading) and | |
11147 | possibly variables as well; DW_AT_specification refers to | |
11148 | declarations. Declarations ought to have the DW_AT_declaration | |
11149 | flag. It happens that GCC forgets to put it in sometimes, but | |
11150 | only for functions, not for types. | |
11151 | ||
11152 | Adding more things than necessary to the hash table is harmless | |
11153 | except for the performance cost. Adding too few will result in | |
5afb4e99 DJ |
11154 | wasted time in find_partial_die, when we reread the compilation |
11155 | unit with load_all_dies set. */ | |
72bf9492 | 11156 | |
5afb4e99 | 11157 | if (load_all |
72929c62 | 11158 | || abbrev->tag == DW_TAG_constant |
5afb4e99 | 11159 | || abbrev->tag == DW_TAG_subprogram |
72bf9492 DJ |
11160 | || abbrev->tag == DW_TAG_variable |
11161 | || abbrev->tag == DW_TAG_namespace | |
11162 | || part_die->is_declaration) | |
11163 | { | |
11164 | void **slot; | |
11165 | ||
11166 | slot = htab_find_slot_with_hash (cu->partial_dies, part_die, | |
b64f50a1 | 11167 | part_die->offset.sect_off, INSERT); |
72bf9492 DJ |
11168 | *slot = part_die; |
11169 | } | |
11170 | ||
11171 | part_die = obstack_alloc (&cu->comp_unit_obstack, | |
11172 | sizeof (struct partial_die_info)); | |
11173 | ||
11174 | /* For some DIEs we want to follow their children (if any). For C | |
bc30ff58 | 11175 | we have no reason to follow the children of structures; for other |
98bfdba5 PA |
11176 | languages we have to, so that we can get at method physnames |
11177 | to infer fully qualified class names, for DW_AT_specification, | |
11178 | and for C++ template arguments. For C++, we also look one level | |
11179 | inside functions to find template arguments (if the name of the | |
11180 | function does not already contain the template arguments). | |
bc30ff58 JB |
11181 | |
11182 | For Ada, we need to scan the children of subprograms and lexical | |
11183 | blocks as well because Ada allows the definition of nested | |
11184 | entities that could be interesting for the debugger, such as | |
11185 | nested subprograms for instance. */ | |
72bf9492 | 11186 | if (last_die->has_children |
5afb4e99 DJ |
11187 | && (load_all |
11188 | || last_die->tag == DW_TAG_namespace | |
f55ee35c | 11189 | || last_die->tag == DW_TAG_module |
72bf9492 | 11190 | || last_die->tag == DW_TAG_enumeration_type |
98bfdba5 PA |
11191 | || (cu->language == language_cplus |
11192 | && last_die->tag == DW_TAG_subprogram | |
11193 | && (last_die->name == NULL | |
11194 | || strchr (last_die->name, '<') == NULL)) | |
72bf9492 DJ |
11195 | || (cu->language != language_c |
11196 | && (last_die->tag == DW_TAG_class_type | |
680b30c7 | 11197 | || last_die->tag == DW_TAG_interface_type |
72bf9492 | 11198 | || last_die->tag == DW_TAG_structure_type |
bc30ff58 JB |
11199 | || last_die->tag == DW_TAG_union_type)) |
11200 | || (cu->language == language_ada | |
11201 | && (last_die->tag == DW_TAG_subprogram | |
11202 | || last_die->tag == DW_TAG_lexical_block)))) | |
72bf9492 DJ |
11203 | { |
11204 | nesting_level++; | |
11205 | parent_die = last_die; | |
11206 | continue; | |
11207 | } | |
11208 | ||
11209 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 11210 | info_ptr = locate_pdi_sibling (reader, last_die, info_ptr); |
72bf9492 DJ |
11211 | |
11212 | /* Back to the top, do it again. */ | |
11213 | } | |
11214 | } | |
11215 | ||
c906108c SS |
11216 | /* Read a minimal amount of information into the minimal die structure. */ |
11217 | ||
fe1b8b76 | 11218 | static gdb_byte * |
dee91e82 DE |
11219 | read_partial_die (const struct die_reader_specs *reader, |
11220 | struct partial_die_info *part_die, | |
11221 | struct abbrev_info *abbrev, unsigned int abbrev_len, | |
11222 | gdb_byte *info_ptr) | |
c906108c | 11223 | { |
dee91e82 | 11224 | struct dwarf2_cu *cu = reader->cu; |
bb5ed363 | 11225 | struct objfile *objfile = cu->objfile; |
dee91e82 | 11226 | gdb_byte *buffer = reader->buffer; |
fa238c03 | 11227 | unsigned int i; |
c906108c | 11228 | struct attribute attr; |
c5aa993b | 11229 | int has_low_pc_attr = 0; |
c906108c | 11230 | int has_high_pc_attr = 0; |
91da1414 | 11231 | int high_pc_relative = 0; |
c906108c | 11232 | |
72bf9492 | 11233 | memset (part_die, 0, sizeof (struct partial_die_info)); |
c906108c | 11234 | |
b64f50a1 | 11235 | part_die->offset.sect_off = info_ptr - buffer; |
72bf9492 DJ |
11236 | |
11237 | info_ptr += abbrev_len; | |
11238 | ||
11239 | if (abbrev == NULL) | |
11240 | return info_ptr; | |
11241 | ||
c906108c SS |
11242 | part_die->tag = abbrev->tag; |
11243 | part_die->has_children = abbrev->has_children; | |
c906108c SS |
11244 | |
11245 | for (i = 0; i < abbrev->num_attrs; ++i) | |
11246 | { | |
dee91e82 | 11247 | info_ptr = read_attribute (reader, &attr, &abbrev->attrs[i], info_ptr); |
c906108c SS |
11248 | |
11249 | /* Store the data if it is of an attribute we want to keep in a | |
c5aa993b | 11250 | partial symbol table. */ |
c906108c SS |
11251 | switch (attr.name) |
11252 | { | |
11253 | case DW_AT_name: | |
71c25dea TT |
11254 | switch (part_die->tag) |
11255 | { | |
11256 | case DW_TAG_compile_unit: | |
95554aad | 11257 | case DW_TAG_partial_unit: |
348e048f | 11258 | case DW_TAG_type_unit: |
71c25dea TT |
11259 | /* Compilation units have a DW_AT_name that is a filename, not |
11260 | a source language identifier. */ | |
11261 | case DW_TAG_enumeration_type: | |
11262 | case DW_TAG_enumerator: | |
11263 | /* These tags always have simple identifiers already; no need | |
11264 | to canonicalize them. */ | |
11265 | part_die->name = DW_STRING (&attr); | |
11266 | break; | |
11267 | default: | |
11268 | part_die->name | |
11269 | = dwarf2_canonicalize_name (DW_STRING (&attr), cu, | |
bb5ed363 | 11270 | &objfile->objfile_obstack); |
71c25dea TT |
11271 | break; |
11272 | } | |
c906108c | 11273 | break; |
31ef98ae | 11274 | case DW_AT_linkage_name: |
c906108c | 11275 | case DW_AT_MIPS_linkage_name: |
31ef98ae TT |
11276 | /* Note that both forms of linkage name might appear. We |
11277 | assume they will be the same, and we only store the last | |
11278 | one we see. */ | |
94af9270 KS |
11279 | if (cu->language == language_ada) |
11280 | part_die->name = DW_STRING (&attr); | |
abc72ce4 | 11281 | part_die->linkage_name = DW_STRING (&attr); |
c906108c SS |
11282 | break; |
11283 | case DW_AT_low_pc: | |
11284 | has_low_pc_attr = 1; | |
11285 | part_die->lowpc = DW_ADDR (&attr); | |
11286 | break; | |
11287 | case DW_AT_high_pc: | |
11288 | has_high_pc_attr = 1; | |
3019eac3 DE |
11289 | if (attr.form == DW_FORM_addr |
11290 | || attr.form == DW_FORM_GNU_addr_index) | |
91da1414 MW |
11291 | part_die->highpc = DW_ADDR (&attr); |
11292 | else | |
11293 | { | |
11294 | high_pc_relative = 1; | |
11295 | part_die->highpc = DW_UNSND (&attr); | |
11296 | } | |
c906108c SS |
11297 | break; |
11298 | case DW_AT_location: | |
0963b4bd | 11299 | /* Support the .debug_loc offsets. */ |
8e19ed76 PS |
11300 | if (attr_form_is_block (&attr)) |
11301 | { | |
95554aad | 11302 | part_die->d.locdesc = DW_BLOCK (&attr); |
8e19ed76 | 11303 | } |
3690dd37 | 11304 | else if (attr_form_is_section_offset (&attr)) |
8e19ed76 | 11305 | { |
4d3c2250 | 11306 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
11307 | } |
11308 | else | |
11309 | { | |
4d3c2250 KB |
11310 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
11311 | "partial symbol information"); | |
8e19ed76 | 11312 | } |
c906108c | 11313 | break; |
c906108c SS |
11314 | case DW_AT_external: |
11315 | part_die->is_external = DW_UNSND (&attr); | |
11316 | break; | |
11317 | case DW_AT_declaration: | |
11318 | part_die->is_declaration = DW_UNSND (&attr); | |
11319 | break; | |
11320 | case DW_AT_type: | |
11321 | part_die->has_type = 1; | |
11322 | break; | |
11323 | case DW_AT_abstract_origin: | |
11324 | case DW_AT_specification: | |
72bf9492 DJ |
11325 | case DW_AT_extension: |
11326 | part_die->has_specification = 1; | |
c764a876 | 11327 | part_die->spec_offset = dwarf2_get_ref_die_offset (&attr); |
c906108c SS |
11328 | break; |
11329 | case DW_AT_sibling: | |
11330 | /* Ignore absolute siblings, they might point outside of | |
11331 | the current compile unit. */ | |
11332 | if (attr.form == DW_FORM_ref_addr) | |
3e43a32a MS |
11333 | complaint (&symfile_complaints, |
11334 | _("ignoring absolute DW_AT_sibling")); | |
c906108c | 11335 | else |
b64f50a1 | 11336 | part_die->sibling = buffer + dwarf2_get_ref_die_offset (&attr).sect_off; |
c906108c | 11337 | break; |
fa4028e9 JB |
11338 | case DW_AT_byte_size: |
11339 | part_die->has_byte_size = 1; | |
11340 | break; | |
68511cec CES |
11341 | case DW_AT_calling_convention: |
11342 | /* DWARF doesn't provide a way to identify a program's source-level | |
11343 | entry point. DW_AT_calling_convention attributes are only meant | |
11344 | to describe functions' calling conventions. | |
11345 | ||
11346 | However, because it's a necessary piece of information in | |
11347 | Fortran, and because DW_CC_program is the only piece of debugging | |
11348 | information whose definition refers to a 'main program' at all, | |
11349 | several compilers have begun marking Fortran main programs with | |
11350 | DW_CC_program --- even when those functions use the standard | |
11351 | calling conventions. | |
11352 | ||
11353 | So until DWARF specifies a way to provide this information and | |
11354 | compilers pick up the new representation, we'll support this | |
11355 | practice. */ | |
11356 | if (DW_UNSND (&attr) == DW_CC_program | |
11357 | && cu->language == language_fortran) | |
01f8c46d JK |
11358 | { |
11359 | set_main_name (part_die->name); | |
11360 | ||
11361 | /* As this DIE has a static linkage the name would be difficult | |
11362 | to look up later. */ | |
11363 | language_of_main = language_fortran; | |
11364 | } | |
68511cec | 11365 | break; |
481860b3 GB |
11366 | case DW_AT_inline: |
11367 | if (DW_UNSND (&attr) == DW_INL_inlined | |
11368 | || DW_UNSND (&attr) == DW_INL_declared_inlined) | |
11369 | part_die->may_be_inlined = 1; | |
11370 | break; | |
95554aad TT |
11371 | |
11372 | case DW_AT_import: | |
11373 | if (part_die->tag == DW_TAG_imported_unit) | |
11374 | part_die->d.offset = dwarf2_get_ref_die_offset (&attr); | |
11375 | break; | |
11376 | ||
c906108c SS |
11377 | default: |
11378 | break; | |
11379 | } | |
11380 | } | |
11381 | ||
91da1414 MW |
11382 | if (high_pc_relative) |
11383 | part_die->highpc += part_die->lowpc; | |
11384 | ||
9373cf26 JK |
11385 | if (has_low_pc_attr && has_high_pc_attr) |
11386 | { | |
11387 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
11388 | eliminate duplicate copies of functions and vtables and such. | |
11389 | The linker will arbitrarily choose one and discard the others. | |
11390 | The AT_*_pc values for such functions refer to local labels in | |
11391 | these sections. If the section from that file was discarded, the | |
11392 | labels are not in the output, so the relocs get a value of 0. | |
11393 | If this is a discarded function, mark the pc bounds as invalid, | |
11394 | so that GDB will ignore it. */ | |
11395 | if (part_die->lowpc == 0 && !dwarf2_per_objfile->has_section_at_zero) | |
11396 | { | |
bb5ed363 | 11397 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9373cf26 JK |
11398 | |
11399 | complaint (&symfile_complaints, | |
11400 | _("DW_AT_low_pc %s is zero " | |
11401 | "for DIE at 0x%x [in module %s]"), | |
11402 | paddress (gdbarch, part_die->lowpc), | |
b64f50a1 | 11403 | part_die->offset.sect_off, objfile->name); |
9373cf26 JK |
11404 | } |
11405 | /* dwarf2_get_pc_bounds has also the strict low < high requirement. */ | |
11406 | else if (part_die->lowpc >= part_die->highpc) | |
11407 | { | |
bb5ed363 | 11408 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9373cf26 JK |
11409 | |
11410 | complaint (&symfile_complaints, | |
11411 | _("DW_AT_low_pc %s is not < DW_AT_high_pc %s " | |
11412 | "for DIE at 0x%x [in module %s]"), | |
11413 | paddress (gdbarch, part_die->lowpc), | |
11414 | paddress (gdbarch, part_die->highpc), | |
b64f50a1 | 11415 | part_die->offset.sect_off, objfile->name); |
9373cf26 JK |
11416 | } |
11417 | else | |
11418 | part_die->has_pc_info = 1; | |
11419 | } | |
85cbf3d3 | 11420 | |
c906108c SS |
11421 | return info_ptr; |
11422 | } | |
11423 | ||
72bf9492 DJ |
11424 | /* Find a cached partial DIE at OFFSET in CU. */ |
11425 | ||
11426 | static struct partial_die_info * | |
b64f50a1 | 11427 | find_partial_die_in_comp_unit (sect_offset offset, struct dwarf2_cu *cu) |
72bf9492 DJ |
11428 | { |
11429 | struct partial_die_info *lookup_die = NULL; | |
11430 | struct partial_die_info part_die; | |
11431 | ||
11432 | part_die.offset = offset; | |
b64f50a1 JK |
11433 | lookup_die = htab_find_with_hash (cu->partial_dies, &part_die, |
11434 | offset.sect_off); | |
72bf9492 | 11435 | |
72bf9492 DJ |
11436 | return lookup_die; |
11437 | } | |
11438 | ||
348e048f DE |
11439 | /* Find a partial DIE at OFFSET, which may or may not be in CU, |
11440 | except in the case of .debug_types DIEs which do not reference | |
11441 | outside their CU (they do however referencing other types via | |
55f1336d | 11442 | DW_FORM_ref_sig8). */ |
72bf9492 DJ |
11443 | |
11444 | static struct partial_die_info * | |
b64f50a1 | 11445 | find_partial_die (sect_offset offset, struct dwarf2_cu *cu) |
72bf9492 | 11446 | { |
bb5ed363 | 11447 | struct objfile *objfile = cu->objfile; |
5afb4e99 DJ |
11448 | struct dwarf2_per_cu_data *per_cu = NULL; |
11449 | struct partial_die_info *pd = NULL; | |
72bf9492 | 11450 | |
45452591 | 11451 | if (offset_in_cu_p (&cu->header, offset)) |
5afb4e99 DJ |
11452 | { |
11453 | pd = find_partial_die_in_comp_unit (offset, cu); | |
11454 | if (pd != NULL) | |
11455 | return pd; | |
0d99eb77 DE |
11456 | /* We missed recording what we needed. |
11457 | Load all dies and try again. */ | |
11458 | per_cu = cu->per_cu; | |
5afb4e99 | 11459 | } |
0d99eb77 DE |
11460 | else |
11461 | { | |
11462 | /* TUs don't reference other CUs/TUs (except via type signatures). */ | |
3019eac3 | 11463 | if (cu->per_cu->is_debug_types) |
0d99eb77 DE |
11464 | { |
11465 | error (_("Dwarf Error: Type Unit at offset 0x%lx contains" | |
11466 | " external reference to offset 0x%lx [in module %s].\n"), | |
11467 | (long) cu->header.offset.sect_off, (long) offset.sect_off, | |
11468 | bfd_get_filename (objfile->obfd)); | |
11469 | } | |
11470 | per_cu = dwarf2_find_containing_comp_unit (offset, objfile); | |
72bf9492 | 11471 | |
0d99eb77 DE |
11472 | if (per_cu->cu == NULL || per_cu->cu->partial_dies == NULL) |
11473 | load_partial_comp_unit (per_cu); | |
ae038cb0 | 11474 | |
0d99eb77 DE |
11475 | per_cu->cu->last_used = 0; |
11476 | pd = find_partial_die_in_comp_unit (offset, per_cu->cu); | |
11477 | } | |
5afb4e99 | 11478 | |
dee91e82 DE |
11479 | /* If we didn't find it, and not all dies have been loaded, |
11480 | load them all and try again. */ | |
11481 | ||
5afb4e99 DJ |
11482 | if (pd == NULL && per_cu->load_all_dies == 0) |
11483 | { | |
5afb4e99 | 11484 | per_cu->load_all_dies = 1; |
fd820528 DE |
11485 | |
11486 | /* This is nasty. When we reread the DIEs, somewhere up the call chain | |
11487 | THIS_CU->cu may already be in use. So we can't just free it and | |
11488 | replace its DIEs with the ones we read in. Instead, we leave those | |
11489 | DIEs alone (which can still be in use, e.g. in scan_partial_symbols), | |
11490 | and clobber THIS_CU->cu->partial_dies with the hash table for the new | |
11491 | set. */ | |
dee91e82 | 11492 | load_partial_comp_unit (per_cu); |
5afb4e99 DJ |
11493 | |
11494 | pd = find_partial_die_in_comp_unit (offset, per_cu->cu); | |
11495 | } | |
11496 | ||
11497 | if (pd == NULL) | |
11498 | internal_error (__FILE__, __LINE__, | |
3e43a32a MS |
11499 | _("could not find partial DIE 0x%x " |
11500 | "in cache [from module %s]\n"), | |
b64f50a1 | 11501 | offset.sect_off, bfd_get_filename (objfile->obfd)); |
5afb4e99 | 11502 | return pd; |
72bf9492 DJ |
11503 | } |
11504 | ||
abc72ce4 DE |
11505 | /* See if we can figure out if the class lives in a namespace. We do |
11506 | this by looking for a member function; its demangled name will | |
11507 | contain namespace info, if there is any. */ | |
11508 | ||
11509 | static void | |
11510 | guess_partial_die_structure_name (struct partial_die_info *struct_pdi, | |
11511 | struct dwarf2_cu *cu) | |
11512 | { | |
11513 | /* NOTE: carlton/2003-10-07: Getting the info this way changes | |
11514 | what template types look like, because the demangler | |
11515 | frequently doesn't give the same name as the debug info. We | |
11516 | could fix this by only using the demangled name to get the | |
11517 | prefix (but see comment in read_structure_type). */ | |
11518 | ||
11519 | struct partial_die_info *real_pdi; | |
11520 | struct partial_die_info *child_pdi; | |
11521 | ||
11522 | /* If this DIE (this DIE's specification, if any) has a parent, then | |
11523 | we should not do this. We'll prepend the parent's fully qualified | |
11524 | name when we create the partial symbol. */ | |
11525 | ||
11526 | real_pdi = struct_pdi; | |
11527 | while (real_pdi->has_specification) | |
11528 | real_pdi = find_partial_die (real_pdi->spec_offset, cu); | |
11529 | ||
11530 | if (real_pdi->die_parent != NULL) | |
11531 | return; | |
11532 | ||
11533 | for (child_pdi = struct_pdi->die_child; | |
11534 | child_pdi != NULL; | |
11535 | child_pdi = child_pdi->die_sibling) | |
11536 | { | |
11537 | if (child_pdi->tag == DW_TAG_subprogram | |
11538 | && child_pdi->linkage_name != NULL) | |
11539 | { | |
11540 | char *actual_class_name | |
11541 | = language_class_name_from_physname (cu->language_defn, | |
11542 | child_pdi->linkage_name); | |
11543 | if (actual_class_name != NULL) | |
11544 | { | |
11545 | struct_pdi->name | |
11546 | = obsavestring (actual_class_name, | |
11547 | strlen (actual_class_name), | |
11548 | &cu->objfile->objfile_obstack); | |
11549 | xfree (actual_class_name); | |
11550 | } | |
11551 | break; | |
11552 | } | |
11553 | } | |
11554 | } | |
11555 | ||
72bf9492 DJ |
11556 | /* Adjust PART_DIE before generating a symbol for it. This function |
11557 | may set the is_external flag or change the DIE's name. */ | |
11558 | ||
11559 | static void | |
11560 | fixup_partial_die (struct partial_die_info *part_die, | |
11561 | struct dwarf2_cu *cu) | |
11562 | { | |
abc72ce4 DE |
11563 | /* Once we've fixed up a die, there's no point in doing so again. |
11564 | This also avoids a memory leak if we were to call | |
11565 | guess_partial_die_structure_name multiple times. */ | |
11566 | if (part_die->fixup_called) | |
11567 | return; | |
11568 | ||
72bf9492 DJ |
11569 | /* If we found a reference attribute and the DIE has no name, try |
11570 | to find a name in the referred to DIE. */ | |
11571 | ||
11572 | if (part_die->name == NULL && part_die->has_specification) | |
11573 | { | |
11574 | struct partial_die_info *spec_die; | |
72bf9492 | 11575 | |
10b3939b | 11576 | spec_die = find_partial_die (part_die->spec_offset, cu); |
72bf9492 | 11577 | |
10b3939b | 11578 | fixup_partial_die (spec_die, cu); |
72bf9492 DJ |
11579 | |
11580 | if (spec_die->name) | |
11581 | { | |
11582 | part_die->name = spec_die->name; | |
11583 | ||
11584 | /* Copy DW_AT_external attribute if it is set. */ | |
11585 | if (spec_die->is_external) | |
11586 | part_die->is_external = spec_die->is_external; | |
11587 | } | |
11588 | } | |
11589 | ||
11590 | /* Set default names for some unnamed DIEs. */ | |
72bf9492 DJ |
11591 | |
11592 | if (part_die->name == NULL && part_die->tag == DW_TAG_namespace) | |
2b1dbab0 | 11593 | part_die->name = CP_ANONYMOUS_NAMESPACE_STR; |
72bf9492 | 11594 | |
abc72ce4 DE |
11595 | /* If there is no parent die to provide a namespace, and there are |
11596 | children, see if we can determine the namespace from their linkage | |
122d1940 | 11597 | name. */ |
abc72ce4 | 11598 | if (cu->language == language_cplus |
8b70b953 | 11599 | && !VEC_empty (dwarf2_section_info_def, dwarf2_per_objfile->types) |
abc72ce4 DE |
11600 | && part_die->die_parent == NULL |
11601 | && part_die->has_children | |
11602 | && (part_die->tag == DW_TAG_class_type | |
11603 | || part_die->tag == DW_TAG_structure_type | |
11604 | || part_die->tag == DW_TAG_union_type)) | |
11605 | guess_partial_die_structure_name (part_die, cu); | |
11606 | ||
53832f31 TT |
11607 | /* GCC might emit a nameless struct or union that has a linkage |
11608 | name. See http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
11609 | if (part_die->name == NULL | |
96408a79 SA |
11610 | && (part_die->tag == DW_TAG_class_type |
11611 | || part_die->tag == DW_TAG_interface_type | |
11612 | || part_die->tag == DW_TAG_structure_type | |
11613 | || part_die->tag == DW_TAG_union_type) | |
53832f31 TT |
11614 | && part_die->linkage_name != NULL) |
11615 | { | |
11616 | char *demangled; | |
11617 | ||
11618 | demangled = cplus_demangle (part_die->linkage_name, DMGL_TYPES); | |
11619 | if (demangled) | |
11620 | { | |
96408a79 SA |
11621 | const char *base; |
11622 | ||
11623 | /* Strip any leading namespaces/classes, keep only the base name. | |
11624 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
11625 | base = strrchr (demangled, ':'); | |
11626 | if (base && base > demangled && base[-1] == ':') | |
11627 | base++; | |
11628 | else | |
11629 | base = demangled; | |
11630 | ||
11631 | part_die->name = obsavestring (base, strlen (base), | |
53832f31 TT |
11632 | &cu->objfile->objfile_obstack); |
11633 | xfree (demangled); | |
11634 | } | |
11635 | } | |
11636 | ||
abc72ce4 | 11637 | part_die->fixup_called = 1; |
72bf9492 DJ |
11638 | } |
11639 | ||
a8329558 | 11640 | /* Read an attribute value described by an attribute form. */ |
c906108c | 11641 | |
fe1b8b76 | 11642 | static gdb_byte * |
dee91e82 DE |
11643 | read_attribute_value (const struct die_reader_specs *reader, |
11644 | struct attribute *attr, unsigned form, | |
11645 | gdb_byte *info_ptr) | |
c906108c | 11646 | { |
dee91e82 DE |
11647 | struct dwarf2_cu *cu = reader->cu; |
11648 | bfd *abfd = reader->abfd; | |
e7c27a73 | 11649 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
11650 | unsigned int bytes_read; |
11651 | struct dwarf_block *blk; | |
11652 | ||
a8329558 KW |
11653 | attr->form = form; |
11654 | switch (form) | |
c906108c | 11655 | { |
c906108c | 11656 | case DW_FORM_ref_addr: |
ae411497 | 11657 | if (cu->header.version == 2) |
4568ecf9 | 11658 | DW_UNSND (attr) = read_address (abfd, info_ptr, cu, &bytes_read); |
ae411497 | 11659 | else |
4568ecf9 DE |
11660 | DW_UNSND (attr) = read_offset (abfd, info_ptr, |
11661 | &cu->header, &bytes_read); | |
ae411497 TT |
11662 | info_ptr += bytes_read; |
11663 | break; | |
11664 | case DW_FORM_addr: | |
e7c27a73 | 11665 | DW_ADDR (attr) = read_address (abfd, info_ptr, cu, &bytes_read); |
107d2387 | 11666 | info_ptr += bytes_read; |
c906108c SS |
11667 | break; |
11668 | case DW_FORM_block2: | |
7b5a2f43 | 11669 | blk = dwarf_alloc_block (cu); |
c906108c SS |
11670 | blk->size = read_2_bytes (abfd, info_ptr); |
11671 | info_ptr += 2; | |
11672 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
11673 | info_ptr += blk->size; | |
11674 | DW_BLOCK (attr) = blk; | |
11675 | break; | |
11676 | case DW_FORM_block4: | |
7b5a2f43 | 11677 | blk = dwarf_alloc_block (cu); |
c906108c SS |
11678 | blk->size = read_4_bytes (abfd, info_ptr); |
11679 | info_ptr += 4; | |
11680 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
11681 | info_ptr += blk->size; | |
11682 | DW_BLOCK (attr) = blk; | |
11683 | break; | |
11684 | case DW_FORM_data2: | |
11685 | DW_UNSND (attr) = read_2_bytes (abfd, info_ptr); | |
11686 | info_ptr += 2; | |
11687 | break; | |
11688 | case DW_FORM_data4: | |
11689 | DW_UNSND (attr) = read_4_bytes (abfd, info_ptr); | |
11690 | info_ptr += 4; | |
11691 | break; | |
11692 | case DW_FORM_data8: | |
11693 | DW_UNSND (attr) = read_8_bytes (abfd, info_ptr); | |
11694 | info_ptr += 8; | |
11695 | break; | |
2dc7f7b3 TT |
11696 | case DW_FORM_sec_offset: |
11697 | DW_UNSND (attr) = read_offset (abfd, info_ptr, &cu->header, &bytes_read); | |
11698 | info_ptr += bytes_read; | |
11699 | break; | |
c906108c | 11700 | case DW_FORM_string: |
9b1c24c8 | 11701 | DW_STRING (attr) = read_direct_string (abfd, info_ptr, &bytes_read); |
8285870a | 11702 | DW_STRING_IS_CANONICAL (attr) = 0; |
c906108c SS |
11703 | info_ptr += bytes_read; |
11704 | break; | |
4bdf3d34 JJ |
11705 | case DW_FORM_strp: |
11706 | DW_STRING (attr) = read_indirect_string (abfd, info_ptr, cu_header, | |
11707 | &bytes_read); | |
8285870a | 11708 | DW_STRING_IS_CANONICAL (attr) = 0; |
4bdf3d34 JJ |
11709 | info_ptr += bytes_read; |
11710 | break; | |
2dc7f7b3 | 11711 | case DW_FORM_exprloc: |
c906108c | 11712 | case DW_FORM_block: |
7b5a2f43 | 11713 | blk = dwarf_alloc_block (cu); |
c906108c SS |
11714 | blk->size = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
11715 | info_ptr += bytes_read; | |
11716 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
11717 | info_ptr += blk->size; | |
11718 | DW_BLOCK (attr) = blk; | |
11719 | break; | |
11720 | case DW_FORM_block1: | |
7b5a2f43 | 11721 | blk = dwarf_alloc_block (cu); |
c906108c SS |
11722 | blk->size = read_1_byte (abfd, info_ptr); |
11723 | info_ptr += 1; | |
11724 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
11725 | info_ptr += blk->size; | |
11726 | DW_BLOCK (attr) = blk; | |
11727 | break; | |
11728 | case DW_FORM_data1: | |
11729 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
11730 | info_ptr += 1; | |
11731 | break; | |
11732 | case DW_FORM_flag: | |
11733 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
11734 | info_ptr += 1; | |
11735 | break; | |
2dc7f7b3 TT |
11736 | case DW_FORM_flag_present: |
11737 | DW_UNSND (attr) = 1; | |
11738 | break; | |
c906108c SS |
11739 | case DW_FORM_sdata: |
11740 | DW_SND (attr) = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
11741 | info_ptr += bytes_read; | |
11742 | break; | |
11743 | case DW_FORM_udata: | |
11744 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
11745 | info_ptr += bytes_read; | |
11746 | break; | |
11747 | case DW_FORM_ref1: | |
4568ecf9 DE |
11748 | DW_UNSND (attr) = (cu->header.offset.sect_off |
11749 | + read_1_byte (abfd, info_ptr)); | |
c906108c SS |
11750 | info_ptr += 1; |
11751 | break; | |
11752 | case DW_FORM_ref2: | |
4568ecf9 DE |
11753 | DW_UNSND (attr) = (cu->header.offset.sect_off |
11754 | + read_2_bytes (abfd, info_ptr)); | |
c906108c SS |
11755 | info_ptr += 2; |
11756 | break; | |
11757 | case DW_FORM_ref4: | |
4568ecf9 DE |
11758 | DW_UNSND (attr) = (cu->header.offset.sect_off |
11759 | + read_4_bytes (abfd, info_ptr)); | |
c906108c SS |
11760 | info_ptr += 4; |
11761 | break; | |
613e1657 | 11762 | case DW_FORM_ref8: |
4568ecf9 DE |
11763 | DW_UNSND (attr) = (cu->header.offset.sect_off |
11764 | + read_8_bytes (abfd, info_ptr)); | |
613e1657 KB |
11765 | info_ptr += 8; |
11766 | break; | |
55f1336d | 11767 | case DW_FORM_ref_sig8: |
348e048f DE |
11768 | /* Convert the signature to something we can record in DW_UNSND |
11769 | for later lookup. | |
11770 | NOTE: This is NULL if the type wasn't found. */ | |
11771 | DW_SIGNATURED_TYPE (attr) = | |
e319fa28 | 11772 | lookup_signatured_type (read_8_bytes (abfd, info_ptr)); |
348e048f DE |
11773 | info_ptr += 8; |
11774 | break; | |
c906108c | 11775 | case DW_FORM_ref_udata: |
4568ecf9 DE |
11776 | DW_UNSND (attr) = (cu->header.offset.sect_off |
11777 | + read_unsigned_leb128 (abfd, info_ptr, &bytes_read)); | |
c906108c SS |
11778 | info_ptr += bytes_read; |
11779 | break; | |
c906108c | 11780 | case DW_FORM_indirect: |
a8329558 KW |
11781 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
11782 | info_ptr += bytes_read; | |
dee91e82 | 11783 | info_ptr = read_attribute_value (reader, attr, form, info_ptr); |
a8329558 | 11784 | break; |
3019eac3 DE |
11785 | case DW_FORM_GNU_addr_index: |
11786 | if (reader->dwo_file == NULL) | |
11787 | { | |
11788 | /* For now flag a hard error. | |
11789 | Later we can turn this into a complaint. */ | |
11790 | error (_("Dwarf Error: %s found in non-DWO CU [in module %s]"), | |
11791 | dwarf_form_name (form), | |
11792 | bfd_get_filename (abfd)); | |
11793 | } | |
11794 | DW_ADDR (attr) = read_addr_index_from_leb128 (cu, info_ptr, &bytes_read); | |
11795 | info_ptr += bytes_read; | |
11796 | break; | |
11797 | case DW_FORM_GNU_str_index: | |
11798 | if (reader->dwo_file == NULL) | |
11799 | { | |
11800 | /* For now flag a hard error. | |
11801 | Later we can turn this into a complaint if warranted. */ | |
11802 | error (_("Dwarf Error: %s found in non-DWO CU [in module %s]"), | |
11803 | dwarf_form_name (form), | |
11804 | bfd_get_filename (abfd)); | |
11805 | } | |
11806 | { | |
11807 | ULONGEST str_index = | |
11808 | read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
11809 | ||
11810 | DW_STRING (attr) = read_str_index (reader, cu, str_index); | |
11811 | DW_STRING_IS_CANONICAL (attr) = 0; | |
11812 | info_ptr += bytes_read; | |
11813 | } | |
11814 | break; | |
c906108c | 11815 | default: |
8a3fe4f8 | 11816 | error (_("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]"), |
659b0389 ML |
11817 | dwarf_form_name (form), |
11818 | bfd_get_filename (abfd)); | |
c906108c | 11819 | } |
28e94949 JB |
11820 | |
11821 | /* We have seen instances where the compiler tried to emit a byte | |
11822 | size attribute of -1 which ended up being encoded as an unsigned | |
11823 | 0xffffffff. Although 0xffffffff is technically a valid size value, | |
11824 | an object of this size seems pretty unlikely so we can relatively | |
11825 | safely treat these cases as if the size attribute was invalid and | |
11826 | treat them as zero by default. */ | |
11827 | if (attr->name == DW_AT_byte_size | |
11828 | && form == DW_FORM_data4 | |
11829 | && DW_UNSND (attr) >= 0xffffffff) | |
01c66ae6 JB |
11830 | { |
11831 | complaint | |
11832 | (&symfile_complaints, | |
43bbcdc2 PH |
11833 | _("Suspicious DW_AT_byte_size value treated as zero instead of %s"), |
11834 | hex_string (DW_UNSND (attr))); | |
01c66ae6 JB |
11835 | DW_UNSND (attr) = 0; |
11836 | } | |
28e94949 | 11837 | |
c906108c SS |
11838 | return info_ptr; |
11839 | } | |
11840 | ||
a8329558 KW |
11841 | /* Read an attribute described by an abbreviated attribute. */ |
11842 | ||
fe1b8b76 | 11843 | static gdb_byte * |
dee91e82 DE |
11844 | read_attribute (const struct die_reader_specs *reader, |
11845 | struct attribute *attr, struct attr_abbrev *abbrev, | |
11846 | gdb_byte *info_ptr) | |
a8329558 KW |
11847 | { |
11848 | attr->name = abbrev->name; | |
dee91e82 | 11849 | return read_attribute_value (reader, attr, abbrev->form, info_ptr); |
a8329558 KW |
11850 | } |
11851 | ||
0963b4bd | 11852 | /* Read dwarf information from a buffer. */ |
c906108c SS |
11853 | |
11854 | static unsigned int | |
fe1b8b76 | 11855 | read_1_byte (bfd *abfd, gdb_byte *buf) |
c906108c | 11856 | { |
fe1b8b76 | 11857 | return bfd_get_8 (abfd, buf); |
c906108c SS |
11858 | } |
11859 | ||
11860 | static int | |
fe1b8b76 | 11861 | read_1_signed_byte (bfd *abfd, gdb_byte *buf) |
c906108c | 11862 | { |
fe1b8b76 | 11863 | return bfd_get_signed_8 (abfd, buf); |
c906108c SS |
11864 | } |
11865 | ||
11866 | static unsigned int | |
fe1b8b76 | 11867 | read_2_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 11868 | { |
fe1b8b76 | 11869 | return bfd_get_16 (abfd, buf); |
c906108c SS |
11870 | } |
11871 | ||
21ae7a4d JK |
11872 | static int |
11873 | read_2_signed_bytes (bfd *abfd, gdb_byte *buf) | |
11874 | { | |
11875 | return bfd_get_signed_16 (abfd, buf); | |
11876 | } | |
11877 | ||
c906108c | 11878 | static unsigned int |
fe1b8b76 | 11879 | read_4_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 11880 | { |
fe1b8b76 | 11881 | return bfd_get_32 (abfd, buf); |
c906108c SS |
11882 | } |
11883 | ||
21ae7a4d JK |
11884 | static int |
11885 | read_4_signed_bytes (bfd *abfd, gdb_byte *buf) | |
11886 | { | |
11887 | return bfd_get_signed_32 (abfd, buf); | |
11888 | } | |
11889 | ||
93311388 | 11890 | static ULONGEST |
fe1b8b76 | 11891 | read_8_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 11892 | { |
fe1b8b76 | 11893 | return bfd_get_64 (abfd, buf); |
c906108c SS |
11894 | } |
11895 | ||
11896 | static CORE_ADDR | |
fe1b8b76 | 11897 | read_address (bfd *abfd, gdb_byte *buf, struct dwarf2_cu *cu, |
891d2f0b | 11898 | unsigned int *bytes_read) |
c906108c | 11899 | { |
e7c27a73 | 11900 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
11901 | CORE_ADDR retval = 0; |
11902 | ||
107d2387 | 11903 | if (cu_header->signed_addr_p) |
c906108c | 11904 | { |
107d2387 AC |
11905 | switch (cu_header->addr_size) |
11906 | { | |
11907 | case 2: | |
fe1b8b76 | 11908 | retval = bfd_get_signed_16 (abfd, buf); |
107d2387 AC |
11909 | break; |
11910 | case 4: | |
fe1b8b76 | 11911 | retval = bfd_get_signed_32 (abfd, buf); |
107d2387 AC |
11912 | break; |
11913 | case 8: | |
fe1b8b76 | 11914 | retval = bfd_get_signed_64 (abfd, buf); |
107d2387 AC |
11915 | break; |
11916 | default: | |
8e65ff28 | 11917 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 11918 | _("read_address: bad switch, signed [in module %s]"), |
659b0389 | 11919 | bfd_get_filename (abfd)); |
107d2387 AC |
11920 | } |
11921 | } | |
11922 | else | |
11923 | { | |
11924 | switch (cu_header->addr_size) | |
11925 | { | |
11926 | case 2: | |
fe1b8b76 | 11927 | retval = bfd_get_16 (abfd, buf); |
107d2387 AC |
11928 | break; |
11929 | case 4: | |
fe1b8b76 | 11930 | retval = bfd_get_32 (abfd, buf); |
107d2387 AC |
11931 | break; |
11932 | case 8: | |
fe1b8b76 | 11933 | retval = bfd_get_64 (abfd, buf); |
107d2387 AC |
11934 | break; |
11935 | default: | |
8e65ff28 | 11936 | internal_error (__FILE__, __LINE__, |
a73c6dcd MS |
11937 | _("read_address: bad switch, " |
11938 | "unsigned [in module %s]"), | |
659b0389 | 11939 | bfd_get_filename (abfd)); |
107d2387 | 11940 | } |
c906108c | 11941 | } |
64367e0a | 11942 | |
107d2387 AC |
11943 | *bytes_read = cu_header->addr_size; |
11944 | return retval; | |
c906108c SS |
11945 | } |
11946 | ||
f7ef9339 | 11947 | /* Read the initial length from a section. The (draft) DWARF 3 |
613e1657 KB |
11948 | specification allows the initial length to take up either 4 bytes |
11949 | or 12 bytes. If the first 4 bytes are 0xffffffff, then the next 8 | |
11950 | bytes describe the length and all offsets will be 8 bytes in length | |
11951 | instead of 4. | |
11952 | ||
f7ef9339 KB |
11953 | An older, non-standard 64-bit format is also handled by this |
11954 | function. The older format in question stores the initial length | |
11955 | as an 8-byte quantity without an escape value. Lengths greater | |
11956 | than 2^32 aren't very common which means that the initial 4 bytes | |
11957 | is almost always zero. Since a length value of zero doesn't make | |
11958 | sense for the 32-bit format, this initial zero can be considered to | |
11959 | be an escape value which indicates the presence of the older 64-bit | |
11960 | format. As written, the code can't detect (old format) lengths | |
917c78fc MK |
11961 | greater than 4GB. If it becomes necessary to handle lengths |
11962 | somewhat larger than 4GB, we could allow other small values (such | |
11963 | as the non-sensical values of 1, 2, and 3) to also be used as | |
11964 | escape values indicating the presence of the old format. | |
f7ef9339 | 11965 | |
917c78fc MK |
11966 | The value returned via bytes_read should be used to increment the |
11967 | relevant pointer after calling read_initial_length(). | |
c764a876 | 11968 | |
613e1657 KB |
11969 | [ Note: read_initial_length() and read_offset() are based on the |
11970 | document entitled "DWARF Debugging Information Format", revision | |
f7ef9339 | 11971 | 3, draft 8, dated November 19, 2001. This document was obtained |
613e1657 KB |
11972 | from: |
11973 | ||
f7ef9339 | 11974 | http://reality.sgiweb.org/davea/dwarf3-draft8-011125.pdf |
6e70227d | 11975 | |
613e1657 KB |
11976 | This document is only a draft and is subject to change. (So beware.) |
11977 | ||
f7ef9339 | 11978 | Details regarding the older, non-standard 64-bit format were |
917c78fc MK |
11979 | determined empirically by examining 64-bit ELF files produced by |
11980 | the SGI toolchain on an IRIX 6.5 machine. | |
f7ef9339 KB |
11981 | |
11982 | - Kevin, July 16, 2002 | |
613e1657 KB |
11983 | ] */ |
11984 | ||
11985 | static LONGEST | |
c764a876 | 11986 | read_initial_length (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read) |
613e1657 | 11987 | { |
fe1b8b76 | 11988 | LONGEST length = bfd_get_32 (abfd, buf); |
613e1657 | 11989 | |
dd373385 | 11990 | if (length == 0xffffffff) |
613e1657 | 11991 | { |
fe1b8b76 | 11992 | length = bfd_get_64 (abfd, buf + 4); |
613e1657 | 11993 | *bytes_read = 12; |
613e1657 | 11994 | } |
dd373385 | 11995 | else if (length == 0) |
f7ef9339 | 11996 | { |
dd373385 | 11997 | /* Handle the (non-standard) 64-bit DWARF2 format used by IRIX. */ |
fe1b8b76 | 11998 | length = bfd_get_64 (abfd, buf); |
f7ef9339 | 11999 | *bytes_read = 8; |
f7ef9339 | 12000 | } |
613e1657 KB |
12001 | else |
12002 | { | |
12003 | *bytes_read = 4; | |
613e1657 KB |
12004 | } |
12005 | ||
c764a876 DE |
12006 | return length; |
12007 | } | |
dd373385 | 12008 | |
c764a876 DE |
12009 | /* Cover function for read_initial_length. |
12010 | Returns the length of the object at BUF, and stores the size of the | |
12011 | initial length in *BYTES_READ and stores the size that offsets will be in | |
12012 | *OFFSET_SIZE. | |
12013 | If the initial length size is not equivalent to that specified in | |
12014 | CU_HEADER then issue a complaint. | |
12015 | This is useful when reading non-comp-unit headers. */ | |
dd373385 | 12016 | |
c764a876 DE |
12017 | static LONGEST |
12018 | read_checked_initial_length_and_offset (bfd *abfd, gdb_byte *buf, | |
12019 | const struct comp_unit_head *cu_header, | |
12020 | unsigned int *bytes_read, | |
12021 | unsigned int *offset_size) | |
12022 | { | |
12023 | LONGEST length = read_initial_length (abfd, buf, bytes_read); | |
12024 | ||
12025 | gdb_assert (cu_header->initial_length_size == 4 | |
12026 | || cu_header->initial_length_size == 8 | |
12027 | || cu_header->initial_length_size == 12); | |
12028 | ||
12029 | if (cu_header->initial_length_size != *bytes_read) | |
12030 | complaint (&symfile_complaints, | |
12031 | _("intermixed 32-bit and 64-bit DWARF sections")); | |
dd373385 | 12032 | |
c764a876 | 12033 | *offset_size = (*bytes_read == 4) ? 4 : 8; |
dd373385 | 12034 | return length; |
613e1657 KB |
12035 | } |
12036 | ||
12037 | /* Read an offset from the data stream. The size of the offset is | |
917c78fc | 12038 | given by cu_header->offset_size. */ |
613e1657 KB |
12039 | |
12040 | static LONGEST | |
fe1b8b76 | 12041 | read_offset (bfd *abfd, gdb_byte *buf, const struct comp_unit_head *cu_header, |
891d2f0b | 12042 | unsigned int *bytes_read) |
c764a876 DE |
12043 | { |
12044 | LONGEST offset = read_offset_1 (abfd, buf, cu_header->offset_size); | |
9a619af0 | 12045 | |
c764a876 DE |
12046 | *bytes_read = cu_header->offset_size; |
12047 | return offset; | |
12048 | } | |
12049 | ||
12050 | /* Read an offset from the data stream. */ | |
12051 | ||
12052 | static LONGEST | |
12053 | read_offset_1 (bfd *abfd, gdb_byte *buf, unsigned int offset_size) | |
613e1657 KB |
12054 | { |
12055 | LONGEST retval = 0; | |
12056 | ||
c764a876 | 12057 | switch (offset_size) |
613e1657 KB |
12058 | { |
12059 | case 4: | |
fe1b8b76 | 12060 | retval = bfd_get_32 (abfd, buf); |
613e1657 KB |
12061 | break; |
12062 | case 8: | |
fe1b8b76 | 12063 | retval = bfd_get_64 (abfd, buf); |
613e1657 KB |
12064 | break; |
12065 | default: | |
8e65ff28 | 12066 | internal_error (__FILE__, __LINE__, |
c764a876 | 12067 | _("read_offset_1: bad switch [in module %s]"), |
659b0389 | 12068 | bfd_get_filename (abfd)); |
613e1657 KB |
12069 | } |
12070 | ||
917c78fc | 12071 | return retval; |
613e1657 KB |
12072 | } |
12073 | ||
fe1b8b76 JB |
12074 | static gdb_byte * |
12075 | read_n_bytes (bfd *abfd, gdb_byte *buf, unsigned int size) | |
c906108c SS |
12076 | { |
12077 | /* If the size of a host char is 8 bits, we can return a pointer | |
12078 | to the buffer, otherwise we have to copy the data to a buffer | |
12079 | allocated on the temporary obstack. */ | |
4bdf3d34 | 12080 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c | 12081 | return buf; |
c906108c SS |
12082 | } |
12083 | ||
12084 | static char * | |
9b1c24c8 | 12085 | read_direct_string (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read_ptr) |
c906108c SS |
12086 | { |
12087 | /* If the size of a host char is 8 bits, we can return a pointer | |
12088 | to the string, otherwise we have to copy the string to a buffer | |
12089 | allocated on the temporary obstack. */ | |
4bdf3d34 | 12090 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c SS |
12091 | if (*buf == '\0') |
12092 | { | |
12093 | *bytes_read_ptr = 1; | |
12094 | return NULL; | |
12095 | } | |
fe1b8b76 JB |
12096 | *bytes_read_ptr = strlen ((char *) buf) + 1; |
12097 | return (char *) buf; | |
4bdf3d34 JJ |
12098 | } |
12099 | ||
12100 | static char * | |
cf2c3c16 | 12101 | read_indirect_string_at_offset (bfd *abfd, LONGEST str_offset) |
4bdf3d34 | 12102 | { |
be391dca | 12103 | dwarf2_read_section (dwarf2_per_objfile->objfile, &dwarf2_per_objfile->str); |
dce234bc | 12104 | if (dwarf2_per_objfile->str.buffer == NULL) |
cf2c3c16 TT |
12105 | error (_("DW_FORM_strp used without .debug_str section [in module %s]"), |
12106 | bfd_get_filename (abfd)); | |
dce234bc | 12107 | if (str_offset >= dwarf2_per_objfile->str.size) |
cf2c3c16 TT |
12108 | error (_("DW_FORM_strp pointing outside of " |
12109 | ".debug_str section [in module %s]"), | |
12110 | bfd_get_filename (abfd)); | |
4bdf3d34 | 12111 | gdb_assert (HOST_CHAR_BIT == 8); |
dce234bc | 12112 | if (dwarf2_per_objfile->str.buffer[str_offset] == '\0') |
4bdf3d34 | 12113 | return NULL; |
dce234bc | 12114 | return (char *) (dwarf2_per_objfile->str.buffer + str_offset); |
c906108c SS |
12115 | } |
12116 | ||
cf2c3c16 TT |
12117 | static char * |
12118 | read_indirect_string (bfd *abfd, gdb_byte *buf, | |
12119 | const struct comp_unit_head *cu_header, | |
12120 | unsigned int *bytes_read_ptr) | |
12121 | { | |
12122 | LONGEST str_offset = read_offset (abfd, buf, cu_header, bytes_read_ptr); | |
12123 | ||
12124 | return read_indirect_string_at_offset (abfd, str_offset); | |
12125 | } | |
12126 | ||
12df843f | 12127 | static ULONGEST |
fe1b8b76 | 12128 | read_unsigned_leb128 (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read_ptr) |
c906108c | 12129 | { |
12df843f | 12130 | ULONGEST result; |
ce5d95e1 | 12131 | unsigned int num_read; |
c906108c SS |
12132 | int i, shift; |
12133 | unsigned char byte; | |
12134 | ||
12135 | result = 0; | |
12136 | shift = 0; | |
12137 | num_read = 0; | |
12138 | i = 0; | |
12139 | while (1) | |
12140 | { | |
fe1b8b76 | 12141 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
12142 | buf++; |
12143 | num_read++; | |
12df843f | 12144 | result |= ((ULONGEST) (byte & 127) << shift); |
c906108c SS |
12145 | if ((byte & 128) == 0) |
12146 | { | |
12147 | break; | |
12148 | } | |
12149 | shift += 7; | |
12150 | } | |
12151 | *bytes_read_ptr = num_read; | |
12152 | return result; | |
12153 | } | |
12154 | ||
12df843f | 12155 | static LONGEST |
fe1b8b76 | 12156 | read_signed_leb128 (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read_ptr) |
c906108c | 12157 | { |
12df843f | 12158 | LONGEST result; |
77e0b926 | 12159 | int i, shift, num_read; |
c906108c SS |
12160 | unsigned char byte; |
12161 | ||
12162 | result = 0; | |
12163 | shift = 0; | |
c906108c SS |
12164 | num_read = 0; |
12165 | i = 0; | |
12166 | while (1) | |
12167 | { | |
fe1b8b76 | 12168 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
12169 | buf++; |
12170 | num_read++; | |
12df843f | 12171 | result |= ((LONGEST) (byte & 127) << shift); |
c906108c SS |
12172 | shift += 7; |
12173 | if ((byte & 128) == 0) | |
12174 | { | |
12175 | break; | |
12176 | } | |
12177 | } | |
77e0b926 | 12178 | if ((shift < 8 * sizeof (result)) && (byte & 0x40)) |
12df843f | 12179 | result |= -(((LONGEST) 1) << shift); |
c906108c SS |
12180 | *bytes_read_ptr = num_read; |
12181 | return result; | |
12182 | } | |
12183 | ||
3019eac3 DE |
12184 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. |
12185 | ADDR_BASE is the DW_AT_GNU_addr_base attribute or zero. | |
12186 | ADDR_SIZE is the size of addresses from the CU header. */ | |
12187 | ||
12188 | static CORE_ADDR | |
12189 | read_addr_index_1 (unsigned int addr_index, ULONGEST addr_base, int addr_size) | |
12190 | { | |
12191 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
12192 | bfd *abfd = objfile->obfd; | |
12193 | const gdb_byte *info_ptr; | |
12194 | ||
12195 | dwarf2_read_section (objfile, &dwarf2_per_objfile->addr); | |
12196 | if (dwarf2_per_objfile->addr.buffer == NULL) | |
12197 | error (_("DW_FORM_addr_index used without .debug_addr section [in module %s]"), | |
12198 | objfile->name); | |
12199 | if (addr_base + addr_index * addr_size >= dwarf2_per_objfile->addr.size) | |
12200 | error (_("DW_FORM_addr_index pointing outside of " | |
12201 | ".debug_addr section [in module %s]"), | |
12202 | objfile->name); | |
12203 | info_ptr = (dwarf2_per_objfile->addr.buffer | |
12204 | + addr_base + addr_index * addr_size); | |
12205 | if (addr_size == 4) | |
12206 | return bfd_get_32 (abfd, info_ptr); | |
12207 | else | |
12208 | return bfd_get_64 (abfd, info_ptr); | |
12209 | } | |
12210 | ||
12211 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. */ | |
12212 | ||
12213 | static CORE_ADDR | |
12214 | read_addr_index (struct dwarf2_cu *cu, unsigned int addr_index) | |
12215 | { | |
12216 | return read_addr_index_1 (addr_index, cu->addr_base, cu->header.addr_size); | |
12217 | } | |
12218 | ||
12219 | /* Given a pointer to an leb128 value, fetch the value from .debug_addr. */ | |
12220 | ||
12221 | static CORE_ADDR | |
12222 | read_addr_index_from_leb128 (struct dwarf2_cu *cu, gdb_byte *info_ptr, | |
12223 | unsigned int *bytes_read) | |
12224 | { | |
12225 | bfd *abfd = cu->objfile->obfd; | |
12226 | unsigned int addr_index = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
12227 | ||
12228 | return read_addr_index (cu, addr_index); | |
12229 | } | |
12230 | ||
12231 | /* Data structure to pass results from dwarf2_read_addr_index_reader | |
12232 | back to dwarf2_read_addr_index. */ | |
12233 | ||
12234 | struct dwarf2_read_addr_index_data | |
12235 | { | |
12236 | ULONGEST addr_base; | |
12237 | int addr_size; | |
12238 | }; | |
12239 | ||
12240 | /* die_reader_func for dwarf2_read_addr_index. */ | |
12241 | ||
12242 | static void | |
12243 | dwarf2_read_addr_index_reader (const struct die_reader_specs *reader, | |
12244 | gdb_byte *info_ptr, | |
12245 | struct die_info *comp_unit_die, | |
12246 | int has_children, | |
12247 | void *data) | |
12248 | { | |
12249 | struct dwarf2_cu *cu = reader->cu; | |
12250 | struct dwarf2_read_addr_index_data *aidata = | |
12251 | (struct dwarf2_read_addr_index_data *) data; | |
12252 | ||
12253 | aidata->addr_base = cu->addr_base; | |
12254 | aidata->addr_size = cu->header.addr_size; | |
12255 | } | |
12256 | ||
12257 | /* Given an index in .debug_addr, fetch the value. | |
12258 | NOTE: This can be called during dwarf expression evaluation, | |
12259 | long after the debug information has been read, and thus per_cu->cu | |
12260 | may no longer exist. */ | |
12261 | ||
12262 | CORE_ADDR | |
12263 | dwarf2_read_addr_index (struct dwarf2_per_cu_data *per_cu, | |
12264 | unsigned int addr_index) | |
12265 | { | |
12266 | struct objfile *objfile = per_cu->objfile; | |
12267 | struct dwarf2_cu *cu = per_cu->cu; | |
12268 | ULONGEST addr_base; | |
12269 | int addr_size; | |
12270 | ||
12271 | /* This is intended to be called from outside this file. */ | |
12272 | dw2_setup (objfile); | |
12273 | ||
12274 | /* We need addr_base and addr_size. | |
12275 | If we don't have PER_CU->cu, we have to get it. | |
12276 | Nasty, but the alternative is storing the needed info in PER_CU, | |
12277 | which at this point doesn't seem justified: it's not clear how frequently | |
12278 | it would get used and it would increase the size of every PER_CU. | |
12279 | Entry points like dwarf2_per_cu_addr_size do a similar thing | |
12280 | so we're not in uncharted territory here. | |
12281 | Alas we need to be a bit more complicated as addr_base is contained | |
12282 | in the DIE. | |
12283 | ||
12284 | We don't need to read the entire CU(/TU). | |
12285 | We just need the header and top level die. | |
12286 | IWBN to use the aging mechanism to let us lazily later discard the CU. | |
12287 | See however init_cutu_and_read_dies_simple. */ | |
12288 | ||
12289 | if (cu != NULL) | |
12290 | { | |
12291 | addr_base = cu->addr_base; | |
12292 | addr_size = cu->header.addr_size; | |
12293 | } | |
12294 | else | |
12295 | { | |
12296 | struct dwarf2_read_addr_index_data aidata; | |
12297 | ||
12298 | init_cutu_and_read_dies_simple (per_cu, dwarf2_read_addr_index_reader, | |
12299 | &aidata); | |
12300 | addr_base = aidata.addr_base; | |
12301 | addr_size = aidata.addr_size; | |
12302 | } | |
12303 | ||
12304 | return read_addr_index_1 (addr_index, addr_base, addr_size); | |
12305 | } | |
12306 | ||
12307 | /* Given a DW_AT_str_index, fetch the string. */ | |
12308 | ||
12309 | static char * | |
12310 | read_str_index (const struct die_reader_specs *reader, | |
12311 | struct dwarf2_cu *cu, ULONGEST str_index) | |
12312 | { | |
12313 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
12314 | const char *dwo_name = objfile->name; | |
12315 | bfd *abfd = objfile->obfd; | |
12316 | struct dwo_sections *sections = &reader->dwo_file->sections; | |
12317 | gdb_byte *info_ptr; | |
12318 | ULONGEST str_offset; | |
12319 | ||
12320 | dwarf2_read_section (objfile, §ions->str); | |
12321 | dwarf2_read_section (objfile, §ions->str_offsets); | |
12322 | if (sections->str.buffer == NULL) | |
12323 | error (_("DW_FORM_str_index used without .debug_str.dwo section" | |
12324 | " in CU at offset 0x%lx [in module %s]"), | |
12325 | (long) cu->header.offset.sect_off, dwo_name); | |
12326 | if (sections->str_offsets.buffer == NULL) | |
12327 | error (_("DW_FORM_str_index used without .debug_str_offsets.dwo section" | |
12328 | " in CU at offset 0x%lx [in module %s]"), | |
12329 | (long) cu->header.offset.sect_off, dwo_name); | |
12330 | if (str_index * cu->header.offset_size >= sections->str_offsets.size) | |
12331 | error (_("DW_FORM_str_index pointing outside of .debug_str_offsets.dwo" | |
12332 | " section in CU at offset 0x%lx [in module %s]"), | |
12333 | (long) cu->header.offset.sect_off, dwo_name); | |
12334 | info_ptr = (sections->str_offsets.buffer | |
12335 | + str_index * cu->header.offset_size); | |
12336 | if (cu->header.offset_size == 4) | |
12337 | str_offset = bfd_get_32 (abfd, info_ptr); | |
12338 | else | |
12339 | str_offset = bfd_get_64 (abfd, info_ptr); | |
12340 | if (str_offset >= sections->str.size) | |
12341 | error (_("Offset from DW_FORM_str_index pointing outside of" | |
12342 | " .debug_str.dwo section in CU at offset 0x%lx [in module %s]"), | |
12343 | (long) cu->header.offset.sect_off, dwo_name); | |
12344 | return (char *) (sections->str.buffer + str_offset); | |
12345 | } | |
12346 | ||
3019eac3 DE |
12347 | /* Return the length of an LEB128 number in BUF. */ |
12348 | ||
12349 | static int | |
12350 | leb128_size (const gdb_byte *buf) | |
12351 | { | |
12352 | const gdb_byte *begin = buf; | |
12353 | gdb_byte byte; | |
12354 | ||
12355 | while (1) | |
12356 | { | |
12357 | byte = *buf++; | |
12358 | if ((byte & 128) == 0) | |
12359 | return buf - begin; | |
12360 | } | |
12361 | } | |
12362 | ||
c906108c | 12363 | static void |
e142c38c | 12364 | set_cu_language (unsigned int lang, struct dwarf2_cu *cu) |
c906108c SS |
12365 | { |
12366 | switch (lang) | |
12367 | { | |
12368 | case DW_LANG_C89: | |
76bee0cc | 12369 | case DW_LANG_C99: |
c906108c | 12370 | case DW_LANG_C: |
e142c38c | 12371 | cu->language = language_c; |
c906108c SS |
12372 | break; |
12373 | case DW_LANG_C_plus_plus: | |
e142c38c | 12374 | cu->language = language_cplus; |
c906108c | 12375 | break; |
6aecb9c2 JB |
12376 | case DW_LANG_D: |
12377 | cu->language = language_d; | |
12378 | break; | |
c906108c SS |
12379 | case DW_LANG_Fortran77: |
12380 | case DW_LANG_Fortran90: | |
b21b22e0 | 12381 | case DW_LANG_Fortran95: |
e142c38c | 12382 | cu->language = language_fortran; |
c906108c | 12383 | break; |
a766d390 DE |
12384 | case DW_LANG_Go: |
12385 | cu->language = language_go; | |
12386 | break; | |
c906108c | 12387 | case DW_LANG_Mips_Assembler: |
e142c38c | 12388 | cu->language = language_asm; |
c906108c | 12389 | break; |
bebd888e | 12390 | case DW_LANG_Java: |
e142c38c | 12391 | cu->language = language_java; |
bebd888e | 12392 | break; |
c906108c | 12393 | case DW_LANG_Ada83: |
8aaf0b47 | 12394 | case DW_LANG_Ada95: |
bc5f45f8 JB |
12395 | cu->language = language_ada; |
12396 | break; | |
72019c9c GM |
12397 | case DW_LANG_Modula2: |
12398 | cu->language = language_m2; | |
12399 | break; | |
fe8e67fd PM |
12400 | case DW_LANG_Pascal83: |
12401 | cu->language = language_pascal; | |
12402 | break; | |
22566fbd DJ |
12403 | case DW_LANG_ObjC: |
12404 | cu->language = language_objc; | |
12405 | break; | |
c906108c SS |
12406 | case DW_LANG_Cobol74: |
12407 | case DW_LANG_Cobol85: | |
c906108c | 12408 | default: |
e142c38c | 12409 | cu->language = language_minimal; |
c906108c SS |
12410 | break; |
12411 | } | |
e142c38c | 12412 | cu->language_defn = language_def (cu->language); |
c906108c SS |
12413 | } |
12414 | ||
12415 | /* Return the named attribute or NULL if not there. */ | |
12416 | ||
12417 | static struct attribute * | |
e142c38c | 12418 | dwarf2_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) |
c906108c | 12419 | { |
a48e046c | 12420 | for (;;) |
c906108c | 12421 | { |
a48e046c TT |
12422 | unsigned int i; |
12423 | struct attribute *spec = NULL; | |
12424 | ||
12425 | for (i = 0; i < die->num_attrs; ++i) | |
12426 | { | |
12427 | if (die->attrs[i].name == name) | |
12428 | return &die->attrs[i]; | |
12429 | if (die->attrs[i].name == DW_AT_specification | |
12430 | || die->attrs[i].name == DW_AT_abstract_origin) | |
12431 | spec = &die->attrs[i]; | |
12432 | } | |
12433 | ||
12434 | if (!spec) | |
12435 | break; | |
c906108c | 12436 | |
f2f0e013 | 12437 | die = follow_die_ref (die, spec, &cu); |
f2f0e013 | 12438 | } |
c5aa993b | 12439 | |
c906108c SS |
12440 | return NULL; |
12441 | } | |
12442 | ||
348e048f DE |
12443 | /* Return the named attribute or NULL if not there, |
12444 | but do not follow DW_AT_specification, etc. | |
12445 | This is for use in contexts where we're reading .debug_types dies. | |
12446 | Following DW_AT_specification, DW_AT_abstract_origin will take us | |
12447 | back up the chain, and we want to go down. */ | |
12448 | ||
12449 | static struct attribute * | |
12450 | dwarf2_attr_no_follow (struct die_info *die, unsigned int name, | |
12451 | struct dwarf2_cu *cu) | |
12452 | { | |
12453 | unsigned int i; | |
12454 | ||
12455 | for (i = 0; i < die->num_attrs; ++i) | |
12456 | if (die->attrs[i].name == name) | |
12457 | return &die->attrs[i]; | |
12458 | ||
12459 | return NULL; | |
12460 | } | |
12461 | ||
05cf31d1 JB |
12462 | /* Return non-zero iff the attribute NAME is defined for the given DIE, |
12463 | and holds a non-zero value. This function should only be used for | |
2dc7f7b3 | 12464 | DW_FORM_flag or DW_FORM_flag_present attributes. */ |
05cf31d1 JB |
12465 | |
12466 | static int | |
12467 | dwarf2_flag_true_p (struct die_info *die, unsigned name, struct dwarf2_cu *cu) | |
12468 | { | |
12469 | struct attribute *attr = dwarf2_attr (die, name, cu); | |
12470 | ||
12471 | return (attr && DW_UNSND (attr)); | |
12472 | } | |
12473 | ||
3ca72b44 | 12474 | static int |
e142c38c | 12475 | die_is_declaration (struct die_info *die, struct dwarf2_cu *cu) |
3ca72b44 | 12476 | { |
05cf31d1 JB |
12477 | /* A DIE is a declaration if it has a DW_AT_declaration attribute |
12478 | which value is non-zero. However, we have to be careful with | |
12479 | DIEs having a DW_AT_specification attribute, because dwarf2_attr() | |
12480 | (via dwarf2_flag_true_p) follows this attribute. So we may | |
12481 | end up accidently finding a declaration attribute that belongs | |
12482 | to a different DIE referenced by the specification attribute, | |
12483 | even though the given DIE does not have a declaration attribute. */ | |
12484 | return (dwarf2_flag_true_p (die, DW_AT_declaration, cu) | |
12485 | && dwarf2_attr (die, DW_AT_specification, cu) == NULL); | |
3ca72b44 AC |
12486 | } |
12487 | ||
63d06c5c | 12488 | /* Return the die giving the specification for DIE, if there is |
f2f0e013 | 12489 | one. *SPEC_CU is the CU containing DIE on input, and the CU |
edb3359d DJ |
12490 | containing the return value on output. If there is no |
12491 | specification, but there is an abstract origin, that is | |
12492 | returned. */ | |
63d06c5c DC |
12493 | |
12494 | static struct die_info * | |
f2f0e013 | 12495 | die_specification (struct die_info *die, struct dwarf2_cu **spec_cu) |
63d06c5c | 12496 | { |
f2f0e013 DJ |
12497 | struct attribute *spec_attr = dwarf2_attr (die, DW_AT_specification, |
12498 | *spec_cu); | |
63d06c5c | 12499 | |
edb3359d DJ |
12500 | if (spec_attr == NULL) |
12501 | spec_attr = dwarf2_attr (die, DW_AT_abstract_origin, *spec_cu); | |
12502 | ||
63d06c5c DC |
12503 | if (spec_attr == NULL) |
12504 | return NULL; | |
12505 | else | |
f2f0e013 | 12506 | return follow_die_ref (die, spec_attr, spec_cu); |
63d06c5c | 12507 | } |
c906108c | 12508 | |
debd256d | 12509 | /* Free the line_header structure *LH, and any arrays and strings it |
ae2de4f8 DE |
12510 | refers to. |
12511 | NOTE: This is also used as a "cleanup" function. */ | |
12512 | ||
debd256d JB |
12513 | static void |
12514 | free_line_header (struct line_header *lh) | |
12515 | { | |
12516 | if (lh->standard_opcode_lengths) | |
a8bc7b56 | 12517 | xfree (lh->standard_opcode_lengths); |
debd256d JB |
12518 | |
12519 | /* Remember that all the lh->file_names[i].name pointers are | |
12520 | pointers into debug_line_buffer, and don't need to be freed. */ | |
12521 | if (lh->file_names) | |
a8bc7b56 | 12522 | xfree (lh->file_names); |
debd256d JB |
12523 | |
12524 | /* Similarly for the include directory names. */ | |
12525 | if (lh->include_dirs) | |
a8bc7b56 | 12526 | xfree (lh->include_dirs); |
debd256d | 12527 | |
a8bc7b56 | 12528 | xfree (lh); |
debd256d JB |
12529 | } |
12530 | ||
debd256d | 12531 | /* Add an entry to LH's include directory table. */ |
ae2de4f8 | 12532 | |
debd256d JB |
12533 | static void |
12534 | add_include_dir (struct line_header *lh, char *include_dir) | |
c906108c | 12535 | { |
debd256d JB |
12536 | /* Grow the array if necessary. */ |
12537 | if (lh->include_dirs_size == 0) | |
c5aa993b | 12538 | { |
debd256d JB |
12539 | lh->include_dirs_size = 1; /* for testing */ |
12540 | lh->include_dirs = xmalloc (lh->include_dirs_size | |
12541 | * sizeof (*lh->include_dirs)); | |
12542 | } | |
12543 | else if (lh->num_include_dirs >= lh->include_dirs_size) | |
12544 | { | |
12545 | lh->include_dirs_size *= 2; | |
12546 | lh->include_dirs = xrealloc (lh->include_dirs, | |
12547 | (lh->include_dirs_size | |
12548 | * sizeof (*lh->include_dirs))); | |
c5aa993b | 12549 | } |
c906108c | 12550 | |
debd256d JB |
12551 | lh->include_dirs[lh->num_include_dirs++] = include_dir; |
12552 | } | |
6e70227d | 12553 | |
debd256d | 12554 | /* Add an entry to LH's file name table. */ |
ae2de4f8 | 12555 | |
debd256d JB |
12556 | static void |
12557 | add_file_name (struct line_header *lh, | |
12558 | char *name, | |
12559 | unsigned int dir_index, | |
12560 | unsigned int mod_time, | |
12561 | unsigned int length) | |
12562 | { | |
12563 | struct file_entry *fe; | |
12564 | ||
12565 | /* Grow the array if necessary. */ | |
12566 | if (lh->file_names_size == 0) | |
12567 | { | |
12568 | lh->file_names_size = 1; /* for testing */ | |
12569 | lh->file_names = xmalloc (lh->file_names_size | |
12570 | * sizeof (*lh->file_names)); | |
12571 | } | |
12572 | else if (lh->num_file_names >= lh->file_names_size) | |
12573 | { | |
12574 | lh->file_names_size *= 2; | |
12575 | lh->file_names = xrealloc (lh->file_names, | |
12576 | (lh->file_names_size | |
12577 | * sizeof (*lh->file_names))); | |
12578 | } | |
12579 | ||
12580 | fe = &lh->file_names[lh->num_file_names++]; | |
12581 | fe->name = name; | |
12582 | fe->dir_index = dir_index; | |
12583 | fe->mod_time = mod_time; | |
12584 | fe->length = length; | |
aaa75496 | 12585 | fe->included_p = 0; |
cb1df416 | 12586 | fe->symtab = NULL; |
debd256d | 12587 | } |
6e70227d | 12588 | |
debd256d | 12589 | /* Read the statement program header starting at OFFSET in |
3019eac3 | 12590 | .debug_line, or .debug_line.dwo. Return a pointer |
6502dd73 | 12591 | to a struct line_header, allocated using xmalloc. |
debd256d JB |
12592 | |
12593 | NOTE: the strings in the include directory and file name tables of | |
3019eac3 DE |
12594 | the returned object point into the dwarf line section buffer, |
12595 | and must not be freed. */ | |
ae2de4f8 | 12596 | |
debd256d | 12597 | static struct line_header * |
3019eac3 | 12598 | dwarf_decode_line_header (unsigned int offset, struct dwarf2_cu *cu) |
debd256d JB |
12599 | { |
12600 | struct cleanup *back_to; | |
12601 | struct line_header *lh; | |
fe1b8b76 | 12602 | gdb_byte *line_ptr; |
c764a876 | 12603 | unsigned int bytes_read, offset_size; |
debd256d JB |
12604 | int i; |
12605 | char *cur_dir, *cur_file; | |
3019eac3 DE |
12606 | struct dwarf2_section_info *section; |
12607 | bfd *abfd; | |
12608 | ||
12609 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
12610 | DWO file. */ | |
12611 | if (cu->dwo_unit && cu->per_cu->is_debug_types) | |
12612 | section = &cu->dwo_unit->dwo_file->sections.line; | |
12613 | else | |
12614 | section = &dwarf2_per_objfile->line; | |
debd256d | 12615 | |
3019eac3 DE |
12616 | dwarf2_read_section (dwarf2_per_objfile->objfile, section); |
12617 | if (section->buffer == NULL) | |
debd256d | 12618 | { |
3019eac3 DE |
12619 | if (cu->dwo_unit && cu->per_cu->is_debug_types) |
12620 | complaint (&symfile_complaints, _("missing .debug_line.dwo section")); | |
12621 | else | |
12622 | complaint (&symfile_complaints, _("missing .debug_line section")); | |
debd256d JB |
12623 | return 0; |
12624 | } | |
12625 | ||
fceca515 DE |
12626 | /* We can't do this until we know the section is non-empty. |
12627 | Only then do we know we have such a section. */ | |
12628 | abfd = section->asection->owner; | |
12629 | ||
a738430d MK |
12630 | /* Make sure that at least there's room for the total_length field. |
12631 | That could be 12 bytes long, but we're just going to fudge that. */ | |
3019eac3 | 12632 | if (offset + 4 >= section->size) |
debd256d | 12633 | { |
4d3c2250 | 12634 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
12635 | return 0; |
12636 | } | |
12637 | ||
12638 | lh = xmalloc (sizeof (*lh)); | |
12639 | memset (lh, 0, sizeof (*lh)); | |
12640 | back_to = make_cleanup ((make_cleanup_ftype *) free_line_header, | |
12641 | (void *) lh); | |
12642 | ||
3019eac3 | 12643 | line_ptr = section->buffer + offset; |
debd256d | 12644 | |
a738430d | 12645 | /* Read in the header. */ |
6e70227d | 12646 | lh->total_length = |
c764a876 DE |
12647 | read_checked_initial_length_and_offset (abfd, line_ptr, &cu->header, |
12648 | &bytes_read, &offset_size); | |
debd256d | 12649 | line_ptr += bytes_read; |
3019eac3 | 12650 | if (line_ptr + lh->total_length > (section->buffer + section->size)) |
debd256d | 12651 | { |
4d3c2250 | 12652 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
12653 | return 0; |
12654 | } | |
12655 | lh->statement_program_end = line_ptr + lh->total_length; | |
12656 | lh->version = read_2_bytes (abfd, line_ptr); | |
12657 | line_ptr += 2; | |
c764a876 DE |
12658 | lh->header_length = read_offset_1 (abfd, line_ptr, offset_size); |
12659 | line_ptr += offset_size; | |
debd256d JB |
12660 | lh->minimum_instruction_length = read_1_byte (abfd, line_ptr); |
12661 | line_ptr += 1; | |
2dc7f7b3 TT |
12662 | if (lh->version >= 4) |
12663 | { | |
12664 | lh->maximum_ops_per_instruction = read_1_byte (abfd, line_ptr); | |
12665 | line_ptr += 1; | |
12666 | } | |
12667 | else | |
12668 | lh->maximum_ops_per_instruction = 1; | |
12669 | ||
12670 | if (lh->maximum_ops_per_instruction == 0) | |
12671 | { | |
12672 | lh->maximum_ops_per_instruction = 1; | |
12673 | complaint (&symfile_complaints, | |
3e43a32a MS |
12674 | _("invalid maximum_ops_per_instruction " |
12675 | "in `.debug_line' section")); | |
2dc7f7b3 TT |
12676 | } |
12677 | ||
debd256d JB |
12678 | lh->default_is_stmt = read_1_byte (abfd, line_ptr); |
12679 | line_ptr += 1; | |
12680 | lh->line_base = read_1_signed_byte (abfd, line_ptr); | |
12681 | line_ptr += 1; | |
12682 | lh->line_range = read_1_byte (abfd, line_ptr); | |
12683 | line_ptr += 1; | |
12684 | lh->opcode_base = read_1_byte (abfd, line_ptr); | |
12685 | line_ptr += 1; | |
12686 | lh->standard_opcode_lengths | |
fe1b8b76 | 12687 | = xmalloc (lh->opcode_base * sizeof (lh->standard_opcode_lengths[0])); |
debd256d JB |
12688 | |
12689 | lh->standard_opcode_lengths[0] = 1; /* This should never be used anyway. */ | |
12690 | for (i = 1; i < lh->opcode_base; ++i) | |
12691 | { | |
12692 | lh->standard_opcode_lengths[i] = read_1_byte (abfd, line_ptr); | |
12693 | line_ptr += 1; | |
12694 | } | |
12695 | ||
a738430d | 12696 | /* Read directory table. */ |
9b1c24c8 | 12697 | while ((cur_dir = read_direct_string (abfd, line_ptr, &bytes_read)) != NULL) |
debd256d JB |
12698 | { |
12699 | line_ptr += bytes_read; | |
12700 | add_include_dir (lh, cur_dir); | |
12701 | } | |
12702 | line_ptr += bytes_read; | |
12703 | ||
a738430d | 12704 | /* Read file name table. */ |
9b1c24c8 | 12705 | while ((cur_file = read_direct_string (abfd, line_ptr, &bytes_read)) != NULL) |
debd256d JB |
12706 | { |
12707 | unsigned int dir_index, mod_time, length; | |
12708 | ||
12709 | line_ptr += bytes_read; | |
12710 | dir_index = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
12711 | line_ptr += bytes_read; | |
12712 | mod_time = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
12713 | line_ptr += bytes_read; | |
12714 | length = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
12715 | line_ptr += bytes_read; | |
12716 | ||
12717 | add_file_name (lh, cur_file, dir_index, mod_time, length); | |
12718 | } | |
12719 | line_ptr += bytes_read; | |
6e70227d | 12720 | lh->statement_program_start = line_ptr; |
debd256d | 12721 | |
3019eac3 | 12722 | if (line_ptr > (section->buffer + section->size)) |
4d3c2250 | 12723 | complaint (&symfile_complaints, |
3e43a32a MS |
12724 | _("line number info header doesn't " |
12725 | "fit in `.debug_line' section")); | |
debd256d JB |
12726 | |
12727 | discard_cleanups (back_to); | |
12728 | return lh; | |
12729 | } | |
c906108c | 12730 | |
c6da4cef DE |
12731 | /* Subroutine of dwarf_decode_lines to simplify it. |
12732 | Return the file name of the psymtab for included file FILE_INDEX | |
12733 | in line header LH of PST. | |
12734 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
12735 | If space for the result is malloc'd, it will be freed by a cleanup. | |
12736 | Returns NULL if FILE_INDEX should be ignored, i.e., it is pst->filename. */ | |
12737 | ||
12738 | static char * | |
12739 | psymtab_include_file_name (const struct line_header *lh, int file_index, | |
12740 | const struct partial_symtab *pst, | |
12741 | const char *comp_dir) | |
12742 | { | |
12743 | const struct file_entry fe = lh->file_names [file_index]; | |
12744 | char *include_name = fe.name; | |
12745 | char *include_name_to_compare = include_name; | |
12746 | char *dir_name = NULL; | |
72b9f47f TT |
12747 | const char *pst_filename; |
12748 | char *copied_name = NULL; | |
c6da4cef DE |
12749 | int file_is_pst; |
12750 | ||
12751 | if (fe.dir_index) | |
12752 | dir_name = lh->include_dirs[fe.dir_index - 1]; | |
12753 | ||
12754 | if (!IS_ABSOLUTE_PATH (include_name) | |
12755 | && (dir_name != NULL || comp_dir != NULL)) | |
12756 | { | |
12757 | /* Avoid creating a duplicate psymtab for PST. | |
12758 | We do this by comparing INCLUDE_NAME and PST_FILENAME. | |
12759 | Before we do the comparison, however, we need to account | |
12760 | for DIR_NAME and COMP_DIR. | |
12761 | First prepend dir_name (if non-NULL). If we still don't | |
12762 | have an absolute path prepend comp_dir (if non-NULL). | |
12763 | However, the directory we record in the include-file's | |
12764 | psymtab does not contain COMP_DIR (to match the | |
12765 | corresponding symtab(s)). | |
12766 | ||
12767 | Example: | |
12768 | ||
12769 | bash$ cd /tmp | |
12770 | bash$ gcc -g ./hello.c | |
12771 | include_name = "hello.c" | |
12772 | dir_name = "." | |
12773 | DW_AT_comp_dir = comp_dir = "/tmp" | |
12774 | DW_AT_name = "./hello.c" */ | |
12775 | ||
12776 | if (dir_name != NULL) | |
12777 | { | |
12778 | include_name = concat (dir_name, SLASH_STRING, | |
12779 | include_name, (char *)NULL); | |
12780 | include_name_to_compare = include_name; | |
12781 | make_cleanup (xfree, include_name); | |
12782 | } | |
12783 | if (!IS_ABSOLUTE_PATH (include_name) && comp_dir != NULL) | |
12784 | { | |
12785 | include_name_to_compare = concat (comp_dir, SLASH_STRING, | |
12786 | include_name, (char *)NULL); | |
12787 | } | |
12788 | } | |
12789 | ||
12790 | pst_filename = pst->filename; | |
12791 | if (!IS_ABSOLUTE_PATH (pst_filename) && pst->dirname != NULL) | |
12792 | { | |
72b9f47f TT |
12793 | copied_name = concat (pst->dirname, SLASH_STRING, |
12794 | pst_filename, (char *)NULL); | |
12795 | pst_filename = copied_name; | |
c6da4cef DE |
12796 | } |
12797 | ||
1e3fad37 | 12798 | file_is_pst = FILENAME_CMP (include_name_to_compare, pst_filename) == 0; |
c6da4cef DE |
12799 | |
12800 | if (include_name_to_compare != include_name) | |
12801 | xfree (include_name_to_compare); | |
72b9f47f TT |
12802 | if (copied_name != NULL) |
12803 | xfree (copied_name); | |
c6da4cef DE |
12804 | |
12805 | if (file_is_pst) | |
12806 | return NULL; | |
12807 | return include_name; | |
12808 | } | |
12809 | ||
c91513d8 PP |
12810 | /* Ignore this record_line request. */ |
12811 | ||
12812 | static void | |
12813 | noop_record_line (struct subfile *subfile, int line, CORE_ADDR pc) | |
12814 | { | |
12815 | return; | |
12816 | } | |
12817 | ||
f3f5162e DE |
12818 | /* Subroutine of dwarf_decode_lines to simplify it. |
12819 | Process the line number information in LH. */ | |
debd256d | 12820 | |
c906108c | 12821 | static void |
f3f5162e DE |
12822 | dwarf_decode_lines_1 (struct line_header *lh, const char *comp_dir, |
12823 | struct dwarf2_cu *cu, struct partial_symtab *pst) | |
c906108c | 12824 | { |
a8c50c1f | 12825 | gdb_byte *line_ptr, *extended_end; |
fe1b8b76 | 12826 | gdb_byte *line_end; |
a8c50c1f | 12827 | unsigned int bytes_read, extended_len; |
c906108c | 12828 | unsigned char op_code, extended_op, adj_opcode; |
e142c38c DJ |
12829 | CORE_ADDR baseaddr; |
12830 | struct objfile *objfile = cu->objfile; | |
f3f5162e | 12831 | bfd *abfd = objfile->obfd; |
fbf65064 | 12832 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
aaa75496 | 12833 | const int decode_for_pst_p = (pst != NULL); |
f3f5162e | 12834 | struct subfile *last_subfile = NULL; |
c91513d8 PP |
12835 | void (*p_record_line) (struct subfile *subfile, int line, CORE_ADDR pc) |
12836 | = record_line; | |
e142c38c DJ |
12837 | |
12838 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 12839 | |
debd256d JB |
12840 | line_ptr = lh->statement_program_start; |
12841 | line_end = lh->statement_program_end; | |
c906108c SS |
12842 | |
12843 | /* Read the statement sequences until there's nothing left. */ | |
12844 | while (line_ptr < line_end) | |
12845 | { | |
12846 | /* state machine registers */ | |
12847 | CORE_ADDR address = 0; | |
12848 | unsigned int file = 1; | |
12849 | unsigned int line = 1; | |
12850 | unsigned int column = 0; | |
debd256d | 12851 | int is_stmt = lh->default_is_stmt; |
c906108c SS |
12852 | int basic_block = 0; |
12853 | int end_sequence = 0; | |
fbf65064 | 12854 | CORE_ADDR addr; |
2dc7f7b3 | 12855 | unsigned char op_index = 0; |
c906108c | 12856 | |
aaa75496 | 12857 | if (!decode_for_pst_p && lh->num_file_names >= file) |
c906108c | 12858 | { |
aaa75496 | 12859 | /* Start a subfile for the current file of the state machine. */ |
debd256d JB |
12860 | /* lh->include_dirs and lh->file_names are 0-based, but the |
12861 | directory and file name numbers in the statement program | |
12862 | are 1-based. */ | |
12863 | struct file_entry *fe = &lh->file_names[file - 1]; | |
4f1520fb | 12864 | char *dir = NULL; |
a738430d | 12865 | |
debd256d JB |
12866 | if (fe->dir_index) |
12867 | dir = lh->include_dirs[fe->dir_index - 1]; | |
4f1520fb FR |
12868 | |
12869 | dwarf2_start_subfile (fe->name, dir, comp_dir); | |
c906108c SS |
12870 | } |
12871 | ||
a738430d | 12872 | /* Decode the table. */ |
c5aa993b | 12873 | while (!end_sequence) |
c906108c SS |
12874 | { |
12875 | op_code = read_1_byte (abfd, line_ptr); | |
12876 | line_ptr += 1; | |
59205f5a JB |
12877 | if (line_ptr > line_end) |
12878 | { | |
12879 | dwarf2_debug_line_missing_end_sequence_complaint (); | |
12880 | break; | |
12881 | } | |
9aa1fe7e | 12882 | |
debd256d | 12883 | if (op_code >= lh->opcode_base) |
6e70227d | 12884 | { |
a738430d | 12885 | /* Special operand. */ |
debd256d | 12886 | adj_opcode = op_code - lh->opcode_base; |
2dc7f7b3 TT |
12887 | address += (((op_index + (adj_opcode / lh->line_range)) |
12888 | / lh->maximum_ops_per_instruction) | |
12889 | * lh->minimum_instruction_length); | |
12890 | op_index = ((op_index + (adj_opcode / lh->line_range)) | |
12891 | % lh->maximum_ops_per_instruction); | |
debd256d | 12892 | line += lh->line_base + (adj_opcode % lh->line_range); |
59205f5a | 12893 | if (lh->num_file_names < file || file == 0) |
25e43795 | 12894 | dwarf2_debug_line_missing_file_complaint (); |
2dc7f7b3 TT |
12895 | /* For now we ignore lines not starting on an |
12896 | instruction boundary. */ | |
12897 | else if (op_index == 0) | |
25e43795 DJ |
12898 | { |
12899 | lh->file_names[file - 1].included_p = 1; | |
ca5f395d | 12900 | if (!decode_for_pst_p && is_stmt) |
fbf65064 UW |
12901 | { |
12902 | if (last_subfile != current_subfile) | |
12903 | { | |
12904 | addr = gdbarch_addr_bits_remove (gdbarch, address); | |
12905 | if (last_subfile) | |
c91513d8 | 12906 | (*p_record_line) (last_subfile, 0, addr); |
fbf65064 UW |
12907 | last_subfile = current_subfile; |
12908 | } | |
25e43795 | 12909 | /* Append row to matrix using current values. */ |
7019d805 | 12910 | addr = gdbarch_addr_bits_remove (gdbarch, address); |
c91513d8 | 12911 | (*p_record_line) (current_subfile, line, addr); |
366da635 | 12912 | } |
25e43795 | 12913 | } |
ca5f395d | 12914 | basic_block = 0; |
9aa1fe7e GK |
12915 | } |
12916 | else switch (op_code) | |
c906108c SS |
12917 | { |
12918 | case DW_LNS_extended_op: | |
3e43a32a MS |
12919 | extended_len = read_unsigned_leb128 (abfd, line_ptr, |
12920 | &bytes_read); | |
473b7be6 | 12921 | line_ptr += bytes_read; |
a8c50c1f | 12922 | extended_end = line_ptr + extended_len; |
c906108c SS |
12923 | extended_op = read_1_byte (abfd, line_ptr); |
12924 | line_ptr += 1; | |
12925 | switch (extended_op) | |
12926 | { | |
12927 | case DW_LNE_end_sequence: | |
c91513d8 | 12928 | p_record_line = record_line; |
c906108c | 12929 | end_sequence = 1; |
c906108c SS |
12930 | break; |
12931 | case DW_LNE_set_address: | |
e7c27a73 | 12932 | address = read_address (abfd, line_ptr, cu, &bytes_read); |
c91513d8 PP |
12933 | |
12934 | if (address == 0 && !dwarf2_per_objfile->has_section_at_zero) | |
12935 | { | |
12936 | /* This line table is for a function which has been | |
12937 | GCd by the linker. Ignore it. PR gdb/12528 */ | |
12938 | ||
12939 | long line_offset | |
12940 | = line_ptr - dwarf2_per_objfile->line.buffer; | |
12941 | ||
12942 | complaint (&symfile_complaints, | |
12943 | _(".debug_line address at offset 0x%lx is 0 " | |
12944 | "[in module %s]"), | |
bb5ed363 | 12945 | line_offset, objfile->name); |
c91513d8 PP |
12946 | p_record_line = noop_record_line; |
12947 | } | |
12948 | ||
2dc7f7b3 | 12949 | op_index = 0; |
107d2387 AC |
12950 | line_ptr += bytes_read; |
12951 | address += baseaddr; | |
c906108c SS |
12952 | break; |
12953 | case DW_LNE_define_file: | |
debd256d JB |
12954 | { |
12955 | char *cur_file; | |
12956 | unsigned int dir_index, mod_time, length; | |
6e70227d | 12957 | |
3e43a32a MS |
12958 | cur_file = read_direct_string (abfd, line_ptr, |
12959 | &bytes_read); | |
debd256d JB |
12960 | line_ptr += bytes_read; |
12961 | dir_index = | |
12962 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
12963 | line_ptr += bytes_read; | |
12964 | mod_time = | |
12965 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
12966 | line_ptr += bytes_read; | |
12967 | length = | |
12968 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
12969 | line_ptr += bytes_read; | |
12970 | add_file_name (lh, cur_file, dir_index, mod_time, length); | |
12971 | } | |
c906108c | 12972 | break; |
d0c6ba3d CC |
12973 | case DW_LNE_set_discriminator: |
12974 | /* The discriminator is not interesting to the debugger; | |
12975 | just ignore it. */ | |
12976 | line_ptr = extended_end; | |
12977 | break; | |
c906108c | 12978 | default: |
4d3c2250 | 12979 | complaint (&symfile_complaints, |
e2e0b3e5 | 12980 | _("mangled .debug_line section")); |
debd256d | 12981 | return; |
c906108c | 12982 | } |
a8c50c1f DJ |
12983 | /* Make sure that we parsed the extended op correctly. If e.g. |
12984 | we expected a different address size than the producer used, | |
12985 | we may have read the wrong number of bytes. */ | |
12986 | if (line_ptr != extended_end) | |
12987 | { | |
12988 | complaint (&symfile_complaints, | |
12989 | _("mangled .debug_line section")); | |
12990 | return; | |
12991 | } | |
c906108c SS |
12992 | break; |
12993 | case DW_LNS_copy: | |
59205f5a | 12994 | if (lh->num_file_names < file || file == 0) |
25e43795 DJ |
12995 | dwarf2_debug_line_missing_file_complaint (); |
12996 | else | |
366da635 | 12997 | { |
25e43795 | 12998 | lh->file_names[file - 1].included_p = 1; |
ca5f395d | 12999 | if (!decode_for_pst_p && is_stmt) |
fbf65064 UW |
13000 | { |
13001 | if (last_subfile != current_subfile) | |
13002 | { | |
13003 | addr = gdbarch_addr_bits_remove (gdbarch, address); | |
13004 | if (last_subfile) | |
c91513d8 | 13005 | (*p_record_line) (last_subfile, 0, addr); |
fbf65064 UW |
13006 | last_subfile = current_subfile; |
13007 | } | |
7019d805 | 13008 | addr = gdbarch_addr_bits_remove (gdbarch, address); |
c91513d8 | 13009 | (*p_record_line) (current_subfile, line, addr); |
fbf65064 | 13010 | } |
366da635 | 13011 | } |
c906108c SS |
13012 | basic_block = 0; |
13013 | break; | |
13014 | case DW_LNS_advance_pc: | |
2dc7f7b3 TT |
13015 | { |
13016 | CORE_ADDR adjust | |
13017 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
13018 | ||
13019 | address += (((op_index + adjust) | |
13020 | / lh->maximum_ops_per_instruction) | |
13021 | * lh->minimum_instruction_length); | |
13022 | op_index = ((op_index + adjust) | |
13023 | % lh->maximum_ops_per_instruction); | |
13024 | line_ptr += bytes_read; | |
13025 | } | |
c906108c SS |
13026 | break; |
13027 | case DW_LNS_advance_line: | |
13028 | line += read_signed_leb128 (abfd, line_ptr, &bytes_read); | |
13029 | line_ptr += bytes_read; | |
13030 | break; | |
13031 | case DW_LNS_set_file: | |
debd256d | 13032 | { |
a738430d MK |
13033 | /* The arrays lh->include_dirs and lh->file_names are |
13034 | 0-based, but the directory and file name numbers in | |
13035 | the statement program are 1-based. */ | |
debd256d | 13036 | struct file_entry *fe; |
4f1520fb | 13037 | char *dir = NULL; |
a738430d | 13038 | |
debd256d JB |
13039 | file = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
13040 | line_ptr += bytes_read; | |
59205f5a | 13041 | if (lh->num_file_names < file || file == 0) |
25e43795 DJ |
13042 | dwarf2_debug_line_missing_file_complaint (); |
13043 | else | |
13044 | { | |
13045 | fe = &lh->file_names[file - 1]; | |
13046 | if (fe->dir_index) | |
13047 | dir = lh->include_dirs[fe->dir_index - 1]; | |
13048 | if (!decode_for_pst_p) | |
13049 | { | |
13050 | last_subfile = current_subfile; | |
13051 | dwarf2_start_subfile (fe->name, dir, comp_dir); | |
13052 | } | |
13053 | } | |
debd256d | 13054 | } |
c906108c SS |
13055 | break; |
13056 | case DW_LNS_set_column: | |
13057 | column = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
13058 | line_ptr += bytes_read; | |
13059 | break; | |
13060 | case DW_LNS_negate_stmt: | |
13061 | is_stmt = (!is_stmt); | |
13062 | break; | |
13063 | case DW_LNS_set_basic_block: | |
13064 | basic_block = 1; | |
13065 | break; | |
c2c6d25f JM |
13066 | /* Add to the address register of the state machine the |
13067 | address increment value corresponding to special opcode | |
a738430d MK |
13068 | 255. I.e., this value is scaled by the minimum |
13069 | instruction length since special opcode 255 would have | |
b021a221 | 13070 | scaled the increment. */ |
c906108c | 13071 | case DW_LNS_const_add_pc: |
2dc7f7b3 TT |
13072 | { |
13073 | CORE_ADDR adjust = (255 - lh->opcode_base) / lh->line_range; | |
13074 | ||
13075 | address += (((op_index + adjust) | |
13076 | / lh->maximum_ops_per_instruction) | |
13077 | * lh->minimum_instruction_length); | |
13078 | op_index = ((op_index + adjust) | |
13079 | % lh->maximum_ops_per_instruction); | |
13080 | } | |
c906108c SS |
13081 | break; |
13082 | case DW_LNS_fixed_advance_pc: | |
13083 | address += read_2_bytes (abfd, line_ptr); | |
2dc7f7b3 | 13084 | op_index = 0; |
c906108c SS |
13085 | line_ptr += 2; |
13086 | break; | |
9aa1fe7e | 13087 | default: |
a738430d MK |
13088 | { |
13089 | /* Unknown standard opcode, ignore it. */ | |
9aa1fe7e | 13090 | int i; |
a738430d | 13091 | |
debd256d | 13092 | for (i = 0; i < lh->standard_opcode_lengths[op_code]; i++) |
9aa1fe7e GK |
13093 | { |
13094 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
13095 | line_ptr += bytes_read; | |
13096 | } | |
13097 | } | |
c906108c SS |
13098 | } |
13099 | } | |
59205f5a JB |
13100 | if (lh->num_file_names < file || file == 0) |
13101 | dwarf2_debug_line_missing_file_complaint (); | |
13102 | else | |
13103 | { | |
13104 | lh->file_names[file - 1].included_p = 1; | |
13105 | if (!decode_for_pst_p) | |
fbf65064 UW |
13106 | { |
13107 | addr = gdbarch_addr_bits_remove (gdbarch, address); | |
c91513d8 | 13108 | (*p_record_line) (current_subfile, 0, addr); |
fbf65064 | 13109 | } |
59205f5a | 13110 | } |
c906108c | 13111 | } |
f3f5162e DE |
13112 | } |
13113 | ||
13114 | /* Decode the Line Number Program (LNP) for the given line_header | |
13115 | structure and CU. The actual information extracted and the type | |
13116 | of structures created from the LNP depends on the value of PST. | |
13117 | ||
13118 | 1. If PST is NULL, then this procedure uses the data from the program | |
13119 | to create all necessary symbol tables, and their linetables. | |
13120 | ||
13121 | 2. If PST is not NULL, this procedure reads the program to determine | |
13122 | the list of files included by the unit represented by PST, and | |
13123 | builds all the associated partial symbol tables. | |
13124 | ||
13125 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
13126 | It is used for relative paths in the line table. | |
13127 | NOTE: When processing partial symtabs (pst != NULL), | |
13128 | comp_dir == pst->dirname. | |
13129 | ||
13130 | NOTE: It is important that psymtabs have the same file name (via strcmp) | |
13131 | as the corresponding symtab. Since COMP_DIR is not used in the name of the | |
13132 | symtab we don't use it in the name of the psymtabs we create. | |
13133 | E.g. expand_line_sal requires this when finding psymtabs to expand. | |
13134 | A good testcase for this is mb-inline.exp. */ | |
13135 | ||
13136 | static void | |
13137 | dwarf_decode_lines (struct line_header *lh, const char *comp_dir, | |
13138 | struct dwarf2_cu *cu, struct partial_symtab *pst, | |
13139 | int want_line_info) | |
13140 | { | |
13141 | struct objfile *objfile = cu->objfile; | |
13142 | const int decode_for_pst_p = (pst != NULL); | |
13143 | struct subfile *first_subfile = current_subfile; | |
13144 | ||
13145 | if (want_line_info) | |
13146 | dwarf_decode_lines_1 (lh, comp_dir, cu, pst); | |
aaa75496 JB |
13147 | |
13148 | if (decode_for_pst_p) | |
13149 | { | |
13150 | int file_index; | |
13151 | ||
13152 | /* Now that we're done scanning the Line Header Program, we can | |
13153 | create the psymtab of each included file. */ | |
13154 | for (file_index = 0; file_index < lh->num_file_names; file_index++) | |
13155 | if (lh->file_names[file_index].included_p == 1) | |
13156 | { | |
c6da4cef DE |
13157 | char *include_name = |
13158 | psymtab_include_file_name (lh, file_index, pst, comp_dir); | |
13159 | if (include_name != NULL) | |
aaa75496 JB |
13160 | dwarf2_create_include_psymtab (include_name, pst, objfile); |
13161 | } | |
13162 | } | |
cb1df416 DJ |
13163 | else |
13164 | { | |
13165 | /* Make sure a symtab is created for every file, even files | |
13166 | which contain only variables (i.e. no code with associated | |
13167 | line numbers). */ | |
cb1df416 | 13168 | int i; |
cb1df416 DJ |
13169 | |
13170 | for (i = 0; i < lh->num_file_names; i++) | |
13171 | { | |
13172 | char *dir = NULL; | |
f3f5162e | 13173 | struct file_entry *fe; |
9a619af0 | 13174 | |
cb1df416 DJ |
13175 | fe = &lh->file_names[i]; |
13176 | if (fe->dir_index) | |
13177 | dir = lh->include_dirs[fe->dir_index - 1]; | |
13178 | dwarf2_start_subfile (fe->name, dir, comp_dir); | |
13179 | ||
13180 | /* Skip the main file; we don't need it, and it must be | |
13181 | allocated last, so that it will show up before the | |
13182 | non-primary symtabs in the objfile's symtab list. */ | |
13183 | if (current_subfile == first_subfile) | |
13184 | continue; | |
13185 | ||
13186 | if (current_subfile->symtab == NULL) | |
13187 | current_subfile->symtab = allocate_symtab (current_subfile->name, | |
bb5ed363 | 13188 | objfile); |
cb1df416 DJ |
13189 | fe->symtab = current_subfile->symtab; |
13190 | } | |
13191 | } | |
c906108c SS |
13192 | } |
13193 | ||
13194 | /* Start a subfile for DWARF. FILENAME is the name of the file and | |
13195 | DIRNAME the name of the source directory which contains FILENAME | |
4f1520fb FR |
13196 | or NULL if not known. COMP_DIR is the compilation directory for the |
13197 | linetable's compilation unit or NULL if not known. | |
c906108c SS |
13198 | This routine tries to keep line numbers from identical absolute and |
13199 | relative file names in a common subfile. | |
13200 | ||
13201 | Using the `list' example from the GDB testsuite, which resides in | |
13202 | /srcdir and compiling it with Irix6.2 cc in /compdir using a filename | |
13203 | of /srcdir/list0.c yields the following debugging information for list0.c: | |
13204 | ||
c5aa993b JM |
13205 | DW_AT_name: /srcdir/list0.c |
13206 | DW_AT_comp_dir: /compdir | |
357e46e7 | 13207 | files.files[0].name: list0.h |
c5aa993b | 13208 | files.files[0].dir: /srcdir |
357e46e7 | 13209 | files.files[1].name: list0.c |
c5aa993b | 13210 | files.files[1].dir: /srcdir |
c906108c SS |
13211 | |
13212 | The line number information for list0.c has to end up in a single | |
4f1520fb FR |
13213 | subfile, so that `break /srcdir/list0.c:1' works as expected. |
13214 | start_subfile will ensure that this happens provided that we pass the | |
13215 | concatenation of files.files[1].dir and files.files[1].name as the | |
13216 | subfile's name. */ | |
c906108c SS |
13217 | |
13218 | static void | |
3e43a32a MS |
13219 | dwarf2_start_subfile (char *filename, const char *dirname, |
13220 | const char *comp_dir) | |
c906108c | 13221 | { |
4f1520fb FR |
13222 | char *fullname; |
13223 | ||
13224 | /* While reading the DIEs, we call start_symtab(DW_AT_name, DW_AT_comp_dir). | |
13225 | `start_symtab' will always pass the contents of DW_AT_comp_dir as | |
13226 | second argument to start_subfile. To be consistent, we do the | |
13227 | same here. In order not to lose the line information directory, | |
13228 | we concatenate it to the filename when it makes sense. | |
13229 | Note that the Dwarf3 standard says (speaking of filenames in line | |
13230 | information): ``The directory index is ignored for file names | |
13231 | that represent full path names''. Thus ignoring dirname in the | |
13232 | `else' branch below isn't an issue. */ | |
c906108c | 13233 | |
d5166ae1 | 13234 | if (!IS_ABSOLUTE_PATH (filename) && dirname != NULL) |
4f1520fb FR |
13235 | fullname = concat (dirname, SLASH_STRING, filename, (char *)NULL); |
13236 | else | |
13237 | fullname = filename; | |
c906108c | 13238 | |
4f1520fb FR |
13239 | start_subfile (fullname, comp_dir); |
13240 | ||
13241 | if (fullname != filename) | |
13242 | xfree (fullname); | |
c906108c SS |
13243 | } |
13244 | ||
4c2df51b DJ |
13245 | static void |
13246 | var_decode_location (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 13247 | struct dwarf2_cu *cu) |
4c2df51b | 13248 | { |
e7c27a73 DJ |
13249 | struct objfile *objfile = cu->objfile; |
13250 | struct comp_unit_head *cu_header = &cu->header; | |
13251 | ||
4c2df51b DJ |
13252 | /* NOTE drow/2003-01-30: There used to be a comment and some special |
13253 | code here to turn a symbol with DW_AT_external and a | |
13254 | SYMBOL_VALUE_ADDRESS of 0 into a LOC_UNRESOLVED symbol. This was | |
13255 | necessary for platforms (maybe Alpha, certainly PowerPC GNU/Linux | |
13256 | with some versions of binutils) where shared libraries could have | |
13257 | relocations against symbols in their debug information - the | |
13258 | minimal symbol would have the right address, but the debug info | |
13259 | would not. It's no longer necessary, because we will explicitly | |
13260 | apply relocations when we read in the debug information now. */ | |
13261 | ||
13262 | /* A DW_AT_location attribute with no contents indicates that a | |
13263 | variable has been optimized away. */ | |
13264 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size == 0) | |
13265 | { | |
13266 | SYMBOL_CLASS (sym) = LOC_OPTIMIZED_OUT; | |
13267 | return; | |
13268 | } | |
13269 | ||
13270 | /* Handle one degenerate form of location expression specially, to | |
13271 | preserve GDB's previous behavior when section offsets are | |
3019eac3 DE |
13272 | specified. If this is just a DW_OP_addr or DW_OP_GNU_addr_index |
13273 | then mark this symbol as LOC_STATIC. */ | |
4c2df51b DJ |
13274 | |
13275 | if (attr_form_is_block (attr) | |
3019eac3 DE |
13276 | && ((DW_BLOCK (attr)->data[0] == DW_OP_addr |
13277 | && DW_BLOCK (attr)->size == 1 + cu_header->addr_size) | |
13278 | || (DW_BLOCK (attr)->data[0] == DW_OP_GNU_addr_index | |
13279 | && (DW_BLOCK (attr)->size | |
13280 | == 1 + leb128_size (&DW_BLOCK (attr)->data[1]))))) | |
4c2df51b | 13281 | { |
891d2f0b | 13282 | unsigned int dummy; |
4c2df51b | 13283 | |
3019eac3 DE |
13284 | if (DW_BLOCK (attr)->data[0] == DW_OP_addr) |
13285 | SYMBOL_VALUE_ADDRESS (sym) = | |
13286 | read_address (objfile->obfd, DW_BLOCK (attr)->data + 1, cu, &dummy); | |
13287 | else | |
13288 | SYMBOL_VALUE_ADDRESS (sym) = | |
13289 | read_addr_index_from_leb128 (cu, DW_BLOCK (attr)->data + 1, &dummy); | |
907fc202 | 13290 | SYMBOL_CLASS (sym) = LOC_STATIC; |
4c2df51b DJ |
13291 | fixup_symbol_section (sym, objfile); |
13292 | SYMBOL_VALUE_ADDRESS (sym) += ANOFFSET (objfile->section_offsets, | |
13293 | SYMBOL_SECTION (sym)); | |
4c2df51b DJ |
13294 | return; |
13295 | } | |
13296 | ||
13297 | /* NOTE drow/2002-01-30: It might be worthwhile to have a static | |
13298 | expression evaluator, and use LOC_COMPUTED only when necessary | |
13299 | (i.e. when the value of a register or memory location is | |
13300 | referenced, or a thread-local block, etc.). Then again, it might | |
13301 | not be worthwhile. I'm assuming that it isn't unless performance | |
13302 | or memory numbers show me otherwise. */ | |
13303 | ||
e7c27a73 | 13304 | dwarf2_symbol_mark_computed (attr, sym, cu); |
4c2df51b | 13305 | SYMBOL_CLASS (sym) = LOC_COMPUTED; |
8be455d7 JK |
13306 | |
13307 | if (SYMBOL_COMPUTED_OPS (sym) == &dwarf2_loclist_funcs) | |
13308 | cu->has_loclist = 1; | |
4c2df51b DJ |
13309 | } |
13310 | ||
c906108c SS |
13311 | /* Given a pointer to a DWARF information entry, figure out if we need |
13312 | to make a symbol table entry for it, and if so, create a new entry | |
13313 | and return a pointer to it. | |
13314 | If TYPE is NULL, determine symbol type from the die, otherwise | |
34eaf542 TT |
13315 | used the passed type. |
13316 | If SPACE is not NULL, use it to hold the new symbol. If it is | |
13317 | NULL, allocate a new symbol on the objfile's obstack. */ | |
c906108c SS |
13318 | |
13319 | static struct symbol * | |
34eaf542 TT |
13320 | new_symbol_full (struct die_info *die, struct type *type, struct dwarf2_cu *cu, |
13321 | struct symbol *space) | |
c906108c | 13322 | { |
e7c27a73 | 13323 | struct objfile *objfile = cu->objfile; |
c906108c SS |
13324 | struct symbol *sym = NULL; |
13325 | char *name; | |
13326 | struct attribute *attr = NULL; | |
13327 | struct attribute *attr2 = NULL; | |
e142c38c | 13328 | CORE_ADDR baseaddr; |
e37fd15a SW |
13329 | struct pending **list_to_add = NULL; |
13330 | ||
edb3359d | 13331 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
e142c38c DJ |
13332 | |
13333 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 13334 | |
94af9270 | 13335 | name = dwarf2_name (die, cu); |
c906108c SS |
13336 | if (name) |
13337 | { | |
94af9270 | 13338 | const char *linkagename; |
34eaf542 | 13339 | int suppress_add = 0; |
94af9270 | 13340 | |
34eaf542 TT |
13341 | if (space) |
13342 | sym = space; | |
13343 | else | |
13344 | sym = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct symbol); | |
c906108c | 13345 | OBJSTAT (objfile, n_syms++); |
2de7ced7 DJ |
13346 | |
13347 | /* Cache this symbol's name and the name's demangled form (if any). */ | |
33e5013e | 13348 | SYMBOL_SET_LANGUAGE (sym, cu->language); |
94af9270 KS |
13349 | linkagename = dwarf2_physname (name, die, cu); |
13350 | SYMBOL_SET_NAMES (sym, linkagename, strlen (linkagename), 0, objfile); | |
c906108c | 13351 | |
f55ee35c JK |
13352 | /* Fortran does not have mangling standard and the mangling does differ |
13353 | between gfortran, iFort etc. */ | |
13354 | if (cu->language == language_fortran | |
b250c185 | 13355 | && symbol_get_demangled_name (&(sym->ginfo)) == NULL) |
29df156d SW |
13356 | symbol_set_demangled_name (&(sym->ginfo), |
13357 | (char *) dwarf2_full_name (name, die, cu), | |
13358 | NULL); | |
f55ee35c | 13359 | |
c906108c | 13360 | /* Default assumptions. |
c5aa993b | 13361 | Use the passed type or decode it from the die. */ |
176620f1 | 13362 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
875dc2fc | 13363 | SYMBOL_CLASS (sym) = LOC_OPTIMIZED_OUT; |
c906108c SS |
13364 | if (type != NULL) |
13365 | SYMBOL_TYPE (sym) = type; | |
13366 | else | |
e7c27a73 | 13367 | SYMBOL_TYPE (sym) = die_type (die, cu); |
edb3359d DJ |
13368 | attr = dwarf2_attr (die, |
13369 | inlined_func ? DW_AT_call_line : DW_AT_decl_line, | |
13370 | cu); | |
c906108c SS |
13371 | if (attr) |
13372 | { | |
13373 | SYMBOL_LINE (sym) = DW_UNSND (attr); | |
13374 | } | |
cb1df416 | 13375 | |
edb3359d DJ |
13376 | attr = dwarf2_attr (die, |
13377 | inlined_func ? DW_AT_call_file : DW_AT_decl_file, | |
13378 | cu); | |
cb1df416 DJ |
13379 | if (attr) |
13380 | { | |
13381 | int file_index = DW_UNSND (attr); | |
9a619af0 | 13382 | |
cb1df416 DJ |
13383 | if (cu->line_header == NULL |
13384 | || file_index > cu->line_header->num_file_names) | |
13385 | complaint (&symfile_complaints, | |
13386 | _("file index out of range")); | |
1c3d648d | 13387 | else if (file_index > 0) |
cb1df416 DJ |
13388 | { |
13389 | struct file_entry *fe; | |
9a619af0 | 13390 | |
cb1df416 DJ |
13391 | fe = &cu->line_header->file_names[file_index - 1]; |
13392 | SYMBOL_SYMTAB (sym) = fe->symtab; | |
13393 | } | |
13394 | } | |
13395 | ||
c906108c SS |
13396 | switch (die->tag) |
13397 | { | |
13398 | case DW_TAG_label: | |
e142c38c | 13399 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
c906108c SS |
13400 | if (attr) |
13401 | { | |
13402 | SYMBOL_VALUE_ADDRESS (sym) = DW_ADDR (attr) + baseaddr; | |
13403 | } | |
0f5238ed TT |
13404 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_core_addr; |
13405 | SYMBOL_DOMAIN (sym) = LABEL_DOMAIN; | |
c906108c | 13406 | SYMBOL_CLASS (sym) = LOC_LABEL; |
0f5238ed | 13407 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
13408 | break; |
13409 | case DW_TAG_subprogram: | |
13410 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
13411 | finish_block. */ | |
13412 | SYMBOL_CLASS (sym) = LOC_BLOCK; | |
e142c38c | 13413 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
2cfa0c8d JB |
13414 | if ((attr2 && (DW_UNSND (attr2) != 0)) |
13415 | || cu->language == language_ada) | |
c906108c | 13416 | { |
2cfa0c8d JB |
13417 | /* Subprograms marked external are stored as a global symbol. |
13418 | Ada subprograms, whether marked external or not, are always | |
13419 | stored as a global symbol, because we want to be able to | |
13420 | access them globally. For instance, we want to be able | |
13421 | to break on a nested subprogram without having to | |
13422 | specify the context. */ | |
e37fd15a | 13423 | list_to_add = &global_symbols; |
c906108c SS |
13424 | } |
13425 | else | |
13426 | { | |
e37fd15a | 13427 | list_to_add = cu->list_in_scope; |
c906108c SS |
13428 | } |
13429 | break; | |
edb3359d DJ |
13430 | case DW_TAG_inlined_subroutine: |
13431 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
13432 | finish_block. */ | |
13433 | SYMBOL_CLASS (sym) = LOC_BLOCK; | |
13434 | SYMBOL_INLINED (sym) = 1; | |
481860b3 | 13435 | list_to_add = cu->list_in_scope; |
edb3359d | 13436 | break; |
34eaf542 TT |
13437 | case DW_TAG_template_value_param: |
13438 | suppress_add = 1; | |
13439 | /* Fall through. */ | |
72929c62 | 13440 | case DW_TAG_constant: |
c906108c | 13441 | case DW_TAG_variable: |
254e6b9e | 13442 | case DW_TAG_member: |
0963b4bd MS |
13443 | /* Compilation with minimal debug info may result in |
13444 | variables with missing type entries. Change the | |
13445 | misleading `void' type to something sensible. */ | |
c906108c | 13446 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_VOID) |
64c50499 | 13447 | SYMBOL_TYPE (sym) |
46bf5051 | 13448 | = objfile_type (objfile)->nodebug_data_symbol; |
64c50499 | 13449 | |
e142c38c | 13450 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
254e6b9e DE |
13451 | /* In the case of DW_TAG_member, we should only be called for |
13452 | static const members. */ | |
13453 | if (die->tag == DW_TAG_member) | |
13454 | { | |
3863f96c DE |
13455 | /* dwarf2_add_field uses die_is_declaration, |
13456 | so we do the same. */ | |
254e6b9e DE |
13457 | gdb_assert (die_is_declaration (die, cu)); |
13458 | gdb_assert (attr); | |
13459 | } | |
c906108c SS |
13460 | if (attr) |
13461 | { | |
e7c27a73 | 13462 | dwarf2_const_value (attr, sym, cu); |
e142c38c | 13463 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
e37fd15a | 13464 | if (!suppress_add) |
34eaf542 TT |
13465 | { |
13466 | if (attr2 && (DW_UNSND (attr2) != 0)) | |
e37fd15a | 13467 | list_to_add = &global_symbols; |
34eaf542 | 13468 | else |
e37fd15a | 13469 | list_to_add = cu->list_in_scope; |
34eaf542 | 13470 | } |
c906108c SS |
13471 | break; |
13472 | } | |
e142c38c | 13473 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
13474 | if (attr) |
13475 | { | |
e7c27a73 | 13476 | var_decode_location (attr, sym, cu); |
e142c38c | 13477 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
caac4577 JG |
13478 | if (SYMBOL_CLASS (sym) == LOC_STATIC |
13479 | && SYMBOL_VALUE_ADDRESS (sym) == 0 | |
13480 | && !dwarf2_per_objfile->has_section_at_zero) | |
13481 | { | |
13482 | /* When a static variable is eliminated by the linker, | |
13483 | the corresponding debug information is not stripped | |
13484 | out, but the variable address is set to null; | |
13485 | do not add such variables into symbol table. */ | |
13486 | } | |
13487 | else if (attr2 && (DW_UNSND (attr2) != 0)) | |
1c809c68 | 13488 | { |
f55ee35c JK |
13489 | /* Workaround gfortran PR debug/40040 - it uses |
13490 | DW_AT_location for variables in -fPIC libraries which may | |
13491 | get overriden by other libraries/executable and get | |
13492 | a different address. Resolve it by the minimal symbol | |
13493 | which may come from inferior's executable using copy | |
13494 | relocation. Make this workaround only for gfortran as for | |
13495 | other compilers GDB cannot guess the minimal symbol | |
13496 | Fortran mangling kind. */ | |
13497 | if (cu->language == language_fortran && die->parent | |
13498 | && die->parent->tag == DW_TAG_module | |
13499 | && cu->producer | |
13500 | && strncmp (cu->producer, "GNU Fortran ", 12) == 0) | |
13501 | SYMBOL_CLASS (sym) = LOC_UNRESOLVED; | |
13502 | ||
1c809c68 TT |
13503 | /* A variable with DW_AT_external is never static, |
13504 | but it may be block-scoped. */ | |
13505 | list_to_add = (cu->list_in_scope == &file_symbols | |
13506 | ? &global_symbols : cu->list_in_scope); | |
1c809c68 | 13507 | } |
c906108c | 13508 | else |
e37fd15a | 13509 | list_to_add = cu->list_in_scope; |
c906108c SS |
13510 | } |
13511 | else | |
13512 | { | |
13513 | /* We do not know the address of this symbol. | |
c5aa993b JM |
13514 | If it is an external symbol and we have type information |
13515 | for it, enter the symbol as a LOC_UNRESOLVED symbol. | |
13516 | The address of the variable will then be determined from | |
13517 | the minimal symbol table whenever the variable is | |
13518 | referenced. */ | |
e142c38c | 13519 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
c906108c | 13520 | if (attr2 && (DW_UNSND (attr2) != 0) |
e142c38c | 13521 | && dwarf2_attr (die, DW_AT_type, cu) != NULL) |
c906108c | 13522 | { |
0fe7935b DJ |
13523 | /* A variable with DW_AT_external is never static, but it |
13524 | may be block-scoped. */ | |
13525 | list_to_add = (cu->list_in_scope == &file_symbols | |
13526 | ? &global_symbols : cu->list_in_scope); | |
13527 | ||
c906108c | 13528 | SYMBOL_CLASS (sym) = LOC_UNRESOLVED; |
c906108c | 13529 | } |
442ddf59 JK |
13530 | else if (!die_is_declaration (die, cu)) |
13531 | { | |
13532 | /* Use the default LOC_OPTIMIZED_OUT class. */ | |
13533 | gdb_assert (SYMBOL_CLASS (sym) == LOC_OPTIMIZED_OUT); | |
e37fd15a SW |
13534 | if (!suppress_add) |
13535 | list_to_add = cu->list_in_scope; | |
442ddf59 | 13536 | } |
c906108c SS |
13537 | } |
13538 | break; | |
13539 | case DW_TAG_formal_parameter: | |
edb3359d DJ |
13540 | /* If we are inside a function, mark this as an argument. If |
13541 | not, we might be looking at an argument to an inlined function | |
13542 | when we do not have enough information to show inlined frames; | |
13543 | pretend it's a local variable in that case so that the user can | |
13544 | still see it. */ | |
13545 | if (context_stack_depth > 0 | |
13546 | && context_stack[context_stack_depth - 1].name != NULL) | |
13547 | SYMBOL_IS_ARGUMENT (sym) = 1; | |
e142c38c | 13548 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
13549 | if (attr) |
13550 | { | |
e7c27a73 | 13551 | var_decode_location (attr, sym, cu); |
c906108c | 13552 | } |
e142c38c | 13553 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
13554 | if (attr) |
13555 | { | |
e7c27a73 | 13556 | dwarf2_const_value (attr, sym, cu); |
c906108c | 13557 | } |
f346a30d | 13558 | |
e37fd15a | 13559 | list_to_add = cu->list_in_scope; |
c906108c SS |
13560 | break; |
13561 | case DW_TAG_unspecified_parameters: | |
13562 | /* From varargs functions; gdb doesn't seem to have any | |
13563 | interest in this information, so just ignore it for now. | |
13564 | (FIXME?) */ | |
13565 | break; | |
34eaf542 TT |
13566 | case DW_TAG_template_type_param: |
13567 | suppress_add = 1; | |
13568 | /* Fall through. */ | |
c906108c | 13569 | case DW_TAG_class_type: |
680b30c7 | 13570 | case DW_TAG_interface_type: |
c906108c SS |
13571 | case DW_TAG_structure_type: |
13572 | case DW_TAG_union_type: | |
72019c9c | 13573 | case DW_TAG_set_type: |
c906108c SS |
13574 | case DW_TAG_enumeration_type: |
13575 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
176620f1 | 13576 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c906108c | 13577 | |
63d06c5c | 13578 | { |
987504bb | 13579 | /* NOTE: carlton/2003-11-10: C++ and Java class symbols shouldn't |
63d06c5c DC |
13580 | really ever be static objects: otherwise, if you try |
13581 | to, say, break of a class's method and you're in a file | |
13582 | which doesn't mention that class, it won't work unless | |
13583 | the check for all static symbols in lookup_symbol_aux | |
13584 | saves you. See the OtherFileClass tests in | |
13585 | gdb.c++/namespace.exp. */ | |
13586 | ||
e37fd15a | 13587 | if (!suppress_add) |
34eaf542 | 13588 | { |
34eaf542 TT |
13589 | list_to_add = (cu->list_in_scope == &file_symbols |
13590 | && (cu->language == language_cplus | |
13591 | || cu->language == language_java) | |
13592 | ? &global_symbols : cu->list_in_scope); | |
63d06c5c | 13593 | |
64382290 TT |
13594 | /* The semantics of C++ state that "struct foo { |
13595 | ... }" also defines a typedef for "foo". A Java | |
13596 | class declaration also defines a typedef for the | |
13597 | class. */ | |
13598 | if (cu->language == language_cplus | |
13599 | || cu->language == language_java | |
13600 | || cu->language == language_ada) | |
13601 | { | |
13602 | /* The symbol's name is already allocated along | |
13603 | with this objfile, so we don't need to | |
13604 | duplicate it for the type. */ | |
13605 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) | |
13606 | TYPE_NAME (SYMBOL_TYPE (sym)) = SYMBOL_SEARCH_NAME (sym); | |
13607 | } | |
63d06c5c DC |
13608 | } |
13609 | } | |
c906108c SS |
13610 | break; |
13611 | case DW_TAG_typedef: | |
63d06c5c DC |
13612 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; |
13613 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; | |
e37fd15a | 13614 | list_to_add = cu->list_in_scope; |
63d06c5c | 13615 | break; |
c906108c | 13616 | case DW_TAG_base_type: |
a02abb62 | 13617 | case DW_TAG_subrange_type: |
c906108c | 13618 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; |
176620f1 | 13619 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 13620 | list_to_add = cu->list_in_scope; |
c906108c SS |
13621 | break; |
13622 | case DW_TAG_enumerator: | |
e142c38c | 13623 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
13624 | if (attr) |
13625 | { | |
e7c27a73 | 13626 | dwarf2_const_value (attr, sym, cu); |
c906108c | 13627 | } |
63d06c5c DC |
13628 | { |
13629 | /* NOTE: carlton/2003-11-10: See comment above in the | |
13630 | DW_TAG_class_type, etc. block. */ | |
13631 | ||
e142c38c | 13632 | list_to_add = (cu->list_in_scope == &file_symbols |
987504bb JJ |
13633 | && (cu->language == language_cplus |
13634 | || cu->language == language_java) | |
e142c38c | 13635 | ? &global_symbols : cu->list_in_scope); |
63d06c5c | 13636 | } |
c906108c | 13637 | break; |
5c4e30ca DC |
13638 | case DW_TAG_namespace: |
13639 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
e37fd15a | 13640 | list_to_add = &global_symbols; |
5c4e30ca | 13641 | break; |
c906108c SS |
13642 | default: |
13643 | /* Not a tag we recognize. Hopefully we aren't processing | |
13644 | trash data, but since we must specifically ignore things | |
13645 | we don't recognize, there is nothing else we should do at | |
0963b4bd | 13646 | this point. */ |
e2e0b3e5 | 13647 | complaint (&symfile_complaints, _("unsupported tag: '%s'"), |
4d3c2250 | 13648 | dwarf_tag_name (die->tag)); |
c906108c SS |
13649 | break; |
13650 | } | |
df8a16a1 | 13651 | |
e37fd15a SW |
13652 | if (suppress_add) |
13653 | { | |
13654 | sym->hash_next = objfile->template_symbols; | |
13655 | objfile->template_symbols = sym; | |
13656 | list_to_add = NULL; | |
13657 | } | |
13658 | ||
13659 | if (list_to_add != NULL) | |
13660 | add_symbol_to_list (sym, list_to_add); | |
13661 | ||
df8a16a1 DJ |
13662 | /* For the benefit of old versions of GCC, check for anonymous |
13663 | namespaces based on the demangled name. */ | |
13664 | if (!processing_has_namespace_info | |
94af9270 | 13665 | && cu->language == language_cplus) |
a10964d1 | 13666 | cp_scan_for_anonymous_namespaces (sym, objfile); |
c906108c SS |
13667 | } |
13668 | return (sym); | |
13669 | } | |
13670 | ||
34eaf542 TT |
13671 | /* A wrapper for new_symbol_full that always allocates a new symbol. */ |
13672 | ||
13673 | static struct symbol * | |
13674 | new_symbol (struct die_info *die, struct type *type, struct dwarf2_cu *cu) | |
13675 | { | |
13676 | return new_symbol_full (die, type, cu, NULL); | |
13677 | } | |
13678 | ||
98bfdba5 PA |
13679 | /* Given an attr with a DW_FORM_dataN value in host byte order, |
13680 | zero-extend it as appropriate for the symbol's type. The DWARF | |
13681 | standard (v4) is not entirely clear about the meaning of using | |
13682 | DW_FORM_dataN for a constant with a signed type, where the type is | |
13683 | wider than the data. The conclusion of a discussion on the DWARF | |
13684 | list was that this is unspecified. We choose to always zero-extend | |
13685 | because that is the interpretation long in use by GCC. */ | |
c906108c | 13686 | |
98bfdba5 PA |
13687 | static gdb_byte * |
13688 | dwarf2_const_value_data (struct attribute *attr, struct type *type, | |
13689 | const char *name, struct obstack *obstack, | |
12df843f | 13690 | struct dwarf2_cu *cu, LONGEST *value, int bits) |
c906108c | 13691 | { |
e7c27a73 | 13692 | struct objfile *objfile = cu->objfile; |
e17a4113 UW |
13693 | enum bfd_endian byte_order = bfd_big_endian (objfile->obfd) ? |
13694 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE; | |
98bfdba5 PA |
13695 | LONGEST l = DW_UNSND (attr); |
13696 | ||
13697 | if (bits < sizeof (*value) * 8) | |
13698 | { | |
13699 | l &= ((LONGEST) 1 << bits) - 1; | |
13700 | *value = l; | |
13701 | } | |
13702 | else if (bits == sizeof (*value) * 8) | |
13703 | *value = l; | |
13704 | else | |
13705 | { | |
13706 | gdb_byte *bytes = obstack_alloc (obstack, bits / 8); | |
13707 | store_unsigned_integer (bytes, bits / 8, byte_order, l); | |
13708 | return bytes; | |
13709 | } | |
13710 | ||
13711 | return NULL; | |
13712 | } | |
13713 | ||
13714 | /* Read a constant value from an attribute. Either set *VALUE, or if | |
13715 | the value does not fit in *VALUE, set *BYTES - either already | |
13716 | allocated on the objfile obstack, or newly allocated on OBSTACK, | |
13717 | or, set *BATON, if we translated the constant to a location | |
13718 | expression. */ | |
13719 | ||
13720 | static void | |
13721 | dwarf2_const_value_attr (struct attribute *attr, struct type *type, | |
13722 | const char *name, struct obstack *obstack, | |
13723 | struct dwarf2_cu *cu, | |
12df843f | 13724 | LONGEST *value, gdb_byte **bytes, |
98bfdba5 PA |
13725 | struct dwarf2_locexpr_baton **baton) |
13726 | { | |
13727 | struct objfile *objfile = cu->objfile; | |
13728 | struct comp_unit_head *cu_header = &cu->header; | |
c906108c | 13729 | struct dwarf_block *blk; |
98bfdba5 PA |
13730 | enum bfd_endian byte_order = (bfd_big_endian (objfile->obfd) ? |
13731 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); | |
13732 | ||
13733 | *value = 0; | |
13734 | *bytes = NULL; | |
13735 | *baton = NULL; | |
c906108c SS |
13736 | |
13737 | switch (attr->form) | |
13738 | { | |
13739 | case DW_FORM_addr: | |
3019eac3 | 13740 | case DW_FORM_GNU_addr_index: |
ac56253d | 13741 | { |
ac56253d TT |
13742 | gdb_byte *data; |
13743 | ||
98bfdba5 PA |
13744 | if (TYPE_LENGTH (type) != cu_header->addr_size) |
13745 | dwarf2_const_value_length_mismatch_complaint (name, | |
ac56253d | 13746 | cu_header->addr_size, |
98bfdba5 | 13747 | TYPE_LENGTH (type)); |
ac56253d TT |
13748 | /* Symbols of this form are reasonably rare, so we just |
13749 | piggyback on the existing location code rather than writing | |
13750 | a new implementation of symbol_computed_ops. */ | |
98bfdba5 PA |
13751 | *baton = obstack_alloc (&objfile->objfile_obstack, |
13752 | sizeof (struct dwarf2_locexpr_baton)); | |
13753 | (*baton)->per_cu = cu->per_cu; | |
13754 | gdb_assert ((*baton)->per_cu); | |
ac56253d | 13755 | |
98bfdba5 PA |
13756 | (*baton)->size = 2 + cu_header->addr_size; |
13757 | data = obstack_alloc (&objfile->objfile_obstack, (*baton)->size); | |
13758 | (*baton)->data = data; | |
ac56253d TT |
13759 | |
13760 | data[0] = DW_OP_addr; | |
13761 | store_unsigned_integer (&data[1], cu_header->addr_size, | |
13762 | byte_order, DW_ADDR (attr)); | |
13763 | data[cu_header->addr_size + 1] = DW_OP_stack_value; | |
ac56253d | 13764 | } |
c906108c | 13765 | break; |
4ac36638 | 13766 | case DW_FORM_string: |
93b5768b | 13767 | case DW_FORM_strp: |
3019eac3 | 13768 | case DW_FORM_GNU_str_index: |
98bfdba5 PA |
13769 | /* DW_STRING is already allocated on the objfile obstack, point |
13770 | directly to it. */ | |
13771 | *bytes = (gdb_byte *) DW_STRING (attr); | |
93b5768b | 13772 | break; |
c906108c SS |
13773 | case DW_FORM_block1: |
13774 | case DW_FORM_block2: | |
13775 | case DW_FORM_block4: | |
13776 | case DW_FORM_block: | |
2dc7f7b3 | 13777 | case DW_FORM_exprloc: |
c906108c | 13778 | blk = DW_BLOCK (attr); |
98bfdba5 PA |
13779 | if (TYPE_LENGTH (type) != blk->size) |
13780 | dwarf2_const_value_length_mismatch_complaint (name, blk->size, | |
13781 | TYPE_LENGTH (type)); | |
13782 | *bytes = blk->data; | |
c906108c | 13783 | break; |
2df3850c JM |
13784 | |
13785 | /* The DW_AT_const_value attributes are supposed to carry the | |
13786 | symbol's value "represented as it would be on the target | |
13787 | architecture." By the time we get here, it's already been | |
13788 | converted to host endianness, so we just need to sign- or | |
13789 | zero-extend it as appropriate. */ | |
13790 | case DW_FORM_data1: | |
3e43a32a MS |
13791 | *bytes = dwarf2_const_value_data (attr, type, name, |
13792 | obstack, cu, value, 8); | |
2df3850c | 13793 | break; |
c906108c | 13794 | case DW_FORM_data2: |
3e43a32a MS |
13795 | *bytes = dwarf2_const_value_data (attr, type, name, |
13796 | obstack, cu, value, 16); | |
2df3850c | 13797 | break; |
c906108c | 13798 | case DW_FORM_data4: |
3e43a32a MS |
13799 | *bytes = dwarf2_const_value_data (attr, type, name, |
13800 | obstack, cu, value, 32); | |
2df3850c | 13801 | break; |
c906108c | 13802 | case DW_FORM_data8: |
3e43a32a MS |
13803 | *bytes = dwarf2_const_value_data (attr, type, name, |
13804 | obstack, cu, value, 64); | |
2df3850c JM |
13805 | break; |
13806 | ||
c906108c | 13807 | case DW_FORM_sdata: |
98bfdba5 | 13808 | *value = DW_SND (attr); |
2df3850c JM |
13809 | break; |
13810 | ||
c906108c | 13811 | case DW_FORM_udata: |
98bfdba5 | 13812 | *value = DW_UNSND (attr); |
c906108c | 13813 | break; |
2df3850c | 13814 | |
c906108c | 13815 | default: |
4d3c2250 | 13816 | complaint (&symfile_complaints, |
e2e0b3e5 | 13817 | _("unsupported const value attribute form: '%s'"), |
4d3c2250 | 13818 | dwarf_form_name (attr->form)); |
98bfdba5 | 13819 | *value = 0; |
c906108c SS |
13820 | break; |
13821 | } | |
13822 | } | |
13823 | ||
2df3850c | 13824 | |
98bfdba5 PA |
13825 | /* Copy constant value from an attribute to a symbol. */ |
13826 | ||
2df3850c | 13827 | static void |
98bfdba5 PA |
13828 | dwarf2_const_value (struct attribute *attr, struct symbol *sym, |
13829 | struct dwarf2_cu *cu) | |
2df3850c | 13830 | { |
98bfdba5 PA |
13831 | struct objfile *objfile = cu->objfile; |
13832 | struct comp_unit_head *cu_header = &cu->header; | |
12df843f | 13833 | LONGEST value; |
98bfdba5 PA |
13834 | gdb_byte *bytes; |
13835 | struct dwarf2_locexpr_baton *baton; | |
2df3850c | 13836 | |
98bfdba5 PA |
13837 | dwarf2_const_value_attr (attr, SYMBOL_TYPE (sym), |
13838 | SYMBOL_PRINT_NAME (sym), | |
13839 | &objfile->objfile_obstack, cu, | |
13840 | &value, &bytes, &baton); | |
2df3850c | 13841 | |
98bfdba5 PA |
13842 | if (baton != NULL) |
13843 | { | |
13844 | SYMBOL_COMPUTED_OPS (sym) = &dwarf2_locexpr_funcs; | |
13845 | SYMBOL_LOCATION_BATON (sym) = baton; | |
13846 | SYMBOL_CLASS (sym) = LOC_COMPUTED; | |
13847 | } | |
13848 | else if (bytes != NULL) | |
13849 | { | |
13850 | SYMBOL_VALUE_BYTES (sym) = bytes; | |
13851 | SYMBOL_CLASS (sym) = LOC_CONST_BYTES; | |
13852 | } | |
13853 | else | |
13854 | { | |
13855 | SYMBOL_VALUE (sym) = value; | |
13856 | SYMBOL_CLASS (sym) = LOC_CONST; | |
13857 | } | |
2df3850c JM |
13858 | } |
13859 | ||
c906108c SS |
13860 | /* Return the type of the die in question using its DW_AT_type attribute. */ |
13861 | ||
13862 | static struct type * | |
e7c27a73 | 13863 | die_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13864 | { |
c906108c | 13865 | struct attribute *type_attr; |
c906108c | 13866 | |
e142c38c | 13867 | type_attr = dwarf2_attr (die, DW_AT_type, cu); |
c906108c SS |
13868 | if (!type_attr) |
13869 | { | |
13870 | /* A missing DW_AT_type represents a void type. */ | |
46bf5051 | 13871 | return objfile_type (cu->objfile)->builtin_void; |
c906108c | 13872 | } |
348e048f | 13873 | |
673bfd45 | 13874 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
13875 | } |
13876 | ||
b4ba55a1 JB |
13877 | /* True iff CU's producer generates GNAT Ada auxiliary information |
13878 | that allows to find parallel types through that information instead | |
13879 | of having to do expensive parallel lookups by type name. */ | |
13880 | ||
13881 | static int | |
13882 | need_gnat_info (struct dwarf2_cu *cu) | |
13883 | { | |
13884 | /* FIXME: brobecker/2010-10-12: As of now, only the AdaCore version | |
13885 | of GNAT produces this auxiliary information, without any indication | |
13886 | that it is produced. Part of enhancing the FSF version of GNAT | |
13887 | to produce that information will be to put in place an indicator | |
13888 | that we can use in order to determine whether the descriptive type | |
13889 | info is available or not. One suggestion that has been made is | |
13890 | to use a new attribute, attached to the CU die. For now, assume | |
13891 | that the descriptive type info is not available. */ | |
13892 | return 0; | |
13893 | } | |
13894 | ||
b4ba55a1 JB |
13895 | /* Return the auxiliary type of the die in question using its |
13896 | DW_AT_GNAT_descriptive_type attribute. Returns NULL if the | |
13897 | attribute is not present. */ | |
13898 | ||
13899 | static struct type * | |
13900 | die_descriptive_type (struct die_info *die, struct dwarf2_cu *cu) | |
13901 | { | |
b4ba55a1 | 13902 | struct attribute *type_attr; |
b4ba55a1 JB |
13903 | |
13904 | type_attr = dwarf2_attr (die, DW_AT_GNAT_descriptive_type, cu); | |
13905 | if (!type_attr) | |
13906 | return NULL; | |
13907 | ||
673bfd45 | 13908 | return lookup_die_type (die, type_attr, cu); |
b4ba55a1 JB |
13909 | } |
13910 | ||
13911 | /* If DIE has a descriptive_type attribute, then set the TYPE's | |
13912 | descriptive type accordingly. */ | |
13913 | ||
13914 | static void | |
13915 | set_descriptive_type (struct type *type, struct die_info *die, | |
13916 | struct dwarf2_cu *cu) | |
13917 | { | |
13918 | struct type *descriptive_type = die_descriptive_type (die, cu); | |
13919 | ||
13920 | if (descriptive_type) | |
13921 | { | |
13922 | ALLOCATE_GNAT_AUX_TYPE (type); | |
13923 | TYPE_DESCRIPTIVE_TYPE (type) = descriptive_type; | |
13924 | } | |
13925 | } | |
13926 | ||
c906108c SS |
13927 | /* Return the containing type of the die in question using its |
13928 | DW_AT_containing_type attribute. */ | |
13929 | ||
13930 | static struct type * | |
e7c27a73 | 13931 | die_containing_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13932 | { |
c906108c | 13933 | struct attribute *type_attr; |
c906108c | 13934 | |
e142c38c | 13935 | type_attr = dwarf2_attr (die, DW_AT_containing_type, cu); |
33ac96f0 JK |
13936 | if (!type_attr) |
13937 | error (_("Dwarf Error: Problem turning containing type into gdb type " | |
13938 | "[in module %s]"), cu->objfile->name); | |
13939 | ||
673bfd45 | 13940 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
13941 | } |
13942 | ||
673bfd45 DE |
13943 | /* Look up the type of DIE in CU using its type attribute ATTR. |
13944 | If there is no type substitute an error marker. */ | |
13945 | ||
c906108c | 13946 | static struct type * |
673bfd45 DE |
13947 | lookup_die_type (struct die_info *die, struct attribute *attr, |
13948 | struct dwarf2_cu *cu) | |
c906108c | 13949 | { |
bb5ed363 | 13950 | struct objfile *objfile = cu->objfile; |
f792889a DJ |
13951 | struct type *this_type; |
13952 | ||
673bfd45 DE |
13953 | /* First see if we have it cached. */ |
13954 | ||
13955 | if (is_ref_attr (attr)) | |
13956 | { | |
b64f50a1 | 13957 | sect_offset offset = dwarf2_get_ref_die_offset (attr); |
673bfd45 DE |
13958 | |
13959 | this_type = get_die_type_at_offset (offset, cu->per_cu); | |
13960 | } | |
55f1336d | 13961 | else if (attr->form == DW_FORM_ref_sig8) |
673bfd45 DE |
13962 | { |
13963 | struct signatured_type *sig_type = DW_SIGNATURED_TYPE (attr); | |
673bfd45 DE |
13964 | |
13965 | /* sig_type will be NULL if the signatured type is missing from | |
13966 | the debug info. */ | |
13967 | if (sig_type == NULL) | |
13968 | error (_("Dwarf Error: Cannot find signatured DIE referenced from DIE " | |
13969 | "at 0x%x [in module %s]"), | |
b64f50a1 | 13970 | die->offset.sect_off, objfile->name); |
673bfd45 | 13971 | |
3019eac3 DE |
13972 | gdb_assert (sig_type->per_cu.is_debug_types); |
13973 | /* If we haven't filled in type_offset_in_section yet, then we | |
13974 | haven't read the type in yet. */ | |
13975 | this_type = NULL; | |
13976 | if (sig_type->type_offset_in_section.sect_off != 0) | |
13977 | { | |
13978 | this_type = | |
13979 | get_die_type_at_offset (sig_type->type_offset_in_section, | |
13980 | &sig_type->per_cu); | |
13981 | } | |
673bfd45 DE |
13982 | } |
13983 | else | |
13984 | { | |
13985 | dump_die_for_error (die); | |
13986 | error (_("Dwarf Error: Bad type attribute %s [in module %s]"), | |
bb5ed363 | 13987 | dwarf_attr_name (attr->name), objfile->name); |
673bfd45 DE |
13988 | } |
13989 | ||
13990 | /* If not cached we need to read it in. */ | |
13991 | ||
13992 | if (this_type == NULL) | |
13993 | { | |
13994 | struct die_info *type_die; | |
13995 | struct dwarf2_cu *type_cu = cu; | |
13996 | ||
13997 | type_die = follow_die_ref_or_sig (die, attr, &type_cu); | |
3019eac3 DE |
13998 | /* If we found the type now, it's probably because the type came |
13999 | from an inter-CU reference and the type's CU got expanded before | |
14000 | ours. */ | |
14001 | this_type = get_die_type (type_die, type_cu); | |
14002 | if (this_type == NULL) | |
14003 | this_type = read_type_die_1 (type_die, type_cu); | |
673bfd45 DE |
14004 | } |
14005 | ||
14006 | /* If we still don't have a type use an error marker. */ | |
14007 | ||
14008 | if (this_type == NULL) | |
c906108c | 14009 | { |
b00fdb78 TT |
14010 | char *message, *saved; |
14011 | ||
14012 | /* read_type_die already issued a complaint. */ | |
14013 | message = xstrprintf (_("<unknown type in %s, CU 0x%x, DIE 0x%x>"), | |
bb5ed363 | 14014 | objfile->name, |
b64f50a1 JK |
14015 | cu->header.offset.sect_off, |
14016 | die->offset.sect_off); | |
bb5ed363 | 14017 | saved = obstack_copy0 (&objfile->objfile_obstack, |
b00fdb78 TT |
14018 | message, strlen (message)); |
14019 | xfree (message); | |
14020 | ||
bb5ed363 | 14021 | this_type = init_type (TYPE_CODE_ERROR, 0, 0, saved, objfile); |
c906108c | 14022 | } |
673bfd45 | 14023 | |
f792889a | 14024 | return this_type; |
c906108c SS |
14025 | } |
14026 | ||
673bfd45 DE |
14027 | /* Return the type in DIE, CU. |
14028 | Returns NULL for invalid types. | |
14029 | ||
14030 | This first does a lookup in the appropriate type_hash table, | |
14031 | and only reads the die in if necessary. | |
14032 | ||
14033 | NOTE: This can be called when reading in partial or full symbols. */ | |
14034 | ||
f792889a | 14035 | static struct type * |
e7c27a73 | 14036 | read_type_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 14037 | { |
f792889a DJ |
14038 | struct type *this_type; |
14039 | ||
14040 | this_type = get_die_type (die, cu); | |
14041 | if (this_type) | |
14042 | return this_type; | |
14043 | ||
673bfd45 DE |
14044 | return read_type_die_1 (die, cu); |
14045 | } | |
14046 | ||
14047 | /* Read the type in DIE, CU. | |
14048 | Returns NULL for invalid types. */ | |
14049 | ||
14050 | static struct type * | |
14051 | read_type_die_1 (struct die_info *die, struct dwarf2_cu *cu) | |
14052 | { | |
14053 | struct type *this_type = NULL; | |
14054 | ||
c906108c SS |
14055 | switch (die->tag) |
14056 | { | |
14057 | case DW_TAG_class_type: | |
680b30c7 | 14058 | case DW_TAG_interface_type: |
c906108c SS |
14059 | case DW_TAG_structure_type: |
14060 | case DW_TAG_union_type: | |
f792889a | 14061 | this_type = read_structure_type (die, cu); |
c906108c SS |
14062 | break; |
14063 | case DW_TAG_enumeration_type: | |
f792889a | 14064 | this_type = read_enumeration_type (die, cu); |
c906108c SS |
14065 | break; |
14066 | case DW_TAG_subprogram: | |
14067 | case DW_TAG_subroutine_type: | |
edb3359d | 14068 | case DW_TAG_inlined_subroutine: |
f792889a | 14069 | this_type = read_subroutine_type (die, cu); |
c906108c SS |
14070 | break; |
14071 | case DW_TAG_array_type: | |
f792889a | 14072 | this_type = read_array_type (die, cu); |
c906108c | 14073 | break; |
72019c9c | 14074 | case DW_TAG_set_type: |
f792889a | 14075 | this_type = read_set_type (die, cu); |
72019c9c | 14076 | break; |
c906108c | 14077 | case DW_TAG_pointer_type: |
f792889a | 14078 | this_type = read_tag_pointer_type (die, cu); |
c906108c SS |
14079 | break; |
14080 | case DW_TAG_ptr_to_member_type: | |
f792889a | 14081 | this_type = read_tag_ptr_to_member_type (die, cu); |
c906108c SS |
14082 | break; |
14083 | case DW_TAG_reference_type: | |
f792889a | 14084 | this_type = read_tag_reference_type (die, cu); |
c906108c SS |
14085 | break; |
14086 | case DW_TAG_const_type: | |
f792889a | 14087 | this_type = read_tag_const_type (die, cu); |
c906108c SS |
14088 | break; |
14089 | case DW_TAG_volatile_type: | |
f792889a | 14090 | this_type = read_tag_volatile_type (die, cu); |
c906108c SS |
14091 | break; |
14092 | case DW_TAG_string_type: | |
f792889a | 14093 | this_type = read_tag_string_type (die, cu); |
c906108c SS |
14094 | break; |
14095 | case DW_TAG_typedef: | |
f792889a | 14096 | this_type = read_typedef (die, cu); |
c906108c | 14097 | break; |
a02abb62 | 14098 | case DW_TAG_subrange_type: |
f792889a | 14099 | this_type = read_subrange_type (die, cu); |
a02abb62 | 14100 | break; |
c906108c | 14101 | case DW_TAG_base_type: |
f792889a | 14102 | this_type = read_base_type (die, cu); |
c906108c | 14103 | break; |
81a17f79 | 14104 | case DW_TAG_unspecified_type: |
f792889a | 14105 | this_type = read_unspecified_type (die, cu); |
81a17f79 | 14106 | break; |
0114d602 DJ |
14107 | case DW_TAG_namespace: |
14108 | this_type = read_namespace_type (die, cu); | |
14109 | break; | |
f55ee35c JK |
14110 | case DW_TAG_module: |
14111 | this_type = read_module_type (die, cu); | |
14112 | break; | |
c906108c | 14113 | default: |
3e43a32a MS |
14114 | complaint (&symfile_complaints, |
14115 | _("unexpected tag in read_type_die: '%s'"), | |
4d3c2250 | 14116 | dwarf_tag_name (die->tag)); |
c906108c SS |
14117 | break; |
14118 | } | |
63d06c5c | 14119 | |
f792889a | 14120 | return this_type; |
63d06c5c DC |
14121 | } |
14122 | ||
abc72ce4 DE |
14123 | /* See if we can figure out if the class lives in a namespace. We do |
14124 | this by looking for a member function; its demangled name will | |
14125 | contain namespace info, if there is any. | |
14126 | Return the computed name or NULL. | |
14127 | Space for the result is allocated on the objfile's obstack. | |
14128 | This is the full-die version of guess_partial_die_structure_name. | |
14129 | In this case we know DIE has no useful parent. */ | |
14130 | ||
14131 | static char * | |
14132 | guess_full_die_structure_name (struct die_info *die, struct dwarf2_cu *cu) | |
14133 | { | |
14134 | struct die_info *spec_die; | |
14135 | struct dwarf2_cu *spec_cu; | |
14136 | struct die_info *child; | |
14137 | ||
14138 | spec_cu = cu; | |
14139 | spec_die = die_specification (die, &spec_cu); | |
14140 | if (spec_die != NULL) | |
14141 | { | |
14142 | die = spec_die; | |
14143 | cu = spec_cu; | |
14144 | } | |
14145 | ||
14146 | for (child = die->child; | |
14147 | child != NULL; | |
14148 | child = child->sibling) | |
14149 | { | |
14150 | if (child->tag == DW_TAG_subprogram) | |
14151 | { | |
14152 | struct attribute *attr; | |
14153 | ||
14154 | attr = dwarf2_attr (child, DW_AT_linkage_name, cu); | |
14155 | if (attr == NULL) | |
14156 | attr = dwarf2_attr (child, DW_AT_MIPS_linkage_name, cu); | |
14157 | if (attr != NULL) | |
14158 | { | |
14159 | char *actual_name | |
14160 | = language_class_name_from_physname (cu->language_defn, | |
14161 | DW_STRING (attr)); | |
14162 | char *name = NULL; | |
14163 | ||
14164 | if (actual_name != NULL) | |
14165 | { | |
14166 | char *die_name = dwarf2_name (die, cu); | |
14167 | ||
14168 | if (die_name != NULL | |
14169 | && strcmp (die_name, actual_name) != 0) | |
14170 | { | |
14171 | /* Strip off the class name from the full name. | |
14172 | We want the prefix. */ | |
14173 | int die_name_len = strlen (die_name); | |
14174 | int actual_name_len = strlen (actual_name); | |
14175 | ||
14176 | /* Test for '::' as a sanity check. */ | |
14177 | if (actual_name_len > die_name_len + 2 | |
3e43a32a MS |
14178 | && actual_name[actual_name_len |
14179 | - die_name_len - 1] == ':') | |
abc72ce4 DE |
14180 | name = |
14181 | obsavestring (actual_name, | |
14182 | actual_name_len - die_name_len - 2, | |
14183 | &cu->objfile->objfile_obstack); | |
14184 | } | |
14185 | } | |
14186 | xfree (actual_name); | |
14187 | return name; | |
14188 | } | |
14189 | } | |
14190 | } | |
14191 | ||
14192 | return NULL; | |
14193 | } | |
14194 | ||
96408a79 SA |
14195 | /* GCC might emit a nameless typedef that has a linkage name. Determine the |
14196 | prefix part in such case. See | |
14197 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
14198 | ||
14199 | static char * | |
14200 | anonymous_struct_prefix (struct die_info *die, struct dwarf2_cu *cu) | |
14201 | { | |
14202 | struct attribute *attr; | |
14203 | char *base; | |
14204 | ||
14205 | if (die->tag != DW_TAG_class_type && die->tag != DW_TAG_interface_type | |
14206 | && die->tag != DW_TAG_structure_type && die->tag != DW_TAG_union_type) | |
14207 | return NULL; | |
14208 | ||
14209 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
14210 | if (attr != NULL && DW_STRING (attr) != NULL) | |
14211 | return NULL; | |
14212 | ||
14213 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
14214 | if (attr == NULL) | |
14215 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
14216 | if (attr == NULL || DW_STRING (attr) == NULL) | |
14217 | return NULL; | |
14218 | ||
14219 | /* dwarf2_name had to be already called. */ | |
14220 | gdb_assert (DW_STRING_IS_CANONICAL (attr)); | |
14221 | ||
14222 | /* Strip the base name, keep any leading namespaces/classes. */ | |
14223 | base = strrchr (DW_STRING (attr), ':'); | |
14224 | if (base == NULL || base == DW_STRING (attr) || base[-1] != ':') | |
14225 | return ""; | |
14226 | ||
14227 | return obsavestring (DW_STRING (attr), &base[-1] - DW_STRING (attr), | |
14228 | &cu->objfile->objfile_obstack); | |
14229 | } | |
14230 | ||
fdde2d81 | 14231 | /* Return the name of the namespace/class that DIE is defined within, |
0114d602 | 14232 | or "" if we can't tell. The caller should not xfree the result. |
fdde2d81 | 14233 | |
0114d602 DJ |
14234 | For example, if we're within the method foo() in the following |
14235 | code: | |
14236 | ||
14237 | namespace N { | |
14238 | class C { | |
14239 | void foo () { | |
14240 | } | |
14241 | }; | |
14242 | } | |
14243 | ||
14244 | then determine_prefix on foo's die will return "N::C". */ | |
fdde2d81 | 14245 | |
0d5cff50 | 14246 | static const char * |
e142c38c | 14247 | determine_prefix (struct die_info *die, struct dwarf2_cu *cu) |
63d06c5c | 14248 | { |
0114d602 DJ |
14249 | struct die_info *parent, *spec_die; |
14250 | struct dwarf2_cu *spec_cu; | |
14251 | struct type *parent_type; | |
96408a79 | 14252 | char *retval; |
63d06c5c | 14253 | |
f55ee35c JK |
14254 | if (cu->language != language_cplus && cu->language != language_java |
14255 | && cu->language != language_fortran) | |
0114d602 DJ |
14256 | return ""; |
14257 | ||
96408a79 SA |
14258 | retval = anonymous_struct_prefix (die, cu); |
14259 | if (retval) | |
14260 | return retval; | |
14261 | ||
0114d602 DJ |
14262 | /* We have to be careful in the presence of DW_AT_specification. |
14263 | For example, with GCC 3.4, given the code | |
14264 | ||
14265 | namespace N { | |
14266 | void foo() { | |
14267 | // Definition of N::foo. | |
14268 | } | |
14269 | } | |
14270 | ||
14271 | then we'll have a tree of DIEs like this: | |
14272 | ||
14273 | 1: DW_TAG_compile_unit | |
14274 | 2: DW_TAG_namespace // N | |
14275 | 3: DW_TAG_subprogram // declaration of N::foo | |
14276 | 4: DW_TAG_subprogram // definition of N::foo | |
14277 | DW_AT_specification // refers to die #3 | |
14278 | ||
14279 | Thus, when processing die #4, we have to pretend that we're in | |
14280 | the context of its DW_AT_specification, namely the contex of die | |
14281 | #3. */ | |
14282 | spec_cu = cu; | |
14283 | spec_die = die_specification (die, &spec_cu); | |
14284 | if (spec_die == NULL) | |
14285 | parent = die->parent; | |
14286 | else | |
63d06c5c | 14287 | { |
0114d602 DJ |
14288 | parent = spec_die->parent; |
14289 | cu = spec_cu; | |
63d06c5c | 14290 | } |
0114d602 DJ |
14291 | |
14292 | if (parent == NULL) | |
14293 | return ""; | |
98bfdba5 PA |
14294 | else if (parent->building_fullname) |
14295 | { | |
14296 | const char *name; | |
14297 | const char *parent_name; | |
14298 | ||
14299 | /* It has been seen on RealView 2.2 built binaries, | |
14300 | DW_TAG_template_type_param types actually _defined_ as | |
14301 | children of the parent class: | |
14302 | ||
14303 | enum E {}; | |
14304 | template class <class Enum> Class{}; | |
14305 | Class<enum E> class_e; | |
14306 | ||
14307 | 1: DW_TAG_class_type (Class) | |
14308 | 2: DW_TAG_enumeration_type (E) | |
14309 | 3: DW_TAG_enumerator (enum1:0) | |
14310 | 3: DW_TAG_enumerator (enum2:1) | |
14311 | ... | |
14312 | 2: DW_TAG_template_type_param | |
14313 | DW_AT_type DW_FORM_ref_udata (E) | |
14314 | ||
14315 | Besides being broken debug info, it can put GDB into an | |
14316 | infinite loop. Consider: | |
14317 | ||
14318 | When we're building the full name for Class<E>, we'll start | |
14319 | at Class, and go look over its template type parameters, | |
14320 | finding E. We'll then try to build the full name of E, and | |
14321 | reach here. We're now trying to build the full name of E, | |
14322 | and look over the parent DIE for containing scope. In the | |
14323 | broken case, if we followed the parent DIE of E, we'd again | |
14324 | find Class, and once again go look at its template type | |
14325 | arguments, etc., etc. Simply don't consider such parent die | |
14326 | as source-level parent of this die (it can't be, the language | |
14327 | doesn't allow it), and break the loop here. */ | |
14328 | name = dwarf2_name (die, cu); | |
14329 | parent_name = dwarf2_name (parent, cu); | |
14330 | complaint (&symfile_complaints, | |
14331 | _("template param type '%s' defined within parent '%s'"), | |
14332 | name ? name : "<unknown>", | |
14333 | parent_name ? parent_name : "<unknown>"); | |
14334 | return ""; | |
14335 | } | |
63d06c5c | 14336 | else |
0114d602 DJ |
14337 | switch (parent->tag) |
14338 | { | |
63d06c5c | 14339 | case DW_TAG_namespace: |
0114d602 | 14340 | parent_type = read_type_die (parent, cu); |
acebe513 UW |
14341 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
14342 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
14343 | Work around this problem here. */ | |
14344 | if (cu->language == language_cplus | |
14345 | && strcmp (TYPE_TAG_NAME (parent_type), "::") == 0) | |
14346 | return ""; | |
0114d602 DJ |
14347 | /* We give a name to even anonymous namespaces. */ |
14348 | return TYPE_TAG_NAME (parent_type); | |
63d06c5c | 14349 | case DW_TAG_class_type: |
680b30c7 | 14350 | case DW_TAG_interface_type: |
63d06c5c | 14351 | case DW_TAG_structure_type: |
0114d602 | 14352 | case DW_TAG_union_type: |
f55ee35c | 14353 | case DW_TAG_module: |
0114d602 DJ |
14354 | parent_type = read_type_die (parent, cu); |
14355 | if (TYPE_TAG_NAME (parent_type) != NULL) | |
14356 | return TYPE_TAG_NAME (parent_type); | |
14357 | else | |
14358 | /* An anonymous structure is only allowed non-static data | |
14359 | members; no typedefs, no member functions, et cetera. | |
14360 | So it does not need a prefix. */ | |
14361 | return ""; | |
abc72ce4 | 14362 | case DW_TAG_compile_unit: |
95554aad | 14363 | case DW_TAG_partial_unit: |
abc72ce4 DE |
14364 | /* gcc-4.5 -gdwarf-4 can drop the enclosing namespace. Cope. */ |
14365 | if (cu->language == language_cplus | |
8b70b953 | 14366 | && !VEC_empty (dwarf2_section_info_def, dwarf2_per_objfile->types) |
abc72ce4 DE |
14367 | && die->child != NULL |
14368 | && (die->tag == DW_TAG_class_type | |
14369 | || die->tag == DW_TAG_structure_type | |
14370 | || die->tag == DW_TAG_union_type)) | |
14371 | { | |
14372 | char *name = guess_full_die_structure_name (die, cu); | |
14373 | if (name != NULL) | |
14374 | return name; | |
14375 | } | |
14376 | return ""; | |
63d06c5c | 14377 | default: |
8176b9b8 | 14378 | return determine_prefix (parent, cu); |
63d06c5c | 14379 | } |
63d06c5c DC |
14380 | } |
14381 | ||
3e43a32a MS |
14382 | /* Return a newly-allocated string formed by concatenating PREFIX and SUFFIX |
14383 | with appropriate separator. If PREFIX or SUFFIX is NULL or empty, then | |
14384 | simply copy the SUFFIX or PREFIX, respectively. If OBS is non-null, perform | |
14385 | an obconcat, otherwise allocate storage for the result. The CU argument is | |
14386 | used to determine the language and hence, the appropriate separator. */ | |
987504bb | 14387 | |
f55ee35c | 14388 | #define MAX_SEP_LEN 7 /* strlen ("__") + strlen ("_MOD_") */ |
63d06c5c DC |
14389 | |
14390 | static char * | |
f55ee35c JK |
14391 | typename_concat (struct obstack *obs, const char *prefix, const char *suffix, |
14392 | int physname, struct dwarf2_cu *cu) | |
63d06c5c | 14393 | { |
f55ee35c | 14394 | const char *lead = ""; |
5c315b68 | 14395 | const char *sep; |
63d06c5c | 14396 | |
3e43a32a MS |
14397 | if (suffix == NULL || suffix[0] == '\0' |
14398 | || prefix == NULL || prefix[0] == '\0') | |
987504bb JJ |
14399 | sep = ""; |
14400 | else if (cu->language == language_java) | |
14401 | sep = "."; | |
f55ee35c JK |
14402 | else if (cu->language == language_fortran && physname) |
14403 | { | |
14404 | /* This is gfortran specific mangling. Normally DW_AT_linkage_name or | |
14405 | DW_AT_MIPS_linkage_name is preferred and used instead. */ | |
14406 | ||
14407 | lead = "__"; | |
14408 | sep = "_MOD_"; | |
14409 | } | |
987504bb JJ |
14410 | else |
14411 | sep = "::"; | |
63d06c5c | 14412 | |
6dd47d34 DE |
14413 | if (prefix == NULL) |
14414 | prefix = ""; | |
14415 | if (suffix == NULL) | |
14416 | suffix = ""; | |
14417 | ||
987504bb JJ |
14418 | if (obs == NULL) |
14419 | { | |
3e43a32a MS |
14420 | char *retval |
14421 | = xmalloc (strlen (prefix) + MAX_SEP_LEN + strlen (suffix) + 1); | |
9a619af0 | 14422 | |
f55ee35c JK |
14423 | strcpy (retval, lead); |
14424 | strcat (retval, prefix); | |
6dd47d34 DE |
14425 | strcat (retval, sep); |
14426 | strcat (retval, suffix); | |
63d06c5c DC |
14427 | return retval; |
14428 | } | |
987504bb JJ |
14429 | else |
14430 | { | |
14431 | /* We have an obstack. */ | |
f55ee35c | 14432 | return obconcat (obs, lead, prefix, sep, suffix, (char *) NULL); |
987504bb | 14433 | } |
63d06c5c DC |
14434 | } |
14435 | ||
c906108c SS |
14436 | /* Return sibling of die, NULL if no sibling. */ |
14437 | ||
f9aca02d | 14438 | static struct die_info * |
fba45db2 | 14439 | sibling_die (struct die_info *die) |
c906108c | 14440 | { |
639d11d3 | 14441 | return die->sibling; |
c906108c SS |
14442 | } |
14443 | ||
71c25dea TT |
14444 | /* Get name of a die, return NULL if not found. */ |
14445 | ||
14446 | static char * | |
14447 | dwarf2_canonicalize_name (char *name, struct dwarf2_cu *cu, | |
14448 | struct obstack *obstack) | |
14449 | { | |
14450 | if (name && cu->language == language_cplus) | |
14451 | { | |
14452 | char *canon_name = cp_canonicalize_string (name); | |
14453 | ||
14454 | if (canon_name != NULL) | |
14455 | { | |
14456 | if (strcmp (canon_name, name) != 0) | |
14457 | name = obsavestring (canon_name, strlen (canon_name), | |
14458 | obstack); | |
14459 | xfree (canon_name); | |
14460 | } | |
14461 | } | |
14462 | ||
14463 | return name; | |
c906108c SS |
14464 | } |
14465 | ||
9219021c DC |
14466 | /* Get name of a die, return NULL if not found. */ |
14467 | ||
14468 | static char * | |
e142c38c | 14469 | dwarf2_name (struct die_info *die, struct dwarf2_cu *cu) |
9219021c DC |
14470 | { |
14471 | struct attribute *attr; | |
14472 | ||
e142c38c | 14473 | attr = dwarf2_attr (die, DW_AT_name, cu); |
53832f31 TT |
14474 | if ((!attr || !DW_STRING (attr)) |
14475 | && die->tag != DW_TAG_class_type | |
14476 | && die->tag != DW_TAG_interface_type | |
14477 | && die->tag != DW_TAG_structure_type | |
14478 | && die->tag != DW_TAG_union_type) | |
71c25dea TT |
14479 | return NULL; |
14480 | ||
14481 | switch (die->tag) | |
14482 | { | |
14483 | case DW_TAG_compile_unit: | |
95554aad | 14484 | case DW_TAG_partial_unit: |
71c25dea TT |
14485 | /* Compilation units have a DW_AT_name that is a filename, not |
14486 | a source language identifier. */ | |
14487 | case DW_TAG_enumeration_type: | |
14488 | case DW_TAG_enumerator: | |
14489 | /* These tags always have simple identifiers already; no need | |
14490 | to canonicalize them. */ | |
14491 | return DW_STRING (attr); | |
907af001 | 14492 | |
418835cc KS |
14493 | case DW_TAG_subprogram: |
14494 | /* Java constructors will all be named "<init>", so return | |
14495 | the class name when we see this special case. */ | |
14496 | if (cu->language == language_java | |
14497 | && DW_STRING (attr) != NULL | |
14498 | && strcmp (DW_STRING (attr), "<init>") == 0) | |
14499 | { | |
14500 | struct dwarf2_cu *spec_cu = cu; | |
14501 | struct die_info *spec_die; | |
14502 | ||
14503 | /* GCJ will output '<init>' for Java constructor names. | |
14504 | For this special case, return the name of the parent class. */ | |
14505 | ||
14506 | /* GCJ may output suprogram DIEs with AT_specification set. | |
14507 | If so, use the name of the specified DIE. */ | |
14508 | spec_die = die_specification (die, &spec_cu); | |
14509 | if (spec_die != NULL) | |
14510 | return dwarf2_name (spec_die, spec_cu); | |
14511 | ||
14512 | do | |
14513 | { | |
14514 | die = die->parent; | |
14515 | if (die->tag == DW_TAG_class_type) | |
14516 | return dwarf2_name (die, cu); | |
14517 | } | |
95554aad TT |
14518 | while (die->tag != DW_TAG_compile_unit |
14519 | && die->tag != DW_TAG_partial_unit); | |
418835cc | 14520 | } |
907af001 UW |
14521 | break; |
14522 | ||
14523 | case DW_TAG_class_type: | |
14524 | case DW_TAG_interface_type: | |
14525 | case DW_TAG_structure_type: | |
14526 | case DW_TAG_union_type: | |
14527 | /* Some GCC versions emit spurious DW_AT_name attributes for unnamed | |
14528 | structures or unions. These were of the form "._%d" in GCC 4.1, | |
14529 | or simply "<anonymous struct>" or "<anonymous union>" in GCC 4.3 | |
14530 | and GCC 4.4. We work around this problem by ignoring these. */ | |
53832f31 TT |
14531 | if (attr && DW_STRING (attr) |
14532 | && (strncmp (DW_STRING (attr), "._", 2) == 0 | |
14533 | || strncmp (DW_STRING (attr), "<anonymous", 10) == 0)) | |
907af001 | 14534 | return NULL; |
53832f31 TT |
14535 | |
14536 | /* GCC might emit a nameless typedef that has a linkage name. See | |
14537 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
14538 | if (!attr || DW_STRING (attr) == NULL) | |
14539 | { | |
df5c6c50 | 14540 | char *demangled = NULL; |
53832f31 TT |
14541 | |
14542 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
14543 | if (attr == NULL) | |
14544 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
14545 | ||
14546 | if (attr == NULL || DW_STRING (attr) == NULL) | |
14547 | return NULL; | |
14548 | ||
df5c6c50 JK |
14549 | /* Avoid demangling DW_STRING (attr) the second time on a second |
14550 | call for the same DIE. */ | |
14551 | if (!DW_STRING_IS_CANONICAL (attr)) | |
14552 | demangled = cplus_demangle (DW_STRING (attr), DMGL_TYPES); | |
53832f31 TT |
14553 | |
14554 | if (demangled) | |
14555 | { | |
96408a79 SA |
14556 | char *base; |
14557 | ||
53832f31 | 14558 | /* FIXME: we already did this for the partial symbol... */ |
96408a79 SA |
14559 | DW_STRING (attr) = obsavestring (demangled, strlen (demangled), |
14560 | &cu->objfile->objfile_obstack); | |
53832f31 TT |
14561 | DW_STRING_IS_CANONICAL (attr) = 1; |
14562 | xfree (demangled); | |
96408a79 SA |
14563 | |
14564 | /* Strip any leading namespaces/classes, keep only the base name. | |
14565 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
14566 | base = strrchr (DW_STRING (attr), ':'); | |
14567 | if (base && base > DW_STRING (attr) && base[-1] == ':') | |
14568 | return &base[1]; | |
14569 | else | |
14570 | return DW_STRING (attr); | |
53832f31 TT |
14571 | } |
14572 | } | |
907af001 UW |
14573 | break; |
14574 | ||
71c25dea | 14575 | default: |
907af001 UW |
14576 | break; |
14577 | } | |
14578 | ||
14579 | if (!DW_STRING_IS_CANONICAL (attr)) | |
14580 | { | |
14581 | DW_STRING (attr) | |
14582 | = dwarf2_canonicalize_name (DW_STRING (attr), cu, | |
14583 | &cu->objfile->objfile_obstack); | |
14584 | DW_STRING_IS_CANONICAL (attr) = 1; | |
71c25dea | 14585 | } |
907af001 | 14586 | return DW_STRING (attr); |
9219021c DC |
14587 | } |
14588 | ||
14589 | /* Return the die that this die in an extension of, or NULL if there | |
f2f0e013 DJ |
14590 | is none. *EXT_CU is the CU containing DIE on input, and the CU |
14591 | containing the return value on output. */ | |
9219021c DC |
14592 | |
14593 | static struct die_info * | |
f2f0e013 | 14594 | dwarf2_extension (struct die_info *die, struct dwarf2_cu **ext_cu) |
9219021c DC |
14595 | { |
14596 | struct attribute *attr; | |
9219021c | 14597 | |
f2f0e013 | 14598 | attr = dwarf2_attr (die, DW_AT_extension, *ext_cu); |
9219021c DC |
14599 | if (attr == NULL) |
14600 | return NULL; | |
14601 | ||
f2f0e013 | 14602 | return follow_die_ref (die, attr, ext_cu); |
9219021c DC |
14603 | } |
14604 | ||
c906108c SS |
14605 | /* Convert a DIE tag into its string name. */ |
14606 | ||
f39c6ffd | 14607 | static const char * |
aa1ee363 | 14608 | dwarf_tag_name (unsigned tag) |
c906108c | 14609 | { |
f39c6ffd TT |
14610 | const char *name = get_DW_TAG_name (tag); |
14611 | ||
14612 | if (name == NULL) | |
14613 | return "DW_TAG_<unknown>"; | |
14614 | ||
14615 | return name; | |
c906108c SS |
14616 | } |
14617 | ||
14618 | /* Convert a DWARF attribute code into its string name. */ | |
14619 | ||
f39c6ffd | 14620 | static const char * |
aa1ee363 | 14621 | dwarf_attr_name (unsigned attr) |
c906108c | 14622 | { |
f39c6ffd TT |
14623 | const char *name; |
14624 | ||
c764a876 | 14625 | #ifdef MIPS /* collides with DW_AT_HP_block_index */ |
f39c6ffd TT |
14626 | if (attr == DW_AT_MIPS_fde) |
14627 | return "DW_AT_MIPS_fde"; | |
14628 | #else | |
14629 | if (attr == DW_AT_HP_block_index) | |
14630 | return "DW_AT_HP_block_index"; | |
c764a876 | 14631 | #endif |
f39c6ffd TT |
14632 | |
14633 | name = get_DW_AT_name (attr); | |
14634 | ||
14635 | if (name == NULL) | |
14636 | return "DW_AT_<unknown>"; | |
14637 | ||
14638 | return name; | |
c906108c SS |
14639 | } |
14640 | ||
14641 | /* Convert a DWARF value form code into its string name. */ | |
14642 | ||
f39c6ffd | 14643 | static const char * |
aa1ee363 | 14644 | dwarf_form_name (unsigned form) |
c906108c | 14645 | { |
f39c6ffd TT |
14646 | const char *name = get_DW_FORM_name (form); |
14647 | ||
14648 | if (name == NULL) | |
14649 | return "DW_FORM_<unknown>"; | |
14650 | ||
14651 | return name; | |
c906108c SS |
14652 | } |
14653 | ||
14654 | static char * | |
fba45db2 | 14655 | dwarf_bool_name (unsigned mybool) |
c906108c SS |
14656 | { |
14657 | if (mybool) | |
14658 | return "TRUE"; | |
14659 | else | |
14660 | return "FALSE"; | |
14661 | } | |
14662 | ||
14663 | /* Convert a DWARF type code into its string name. */ | |
14664 | ||
f39c6ffd | 14665 | static const char * |
aa1ee363 | 14666 | dwarf_type_encoding_name (unsigned enc) |
c906108c | 14667 | { |
f39c6ffd | 14668 | const char *name = get_DW_ATE_name (enc); |
c906108c | 14669 | |
f39c6ffd TT |
14670 | if (name == NULL) |
14671 | return "DW_ATE_<unknown>"; | |
c906108c | 14672 | |
f39c6ffd | 14673 | return name; |
c906108c | 14674 | } |
c906108c | 14675 | |
f9aca02d | 14676 | static void |
d97bc12b | 14677 | dump_die_shallow (struct ui_file *f, int indent, struct die_info *die) |
c906108c SS |
14678 | { |
14679 | unsigned int i; | |
14680 | ||
d97bc12b DE |
14681 | print_spaces (indent, f); |
14682 | fprintf_unfiltered (f, "Die: %s (abbrev %d, offset 0x%x)\n", | |
b64f50a1 | 14683 | dwarf_tag_name (die->tag), die->abbrev, die->offset.sect_off); |
d97bc12b DE |
14684 | |
14685 | if (die->parent != NULL) | |
14686 | { | |
14687 | print_spaces (indent, f); | |
14688 | fprintf_unfiltered (f, " parent at offset: 0x%x\n", | |
b64f50a1 | 14689 | die->parent->offset.sect_off); |
d97bc12b DE |
14690 | } |
14691 | ||
14692 | print_spaces (indent, f); | |
14693 | fprintf_unfiltered (f, " has children: %s\n", | |
639d11d3 | 14694 | dwarf_bool_name (die->child != NULL)); |
c906108c | 14695 | |
d97bc12b DE |
14696 | print_spaces (indent, f); |
14697 | fprintf_unfiltered (f, " attributes:\n"); | |
14698 | ||
c906108c SS |
14699 | for (i = 0; i < die->num_attrs; ++i) |
14700 | { | |
d97bc12b DE |
14701 | print_spaces (indent, f); |
14702 | fprintf_unfiltered (f, " %s (%s) ", | |
c906108c SS |
14703 | dwarf_attr_name (die->attrs[i].name), |
14704 | dwarf_form_name (die->attrs[i].form)); | |
d97bc12b | 14705 | |
c906108c SS |
14706 | switch (die->attrs[i].form) |
14707 | { | |
c906108c | 14708 | case DW_FORM_addr: |
3019eac3 | 14709 | case DW_FORM_GNU_addr_index: |
d97bc12b | 14710 | fprintf_unfiltered (f, "address: "); |
5af949e3 | 14711 | fputs_filtered (hex_string (DW_ADDR (&die->attrs[i])), f); |
c906108c SS |
14712 | break; |
14713 | case DW_FORM_block2: | |
14714 | case DW_FORM_block4: | |
14715 | case DW_FORM_block: | |
14716 | case DW_FORM_block1: | |
3e43a32a MS |
14717 | fprintf_unfiltered (f, "block: size %d", |
14718 | DW_BLOCK (&die->attrs[i])->size); | |
c906108c | 14719 | break; |
2dc7f7b3 TT |
14720 | case DW_FORM_exprloc: |
14721 | fprintf_unfiltered (f, "expression: size %u", | |
14722 | DW_BLOCK (&die->attrs[i])->size); | |
14723 | break; | |
4568ecf9 DE |
14724 | case DW_FORM_ref_addr: |
14725 | fprintf_unfiltered (f, "ref address: "); | |
14726 | fputs_filtered (hex_string (DW_UNSND (&die->attrs[i])), f); | |
14727 | break; | |
10b3939b DJ |
14728 | case DW_FORM_ref1: |
14729 | case DW_FORM_ref2: | |
14730 | case DW_FORM_ref4: | |
4568ecf9 DE |
14731 | case DW_FORM_ref8: |
14732 | case DW_FORM_ref_udata: | |
d97bc12b | 14733 | fprintf_unfiltered (f, "constant ref: 0x%lx (adjusted)", |
4568ecf9 | 14734 | (long) (DW_UNSND (&die->attrs[i]))); |
10b3939b | 14735 | break; |
c906108c SS |
14736 | case DW_FORM_data1: |
14737 | case DW_FORM_data2: | |
14738 | case DW_FORM_data4: | |
ce5d95e1 | 14739 | case DW_FORM_data8: |
c906108c SS |
14740 | case DW_FORM_udata: |
14741 | case DW_FORM_sdata: | |
43bbcdc2 PH |
14742 | fprintf_unfiltered (f, "constant: %s", |
14743 | pulongest (DW_UNSND (&die->attrs[i]))); | |
c906108c | 14744 | break; |
2dc7f7b3 TT |
14745 | case DW_FORM_sec_offset: |
14746 | fprintf_unfiltered (f, "section offset: %s", | |
14747 | pulongest (DW_UNSND (&die->attrs[i]))); | |
14748 | break; | |
55f1336d | 14749 | case DW_FORM_ref_sig8: |
348e048f DE |
14750 | if (DW_SIGNATURED_TYPE (&die->attrs[i]) != NULL) |
14751 | fprintf_unfiltered (f, "signatured type, offset: 0x%x", | |
b64f50a1 | 14752 | DW_SIGNATURED_TYPE (&die->attrs[i])->per_cu.offset.sect_off); |
348e048f DE |
14753 | else |
14754 | fprintf_unfiltered (f, "signatured type, offset: unknown"); | |
14755 | break; | |
c906108c | 14756 | case DW_FORM_string: |
4bdf3d34 | 14757 | case DW_FORM_strp: |
3019eac3 | 14758 | case DW_FORM_GNU_str_index: |
8285870a | 14759 | fprintf_unfiltered (f, "string: \"%s\" (%s canonicalized)", |
c906108c | 14760 | DW_STRING (&die->attrs[i]) |
8285870a JK |
14761 | ? DW_STRING (&die->attrs[i]) : "", |
14762 | DW_STRING_IS_CANONICAL (&die->attrs[i]) ? "is" : "not"); | |
c906108c SS |
14763 | break; |
14764 | case DW_FORM_flag: | |
14765 | if (DW_UNSND (&die->attrs[i])) | |
d97bc12b | 14766 | fprintf_unfiltered (f, "flag: TRUE"); |
c906108c | 14767 | else |
d97bc12b | 14768 | fprintf_unfiltered (f, "flag: FALSE"); |
c906108c | 14769 | break; |
2dc7f7b3 TT |
14770 | case DW_FORM_flag_present: |
14771 | fprintf_unfiltered (f, "flag: TRUE"); | |
14772 | break; | |
a8329558 | 14773 | case DW_FORM_indirect: |
0963b4bd MS |
14774 | /* The reader will have reduced the indirect form to |
14775 | the "base form" so this form should not occur. */ | |
3e43a32a MS |
14776 | fprintf_unfiltered (f, |
14777 | "unexpected attribute form: DW_FORM_indirect"); | |
a8329558 | 14778 | break; |
c906108c | 14779 | default: |
d97bc12b | 14780 | fprintf_unfiltered (f, "unsupported attribute form: %d.", |
c5aa993b | 14781 | die->attrs[i].form); |
d97bc12b | 14782 | break; |
c906108c | 14783 | } |
d97bc12b | 14784 | fprintf_unfiltered (f, "\n"); |
c906108c SS |
14785 | } |
14786 | } | |
14787 | ||
f9aca02d | 14788 | static void |
d97bc12b | 14789 | dump_die_for_error (struct die_info *die) |
c906108c | 14790 | { |
d97bc12b DE |
14791 | dump_die_shallow (gdb_stderr, 0, die); |
14792 | } | |
14793 | ||
14794 | static void | |
14795 | dump_die_1 (struct ui_file *f, int level, int max_level, struct die_info *die) | |
14796 | { | |
14797 | int indent = level * 4; | |
14798 | ||
14799 | gdb_assert (die != NULL); | |
14800 | ||
14801 | if (level >= max_level) | |
14802 | return; | |
14803 | ||
14804 | dump_die_shallow (f, indent, die); | |
14805 | ||
14806 | if (die->child != NULL) | |
c906108c | 14807 | { |
d97bc12b DE |
14808 | print_spaces (indent, f); |
14809 | fprintf_unfiltered (f, " Children:"); | |
14810 | if (level + 1 < max_level) | |
14811 | { | |
14812 | fprintf_unfiltered (f, "\n"); | |
14813 | dump_die_1 (f, level + 1, max_level, die->child); | |
14814 | } | |
14815 | else | |
14816 | { | |
3e43a32a MS |
14817 | fprintf_unfiltered (f, |
14818 | " [not printed, max nesting level reached]\n"); | |
d97bc12b DE |
14819 | } |
14820 | } | |
14821 | ||
14822 | if (die->sibling != NULL && level > 0) | |
14823 | { | |
14824 | dump_die_1 (f, level, max_level, die->sibling); | |
c906108c SS |
14825 | } |
14826 | } | |
14827 | ||
d97bc12b DE |
14828 | /* This is called from the pdie macro in gdbinit.in. |
14829 | It's not static so gcc will keep a copy callable from gdb. */ | |
14830 | ||
14831 | void | |
14832 | dump_die (struct die_info *die, int max_level) | |
14833 | { | |
14834 | dump_die_1 (gdb_stdlog, 0, max_level, die); | |
14835 | } | |
14836 | ||
f9aca02d | 14837 | static void |
51545339 | 14838 | store_in_ref_table (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 14839 | { |
51545339 | 14840 | void **slot; |
c906108c | 14841 | |
b64f50a1 JK |
14842 | slot = htab_find_slot_with_hash (cu->die_hash, die, die->offset.sect_off, |
14843 | INSERT); | |
51545339 DJ |
14844 | |
14845 | *slot = die; | |
c906108c SS |
14846 | } |
14847 | ||
b64f50a1 JK |
14848 | /* DW_ADDR is always stored already as sect_offset; despite for the forms |
14849 | besides DW_FORM_ref_addr it is stored as cu_offset in the DWARF file. */ | |
14850 | ||
93311388 DE |
14851 | static int |
14852 | is_ref_attr (struct attribute *attr) | |
c906108c | 14853 | { |
c906108c SS |
14854 | switch (attr->form) |
14855 | { | |
14856 | case DW_FORM_ref_addr: | |
c906108c SS |
14857 | case DW_FORM_ref1: |
14858 | case DW_FORM_ref2: | |
14859 | case DW_FORM_ref4: | |
613e1657 | 14860 | case DW_FORM_ref8: |
c906108c | 14861 | case DW_FORM_ref_udata: |
93311388 | 14862 | return 1; |
c906108c | 14863 | default: |
93311388 | 14864 | return 0; |
c906108c | 14865 | } |
93311388 DE |
14866 | } |
14867 | ||
b64f50a1 JK |
14868 | /* Return DIE offset of ATTR. Return 0 with complaint if ATTR is not of the |
14869 | required kind. */ | |
14870 | ||
14871 | static sect_offset | |
93311388 DE |
14872 | dwarf2_get_ref_die_offset (struct attribute *attr) |
14873 | { | |
4568ecf9 | 14874 | sect_offset retval = { DW_UNSND (attr) }; |
b64f50a1 | 14875 | |
93311388 | 14876 | if (is_ref_attr (attr)) |
b64f50a1 | 14877 | return retval; |
93311388 | 14878 | |
b64f50a1 | 14879 | retval.sect_off = 0; |
93311388 DE |
14880 | complaint (&symfile_complaints, |
14881 | _("unsupported die ref attribute form: '%s'"), | |
14882 | dwarf_form_name (attr->form)); | |
b64f50a1 | 14883 | return retval; |
c906108c SS |
14884 | } |
14885 | ||
43bbcdc2 PH |
14886 | /* Return the constant value held by ATTR. Return DEFAULT_VALUE if |
14887 | * the value held by the attribute is not constant. */ | |
a02abb62 | 14888 | |
43bbcdc2 | 14889 | static LONGEST |
a02abb62 JB |
14890 | dwarf2_get_attr_constant_value (struct attribute *attr, int default_value) |
14891 | { | |
14892 | if (attr->form == DW_FORM_sdata) | |
14893 | return DW_SND (attr); | |
14894 | else if (attr->form == DW_FORM_udata | |
14895 | || attr->form == DW_FORM_data1 | |
14896 | || attr->form == DW_FORM_data2 | |
14897 | || attr->form == DW_FORM_data4 | |
14898 | || attr->form == DW_FORM_data8) | |
14899 | return DW_UNSND (attr); | |
14900 | else | |
14901 | { | |
3e43a32a MS |
14902 | complaint (&symfile_complaints, |
14903 | _("Attribute value is not a constant (%s)"), | |
a02abb62 JB |
14904 | dwarf_form_name (attr->form)); |
14905 | return default_value; | |
14906 | } | |
14907 | } | |
14908 | ||
03dd20cc | 14909 | /* THIS_CU has a reference to PER_CU. If necessary, load the new compilation |
348e048f DE |
14910 | unit and add it to our queue. |
14911 | The result is non-zero if PER_CU was queued, otherwise the result is zero | |
14912 | meaning either PER_CU is already queued or it is already loaded. */ | |
03dd20cc | 14913 | |
348e048f | 14914 | static int |
03dd20cc | 14915 | maybe_queue_comp_unit (struct dwarf2_cu *this_cu, |
95554aad TT |
14916 | struct dwarf2_per_cu_data *per_cu, |
14917 | enum language pretend_language) | |
03dd20cc | 14918 | { |
98bfdba5 PA |
14919 | /* We may arrive here during partial symbol reading, if we need full |
14920 | DIEs to process an unusual case (e.g. template arguments). Do | |
14921 | not queue PER_CU, just tell our caller to load its DIEs. */ | |
14922 | if (dwarf2_per_objfile->reading_partial_symbols) | |
14923 | { | |
14924 | if (per_cu->cu == NULL || per_cu->cu->dies == NULL) | |
14925 | return 1; | |
14926 | return 0; | |
14927 | } | |
14928 | ||
03dd20cc DJ |
14929 | /* Mark the dependence relation so that we don't flush PER_CU |
14930 | too early. */ | |
14931 | dwarf2_add_dependence (this_cu, per_cu); | |
14932 | ||
14933 | /* If it's already on the queue, we have nothing to do. */ | |
14934 | if (per_cu->queued) | |
348e048f | 14935 | return 0; |
03dd20cc DJ |
14936 | |
14937 | /* If the compilation unit is already loaded, just mark it as | |
14938 | used. */ | |
14939 | if (per_cu->cu != NULL) | |
14940 | { | |
14941 | per_cu->cu->last_used = 0; | |
348e048f | 14942 | return 0; |
03dd20cc DJ |
14943 | } |
14944 | ||
14945 | /* Add it to the queue. */ | |
95554aad | 14946 | queue_comp_unit (per_cu, pretend_language); |
348e048f DE |
14947 | |
14948 | return 1; | |
14949 | } | |
14950 | ||
14951 | /* Follow reference or signature attribute ATTR of SRC_DIE. | |
14952 | On entry *REF_CU is the CU of SRC_DIE. | |
14953 | On exit *REF_CU is the CU of the result. */ | |
14954 | ||
14955 | static struct die_info * | |
14956 | follow_die_ref_or_sig (struct die_info *src_die, struct attribute *attr, | |
14957 | struct dwarf2_cu **ref_cu) | |
14958 | { | |
14959 | struct die_info *die; | |
14960 | ||
14961 | if (is_ref_attr (attr)) | |
14962 | die = follow_die_ref (src_die, attr, ref_cu); | |
55f1336d | 14963 | else if (attr->form == DW_FORM_ref_sig8) |
348e048f DE |
14964 | die = follow_die_sig (src_die, attr, ref_cu); |
14965 | else | |
14966 | { | |
14967 | dump_die_for_error (src_die); | |
14968 | error (_("Dwarf Error: Expected reference attribute [in module %s]"), | |
14969 | (*ref_cu)->objfile->name); | |
14970 | } | |
14971 | ||
14972 | return die; | |
03dd20cc DJ |
14973 | } |
14974 | ||
5c631832 | 14975 | /* Follow reference OFFSET. |
673bfd45 DE |
14976 | On entry *REF_CU is the CU of the source die referencing OFFSET. |
14977 | On exit *REF_CU is the CU of the result. | |
14978 | Returns NULL if OFFSET is invalid. */ | |
f504f079 | 14979 | |
f9aca02d | 14980 | static struct die_info * |
b64f50a1 | 14981 | follow_die_offset (sect_offset offset, struct dwarf2_cu **ref_cu) |
c906108c | 14982 | { |
10b3939b | 14983 | struct die_info temp_die; |
f2f0e013 | 14984 | struct dwarf2_cu *target_cu, *cu = *ref_cu; |
10b3939b | 14985 | |
348e048f DE |
14986 | gdb_assert (cu->per_cu != NULL); |
14987 | ||
98bfdba5 PA |
14988 | target_cu = cu; |
14989 | ||
3019eac3 | 14990 | if (cu->per_cu->is_debug_types) |
348e048f DE |
14991 | { |
14992 | /* .debug_types CUs cannot reference anything outside their CU. | |
14993 | If they need to, they have to reference a signatured type via | |
55f1336d | 14994 | DW_FORM_ref_sig8. */ |
348e048f | 14995 | if (! offset_in_cu_p (&cu->header, offset)) |
5c631832 | 14996 | return NULL; |
348e048f DE |
14997 | } |
14998 | else if (! offset_in_cu_p (&cu->header, offset)) | |
10b3939b DJ |
14999 | { |
15000 | struct dwarf2_per_cu_data *per_cu; | |
9a619af0 | 15001 | |
45452591 | 15002 | per_cu = dwarf2_find_containing_comp_unit (offset, cu->objfile); |
03dd20cc DJ |
15003 | |
15004 | /* If necessary, add it to the queue and load its DIEs. */ | |
95554aad TT |
15005 | if (maybe_queue_comp_unit (cu, per_cu, cu->language)) |
15006 | load_full_comp_unit (per_cu, cu->language); | |
03dd20cc | 15007 | |
10b3939b DJ |
15008 | target_cu = per_cu->cu; |
15009 | } | |
98bfdba5 PA |
15010 | else if (cu->dies == NULL) |
15011 | { | |
15012 | /* We're loading full DIEs during partial symbol reading. */ | |
15013 | gdb_assert (dwarf2_per_objfile->reading_partial_symbols); | |
95554aad | 15014 | load_full_comp_unit (cu->per_cu, language_minimal); |
98bfdba5 | 15015 | } |
c906108c | 15016 | |
f2f0e013 | 15017 | *ref_cu = target_cu; |
51545339 | 15018 | temp_die.offset = offset; |
b64f50a1 | 15019 | return htab_find_with_hash (target_cu->die_hash, &temp_die, offset.sect_off); |
5c631832 | 15020 | } |
10b3939b | 15021 | |
5c631832 JK |
15022 | /* Follow reference attribute ATTR of SRC_DIE. |
15023 | On entry *REF_CU is the CU of SRC_DIE. | |
15024 | On exit *REF_CU is the CU of the result. */ | |
15025 | ||
15026 | static struct die_info * | |
15027 | follow_die_ref (struct die_info *src_die, struct attribute *attr, | |
15028 | struct dwarf2_cu **ref_cu) | |
15029 | { | |
b64f50a1 | 15030 | sect_offset offset = dwarf2_get_ref_die_offset (attr); |
5c631832 JK |
15031 | struct dwarf2_cu *cu = *ref_cu; |
15032 | struct die_info *die; | |
15033 | ||
15034 | die = follow_die_offset (offset, ref_cu); | |
15035 | if (!die) | |
15036 | error (_("Dwarf Error: Cannot find DIE at 0x%x referenced from DIE " | |
15037 | "at 0x%x [in module %s]"), | |
b64f50a1 | 15038 | offset.sect_off, src_die->offset.sect_off, cu->objfile->name); |
348e048f | 15039 | |
5c631832 JK |
15040 | return die; |
15041 | } | |
15042 | ||
d83e736b JK |
15043 | /* Return DWARF block referenced by DW_AT_location of DIE at OFFSET at PER_CU. |
15044 | Returned value is intended for DW_OP_call*. Returned | |
15045 | dwarf2_locexpr_baton->data has lifetime of PER_CU->OBJFILE. */ | |
5c631832 JK |
15046 | |
15047 | struct dwarf2_locexpr_baton | |
b64f50a1 | 15048 | dwarf2_fetch_die_location_block (cu_offset offset_in_cu, |
8cf6f0b1 TT |
15049 | struct dwarf2_per_cu_data *per_cu, |
15050 | CORE_ADDR (*get_frame_pc) (void *baton), | |
15051 | void *baton) | |
5c631832 | 15052 | { |
b64f50a1 | 15053 | sect_offset offset = { per_cu->offset.sect_off + offset_in_cu.cu_off }; |
918dd910 | 15054 | struct dwarf2_cu *cu; |
5c631832 JK |
15055 | struct die_info *die; |
15056 | struct attribute *attr; | |
15057 | struct dwarf2_locexpr_baton retval; | |
15058 | ||
8cf6f0b1 TT |
15059 | dw2_setup (per_cu->objfile); |
15060 | ||
918dd910 JK |
15061 | if (per_cu->cu == NULL) |
15062 | load_cu (per_cu); | |
15063 | cu = per_cu->cu; | |
15064 | ||
5c631832 JK |
15065 | die = follow_die_offset (offset, &cu); |
15066 | if (!die) | |
15067 | error (_("Dwarf Error: Cannot find DIE at 0x%x referenced in module %s"), | |
b64f50a1 | 15068 | offset.sect_off, per_cu->objfile->name); |
5c631832 JK |
15069 | |
15070 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
15071 | if (!attr) | |
15072 | { | |
e103e986 JK |
15073 | /* DWARF: "If there is no such attribute, then there is no effect.". |
15074 | DATA is ignored if SIZE is 0. */ | |
5c631832 | 15075 | |
e103e986 | 15076 | retval.data = NULL; |
5c631832 JK |
15077 | retval.size = 0; |
15078 | } | |
8cf6f0b1 TT |
15079 | else if (attr_form_is_section_offset (attr)) |
15080 | { | |
15081 | struct dwarf2_loclist_baton loclist_baton; | |
15082 | CORE_ADDR pc = (*get_frame_pc) (baton); | |
15083 | size_t size; | |
15084 | ||
15085 | fill_in_loclist_baton (cu, &loclist_baton, attr); | |
15086 | ||
15087 | retval.data = dwarf2_find_location_expression (&loclist_baton, | |
15088 | &size, pc); | |
15089 | retval.size = size; | |
15090 | } | |
5c631832 JK |
15091 | else |
15092 | { | |
15093 | if (!attr_form_is_block (attr)) | |
15094 | error (_("Dwarf Error: DIE at 0x%x referenced in module %s " | |
15095 | "is neither DW_FORM_block* nor DW_FORM_exprloc"), | |
b64f50a1 | 15096 | offset.sect_off, per_cu->objfile->name); |
5c631832 JK |
15097 | |
15098 | retval.data = DW_BLOCK (attr)->data; | |
15099 | retval.size = DW_BLOCK (attr)->size; | |
15100 | } | |
15101 | retval.per_cu = cu->per_cu; | |
918dd910 | 15102 | |
918dd910 JK |
15103 | age_cached_comp_units (); |
15104 | ||
5c631832 | 15105 | return retval; |
348e048f DE |
15106 | } |
15107 | ||
8a9b8146 TT |
15108 | /* Return the type of the DIE at DIE_OFFSET in the CU named by |
15109 | PER_CU. */ | |
15110 | ||
15111 | struct type * | |
b64f50a1 | 15112 | dwarf2_get_die_type (cu_offset die_offset, |
8a9b8146 TT |
15113 | struct dwarf2_per_cu_data *per_cu) |
15114 | { | |
b64f50a1 JK |
15115 | sect_offset die_offset_sect; |
15116 | ||
8a9b8146 | 15117 | dw2_setup (per_cu->objfile); |
b64f50a1 JK |
15118 | |
15119 | die_offset_sect.sect_off = per_cu->offset.sect_off + die_offset.cu_off; | |
15120 | return get_die_type_at_offset (die_offset_sect, per_cu); | |
8a9b8146 TT |
15121 | } |
15122 | ||
348e048f DE |
15123 | /* Follow the signature attribute ATTR in SRC_DIE. |
15124 | On entry *REF_CU is the CU of SRC_DIE. | |
15125 | On exit *REF_CU is the CU of the result. */ | |
15126 | ||
15127 | static struct die_info * | |
15128 | follow_die_sig (struct die_info *src_die, struct attribute *attr, | |
15129 | struct dwarf2_cu **ref_cu) | |
15130 | { | |
15131 | struct objfile *objfile = (*ref_cu)->objfile; | |
15132 | struct die_info temp_die; | |
15133 | struct signatured_type *sig_type = DW_SIGNATURED_TYPE (attr); | |
15134 | struct dwarf2_cu *sig_cu; | |
15135 | struct die_info *die; | |
15136 | ||
15137 | /* sig_type will be NULL if the signatured type is missing from | |
15138 | the debug info. */ | |
15139 | if (sig_type == NULL) | |
15140 | error (_("Dwarf Error: Cannot find signatured DIE referenced from DIE " | |
15141 | "at 0x%x [in module %s]"), | |
b64f50a1 | 15142 | src_die->offset.sect_off, objfile->name); |
348e048f DE |
15143 | |
15144 | /* If necessary, add it to the queue and load its DIEs. */ | |
15145 | ||
95554aad | 15146 | if (maybe_queue_comp_unit (*ref_cu, &sig_type->per_cu, language_minimal)) |
a0f42c21 | 15147 | read_signatured_type (sig_type); |
348e048f DE |
15148 | |
15149 | gdb_assert (sig_type->per_cu.cu != NULL); | |
15150 | ||
15151 | sig_cu = sig_type->per_cu.cu; | |
3019eac3 DE |
15152 | gdb_assert (sig_type->type_offset_in_section.sect_off != 0); |
15153 | temp_die.offset = sig_type->type_offset_in_section; | |
b64f50a1 JK |
15154 | die = htab_find_with_hash (sig_cu->die_hash, &temp_die, |
15155 | temp_die.offset.sect_off); | |
348e048f DE |
15156 | if (die) |
15157 | { | |
15158 | *ref_cu = sig_cu; | |
15159 | return die; | |
15160 | } | |
15161 | ||
3e43a32a MS |
15162 | error (_("Dwarf Error: Cannot find signatured DIE at 0x%x referenced " |
15163 | "from DIE at 0x%x [in module %s]"), | |
b64f50a1 | 15164 | temp_die.offset.sect_off, src_die->offset.sect_off, objfile->name); |
348e048f DE |
15165 | } |
15166 | ||
15167 | /* Given an offset of a signatured type, return its signatured_type. */ | |
15168 | ||
15169 | static struct signatured_type * | |
8b70b953 TT |
15170 | lookup_signatured_type_at_offset (struct objfile *objfile, |
15171 | struct dwarf2_section_info *section, | |
b64f50a1 | 15172 | sect_offset offset) |
348e048f | 15173 | { |
b64f50a1 | 15174 | gdb_byte *info_ptr = section->buffer + offset.sect_off; |
348e048f DE |
15175 | unsigned int length, initial_length_size; |
15176 | unsigned int sig_offset; | |
52dc124a | 15177 | struct signatured_type find_entry, *sig_type; |
348e048f DE |
15178 | |
15179 | length = read_initial_length (objfile->obfd, info_ptr, &initial_length_size); | |
15180 | sig_offset = (initial_length_size | |
15181 | + 2 /*version*/ | |
15182 | + (initial_length_size == 4 ? 4 : 8) /*debug_abbrev_offset*/ | |
15183 | + 1 /*address_size*/); | |
15184 | find_entry.signature = bfd_get_64 (objfile->obfd, info_ptr + sig_offset); | |
52dc124a | 15185 | sig_type = htab_find (dwarf2_per_objfile->signatured_types, &find_entry); |
348e048f DE |
15186 | |
15187 | /* This is only used to lookup previously recorded types. | |
15188 | If we didn't find it, it's our bug. */ | |
52dc124a DE |
15189 | gdb_assert (sig_type != NULL); |
15190 | gdb_assert (offset.sect_off == sig_type->per_cu.offset.sect_off); | |
348e048f | 15191 | |
52dc124a | 15192 | return sig_type; |
348e048f DE |
15193 | } |
15194 | ||
e5fe5e75 | 15195 | /* Load the DIEs associated with type unit PER_CU into memory. */ |
348e048f DE |
15196 | |
15197 | static void | |
e5fe5e75 | 15198 | load_full_type_unit (struct dwarf2_per_cu_data *per_cu) |
348e048f | 15199 | { |
e5fe5e75 | 15200 | struct objfile *objfile = per_cu->objfile; |
3019eac3 | 15201 | struct dwarf2_section_info *sect = per_cu->info_or_types_section; |
b64f50a1 | 15202 | sect_offset offset = per_cu->offset; |
52dc124a | 15203 | struct signatured_type *sig_type; |
348e048f | 15204 | |
8b70b953 | 15205 | dwarf2_read_section (objfile, sect); |
be391dca | 15206 | |
348e048f | 15207 | /* We have the section offset, but we need the signature to do the |
e5fe5e75 DE |
15208 | hash table lookup. */ |
15209 | /* FIXME: This is sorta unnecessary, read_signatured_type only uses | |
15210 | the signature to assert we found the right one. | |
15211 | Ok, but it's a lot of work. We should simplify things so any needed | |
15212 | assert doesn't require all this clumsiness. */ | |
52dc124a | 15213 | sig_type = lookup_signatured_type_at_offset (objfile, sect, offset); |
348e048f | 15214 | |
dee91e82 | 15215 | gdb_assert (&sig_type->per_cu == per_cu); |
52dc124a | 15216 | gdb_assert (sig_type->per_cu.cu == NULL); |
348e048f | 15217 | |
52dc124a | 15218 | read_signatured_type (sig_type); |
348e048f | 15219 | |
52dc124a | 15220 | gdb_assert (sig_type->per_cu.cu != NULL); |
348e048f DE |
15221 | } |
15222 | ||
dee91e82 DE |
15223 | /* die_reader_func for read_signatured_type. |
15224 | This is identical to load_full_comp_unit_reader, | |
15225 | but is kept separate for now. */ | |
348e048f DE |
15226 | |
15227 | static void | |
dee91e82 DE |
15228 | read_signatured_type_reader (const struct die_reader_specs *reader, |
15229 | gdb_byte *info_ptr, | |
15230 | struct die_info *comp_unit_die, | |
15231 | int has_children, | |
15232 | void *data) | |
348e048f | 15233 | { |
dee91e82 | 15234 | struct dwarf2_cu *cu = reader->cu; |
348e048f | 15235 | |
dee91e82 DE |
15236 | gdb_assert (cu->die_hash == NULL); |
15237 | cu->die_hash = | |
15238 | htab_create_alloc_ex (cu->header.length / 12, | |
15239 | die_hash, | |
15240 | die_eq, | |
15241 | NULL, | |
15242 | &cu->comp_unit_obstack, | |
15243 | hashtab_obstack_allocate, | |
15244 | dummy_obstack_deallocate); | |
348e048f | 15245 | |
dee91e82 DE |
15246 | if (has_children) |
15247 | comp_unit_die->child = read_die_and_siblings (reader, info_ptr, | |
15248 | &info_ptr, comp_unit_die); | |
15249 | cu->dies = comp_unit_die; | |
15250 | /* comp_unit_die is not stored in die_hash, no need. */ | |
348e048f DE |
15251 | |
15252 | /* We try not to read any attributes in this function, because not | |
9cdd5dbd | 15253 | all CUs needed for references have been loaded yet, and symbol |
348e048f | 15254 | table processing isn't initialized. But we have to set the CU language, |
dee91e82 DE |
15255 | or we won't be able to build types correctly. |
15256 | Similarly, if we do not read the producer, we can not apply | |
15257 | producer-specific interpretation. */ | |
95554aad | 15258 | prepare_one_comp_unit (cu, cu->dies, language_minimal); |
dee91e82 | 15259 | } |
348e048f | 15260 | |
3019eac3 DE |
15261 | /* Read in a signatured type and build its CU and DIEs. |
15262 | If the type is a stub for the real type in a DWO file, | |
15263 | read in the real type from the DWO file as well. */ | |
dee91e82 DE |
15264 | |
15265 | static void | |
15266 | read_signatured_type (struct signatured_type *sig_type) | |
15267 | { | |
15268 | struct dwarf2_per_cu_data *per_cu = &sig_type->per_cu; | |
348e048f | 15269 | |
3019eac3 | 15270 | gdb_assert (per_cu->is_debug_types); |
dee91e82 | 15271 | gdb_assert (per_cu->cu == NULL); |
348e048f | 15272 | |
fd820528 | 15273 | init_cutu_and_read_dies (per_cu, 0, 1, read_signatured_type_reader, NULL); |
c906108c SS |
15274 | } |
15275 | ||
c906108c SS |
15276 | /* Decode simple location descriptions. |
15277 | Given a pointer to a dwarf block that defines a location, compute | |
15278 | the location and return the value. | |
15279 | ||
4cecd739 DJ |
15280 | NOTE drow/2003-11-18: This function is called in two situations |
15281 | now: for the address of static or global variables (partial symbols | |
15282 | only) and for offsets into structures which are expected to be | |
15283 | (more or less) constant. The partial symbol case should go away, | |
15284 | and only the constant case should remain. That will let this | |
15285 | function complain more accurately. A few special modes are allowed | |
15286 | without complaint for global variables (for instance, global | |
15287 | register values and thread-local values). | |
c906108c SS |
15288 | |
15289 | A location description containing no operations indicates that the | |
4cecd739 | 15290 | object is optimized out. The return value is 0 for that case. |
6b992462 DJ |
15291 | FIXME drow/2003-11-16: No callers check for this case any more; soon all |
15292 | callers will only want a very basic result and this can become a | |
21ae7a4d JK |
15293 | complaint. |
15294 | ||
15295 | Note that stack[0] is unused except as a default error return. */ | |
c906108c SS |
15296 | |
15297 | static CORE_ADDR | |
e7c27a73 | 15298 | decode_locdesc (struct dwarf_block *blk, struct dwarf2_cu *cu) |
c906108c | 15299 | { |
e7c27a73 | 15300 | struct objfile *objfile = cu->objfile; |
21ae7a4d JK |
15301 | int i; |
15302 | int size = blk->size; | |
15303 | gdb_byte *data = blk->data; | |
15304 | CORE_ADDR stack[64]; | |
15305 | int stacki; | |
15306 | unsigned int bytes_read, unsnd; | |
15307 | gdb_byte op; | |
c906108c | 15308 | |
21ae7a4d JK |
15309 | i = 0; |
15310 | stacki = 0; | |
15311 | stack[stacki] = 0; | |
15312 | stack[++stacki] = 0; | |
15313 | ||
15314 | while (i < size) | |
15315 | { | |
15316 | op = data[i++]; | |
15317 | switch (op) | |
15318 | { | |
15319 | case DW_OP_lit0: | |
15320 | case DW_OP_lit1: | |
15321 | case DW_OP_lit2: | |
15322 | case DW_OP_lit3: | |
15323 | case DW_OP_lit4: | |
15324 | case DW_OP_lit5: | |
15325 | case DW_OP_lit6: | |
15326 | case DW_OP_lit7: | |
15327 | case DW_OP_lit8: | |
15328 | case DW_OP_lit9: | |
15329 | case DW_OP_lit10: | |
15330 | case DW_OP_lit11: | |
15331 | case DW_OP_lit12: | |
15332 | case DW_OP_lit13: | |
15333 | case DW_OP_lit14: | |
15334 | case DW_OP_lit15: | |
15335 | case DW_OP_lit16: | |
15336 | case DW_OP_lit17: | |
15337 | case DW_OP_lit18: | |
15338 | case DW_OP_lit19: | |
15339 | case DW_OP_lit20: | |
15340 | case DW_OP_lit21: | |
15341 | case DW_OP_lit22: | |
15342 | case DW_OP_lit23: | |
15343 | case DW_OP_lit24: | |
15344 | case DW_OP_lit25: | |
15345 | case DW_OP_lit26: | |
15346 | case DW_OP_lit27: | |
15347 | case DW_OP_lit28: | |
15348 | case DW_OP_lit29: | |
15349 | case DW_OP_lit30: | |
15350 | case DW_OP_lit31: | |
15351 | stack[++stacki] = op - DW_OP_lit0; | |
15352 | break; | |
f1bea926 | 15353 | |
21ae7a4d JK |
15354 | case DW_OP_reg0: |
15355 | case DW_OP_reg1: | |
15356 | case DW_OP_reg2: | |
15357 | case DW_OP_reg3: | |
15358 | case DW_OP_reg4: | |
15359 | case DW_OP_reg5: | |
15360 | case DW_OP_reg6: | |
15361 | case DW_OP_reg7: | |
15362 | case DW_OP_reg8: | |
15363 | case DW_OP_reg9: | |
15364 | case DW_OP_reg10: | |
15365 | case DW_OP_reg11: | |
15366 | case DW_OP_reg12: | |
15367 | case DW_OP_reg13: | |
15368 | case DW_OP_reg14: | |
15369 | case DW_OP_reg15: | |
15370 | case DW_OP_reg16: | |
15371 | case DW_OP_reg17: | |
15372 | case DW_OP_reg18: | |
15373 | case DW_OP_reg19: | |
15374 | case DW_OP_reg20: | |
15375 | case DW_OP_reg21: | |
15376 | case DW_OP_reg22: | |
15377 | case DW_OP_reg23: | |
15378 | case DW_OP_reg24: | |
15379 | case DW_OP_reg25: | |
15380 | case DW_OP_reg26: | |
15381 | case DW_OP_reg27: | |
15382 | case DW_OP_reg28: | |
15383 | case DW_OP_reg29: | |
15384 | case DW_OP_reg30: | |
15385 | case DW_OP_reg31: | |
15386 | stack[++stacki] = op - DW_OP_reg0; | |
15387 | if (i < size) | |
15388 | dwarf2_complex_location_expr_complaint (); | |
15389 | break; | |
c906108c | 15390 | |
21ae7a4d JK |
15391 | case DW_OP_regx: |
15392 | unsnd = read_unsigned_leb128 (NULL, (data + i), &bytes_read); | |
15393 | i += bytes_read; | |
15394 | stack[++stacki] = unsnd; | |
15395 | if (i < size) | |
15396 | dwarf2_complex_location_expr_complaint (); | |
15397 | break; | |
c906108c | 15398 | |
21ae7a4d JK |
15399 | case DW_OP_addr: |
15400 | stack[++stacki] = read_address (objfile->obfd, &data[i], | |
15401 | cu, &bytes_read); | |
15402 | i += bytes_read; | |
15403 | break; | |
d53d4ac5 | 15404 | |
21ae7a4d JK |
15405 | case DW_OP_const1u: |
15406 | stack[++stacki] = read_1_byte (objfile->obfd, &data[i]); | |
15407 | i += 1; | |
15408 | break; | |
15409 | ||
15410 | case DW_OP_const1s: | |
15411 | stack[++stacki] = read_1_signed_byte (objfile->obfd, &data[i]); | |
15412 | i += 1; | |
15413 | break; | |
15414 | ||
15415 | case DW_OP_const2u: | |
15416 | stack[++stacki] = read_2_bytes (objfile->obfd, &data[i]); | |
15417 | i += 2; | |
15418 | break; | |
15419 | ||
15420 | case DW_OP_const2s: | |
15421 | stack[++stacki] = read_2_signed_bytes (objfile->obfd, &data[i]); | |
15422 | i += 2; | |
15423 | break; | |
d53d4ac5 | 15424 | |
21ae7a4d JK |
15425 | case DW_OP_const4u: |
15426 | stack[++stacki] = read_4_bytes (objfile->obfd, &data[i]); | |
15427 | i += 4; | |
15428 | break; | |
15429 | ||
15430 | case DW_OP_const4s: | |
15431 | stack[++stacki] = read_4_signed_bytes (objfile->obfd, &data[i]); | |
15432 | i += 4; | |
15433 | break; | |
15434 | ||
585861ea JK |
15435 | case DW_OP_const8u: |
15436 | stack[++stacki] = read_8_bytes (objfile->obfd, &data[i]); | |
15437 | i += 8; | |
15438 | break; | |
15439 | ||
21ae7a4d JK |
15440 | case DW_OP_constu: |
15441 | stack[++stacki] = read_unsigned_leb128 (NULL, (data + i), | |
15442 | &bytes_read); | |
15443 | i += bytes_read; | |
15444 | break; | |
15445 | ||
15446 | case DW_OP_consts: | |
15447 | stack[++stacki] = read_signed_leb128 (NULL, (data + i), &bytes_read); | |
15448 | i += bytes_read; | |
15449 | break; | |
15450 | ||
15451 | case DW_OP_dup: | |
15452 | stack[stacki + 1] = stack[stacki]; | |
15453 | stacki++; | |
15454 | break; | |
15455 | ||
15456 | case DW_OP_plus: | |
15457 | stack[stacki - 1] += stack[stacki]; | |
15458 | stacki--; | |
15459 | break; | |
15460 | ||
15461 | case DW_OP_plus_uconst: | |
15462 | stack[stacki] += read_unsigned_leb128 (NULL, (data + i), | |
15463 | &bytes_read); | |
15464 | i += bytes_read; | |
15465 | break; | |
15466 | ||
15467 | case DW_OP_minus: | |
15468 | stack[stacki - 1] -= stack[stacki]; | |
15469 | stacki--; | |
15470 | break; | |
15471 | ||
15472 | case DW_OP_deref: | |
15473 | /* If we're not the last op, then we definitely can't encode | |
15474 | this using GDB's address_class enum. This is valid for partial | |
15475 | global symbols, although the variable's address will be bogus | |
15476 | in the psymtab. */ | |
15477 | if (i < size) | |
15478 | dwarf2_complex_location_expr_complaint (); | |
15479 | break; | |
15480 | ||
15481 | case DW_OP_GNU_push_tls_address: | |
15482 | /* The top of the stack has the offset from the beginning | |
15483 | of the thread control block at which the variable is located. */ | |
15484 | /* Nothing should follow this operator, so the top of stack would | |
15485 | be returned. */ | |
15486 | /* This is valid for partial global symbols, but the variable's | |
585861ea JK |
15487 | address will be bogus in the psymtab. Make it always at least |
15488 | non-zero to not look as a variable garbage collected by linker | |
15489 | which have DW_OP_addr 0. */ | |
21ae7a4d JK |
15490 | if (i < size) |
15491 | dwarf2_complex_location_expr_complaint (); | |
585861ea | 15492 | stack[stacki]++; |
21ae7a4d JK |
15493 | break; |
15494 | ||
15495 | case DW_OP_GNU_uninit: | |
15496 | break; | |
15497 | ||
3019eac3 DE |
15498 | case DW_OP_GNU_addr_index: |
15499 | stack[++stacki] = read_addr_index_from_leb128 (cu, &data[i], | |
15500 | &bytes_read); | |
15501 | i += bytes_read; | |
15502 | break; | |
15503 | ||
21ae7a4d JK |
15504 | default: |
15505 | { | |
f39c6ffd | 15506 | const char *name = get_DW_OP_name (op); |
21ae7a4d JK |
15507 | |
15508 | if (name) | |
15509 | complaint (&symfile_complaints, _("unsupported stack op: '%s'"), | |
15510 | name); | |
15511 | else | |
15512 | complaint (&symfile_complaints, _("unsupported stack op: '%02x'"), | |
15513 | op); | |
15514 | } | |
15515 | ||
15516 | return (stack[stacki]); | |
d53d4ac5 | 15517 | } |
3c6e0cb3 | 15518 | |
21ae7a4d JK |
15519 | /* Enforce maximum stack depth of SIZE-1 to avoid writing |
15520 | outside of the allocated space. Also enforce minimum>0. */ | |
15521 | if (stacki >= ARRAY_SIZE (stack) - 1) | |
15522 | { | |
15523 | complaint (&symfile_complaints, | |
15524 | _("location description stack overflow")); | |
15525 | return 0; | |
15526 | } | |
15527 | ||
15528 | if (stacki <= 0) | |
15529 | { | |
15530 | complaint (&symfile_complaints, | |
15531 | _("location description stack underflow")); | |
15532 | return 0; | |
15533 | } | |
15534 | } | |
15535 | return (stack[stacki]); | |
c906108c SS |
15536 | } |
15537 | ||
15538 | /* memory allocation interface */ | |
15539 | ||
c906108c | 15540 | static struct dwarf_block * |
7b5a2f43 | 15541 | dwarf_alloc_block (struct dwarf2_cu *cu) |
c906108c SS |
15542 | { |
15543 | struct dwarf_block *blk; | |
15544 | ||
15545 | blk = (struct dwarf_block *) | |
7b5a2f43 | 15546 | obstack_alloc (&cu->comp_unit_obstack, sizeof (struct dwarf_block)); |
c906108c SS |
15547 | return (blk); |
15548 | } | |
15549 | ||
15550 | static struct abbrev_info * | |
f3dd6933 | 15551 | dwarf_alloc_abbrev (struct dwarf2_cu *cu) |
c906108c SS |
15552 | { |
15553 | struct abbrev_info *abbrev; | |
15554 | ||
f3dd6933 DJ |
15555 | abbrev = (struct abbrev_info *) |
15556 | obstack_alloc (&cu->abbrev_obstack, sizeof (struct abbrev_info)); | |
c906108c SS |
15557 | memset (abbrev, 0, sizeof (struct abbrev_info)); |
15558 | return (abbrev); | |
15559 | } | |
15560 | ||
15561 | static struct die_info * | |
b60c80d6 | 15562 | dwarf_alloc_die (struct dwarf2_cu *cu, int num_attrs) |
c906108c SS |
15563 | { |
15564 | struct die_info *die; | |
b60c80d6 DJ |
15565 | size_t size = sizeof (struct die_info); |
15566 | ||
15567 | if (num_attrs > 1) | |
15568 | size += (num_attrs - 1) * sizeof (struct attribute); | |
c906108c | 15569 | |
b60c80d6 | 15570 | die = (struct die_info *) obstack_alloc (&cu->comp_unit_obstack, size); |
c906108c SS |
15571 | memset (die, 0, sizeof (struct die_info)); |
15572 | return (die); | |
15573 | } | |
2e276125 JB |
15574 | |
15575 | \f | |
15576 | /* Macro support. */ | |
15577 | ||
2e276125 JB |
15578 | /* Return the full name of file number I in *LH's file name table. |
15579 | Use COMP_DIR as the name of the current directory of the | |
15580 | compilation. The result is allocated using xmalloc; the caller is | |
15581 | responsible for freeing it. */ | |
15582 | static char * | |
15583 | file_full_name (int file, struct line_header *lh, const char *comp_dir) | |
15584 | { | |
6a83a1e6 EZ |
15585 | /* Is the file number a valid index into the line header's file name |
15586 | table? Remember that file numbers start with one, not zero. */ | |
15587 | if (1 <= file && file <= lh->num_file_names) | |
15588 | { | |
15589 | struct file_entry *fe = &lh->file_names[file - 1]; | |
6e70227d | 15590 | |
6a83a1e6 EZ |
15591 | if (IS_ABSOLUTE_PATH (fe->name)) |
15592 | return xstrdup (fe->name); | |
15593 | else | |
15594 | { | |
15595 | const char *dir; | |
15596 | int dir_len; | |
15597 | char *full_name; | |
15598 | ||
15599 | if (fe->dir_index) | |
15600 | dir = lh->include_dirs[fe->dir_index - 1]; | |
15601 | else | |
15602 | dir = comp_dir; | |
15603 | ||
15604 | if (dir) | |
15605 | { | |
15606 | dir_len = strlen (dir); | |
15607 | full_name = xmalloc (dir_len + 1 + strlen (fe->name) + 1); | |
15608 | strcpy (full_name, dir); | |
15609 | full_name[dir_len] = '/'; | |
15610 | strcpy (full_name + dir_len + 1, fe->name); | |
15611 | return full_name; | |
15612 | } | |
15613 | else | |
15614 | return xstrdup (fe->name); | |
15615 | } | |
15616 | } | |
2e276125 JB |
15617 | else |
15618 | { | |
6a83a1e6 EZ |
15619 | /* The compiler produced a bogus file number. We can at least |
15620 | record the macro definitions made in the file, even if we | |
15621 | won't be able to find the file by name. */ | |
15622 | char fake_name[80]; | |
9a619af0 | 15623 | |
6a83a1e6 | 15624 | sprintf (fake_name, "<bad macro file number %d>", file); |
2e276125 | 15625 | |
6e70227d | 15626 | complaint (&symfile_complaints, |
6a83a1e6 EZ |
15627 | _("bad file number in macro information (%d)"), |
15628 | file); | |
2e276125 | 15629 | |
6a83a1e6 | 15630 | return xstrdup (fake_name); |
2e276125 JB |
15631 | } |
15632 | } | |
15633 | ||
15634 | ||
15635 | static struct macro_source_file * | |
15636 | macro_start_file (int file, int line, | |
15637 | struct macro_source_file *current_file, | |
15638 | const char *comp_dir, | |
15639 | struct line_header *lh, struct objfile *objfile) | |
15640 | { | |
15641 | /* The full name of this source file. */ | |
15642 | char *full_name = file_full_name (file, lh, comp_dir); | |
15643 | ||
15644 | /* We don't create a macro table for this compilation unit | |
15645 | at all until we actually get a filename. */ | |
15646 | if (! pending_macros) | |
4a146b47 | 15647 | pending_macros = new_macro_table (&objfile->objfile_obstack, |
af5f3db6 | 15648 | objfile->macro_cache); |
2e276125 JB |
15649 | |
15650 | if (! current_file) | |
abc9d0dc TT |
15651 | { |
15652 | /* If we have no current file, then this must be the start_file | |
15653 | directive for the compilation unit's main source file. */ | |
15654 | current_file = macro_set_main (pending_macros, full_name); | |
15655 | macro_define_special (pending_macros); | |
15656 | } | |
2e276125 JB |
15657 | else |
15658 | current_file = macro_include (current_file, line, full_name); | |
15659 | ||
15660 | xfree (full_name); | |
6e70227d | 15661 | |
2e276125 JB |
15662 | return current_file; |
15663 | } | |
15664 | ||
15665 | ||
15666 | /* Copy the LEN characters at BUF to a xmalloc'ed block of memory, | |
15667 | followed by a null byte. */ | |
15668 | static char * | |
15669 | copy_string (const char *buf, int len) | |
15670 | { | |
15671 | char *s = xmalloc (len + 1); | |
9a619af0 | 15672 | |
2e276125 JB |
15673 | memcpy (s, buf, len); |
15674 | s[len] = '\0'; | |
2e276125 JB |
15675 | return s; |
15676 | } | |
15677 | ||
15678 | ||
15679 | static const char * | |
15680 | consume_improper_spaces (const char *p, const char *body) | |
15681 | { | |
15682 | if (*p == ' ') | |
15683 | { | |
4d3c2250 | 15684 | complaint (&symfile_complaints, |
3e43a32a MS |
15685 | _("macro definition contains spaces " |
15686 | "in formal argument list:\n`%s'"), | |
4d3c2250 | 15687 | body); |
2e276125 JB |
15688 | |
15689 | while (*p == ' ') | |
15690 | p++; | |
15691 | } | |
15692 | ||
15693 | return p; | |
15694 | } | |
15695 | ||
15696 | ||
15697 | static void | |
15698 | parse_macro_definition (struct macro_source_file *file, int line, | |
15699 | const char *body) | |
15700 | { | |
15701 | const char *p; | |
15702 | ||
15703 | /* The body string takes one of two forms. For object-like macro | |
15704 | definitions, it should be: | |
15705 | ||
15706 | <macro name> " " <definition> | |
15707 | ||
15708 | For function-like macro definitions, it should be: | |
15709 | ||
15710 | <macro name> "() " <definition> | |
15711 | or | |
15712 | <macro name> "(" <arg name> ( "," <arg name> ) * ") " <definition> | |
15713 | ||
15714 | Spaces may appear only where explicitly indicated, and in the | |
15715 | <definition>. | |
15716 | ||
15717 | The Dwarf 2 spec says that an object-like macro's name is always | |
15718 | followed by a space, but versions of GCC around March 2002 omit | |
6e70227d | 15719 | the space when the macro's definition is the empty string. |
2e276125 JB |
15720 | |
15721 | The Dwarf 2 spec says that there should be no spaces between the | |
15722 | formal arguments in a function-like macro's formal argument list, | |
15723 | but versions of GCC around March 2002 include spaces after the | |
15724 | commas. */ | |
15725 | ||
15726 | ||
15727 | /* Find the extent of the macro name. The macro name is terminated | |
15728 | by either a space or null character (for an object-like macro) or | |
15729 | an opening paren (for a function-like macro). */ | |
15730 | for (p = body; *p; p++) | |
15731 | if (*p == ' ' || *p == '(') | |
15732 | break; | |
15733 | ||
15734 | if (*p == ' ' || *p == '\0') | |
15735 | { | |
15736 | /* It's an object-like macro. */ | |
15737 | int name_len = p - body; | |
15738 | char *name = copy_string (body, name_len); | |
15739 | const char *replacement; | |
15740 | ||
15741 | if (*p == ' ') | |
15742 | replacement = body + name_len + 1; | |
15743 | else | |
15744 | { | |
4d3c2250 | 15745 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
15746 | replacement = body + name_len; |
15747 | } | |
6e70227d | 15748 | |
2e276125 JB |
15749 | macro_define_object (file, line, name, replacement); |
15750 | ||
15751 | xfree (name); | |
15752 | } | |
15753 | else if (*p == '(') | |
15754 | { | |
15755 | /* It's a function-like macro. */ | |
15756 | char *name = copy_string (body, p - body); | |
15757 | int argc = 0; | |
15758 | int argv_size = 1; | |
15759 | char **argv = xmalloc (argv_size * sizeof (*argv)); | |
15760 | ||
15761 | p++; | |
15762 | ||
15763 | p = consume_improper_spaces (p, body); | |
15764 | ||
15765 | /* Parse the formal argument list. */ | |
15766 | while (*p && *p != ')') | |
15767 | { | |
15768 | /* Find the extent of the current argument name. */ | |
15769 | const char *arg_start = p; | |
15770 | ||
15771 | while (*p && *p != ',' && *p != ')' && *p != ' ') | |
15772 | p++; | |
15773 | ||
15774 | if (! *p || p == arg_start) | |
4d3c2250 | 15775 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
15776 | else |
15777 | { | |
15778 | /* Make sure argv has room for the new argument. */ | |
15779 | if (argc >= argv_size) | |
15780 | { | |
15781 | argv_size *= 2; | |
15782 | argv = xrealloc (argv, argv_size * sizeof (*argv)); | |
15783 | } | |
15784 | ||
15785 | argv[argc++] = copy_string (arg_start, p - arg_start); | |
15786 | } | |
15787 | ||
15788 | p = consume_improper_spaces (p, body); | |
15789 | ||
15790 | /* Consume the comma, if present. */ | |
15791 | if (*p == ',') | |
15792 | { | |
15793 | p++; | |
15794 | ||
15795 | p = consume_improper_spaces (p, body); | |
15796 | } | |
15797 | } | |
15798 | ||
15799 | if (*p == ')') | |
15800 | { | |
15801 | p++; | |
15802 | ||
15803 | if (*p == ' ') | |
15804 | /* Perfectly formed definition, no complaints. */ | |
15805 | macro_define_function (file, line, name, | |
6e70227d | 15806 | argc, (const char **) argv, |
2e276125 JB |
15807 | p + 1); |
15808 | else if (*p == '\0') | |
15809 | { | |
15810 | /* Complain, but do define it. */ | |
4d3c2250 | 15811 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 | 15812 | macro_define_function (file, line, name, |
6e70227d | 15813 | argc, (const char **) argv, |
2e276125 JB |
15814 | p); |
15815 | } | |
15816 | else | |
15817 | /* Just complain. */ | |
4d3c2250 | 15818 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
15819 | } |
15820 | else | |
15821 | /* Just complain. */ | |
4d3c2250 | 15822 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
15823 | |
15824 | xfree (name); | |
15825 | { | |
15826 | int i; | |
15827 | ||
15828 | for (i = 0; i < argc; i++) | |
15829 | xfree (argv[i]); | |
15830 | } | |
15831 | xfree (argv); | |
15832 | } | |
15833 | else | |
4d3c2250 | 15834 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
15835 | } |
15836 | ||
cf2c3c16 TT |
15837 | /* Skip some bytes from BYTES according to the form given in FORM. |
15838 | Returns the new pointer. */ | |
2e276125 | 15839 | |
cf2c3c16 | 15840 | static gdb_byte * |
f664829e | 15841 | skip_form_bytes (bfd *abfd, gdb_byte *bytes, gdb_byte *buffer_end, |
cf2c3c16 TT |
15842 | enum dwarf_form form, |
15843 | unsigned int offset_size, | |
15844 | struct dwarf2_section_info *section) | |
2e276125 | 15845 | { |
cf2c3c16 | 15846 | unsigned int bytes_read; |
2e276125 | 15847 | |
cf2c3c16 | 15848 | switch (form) |
2e276125 | 15849 | { |
cf2c3c16 TT |
15850 | case DW_FORM_data1: |
15851 | case DW_FORM_flag: | |
15852 | ++bytes; | |
15853 | break; | |
15854 | ||
15855 | case DW_FORM_data2: | |
15856 | bytes += 2; | |
15857 | break; | |
15858 | ||
15859 | case DW_FORM_data4: | |
15860 | bytes += 4; | |
15861 | break; | |
15862 | ||
15863 | case DW_FORM_data8: | |
15864 | bytes += 8; | |
15865 | break; | |
15866 | ||
15867 | case DW_FORM_string: | |
15868 | read_direct_string (abfd, bytes, &bytes_read); | |
15869 | bytes += bytes_read; | |
15870 | break; | |
15871 | ||
15872 | case DW_FORM_sec_offset: | |
15873 | case DW_FORM_strp: | |
15874 | bytes += offset_size; | |
15875 | break; | |
15876 | ||
15877 | case DW_FORM_block: | |
15878 | bytes += read_unsigned_leb128 (abfd, bytes, &bytes_read); | |
15879 | bytes += bytes_read; | |
15880 | break; | |
15881 | ||
15882 | case DW_FORM_block1: | |
15883 | bytes += 1 + read_1_byte (abfd, bytes); | |
15884 | break; | |
15885 | case DW_FORM_block2: | |
15886 | bytes += 2 + read_2_bytes (abfd, bytes); | |
15887 | break; | |
15888 | case DW_FORM_block4: | |
15889 | bytes += 4 + read_4_bytes (abfd, bytes); | |
15890 | break; | |
15891 | ||
15892 | case DW_FORM_sdata: | |
15893 | case DW_FORM_udata: | |
3019eac3 DE |
15894 | case DW_FORM_GNU_addr_index: |
15895 | case DW_FORM_GNU_str_index: | |
f664829e DE |
15896 | bytes = (gdb_byte *) gdb_skip_leb128 (bytes, buffer_end); |
15897 | if (bytes == NULL) | |
15898 | { | |
15899 | dwarf2_section_buffer_overflow_complaint (section); | |
15900 | return NULL; | |
15901 | } | |
cf2c3c16 TT |
15902 | break; |
15903 | ||
15904 | default: | |
15905 | { | |
15906 | complain: | |
15907 | complaint (&symfile_complaints, | |
15908 | _("invalid form 0x%x in `%s'"), | |
15909 | form, | |
15910 | section->asection->name); | |
15911 | return NULL; | |
15912 | } | |
2e276125 JB |
15913 | } |
15914 | ||
cf2c3c16 TT |
15915 | return bytes; |
15916 | } | |
757a13d0 | 15917 | |
cf2c3c16 TT |
15918 | /* A helper for dwarf_decode_macros that handles skipping an unknown |
15919 | opcode. Returns an updated pointer to the macro data buffer; or, | |
15920 | on error, issues a complaint and returns NULL. */ | |
757a13d0 | 15921 | |
cf2c3c16 TT |
15922 | static gdb_byte * |
15923 | skip_unknown_opcode (unsigned int opcode, | |
15924 | gdb_byte **opcode_definitions, | |
f664829e | 15925 | gdb_byte *mac_ptr, gdb_byte *mac_end, |
cf2c3c16 TT |
15926 | bfd *abfd, |
15927 | unsigned int offset_size, | |
15928 | struct dwarf2_section_info *section) | |
15929 | { | |
15930 | unsigned int bytes_read, i; | |
15931 | unsigned long arg; | |
15932 | gdb_byte *defn; | |
2e276125 | 15933 | |
cf2c3c16 | 15934 | if (opcode_definitions[opcode] == NULL) |
2e276125 | 15935 | { |
cf2c3c16 TT |
15936 | complaint (&symfile_complaints, |
15937 | _("unrecognized DW_MACFINO opcode 0x%x"), | |
15938 | opcode); | |
15939 | return NULL; | |
15940 | } | |
2e276125 | 15941 | |
cf2c3c16 TT |
15942 | defn = opcode_definitions[opcode]; |
15943 | arg = read_unsigned_leb128 (abfd, defn, &bytes_read); | |
15944 | defn += bytes_read; | |
2e276125 | 15945 | |
cf2c3c16 TT |
15946 | for (i = 0; i < arg; ++i) |
15947 | { | |
f664829e DE |
15948 | mac_ptr = skip_form_bytes (abfd, mac_ptr, mac_end, defn[i], offset_size, |
15949 | section); | |
cf2c3c16 TT |
15950 | if (mac_ptr == NULL) |
15951 | { | |
15952 | /* skip_form_bytes already issued the complaint. */ | |
15953 | return NULL; | |
15954 | } | |
15955 | } | |
757a13d0 | 15956 | |
cf2c3c16 TT |
15957 | return mac_ptr; |
15958 | } | |
757a13d0 | 15959 | |
cf2c3c16 TT |
15960 | /* A helper function which parses the header of a macro section. |
15961 | If the macro section is the extended (for now called "GNU") type, | |
15962 | then this updates *OFFSET_SIZE. Returns a pointer to just after | |
15963 | the header, or issues a complaint and returns NULL on error. */ | |
757a13d0 | 15964 | |
cf2c3c16 TT |
15965 | static gdb_byte * |
15966 | dwarf_parse_macro_header (gdb_byte **opcode_definitions, | |
15967 | bfd *abfd, | |
15968 | gdb_byte *mac_ptr, | |
15969 | unsigned int *offset_size, | |
15970 | int section_is_gnu) | |
15971 | { | |
15972 | memset (opcode_definitions, 0, 256 * sizeof (gdb_byte *)); | |
757a13d0 | 15973 | |
cf2c3c16 TT |
15974 | if (section_is_gnu) |
15975 | { | |
15976 | unsigned int version, flags; | |
757a13d0 | 15977 | |
cf2c3c16 TT |
15978 | version = read_2_bytes (abfd, mac_ptr); |
15979 | if (version != 4) | |
15980 | { | |
15981 | complaint (&symfile_complaints, | |
15982 | _("unrecognized version `%d' in .debug_macro section"), | |
15983 | version); | |
15984 | return NULL; | |
15985 | } | |
15986 | mac_ptr += 2; | |
757a13d0 | 15987 | |
cf2c3c16 TT |
15988 | flags = read_1_byte (abfd, mac_ptr); |
15989 | ++mac_ptr; | |
15990 | *offset_size = (flags & 1) ? 8 : 4; | |
757a13d0 | 15991 | |
cf2c3c16 TT |
15992 | if ((flags & 2) != 0) |
15993 | /* We don't need the line table offset. */ | |
15994 | mac_ptr += *offset_size; | |
757a13d0 | 15995 | |
cf2c3c16 TT |
15996 | /* Vendor opcode descriptions. */ |
15997 | if ((flags & 4) != 0) | |
15998 | { | |
15999 | unsigned int i, count; | |
757a13d0 | 16000 | |
cf2c3c16 TT |
16001 | count = read_1_byte (abfd, mac_ptr); |
16002 | ++mac_ptr; | |
16003 | for (i = 0; i < count; ++i) | |
16004 | { | |
16005 | unsigned int opcode, bytes_read; | |
16006 | unsigned long arg; | |
16007 | ||
16008 | opcode = read_1_byte (abfd, mac_ptr); | |
16009 | ++mac_ptr; | |
16010 | opcode_definitions[opcode] = mac_ptr; | |
16011 | arg = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
16012 | mac_ptr += bytes_read; | |
16013 | mac_ptr += arg; | |
16014 | } | |
757a13d0 | 16015 | } |
cf2c3c16 | 16016 | } |
757a13d0 | 16017 | |
cf2c3c16 TT |
16018 | return mac_ptr; |
16019 | } | |
757a13d0 | 16020 | |
cf2c3c16 | 16021 | /* A helper for dwarf_decode_macros that handles the GNU extensions, |
8fc3fc34 | 16022 | including DW_MACRO_GNU_transparent_include. */ |
cf2c3c16 TT |
16023 | |
16024 | static void | |
16025 | dwarf_decode_macro_bytes (bfd *abfd, gdb_byte *mac_ptr, gdb_byte *mac_end, | |
16026 | struct macro_source_file *current_file, | |
16027 | struct line_header *lh, char *comp_dir, | |
16028 | struct dwarf2_section_info *section, | |
16029 | int section_is_gnu, | |
16030 | unsigned int offset_size, | |
8fc3fc34 TT |
16031 | struct objfile *objfile, |
16032 | htab_t include_hash) | |
cf2c3c16 TT |
16033 | { |
16034 | enum dwarf_macro_record_type macinfo_type; | |
16035 | int at_commandline; | |
16036 | gdb_byte *opcode_definitions[256]; | |
757a13d0 | 16037 | |
cf2c3c16 TT |
16038 | mac_ptr = dwarf_parse_macro_header (opcode_definitions, abfd, mac_ptr, |
16039 | &offset_size, section_is_gnu); | |
16040 | if (mac_ptr == NULL) | |
16041 | { | |
16042 | /* We already issued a complaint. */ | |
16043 | return; | |
16044 | } | |
757a13d0 JK |
16045 | |
16046 | /* Determines if GDB is still before first DW_MACINFO_start_file. If true | |
16047 | GDB is still reading the definitions from command line. First | |
16048 | DW_MACINFO_start_file will need to be ignored as it was already executed | |
16049 | to create CURRENT_FILE for the main source holding also the command line | |
16050 | definitions. On first met DW_MACINFO_start_file this flag is reset to | |
16051 | normally execute all the remaining DW_MACINFO_start_file macinfos. */ | |
16052 | ||
16053 | at_commandline = 1; | |
16054 | ||
16055 | do | |
16056 | { | |
16057 | /* Do we at least have room for a macinfo type byte? */ | |
16058 | if (mac_ptr >= mac_end) | |
16059 | { | |
f664829e | 16060 | dwarf2_section_buffer_overflow_complaint (section); |
757a13d0 JK |
16061 | break; |
16062 | } | |
16063 | ||
16064 | macinfo_type = read_1_byte (abfd, mac_ptr); | |
16065 | mac_ptr++; | |
16066 | ||
cf2c3c16 TT |
16067 | /* Note that we rely on the fact that the corresponding GNU and |
16068 | DWARF constants are the same. */ | |
757a13d0 JK |
16069 | switch (macinfo_type) |
16070 | { | |
16071 | /* A zero macinfo type indicates the end of the macro | |
16072 | information. */ | |
16073 | case 0: | |
16074 | break; | |
2e276125 | 16075 | |
cf2c3c16 TT |
16076 | case DW_MACRO_GNU_define: |
16077 | case DW_MACRO_GNU_undef: | |
16078 | case DW_MACRO_GNU_define_indirect: | |
16079 | case DW_MACRO_GNU_undef_indirect: | |
2e276125 | 16080 | { |
891d2f0b | 16081 | unsigned int bytes_read; |
2e276125 JB |
16082 | int line; |
16083 | char *body; | |
cf2c3c16 | 16084 | int is_define; |
2e276125 | 16085 | |
cf2c3c16 TT |
16086 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); |
16087 | mac_ptr += bytes_read; | |
16088 | ||
16089 | if (macinfo_type == DW_MACRO_GNU_define | |
16090 | || macinfo_type == DW_MACRO_GNU_undef) | |
16091 | { | |
16092 | body = read_direct_string (abfd, mac_ptr, &bytes_read); | |
16093 | mac_ptr += bytes_read; | |
16094 | } | |
16095 | else | |
16096 | { | |
16097 | LONGEST str_offset; | |
16098 | ||
16099 | str_offset = read_offset_1 (abfd, mac_ptr, offset_size); | |
16100 | mac_ptr += offset_size; | |
2e276125 | 16101 | |
cf2c3c16 TT |
16102 | body = read_indirect_string_at_offset (abfd, str_offset); |
16103 | } | |
16104 | ||
16105 | is_define = (macinfo_type == DW_MACRO_GNU_define | |
16106 | || macinfo_type == DW_MACRO_GNU_define_indirect); | |
2e276125 | 16107 | if (! current_file) |
757a13d0 JK |
16108 | { |
16109 | /* DWARF violation as no main source is present. */ | |
16110 | complaint (&symfile_complaints, | |
16111 | _("debug info with no main source gives macro %s " | |
16112 | "on line %d: %s"), | |
cf2c3c16 TT |
16113 | is_define ? _("definition") : _("undefinition"), |
16114 | line, body); | |
757a13d0 JK |
16115 | break; |
16116 | } | |
3e43a32a MS |
16117 | if ((line == 0 && !at_commandline) |
16118 | || (line != 0 && at_commandline)) | |
4d3c2250 | 16119 | complaint (&symfile_complaints, |
757a13d0 JK |
16120 | _("debug info gives %s macro %s with %s line %d: %s"), |
16121 | at_commandline ? _("command-line") : _("in-file"), | |
cf2c3c16 | 16122 | is_define ? _("definition") : _("undefinition"), |
757a13d0 JK |
16123 | line == 0 ? _("zero") : _("non-zero"), line, body); |
16124 | ||
cf2c3c16 | 16125 | if (is_define) |
757a13d0 | 16126 | parse_macro_definition (current_file, line, body); |
cf2c3c16 TT |
16127 | else |
16128 | { | |
16129 | gdb_assert (macinfo_type == DW_MACRO_GNU_undef | |
16130 | || macinfo_type == DW_MACRO_GNU_undef_indirect); | |
16131 | macro_undef (current_file, line, body); | |
16132 | } | |
2e276125 JB |
16133 | } |
16134 | break; | |
16135 | ||
cf2c3c16 | 16136 | case DW_MACRO_GNU_start_file: |
2e276125 | 16137 | { |
891d2f0b | 16138 | unsigned int bytes_read; |
2e276125 JB |
16139 | int line, file; |
16140 | ||
16141 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
16142 | mac_ptr += bytes_read; | |
16143 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
16144 | mac_ptr += bytes_read; | |
16145 | ||
3e43a32a MS |
16146 | if ((line == 0 && !at_commandline) |
16147 | || (line != 0 && at_commandline)) | |
757a13d0 JK |
16148 | complaint (&symfile_complaints, |
16149 | _("debug info gives source %d included " | |
16150 | "from %s at %s line %d"), | |
16151 | file, at_commandline ? _("command-line") : _("file"), | |
16152 | line == 0 ? _("zero") : _("non-zero"), line); | |
16153 | ||
16154 | if (at_commandline) | |
16155 | { | |
cf2c3c16 TT |
16156 | /* This DW_MACRO_GNU_start_file was executed in the |
16157 | pass one. */ | |
757a13d0 JK |
16158 | at_commandline = 0; |
16159 | } | |
16160 | else | |
16161 | current_file = macro_start_file (file, line, | |
16162 | current_file, comp_dir, | |
cf2c3c16 | 16163 | lh, objfile); |
2e276125 JB |
16164 | } |
16165 | break; | |
16166 | ||
cf2c3c16 | 16167 | case DW_MACRO_GNU_end_file: |
2e276125 | 16168 | if (! current_file) |
4d3c2250 | 16169 | complaint (&symfile_complaints, |
3e43a32a MS |
16170 | _("macro debug info has an unmatched " |
16171 | "`close_file' directive")); | |
2e276125 JB |
16172 | else |
16173 | { | |
16174 | current_file = current_file->included_by; | |
16175 | if (! current_file) | |
16176 | { | |
cf2c3c16 | 16177 | enum dwarf_macro_record_type next_type; |
2e276125 JB |
16178 | |
16179 | /* GCC circa March 2002 doesn't produce the zero | |
16180 | type byte marking the end of the compilation | |
16181 | unit. Complain if it's not there, but exit no | |
16182 | matter what. */ | |
16183 | ||
16184 | /* Do we at least have room for a macinfo type byte? */ | |
16185 | if (mac_ptr >= mac_end) | |
16186 | { | |
f664829e | 16187 | dwarf2_section_buffer_overflow_complaint (section); |
2e276125 JB |
16188 | return; |
16189 | } | |
16190 | ||
16191 | /* We don't increment mac_ptr here, so this is just | |
16192 | a look-ahead. */ | |
16193 | next_type = read_1_byte (abfd, mac_ptr); | |
16194 | if (next_type != 0) | |
4d3c2250 | 16195 | complaint (&symfile_complaints, |
3e43a32a MS |
16196 | _("no terminating 0-type entry for " |
16197 | "macros in `.debug_macinfo' section")); | |
2e276125 JB |
16198 | |
16199 | return; | |
16200 | } | |
16201 | } | |
16202 | break; | |
16203 | ||
cf2c3c16 TT |
16204 | case DW_MACRO_GNU_transparent_include: |
16205 | { | |
16206 | LONGEST offset; | |
8fc3fc34 | 16207 | void **slot; |
cf2c3c16 TT |
16208 | |
16209 | offset = read_offset_1 (abfd, mac_ptr, offset_size); | |
16210 | mac_ptr += offset_size; | |
16211 | ||
8fc3fc34 TT |
16212 | slot = htab_find_slot (include_hash, mac_ptr, INSERT); |
16213 | if (*slot != NULL) | |
16214 | { | |
16215 | /* This has actually happened; see | |
16216 | http://sourceware.org/bugzilla/show_bug.cgi?id=13568. */ | |
16217 | complaint (&symfile_complaints, | |
16218 | _("recursive DW_MACRO_GNU_transparent_include in " | |
16219 | ".debug_macro section")); | |
16220 | } | |
16221 | else | |
16222 | { | |
16223 | *slot = mac_ptr; | |
16224 | ||
16225 | dwarf_decode_macro_bytes (abfd, | |
16226 | section->buffer + offset, | |
16227 | mac_end, current_file, | |
16228 | lh, comp_dir, | |
16229 | section, section_is_gnu, | |
16230 | offset_size, objfile, include_hash); | |
16231 | ||
16232 | htab_remove_elt (include_hash, mac_ptr); | |
16233 | } | |
cf2c3c16 TT |
16234 | } |
16235 | break; | |
16236 | ||
2e276125 | 16237 | case DW_MACINFO_vendor_ext: |
cf2c3c16 TT |
16238 | if (!section_is_gnu) |
16239 | { | |
16240 | unsigned int bytes_read; | |
16241 | int constant; | |
2e276125 | 16242 | |
cf2c3c16 TT |
16243 | constant = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); |
16244 | mac_ptr += bytes_read; | |
16245 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
16246 | mac_ptr += bytes_read; | |
2e276125 | 16247 | |
cf2c3c16 TT |
16248 | /* We don't recognize any vendor extensions. */ |
16249 | break; | |
16250 | } | |
16251 | /* FALLTHROUGH */ | |
16252 | ||
16253 | default: | |
16254 | mac_ptr = skip_unknown_opcode (macinfo_type, opcode_definitions, | |
f664829e | 16255 | mac_ptr, mac_end, abfd, offset_size, |
cf2c3c16 TT |
16256 | section); |
16257 | if (mac_ptr == NULL) | |
16258 | return; | |
16259 | break; | |
2e276125 | 16260 | } |
757a13d0 | 16261 | } while (macinfo_type != 0); |
2e276125 | 16262 | } |
8e19ed76 | 16263 | |
cf2c3c16 TT |
16264 | static void |
16265 | dwarf_decode_macros (struct line_header *lh, unsigned int offset, | |
16266 | char *comp_dir, bfd *abfd, | |
16267 | struct dwarf2_cu *cu, | |
16268 | struct dwarf2_section_info *section, | |
fceca515 | 16269 | int section_is_gnu, const char *section_name) |
cf2c3c16 | 16270 | { |
bb5ed363 | 16271 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
cf2c3c16 TT |
16272 | gdb_byte *mac_ptr, *mac_end; |
16273 | struct macro_source_file *current_file = 0; | |
16274 | enum dwarf_macro_record_type macinfo_type; | |
16275 | unsigned int offset_size = cu->header.offset_size; | |
16276 | gdb_byte *opcode_definitions[256]; | |
8fc3fc34 TT |
16277 | struct cleanup *cleanup; |
16278 | htab_t include_hash; | |
16279 | void **slot; | |
cf2c3c16 | 16280 | |
bb5ed363 | 16281 | dwarf2_read_section (objfile, section); |
cf2c3c16 TT |
16282 | if (section->buffer == NULL) |
16283 | { | |
fceca515 | 16284 | complaint (&symfile_complaints, _("missing %s section"), section_name); |
cf2c3c16 TT |
16285 | return; |
16286 | } | |
16287 | ||
16288 | /* First pass: Find the name of the base filename. | |
16289 | This filename is needed in order to process all macros whose definition | |
16290 | (or undefinition) comes from the command line. These macros are defined | |
16291 | before the first DW_MACINFO_start_file entry, and yet still need to be | |
16292 | associated to the base file. | |
16293 | ||
16294 | To determine the base file name, we scan the macro definitions until we | |
16295 | reach the first DW_MACINFO_start_file entry. We then initialize | |
16296 | CURRENT_FILE accordingly so that any macro definition found before the | |
16297 | first DW_MACINFO_start_file can still be associated to the base file. */ | |
16298 | ||
16299 | mac_ptr = section->buffer + offset; | |
16300 | mac_end = section->buffer + section->size; | |
16301 | ||
16302 | mac_ptr = dwarf_parse_macro_header (opcode_definitions, abfd, mac_ptr, | |
16303 | &offset_size, section_is_gnu); | |
16304 | if (mac_ptr == NULL) | |
16305 | { | |
16306 | /* We already issued a complaint. */ | |
16307 | return; | |
16308 | } | |
16309 | ||
16310 | do | |
16311 | { | |
16312 | /* Do we at least have room for a macinfo type byte? */ | |
16313 | if (mac_ptr >= mac_end) | |
16314 | { | |
16315 | /* Complaint is printed during the second pass as GDB will probably | |
16316 | stop the first pass earlier upon finding | |
16317 | DW_MACINFO_start_file. */ | |
16318 | break; | |
16319 | } | |
16320 | ||
16321 | macinfo_type = read_1_byte (abfd, mac_ptr); | |
16322 | mac_ptr++; | |
16323 | ||
16324 | /* Note that we rely on the fact that the corresponding GNU and | |
16325 | DWARF constants are the same. */ | |
16326 | switch (macinfo_type) | |
16327 | { | |
16328 | /* A zero macinfo type indicates the end of the macro | |
16329 | information. */ | |
16330 | case 0: | |
16331 | break; | |
16332 | ||
16333 | case DW_MACRO_GNU_define: | |
16334 | case DW_MACRO_GNU_undef: | |
16335 | /* Only skip the data by MAC_PTR. */ | |
16336 | { | |
16337 | unsigned int bytes_read; | |
16338 | ||
16339 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
16340 | mac_ptr += bytes_read; | |
16341 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
16342 | mac_ptr += bytes_read; | |
16343 | } | |
16344 | break; | |
16345 | ||
16346 | case DW_MACRO_GNU_start_file: | |
16347 | { | |
16348 | unsigned int bytes_read; | |
16349 | int line, file; | |
16350 | ||
16351 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
16352 | mac_ptr += bytes_read; | |
16353 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
16354 | mac_ptr += bytes_read; | |
16355 | ||
16356 | current_file = macro_start_file (file, line, current_file, | |
bb5ed363 | 16357 | comp_dir, lh, objfile); |
cf2c3c16 TT |
16358 | } |
16359 | break; | |
16360 | ||
16361 | case DW_MACRO_GNU_end_file: | |
16362 | /* No data to skip by MAC_PTR. */ | |
16363 | break; | |
16364 | ||
16365 | case DW_MACRO_GNU_define_indirect: | |
16366 | case DW_MACRO_GNU_undef_indirect: | |
16367 | { | |
16368 | unsigned int bytes_read; | |
16369 | ||
16370 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
16371 | mac_ptr += bytes_read; | |
16372 | mac_ptr += offset_size; | |
16373 | } | |
16374 | break; | |
16375 | ||
16376 | case DW_MACRO_GNU_transparent_include: | |
16377 | /* Note that, according to the spec, a transparent include | |
16378 | chain cannot call DW_MACRO_GNU_start_file. So, we can just | |
16379 | skip this opcode. */ | |
16380 | mac_ptr += offset_size; | |
16381 | break; | |
16382 | ||
16383 | case DW_MACINFO_vendor_ext: | |
16384 | /* Only skip the data by MAC_PTR. */ | |
16385 | if (!section_is_gnu) | |
16386 | { | |
16387 | unsigned int bytes_read; | |
16388 | ||
16389 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
16390 | mac_ptr += bytes_read; | |
16391 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
16392 | mac_ptr += bytes_read; | |
16393 | } | |
16394 | /* FALLTHROUGH */ | |
16395 | ||
16396 | default: | |
16397 | mac_ptr = skip_unknown_opcode (macinfo_type, opcode_definitions, | |
f664829e | 16398 | mac_ptr, mac_end, abfd, offset_size, |
cf2c3c16 TT |
16399 | section); |
16400 | if (mac_ptr == NULL) | |
16401 | return; | |
16402 | break; | |
16403 | } | |
16404 | } while (macinfo_type != 0 && current_file == NULL); | |
16405 | ||
16406 | /* Second pass: Process all entries. | |
16407 | ||
16408 | Use the AT_COMMAND_LINE flag to determine whether we are still processing | |
16409 | command-line macro definitions/undefinitions. This flag is unset when we | |
16410 | reach the first DW_MACINFO_start_file entry. */ | |
16411 | ||
8fc3fc34 TT |
16412 | include_hash = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, |
16413 | NULL, xcalloc, xfree); | |
16414 | cleanup = make_cleanup_htab_delete (include_hash); | |
16415 | mac_ptr = section->buffer + offset; | |
16416 | slot = htab_find_slot (include_hash, mac_ptr, INSERT); | |
16417 | *slot = mac_ptr; | |
16418 | dwarf_decode_macro_bytes (abfd, mac_ptr, mac_end, | |
cf2c3c16 | 16419 | current_file, lh, comp_dir, section, section_is_gnu, |
8fc3fc34 TT |
16420 | offset_size, objfile, include_hash); |
16421 | do_cleanups (cleanup); | |
cf2c3c16 TT |
16422 | } |
16423 | ||
8e19ed76 | 16424 | /* Check if the attribute's form is a DW_FORM_block* |
0963b4bd | 16425 | if so return true else false. */ |
380bca97 | 16426 | |
8e19ed76 PS |
16427 | static int |
16428 | attr_form_is_block (struct attribute *attr) | |
16429 | { | |
16430 | return (attr == NULL ? 0 : | |
16431 | attr->form == DW_FORM_block1 | |
16432 | || attr->form == DW_FORM_block2 | |
16433 | || attr->form == DW_FORM_block4 | |
2dc7f7b3 TT |
16434 | || attr->form == DW_FORM_block |
16435 | || attr->form == DW_FORM_exprloc); | |
8e19ed76 | 16436 | } |
4c2df51b | 16437 | |
c6a0999f JB |
16438 | /* Return non-zero if ATTR's value is a section offset --- classes |
16439 | lineptr, loclistptr, macptr or rangelistptr --- or zero, otherwise. | |
16440 | You may use DW_UNSND (attr) to retrieve such offsets. | |
16441 | ||
16442 | Section 7.5.4, "Attribute Encodings", explains that no attribute | |
16443 | may have a value that belongs to more than one of these classes; it | |
16444 | would be ambiguous if we did, because we use the same forms for all | |
16445 | of them. */ | |
380bca97 | 16446 | |
3690dd37 JB |
16447 | static int |
16448 | attr_form_is_section_offset (struct attribute *attr) | |
16449 | { | |
16450 | return (attr->form == DW_FORM_data4 | |
2dc7f7b3 TT |
16451 | || attr->form == DW_FORM_data8 |
16452 | || attr->form == DW_FORM_sec_offset); | |
3690dd37 JB |
16453 | } |
16454 | ||
3690dd37 JB |
16455 | /* Return non-zero if ATTR's value falls in the 'constant' class, or |
16456 | zero otherwise. When this function returns true, you can apply | |
16457 | dwarf2_get_attr_constant_value to it. | |
16458 | ||
16459 | However, note that for some attributes you must check | |
16460 | attr_form_is_section_offset before using this test. DW_FORM_data4 | |
16461 | and DW_FORM_data8 are members of both the constant class, and of | |
16462 | the classes that contain offsets into other debug sections | |
16463 | (lineptr, loclistptr, macptr or rangelistptr). The DWARF spec says | |
16464 | that, if an attribute's can be either a constant or one of the | |
16465 | section offset classes, DW_FORM_data4 and DW_FORM_data8 should be | |
16466 | taken as section offsets, not constants. */ | |
380bca97 | 16467 | |
3690dd37 JB |
16468 | static int |
16469 | attr_form_is_constant (struct attribute *attr) | |
16470 | { | |
16471 | switch (attr->form) | |
16472 | { | |
16473 | case DW_FORM_sdata: | |
16474 | case DW_FORM_udata: | |
16475 | case DW_FORM_data1: | |
16476 | case DW_FORM_data2: | |
16477 | case DW_FORM_data4: | |
16478 | case DW_FORM_data8: | |
16479 | return 1; | |
16480 | default: | |
16481 | return 0; | |
16482 | } | |
16483 | } | |
16484 | ||
3019eac3 DE |
16485 | /* Return the .debug_loc section to use for CU. |
16486 | For DWO files use .debug_loc.dwo. */ | |
16487 | ||
16488 | static struct dwarf2_section_info * | |
16489 | cu_debug_loc_section (struct dwarf2_cu *cu) | |
16490 | { | |
16491 | if (cu->dwo_unit) | |
16492 | return &cu->dwo_unit->dwo_file->sections.loc; | |
16493 | return &dwarf2_per_objfile->loc; | |
16494 | } | |
16495 | ||
8cf6f0b1 TT |
16496 | /* A helper function that fills in a dwarf2_loclist_baton. */ |
16497 | ||
16498 | static void | |
16499 | fill_in_loclist_baton (struct dwarf2_cu *cu, | |
16500 | struct dwarf2_loclist_baton *baton, | |
16501 | struct attribute *attr) | |
16502 | { | |
3019eac3 DE |
16503 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
16504 | ||
16505 | dwarf2_read_section (dwarf2_per_objfile->objfile, section); | |
8cf6f0b1 TT |
16506 | |
16507 | baton->per_cu = cu->per_cu; | |
16508 | gdb_assert (baton->per_cu); | |
16509 | /* We don't know how long the location list is, but make sure we | |
16510 | don't run off the edge of the section. */ | |
3019eac3 DE |
16511 | baton->size = section->size - DW_UNSND (attr); |
16512 | baton->data = section->buffer + DW_UNSND (attr); | |
8cf6f0b1 | 16513 | baton->base_address = cu->base_address; |
f664829e | 16514 | baton->from_dwo = cu->dwo_unit != NULL; |
8cf6f0b1 TT |
16515 | } |
16516 | ||
4c2df51b DJ |
16517 | static void |
16518 | dwarf2_symbol_mark_computed (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 16519 | struct dwarf2_cu *cu) |
4c2df51b | 16520 | { |
bb5ed363 | 16521 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3019eac3 | 16522 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
bb5ed363 | 16523 | |
3690dd37 | 16524 | if (attr_form_is_section_offset (attr) |
3019eac3 | 16525 | /* .debug_loc{,.dwo} may not exist at all, or the offset may be outside |
99bcc461 DJ |
16526 | the section. If so, fall through to the complaint in the |
16527 | other branch. */ | |
3019eac3 | 16528 | && DW_UNSND (attr) < dwarf2_section_size (objfile, section)) |
4c2df51b | 16529 | { |
0d53c4c4 | 16530 | struct dwarf2_loclist_baton *baton; |
4c2df51b | 16531 | |
bb5ed363 | 16532 | baton = obstack_alloc (&objfile->objfile_obstack, |
0d53c4c4 | 16533 | sizeof (struct dwarf2_loclist_baton)); |
4c2df51b | 16534 | |
8cf6f0b1 | 16535 | fill_in_loclist_baton (cu, baton, attr); |
be391dca | 16536 | |
d00adf39 | 16537 | if (cu->base_known == 0) |
0d53c4c4 | 16538 | complaint (&symfile_complaints, |
3e43a32a MS |
16539 | _("Location list used without " |
16540 | "specifying the CU base address.")); | |
4c2df51b | 16541 | |
768a979c | 16542 | SYMBOL_COMPUTED_OPS (sym) = &dwarf2_loclist_funcs; |
0d53c4c4 DJ |
16543 | SYMBOL_LOCATION_BATON (sym) = baton; |
16544 | } | |
16545 | else | |
16546 | { | |
16547 | struct dwarf2_locexpr_baton *baton; | |
16548 | ||
bb5ed363 | 16549 | baton = obstack_alloc (&objfile->objfile_obstack, |
0d53c4c4 | 16550 | sizeof (struct dwarf2_locexpr_baton)); |
ae0d2f24 UW |
16551 | baton->per_cu = cu->per_cu; |
16552 | gdb_assert (baton->per_cu); | |
0d53c4c4 DJ |
16553 | |
16554 | if (attr_form_is_block (attr)) | |
16555 | { | |
16556 | /* Note that we're just copying the block's data pointer | |
16557 | here, not the actual data. We're still pointing into the | |
6502dd73 DJ |
16558 | info_buffer for SYM's objfile; right now we never release |
16559 | that buffer, but when we do clean up properly this may | |
16560 | need to change. */ | |
0d53c4c4 DJ |
16561 | baton->size = DW_BLOCK (attr)->size; |
16562 | baton->data = DW_BLOCK (attr)->data; | |
16563 | } | |
16564 | else | |
16565 | { | |
16566 | dwarf2_invalid_attrib_class_complaint ("location description", | |
16567 | SYMBOL_NATURAL_NAME (sym)); | |
16568 | baton->size = 0; | |
0d53c4c4 | 16569 | } |
6e70227d | 16570 | |
768a979c | 16571 | SYMBOL_COMPUTED_OPS (sym) = &dwarf2_locexpr_funcs; |
0d53c4c4 DJ |
16572 | SYMBOL_LOCATION_BATON (sym) = baton; |
16573 | } | |
4c2df51b | 16574 | } |
6502dd73 | 16575 | |
9aa1f1e3 TT |
16576 | /* Return the OBJFILE associated with the compilation unit CU. If CU |
16577 | came from a separate debuginfo file, then the master objfile is | |
16578 | returned. */ | |
ae0d2f24 UW |
16579 | |
16580 | struct objfile * | |
16581 | dwarf2_per_cu_objfile (struct dwarf2_per_cu_data *per_cu) | |
16582 | { | |
9291a0cd | 16583 | struct objfile *objfile = per_cu->objfile; |
ae0d2f24 UW |
16584 | |
16585 | /* Return the master objfile, so that we can report and look up the | |
16586 | correct file containing this variable. */ | |
16587 | if (objfile->separate_debug_objfile_backlink) | |
16588 | objfile = objfile->separate_debug_objfile_backlink; | |
16589 | ||
16590 | return objfile; | |
16591 | } | |
16592 | ||
96408a79 SA |
16593 | /* Return comp_unit_head for PER_CU, either already available in PER_CU->CU |
16594 | (CU_HEADERP is unused in such case) or prepare a temporary copy at | |
16595 | CU_HEADERP first. */ | |
16596 | ||
16597 | static const struct comp_unit_head * | |
16598 | per_cu_header_read_in (struct comp_unit_head *cu_headerp, | |
16599 | struct dwarf2_per_cu_data *per_cu) | |
16600 | { | |
16601 | struct objfile *objfile; | |
16602 | struct dwarf2_per_objfile *per_objfile; | |
16603 | gdb_byte *info_ptr; | |
16604 | ||
16605 | if (per_cu->cu) | |
16606 | return &per_cu->cu->header; | |
16607 | ||
16608 | objfile = per_cu->objfile; | |
16609 | per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); | |
b64f50a1 | 16610 | info_ptr = per_objfile->info.buffer + per_cu->offset.sect_off; |
96408a79 SA |
16611 | |
16612 | memset (cu_headerp, 0, sizeof (*cu_headerp)); | |
16613 | read_comp_unit_head (cu_headerp, info_ptr, objfile->obfd); | |
16614 | ||
16615 | return cu_headerp; | |
16616 | } | |
16617 | ||
ae0d2f24 UW |
16618 | /* Return the address size given in the compilation unit header for CU. */ |
16619 | ||
98714339 | 16620 | int |
ae0d2f24 UW |
16621 | dwarf2_per_cu_addr_size (struct dwarf2_per_cu_data *per_cu) |
16622 | { | |
96408a79 SA |
16623 | struct comp_unit_head cu_header_local; |
16624 | const struct comp_unit_head *cu_headerp; | |
c471e790 | 16625 | |
96408a79 SA |
16626 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); |
16627 | ||
16628 | return cu_headerp->addr_size; | |
ae0d2f24 UW |
16629 | } |
16630 | ||
9eae7c52 TT |
16631 | /* Return the offset size given in the compilation unit header for CU. */ |
16632 | ||
16633 | int | |
16634 | dwarf2_per_cu_offset_size (struct dwarf2_per_cu_data *per_cu) | |
16635 | { | |
96408a79 SA |
16636 | struct comp_unit_head cu_header_local; |
16637 | const struct comp_unit_head *cu_headerp; | |
9c6c53f7 | 16638 | |
96408a79 SA |
16639 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); |
16640 | ||
16641 | return cu_headerp->offset_size; | |
16642 | } | |
16643 | ||
16644 | /* See its dwarf2loc.h declaration. */ | |
16645 | ||
16646 | int | |
16647 | dwarf2_per_cu_ref_addr_size (struct dwarf2_per_cu_data *per_cu) | |
16648 | { | |
16649 | struct comp_unit_head cu_header_local; | |
16650 | const struct comp_unit_head *cu_headerp; | |
16651 | ||
16652 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); | |
16653 | ||
16654 | if (cu_headerp->version == 2) | |
16655 | return cu_headerp->addr_size; | |
16656 | else | |
16657 | return cu_headerp->offset_size; | |
181cebd4 JK |
16658 | } |
16659 | ||
9aa1f1e3 TT |
16660 | /* Return the text offset of the CU. The returned offset comes from |
16661 | this CU's objfile. If this objfile came from a separate debuginfo | |
16662 | file, then the offset may be different from the corresponding | |
16663 | offset in the parent objfile. */ | |
16664 | ||
16665 | CORE_ADDR | |
16666 | dwarf2_per_cu_text_offset (struct dwarf2_per_cu_data *per_cu) | |
16667 | { | |
bb3fa9d0 | 16668 | struct objfile *objfile = per_cu->objfile; |
9aa1f1e3 TT |
16669 | |
16670 | return ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
16671 | } | |
16672 | ||
348e048f DE |
16673 | /* Locate the .debug_info compilation unit from CU's objfile which contains |
16674 | the DIE at OFFSET. Raises an error on failure. */ | |
ae038cb0 DJ |
16675 | |
16676 | static struct dwarf2_per_cu_data * | |
b64f50a1 | 16677 | dwarf2_find_containing_comp_unit (sect_offset offset, |
ae038cb0 DJ |
16678 | struct objfile *objfile) |
16679 | { | |
16680 | struct dwarf2_per_cu_data *this_cu; | |
16681 | int low, high; | |
16682 | ||
ae038cb0 DJ |
16683 | low = 0; |
16684 | high = dwarf2_per_objfile->n_comp_units - 1; | |
16685 | while (high > low) | |
16686 | { | |
16687 | int mid = low + (high - low) / 2; | |
9a619af0 | 16688 | |
b64f50a1 JK |
16689 | if (dwarf2_per_objfile->all_comp_units[mid]->offset.sect_off |
16690 | >= offset.sect_off) | |
ae038cb0 DJ |
16691 | high = mid; |
16692 | else | |
16693 | low = mid + 1; | |
16694 | } | |
16695 | gdb_assert (low == high); | |
b64f50a1 JK |
16696 | if (dwarf2_per_objfile->all_comp_units[low]->offset.sect_off |
16697 | > offset.sect_off) | |
ae038cb0 | 16698 | { |
10b3939b | 16699 | if (low == 0) |
8a3fe4f8 AC |
16700 | error (_("Dwarf Error: could not find partial DIE containing " |
16701 | "offset 0x%lx [in module %s]"), | |
b64f50a1 | 16702 | (long) offset.sect_off, bfd_get_filename (objfile->obfd)); |
10b3939b | 16703 | |
b64f50a1 JK |
16704 | gdb_assert (dwarf2_per_objfile->all_comp_units[low-1]->offset.sect_off |
16705 | <= offset.sect_off); | |
ae038cb0 DJ |
16706 | return dwarf2_per_objfile->all_comp_units[low-1]; |
16707 | } | |
16708 | else | |
16709 | { | |
16710 | this_cu = dwarf2_per_objfile->all_comp_units[low]; | |
16711 | if (low == dwarf2_per_objfile->n_comp_units - 1 | |
b64f50a1 JK |
16712 | && offset.sect_off >= this_cu->offset.sect_off + this_cu->length) |
16713 | error (_("invalid dwarf2 offset %u"), offset.sect_off); | |
16714 | gdb_assert (offset.sect_off < this_cu->offset.sect_off + this_cu->length); | |
ae038cb0 DJ |
16715 | return this_cu; |
16716 | } | |
16717 | } | |
16718 | ||
23745b47 | 16719 | /* Initialize dwarf2_cu CU, owned by PER_CU. */ |
93311388 | 16720 | |
9816fde3 | 16721 | static void |
23745b47 | 16722 | init_one_comp_unit (struct dwarf2_cu *cu, struct dwarf2_per_cu_data *per_cu) |
93311388 | 16723 | { |
9816fde3 | 16724 | memset (cu, 0, sizeof (*cu)); |
23745b47 DE |
16725 | per_cu->cu = cu; |
16726 | cu->per_cu = per_cu; | |
16727 | cu->objfile = per_cu->objfile; | |
93311388 | 16728 | obstack_init (&cu->comp_unit_obstack); |
9816fde3 JK |
16729 | } |
16730 | ||
16731 | /* Initialize basic fields of dwarf_cu CU according to DIE COMP_UNIT_DIE. */ | |
16732 | ||
16733 | static void | |
95554aad TT |
16734 | prepare_one_comp_unit (struct dwarf2_cu *cu, struct die_info *comp_unit_die, |
16735 | enum language pretend_language) | |
9816fde3 JK |
16736 | { |
16737 | struct attribute *attr; | |
16738 | ||
16739 | /* Set the language we're debugging. */ | |
16740 | attr = dwarf2_attr (comp_unit_die, DW_AT_language, cu); | |
16741 | if (attr) | |
16742 | set_cu_language (DW_UNSND (attr), cu); | |
16743 | else | |
9cded63f | 16744 | { |
95554aad | 16745 | cu->language = pretend_language; |
9cded63f TT |
16746 | cu->language_defn = language_def (cu->language); |
16747 | } | |
dee91e82 DE |
16748 | |
16749 | attr = dwarf2_attr (comp_unit_die, DW_AT_producer, cu); | |
16750 | if (attr) | |
16751 | cu->producer = DW_STRING (attr); | |
93311388 DE |
16752 | } |
16753 | ||
ae038cb0 DJ |
16754 | /* Release one cached compilation unit, CU. We unlink it from the tree |
16755 | of compilation units, but we don't remove it from the read_in_chain; | |
93311388 DE |
16756 | the caller is responsible for that. |
16757 | NOTE: DATA is a void * because this function is also used as a | |
16758 | cleanup routine. */ | |
ae038cb0 DJ |
16759 | |
16760 | static void | |
68dc6402 | 16761 | free_heap_comp_unit (void *data) |
ae038cb0 DJ |
16762 | { |
16763 | struct dwarf2_cu *cu = data; | |
16764 | ||
23745b47 DE |
16765 | gdb_assert (cu->per_cu != NULL); |
16766 | cu->per_cu->cu = NULL; | |
ae038cb0 DJ |
16767 | cu->per_cu = NULL; |
16768 | ||
16769 | obstack_free (&cu->comp_unit_obstack, NULL); | |
16770 | ||
16771 | xfree (cu); | |
16772 | } | |
16773 | ||
72bf9492 | 16774 | /* This cleanup function is passed the address of a dwarf2_cu on the stack |
ae038cb0 | 16775 | when we're finished with it. We can't free the pointer itself, but be |
dee91e82 | 16776 | sure to unlink it from the cache. Also release any associated storage. */ |
72bf9492 DJ |
16777 | |
16778 | static void | |
16779 | free_stack_comp_unit (void *data) | |
16780 | { | |
16781 | struct dwarf2_cu *cu = data; | |
16782 | ||
23745b47 DE |
16783 | gdb_assert (cu->per_cu != NULL); |
16784 | cu->per_cu->cu = NULL; | |
16785 | cu->per_cu = NULL; | |
16786 | ||
72bf9492 DJ |
16787 | obstack_free (&cu->comp_unit_obstack, NULL); |
16788 | cu->partial_dies = NULL; | |
ae038cb0 DJ |
16789 | } |
16790 | ||
16791 | /* Free all cached compilation units. */ | |
16792 | ||
16793 | static void | |
16794 | free_cached_comp_units (void *data) | |
16795 | { | |
16796 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
16797 | ||
16798 | per_cu = dwarf2_per_objfile->read_in_chain; | |
16799 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
16800 | while (per_cu != NULL) | |
16801 | { | |
16802 | struct dwarf2_per_cu_data *next_cu; | |
16803 | ||
16804 | next_cu = per_cu->cu->read_in_chain; | |
16805 | ||
68dc6402 | 16806 | free_heap_comp_unit (per_cu->cu); |
ae038cb0 DJ |
16807 | *last_chain = next_cu; |
16808 | ||
16809 | per_cu = next_cu; | |
16810 | } | |
16811 | } | |
16812 | ||
16813 | /* Increase the age counter on each cached compilation unit, and free | |
16814 | any that are too old. */ | |
16815 | ||
16816 | static void | |
16817 | age_cached_comp_units (void) | |
16818 | { | |
16819 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
16820 | ||
16821 | dwarf2_clear_marks (dwarf2_per_objfile->read_in_chain); | |
16822 | per_cu = dwarf2_per_objfile->read_in_chain; | |
16823 | while (per_cu != NULL) | |
16824 | { | |
16825 | per_cu->cu->last_used ++; | |
16826 | if (per_cu->cu->last_used <= dwarf2_max_cache_age) | |
16827 | dwarf2_mark (per_cu->cu); | |
16828 | per_cu = per_cu->cu->read_in_chain; | |
16829 | } | |
16830 | ||
16831 | per_cu = dwarf2_per_objfile->read_in_chain; | |
16832 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
16833 | while (per_cu != NULL) | |
16834 | { | |
16835 | struct dwarf2_per_cu_data *next_cu; | |
16836 | ||
16837 | next_cu = per_cu->cu->read_in_chain; | |
16838 | ||
16839 | if (!per_cu->cu->mark) | |
16840 | { | |
68dc6402 | 16841 | free_heap_comp_unit (per_cu->cu); |
ae038cb0 DJ |
16842 | *last_chain = next_cu; |
16843 | } | |
16844 | else | |
16845 | last_chain = &per_cu->cu->read_in_chain; | |
16846 | ||
16847 | per_cu = next_cu; | |
16848 | } | |
16849 | } | |
16850 | ||
16851 | /* Remove a single compilation unit from the cache. */ | |
16852 | ||
16853 | static void | |
dee91e82 | 16854 | free_one_cached_comp_unit (struct dwarf2_per_cu_data *target_per_cu) |
ae038cb0 DJ |
16855 | { |
16856 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
16857 | ||
16858 | per_cu = dwarf2_per_objfile->read_in_chain; | |
16859 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
16860 | while (per_cu != NULL) | |
16861 | { | |
16862 | struct dwarf2_per_cu_data *next_cu; | |
16863 | ||
16864 | next_cu = per_cu->cu->read_in_chain; | |
16865 | ||
dee91e82 | 16866 | if (per_cu == target_per_cu) |
ae038cb0 | 16867 | { |
68dc6402 | 16868 | free_heap_comp_unit (per_cu->cu); |
dee91e82 | 16869 | per_cu->cu = NULL; |
ae038cb0 DJ |
16870 | *last_chain = next_cu; |
16871 | break; | |
16872 | } | |
16873 | else | |
16874 | last_chain = &per_cu->cu->read_in_chain; | |
16875 | ||
16876 | per_cu = next_cu; | |
16877 | } | |
16878 | } | |
16879 | ||
fe3e1990 DJ |
16880 | /* Release all extra memory associated with OBJFILE. */ |
16881 | ||
16882 | void | |
16883 | dwarf2_free_objfile (struct objfile *objfile) | |
16884 | { | |
16885 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); | |
16886 | ||
16887 | if (dwarf2_per_objfile == NULL) | |
16888 | return; | |
16889 | ||
16890 | /* Cached DIE trees use xmalloc and the comp_unit_obstack. */ | |
16891 | free_cached_comp_units (NULL); | |
16892 | ||
7b9f3c50 DE |
16893 | if (dwarf2_per_objfile->quick_file_names_table) |
16894 | htab_delete (dwarf2_per_objfile->quick_file_names_table); | |
9291a0cd | 16895 | |
fe3e1990 DJ |
16896 | /* Everything else should be on the objfile obstack. */ |
16897 | } | |
16898 | ||
dee91e82 DE |
16899 | /* A set of CU "per_cu" pointer, DIE offset, and GDB type pointer. |
16900 | We store these in a hash table separate from the DIEs, and preserve them | |
16901 | when the DIEs are flushed out of cache. | |
16902 | ||
16903 | The CU "per_cu" pointer is needed because offset alone is not enough to | |
3019eac3 DE |
16904 | uniquely identify the type. A file may have multiple .debug_types sections, |
16905 | or the type may come from a DWO file. We have to use something in | |
16906 | dwarf2_per_cu_data (or the pointer to it) because we can enter the lookup | |
16907 | routine, get_die_type_at_offset, from outside this file, and thus won't | |
16908 | necessarily have PER_CU->cu. Fortunately, PER_CU is stable for the life | |
16909 | of the objfile. */ | |
1c379e20 | 16910 | |
dee91e82 | 16911 | struct dwarf2_per_cu_offset_and_type |
1c379e20 | 16912 | { |
dee91e82 | 16913 | const struct dwarf2_per_cu_data *per_cu; |
b64f50a1 | 16914 | sect_offset offset; |
1c379e20 DJ |
16915 | struct type *type; |
16916 | }; | |
16917 | ||
dee91e82 | 16918 | /* Hash function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
16919 | |
16920 | static hashval_t | |
dee91e82 | 16921 | per_cu_offset_and_type_hash (const void *item) |
1c379e20 | 16922 | { |
dee91e82 | 16923 | const struct dwarf2_per_cu_offset_and_type *ofs = item; |
9a619af0 | 16924 | |
dee91e82 | 16925 | return (uintptr_t) ofs->per_cu + ofs->offset.sect_off; |
1c379e20 DJ |
16926 | } |
16927 | ||
dee91e82 | 16928 | /* Equality function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
16929 | |
16930 | static int | |
dee91e82 | 16931 | per_cu_offset_and_type_eq (const void *item_lhs, const void *item_rhs) |
1c379e20 | 16932 | { |
dee91e82 DE |
16933 | const struct dwarf2_per_cu_offset_and_type *ofs_lhs = item_lhs; |
16934 | const struct dwarf2_per_cu_offset_and_type *ofs_rhs = item_rhs; | |
9a619af0 | 16935 | |
dee91e82 DE |
16936 | return (ofs_lhs->per_cu == ofs_rhs->per_cu |
16937 | && ofs_lhs->offset.sect_off == ofs_rhs->offset.sect_off); | |
1c379e20 DJ |
16938 | } |
16939 | ||
16940 | /* Set the type associated with DIE to TYPE. Save it in CU's hash | |
7e314c57 JK |
16941 | table if necessary. For convenience, return TYPE. |
16942 | ||
16943 | The DIEs reading must have careful ordering to: | |
16944 | * Not cause infite loops trying to read in DIEs as a prerequisite for | |
16945 | reading current DIE. | |
16946 | * Not trying to dereference contents of still incompletely read in types | |
16947 | while reading in other DIEs. | |
16948 | * Enable referencing still incompletely read in types just by a pointer to | |
16949 | the type without accessing its fields. | |
16950 | ||
16951 | Therefore caller should follow these rules: | |
16952 | * Try to fetch any prerequisite types we may need to build this DIE type | |
16953 | before building the type and calling set_die_type. | |
e71ec853 | 16954 | * After building type call set_die_type for current DIE as soon as |
7e314c57 JK |
16955 | possible before fetching more types to complete the current type. |
16956 | * Make the type as complete as possible before fetching more types. */ | |
1c379e20 | 16957 | |
f792889a | 16958 | static struct type * |
1c379e20 DJ |
16959 | set_die_type (struct die_info *die, struct type *type, struct dwarf2_cu *cu) |
16960 | { | |
dee91e82 | 16961 | struct dwarf2_per_cu_offset_and_type **slot, ofs; |
673bfd45 | 16962 | struct objfile *objfile = cu->objfile; |
1c379e20 | 16963 | |
b4ba55a1 JB |
16964 | /* For Ada types, make sure that the gnat-specific data is always |
16965 | initialized (if not already set). There are a few types where | |
16966 | we should not be doing so, because the type-specific area is | |
16967 | already used to hold some other piece of info (eg: TYPE_CODE_FLT | |
16968 | where the type-specific area is used to store the floatformat). | |
16969 | But this is not a problem, because the gnat-specific information | |
16970 | is actually not needed for these types. */ | |
16971 | if (need_gnat_info (cu) | |
16972 | && TYPE_CODE (type) != TYPE_CODE_FUNC | |
16973 | && TYPE_CODE (type) != TYPE_CODE_FLT | |
16974 | && !HAVE_GNAT_AUX_INFO (type)) | |
16975 | INIT_GNAT_SPECIFIC (type); | |
16976 | ||
dee91e82 | 16977 | if (dwarf2_per_objfile->die_type_hash == NULL) |
f792889a | 16978 | { |
dee91e82 DE |
16979 | dwarf2_per_objfile->die_type_hash = |
16980 | htab_create_alloc_ex (127, | |
16981 | per_cu_offset_and_type_hash, | |
16982 | per_cu_offset_and_type_eq, | |
16983 | NULL, | |
16984 | &objfile->objfile_obstack, | |
16985 | hashtab_obstack_allocate, | |
16986 | dummy_obstack_deallocate); | |
f792889a | 16987 | } |
1c379e20 | 16988 | |
dee91e82 | 16989 | ofs.per_cu = cu->per_cu; |
1c379e20 DJ |
16990 | ofs.offset = die->offset; |
16991 | ofs.type = type; | |
dee91e82 DE |
16992 | slot = (struct dwarf2_per_cu_offset_and_type **) |
16993 | htab_find_slot (dwarf2_per_objfile->die_type_hash, &ofs, INSERT); | |
7e314c57 JK |
16994 | if (*slot) |
16995 | complaint (&symfile_complaints, | |
16996 | _("A problem internal to GDB: DIE 0x%x has type already set"), | |
b64f50a1 | 16997 | die->offset.sect_off); |
673bfd45 | 16998 | *slot = obstack_alloc (&objfile->objfile_obstack, sizeof (**slot)); |
1c379e20 | 16999 | **slot = ofs; |
f792889a | 17000 | return type; |
1c379e20 DJ |
17001 | } |
17002 | ||
380bca97 | 17003 | /* Look up the type for the die at OFFSET in the appropriate type_hash |
673bfd45 | 17004 | table, or return NULL if the die does not have a saved type. */ |
1c379e20 DJ |
17005 | |
17006 | static struct type * | |
b64f50a1 | 17007 | get_die_type_at_offset (sect_offset offset, |
673bfd45 | 17008 | struct dwarf2_per_cu_data *per_cu) |
1c379e20 | 17009 | { |
dee91e82 | 17010 | struct dwarf2_per_cu_offset_and_type *slot, ofs; |
f792889a | 17011 | |
dee91e82 | 17012 | if (dwarf2_per_objfile->die_type_hash == NULL) |
f792889a | 17013 | return NULL; |
1c379e20 | 17014 | |
dee91e82 | 17015 | ofs.per_cu = per_cu; |
673bfd45 | 17016 | ofs.offset = offset; |
dee91e82 | 17017 | slot = htab_find (dwarf2_per_objfile->die_type_hash, &ofs); |
1c379e20 DJ |
17018 | if (slot) |
17019 | return slot->type; | |
17020 | else | |
17021 | return NULL; | |
17022 | } | |
17023 | ||
673bfd45 DE |
17024 | /* Look up the type for DIE in the appropriate type_hash table, |
17025 | or return NULL if DIE does not have a saved type. */ | |
17026 | ||
17027 | static struct type * | |
17028 | get_die_type (struct die_info *die, struct dwarf2_cu *cu) | |
17029 | { | |
17030 | return get_die_type_at_offset (die->offset, cu->per_cu); | |
17031 | } | |
17032 | ||
10b3939b DJ |
17033 | /* Add a dependence relationship from CU to REF_PER_CU. */ |
17034 | ||
17035 | static void | |
17036 | dwarf2_add_dependence (struct dwarf2_cu *cu, | |
17037 | struct dwarf2_per_cu_data *ref_per_cu) | |
17038 | { | |
17039 | void **slot; | |
17040 | ||
17041 | if (cu->dependencies == NULL) | |
17042 | cu->dependencies | |
17043 | = htab_create_alloc_ex (5, htab_hash_pointer, htab_eq_pointer, | |
17044 | NULL, &cu->comp_unit_obstack, | |
17045 | hashtab_obstack_allocate, | |
17046 | dummy_obstack_deallocate); | |
17047 | ||
17048 | slot = htab_find_slot (cu->dependencies, ref_per_cu, INSERT); | |
17049 | if (*slot == NULL) | |
17050 | *slot = ref_per_cu; | |
17051 | } | |
1c379e20 | 17052 | |
f504f079 DE |
17053 | /* Subroutine of dwarf2_mark to pass to htab_traverse. |
17054 | Set the mark field in every compilation unit in the | |
ae038cb0 DJ |
17055 | cache that we must keep because we are keeping CU. */ |
17056 | ||
10b3939b DJ |
17057 | static int |
17058 | dwarf2_mark_helper (void **slot, void *data) | |
17059 | { | |
17060 | struct dwarf2_per_cu_data *per_cu; | |
17061 | ||
17062 | per_cu = (struct dwarf2_per_cu_data *) *slot; | |
d07ed419 JK |
17063 | |
17064 | /* cu->dependencies references may not yet have been ever read if QUIT aborts | |
17065 | reading of the chain. As such dependencies remain valid it is not much | |
17066 | useful to track and undo them during QUIT cleanups. */ | |
17067 | if (per_cu->cu == NULL) | |
17068 | return 1; | |
17069 | ||
10b3939b DJ |
17070 | if (per_cu->cu->mark) |
17071 | return 1; | |
17072 | per_cu->cu->mark = 1; | |
17073 | ||
17074 | if (per_cu->cu->dependencies != NULL) | |
17075 | htab_traverse (per_cu->cu->dependencies, dwarf2_mark_helper, NULL); | |
17076 | ||
17077 | return 1; | |
17078 | } | |
17079 | ||
f504f079 DE |
17080 | /* Set the mark field in CU and in every other compilation unit in the |
17081 | cache that we must keep because we are keeping CU. */ | |
17082 | ||
ae038cb0 DJ |
17083 | static void |
17084 | dwarf2_mark (struct dwarf2_cu *cu) | |
17085 | { | |
17086 | if (cu->mark) | |
17087 | return; | |
17088 | cu->mark = 1; | |
10b3939b DJ |
17089 | if (cu->dependencies != NULL) |
17090 | htab_traverse (cu->dependencies, dwarf2_mark_helper, NULL); | |
ae038cb0 DJ |
17091 | } |
17092 | ||
17093 | static void | |
17094 | dwarf2_clear_marks (struct dwarf2_per_cu_data *per_cu) | |
17095 | { | |
17096 | while (per_cu) | |
17097 | { | |
17098 | per_cu->cu->mark = 0; | |
17099 | per_cu = per_cu->cu->read_in_chain; | |
17100 | } | |
72bf9492 DJ |
17101 | } |
17102 | ||
72bf9492 DJ |
17103 | /* Trivial hash function for partial_die_info: the hash value of a DIE |
17104 | is its offset in .debug_info for this objfile. */ | |
17105 | ||
17106 | static hashval_t | |
17107 | partial_die_hash (const void *item) | |
17108 | { | |
17109 | const struct partial_die_info *part_die = item; | |
9a619af0 | 17110 | |
b64f50a1 | 17111 | return part_die->offset.sect_off; |
72bf9492 DJ |
17112 | } |
17113 | ||
17114 | /* Trivial comparison function for partial_die_info structures: two DIEs | |
17115 | are equal if they have the same offset. */ | |
17116 | ||
17117 | static int | |
17118 | partial_die_eq (const void *item_lhs, const void *item_rhs) | |
17119 | { | |
17120 | const struct partial_die_info *part_die_lhs = item_lhs; | |
17121 | const struct partial_die_info *part_die_rhs = item_rhs; | |
9a619af0 | 17122 | |
b64f50a1 | 17123 | return part_die_lhs->offset.sect_off == part_die_rhs->offset.sect_off; |
72bf9492 DJ |
17124 | } |
17125 | ||
ae038cb0 DJ |
17126 | static struct cmd_list_element *set_dwarf2_cmdlist; |
17127 | static struct cmd_list_element *show_dwarf2_cmdlist; | |
17128 | ||
17129 | static void | |
17130 | set_dwarf2_cmd (char *args, int from_tty) | |
17131 | { | |
17132 | help_list (set_dwarf2_cmdlist, "maintenance set dwarf2 ", -1, gdb_stdout); | |
17133 | } | |
17134 | ||
17135 | static void | |
17136 | show_dwarf2_cmd (char *args, int from_tty) | |
6e70227d | 17137 | { |
ae038cb0 DJ |
17138 | cmd_show_list (show_dwarf2_cmdlist, from_tty, ""); |
17139 | } | |
17140 | ||
dce234bc PP |
17141 | /* If section described by INFO was mmapped, munmap it now. */ |
17142 | ||
17143 | static void | |
17144 | munmap_section_buffer (struct dwarf2_section_info *info) | |
17145 | { | |
b315ab21 | 17146 | if (info->map_addr != NULL) |
dce234bc PP |
17147 | { |
17148 | #ifdef HAVE_MMAP | |
b315ab21 | 17149 | int res; |
9a619af0 | 17150 | |
b315ab21 TG |
17151 | res = munmap (info->map_addr, info->map_len); |
17152 | gdb_assert (res == 0); | |
dce234bc PP |
17153 | #else |
17154 | /* Without HAVE_MMAP, we should never be here to begin with. */ | |
f3574227 | 17155 | gdb_assert_not_reached ("no mmap support"); |
dce234bc PP |
17156 | #endif |
17157 | } | |
17158 | } | |
17159 | ||
17160 | /* munmap debug sections for OBJFILE, if necessary. */ | |
17161 | ||
17162 | static void | |
c1bd65d0 | 17163 | dwarf2_per_objfile_free (struct objfile *objfile, void *d) |
dce234bc PP |
17164 | { |
17165 | struct dwarf2_per_objfile *data = d; | |
8b70b953 TT |
17166 | int ix; |
17167 | struct dwarf2_section_info *section; | |
9a619af0 | 17168 | |
16be1145 DE |
17169 | /* This is sorted according to the order they're defined in to make it easier |
17170 | to keep in sync. */ | |
dce234bc PP |
17171 | munmap_section_buffer (&data->info); |
17172 | munmap_section_buffer (&data->abbrev); | |
17173 | munmap_section_buffer (&data->line); | |
16be1145 | 17174 | munmap_section_buffer (&data->loc); |
dce234bc | 17175 | munmap_section_buffer (&data->macinfo); |
cf2c3c16 | 17176 | munmap_section_buffer (&data->macro); |
16be1145 | 17177 | munmap_section_buffer (&data->str); |
dce234bc | 17178 | munmap_section_buffer (&data->ranges); |
3019eac3 | 17179 | munmap_section_buffer (&data->addr); |
dce234bc PP |
17180 | munmap_section_buffer (&data->frame); |
17181 | munmap_section_buffer (&data->eh_frame); | |
9291a0cd | 17182 | munmap_section_buffer (&data->gdb_index); |
8b70b953 TT |
17183 | |
17184 | for (ix = 0; | |
17185 | VEC_iterate (dwarf2_section_info_def, data->types, ix, section); | |
17186 | ++ix) | |
17187 | munmap_section_buffer (section); | |
17188 | ||
95554aad TT |
17189 | for (ix = 0; ix < dwarf2_per_objfile->n_comp_units; ++ix) |
17190 | VEC_free (dwarf2_per_cu_ptr, | |
17191 | dwarf2_per_objfile->all_comp_units[ix]->imported_symtabs); | |
17192 | ||
8b70b953 | 17193 | VEC_free (dwarf2_section_info_def, data->types); |
3019eac3 DE |
17194 | |
17195 | if (data->dwo_files) | |
17196 | free_dwo_files (data->dwo_files, objfile); | |
9291a0cd TT |
17197 | } |
17198 | ||
17199 | \f | |
ae2de4f8 | 17200 | /* The "save gdb-index" command. */ |
9291a0cd TT |
17201 | |
17202 | /* The contents of the hash table we create when building the string | |
17203 | table. */ | |
17204 | struct strtab_entry | |
17205 | { | |
17206 | offset_type offset; | |
17207 | const char *str; | |
17208 | }; | |
17209 | ||
559a7a62 JK |
17210 | /* Hash function for a strtab_entry. |
17211 | ||
17212 | Function is used only during write_hash_table so no index format backward | |
17213 | compatibility is needed. */ | |
b89be57b | 17214 | |
9291a0cd TT |
17215 | static hashval_t |
17216 | hash_strtab_entry (const void *e) | |
17217 | { | |
17218 | const struct strtab_entry *entry = e; | |
559a7a62 | 17219 | return mapped_index_string_hash (INT_MAX, entry->str); |
9291a0cd TT |
17220 | } |
17221 | ||
17222 | /* Equality function for a strtab_entry. */ | |
b89be57b | 17223 | |
9291a0cd TT |
17224 | static int |
17225 | eq_strtab_entry (const void *a, const void *b) | |
17226 | { | |
17227 | const struct strtab_entry *ea = a; | |
17228 | const struct strtab_entry *eb = b; | |
17229 | return !strcmp (ea->str, eb->str); | |
17230 | } | |
17231 | ||
17232 | /* Create a strtab_entry hash table. */ | |
b89be57b | 17233 | |
9291a0cd TT |
17234 | static htab_t |
17235 | create_strtab (void) | |
17236 | { | |
17237 | return htab_create_alloc (100, hash_strtab_entry, eq_strtab_entry, | |
17238 | xfree, xcalloc, xfree); | |
17239 | } | |
17240 | ||
17241 | /* Add a string to the constant pool. Return the string's offset in | |
17242 | host order. */ | |
b89be57b | 17243 | |
9291a0cd TT |
17244 | static offset_type |
17245 | add_string (htab_t table, struct obstack *cpool, const char *str) | |
17246 | { | |
17247 | void **slot; | |
17248 | struct strtab_entry entry; | |
17249 | struct strtab_entry *result; | |
17250 | ||
17251 | entry.str = str; | |
17252 | slot = htab_find_slot (table, &entry, INSERT); | |
17253 | if (*slot) | |
17254 | result = *slot; | |
17255 | else | |
17256 | { | |
17257 | result = XNEW (struct strtab_entry); | |
17258 | result->offset = obstack_object_size (cpool); | |
17259 | result->str = str; | |
17260 | obstack_grow_str0 (cpool, str); | |
17261 | *slot = result; | |
17262 | } | |
17263 | return result->offset; | |
17264 | } | |
17265 | ||
17266 | /* An entry in the symbol table. */ | |
17267 | struct symtab_index_entry | |
17268 | { | |
17269 | /* The name of the symbol. */ | |
17270 | const char *name; | |
17271 | /* The offset of the name in the constant pool. */ | |
17272 | offset_type index_offset; | |
17273 | /* A sorted vector of the indices of all the CUs that hold an object | |
17274 | of this name. */ | |
17275 | VEC (offset_type) *cu_indices; | |
17276 | }; | |
17277 | ||
17278 | /* The symbol table. This is a power-of-2-sized hash table. */ | |
17279 | struct mapped_symtab | |
17280 | { | |
17281 | offset_type n_elements; | |
17282 | offset_type size; | |
17283 | struct symtab_index_entry **data; | |
17284 | }; | |
17285 | ||
17286 | /* Hash function for a symtab_index_entry. */ | |
b89be57b | 17287 | |
9291a0cd TT |
17288 | static hashval_t |
17289 | hash_symtab_entry (const void *e) | |
17290 | { | |
17291 | const struct symtab_index_entry *entry = e; | |
17292 | return iterative_hash (VEC_address (offset_type, entry->cu_indices), | |
17293 | sizeof (offset_type) * VEC_length (offset_type, | |
17294 | entry->cu_indices), | |
17295 | 0); | |
17296 | } | |
17297 | ||
17298 | /* Equality function for a symtab_index_entry. */ | |
b89be57b | 17299 | |
9291a0cd TT |
17300 | static int |
17301 | eq_symtab_entry (const void *a, const void *b) | |
17302 | { | |
17303 | const struct symtab_index_entry *ea = a; | |
17304 | const struct symtab_index_entry *eb = b; | |
17305 | int len = VEC_length (offset_type, ea->cu_indices); | |
17306 | if (len != VEC_length (offset_type, eb->cu_indices)) | |
17307 | return 0; | |
17308 | return !memcmp (VEC_address (offset_type, ea->cu_indices), | |
17309 | VEC_address (offset_type, eb->cu_indices), | |
17310 | sizeof (offset_type) * len); | |
17311 | } | |
17312 | ||
17313 | /* Destroy a symtab_index_entry. */ | |
b89be57b | 17314 | |
9291a0cd TT |
17315 | static void |
17316 | delete_symtab_entry (void *p) | |
17317 | { | |
17318 | struct symtab_index_entry *entry = p; | |
17319 | VEC_free (offset_type, entry->cu_indices); | |
17320 | xfree (entry); | |
17321 | } | |
17322 | ||
17323 | /* Create a hash table holding symtab_index_entry objects. */ | |
b89be57b | 17324 | |
9291a0cd | 17325 | static htab_t |
3876f04e | 17326 | create_symbol_hash_table (void) |
9291a0cd TT |
17327 | { |
17328 | return htab_create_alloc (100, hash_symtab_entry, eq_symtab_entry, | |
17329 | delete_symtab_entry, xcalloc, xfree); | |
17330 | } | |
17331 | ||
17332 | /* Create a new mapped symtab object. */ | |
b89be57b | 17333 | |
9291a0cd TT |
17334 | static struct mapped_symtab * |
17335 | create_mapped_symtab (void) | |
17336 | { | |
17337 | struct mapped_symtab *symtab = XNEW (struct mapped_symtab); | |
17338 | symtab->n_elements = 0; | |
17339 | symtab->size = 1024; | |
17340 | symtab->data = XCNEWVEC (struct symtab_index_entry *, symtab->size); | |
17341 | return symtab; | |
17342 | } | |
17343 | ||
17344 | /* Destroy a mapped_symtab. */ | |
b89be57b | 17345 | |
9291a0cd TT |
17346 | static void |
17347 | cleanup_mapped_symtab (void *p) | |
17348 | { | |
17349 | struct mapped_symtab *symtab = p; | |
17350 | /* The contents of the array are freed when the other hash table is | |
17351 | destroyed. */ | |
17352 | xfree (symtab->data); | |
17353 | xfree (symtab); | |
17354 | } | |
17355 | ||
17356 | /* Find a slot in SYMTAB for the symbol NAME. Returns a pointer to | |
559a7a62 JK |
17357 | the slot. |
17358 | ||
17359 | Function is used only during write_hash_table so no index format backward | |
17360 | compatibility is needed. */ | |
b89be57b | 17361 | |
9291a0cd TT |
17362 | static struct symtab_index_entry ** |
17363 | find_slot (struct mapped_symtab *symtab, const char *name) | |
17364 | { | |
559a7a62 | 17365 | offset_type index, step, hash = mapped_index_string_hash (INT_MAX, name); |
9291a0cd TT |
17366 | |
17367 | index = hash & (symtab->size - 1); | |
17368 | step = ((hash * 17) & (symtab->size - 1)) | 1; | |
17369 | ||
17370 | for (;;) | |
17371 | { | |
17372 | if (!symtab->data[index] || !strcmp (name, symtab->data[index]->name)) | |
17373 | return &symtab->data[index]; | |
17374 | index = (index + step) & (symtab->size - 1); | |
17375 | } | |
17376 | } | |
17377 | ||
17378 | /* Expand SYMTAB's hash table. */ | |
b89be57b | 17379 | |
9291a0cd TT |
17380 | static void |
17381 | hash_expand (struct mapped_symtab *symtab) | |
17382 | { | |
17383 | offset_type old_size = symtab->size; | |
17384 | offset_type i; | |
17385 | struct symtab_index_entry **old_entries = symtab->data; | |
17386 | ||
17387 | symtab->size *= 2; | |
17388 | symtab->data = XCNEWVEC (struct symtab_index_entry *, symtab->size); | |
17389 | ||
17390 | for (i = 0; i < old_size; ++i) | |
17391 | { | |
17392 | if (old_entries[i]) | |
17393 | { | |
17394 | struct symtab_index_entry **slot = find_slot (symtab, | |
17395 | old_entries[i]->name); | |
17396 | *slot = old_entries[i]; | |
17397 | } | |
17398 | } | |
17399 | ||
17400 | xfree (old_entries); | |
17401 | } | |
17402 | ||
17403 | /* Add an entry to SYMTAB. NAME is the name of the symbol. CU_INDEX | |
17404 | is the index of the CU in which the symbol appears. */ | |
b89be57b | 17405 | |
9291a0cd TT |
17406 | static void |
17407 | add_index_entry (struct mapped_symtab *symtab, const char *name, | |
17408 | offset_type cu_index) | |
17409 | { | |
17410 | struct symtab_index_entry **slot; | |
17411 | ||
17412 | ++symtab->n_elements; | |
17413 | if (4 * symtab->n_elements / 3 >= symtab->size) | |
17414 | hash_expand (symtab); | |
17415 | ||
17416 | slot = find_slot (symtab, name); | |
17417 | if (!*slot) | |
17418 | { | |
17419 | *slot = XNEW (struct symtab_index_entry); | |
17420 | (*slot)->name = name; | |
17421 | (*slot)->cu_indices = NULL; | |
17422 | } | |
17423 | /* Don't push an index twice. Due to how we add entries we only | |
17424 | have to check the last one. */ | |
17425 | if (VEC_empty (offset_type, (*slot)->cu_indices) | |
cf31e6f9 | 17426 | || VEC_last (offset_type, (*slot)->cu_indices) != cu_index) |
9291a0cd TT |
17427 | VEC_safe_push (offset_type, (*slot)->cu_indices, cu_index); |
17428 | } | |
17429 | ||
17430 | /* Add a vector of indices to the constant pool. */ | |
b89be57b | 17431 | |
9291a0cd | 17432 | static offset_type |
3876f04e | 17433 | add_indices_to_cpool (htab_t symbol_hash_table, struct obstack *cpool, |
9291a0cd TT |
17434 | struct symtab_index_entry *entry) |
17435 | { | |
17436 | void **slot; | |
17437 | ||
3876f04e | 17438 | slot = htab_find_slot (symbol_hash_table, entry, INSERT); |
9291a0cd TT |
17439 | if (!*slot) |
17440 | { | |
17441 | offset_type len = VEC_length (offset_type, entry->cu_indices); | |
17442 | offset_type val = MAYBE_SWAP (len); | |
17443 | offset_type iter; | |
17444 | int i; | |
17445 | ||
17446 | *slot = entry; | |
17447 | entry->index_offset = obstack_object_size (cpool); | |
17448 | ||
17449 | obstack_grow (cpool, &val, sizeof (val)); | |
17450 | for (i = 0; | |
17451 | VEC_iterate (offset_type, entry->cu_indices, i, iter); | |
17452 | ++i) | |
17453 | { | |
17454 | val = MAYBE_SWAP (iter); | |
17455 | obstack_grow (cpool, &val, sizeof (val)); | |
17456 | } | |
17457 | } | |
17458 | else | |
17459 | { | |
17460 | struct symtab_index_entry *old_entry = *slot; | |
17461 | entry->index_offset = old_entry->index_offset; | |
17462 | entry = old_entry; | |
17463 | } | |
17464 | return entry->index_offset; | |
17465 | } | |
17466 | ||
17467 | /* Write the mapped hash table SYMTAB to the obstack OUTPUT, with | |
17468 | constant pool entries going into the obstack CPOOL. */ | |
b89be57b | 17469 | |
9291a0cd TT |
17470 | static void |
17471 | write_hash_table (struct mapped_symtab *symtab, | |
17472 | struct obstack *output, struct obstack *cpool) | |
17473 | { | |
17474 | offset_type i; | |
3876f04e | 17475 | htab_t symbol_hash_table; |
9291a0cd TT |
17476 | htab_t str_table; |
17477 | ||
3876f04e | 17478 | symbol_hash_table = create_symbol_hash_table (); |
9291a0cd | 17479 | str_table = create_strtab (); |
3876f04e | 17480 | |
9291a0cd TT |
17481 | /* We add all the index vectors to the constant pool first, to |
17482 | ensure alignment is ok. */ | |
17483 | for (i = 0; i < symtab->size; ++i) | |
17484 | { | |
17485 | if (symtab->data[i]) | |
3876f04e | 17486 | add_indices_to_cpool (symbol_hash_table, cpool, symtab->data[i]); |
9291a0cd TT |
17487 | } |
17488 | ||
17489 | /* Now write out the hash table. */ | |
17490 | for (i = 0; i < symtab->size; ++i) | |
17491 | { | |
17492 | offset_type str_off, vec_off; | |
17493 | ||
17494 | if (symtab->data[i]) | |
17495 | { | |
17496 | str_off = add_string (str_table, cpool, symtab->data[i]->name); | |
17497 | vec_off = symtab->data[i]->index_offset; | |
17498 | } | |
17499 | else | |
17500 | { | |
17501 | /* While 0 is a valid constant pool index, it is not valid | |
17502 | to have 0 for both offsets. */ | |
17503 | str_off = 0; | |
17504 | vec_off = 0; | |
17505 | } | |
17506 | ||
17507 | str_off = MAYBE_SWAP (str_off); | |
17508 | vec_off = MAYBE_SWAP (vec_off); | |
17509 | ||
17510 | obstack_grow (output, &str_off, sizeof (str_off)); | |
17511 | obstack_grow (output, &vec_off, sizeof (vec_off)); | |
17512 | } | |
17513 | ||
17514 | htab_delete (str_table); | |
3876f04e | 17515 | htab_delete (symbol_hash_table); |
9291a0cd TT |
17516 | } |
17517 | ||
0a5429f6 DE |
17518 | /* Struct to map psymtab to CU index in the index file. */ |
17519 | struct psymtab_cu_index_map | |
17520 | { | |
17521 | struct partial_symtab *psymtab; | |
17522 | unsigned int cu_index; | |
17523 | }; | |
17524 | ||
17525 | static hashval_t | |
17526 | hash_psymtab_cu_index (const void *item) | |
17527 | { | |
17528 | const struct psymtab_cu_index_map *map = item; | |
17529 | ||
17530 | return htab_hash_pointer (map->psymtab); | |
17531 | } | |
17532 | ||
17533 | static int | |
17534 | eq_psymtab_cu_index (const void *item_lhs, const void *item_rhs) | |
17535 | { | |
17536 | const struct psymtab_cu_index_map *lhs = item_lhs; | |
17537 | const struct psymtab_cu_index_map *rhs = item_rhs; | |
17538 | ||
17539 | return lhs->psymtab == rhs->psymtab; | |
17540 | } | |
17541 | ||
17542 | /* Helper struct for building the address table. */ | |
17543 | struct addrmap_index_data | |
17544 | { | |
17545 | struct objfile *objfile; | |
17546 | struct obstack *addr_obstack; | |
17547 | htab_t cu_index_htab; | |
17548 | ||
17549 | /* Non-zero if the previous_* fields are valid. | |
17550 | We can't write an entry until we see the next entry (since it is only then | |
17551 | that we know the end of the entry). */ | |
17552 | int previous_valid; | |
17553 | /* Index of the CU in the table of all CUs in the index file. */ | |
17554 | unsigned int previous_cu_index; | |
0963b4bd | 17555 | /* Start address of the CU. */ |
0a5429f6 DE |
17556 | CORE_ADDR previous_cu_start; |
17557 | }; | |
17558 | ||
17559 | /* Write an address entry to OBSTACK. */ | |
b89be57b | 17560 | |
9291a0cd | 17561 | static void |
0a5429f6 DE |
17562 | add_address_entry (struct objfile *objfile, struct obstack *obstack, |
17563 | CORE_ADDR start, CORE_ADDR end, unsigned int cu_index) | |
9291a0cd | 17564 | { |
0a5429f6 | 17565 | offset_type cu_index_to_write; |
9291a0cd TT |
17566 | char addr[8]; |
17567 | CORE_ADDR baseaddr; | |
17568 | ||
17569 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
17570 | ||
0a5429f6 DE |
17571 | store_unsigned_integer (addr, 8, BFD_ENDIAN_LITTLE, start - baseaddr); |
17572 | obstack_grow (obstack, addr, 8); | |
17573 | store_unsigned_integer (addr, 8, BFD_ENDIAN_LITTLE, end - baseaddr); | |
17574 | obstack_grow (obstack, addr, 8); | |
17575 | cu_index_to_write = MAYBE_SWAP (cu_index); | |
17576 | obstack_grow (obstack, &cu_index_to_write, sizeof (offset_type)); | |
17577 | } | |
17578 | ||
17579 | /* Worker function for traversing an addrmap to build the address table. */ | |
17580 | ||
17581 | static int | |
17582 | add_address_entry_worker (void *datap, CORE_ADDR start_addr, void *obj) | |
17583 | { | |
17584 | struct addrmap_index_data *data = datap; | |
17585 | struct partial_symtab *pst = obj; | |
0a5429f6 DE |
17586 | |
17587 | if (data->previous_valid) | |
17588 | add_address_entry (data->objfile, data->addr_obstack, | |
17589 | data->previous_cu_start, start_addr, | |
17590 | data->previous_cu_index); | |
17591 | ||
17592 | data->previous_cu_start = start_addr; | |
17593 | if (pst != NULL) | |
17594 | { | |
17595 | struct psymtab_cu_index_map find_map, *map; | |
17596 | find_map.psymtab = pst; | |
17597 | map = htab_find (data->cu_index_htab, &find_map); | |
17598 | gdb_assert (map != NULL); | |
17599 | data->previous_cu_index = map->cu_index; | |
17600 | data->previous_valid = 1; | |
17601 | } | |
17602 | else | |
17603 | data->previous_valid = 0; | |
17604 | ||
17605 | return 0; | |
17606 | } | |
17607 | ||
17608 | /* Write OBJFILE's address map to OBSTACK. | |
17609 | CU_INDEX_HTAB is used to map addrmap entries to their CU indices | |
17610 | in the index file. */ | |
17611 | ||
17612 | static void | |
17613 | write_address_map (struct objfile *objfile, struct obstack *obstack, | |
17614 | htab_t cu_index_htab) | |
17615 | { | |
17616 | struct addrmap_index_data addrmap_index_data; | |
17617 | ||
17618 | /* When writing the address table, we have to cope with the fact that | |
17619 | the addrmap iterator only provides the start of a region; we have to | |
17620 | wait until the next invocation to get the start of the next region. */ | |
17621 | ||
17622 | addrmap_index_data.objfile = objfile; | |
17623 | addrmap_index_data.addr_obstack = obstack; | |
17624 | addrmap_index_data.cu_index_htab = cu_index_htab; | |
17625 | addrmap_index_data.previous_valid = 0; | |
17626 | ||
17627 | addrmap_foreach (objfile->psymtabs_addrmap, add_address_entry_worker, | |
17628 | &addrmap_index_data); | |
17629 | ||
17630 | /* It's highly unlikely the last entry (end address = 0xff...ff) | |
17631 | is valid, but we should still handle it. | |
17632 | The end address is recorded as the start of the next region, but that | |
17633 | doesn't work here. To cope we pass 0xff...ff, this is a rare situation | |
17634 | anyway. */ | |
17635 | if (addrmap_index_data.previous_valid) | |
17636 | add_address_entry (objfile, obstack, | |
17637 | addrmap_index_data.previous_cu_start, (CORE_ADDR) -1, | |
17638 | addrmap_index_data.previous_cu_index); | |
9291a0cd TT |
17639 | } |
17640 | ||
17641 | /* Add a list of partial symbols to SYMTAB. */ | |
b89be57b | 17642 | |
9291a0cd TT |
17643 | static void |
17644 | write_psymbols (struct mapped_symtab *symtab, | |
987d643c | 17645 | htab_t psyms_seen, |
9291a0cd TT |
17646 | struct partial_symbol **psymp, |
17647 | int count, | |
987d643c TT |
17648 | offset_type cu_index, |
17649 | int is_static) | |
9291a0cd TT |
17650 | { |
17651 | for (; count-- > 0; ++psymp) | |
17652 | { | |
987d643c TT |
17653 | void **slot, *lookup; |
17654 | ||
9291a0cd TT |
17655 | if (SYMBOL_LANGUAGE (*psymp) == language_ada) |
17656 | error (_("Ada is not currently supported by the index")); | |
987d643c TT |
17657 | |
17658 | /* We only want to add a given psymbol once. However, we also | |
17659 | want to account for whether it is global or static. So, we | |
17660 | may add it twice, using slightly different values. */ | |
17661 | if (is_static) | |
17662 | { | |
17663 | uintptr_t val = 1 | (uintptr_t) *psymp; | |
17664 | ||
17665 | lookup = (void *) val; | |
17666 | } | |
17667 | else | |
17668 | lookup = *psymp; | |
17669 | ||
17670 | /* Only add a given psymbol once. */ | |
17671 | slot = htab_find_slot (psyms_seen, lookup, INSERT); | |
17672 | if (!*slot) | |
17673 | { | |
17674 | *slot = lookup; | |
bb2f58dc | 17675 | add_index_entry (symtab, SYMBOL_SEARCH_NAME (*psymp), cu_index); |
987d643c | 17676 | } |
9291a0cd TT |
17677 | } |
17678 | } | |
17679 | ||
17680 | /* Write the contents of an ("unfinished") obstack to FILE. Throw an | |
17681 | exception if there is an error. */ | |
b89be57b | 17682 | |
9291a0cd TT |
17683 | static void |
17684 | write_obstack (FILE *file, struct obstack *obstack) | |
17685 | { | |
17686 | if (fwrite (obstack_base (obstack), 1, obstack_object_size (obstack), | |
17687 | file) | |
17688 | != obstack_object_size (obstack)) | |
17689 | error (_("couldn't data write to file")); | |
17690 | } | |
17691 | ||
17692 | /* Unlink a file if the argument is not NULL. */ | |
b89be57b | 17693 | |
9291a0cd TT |
17694 | static void |
17695 | unlink_if_set (void *p) | |
17696 | { | |
17697 | char **filename = p; | |
17698 | if (*filename) | |
17699 | unlink (*filename); | |
17700 | } | |
17701 | ||
1fd400ff TT |
17702 | /* A helper struct used when iterating over debug_types. */ |
17703 | struct signatured_type_index_data | |
17704 | { | |
17705 | struct objfile *objfile; | |
17706 | struct mapped_symtab *symtab; | |
17707 | struct obstack *types_list; | |
987d643c | 17708 | htab_t psyms_seen; |
1fd400ff TT |
17709 | int cu_index; |
17710 | }; | |
17711 | ||
17712 | /* A helper function that writes a single signatured_type to an | |
17713 | obstack. */ | |
b89be57b | 17714 | |
1fd400ff TT |
17715 | static int |
17716 | write_one_signatured_type (void **slot, void *d) | |
17717 | { | |
17718 | struct signatured_type_index_data *info = d; | |
17719 | struct signatured_type *entry = (struct signatured_type *) *slot; | |
e254ef6a DE |
17720 | struct dwarf2_per_cu_data *per_cu = &entry->per_cu; |
17721 | struct partial_symtab *psymtab = per_cu->v.psymtab; | |
1fd400ff TT |
17722 | gdb_byte val[8]; |
17723 | ||
17724 | write_psymbols (info->symtab, | |
987d643c | 17725 | info->psyms_seen, |
3e43a32a MS |
17726 | info->objfile->global_psymbols.list |
17727 | + psymtab->globals_offset, | |
987d643c TT |
17728 | psymtab->n_global_syms, info->cu_index, |
17729 | 0); | |
1fd400ff | 17730 | write_psymbols (info->symtab, |
987d643c | 17731 | info->psyms_seen, |
3e43a32a MS |
17732 | info->objfile->static_psymbols.list |
17733 | + psymtab->statics_offset, | |
987d643c TT |
17734 | psymtab->n_static_syms, info->cu_index, |
17735 | 1); | |
1fd400ff | 17736 | |
b64f50a1 JK |
17737 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, |
17738 | entry->per_cu.offset.sect_off); | |
1fd400ff | 17739 | obstack_grow (info->types_list, val, 8); |
3019eac3 DE |
17740 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, |
17741 | entry->type_offset_in_tu.cu_off); | |
1fd400ff TT |
17742 | obstack_grow (info->types_list, val, 8); |
17743 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, entry->signature); | |
17744 | obstack_grow (info->types_list, val, 8); | |
17745 | ||
17746 | ++info->cu_index; | |
17747 | ||
17748 | return 1; | |
17749 | } | |
17750 | ||
95554aad TT |
17751 | /* Recurse into all "included" dependencies and write their symbols as |
17752 | if they appeared in this psymtab. */ | |
17753 | ||
17754 | static void | |
17755 | recursively_write_psymbols (struct objfile *objfile, | |
17756 | struct partial_symtab *psymtab, | |
17757 | struct mapped_symtab *symtab, | |
17758 | htab_t psyms_seen, | |
17759 | offset_type cu_index) | |
17760 | { | |
17761 | int i; | |
17762 | ||
17763 | for (i = 0; i < psymtab->number_of_dependencies; ++i) | |
17764 | if (psymtab->dependencies[i]->user != NULL) | |
17765 | recursively_write_psymbols (objfile, psymtab->dependencies[i], | |
17766 | symtab, psyms_seen, cu_index); | |
17767 | ||
17768 | write_psymbols (symtab, | |
17769 | psyms_seen, | |
17770 | objfile->global_psymbols.list + psymtab->globals_offset, | |
17771 | psymtab->n_global_syms, cu_index, | |
17772 | 0); | |
17773 | write_psymbols (symtab, | |
17774 | psyms_seen, | |
17775 | objfile->static_psymbols.list + psymtab->statics_offset, | |
17776 | psymtab->n_static_syms, cu_index, | |
17777 | 1); | |
17778 | } | |
17779 | ||
9291a0cd | 17780 | /* Create an index file for OBJFILE in the directory DIR. */ |
b89be57b | 17781 | |
9291a0cd TT |
17782 | static void |
17783 | write_psymtabs_to_index (struct objfile *objfile, const char *dir) | |
17784 | { | |
17785 | struct cleanup *cleanup; | |
17786 | char *filename, *cleanup_filename; | |
1fd400ff TT |
17787 | struct obstack contents, addr_obstack, constant_pool, symtab_obstack; |
17788 | struct obstack cu_list, types_cu_list; | |
9291a0cd TT |
17789 | int i; |
17790 | FILE *out_file; | |
17791 | struct mapped_symtab *symtab; | |
17792 | offset_type val, size_of_contents, total_len; | |
17793 | struct stat st; | |
987d643c | 17794 | htab_t psyms_seen; |
0a5429f6 DE |
17795 | htab_t cu_index_htab; |
17796 | struct psymtab_cu_index_map *psymtab_cu_index_map; | |
9291a0cd | 17797 | |
b4f2f049 | 17798 | if (!objfile->psymtabs || !objfile->psymtabs_addrmap) |
9291a0cd | 17799 | return; |
b4f2f049 | 17800 | |
9291a0cd TT |
17801 | if (dwarf2_per_objfile->using_index) |
17802 | error (_("Cannot use an index to create the index")); | |
17803 | ||
8b70b953 TT |
17804 | if (VEC_length (dwarf2_section_info_def, dwarf2_per_objfile->types) > 1) |
17805 | error (_("Cannot make an index when the file has multiple .debug_types sections")); | |
17806 | ||
9291a0cd | 17807 | if (stat (objfile->name, &st) < 0) |
7e17e088 | 17808 | perror_with_name (objfile->name); |
9291a0cd TT |
17809 | |
17810 | filename = concat (dir, SLASH_STRING, lbasename (objfile->name), | |
17811 | INDEX_SUFFIX, (char *) NULL); | |
17812 | cleanup = make_cleanup (xfree, filename); | |
17813 | ||
17814 | out_file = fopen (filename, "wb"); | |
17815 | if (!out_file) | |
17816 | error (_("Can't open `%s' for writing"), filename); | |
17817 | ||
17818 | cleanup_filename = filename; | |
17819 | make_cleanup (unlink_if_set, &cleanup_filename); | |
17820 | ||
17821 | symtab = create_mapped_symtab (); | |
17822 | make_cleanup (cleanup_mapped_symtab, symtab); | |
17823 | ||
17824 | obstack_init (&addr_obstack); | |
17825 | make_cleanup_obstack_free (&addr_obstack); | |
17826 | ||
17827 | obstack_init (&cu_list); | |
17828 | make_cleanup_obstack_free (&cu_list); | |
17829 | ||
1fd400ff TT |
17830 | obstack_init (&types_cu_list); |
17831 | make_cleanup_obstack_free (&types_cu_list); | |
17832 | ||
987d643c TT |
17833 | psyms_seen = htab_create_alloc (100, htab_hash_pointer, htab_eq_pointer, |
17834 | NULL, xcalloc, xfree); | |
96408a79 | 17835 | make_cleanup_htab_delete (psyms_seen); |
987d643c | 17836 | |
0a5429f6 DE |
17837 | /* While we're scanning CU's create a table that maps a psymtab pointer |
17838 | (which is what addrmap records) to its index (which is what is recorded | |
17839 | in the index file). This will later be needed to write the address | |
17840 | table. */ | |
17841 | cu_index_htab = htab_create_alloc (100, | |
17842 | hash_psymtab_cu_index, | |
17843 | eq_psymtab_cu_index, | |
17844 | NULL, xcalloc, xfree); | |
96408a79 | 17845 | make_cleanup_htab_delete (cu_index_htab); |
0a5429f6 DE |
17846 | psymtab_cu_index_map = (struct psymtab_cu_index_map *) |
17847 | xmalloc (sizeof (struct psymtab_cu_index_map) | |
17848 | * dwarf2_per_objfile->n_comp_units); | |
17849 | make_cleanup (xfree, psymtab_cu_index_map); | |
17850 | ||
17851 | /* The CU list is already sorted, so we don't need to do additional | |
1fd400ff TT |
17852 | work here. Also, the debug_types entries do not appear in |
17853 | all_comp_units, but only in their own hash table. */ | |
9291a0cd TT |
17854 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
17855 | { | |
3e43a32a MS |
17856 | struct dwarf2_per_cu_data *per_cu |
17857 | = dwarf2_per_objfile->all_comp_units[i]; | |
e254ef6a | 17858 | struct partial_symtab *psymtab = per_cu->v.psymtab; |
9291a0cd | 17859 | gdb_byte val[8]; |
0a5429f6 DE |
17860 | struct psymtab_cu_index_map *map; |
17861 | void **slot; | |
9291a0cd | 17862 | |
95554aad TT |
17863 | if (psymtab->user == NULL) |
17864 | recursively_write_psymbols (objfile, psymtab, symtab, psyms_seen, i); | |
9291a0cd | 17865 | |
0a5429f6 DE |
17866 | map = &psymtab_cu_index_map[i]; |
17867 | map->psymtab = psymtab; | |
17868 | map->cu_index = i; | |
17869 | slot = htab_find_slot (cu_index_htab, map, INSERT); | |
17870 | gdb_assert (slot != NULL); | |
17871 | gdb_assert (*slot == NULL); | |
17872 | *slot = map; | |
9291a0cd | 17873 | |
b64f50a1 JK |
17874 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, |
17875 | per_cu->offset.sect_off); | |
9291a0cd | 17876 | obstack_grow (&cu_list, val, 8); |
e254ef6a | 17877 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, per_cu->length); |
9291a0cd TT |
17878 | obstack_grow (&cu_list, val, 8); |
17879 | } | |
17880 | ||
0a5429f6 DE |
17881 | /* Dump the address map. */ |
17882 | write_address_map (objfile, &addr_obstack, cu_index_htab); | |
17883 | ||
1fd400ff TT |
17884 | /* Write out the .debug_type entries, if any. */ |
17885 | if (dwarf2_per_objfile->signatured_types) | |
17886 | { | |
17887 | struct signatured_type_index_data sig_data; | |
17888 | ||
17889 | sig_data.objfile = objfile; | |
17890 | sig_data.symtab = symtab; | |
17891 | sig_data.types_list = &types_cu_list; | |
987d643c | 17892 | sig_data.psyms_seen = psyms_seen; |
1fd400ff TT |
17893 | sig_data.cu_index = dwarf2_per_objfile->n_comp_units; |
17894 | htab_traverse_noresize (dwarf2_per_objfile->signatured_types, | |
17895 | write_one_signatured_type, &sig_data); | |
17896 | } | |
17897 | ||
9291a0cd TT |
17898 | obstack_init (&constant_pool); |
17899 | make_cleanup_obstack_free (&constant_pool); | |
17900 | obstack_init (&symtab_obstack); | |
17901 | make_cleanup_obstack_free (&symtab_obstack); | |
17902 | write_hash_table (symtab, &symtab_obstack, &constant_pool); | |
17903 | ||
17904 | obstack_init (&contents); | |
17905 | make_cleanup_obstack_free (&contents); | |
1fd400ff | 17906 | size_of_contents = 6 * sizeof (offset_type); |
9291a0cd TT |
17907 | total_len = size_of_contents; |
17908 | ||
17909 | /* The version number. */ | |
481860b3 | 17910 | val = MAYBE_SWAP (6); |
9291a0cd TT |
17911 | obstack_grow (&contents, &val, sizeof (val)); |
17912 | ||
17913 | /* The offset of the CU list from the start of the file. */ | |
17914 | val = MAYBE_SWAP (total_len); | |
17915 | obstack_grow (&contents, &val, sizeof (val)); | |
17916 | total_len += obstack_object_size (&cu_list); | |
17917 | ||
1fd400ff TT |
17918 | /* The offset of the types CU list from the start of the file. */ |
17919 | val = MAYBE_SWAP (total_len); | |
17920 | obstack_grow (&contents, &val, sizeof (val)); | |
17921 | total_len += obstack_object_size (&types_cu_list); | |
17922 | ||
9291a0cd TT |
17923 | /* The offset of the address table from the start of the file. */ |
17924 | val = MAYBE_SWAP (total_len); | |
17925 | obstack_grow (&contents, &val, sizeof (val)); | |
17926 | total_len += obstack_object_size (&addr_obstack); | |
17927 | ||
17928 | /* The offset of the symbol table from the start of the file. */ | |
17929 | val = MAYBE_SWAP (total_len); | |
17930 | obstack_grow (&contents, &val, sizeof (val)); | |
17931 | total_len += obstack_object_size (&symtab_obstack); | |
17932 | ||
17933 | /* The offset of the constant pool from the start of the file. */ | |
17934 | val = MAYBE_SWAP (total_len); | |
17935 | obstack_grow (&contents, &val, sizeof (val)); | |
17936 | total_len += obstack_object_size (&constant_pool); | |
17937 | ||
17938 | gdb_assert (obstack_object_size (&contents) == size_of_contents); | |
17939 | ||
17940 | write_obstack (out_file, &contents); | |
17941 | write_obstack (out_file, &cu_list); | |
1fd400ff | 17942 | write_obstack (out_file, &types_cu_list); |
9291a0cd TT |
17943 | write_obstack (out_file, &addr_obstack); |
17944 | write_obstack (out_file, &symtab_obstack); | |
17945 | write_obstack (out_file, &constant_pool); | |
17946 | ||
17947 | fclose (out_file); | |
17948 | ||
17949 | /* We want to keep the file, so we set cleanup_filename to NULL | |
17950 | here. See unlink_if_set. */ | |
17951 | cleanup_filename = NULL; | |
17952 | ||
17953 | do_cleanups (cleanup); | |
17954 | } | |
17955 | ||
90476074 TT |
17956 | /* Implementation of the `save gdb-index' command. |
17957 | ||
17958 | Note that the file format used by this command is documented in the | |
17959 | GDB manual. Any changes here must be documented there. */ | |
11570e71 | 17960 | |
9291a0cd TT |
17961 | static void |
17962 | save_gdb_index_command (char *arg, int from_tty) | |
17963 | { | |
17964 | struct objfile *objfile; | |
17965 | ||
17966 | if (!arg || !*arg) | |
96d19272 | 17967 | error (_("usage: save gdb-index DIRECTORY")); |
9291a0cd TT |
17968 | |
17969 | ALL_OBJFILES (objfile) | |
17970 | { | |
17971 | struct stat st; | |
17972 | ||
17973 | /* If the objfile does not correspond to an actual file, skip it. */ | |
17974 | if (stat (objfile->name, &st) < 0) | |
17975 | continue; | |
17976 | ||
17977 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); | |
17978 | if (dwarf2_per_objfile) | |
17979 | { | |
17980 | volatile struct gdb_exception except; | |
17981 | ||
17982 | TRY_CATCH (except, RETURN_MASK_ERROR) | |
17983 | { | |
17984 | write_psymtabs_to_index (objfile, arg); | |
17985 | } | |
17986 | if (except.reason < 0) | |
17987 | exception_fprintf (gdb_stderr, except, | |
17988 | _("Error while writing index for `%s': "), | |
17989 | objfile->name); | |
17990 | } | |
17991 | } | |
dce234bc PP |
17992 | } |
17993 | ||
9291a0cd TT |
17994 | \f |
17995 | ||
9eae7c52 TT |
17996 | int dwarf2_always_disassemble; |
17997 | ||
17998 | static void | |
17999 | show_dwarf2_always_disassemble (struct ui_file *file, int from_tty, | |
18000 | struct cmd_list_element *c, const char *value) | |
18001 | { | |
3e43a32a MS |
18002 | fprintf_filtered (file, |
18003 | _("Whether to always disassemble " | |
18004 | "DWARF expressions is %s.\n"), | |
9eae7c52 TT |
18005 | value); |
18006 | } | |
18007 | ||
900e11f9 JK |
18008 | static void |
18009 | show_check_physname (struct ui_file *file, int from_tty, | |
18010 | struct cmd_list_element *c, const char *value) | |
18011 | { | |
18012 | fprintf_filtered (file, | |
18013 | _("Whether to check \"physname\" is %s.\n"), | |
18014 | value); | |
18015 | } | |
18016 | ||
6502dd73 DJ |
18017 | void _initialize_dwarf2_read (void); |
18018 | ||
18019 | void | |
18020 | _initialize_dwarf2_read (void) | |
18021 | { | |
96d19272 JK |
18022 | struct cmd_list_element *c; |
18023 | ||
dce234bc | 18024 | dwarf2_objfile_data_key |
c1bd65d0 | 18025 | = register_objfile_data_with_cleanup (NULL, dwarf2_per_objfile_free); |
ae038cb0 | 18026 | |
1bedd215 AC |
18027 | add_prefix_cmd ("dwarf2", class_maintenance, set_dwarf2_cmd, _("\ |
18028 | Set DWARF 2 specific variables.\n\ | |
18029 | Configure DWARF 2 variables such as the cache size"), | |
ae038cb0 DJ |
18030 | &set_dwarf2_cmdlist, "maintenance set dwarf2 ", |
18031 | 0/*allow-unknown*/, &maintenance_set_cmdlist); | |
18032 | ||
1bedd215 AC |
18033 | add_prefix_cmd ("dwarf2", class_maintenance, show_dwarf2_cmd, _("\ |
18034 | Show DWARF 2 specific variables\n\ | |
18035 | Show DWARF 2 variables such as the cache size"), | |
ae038cb0 DJ |
18036 | &show_dwarf2_cmdlist, "maintenance show dwarf2 ", |
18037 | 0/*allow-unknown*/, &maintenance_show_cmdlist); | |
18038 | ||
18039 | add_setshow_zinteger_cmd ("max-cache-age", class_obscure, | |
7915a72c AC |
18040 | &dwarf2_max_cache_age, _("\ |
18041 | Set the upper bound on the age of cached dwarf2 compilation units."), _("\ | |
18042 | Show the upper bound on the age of cached dwarf2 compilation units."), _("\ | |
18043 | A higher limit means that cached compilation units will be stored\n\ | |
18044 | in memory longer, and more total memory will be used. Zero disables\n\ | |
18045 | caching, which can slow down startup."), | |
2c5b56ce | 18046 | NULL, |
920d2a44 | 18047 | show_dwarf2_max_cache_age, |
2c5b56ce | 18048 | &set_dwarf2_cmdlist, |
ae038cb0 | 18049 | &show_dwarf2_cmdlist); |
d97bc12b | 18050 | |
9eae7c52 TT |
18051 | add_setshow_boolean_cmd ("always-disassemble", class_obscure, |
18052 | &dwarf2_always_disassemble, _("\ | |
18053 | Set whether `info address' always disassembles DWARF expressions."), _("\ | |
18054 | Show whether `info address' always disassembles DWARF expressions."), _("\ | |
18055 | When enabled, DWARF expressions are always printed in an assembly-like\n\ | |
18056 | syntax. When disabled, expressions will be printed in a more\n\ | |
18057 | conversational style, when possible."), | |
18058 | NULL, | |
18059 | show_dwarf2_always_disassemble, | |
18060 | &set_dwarf2_cmdlist, | |
18061 | &show_dwarf2_cmdlist); | |
18062 | ||
d97bc12b DE |
18063 | add_setshow_zinteger_cmd ("dwarf2-die", no_class, &dwarf2_die_debug, _("\ |
18064 | Set debugging of the dwarf2 DIE reader."), _("\ | |
18065 | Show debugging of the dwarf2 DIE reader."), _("\ | |
18066 | When enabled (non-zero), DIEs are dumped after they are read in.\n\ | |
18067 | The value is the maximum depth to print."), | |
18068 | NULL, | |
18069 | NULL, | |
18070 | &setdebuglist, &showdebuglist); | |
9291a0cd | 18071 | |
900e11f9 JK |
18072 | add_setshow_boolean_cmd ("check-physname", no_class, &check_physname, _("\ |
18073 | Set cross-checking of \"physname\" code against demangler."), _("\ | |
18074 | Show cross-checking of \"physname\" code against demangler."), _("\ | |
18075 | When enabled, GDB's internal \"physname\" code is checked against\n\ | |
18076 | the demangler."), | |
18077 | NULL, show_check_physname, | |
18078 | &setdebuglist, &showdebuglist); | |
18079 | ||
96d19272 | 18080 | c = add_cmd ("gdb-index", class_files, save_gdb_index_command, |
11570e71 | 18081 | _("\ |
fc1a9d6e | 18082 | Save a gdb-index file.\n\ |
11570e71 | 18083 | Usage: save gdb-index DIRECTORY"), |
96d19272 JK |
18084 | &save_cmdlist); |
18085 | set_cmd_completer (c, filename_completer); | |
6502dd73 | 18086 | } |