Commit | Line | Data |
---|---|---|
c906108c | 1 | /* DWARF 2 debugging format support for GDB. |
917c78fc | 2 | |
28e7fd62 | 3 | Copyright (C) 1994-2013 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" | |
80626a55 | 33 | #include "elf-bfd.h" |
c906108c SS |
34 | #include "symtab.h" |
35 | #include "gdbtypes.h" | |
c906108c | 36 | #include "objfiles.h" |
fa8f86ff | 37 | #include "dwarf2.h" |
c906108c SS |
38 | #include "buildsym.h" |
39 | #include "demangle.h" | |
50f182aa | 40 | #include "gdb-demangle.h" |
c906108c | 41 | #include "expression.h" |
d5166ae1 | 42 | #include "filenames.h" /* for DOSish file names */ |
2e276125 | 43 | #include "macrotab.h" |
c906108c SS |
44 | #include "language.h" |
45 | #include "complaints.h" | |
357e46e7 | 46 | #include "bcache.h" |
4c2df51b DJ |
47 | #include "dwarf2expr.h" |
48 | #include "dwarf2loc.h" | |
9219021c | 49 | #include "cp-support.h" |
72bf9492 | 50 | #include "hashtab.h" |
ae038cb0 DJ |
51 | #include "command.h" |
52 | #include "gdbcmd.h" | |
edb3359d | 53 | #include "block.h" |
ff013f42 | 54 | #include "addrmap.h" |
94af9270 KS |
55 | #include "typeprint.h" |
56 | #include "jv-lang.h" | |
ccefe4c4 | 57 | #include "psympriv.h" |
9291a0cd TT |
58 | #include "exceptions.h" |
59 | #include "gdb_stat.h" | |
96d19272 | 60 | #include "completer.h" |
34eaf542 | 61 | #include "vec.h" |
98bfdba5 | 62 | #include "c-lang.h" |
a766d390 | 63 | #include "go-lang.h" |
98bfdba5 | 64 | #include "valprint.h" |
3019eac3 | 65 | #include "gdbcore.h" /* for gnutarget */ |
156942c7 | 66 | #include "gdb/gdb-index.h" |
60d5a603 | 67 | #include <ctype.h> |
cbb099e8 | 68 | #include "gdb_bfd.h" |
4357ac6c | 69 | #include "f-lang.h" |
05cba821 | 70 | #include "source.h" |
4c2df51b | 71 | |
c906108c SS |
72 | #include <fcntl.h> |
73 | #include "gdb_string.h" | |
4bdf3d34 | 74 | #include "gdb_assert.h" |
c906108c | 75 | #include <sys/types.h> |
d8151005 | 76 | |
34eaf542 TT |
77 | typedef struct symbol *symbolp; |
78 | DEF_VEC_P (symbolp); | |
79 | ||
45cfd468 DE |
80 | /* When non-zero, print basic high level tracing messages. |
81 | This is in contrast to the low level DIE reading of dwarf2_die_debug. */ | |
82 | static int dwarf2_read_debug = 0; | |
83 | ||
d97bc12b | 84 | /* When non-zero, dump DIEs after they are read in. */ |
ccce17b0 | 85 | static unsigned int dwarf2_die_debug = 0; |
d97bc12b | 86 | |
900e11f9 JK |
87 | /* When non-zero, cross-check physname against demangler. */ |
88 | static int check_physname = 0; | |
89 | ||
481860b3 | 90 | /* When non-zero, do not reject deprecated .gdb_index sections. */ |
e615022a | 91 | static int use_deprecated_index_sections = 0; |
481860b3 | 92 | |
6502dd73 DJ |
93 | static const struct objfile_data *dwarf2_objfile_data_key; |
94 | ||
f1e6e072 TT |
95 | /* The "aclass" indices for various kinds of computed DWARF symbols. */ |
96 | ||
97 | static int dwarf2_locexpr_index; | |
98 | static int dwarf2_loclist_index; | |
99 | static int dwarf2_locexpr_block_index; | |
100 | static int dwarf2_loclist_block_index; | |
101 | ||
dce234bc PP |
102 | struct dwarf2_section_info |
103 | { | |
104 | asection *asection; | |
105 | gdb_byte *buffer; | |
106 | bfd_size_type size; | |
be391dca TT |
107 | /* True if we have tried to read this section. */ |
108 | int readin; | |
dce234bc PP |
109 | }; |
110 | ||
8b70b953 TT |
111 | typedef struct dwarf2_section_info dwarf2_section_info_def; |
112 | DEF_VEC_O (dwarf2_section_info_def); | |
113 | ||
9291a0cd TT |
114 | /* All offsets in the index are of this type. It must be |
115 | architecture-independent. */ | |
116 | typedef uint32_t offset_type; | |
117 | ||
118 | DEF_VEC_I (offset_type); | |
119 | ||
156942c7 DE |
120 | /* Ensure only legit values are used. */ |
121 | #define DW2_GDB_INDEX_SYMBOL_STATIC_SET_VALUE(cu_index, value) \ | |
122 | do { \ | |
123 | gdb_assert ((unsigned int) (value) <= 1); \ | |
124 | GDB_INDEX_SYMBOL_STATIC_SET_VALUE((cu_index), (value)); \ | |
125 | } while (0) | |
126 | ||
127 | /* Ensure only legit values are used. */ | |
128 | #define DW2_GDB_INDEX_SYMBOL_KIND_SET_VALUE(cu_index, value) \ | |
129 | do { \ | |
130 | gdb_assert ((value) >= GDB_INDEX_SYMBOL_KIND_TYPE \ | |
131 | && (value) <= GDB_INDEX_SYMBOL_KIND_OTHER); \ | |
132 | GDB_INDEX_SYMBOL_KIND_SET_VALUE((cu_index), (value)); \ | |
133 | } while (0) | |
134 | ||
135 | /* Ensure we don't use more than the alloted nuber of bits for the CU. */ | |
136 | #define DW2_GDB_INDEX_CU_SET_VALUE(cu_index, value) \ | |
137 | do { \ | |
138 | gdb_assert (((value) & ~GDB_INDEX_CU_MASK) == 0); \ | |
139 | GDB_INDEX_CU_SET_VALUE((cu_index), (value)); \ | |
140 | } while (0) | |
141 | ||
9291a0cd TT |
142 | /* A description of the mapped index. The file format is described in |
143 | a comment by the code that writes the index. */ | |
144 | struct mapped_index | |
145 | { | |
559a7a62 JK |
146 | /* Index data format version. */ |
147 | int version; | |
148 | ||
9291a0cd TT |
149 | /* The total length of the buffer. */ |
150 | off_t total_size; | |
b11b1f88 | 151 | |
9291a0cd TT |
152 | /* A pointer to the address table data. */ |
153 | const gdb_byte *address_table; | |
b11b1f88 | 154 | |
9291a0cd TT |
155 | /* Size of the address table data in bytes. */ |
156 | offset_type address_table_size; | |
b11b1f88 | 157 | |
3876f04e DE |
158 | /* The symbol table, implemented as a hash table. */ |
159 | const offset_type *symbol_table; | |
b11b1f88 | 160 | |
9291a0cd | 161 | /* Size in slots, each slot is 2 offset_types. */ |
3876f04e | 162 | offset_type symbol_table_slots; |
b11b1f88 | 163 | |
9291a0cd TT |
164 | /* A pointer to the constant pool. */ |
165 | const char *constant_pool; | |
166 | }; | |
167 | ||
95554aad TT |
168 | typedef struct dwarf2_per_cu_data *dwarf2_per_cu_ptr; |
169 | DEF_VEC_P (dwarf2_per_cu_ptr); | |
170 | ||
9cdd5dbd DE |
171 | /* Collection of data recorded per objfile. |
172 | This hangs off of dwarf2_objfile_data_key. */ | |
173 | ||
6502dd73 DJ |
174 | struct dwarf2_per_objfile |
175 | { | |
dce234bc PP |
176 | struct dwarf2_section_info info; |
177 | struct dwarf2_section_info abbrev; | |
178 | struct dwarf2_section_info line; | |
dce234bc PP |
179 | struct dwarf2_section_info loc; |
180 | struct dwarf2_section_info macinfo; | |
cf2c3c16 | 181 | struct dwarf2_section_info macro; |
dce234bc PP |
182 | struct dwarf2_section_info str; |
183 | struct dwarf2_section_info ranges; | |
3019eac3 | 184 | struct dwarf2_section_info addr; |
dce234bc PP |
185 | struct dwarf2_section_info frame; |
186 | struct dwarf2_section_info eh_frame; | |
9291a0cd | 187 | struct dwarf2_section_info gdb_index; |
ae038cb0 | 188 | |
8b70b953 TT |
189 | VEC (dwarf2_section_info_def) *types; |
190 | ||
be391dca TT |
191 | /* Back link. */ |
192 | struct objfile *objfile; | |
193 | ||
d467dd73 | 194 | /* Table of all the compilation units. This is used to locate |
10b3939b | 195 | the target compilation unit of a particular reference. */ |
ae038cb0 DJ |
196 | struct dwarf2_per_cu_data **all_comp_units; |
197 | ||
198 | /* The number of compilation units in ALL_COMP_UNITS. */ | |
199 | int n_comp_units; | |
200 | ||
1fd400ff | 201 | /* The number of .debug_types-related CUs. */ |
d467dd73 | 202 | int n_type_units; |
1fd400ff | 203 | |
d467dd73 | 204 | /* The .debug_types-related CUs (TUs). */ |
b4dd5633 | 205 | struct signatured_type **all_type_units; |
1fd400ff | 206 | |
f4dc4d17 DE |
207 | /* The number of entries in all_type_unit_groups. */ |
208 | int n_type_unit_groups; | |
209 | ||
210 | /* Table of type unit groups. | |
211 | This exists to make it easy to iterate over all CUs and TU groups. */ | |
212 | struct type_unit_group **all_type_unit_groups; | |
213 | ||
214 | /* Table of struct type_unit_group objects. | |
215 | The hash key is the DW_AT_stmt_list value. */ | |
216 | htab_t type_unit_groups; | |
72dca2f5 | 217 | |
348e048f DE |
218 | /* A table mapping .debug_types signatures to its signatured_type entry. |
219 | This is NULL if the .debug_types section hasn't been read in yet. */ | |
220 | htab_t signatured_types; | |
221 | ||
f4dc4d17 DE |
222 | /* Type unit statistics, to see how well the scaling improvements |
223 | are doing. */ | |
224 | struct tu_stats | |
225 | { | |
226 | int nr_uniq_abbrev_tables; | |
227 | int nr_symtabs; | |
228 | int nr_symtab_sharers; | |
229 | int nr_stmt_less_type_units; | |
230 | } tu_stats; | |
231 | ||
232 | /* A chain of compilation units that are currently read in, so that | |
233 | they can be freed later. */ | |
234 | struct dwarf2_per_cu_data *read_in_chain; | |
235 | ||
3019eac3 DE |
236 | /* A table mapping DW_AT_dwo_name values to struct dwo_file objects. |
237 | This is NULL if the table hasn't been allocated yet. */ | |
238 | htab_t dwo_files; | |
239 | ||
80626a55 DE |
240 | /* Non-zero if we've check for whether there is a DWP file. */ |
241 | int dwp_checked; | |
242 | ||
243 | /* The DWP file if there is one, or NULL. */ | |
244 | struct dwp_file *dwp_file; | |
245 | ||
36586728 TT |
246 | /* The shared '.dwz' file, if one exists. This is used when the |
247 | original data was compressed using 'dwz -m'. */ | |
248 | struct dwz_file *dwz_file; | |
249 | ||
72dca2f5 FR |
250 | /* A flag indicating wether this objfile has a section loaded at a |
251 | VMA of 0. */ | |
252 | int has_section_at_zero; | |
9291a0cd | 253 | |
ae2de4f8 DE |
254 | /* True if we are using the mapped index, |
255 | or we are faking it for OBJF_READNOW's sake. */ | |
9291a0cd TT |
256 | unsigned char using_index; |
257 | ||
ae2de4f8 | 258 | /* The mapped index, or NULL if .gdb_index is missing or not being used. */ |
9291a0cd | 259 | struct mapped_index *index_table; |
98bfdba5 | 260 | |
7b9f3c50 | 261 | /* When using index_table, this keeps track of all quick_file_names entries. |
56e64610 DE |
262 | TUs typically share line table entries with a CU, so we maintain a |
263 | separate table of all line table entries to support the sharing. | |
264 | Note that while there can be way more TUs than CUs, we've already | |
265 | sorted all the TUs into "type unit groups", grouped by their | |
266 | DW_AT_stmt_list value. Therefore the only sharing done here is with a | |
267 | CU and its associated TU group if there is one. */ | |
7b9f3c50 DE |
268 | htab_t quick_file_names_table; |
269 | ||
98bfdba5 PA |
270 | /* Set during partial symbol reading, to prevent queueing of full |
271 | symbols. */ | |
272 | int reading_partial_symbols; | |
673bfd45 | 273 | |
dee91e82 | 274 | /* Table mapping type DIEs to their struct type *. |
673bfd45 | 275 | This is NULL if not allocated yet. |
dee91e82 DE |
276 | The mapping is done via (CU/TU signature + DIE offset) -> type. */ |
277 | htab_t die_type_hash; | |
95554aad TT |
278 | |
279 | /* The CUs we recently read. */ | |
280 | VEC (dwarf2_per_cu_ptr) *just_read_cus; | |
6502dd73 DJ |
281 | }; |
282 | ||
283 | static struct dwarf2_per_objfile *dwarf2_per_objfile; | |
c906108c | 284 | |
251d32d9 | 285 | /* Default names of the debugging sections. */ |
c906108c | 286 | |
233a11ab CS |
287 | /* Note that if the debugging section has been compressed, it might |
288 | have a name like .zdebug_info. */ | |
289 | ||
9cdd5dbd DE |
290 | static const struct dwarf2_debug_sections dwarf2_elf_names = |
291 | { | |
251d32d9 TG |
292 | { ".debug_info", ".zdebug_info" }, |
293 | { ".debug_abbrev", ".zdebug_abbrev" }, | |
294 | { ".debug_line", ".zdebug_line" }, | |
295 | { ".debug_loc", ".zdebug_loc" }, | |
296 | { ".debug_macinfo", ".zdebug_macinfo" }, | |
cf2c3c16 | 297 | { ".debug_macro", ".zdebug_macro" }, |
251d32d9 TG |
298 | { ".debug_str", ".zdebug_str" }, |
299 | { ".debug_ranges", ".zdebug_ranges" }, | |
300 | { ".debug_types", ".zdebug_types" }, | |
3019eac3 | 301 | { ".debug_addr", ".zdebug_addr" }, |
251d32d9 TG |
302 | { ".debug_frame", ".zdebug_frame" }, |
303 | { ".eh_frame", NULL }, | |
24d3216f TT |
304 | { ".gdb_index", ".zgdb_index" }, |
305 | 23 | |
251d32d9 | 306 | }; |
c906108c | 307 | |
80626a55 | 308 | /* List of DWO/DWP sections. */ |
3019eac3 | 309 | |
80626a55 | 310 | static const struct dwop_section_names |
3019eac3 DE |
311 | { |
312 | struct dwarf2_section_names abbrev_dwo; | |
313 | struct dwarf2_section_names info_dwo; | |
314 | struct dwarf2_section_names line_dwo; | |
315 | struct dwarf2_section_names loc_dwo; | |
09262596 DE |
316 | struct dwarf2_section_names macinfo_dwo; |
317 | struct dwarf2_section_names macro_dwo; | |
3019eac3 DE |
318 | struct dwarf2_section_names str_dwo; |
319 | struct dwarf2_section_names str_offsets_dwo; | |
320 | struct dwarf2_section_names types_dwo; | |
80626a55 DE |
321 | struct dwarf2_section_names cu_index; |
322 | struct dwarf2_section_names tu_index; | |
3019eac3 | 323 | } |
80626a55 | 324 | dwop_section_names = |
3019eac3 DE |
325 | { |
326 | { ".debug_abbrev.dwo", ".zdebug_abbrev.dwo" }, | |
327 | { ".debug_info.dwo", ".zdebug_info.dwo" }, | |
328 | { ".debug_line.dwo", ".zdebug_line.dwo" }, | |
329 | { ".debug_loc.dwo", ".zdebug_loc.dwo" }, | |
09262596 DE |
330 | { ".debug_macinfo.dwo", ".zdebug_macinfo.dwo" }, |
331 | { ".debug_macro.dwo", ".zdebug_macro.dwo" }, | |
3019eac3 DE |
332 | { ".debug_str.dwo", ".zdebug_str.dwo" }, |
333 | { ".debug_str_offsets.dwo", ".zdebug_str_offsets.dwo" }, | |
334 | { ".debug_types.dwo", ".zdebug_types.dwo" }, | |
80626a55 DE |
335 | { ".debug_cu_index", ".zdebug_cu_index" }, |
336 | { ".debug_tu_index", ".zdebug_tu_index" }, | |
3019eac3 DE |
337 | }; |
338 | ||
c906108c SS |
339 | /* local data types */ |
340 | ||
107d2387 AC |
341 | /* The data in a compilation unit header, after target2host |
342 | translation, looks like this. */ | |
c906108c | 343 | struct comp_unit_head |
a738430d | 344 | { |
c764a876 | 345 | unsigned int length; |
a738430d | 346 | short version; |
a738430d MK |
347 | unsigned char addr_size; |
348 | unsigned char signed_addr_p; | |
b64f50a1 | 349 | sect_offset abbrev_offset; |
57349743 | 350 | |
a738430d MK |
351 | /* Size of file offsets; either 4 or 8. */ |
352 | unsigned int offset_size; | |
57349743 | 353 | |
a738430d MK |
354 | /* Size of the length field; either 4 or 12. */ |
355 | unsigned int initial_length_size; | |
57349743 | 356 | |
a738430d MK |
357 | /* Offset to the first byte of this compilation unit header in the |
358 | .debug_info section, for resolving relative reference dies. */ | |
b64f50a1 | 359 | sect_offset offset; |
57349743 | 360 | |
d00adf39 DE |
361 | /* Offset to first die in this cu from the start of the cu. |
362 | This will be the first byte following the compilation unit header. */ | |
b64f50a1 | 363 | cu_offset first_die_offset; |
a738430d | 364 | }; |
c906108c | 365 | |
3da10d80 KS |
366 | /* Type used for delaying computation of method physnames. |
367 | See comments for compute_delayed_physnames. */ | |
368 | struct delayed_method_info | |
369 | { | |
370 | /* The type to which the method is attached, i.e., its parent class. */ | |
371 | struct type *type; | |
372 | ||
373 | /* The index of the method in the type's function fieldlists. */ | |
374 | int fnfield_index; | |
375 | ||
376 | /* The index of the method in the fieldlist. */ | |
377 | int index; | |
378 | ||
379 | /* The name of the DIE. */ | |
380 | const char *name; | |
381 | ||
382 | /* The DIE associated with this method. */ | |
383 | struct die_info *die; | |
384 | }; | |
385 | ||
386 | typedef struct delayed_method_info delayed_method_info; | |
387 | DEF_VEC_O (delayed_method_info); | |
388 | ||
e7c27a73 DJ |
389 | /* Internal state when decoding a particular compilation unit. */ |
390 | struct dwarf2_cu | |
391 | { | |
392 | /* The objfile containing this compilation unit. */ | |
393 | struct objfile *objfile; | |
394 | ||
d00adf39 | 395 | /* The header of the compilation unit. */ |
e7c27a73 | 396 | struct comp_unit_head header; |
e142c38c | 397 | |
d00adf39 DE |
398 | /* Base address of this compilation unit. */ |
399 | CORE_ADDR base_address; | |
400 | ||
401 | /* Non-zero if base_address has been set. */ | |
402 | int base_known; | |
403 | ||
e142c38c DJ |
404 | /* The language we are debugging. */ |
405 | enum language language; | |
406 | const struct language_defn *language_defn; | |
407 | ||
b0f35d58 DL |
408 | const char *producer; |
409 | ||
e142c38c DJ |
410 | /* The generic symbol table building routines have separate lists for |
411 | file scope symbols and all all other scopes (local scopes). So | |
412 | we need to select the right one to pass to add_symbol_to_list(). | |
413 | We do it by keeping a pointer to the correct list in list_in_scope. | |
414 | ||
415 | FIXME: The original dwarf code just treated the file scope as the | |
416 | first local scope, and all other local scopes as nested local | |
417 | scopes, and worked fine. Check to see if we really need to | |
418 | distinguish these in buildsym.c. */ | |
419 | struct pending **list_in_scope; | |
420 | ||
433df2d4 DE |
421 | /* The abbrev table for this CU. |
422 | Normally this points to the abbrev table in the objfile. | |
423 | But if DWO_UNIT is non-NULL this is the abbrev table in the DWO file. */ | |
424 | struct abbrev_table *abbrev_table; | |
72bf9492 | 425 | |
b64f50a1 JK |
426 | /* Hash table holding all the loaded partial DIEs |
427 | with partial_die->offset.SECT_OFF as hash. */ | |
72bf9492 DJ |
428 | htab_t partial_dies; |
429 | ||
430 | /* Storage for things with the same lifetime as this read-in compilation | |
431 | unit, including partial DIEs. */ | |
432 | struct obstack comp_unit_obstack; | |
433 | ||
ae038cb0 DJ |
434 | /* When multiple dwarf2_cu structures are living in memory, this field |
435 | chains them all together, so that they can be released efficiently. | |
436 | We will probably also want a generation counter so that most-recently-used | |
437 | compilation units are cached... */ | |
438 | struct dwarf2_per_cu_data *read_in_chain; | |
439 | ||
440 | /* Backchain to our per_cu entry if the tree has been built. */ | |
441 | struct dwarf2_per_cu_data *per_cu; | |
442 | ||
443 | /* How many compilation units ago was this CU last referenced? */ | |
444 | int last_used; | |
445 | ||
b64f50a1 JK |
446 | /* A hash table of DIE cu_offset for following references with |
447 | die_info->offset.sect_off as hash. */ | |
51545339 | 448 | htab_t die_hash; |
10b3939b DJ |
449 | |
450 | /* Full DIEs if read in. */ | |
451 | struct die_info *dies; | |
452 | ||
453 | /* A set of pointers to dwarf2_per_cu_data objects for compilation | |
454 | units referenced by this one. Only set during full symbol processing; | |
455 | partial symbol tables do not have dependencies. */ | |
456 | htab_t dependencies; | |
457 | ||
cb1df416 DJ |
458 | /* Header data from the line table, during full symbol processing. */ |
459 | struct line_header *line_header; | |
460 | ||
3da10d80 KS |
461 | /* A list of methods which need to have physnames computed |
462 | after all type information has been read. */ | |
463 | VEC (delayed_method_info) *method_list; | |
464 | ||
96408a79 SA |
465 | /* To be copied to symtab->call_site_htab. */ |
466 | htab_t call_site_htab; | |
467 | ||
034e5797 DE |
468 | /* Non-NULL if this CU came from a DWO file. |
469 | There is an invariant here that is important to remember: | |
470 | Except for attributes copied from the top level DIE in the "main" | |
471 | (or "stub") file in preparation for reading the DWO file | |
472 | (e.g., DW_AT_GNU_addr_base), we KISS: there is only *one* CU. | |
473 | Either there isn't a DWO file (in which case this is NULL and the point | |
474 | is moot), or there is and either we're not going to read it (in which | |
475 | case this is NULL) or there is and we are reading it (in which case this | |
476 | is non-NULL). */ | |
3019eac3 DE |
477 | struct dwo_unit *dwo_unit; |
478 | ||
479 | /* The DW_AT_addr_base attribute if present, zero otherwise | |
480 | (zero is a valid value though). | |
481 | Note this value comes from the stub CU/TU's DIE. */ | |
482 | ULONGEST addr_base; | |
483 | ||
2e3cf129 DE |
484 | /* The DW_AT_ranges_base attribute if present, zero otherwise |
485 | (zero is a valid value though). | |
486 | Note this value comes from the stub CU/TU's DIE. | |
487 | Also note that the value is zero in the non-DWO case so this value can | |
ab435259 DE |
488 | be used without needing to know whether DWO files are in use or not. |
489 | N.B. This does not apply to DW_AT_ranges appearing in | |
490 | DW_TAG_compile_unit dies. This is a bit of a wart, consider if ever | |
491 | DW_AT_ranges appeared in the DW_TAG_compile_unit of DWO DIEs: then | |
492 | DW_AT_ranges_base *would* have to be applied, and we'd have to care | |
493 | whether the DW_AT_ranges attribute came from the skeleton or DWO. */ | |
2e3cf129 DE |
494 | ULONGEST ranges_base; |
495 | ||
ae038cb0 DJ |
496 | /* Mark used when releasing cached dies. */ |
497 | unsigned int mark : 1; | |
498 | ||
8be455d7 JK |
499 | /* This CU references .debug_loc. See the symtab->locations_valid field. |
500 | This test is imperfect as there may exist optimized debug code not using | |
501 | any location list and still facing inlining issues if handled as | |
502 | unoptimized code. For a future better test see GCC PR other/32998. */ | |
8be455d7 | 503 | unsigned int has_loclist : 1; |
ba919b58 | 504 | |
1b80a9fa JK |
505 | /* These cache the results for producer_is_* fields. CHECKED_PRODUCER is set |
506 | if all the producer_is_* fields are valid. This information is cached | |
507 | because profiling CU expansion showed excessive time spent in | |
508 | producer_is_gxx_lt_4_6. */ | |
ba919b58 TT |
509 | unsigned int checked_producer : 1; |
510 | unsigned int producer_is_gxx_lt_4_6 : 1; | |
1b80a9fa | 511 | unsigned int producer_is_gcc_lt_4_3 : 1; |
685b1105 | 512 | unsigned int producer_is_icc : 1; |
4d4ec4e5 TT |
513 | |
514 | /* When set, the file that we're processing is known to have | |
515 | debugging info for C++ namespaces. GCC 3.3.x did not produce | |
516 | this information, but later versions do. */ | |
517 | ||
518 | unsigned int processing_has_namespace_info : 1; | |
e7c27a73 DJ |
519 | }; |
520 | ||
10b3939b DJ |
521 | /* Persistent data held for a compilation unit, even when not |
522 | processing it. We put a pointer to this structure in the | |
28dee7f5 | 523 | read_symtab_private field of the psymtab. */ |
10b3939b | 524 | |
ae038cb0 DJ |
525 | struct dwarf2_per_cu_data |
526 | { | |
36586728 | 527 | /* The start offset and length of this compilation unit. |
45452591 | 528 | NOTE: Unlike comp_unit_head.length, this length includes |
3019eac3 DE |
529 | initial_length_size. |
530 | If the DIE refers to a DWO file, this is always of the original die, | |
531 | not the DWO file. */ | |
b64f50a1 | 532 | sect_offset offset; |
36586728 | 533 | unsigned int length; |
ae038cb0 DJ |
534 | |
535 | /* Flag indicating this compilation unit will be read in before | |
536 | any of the current compilation units are processed. */ | |
c764a876 | 537 | unsigned int queued : 1; |
ae038cb0 | 538 | |
0d99eb77 DE |
539 | /* This flag will be set when reading partial DIEs if we need to load |
540 | absolutely all DIEs for this compilation unit, instead of just the ones | |
541 | we think are interesting. It gets set if we look for a DIE in the | |
5afb4e99 DJ |
542 | hash table and don't find it. */ |
543 | unsigned int load_all_dies : 1; | |
544 | ||
3019eac3 DE |
545 | /* Non-zero if this CU is from .debug_types. */ |
546 | unsigned int is_debug_types : 1; | |
547 | ||
36586728 TT |
548 | /* Non-zero if this CU is from the .dwz file. */ |
549 | unsigned int is_dwz : 1; | |
550 | ||
3019eac3 DE |
551 | /* The section this CU/TU lives in. |
552 | If the DIE refers to a DWO file, this is always the original die, | |
553 | not the DWO file. */ | |
8a0459fd | 554 | struct dwarf2_section_info *section; |
348e048f | 555 | |
17ea53c3 JK |
556 | /* Set to non-NULL iff this CU is currently loaded. When it gets freed out |
557 | of the CU cache it gets reset to NULL again. */ | |
ae038cb0 | 558 | struct dwarf2_cu *cu; |
1c379e20 | 559 | |
9cdd5dbd DE |
560 | /* The corresponding objfile. |
561 | Normally we can get the objfile from dwarf2_per_objfile. | |
562 | However we can enter this file with just a "per_cu" handle. */ | |
9291a0cd TT |
563 | struct objfile *objfile; |
564 | ||
565 | /* When using partial symbol tables, the 'psymtab' field is active. | |
566 | Otherwise the 'quick' field is active. */ | |
567 | union | |
568 | { | |
569 | /* The partial symbol table associated with this compilation unit, | |
95554aad | 570 | or NULL for unread partial units. */ |
9291a0cd TT |
571 | struct partial_symtab *psymtab; |
572 | ||
573 | /* Data needed by the "quick" functions. */ | |
574 | struct dwarf2_per_cu_quick_data *quick; | |
575 | } v; | |
95554aad | 576 | |
796a7ff8 DE |
577 | /* The CUs we import using DW_TAG_imported_unit. This is filled in |
578 | while reading psymtabs, used to compute the psymtab dependencies, | |
579 | and then cleared. Then it is filled in again while reading full | |
580 | symbols, and only deleted when the objfile is destroyed. | |
581 | ||
582 | This is also used to work around a difference between the way gold | |
583 | generates .gdb_index version <=7 and the way gdb does. Arguably this | |
584 | is a gold bug. For symbols coming from TUs, gold records in the index | |
585 | the CU that includes the TU instead of the TU itself. This breaks | |
586 | dw2_lookup_symbol: It assumes that if the index says symbol X lives | |
587 | in CU/TU Y, then one need only expand Y and a subsequent lookup in Y | |
588 | will find X. Alas TUs live in their own symtab, so after expanding CU Y | |
589 | we need to look in TU Z to find X. Fortunately, this is akin to | |
590 | DW_TAG_imported_unit, so we just use the same mechanism: For | |
591 | .gdb_index version <=7 this also records the TUs that the CU referred | |
592 | to. Concurrently with this change gdb was modified to emit version 8 | |
593 | indices so we only pay a price for gold generated indices. */ | |
594 | VEC (dwarf2_per_cu_ptr) *imported_symtabs; | |
595 | ||
596 | /* Type units are grouped by their DW_AT_stmt_list entry so that they | |
597 | can share them. If this is a TU, this points to the containing | |
598 | symtab. */ | |
599 | struct type_unit_group *type_unit_group; | |
ae038cb0 DJ |
600 | }; |
601 | ||
348e048f DE |
602 | /* Entry in the signatured_types hash table. */ |
603 | ||
604 | struct signatured_type | |
605 | { | |
42e7ad6c DE |
606 | /* The "per_cu" object of this type. |
607 | N.B.: This is the first member so that it's easy to convert pointers | |
608 | between them. */ | |
609 | struct dwarf2_per_cu_data per_cu; | |
610 | ||
3019eac3 | 611 | /* The type's signature. */ |
348e048f DE |
612 | ULONGEST signature; |
613 | ||
3019eac3 DE |
614 | /* Offset in the TU of the type's DIE, as read from the TU header. |
615 | If the definition lives in a DWO file, this value is unusable. */ | |
616 | cu_offset type_offset_in_tu; | |
617 | ||
618 | /* Offset in the section of the type's DIE. | |
619 | If the definition lives in a DWO file, this is the offset in the | |
620 | .debug_types.dwo section. | |
621 | The value is zero until the actual value is known. | |
622 | Zero is otherwise not a valid section offset. */ | |
623 | sect_offset type_offset_in_section; | |
348e048f DE |
624 | }; |
625 | ||
094b34ac DE |
626 | /* A struct that can be used as a hash key for tables based on DW_AT_stmt_list. |
627 | This includes type_unit_group and quick_file_names. */ | |
628 | ||
629 | struct stmt_list_hash | |
630 | { | |
631 | /* The DWO unit this table is from or NULL if there is none. */ | |
632 | struct dwo_unit *dwo_unit; | |
633 | ||
634 | /* Offset in .debug_line or .debug_line.dwo. */ | |
635 | sect_offset line_offset; | |
636 | }; | |
637 | ||
f4dc4d17 DE |
638 | /* Each element of dwarf2_per_objfile->type_unit_groups is a pointer to |
639 | an object of this type. */ | |
640 | ||
641 | struct type_unit_group | |
642 | { | |
643 | /* dwarf2read.c's main "handle" on the symtab. | |
644 | To simplify things we create an artificial CU that "includes" all the | |
645 | type units using this stmt_list so that the rest of the code still has | |
646 | a "per_cu" handle on the symtab. | |
647 | This PER_CU is recognized by having no section. */ | |
8a0459fd | 648 | #define IS_TYPE_UNIT_GROUP(per_cu) ((per_cu)->section == NULL) |
094b34ac DE |
649 | struct dwarf2_per_cu_data per_cu; |
650 | ||
651 | union | |
652 | { | |
653 | /* The TUs that share this DW_AT_stmt_list entry. | |
654 | This is added to while parsing type units to build partial symtabs, | |
655 | and is deleted afterwards and not used again. */ | |
656 | VEC (dwarf2_per_cu_ptr) *tus; | |
f4dc4d17 | 657 | |
094b34ac DE |
658 | /* When reading the line table in "quick" functions, we need a real TU. |
659 | Any will do, we know they all share the same DW_AT_stmt_list entry. | |
660 | For simplicity's sake, we pick the first one. */ | |
661 | struct dwarf2_per_cu_data *first_tu; | |
662 | } t; | |
f4dc4d17 DE |
663 | |
664 | /* The primary symtab. | |
094b34ac DE |
665 | Type units in a group needn't all be defined in the same source file, |
666 | so we create an essentially anonymous symtab as the primary symtab. */ | |
f4dc4d17 DE |
667 | struct symtab *primary_symtab; |
668 | ||
094b34ac DE |
669 | /* The data used to construct the hash key. */ |
670 | struct stmt_list_hash hash; | |
f4dc4d17 DE |
671 | |
672 | /* The number of symtabs from the line header. | |
673 | The value here must match line_header.num_file_names. */ | |
674 | unsigned int num_symtabs; | |
675 | ||
676 | /* The symbol tables for this TU (obtained from the files listed in | |
677 | DW_AT_stmt_list). | |
678 | WARNING: The order of entries here must match the order of entries | |
679 | in the line header. After the first TU using this type_unit_group, the | |
680 | line header for the subsequent TUs is recreated from this. This is done | |
681 | because we need to use the same symtabs for each TU using the same | |
682 | DW_AT_stmt_list value. Also note that symtabs may be repeated here, | |
683 | there's no guarantee the line header doesn't have duplicate entries. */ | |
684 | struct symtab **symtabs; | |
685 | }; | |
686 | ||
80626a55 | 687 | /* These sections are what may appear in a DWO file. */ |
3019eac3 DE |
688 | |
689 | struct dwo_sections | |
690 | { | |
691 | struct dwarf2_section_info abbrev; | |
3019eac3 DE |
692 | struct dwarf2_section_info line; |
693 | struct dwarf2_section_info loc; | |
09262596 DE |
694 | struct dwarf2_section_info macinfo; |
695 | struct dwarf2_section_info macro; | |
3019eac3 DE |
696 | struct dwarf2_section_info str; |
697 | struct dwarf2_section_info str_offsets; | |
80626a55 DE |
698 | /* In the case of a virtual DWO file, these two are unused. */ |
699 | struct dwarf2_section_info info; | |
3019eac3 DE |
700 | VEC (dwarf2_section_info_def) *types; |
701 | }; | |
702 | ||
703 | /* Common bits of DWO CUs/TUs. */ | |
704 | ||
705 | struct dwo_unit | |
706 | { | |
707 | /* Backlink to the containing struct dwo_file. */ | |
708 | struct dwo_file *dwo_file; | |
709 | ||
710 | /* The "id" that distinguishes this CU/TU. | |
711 | .debug_info calls this "dwo_id", .debug_types calls this "signature". | |
712 | Since signatures came first, we stick with it for consistency. */ | |
713 | ULONGEST signature; | |
714 | ||
715 | /* The section this CU/TU lives in, in the DWO file. */ | |
8a0459fd | 716 | struct dwarf2_section_info *section; |
3019eac3 DE |
717 | |
718 | /* Same as dwarf2_per_cu_data:{offset,length} but for the DWO section. */ | |
719 | sect_offset offset; | |
720 | unsigned int length; | |
721 | ||
722 | /* For types, offset in the type's DIE of the type defined by this TU. */ | |
723 | cu_offset type_offset_in_tu; | |
724 | }; | |
725 | ||
80626a55 DE |
726 | /* Data for one DWO file. |
727 | This includes virtual DWO files that have been packaged into a | |
728 | DWP file. */ | |
3019eac3 DE |
729 | |
730 | struct dwo_file | |
731 | { | |
80626a55 DE |
732 | /* The DW_AT_GNU_dwo_name attribute. This is the hash key. |
733 | For virtual DWO files the name is constructed from the section offsets | |
734 | of abbrev,line,loc,str_offsets so that we combine virtual DWO files | |
735 | from related CU+TUs. */ | |
736 | const char *name; | |
3019eac3 | 737 | |
80626a55 DE |
738 | /* The bfd, when the file is open. Otherwise this is NULL. |
739 | This is unused(NULL) for virtual DWO files where we use dwp_file.dbfd. */ | |
740 | bfd *dbfd; | |
3019eac3 DE |
741 | |
742 | /* Section info for this file. */ | |
743 | struct dwo_sections sections; | |
744 | ||
745 | /* Table of CUs in the file. | |
746 | Each element is a struct dwo_unit. */ | |
747 | htab_t cus; | |
748 | ||
749 | /* Table of TUs in the file. | |
750 | Each element is a struct dwo_unit. */ | |
751 | htab_t tus; | |
752 | }; | |
753 | ||
80626a55 DE |
754 | /* These sections are what may appear in a DWP file. */ |
755 | ||
756 | struct dwp_sections | |
757 | { | |
758 | struct dwarf2_section_info str; | |
759 | struct dwarf2_section_info cu_index; | |
760 | struct dwarf2_section_info tu_index; | |
761 | /* The .debug_info.dwo, .debug_types.dwo, and other sections are referenced | |
762 | by section number. We don't need to record them here. */ | |
763 | }; | |
764 | ||
765 | /* These sections are what may appear in a virtual DWO file. */ | |
766 | ||
767 | struct virtual_dwo_sections | |
768 | { | |
769 | struct dwarf2_section_info abbrev; | |
770 | struct dwarf2_section_info line; | |
771 | struct dwarf2_section_info loc; | |
772 | struct dwarf2_section_info macinfo; | |
773 | struct dwarf2_section_info macro; | |
774 | struct dwarf2_section_info str_offsets; | |
775 | /* Each DWP hash table entry records one CU or one TU. | |
8a0459fd | 776 | That is recorded here, and copied to dwo_unit.section. */ |
80626a55 DE |
777 | struct dwarf2_section_info info_or_types; |
778 | }; | |
779 | ||
780 | /* Contents of DWP hash tables. */ | |
781 | ||
782 | struct dwp_hash_table | |
783 | { | |
784 | uint32_t nr_units, nr_slots; | |
785 | const gdb_byte *hash_table, *unit_table, *section_pool; | |
786 | }; | |
787 | ||
788 | /* Data for one DWP file. */ | |
789 | ||
790 | struct dwp_file | |
791 | { | |
792 | /* Name of the file. */ | |
793 | const char *name; | |
794 | ||
795 | /* The bfd, when the file is open. Otherwise this is NULL. */ | |
796 | bfd *dbfd; | |
797 | ||
798 | /* Section info for this file. */ | |
799 | struct dwp_sections sections; | |
800 | ||
801 | /* Table of CUs in the file. */ | |
802 | const struct dwp_hash_table *cus; | |
803 | ||
804 | /* Table of TUs in the file. */ | |
805 | const struct dwp_hash_table *tus; | |
806 | ||
807 | /* Table of loaded CUs/TUs. Each entry is a struct dwo_unit *. */ | |
808 | htab_t loaded_cutus; | |
809 | ||
810 | /* Table to map ELF section numbers to their sections. */ | |
811 | unsigned int num_sections; | |
812 | asection **elf_sections; | |
813 | }; | |
814 | ||
36586728 TT |
815 | /* This represents a '.dwz' file. */ |
816 | ||
817 | struct dwz_file | |
818 | { | |
819 | /* A dwz file can only contain a few sections. */ | |
820 | struct dwarf2_section_info abbrev; | |
821 | struct dwarf2_section_info info; | |
822 | struct dwarf2_section_info str; | |
823 | struct dwarf2_section_info line; | |
824 | struct dwarf2_section_info macro; | |
2ec9a5e0 | 825 | struct dwarf2_section_info gdb_index; |
36586728 TT |
826 | |
827 | /* The dwz's BFD. */ | |
828 | bfd *dwz_bfd; | |
829 | }; | |
830 | ||
0963b4bd MS |
831 | /* Struct used to pass misc. parameters to read_die_and_children, et |
832 | al. which are used for both .debug_info and .debug_types dies. | |
833 | All parameters here are unchanging for the life of the call. This | |
dee91e82 | 834 | struct exists to abstract away the constant parameters of die reading. */ |
93311388 DE |
835 | |
836 | struct die_reader_specs | |
837 | { | |
dee91e82 | 838 | /* die_section->asection->owner. */ |
93311388 DE |
839 | bfd* abfd; |
840 | ||
841 | /* The CU of the DIE we are parsing. */ | |
842 | struct dwarf2_cu *cu; | |
843 | ||
80626a55 | 844 | /* Non-NULL if reading a DWO file (including one packaged into a DWP). */ |
3019eac3 DE |
845 | struct dwo_file *dwo_file; |
846 | ||
dee91e82 | 847 | /* The section the die comes from. |
3019eac3 | 848 | This is either .debug_info or .debug_types, or the .dwo variants. */ |
dee91e82 DE |
849 | struct dwarf2_section_info *die_section; |
850 | ||
851 | /* die_section->buffer. */ | |
852 | gdb_byte *buffer; | |
f664829e DE |
853 | |
854 | /* The end of the buffer. */ | |
855 | const gdb_byte *buffer_end; | |
93311388 DE |
856 | }; |
857 | ||
fd820528 | 858 | /* Type of function passed to init_cutu_and_read_dies, et.al. */ |
dee91e82 DE |
859 | typedef void (die_reader_func_ftype) (const struct die_reader_specs *reader, |
860 | gdb_byte *info_ptr, | |
861 | struct die_info *comp_unit_die, | |
862 | int has_children, | |
863 | void *data); | |
864 | ||
debd256d JB |
865 | /* The line number information for a compilation unit (found in the |
866 | .debug_line section) begins with a "statement program header", | |
867 | which contains the following information. */ | |
868 | struct line_header | |
869 | { | |
870 | unsigned int total_length; | |
871 | unsigned short version; | |
872 | unsigned int header_length; | |
873 | unsigned char minimum_instruction_length; | |
2dc7f7b3 | 874 | unsigned char maximum_ops_per_instruction; |
debd256d JB |
875 | unsigned char default_is_stmt; |
876 | int line_base; | |
877 | unsigned char line_range; | |
878 | unsigned char opcode_base; | |
879 | ||
880 | /* standard_opcode_lengths[i] is the number of operands for the | |
881 | standard opcode whose value is i. This means that | |
882 | standard_opcode_lengths[0] is unused, and the last meaningful | |
883 | element is standard_opcode_lengths[opcode_base - 1]. */ | |
884 | unsigned char *standard_opcode_lengths; | |
885 | ||
886 | /* The include_directories table. NOTE! These strings are not | |
887 | allocated with xmalloc; instead, they are pointers into | |
888 | debug_line_buffer. If you try to free them, `free' will get | |
889 | indigestion. */ | |
890 | unsigned int num_include_dirs, include_dirs_size; | |
891 | char **include_dirs; | |
892 | ||
893 | /* The file_names table. NOTE! These strings are not allocated | |
894 | with xmalloc; instead, they are pointers into debug_line_buffer. | |
895 | Don't try to free them directly. */ | |
896 | unsigned int num_file_names, file_names_size; | |
897 | struct file_entry | |
c906108c | 898 | { |
debd256d JB |
899 | char *name; |
900 | unsigned int dir_index; | |
901 | unsigned int mod_time; | |
902 | unsigned int length; | |
aaa75496 | 903 | int included_p; /* Non-zero if referenced by the Line Number Program. */ |
cb1df416 | 904 | struct symtab *symtab; /* The associated symbol table, if any. */ |
debd256d JB |
905 | } *file_names; |
906 | ||
907 | /* The start and end of the statement program following this | |
6502dd73 | 908 | header. These point into dwarf2_per_objfile->line_buffer. */ |
fe1b8b76 | 909 | gdb_byte *statement_program_start, *statement_program_end; |
debd256d | 910 | }; |
c906108c SS |
911 | |
912 | /* When we construct a partial symbol table entry we only | |
0963b4bd | 913 | need this much information. */ |
c906108c SS |
914 | struct partial_die_info |
915 | { | |
72bf9492 | 916 | /* Offset of this DIE. */ |
b64f50a1 | 917 | sect_offset offset; |
72bf9492 DJ |
918 | |
919 | /* DWARF-2 tag for this DIE. */ | |
920 | ENUM_BITFIELD(dwarf_tag) tag : 16; | |
921 | ||
72bf9492 DJ |
922 | /* Assorted flags describing the data found in this DIE. */ |
923 | unsigned int has_children : 1; | |
924 | unsigned int is_external : 1; | |
925 | unsigned int is_declaration : 1; | |
926 | unsigned int has_type : 1; | |
927 | unsigned int has_specification : 1; | |
928 | unsigned int has_pc_info : 1; | |
481860b3 | 929 | unsigned int may_be_inlined : 1; |
72bf9492 DJ |
930 | |
931 | /* Flag set if the SCOPE field of this structure has been | |
932 | computed. */ | |
933 | unsigned int scope_set : 1; | |
934 | ||
fa4028e9 JB |
935 | /* Flag set if the DIE has a byte_size attribute. */ |
936 | unsigned int has_byte_size : 1; | |
937 | ||
98bfdba5 PA |
938 | /* Flag set if any of the DIE's children are template arguments. */ |
939 | unsigned int has_template_arguments : 1; | |
940 | ||
abc72ce4 DE |
941 | /* Flag set if fixup_partial_die has been called on this die. */ |
942 | unsigned int fixup_called : 1; | |
943 | ||
36586728 TT |
944 | /* Flag set if DW_TAG_imported_unit uses DW_FORM_GNU_ref_alt. */ |
945 | unsigned int is_dwz : 1; | |
946 | ||
947 | /* Flag set if spec_offset uses DW_FORM_GNU_ref_alt. */ | |
948 | unsigned int spec_is_dwz : 1; | |
949 | ||
72bf9492 | 950 | /* The name of this DIE. Normally the value of DW_AT_name, but |
94af9270 | 951 | sometimes a default name for unnamed DIEs. */ |
15d034d0 | 952 | const char *name; |
72bf9492 | 953 | |
abc72ce4 DE |
954 | /* The linkage name, if present. */ |
955 | const char *linkage_name; | |
956 | ||
72bf9492 DJ |
957 | /* The scope to prepend to our children. This is generally |
958 | allocated on the comp_unit_obstack, so will disappear | |
959 | when this compilation unit leaves the cache. */ | |
15d034d0 | 960 | const char *scope; |
72bf9492 | 961 | |
95554aad TT |
962 | /* Some data associated with the partial DIE. The tag determines |
963 | which field is live. */ | |
964 | union | |
965 | { | |
966 | /* The location description associated with this DIE, if any. */ | |
967 | struct dwarf_block *locdesc; | |
968 | /* The offset of an import, for DW_TAG_imported_unit. */ | |
969 | sect_offset offset; | |
970 | } d; | |
72bf9492 DJ |
971 | |
972 | /* If HAS_PC_INFO, the PC range associated with this DIE. */ | |
c906108c SS |
973 | CORE_ADDR lowpc; |
974 | CORE_ADDR highpc; | |
72bf9492 | 975 | |
93311388 | 976 | /* Pointer into the info_buffer (or types_buffer) pointing at the target of |
72bf9492 | 977 | DW_AT_sibling, if any. */ |
abc72ce4 DE |
978 | /* NOTE: This member isn't strictly necessary, read_partial_die could |
979 | return DW_AT_sibling values to its caller load_partial_dies. */ | |
fe1b8b76 | 980 | gdb_byte *sibling; |
72bf9492 DJ |
981 | |
982 | /* If HAS_SPECIFICATION, the offset of the DIE referred to by | |
983 | DW_AT_specification (or DW_AT_abstract_origin or | |
984 | DW_AT_extension). */ | |
b64f50a1 | 985 | sect_offset spec_offset; |
72bf9492 DJ |
986 | |
987 | /* Pointers to this DIE's parent, first child, and next sibling, | |
988 | if any. */ | |
989 | struct partial_die_info *die_parent, *die_child, *die_sibling; | |
c906108c SS |
990 | }; |
991 | ||
0963b4bd | 992 | /* This data structure holds the information of an abbrev. */ |
c906108c SS |
993 | struct abbrev_info |
994 | { | |
995 | unsigned int number; /* number identifying abbrev */ | |
996 | enum dwarf_tag tag; /* dwarf tag */ | |
f3dd6933 DJ |
997 | unsigned short has_children; /* boolean */ |
998 | unsigned short num_attrs; /* number of attributes */ | |
c906108c SS |
999 | struct attr_abbrev *attrs; /* an array of attribute descriptions */ |
1000 | struct abbrev_info *next; /* next in chain */ | |
1001 | }; | |
1002 | ||
1003 | struct attr_abbrev | |
1004 | { | |
9d25dd43 DE |
1005 | ENUM_BITFIELD(dwarf_attribute) name : 16; |
1006 | ENUM_BITFIELD(dwarf_form) form : 16; | |
c906108c SS |
1007 | }; |
1008 | ||
433df2d4 DE |
1009 | /* Size of abbrev_table.abbrev_hash_table. */ |
1010 | #define ABBREV_HASH_SIZE 121 | |
1011 | ||
1012 | /* Top level data structure to contain an abbreviation table. */ | |
1013 | ||
1014 | struct abbrev_table | |
1015 | { | |
f4dc4d17 DE |
1016 | /* Where the abbrev table came from. |
1017 | This is used as a sanity check when the table is used. */ | |
433df2d4 DE |
1018 | sect_offset offset; |
1019 | ||
1020 | /* Storage for the abbrev table. */ | |
1021 | struct obstack abbrev_obstack; | |
1022 | ||
1023 | /* Hash table of abbrevs. | |
1024 | This is an array of size ABBREV_HASH_SIZE allocated in abbrev_obstack. | |
1025 | It could be statically allocated, but the previous code didn't so we | |
1026 | don't either. */ | |
1027 | struct abbrev_info **abbrevs; | |
1028 | }; | |
1029 | ||
0963b4bd | 1030 | /* Attributes have a name and a value. */ |
b60c80d6 DJ |
1031 | struct attribute |
1032 | { | |
9d25dd43 | 1033 | ENUM_BITFIELD(dwarf_attribute) name : 16; |
8285870a JK |
1034 | ENUM_BITFIELD(dwarf_form) form : 15; |
1035 | ||
1036 | /* Has DW_STRING already been updated by dwarf2_canonicalize_name? This | |
1037 | field should be in u.str (existing only for DW_STRING) but it is kept | |
1038 | here for better struct attribute alignment. */ | |
1039 | unsigned int string_is_canonical : 1; | |
1040 | ||
b60c80d6 DJ |
1041 | union |
1042 | { | |
15d034d0 | 1043 | const char *str; |
b60c80d6 | 1044 | struct dwarf_block *blk; |
43bbcdc2 PH |
1045 | ULONGEST unsnd; |
1046 | LONGEST snd; | |
b60c80d6 | 1047 | CORE_ADDR addr; |
348e048f | 1048 | struct signatured_type *signatured_type; |
b60c80d6 DJ |
1049 | } |
1050 | u; | |
1051 | }; | |
1052 | ||
0963b4bd | 1053 | /* This data structure holds a complete die structure. */ |
c906108c SS |
1054 | struct die_info |
1055 | { | |
76815b17 DE |
1056 | /* DWARF-2 tag for this DIE. */ |
1057 | ENUM_BITFIELD(dwarf_tag) tag : 16; | |
1058 | ||
1059 | /* Number of attributes */ | |
98bfdba5 PA |
1060 | unsigned char num_attrs; |
1061 | ||
1062 | /* True if we're presently building the full type name for the | |
1063 | type derived from this DIE. */ | |
1064 | unsigned char building_fullname : 1; | |
76815b17 DE |
1065 | |
1066 | /* Abbrev number */ | |
1067 | unsigned int abbrev; | |
1068 | ||
93311388 | 1069 | /* Offset in .debug_info or .debug_types section. */ |
b64f50a1 | 1070 | sect_offset offset; |
78ba4af6 JB |
1071 | |
1072 | /* The dies in a compilation unit form an n-ary tree. PARENT | |
1073 | points to this die's parent; CHILD points to the first child of | |
1074 | this node; and all the children of a given node are chained | |
4950bc1c | 1075 | together via their SIBLING fields. */ |
639d11d3 DC |
1076 | struct die_info *child; /* Its first child, if any. */ |
1077 | struct die_info *sibling; /* Its next sibling, if any. */ | |
1078 | struct die_info *parent; /* Its parent, if any. */ | |
c906108c | 1079 | |
b60c80d6 DJ |
1080 | /* An array of attributes, with NUM_ATTRS elements. There may be |
1081 | zero, but it's not common and zero-sized arrays are not | |
1082 | sufficiently portable C. */ | |
1083 | struct attribute attrs[1]; | |
c906108c SS |
1084 | }; |
1085 | ||
0963b4bd | 1086 | /* Get at parts of an attribute structure. */ |
c906108c SS |
1087 | |
1088 | #define DW_STRING(attr) ((attr)->u.str) | |
8285870a | 1089 | #define DW_STRING_IS_CANONICAL(attr) ((attr)->string_is_canonical) |
c906108c SS |
1090 | #define DW_UNSND(attr) ((attr)->u.unsnd) |
1091 | #define DW_BLOCK(attr) ((attr)->u.blk) | |
1092 | #define DW_SND(attr) ((attr)->u.snd) | |
1093 | #define DW_ADDR(attr) ((attr)->u.addr) | |
348e048f | 1094 | #define DW_SIGNATURED_TYPE(attr) ((attr)->u.signatured_type) |
c906108c | 1095 | |
0963b4bd | 1096 | /* Blocks are a bunch of untyped bytes. */ |
c906108c SS |
1097 | struct dwarf_block |
1098 | { | |
56eb65bd | 1099 | size_t size; |
1d6edc3c JK |
1100 | |
1101 | /* Valid only if SIZE is not zero. */ | |
fe1b8b76 | 1102 | gdb_byte *data; |
c906108c SS |
1103 | }; |
1104 | ||
c906108c SS |
1105 | #ifndef ATTR_ALLOC_CHUNK |
1106 | #define ATTR_ALLOC_CHUNK 4 | |
1107 | #endif | |
1108 | ||
c906108c SS |
1109 | /* Allocate fields for structs, unions and enums in this size. */ |
1110 | #ifndef DW_FIELD_ALLOC_CHUNK | |
1111 | #define DW_FIELD_ALLOC_CHUNK 4 | |
1112 | #endif | |
1113 | ||
c906108c SS |
1114 | /* FIXME: We might want to set this from BFD via bfd_arch_bits_per_byte, |
1115 | but this would require a corresponding change in unpack_field_as_long | |
1116 | and friends. */ | |
1117 | static int bits_per_byte = 8; | |
1118 | ||
1119 | /* The routines that read and process dies for a C struct or C++ class | |
1120 | pass lists of data member fields and lists of member function fields | |
1121 | in an instance of a field_info structure, as defined below. */ | |
1122 | struct field_info | |
c5aa993b | 1123 | { |
0963b4bd | 1124 | /* List of data member and baseclasses fields. */ |
c5aa993b JM |
1125 | struct nextfield |
1126 | { | |
1127 | struct nextfield *next; | |
1128 | int accessibility; | |
1129 | int virtuality; | |
1130 | struct field field; | |
1131 | } | |
7d0ccb61 | 1132 | *fields, *baseclasses; |
c906108c | 1133 | |
7d0ccb61 | 1134 | /* Number of fields (including baseclasses). */ |
c5aa993b | 1135 | int nfields; |
c906108c | 1136 | |
c5aa993b JM |
1137 | /* Number of baseclasses. */ |
1138 | int nbaseclasses; | |
c906108c | 1139 | |
c5aa993b JM |
1140 | /* Set if the accesibility of one of the fields is not public. */ |
1141 | int non_public_fields; | |
c906108c | 1142 | |
c5aa993b JM |
1143 | /* Member function fields array, entries are allocated in the order they |
1144 | are encountered in the object file. */ | |
1145 | struct nextfnfield | |
1146 | { | |
1147 | struct nextfnfield *next; | |
1148 | struct fn_field fnfield; | |
1149 | } | |
1150 | *fnfields; | |
c906108c | 1151 | |
c5aa993b JM |
1152 | /* Member function fieldlist array, contains name of possibly overloaded |
1153 | member function, number of overloaded member functions and a pointer | |
1154 | to the head of the member function field chain. */ | |
1155 | struct fnfieldlist | |
1156 | { | |
15d034d0 | 1157 | const char *name; |
c5aa993b JM |
1158 | int length; |
1159 | struct nextfnfield *head; | |
1160 | } | |
1161 | *fnfieldlists; | |
c906108c | 1162 | |
c5aa993b JM |
1163 | /* Number of entries in the fnfieldlists array. */ |
1164 | int nfnfields; | |
98751a41 JK |
1165 | |
1166 | /* typedefs defined inside this class. TYPEDEF_FIELD_LIST contains head of | |
1167 | a NULL terminated list of TYPEDEF_FIELD_LIST_COUNT elements. */ | |
1168 | struct typedef_field_list | |
1169 | { | |
1170 | struct typedef_field field; | |
1171 | struct typedef_field_list *next; | |
1172 | } | |
1173 | *typedef_field_list; | |
1174 | unsigned typedef_field_list_count; | |
c5aa993b | 1175 | }; |
c906108c | 1176 | |
10b3939b DJ |
1177 | /* One item on the queue of compilation units to read in full symbols |
1178 | for. */ | |
1179 | struct dwarf2_queue_item | |
1180 | { | |
1181 | struct dwarf2_per_cu_data *per_cu; | |
95554aad | 1182 | enum language pretend_language; |
10b3939b DJ |
1183 | struct dwarf2_queue_item *next; |
1184 | }; | |
1185 | ||
1186 | /* The current queue. */ | |
1187 | static struct dwarf2_queue_item *dwarf2_queue, *dwarf2_queue_tail; | |
1188 | ||
ae038cb0 DJ |
1189 | /* Loaded secondary compilation units are kept in memory until they |
1190 | have not been referenced for the processing of this many | |
1191 | compilation units. Set this to zero to disable caching. Cache | |
1192 | sizes of up to at least twenty will improve startup time for | |
1193 | typical inter-CU-reference binaries, at an obvious memory cost. */ | |
1194 | static int dwarf2_max_cache_age = 5; | |
920d2a44 AC |
1195 | static void |
1196 | show_dwarf2_max_cache_age (struct ui_file *file, int from_tty, | |
1197 | struct cmd_list_element *c, const char *value) | |
1198 | { | |
3e43a32a MS |
1199 | fprintf_filtered (file, _("The upper bound on the age of cached " |
1200 | "dwarf2 compilation units is %s.\n"), | |
920d2a44 AC |
1201 | value); |
1202 | } | |
1203 | ||
ae038cb0 | 1204 | |
0963b4bd | 1205 | /* Various complaints about symbol reading that don't abort the process. */ |
c906108c | 1206 | |
4d3c2250 KB |
1207 | static void |
1208 | dwarf2_statement_list_fits_in_line_number_section_complaint (void) | |
2e276125 | 1209 | { |
4d3c2250 | 1210 | complaint (&symfile_complaints, |
e2e0b3e5 | 1211 | _("statement list doesn't fit in .debug_line section")); |
4d3c2250 KB |
1212 | } |
1213 | ||
25e43795 DJ |
1214 | static void |
1215 | dwarf2_debug_line_missing_file_complaint (void) | |
1216 | { | |
1217 | complaint (&symfile_complaints, | |
1218 | _(".debug_line section has line data without a file")); | |
1219 | } | |
1220 | ||
59205f5a JB |
1221 | static void |
1222 | dwarf2_debug_line_missing_end_sequence_complaint (void) | |
1223 | { | |
1224 | complaint (&symfile_complaints, | |
3e43a32a MS |
1225 | _(".debug_line section has line " |
1226 | "program sequence without an end")); | |
59205f5a JB |
1227 | } |
1228 | ||
4d3c2250 KB |
1229 | static void |
1230 | dwarf2_complex_location_expr_complaint (void) | |
2e276125 | 1231 | { |
e2e0b3e5 | 1232 | complaint (&symfile_complaints, _("location expression too complex")); |
4d3c2250 KB |
1233 | } |
1234 | ||
4d3c2250 KB |
1235 | static void |
1236 | dwarf2_const_value_length_mismatch_complaint (const char *arg1, int arg2, | |
1237 | int arg3) | |
2e276125 | 1238 | { |
4d3c2250 | 1239 | complaint (&symfile_complaints, |
3e43a32a MS |
1240 | _("const value length mismatch for '%s', got %d, expected %d"), |
1241 | arg1, arg2, arg3); | |
4d3c2250 KB |
1242 | } |
1243 | ||
1244 | static void | |
f664829e | 1245 | dwarf2_section_buffer_overflow_complaint (struct dwarf2_section_info *section) |
2e276125 | 1246 | { |
4d3c2250 | 1247 | complaint (&symfile_complaints, |
f664829e DE |
1248 | _("debug info runs off end of %s section" |
1249 | " [in module %s]"), | |
1250 | section->asection->name, | |
1251 | bfd_get_filename (section->asection->owner)); | |
4d3c2250 KB |
1252 | } |
1253 | ||
1254 | static void | |
1255 | dwarf2_macro_malformed_definition_complaint (const char *arg1) | |
8e19ed76 | 1256 | { |
4d3c2250 | 1257 | complaint (&symfile_complaints, |
3e43a32a MS |
1258 | _("macro debug info contains a " |
1259 | "malformed macro definition:\n`%s'"), | |
4d3c2250 KB |
1260 | arg1); |
1261 | } | |
1262 | ||
1263 | static void | |
1264 | dwarf2_invalid_attrib_class_complaint (const char *arg1, const char *arg2) | |
8b2dbe47 | 1265 | { |
4d3c2250 | 1266 | complaint (&symfile_complaints, |
3e43a32a MS |
1267 | _("invalid attribute class or form for '%s' in '%s'"), |
1268 | arg1, arg2); | |
4d3c2250 | 1269 | } |
c906108c | 1270 | |
c906108c SS |
1271 | /* local function prototypes */ |
1272 | ||
4efb68b1 | 1273 | static void dwarf2_locate_sections (bfd *, asection *, void *); |
c906108c | 1274 | |
aaa75496 JB |
1275 | static void dwarf2_create_include_psymtab (char *, struct partial_symtab *, |
1276 | struct objfile *); | |
1277 | ||
918dd910 JK |
1278 | static void dwarf2_find_base_address (struct die_info *die, |
1279 | struct dwarf2_cu *cu); | |
1280 | ||
0018ea6f DE |
1281 | static struct partial_symtab *create_partial_symtab |
1282 | (struct dwarf2_per_cu_data *per_cu, const char *name); | |
1283 | ||
c67a9c90 | 1284 | static void dwarf2_build_psymtabs_hard (struct objfile *); |
c906108c | 1285 | |
72bf9492 DJ |
1286 | static void scan_partial_symbols (struct partial_die_info *, |
1287 | CORE_ADDR *, CORE_ADDR *, | |
5734ee8b | 1288 | int, struct dwarf2_cu *); |
c906108c | 1289 | |
72bf9492 DJ |
1290 | static void add_partial_symbol (struct partial_die_info *, |
1291 | struct dwarf2_cu *); | |
63d06c5c | 1292 | |
72bf9492 DJ |
1293 | static void add_partial_namespace (struct partial_die_info *pdi, |
1294 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 1295 | int need_pc, struct dwarf2_cu *cu); |
63d06c5c | 1296 | |
5d7cb8df JK |
1297 | static void add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, |
1298 | CORE_ADDR *highpc, int need_pc, | |
1299 | struct dwarf2_cu *cu); | |
1300 | ||
72bf9492 DJ |
1301 | static void add_partial_enumeration (struct partial_die_info *enum_pdi, |
1302 | struct dwarf2_cu *cu); | |
91c24f0a | 1303 | |
bc30ff58 JB |
1304 | static void add_partial_subprogram (struct partial_die_info *pdi, |
1305 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 1306 | int need_pc, struct dwarf2_cu *cu); |
bc30ff58 | 1307 | |
257e7a09 YQ |
1308 | static void dwarf2_read_symtab (struct partial_symtab *, |
1309 | struct objfile *); | |
c906108c | 1310 | |
a14ed312 | 1311 | static void psymtab_to_symtab_1 (struct partial_symtab *); |
c906108c | 1312 | |
433df2d4 DE |
1313 | static struct abbrev_info *abbrev_table_lookup_abbrev |
1314 | (const struct abbrev_table *, unsigned int); | |
1315 | ||
1316 | static struct abbrev_table *abbrev_table_read_table | |
1317 | (struct dwarf2_section_info *, sect_offset); | |
1318 | ||
1319 | static void abbrev_table_free (struct abbrev_table *); | |
1320 | ||
f4dc4d17 DE |
1321 | static void abbrev_table_free_cleanup (void *); |
1322 | ||
dee91e82 DE |
1323 | static void dwarf2_read_abbrevs (struct dwarf2_cu *, |
1324 | struct dwarf2_section_info *); | |
c906108c | 1325 | |
f3dd6933 | 1326 | static void dwarf2_free_abbrev_table (void *); |
c906108c | 1327 | |
6caca83c CC |
1328 | static unsigned int peek_abbrev_code (bfd *, gdb_byte *); |
1329 | ||
dee91e82 DE |
1330 | static struct partial_die_info *load_partial_dies |
1331 | (const struct die_reader_specs *, gdb_byte *, int); | |
72bf9492 | 1332 | |
dee91e82 DE |
1333 | static gdb_byte *read_partial_die (const struct die_reader_specs *, |
1334 | struct partial_die_info *, | |
1335 | struct abbrev_info *, | |
1336 | unsigned int, | |
1337 | gdb_byte *); | |
c906108c | 1338 | |
36586728 | 1339 | static struct partial_die_info *find_partial_die (sect_offset, int, |
10b3939b | 1340 | struct dwarf2_cu *); |
72bf9492 DJ |
1341 | |
1342 | static void fixup_partial_die (struct partial_die_info *, | |
1343 | struct dwarf2_cu *); | |
1344 | ||
dee91e82 DE |
1345 | static gdb_byte *read_attribute (const struct die_reader_specs *, |
1346 | struct attribute *, struct attr_abbrev *, | |
1347 | gdb_byte *); | |
a8329558 | 1348 | |
a1855c1d | 1349 | static unsigned int read_1_byte (bfd *, const gdb_byte *); |
c906108c | 1350 | |
a1855c1d | 1351 | static int read_1_signed_byte (bfd *, const gdb_byte *); |
c906108c | 1352 | |
a1855c1d | 1353 | static unsigned int read_2_bytes (bfd *, const gdb_byte *); |
c906108c | 1354 | |
a1855c1d | 1355 | static unsigned int read_4_bytes (bfd *, const gdb_byte *); |
c906108c | 1356 | |
a1855c1d | 1357 | static ULONGEST read_8_bytes (bfd *, const gdb_byte *); |
c906108c | 1358 | |
fe1b8b76 | 1359 | static CORE_ADDR read_address (bfd *, gdb_byte *ptr, struct dwarf2_cu *, |
891d2f0b | 1360 | unsigned int *); |
c906108c | 1361 | |
c764a876 DE |
1362 | static LONGEST read_initial_length (bfd *, gdb_byte *, unsigned int *); |
1363 | ||
1364 | static LONGEST read_checked_initial_length_and_offset | |
1365 | (bfd *, gdb_byte *, const struct comp_unit_head *, | |
1366 | unsigned int *, unsigned int *); | |
613e1657 | 1367 | |
fe1b8b76 | 1368 | static LONGEST read_offset (bfd *, gdb_byte *, const struct comp_unit_head *, |
c764a876 DE |
1369 | unsigned int *); |
1370 | ||
1371 | static LONGEST read_offset_1 (bfd *, gdb_byte *, unsigned int); | |
613e1657 | 1372 | |
f4dc4d17 DE |
1373 | static sect_offset read_abbrev_offset (struct dwarf2_section_info *, |
1374 | sect_offset); | |
1375 | ||
fe1b8b76 | 1376 | static gdb_byte *read_n_bytes (bfd *, gdb_byte *, unsigned int); |
c906108c | 1377 | |
9b1c24c8 | 1378 | static char *read_direct_string (bfd *, gdb_byte *, unsigned int *); |
c906108c | 1379 | |
fe1b8b76 JB |
1380 | static char *read_indirect_string (bfd *, gdb_byte *, |
1381 | const struct comp_unit_head *, | |
1382 | unsigned int *); | |
4bdf3d34 | 1383 | |
36586728 TT |
1384 | static char *read_indirect_string_from_dwz (struct dwz_file *, LONGEST); |
1385 | ||
12df843f | 1386 | static ULONGEST read_unsigned_leb128 (bfd *, gdb_byte *, unsigned int *); |
c906108c | 1387 | |
12df843f | 1388 | static LONGEST read_signed_leb128 (bfd *, gdb_byte *, unsigned int *); |
c906108c | 1389 | |
3019eac3 DE |
1390 | static CORE_ADDR read_addr_index_from_leb128 (struct dwarf2_cu *, gdb_byte *, |
1391 | unsigned int *); | |
1392 | ||
1393 | static char *read_str_index (const struct die_reader_specs *reader, | |
1394 | struct dwarf2_cu *cu, ULONGEST str_index); | |
1395 | ||
e142c38c | 1396 | static void set_cu_language (unsigned int, struct dwarf2_cu *); |
c906108c | 1397 | |
e142c38c DJ |
1398 | static struct attribute *dwarf2_attr (struct die_info *, unsigned int, |
1399 | struct dwarf2_cu *); | |
c906108c | 1400 | |
348e048f | 1401 | static struct attribute *dwarf2_attr_no_follow (struct die_info *, |
45e58e77 | 1402 | unsigned int); |
348e048f | 1403 | |
05cf31d1 JB |
1404 | static int dwarf2_flag_true_p (struct die_info *die, unsigned name, |
1405 | struct dwarf2_cu *cu); | |
1406 | ||
e142c38c | 1407 | static int die_is_declaration (struct die_info *, struct dwarf2_cu *cu); |
3ca72b44 | 1408 | |
e142c38c | 1409 | static struct die_info *die_specification (struct die_info *die, |
f2f0e013 | 1410 | struct dwarf2_cu **); |
63d06c5c | 1411 | |
debd256d JB |
1412 | static void free_line_header (struct line_header *lh); |
1413 | ||
aaa75496 JB |
1414 | static void add_file_name (struct line_header *, char *, unsigned int, |
1415 | unsigned int, unsigned int); | |
1416 | ||
3019eac3 DE |
1417 | static struct line_header *dwarf_decode_line_header (unsigned int offset, |
1418 | struct dwarf2_cu *cu); | |
debd256d | 1419 | |
f3f5162e DE |
1420 | static void dwarf_decode_lines (struct line_header *, const char *, |
1421 | struct dwarf2_cu *, struct partial_symtab *, | |
1422 | int); | |
c906108c | 1423 | |
72b9f47f | 1424 | static void dwarf2_start_subfile (char *, const char *, const char *); |
c906108c | 1425 | |
f4dc4d17 | 1426 | static void dwarf2_start_symtab (struct dwarf2_cu *, |
15d034d0 | 1427 | const char *, const char *, CORE_ADDR); |
f4dc4d17 | 1428 | |
a14ed312 | 1429 | static struct symbol *new_symbol (struct die_info *, struct type *, |
e7c27a73 | 1430 | struct dwarf2_cu *); |
c906108c | 1431 | |
34eaf542 TT |
1432 | static struct symbol *new_symbol_full (struct die_info *, struct type *, |
1433 | struct dwarf2_cu *, struct symbol *); | |
1434 | ||
a14ed312 | 1435 | static void dwarf2_const_value (struct attribute *, struct symbol *, |
e7c27a73 | 1436 | struct dwarf2_cu *); |
c906108c | 1437 | |
98bfdba5 PA |
1438 | static void dwarf2_const_value_attr (struct attribute *attr, |
1439 | struct type *type, | |
1440 | const char *name, | |
1441 | struct obstack *obstack, | |
12df843f | 1442 | struct dwarf2_cu *cu, LONGEST *value, |
98bfdba5 PA |
1443 | gdb_byte **bytes, |
1444 | struct dwarf2_locexpr_baton **baton); | |
2df3850c | 1445 | |
e7c27a73 | 1446 | static struct type *die_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 1447 | |
b4ba55a1 JB |
1448 | static int need_gnat_info (struct dwarf2_cu *); |
1449 | ||
3e43a32a MS |
1450 | static struct type *die_descriptive_type (struct die_info *, |
1451 | struct dwarf2_cu *); | |
b4ba55a1 JB |
1452 | |
1453 | static void set_descriptive_type (struct type *, struct die_info *, | |
1454 | struct dwarf2_cu *); | |
1455 | ||
e7c27a73 DJ |
1456 | static struct type *die_containing_type (struct die_info *, |
1457 | struct dwarf2_cu *); | |
c906108c | 1458 | |
673bfd45 DE |
1459 | static struct type *lookup_die_type (struct die_info *, struct attribute *, |
1460 | struct dwarf2_cu *); | |
c906108c | 1461 | |
f792889a | 1462 | static struct type *read_type_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1463 | |
673bfd45 DE |
1464 | static struct type *read_type_die_1 (struct die_info *, struct dwarf2_cu *); |
1465 | ||
0d5cff50 | 1466 | static const char *determine_prefix (struct die_info *die, struct dwarf2_cu *); |
63d06c5c | 1467 | |
6e70227d | 1468 | static char *typename_concat (struct obstack *obs, const char *prefix, |
f55ee35c JK |
1469 | const char *suffix, int physname, |
1470 | struct dwarf2_cu *cu); | |
63d06c5c | 1471 | |
e7c27a73 | 1472 | static void read_file_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1473 | |
348e048f DE |
1474 | static void read_type_unit_scope (struct die_info *, struct dwarf2_cu *); |
1475 | ||
e7c27a73 | 1476 | static void read_func_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1477 | |
e7c27a73 | 1478 | static void read_lexical_block_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1479 | |
96408a79 SA |
1480 | static void read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu); |
1481 | ||
ff013f42 JK |
1482 | static int dwarf2_ranges_read (unsigned, CORE_ADDR *, CORE_ADDR *, |
1483 | struct dwarf2_cu *, struct partial_symtab *); | |
1484 | ||
a14ed312 | 1485 | static int dwarf2_get_pc_bounds (struct die_info *, |
d85a05f0 DJ |
1486 | CORE_ADDR *, CORE_ADDR *, struct dwarf2_cu *, |
1487 | struct partial_symtab *); | |
c906108c | 1488 | |
fae299cd DC |
1489 | static void get_scope_pc_bounds (struct die_info *, |
1490 | CORE_ADDR *, CORE_ADDR *, | |
1491 | struct dwarf2_cu *); | |
1492 | ||
801e3a5b JB |
1493 | static void dwarf2_record_block_ranges (struct die_info *, struct block *, |
1494 | CORE_ADDR, struct dwarf2_cu *); | |
1495 | ||
a14ed312 | 1496 | static void dwarf2_add_field (struct field_info *, struct die_info *, |
e7c27a73 | 1497 | struct dwarf2_cu *); |
c906108c | 1498 | |
a14ed312 | 1499 | static void dwarf2_attach_fields_to_type (struct field_info *, |
e7c27a73 | 1500 | struct type *, struct dwarf2_cu *); |
c906108c | 1501 | |
a14ed312 | 1502 | static void dwarf2_add_member_fn (struct field_info *, |
e26fb1d7 | 1503 | struct die_info *, struct type *, |
e7c27a73 | 1504 | struct dwarf2_cu *); |
c906108c | 1505 | |
a14ed312 | 1506 | static void dwarf2_attach_fn_fields_to_type (struct field_info *, |
3e43a32a MS |
1507 | struct type *, |
1508 | struct dwarf2_cu *); | |
c906108c | 1509 | |
134d01f1 | 1510 | static void process_structure_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1511 | |
e7c27a73 | 1512 | static void read_common_block (struct die_info *, struct dwarf2_cu *); |
c906108c | 1513 | |
e7c27a73 | 1514 | static void read_namespace (struct die_info *die, struct dwarf2_cu *); |
d9fa45fe | 1515 | |
5d7cb8df JK |
1516 | static void read_module (struct die_info *die, struct dwarf2_cu *cu); |
1517 | ||
27aa8d6a SW |
1518 | static void read_import_statement (struct die_info *die, struct dwarf2_cu *); |
1519 | ||
f55ee35c JK |
1520 | static struct type *read_module_type (struct die_info *die, |
1521 | struct dwarf2_cu *cu); | |
1522 | ||
38d518c9 | 1523 | static const char *namespace_name (struct die_info *die, |
e142c38c | 1524 | int *is_anonymous, struct dwarf2_cu *); |
38d518c9 | 1525 | |
134d01f1 | 1526 | static void process_enumeration_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1527 | |
e7c27a73 | 1528 | static CORE_ADDR decode_locdesc (struct dwarf_block *, struct dwarf2_cu *); |
c906108c | 1529 | |
6e70227d | 1530 | static enum dwarf_array_dim_ordering read_array_order (struct die_info *, |
7ca2d3a3 DL |
1531 | struct dwarf2_cu *); |
1532 | ||
dee91e82 | 1533 | static struct die_info *read_die_and_children (const struct die_reader_specs *, |
93311388 | 1534 | gdb_byte *info_ptr, |
fe1b8b76 | 1535 | gdb_byte **new_info_ptr, |
639d11d3 DC |
1536 | struct die_info *parent); |
1537 | ||
dee91e82 | 1538 | static struct die_info *read_die_and_siblings (const struct die_reader_specs *, |
93311388 | 1539 | gdb_byte *info_ptr, |
fe1b8b76 | 1540 | gdb_byte **new_info_ptr, |
639d11d3 DC |
1541 | struct die_info *parent); |
1542 | ||
3019eac3 DE |
1543 | static gdb_byte *read_full_die_1 (const struct die_reader_specs *, |
1544 | struct die_info **, gdb_byte *, int *, int); | |
1545 | ||
dee91e82 DE |
1546 | static gdb_byte *read_full_die (const struct die_reader_specs *, |
1547 | struct die_info **, gdb_byte *, int *); | |
93311388 | 1548 | |
e7c27a73 | 1549 | static void process_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1550 | |
15d034d0 TT |
1551 | static const char *dwarf2_canonicalize_name (const char *, struct dwarf2_cu *, |
1552 | struct obstack *); | |
71c25dea | 1553 | |
15d034d0 | 1554 | static const char *dwarf2_name (struct die_info *die, struct dwarf2_cu *); |
9219021c | 1555 | |
15d034d0 | 1556 | static const char *dwarf2_full_name (const char *name, |
98bfdba5 PA |
1557 | struct die_info *die, |
1558 | struct dwarf2_cu *cu); | |
1559 | ||
ca69b9e6 DE |
1560 | static const char *dwarf2_physname (const char *name, struct die_info *die, |
1561 | struct dwarf2_cu *cu); | |
1562 | ||
e142c38c | 1563 | static struct die_info *dwarf2_extension (struct die_info *die, |
f2f0e013 | 1564 | struct dwarf2_cu **); |
9219021c | 1565 | |
f39c6ffd | 1566 | static const char *dwarf_tag_name (unsigned int); |
c906108c | 1567 | |
f39c6ffd | 1568 | static const char *dwarf_attr_name (unsigned int); |
c906108c | 1569 | |
f39c6ffd | 1570 | static const char *dwarf_form_name (unsigned int); |
c906108c | 1571 | |
a14ed312 | 1572 | static char *dwarf_bool_name (unsigned int); |
c906108c | 1573 | |
f39c6ffd | 1574 | static const char *dwarf_type_encoding_name (unsigned int); |
c906108c | 1575 | |
f9aca02d | 1576 | static struct die_info *sibling_die (struct die_info *); |
c906108c | 1577 | |
d97bc12b DE |
1578 | static void dump_die_shallow (struct ui_file *, int indent, struct die_info *); |
1579 | ||
1580 | static void dump_die_for_error (struct die_info *); | |
1581 | ||
1582 | static void dump_die_1 (struct ui_file *, int level, int max_level, | |
1583 | struct die_info *); | |
c906108c | 1584 | |
d97bc12b | 1585 | /*static*/ void dump_die (struct die_info *, int max_level); |
c906108c | 1586 | |
51545339 | 1587 | static void store_in_ref_table (struct die_info *, |
10b3939b | 1588 | struct dwarf2_cu *); |
c906108c | 1589 | |
93311388 DE |
1590 | static int is_ref_attr (struct attribute *); |
1591 | ||
b64f50a1 | 1592 | static sect_offset dwarf2_get_ref_die_offset (struct attribute *); |
c906108c | 1593 | |
43bbcdc2 | 1594 | static LONGEST dwarf2_get_attr_constant_value (struct attribute *, int); |
a02abb62 | 1595 | |
348e048f DE |
1596 | static struct die_info *follow_die_ref_or_sig (struct die_info *, |
1597 | struct attribute *, | |
1598 | struct dwarf2_cu **); | |
1599 | ||
10b3939b DJ |
1600 | static struct die_info *follow_die_ref (struct die_info *, |
1601 | struct attribute *, | |
f2f0e013 | 1602 | struct dwarf2_cu **); |
c906108c | 1603 | |
348e048f DE |
1604 | static struct die_info *follow_die_sig (struct die_info *, |
1605 | struct attribute *, | |
1606 | struct dwarf2_cu **); | |
1607 | ||
6c83ed52 TT |
1608 | static struct signatured_type *lookup_signatured_type_at_offset |
1609 | (struct objfile *objfile, | |
b64f50a1 | 1610 | struct dwarf2_section_info *section, sect_offset offset); |
6c83ed52 | 1611 | |
e5fe5e75 | 1612 | static void load_full_type_unit (struct dwarf2_per_cu_data *per_cu); |
348e048f | 1613 | |
52dc124a | 1614 | static void read_signatured_type (struct signatured_type *); |
348e048f | 1615 | |
f4dc4d17 | 1616 | static struct type_unit_group *get_type_unit_group |
094b34ac | 1617 | (struct dwarf2_cu *, struct attribute *); |
f4dc4d17 DE |
1618 | |
1619 | static void build_type_unit_groups (die_reader_func_ftype *, void *); | |
1620 | ||
c906108c SS |
1621 | /* memory allocation interface */ |
1622 | ||
7b5a2f43 | 1623 | static struct dwarf_block *dwarf_alloc_block (struct dwarf2_cu *); |
c906108c | 1624 | |
b60c80d6 | 1625 | static struct die_info *dwarf_alloc_die (struct dwarf2_cu *, int); |
c906108c | 1626 | |
09262596 | 1627 | static void dwarf_decode_macros (struct dwarf2_cu *, unsigned int, |
15d034d0 | 1628 | const char *, int); |
2e276125 | 1629 | |
8e19ed76 PS |
1630 | static int attr_form_is_block (struct attribute *); |
1631 | ||
3690dd37 JB |
1632 | static int attr_form_is_section_offset (struct attribute *); |
1633 | ||
1634 | static int attr_form_is_constant (struct attribute *); | |
1635 | ||
8cf6f0b1 TT |
1636 | static void fill_in_loclist_baton (struct dwarf2_cu *cu, |
1637 | struct dwarf2_loclist_baton *baton, | |
1638 | struct attribute *attr); | |
1639 | ||
93e7bd98 DJ |
1640 | static void dwarf2_symbol_mark_computed (struct attribute *attr, |
1641 | struct symbol *sym, | |
f1e6e072 TT |
1642 | struct dwarf2_cu *cu, |
1643 | int is_block); | |
4c2df51b | 1644 | |
dee91e82 DE |
1645 | static gdb_byte *skip_one_die (const struct die_reader_specs *reader, |
1646 | gdb_byte *info_ptr, | |
1647 | struct abbrev_info *abbrev); | |
4bb7a0a7 | 1648 | |
72bf9492 DJ |
1649 | static void free_stack_comp_unit (void *); |
1650 | ||
72bf9492 DJ |
1651 | static hashval_t partial_die_hash (const void *item); |
1652 | ||
1653 | static int partial_die_eq (const void *item_lhs, const void *item_rhs); | |
1654 | ||
ae038cb0 | 1655 | static struct dwarf2_per_cu_data *dwarf2_find_containing_comp_unit |
36586728 | 1656 | (sect_offset offset, unsigned int offset_in_dwz, struct objfile *objfile); |
ae038cb0 | 1657 | |
9816fde3 | 1658 | static void init_one_comp_unit (struct dwarf2_cu *cu, |
23745b47 | 1659 | struct dwarf2_per_cu_data *per_cu); |
9816fde3 JK |
1660 | |
1661 | static void prepare_one_comp_unit (struct dwarf2_cu *cu, | |
95554aad TT |
1662 | struct die_info *comp_unit_die, |
1663 | enum language pretend_language); | |
93311388 | 1664 | |
68dc6402 | 1665 | static void free_heap_comp_unit (void *); |
ae038cb0 DJ |
1666 | |
1667 | static void free_cached_comp_units (void *); | |
1668 | ||
1669 | static void age_cached_comp_units (void); | |
1670 | ||
dee91e82 | 1671 | static void free_one_cached_comp_unit (struct dwarf2_per_cu_data *); |
ae038cb0 | 1672 | |
f792889a DJ |
1673 | static struct type *set_die_type (struct die_info *, struct type *, |
1674 | struct dwarf2_cu *); | |
1c379e20 | 1675 | |
ae038cb0 DJ |
1676 | static void create_all_comp_units (struct objfile *); |
1677 | ||
0e50663e | 1678 | static int create_all_type_units (struct objfile *); |
1fd400ff | 1679 | |
95554aad TT |
1680 | static void load_full_comp_unit (struct dwarf2_per_cu_data *, |
1681 | enum language); | |
10b3939b | 1682 | |
95554aad TT |
1683 | static void process_full_comp_unit (struct dwarf2_per_cu_data *, |
1684 | enum language); | |
10b3939b | 1685 | |
f4dc4d17 DE |
1686 | static void process_full_type_unit (struct dwarf2_per_cu_data *, |
1687 | enum language); | |
1688 | ||
10b3939b DJ |
1689 | static void dwarf2_add_dependence (struct dwarf2_cu *, |
1690 | struct dwarf2_per_cu_data *); | |
1691 | ||
ae038cb0 DJ |
1692 | static void dwarf2_mark (struct dwarf2_cu *); |
1693 | ||
1694 | static void dwarf2_clear_marks (struct dwarf2_per_cu_data *); | |
1695 | ||
b64f50a1 | 1696 | static struct type *get_die_type_at_offset (sect_offset, |
673bfd45 DE |
1697 | struct dwarf2_per_cu_data *per_cu); |
1698 | ||
f792889a | 1699 | static struct type *get_die_type (struct die_info *die, struct dwarf2_cu *cu); |
72019c9c | 1700 | |
9291a0cd TT |
1701 | static void dwarf2_release_queue (void *dummy); |
1702 | ||
95554aad TT |
1703 | static void queue_comp_unit (struct dwarf2_per_cu_data *per_cu, |
1704 | enum language pretend_language); | |
1705 | ||
1706 | static int maybe_queue_comp_unit (struct dwarf2_cu *this_cu, | |
1707 | struct dwarf2_per_cu_data *per_cu, | |
1708 | enum language pretend_language); | |
9291a0cd | 1709 | |
a0f42c21 | 1710 | static void process_queue (void); |
9291a0cd TT |
1711 | |
1712 | static void find_file_and_directory (struct die_info *die, | |
1713 | struct dwarf2_cu *cu, | |
15d034d0 | 1714 | const char **name, const char **comp_dir); |
9291a0cd TT |
1715 | |
1716 | static char *file_full_name (int file, struct line_header *lh, | |
1717 | const char *comp_dir); | |
1718 | ||
36586728 TT |
1719 | static gdb_byte *read_and_check_comp_unit_head |
1720 | (struct comp_unit_head *header, | |
1721 | struct dwarf2_section_info *section, | |
1722 | struct dwarf2_section_info *abbrev_section, gdb_byte *info_ptr, | |
1723 | int is_debug_types_section); | |
1724 | ||
fd820528 | 1725 | static void init_cutu_and_read_dies |
f4dc4d17 DE |
1726 | (struct dwarf2_per_cu_data *this_cu, struct abbrev_table *abbrev_table, |
1727 | int use_existing_cu, int keep, | |
3019eac3 DE |
1728 | die_reader_func_ftype *die_reader_func, void *data); |
1729 | ||
dee91e82 DE |
1730 | static void init_cutu_and_read_dies_simple |
1731 | (struct dwarf2_per_cu_data *this_cu, | |
1732 | die_reader_func_ftype *die_reader_func, void *data); | |
9291a0cd | 1733 | |
673bfd45 | 1734 | static htab_t allocate_signatured_type_table (struct objfile *objfile); |
1fd400ff | 1735 | |
3019eac3 DE |
1736 | static htab_t allocate_dwo_unit_table (struct objfile *objfile); |
1737 | ||
1738 | static struct dwo_unit *lookup_dwo_comp_unit | |
a1855c1d | 1739 | (struct dwarf2_per_cu_data *, const char *, const char *, ULONGEST); |
3019eac3 DE |
1740 | |
1741 | static struct dwo_unit *lookup_dwo_type_unit | |
a1855c1d | 1742 | (struct signatured_type *, const char *, const char *); |
3019eac3 DE |
1743 | |
1744 | static void free_dwo_file_cleanup (void *); | |
1745 | ||
95554aad TT |
1746 | static void process_cu_includes (void); |
1747 | ||
1b80a9fa JK |
1748 | static void check_producer (struct dwarf2_cu *cu); |
1749 | ||
9291a0cd TT |
1750 | #if WORDS_BIGENDIAN |
1751 | ||
1752 | /* Convert VALUE between big- and little-endian. */ | |
1753 | static offset_type | |
1754 | byte_swap (offset_type value) | |
1755 | { | |
1756 | offset_type result; | |
1757 | ||
1758 | result = (value & 0xff) << 24; | |
1759 | result |= (value & 0xff00) << 8; | |
1760 | result |= (value & 0xff0000) >> 8; | |
1761 | result |= (value & 0xff000000) >> 24; | |
1762 | return result; | |
1763 | } | |
1764 | ||
1765 | #define MAYBE_SWAP(V) byte_swap (V) | |
1766 | ||
1767 | #else | |
1768 | #define MAYBE_SWAP(V) (V) | |
1769 | #endif /* WORDS_BIGENDIAN */ | |
1770 | ||
1771 | /* The suffix for an index file. */ | |
1772 | #define INDEX_SUFFIX ".gdb-index" | |
1773 | ||
c906108c | 1774 | /* Try to locate the sections we need for DWARF 2 debugging |
251d32d9 TG |
1775 | information and return true if we have enough to do something. |
1776 | NAMES points to the dwarf2 section names, or is NULL if the standard | |
1777 | ELF names are used. */ | |
c906108c SS |
1778 | |
1779 | int | |
251d32d9 TG |
1780 | dwarf2_has_info (struct objfile *objfile, |
1781 | const struct dwarf2_debug_sections *names) | |
c906108c | 1782 | { |
be391dca TT |
1783 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); |
1784 | if (!dwarf2_per_objfile) | |
1785 | { | |
1786 | /* Initialize per-objfile state. */ | |
1787 | struct dwarf2_per_objfile *data | |
1788 | = obstack_alloc (&objfile->objfile_obstack, sizeof (*data)); | |
9a619af0 | 1789 | |
be391dca TT |
1790 | memset (data, 0, sizeof (*data)); |
1791 | set_objfile_data (objfile, dwarf2_objfile_data_key, data); | |
1792 | dwarf2_per_objfile = data; | |
6502dd73 | 1793 | |
251d32d9 TG |
1794 | bfd_map_over_sections (objfile->obfd, dwarf2_locate_sections, |
1795 | (void *) names); | |
be391dca TT |
1796 | dwarf2_per_objfile->objfile = objfile; |
1797 | } | |
1798 | return (dwarf2_per_objfile->info.asection != NULL | |
1799 | && dwarf2_per_objfile->abbrev.asection != NULL); | |
c906108c SS |
1800 | } |
1801 | ||
251d32d9 TG |
1802 | /* When loading sections, we look either for uncompressed section or for |
1803 | compressed section names. */ | |
233a11ab CS |
1804 | |
1805 | static int | |
251d32d9 TG |
1806 | section_is_p (const char *section_name, |
1807 | const struct dwarf2_section_names *names) | |
233a11ab | 1808 | { |
251d32d9 TG |
1809 | if (names->normal != NULL |
1810 | && strcmp (section_name, names->normal) == 0) | |
1811 | return 1; | |
1812 | if (names->compressed != NULL | |
1813 | && strcmp (section_name, names->compressed) == 0) | |
1814 | return 1; | |
1815 | return 0; | |
233a11ab CS |
1816 | } |
1817 | ||
c906108c SS |
1818 | /* This function is mapped across the sections and remembers the |
1819 | offset and size of each of the debugging sections we are interested | |
1820 | in. */ | |
1821 | ||
1822 | static void | |
251d32d9 | 1823 | dwarf2_locate_sections (bfd *abfd, asection *sectp, void *vnames) |
c906108c | 1824 | { |
251d32d9 | 1825 | const struct dwarf2_debug_sections *names; |
dc7650b8 | 1826 | flagword aflag = bfd_get_section_flags (abfd, sectp); |
251d32d9 TG |
1827 | |
1828 | if (vnames == NULL) | |
1829 | names = &dwarf2_elf_names; | |
1830 | else | |
1831 | names = (const struct dwarf2_debug_sections *) vnames; | |
1832 | ||
dc7650b8 JK |
1833 | if ((aflag & SEC_HAS_CONTENTS) == 0) |
1834 | { | |
1835 | } | |
1836 | else if (section_is_p (sectp->name, &names->info)) | |
c906108c | 1837 | { |
dce234bc PP |
1838 | dwarf2_per_objfile->info.asection = sectp; |
1839 | dwarf2_per_objfile->info.size = bfd_get_section_size (sectp); | |
c906108c | 1840 | } |
251d32d9 | 1841 | else if (section_is_p (sectp->name, &names->abbrev)) |
c906108c | 1842 | { |
dce234bc PP |
1843 | dwarf2_per_objfile->abbrev.asection = sectp; |
1844 | dwarf2_per_objfile->abbrev.size = bfd_get_section_size (sectp); | |
c906108c | 1845 | } |
251d32d9 | 1846 | else if (section_is_p (sectp->name, &names->line)) |
c906108c | 1847 | { |
dce234bc PP |
1848 | dwarf2_per_objfile->line.asection = sectp; |
1849 | dwarf2_per_objfile->line.size = bfd_get_section_size (sectp); | |
c906108c | 1850 | } |
251d32d9 | 1851 | else if (section_is_p (sectp->name, &names->loc)) |
c906108c | 1852 | { |
dce234bc PP |
1853 | dwarf2_per_objfile->loc.asection = sectp; |
1854 | dwarf2_per_objfile->loc.size = bfd_get_section_size (sectp); | |
c906108c | 1855 | } |
251d32d9 | 1856 | else if (section_is_p (sectp->name, &names->macinfo)) |
c906108c | 1857 | { |
dce234bc PP |
1858 | dwarf2_per_objfile->macinfo.asection = sectp; |
1859 | dwarf2_per_objfile->macinfo.size = bfd_get_section_size (sectp); | |
c906108c | 1860 | } |
cf2c3c16 TT |
1861 | else if (section_is_p (sectp->name, &names->macro)) |
1862 | { | |
1863 | dwarf2_per_objfile->macro.asection = sectp; | |
1864 | dwarf2_per_objfile->macro.size = bfd_get_section_size (sectp); | |
1865 | } | |
251d32d9 | 1866 | else if (section_is_p (sectp->name, &names->str)) |
c906108c | 1867 | { |
dce234bc PP |
1868 | dwarf2_per_objfile->str.asection = sectp; |
1869 | dwarf2_per_objfile->str.size = bfd_get_section_size (sectp); | |
c906108c | 1870 | } |
3019eac3 DE |
1871 | else if (section_is_p (sectp->name, &names->addr)) |
1872 | { | |
1873 | dwarf2_per_objfile->addr.asection = sectp; | |
1874 | dwarf2_per_objfile->addr.size = bfd_get_section_size (sectp); | |
1875 | } | |
251d32d9 | 1876 | else if (section_is_p (sectp->name, &names->frame)) |
b6af0555 | 1877 | { |
dce234bc PP |
1878 | dwarf2_per_objfile->frame.asection = sectp; |
1879 | dwarf2_per_objfile->frame.size = bfd_get_section_size (sectp); | |
b6af0555 | 1880 | } |
251d32d9 | 1881 | else if (section_is_p (sectp->name, &names->eh_frame)) |
b6af0555 | 1882 | { |
dc7650b8 JK |
1883 | dwarf2_per_objfile->eh_frame.asection = sectp; |
1884 | dwarf2_per_objfile->eh_frame.size = bfd_get_section_size (sectp); | |
b6af0555 | 1885 | } |
251d32d9 | 1886 | else if (section_is_p (sectp->name, &names->ranges)) |
af34e669 | 1887 | { |
dce234bc PP |
1888 | dwarf2_per_objfile->ranges.asection = sectp; |
1889 | dwarf2_per_objfile->ranges.size = bfd_get_section_size (sectp); | |
af34e669 | 1890 | } |
251d32d9 | 1891 | else if (section_is_p (sectp->name, &names->types)) |
348e048f | 1892 | { |
8b70b953 TT |
1893 | struct dwarf2_section_info type_section; |
1894 | ||
1895 | memset (&type_section, 0, sizeof (type_section)); | |
1896 | type_section.asection = sectp; | |
1897 | type_section.size = bfd_get_section_size (sectp); | |
1898 | ||
1899 | VEC_safe_push (dwarf2_section_info_def, dwarf2_per_objfile->types, | |
1900 | &type_section); | |
348e048f | 1901 | } |
251d32d9 | 1902 | else if (section_is_p (sectp->name, &names->gdb_index)) |
9291a0cd TT |
1903 | { |
1904 | dwarf2_per_objfile->gdb_index.asection = sectp; | |
1905 | dwarf2_per_objfile->gdb_index.size = bfd_get_section_size (sectp); | |
1906 | } | |
dce234bc | 1907 | |
72dca2f5 FR |
1908 | if ((bfd_get_section_flags (abfd, sectp) & SEC_LOAD) |
1909 | && bfd_section_vma (abfd, sectp) == 0) | |
1910 | dwarf2_per_objfile->has_section_at_zero = 1; | |
c906108c SS |
1911 | } |
1912 | ||
fceca515 DE |
1913 | /* A helper function that decides whether a section is empty, |
1914 | or not present. */ | |
9e0ac564 TT |
1915 | |
1916 | static int | |
1917 | dwarf2_section_empty_p (struct dwarf2_section_info *info) | |
1918 | { | |
1919 | return info->asection == NULL || info->size == 0; | |
1920 | } | |
1921 | ||
3019eac3 DE |
1922 | /* Read the contents of the section INFO. |
1923 | OBJFILE is the main object file, but not necessarily the file where | |
1924 | the section comes from. E.g., for DWO files INFO->asection->owner | |
1925 | is the bfd of the DWO file. | |
dce234bc | 1926 | If the section is compressed, uncompress it before returning. */ |
c906108c | 1927 | |
dce234bc PP |
1928 | static void |
1929 | dwarf2_read_section (struct objfile *objfile, struct dwarf2_section_info *info) | |
c906108c | 1930 | { |
dce234bc | 1931 | asection *sectp = info->asection; |
3019eac3 | 1932 | bfd *abfd; |
dce234bc PP |
1933 | gdb_byte *buf, *retbuf; |
1934 | unsigned char header[4]; | |
c906108c | 1935 | |
be391dca TT |
1936 | if (info->readin) |
1937 | return; | |
dce234bc | 1938 | info->buffer = NULL; |
be391dca | 1939 | info->readin = 1; |
188dd5d6 | 1940 | |
9e0ac564 | 1941 | if (dwarf2_section_empty_p (info)) |
dce234bc | 1942 | return; |
c906108c | 1943 | |
3019eac3 DE |
1944 | abfd = sectp->owner; |
1945 | ||
4bf44c1c TT |
1946 | /* If the section has relocations, we must read it ourselves. |
1947 | Otherwise we attach it to the BFD. */ | |
1948 | if ((sectp->flags & SEC_RELOC) == 0) | |
dce234bc | 1949 | { |
4bf44c1c | 1950 | const gdb_byte *bytes = gdb_bfd_map_section (sectp, &info->size); |
dce234bc | 1951 | |
4bf44c1c TT |
1952 | /* We have to cast away const here for historical reasons. |
1953 | Fixing dwarf2read to be const-correct would be quite nice. */ | |
1954 | info->buffer = (gdb_byte *) bytes; | |
1955 | return; | |
dce234bc | 1956 | } |
dce234bc | 1957 | |
4bf44c1c TT |
1958 | buf = obstack_alloc (&objfile->objfile_obstack, info->size); |
1959 | info->buffer = buf; | |
dce234bc PP |
1960 | |
1961 | /* When debugging .o files, we may need to apply relocations; see | |
1962 | http://sourceware.org/ml/gdb-patches/2002-04/msg00136.html . | |
1963 | We never compress sections in .o files, so we only need to | |
1964 | try this when the section is not compressed. */ | |
ac8035ab | 1965 | retbuf = symfile_relocate_debug_section (objfile, sectp, buf); |
dce234bc PP |
1966 | if (retbuf != NULL) |
1967 | { | |
1968 | info->buffer = retbuf; | |
1969 | return; | |
1970 | } | |
1971 | ||
1972 | if (bfd_seek (abfd, sectp->filepos, SEEK_SET) != 0 | |
1973 | || bfd_bread (buf, info->size, abfd) != info->size) | |
1974 | error (_("Dwarf Error: Can't read DWARF data from '%s'"), | |
1975 | bfd_get_filename (abfd)); | |
1976 | } | |
1977 | ||
9e0ac564 TT |
1978 | /* A helper function that returns the size of a section in a safe way. |
1979 | If you are positive that the section has been read before using the | |
1980 | size, then it is safe to refer to the dwarf2_section_info object's | |
1981 | "size" field directly. In other cases, you must call this | |
1982 | function, because for compressed sections the size field is not set | |
1983 | correctly until the section has been read. */ | |
1984 | ||
1985 | static bfd_size_type | |
1986 | dwarf2_section_size (struct objfile *objfile, | |
1987 | struct dwarf2_section_info *info) | |
1988 | { | |
1989 | if (!info->readin) | |
1990 | dwarf2_read_section (objfile, info); | |
1991 | return info->size; | |
1992 | } | |
1993 | ||
dce234bc | 1994 | /* Fill in SECTP, BUFP and SIZEP with section info, given OBJFILE and |
0963b4bd | 1995 | SECTION_NAME. */ |
af34e669 | 1996 | |
dce234bc | 1997 | void |
3017a003 TG |
1998 | dwarf2_get_section_info (struct objfile *objfile, |
1999 | enum dwarf2_section_enum sect, | |
dce234bc PP |
2000 | asection **sectp, gdb_byte **bufp, |
2001 | bfd_size_type *sizep) | |
2002 | { | |
2003 | struct dwarf2_per_objfile *data | |
2004 | = objfile_data (objfile, dwarf2_objfile_data_key); | |
2005 | struct dwarf2_section_info *info; | |
a3b2a86b TT |
2006 | |
2007 | /* We may see an objfile without any DWARF, in which case we just | |
2008 | return nothing. */ | |
2009 | if (data == NULL) | |
2010 | { | |
2011 | *sectp = NULL; | |
2012 | *bufp = NULL; | |
2013 | *sizep = 0; | |
2014 | return; | |
2015 | } | |
3017a003 TG |
2016 | switch (sect) |
2017 | { | |
2018 | case DWARF2_DEBUG_FRAME: | |
2019 | info = &data->frame; | |
2020 | break; | |
2021 | case DWARF2_EH_FRAME: | |
2022 | info = &data->eh_frame; | |
2023 | break; | |
2024 | default: | |
2025 | gdb_assert_not_reached ("unexpected section"); | |
2026 | } | |
dce234bc | 2027 | |
9e0ac564 | 2028 | dwarf2_read_section (objfile, info); |
dce234bc PP |
2029 | |
2030 | *sectp = info->asection; | |
2031 | *bufp = info->buffer; | |
2032 | *sizep = info->size; | |
2033 | } | |
2034 | ||
36586728 TT |
2035 | /* A helper function to find the sections for a .dwz file. */ |
2036 | ||
2037 | static void | |
2038 | locate_dwz_sections (bfd *abfd, asection *sectp, void *arg) | |
2039 | { | |
2040 | struct dwz_file *dwz_file = arg; | |
2041 | ||
2042 | /* Note that we only support the standard ELF names, because .dwz | |
2043 | is ELF-only (at the time of writing). */ | |
2044 | if (section_is_p (sectp->name, &dwarf2_elf_names.abbrev)) | |
2045 | { | |
2046 | dwz_file->abbrev.asection = sectp; | |
2047 | dwz_file->abbrev.size = bfd_get_section_size (sectp); | |
2048 | } | |
2049 | else if (section_is_p (sectp->name, &dwarf2_elf_names.info)) | |
2050 | { | |
2051 | dwz_file->info.asection = sectp; | |
2052 | dwz_file->info.size = bfd_get_section_size (sectp); | |
2053 | } | |
2054 | else if (section_is_p (sectp->name, &dwarf2_elf_names.str)) | |
2055 | { | |
2056 | dwz_file->str.asection = sectp; | |
2057 | dwz_file->str.size = bfd_get_section_size (sectp); | |
2058 | } | |
2059 | else if (section_is_p (sectp->name, &dwarf2_elf_names.line)) | |
2060 | { | |
2061 | dwz_file->line.asection = sectp; | |
2062 | dwz_file->line.size = bfd_get_section_size (sectp); | |
2063 | } | |
2064 | else if (section_is_p (sectp->name, &dwarf2_elf_names.macro)) | |
2065 | { | |
2066 | dwz_file->macro.asection = sectp; | |
2067 | dwz_file->macro.size = bfd_get_section_size (sectp); | |
2068 | } | |
2ec9a5e0 TT |
2069 | else if (section_is_p (sectp->name, &dwarf2_elf_names.gdb_index)) |
2070 | { | |
2071 | dwz_file->gdb_index.asection = sectp; | |
2072 | dwz_file->gdb_index.size = bfd_get_section_size (sectp); | |
2073 | } | |
36586728 TT |
2074 | } |
2075 | ||
2076 | /* Open the separate '.dwz' debug file, if needed. Error if the file | |
2077 | cannot be found. */ | |
2078 | ||
2079 | static struct dwz_file * | |
2080 | dwarf2_get_dwz_file (void) | |
2081 | { | |
2082 | bfd *abfd, *dwz_bfd; | |
2083 | asection *section; | |
2084 | gdb_byte *data; | |
2085 | struct cleanup *cleanup; | |
2086 | const char *filename; | |
2087 | struct dwz_file *result; | |
2088 | ||
2089 | if (dwarf2_per_objfile->dwz_file != NULL) | |
2090 | return dwarf2_per_objfile->dwz_file; | |
2091 | ||
2092 | abfd = dwarf2_per_objfile->objfile->obfd; | |
2093 | section = bfd_get_section_by_name (abfd, ".gnu_debugaltlink"); | |
2094 | if (section == NULL) | |
2095 | error (_("could not find '.gnu_debugaltlink' section")); | |
2096 | if (!bfd_malloc_and_get_section (abfd, section, &data)) | |
2097 | error (_("could not read '.gnu_debugaltlink' section: %s"), | |
2098 | bfd_errmsg (bfd_get_error ())); | |
2099 | cleanup = make_cleanup (xfree, data); | |
2100 | ||
2101 | filename = data; | |
2102 | if (!IS_ABSOLUTE_PATH (filename)) | |
2103 | { | |
2104 | char *abs = gdb_realpath (dwarf2_per_objfile->objfile->name); | |
2105 | char *rel; | |
2106 | ||
2107 | make_cleanup (xfree, abs); | |
2108 | abs = ldirname (abs); | |
2109 | make_cleanup (xfree, abs); | |
2110 | ||
2111 | rel = concat (abs, SLASH_STRING, filename, (char *) NULL); | |
2112 | make_cleanup (xfree, rel); | |
2113 | filename = rel; | |
2114 | } | |
2115 | ||
2116 | /* The format is just a NUL-terminated file name, followed by the | |
2117 | build-id. For now, though, we ignore the build-id. */ | |
2118 | dwz_bfd = gdb_bfd_open (filename, gnutarget, -1); | |
2119 | if (dwz_bfd == NULL) | |
2120 | error (_("could not read '%s': %s"), filename, | |
2121 | bfd_errmsg (bfd_get_error ())); | |
2122 | ||
2123 | if (!bfd_check_format (dwz_bfd, bfd_object)) | |
2124 | { | |
2125 | gdb_bfd_unref (dwz_bfd); | |
2126 | error (_("file '%s' was not usable: %s"), filename, | |
2127 | bfd_errmsg (bfd_get_error ())); | |
2128 | } | |
2129 | ||
2130 | result = OBSTACK_ZALLOC (&dwarf2_per_objfile->objfile->objfile_obstack, | |
2131 | struct dwz_file); | |
2132 | result->dwz_bfd = dwz_bfd; | |
2133 | ||
2134 | bfd_map_over_sections (dwz_bfd, locate_dwz_sections, result); | |
2135 | ||
2136 | do_cleanups (cleanup); | |
2137 | ||
8d2cc612 | 2138 | dwarf2_per_objfile->dwz_file = result; |
36586728 TT |
2139 | return result; |
2140 | } | |
9291a0cd | 2141 | \f |
7b9f3c50 DE |
2142 | /* DWARF quick_symbols_functions support. */ |
2143 | ||
2144 | /* TUs can share .debug_line entries, and there can be a lot more TUs than | |
2145 | unique line tables, so we maintain a separate table of all .debug_line | |
2146 | derived entries to support the sharing. | |
2147 | All the quick functions need is the list of file names. We discard the | |
2148 | line_header when we're done and don't need to record it here. */ | |
2149 | struct quick_file_names | |
2150 | { | |
094b34ac DE |
2151 | /* The data used to construct the hash key. */ |
2152 | struct stmt_list_hash hash; | |
7b9f3c50 DE |
2153 | |
2154 | /* The number of entries in file_names, real_names. */ | |
2155 | unsigned int num_file_names; | |
2156 | ||
2157 | /* The file names from the line table, after being run through | |
2158 | file_full_name. */ | |
2159 | const char **file_names; | |
2160 | ||
2161 | /* The file names from the line table after being run through | |
2162 | gdb_realpath. These are computed lazily. */ | |
2163 | const char **real_names; | |
2164 | }; | |
2165 | ||
2166 | /* When using the index (and thus not using psymtabs), each CU has an | |
2167 | object of this type. This is used to hold information needed by | |
2168 | the various "quick" methods. */ | |
2169 | struct dwarf2_per_cu_quick_data | |
2170 | { | |
2171 | /* The file table. This can be NULL if there was no file table | |
2172 | or it's currently not read in. | |
2173 | NOTE: This points into dwarf2_per_objfile->quick_file_names_table. */ | |
2174 | struct quick_file_names *file_names; | |
2175 | ||
2176 | /* The corresponding symbol table. This is NULL if symbols for this | |
2177 | CU have not yet been read. */ | |
2178 | struct symtab *symtab; | |
2179 | ||
2180 | /* A temporary mark bit used when iterating over all CUs in | |
2181 | expand_symtabs_matching. */ | |
2182 | unsigned int mark : 1; | |
2183 | ||
2184 | /* True if we've tried to read the file table and found there isn't one. | |
2185 | There will be no point in trying to read it again next time. */ | |
2186 | unsigned int no_file_data : 1; | |
2187 | }; | |
2188 | ||
094b34ac DE |
2189 | /* Utility hash function for a stmt_list_hash. */ |
2190 | ||
2191 | static hashval_t | |
2192 | hash_stmt_list_entry (const struct stmt_list_hash *stmt_list_hash) | |
2193 | { | |
2194 | hashval_t v = 0; | |
2195 | ||
2196 | if (stmt_list_hash->dwo_unit != NULL) | |
2197 | v += (uintptr_t) stmt_list_hash->dwo_unit->dwo_file; | |
2198 | v += stmt_list_hash->line_offset.sect_off; | |
2199 | return v; | |
2200 | } | |
2201 | ||
2202 | /* Utility equality function for a stmt_list_hash. */ | |
2203 | ||
2204 | static int | |
2205 | eq_stmt_list_entry (const struct stmt_list_hash *lhs, | |
2206 | const struct stmt_list_hash *rhs) | |
2207 | { | |
2208 | if ((lhs->dwo_unit != NULL) != (rhs->dwo_unit != NULL)) | |
2209 | return 0; | |
2210 | if (lhs->dwo_unit != NULL | |
2211 | && lhs->dwo_unit->dwo_file != rhs->dwo_unit->dwo_file) | |
2212 | return 0; | |
2213 | ||
2214 | return lhs->line_offset.sect_off == rhs->line_offset.sect_off; | |
2215 | } | |
2216 | ||
7b9f3c50 DE |
2217 | /* Hash function for a quick_file_names. */ |
2218 | ||
2219 | static hashval_t | |
2220 | hash_file_name_entry (const void *e) | |
2221 | { | |
2222 | const struct quick_file_names *file_data = e; | |
2223 | ||
094b34ac | 2224 | return hash_stmt_list_entry (&file_data->hash); |
7b9f3c50 DE |
2225 | } |
2226 | ||
2227 | /* Equality function for a quick_file_names. */ | |
2228 | ||
2229 | static int | |
2230 | eq_file_name_entry (const void *a, const void *b) | |
2231 | { | |
2232 | const struct quick_file_names *ea = a; | |
2233 | const struct quick_file_names *eb = b; | |
2234 | ||
094b34ac | 2235 | return eq_stmt_list_entry (&ea->hash, &eb->hash); |
7b9f3c50 DE |
2236 | } |
2237 | ||
2238 | /* Delete function for a quick_file_names. */ | |
2239 | ||
2240 | static void | |
2241 | delete_file_name_entry (void *e) | |
2242 | { | |
2243 | struct quick_file_names *file_data = e; | |
2244 | int i; | |
2245 | ||
2246 | for (i = 0; i < file_data->num_file_names; ++i) | |
2247 | { | |
2248 | xfree ((void*) file_data->file_names[i]); | |
2249 | if (file_data->real_names) | |
2250 | xfree ((void*) file_data->real_names[i]); | |
2251 | } | |
2252 | ||
2253 | /* The space for the struct itself lives on objfile_obstack, | |
2254 | so we don't free it here. */ | |
2255 | } | |
2256 | ||
2257 | /* Create a quick_file_names hash table. */ | |
2258 | ||
2259 | static htab_t | |
2260 | create_quick_file_names_table (unsigned int nr_initial_entries) | |
2261 | { | |
2262 | return htab_create_alloc (nr_initial_entries, | |
2263 | hash_file_name_entry, eq_file_name_entry, | |
2264 | delete_file_name_entry, xcalloc, xfree); | |
2265 | } | |
9291a0cd | 2266 | |
918dd910 JK |
2267 | /* Read in PER_CU->CU. This function is unrelated to symtabs, symtab would |
2268 | have to be created afterwards. You should call age_cached_comp_units after | |
2269 | processing PER_CU->CU. dw2_setup must have been already called. */ | |
2270 | ||
2271 | static void | |
2272 | load_cu (struct dwarf2_per_cu_data *per_cu) | |
2273 | { | |
3019eac3 | 2274 | if (per_cu->is_debug_types) |
e5fe5e75 | 2275 | load_full_type_unit (per_cu); |
918dd910 | 2276 | else |
95554aad | 2277 | load_full_comp_unit (per_cu, language_minimal); |
918dd910 | 2278 | |
918dd910 | 2279 | gdb_assert (per_cu->cu != NULL); |
2dc860c0 DE |
2280 | |
2281 | dwarf2_find_base_address (per_cu->cu->dies, per_cu->cu); | |
918dd910 JK |
2282 | } |
2283 | ||
a0f42c21 | 2284 | /* Read in the symbols for PER_CU. */ |
2fdf6df6 | 2285 | |
9291a0cd | 2286 | static void |
a0f42c21 | 2287 | dw2_do_instantiate_symtab (struct dwarf2_per_cu_data *per_cu) |
9291a0cd TT |
2288 | { |
2289 | struct cleanup *back_to; | |
2290 | ||
f4dc4d17 DE |
2291 | /* Skip type_unit_groups, reading the type units they contain |
2292 | is handled elsewhere. */ | |
2293 | if (IS_TYPE_UNIT_GROUP (per_cu)) | |
2294 | return; | |
2295 | ||
9291a0cd TT |
2296 | back_to = make_cleanup (dwarf2_release_queue, NULL); |
2297 | ||
95554aad TT |
2298 | if (dwarf2_per_objfile->using_index |
2299 | ? per_cu->v.quick->symtab == NULL | |
2300 | : (per_cu->v.psymtab == NULL || !per_cu->v.psymtab->readin)) | |
2301 | { | |
2302 | queue_comp_unit (per_cu, language_minimal); | |
2303 | load_cu (per_cu); | |
2304 | } | |
9291a0cd | 2305 | |
a0f42c21 | 2306 | process_queue (); |
9291a0cd TT |
2307 | |
2308 | /* Age the cache, releasing compilation units that have not | |
2309 | been used recently. */ | |
2310 | age_cached_comp_units (); | |
2311 | ||
2312 | do_cleanups (back_to); | |
2313 | } | |
2314 | ||
2315 | /* Ensure that the symbols for PER_CU have been read in. OBJFILE is | |
2316 | the objfile from which this CU came. Returns the resulting symbol | |
2317 | table. */ | |
2fdf6df6 | 2318 | |
9291a0cd | 2319 | static struct symtab * |
a0f42c21 | 2320 | dw2_instantiate_symtab (struct dwarf2_per_cu_data *per_cu) |
9291a0cd | 2321 | { |
95554aad | 2322 | gdb_assert (dwarf2_per_objfile->using_index); |
9291a0cd TT |
2323 | if (!per_cu->v.quick->symtab) |
2324 | { | |
2325 | struct cleanup *back_to = make_cleanup (free_cached_comp_units, NULL); | |
2326 | increment_reading_symtab (); | |
a0f42c21 | 2327 | dw2_do_instantiate_symtab (per_cu); |
95554aad | 2328 | process_cu_includes (); |
9291a0cd TT |
2329 | do_cleanups (back_to); |
2330 | } | |
2331 | return per_cu->v.quick->symtab; | |
2332 | } | |
2333 | ||
f4dc4d17 DE |
2334 | /* Return the CU given its index. |
2335 | ||
2336 | This is intended for loops like: | |
2337 | ||
2338 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units | |
2339 | + dwarf2_per_objfile->n_type_units); ++i) | |
2340 | { | |
2341 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); | |
2342 | ||
2343 | ...; | |
2344 | } | |
2345 | */ | |
2fdf6df6 | 2346 | |
1fd400ff TT |
2347 | static struct dwarf2_per_cu_data * |
2348 | dw2_get_cu (int index) | |
2349 | { | |
2350 | if (index >= dwarf2_per_objfile->n_comp_units) | |
2351 | { | |
f4dc4d17 | 2352 | index -= dwarf2_per_objfile->n_comp_units; |
094b34ac DE |
2353 | gdb_assert (index < dwarf2_per_objfile->n_type_units); |
2354 | return &dwarf2_per_objfile->all_type_units[index]->per_cu; | |
f4dc4d17 DE |
2355 | } |
2356 | ||
2357 | return dwarf2_per_objfile->all_comp_units[index]; | |
2358 | } | |
2359 | ||
2360 | /* Return the primary CU given its index. | |
2361 | The difference between this function and dw2_get_cu is in the handling | |
2362 | of type units (TUs). Here we return the type_unit_group object. | |
2363 | ||
2364 | This is intended for loops like: | |
2365 | ||
2366 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units | |
2367 | + dwarf2_per_objfile->n_type_unit_groups); ++i) | |
2368 | { | |
2369 | struct dwarf2_per_cu_data *per_cu = dw2_get_primary_cu (i); | |
2370 | ||
2371 | ...; | |
2372 | } | |
2373 | */ | |
2374 | ||
2375 | static struct dwarf2_per_cu_data * | |
2376 | dw2_get_primary_cu (int index) | |
2377 | { | |
2378 | if (index >= dwarf2_per_objfile->n_comp_units) | |
2379 | { | |
1fd400ff | 2380 | index -= dwarf2_per_objfile->n_comp_units; |
094b34ac DE |
2381 | gdb_assert (index < dwarf2_per_objfile->n_type_unit_groups); |
2382 | return &dwarf2_per_objfile->all_type_unit_groups[index]->per_cu; | |
1fd400ff | 2383 | } |
f4dc4d17 | 2384 | |
1fd400ff TT |
2385 | return dwarf2_per_objfile->all_comp_units[index]; |
2386 | } | |
2387 | ||
2ec9a5e0 TT |
2388 | /* A helper for create_cus_from_index that handles a given list of |
2389 | CUs. */ | |
2fdf6df6 | 2390 | |
74a0d9f6 | 2391 | static void |
2ec9a5e0 TT |
2392 | create_cus_from_index_list (struct objfile *objfile, |
2393 | const gdb_byte *cu_list, offset_type n_elements, | |
2394 | struct dwarf2_section_info *section, | |
2395 | int is_dwz, | |
2396 | int base_offset) | |
9291a0cd TT |
2397 | { |
2398 | offset_type i; | |
9291a0cd | 2399 | |
2ec9a5e0 | 2400 | for (i = 0; i < n_elements; i += 2) |
9291a0cd TT |
2401 | { |
2402 | struct dwarf2_per_cu_data *the_cu; | |
2403 | ULONGEST offset, length; | |
2404 | ||
74a0d9f6 JK |
2405 | gdb_static_assert (sizeof (ULONGEST) >= 8); |
2406 | offset = extract_unsigned_integer (cu_list, 8, BFD_ENDIAN_LITTLE); | |
2407 | length = extract_unsigned_integer (cu_list + 8, 8, BFD_ENDIAN_LITTLE); | |
9291a0cd TT |
2408 | cu_list += 2 * 8; |
2409 | ||
2410 | the_cu = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
2411 | struct dwarf2_per_cu_data); | |
b64f50a1 | 2412 | the_cu->offset.sect_off = offset; |
9291a0cd TT |
2413 | the_cu->length = length; |
2414 | the_cu->objfile = objfile; | |
8a0459fd | 2415 | the_cu->section = section; |
9291a0cd TT |
2416 | the_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
2417 | struct dwarf2_per_cu_quick_data); | |
2ec9a5e0 TT |
2418 | the_cu->is_dwz = is_dwz; |
2419 | dwarf2_per_objfile->all_comp_units[base_offset + i / 2] = the_cu; | |
9291a0cd | 2420 | } |
9291a0cd TT |
2421 | } |
2422 | ||
2ec9a5e0 | 2423 | /* Read the CU list from the mapped index, and use it to create all |
74a0d9f6 | 2424 | the CU objects for this objfile. */ |
2ec9a5e0 | 2425 | |
74a0d9f6 | 2426 | static void |
2ec9a5e0 TT |
2427 | create_cus_from_index (struct objfile *objfile, |
2428 | const gdb_byte *cu_list, offset_type cu_list_elements, | |
2429 | const gdb_byte *dwz_list, offset_type dwz_elements) | |
2430 | { | |
2431 | struct dwz_file *dwz; | |
2432 | ||
2433 | dwarf2_per_objfile->n_comp_units = (cu_list_elements + dwz_elements) / 2; | |
2434 | dwarf2_per_objfile->all_comp_units | |
2435 | = obstack_alloc (&objfile->objfile_obstack, | |
2436 | dwarf2_per_objfile->n_comp_units | |
2437 | * sizeof (struct dwarf2_per_cu_data *)); | |
2438 | ||
74a0d9f6 JK |
2439 | create_cus_from_index_list (objfile, cu_list, cu_list_elements, |
2440 | &dwarf2_per_objfile->info, 0, 0); | |
2ec9a5e0 TT |
2441 | |
2442 | if (dwz_elements == 0) | |
74a0d9f6 | 2443 | return; |
2ec9a5e0 TT |
2444 | |
2445 | dwz = dwarf2_get_dwz_file (); | |
74a0d9f6 JK |
2446 | create_cus_from_index_list (objfile, dwz_list, dwz_elements, &dwz->info, 1, |
2447 | cu_list_elements / 2); | |
2ec9a5e0 TT |
2448 | } |
2449 | ||
1fd400ff | 2450 | /* Create the signatured type hash table from the index. */ |
673bfd45 | 2451 | |
74a0d9f6 | 2452 | static void |
673bfd45 | 2453 | create_signatured_type_table_from_index (struct objfile *objfile, |
8b70b953 | 2454 | struct dwarf2_section_info *section, |
673bfd45 DE |
2455 | const gdb_byte *bytes, |
2456 | offset_type elements) | |
1fd400ff TT |
2457 | { |
2458 | offset_type i; | |
673bfd45 | 2459 | htab_t sig_types_hash; |
1fd400ff | 2460 | |
d467dd73 DE |
2461 | dwarf2_per_objfile->n_type_units = elements / 3; |
2462 | dwarf2_per_objfile->all_type_units | |
1fd400ff | 2463 | = obstack_alloc (&objfile->objfile_obstack, |
d467dd73 | 2464 | dwarf2_per_objfile->n_type_units |
b4dd5633 | 2465 | * sizeof (struct signatured_type *)); |
1fd400ff | 2466 | |
673bfd45 | 2467 | sig_types_hash = allocate_signatured_type_table (objfile); |
1fd400ff TT |
2468 | |
2469 | for (i = 0; i < elements; i += 3) | |
2470 | { | |
52dc124a DE |
2471 | struct signatured_type *sig_type; |
2472 | ULONGEST offset, type_offset_in_tu, signature; | |
1fd400ff TT |
2473 | void **slot; |
2474 | ||
74a0d9f6 JK |
2475 | gdb_static_assert (sizeof (ULONGEST) >= 8); |
2476 | offset = extract_unsigned_integer (bytes, 8, BFD_ENDIAN_LITTLE); | |
2477 | type_offset_in_tu = extract_unsigned_integer (bytes + 8, 8, | |
2478 | BFD_ENDIAN_LITTLE); | |
1fd400ff TT |
2479 | signature = extract_unsigned_integer (bytes + 16, 8, BFD_ENDIAN_LITTLE); |
2480 | bytes += 3 * 8; | |
2481 | ||
52dc124a | 2482 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
1fd400ff | 2483 | struct signatured_type); |
52dc124a | 2484 | sig_type->signature = signature; |
3019eac3 DE |
2485 | sig_type->type_offset_in_tu.cu_off = type_offset_in_tu; |
2486 | sig_type->per_cu.is_debug_types = 1; | |
8a0459fd | 2487 | sig_type->per_cu.section = section; |
52dc124a DE |
2488 | sig_type->per_cu.offset.sect_off = offset; |
2489 | sig_type->per_cu.objfile = objfile; | |
2490 | sig_type->per_cu.v.quick | |
1fd400ff TT |
2491 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
2492 | struct dwarf2_per_cu_quick_data); | |
2493 | ||
52dc124a DE |
2494 | slot = htab_find_slot (sig_types_hash, sig_type, INSERT); |
2495 | *slot = sig_type; | |
1fd400ff | 2496 | |
b4dd5633 | 2497 | dwarf2_per_objfile->all_type_units[i / 3] = sig_type; |
1fd400ff TT |
2498 | } |
2499 | ||
673bfd45 | 2500 | dwarf2_per_objfile->signatured_types = sig_types_hash; |
1fd400ff TT |
2501 | } |
2502 | ||
9291a0cd TT |
2503 | /* Read the address map data from the mapped index, and use it to |
2504 | populate the objfile's psymtabs_addrmap. */ | |
2fdf6df6 | 2505 | |
9291a0cd TT |
2506 | static void |
2507 | create_addrmap_from_index (struct objfile *objfile, struct mapped_index *index) | |
2508 | { | |
2509 | const gdb_byte *iter, *end; | |
2510 | struct obstack temp_obstack; | |
2511 | struct addrmap *mutable_map; | |
2512 | struct cleanup *cleanup; | |
2513 | CORE_ADDR baseaddr; | |
2514 | ||
2515 | obstack_init (&temp_obstack); | |
2516 | cleanup = make_cleanup_obstack_free (&temp_obstack); | |
2517 | mutable_map = addrmap_create_mutable (&temp_obstack); | |
2518 | ||
2519 | iter = index->address_table; | |
2520 | end = iter + index->address_table_size; | |
2521 | ||
2522 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
2523 | ||
2524 | while (iter < end) | |
2525 | { | |
2526 | ULONGEST hi, lo, cu_index; | |
2527 | lo = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
2528 | iter += 8; | |
2529 | hi = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
2530 | iter += 8; | |
2531 | cu_index = extract_unsigned_integer (iter, 4, BFD_ENDIAN_LITTLE); | |
2532 | iter += 4; | |
f652bce2 DE |
2533 | |
2534 | if (cu_index < dwarf2_per_objfile->n_comp_units) | |
2535 | { | |
2536 | addrmap_set_empty (mutable_map, lo + baseaddr, hi + baseaddr - 1, | |
2537 | dw2_get_cu (cu_index)); | |
2538 | } | |
2539 | else | |
2540 | { | |
2541 | complaint (&symfile_complaints, | |
2542 | _(".gdb_index address table has invalid CU number %u"), | |
2543 | (unsigned) cu_index); | |
2544 | } | |
9291a0cd TT |
2545 | } |
2546 | ||
2547 | objfile->psymtabs_addrmap = addrmap_create_fixed (mutable_map, | |
2548 | &objfile->objfile_obstack); | |
2549 | do_cleanups (cleanup); | |
2550 | } | |
2551 | ||
59d7bcaf JK |
2552 | /* The hash function for strings in the mapped index. This is the same as |
2553 | SYMBOL_HASH_NEXT, but we keep a separate copy to maintain control over the | |
2554 | implementation. This is necessary because the hash function is tied to the | |
2555 | format of the mapped index file. The hash values do not have to match with | |
559a7a62 JK |
2556 | SYMBOL_HASH_NEXT. |
2557 | ||
2558 | Use INT_MAX for INDEX_VERSION if you generate the current index format. */ | |
2fdf6df6 | 2559 | |
9291a0cd | 2560 | static hashval_t |
559a7a62 | 2561 | mapped_index_string_hash (int index_version, const void *p) |
9291a0cd TT |
2562 | { |
2563 | const unsigned char *str = (const unsigned char *) p; | |
2564 | hashval_t r = 0; | |
2565 | unsigned char c; | |
2566 | ||
2567 | while ((c = *str++) != 0) | |
559a7a62 JK |
2568 | { |
2569 | if (index_version >= 5) | |
2570 | c = tolower (c); | |
2571 | r = r * 67 + c - 113; | |
2572 | } | |
9291a0cd TT |
2573 | |
2574 | return r; | |
2575 | } | |
2576 | ||
2577 | /* Find a slot in the mapped index INDEX for the object named NAME. | |
2578 | If NAME is found, set *VEC_OUT to point to the CU vector in the | |
2579 | constant pool and return 1. If NAME cannot be found, return 0. */ | |
2fdf6df6 | 2580 | |
9291a0cd TT |
2581 | static int |
2582 | find_slot_in_mapped_hash (struct mapped_index *index, const char *name, | |
2583 | offset_type **vec_out) | |
2584 | { | |
0cf03b49 JK |
2585 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
2586 | offset_type hash; | |
9291a0cd | 2587 | offset_type slot, step; |
559a7a62 | 2588 | int (*cmp) (const char *, const char *); |
9291a0cd | 2589 | |
0cf03b49 JK |
2590 | if (current_language->la_language == language_cplus |
2591 | || current_language->la_language == language_java | |
2592 | || current_language->la_language == language_fortran) | |
2593 | { | |
2594 | /* NAME is already canonical. Drop any qualifiers as .gdb_index does | |
2595 | not contain any. */ | |
2596 | const char *paren = strchr (name, '('); | |
2597 | ||
2598 | if (paren) | |
2599 | { | |
2600 | char *dup; | |
2601 | ||
2602 | dup = xmalloc (paren - name + 1); | |
2603 | memcpy (dup, name, paren - name); | |
2604 | dup[paren - name] = 0; | |
2605 | ||
2606 | make_cleanup (xfree, dup); | |
2607 | name = dup; | |
2608 | } | |
2609 | } | |
2610 | ||
559a7a62 | 2611 | /* Index version 4 did not support case insensitive searches. But the |
feea76c2 | 2612 | indices for case insensitive languages are built in lowercase, therefore |
559a7a62 JK |
2613 | simulate our NAME being searched is also lowercased. */ |
2614 | hash = mapped_index_string_hash ((index->version == 4 | |
2615 | && case_sensitivity == case_sensitive_off | |
2616 | ? 5 : index->version), | |
2617 | name); | |
2618 | ||
3876f04e DE |
2619 | slot = hash & (index->symbol_table_slots - 1); |
2620 | step = ((hash * 17) & (index->symbol_table_slots - 1)) | 1; | |
559a7a62 | 2621 | cmp = (case_sensitivity == case_sensitive_on ? strcmp : strcasecmp); |
9291a0cd TT |
2622 | |
2623 | for (;;) | |
2624 | { | |
2625 | /* Convert a slot number to an offset into the table. */ | |
2626 | offset_type i = 2 * slot; | |
2627 | const char *str; | |
3876f04e | 2628 | if (index->symbol_table[i] == 0 && index->symbol_table[i + 1] == 0) |
0cf03b49 JK |
2629 | { |
2630 | do_cleanups (back_to); | |
2631 | return 0; | |
2632 | } | |
9291a0cd | 2633 | |
3876f04e | 2634 | str = index->constant_pool + MAYBE_SWAP (index->symbol_table[i]); |
559a7a62 | 2635 | if (!cmp (name, str)) |
9291a0cd TT |
2636 | { |
2637 | *vec_out = (offset_type *) (index->constant_pool | |
3876f04e | 2638 | + MAYBE_SWAP (index->symbol_table[i + 1])); |
0cf03b49 | 2639 | do_cleanups (back_to); |
9291a0cd TT |
2640 | return 1; |
2641 | } | |
2642 | ||
3876f04e | 2643 | slot = (slot + step) & (index->symbol_table_slots - 1); |
9291a0cd TT |
2644 | } |
2645 | } | |
2646 | ||
2ec9a5e0 TT |
2647 | /* A helper function that reads the .gdb_index from SECTION and fills |
2648 | in MAP. FILENAME is the name of the file containing the section; | |
2649 | it is used for error reporting. DEPRECATED_OK is nonzero if it is | |
2650 | ok to use deprecated sections. | |
2651 | ||
2652 | CU_LIST, CU_LIST_ELEMENTS, TYPES_LIST, and TYPES_LIST_ELEMENTS are | |
2653 | out parameters that are filled in with information about the CU and | |
2654 | TU lists in the section. | |
2655 | ||
2656 | Returns 1 if all went well, 0 otherwise. */ | |
2fdf6df6 | 2657 | |
9291a0cd | 2658 | static int |
2ec9a5e0 TT |
2659 | read_index_from_section (struct objfile *objfile, |
2660 | const char *filename, | |
2661 | int deprecated_ok, | |
2662 | struct dwarf2_section_info *section, | |
2663 | struct mapped_index *map, | |
2664 | const gdb_byte **cu_list, | |
2665 | offset_type *cu_list_elements, | |
2666 | const gdb_byte **types_list, | |
2667 | offset_type *types_list_elements) | |
9291a0cd | 2668 | { |
9291a0cd | 2669 | char *addr; |
2ec9a5e0 | 2670 | offset_type version; |
b3b272e1 | 2671 | offset_type *metadata; |
1fd400ff | 2672 | int i; |
9291a0cd | 2673 | |
2ec9a5e0 | 2674 | if (dwarf2_section_empty_p (section)) |
9291a0cd | 2675 | return 0; |
82430852 JK |
2676 | |
2677 | /* Older elfutils strip versions could keep the section in the main | |
2678 | executable while splitting it for the separate debug info file. */ | |
2ec9a5e0 | 2679 | if ((bfd_get_file_flags (section->asection) & SEC_HAS_CONTENTS) == 0) |
82430852 JK |
2680 | return 0; |
2681 | ||
2ec9a5e0 | 2682 | dwarf2_read_section (objfile, section); |
9291a0cd | 2683 | |
2ec9a5e0 | 2684 | addr = section->buffer; |
9291a0cd | 2685 | /* Version check. */ |
1fd400ff | 2686 | version = MAYBE_SWAP (*(offset_type *) addr); |
987d643c | 2687 | /* Versions earlier than 3 emitted every copy of a psymbol. This |
a6e293d1 | 2688 | causes the index to behave very poorly for certain requests. Version 3 |
831adc1f | 2689 | contained incomplete addrmap. So, it seems better to just ignore such |
481860b3 | 2690 | indices. */ |
831adc1f | 2691 | if (version < 4) |
481860b3 GB |
2692 | { |
2693 | static int warning_printed = 0; | |
2694 | if (!warning_printed) | |
2695 | { | |
2696 | warning (_("Skipping obsolete .gdb_index section in %s."), | |
2ec9a5e0 | 2697 | filename); |
481860b3 GB |
2698 | warning_printed = 1; |
2699 | } | |
2700 | return 0; | |
2701 | } | |
2702 | /* Index version 4 uses a different hash function than index version | |
2703 | 5 and later. | |
2704 | ||
2705 | Versions earlier than 6 did not emit psymbols for inlined | |
2706 | functions. Using these files will cause GDB not to be able to | |
2707 | set breakpoints on inlined functions by name, so we ignore these | |
e615022a DE |
2708 | indices unless the user has done |
2709 | "set use-deprecated-index-sections on". */ | |
2ec9a5e0 | 2710 | if (version < 6 && !deprecated_ok) |
481860b3 GB |
2711 | { |
2712 | static int warning_printed = 0; | |
2713 | if (!warning_printed) | |
2714 | { | |
e615022a DE |
2715 | warning (_("\ |
2716 | Skipping deprecated .gdb_index section in %s.\n\ | |
2717 | Do \"set use-deprecated-index-sections on\" before the file is read\n\ | |
2718 | to use the section anyway."), | |
2ec9a5e0 | 2719 | filename); |
481860b3 GB |
2720 | warning_printed = 1; |
2721 | } | |
2722 | return 0; | |
2723 | } | |
796a7ff8 DE |
2724 | /* Version 7 indices generated by gold refer to the CU for a symbol instead |
2725 | of the TU (for symbols coming from TUs). It's just a performance bug, and | |
2726 | we can't distinguish gdb-generated indices from gold-generated ones, so | |
2727 | nothing to do here. */ | |
2728 | ||
481860b3 | 2729 | /* Indexes with higher version than the one supported by GDB may be no |
594e8718 | 2730 | longer backward compatible. */ |
796a7ff8 | 2731 | if (version > 8) |
594e8718 | 2732 | return 0; |
9291a0cd | 2733 | |
559a7a62 | 2734 | map->version = version; |
2ec9a5e0 | 2735 | map->total_size = section->size; |
9291a0cd TT |
2736 | |
2737 | metadata = (offset_type *) (addr + sizeof (offset_type)); | |
1fd400ff TT |
2738 | |
2739 | i = 0; | |
2ec9a5e0 TT |
2740 | *cu_list = addr + MAYBE_SWAP (metadata[i]); |
2741 | *cu_list_elements = ((MAYBE_SWAP (metadata[i + 1]) - MAYBE_SWAP (metadata[i])) | |
2742 | / 8); | |
1fd400ff TT |
2743 | ++i; |
2744 | ||
2ec9a5e0 TT |
2745 | *types_list = addr + MAYBE_SWAP (metadata[i]); |
2746 | *types_list_elements = ((MAYBE_SWAP (metadata[i + 1]) | |
2747 | - MAYBE_SWAP (metadata[i])) | |
2748 | / 8); | |
987d643c | 2749 | ++i; |
1fd400ff TT |
2750 | |
2751 | map->address_table = addr + MAYBE_SWAP (metadata[i]); | |
2752 | map->address_table_size = (MAYBE_SWAP (metadata[i + 1]) | |
2753 | - MAYBE_SWAP (metadata[i])); | |
2754 | ++i; | |
2755 | ||
3876f04e DE |
2756 | map->symbol_table = (offset_type *) (addr + MAYBE_SWAP (metadata[i])); |
2757 | map->symbol_table_slots = ((MAYBE_SWAP (metadata[i + 1]) | |
2758 | - MAYBE_SWAP (metadata[i])) | |
2759 | / (2 * sizeof (offset_type))); | |
1fd400ff | 2760 | ++i; |
9291a0cd | 2761 | |
1fd400ff TT |
2762 | map->constant_pool = addr + MAYBE_SWAP (metadata[i]); |
2763 | ||
2ec9a5e0 TT |
2764 | return 1; |
2765 | } | |
2766 | ||
2767 | ||
2768 | /* Read the index file. If everything went ok, initialize the "quick" | |
2769 | elements of all the CUs and return 1. Otherwise, return 0. */ | |
2770 | ||
2771 | static int | |
2772 | dwarf2_read_index (struct objfile *objfile) | |
2773 | { | |
2774 | struct mapped_index local_map, *map; | |
2775 | const gdb_byte *cu_list, *types_list, *dwz_list = NULL; | |
2776 | offset_type cu_list_elements, types_list_elements, dwz_list_elements = 0; | |
2777 | ||
2778 | if (!read_index_from_section (objfile, objfile->name, | |
2779 | use_deprecated_index_sections, | |
2780 | &dwarf2_per_objfile->gdb_index, &local_map, | |
2781 | &cu_list, &cu_list_elements, | |
2782 | &types_list, &types_list_elements)) | |
2783 | return 0; | |
2784 | ||
0fefef59 | 2785 | /* Don't use the index if it's empty. */ |
2ec9a5e0 | 2786 | if (local_map.symbol_table_slots == 0) |
0fefef59 DE |
2787 | return 0; |
2788 | ||
2ec9a5e0 TT |
2789 | /* If there is a .dwz file, read it so we can get its CU list as |
2790 | well. */ | |
2791 | if (bfd_get_section_by_name (objfile->obfd, ".gnu_debugaltlink") != NULL) | |
2792 | { | |
2793 | struct dwz_file *dwz = dwarf2_get_dwz_file (); | |
2794 | struct mapped_index dwz_map; | |
2795 | const gdb_byte *dwz_types_ignore; | |
2796 | offset_type dwz_types_elements_ignore; | |
2797 | ||
2798 | if (!read_index_from_section (objfile, bfd_get_filename (dwz->dwz_bfd), | |
2799 | 1, | |
2800 | &dwz->gdb_index, &dwz_map, | |
2801 | &dwz_list, &dwz_list_elements, | |
2802 | &dwz_types_ignore, | |
2803 | &dwz_types_elements_ignore)) | |
2804 | { | |
2805 | warning (_("could not read '.gdb_index' section from %s; skipping"), | |
2806 | bfd_get_filename (dwz->dwz_bfd)); | |
2807 | return 0; | |
2808 | } | |
2809 | } | |
2810 | ||
74a0d9f6 JK |
2811 | create_cus_from_index (objfile, cu_list, cu_list_elements, dwz_list, |
2812 | dwz_list_elements); | |
1fd400ff | 2813 | |
8b70b953 TT |
2814 | if (types_list_elements) |
2815 | { | |
2816 | struct dwarf2_section_info *section; | |
2817 | ||
2818 | /* We can only handle a single .debug_types when we have an | |
2819 | index. */ | |
2820 | if (VEC_length (dwarf2_section_info_def, dwarf2_per_objfile->types) != 1) | |
2821 | return 0; | |
2822 | ||
2823 | section = VEC_index (dwarf2_section_info_def, | |
2824 | dwarf2_per_objfile->types, 0); | |
2825 | ||
74a0d9f6 JK |
2826 | create_signatured_type_table_from_index (objfile, section, types_list, |
2827 | types_list_elements); | |
8b70b953 | 2828 | } |
9291a0cd | 2829 | |
2ec9a5e0 TT |
2830 | create_addrmap_from_index (objfile, &local_map); |
2831 | ||
2832 | map = obstack_alloc (&objfile->objfile_obstack, sizeof (struct mapped_index)); | |
2833 | *map = local_map; | |
9291a0cd TT |
2834 | |
2835 | dwarf2_per_objfile->index_table = map; | |
2836 | dwarf2_per_objfile->using_index = 1; | |
7b9f3c50 DE |
2837 | dwarf2_per_objfile->quick_file_names_table = |
2838 | create_quick_file_names_table (dwarf2_per_objfile->n_comp_units); | |
9291a0cd TT |
2839 | |
2840 | return 1; | |
2841 | } | |
2842 | ||
2843 | /* A helper for the "quick" functions which sets the global | |
2844 | dwarf2_per_objfile according to OBJFILE. */ | |
2fdf6df6 | 2845 | |
9291a0cd TT |
2846 | static void |
2847 | dw2_setup (struct objfile *objfile) | |
2848 | { | |
2849 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); | |
2850 | gdb_assert (dwarf2_per_objfile); | |
2851 | } | |
2852 | ||
dee91e82 | 2853 | /* die_reader_func for dw2_get_file_names. */ |
2fdf6df6 | 2854 | |
dee91e82 DE |
2855 | static void |
2856 | dw2_get_file_names_reader (const struct die_reader_specs *reader, | |
2857 | gdb_byte *info_ptr, | |
2858 | struct die_info *comp_unit_die, | |
2859 | int has_children, | |
2860 | void *data) | |
9291a0cd | 2861 | { |
dee91e82 DE |
2862 | struct dwarf2_cu *cu = reader->cu; |
2863 | struct dwarf2_per_cu_data *this_cu = cu->per_cu; | |
2864 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
094b34ac | 2865 | struct dwarf2_per_cu_data *lh_cu; |
7b9f3c50 | 2866 | struct line_header *lh; |
9291a0cd | 2867 | struct attribute *attr; |
dee91e82 | 2868 | int i; |
15d034d0 | 2869 | const char *name, *comp_dir; |
7b9f3c50 DE |
2870 | void **slot; |
2871 | struct quick_file_names *qfn; | |
2872 | unsigned int line_offset; | |
9291a0cd | 2873 | |
07261596 TT |
2874 | /* Our callers never want to match partial units -- instead they |
2875 | will match the enclosing full CU. */ | |
2876 | if (comp_unit_die->tag == DW_TAG_partial_unit) | |
2877 | { | |
2878 | this_cu->v.quick->no_file_data = 1; | |
2879 | return; | |
2880 | } | |
2881 | ||
094b34ac DE |
2882 | /* If we're reading the line header for TUs, store it in the "per_cu" |
2883 | for tu_group. */ | |
2884 | if (this_cu->is_debug_types) | |
2885 | { | |
2886 | struct type_unit_group *tu_group = data; | |
2887 | ||
2888 | gdb_assert (tu_group != NULL); | |
2889 | lh_cu = &tu_group->per_cu; | |
2890 | } | |
2891 | else | |
2892 | lh_cu = this_cu; | |
2893 | ||
7b9f3c50 DE |
2894 | lh = NULL; |
2895 | slot = NULL; | |
2896 | line_offset = 0; | |
dee91e82 DE |
2897 | |
2898 | attr = dwarf2_attr (comp_unit_die, DW_AT_stmt_list, cu); | |
9291a0cd TT |
2899 | if (attr) |
2900 | { | |
7b9f3c50 DE |
2901 | struct quick_file_names find_entry; |
2902 | ||
2903 | line_offset = DW_UNSND (attr); | |
2904 | ||
2905 | /* We may have already read in this line header (TU line header sharing). | |
2906 | If we have we're done. */ | |
094b34ac DE |
2907 | find_entry.hash.dwo_unit = cu->dwo_unit; |
2908 | find_entry.hash.line_offset.sect_off = line_offset; | |
7b9f3c50 DE |
2909 | slot = htab_find_slot (dwarf2_per_objfile->quick_file_names_table, |
2910 | &find_entry, INSERT); | |
2911 | if (*slot != NULL) | |
2912 | { | |
094b34ac | 2913 | lh_cu->v.quick->file_names = *slot; |
dee91e82 | 2914 | return; |
7b9f3c50 DE |
2915 | } |
2916 | ||
3019eac3 | 2917 | lh = dwarf_decode_line_header (line_offset, cu); |
9291a0cd TT |
2918 | } |
2919 | if (lh == NULL) | |
2920 | { | |
094b34ac | 2921 | lh_cu->v.quick->no_file_data = 1; |
dee91e82 | 2922 | return; |
9291a0cd TT |
2923 | } |
2924 | ||
7b9f3c50 | 2925 | qfn = obstack_alloc (&objfile->objfile_obstack, sizeof (*qfn)); |
094b34ac DE |
2926 | qfn->hash.dwo_unit = cu->dwo_unit; |
2927 | qfn->hash.line_offset.sect_off = line_offset; | |
7b9f3c50 DE |
2928 | gdb_assert (slot != NULL); |
2929 | *slot = qfn; | |
9291a0cd | 2930 | |
dee91e82 | 2931 | find_file_and_directory (comp_unit_die, cu, &name, &comp_dir); |
9291a0cd | 2932 | |
7b9f3c50 DE |
2933 | qfn->num_file_names = lh->num_file_names; |
2934 | qfn->file_names = obstack_alloc (&objfile->objfile_obstack, | |
2935 | lh->num_file_names * sizeof (char *)); | |
9291a0cd | 2936 | for (i = 0; i < lh->num_file_names; ++i) |
7b9f3c50 DE |
2937 | qfn->file_names[i] = file_full_name (i + 1, lh, comp_dir); |
2938 | qfn->real_names = NULL; | |
9291a0cd | 2939 | |
7b9f3c50 | 2940 | free_line_header (lh); |
7b9f3c50 | 2941 | |
094b34ac | 2942 | lh_cu->v.quick->file_names = qfn; |
dee91e82 DE |
2943 | } |
2944 | ||
2945 | /* A helper for the "quick" functions which attempts to read the line | |
2946 | table for THIS_CU. */ | |
2947 | ||
2948 | static struct quick_file_names * | |
e4a48d9d | 2949 | dw2_get_file_names (struct dwarf2_per_cu_data *this_cu) |
dee91e82 | 2950 | { |
f4dc4d17 DE |
2951 | /* For TUs this should only be called on the parent group. */ |
2952 | if (this_cu->is_debug_types) | |
2953 | gdb_assert (IS_TYPE_UNIT_GROUP (this_cu)); | |
2954 | ||
dee91e82 DE |
2955 | if (this_cu->v.quick->file_names != NULL) |
2956 | return this_cu->v.quick->file_names; | |
2957 | /* If we know there is no line data, no point in looking again. */ | |
2958 | if (this_cu->v.quick->no_file_data) | |
2959 | return NULL; | |
2960 | ||
3019eac3 DE |
2961 | /* If DWO files are in use, we can still find the DW_AT_stmt_list attribute |
2962 | in the stub for CUs, there's is no need to lookup the DWO file. | |
2963 | However, that's not the case for TUs where DW_AT_stmt_list lives in the | |
2964 | DWO file. */ | |
2965 | if (this_cu->is_debug_types) | |
094b34ac | 2966 | { |
796a7ff8 | 2967 | struct type_unit_group *tu_group = this_cu->type_unit_group; |
094b34ac DE |
2968 | |
2969 | init_cutu_and_read_dies (tu_group->t.first_tu, NULL, 0, 0, | |
2970 | dw2_get_file_names_reader, tu_group); | |
2971 | } | |
3019eac3 DE |
2972 | else |
2973 | init_cutu_and_read_dies_simple (this_cu, dw2_get_file_names_reader, NULL); | |
dee91e82 DE |
2974 | |
2975 | if (this_cu->v.quick->no_file_data) | |
2976 | return NULL; | |
2977 | return this_cu->v.quick->file_names; | |
9291a0cd TT |
2978 | } |
2979 | ||
2980 | /* A helper for the "quick" functions which computes and caches the | |
7b9f3c50 | 2981 | real path for a given file name from the line table. */ |
2fdf6df6 | 2982 | |
9291a0cd | 2983 | static const char * |
7b9f3c50 DE |
2984 | dw2_get_real_path (struct objfile *objfile, |
2985 | struct quick_file_names *qfn, int index) | |
9291a0cd | 2986 | { |
7b9f3c50 DE |
2987 | if (qfn->real_names == NULL) |
2988 | qfn->real_names = OBSTACK_CALLOC (&objfile->objfile_obstack, | |
2989 | qfn->num_file_names, sizeof (char *)); | |
9291a0cd | 2990 | |
7b9f3c50 DE |
2991 | if (qfn->real_names[index] == NULL) |
2992 | qfn->real_names[index] = gdb_realpath (qfn->file_names[index]); | |
9291a0cd | 2993 | |
7b9f3c50 | 2994 | return qfn->real_names[index]; |
9291a0cd TT |
2995 | } |
2996 | ||
2997 | static struct symtab * | |
2998 | dw2_find_last_source_symtab (struct objfile *objfile) | |
2999 | { | |
3000 | int index; | |
ae2de4f8 | 3001 | |
9291a0cd TT |
3002 | dw2_setup (objfile); |
3003 | index = dwarf2_per_objfile->n_comp_units - 1; | |
a0f42c21 | 3004 | return dw2_instantiate_symtab (dw2_get_cu (index)); |
9291a0cd TT |
3005 | } |
3006 | ||
7b9f3c50 DE |
3007 | /* Traversal function for dw2_forget_cached_source_info. */ |
3008 | ||
3009 | static int | |
3010 | dw2_free_cached_file_names (void **slot, void *info) | |
9291a0cd | 3011 | { |
7b9f3c50 | 3012 | struct quick_file_names *file_data = (struct quick_file_names *) *slot; |
9291a0cd | 3013 | |
7b9f3c50 | 3014 | if (file_data->real_names) |
9291a0cd | 3015 | { |
7b9f3c50 | 3016 | int i; |
9291a0cd | 3017 | |
7b9f3c50 | 3018 | for (i = 0; i < file_data->num_file_names; ++i) |
9291a0cd | 3019 | { |
7b9f3c50 DE |
3020 | xfree ((void*) file_data->real_names[i]); |
3021 | file_data->real_names[i] = NULL; | |
9291a0cd TT |
3022 | } |
3023 | } | |
7b9f3c50 DE |
3024 | |
3025 | return 1; | |
3026 | } | |
3027 | ||
3028 | static void | |
3029 | dw2_forget_cached_source_info (struct objfile *objfile) | |
3030 | { | |
3031 | dw2_setup (objfile); | |
3032 | ||
3033 | htab_traverse_noresize (dwarf2_per_objfile->quick_file_names_table, | |
3034 | dw2_free_cached_file_names, NULL); | |
9291a0cd TT |
3035 | } |
3036 | ||
f8eba3c6 TT |
3037 | /* Helper function for dw2_map_symtabs_matching_filename that expands |
3038 | the symtabs and calls the iterator. */ | |
3039 | ||
3040 | static int | |
3041 | dw2_map_expand_apply (struct objfile *objfile, | |
3042 | struct dwarf2_per_cu_data *per_cu, | |
f5b95b50 | 3043 | const char *name, const char *real_path, |
f8eba3c6 TT |
3044 | int (*callback) (struct symtab *, void *), |
3045 | void *data) | |
3046 | { | |
3047 | struct symtab *last_made = objfile->symtabs; | |
3048 | ||
3049 | /* Don't visit already-expanded CUs. */ | |
3050 | if (per_cu->v.quick->symtab) | |
3051 | return 0; | |
3052 | ||
3053 | /* This may expand more than one symtab, and we want to iterate over | |
3054 | all of them. */ | |
a0f42c21 | 3055 | dw2_instantiate_symtab (per_cu); |
f8eba3c6 | 3056 | |
f5b95b50 | 3057 | return iterate_over_some_symtabs (name, real_path, callback, data, |
f8eba3c6 TT |
3058 | objfile->symtabs, last_made); |
3059 | } | |
3060 | ||
3061 | /* Implementation of the map_symtabs_matching_filename method. */ | |
3062 | ||
9291a0cd | 3063 | static int |
f8eba3c6 | 3064 | dw2_map_symtabs_matching_filename (struct objfile *objfile, const char *name, |
f5b95b50 | 3065 | const char *real_path, |
f8eba3c6 TT |
3066 | int (*callback) (struct symtab *, void *), |
3067 | void *data) | |
9291a0cd TT |
3068 | { |
3069 | int i; | |
c011a4f4 | 3070 | const char *name_basename = lbasename (name); |
9291a0cd TT |
3071 | |
3072 | dw2_setup (objfile); | |
ae2de4f8 | 3073 | |
848e3e78 DE |
3074 | /* The rule is CUs specify all the files, including those used by |
3075 | any TU, so there's no need to scan TUs here. */ | |
f4dc4d17 | 3076 | |
848e3e78 | 3077 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
9291a0cd TT |
3078 | { |
3079 | int j; | |
f4dc4d17 | 3080 | struct dwarf2_per_cu_data *per_cu = dw2_get_primary_cu (i); |
7b9f3c50 | 3081 | struct quick_file_names *file_data; |
9291a0cd | 3082 | |
3d7bb9d9 | 3083 | /* We only need to look at symtabs not already expanded. */ |
e254ef6a | 3084 | if (per_cu->v.quick->symtab) |
9291a0cd TT |
3085 | continue; |
3086 | ||
e4a48d9d | 3087 | file_data = dw2_get_file_names (per_cu); |
7b9f3c50 | 3088 | if (file_data == NULL) |
9291a0cd TT |
3089 | continue; |
3090 | ||
7b9f3c50 | 3091 | for (j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 3092 | { |
7b9f3c50 | 3093 | const char *this_name = file_data->file_names[j]; |
da235a7c | 3094 | const char *this_real_name; |
9291a0cd | 3095 | |
af529f8f | 3096 | if (compare_filenames_for_search (this_name, name)) |
9291a0cd | 3097 | { |
f5b95b50 | 3098 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
f8eba3c6 TT |
3099 | callback, data)) |
3100 | return 1; | |
288e77a7 | 3101 | continue; |
4aac40c8 | 3102 | } |
9291a0cd | 3103 | |
c011a4f4 DE |
3104 | /* Before we invoke realpath, which can get expensive when many |
3105 | files are involved, do a quick comparison of the basenames. */ | |
3106 | if (! basenames_may_differ | |
3107 | && FILENAME_CMP (lbasename (this_name), name_basename) != 0) | |
3108 | continue; | |
3109 | ||
da235a7c JK |
3110 | this_real_name = dw2_get_real_path (objfile, file_data, j); |
3111 | if (compare_filenames_for_search (this_real_name, name)) | |
9291a0cd | 3112 | { |
da235a7c JK |
3113 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
3114 | callback, data)) | |
3115 | return 1; | |
288e77a7 | 3116 | continue; |
da235a7c | 3117 | } |
9291a0cd | 3118 | |
da235a7c JK |
3119 | if (real_path != NULL) |
3120 | { | |
af529f8f JK |
3121 | gdb_assert (IS_ABSOLUTE_PATH (real_path)); |
3122 | gdb_assert (IS_ABSOLUTE_PATH (name)); | |
7b9f3c50 | 3123 | if (this_real_name != NULL |
af529f8f | 3124 | && FILENAME_CMP (real_path, this_real_name) == 0) |
9291a0cd | 3125 | { |
f5b95b50 | 3126 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
f8eba3c6 TT |
3127 | callback, data)) |
3128 | return 1; | |
288e77a7 | 3129 | continue; |
9291a0cd TT |
3130 | } |
3131 | } | |
3132 | } | |
3133 | } | |
3134 | ||
9291a0cd TT |
3135 | return 0; |
3136 | } | |
3137 | ||
da51c347 DE |
3138 | /* Struct used to manage iterating over all CUs looking for a symbol. */ |
3139 | ||
3140 | struct dw2_symtab_iterator | |
9291a0cd | 3141 | { |
da51c347 DE |
3142 | /* The internalized form of .gdb_index. */ |
3143 | struct mapped_index *index; | |
3144 | /* If non-zero, only look for symbols that match BLOCK_INDEX. */ | |
3145 | int want_specific_block; | |
3146 | /* One of GLOBAL_BLOCK or STATIC_BLOCK. | |
3147 | Unused if !WANT_SPECIFIC_BLOCK. */ | |
3148 | int block_index; | |
3149 | /* The kind of symbol we're looking for. */ | |
3150 | domain_enum domain; | |
3151 | /* The list of CUs from the index entry of the symbol, | |
3152 | or NULL if not found. */ | |
3153 | offset_type *vec; | |
3154 | /* The next element in VEC to look at. */ | |
3155 | int next; | |
3156 | /* The number of elements in VEC, or zero if there is no match. */ | |
3157 | int length; | |
3158 | }; | |
9291a0cd | 3159 | |
da51c347 DE |
3160 | /* Initialize the index symtab iterator ITER. |
3161 | If WANT_SPECIFIC_BLOCK is non-zero, only look for symbols | |
3162 | in block BLOCK_INDEX. Otherwise BLOCK_INDEX is ignored. */ | |
2fdf6df6 | 3163 | |
9291a0cd | 3164 | static void |
da51c347 DE |
3165 | dw2_symtab_iter_init (struct dw2_symtab_iterator *iter, |
3166 | struct mapped_index *index, | |
3167 | int want_specific_block, | |
3168 | int block_index, | |
3169 | domain_enum domain, | |
3170 | const char *name) | |
3171 | { | |
3172 | iter->index = index; | |
3173 | iter->want_specific_block = want_specific_block; | |
3174 | iter->block_index = block_index; | |
3175 | iter->domain = domain; | |
3176 | iter->next = 0; | |
3177 | ||
3178 | if (find_slot_in_mapped_hash (index, name, &iter->vec)) | |
3179 | iter->length = MAYBE_SWAP (*iter->vec); | |
3180 | else | |
3181 | { | |
3182 | iter->vec = NULL; | |
3183 | iter->length = 0; | |
3184 | } | |
3185 | } | |
3186 | ||
3187 | /* Return the next matching CU or NULL if there are no more. */ | |
3188 | ||
3189 | static struct dwarf2_per_cu_data * | |
3190 | dw2_symtab_iter_next (struct dw2_symtab_iterator *iter) | |
3191 | { | |
3192 | for ( ; iter->next < iter->length; ++iter->next) | |
3193 | { | |
3194 | offset_type cu_index_and_attrs = | |
3195 | MAYBE_SWAP (iter->vec[iter->next + 1]); | |
3196 | offset_type cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
3197 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (cu_index); | |
3198 | int want_static = iter->block_index != GLOBAL_BLOCK; | |
3199 | /* This value is only valid for index versions >= 7. */ | |
3200 | int is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu_index_and_attrs); | |
3201 | gdb_index_symbol_kind symbol_kind = | |
3202 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
3203 | /* Only check the symbol attributes if they're present. | |
3204 | Indices prior to version 7 don't record them, | |
3205 | and indices >= 7 may elide them for certain symbols | |
3206 | (gold does this). */ | |
3207 | int attrs_valid = | |
3208 | (iter->index->version >= 7 | |
3209 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE); | |
3210 | ||
3211 | /* Skip if already read in. */ | |
3212 | if (per_cu->v.quick->symtab) | |
3213 | continue; | |
3214 | ||
3215 | if (attrs_valid | |
3216 | && iter->want_specific_block | |
3217 | && want_static != is_static) | |
3218 | continue; | |
3219 | ||
3220 | /* Only check the symbol's kind if it has one. */ | |
3221 | if (attrs_valid) | |
3222 | { | |
3223 | switch (iter->domain) | |
3224 | { | |
3225 | case VAR_DOMAIN: | |
3226 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE | |
3227 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION | |
3228 | /* Some types are also in VAR_DOMAIN. */ | |
3229 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
3230 | continue; | |
3231 | break; | |
3232 | case STRUCT_DOMAIN: | |
3233 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
3234 | continue; | |
3235 | break; | |
3236 | case LABEL_DOMAIN: | |
3237 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
3238 | continue; | |
3239 | break; | |
3240 | default: | |
3241 | break; | |
3242 | } | |
3243 | } | |
3244 | ||
3245 | ++iter->next; | |
3246 | return per_cu; | |
3247 | } | |
3248 | ||
3249 | return NULL; | |
3250 | } | |
3251 | ||
3252 | static struct symtab * | |
3253 | dw2_lookup_symbol (struct objfile *objfile, int block_index, | |
3254 | const char *name, domain_enum domain) | |
9291a0cd | 3255 | { |
da51c347 | 3256 | struct symtab *stab_best = NULL; |
156942c7 DE |
3257 | struct mapped_index *index; |
3258 | ||
9291a0cd TT |
3259 | dw2_setup (objfile); |
3260 | ||
156942c7 DE |
3261 | index = dwarf2_per_objfile->index_table; |
3262 | ||
da51c347 | 3263 | /* index is NULL if OBJF_READNOW. */ |
156942c7 | 3264 | if (index) |
9291a0cd | 3265 | { |
da51c347 DE |
3266 | struct dw2_symtab_iterator iter; |
3267 | struct dwarf2_per_cu_data *per_cu; | |
3268 | ||
3269 | dw2_symtab_iter_init (&iter, index, 1, block_index, domain, name); | |
9291a0cd | 3270 | |
da51c347 | 3271 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) |
9291a0cd | 3272 | { |
da51c347 DE |
3273 | struct symbol *sym = NULL; |
3274 | struct symtab *stab = dw2_instantiate_symtab (per_cu); | |
3275 | ||
3276 | /* Some caution must be observed with overloaded functions | |
3277 | and methods, since the index will not contain any overload | |
3278 | information (but NAME might contain it). */ | |
3279 | if (stab->primary) | |
9291a0cd | 3280 | { |
da51c347 DE |
3281 | struct blockvector *bv = BLOCKVECTOR (stab); |
3282 | struct block *block = BLOCKVECTOR_BLOCK (bv, block_index); | |
156942c7 | 3283 | |
da51c347 DE |
3284 | sym = lookup_block_symbol (block, name, domain); |
3285 | } | |
1fd400ff | 3286 | |
da51c347 DE |
3287 | if (sym && strcmp_iw (SYMBOL_SEARCH_NAME (sym), name) == 0) |
3288 | { | |
3289 | if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym))) | |
3290 | return stab; | |
3291 | ||
3292 | stab_best = stab; | |
9291a0cd | 3293 | } |
da51c347 DE |
3294 | |
3295 | /* Keep looking through other CUs. */ | |
9291a0cd TT |
3296 | } |
3297 | } | |
9291a0cd | 3298 | |
da51c347 | 3299 | return stab_best; |
9291a0cd TT |
3300 | } |
3301 | ||
3302 | static void | |
3303 | dw2_print_stats (struct objfile *objfile) | |
3304 | { | |
e4a48d9d | 3305 | int i, total, count; |
9291a0cd TT |
3306 | |
3307 | dw2_setup (objfile); | |
e4a48d9d | 3308 | total = dwarf2_per_objfile->n_comp_units + dwarf2_per_objfile->n_type_units; |
9291a0cd | 3309 | count = 0; |
e4a48d9d | 3310 | for (i = 0; i < total; ++i) |
9291a0cd | 3311 | { |
e254ef6a | 3312 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
9291a0cd | 3313 | |
e254ef6a | 3314 | if (!per_cu->v.quick->symtab) |
9291a0cd TT |
3315 | ++count; |
3316 | } | |
e4a48d9d | 3317 | printf_filtered (_(" Number of read CUs: %d\n"), total - count); |
9291a0cd TT |
3318 | printf_filtered (_(" Number of unread CUs: %d\n"), count); |
3319 | } | |
3320 | ||
3321 | static void | |
3322 | dw2_dump (struct objfile *objfile) | |
3323 | { | |
3324 | /* Nothing worth printing. */ | |
3325 | } | |
3326 | ||
3327 | static void | |
3328 | dw2_relocate (struct objfile *objfile, struct section_offsets *new_offsets, | |
3329 | struct section_offsets *delta) | |
3330 | { | |
3331 | /* There's nothing to relocate here. */ | |
3332 | } | |
3333 | ||
3334 | static void | |
3335 | dw2_expand_symtabs_for_function (struct objfile *objfile, | |
3336 | const char *func_name) | |
3337 | { | |
da51c347 DE |
3338 | struct mapped_index *index; |
3339 | ||
3340 | dw2_setup (objfile); | |
3341 | ||
3342 | index = dwarf2_per_objfile->index_table; | |
3343 | ||
3344 | /* index is NULL if OBJF_READNOW. */ | |
3345 | if (index) | |
3346 | { | |
3347 | struct dw2_symtab_iterator iter; | |
3348 | struct dwarf2_per_cu_data *per_cu; | |
3349 | ||
3350 | /* Note: It doesn't matter what we pass for block_index here. */ | |
3351 | dw2_symtab_iter_init (&iter, index, 0, GLOBAL_BLOCK, VAR_DOMAIN, | |
3352 | func_name); | |
3353 | ||
3354 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) | |
3355 | dw2_instantiate_symtab (per_cu); | |
3356 | } | |
9291a0cd TT |
3357 | } |
3358 | ||
3359 | static void | |
3360 | dw2_expand_all_symtabs (struct objfile *objfile) | |
3361 | { | |
3362 | int i; | |
3363 | ||
3364 | dw2_setup (objfile); | |
1fd400ff TT |
3365 | |
3366 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units | |
d467dd73 | 3367 | + dwarf2_per_objfile->n_type_units); ++i) |
9291a0cd | 3368 | { |
e254ef6a | 3369 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
9291a0cd | 3370 | |
a0f42c21 | 3371 | dw2_instantiate_symtab (per_cu); |
9291a0cd TT |
3372 | } |
3373 | } | |
3374 | ||
3375 | static void | |
652a8996 JK |
3376 | dw2_expand_symtabs_with_fullname (struct objfile *objfile, |
3377 | const char *fullname) | |
9291a0cd TT |
3378 | { |
3379 | int i; | |
3380 | ||
3381 | dw2_setup (objfile); | |
d4637a04 DE |
3382 | |
3383 | /* We don't need to consider type units here. | |
3384 | This is only called for examining code, e.g. expand_line_sal. | |
3385 | There can be an order of magnitude (or more) more type units | |
3386 | than comp units, and we avoid them if we can. */ | |
3387 | ||
3388 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) | |
9291a0cd TT |
3389 | { |
3390 | int j; | |
e254ef6a | 3391 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
7b9f3c50 | 3392 | struct quick_file_names *file_data; |
9291a0cd | 3393 | |
3d7bb9d9 | 3394 | /* We only need to look at symtabs not already expanded. */ |
e254ef6a | 3395 | if (per_cu->v.quick->symtab) |
9291a0cd TT |
3396 | continue; |
3397 | ||
e4a48d9d | 3398 | file_data = dw2_get_file_names (per_cu); |
7b9f3c50 | 3399 | if (file_data == NULL) |
9291a0cd TT |
3400 | continue; |
3401 | ||
7b9f3c50 | 3402 | for (j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 3403 | { |
652a8996 JK |
3404 | const char *this_fullname = file_data->file_names[j]; |
3405 | ||
3406 | if (filename_cmp (this_fullname, fullname) == 0) | |
9291a0cd | 3407 | { |
a0f42c21 | 3408 | dw2_instantiate_symtab (per_cu); |
9291a0cd TT |
3409 | break; |
3410 | } | |
3411 | } | |
3412 | } | |
3413 | } | |
3414 | ||
356d9f9d TT |
3415 | /* A helper function for dw2_find_symbol_file that finds the primary |
3416 | file name for a given CU. This is a die_reader_func. */ | |
3417 | ||
3418 | static void | |
3419 | dw2_get_primary_filename_reader (const struct die_reader_specs *reader, | |
3420 | gdb_byte *info_ptr, | |
3421 | struct die_info *comp_unit_die, | |
3422 | int has_children, | |
3423 | void *data) | |
3424 | { | |
3425 | const char **result_ptr = data; | |
3426 | struct dwarf2_cu *cu = reader->cu; | |
3427 | struct attribute *attr; | |
3428 | ||
3429 | attr = dwarf2_attr (comp_unit_die, DW_AT_name, cu); | |
3430 | if (attr == NULL) | |
3431 | *result_ptr = NULL; | |
3432 | else | |
3433 | *result_ptr = DW_STRING (attr); | |
3434 | } | |
3435 | ||
dd786858 | 3436 | static const char * |
9291a0cd TT |
3437 | dw2_find_symbol_file (struct objfile *objfile, const char *name) |
3438 | { | |
e254ef6a | 3439 | struct dwarf2_per_cu_data *per_cu; |
9291a0cd | 3440 | offset_type *vec; |
356d9f9d | 3441 | const char *filename; |
9291a0cd TT |
3442 | |
3443 | dw2_setup (objfile); | |
3444 | ||
ae2de4f8 | 3445 | /* index_table is NULL if OBJF_READNOW. */ |
9291a0cd | 3446 | if (!dwarf2_per_objfile->index_table) |
96408a79 SA |
3447 | { |
3448 | struct symtab *s; | |
3449 | ||
d790cf0a DE |
3450 | ALL_OBJFILE_PRIMARY_SYMTABS (objfile, s) |
3451 | { | |
3452 | struct blockvector *bv = BLOCKVECTOR (s); | |
3453 | const struct block *block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); | |
3454 | struct symbol *sym = lookup_block_symbol (block, name, VAR_DOMAIN); | |
3455 | ||
3456 | if (sym) | |
652a8996 JK |
3457 | { |
3458 | /* Only file extension of returned filename is recognized. */ | |
3459 | return SYMBOL_SYMTAB (sym)->filename; | |
3460 | } | |
d790cf0a | 3461 | } |
96408a79 SA |
3462 | return NULL; |
3463 | } | |
9291a0cd TT |
3464 | |
3465 | if (!find_slot_in_mapped_hash (dwarf2_per_objfile->index_table, | |
3466 | name, &vec)) | |
3467 | return NULL; | |
3468 | ||
3469 | /* Note that this just looks at the very first one named NAME -- but | |
3470 | actually we are looking for a function. find_main_filename | |
3471 | should be rewritten so that it doesn't require a custom hook. It | |
3472 | could just use the ordinary symbol tables. */ | |
3473 | /* vec[0] is the length, which must always be >0. */ | |
156942c7 | 3474 | per_cu = dw2_get_cu (GDB_INDEX_CU_VALUE (MAYBE_SWAP (vec[1]))); |
9291a0cd | 3475 | |
356d9f9d | 3476 | if (per_cu->v.quick->symtab != NULL) |
652a8996 JK |
3477 | { |
3478 | /* Only file extension of returned filename is recognized. */ | |
3479 | return per_cu->v.quick->symtab->filename; | |
3480 | } | |
356d9f9d | 3481 | |
f4dc4d17 DE |
3482 | init_cutu_and_read_dies (per_cu, NULL, 0, 0, |
3483 | dw2_get_primary_filename_reader, &filename); | |
9291a0cd | 3484 | |
652a8996 | 3485 | /* Only file extension of returned filename is recognized. */ |
356d9f9d | 3486 | return filename; |
9291a0cd TT |
3487 | } |
3488 | ||
3489 | static void | |
40658b94 PH |
3490 | dw2_map_matching_symbols (const char * name, domain_enum namespace, |
3491 | struct objfile *objfile, int global, | |
3492 | int (*callback) (struct block *, | |
3493 | struct symbol *, void *), | |
2edb89d3 JK |
3494 | void *data, symbol_compare_ftype *match, |
3495 | symbol_compare_ftype *ordered_compare) | |
9291a0cd | 3496 | { |
40658b94 | 3497 | /* Currently unimplemented; used for Ada. The function can be called if the |
a9e6a4bb JK |
3498 | current language is Ada for a non-Ada objfile using GNU index. As Ada |
3499 | does not look for non-Ada symbols this function should just return. */ | |
9291a0cd TT |
3500 | } |
3501 | ||
3502 | static void | |
f8eba3c6 TT |
3503 | dw2_expand_symtabs_matching |
3504 | (struct objfile *objfile, | |
fbd9ab74 | 3505 | int (*file_matcher) (const char *, void *, int basenames), |
e078317b | 3506 | int (*name_matcher) (const char *, void *), |
f8eba3c6 TT |
3507 | enum search_domain kind, |
3508 | void *data) | |
9291a0cd TT |
3509 | { |
3510 | int i; | |
3511 | offset_type iter; | |
4b5246aa | 3512 | struct mapped_index *index; |
9291a0cd TT |
3513 | |
3514 | dw2_setup (objfile); | |
ae2de4f8 DE |
3515 | |
3516 | /* index_table is NULL if OBJF_READNOW. */ | |
9291a0cd TT |
3517 | if (!dwarf2_per_objfile->index_table) |
3518 | return; | |
4b5246aa | 3519 | index = dwarf2_per_objfile->index_table; |
9291a0cd | 3520 | |
7b08b9eb | 3521 | if (file_matcher != NULL) |
24c79950 TT |
3522 | { |
3523 | struct cleanup *cleanup; | |
3524 | htab_t visited_found, visited_not_found; | |
3525 | ||
3526 | visited_found = htab_create_alloc (10, | |
3527 | htab_hash_pointer, htab_eq_pointer, | |
3528 | NULL, xcalloc, xfree); | |
3529 | cleanup = make_cleanup_htab_delete (visited_found); | |
3530 | visited_not_found = htab_create_alloc (10, | |
3531 | htab_hash_pointer, htab_eq_pointer, | |
3532 | NULL, xcalloc, xfree); | |
3533 | make_cleanup_htab_delete (visited_not_found); | |
3534 | ||
848e3e78 DE |
3535 | /* The rule is CUs specify all the files, including those used by |
3536 | any TU, so there's no need to scan TUs here. */ | |
3537 | ||
3538 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) | |
24c79950 TT |
3539 | { |
3540 | int j; | |
f4dc4d17 | 3541 | struct dwarf2_per_cu_data *per_cu = dw2_get_primary_cu (i); |
24c79950 TT |
3542 | struct quick_file_names *file_data; |
3543 | void **slot; | |
7b08b9eb | 3544 | |
24c79950 | 3545 | per_cu->v.quick->mark = 0; |
3d7bb9d9 | 3546 | |
24c79950 TT |
3547 | /* We only need to look at symtabs not already expanded. */ |
3548 | if (per_cu->v.quick->symtab) | |
3549 | continue; | |
7b08b9eb | 3550 | |
e4a48d9d | 3551 | file_data = dw2_get_file_names (per_cu); |
24c79950 TT |
3552 | if (file_data == NULL) |
3553 | continue; | |
7b08b9eb | 3554 | |
24c79950 TT |
3555 | if (htab_find (visited_not_found, file_data) != NULL) |
3556 | continue; | |
3557 | else if (htab_find (visited_found, file_data) != NULL) | |
3558 | { | |
3559 | per_cu->v.quick->mark = 1; | |
3560 | continue; | |
3561 | } | |
3562 | ||
3563 | for (j = 0; j < file_data->num_file_names; ++j) | |
3564 | { | |
da235a7c JK |
3565 | const char *this_real_name; |
3566 | ||
fbd9ab74 | 3567 | if (file_matcher (file_data->file_names[j], data, 0)) |
24c79950 TT |
3568 | { |
3569 | per_cu->v.quick->mark = 1; | |
3570 | break; | |
3571 | } | |
da235a7c JK |
3572 | |
3573 | /* Before we invoke realpath, which can get expensive when many | |
3574 | files are involved, do a quick comparison of the basenames. */ | |
3575 | if (!basenames_may_differ | |
3576 | && !file_matcher (lbasename (file_data->file_names[j]), | |
3577 | data, 1)) | |
3578 | continue; | |
3579 | ||
3580 | this_real_name = dw2_get_real_path (objfile, file_data, j); | |
3581 | if (file_matcher (this_real_name, data, 0)) | |
3582 | { | |
3583 | per_cu->v.quick->mark = 1; | |
3584 | break; | |
3585 | } | |
24c79950 TT |
3586 | } |
3587 | ||
3588 | slot = htab_find_slot (per_cu->v.quick->mark | |
3589 | ? visited_found | |
3590 | : visited_not_found, | |
3591 | file_data, INSERT); | |
3592 | *slot = file_data; | |
3593 | } | |
3594 | ||
3595 | do_cleanups (cleanup); | |
3596 | } | |
9291a0cd | 3597 | |
3876f04e | 3598 | for (iter = 0; iter < index->symbol_table_slots; ++iter) |
9291a0cd TT |
3599 | { |
3600 | offset_type idx = 2 * iter; | |
3601 | const char *name; | |
3602 | offset_type *vec, vec_len, vec_idx; | |
3603 | ||
3876f04e | 3604 | if (index->symbol_table[idx] == 0 && index->symbol_table[idx + 1] == 0) |
9291a0cd TT |
3605 | continue; |
3606 | ||
3876f04e | 3607 | name = index->constant_pool + MAYBE_SWAP (index->symbol_table[idx]); |
9291a0cd | 3608 | |
e078317b | 3609 | if (! (*name_matcher) (name, data)) |
9291a0cd TT |
3610 | continue; |
3611 | ||
3612 | /* The name was matched, now expand corresponding CUs that were | |
3613 | marked. */ | |
4b5246aa | 3614 | vec = (offset_type *) (index->constant_pool |
3876f04e | 3615 | + MAYBE_SWAP (index->symbol_table[idx + 1])); |
9291a0cd TT |
3616 | vec_len = MAYBE_SWAP (vec[0]); |
3617 | for (vec_idx = 0; vec_idx < vec_len; ++vec_idx) | |
3618 | { | |
e254ef6a | 3619 | struct dwarf2_per_cu_data *per_cu; |
156942c7 DE |
3620 | offset_type cu_index_and_attrs = MAYBE_SWAP (vec[vec_idx + 1]); |
3621 | gdb_index_symbol_kind symbol_kind = | |
3622 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
3623 | int cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
3624 | ||
3625 | /* Don't crash on bad data. */ | |
3626 | if (cu_index >= (dwarf2_per_objfile->n_comp_units | |
667e0a4b | 3627 | + dwarf2_per_objfile->n_type_units)) |
156942c7 | 3628 | continue; |
1fd400ff | 3629 | |
156942c7 DE |
3630 | /* Only check the symbol's kind if it has one. |
3631 | Indices prior to version 7 don't record it. */ | |
3632 | if (index->version >= 7) | |
3633 | { | |
3634 | switch (kind) | |
3635 | { | |
3636 | case VARIABLES_DOMAIN: | |
3637 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE) | |
3638 | continue; | |
3639 | break; | |
3640 | case FUNCTIONS_DOMAIN: | |
3641 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION) | |
3642 | continue; | |
3643 | break; | |
3644 | case TYPES_DOMAIN: | |
3645 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
3646 | continue; | |
3647 | break; | |
3648 | default: | |
3649 | break; | |
3650 | } | |
3651 | } | |
3652 | ||
3653 | per_cu = dw2_get_cu (cu_index); | |
7b08b9eb | 3654 | if (file_matcher == NULL || per_cu->v.quick->mark) |
a0f42c21 | 3655 | dw2_instantiate_symtab (per_cu); |
9291a0cd TT |
3656 | } |
3657 | } | |
3658 | } | |
3659 | ||
9703b513 TT |
3660 | /* A helper for dw2_find_pc_sect_symtab which finds the most specific |
3661 | symtab. */ | |
3662 | ||
3663 | static struct symtab * | |
3664 | recursively_find_pc_sect_symtab (struct symtab *symtab, CORE_ADDR pc) | |
3665 | { | |
3666 | int i; | |
3667 | ||
3668 | if (BLOCKVECTOR (symtab) != NULL | |
3669 | && blockvector_contains_pc (BLOCKVECTOR (symtab), pc)) | |
3670 | return symtab; | |
3671 | ||
a3ec0bb1 DE |
3672 | if (symtab->includes == NULL) |
3673 | return NULL; | |
3674 | ||
9703b513 TT |
3675 | for (i = 0; symtab->includes[i]; ++i) |
3676 | { | |
a3ec0bb1 | 3677 | struct symtab *s = symtab->includes[i]; |
9703b513 TT |
3678 | |
3679 | s = recursively_find_pc_sect_symtab (s, pc); | |
3680 | if (s != NULL) | |
3681 | return s; | |
3682 | } | |
3683 | ||
3684 | return NULL; | |
3685 | } | |
3686 | ||
9291a0cd TT |
3687 | static struct symtab * |
3688 | dw2_find_pc_sect_symtab (struct objfile *objfile, | |
3689 | struct minimal_symbol *msymbol, | |
3690 | CORE_ADDR pc, | |
3691 | struct obj_section *section, | |
3692 | int warn_if_readin) | |
3693 | { | |
3694 | struct dwarf2_per_cu_data *data; | |
9703b513 | 3695 | struct symtab *result; |
9291a0cd TT |
3696 | |
3697 | dw2_setup (objfile); | |
3698 | ||
3699 | if (!objfile->psymtabs_addrmap) | |
3700 | return NULL; | |
3701 | ||
3702 | data = addrmap_find (objfile->psymtabs_addrmap, pc); | |
3703 | if (!data) | |
3704 | return NULL; | |
3705 | ||
3706 | if (warn_if_readin && data->v.quick->symtab) | |
abebb8b0 | 3707 | warning (_("(Internal error: pc %s in read in CU, but not in symtab.)"), |
9291a0cd TT |
3708 | paddress (get_objfile_arch (objfile), pc)); |
3709 | ||
9703b513 TT |
3710 | result = recursively_find_pc_sect_symtab (dw2_instantiate_symtab (data), pc); |
3711 | gdb_assert (result != NULL); | |
3712 | return result; | |
9291a0cd TT |
3713 | } |
3714 | ||
9291a0cd | 3715 | static void |
44b13c5a | 3716 | dw2_map_symbol_filenames (struct objfile *objfile, symbol_filename_ftype *fun, |
74e2f255 | 3717 | void *data, int need_fullname) |
9291a0cd TT |
3718 | { |
3719 | int i; | |
24c79950 TT |
3720 | struct cleanup *cleanup; |
3721 | htab_t visited = htab_create_alloc (10, htab_hash_pointer, htab_eq_pointer, | |
3722 | NULL, xcalloc, xfree); | |
9291a0cd | 3723 | |
24c79950 | 3724 | cleanup = make_cleanup_htab_delete (visited); |
9291a0cd | 3725 | dw2_setup (objfile); |
ae2de4f8 | 3726 | |
848e3e78 DE |
3727 | /* The rule is CUs specify all the files, including those used by |
3728 | any TU, so there's no need to scan TUs here. | |
3729 | We can ignore file names coming from already-expanded CUs. */ | |
f4dc4d17 | 3730 | |
848e3e78 | 3731 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
24c79950 TT |
3732 | { |
3733 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); | |
3734 | ||
3735 | if (per_cu->v.quick->symtab) | |
3736 | { | |
3737 | void **slot = htab_find_slot (visited, per_cu->v.quick->file_names, | |
3738 | INSERT); | |
3739 | ||
3740 | *slot = per_cu->v.quick->file_names; | |
3741 | } | |
3742 | } | |
3743 | ||
848e3e78 | 3744 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
9291a0cd TT |
3745 | { |
3746 | int j; | |
f4dc4d17 | 3747 | struct dwarf2_per_cu_data *per_cu = dw2_get_primary_cu (i); |
7b9f3c50 | 3748 | struct quick_file_names *file_data; |
24c79950 | 3749 | void **slot; |
9291a0cd | 3750 | |
3d7bb9d9 | 3751 | /* We only need to look at symtabs not already expanded. */ |
e254ef6a | 3752 | if (per_cu->v.quick->symtab) |
9291a0cd TT |
3753 | continue; |
3754 | ||
e4a48d9d | 3755 | file_data = dw2_get_file_names (per_cu); |
7b9f3c50 | 3756 | if (file_data == NULL) |
9291a0cd TT |
3757 | continue; |
3758 | ||
24c79950 TT |
3759 | slot = htab_find_slot (visited, file_data, INSERT); |
3760 | if (*slot) | |
3761 | { | |
3762 | /* Already visited. */ | |
3763 | continue; | |
3764 | } | |
3765 | *slot = file_data; | |
3766 | ||
7b9f3c50 | 3767 | for (j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 3768 | { |
74e2f255 DE |
3769 | const char *this_real_name; |
3770 | ||
3771 | if (need_fullname) | |
3772 | this_real_name = dw2_get_real_path (objfile, file_data, j); | |
3773 | else | |
3774 | this_real_name = NULL; | |
7b9f3c50 | 3775 | (*fun) (file_data->file_names[j], this_real_name, data); |
9291a0cd TT |
3776 | } |
3777 | } | |
24c79950 TT |
3778 | |
3779 | do_cleanups (cleanup); | |
9291a0cd TT |
3780 | } |
3781 | ||
3782 | static int | |
3783 | dw2_has_symbols (struct objfile *objfile) | |
3784 | { | |
3785 | return 1; | |
3786 | } | |
3787 | ||
3788 | const struct quick_symbol_functions dwarf2_gdb_index_functions = | |
3789 | { | |
3790 | dw2_has_symbols, | |
3791 | dw2_find_last_source_symtab, | |
3792 | dw2_forget_cached_source_info, | |
f8eba3c6 | 3793 | dw2_map_symtabs_matching_filename, |
9291a0cd | 3794 | dw2_lookup_symbol, |
9291a0cd TT |
3795 | dw2_print_stats, |
3796 | dw2_dump, | |
3797 | dw2_relocate, | |
3798 | dw2_expand_symtabs_for_function, | |
3799 | dw2_expand_all_symtabs, | |
652a8996 | 3800 | dw2_expand_symtabs_with_fullname, |
9291a0cd | 3801 | dw2_find_symbol_file, |
40658b94 | 3802 | dw2_map_matching_symbols, |
9291a0cd TT |
3803 | dw2_expand_symtabs_matching, |
3804 | dw2_find_pc_sect_symtab, | |
9291a0cd TT |
3805 | dw2_map_symbol_filenames |
3806 | }; | |
3807 | ||
3808 | /* Initialize for reading DWARF for this objfile. Return 0 if this | |
3809 | file will use psymtabs, or 1 if using the GNU index. */ | |
3810 | ||
3811 | int | |
3812 | dwarf2_initialize_objfile (struct objfile *objfile) | |
3813 | { | |
3814 | /* If we're about to read full symbols, don't bother with the | |
3815 | indices. In this case we also don't care if some other debug | |
3816 | format is making psymtabs, because they are all about to be | |
3817 | expanded anyway. */ | |
3818 | if ((objfile->flags & OBJF_READNOW)) | |
3819 | { | |
3820 | int i; | |
3821 | ||
3822 | dwarf2_per_objfile->using_index = 1; | |
3823 | create_all_comp_units (objfile); | |
0e50663e | 3824 | create_all_type_units (objfile); |
7b9f3c50 DE |
3825 | dwarf2_per_objfile->quick_file_names_table = |
3826 | create_quick_file_names_table (dwarf2_per_objfile->n_comp_units); | |
9291a0cd | 3827 | |
1fd400ff | 3828 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units |
d467dd73 | 3829 | + dwarf2_per_objfile->n_type_units); ++i) |
9291a0cd | 3830 | { |
e254ef6a | 3831 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
9291a0cd | 3832 | |
e254ef6a DE |
3833 | per_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
3834 | struct dwarf2_per_cu_quick_data); | |
9291a0cd TT |
3835 | } |
3836 | ||
3837 | /* Return 1 so that gdb sees the "quick" functions. However, | |
3838 | these functions will be no-ops because we will have expanded | |
3839 | all symtabs. */ | |
3840 | return 1; | |
3841 | } | |
3842 | ||
3843 | if (dwarf2_read_index (objfile)) | |
3844 | return 1; | |
3845 | ||
9291a0cd TT |
3846 | return 0; |
3847 | } | |
3848 | ||
3849 | \f | |
3850 | ||
dce234bc PP |
3851 | /* Build a partial symbol table. */ |
3852 | ||
3853 | void | |
f29dff0a | 3854 | dwarf2_build_psymtabs (struct objfile *objfile) |
dce234bc | 3855 | { |
c9bf0622 TT |
3856 | volatile struct gdb_exception except; |
3857 | ||
f29dff0a | 3858 | if (objfile->global_psymbols.size == 0 && objfile->static_psymbols.size == 0) |
c906108c SS |
3859 | { |
3860 | init_psymbol_list (objfile, 1024); | |
3861 | } | |
3862 | ||
c9bf0622 TT |
3863 | TRY_CATCH (except, RETURN_MASK_ERROR) |
3864 | { | |
3865 | /* This isn't really ideal: all the data we allocate on the | |
3866 | objfile's obstack is still uselessly kept around. However, | |
3867 | freeing it seems unsafe. */ | |
3868 | struct cleanup *cleanups = make_cleanup_discard_psymtabs (objfile); | |
3869 | ||
3870 | dwarf2_build_psymtabs_hard (objfile); | |
3871 | discard_cleanups (cleanups); | |
3872 | } | |
3873 | if (except.reason < 0) | |
3874 | exception_print (gdb_stderr, except); | |
c906108c | 3875 | } |
c906108c | 3876 | |
1ce1cefd DE |
3877 | /* Return the total length of the CU described by HEADER. */ |
3878 | ||
3879 | static unsigned int | |
3880 | get_cu_length (const struct comp_unit_head *header) | |
3881 | { | |
3882 | return header->initial_length_size + header->length; | |
3883 | } | |
3884 | ||
45452591 DE |
3885 | /* Return TRUE if OFFSET is within CU_HEADER. */ |
3886 | ||
3887 | static inline int | |
b64f50a1 | 3888 | offset_in_cu_p (const struct comp_unit_head *cu_header, sect_offset offset) |
45452591 | 3889 | { |
b64f50a1 | 3890 | sect_offset bottom = { cu_header->offset.sect_off }; |
1ce1cefd | 3891 | sect_offset top = { cu_header->offset.sect_off + get_cu_length (cu_header) }; |
9a619af0 | 3892 | |
b64f50a1 | 3893 | return (offset.sect_off >= bottom.sect_off && offset.sect_off < top.sect_off); |
45452591 DE |
3894 | } |
3895 | ||
3b80fe9b DE |
3896 | /* Find the base address of the compilation unit for range lists and |
3897 | location lists. It will normally be specified by DW_AT_low_pc. | |
3898 | In DWARF-3 draft 4, the base address could be overridden by | |
3899 | DW_AT_entry_pc. It's been removed, but GCC still uses this for | |
3900 | compilation units with discontinuous ranges. */ | |
3901 | ||
3902 | static void | |
3903 | dwarf2_find_base_address (struct die_info *die, struct dwarf2_cu *cu) | |
3904 | { | |
3905 | struct attribute *attr; | |
3906 | ||
3907 | cu->base_known = 0; | |
3908 | cu->base_address = 0; | |
3909 | ||
3910 | attr = dwarf2_attr (die, DW_AT_entry_pc, cu); | |
3911 | if (attr) | |
3912 | { | |
3913 | cu->base_address = DW_ADDR (attr); | |
3914 | cu->base_known = 1; | |
3915 | } | |
3916 | else | |
3917 | { | |
3918 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
3919 | if (attr) | |
3920 | { | |
3921 | cu->base_address = DW_ADDR (attr); | |
3922 | cu->base_known = 1; | |
3923 | } | |
3924 | } | |
3925 | } | |
3926 | ||
93311388 DE |
3927 | /* Read in the comp unit header information from the debug_info at info_ptr. |
3928 | NOTE: This leaves members offset, first_die_offset to be filled in | |
3929 | by the caller. */ | |
107d2387 | 3930 | |
fe1b8b76 | 3931 | static gdb_byte * |
107d2387 | 3932 | read_comp_unit_head (struct comp_unit_head *cu_header, |
fe1b8b76 | 3933 | gdb_byte *info_ptr, bfd *abfd) |
107d2387 AC |
3934 | { |
3935 | int signed_addr; | |
891d2f0b | 3936 | unsigned int bytes_read; |
c764a876 DE |
3937 | |
3938 | cu_header->length = read_initial_length (abfd, info_ptr, &bytes_read); | |
3939 | cu_header->initial_length_size = bytes_read; | |
3940 | cu_header->offset_size = (bytes_read == 4) ? 4 : 8; | |
613e1657 | 3941 | info_ptr += bytes_read; |
107d2387 AC |
3942 | cu_header->version = read_2_bytes (abfd, info_ptr); |
3943 | info_ptr += 2; | |
b64f50a1 JK |
3944 | cu_header->abbrev_offset.sect_off = read_offset (abfd, info_ptr, cu_header, |
3945 | &bytes_read); | |
613e1657 | 3946 | info_ptr += bytes_read; |
107d2387 AC |
3947 | cu_header->addr_size = read_1_byte (abfd, info_ptr); |
3948 | info_ptr += 1; | |
3949 | signed_addr = bfd_get_sign_extend_vma (abfd); | |
3950 | if (signed_addr < 0) | |
8e65ff28 | 3951 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 3952 | _("read_comp_unit_head: dwarf from non elf file")); |
107d2387 | 3953 | cu_header->signed_addr_p = signed_addr; |
c764a876 | 3954 | |
107d2387 AC |
3955 | return info_ptr; |
3956 | } | |
3957 | ||
36586728 TT |
3958 | /* Helper function that returns the proper abbrev section for |
3959 | THIS_CU. */ | |
3960 | ||
3961 | static struct dwarf2_section_info * | |
3962 | get_abbrev_section_for_cu (struct dwarf2_per_cu_data *this_cu) | |
3963 | { | |
3964 | struct dwarf2_section_info *abbrev; | |
3965 | ||
3966 | if (this_cu->is_dwz) | |
3967 | abbrev = &dwarf2_get_dwz_file ()->abbrev; | |
3968 | else | |
3969 | abbrev = &dwarf2_per_objfile->abbrev; | |
3970 | ||
3971 | return abbrev; | |
3972 | } | |
3973 | ||
9ff913ba DE |
3974 | /* Subroutine of read_and_check_comp_unit_head and |
3975 | read_and_check_type_unit_head to simplify them. | |
3976 | Perform various error checking on the header. */ | |
3977 | ||
3978 | static void | |
3979 | error_check_comp_unit_head (struct comp_unit_head *header, | |
4bdcc0c1 DE |
3980 | struct dwarf2_section_info *section, |
3981 | struct dwarf2_section_info *abbrev_section) | |
9ff913ba DE |
3982 | { |
3983 | bfd *abfd = section->asection->owner; | |
3984 | const char *filename = bfd_get_filename (abfd); | |
3985 | ||
3986 | if (header->version != 2 && header->version != 3 && header->version != 4) | |
3987 | error (_("Dwarf Error: wrong version in compilation unit header " | |
3988 | "(is %d, should be 2, 3, or 4) [in module %s]"), header->version, | |
3989 | filename); | |
3990 | ||
b64f50a1 | 3991 | if (header->abbrev_offset.sect_off |
36586728 | 3992 | >= dwarf2_section_size (dwarf2_per_objfile->objfile, abbrev_section)) |
9ff913ba DE |
3993 | error (_("Dwarf Error: bad offset (0x%lx) in compilation unit header " |
3994 | "(offset 0x%lx + 6) [in module %s]"), | |
b64f50a1 | 3995 | (long) header->abbrev_offset.sect_off, (long) header->offset.sect_off, |
9ff913ba DE |
3996 | filename); |
3997 | ||
3998 | /* Cast to unsigned long to use 64-bit arithmetic when possible to | |
3999 | avoid potential 32-bit overflow. */ | |
1ce1cefd | 4000 | if (((unsigned long) header->offset.sect_off + get_cu_length (header)) |
9ff913ba DE |
4001 | > section->size) |
4002 | error (_("Dwarf Error: bad length (0x%lx) in compilation unit header " | |
4003 | "(offset 0x%lx + 0) [in module %s]"), | |
b64f50a1 | 4004 | (long) header->length, (long) header->offset.sect_off, |
9ff913ba DE |
4005 | filename); |
4006 | } | |
4007 | ||
4008 | /* Read in a CU/TU header and perform some basic error checking. | |
4009 | The contents of the header are stored in HEADER. | |
4010 | The result is a pointer to the start of the first DIE. */ | |
adabb602 | 4011 | |
fe1b8b76 | 4012 | static gdb_byte * |
9ff913ba DE |
4013 | read_and_check_comp_unit_head (struct comp_unit_head *header, |
4014 | struct dwarf2_section_info *section, | |
4bdcc0c1 | 4015 | struct dwarf2_section_info *abbrev_section, |
9ff913ba DE |
4016 | gdb_byte *info_ptr, |
4017 | int is_debug_types_section) | |
72bf9492 | 4018 | { |
fe1b8b76 | 4019 | gdb_byte *beg_of_comp_unit = info_ptr; |
9ff913ba | 4020 | bfd *abfd = section->asection->owner; |
72bf9492 | 4021 | |
b64f50a1 | 4022 | header->offset.sect_off = beg_of_comp_unit - section->buffer; |
adabb602 | 4023 | |
72bf9492 DJ |
4024 | info_ptr = read_comp_unit_head (header, info_ptr, abfd); |
4025 | ||
460c1c54 CC |
4026 | /* If we're reading a type unit, skip over the signature and |
4027 | type_offset fields. */ | |
b0df02fd | 4028 | if (is_debug_types_section) |
460c1c54 CC |
4029 | info_ptr += 8 /*signature*/ + header->offset_size; |
4030 | ||
b64f50a1 | 4031 | header->first_die_offset.cu_off = info_ptr - beg_of_comp_unit; |
adabb602 | 4032 | |
4bdcc0c1 | 4033 | error_check_comp_unit_head (header, section, abbrev_section); |
72bf9492 DJ |
4034 | |
4035 | return info_ptr; | |
4036 | } | |
4037 | ||
348e048f DE |
4038 | /* Read in the types comp unit header information from .debug_types entry at |
4039 | types_ptr. The result is a pointer to one past the end of the header. */ | |
4040 | ||
4041 | static gdb_byte * | |
9ff913ba DE |
4042 | read_and_check_type_unit_head (struct comp_unit_head *header, |
4043 | struct dwarf2_section_info *section, | |
4bdcc0c1 | 4044 | struct dwarf2_section_info *abbrev_section, |
9ff913ba | 4045 | gdb_byte *info_ptr, |
dee91e82 DE |
4046 | ULONGEST *signature, |
4047 | cu_offset *type_offset_in_tu) | |
348e048f | 4048 | { |
9ff913ba DE |
4049 | gdb_byte *beg_of_comp_unit = info_ptr; |
4050 | bfd *abfd = section->asection->owner; | |
348e048f | 4051 | |
b64f50a1 | 4052 | header->offset.sect_off = beg_of_comp_unit - section->buffer; |
348e048f | 4053 | |
9ff913ba | 4054 | info_ptr = read_comp_unit_head (header, info_ptr, abfd); |
348e048f | 4055 | |
9ff913ba DE |
4056 | /* If we're reading a type unit, skip over the signature and |
4057 | type_offset fields. */ | |
4058 | if (signature != NULL) | |
4059 | *signature = read_8_bytes (abfd, info_ptr); | |
4060 | info_ptr += 8; | |
dee91e82 DE |
4061 | if (type_offset_in_tu != NULL) |
4062 | type_offset_in_tu->cu_off = read_offset_1 (abfd, info_ptr, | |
4063 | header->offset_size); | |
9ff913ba DE |
4064 | info_ptr += header->offset_size; |
4065 | ||
b64f50a1 | 4066 | header->first_die_offset.cu_off = info_ptr - beg_of_comp_unit; |
348e048f | 4067 | |
4bdcc0c1 | 4068 | error_check_comp_unit_head (header, section, abbrev_section); |
9ff913ba DE |
4069 | |
4070 | return info_ptr; | |
348e048f DE |
4071 | } |
4072 | ||
f4dc4d17 DE |
4073 | /* Fetch the abbreviation table offset from a comp or type unit header. */ |
4074 | ||
4075 | static sect_offset | |
4076 | read_abbrev_offset (struct dwarf2_section_info *section, | |
4077 | sect_offset offset) | |
4078 | { | |
4079 | bfd *abfd = section->asection->owner; | |
4080 | gdb_byte *info_ptr; | |
4081 | unsigned int length, initial_length_size, offset_size; | |
4082 | sect_offset abbrev_offset; | |
4083 | ||
4084 | dwarf2_read_section (dwarf2_per_objfile->objfile, section); | |
4085 | info_ptr = section->buffer + offset.sect_off; | |
4086 | length = read_initial_length (abfd, info_ptr, &initial_length_size); | |
4087 | offset_size = initial_length_size == 4 ? 4 : 8; | |
4088 | info_ptr += initial_length_size + 2 /*version*/; | |
4089 | abbrev_offset.sect_off = read_offset_1 (abfd, info_ptr, offset_size); | |
4090 | return abbrev_offset; | |
4091 | } | |
4092 | ||
aaa75496 JB |
4093 | /* Allocate a new partial symtab for file named NAME and mark this new |
4094 | partial symtab as being an include of PST. */ | |
4095 | ||
4096 | static void | |
4097 | dwarf2_create_include_psymtab (char *name, struct partial_symtab *pst, | |
4098 | struct objfile *objfile) | |
4099 | { | |
4100 | struct partial_symtab *subpst = allocate_psymtab (name, objfile); | |
4101 | ||
fbd9ab74 JK |
4102 | if (!IS_ABSOLUTE_PATH (subpst->filename)) |
4103 | { | |
4104 | /* It shares objfile->objfile_obstack. */ | |
4105 | subpst->dirname = pst->dirname; | |
4106 | } | |
4107 | ||
aaa75496 JB |
4108 | subpst->section_offsets = pst->section_offsets; |
4109 | subpst->textlow = 0; | |
4110 | subpst->texthigh = 0; | |
4111 | ||
4112 | subpst->dependencies = (struct partial_symtab **) | |
4113 | obstack_alloc (&objfile->objfile_obstack, | |
4114 | sizeof (struct partial_symtab *)); | |
4115 | subpst->dependencies[0] = pst; | |
4116 | subpst->number_of_dependencies = 1; | |
4117 | ||
4118 | subpst->globals_offset = 0; | |
4119 | subpst->n_global_syms = 0; | |
4120 | subpst->statics_offset = 0; | |
4121 | subpst->n_static_syms = 0; | |
4122 | subpst->symtab = NULL; | |
4123 | subpst->read_symtab = pst->read_symtab; | |
4124 | subpst->readin = 0; | |
4125 | ||
4126 | /* No private part is necessary for include psymtabs. This property | |
4127 | can be used to differentiate between such include psymtabs and | |
10b3939b | 4128 | the regular ones. */ |
58a9656e | 4129 | subpst->read_symtab_private = NULL; |
aaa75496 JB |
4130 | } |
4131 | ||
4132 | /* Read the Line Number Program data and extract the list of files | |
4133 | included by the source file represented by PST. Build an include | |
d85a05f0 | 4134 | partial symtab for each of these included files. */ |
aaa75496 JB |
4135 | |
4136 | static void | |
4137 | dwarf2_build_include_psymtabs (struct dwarf2_cu *cu, | |
dee91e82 DE |
4138 | struct die_info *die, |
4139 | struct partial_symtab *pst) | |
aaa75496 | 4140 | { |
d85a05f0 DJ |
4141 | struct line_header *lh = NULL; |
4142 | struct attribute *attr; | |
aaa75496 | 4143 | |
d85a05f0 DJ |
4144 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
4145 | if (attr) | |
3019eac3 | 4146 | lh = dwarf_decode_line_header (DW_UNSND (attr), cu); |
aaa75496 JB |
4147 | if (lh == NULL) |
4148 | return; /* No linetable, so no includes. */ | |
4149 | ||
c6da4cef | 4150 | /* NOTE: pst->dirname is DW_AT_comp_dir (if present). */ |
f3f5162e | 4151 | dwarf_decode_lines (lh, pst->dirname, cu, pst, 1); |
aaa75496 JB |
4152 | |
4153 | free_line_header (lh); | |
4154 | } | |
4155 | ||
348e048f | 4156 | static hashval_t |
52dc124a | 4157 | hash_signatured_type (const void *item) |
348e048f | 4158 | { |
52dc124a | 4159 | const struct signatured_type *sig_type = item; |
9a619af0 | 4160 | |
348e048f | 4161 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
52dc124a | 4162 | return sig_type->signature; |
348e048f DE |
4163 | } |
4164 | ||
4165 | static int | |
52dc124a | 4166 | eq_signatured_type (const void *item_lhs, const void *item_rhs) |
348e048f DE |
4167 | { |
4168 | const struct signatured_type *lhs = item_lhs; | |
4169 | const struct signatured_type *rhs = item_rhs; | |
9a619af0 | 4170 | |
348e048f DE |
4171 | return lhs->signature == rhs->signature; |
4172 | } | |
4173 | ||
1fd400ff TT |
4174 | /* Allocate a hash table for signatured types. */ |
4175 | ||
4176 | static htab_t | |
673bfd45 | 4177 | allocate_signatured_type_table (struct objfile *objfile) |
1fd400ff TT |
4178 | { |
4179 | return htab_create_alloc_ex (41, | |
52dc124a DE |
4180 | hash_signatured_type, |
4181 | eq_signatured_type, | |
1fd400ff TT |
4182 | NULL, |
4183 | &objfile->objfile_obstack, | |
4184 | hashtab_obstack_allocate, | |
4185 | dummy_obstack_deallocate); | |
4186 | } | |
4187 | ||
d467dd73 | 4188 | /* A helper function to add a signatured type CU to a table. */ |
1fd400ff TT |
4189 | |
4190 | static int | |
d467dd73 | 4191 | add_signatured_type_cu_to_table (void **slot, void *datum) |
1fd400ff TT |
4192 | { |
4193 | struct signatured_type *sigt = *slot; | |
b4dd5633 | 4194 | struct signatured_type ***datap = datum; |
1fd400ff | 4195 | |
b4dd5633 | 4196 | **datap = sigt; |
1fd400ff TT |
4197 | ++*datap; |
4198 | ||
4199 | return 1; | |
4200 | } | |
4201 | ||
3019eac3 | 4202 | /* Create the hash table of all entries in the .debug_types section. |
80626a55 DE |
4203 | DWO_FILE is a pointer to the DWO file for .debug_types.dwo, |
4204 | NULL otherwise. | |
4205 | Note: This function processes DWO files only, not DWP files. | |
3019eac3 DE |
4206 | The result is a pointer to the hash table or NULL if there are |
4207 | no types. */ | |
348e048f | 4208 | |
3019eac3 DE |
4209 | static htab_t |
4210 | create_debug_types_hash_table (struct dwo_file *dwo_file, | |
4211 | VEC (dwarf2_section_info_def) *types) | |
348e048f | 4212 | { |
3019eac3 | 4213 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8b70b953 | 4214 | htab_t types_htab = NULL; |
8b70b953 TT |
4215 | int ix; |
4216 | struct dwarf2_section_info *section; | |
4bdcc0c1 | 4217 | struct dwarf2_section_info *abbrev_section; |
348e048f | 4218 | |
3019eac3 DE |
4219 | if (VEC_empty (dwarf2_section_info_def, types)) |
4220 | return NULL; | |
348e048f | 4221 | |
4bdcc0c1 DE |
4222 | abbrev_section = (dwo_file != NULL |
4223 | ? &dwo_file->sections.abbrev | |
4224 | : &dwarf2_per_objfile->abbrev); | |
4225 | ||
09406207 DE |
4226 | if (dwarf2_read_debug) |
4227 | fprintf_unfiltered (gdb_stdlog, "Reading .debug_types%s for %s:\n", | |
4228 | dwo_file ? ".dwo" : "", | |
4229 | bfd_get_filename (abbrev_section->asection->owner)); | |
4230 | ||
8b70b953 | 4231 | for (ix = 0; |
3019eac3 | 4232 | VEC_iterate (dwarf2_section_info_def, types, ix, section); |
8b70b953 TT |
4233 | ++ix) |
4234 | { | |
3019eac3 | 4235 | bfd *abfd; |
8b70b953 | 4236 | gdb_byte *info_ptr, *end_ptr; |
36586728 | 4237 | struct dwarf2_section_info *abbrev_section; |
348e048f | 4238 | |
8b70b953 TT |
4239 | dwarf2_read_section (objfile, section); |
4240 | info_ptr = section->buffer; | |
348e048f | 4241 | |
8b70b953 TT |
4242 | if (info_ptr == NULL) |
4243 | continue; | |
348e048f | 4244 | |
3019eac3 DE |
4245 | /* We can't set abfd until now because the section may be empty or |
4246 | not present, in which case section->asection will be NULL. */ | |
4247 | abfd = section->asection->owner; | |
4248 | ||
36586728 TT |
4249 | if (dwo_file) |
4250 | abbrev_section = &dwo_file->sections.abbrev; | |
4251 | else | |
4252 | abbrev_section = &dwarf2_per_objfile->abbrev; | |
4253 | ||
dee91e82 DE |
4254 | /* We don't use init_cutu_and_read_dies_simple, or some such, here |
4255 | because we don't need to read any dies: the signature is in the | |
4256 | header. */ | |
8b70b953 TT |
4257 | |
4258 | end_ptr = info_ptr + section->size; | |
4259 | while (info_ptr < end_ptr) | |
4260 | { | |
b64f50a1 | 4261 | sect_offset offset; |
3019eac3 | 4262 | cu_offset type_offset_in_tu; |
8b70b953 | 4263 | ULONGEST signature; |
52dc124a | 4264 | struct signatured_type *sig_type; |
3019eac3 | 4265 | struct dwo_unit *dwo_tu; |
8b70b953 TT |
4266 | void **slot; |
4267 | gdb_byte *ptr = info_ptr; | |
9ff913ba | 4268 | struct comp_unit_head header; |
dee91e82 | 4269 | unsigned int length; |
348e048f | 4270 | |
b64f50a1 | 4271 | offset.sect_off = ptr - section->buffer; |
348e048f | 4272 | |
8b70b953 | 4273 | /* We need to read the type's signature in order to build the hash |
9ff913ba | 4274 | table, but we don't need anything else just yet. */ |
348e048f | 4275 | |
4bdcc0c1 DE |
4276 | ptr = read_and_check_type_unit_head (&header, section, |
4277 | abbrev_section, ptr, | |
3019eac3 | 4278 | &signature, &type_offset_in_tu); |
6caca83c | 4279 | |
1ce1cefd | 4280 | length = get_cu_length (&header); |
dee91e82 | 4281 | |
6caca83c | 4282 | /* Skip dummy type units. */ |
dee91e82 DE |
4283 | if (ptr >= info_ptr + length |
4284 | || peek_abbrev_code (abfd, ptr) == 0) | |
6caca83c | 4285 | { |
1ce1cefd | 4286 | info_ptr += length; |
6caca83c CC |
4287 | continue; |
4288 | } | |
8b70b953 | 4289 | |
0349ea22 DE |
4290 | if (types_htab == NULL) |
4291 | { | |
4292 | if (dwo_file) | |
4293 | types_htab = allocate_dwo_unit_table (objfile); | |
4294 | else | |
4295 | types_htab = allocate_signatured_type_table (objfile); | |
4296 | } | |
4297 | ||
3019eac3 DE |
4298 | if (dwo_file) |
4299 | { | |
4300 | sig_type = NULL; | |
4301 | dwo_tu = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
4302 | struct dwo_unit); | |
4303 | dwo_tu->dwo_file = dwo_file; | |
4304 | dwo_tu->signature = signature; | |
4305 | dwo_tu->type_offset_in_tu = type_offset_in_tu; | |
8a0459fd | 4306 | dwo_tu->section = section; |
3019eac3 DE |
4307 | dwo_tu->offset = offset; |
4308 | dwo_tu->length = length; | |
4309 | } | |
4310 | else | |
4311 | { | |
4312 | /* N.B.: type_offset is not usable if this type uses a DWO file. | |
4313 | The real type_offset is in the DWO file. */ | |
4314 | dwo_tu = NULL; | |
4315 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
4316 | struct signatured_type); | |
4317 | sig_type->signature = signature; | |
4318 | sig_type->type_offset_in_tu = type_offset_in_tu; | |
4319 | sig_type->per_cu.objfile = objfile; | |
4320 | sig_type->per_cu.is_debug_types = 1; | |
8a0459fd | 4321 | sig_type->per_cu.section = section; |
3019eac3 DE |
4322 | sig_type->per_cu.offset = offset; |
4323 | sig_type->per_cu.length = length; | |
4324 | } | |
8b70b953 | 4325 | |
3019eac3 DE |
4326 | slot = htab_find_slot (types_htab, |
4327 | dwo_file ? (void*) dwo_tu : (void *) sig_type, | |
4328 | INSERT); | |
8b70b953 TT |
4329 | gdb_assert (slot != NULL); |
4330 | if (*slot != NULL) | |
4331 | { | |
3019eac3 DE |
4332 | sect_offset dup_offset; |
4333 | ||
4334 | if (dwo_file) | |
4335 | { | |
4336 | const struct dwo_unit *dup_tu = *slot; | |
4337 | ||
4338 | dup_offset = dup_tu->offset; | |
4339 | } | |
4340 | else | |
4341 | { | |
4342 | const struct signatured_type *dup_tu = *slot; | |
4343 | ||
4344 | dup_offset = dup_tu->per_cu.offset; | |
4345 | } | |
b3c8eb43 | 4346 | |
8b70b953 TT |
4347 | complaint (&symfile_complaints, |
4348 | _("debug type entry at offset 0x%x is duplicate to the " | |
4349 | "entry at offset 0x%x, signature 0x%s"), | |
3019eac3 | 4350 | offset.sect_off, dup_offset.sect_off, |
8b70b953 | 4351 | phex (signature, sizeof (signature))); |
8b70b953 | 4352 | } |
3019eac3 | 4353 | *slot = dwo_file ? (void *) dwo_tu : (void *) sig_type; |
348e048f | 4354 | |
09406207 | 4355 | if (dwarf2_read_debug) |
8b70b953 | 4356 | fprintf_unfiltered (gdb_stdlog, " offset 0x%x, signature 0x%s\n", |
b64f50a1 JK |
4357 | offset.sect_off, |
4358 | phex (signature, sizeof (signature))); | |
348e048f | 4359 | |
dee91e82 | 4360 | info_ptr += length; |
8b70b953 | 4361 | } |
348e048f DE |
4362 | } |
4363 | ||
3019eac3 DE |
4364 | return types_htab; |
4365 | } | |
4366 | ||
4367 | /* Create the hash table of all entries in the .debug_types section, | |
4368 | and initialize all_type_units. | |
4369 | The result is zero if there is an error (e.g. missing .debug_types section), | |
4370 | otherwise non-zero. */ | |
4371 | ||
4372 | static int | |
4373 | create_all_type_units (struct objfile *objfile) | |
4374 | { | |
4375 | htab_t types_htab; | |
b4dd5633 | 4376 | struct signatured_type **iter; |
3019eac3 DE |
4377 | |
4378 | types_htab = create_debug_types_hash_table (NULL, dwarf2_per_objfile->types); | |
4379 | if (types_htab == NULL) | |
4380 | { | |
4381 | dwarf2_per_objfile->signatured_types = NULL; | |
4382 | return 0; | |
4383 | } | |
4384 | ||
348e048f DE |
4385 | dwarf2_per_objfile->signatured_types = types_htab; |
4386 | ||
d467dd73 DE |
4387 | dwarf2_per_objfile->n_type_units = htab_elements (types_htab); |
4388 | dwarf2_per_objfile->all_type_units | |
1fd400ff | 4389 | = obstack_alloc (&objfile->objfile_obstack, |
d467dd73 | 4390 | dwarf2_per_objfile->n_type_units |
b4dd5633 | 4391 | * sizeof (struct signatured_type *)); |
d467dd73 DE |
4392 | iter = &dwarf2_per_objfile->all_type_units[0]; |
4393 | htab_traverse_noresize (types_htab, add_signatured_type_cu_to_table, &iter); | |
4394 | gdb_assert (iter - &dwarf2_per_objfile->all_type_units[0] | |
4395 | == dwarf2_per_objfile->n_type_units); | |
1fd400ff | 4396 | |
348e048f DE |
4397 | return 1; |
4398 | } | |
4399 | ||
380bca97 | 4400 | /* Lookup a signature based type for DW_FORM_ref_sig8. |
5a8b3f62 DE |
4401 | Returns NULL if signature SIG is not present in the table. |
4402 | It is up to the caller to complain about this. */ | |
348e048f DE |
4403 | |
4404 | static struct signatured_type * | |
e319fa28 | 4405 | lookup_signatured_type (ULONGEST sig) |
348e048f DE |
4406 | { |
4407 | struct signatured_type find_entry, *entry; | |
4408 | ||
4409 | if (dwarf2_per_objfile->signatured_types == NULL) | |
5a8b3f62 | 4410 | return NULL; |
348e048f DE |
4411 | find_entry.signature = sig; |
4412 | entry = htab_find (dwarf2_per_objfile->signatured_types, &find_entry); | |
4413 | return entry; | |
4414 | } | |
42e7ad6c DE |
4415 | \f |
4416 | /* Low level DIE reading support. */ | |
348e048f | 4417 | |
d85a05f0 DJ |
4418 | /* Initialize a die_reader_specs struct from a dwarf2_cu struct. */ |
4419 | ||
4420 | static void | |
4421 | init_cu_die_reader (struct die_reader_specs *reader, | |
dee91e82 | 4422 | struct dwarf2_cu *cu, |
3019eac3 DE |
4423 | struct dwarf2_section_info *section, |
4424 | struct dwo_file *dwo_file) | |
d85a05f0 | 4425 | { |
fceca515 | 4426 | gdb_assert (section->readin && section->buffer != NULL); |
dee91e82 | 4427 | reader->abfd = section->asection->owner; |
d85a05f0 | 4428 | reader->cu = cu; |
3019eac3 | 4429 | reader->dwo_file = dwo_file; |
dee91e82 DE |
4430 | reader->die_section = section; |
4431 | reader->buffer = section->buffer; | |
f664829e | 4432 | reader->buffer_end = section->buffer + section->size; |
d85a05f0 DJ |
4433 | } |
4434 | ||
fd820528 | 4435 | /* Initialize a CU (or TU) and read its DIEs. |
3019eac3 | 4436 | If the CU defers to a DWO file, read the DWO file as well. |
dee91e82 | 4437 | |
f4dc4d17 DE |
4438 | ABBREV_TABLE, if non-NULL, is the abbreviation table to use. |
4439 | Otherwise the table specified in the comp unit header is read in and used. | |
4440 | This is an optimization for when we already have the abbrev table. | |
4441 | ||
dee91e82 DE |
4442 | If USE_EXISTING_CU is non-zero, and THIS_CU->cu is non-NULL, then use it. |
4443 | Otherwise, a new CU is allocated with xmalloc. | |
4444 | ||
4445 | If KEEP is non-zero, then if we allocated a dwarf2_cu we add it to | |
4446 | read_in_chain. Otherwise the dwarf2_cu data is freed at the end. | |
4447 | ||
4448 | WARNING: If THIS_CU is a "dummy CU" (used as filler by the incremental | |
fd820528 | 4449 | linker) then DIE_READER_FUNC will not get called. */ |
aaa75496 | 4450 | |
70221824 | 4451 | static void |
fd820528 | 4452 | init_cutu_and_read_dies (struct dwarf2_per_cu_data *this_cu, |
f4dc4d17 | 4453 | struct abbrev_table *abbrev_table, |
fd820528 DE |
4454 | int use_existing_cu, int keep, |
4455 | die_reader_func_ftype *die_reader_func, | |
4456 | void *data) | |
c906108c | 4457 | { |
dee91e82 | 4458 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8a0459fd | 4459 | struct dwarf2_section_info *section = this_cu->section; |
3019eac3 | 4460 | bfd *abfd = section->asection->owner; |
dee91e82 DE |
4461 | struct dwarf2_cu *cu; |
4462 | gdb_byte *begin_info_ptr, *info_ptr; | |
4463 | struct die_reader_specs reader; | |
d85a05f0 | 4464 | struct die_info *comp_unit_die; |
dee91e82 | 4465 | int has_children; |
d85a05f0 | 4466 | struct attribute *attr; |
dee91e82 DE |
4467 | struct cleanup *cleanups, *free_cu_cleanup = NULL; |
4468 | struct signatured_type *sig_type = NULL; | |
4bdcc0c1 | 4469 | struct dwarf2_section_info *abbrev_section; |
42e7ad6c DE |
4470 | /* Non-zero if CU currently points to a DWO file and we need to |
4471 | reread it. When this happens we need to reread the skeleton die | |
4472 | before we can reread the DWO file. */ | |
4473 | int rereading_dwo_cu = 0; | |
c906108c | 4474 | |
09406207 DE |
4475 | if (dwarf2_die_debug) |
4476 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset 0x%x\n", | |
4477 | this_cu->is_debug_types ? "type" : "comp", | |
4478 | this_cu->offset.sect_off); | |
4479 | ||
dee91e82 DE |
4480 | if (use_existing_cu) |
4481 | gdb_assert (keep); | |
23745b47 | 4482 | |
dee91e82 DE |
4483 | cleanups = make_cleanup (null_cleanup, NULL); |
4484 | ||
4485 | /* This is cheap if the section is already read in. */ | |
4486 | dwarf2_read_section (objfile, section); | |
4487 | ||
4488 | begin_info_ptr = info_ptr = section->buffer + this_cu->offset.sect_off; | |
36586728 TT |
4489 | |
4490 | abbrev_section = get_abbrev_section_for_cu (this_cu); | |
dee91e82 DE |
4491 | |
4492 | if (use_existing_cu && this_cu->cu != NULL) | |
4493 | { | |
4494 | cu = this_cu->cu; | |
42e7ad6c DE |
4495 | |
4496 | /* If this CU is from a DWO file we need to start over, we need to | |
4497 | refetch the attributes from the skeleton CU. | |
4498 | This could be optimized by retrieving those attributes from when we | |
4499 | were here the first time: the previous comp_unit_die was stored in | |
4500 | comp_unit_obstack. But there's no data yet that we need this | |
4501 | optimization. */ | |
4502 | if (cu->dwo_unit != NULL) | |
4503 | rereading_dwo_cu = 1; | |
dee91e82 DE |
4504 | } |
4505 | else | |
4506 | { | |
4507 | /* If !use_existing_cu, this_cu->cu must be NULL. */ | |
4508 | gdb_assert (this_cu->cu == NULL); | |
4509 | ||
4510 | cu = xmalloc (sizeof (*cu)); | |
4511 | init_one_comp_unit (cu, this_cu); | |
4512 | ||
4513 | /* If an error occurs while loading, release our storage. */ | |
4514 | free_cu_cleanup = make_cleanup (free_heap_comp_unit, cu); | |
42e7ad6c | 4515 | } |
dee91e82 | 4516 | |
42e7ad6c DE |
4517 | if (cu->header.first_die_offset.cu_off != 0 && ! rereading_dwo_cu) |
4518 | { | |
4519 | /* We already have the header, there's no need to read it in again. */ | |
4520 | info_ptr += cu->header.first_die_offset.cu_off; | |
4521 | } | |
4522 | else | |
4523 | { | |
3019eac3 | 4524 | if (this_cu->is_debug_types) |
dee91e82 DE |
4525 | { |
4526 | ULONGEST signature; | |
42e7ad6c | 4527 | cu_offset type_offset_in_tu; |
dee91e82 | 4528 | |
4bdcc0c1 DE |
4529 | info_ptr = read_and_check_type_unit_head (&cu->header, section, |
4530 | abbrev_section, info_ptr, | |
42e7ad6c DE |
4531 | &signature, |
4532 | &type_offset_in_tu); | |
dee91e82 | 4533 | |
42e7ad6c DE |
4534 | /* Since per_cu is the first member of struct signatured_type, |
4535 | we can go from a pointer to one to a pointer to the other. */ | |
4536 | sig_type = (struct signatured_type *) this_cu; | |
4537 | gdb_assert (sig_type->signature == signature); | |
4538 | gdb_assert (sig_type->type_offset_in_tu.cu_off | |
4539 | == type_offset_in_tu.cu_off); | |
dee91e82 DE |
4540 | gdb_assert (this_cu->offset.sect_off == cu->header.offset.sect_off); |
4541 | ||
42e7ad6c DE |
4542 | /* LENGTH has not been set yet for type units if we're |
4543 | using .gdb_index. */ | |
1ce1cefd | 4544 | this_cu->length = get_cu_length (&cu->header); |
3019eac3 DE |
4545 | |
4546 | /* Establish the type offset that can be used to lookup the type. */ | |
4547 | sig_type->type_offset_in_section.sect_off = | |
4548 | this_cu->offset.sect_off + sig_type->type_offset_in_tu.cu_off; | |
dee91e82 DE |
4549 | } |
4550 | else | |
4551 | { | |
4bdcc0c1 DE |
4552 | info_ptr = read_and_check_comp_unit_head (&cu->header, section, |
4553 | abbrev_section, | |
4554 | info_ptr, 0); | |
dee91e82 DE |
4555 | |
4556 | gdb_assert (this_cu->offset.sect_off == cu->header.offset.sect_off); | |
1ce1cefd | 4557 | gdb_assert (this_cu->length == get_cu_length (&cu->header)); |
dee91e82 DE |
4558 | } |
4559 | } | |
10b3939b | 4560 | |
6caca83c | 4561 | /* Skip dummy compilation units. */ |
dee91e82 | 4562 | if (info_ptr >= begin_info_ptr + this_cu->length |
6caca83c CC |
4563 | || peek_abbrev_code (abfd, info_ptr) == 0) |
4564 | { | |
dee91e82 | 4565 | do_cleanups (cleanups); |
21b2bd31 | 4566 | return; |
6caca83c CC |
4567 | } |
4568 | ||
433df2d4 DE |
4569 | /* If we don't have them yet, read the abbrevs for this compilation unit. |
4570 | And if we need to read them now, make sure they're freed when we're | |
42e7ad6c DE |
4571 | done. Note that it's important that if the CU had an abbrev table |
4572 | on entry we don't free it when we're done: Somewhere up the call stack | |
4573 | it may be in use. */ | |
f4dc4d17 DE |
4574 | if (abbrev_table != NULL) |
4575 | { | |
4576 | gdb_assert (cu->abbrev_table == NULL); | |
4577 | gdb_assert (cu->header.abbrev_offset.sect_off | |
4578 | == abbrev_table->offset.sect_off); | |
4579 | cu->abbrev_table = abbrev_table; | |
4580 | } | |
4581 | else if (cu->abbrev_table == NULL) | |
dee91e82 | 4582 | { |
4bdcc0c1 | 4583 | dwarf2_read_abbrevs (cu, abbrev_section); |
dee91e82 DE |
4584 | make_cleanup (dwarf2_free_abbrev_table, cu); |
4585 | } | |
42e7ad6c DE |
4586 | else if (rereading_dwo_cu) |
4587 | { | |
4588 | dwarf2_free_abbrev_table (cu); | |
4589 | dwarf2_read_abbrevs (cu, abbrev_section); | |
4590 | } | |
af703f96 | 4591 | |
dee91e82 | 4592 | /* Read the top level CU/TU die. */ |
3019eac3 | 4593 | init_cu_die_reader (&reader, cu, section, NULL); |
dee91e82 | 4594 | info_ptr = read_full_die (&reader, &comp_unit_die, info_ptr, &has_children); |
93311388 | 4595 | |
3019eac3 DE |
4596 | /* If we have a DWO stub, process it and then read in the DWO file. |
4597 | Note that if USE_EXISTING_OK != 0, and THIS_CU->cu already contains | |
4598 | a DWO CU, that this test will fail. */ | |
4599 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_name, cu); | |
4600 | if (attr) | |
4601 | { | |
15d034d0 | 4602 | const char *dwo_name = DW_STRING (attr); |
42e7ad6c | 4603 | const char *comp_dir_string; |
3019eac3 DE |
4604 | struct dwo_unit *dwo_unit; |
4605 | ULONGEST signature; /* Or dwo_id. */ | |
42e7ad6c | 4606 | struct attribute *comp_dir, *stmt_list, *low_pc, *high_pc, *ranges; |
3019eac3 | 4607 | int i,num_extra_attrs; |
4bdcc0c1 | 4608 | struct dwarf2_section_info *dwo_abbrev_section; |
3019eac3 DE |
4609 | |
4610 | if (has_children) | |
4611 | error (_("Dwarf Error: compilation unit with DW_AT_GNU_dwo_name" | |
4612 | " has children (offset 0x%x) [in module %s]"), | |
4613 | this_cu->offset.sect_off, bfd_get_filename (abfd)); | |
4614 | ||
4615 | /* These attributes aren't processed until later: | |
4616 | DW_AT_stmt_list, DW_AT_low_pc, DW_AT_high_pc, DW_AT_ranges. | |
4617 | However, the attribute is found in the stub which we won't have later. | |
4618 | In order to not impose this complication on the rest of the code, | |
4619 | we read them here and copy them to the DWO CU/TU die. */ | |
3019eac3 DE |
4620 | |
4621 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
4622 | DWO file. */ | |
42e7ad6c | 4623 | stmt_list = NULL; |
3019eac3 DE |
4624 | if (! this_cu->is_debug_types) |
4625 | stmt_list = dwarf2_attr (comp_unit_die, DW_AT_stmt_list, cu); | |
4626 | low_pc = dwarf2_attr (comp_unit_die, DW_AT_low_pc, cu); | |
4627 | high_pc = dwarf2_attr (comp_unit_die, DW_AT_high_pc, cu); | |
4628 | ranges = dwarf2_attr (comp_unit_die, DW_AT_ranges, cu); | |
42e7ad6c | 4629 | comp_dir = dwarf2_attr (comp_unit_die, DW_AT_comp_dir, cu); |
3019eac3 DE |
4630 | |
4631 | /* There should be a DW_AT_addr_base attribute here (if needed). | |
4632 | We need the value before we can process DW_FORM_GNU_addr_index. */ | |
4633 | cu->addr_base = 0; | |
3019eac3 DE |
4634 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_addr_base, cu); |
4635 | if (attr) | |
2e3cf129 DE |
4636 | cu->addr_base = DW_UNSND (attr); |
4637 | ||
4638 | /* There should be a DW_AT_ranges_base attribute here (if needed). | |
4639 | We need the value before we can process DW_AT_ranges. */ | |
4640 | cu->ranges_base = 0; | |
4641 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_ranges_base, cu); | |
4642 | if (attr) | |
4643 | cu->ranges_base = DW_UNSND (attr); | |
3019eac3 DE |
4644 | |
4645 | if (this_cu->is_debug_types) | |
4646 | { | |
4647 | gdb_assert (sig_type != NULL); | |
4648 | signature = sig_type->signature; | |
4649 | } | |
4650 | else | |
4651 | { | |
4652 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_id, cu); | |
4653 | if (! attr) | |
4654 | error (_("Dwarf Error: missing dwo_id [in module %s]"), | |
4655 | dwo_name); | |
4656 | signature = DW_UNSND (attr); | |
4657 | } | |
4658 | ||
4659 | /* We may need the comp_dir in order to find the DWO file. */ | |
42e7ad6c DE |
4660 | comp_dir_string = NULL; |
4661 | if (comp_dir) | |
4662 | comp_dir_string = DW_STRING (comp_dir); | |
3019eac3 DE |
4663 | |
4664 | if (this_cu->is_debug_types) | |
42e7ad6c | 4665 | dwo_unit = lookup_dwo_type_unit (sig_type, dwo_name, comp_dir_string); |
3019eac3 | 4666 | else |
42e7ad6c | 4667 | dwo_unit = lookup_dwo_comp_unit (this_cu, dwo_name, comp_dir_string, |
3019eac3 DE |
4668 | signature); |
4669 | ||
4670 | if (dwo_unit == NULL) | |
4671 | { | |
4672 | error (_("Dwarf Error: CU at offset 0x%x references unknown DWO" | |
4673 | " with ID %s [in module %s]"), | |
4674 | this_cu->offset.sect_off, | |
4675 | phex (signature, sizeof (signature)), | |
4676 | objfile->name); | |
4677 | } | |
4678 | ||
4679 | /* Set up for reading the DWO CU/TU. */ | |
4680 | cu->dwo_unit = dwo_unit; | |
8a0459fd | 4681 | section = dwo_unit->section; |
80626a55 | 4682 | dwarf2_read_section (objfile, section); |
3019eac3 | 4683 | begin_info_ptr = info_ptr = section->buffer + dwo_unit->offset.sect_off; |
4bdcc0c1 | 4684 | dwo_abbrev_section = &dwo_unit->dwo_file->sections.abbrev; |
3019eac3 DE |
4685 | init_cu_die_reader (&reader, cu, section, dwo_unit->dwo_file); |
4686 | ||
4687 | if (this_cu->is_debug_types) | |
4688 | { | |
4689 | ULONGEST signature; | |
80626a55 | 4690 | cu_offset type_offset_in_tu; |
3019eac3 | 4691 | |
4bdcc0c1 DE |
4692 | info_ptr = read_and_check_type_unit_head (&cu->header, section, |
4693 | dwo_abbrev_section, | |
4694 | info_ptr, | |
80626a55 DE |
4695 | &signature, |
4696 | &type_offset_in_tu); | |
3019eac3 DE |
4697 | gdb_assert (sig_type->signature == signature); |
4698 | gdb_assert (dwo_unit->offset.sect_off == cu->header.offset.sect_off); | |
80626a55 DE |
4699 | /* For DWOs coming from DWP files, we don't know the CU length |
4700 | nor the type's offset in the TU until now. */ | |
4701 | dwo_unit->length = get_cu_length (&cu->header); | |
4702 | dwo_unit->type_offset_in_tu = type_offset_in_tu; | |
3019eac3 DE |
4703 | |
4704 | /* Establish the type offset that can be used to lookup the type. | |
4705 | For DWO files, we don't know it until now. */ | |
4706 | sig_type->type_offset_in_section.sect_off = | |
4707 | dwo_unit->offset.sect_off + dwo_unit->type_offset_in_tu.cu_off; | |
4708 | } | |
4709 | else | |
4710 | { | |
4bdcc0c1 DE |
4711 | info_ptr = read_and_check_comp_unit_head (&cu->header, section, |
4712 | dwo_abbrev_section, | |
4713 | info_ptr, 0); | |
3019eac3 | 4714 | gdb_assert (dwo_unit->offset.sect_off == cu->header.offset.sect_off); |
80626a55 DE |
4715 | /* For DWOs coming from DWP files, we don't know the CU length |
4716 | until now. */ | |
4717 | dwo_unit->length = get_cu_length (&cu->header); | |
3019eac3 DE |
4718 | } |
4719 | ||
4720 | /* Discard the original CU's abbrev table, and read the DWO's. */ | |
f4dc4d17 DE |
4721 | if (abbrev_table == NULL) |
4722 | { | |
4723 | dwarf2_free_abbrev_table (cu); | |
4724 | dwarf2_read_abbrevs (cu, dwo_abbrev_section); | |
4725 | } | |
4726 | else | |
4727 | { | |
4728 | dwarf2_read_abbrevs (cu, dwo_abbrev_section); | |
4729 | make_cleanup (dwarf2_free_abbrev_table, cu); | |
4730 | } | |
3019eac3 DE |
4731 | |
4732 | /* Read in the die, but leave space to copy over the attributes | |
4733 | from the stub. This has the benefit of simplifying the rest of | |
4734 | the code - all the real work is done here. */ | |
4735 | num_extra_attrs = ((stmt_list != NULL) | |
4736 | + (low_pc != NULL) | |
4737 | + (high_pc != NULL) | |
42e7ad6c DE |
4738 | + (ranges != NULL) |
4739 | + (comp_dir != NULL)); | |
3019eac3 DE |
4740 | info_ptr = read_full_die_1 (&reader, &comp_unit_die, info_ptr, |
4741 | &has_children, num_extra_attrs); | |
4742 | ||
4743 | /* Copy over the attributes from the stub to the DWO die. */ | |
4744 | i = comp_unit_die->num_attrs; | |
4745 | if (stmt_list != NULL) | |
4746 | comp_unit_die->attrs[i++] = *stmt_list; | |
4747 | if (low_pc != NULL) | |
4748 | comp_unit_die->attrs[i++] = *low_pc; | |
4749 | if (high_pc != NULL) | |
4750 | comp_unit_die->attrs[i++] = *high_pc; | |
4751 | if (ranges != NULL) | |
4752 | comp_unit_die->attrs[i++] = *ranges; | |
42e7ad6c DE |
4753 | if (comp_dir != NULL) |
4754 | comp_unit_die->attrs[i++] = *comp_dir; | |
3019eac3 DE |
4755 | comp_unit_die->num_attrs += num_extra_attrs; |
4756 | ||
4757 | /* Skip dummy compilation units. */ | |
4758 | if (info_ptr >= begin_info_ptr + dwo_unit->length | |
4759 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
4760 | { | |
4761 | do_cleanups (cleanups); | |
4762 | return; | |
4763 | } | |
4764 | } | |
4765 | ||
dee91e82 DE |
4766 | die_reader_func (&reader, info_ptr, comp_unit_die, has_children, data); |
4767 | ||
4768 | if (free_cu_cleanup != NULL) | |
348e048f | 4769 | { |
dee91e82 DE |
4770 | if (keep) |
4771 | { | |
4772 | /* We've successfully allocated this compilation unit. Let our | |
4773 | caller clean it up when finished with it. */ | |
4774 | discard_cleanups (free_cu_cleanup); | |
4775 | ||
4776 | /* We can only discard free_cu_cleanup and all subsequent cleanups. | |
4777 | So we have to manually free the abbrev table. */ | |
4778 | dwarf2_free_abbrev_table (cu); | |
4779 | ||
4780 | /* Link this CU into read_in_chain. */ | |
4781 | this_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
4782 | dwarf2_per_objfile->read_in_chain = this_cu; | |
4783 | } | |
4784 | else | |
4785 | do_cleanups (free_cu_cleanup); | |
348e048f | 4786 | } |
dee91e82 DE |
4787 | |
4788 | do_cleanups (cleanups); | |
4789 | } | |
4790 | ||
3019eac3 DE |
4791 | /* Read CU/TU THIS_CU in section SECTION, |
4792 | but do not follow DW_AT_GNU_dwo_name if present. | |
80626a55 DE |
4793 | DWOP_FILE, if non-NULL, is the DWO/DWP file to read (the caller is assumed |
4794 | to have already done the lookup to find the DWO/DWP file). | |
dee91e82 DE |
4795 | |
4796 | The caller is required to fill in THIS_CU->section, THIS_CU->offset, and | |
3019eac3 | 4797 | THIS_CU->is_debug_types, but nothing else. |
dee91e82 DE |
4798 | |
4799 | We fill in THIS_CU->length. | |
4800 | ||
4801 | WARNING: If THIS_CU is a "dummy CU" (used as filler by the incremental | |
4802 | linker) then DIE_READER_FUNC will not get called. | |
4803 | ||
4804 | THIS_CU->cu is always freed when done. | |
3019eac3 DE |
4805 | This is done in order to not leave THIS_CU->cu in a state where we have |
4806 | to care whether it refers to the "main" CU or the DWO CU. */ | |
dee91e82 DE |
4807 | |
4808 | static void | |
4809 | init_cutu_and_read_dies_no_follow (struct dwarf2_per_cu_data *this_cu, | |
4810 | struct dwarf2_section_info *abbrev_section, | |
3019eac3 | 4811 | struct dwo_file *dwo_file, |
dee91e82 DE |
4812 | die_reader_func_ftype *die_reader_func, |
4813 | void *data) | |
4814 | { | |
4815 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
8a0459fd | 4816 | struct dwarf2_section_info *section = this_cu->section; |
3019eac3 | 4817 | bfd *abfd = section->asection->owner; |
dee91e82 DE |
4818 | struct dwarf2_cu cu; |
4819 | gdb_byte *begin_info_ptr, *info_ptr; | |
4820 | struct die_reader_specs reader; | |
4821 | struct cleanup *cleanups; | |
4822 | struct die_info *comp_unit_die; | |
4823 | int has_children; | |
4824 | ||
09406207 DE |
4825 | if (dwarf2_die_debug) |
4826 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset 0x%x\n", | |
4827 | this_cu->is_debug_types ? "type" : "comp", | |
4828 | this_cu->offset.sect_off); | |
4829 | ||
dee91e82 DE |
4830 | gdb_assert (this_cu->cu == NULL); |
4831 | ||
dee91e82 DE |
4832 | /* This is cheap if the section is already read in. */ |
4833 | dwarf2_read_section (objfile, section); | |
4834 | ||
4835 | init_one_comp_unit (&cu, this_cu); | |
4836 | ||
4837 | cleanups = make_cleanup (free_stack_comp_unit, &cu); | |
4838 | ||
4839 | begin_info_ptr = info_ptr = section->buffer + this_cu->offset.sect_off; | |
4bdcc0c1 DE |
4840 | info_ptr = read_and_check_comp_unit_head (&cu.header, section, |
4841 | abbrev_section, info_ptr, | |
3019eac3 | 4842 | this_cu->is_debug_types); |
dee91e82 | 4843 | |
1ce1cefd | 4844 | this_cu->length = get_cu_length (&cu.header); |
dee91e82 DE |
4845 | |
4846 | /* Skip dummy compilation units. */ | |
4847 | if (info_ptr >= begin_info_ptr + this_cu->length | |
4848 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
c906108c | 4849 | { |
dee91e82 | 4850 | do_cleanups (cleanups); |
21b2bd31 | 4851 | return; |
93311388 | 4852 | } |
72bf9492 | 4853 | |
dee91e82 DE |
4854 | dwarf2_read_abbrevs (&cu, abbrev_section); |
4855 | make_cleanup (dwarf2_free_abbrev_table, &cu); | |
4856 | ||
3019eac3 | 4857 | init_cu_die_reader (&reader, &cu, section, dwo_file); |
dee91e82 DE |
4858 | info_ptr = read_full_die (&reader, &comp_unit_die, info_ptr, &has_children); |
4859 | ||
4860 | die_reader_func (&reader, info_ptr, comp_unit_die, has_children, data); | |
4861 | ||
4862 | do_cleanups (cleanups); | |
4863 | } | |
4864 | ||
3019eac3 DE |
4865 | /* Read a CU/TU, except that this does not look for DW_AT_GNU_dwo_name and |
4866 | does not lookup the specified DWO file. | |
4867 | This cannot be used to read DWO files. | |
dee91e82 DE |
4868 | |
4869 | THIS_CU->cu is always freed when done. | |
3019eac3 DE |
4870 | This is done in order to not leave THIS_CU->cu in a state where we have |
4871 | to care whether it refers to the "main" CU or the DWO CU. | |
4872 | We can revisit this if the data shows there's a performance issue. */ | |
dee91e82 DE |
4873 | |
4874 | static void | |
4875 | init_cutu_and_read_dies_simple (struct dwarf2_per_cu_data *this_cu, | |
4876 | die_reader_func_ftype *die_reader_func, | |
4877 | void *data) | |
4878 | { | |
4879 | init_cutu_and_read_dies_no_follow (this_cu, | |
36586728 | 4880 | get_abbrev_section_for_cu (this_cu), |
3019eac3 | 4881 | NULL, |
dee91e82 DE |
4882 | die_reader_func, data); |
4883 | } | |
0018ea6f DE |
4884 | \f |
4885 | /* Type Unit Groups. | |
dee91e82 | 4886 | |
0018ea6f DE |
4887 | Type Unit Groups are a way to collapse the set of all TUs (type units) into |
4888 | a more manageable set. The grouping is done by DW_AT_stmt_list entry | |
4889 | so that all types coming from the same compilation (.o file) are grouped | |
4890 | together. A future step could be to put the types in the same symtab as | |
4891 | the CU the types ultimately came from. */ | |
ff013f42 | 4892 | |
f4dc4d17 DE |
4893 | static hashval_t |
4894 | hash_type_unit_group (const void *item) | |
4895 | { | |
094b34ac | 4896 | const struct type_unit_group *tu_group = item; |
f4dc4d17 | 4897 | |
094b34ac | 4898 | return hash_stmt_list_entry (&tu_group->hash); |
f4dc4d17 | 4899 | } |
348e048f DE |
4900 | |
4901 | static int | |
f4dc4d17 | 4902 | eq_type_unit_group (const void *item_lhs, const void *item_rhs) |
348e048f | 4903 | { |
f4dc4d17 DE |
4904 | const struct type_unit_group *lhs = item_lhs; |
4905 | const struct type_unit_group *rhs = item_rhs; | |
348e048f | 4906 | |
094b34ac | 4907 | return eq_stmt_list_entry (&lhs->hash, &rhs->hash); |
f4dc4d17 | 4908 | } |
348e048f | 4909 | |
f4dc4d17 DE |
4910 | /* Allocate a hash table for type unit groups. */ |
4911 | ||
4912 | static htab_t | |
4913 | allocate_type_unit_groups_table (void) | |
4914 | { | |
4915 | return htab_create_alloc_ex (3, | |
4916 | hash_type_unit_group, | |
4917 | eq_type_unit_group, | |
4918 | NULL, | |
4919 | &dwarf2_per_objfile->objfile->objfile_obstack, | |
4920 | hashtab_obstack_allocate, | |
4921 | dummy_obstack_deallocate); | |
4922 | } | |
dee91e82 | 4923 | |
f4dc4d17 DE |
4924 | /* Type units that don't have DW_AT_stmt_list are grouped into their own |
4925 | partial symtabs. We combine several TUs per psymtab to not let the size | |
4926 | of any one psymtab grow too big. */ | |
4927 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB (1 << 31) | |
4928 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE 10 | |
dee91e82 | 4929 | |
094b34ac | 4930 | /* Helper routine for get_type_unit_group. |
f4dc4d17 DE |
4931 | Create the type_unit_group object used to hold one or more TUs. */ |
4932 | ||
4933 | static struct type_unit_group * | |
094b34ac | 4934 | create_type_unit_group (struct dwarf2_cu *cu, sect_offset line_offset_struct) |
f4dc4d17 DE |
4935 | { |
4936 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
094b34ac | 4937 | struct dwarf2_per_cu_data *per_cu; |
f4dc4d17 | 4938 | struct type_unit_group *tu_group; |
f4dc4d17 DE |
4939 | |
4940 | tu_group = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
4941 | struct type_unit_group); | |
094b34ac | 4942 | per_cu = &tu_group->per_cu; |
f4dc4d17 DE |
4943 | per_cu->objfile = objfile; |
4944 | per_cu->is_debug_types = 1; | |
796a7ff8 | 4945 | per_cu->type_unit_group = tu_group; |
f4dc4d17 | 4946 | |
094b34ac DE |
4947 | if (dwarf2_per_objfile->using_index) |
4948 | { | |
4949 | per_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
4950 | struct dwarf2_per_cu_quick_data); | |
4951 | tu_group->t.first_tu = cu->per_cu; | |
4952 | } | |
4953 | else | |
4954 | { | |
4955 | unsigned int line_offset = line_offset_struct.sect_off; | |
4956 | struct partial_symtab *pst; | |
4957 | char *name; | |
4958 | ||
4959 | /* Give the symtab a useful name for debug purposes. */ | |
4960 | if ((line_offset & NO_STMT_LIST_TYPE_UNIT_PSYMTAB) != 0) | |
4961 | name = xstrprintf ("<type_units_%d>", | |
4962 | (line_offset & ~NO_STMT_LIST_TYPE_UNIT_PSYMTAB)); | |
4963 | else | |
4964 | name = xstrprintf ("<type_units_at_0x%x>", line_offset); | |
4965 | ||
4966 | pst = create_partial_symtab (per_cu, name); | |
4967 | pst->anonymous = 1; | |
f4dc4d17 | 4968 | |
094b34ac DE |
4969 | xfree (name); |
4970 | } | |
f4dc4d17 | 4971 | |
094b34ac DE |
4972 | tu_group->hash.dwo_unit = cu->dwo_unit; |
4973 | tu_group->hash.line_offset = line_offset_struct; | |
f4dc4d17 DE |
4974 | |
4975 | return tu_group; | |
4976 | } | |
4977 | ||
094b34ac DE |
4978 | /* Look up the type_unit_group for type unit CU, and create it if necessary. |
4979 | STMT_LIST is a DW_AT_stmt_list attribute. */ | |
f4dc4d17 DE |
4980 | |
4981 | static struct type_unit_group * | |
094b34ac | 4982 | get_type_unit_group (struct dwarf2_cu *cu, struct attribute *stmt_list) |
f4dc4d17 DE |
4983 | { |
4984 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; | |
4985 | struct type_unit_group *tu_group; | |
4986 | void **slot; | |
4987 | unsigned int line_offset; | |
4988 | struct type_unit_group type_unit_group_for_lookup; | |
4989 | ||
4990 | if (dwarf2_per_objfile->type_unit_groups == NULL) | |
4991 | { | |
4992 | dwarf2_per_objfile->type_unit_groups = | |
4993 | allocate_type_unit_groups_table (); | |
4994 | } | |
4995 | ||
4996 | /* Do we need to create a new group, or can we use an existing one? */ | |
4997 | ||
4998 | if (stmt_list) | |
4999 | { | |
5000 | line_offset = DW_UNSND (stmt_list); | |
5001 | ++tu_stats->nr_symtab_sharers; | |
5002 | } | |
5003 | else | |
5004 | { | |
5005 | /* Ugh, no stmt_list. Rare, but we have to handle it. | |
5006 | We can do various things here like create one group per TU or | |
5007 | spread them over multiple groups to split up the expansion work. | |
5008 | To avoid worst case scenarios (too many groups or too large groups) | |
5009 | we, umm, group them in bunches. */ | |
5010 | line_offset = (NO_STMT_LIST_TYPE_UNIT_PSYMTAB | |
5011 | | (tu_stats->nr_stmt_less_type_units | |
5012 | / NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE)); | |
5013 | ++tu_stats->nr_stmt_less_type_units; | |
5014 | } | |
5015 | ||
094b34ac DE |
5016 | type_unit_group_for_lookup.hash.dwo_unit = cu->dwo_unit; |
5017 | type_unit_group_for_lookup.hash.line_offset.sect_off = line_offset; | |
f4dc4d17 DE |
5018 | slot = htab_find_slot (dwarf2_per_objfile->type_unit_groups, |
5019 | &type_unit_group_for_lookup, INSERT); | |
5020 | if (*slot != NULL) | |
5021 | { | |
5022 | tu_group = *slot; | |
5023 | gdb_assert (tu_group != NULL); | |
5024 | } | |
5025 | else | |
5026 | { | |
5027 | sect_offset line_offset_struct; | |
5028 | ||
5029 | line_offset_struct.sect_off = line_offset; | |
094b34ac | 5030 | tu_group = create_type_unit_group (cu, line_offset_struct); |
f4dc4d17 DE |
5031 | *slot = tu_group; |
5032 | ++tu_stats->nr_symtabs; | |
5033 | } | |
5034 | ||
5035 | return tu_group; | |
5036 | } | |
5037 | ||
5038 | /* Struct used to sort TUs by their abbreviation table offset. */ | |
5039 | ||
5040 | struct tu_abbrev_offset | |
5041 | { | |
5042 | struct signatured_type *sig_type; | |
5043 | sect_offset abbrev_offset; | |
5044 | }; | |
5045 | ||
5046 | /* Helper routine for build_type_unit_groups, passed to qsort. */ | |
5047 | ||
5048 | static int | |
5049 | sort_tu_by_abbrev_offset (const void *ap, const void *bp) | |
5050 | { | |
5051 | const struct tu_abbrev_offset * const *a = ap; | |
5052 | const struct tu_abbrev_offset * const *b = bp; | |
5053 | unsigned int aoff = (*a)->abbrev_offset.sect_off; | |
5054 | unsigned int boff = (*b)->abbrev_offset.sect_off; | |
5055 | ||
5056 | return (aoff > boff) - (aoff < boff); | |
5057 | } | |
5058 | ||
5059 | /* A helper function to add a type_unit_group to a table. */ | |
5060 | ||
5061 | static int | |
5062 | add_type_unit_group_to_table (void **slot, void *datum) | |
5063 | { | |
5064 | struct type_unit_group *tu_group = *slot; | |
5065 | struct type_unit_group ***datap = datum; | |
5066 | ||
5067 | **datap = tu_group; | |
5068 | ++*datap; | |
5069 | ||
5070 | return 1; | |
5071 | } | |
5072 | ||
5073 | /* Efficiently read all the type units, calling init_cutu_and_read_dies on | |
5074 | each one passing FUNC,DATA. | |
5075 | ||
5076 | The efficiency is because we sort TUs by the abbrev table they use and | |
5077 | only read each abbrev table once. In one program there are 200K TUs | |
5078 | sharing 8K abbrev tables. | |
5079 | ||
5080 | The main purpose of this function is to support building the | |
5081 | dwarf2_per_objfile->type_unit_groups table. | |
5082 | TUs typically share the DW_AT_stmt_list of the CU they came from, so we | |
5083 | can collapse the search space by grouping them by stmt_list. | |
5084 | The savings can be significant, in the same program from above the 200K TUs | |
5085 | share 8K stmt_list tables. | |
5086 | ||
5087 | FUNC is expected to call get_type_unit_group, which will create the | |
5088 | struct type_unit_group if necessary and add it to | |
5089 | dwarf2_per_objfile->type_unit_groups. */ | |
5090 | ||
5091 | static void | |
5092 | build_type_unit_groups (die_reader_func_ftype *func, void *data) | |
5093 | { | |
5094 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
5095 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; | |
5096 | struct cleanup *cleanups; | |
5097 | struct abbrev_table *abbrev_table; | |
5098 | sect_offset abbrev_offset; | |
5099 | struct tu_abbrev_offset *sorted_by_abbrev; | |
5100 | struct type_unit_group **iter; | |
5101 | int i; | |
5102 | ||
5103 | /* It's up to the caller to not call us multiple times. */ | |
5104 | gdb_assert (dwarf2_per_objfile->type_unit_groups == NULL); | |
5105 | ||
5106 | if (dwarf2_per_objfile->n_type_units == 0) | |
5107 | return; | |
5108 | ||
5109 | /* TUs typically share abbrev tables, and there can be way more TUs than | |
5110 | abbrev tables. Sort by abbrev table to reduce the number of times we | |
5111 | read each abbrev table in. | |
5112 | Alternatives are to punt or to maintain a cache of abbrev tables. | |
5113 | This is simpler and efficient enough for now. | |
5114 | ||
5115 | Later we group TUs by their DW_AT_stmt_list value (as this defines the | |
5116 | symtab to use). Typically TUs with the same abbrev offset have the same | |
5117 | stmt_list value too so in practice this should work well. | |
5118 | ||
5119 | The basic algorithm here is: | |
5120 | ||
5121 | sort TUs by abbrev table | |
5122 | for each TU with same abbrev table: | |
5123 | read abbrev table if first user | |
5124 | read TU top level DIE | |
5125 | [IWBN if DWO skeletons had DW_AT_stmt_list] | |
5126 | call FUNC */ | |
5127 | ||
5128 | if (dwarf2_read_debug) | |
5129 | fprintf_unfiltered (gdb_stdlog, "Building type unit groups ...\n"); | |
5130 | ||
5131 | /* Sort in a separate table to maintain the order of all_type_units | |
5132 | for .gdb_index: TU indices directly index all_type_units. */ | |
5133 | sorted_by_abbrev = XNEWVEC (struct tu_abbrev_offset, | |
5134 | dwarf2_per_objfile->n_type_units); | |
5135 | for (i = 0; i < dwarf2_per_objfile->n_type_units; ++i) | |
5136 | { | |
5137 | struct signatured_type *sig_type = dwarf2_per_objfile->all_type_units[i]; | |
5138 | ||
5139 | sorted_by_abbrev[i].sig_type = sig_type; | |
5140 | sorted_by_abbrev[i].abbrev_offset = | |
8a0459fd | 5141 | read_abbrev_offset (sig_type->per_cu.section, |
f4dc4d17 DE |
5142 | sig_type->per_cu.offset); |
5143 | } | |
5144 | cleanups = make_cleanup (xfree, sorted_by_abbrev); | |
5145 | qsort (sorted_by_abbrev, dwarf2_per_objfile->n_type_units, | |
5146 | sizeof (struct tu_abbrev_offset), sort_tu_by_abbrev_offset); | |
5147 | ||
094b34ac DE |
5148 | /* Note: In the .gdb_index case, get_type_unit_group may have already been |
5149 | called any number of times, so we don't reset tu_stats here. */ | |
5150 | ||
f4dc4d17 DE |
5151 | abbrev_offset.sect_off = ~(unsigned) 0; |
5152 | abbrev_table = NULL; | |
5153 | make_cleanup (abbrev_table_free_cleanup, &abbrev_table); | |
5154 | ||
5155 | for (i = 0; i < dwarf2_per_objfile->n_type_units; ++i) | |
5156 | { | |
5157 | const struct tu_abbrev_offset *tu = &sorted_by_abbrev[i]; | |
5158 | ||
5159 | /* Switch to the next abbrev table if necessary. */ | |
5160 | if (abbrev_table == NULL | |
5161 | || tu->abbrev_offset.sect_off != abbrev_offset.sect_off) | |
5162 | { | |
5163 | if (abbrev_table != NULL) | |
5164 | { | |
5165 | abbrev_table_free (abbrev_table); | |
5166 | /* Reset to NULL in case abbrev_table_read_table throws | |
5167 | an error: abbrev_table_free_cleanup will get called. */ | |
5168 | abbrev_table = NULL; | |
5169 | } | |
5170 | abbrev_offset = tu->abbrev_offset; | |
5171 | abbrev_table = | |
5172 | abbrev_table_read_table (&dwarf2_per_objfile->abbrev, | |
5173 | abbrev_offset); | |
5174 | ++tu_stats->nr_uniq_abbrev_tables; | |
5175 | } | |
5176 | ||
5177 | init_cutu_and_read_dies (&tu->sig_type->per_cu, abbrev_table, 0, 0, | |
5178 | func, data); | |
5179 | } | |
5180 | ||
5181 | /* Create a vector of pointers to primary type units to make it easy to | |
5182 | iterate over them and CUs. See dw2_get_primary_cu. */ | |
5183 | dwarf2_per_objfile->n_type_unit_groups = | |
5184 | htab_elements (dwarf2_per_objfile->type_unit_groups); | |
5185 | dwarf2_per_objfile->all_type_unit_groups = | |
5186 | obstack_alloc (&objfile->objfile_obstack, | |
5187 | dwarf2_per_objfile->n_type_unit_groups | |
5188 | * sizeof (struct type_unit_group *)); | |
5189 | iter = &dwarf2_per_objfile->all_type_unit_groups[0]; | |
5190 | htab_traverse_noresize (dwarf2_per_objfile->type_unit_groups, | |
5191 | add_type_unit_group_to_table, &iter); | |
5192 | gdb_assert (iter - &dwarf2_per_objfile->all_type_unit_groups[0] | |
5193 | == dwarf2_per_objfile->n_type_unit_groups); | |
5194 | ||
5195 | do_cleanups (cleanups); | |
5196 | ||
5197 | if (dwarf2_read_debug) | |
5198 | { | |
5199 | fprintf_unfiltered (gdb_stdlog, "Done building type unit groups:\n"); | |
5200 | fprintf_unfiltered (gdb_stdlog, " %d TUs\n", | |
5201 | dwarf2_per_objfile->n_type_units); | |
5202 | fprintf_unfiltered (gdb_stdlog, " %d uniq abbrev tables\n", | |
5203 | tu_stats->nr_uniq_abbrev_tables); | |
5204 | fprintf_unfiltered (gdb_stdlog, " %d symtabs from stmt_list entries\n", | |
5205 | tu_stats->nr_symtabs); | |
5206 | fprintf_unfiltered (gdb_stdlog, " %d symtab sharers\n", | |
5207 | tu_stats->nr_symtab_sharers); | |
5208 | fprintf_unfiltered (gdb_stdlog, " %d type units without a stmt_list\n", | |
5209 | tu_stats->nr_stmt_less_type_units); | |
5210 | } | |
5211 | } | |
0018ea6f DE |
5212 | \f |
5213 | /* Partial symbol tables. */ | |
5214 | ||
5215 | /* Create a psymtab named NAME and assign it to PER_CU. | |
5216 | ||
5217 | The caller must fill in the following details: | |
5218 | dirname, textlow, texthigh. */ | |
5219 | ||
5220 | static struct partial_symtab * | |
5221 | create_partial_symtab (struct dwarf2_per_cu_data *per_cu, const char *name) | |
5222 | { | |
5223 | struct objfile *objfile = per_cu->objfile; | |
5224 | struct partial_symtab *pst; | |
5225 | ||
5226 | pst = start_psymtab_common (objfile, objfile->section_offsets, | |
5227 | name, 0, | |
5228 | objfile->global_psymbols.next, | |
5229 | objfile->static_psymbols.next); | |
5230 | ||
5231 | pst->psymtabs_addrmap_supported = 1; | |
5232 | ||
5233 | /* This is the glue that links PST into GDB's symbol API. */ | |
5234 | pst->read_symtab_private = per_cu; | |
5235 | pst->read_symtab = dwarf2_read_symtab; | |
5236 | per_cu->v.psymtab = pst; | |
5237 | ||
5238 | return pst; | |
5239 | } | |
5240 | ||
5241 | /* die_reader_func for process_psymtab_comp_unit. */ | |
5242 | ||
5243 | static void | |
5244 | process_psymtab_comp_unit_reader (const struct die_reader_specs *reader, | |
5245 | gdb_byte *info_ptr, | |
5246 | struct die_info *comp_unit_die, | |
5247 | int has_children, | |
5248 | void *data) | |
5249 | { | |
5250 | struct dwarf2_cu *cu = reader->cu; | |
5251 | struct objfile *objfile = cu->objfile; | |
5252 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; | |
5253 | struct attribute *attr; | |
5254 | CORE_ADDR baseaddr; | |
5255 | CORE_ADDR best_lowpc = 0, best_highpc = 0; | |
5256 | struct partial_symtab *pst; | |
5257 | int has_pc_info; | |
5258 | const char *filename; | |
5259 | int *want_partial_unit_ptr = data; | |
5260 | ||
5261 | if (comp_unit_die->tag == DW_TAG_partial_unit | |
5262 | && (want_partial_unit_ptr == NULL | |
5263 | || !*want_partial_unit_ptr)) | |
5264 | return; | |
5265 | ||
5266 | gdb_assert (! per_cu->is_debug_types); | |
5267 | ||
5268 | prepare_one_comp_unit (cu, comp_unit_die, language_minimal); | |
5269 | ||
5270 | cu->list_in_scope = &file_symbols; | |
5271 | ||
5272 | /* Allocate a new partial symbol table structure. */ | |
5273 | attr = dwarf2_attr (comp_unit_die, DW_AT_name, cu); | |
5274 | if (attr == NULL || !DW_STRING (attr)) | |
5275 | filename = ""; | |
5276 | else | |
5277 | filename = DW_STRING (attr); | |
5278 | ||
5279 | pst = create_partial_symtab (per_cu, filename); | |
5280 | ||
5281 | /* This must be done before calling dwarf2_build_include_psymtabs. */ | |
5282 | attr = dwarf2_attr (comp_unit_die, DW_AT_comp_dir, cu); | |
5283 | if (attr != NULL) | |
5284 | pst->dirname = DW_STRING (attr); | |
5285 | ||
5286 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
5287 | ||
5288 | dwarf2_find_base_address (comp_unit_die, cu); | |
5289 | ||
5290 | /* Possibly set the default values of LOWPC and HIGHPC from | |
5291 | `DW_AT_ranges'. */ | |
5292 | has_pc_info = dwarf2_get_pc_bounds (comp_unit_die, &best_lowpc, | |
5293 | &best_highpc, cu, pst); | |
5294 | if (has_pc_info == 1 && best_lowpc < best_highpc) | |
5295 | /* Store the contiguous range if it is not empty; it can be empty for | |
5296 | CUs with no code. */ | |
5297 | addrmap_set_empty (objfile->psymtabs_addrmap, | |
5298 | best_lowpc + baseaddr, | |
5299 | best_highpc + baseaddr - 1, pst); | |
5300 | ||
5301 | /* Check if comp unit has_children. | |
5302 | If so, read the rest of the partial symbols from this comp unit. | |
5303 | If not, there's no more debug_info for this comp unit. */ | |
5304 | if (has_children) | |
5305 | { | |
5306 | struct partial_die_info *first_die; | |
5307 | CORE_ADDR lowpc, highpc; | |
5308 | ||
5309 | lowpc = ((CORE_ADDR) -1); | |
5310 | highpc = ((CORE_ADDR) 0); | |
5311 | ||
5312 | first_die = load_partial_dies (reader, info_ptr, 1); | |
5313 | ||
5314 | scan_partial_symbols (first_die, &lowpc, &highpc, | |
5315 | ! has_pc_info, cu); | |
5316 | ||
5317 | /* If we didn't find a lowpc, set it to highpc to avoid | |
5318 | complaints from `maint check'. */ | |
5319 | if (lowpc == ((CORE_ADDR) -1)) | |
5320 | lowpc = highpc; | |
5321 | ||
5322 | /* If the compilation unit didn't have an explicit address range, | |
5323 | then use the information extracted from its child dies. */ | |
5324 | if (! has_pc_info) | |
5325 | { | |
5326 | best_lowpc = lowpc; | |
5327 | best_highpc = highpc; | |
5328 | } | |
5329 | } | |
5330 | pst->textlow = best_lowpc + baseaddr; | |
5331 | pst->texthigh = best_highpc + baseaddr; | |
5332 | ||
5333 | pst->n_global_syms = objfile->global_psymbols.next - | |
5334 | (objfile->global_psymbols.list + pst->globals_offset); | |
5335 | pst->n_static_syms = objfile->static_psymbols.next - | |
5336 | (objfile->static_psymbols.list + pst->statics_offset); | |
5337 | sort_pst_symbols (objfile, pst); | |
5338 | ||
5339 | if (!VEC_empty (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs)) | |
5340 | { | |
5341 | int i; | |
5342 | int len = VEC_length (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs); | |
5343 | struct dwarf2_per_cu_data *iter; | |
5344 | ||
5345 | /* Fill in 'dependencies' here; we fill in 'users' in a | |
5346 | post-pass. */ | |
5347 | pst->number_of_dependencies = len; | |
5348 | pst->dependencies = obstack_alloc (&objfile->objfile_obstack, | |
5349 | len * sizeof (struct symtab *)); | |
5350 | for (i = 0; | |
5351 | VEC_iterate (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs, | |
5352 | i, iter); | |
5353 | ++i) | |
5354 | pst->dependencies[i] = iter->v.psymtab; | |
5355 | ||
5356 | VEC_free (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs); | |
5357 | } | |
5358 | ||
5359 | /* Get the list of files included in the current compilation unit, | |
5360 | and build a psymtab for each of them. */ | |
5361 | dwarf2_build_include_psymtabs (cu, comp_unit_die, pst); | |
5362 | ||
5363 | if (dwarf2_read_debug) | |
5364 | { | |
5365 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
5366 | ||
5367 | fprintf_unfiltered (gdb_stdlog, | |
5368 | "Psymtab for %s unit @0x%x: %s - %s" | |
5369 | ", %d global, %d static syms\n", | |
5370 | per_cu->is_debug_types ? "type" : "comp", | |
5371 | per_cu->offset.sect_off, | |
5372 | paddress (gdbarch, pst->textlow), | |
5373 | paddress (gdbarch, pst->texthigh), | |
5374 | pst->n_global_syms, pst->n_static_syms); | |
5375 | } | |
5376 | } | |
5377 | ||
5378 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
5379 | Process compilation unit THIS_CU for a psymtab. */ | |
5380 | ||
5381 | static void | |
5382 | process_psymtab_comp_unit (struct dwarf2_per_cu_data *this_cu, | |
5383 | int want_partial_unit) | |
5384 | { | |
5385 | /* If this compilation unit was already read in, free the | |
5386 | cached copy in order to read it in again. This is | |
5387 | necessary because we skipped some symbols when we first | |
5388 | read in the compilation unit (see load_partial_dies). | |
5389 | This problem could be avoided, but the benefit is unclear. */ | |
5390 | if (this_cu->cu != NULL) | |
5391 | free_one_cached_comp_unit (this_cu); | |
5392 | ||
5393 | gdb_assert (! this_cu->is_debug_types); | |
5394 | init_cutu_and_read_dies (this_cu, NULL, 0, 0, | |
5395 | process_psymtab_comp_unit_reader, | |
5396 | &want_partial_unit); | |
5397 | ||
5398 | /* Age out any secondary CUs. */ | |
5399 | age_cached_comp_units (); | |
5400 | } | |
f4dc4d17 DE |
5401 | |
5402 | /* Reader function for build_type_psymtabs. */ | |
5403 | ||
5404 | static void | |
5405 | build_type_psymtabs_reader (const struct die_reader_specs *reader, | |
5406 | gdb_byte *info_ptr, | |
5407 | struct die_info *type_unit_die, | |
5408 | int has_children, | |
5409 | void *data) | |
5410 | { | |
5411 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
5412 | struct dwarf2_cu *cu = reader->cu; | |
5413 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; | |
5414 | struct type_unit_group *tu_group; | |
5415 | struct attribute *attr; | |
5416 | struct partial_die_info *first_die; | |
5417 | CORE_ADDR lowpc, highpc; | |
5418 | struct partial_symtab *pst; | |
5419 | ||
5420 | gdb_assert (data == NULL); | |
5421 | ||
5422 | if (! has_children) | |
5423 | return; | |
5424 | ||
5425 | attr = dwarf2_attr_no_follow (type_unit_die, DW_AT_stmt_list); | |
094b34ac | 5426 | tu_group = get_type_unit_group (cu, attr); |
f4dc4d17 | 5427 | |
094b34ac | 5428 | VEC_safe_push (dwarf2_per_cu_ptr, tu_group->t.tus, per_cu); |
f4dc4d17 DE |
5429 | |
5430 | prepare_one_comp_unit (cu, type_unit_die, language_minimal); | |
5431 | cu->list_in_scope = &file_symbols; | |
5432 | pst = create_partial_symtab (per_cu, ""); | |
5433 | pst->anonymous = 1; | |
5434 | ||
5435 | first_die = load_partial_dies (reader, info_ptr, 1); | |
5436 | ||
5437 | lowpc = (CORE_ADDR) -1; | |
5438 | highpc = (CORE_ADDR) 0; | |
5439 | scan_partial_symbols (first_die, &lowpc, &highpc, 0, cu); | |
5440 | ||
5441 | pst->n_global_syms = objfile->global_psymbols.next - | |
5442 | (objfile->global_psymbols.list + pst->globals_offset); | |
5443 | pst->n_static_syms = objfile->static_psymbols.next - | |
5444 | (objfile->static_psymbols.list + pst->statics_offset); | |
5c80ed9d | 5445 | sort_pst_symbols (objfile, pst); |
f4dc4d17 DE |
5446 | } |
5447 | ||
5448 | /* Traversal function for build_type_psymtabs. */ | |
5449 | ||
5450 | static int | |
5451 | build_type_psymtab_dependencies (void **slot, void *info) | |
5452 | { | |
5453 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
5454 | struct type_unit_group *tu_group = (struct type_unit_group *) *slot; | |
094b34ac | 5455 | struct dwarf2_per_cu_data *per_cu = &tu_group->per_cu; |
f4dc4d17 | 5456 | struct partial_symtab *pst = per_cu->v.psymtab; |
094b34ac | 5457 | int len = VEC_length (dwarf2_per_cu_ptr, tu_group->t.tus); |
f4dc4d17 DE |
5458 | struct dwarf2_per_cu_data *iter; |
5459 | int i; | |
5460 | ||
5461 | gdb_assert (len > 0); | |
5462 | ||
5463 | pst->number_of_dependencies = len; | |
5464 | pst->dependencies = obstack_alloc (&objfile->objfile_obstack, | |
5465 | len * sizeof (struct psymtab *)); | |
5466 | for (i = 0; | |
094b34ac | 5467 | VEC_iterate (dwarf2_per_cu_ptr, tu_group->t.tus, i, iter); |
f4dc4d17 DE |
5468 | ++i) |
5469 | { | |
5470 | pst->dependencies[i] = iter->v.psymtab; | |
796a7ff8 | 5471 | iter->type_unit_group = tu_group; |
f4dc4d17 DE |
5472 | } |
5473 | ||
094b34ac | 5474 | VEC_free (dwarf2_per_cu_ptr, tu_group->t.tus); |
348e048f DE |
5475 | |
5476 | return 1; | |
5477 | } | |
5478 | ||
5479 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
5480 | Build partial symbol tables for the .debug_types comp-units. */ | |
5481 | ||
5482 | static void | |
5483 | build_type_psymtabs (struct objfile *objfile) | |
5484 | { | |
0e50663e | 5485 | if (! create_all_type_units (objfile)) |
348e048f DE |
5486 | return; |
5487 | ||
f4dc4d17 DE |
5488 | build_type_unit_groups (build_type_psymtabs_reader, NULL); |
5489 | ||
5490 | /* Now that all TUs have been processed we can fill in the dependencies. */ | |
5491 | htab_traverse_noresize (dwarf2_per_objfile->type_unit_groups, | |
5492 | build_type_psymtab_dependencies, NULL); | |
348e048f DE |
5493 | } |
5494 | ||
60606b2c TT |
5495 | /* A cleanup function that clears objfile's psymtabs_addrmap field. */ |
5496 | ||
5497 | static void | |
5498 | psymtabs_addrmap_cleanup (void *o) | |
5499 | { | |
5500 | struct objfile *objfile = o; | |
ec61707d | 5501 | |
60606b2c TT |
5502 | objfile->psymtabs_addrmap = NULL; |
5503 | } | |
5504 | ||
95554aad TT |
5505 | /* Compute the 'user' field for each psymtab in OBJFILE. */ |
5506 | ||
5507 | static void | |
5508 | set_partial_user (struct objfile *objfile) | |
5509 | { | |
5510 | int i; | |
5511 | ||
5512 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) | |
5513 | { | |
5514 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); | |
5515 | struct partial_symtab *pst = per_cu->v.psymtab; | |
5516 | int j; | |
5517 | ||
36586728 TT |
5518 | if (pst == NULL) |
5519 | continue; | |
5520 | ||
95554aad TT |
5521 | for (j = 0; j < pst->number_of_dependencies; ++j) |
5522 | { | |
5523 | /* Set the 'user' field only if it is not already set. */ | |
5524 | if (pst->dependencies[j]->user == NULL) | |
5525 | pst->dependencies[j]->user = pst; | |
5526 | } | |
5527 | } | |
5528 | } | |
5529 | ||
93311388 DE |
5530 | /* Build the partial symbol table by doing a quick pass through the |
5531 | .debug_info and .debug_abbrev sections. */ | |
72bf9492 | 5532 | |
93311388 | 5533 | static void |
c67a9c90 | 5534 | dwarf2_build_psymtabs_hard (struct objfile *objfile) |
93311388 | 5535 | { |
60606b2c TT |
5536 | struct cleanup *back_to, *addrmap_cleanup; |
5537 | struct obstack temp_obstack; | |
21b2bd31 | 5538 | int i; |
93311388 | 5539 | |
45cfd468 DE |
5540 | if (dwarf2_read_debug) |
5541 | { | |
5542 | fprintf_unfiltered (gdb_stdlog, "Building psymtabs of objfile %s ...\n", | |
5543 | objfile->name); | |
5544 | } | |
5545 | ||
98bfdba5 PA |
5546 | dwarf2_per_objfile->reading_partial_symbols = 1; |
5547 | ||
be391dca | 5548 | dwarf2_read_section (objfile, &dwarf2_per_objfile->info); |
91c24f0a | 5549 | |
93311388 DE |
5550 | /* Any cached compilation units will be linked by the per-objfile |
5551 | read_in_chain. Make sure to free them when we're done. */ | |
5552 | back_to = make_cleanup (free_cached_comp_units, NULL); | |
72bf9492 | 5553 | |
348e048f DE |
5554 | build_type_psymtabs (objfile); |
5555 | ||
93311388 | 5556 | create_all_comp_units (objfile); |
c906108c | 5557 | |
60606b2c TT |
5558 | /* Create a temporary address map on a temporary obstack. We later |
5559 | copy this to the final obstack. */ | |
5560 | obstack_init (&temp_obstack); | |
5561 | make_cleanup_obstack_free (&temp_obstack); | |
5562 | objfile->psymtabs_addrmap = addrmap_create_mutable (&temp_obstack); | |
5563 | addrmap_cleanup = make_cleanup (psymtabs_addrmap_cleanup, objfile); | |
72bf9492 | 5564 | |
21b2bd31 | 5565 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
93311388 | 5566 | { |
21b2bd31 | 5567 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
aaa75496 | 5568 | |
95554aad | 5569 | process_psymtab_comp_unit (per_cu, 0); |
c906108c | 5570 | } |
ff013f42 | 5571 | |
95554aad TT |
5572 | set_partial_user (objfile); |
5573 | ||
ff013f42 JK |
5574 | objfile->psymtabs_addrmap = addrmap_create_fixed (objfile->psymtabs_addrmap, |
5575 | &objfile->objfile_obstack); | |
60606b2c | 5576 | discard_cleanups (addrmap_cleanup); |
ff013f42 | 5577 | |
ae038cb0 | 5578 | do_cleanups (back_to); |
45cfd468 DE |
5579 | |
5580 | if (dwarf2_read_debug) | |
5581 | fprintf_unfiltered (gdb_stdlog, "Done building psymtabs of %s\n", | |
5582 | objfile->name); | |
ae038cb0 DJ |
5583 | } |
5584 | ||
3019eac3 | 5585 | /* die_reader_func for load_partial_comp_unit. */ |
ae038cb0 DJ |
5586 | |
5587 | static void | |
dee91e82 DE |
5588 | load_partial_comp_unit_reader (const struct die_reader_specs *reader, |
5589 | gdb_byte *info_ptr, | |
5590 | struct die_info *comp_unit_die, | |
5591 | int has_children, | |
5592 | void *data) | |
ae038cb0 | 5593 | { |
dee91e82 | 5594 | struct dwarf2_cu *cu = reader->cu; |
ae038cb0 | 5595 | |
95554aad | 5596 | prepare_one_comp_unit (cu, comp_unit_die, language_minimal); |
ae038cb0 | 5597 | |
ae038cb0 DJ |
5598 | /* Check if comp unit has_children. |
5599 | If so, read the rest of the partial symbols from this comp unit. | |
0963b4bd | 5600 | If not, there's no more debug_info for this comp unit. */ |
d85a05f0 | 5601 | if (has_children) |
dee91e82 DE |
5602 | load_partial_dies (reader, info_ptr, 0); |
5603 | } | |
98bfdba5 | 5604 | |
dee91e82 DE |
5605 | /* Load the partial DIEs for a secondary CU into memory. |
5606 | This is also used when rereading a primary CU with load_all_dies. */ | |
c5b7e1cb | 5607 | |
dee91e82 DE |
5608 | static void |
5609 | load_partial_comp_unit (struct dwarf2_per_cu_data *this_cu) | |
5610 | { | |
f4dc4d17 DE |
5611 | init_cutu_and_read_dies (this_cu, NULL, 1, 1, |
5612 | load_partial_comp_unit_reader, NULL); | |
ae038cb0 DJ |
5613 | } |
5614 | ||
ae038cb0 | 5615 | static void |
36586728 TT |
5616 | read_comp_units_from_section (struct objfile *objfile, |
5617 | struct dwarf2_section_info *section, | |
5618 | unsigned int is_dwz, | |
5619 | int *n_allocated, | |
5620 | int *n_comp_units, | |
5621 | struct dwarf2_per_cu_data ***all_comp_units) | |
ae038cb0 | 5622 | { |
be391dca | 5623 | gdb_byte *info_ptr; |
36586728 | 5624 | bfd *abfd = section->asection->owner; |
be391dca | 5625 | |
36586728 | 5626 | dwarf2_read_section (objfile, section); |
ae038cb0 | 5627 | |
36586728 | 5628 | info_ptr = section->buffer; |
6e70227d | 5629 | |
36586728 | 5630 | while (info_ptr < section->buffer + section->size) |
ae038cb0 | 5631 | { |
c764a876 | 5632 | unsigned int length, initial_length_size; |
ae038cb0 | 5633 | struct dwarf2_per_cu_data *this_cu; |
b64f50a1 | 5634 | sect_offset offset; |
ae038cb0 | 5635 | |
36586728 | 5636 | offset.sect_off = info_ptr - section->buffer; |
ae038cb0 DJ |
5637 | |
5638 | /* Read just enough information to find out where the next | |
5639 | compilation unit is. */ | |
36586728 | 5640 | length = read_initial_length (abfd, info_ptr, &initial_length_size); |
ae038cb0 DJ |
5641 | |
5642 | /* Save the compilation unit for later lookup. */ | |
5643 | this_cu = obstack_alloc (&objfile->objfile_obstack, | |
5644 | sizeof (struct dwarf2_per_cu_data)); | |
5645 | memset (this_cu, 0, sizeof (*this_cu)); | |
5646 | this_cu->offset = offset; | |
c764a876 | 5647 | this_cu->length = length + initial_length_size; |
36586728 | 5648 | this_cu->is_dwz = is_dwz; |
9291a0cd | 5649 | this_cu->objfile = objfile; |
8a0459fd | 5650 | this_cu->section = section; |
ae038cb0 | 5651 | |
36586728 | 5652 | if (*n_comp_units == *n_allocated) |
ae038cb0 | 5653 | { |
36586728 TT |
5654 | *n_allocated *= 2; |
5655 | *all_comp_units = xrealloc (*all_comp_units, | |
5656 | *n_allocated | |
5657 | * sizeof (struct dwarf2_per_cu_data *)); | |
ae038cb0 | 5658 | } |
36586728 TT |
5659 | (*all_comp_units)[*n_comp_units] = this_cu; |
5660 | ++*n_comp_units; | |
ae038cb0 DJ |
5661 | |
5662 | info_ptr = info_ptr + this_cu->length; | |
5663 | } | |
36586728 TT |
5664 | } |
5665 | ||
5666 | /* Create a list of all compilation units in OBJFILE. | |
5667 | This is only done for -readnow and building partial symtabs. */ | |
5668 | ||
5669 | static void | |
5670 | create_all_comp_units (struct objfile *objfile) | |
5671 | { | |
5672 | int n_allocated; | |
5673 | int n_comp_units; | |
5674 | struct dwarf2_per_cu_data **all_comp_units; | |
5675 | ||
5676 | n_comp_units = 0; | |
5677 | n_allocated = 10; | |
5678 | all_comp_units = xmalloc (n_allocated | |
5679 | * sizeof (struct dwarf2_per_cu_data *)); | |
5680 | ||
5681 | read_comp_units_from_section (objfile, &dwarf2_per_objfile->info, 0, | |
5682 | &n_allocated, &n_comp_units, &all_comp_units); | |
5683 | ||
5684 | if (bfd_get_section_by_name (objfile->obfd, ".gnu_debugaltlink") != NULL) | |
5685 | { | |
5686 | struct dwz_file *dwz = dwarf2_get_dwz_file (); | |
5687 | ||
5688 | read_comp_units_from_section (objfile, &dwz->info, 1, | |
5689 | &n_allocated, &n_comp_units, | |
5690 | &all_comp_units); | |
5691 | } | |
ae038cb0 DJ |
5692 | |
5693 | dwarf2_per_objfile->all_comp_units | |
5694 | = obstack_alloc (&objfile->objfile_obstack, | |
5695 | n_comp_units * sizeof (struct dwarf2_per_cu_data *)); | |
5696 | memcpy (dwarf2_per_objfile->all_comp_units, all_comp_units, | |
5697 | n_comp_units * sizeof (struct dwarf2_per_cu_data *)); | |
5698 | xfree (all_comp_units); | |
5699 | dwarf2_per_objfile->n_comp_units = n_comp_units; | |
c906108c SS |
5700 | } |
5701 | ||
5734ee8b DJ |
5702 | /* Process all loaded DIEs for compilation unit CU, starting at |
5703 | FIRST_DIE. The caller should pass NEED_PC == 1 if the compilation | |
5704 | unit DIE did not have PC info (DW_AT_low_pc and DW_AT_high_pc, or | |
5705 | DW_AT_ranges). If NEED_PC is set, then this function will set | |
5706 | *LOWPC and *HIGHPC to the lowest and highest PC values found in CU | |
5707 | and record the covered ranges in the addrmap. */ | |
c906108c | 5708 | |
72bf9492 DJ |
5709 | static void |
5710 | scan_partial_symbols (struct partial_die_info *first_die, CORE_ADDR *lowpc, | |
5734ee8b | 5711 | CORE_ADDR *highpc, int need_pc, struct dwarf2_cu *cu) |
c906108c | 5712 | { |
72bf9492 | 5713 | struct partial_die_info *pdi; |
c906108c | 5714 | |
91c24f0a DC |
5715 | /* Now, march along the PDI's, descending into ones which have |
5716 | interesting children but skipping the children of the other ones, | |
5717 | until we reach the end of the compilation unit. */ | |
c906108c | 5718 | |
72bf9492 | 5719 | pdi = first_die; |
91c24f0a | 5720 | |
72bf9492 DJ |
5721 | while (pdi != NULL) |
5722 | { | |
5723 | fixup_partial_die (pdi, cu); | |
c906108c | 5724 | |
f55ee35c | 5725 | /* Anonymous namespaces or modules have no name but have interesting |
91c24f0a DC |
5726 | children, so we need to look at them. Ditto for anonymous |
5727 | enums. */ | |
933c6fe4 | 5728 | |
72bf9492 | 5729 | if (pdi->name != NULL || pdi->tag == DW_TAG_namespace |
95554aad TT |
5730 | || pdi->tag == DW_TAG_module || pdi->tag == DW_TAG_enumeration_type |
5731 | || pdi->tag == DW_TAG_imported_unit) | |
c906108c | 5732 | { |
72bf9492 | 5733 | switch (pdi->tag) |
c906108c SS |
5734 | { |
5735 | case DW_TAG_subprogram: | |
5734ee8b | 5736 | add_partial_subprogram (pdi, lowpc, highpc, need_pc, cu); |
c906108c | 5737 | break; |
72929c62 | 5738 | case DW_TAG_constant: |
c906108c SS |
5739 | case DW_TAG_variable: |
5740 | case DW_TAG_typedef: | |
91c24f0a | 5741 | case DW_TAG_union_type: |
72bf9492 | 5742 | if (!pdi->is_declaration) |
63d06c5c | 5743 | { |
72bf9492 | 5744 | add_partial_symbol (pdi, cu); |
63d06c5c DC |
5745 | } |
5746 | break; | |
c906108c | 5747 | case DW_TAG_class_type: |
680b30c7 | 5748 | case DW_TAG_interface_type: |
c906108c | 5749 | case DW_TAG_structure_type: |
72bf9492 | 5750 | if (!pdi->is_declaration) |
c906108c | 5751 | { |
72bf9492 | 5752 | add_partial_symbol (pdi, cu); |
c906108c SS |
5753 | } |
5754 | break; | |
91c24f0a | 5755 | case DW_TAG_enumeration_type: |
72bf9492 DJ |
5756 | if (!pdi->is_declaration) |
5757 | add_partial_enumeration (pdi, cu); | |
c906108c SS |
5758 | break; |
5759 | case DW_TAG_base_type: | |
a02abb62 | 5760 | case DW_TAG_subrange_type: |
c906108c | 5761 | /* File scope base type definitions are added to the partial |
c5aa993b | 5762 | symbol table. */ |
72bf9492 | 5763 | add_partial_symbol (pdi, cu); |
c906108c | 5764 | break; |
d9fa45fe | 5765 | case DW_TAG_namespace: |
5734ee8b | 5766 | add_partial_namespace (pdi, lowpc, highpc, need_pc, cu); |
91c24f0a | 5767 | break; |
5d7cb8df JK |
5768 | case DW_TAG_module: |
5769 | add_partial_module (pdi, lowpc, highpc, need_pc, cu); | |
5770 | break; | |
95554aad TT |
5771 | case DW_TAG_imported_unit: |
5772 | { | |
5773 | struct dwarf2_per_cu_data *per_cu; | |
5774 | ||
f4dc4d17 DE |
5775 | /* For now we don't handle imported units in type units. */ |
5776 | if (cu->per_cu->is_debug_types) | |
5777 | { | |
5778 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
5779 | " supported in type units [in module %s]"), | |
5780 | cu->objfile->name); | |
5781 | } | |
5782 | ||
95554aad | 5783 | per_cu = dwarf2_find_containing_comp_unit (pdi->d.offset, |
36586728 | 5784 | pdi->is_dwz, |
95554aad TT |
5785 | cu->objfile); |
5786 | ||
5787 | /* Go read the partial unit, if needed. */ | |
5788 | if (per_cu->v.psymtab == NULL) | |
5789 | process_psymtab_comp_unit (per_cu, 1); | |
5790 | ||
f4dc4d17 | 5791 | VEC_safe_push (dwarf2_per_cu_ptr, |
796a7ff8 | 5792 | cu->per_cu->imported_symtabs, per_cu); |
95554aad TT |
5793 | } |
5794 | break; | |
c906108c SS |
5795 | default: |
5796 | break; | |
5797 | } | |
5798 | } | |
5799 | ||
72bf9492 DJ |
5800 | /* If the die has a sibling, skip to the sibling. */ |
5801 | ||
5802 | pdi = pdi->die_sibling; | |
5803 | } | |
5804 | } | |
5805 | ||
5806 | /* Functions used to compute the fully scoped name of a partial DIE. | |
91c24f0a | 5807 | |
72bf9492 | 5808 | Normally, this is simple. For C++, the parent DIE's fully scoped |
987504bb JJ |
5809 | name is concatenated with "::" and the partial DIE's name. For |
5810 | Java, the same thing occurs except that "." is used instead of "::". | |
72bf9492 DJ |
5811 | Enumerators are an exception; they use the scope of their parent |
5812 | enumeration type, i.e. the name of the enumeration type is not | |
5813 | prepended to the enumerator. | |
91c24f0a | 5814 | |
72bf9492 DJ |
5815 | There are two complexities. One is DW_AT_specification; in this |
5816 | case "parent" means the parent of the target of the specification, | |
5817 | instead of the direct parent of the DIE. The other is compilers | |
5818 | which do not emit DW_TAG_namespace; in this case we try to guess | |
5819 | the fully qualified name of structure types from their members' | |
5820 | linkage names. This must be done using the DIE's children rather | |
5821 | than the children of any DW_AT_specification target. We only need | |
5822 | to do this for structures at the top level, i.e. if the target of | |
5823 | any DW_AT_specification (if any; otherwise the DIE itself) does not | |
5824 | have a parent. */ | |
5825 | ||
5826 | /* Compute the scope prefix associated with PDI's parent, in | |
5827 | compilation unit CU. The result will be allocated on CU's | |
5828 | comp_unit_obstack, or a copy of the already allocated PDI->NAME | |
5829 | field. NULL is returned if no prefix is necessary. */ | |
15d034d0 | 5830 | static const char * |
72bf9492 DJ |
5831 | partial_die_parent_scope (struct partial_die_info *pdi, |
5832 | struct dwarf2_cu *cu) | |
5833 | { | |
15d034d0 | 5834 | const char *grandparent_scope; |
72bf9492 | 5835 | struct partial_die_info *parent, *real_pdi; |
91c24f0a | 5836 | |
72bf9492 DJ |
5837 | /* We need to look at our parent DIE; if we have a DW_AT_specification, |
5838 | then this means the parent of the specification DIE. */ | |
5839 | ||
5840 | real_pdi = pdi; | |
72bf9492 | 5841 | while (real_pdi->has_specification) |
36586728 TT |
5842 | real_pdi = find_partial_die (real_pdi->spec_offset, |
5843 | real_pdi->spec_is_dwz, cu); | |
72bf9492 DJ |
5844 | |
5845 | parent = real_pdi->die_parent; | |
5846 | if (parent == NULL) | |
5847 | return NULL; | |
5848 | ||
5849 | if (parent->scope_set) | |
5850 | return parent->scope; | |
5851 | ||
5852 | fixup_partial_die (parent, cu); | |
5853 | ||
10b3939b | 5854 | grandparent_scope = partial_die_parent_scope (parent, cu); |
72bf9492 | 5855 | |
acebe513 UW |
5856 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
5857 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
5858 | Work around this problem here. */ | |
5859 | if (cu->language == language_cplus | |
6e70227d | 5860 | && parent->tag == DW_TAG_namespace |
acebe513 UW |
5861 | && strcmp (parent->name, "::") == 0 |
5862 | && grandparent_scope == NULL) | |
5863 | { | |
5864 | parent->scope = NULL; | |
5865 | parent->scope_set = 1; | |
5866 | return NULL; | |
5867 | } | |
5868 | ||
9c6c53f7 SA |
5869 | if (pdi->tag == DW_TAG_enumerator) |
5870 | /* Enumerators should not get the name of the enumeration as a prefix. */ | |
5871 | parent->scope = grandparent_scope; | |
5872 | else if (parent->tag == DW_TAG_namespace | |
f55ee35c | 5873 | || parent->tag == DW_TAG_module |
72bf9492 DJ |
5874 | || parent->tag == DW_TAG_structure_type |
5875 | || parent->tag == DW_TAG_class_type | |
680b30c7 | 5876 | || parent->tag == DW_TAG_interface_type |
ceeb3d5a TT |
5877 | || parent->tag == DW_TAG_union_type |
5878 | || parent->tag == DW_TAG_enumeration_type) | |
72bf9492 DJ |
5879 | { |
5880 | if (grandparent_scope == NULL) | |
5881 | parent->scope = parent->name; | |
5882 | else | |
3e43a32a MS |
5883 | parent->scope = typename_concat (&cu->comp_unit_obstack, |
5884 | grandparent_scope, | |
f55ee35c | 5885 | parent->name, 0, cu); |
72bf9492 | 5886 | } |
72bf9492 DJ |
5887 | else |
5888 | { | |
5889 | /* FIXME drow/2004-04-01: What should we be doing with | |
5890 | function-local names? For partial symbols, we should probably be | |
5891 | ignoring them. */ | |
5892 | complaint (&symfile_complaints, | |
e2e0b3e5 | 5893 | _("unhandled containing DIE tag %d for DIE at %d"), |
b64f50a1 | 5894 | parent->tag, pdi->offset.sect_off); |
72bf9492 | 5895 | parent->scope = grandparent_scope; |
c906108c SS |
5896 | } |
5897 | ||
72bf9492 DJ |
5898 | parent->scope_set = 1; |
5899 | return parent->scope; | |
5900 | } | |
5901 | ||
5902 | /* Return the fully scoped name associated with PDI, from compilation unit | |
5903 | CU. The result will be allocated with malloc. */ | |
4568ecf9 | 5904 | |
72bf9492 DJ |
5905 | static char * |
5906 | partial_die_full_name (struct partial_die_info *pdi, | |
5907 | struct dwarf2_cu *cu) | |
5908 | { | |
15d034d0 | 5909 | const char *parent_scope; |
72bf9492 | 5910 | |
98bfdba5 PA |
5911 | /* If this is a template instantiation, we can not work out the |
5912 | template arguments from partial DIEs. So, unfortunately, we have | |
5913 | to go through the full DIEs. At least any work we do building | |
5914 | types here will be reused if full symbols are loaded later. */ | |
5915 | if (pdi->has_template_arguments) | |
5916 | { | |
5917 | fixup_partial_die (pdi, cu); | |
5918 | ||
5919 | if (pdi->name != NULL && strchr (pdi->name, '<') == NULL) | |
5920 | { | |
5921 | struct die_info *die; | |
5922 | struct attribute attr; | |
5923 | struct dwarf2_cu *ref_cu = cu; | |
5924 | ||
b64f50a1 | 5925 | /* DW_FORM_ref_addr is using section offset. */ |
98bfdba5 PA |
5926 | attr.name = 0; |
5927 | attr.form = DW_FORM_ref_addr; | |
4568ecf9 | 5928 | attr.u.unsnd = pdi->offset.sect_off; |
98bfdba5 PA |
5929 | die = follow_die_ref (NULL, &attr, &ref_cu); |
5930 | ||
5931 | return xstrdup (dwarf2_full_name (NULL, die, ref_cu)); | |
5932 | } | |
5933 | } | |
5934 | ||
72bf9492 DJ |
5935 | parent_scope = partial_die_parent_scope (pdi, cu); |
5936 | if (parent_scope == NULL) | |
5937 | return NULL; | |
5938 | else | |
f55ee35c | 5939 | return typename_concat (NULL, parent_scope, pdi->name, 0, cu); |
c906108c SS |
5940 | } |
5941 | ||
5942 | static void | |
72bf9492 | 5943 | add_partial_symbol (struct partial_die_info *pdi, struct dwarf2_cu *cu) |
c906108c | 5944 | { |
e7c27a73 | 5945 | struct objfile *objfile = cu->objfile; |
c906108c | 5946 | CORE_ADDR addr = 0; |
15d034d0 | 5947 | const char *actual_name = NULL; |
e142c38c | 5948 | CORE_ADDR baseaddr; |
15d034d0 | 5949 | char *built_actual_name; |
e142c38c DJ |
5950 | |
5951 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 5952 | |
15d034d0 TT |
5953 | built_actual_name = partial_die_full_name (pdi, cu); |
5954 | if (built_actual_name != NULL) | |
5955 | actual_name = built_actual_name; | |
63d06c5c | 5956 | |
72bf9492 DJ |
5957 | if (actual_name == NULL) |
5958 | actual_name = pdi->name; | |
5959 | ||
c906108c SS |
5960 | switch (pdi->tag) |
5961 | { | |
5962 | case DW_TAG_subprogram: | |
2cfa0c8d | 5963 | if (pdi->is_external || cu->language == language_ada) |
c906108c | 5964 | { |
2cfa0c8d JB |
5965 | /* brobecker/2007-12-26: Normally, only "external" DIEs are part |
5966 | of the global scope. But in Ada, we want to be able to access | |
5967 | nested procedures globally. So all Ada subprograms are stored | |
5968 | in the global scope. */ | |
f47fb265 | 5969 | /* prim_record_minimal_symbol (actual_name, pdi->lowpc + baseaddr, |
c5aa993b | 5970 | mst_text, objfile); */ |
f47fb265 | 5971 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 5972 | built_actual_name != NULL, |
f47fb265 MS |
5973 | VAR_DOMAIN, LOC_BLOCK, |
5974 | &objfile->global_psymbols, | |
5975 | 0, pdi->lowpc + baseaddr, | |
5976 | cu->language, objfile); | |
c906108c SS |
5977 | } |
5978 | else | |
5979 | { | |
f47fb265 | 5980 | /* prim_record_minimal_symbol (actual_name, pdi->lowpc + baseaddr, |
c5aa993b | 5981 | mst_file_text, objfile); */ |
f47fb265 | 5982 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 5983 | built_actual_name != NULL, |
f47fb265 MS |
5984 | VAR_DOMAIN, LOC_BLOCK, |
5985 | &objfile->static_psymbols, | |
5986 | 0, pdi->lowpc + baseaddr, | |
5987 | cu->language, objfile); | |
c906108c SS |
5988 | } |
5989 | break; | |
72929c62 JB |
5990 | case DW_TAG_constant: |
5991 | { | |
5992 | struct psymbol_allocation_list *list; | |
5993 | ||
5994 | if (pdi->is_external) | |
5995 | list = &objfile->global_psymbols; | |
5996 | else | |
5997 | list = &objfile->static_psymbols; | |
f47fb265 | 5998 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 5999 | built_actual_name != NULL, VAR_DOMAIN, LOC_STATIC, |
f47fb265 | 6000 | list, 0, 0, cu->language, objfile); |
72929c62 JB |
6001 | } |
6002 | break; | |
c906108c | 6003 | case DW_TAG_variable: |
95554aad TT |
6004 | if (pdi->d.locdesc) |
6005 | addr = decode_locdesc (pdi->d.locdesc, cu); | |
caac4577 | 6006 | |
95554aad | 6007 | if (pdi->d.locdesc |
caac4577 JG |
6008 | && addr == 0 |
6009 | && !dwarf2_per_objfile->has_section_at_zero) | |
6010 | { | |
6011 | /* A global or static variable may also have been stripped | |
6012 | out by the linker if unused, in which case its address | |
6013 | will be nullified; do not add such variables into partial | |
6014 | symbol table then. */ | |
6015 | } | |
6016 | else if (pdi->is_external) | |
c906108c SS |
6017 | { |
6018 | /* Global Variable. | |
6019 | Don't enter into the minimal symbol tables as there is | |
6020 | a minimal symbol table entry from the ELF symbols already. | |
6021 | Enter into partial symbol table if it has a location | |
6022 | descriptor or a type. | |
6023 | If the location descriptor is missing, new_symbol will create | |
6024 | a LOC_UNRESOLVED symbol, the address of the variable will then | |
6025 | be determined from the minimal symbol table whenever the variable | |
6026 | is referenced. | |
6027 | The address for the partial symbol table entry is not | |
6028 | used by GDB, but it comes in handy for debugging partial symbol | |
6029 | table building. */ | |
6030 | ||
95554aad | 6031 | if (pdi->d.locdesc || pdi->has_type) |
f47fb265 | 6032 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 6033 | built_actual_name != NULL, |
f47fb265 MS |
6034 | VAR_DOMAIN, LOC_STATIC, |
6035 | &objfile->global_psymbols, | |
6036 | 0, addr + baseaddr, | |
6037 | cu->language, objfile); | |
c906108c SS |
6038 | } |
6039 | else | |
6040 | { | |
0963b4bd | 6041 | /* Static Variable. Skip symbols without location descriptors. */ |
95554aad | 6042 | if (pdi->d.locdesc == NULL) |
decbce07 | 6043 | { |
15d034d0 | 6044 | xfree (built_actual_name); |
decbce07 MS |
6045 | return; |
6046 | } | |
f47fb265 | 6047 | /* prim_record_minimal_symbol (actual_name, addr + baseaddr, |
c5aa993b | 6048 | mst_file_data, objfile); */ |
f47fb265 | 6049 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 6050 | built_actual_name != NULL, |
f47fb265 MS |
6051 | VAR_DOMAIN, LOC_STATIC, |
6052 | &objfile->static_psymbols, | |
6053 | 0, addr + baseaddr, | |
6054 | cu->language, objfile); | |
c906108c SS |
6055 | } |
6056 | break; | |
6057 | case DW_TAG_typedef: | |
6058 | case DW_TAG_base_type: | |
a02abb62 | 6059 | case DW_TAG_subrange_type: |
38d518c9 | 6060 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 6061 | built_actual_name != NULL, |
176620f1 | 6062 | VAR_DOMAIN, LOC_TYPEDEF, |
c906108c | 6063 | &objfile->static_psymbols, |
e142c38c | 6064 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c | 6065 | break; |
72bf9492 DJ |
6066 | case DW_TAG_namespace: |
6067 | add_psymbol_to_list (actual_name, strlen (actual_name), | |
15d034d0 | 6068 | built_actual_name != NULL, |
72bf9492 DJ |
6069 | VAR_DOMAIN, LOC_TYPEDEF, |
6070 | &objfile->global_psymbols, | |
6071 | 0, (CORE_ADDR) 0, cu->language, objfile); | |
6072 | break; | |
c906108c | 6073 | case DW_TAG_class_type: |
680b30c7 | 6074 | case DW_TAG_interface_type: |
c906108c SS |
6075 | case DW_TAG_structure_type: |
6076 | case DW_TAG_union_type: | |
6077 | case DW_TAG_enumeration_type: | |
fa4028e9 JB |
6078 | /* Skip external references. The DWARF standard says in the section |
6079 | about "Structure, Union, and Class Type Entries": "An incomplete | |
6080 | structure, union or class type is represented by a structure, | |
6081 | union or class entry that does not have a byte size attribute | |
6082 | and that has a DW_AT_declaration attribute." */ | |
6083 | if (!pdi->has_byte_size && pdi->is_declaration) | |
decbce07 | 6084 | { |
15d034d0 | 6085 | xfree (built_actual_name); |
decbce07 MS |
6086 | return; |
6087 | } | |
fa4028e9 | 6088 | |
63d06c5c DC |
6089 | /* NOTE: carlton/2003-10-07: See comment in new_symbol about |
6090 | static vs. global. */ | |
38d518c9 | 6091 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 6092 | built_actual_name != NULL, |
176620f1 | 6093 | STRUCT_DOMAIN, LOC_TYPEDEF, |
987504bb JJ |
6094 | (cu->language == language_cplus |
6095 | || cu->language == language_java) | |
63d06c5c DC |
6096 | ? &objfile->global_psymbols |
6097 | : &objfile->static_psymbols, | |
e142c38c | 6098 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c | 6099 | |
c906108c SS |
6100 | break; |
6101 | case DW_TAG_enumerator: | |
38d518c9 | 6102 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 6103 | built_actual_name != NULL, |
176620f1 | 6104 | VAR_DOMAIN, LOC_CONST, |
987504bb JJ |
6105 | (cu->language == language_cplus |
6106 | || cu->language == language_java) | |
f6fe98ef DJ |
6107 | ? &objfile->global_psymbols |
6108 | : &objfile->static_psymbols, | |
e142c38c | 6109 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c SS |
6110 | break; |
6111 | default: | |
6112 | break; | |
6113 | } | |
5c4e30ca | 6114 | |
15d034d0 | 6115 | xfree (built_actual_name); |
c906108c SS |
6116 | } |
6117 | ||
5c4e30ca DC |
6118 | /* Read a partial die corresponding to a namespace; also, add a symbol |
6119 | corresponding to that namespace to the symbol table. NAMESPACE is | |
6120 | the name of the enclosing namespace. */ | |
91c24f0a | 6121 | |
72bf9492 DJ |
6122 | static void |
6123 | add_partial_namespace (struct partial_die_info *pdi, | |
91c24f0a | 6124 | CORE_ADDR *lowpc, CORE_ADDR *highpc, |
5734ee8b | 6125 | int need_pc, struct dwarf2_cu *cu) |
91c24f0a | 6126 | { |
72bf9492 | 6127 | /* Add a symbol for the namespace. */ |
e7c27a73 | 6128 | |
72bf9492 | 6129 | add_partial_symbol (pdi, cu); |
5c4e30ca DC |
6130 | |
6131 | /* Now scan partial symbols in that namespace. */ | |
6132 | ||
91c24f0a | 6133 | if (pdi->has_children) |
5734ee8b | 6134 | scan_partial_symbols (pdi->die_child, lowpc, highpc, need_pc, cu); |
91c24f0a DC |
6135 | } |
6136 | ||
5d7cb8df JK |
6137 | /* Read a partial die corresponding to a Fortran module. */ |
6138 | ||
6139 | static void | |
6140 | add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, | |
6141 | CORE_ADDR *highpc, int need_pc, struct dwarf2_cu *cu) | |
6142 | { | |
f55ee35c | 6143 | /* Now scan partial symbols in that module. */ |
5d7cb8df JK |
6144 | |
6145 | if (pdi->has_children) | |
6146 | scan_partial_symbols (pdi->die_child, lowpc, highpc, need_pc, cu); | |
6147 | } | |
6148 | ||
bc30ff58 JB |
6149 | /* Read a partial die corresponding to a subprogram and create a partial |
6150 | symbol for that subprogram. When the CU language allows it, this | |
6151 | routine also defines a partial symbol for each nested subprogram | |
6152 | that this subprogram contains. | |
6e70227d | 6153 | |
bc30ff58 JB |
6154 | DIE my also be a lexical block, in which case we simply search |
6155 | recursively for suprograms defined inside that lexical block. | |
6156 | Again, this is only performed when the CU language allows this | |
6157 | type of definitions. */ | |
6158 | ||
6159 | static void | |
6160 | add_partial_subprogram (struct partial_die_info *pdi, | |
6161 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 6162 | int need_pc, struct dwarf2_cu *cu) |
bc30ff58 JB |
6163 | { |
6164 | if (pdi->tag == DW_TAG_subprogram) | |
6165 | { | |
6166 | if (pdi->has_pc_info) | |
6167 | { | |
6168 | if (pdi->lowpc < *lowpc) | |
6169 | *lowpc = pdi->lowpc; | |
6170 | if (pdi->highpc > *highpc) | |
6171 | *highpc = pdi->highpc; | |
5734ee8b DJ |
6172 | if (need_pc) |
6173 | { | |
6174 | CORE_ADDR baseaddr; | |
6175 | struct objfile *objfile = cu->objfile; | |
6176 | ||
6177 | baseaddr = ANOFFSET (objfile->section_offsets, | |
6178 | SECT_OFF_TEXT (objfile)); | |
6179 | addrmap_set_empty (objfile->psymtabs_addrmap, | |
01637564 DE |
6180 | pdi->lowpc + baseaddr, |
6181 | pdi->highpc - 1 + baseaddr, | |
9291a0cd | 6182 | cu->per_cu->v.psymtab); |
5734ee8b | 6183 | } |
481860b3 GB |
6184 | } |
6185 | ||
6186 | if (pdi->has_pc_info || (!pdi->is_external && pdi->may_be_inlined)) | |
6187 | { | |
bc30ff58 | 6188 | if (!pdi->is_declaration) |
e8d05480 JB |
6189 | /* Ignore subprogram DIEs that do not have a name, they are |
6190 | illegal. Do not emit a complaint at this point, we will | |
6191 | do so when we convert this psymtab into a symtab. */ | |
6192 | if (pdi->name) | |
6193 | add_partial_symbol (pdi, cu); | |
bc30ff58 JB |
6194 | } |
6195 | } | |
6e70227d | 6196 | |
bc30ff58 JB |
6197 | if (! pdi->has_children) |
6198 | return; | |
6199 | ||
6200 | if (cu->language == language_ada) | |
6201 | { | |
6202 | pdi = pdi->die_child; | |
6203 | while (pdi != NULL) | |
6204 | { | |
6205 | fixup_partial_die (pdi, cu); | |
6206 | if (pdi->tag == DW_TAG_subprogram | |
6207 | || pdi->tag == DW_TAG_lexical_block) | |
5734ee8b | 6208 | add_partial_subprogram (pdi, lowpc, highpc, need_pc, cu); |
bc30ff58 JB |
6209 | pdi = pdi->die_sibling; |
6210 | } | |
6211 | } | |
6212 | } | |
6213 | ||
91c24f0a DC |
6214 | /* Read a partial die corresponding to an enumeration type. */ |
6215 | ||
72bf9492 DJ |
6216 | static void |
6217 | add_partial_enumeration (struct partial_die_info *enum_pdi, | |
6218 | struct dwarf2_cu *cu) | |
91c24f0a | 6219 | { |
72bf9492 | 6220 | struct partial_die_info *pdi; |
91c24f0a DC |
6221 | |
6222 | if (enum_pdi->name != NULL) | |
72bf9492 DJ |
6223 | add_partial_symbol (enum_pdi, cu); |
6224 | ||
6225 | pdi = enum_pdi->die_child; | |
6226 | while (pdi) | |
91c24f0a | 6227 | { |
72bf9492 | 6228 | if (pdi->tag != DW_TAG_enumerator || pdi->name == NULL) |
e2e0b3e5 | 6229 | complaint (&symfile_complaints, _("malformed enumerator DIE ignored")); |
91c24f0a | 6230 | else |
72bf9492 DJ |
6231 | add_partial_symbol (pdi, cu); |
6232 | pdi = pdi->die_sibling; | |
91c24f0a | 6233 | } |
91c24f0a DC |
6234 | } |
6235 | ||
6caca83c CC |
6236 | /* Return the initial uleb128 in the die at INFO_PTR. */ |
6237 | ||
6238 | static unsigned int | |
6239 | peek_abbrev_code (bfd *abfd, gdb_byte *info_ptr) | |
6240 | { | |
6241 | unsigned int bytes_read; | |
6242 | ||
6243 | return read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
6244 | } | |
6245 | ||
4bb7a0a7 DJ |
6246 | /* Read the initial uleb128 in the die at INFO_PTR in compilation unit CU. |
6247 | Return the corresponding abbrev, or NULL if the number is zero (indicating | |
6248 | an empty DIE). In either case *BYTES_READ will be set to the length of | |
6249 | the initial number. */ | |
6250 | ||
6251 | static struct abbrev_info * | |
fe1b8b76 | 6252 | peek_die_abbrev (gdb_byte *info_ptr, unsigned int *bytes_read, |
891d2f0b | 6253 | struct dwarf2_cu *cu) |
4bb7a0a7 DJ |
6254 | { |
6255 | bfd *abfd = cu->objfile->obfd; | |
6256 | unsigned int abbrev_number; | |
6257 | struct abbrev_info *abbrev; | |
6258 | ||
6259 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
6260 | ||
6261 | if (abbrev_number == 0) | |
6262 | return NULL; | |
6263 | ||
433df2d4 | 6264 | abbrev = abbrev_table_lookup_abbrev (cu->abbrev_table, abbrev_number); |
4bb7a0a7 DJ |
6265 | if (!abbrev) |
6266 | { | |
3e43a32a MS |
6267 | error (_("Dwarf Error: Could not find abbrev number %d [in module %s]"), |
6268 | abbrev_number, bfd_get_filename (abfd)); | |
4bb7a0a7 DJ |
6269 | } |
6270 | ||
6271 | return abbrev; | |
6272 | } | |
6273 | ||
93311388 DE |
6274 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
6275 | Returns a pointer to the end of a series of DIEs, terminated by an empty | |
4bb7a0a7 DJ |
6276 | DIE. Any children of the skipped DIEs will also be skipped. */ |
6277 | ||
fe1b8b76 | 6278 | static gdb_byte * |
dee91e82 | 6279 | skip_children (const struct die_reader_specs *reader, gdb_byte *info_ptr) |
4bb7a0a7 | 6280 | { |
dee91e82 | 6281 | struct dwarf2_cu *cu = reader->cu; |
4bb7a0a7 DJ |
6282 | struct abbrev_info *abbrev; |
6283 | unsigned int bytes_read; | |
6284 | ||
6285 | while (1) | |
6286 | { | |
6287 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, cu); | |
6288 | if (abbrev == NULL) | |
6289 | return info_ptr + bytes_read; | |
6290 | else | |
dee91e82 | 6291 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
4bb7a0a7 DJ |
6292 | } |
6293 | } | |
6294 | ||
93311388 DE |
6295 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
6296 | INFO_PTR should point just after the initial uleb128 of a DIE, and the | |
4bb7a0a7 DJ |
6297 | abbrev corresponding to that skipped uleb128 should be passed in |
6298 | ABBREV. Returns a pointer to this DIE's sibling, skipping any | |
6299 | children. */ | |
6300 | ||
fe1b8b76 | 6301 | static gdb_byte * |
dee91e82 DE |
6302 | skip_one_die (const struct die_reader_specs *reader, gdb_byte *info_ptr, |
6303 | struct abbrev_info *abbrev) | |
4bb7a0a7 DJ |
6304 | { |
6305 | unsigned int bytes_read; | |
6306 | struct attribute attr; | |
dee91e82 DE |
6307 | bfd *abfd = reader->abfd; |
6308 | struct dwarf2_cu *cu = reader->cu; | |
6309 | gdb_byte *buffer = reader->buffer; | |
f664829e DE |
6310 | const gdb_byte *buffer_end = reader->buffer_end; |
6311 | gdb_byte *start_info_ptr = info_ptr; | |
4bb7a0a7 DJ |
6312 | unsigned int form, i; |
6313 | ||
6314 | for (i = 0; i < abbrev->num_attrs; i++) | |
6315 | { | |
6316 | /* The only abbrev we care about is DW_AT_sibling. */ | |
6317 | if (abbrev->attrs[i].name == DW_AT_sibling) | |
6318 | { | |
dee91e82 | 6319 | read_attribute (reader, &attr, &abbrev->attrs[i], info_ptr); |
4bb7a0a7 | 6320 | if (attr.form == DW_FORM_ref_addr) |
3e43a32a MS |
6321 | complaint (&symfile_complaints, |
6322 | _("ignoring absolute DW_AT_sibling")); | |
4bb7a0a7 | 6323 | else |
b64f50a1 | 6324 | return buffer + dwarf2_get_ref_die_offset (&attr).sect_off; |
4bb7a0a7 DJ |
6325 | } |
6326 | ||
6327 | /* If it isn't DW_AT_sibling, skip this attribute. */ | |
6328 | form = abbrev->attrs[i].form; | |
6329 | skip_attribute: | |
6330 | switch (form) | |
6331 | { | |
4bb7a0a7 | 6332 | case DW_FORM_ref_addr: |
ae411497 TT |
6333 | /* In DWARF 2, DW_FORM_ref_addr is address sized; in DWARF 3 |
6334 | and later it is offset sized. */ | |
6335 | if (cu->header.version == 2) | |
6336 | info_ptr += cu->header.addr_size; | |
6337 | else | |
6338 | info_ptr += cu->header.offset_size; | |
6339 | break; | |
36586728 TT |
6340 | case DW_FORM_GNU_ref_alt: |
6341 | info_ptr += cu->header.offset_size; | |
6342 | break; | |
ae411497 | 6343 | case DW_FORM_addr: |
4bb7a0a7 DJ |
6344 | info_ptr += cu->header.addr_size; |
6345 | break; | |
6346 | case DW_FORM_data1: | |
6347 | case DW_FORM_ref1: | |
6348 | case DW_FORM_flag: | |
6349 | info_ptr += 1; | |
6350 | break; | |
2dc7f7b3 TT |
6351 | case DW_FORM_flag_present: |
6352 | break; | |
4bb7a0a7 DJ |
6353 | case DW_FORM_data2: |
6354 | case DW_FORM_ref2: | |
6355 | info_ptr += 2; | |
6356 | break; | |
6357 | case DW_FORM_data4: | |
6358 | case DW_FORM_ref4: | |
6359 | info_ptr += 4; | |
6360 | break; | |
6361 | case DW_FORM_data8: | |
6362 | case DW_FORM_ref8: | |
55f1336d | 6363 | case DW_FORM_ref_sig8: |
4bb7a0a7 DJ |
6364 | info_ptr += 8; |
6365 | break; | |
6366 | case DW_FORM_string: | |
9b1c24c8 | 6367 | read_direct_string (abfd, info_ptr, &bytes_read); |
4bb7a0a7 DJ |
6368 | info_ptr += bytes_read; |
6369 | break; | |
2dc7f7b3 | 6370 | case DW_FORM_sec_offset: |
4bb7a0a7 | 6371 | case DW_FORM_strp: |
36586728 | 6372 | case DW_FORM_GNU_strp_alt: |
4bb7a0a7 DJ |
6373 | info_ptr += cu->header.offset_size; |
6374 | break; | |
2dc7f7b3 | 6375 | case DW_FORM_exprloc: |
4bb7a0a7 DJ |
6376 | case DW_FORM_block: |
6377 | info_ptr += read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
6378 | info_ptr += bytes_read; | |
6379 | break; | |
6380 | case DW_FORM_block1: | |
6381 | info_ptr += 1 + read_1_byte (abfd, info_ptr); | |
6382 | break; | |
6383 | case DW_FORM_block2: | |
6384 | info_ptr += 2 + read_2_bytes (abfd, info_ptr); | |
6385 | break; | |
6386 | case DW_FORM_block4: | |
6387 | info_ptr += 4 + read_4_bytes (abfd, info_ptr); | |
6388 | break; | |
6389 | case DW_FORM_sdata: | |
6390 | case DW_FORM_udata: | |
6391 | case DW_FORM_ref_udata: | |
3019eac3 DE |
6392 | case DW_FORM_GNU_addr_index: |
6393 | case DW_FORM_GNU_str_index: | |
f664829e | 6394 | info_ptr = (gdb_byte *) safe_skip_leb128 (info_ptr, buffer_end); |
4bb7a0a7 DJ |
6395 | break; |
6396 | case DW_FORM_indirect: | |
6397 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
6398 | info_ptr += bytes_read; | |
6399 | /* We need to continue parsing from here, so just go back to | |
6400 | the top. */ | |
6401 | goto skip_attribute; | |
6402 | ||
6403 | default: | |
3e43a32a MS |
6404 | error (_("Dwarf Error: Cannot handle %s " |
6405 | "in DWARF reader [in module %s]"), | |
4bb7a0a7 DJ |
6406 | dwarf_form_name (form), |
6407 | bfd_get_filename (abfd)); | |
6408 | } | |
6409 | } | |
6410 | ||
6411 | if (abbrev->has_children) | |
dee91e82 | 6412 | return skip_children (reader, info_ptr); |
4bb7a0a7 DJ |
6413 | else |
6414 | return info_ptr; | |
6415 | } | |
6416 | ||
93311388 | 6417 | /* Locate ORIG_PDI's sibling. |
dee91e82 | 6418 | INFO_PTR should point to the start of the next DIE after ORIG_PDI. */ |
91c24f0a | 6419 | |
fe1b8b76 | 6420 | static gdb_byte * |
dee91e82 DE |
6421 | locate_pdi_sibling (const struct die_reader_specs *reader, |
6422 | struct partial_die_info *orig_pdi, | |
6423 | gdb_byte *info_ptr) | |
91c24f0a DC |
6424 | { |
6425 | /* Do we know the sibling already? */ | |
72bf9492 | 6426 | |
91c24f0a DC |
6427 | if (orig_pdi->sibling) |
6428 | return orig_pdi->sibling; | |
6429 | ||
6430 | /* Are there any children to deal with? */ | |
6431 | ||
6432 | if (!orig_pdi->has_children) | |
6433 | return info_ptr; | |
6434 | ||
4bb7a0a7 | 6435 | /* Skip the children the long way. */ |
91c24f0a | 6436 | |
dee91e82 | 6437 | return skip_children (reader, info_ptr); |
91c24f0a DC |
6438 | } |
6439 | ||
257e7a09 | 6440 | /* Expand this partial symbol table into a full symbol table. SELF is |
442e4d9c | 6441 | not NULL. */ |
c906108c SS |
6442 | |
6443 | static void | |
257e7a09 YQ |
6444 | dwarf2_read_symtab (struct partial_symtab *self, |
6445 | struct objfile *objfile) | |
c906108c | 6446 | { |
257e7a09 | 6447 | if (self->readin) |
c906108c | 6448 | { |
442e4d9c | 6449 | warning (_("bug: psymtab for %s is already read in."), |
257e7a09 | 6450 | self->filename); |
442e4d9c YQ |
6451 | } |
6452 | else | |
6453 | { | |
6454 | if (info_verbose) | |
c906108c | 6455 | { |
442e4d9c | 6456 | printf_filtered (_("Reading in symbols for %s..."), |
257e7a09 | 6457 | self->filename); |
442e4d9c | 6458 | gdb_flush (gdb_stdout); |
c906108c | 6459 | } |
c906108c | 6460 | |
442e4d9c YQ |
6461 | /* Restore our global data. */ |
6462 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); | |
10b3939b | 6463 | |
442e4d9c YQ |
6464 | /* If this psymtab is constructed from a debug-only objfile, the |
6465 | has_section_at_zero flag will not necessarily be correct. We | |
6466 | can get the correct value for this flag by looking at the data | |
6467 | associated with the (presumably stripped) associated objfile. */ | |
6468 | if (objfile->separate_debug_objfile_backlink) | |
6469 | { | |
6470 | struct dwarf2_per_objfile *dpo_backlink | |
6471 | = objfile_data (objfile->separate_debug_objfile_backlink, | |
6472 | dwarf2_objfile_data_key); | |
9a619af0 | 6473 | |
442e4d9c YQ |
6474 | dwarf2_per_objfile->has_section_at_zero |
6475 | = dpo_backlink->has_section_at_zero; | |
6476 | } | |
b2ab525c | 6477 | |
442e4d9c | 6478 | dwarf2_per_objfile->reading_partial_symbols = 0; |
98bfdba5 | 6479 | |
257e7a09 | 6480 | psymtab_to_symtab_1 (self); |
c906108c | 6481 | |
442e4d9c YQ |
6482 | /* Finish up the debug error message. */ |
6483 | if (info_verbose) | |
6484 | printf_filtered (_("done.\n")); | |
c906108c | 6485 | } |
95554aad TT |
6486 | |
6487 | process_cu_includes (); | |
c906108c | 6488 | } |
9cdd5dbd DE |
6489 | \f |
6490 | /* Reading in full CUs. */ | |
c906108c | 6491 | |
10b3939b DJ |
6492 | /* Add PER_CU to the queue. */ |
6493 | ||
6494 | static void | |
95554aad TT |
6495 | queue_comp_unit (struct dwarf2_per_cu_data *per_cu, |
6496 | enum language pretend_language) | |
10b3939b DJ |
6497 | { |
6498 | struct dwarf2_queue_item *item; | |
6499 | ||
6500 | per_cu->queued = 1; | |
6501 | item = xmalloc (sizeof (*item)); | |
6502 | item->per_cu = per_cu; | |
95554aad | 6503 | item->pretend_language = pretend_language; |
10b3939b DJ |
6504 | item->next = NULL; |
6505 | ||
6506 | if (dwarf2_queue == NULL) | |
6507 | dwarf2_queue = item; | |
6508 | else | |
6509 | dwarf2_queue_tail->next = item; | |
6510 | ||
6511 | dwarf2_queue_tail = item; | |
6512 | } | |
6513 | ||
0907af0c DE |
6514 | /* THIS_CU has a reference to PER_CU. If necessary, load the new compilation |
6515 | unit and add it to our queue. | |
6516 | The result is non-zero if PER_CU was queued, otherwise the result is zero | |
6517 | meaning either PER_CU is already queued or it is already loaded. */ | |
6518 | ||
6519 | static int | |
6520 | maybe_queue_comp_unit (struct dwarf2_cu *this_cu, | |
6521 | struct dwarf2_per_cu_data *per_cu, | |
6522 | enum language pretend_language) | |
6523 | { | |
6524 | /* We may arrive here during partial symbol reading, if we need full | |
6525 | DIEs to process an unusual case (e.g. template arguments). Do | |
6526 | not queue PER_CU, just tell our caller to load its DIEs. */ | |
6527 | if (dwarf2_per_objfile->reading_partial_symbols) | |
6528 | { | |
6529 | if (per_cu->cu == NULL || per_cu->cu->dies == NULL) | |
6530 | return 1; | |
6531 | return 0; | |
6532 | } | |
6533 | ||
6534 | /* Mark the dependence relation so that we don't flush PER_CU | |
6535 | too early. */ | |
6536 | dwarf2_add_dependence (this_cu, per_cu); | |
6537 | ||
6538 | /* If it's already on the queue, we have nothing to do. */ | |
6539 | if (per_cu->queued) | |
6540 | return 0; | |
6541 | ||
6542 | /* If the compilation unit is already loaded, just mark it as | |
6543 | used. */ | |
6544 | if (per_cu->cu != NULL) | |
6545 | { | |
6546 | per_cu->cu->last_used = 0; | |
6547 | return 0; | |
6548 | } | |
6549 | ||
6550 | /* Add it to the queue. */ | |
6551 | queue_comp_unit (per_cu, pretend_language); | |
6552 | ||
6553 | return 1; | |
6554 | } | |
6555 | ||
10b3939b DJ |
6556 | /* Process the queue. */ |
6557 | ||
6558 | static void | |
a0f42c21 | 6559 | process_queue (void) |
10b3939b DJ |
6560 | { |
6561 | struct dwarf2_queue_item *item, *next_item; | |
6562 | ||
45cfd468 DE |
6563 | if (dwarf2_read_debug) |
6564 | { | |
6565 | fprintf_unfiltered (gdb_stdlog, | |
6566 | "Expanding one or more symtabs of objfile %s ...\n", | |
6567 | dwarf2_per_objfile->objfile->name); | |
6568 | } | |
6569 | ||
03dd20cc DJ |
6570 | /* The queue starts out with one item, but following a DIE reference |
6571 | may load a new CU, adding it to the end of the queue. */ | |
10b3939b DJ |
6572 | for (item = dwarf2_queue; item != NULL; dwarf2_queue = item = next_item) |
6573 | { | |
9291a0cd TT |
6574 | if (dwarf2_per_objfile->using_index |
6575 | ? !item->per_cu->v.quick->symtab | |
6576 | : (item->per_cu->v.psymtab && !item->per_cu->v.psymtab->readin)) | |
f4dc4d17 DE |
6577 | { |
6578 | struct dwarf2_per_cu_data *per_cu = item->per_cu; | |
6579 | ||
6580 | if (dwarf2_read_debug) | |
6581 | { | |
6582 | fprintf_unfiltered (gdb_stdlog, | |
6583 | "Expanding symtab of %s at offset 0x%x\n", | |
6584 | per_cu->is_debug_types ? "TU" : "CU", | |
6585 | per_cu->offset.sect_off); | |
6586 | } | |
6587 | ||
6588 | if (per_cu->is_debug_types) | |
6589 | process_full_type_unit (per_cu, item->pretend_language); | |
6590 | else | |
6591 | process_full_comp_unit (per_cu, item->pretend_language); | |
6592 | ||
6593 | if (dwarf2_read_debug) | |
6594 | { | |
6595 | fprintf_unfiltered (gdb_stdlog, | |
6596 | "Done expanding %s at offset 0x%x\n", | |
6597 | per_cu->is_debug_types ? "TU" : "CU", | |
6598 | per_cu->offset.sect_off); | |
6599 | } | |
6600 | } | |
10b3939b DJ |
6601 | |
6602 | item->per_cu->queued = 0; | |
6603 | next_item = item->next; | |
6604 | xfree (item); | |
6605 | } | |
6606 | ||
6607 | dwarf2_queue_tail = NULL; | |
45cfd468 DE |
6608 | |
6609 | if (dwarf2_read_debug) | |
6610 | { | |
6611 | fprintf_unfiltered (gdb_stdlog, "Done expanding symtabs of %s.\n", | |
6612 | dwarf2_per_objfile->objfile->name); | |
6613 | } | |
10b3939b DJ |
6614 | } |
6615 | ||
6616 | /* Free all allocated queue entries. This function only releases anything if | |
6617 | an error was thrown; if the queue was processed then it would have been | |
6618 | freed as we went along. */ | |
6619 | ||
6620 | static void | |
6621 | dwarf2_release_queue (void *dummy) | |
6622 | { | |
6623 | struct dwarf2_queue_item *item, *last; | |
6624 | ||
6625 | item = dwarf2_queue; | |
6626 | while (item) | |
6627 | { | |
6628 | /* Anything still marked queued is likely to be in an | |
6629 | inconsistent state, so discard it. */ | |
6630 | if (item->per_cu->queued) | |
6631 | { | |
6632 | if (item->per_cu->cu != NULL) | |
dee91e82 | 6633 | free_one_cached_comp_unit (item->per_cu); |
10b3939b DJ |
6634 | item->per_cu->queued = 0; |
6635 | } | |
6636 | ||
6637 | last = item; | |
6638 | item = item->next; | |
6639 | xfree (last); | |
6640 | } | |
6641 | ||
6642 | dwarf2_queue = dwarf2_queue_tail = NULL; | |
6643 | } | |
6644 | ||
6645 | /* Read in full symbols for PST, and anything it depends on. */ | |
6646 | ||
c906108c | 6647 | static void |
fba45db2 | 6648 | psymtab_to_symtab_1 (struct partial_symtab *pst) |
c906108c | 6649 | { |
10b3939b | 6650 | struct dwarf2_per_cu_data *per_cu; |
aaa75496 JB |
6651 | int i; |
6652 | ||
95554aad TT |
6653 | if (pst->readin) |
6654 | return; | |
6655 | ||
aaa75496 | 6656 | for (i = 0; i < pst->number_of_dependencies; i++) |
95554aad TT |
6657 | if (!pst->dependencies[i]->readin |
6658 | && pst->dependencies[i]->user == NULL) | |
aaa75496 JB |
6659 | { |
6660 | /* Inform about additional files that need to be read in. */ | |
6661 | if (info_verbose) | |
6662 | { | |
a3f17187 | 6663 | /* FIXME: i18n: Need to make this a single string. */ |
aaa75496 JB |
6664 | fputs_filtered (" ", gdb_stdout); |
6665 | wrap_here (""); | |
6666 | fputs_filtered ("and ", gdb_stdout); | |
6667 | wrap_here (""); | |
6668 | printf_filtered ("%s...", pst->dependencies[i]->filename); | |
0963b4bd | 6669 | wrap_here (""); /* Flush output. */ |
aaa75496 JB |
6670 | gdb_flush (gdb_stdout); |
6671 | } | |
6672 | psymtab_to_symtab_1 (pst->dependencies[i]); | |
6673 | } | |
6674 | ||
e38df1d0 | 6675 | per_cu = pst->read_symtab_private; |
10b3939b DJ |
6676 | |
6677 | if (per_cu == NULL) | |
aaa75496 JB |
6678 | { |
6679 | /* It's an include file, no symbols to read for it. | |
6680 | Everything is in the parent symtab. */ | |
6681 | pst->readin = 1; | |
6682 | return; | |
6683 | } | |
c906108c | 6684 | |
a0f42c21 | 6685 | dw2_do_instantiate_symtab (per_cu); |
10b3939b DJ |
6686 | } |
6687 | ||
dee91e82 DE |
6688 | /* Trivial hash function for die_info: the hash value of a DIE |
6689 | is its offset in .debug_info for this objfile. */ | |
10b3939b | 6690 | |
dee91e82 DE |
6691 | static hashval_t |
6692 | die_hash (const void *item) | |
10b3939b | 6693 | { |
dee91e82 | 6694 | const struct die_info *die = item; |
6502dd73 | 6695 | |
dee91e82 DE |
6696 | return die->offset.sect_off; |
6697 | } | |
63d06c5c | 6698 | |
dee91e82 DE |
6699 | /* Trivial comparison function for die_info structures: two DIEs |
6700 | are equal if they have the same offset. */ | |
98bfdba5 | 6701 | |
dee91e82 DE |
6702 | static int |
6703 | die_eq (const void *item_lhs, const void *item_rhs) | |
6704 | { | |
6705 | const struct die_info *die_lhs = item_lhs; | |
6706 | const struct die_info *die_rhs = item_rhs; | |
c906108c | 6707 | |
dee91e82 DE |
6708 | return die_lhs->offset.sect_off == die_rhs->offset.sect_off; |
6709 | } | |
c906108c | 6710 | |
dee91e82 DE |
6711 | /* die_reader_func for load_full_comp_unit. |
6712 | This is identical to read_signatured_type_reader, | |
6713 | but is kept separate for now. */ | |
c906108c | 6714 | |
dee91e82 DE |
6715 | static void |
6716 | load_full_comp_unit_reader (const struct die_reader_specs *reader, | |
6717 | gdb_byte *info_ptr, | |
6718 | struct die_info *comp_unit_die, | |
6719 | int has_children, | |
6720 | void *data) | |
6721 | { | |
6722 | struct dwarf2_cu *cu = reader->cu; | |
95554aad | 6723 | enum language *language_ptr = data; |
6caca83c | 6724 | |
dee91e82 DE |
6725 | gdb_assert (cu->die_hash == NULL); |
6726 | cu->die_hash = | |
6727 | htab_create_alloc_ex (cu->header.length / 12, | |
6728 | die_hash, | |
6729 | die_eq, | |
6730 | NULL, | |
6731 | &cu->comp_unit_obstack, | |
6732 | hashtab_obstack_allocate, | |
6733 | dummy_obstack_deallocate); | |
e142c38c | 6734 | |
dee91e82 DE |
6735 | if (has_children) |
6736 | comp_unit_die->child = read_die_and_siblings (reader, info_ptr, | |
6737 | &info_ptr, comp_unit_die); | |
6738 | cu->dies = comp_unit_die; | |
6739 | /* comp_unit_die is not stored in die_hash, no need. */ | |
10b3939b DJ |
6740 | |
6741 | /* We try not to read any attributes in this function, because not | |
9cdd5dbd | 6742 | all CUs needed for references have been loaded yet, and symbol |
10b3939b | 6743 | table processing isn't initialized. But we have to set the CU language, |
dee91e82 DE |
6744 | or we won't be able to build types correctly. |
6745 | Similarly, if we do not read the producer, we can not apply | |
6746 | producer-specific interpretation. */ | |
95554aad | 6747 | prepare_one_comp_unit (cu, cu->dies, *language_ptr); |
dee91e82 | 6748 | } |
10b3939b | 6749 | |
dee91e82 | 6750 | /* Load the DIEs associated with PER_CU into memory. */ |
a6c727b2 | 6751 | |
dee91e82 | 6752 | static void |
95554aad TT |
6753 | load_full_comp_unit (struct dwarf2_per_cu_data *this_cu, |
6754 | enum language pretend_language) | |
dee91e82 | 6755 | { |
3019eac3 | 6756 | gdb_assert (! this_cu->is_debug_types); |
c5b7e1cb | 6757 | |
f4dc4d17 DE |
6758 | init_cutu_and_read_dies (this_cu, NULL, 1, 1, |
6759 | load_full_comp_unit_reader, &pretend_language); | |
10b3939b DJ |
6760 | } |
6761 | ||
3da10d80 KS |
6762 | /* Add a DIE to the delayed physname list. */ |
6763 | ||
6764 | static void | |
6765 | add_to_method_list (struct type *type, int fnfield_index, int index, | |
6766 | const char *name, struct die_info *die, | |
6767 | struct dwarf2_cu *cu) | |
6768 | { | |
6769 | struct delayed_method_info mi; | |
6770 | mi.type = type; | |
6771 | mi.fnfield_index = fnfield_index; | |
6772 | mi.index = index; | |
6773 | mi.name = name; | |
6774 | mi.die = die; | |
6775 | VEC_safe_push (delayed_method_info, cu->method_list, &mi); | |
6776 | } | |
6777 | ||
6778 | /* A cleanup for freeing the delayed method list. */ | |
6779 | ||
6780 | static void | |
6781 | free_delayed_list (void *ptr) | |
6782 | { | |
6783 | struct dwarf2_cu *cu = (struct dwarf2_cu *) ptr; | |
6784 | if (cu->method_list != NULL) | |
6785 | { | |
6786 | VEC_free (delayed_method_info, cu->method_list); | |
6787 | cu->method_list = NULL; | |
6788 | } | |
6789 | } | |
6790 | ||
6791 | /* Compute the physnames of any methods on the CU's method list. | |
6792 | ||
6793 | The computation of method physnames is delayed in order to avoid the | |
6794 | (bad) condition that one of the method's formal parameters is of an as yet | |
6795 | incomplete type. */ | |
6796 | ||
6797 | static void | |
6798 | compute_delayed_physnames (struct dwarf2_cu *cu) | |
6799 | { | |
6800 | int i; | |
6801 | struct delayed_method_info *mi; | |
6802 | for (i = 0; VEC_iterate (delayed_method_info, cu->method_list, i, mi) ; ++i) | |
6803 | { | |
1d06ead6 | 6804 | const char *physname; |
3da10d80 KS |
6805 | struct fn_fieldlist *fn_flp |
6806 | = &TYPE_FN_FIELDLIST (mi->type, mi->fnfield_index); | |
7d455152 | 6807 | physname = dwarf2_physname (mi->name, mi->die, cu); |
3da10d80 KS |
6808 | fn_flp->fn_fields[mi->index].physname = physname ? physname : ""; |
6809 | } | |
6810 | } | |
6811 | ||
a766d390 DE |
6812 | /* Go objects should be embedded in a DW_TAG_module DIE, |
6813 | and it's not clear if/how imported objects will appear. | |
6814 | To keep Go support simple until that's worked out, | |
6815 | go back through what we've read and create something usable. | |
6816 | We could do this while processing each DIE, and feels kinda cleaner, | |
6817 | but that way is more invasive. | |
6818 | This is to, for example, allow the user to type "p var" or "b main" | |
6819 | without having to specify the package name, and allow lookups | |
6820 | of module.object to work in contexts that use the expression | |
6821 | parser. */ | |
6822 | ||
6823 | static void | |
6824 | fixup_go_packaging (struct dwarf2_cu *cu) | |
6825 | { | |
6826 | char *package_name = NULL; | |
6827 | struct pending *list; | |
6828 | int i; | |
6829 | ||
6830 | for (list = global_symbols; list != NULL; list = list->next) | |
6831 | { | |
6832 | for (i = 0; i < list->nsyms; ++i) | |
6833 | { | |
6834 | struct symbol *sym = list->symbol[i]; | |
6835 | ||
6836 | if (SYMBOL_LANGUAGE (sym) == language_go | |
6837 | && SYMBOL_CLASS (sym) == LOC_BLOCK) | |
6838 | { | |
6839 | char *this_package_name = go_symbol_package_name (sym); | |
6840 | ||
6841 | if (this_package_name == NULL) | |
6842 | continue; | |
6843 | if (package_name == NULL) | |
6844 | package_name = this_package_name; | |
6845 | else | |
6846 | { | |
6847 | if (strcmp (package_name, this_package_name) != 0) | |
6848 | complaint (&symfile_complaints, | |
6849 | _("Symtab %s has objects from two different Go packages: %s and %s"), | |
210bbc17 | 6850 | (SYMBOL_SYMTAB (sym) |
05cba821 | 6851 | ? symtab_to_filename_for_display (SYMBOL_SYMTAB (sym)) |
a766d390 DE |
6852 | : cu->objfile->name), |
6853 | this_package_name, package_name); | |
6854 | xfree (this_package_name); | |
6855 | } | |
6856 | } | |
6857 | } | |
6858 | } | |
6859 | ||
6860 | if (package_name != NULL) | |
6861 | { | |
6862 | struct objfile *objfile = cu->objfile; | |
10f0c4bb TT |
6863 | const char *saved_package_name = obstack_copy0 (&objfile->objfile_obstack, |
6864 | package_name, | |
6865 | strlen (package_name)); | |
a766d390 | 6866 | struct type *type = init_type (TYPE_CODE_MODULE, 0, 0, |
86f62fd7 | 6867 | saved_package_name, objfile); |
a766d390 DE |
6868 | struct symbol *sym; |
6869 | ||
6870 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
6871 | ||
6872 | sym = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct symbol); | |
6873 | SYMBOL_SET_LANGUAGE (sym, language_go); | |
86f62fd7 TT |
6874 | SYMBOL_SET_NAMES (sym, saved_package_name, |
6875 | strlen (saved_package_name), 0, objfile); | |
a766d390 DE |
6876 | /* This is not VAR_DOMAIN because we want a way to ensure a lookup of, |
6877 | e.g., "main" finds the "main" module and not C's main(). */ | |
6878 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; | |
f1e6e072 | 6879 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
a766d390 DE |
6880 | SYMBOL_TYPE (sym) = type; |
6881 | ||
6882 | add_symbol_to_list (sym, &global_symbols); | |
6883 | ||
6884 | xfree (package_name); | |
6885 | } | |
6886 | } | |
6887 | ||
95554aad TT |
6888 | /* Return the symtab for PER_CU. This works properly regardless of |
6889 | whether we're using the index or psymtabs. */ | |
6890 | ||
6891 | static struct symtab * | |
6892 | get_symtab (struct dwarf2_per_cu_data *per_cu) | |
6893 | { | |
6894 | return (dwarf2_per_objfile->using_index | |
6895 | ? per_cu->v.quick->symtab | |
6896 | : per_cu->v.psymtab->symtab); | |
6897 | } | |
6898 | ||
6899 | /* A helper function for computing the list of all symbol tables | |
6900 | included by PER_CU. */ | |
6901 | ||
6902 | static void | |
6903 | recursively_compute_inclusions (VEC (dwarf2_per_cu_ptr) **result, | |
6904 | htab_t all_children, | |
6905 | struct dwarf2_per_cu_data *per_cu) | |
6906 | { | |
6907 | void **slot; | |
6908 | int ix; | |
6909 | struct dwarf2_per_cu_data *iter; | |
6910 | ||
6911 | slot = htab_find_slot (all_children, per_cu, INSERT); | |
6912 | if (*slot != NULL) | |
6913 | { | |
6914 | /* This inclusion and its children have been processed. */ | |
6915 | return; | |
6916 | } | |
6917 | ||
6918 | *slot = per_cu; | |
6919 | /* Only add a CU if it has a symbol table. */ | |
6920 | if (get_symtab (per_cu) != NULL) | |
6921 | VEC_safe_push (dwarf2_per_cu_ptr, *result, per_cu); | |
6922 | ||
6923 | for (ix = 0; | |
796a7ff8 | 6924 | VEC_iterate (dwarf2_per_cu_ptr, per_cu->imported_symtabs, ix, iter); |
95554aad TT |
6925 | ++ix) |
6926 | recursively_compute_inclusions (result, all_children, iter); | |
6927 | } | |
6928 | ||
6929 | /* Compute the symtab 'includes' fields for the symtab related to | |
6930 | PER_CU. */ | |
6931 | ||
6932 | static void | |
6933 | compute_symtab_includes (struct dwarf2_per_cu_data *per_cu) | |
6934 | { | |
f4dc4d17 DE |
6935 | gdb_assert (! per_cu->is_debug_types); |
6936 | ||
796a7ff8 | 6937 | if (!VEC_empty (dwarf2_per_cu_ptr, per_cu->imported_symtabs)) |
95554aad TT |
6938 | { |
6939 | int ix, len; | |
6940 | struct dwarf2_per_cu_data *iter; | |
6941 | VEC (dwarf2_per_cu_ptr) *result_children = NULL; | |
6942 | htab_t all_children; | |
6943 | struct symtab *symtab = get_symtab (per_cu); | |
6944 | ||
6945 | /* If we don't have a symtab, we can just skip this case. */ | |
6946 | if (symtab == NULL) | |
6947 | return; | |
6948 | ||
6949 | all_children = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, | |
6950 | NULL, xcalloc, xfree); | |
6951 | ||
6952 | for (ix = 0; | |
796a7ff8 | 6953 | VEC_iterate (dwarf2_per_cu_ptr, per_cu->imported_symtabs, |
95554aad TT |
6954 | ix, iter); |
6955 | ++ix) | |
6956 | recursively_compute_inclusions (&result_children, all_children, iter); | |
6957 | ||
796a7ff8 DE |
6958 | /* Now we have a transitive closure of all the included CUs, and |
6959 | for .gdb_index version 7 the included TUs, so we can convert it | |
6960 | to a list of symtabs. */ | |
95554aad TT |
6961 | len = VEC_length (dwarf2_per_cu_ptr, result_children); |
6962 | symtab->includes | |
6963 | = obstack_alloc (&dwarf2_per_objfile->objfile->objfile_obstack, | |
6964 | (len + 1) * sizeof (struct symtab *)); | |
6965 | for (ix = 0; | |
6966 | VEC_iterate (dwarf2_per_cu_ptr, result_children, ix, iter); | |
6967 | ++ix) | |
6968 | symtab->includes[ix] = get_symtab (iter); | |
6969 | symtab->includes[len] = NULL; | |
6970 | ||
6971 | VEC_free (dwarf2_per_cu_ptr, result_children); | |
6972 | htab_delete (all_children); | |
6973 | } | |
6974 | } | |
6975 | ||
6976 | /* Compute the 'includes' field for the symtabs of all the CUs we just | |
6977 | read. */ | |
6978 | ||
6979 | static void | |
6980 | process_cu_includes (void) | |
6981 | { | |
6982 | int ix; | |
6983 | struct dwarf2_per_cu_data *iter; | |
6984 | ||
6985 | for (ix = 0; | |
6986 | VEC_iterate (dwarf2_per_cu_ptr, dwarf2_per_objfile->just_read_cus, | |
6987 | ix, iter); | |
6988 | ++ix) | |
f4dc4d17 DE |
6989 | { |
6990 | if (! iter->is_debug_types) | |
6991 | compute_symtab_includes (iter); | |
6992 | } | |
95554aad TT |
6993 | |
6994 | VEC_free (dwarf2_per_cu_ptr, dwarf2_per_objfile->just_read_cus); | |
6995 | } | |
6996 | ||
9cdd5dbd | 6997 | /* Generate full symbol information for PER_CU, whose DIEs have |
10b3939b DJ |
6998 | already been loaded into memory. */ |
6999 | ||
7000 | static void | |
95554aad TT |
7001 | process_full_comp_unit (struct dwarf2_per_cu_data *per_cu, |
7002 | enum language pretend_language) | |
10b3939b | 7003 | { |
10b3939b | 7004 | struct dwarf2_cu *cu = per_cu->cu; |
9291a0cd | 7005 | struct objfile *objfile = per_cu->objfile; |
10b3939b DJ |
7006 | CORE_ADDR lowpc, highpc; |
7007 | struct symtab *symtab; | |
3da10d80 | 7008 | struct cleanup *back_to, *delayed_list_cleanup; |
10b3939b | 7009 | CORE_ADDR baseaddr; |
4359dff1 | 7010 | struct block *static_block; |
10b3939b DJ |
7011 | |
7012 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
7013 | ||
10b3939b DJ |
7014 | buildsym_init (); |
7015 | back_to = make_cleanup (really_free_pendings, NULL); | |
3da10d80 | 7016 | delayed_list_cleanup = make_cleanup (free_delayed_list, cu); |
10b3939b DJ |
7017 | |
7018 | cu->list_in_scope = &file_symbols; | |
c906108c | 7019 | |
95554aad TT |
7020 | cu->language = pretend_language; |
7021 | cu->language_defn = language_def (cu->language); | |
7022 | ||
c906108c | 7023 | /* Do line number decoding in read_file_scope () */ |
10b3939b | 7024 | process_die (cu->dies, cu); |
c906108c | 7025 | |
a766d390 DE |
7026 | /* For now fudge the Go package. */ |
7027 | if (cu->language == language_go) | |
7028 | fixup_go_packaging (cu); | |
7029 | ||
3da10d80 KS |
7030 | /* Now that we have processed all the DIEs in the CU, all the types |
7031 | should be complete, and it should now be safe to compute all of the | |
7032 | physnames. */ | |
7033 | compute_delayed_physnames (cu); | |
7034 | do_cleanups (delayed_list_cleanup); | |
7035 | ||
fae299cd DC |
7036 | /* Some compilers don't define a DW_AT_high_pc attribute for the |
7037 | compilation unit. If the DW_AT_high_pc is missing, synthesize | |
7038 | it, by scanning the DIE's below the compilation unit. */ | |
10b3939b | 7039 | get_scope_pc_bounds (cu->dies, &lowpc, &highpc, cu); |
c906108c | 7040 | |
36586728 TT |
7041 | static_block |
7042 | = end_symtab_get_static_block (highpc + baseaddr, objfile, 0, | |
796a7ff8 | 7043 | per_cu->imported_symtabs != NULL); |
4359dff1 JK |
7044 | |
7045 | /* If the comp unit has DW_AT_ranges, it may have discontiguous ranges. | |
7046 | Also, DW_AT_ranges may record ranges not belonging to any child DIEs | |
7047 | (such as virtual method tables). Record the ranges in STATIC_BLOCK's | |
7048 | addrmap to help ensure it has an accurate map of pc values belonging to | |
7049 | this comp unit. */ | |
7050 | dwarf2_record_block_ranges (cu->dies, static_block, baseaddr, cu); | |
7051 | ||
7052 | symtab = end_symtab_from_static_block (static_block, objfile, | |
7053 | SECT_OFF_TEXT (objfile), 0); | |
c906108c | 7054 | |
8be455d7 | 7055 | if (symtab != NULL) |
c906108c | 7056 | { |
df15bd07 | 7057 | int gcc_4_minor = producer_is_gcc_ge_4 (cu->producer); |
4632c0d0 | 7058 | |
8be455d7 JK |
7059 | /* Set symtab language to language from DW_AT_language. If the |
7060 | compilation is from a C file generated by language preprocessors, do | |
7061 | not set the language if it was already deduced by start_subfile. */ | |
7062 | if (!(cu->language == language_c && symtab->language != language_c)) | |
7063 | symtab->language = cu->language; | |
7064 | ||
7065 | /* GCC-4.0 has started to support -fvar-tracking. GCC-3.x still can | |
7066 | produce DW_AT_location with location lists but it can be possibly | |
ab260dad JK |
7067 | invalid without -fvar-tracking. Still up to GCC-4.4.x incl. 4.4.0 |
7068 | there were bugs in prologue debug info, fixed later in GCC-4.5 | |
7069 | by "unwind info for epilogues" patch (which is not directly related). | |
8be455d7 JK |
7070 | |
7071 | For -gdwarf-4 type units LOCATIONS_VALID indication is fortunately not | |
7072 | needed, it would be wrong due to missing DW_AT_producer there. | |
7073 | ||
7074 | Still one can confuse GDB by using non-standard GCC compilation | |
7075 | options - this waits on GCC PR other/32998 (-frecord-gcc-switches). | |
7076 | */ | |
ab260dad | 7077 | if (cu->has_loclist && gcc_4_minor >= 5) |
8be455d7 | 7078 | symtab->locations_valid = 1; |
e0d00bc7 JK |
7079 | |
7080 | if (gcc_4_minor >= 5) | |
7081 | symtab->epilogue_unwind_valid = 1; | |
96408a79 SA |
7082 | |
7083 | symtab->call_site_htab = cu->call_site_htab; | |
c906108c | 7084 | } |
9291a0cd TT |
7085 | |
7086 | if (dwarf2_per_objfile->using_index) | |
7087 | per_cu->v.quick->symtab = symtab; | |
7088 | else | |
7089 | { | |
7090 | struct partial_symtab *pst = per_cu->v.psymtab; | |
7091 | pst->symtab = symtab; | |
7092 | pst->readin = 1; | |
7093 | } | |
c906108c | 7094 | |
95554aad TT |
7095 | /* Push it for inclusion processing later. */ |
7096 | VEC_safe_push (dwarf2_per_cu_ptr, dwarf2_per_objfile->just_read_cus, per_cu); | |
7097 | ||
c906108c | 7098 | do_cleanups (back_to); |
f4dc4d17 | 7099 | } |
45cfd468 | 7100 | |
f4dc4d17 DE |
7101 | /* Generate full symbol information for type unit PER_CU, whose DIEs have |
7102 | already been loaded into memory. */ | |
7103 | ||
7104 | static void | |
7105 | process_full_type_unit (struct dwarf2_per_cu_data *per_cu, | |
7106 | enum language pretend_language) | |
7107 | { | |
7108 | struct dwarf2_cu *cu = per_cu->cu; | |
7109 | struct objfile *objfile = per_cu->objfile; | |
7110 | struct symtab *symtab; | |
7111 | struct cleanup *back_to, *delayed_list_cleanup; | |
7112 | ||
7113 | buildsym_init (); | |
7114 | back_to = make_cleanup (really_free_pendings, NULL); | |
7115 | delayed_list_cleanup = make_cleanup (free_delayed_list, cu); | |
7116 | ||
7117 | cu->list_in_scope = &file_symbols; | |
7118 | ||
7119 | cu->language = pretend_language; | |
7120 | cu->language_defn = language_def (cu->language); | |
7121 | ||
7122 | /* The symbol tables are set up in read_type_unit_scope. */ | |
7123 | process_die (cu->dies, cu); | |
7124 | ||
7125 | /* For now fudge the Go package. */ | |
7126 | if (cu->language == language_go) | |
7127 | fixup_go_packaging (cu); | |
7128 | ||
7129 | /* Now that we have processed all the DIEs in the CU, all the types | |
7130 | should be complete, and it should now be safe to compute all of the | |
7131 | physnames. */ | |
7132 | compute_delayed_physnames (cu); | |
7133 | do_cleanups (delayed_list_cleanup); | |
7134 | ||
7135 | /* TUs share symbol tables. | |
7136 | If this is the first TU to use this symtab, complete the construction | |
094b34ac DE |
7137 | of it with end_expandable_symtab. Otherwise, complete the addition of |
7138 | this TU's symbols to the existing symtab. */ | |
796a7ff8 | 7139 | if (per_cu->type_unit_group->primary_symtab == NULL) |
45cfd468 | 7140 | { |
f4dc4d17 | 7141 | symtab = end_expandable_symtab (0, objfile, SECT_OFF_TEXT (objfile)); |
796a7ff8 | 7142 | per_cu->type_unit_group->primary_symtab = symtab; |
f4dc4d17 DE |
7143 | |
7144 | if (symtab != NULL) | |
7145 | { | |
7146 | /* Set symtab language to language from DW_AT_language. If the | |
7147 | compilation is from a C file generated by language preprocessors, | |
7148 | do not set the language if it was already deduced by | |
7149 | start_subfile. */ | |
7150 | if (!(cu->language == language_c && symtab->language != language_c)) | |
7151 | symtab->language = cu->language; | |
7152 | } | |
7153 | } | |
7154 | else | |
7155 | { | |
7156 | augment_type_symtab (objfile, | |
796a7ff8 DE |
7157 | per_cu->type_unit_group->primary_symtab); |
7158 | symtab = per_cu->type_unit_group->primary_symtab; | |
f4dc4d17 DE |
7159 | } |
7160 | ||
7161 | if (dwarf2_per_objfile->using_index) | |
7162 | per_cu->v.quick->symtab = symtab; | |
7163 | else | |
7164 | { | |
7165 | struct partial_symtab *pst = per_cu->v.psymtab; | |
7166 | pst->symtab = symtab; | |
7167 | pst->readin = 1; | |
45cfd468 | 7168 | } |
f4dc4d17 DE |
7169 | |
7170 | do_cleanups (back_to); | |
c906108c SS |
7171 | } |
7172 | ||
95554aad TT |
7173 | /* Process an imported unit DIE. */ |
7174 | ||
7175 | static void | |
7176 | process_imported_unit_die (struct die_info *die, struct dwarf2_cu *cu) | |
7177 | { | |
7178 | struct attribute *attr; | |
7179 | ||
f4dc4d17 DE |
7180 | /* For now we don't handle imported units in type units. */ |
7181 | if (cu->per_cu->is_debug_types) | |
7182 | { | |
7183 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
7184 | " supported in type units [in module %s]"), | |
7185 | cu->objfile->name); | |
7186 | } | |
7187 | ||
95554aad TT |
7188 | attr = dwarf2_attr (die, DW_AT_import, cu); |
7189 | if (attr != NULL) | |
7190 | { | |
7191 | struct dwarf2_per_cu_data *per_cu; | |
7192 | struct symtab *imported_symtab; | |
7193 | sect_offset offset; | |
36586728 | 7194 | int is_dwz; |
95554aad TT |
7195 | |
7196 | offset = dwarf2_get_ref_die_offset (attr); | |
36586728 TT |
7197 | is_dwz = (attr->form == DW_FORM_GNU_ref_alt || cu->per_cu->is_dwz); |
7198 | per_cu = dwarf2_find_containing_comp_unit (offset, is_dwz, cu->objfile); | |
95554aad TT |
7199 | |
7200 | /* Queue the unit, if needed. */ | |
7201 | if (maybe_queue_comp_unit (cu, per_cu, cu->language)) | |
7202 | load_full_comp_unit (per_cu, cu->language); | |
7203 | ||
796a7ff8 | 7204 | VEC_safe_push (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs, |
95554aad TT |
7205 | per_cu); |
7206 | } | |
7207 | } | |
7208 | ||
c906108c SS |
7209 | /* Process a die and its children. */ |
7210 | ||
7211 | static void | |
e7c27a73 | 7212 | process_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
7213 | { |
7214 | switch (die->tag) | |
7215 | { | |
7216 | case DW_TAG_padding: | |
7217 | break; | |
7218 | case DW_TAG_compile_unit: | |
95554aad | 7219 | case DW_TAG_partial_unit: |
e7c27a73 | 7220 | read_file_scope (die, cu); |
c906108c | 7221 | break; |
348e048f DE |
7222 | case DW_TAG_type_unit: |
7223 | read_type_unit_scope (die, cu); | |
7224 | break; | |
c906108c | 7225 | case DW_TAG_subprogram: |
c906108c | 7226 | case DW_TAG_inlined_subroutine: |
edb3359d | 7227 | read_func_scope (die, cu); |
c906108c SS |
7228 | break; |
7229 | case DW_TAG_lexical_block: | |
14898363 L |
7230 | case DW_TAG_try_block: |
7231 | case DW_TAG_catch_block: | |
e7c27a73 | 7232 | read_lexical_block_scope (die, cu); |
c906108c | 7233 | break; |
96408a79 SA |
7234 | case DW_TAG_GNU_call_site: |
7235 | read_call_site_scope (die, cu); | |
7236 | break; | |
c906108c | 7237 | case DW_TAG_class_type: |
680b30c7 | 7238 | case DW_TAG_interface_type: |
c906108c SS |
7239 | case DW_TAG_structure_type: |
7240 | case DW_TAG_union_type: | |
134d01f1 | 7241 | process_structure_scope (die, cu); |
c906108c SS |
7242 | break; |
7243 | case DW_TAG_enumeration_type: | |
134d01f1 | 7244 | process_enumeration_scope (die, cu); |
c906108c | 7245 | break; |
134d01f1 | 7246 | |
f792889a DJ |
7247 | /* These dies have a type, but processing them does not create |
7248 | a symbol or recurse to process the children. Therefore we can | |
7249 | read them on-demand through read_type_die. */ | |
c906108c | 7250 | case DW_TAG_subroutine_type: |
72019c9c | 7251 | case DW_TAG_set_type: |
c906108c | 7252 | case DW_TAG_array_type: |
c906108c | 7253 | case DW_TAG_pointer_type: |
c906108c | 7254 | case DW_TAG_ptr_to_member_type: |
c906108c | 7255 | case DW_TAG_reference_type: |
c906108c | 7256 | case DW_TAG_string_type: |
c906108c | 7257 | break; |
134d01f1 | 7258 | |
c906108c | 7259 | case DW_TAG_base_type: |
a02abb62 | 7260 | case DW_TAG_subrange_type: |
cb249c71 | 7261 | case DW_TAG_typedef: |
134d01f1 DJ |
7262 | /* Add a typedef symbol for the type definition, if it has a |
7263 | DW_AT_name. */ | |
f792889a | 7264 | new_symbol (die, read_type_die (die, cu), cu); |
a02abb62 | 7265 | break; |
c906108c | 7266 | case DW_TAG_common_block: |
e7c27a73 | 7267 | read_common_block (die, cu); |
c906108c SS |
7268 | break; |
7269 | case DW_TAG_common_inclusion: | |
7270 | break; | |
d9fa45fe | 7271 | case DW_TAG_namespace: |
4d4ec4e5 | 7272 | cu->processing_has_namespace_info = 1; |
e7c27a73 | 7273 | read_namespace (die, cu); |
d9fa45fe | 7274 | break; |
5d7cb8df | 7275 | case DW_TAG_module: |
4d4ec4e5 | 7276 | cu->processing_has_namespace_info = 1; |
5d7cb8df JK |
7277 | read_module (die, cu); |
7278 | break; | |
d9fa45fe DC |
7279 | case DW_TAG_imported_declaration: |
7280 | case DW_TAG_imported_module: | |
4d4ec4e5 | 7281 | cu->processing_has_namespace_info = 1; |
27aa8d6a SW |
7282 | if (die->child != NULL && (die->tag == DW_TAG_imported_declaration |
7283 | || cu->language != language_fortran)) | |
7284 | complaint (&symfile_complaints, _("Tag '%s' has unexpected children"), | |
7285 | dwarf_tag_name (die->tag)); | |
7286 | read_import_statement (die, cu); | |
d9fa45fe | 7287 | break; |
95554aad TT |
7288 | |
7289 | case DW_TAG_imported_unit: | |
7290 | process_imported_unit_die (die, cu); | |
7291 | break; | |
7292 | ||
c906108c | 7293 | default: |
e7c27a73 | 7294 | new_symbol (die, NULL, cu); |
c906108c SS |
7295 | break; |
7296 | } | |
7297 | } | |
ca69b9e6 DE |
7298 | \f |
7299 | /* DWARF name computation. */ | |
c906108c | 7300 | |
94af9270 KS |
7301 | /* A helper function for dwarf2_compute_name which determines whether DIE |
7302 | needs to have the name of the scope prepended to the name listed in the | |
7303 | die. */ | |
7304 | ||
7305 | static int | |
7306 | die_needs_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
7307 | { | |
1c809c68 TT |
7308 | struct attribute *attr; |
7309 | ||
94af9270 KS |
7310 | switch (die->tag) |
7311 | { | |
7312 | case DW_TAG_namespace: | |
7313 | case DW_TAG_typedef: | |
7314 | case DW_TAG_class_type: | |
7315 | case DW_TAG_interface_type: | |
7316 | case DW_TAG_structure_type: | |
7317 | case DW_TAG_union_type: | |
7318 | case DW_TAG_enumeration_type: | |
7319 | case DW_TAG_enumerator: | |
7320 | case DW_TAG_subprogram: | |
7321 | case DW_TAG_member: | |
7322 | return 1; | |
7323 | ||
7324 | case DW_TAG_variable: | |
c2b0a229 | 7325 | case DW_TAG_constant: |
94af9270 KS |
7326 | /* We only need to prefix "globally" visible variables. These include |
7327 | any variable marked with DW_AT_external or any variable that | |
7328 | lives in a namespace. [Variables in anonymous namespaces | |
7329 | require prefixing, but they are not DW_AT_external.] */ | |
7330 | ||
7331 | if (dwarf2_attr (die, DW_AT_specification, cu)) | |
7332 | { | |
7333 | struct dwarf2_cu *spec_cu = cu; | |
9a619af0 | 7334 | |
94af9270 KS |
7335 | return die_needs_namespace (die_specification (die, &spec_cu), |
7336 | spec_cu); | |
7337 | } | |
7338 | ||
1c809c68 | 7339 | attr = dwarf2_attr (die, DW_AT_external, cu); |
f55ee35c JK |
7340 | if (attr == NULL && die->parent->tag != DW_TAG_namespace |
7341 | && die->parent->tag != DW_TAG_module) | |
1c809c68 TT |
7342 | return 0; |
7343 | /* A variable in a lexical block of some kind does not need a | |
7344 | namespace, even though in C++ such variables may be external | |
7345 | and have a mangled name. */ | |
7346 | if (die->parent->tag == DW_TAG_lexical_block | |
7347 | || die->parent->tag == DW_TAG_try_block | |
1054b214 TT |
7348 | || die->parent->tag == DW_TAG_catch_block |
7349 | || die->parent->tag == DW_TAG_subprogram) | |
1c809c68 TT |
7350 | return 0; |
7351 | return 1; | |
94af9270 KS |
7352 | |
7353 | default: | |
7354 | return 0; | |
7355 | } | |
7356 | } | |
7357 | ||
98bfdba5 PA |
7358 | /* Retrieve the last character from a mem_file. */ |
7359 | ||
7360 | static void | |
7361 | do_ui_file_peek_last (void *object, const char *buffer, long length) | |
7362 | { | |
7363 | char *last_char_p = (char *) object; | |
7364 | ||
7365 | if (length > 0) | |
7366 | *last_char_p = buffer[length - 1]; | |
7367 | } | |
7368 | ||
94af9270 | 7369 | /* Compute the fully qualified name of DIE in CU. If PHYSNAME is nonzero, |
a766d390 DE |
7370 | compute the physname for the object, which include a method's: |
7371 | - formal parameters (C++/Java), | |
7372 | - receiver type (Go), | |
7373 | - return type (Java). | |
7374 | ||
7375 | The term "physname" is a bit confusing. | |
7376 | For C++, for example, it is the demangled name. | |
7377 | For Go, for example, it's the mangled name. | |
94af9270 | 7378 | |
af6b7be1 JB |
7379 | For Ada, return the DIE's linkage name rather than the fully qualified |
7380 | name. PHYSNAME is ignored.. | |
7381 | ||
94af9270 KS |
7382 | The result is allocated on the objfile_obstack and canonicalized. */ |
7383 | ||
7384 | static const char * | |
15d034d0 TT |
7385 | dwarf2_compute_name (const char *name, |
7386 | struct die_info *die, struct dwarf2_cu *cu, | |
94af9270 KS |
7387 | int physname) |
7388 | { | |
bb5ed363 DE |
7389 | struct objfile *objfile = cu->objfile; |
7390 | ||
94af9270 KS |
7391 | if (name == NULL) |
7392 | name = dwarf2_name (die, cu); | |
7393 | ||
f55ee35c JK |
7394 | /* For Fortran GDB prefers DW_AT_*linkage_name if present but otherwise |
7395 | compute it by typename_concat inside GDB. */ | |
7396 | if (cu->language == language_ada | |
7397 | || (cu->language == language_fortran && physname)) | |
7398 | { | |
7399 | /* For Ada unit, we prefer the linkage name over the name, as | |
7400 | the former contains the exported name, which the user expects | |
7401 | to be able to reference. Ideally, we want the user to be able | |
7402 | to reference this entity using either natural or linkage name, | |
7403 | but we haven't started looking at this enhancement yet. */ | |
7404 | struct attribute *attr; | |
7405 | ||
7406 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
7407 | if (attr == NULL) | |
7408 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
7409 | if (attr && DW_STRING (attr)) | |
7410 | return DW_STRING (attr); | |
7411 | } | |
7412 | ||
94af9270 KS |
7413 | /* These are the only languages we know how to qualify names in. */ |
7414 | if (name != NULL | |
f55ee35c JK |
7415 | && (cu->language == language_cplus || cu->language == language_java |
7416 | || cu->language == language_fortran)) | |
94af9270 KS |
7417 | { |
7418 | if (die_needs_namespace (die, cu)) | |
7419 | { | |
7420 | long length; | |
0d5cff50 | 7421 | const char *prefix; |
94af9270 KS |
7422 | struct ui_file *buf; |
7423 | ||
7424 | prefix = determine_prefix (die, cu); | |
7425 | buf = mem_fileopen (); | |
7426 | if (*prefix != '\0') | |
7427 | { | |
f55ee35c JK |
7428 | char *prefixed_name = typename_concat (NULL, prefix, name, |
7429 | physname, cu); | |
9a619af0 | 7430 | |
94af9270 KS |
7431 | fputs_unfiltered (prefixed_name, buf); |
7432 | xfree (prefixed_name); | |
7433 | } | |
7434 | else | |
62d5b8da | 7435 | fputs_unfiltered (name, buf); |
94af9270 | 7436 | |
98bfdba5 PA |
7437 | /* Template parameters may be specified in the DIE's DW_AT_name, or |
7438 | as children with DW_TAG_template_type_param or | |
7439 | DW_TAG_value_type_param. If the latter, add them to the name | |
7440 | here. If the name already has template parameters, then | |
7441 | skip this step; some versions of GCC emit both, and | |
7442 | it is more efficient to use the pre-computed name. | |
7443 | ||
7444 | Something to keep in mind about this process: it is very | |
7445 | unlikely, or in some cases downright impossible, to produce | |
7446 | something that will match the mangled name of a function. | |
7447 | If the definition of the function has the same debug info, | |
7448 | we should be able to match up with it anyway. But fallbacks | |
7449 | using the minimal symbol, for instance to find a method | |
7450 | implemented in a stripped copy of libstdc++, will not work. | |
7451 | If we do not have debug info for the definition, we will have to | |
7452 | match them up some other way. | |
7453 | ||
7454 | When we do name matching there is a related problem with function | |
7455 | templates; two instantiated function templates are allowed to | |
7456 | differ only by their return types, which we do not add here. */ | |
7457 | ||
7458 | if (cu->language == language_cplus && strchr (name, '<') == NULL) | |
7459 | { | |
7460 | struct attribute *attr; | |
7461 | struct die_info *child; | |
7462 | int first = 1; | |
7463 | ||
7464 | die->building_fullname = 1; | |
7465 | ||
7466 | for (child = die->child; child != NULL; child = child->sibling) | |
7467 | { | |
7468 | struct type *type; | |
12df843f | 7469 | LONGEST value; |
98bfdba5 PA |
7470 | gdb_byte *bytes; |
7471 | struct dwarf2_locexpr_baton *baton; | |
7472 | struct value *v; | |
7473 | ||
7474 | if (child->tag != DW_TAG_template_type_param | |
7475 | && child->tag != DW_TAG_template_value_param) | |
7476 | continue; | |
7477 | ||
7478 | if (first) | |
7479 | { | |
7480 | fputs_unfiltered ("<", buf); | |
7481 | first = 0; | |
7482 | } | |
7483 | else | |
7484 | fputs_unfiltered (", ", buf); | |
7485 | ||
7486 | attr = dwarf2_attr (child, DW_AT_type, cu); | |
7487 | if (attr == NULL) | |
7488 | { | |
7489 | complaint (&symfile_complaints, | |
7490 | _("template parameter missing DW_AT_type")); | |
7491 | fputs_unfiltered ("UNKNOWN_TYPE", buf); | |
7492 | continue; | |
7493 | } | |
7494 | type = die_type (child, cu); | |
7495 | ||
7496 | if (child->tag == DW_TAG_template_type_param) | |
7497 | { | |
79d43c61 | 7498 | c_print_type (type, "", buf, -1, 0, &type_print_raw_options); |
98bfdba5 PA |
7499 | continue; |
7500 | } | |
7501 | ||
7502 | attr = dwarf2_attr (child, DW_AT_const_value, cu); | |
7503 | if (attr == NULL) | |
7504 | { | |
7505 | complaint (&symfile_complaints, | |
3e43a32a MS |
7506 | _("template parameter missing " |
7507 | "DW_AT_const_value")); | |
98bfdba5 PA |
7508 | fputs_unfiltered ("UNKNOWN_VALUE", buf); |
7509 | continue; | |
7510 | } | |
7511 | ||
7512 | dwarf2_const_value_attr (attr, type, name, | |
7513 | &cu->comp_unit_obstack, cu, | |
7514 | &value, &bytes, &baton); | |
7515 | ||
7516 | if (TYPE_NOSIGN (type)) | |
7517 | /* GDB prints characters as NUMBER 'CHAR'. If that's | |
7518 | changed, this can use value_print instead. */ | |
7519 | c_printchar (value, type, buf); | |
7520 | else | |
7521 | { | |
7522 | struct value_print_options opts; | |
7523 | ||
7524 | if (baton != NULL) | |
7525 | v = dwarf2_evaluate_loc_desc (type, NULL, | |
7526 | baton->data, | |
7527 | baton->size, | |
7528 | baton->per_cu); | |
7529 | else if (bytes != NULL) | |
7530 | { | |
7531 | v = allocate_value (type); | |
7532 | memcpy (value_contents_writeable (v), bytes, | |
7533 | TYPE_LENGTH (type)); | |
7534 | } | |
7535 | else | |
7536 | v = value_from_longest (type, value); | |
7537 | ||
3e43a32a MS |
7538 | /* Specify decimal so that we do not depend on |
7539 | the radix. */ | |
98bfdba5 PA |
7540 | get_formatted_print_options (&opts, 'd'); |
7541 | opts.raw = 1; | |
7542 | value_print (v, buf, &opts); | |
7543 | release_value (v); | |
7544 | value_free (v); | |
7545 | } | |
7546 | } | |
7547 | ||
7548 | die->building_fullname = 0; | |
7549 | ||
7550 | if (!first) | |
7551 | { | |
7552 | /* Close the argument list, with a space if necessary | |
7553 | (nested templates). */ | |
7554 | char last_char = '\0'; | |
7555 | ui_file_put (buf, do_ui_file_peek_last, &last_char); | |
7556 | if (last_char == '>') | |
7557 | fputs_unfiltered (" >", buf); | |
7558 | else | |
7559 | fputs_unfiltered (">", buf); | |
7560 | } | |
7561 | } | |
7562 | ||
94af9270 KS |
7563 | /* For Java and C++ methods, append formal parameter type |
7564 | information, if PHYSNAME. */ | |
6e70227d | 7565 | |
94af9270 KS |
7566 | if (physname && die->tag == DW_TAG_subprogram |
7567 | && (cu->language == language_cplus | |
7568 | || cu->language == language_java)) | |
7569 | { | |
7570 | struct type *type = read_type_die (die, cu); | |
7571 | ||
79d43c61 TT |
7572 | c_type_print_args (type, buf, 1, cu->language, |
7573 | &type_print_raw_options); | |
94af9270 KS |
7574 | |
7575 | if (cu->language == language_java) | |
7576 | { | |
7577 | /* For java, we must append the return type to method | |
0963b4bd | 7578 | names. */ |
94af9270 KS |
7579 | if (die->tag == DW_TAG_subprogram) |
7580 | java_print_type (TYPE_TARGET_TYPE (type), "", buf, | |
79d43c61 | 7581 | 0, 0, &type_print_raw_options); |
94af9270 KS |
7582 | } |
7583 | else if (cu->language == language_cplus) | |
7584 | { | |
60430eff DJ |
7585 | /* Assume that an artificial first parameter is |
7586 | "this", but do not crash if it is not. RealView | |
7587 | marks unnamed (and thus unused) parameters as | |
7588 | artificial; there is no way to differentiate | |
7589 | the two cases. */ | |
94af9270 KS |
7590 | if (TYPE_NFIELDS (type) > 0 |
7591 | && TYPE_FIELD_ARTIFICIAL (type, 0) | |
60430eff | 7592 | && TYPE_CODE (TYPE_FIELD_TYPE (type, 0)) == TYPE_CODE_PTR |
3e43a32a MS |
7593 | && TYPE_CONST (TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, |
7594 | 0)))) | |
94af9270 KS |
7595 | fputs_unfiltered (" const", buf); |
7596 | } | |
7597 | } | |
7598 | ||
bb5ed363 | 7599 | name = ui_file_obsavestring (buf, &objfile->objfile_obstack, |
94af9270 KS |
7600 | &length); |
7601 | ui_file_delete (buf); | |
7602 | ||
7603 | if (cu->language == language_cplus) | |
7604 | { | |
15d034d0 | 7605 | const char *cname |
94af9270 | 7606 | = dwarf2_canonicalize_name (name, cu, |
bb5ed363 | 7607 | &objfile->objfile_obstack); |
9a619af0 | 7608 | |
94af9270 KS |
7609 | if (cname != NULL) |
7610 | name = cname; | |
7611 | } | |
7612 | } | |
7613 | } | |
7614 | ||
7615 | return name; | |
7616 | } | |
7617 | ||
0114d602 DJ |
7618 | /* Return the fully qualified name of DIE, based on its DW_AT_name. |
7619 | If scope qualifiers are appropriate they will be added. The result | |
7620 | will be allocated on the objfile_obstack, or NULL if the DIE does | |
94af9270 KS |
7621 | not have a name. NAME may either be from a previous call to |
7622 | dwarf2_name or NULL. | |
7623 | ||
0963b4bd | 7624 | The output string will be canonicalized (if C++/Java). */ |
0114d602 DJ |
7625 | |
7626 | static const char * | |
15d034d0 | 7627 | dwarf2_full_name (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
0114d602 | 7628 | { |
94af9270 KS |
7629 | return dwarf2_compute_name (name, die, cu, 0); |
7630 | } | |
0114d602 | 7631 | |
94af9270 KS |
7632 | /* Construct a physname for the given DIE in CU. NAME may either be |
7633 | from a previous call to dwarf2_name or NULL. The result will be | |
7634 | allocated on the objfile_objstack or NULL if the DIE does not have a | |
7635 | name. | |
0114d602 | 7636 | |
94af9270 | 7637 | The output string will be canonicalized (if C++/Java). */ |
0114d602 | 7638 | |
94af9270 | 7639 | static const char * |
15d034d0 | 7640 | dwarf2_physname (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
94af9270 | 7641 | { |
bb5ed363 | 7642 | struct objfile *objfile = cu->objfile; |
900e11f9 JK |
7643 | struct attribute *attr; |
7644 | const char *retval, *mangled = NULL, *canon = NULL; | |
7645 | struct cleanup *back_to; | |
7646 | int need_copy = 1; | |
7647 | ||
7648 | /* In this case dwarf2_compute_name is just a shortcut not building anything | |
7649 | on its own. */ | |
7650 | if (!die_needs_namespace (die, cu)) | |
7651 | return dwarf2_compute_name (name, die, cu, 1); | |
7652 | ||
7653 | back_to = make_cleanup (null_cleanup, NULL); | |
7654 | ||
7655 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
7656 | if (!attr) | |
7657 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
7658 | ||
7659 | /* DW_AT_linkage_name is missing in some cases - depend on what GDB | |
7660 | has computed. */ | |
7661 | if (attr && DW_STRING (attr)) | |
7662 | { | |
7663 | char *demangled; | |
7664 | ||
7665 | mangled = DW_STRING (attr); | |
7666 | ||
7667 | /* Use DMGL_RET_DROP for C++ template functions to suppress their return | |
7668 | type. It is easier for GDB users to search for such functions as | |
7669 | `name(params)' than `long name(params)'. In such case the minimal | |
7670 | symbol names do not match the full symbol names but for template | |
7671 | functions there is never a need to look up their definition from their | |
7672 | declaration so the only disadvantage remains the minimal symbol | |
7673 | variant `long name(params)' does not have the proper inferior type. | |
7674 | */ | |
7675 | ||
a766d390 DE |
7676 | if (cu->language == language_go) |
7677 | { | |
7678 | /* This is a lie, but we already lie to the caller new_symbol_full. | |
7679 | new_symbol_full assumes we return the mangled name. | |
7680 | This just undoes that lie until things are cleaned up. */ | |
7681 | demangled = NULL; | |
7682 | } | |
7683 | else | |
7684 | { | |
7685 | demangled = cplus_demangle (mangled, | |
7686 | (DMGL_PARAMS | DMGL_ANSI | |
7687 | | (cu->language == language_java | |
7688 | ? DMGL_JAVA | DMGL_RET_POSTFIX | |
7689 | : DMGL_RET_DROP))); | |
7690 | } | |
900e11f9 JK |
7691 | if (demangled) |
7692 | { | |
7693 | make_cleanup (xfree, demangled); | |
7694 | canon = demangled; | |
7695 | } | |
7696 | else | |
7697 | { | |
7698 | canon = mangled; | |
7699 | need_copy = 0; | |
7700 | } | |
7701 | } | |
7702 | ||
7703 | if (canon == NULL || check_physname) | |
7704 | { | |
7705 | const char *physname = dwarf2_compute_name (name, die, cu, 1); | |
7706 | ||
7707 | if (canon != NULL && strcmp (physname, canon) != 0) | |
7708 | { | |
7709 | /* It may not mean a bug in GDB. The compiler could also | |
7710 | compute DW_AT_linkage_name incorrectly. But in such case | |
7711 | GDB would need to be bug-to-bug compatible. */ | |
7712 | ||
7713 | complaint (&symfile_complaints, | |
7714 | _("Computed physname <%s> does not match demangled <%s> " | |
7715 | "(from linkage <%s>) - DIE at 0x%x [in module %s]"), | |
b64f50a1 | 7716 | physname, canon, mangled, die->offset.sect_off, objfile->name); |
900e11f9 JK |
7717 | |
7718 | /* Prefer DW_AT_linkage_name (in the CANON form) - when it | |
7719 | is available here - over computed PHYSNAME. It is safer | |
7720 | against both buggy GDB and buggy compilers. */ | |
7721 | ||
7722 | retval = canon; | |
7723 | } | |
7724 | else | |
7725 | { | |
7726 | retval = physname; | |
7727 | need_copy = 0; | |
7728 | } | |
7729 | } | |
7730 | else | |
7731 | retval = canon; | |
7732 | ||
7733 | if (need_copy) | |
10f0c4bb | 7734 | retval = obstack_copy0 (&objfile->objfile_obstack, retval, strlen (retval)); |
900e11f9 JK |
7735 | |
7736 | do_cleanups (back_to); | |
7737 | return retval; | |
0114d602 DJ |
7738 | } |
7739 | ||
27aa8d6a SW |
7740 | /* Read the import statement specified by the given die and record it. */ |
7741 | ||
7742 | static void | |
7743 | read_import_statement (struct die_info *die, struct dwarf2_cu *cu) | |
7744 | { | |
bb5ed363 | 7745 | struct objfile *objfile = cu->objfile; |
27aa8d6a | 7746 | struct attribute *import_attr; |
32019081 | 7747 | struct die_info *imported_die, *child_die; |
de4affc9 | 7748 | struct dwarf2_cu *imported_cu; |
27aa8d6a | 7749 | const char *imported_name; |
794684b6 | 7750 | const char *imported_name_prefix; |
13387711 SW |
7751 | const char *canonical_name; |
7752 | const char *import_alias; | |
7753 | const char *imported_declaration = NULL; | |
794684b6 | 7754 | const char *import_prefix; |
32019081 JK |
7755 | VEC (const_char_ptr) *excludes = NULL; |
7756 | struct cleanup *cleanups; | |
13387711 | 7757 | |
27aa8d6a SW |
7758 | import_attr = dwarf2_attr (die, DW_AT_import, cu); |
7759 | if (import_attr == NULL) | |
7760 | { | |
7761 | complaint (&symfile_complaints, _("Tag '%s' has no DW_AT_import"), | |
7762 | dwarf_tag_name (die->tag)); | |
7763 | return; | |
7764 | } | |
7765 | ||
de4affc9 CC |
7766 | imported_cu = cu; |
7767 | imported_die = follow_die_ref_or_sig (die, import_attr, &imported_cu); | |
7768 | imported_name = dwarf2_name (imported_die, imported_cu); | |
27aa8d6a SW |
7769 | if (imported_name == NULL) |
7770 | { | |
7771 | /* GCC bug: https://bugzilla.redhat.com/show_bug.cgi?id=506524 | |
7772 | ||
7773 | The import in the following code: | |
7774 | namespace A | |
7775 | { | |
7776 | typedef int B; | |
7777 | } | |
7778 | ||
7779 | int main () | |
7780 | { | |
7781 | using A::B; | |
7782 | B b; | |
7783 | return b; | |
7784 | } | |
7785 | ||
7786 | ... | |
7787 | <2><51>: Abbrev Number: 3 (DW_TAG_imported_declaration) | |
7788 | <52> DW_AT_decl_file : 1 | |
7789 | <53> DW_AT_decl_line : 6 | |
7790 | <54> DW_AT_import : <0x75> | |
7791 | <2><58>: Abbrev Number: 4 (DW_TAG_typedef) | |
7792 | <59> DW_AT_name : B | |
7793 | <5b> DW_AT_decl_file : 1 | |
7794 | <5c> DW_AT_decl_line : 2 | |
7795 | <5d> DW_AT_type : <0x6e> | |
7796 | ... | |
7797 | <1><75>: Abbrev Number: 7 (DW_TAG_base_type) | |
7798 | <76> DW_AT_byte_size : 4 | |
7799 | <77> DW_AT_encoding : 5 (signed) | |
7800 | ||
7801 | imports the wrong die ( 0x75 instead of 0x58 ). | |
7802 | This case will be ignored until the gcc bug is fixed. */ | |
7803 | return; | |
7804 | } | |
7805 | ||
82856980 SW |
7806 | /* Figure out the local name after import. */ |
7807 | import_alias = dwarf2_name (die, cu); | |
27aa8d6a | 7808 | |
794684b6 SW |
7809 | /* Figure out where the statement is being imported to. */ |
7810 | import_prefix = determine_prefix (die, cu); | |
7811 | ||
7812 | /* Figure out what the scope of the imported die is and prepend it | |
7813 | to the name of the imported die. */ | |
de4affc9 | 7814 | imported_name_prefix = determine_prefix (imported_die, imported_cu); |
794684b6 | 7815 | |
f55ee35c JK |
7816 | if (imported_die->tag != DW_TAG_namespace |
7817 | && imported_die->tag != DW_TAG_module) | |
794684b6 | 7818 | { |
13387711 SW |
7819 | imported_declaration = imported_name; |
7820 | canonical_name = imported_name_prefix; | |
794684b6 | 7821 | } |
13387711 | 7822 | else if (strlen (imported_name_prefix) > 0) |
12aaed36 TT |
7823 | canonical_name = obconcat (&objfile->objfile_obstack, |
7824 | imported_name_prefix, "::", imported_name, | |
7825 | (char *) NULL); | |
13387711 SW |
7826 | else |
7827 | canonical_name = imported_name; | |
794684b6 | 7828 | |
32019081 JK |
7829 | cleanups = make_cleanup (VEC_cleanup (const_char_ptr), &excludes); |
7830 | ||
7831 | if (die->tag == DW_TAG_imported_module && cu->language == language_fortran) | |
7832 | for (child_die = die->child; child_die && child_die->tag; | |
7833 | child_die = sibling_die (child_die)) | |
7834 | { | |
7835 | /* DWARF-4: A Fortran use statement with a “rename list” may be | |
7836 | represented by an imported module entry with an import attribute | |
7837 | referring to the module and owned entries corresponding to those | |
7838 | entities that are renamed as part of being imported. */ | |
7839 | ||
7840 | if (child_die->tag != DW_TAG_imported_declaration) | |
7841 | { | |
7842 | complaint (&symfile_complaints, | |
7843 | _("child DW_TAG_imported_declaration expected " | |
7844 | "- DIE at 0x%x [in module %s]"), | |
b64f50a1 | 7845 | child_die->offset.sect_off, objfile->name); |
32019081 JK |
7846 | continue; |
7847 | } | |
7848 | ||
7849 | import_attr = dwarf2_attr (child_die, DW_AT_import, cu); | |
7850 | if (import_attr == NULL) | |
7851 | { | |
7852 | complaint (&symfile_complaints, _("Tag '%s' has no DW_AT_import"), | |
7853 | dwarf_tag_name (child_die->tag)); | |
7854 | continue; | |
7855 | } | |
7856 | ||
7857 | imported_cu = cu; | |
7858 | imported_die = follow_die_ref_or_sig (child_die, import_attr, | |
7859 | &imported_cu); | |
7860 | imported_name = dwarf2_name (imported_die, imported_cu); | |
7861 | if (imported_name == NULL) | |
7862 | { | |
7863 | complaint (&symfile_complaints, | |
7864 | _("child DW_TAG_imported_declaration has unknown " | |
7865 | "imported name - DIE at 0x%x [in module %s]"), | |
b64f50a1 | 7866 | child_die->offset.sect_off, objfile->name); |
32019081 JK |
7867 | continue; |
7868 | } | |
7869 | ||
7870 | VEC_safe_push (const_char_ptr, excludes, imported_name); | |
7871 | ||
7872 | process_die (child_die, cu); | |
7873 | } | |
7874 | ||
c0cc3a76 SW |
7875 | cp_add_using_directive (import_prefix, |
7876 | canonical_name, | |
7877 | import_alias, | |
13387711 | 7878 | imported_declaration, |
32019081 | 7879 | excludes, |
12aaed36 | 7880 | 0, |
bb5ed363 | 7881 | &objfile->objfile_obstack); |
32019081 JK |
7882 | |
7883 | do_cleanups (cleanups); | |
27aa8d6a SW |
7884 | } |
7885 | ||
f4dc4d17 | 7886 | /* Cleanup function for handle_DW_AT_stmt_list. */ |
ae2de4f8 | 7887 | |
cb1df416 DJ |
7888 | static void |
7889 | free_cu_line_header (void *arg) | |
7890 | { | |
7891 | struct dwarf2_cu *cu = arg; | |
7892 | ||
7893 | free_line_header (cu->line_header); | |
7894 | cu->line_header = NULL; | |
7895 | } | |
7896 | ||
1b80a9fa JK |
7897 | /* Check for possibly missing DW_AT_comp_dir with relative .debug_line |
7898 | directory paths. GCC SVN r127613 (new option -fdebug-prefix-map) fixed | |
7899 | this, it was first present in GCC release 4.3.0. */ | |
7900 | ||
7901 | static int | |
7902 | producer_is_gcc_lt_4_3 (struct dwarf2_cu *cu) | |
7903 | { | |
7904 | if (!cu->checked_producer) | |
7905 | check_producer (cu); | |
7906 | ||
7907 | return cu->producer_is_gcc_lt_4_3; | |
7908 | } | |
7909 | ||
9291a0cd TT |
7910 | static void |
7911 | find_file_and_directory (struct die_info *die, struct dwarf2_cu *cu, | |
15d034d0 | 7912 | const char **name, const char **comp_dir) |
9291a0cd TT |
7913 | { |
7914 | struct attribute *attr; | |
7915 | ||
7916 | *name = NULL; | |
7917 | *comp_dir = NULL; | |
7918 | ||
7919 | /* Find the filename. Do not use dwarf2_name here, since the filename | |
7920 | is not a source language identifier. */ | |
7921 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
7922 | if (attr) | |
7923 | { | |
7924 | *name = DW_STRING (attr); | |
7925 | } | |
7926 | ||
7927 | attr = dwarf2_attr (die, DW_AT_comp_dir, cu); | |
7928 | if (attr) | |
7929 | *comp_dir = DW_STRING (attr); | |
1b80a9fa JK |
7930 | else if (producer_is_gcc_lt_4_3 (cu) && *name != NULL |
7931 | && IS_ABSOLUTE_PATH (*name)) | |
9291a0cd | 7932 | { |
15d034d0 TT |
7933 | char *d = ldirname (*name); |
7934 | ||
7935 | *comp_dir = d; | |
7936 | if (d != NULL) | |
7937 | make_cleanup (xfree, d); | |
9291a0cd TT |
7938 | } |
7939 | if (*comp_dir != NULL) | |
7940 | { | |
7941 | /* Irix 6.2 native cc prepends <machine>.: to the compilation | |
7942 | directory, get rid of it. */ | |
7943 | char *cp = strchr (*comp_dir, ':'); | |
7944 | ||
7945 | if (cp && cp != *comp_dir && cp[-1] == '.' && cp[1] == '/') | |
7946 | *comp_dir = cp + 1; | |
7947 | } | |
7948 | ||
7949 | if (*name == NULL) | |
7950 | *name = "<unknown>"; | |
7951 | } | |
7952 | ||
f4dc4d17 DE |
7953 | /* Handle DW_AT_stmt_list for a compilation unit. |
7954 | DIE is the DW_TAG_compile_unit die for CU. | |
f3f5162e DE |
7955 | COMP_DIR is the compilation directory. |
7956 | WANT_LINE_INFO is non-zero if the pc/line-number mapping is needed. */ | |
2ab95328 TT |
7957 | |
7958 | static void | |
7959 | handle_DW_AT_stmt_list (struct die_info *die, struct dwarf2_cu *cu, | |
f4dc4d17 | 7960 | const char *comp_dir) |
2ab95328 TT |
7961 | { |
7962 | struct attribute *attr; | |
2ab95328 | 7963 | |
f4dc4d17 DE |
7964 | gdb_assert (! cu->per_cu->is_debug_types); |
7965 | ||
2ab95328 TT |
7966 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
7967 | if (attr) | |
7968 | { | |
7969 | unsigned int line_offset = DW_UNSND (attr); | |
7970 | struct line_header *line_header | |
3019eac3 | 7971 | = dwarf_decode_line_header (line_offset, cu); |
2ab95328 TT |
7972 | |
7973 | if (line_header) | |
dee91e82 DE |
7974 | { |
7975 | cu->line_header = line_header; | |
7976 | make_cleanup (free_cu_line_header, cu); | |
f4dc4d17 | 7977 | dwarf_decode_lines (line_header, comp_dir, cu, NULL, 1); |
dee91e82 | 7978 | } |
2ab95328 TT |
7979 | } |
7980 | } | |
7981 | ||
95554aad | 7982 | /* Process DW_TAG_compile_unit or DW_TAG_partial_unit. */ |
ae2de4f8 | 7983 | |
c906108c | 7984 | static void |
e7c27a73 | 7985 | read_file_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 7986 | { |
dee91e82 | 7987 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
debd256d | 7988 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
2acceee2 | 7989 | CORE_ADDR lowpc = ((CORE_ADDR) -1); |
c906108c SS |
7990 | CORE_ADDR highpc = ((CORE_ADDR) 0); |
7991 | struct attribute *attr; | |
15d034d0 TT |
7992 | const char *name = NULL; |
7993 | const char *comp_dir = NULL; | |
c906108c SS |
7994 | struct die_info *child_die; |
7995 | bfd *abfd = objfile->obfd; | |
e142c38c | 7996 | CORE_ADDR baseaddr; |
6e70227d | 7997 | |
e142c38c | 7998 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c | 7999 | |
fae299cd | 8000 | get_scope_pc_bounds (die, &lowpc, &highpc, cu); |
c906108c SS |
8001 | |
8002 | /* If we didn't find a lowpc, set it to highpc to avoid complaints | |
8003 | from finish_block. */ | |
2acceee2 | 8004 | if (lowpc == ((CORE_ADDR) -1)) |
c906108c SS |
8005 | lowpc = highpc; |
8006 | lowpc += baseaddr; | |
8007 | highpc += baseaddr; | |
8008 | ||
9291a0cd | 8009 | find_file_and_directory (die, cu, &name, &comp_dir); |
e1024ff1 | 8010 | |
95554aad | 8011 | prepare_one_comp_unit (cu, die, cu->language); |
303b6f5d | 8012 | |
f4b8a18d KW |
8013 | /* The XLCL doesn't generate DW_LANG_OpenCL because this attribute is not |
8014 | standardised yet. As a workaround for the language detection we fall | |
8015 | back to the DW_AT_producer string. */ | |
8016 | if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL") != NULL) | |
8017 | cu->language = language_opencl; | |
8018 | ||
3019eac3 DE |
8019 | /* Similar hack for Go. */ |
8020 | if (cu->producer && strstr (cu->producer, "GNU Go ") != NULL) | |
8021 | set_cu_language (DW_LANG_Go, cu); | |
8022 | ||
f4dc4d17 | 8023 | dwarf2_start_symtab (cu, name, comp_dir, lowpc); |
3019eac3 DE |
8024 | |
8025 | /* Decode line number information if present. We do this before | |
8026 | processing child DIEs, so that the line header table is available | |
8027 | for DW_AT_decl_file. */ | |
f4dc4d17 | 8028 | handle_DW_AT_stmt_list (die, cu, comp_dir); |
3019eac3 DE |
8029 | |
8030 | /* Process all dies in compilation unit. */ | |
8031 | if (die->child != NULL) | |
8032 | { | |
8033 | child_die = die->child; | |
8034 | while (child_die && child_die->tag) | |
8035 | { | |
8036 | process_die (child_die, cu); | |
8037 | child_die = sibling_die (child_die); | |
8038 | } | |
8039 | } | |
8040 | ||
8041 | /* Decode macro information, if present. Dwarf 2 macro information | |
8042 | refers to information in the line number info statement program | |
8043 | header, so we can only read it if we've read the header | |
8044 | successfully. */ | |
8045 | attr = dwarf2_attr (die, DW_AT_GNU_macros, cu); | |
8046 | if (attr && cu->line_header) | |
8047 | { | |
8048 | if (dwarf2_attr (die, DW_AT_macro_info, cu)) | |
8049 | complaint (&symfile_complaints, | |
8050 | _("CU refers to both DW_AT_GNU_macros and DW_AT_macro_info")); | |
8051 | ||
09262596 | 8052 | dwarf_decode_macros (cu, DW_UNSND (attr), comp_dir, 1); |
3019eac3 DE |
8053 | } |
8054 | else | |
8055 | { | |
8056 | attr = dwarf2_attr (die, DW_AT_macro_info, cu); | |
8057 | if (attr && cu->line_header) | |
8058 | { | |
8059 | unsigned int macro_offset = DW_UNSND (attr); | |
8060 | ||
09262596 | 8061 | dwarf_decode_macros (cu, macro_offset, comp_dir, 0); |
3019eac3 DE |
8062 | } |
8063 | } | |
8064 | ||
8065 | do_cleanups (back_to); | |
8066 | } | |
8067 | ||
f4dc4d17 DE |
8068 | /* TU version of handle_DW_AT_stmt_list for read_type_unit_scope. |
8069 | Create the set of symtabs used by this TU, or if this TU is sharing | |
8070 | symtabs with another TU and the symtabs have already been created | |
8071 | then restore those symtabs in the line header. | |
8072 | We don't need the pc/line-number mapping for type units. */ | |
3019eac3 DE |
8073 | |
8074 | static void | |
f4dc4d17 | 8075 | setup_type_unit_groups (struct die_info *die, struct dwarf2_cu *cu) |
3019eac3 | 8076 | { |
f4dc4d17 DE |
8077 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8078 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; | |
8079 | struct type_unit_group *tu_group; | |
8080 | int first_time; | |
8081 | struct line_header *lh; | |
3019eac3 | 8082 | struct attribute *attr; |
f4dc4d17 | 8083 | unsigned int i, line_offset; |
3019eac3 | 8084 | |
f4dc4d17 | 8085 | gdb_assert (per_cu->is_debug_types); |
3019eac3 | 8086 | |
f4dc4d17 | 8087 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
3019eac3 | 8088 | |
f4dc4d17 DE |
8089 | /* If we're using .gdb_index (includes -readnow) then |
8090 | per_cu->s.type_unit_group may not have been set up yet. */ | |
796a7ff8 DE |
8091 | if (per_cu->type_unit_group == NULL) |
8092 | per_cu->type_unit_group = get_type_unit_group (cu, attr); | |
8093 | tu_group = per_cu->type_unit_group; | |
f4dc4d17 DE |
8094 | |
8095 | /* If we've already processed this stmt_list there's no real need to | |
8096 | do it again, we could fake it and just recreate the part we need | |
8097 | (file name,index -> symtab mapping). If data shows this optimization | |
8098 | is useful we can do it then. */ | |
8099 | first_time = tu_group->primary_symtab == NULL; | |
8100 | ||
8101 | /* We have to handle the case of both a missing DW_AT_stmt_list or bad | |
8102 | debug info. */ | |
8103 | lh = NULL; | |
8104 | if (attr != NULL) | |
3019eac3 | 8105 | { |
f4dc4d17 DE |
8106 | line_offset = DW_UNSND (attr); |
8107 | lh = dwarf_decode_line_header (line_offset, cu); | |
8108 | } | |
8109 | if (lh == NULL) | |
8110 | { | |
8111 | if (first_time) | |
8112 | dwarf2_start_symtab (cu, "", NULL, 0); | |
8113 | else | |
8114 | { | |
8115 | gdb_assert (tu_group->symtabs == NULL); | |
8116 | restart_symtab (0); | |
8117 | } | |
8118 | /* Note: The primary symtab will get allocated at the end. */ | |
8119 | return; | |
3019eac3 DE |
8120 | } |
8121 | ||
f4dc4d17 DE |
8122 | cu->line_header = lh; |
8123 | make_cleanup (free_cu_line_header, cu); | |
3019eac3 | 8124 | |
f4dc4d17 DE |
8125 | if (first_time) |
8126 | { | |
8127 | dwarf2_start_symtab (cu, "", NULL, 0); | |
3019eac3 | 8128 | |
f4dc4d17 DE |
8129 | tu_group->num_symtabs = lh->num_file_names; |
8130 | tu_group->symtabs = XNEWVEC (struct symtab *, lh->num_file_names); | |
3019eac3 | 8131 | |
f4dc4d17 DE |
8132 | for (i = 0; i < lh->num_file_names; ++i) |
8133 | { | |
8134 | char *dir = NULL; | |
8135 | struct file_entry *fe = &lh->file_names[i]; | |
3019eac3 | 8136 | |
f4dc4d17 DE |
8137 | if (fe->dir_index) |
8138 | dir = lh->include_dirs[fe->dir_index - 1]; | |
8139 | dwarf2_start_subfile (fe->name, dir, NULL); | |
3019eac3 | 8140 | |
f4dc4d17 DE |
8141 | /* Note: We don't have to watch for the main subfile here, type units |
8142 | don't have DW_AT_name. */ | |
3019eac3 | 8143 | |
f4dc4d17 DE |
8144 | if (current_subfile->symtab == NULL) |
8145 | { | |
8146 | /* NOTE: start_subfile will recognize when it's been passed | |
8147 | a file it has already seen. So we can't assume there's a | |
8148 | simple mapping from lh->file_names to subfiles, | |
8149 | lh->file_names may contain dups. */ | |
8150 | current_subfile->symtab = allocate_symtab (current_subfile->name, | |
8151 | objfile); | |
8152 | } | |
8153 | ||
8154 | fe->symtab = current_subfile->symtab; | |
8155 | tu_group->symtabs[i] = fe->symtab; | |
8156 | } | |
8157 | } | |
8158 | else | |
3019eac3 | 8159 | { |
f4dc4d17 DE |
8160 | restart_symtab (0); |
8161 | ||
8162 | for (i = 0; i < lh->num_file_names; ++i) | |
8163 | { | |
8164 | struct file_entry *fe = &lh->file_names[i]; | |
8165 | ||
8166 | fe->symtab = tu_group->symtabs[i]; | |
8167 | } | |
3019eac3 DE |
8168 | } |
8169 | ||
f4dc4d17 DE |
8170 | /* The main symtab is allocated last. Type units don't have DW_AT_name |
8171 | so they don't have a "real" (so to speak) symtab anyway. | |
8172 | There is later code that will assign the main symtab to all symbols | |
8173 | that don't have one. We need to handle the case of a symbol with a | |
8174 | missing symtab (DW_AT_decl_file) anyway. */ | |
8175 | } | |
3019eac3 | 8176 | |
f4dc4d17 DE |
8177 | /* Process DW_TAG_type_unit. |
8178 | For TUs we want to skip the first top level sibling if it's not the | |
8179 | actual type being defined by this TU. In this case the first top | |
8180 | level sibling is there to provide context only. */ | |
3019eac3 | 8181 | |
f4dc4d17 DE |
8182 | static void |
8183 | read_type_unit_scope (struct die_info *die, struct dwarf2_cu *cu) | |
8184 | { | |
8185 | struct die_info *child_die; | |
3019eac3 | 8186 | |
f4dc4d17 DE |
8187 | prepare_one_comp_unit (cu, die, language_minimal); |
8188 | ||
8189 | /* Initialize (or reinitialize) the machinery for building symtabs. | |
8190 | We do this before processing child DIEs, so that the line header table | |
8191 | is available for DW_AT_decl_file. */ | |
8192 | setup_type_unit_groups (die, cu); | |
8193 | ||
8194 | if (die->child != NULL) | |
8195 | { | |
8196 | child_die = die->child; | |
8197 | while (child_die && child_die->tag) | |
8198 | { | |
8199 | process_die (child_die, cu); | |
8200 | child_die = sibling_die (child_die); | |
8201 | } | |
8202 | } | |
3019eac3 DE |
8203 | } |
8204 | \f | |
80626a55 DE |
8205 | /* DWO/DWP files. |
8206 | ||
8207 | http://gcc.gnu.org/wiki/DebugFission | |
8208 | http://gcc.gnu.org/wiki/DebugFissionDWP | |
8209 | ||
8210 | To simplify handling of both DWO files ("object" files with the DWARF info) | |
8211 | and DWP files (a file with the DWOs packaged up into one file), we treat | |
8212 | DWP files as having a collection of virtual DWO files. */ | |
3019eac3 DE |
8213 | |
8214 | static hashval_t | |
8215 | hash_dwo_file (const void *item) | |
8216 | { | |
8217 | const struct dwo_file *dwo_file = item; | |
8218 | ||
80626a55 | 8219 | return htab_hash_string (dwo_file->name); |
3019eac3 DE |
8220 | } |
8221 | ||
8222 | static int | |
8223 | eq_dwo_file (const void *item_lhs, const void *item_rhs) | |
8224 | { | |
8225 | const struct dwo_file *lhs = item_lhs; | |
8226 | const struct dwo_file *rhs = item_rhs; | |
8227 | ||
80626a55 | 8228 | return strcmp (lhs->name, rhs->name) == 0; |
3019eac3 DE |
8229 | } |
8230 | ||
8231 | /* Allocate a hash table for DWO files. */ | |
8232 | ||
8233 | static htab_t | |
8234 | allocate_dwo_file_hash_table (void) | |
8235 | { | |
8236 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
8237 | ||
8238 | return htab_create_alloc_ex (41, | |
8239 | hash_dwo_file, | |
8240 | eq_dwo_file, | |
8241 | NULL, | |
8242 | &objfile->objfile_obstack, | |
8243 | hashtab_obstack_allocate, | |
8244 | dummy_obstack_deallocate); | |
8245 | } | |
8246 | ||
80626a55 DE |
8247 | /* Lookup DWO file DWO_NAME. */ |
8248 | ||
8249 | static void ** | |
8250 | lookup_dwo_file_slot (const char *dwo_name) | |
8251 | { | |
8252 | struct dwo_file find_entry; | |
8253 | void **slot; | |
8254 | ||
8255 | if (dwarf2_per_objfile->dwo_files == NULL) | |
8256 | dwarf2_per_objfile->dwo_files = allocate_dwo_file_hash_table (); | |
8257 | ||
8258 | memset (&find_entry, 0, sizeof (find_entry)); | |
8259 | find_entry.name = dwo_name; | |
8260 | slot = htab_find_slot (dwarf2_per_objfile->dwo_files, &find_entry, INSERT); | |
8261 | ||
8262 | return slot; | |
8263 | } | |
8264 | ||
3019eac3 DE |
8265 | static hashval_t |
8266 | hash_dwo_unit (const void *item) | |
8267 | { | |
8268 | const struct dwo_unit *dwo_unit = item; | |
8269 | ||
8270 | /* This drops the top 32 bits of the id, but is ok for a hash. */ | |
8271 | return dwo_unit->signature; | |
8272 | } | |
8273 | ||
8274 | static int | |
8275 | eq_dwo_unit (const void *item_lhs, const void *item_rhs) | |
8276 | { | |
8277 | const struct dwo_unit *lhs = item_lhs; | |
8278 | const struct dwo_unit *rhs = item_rhs; | |
8279 | ||
8280 | /* The signature is assumed to be unique within the DWO file. | |
8281 | So while object file CU dwo_id's always have the value zero, | |
8282 | that's OK, assuming each object file DWO file has only one CU, | |
8283 | and that's the rule for now. */ | |
8284 | return lhs->signature == rhs->signature; | |
8285 | } | |
8286 | ||
8287 | /* Allocate a hash table for DWO CUs,TUs. | |
8288 | There is one of these tables for each of CUs,TUs for each DWO file. */ | |
8289 | ||
8290 | static htab_t | |
8291 | allocate_dwo_unit_table (struct objfile *objfile) | |
8292 | { | |
8293 | /* Start out with a pretty small number. | |
8294 | Generally DWO files contain only one CU and maybe some TUs. */ | |
8295 | return htab_create_alloc_ex (3, | |
8296 | hash_dwo_unit, | |
8297 | eq_dwo_unit, | |
8298 | NULL, | |
8299 | &objfile->objfile_obstack, | |
8300 | hashtab_obstack_allocate, | |
8301 | dummy_obstack_deallocate); | |
8302 | } | |
8303 | ||
80626a55 | 8304 | /* Structure used to pass data to create_dwo_debug_info_hash_table_reader. */ |
3019eac3 DE |
8305 | |
8306 | struct create_dwo_info_table_data | |
8307 | { | |
8308 | struct dwo_file *dwo_file; | |
8309 | htab_t cu_htab; | |
8310 | }; | |
8311 | ||
80626a55 | 8312 | /* die_reader_func for create_dwo_debug_info_hash_table. */ |
3019eac3 DE |
8313 | |
8314 | static void | |
80626a55 DE |
8315 | create_dwo_debug_info_hash_table_reader (const struct die_reader_specs *reader, |
8316 | gdb_byte *info_ptr, | |
8317 | struct die_info *comp_unit_die, | |
8318 | int has_children, | |
8319 | void *datap) | |
3019eac3 DE |
8320 | { |
8321 | struct dwarf2_cu *cu = reader->cu; | |
8322 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
8323 | sect_offset offset = cu->per_cu->offset; | |
8a0459fd | 8324 | struct dwarf2_section_info *section = cu->per_cu->section; |
3019eac3 DE |
8325 | struct create_dwo_info_table_data *data = datap; |
8326 | struct dwo_file *dwo_file = data->dwo_file; | |
8327 | htab_t cu_htab = data->cu_htab; | |
8328 | void **slot; | |
8329 | struct attribute *attr; | |
8330 | struct dwo_unit *dwo_unit; | |
8331 | ||
8332 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_id, cu); | |
8333 | if (attr == NULL) | |
8334 | { | |
8335 | error (_("Dwarf Error: debug entry at offset 0x%x is missing" | |
8336 | " its dwo_id [in module %s]"), | |
80626a55 | 8337 | offset.sect_off, dwo_file->name); |
3019eac3 DE |
8338 | return; |
8339 | } | |
8340 | ||
8341 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); | |
8342 | dwo_unit->dwo_file = dwo_file; | |
8343 | dwo_unit->signature = DW_UNSND (attr); | |
8a0459fd | 8344 | dwo_unit->section = section; |
3019eac3 DE |
8345 | dwo_unit->offset = offset; |
8346 | dwo_unit->length = cu->per_cu->length; | |
8347 | ||
8348 | slot = htab_find_slot (cu_htab, dwo_unit, INSERT); | |
8349 | gdb_assert (slot != NULL); | |
8350 | if (*slot != NULL) | |
8351 | { | |
8352 | const struct dwo_unit *dup_dwo_unit = *slot; | |
8353 | ||
8354 | complaint (&symfile_complaints, | |
8355 | _("debug entry at offset 0x%x is duplicate to the entry at" | |
8356 | " offset 0x%x, dwo_id 0x%s [in module %s]"), | |
8357 | offset.sect_off, dup_dwo_unit->offset.sect_off, | |
8358 | phex (dwo_unit->signature, sizeof (dwo_unit->signature)), | |
80626a55 | 8359 | dwo_file->name); |
3019eac3 DE |
8360 | } |
8361 | else | |
8362 | *slot = dwo_unit; | |
8363 | ||
09406207 | 8364 | if (dwarf2_read_debug) |
3019eac3 DE |
8365 | fprintf_unfiltered (gdb_stdlog, " offset 0x%x, dwo_id 0x%s\n", |
8366 | offset.sect_off, | |
8367 | phex (dwo_unit->signature, | |
8368 | sizeof (dwo_unit->signature))); | |
8369 | } | |
8370 | ||
80626a55 DE |
8371 | /* Create a hash table to map DWO IDs to their CU entry in |
8372 | .debug_info.dwo in DWO_FILE. | |
8373 | Note: This function processes DWO files only, not DWP files. */ | |
3019eac3 DE |
8374 | |
8375 | static htab_t | |
80626a55 | 8376 | create_dwo_debug_info_hash_table (struct dwo_file *dwo_file) |
3019eac3 DE |
8377 | { |
8378 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
8379 | struct dwarf2_section_info *section = &dwo_file->sections.info; | |
8380 | bfd *abfd; | |
8381 | htab_t cu_htab; | |
8382 | gdb_byte *info_ptr, *end_ptr; | |
8383 | struct create_dwo_info_table_data create_dwo_info_table_data; | |
8384 | ||
8385 | dwarf2_read_section (objfile, section); | |
8386 | info_ptr = section->buffer; | |
8387 | ||
8388 | if (info_ptr == NULL) | |
8389 | return NULL; | |
8390 | ||
8391 | /* We can't set abfd until now because the section may be empty or | |
8392 | not present, in which case section->asection will be NULL. */ | |
8393 | abfd = section->asection->owner; | |
8394 | ||
09406207 | 8395 | if (dwarf2_read_debug) |
3019eac3 DE |
8396 | fprintf_unfiltered (gdb_stdlog, "Reading .debug_info.dwo for %s:\n", |
8397 | bfd_get_filename (abfd)); | |
8398 | ||
8399 | cu_htab = allocate_dwo_unit_table (objfile); | |
8400 | ||
8401 | create_dwo_info_table_data.dwo_file = dwo_file; | |
8402 | create_dwo_info_table_data.cu_htab = cu_htab; | |
8403 | ||
8404 | end_ptr = info_ptr + section->size; | |
8405 | while (info_ptr < end_ptr) | |
8406 | { | |
8407 | struct dwarf2_per_cu_data per_cu; | |
8408 | ||
8409 | memset (&per_cu, 0, sizeof (per_cu)); | |
8410 | per_cu.objfile = objfile; | |
8411 | per_cu.is_debug_types = 0; | |
8412 | per_cu.offset.sect_off = info_ptr - section->buffer; | |
8a0459fd | 8413 | per_cu.section = section; |
3019eac3 DE |
8414 | |
8415 | init_cutu_and_read_dies_no_follow (&per_cu, | |
8416 | &dwo_file->sections.abbrev, | |
8417 | dwo_file, | |
80626a55 | 8418 | create_dwo_debug_info_hash_table_reader, |
3019eac3 DE |
8419 | &create_dwo_info_table_data); |
8420 | ||
8421 | info_ptr += per_cu.length; | |
8422 | } | |
8423 | ||
8424 | return cu_htab; | |
8425 | } | |
8426 | ||
80626a55 DE |
8427 | /* DWP file .debug_{cu,tu}_index section format: |
8428 | [ref: http://gcc.gnu.org/wiki/DebugFissionDWP] | |
8429 | ||
8430 | Both index sections have the same format, and serve to map a 64-bit | |
8431 | signature to a set of section numbers. Each section begins with a header, | |
8432 | followed by a hash table of 64-bit signatures, a parallel table of 32-bit | |
8433 | indexes, and a pool of 32-bit section numbers. The index sections will be | |
8434 | aligned at 8-byte boundaries in the file. | |
8435 | ||
8436 | The index section header contains two unsigned 32-bit values (using the | |
8437 | byte order of the application binary): | |
8438 | ||
8439 | N, the number of compilation units or type units in the index | |
8440 | M, the number of slots in the hash table | |
8441 | ||
8442 | (We assume that N and M will not exceed 2^32 - 1.) | |
8443 | ||
8444 | The size of the hash table, M, must be 2^k such that 2^k > 3*N/2. | |
8445 | ||
8446 | The hash table begins at offset 8 in the section, and consists of an array | |
8447 | of M 64-bit slots. Each slot contains a 64-bit signature (using the byte | |
8448 | order of the application binary). Unused slots in the hash table are 0. | |
8449 | (We rely on the extreme unlikeliness of a signature being exactly 0.) | |
8450 | ||
8451 | The parallel table begins immediately after the hash table | |
8452 | (at offset 8 + 8 * M from the beginning of the section), and consists of an | |
8453 | array of 32-bit indexes (using the byte order of the application binary), | |
8454 | corresponding 1-1 with slots in the hash table. Each entry in the parallel | |
8455 | table contains a 32-bit index into the pool of section numbers. For unused | |
8456 | hash table slots, the corresponding entry in the parallel table will be 0. | |
8457 | ||
8458 | Given a 64-bit compilation unit signature or a type signature S, an entry | |
8459 | in the hash table is located as follows: | |
8460 | ||
8461 | 1) Calculate a primary hash H = S & MASK(k), where MASK(k) is a mask with | |
8462 | the low-order k bits all set to 1. | |
8463 | ||
8464 | 2) Calculate a secondary hash H' = (((S >> 32) & MASK(k)) | 1). | |
8465 | ||
8466 | 3) If the hash table entry at index H matches the signature, use that | |
8467 | entry. If the hash table entry at index H is unused (all zeroes), | |
8468 | terminate the search: the signature is not present in the table. | |
8469 | ||
8470 | 4) Let H = (H + H') modulo M. Repeat at Step 3. | |
8471 | ||
8472 | Because M > N and H' and M are relatively prime, the search is guaranteed | |
8473 | to stop at an unused slot or find the match. | |
8474 | ||
8475 | The pool of section numbers begins immediately following the hash table | |
8476 | (at offset 8 + 12 * M from the beginning of the section). The pool of | |
8477 | section numbers consists of an array of 32-bit words (using the byte order | |
8478 | of the application binary). Each item in the array is indexed starting | |
8479 | from 0. The hash table entry provides the index of the first section | |
8480 | number in the set. Additional section numbers in the set follow, and the | |
8481 | set is terminated by a 0 entry (section number 0 is not used in ELF). | |
8482 | ||
8483 | In each set of section numbers, the .debug_info.dwo or .debug_types.dwo | |
8484 | section must be the first entry in the set, and the .debug_abbrev.dwo must | |
8485 | be the second entry. Other members of the set may follow in any order. */ | |
8486 | ||
8487 | /* Create a hash table to map DWO IDs to their CU/TU entry in | |
8488 | .debug_{info,types}.dwo in DWP_FILE. | |
8489 | Returns NULL if there isn't one. | |
8490 | Note: This function processes DWP files only, not DWO files. */ | |
8491 | ||
8492 | static struct dwp_hash_table * | |
8493 | create_dwp_hash_table (struct dwp_file *dwp_file, int is_debug_types) | |
8494 | { | |
8495 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
8496 | bfd *dbfd = dwp_file->dbfd; | |
8497 | char *index_ptr, *index_end; | |
8498 | struct dwarf2_section_info *index; | |
8499 | uint32_t version, nr_units, nr_slots; | |
8500 | struct dwp_hash_table *htab; | |
8501 | ||
8502 | if (is_debug_types) | |
8503 | index = &dwp_file->sections.tu_index; | |
8504 | else | |
8505 | index = &dwp_file->sections.cu_index; | |
8506 | ||
8507 | if (dwarf2_section_empty_p (index)) | |
8508 | return NULL; | |
8509 | dwarf2_read_section (objfile, index); | |
8510 | ||
8511 | index_ptr = index->buffer; | |
8512 | index_end = index_ptr + index->size; | |
8513 | ||
8514 | version = read_4_bytes (dbfd, index_ptr); | |
8515 | index_ptr += 8; /* Skip the unused word. */ | |
8516 | nr_units = read_4_bytes (dbfd, index_ptr); | |
8517 | index_ptr += 4; | |
8518 | nr_slots = read_4_bytes (dbfd, index_ptr); | |
8519 | index_ptr += 4; | |
8520 | ||
8521 | if (version != 1) | |
8522 | { | |
8523 | error (_("Dwarf Error: unsupported DWP file version (%u)" | |
8524 | " [in module %s]"), | |
8525 | version, dwp_file->name); | |
8526 | } | |
8527 | if (nr_slots != (nr_slots & -nr_slots)) | |
8528 | { | |
8529 | error (_("Dwarf Error: number of slots in DWP hash table (%u)" | |
8530 | " is not power of 2 [in module %s]"), | |
8531 | nr_slots, dwp_file->name); | |
8532 | } | |
8533 | ||
8534 | htab = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwp_hash_table); | |
8535 | htab->nr_units = nr_units; | |
8536 | htab->nr_slots = nr_slots; | |
8537 | htab->hash_table = index_ptr; | |
8538 | htab->unit_table = htab->hash_table + sizeof (uint64_t) * nr_slots; | |
8539 | htab->section_pool = htab->unit_table + sizeof (uint32_t) * nr_slots; | |
8540 | ||
8541 | return htab; | |
8542 | } | |
8543 | ||
8544 | /* Update SECTIONS with the data from SECTP. | |
8545 | ||
8546 | This function is like the other "locate" section routines that are | |
8547 | passed to bfd_map_over_sections, but in this context the sections to | |
8548 | read comes from the DWP hash table, not the full ELF section table. | |
8549 | ||
8550 | The result is non-zero for success, or zero if an error was found. */ | |
8551 | ||
8552 | static int | |
8553 | locate_virtual_dwo_sections (asection *sectp, | |
8554 | struct virtual_dwo_sections *sections) | |
8555 | { | |
8556 | const struct dwop_section_names *names = &dwop_section_names; | |
8557 | ||
8558 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
8559 | { | |
8560 | /* There can be only one. */ | |
8561 | if (sections->abbrev.asection != NULL) | |
8562 | return 0; | |
8563 | sections->abbrev.asection = sectp; | |
8564 | sections->abbrev.size = bfd_get_section_size (sectp); | |
8565 | } | |
8566 | else if (section_is_p (sectp->name, &names->info_dwo) | |
8567 | || section_is_p (sectp->name, &names->types_dwo)) | |
8568 | { | |
8569 | /* There can be only one. */ | |
8570 | if (sections->info_or_types.asection != NULL) | |
8571 | return 0; | |
8572 | sections->info_or_types.asection = sectp; | |
8573 | sections->info_or_types.size = bfd_get_section_size (sectp); | |
8574 | } | |
8575 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
8576 | { | |
8577 | /* There can be only one. */ | |
8578 | if (sections->line.asection != NULL) | |
8579 | return 0; | |
8580 | sections->line.asection = sectp; | |
8581 | sections->line.size = bfd_get_section_size (sectp); | |
8582 | } | |
8583 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
8584 | { | |
8585 | /* There can be only one. */ | |
8586 | if (sections->loc.asection != NULL) | |
8587 | return 0; | |
8588 | sections->loc.asection = sectp; | |
8589 | sections->loc.size = bfd_get_section_size (sectp); | |
8590 | } | |
8591 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
8592 | { | |
8593 | /* There can be only one. */ | |
8594 | if (sections->macinfo.asection != NULL) | |
8595 | return 0; | |
8596 | sections->macinfo.asection = sectp; | |
8597 | sections->macinfo.size = bfd_get_section_size (sectp); | |
8598 | } | |
8599 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
8600 | { | |
8601 | /* There can be only one. */ | |
8602 | if (sections->macro.asection != NULL) | |
8603 | return 0; | |
8604 | sections->macro.asection = sectp; | |
8605 | sections->macro.size = bfd_get_section_size (sectp); | |
8606 | } | |
8607 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
8608 | { | |
8609 | /* There can be only one. */ | |
8610 | if (sections->str_offsets.asection != NULL) | |
8611 | return 0; | |
8612 | sections->str_offsets.asection = sectp; | |
8613 | sections->str_offsets.size = bfd_get_section_size (sectp); | |
8614 | } | |
8615 | else | |
8616 | { | |
8617 | /* No other kind of section is valid. */ | |
8618 | return 0; | |
8619 | } | |
8620 | ||
8621 | return 1; | |
8622 | } | |
8623 | ||
8624 | /* Create a dwo_unit object for the DWO with signature SIGNATURE. | |
8625 | HTAB is the hash table from the DWP file. | |
8626 | SECTION_INDEX is the index of the DWO in HTAB. */ | |
8627 | ||
8628 | static struct dwo_unit * | |
8629 | create_dwo_in_dwp (struct dwp_file *dwp_file, | |
8630 | const struct dwp_hash_table *htab, | |
8631 | uint32_t section_index, | |
8632 | ULONGEST signature, int is_debug_types) | |
8633 | { | |
8634 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
8635 | bfd *dbfd = dwp_file->dbfd; | |
8636 | const char *kind = is_debug_types ? "TU" : "CU"; | |
8637 | struct dwo_file *dwo_file; | |
8638 | struct dwo_unit *dwo_unit; | |
8639 | struct virtual_dwo_sections sections; | |
8640 | void **dwo_file_slot; | |
8641 | char *virtual_dwo_name; | |
8642 | struct dwarf2_section_info *cutu; | |
8643 | struct cleanup *cleanups; | |
8644 | int i; | |
8645 | ||
8646 | if (dwarf2_read_debug) | |
8647 | { | |
8648 | fprintf_unfiltered (gdb_stdlog, "Reading %s %u/0x%s in DWP file: %s\n", | |
8649 | kind, | |
8650 | section_index, phex (signature, sizeof (signature)), | |
8651 | dwp_file->name); | |
8652 | } | |
8653 | ||
8654 | /* Fetch the sections of this DWO. | |
8655 | Put a limit on the number of sections we look for so that bad data | |
8656 | doesn't cause us to loop forever. */ | |
8657 | ||
8658 | #define MAX_NR_DWO_SECTIONS \ | |
8659 | (1 /* .debug_info or .debug_types */ \ | |
8660 | + 1 /* .debug_abbrev */ \ | |
8661 | + 1 /* .debug_line */ \ | |
8662 | + 1 /* .debug_loc */ \ | |
8663 | + 1 /* .debug_str_offsets */ \ | |
8664 | + 1 /* .debug_macro */ \ | |
8665 | + 1 /* .debug_macinfo */ \ | |
8666 | + 1 /* trailing zero */) | |
8667 | ||
8668 | memset (§ions, 0, sizeof (sections)); | |
8669 | cleanups = make_cleanup (null_cleanup, 0); | |
8670 | ||
8671 | for (i = 0; i < MAX_NR_DWO_SECTIONS; ++i) | |
8672 | { | |
8673 | asection *sectp; | |
8674 | uint32_t section_nr = | |
8675 | read_4_bytes (dbfd, | |
8676 | htab->section_pool | |
8677 | + (section_index + i) * sizeof (uint32_t)); | |
8678 | ||
8679 | if (section_nr == 0) | |
8680 | break; | |
8681 | if (section_nr >= dwp_file->num_sections) | |
8682 | { | |
8683 | error (_("Dwarf Error: bad DWP hash table, section number too large" | |
8684 | " [in module %s]"), | |
8685 | dwp_file->name); | |
8686 | } | |
8687 | ||
8688 | sectp = dwp_file->elf_sections[section_nr]; | |
8689 | if (! locate_virtual_dwo_sections (sectp, §ions)) | |
8690 | { | |
8691 | error (_("Dwarf Error: bad DWP hash table, invalid section found" | |
8692 | " [in module %s]"), | |
8693 | dwp_file->name); | |
8694 | } | |
8695 | } | |
8696 | ||
8697 | if (i < 2 | |
8698 | || sections.info_or_types.asection == NULL | |
8699 | || sections.abbrev.asection == NULL) | |
8700 | { | |
8701 | error (_("Dwarf Error: bad DWP hash table, missing DWO sections" | |
8702 | " [in module %s]"), | |
8703 | dwp_file->name); | |
8704 | } | |
8705 | if (i == MAX_NR_DWO_SECTIONS) | |
8706 | { | |
8707 | error (_("Dwarf Error: bad DWP hash table, too many DWO sections" | |
8708 | " [in module %s]"), | |
8709 | dwp_file->name); | |
8710 | } | |
8711 | ||
8712 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
8713 | have dwo_unit "live" in that. At least for now. | |
8714 | ||
8715 | The DWP file can be made up of a random collection of CUs and TUs. | |
c766f7ec DE |
8716 | However, for each CU + set of TUs that came from the same original DWO |
8717 | file, we want to combine them back into a virtual DWO file to save space | |
80626a55 DE |
8718 | (fewer struct dwo_file objects to allocated). Remember that for really |
8719 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ | |
8720 | ||
2792b94d PM |
8721 | virtual_dwo_name = |
8722 | xstrprintf ("virtual-dwo/%d-%d-%d-%d", | |
8723 | sections.abbrev.asection ? sections.abbrev.asection->id : 0, | |
8724 | sections.line.asection ? sections.line.asection->id : 0, | |
8725 | sections.loc.asection ? sections.loc.asection->id : 0, | |
8726 | (sections.str_offsets.asection | |
8727 | ? sections.str_offsets.asection->id | |
8728 | : 0)); | |
80626a55 DE |
8729 | make_cleanup (xfree, virtual_dwo_name); |
8730 | /* Can we use an existing virtual DWO file? */ | |
8731 | dwo_file_slot = lookup_dwo_file_slot (virtual_dwo_name); | |
8732 | /* Create one if necessary. */ | |
8733 | if (*dwo_file_slot == NULL) | |
8734 | { | |
8735 | if (dwarf2_read_debug) | |
8736 | { | |
8737 | fprintf_unfiltered (gdb_stdlog, "Creating virtual DWO: %s\n", | |
8738 | virtual_dwo_name); | |
8739 | } | |
8740 | dwo_file = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_file); | |
8741 | dwo_file->name = obstack_copy0 (&objfile->objfile_obstack, | |
8742 | virtual_dwo_name, | |
8743 | strlen (virtual_dwo_name)); | |
8744 | dwo_file->sections.abbrev = sections.abbrev; | |
8745 | dwo_file->sections.line = sections.line; | |
8746 | dwo_file->sections.loc = sections.loc; | |
8747 | dwo_file->sections.macinfo = sections.macinfo; | |
8748 | dwo_file->sections.macro = sections.macro; | |
8749 | dwo_file->sections.str_offsets = sections.str_offsets; | |
8750 | /* The "str" section is global to the entire DWP file. */ | |
8751 | dwo_file->sections.str = dwp_file->sections.str; | |
8752 | /* The info or types section is assigned later to dwo_unit, | |
8753 | there's no need to record it in dwo_file. | |
8754 | Also, we can't simply record type sections in dwo_file because | |
8755 | we record a pointer into the vector in dwo_unit. As we collect more | |
8756 | types we'll grow the vector and eventually have to reallocate space | |
8757 | for it, invalidating all the pointers into the current copy. */ | |
8758 | *dwo_file_slot = dwo_file; | |
8759 | } | |
8760 | else | |
8761 | { | |
8762 | if (dwarf2_read_debug) | |
8763 | { | |
8764 | fprintf_unfiltered (gdb_stdlog, "Using existing virtual DWO: %s\n", | |
8765 | virtual_dwo_name); | |
8766 | } | |
8767 | dwo_file = *dwo_file_slot; | |
8768 | } | |
8769 | do_cleanups (cleanups); | |
8770 | ||
8771 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); | |
8772 | dwo_unit->dwo_file = dwo_file; | |
8773 | dwo_unit->signature = signature; | |
8a0459fd DE |
8774 | dwo_unit->section = obstack_alloc (&objfile->objfile_obstack, |
8775 | sizeof (struct dwarf2_section_info)); | |
8776 | *dwo_unit->section = sections.info_or_types; | |
80626a55 DE |
8777 | /* offset, length, type_offset_in_tu are set later. */ |
8778 | ||
8779 | return dwo_unit; | |
8780 | } | |
8781 | ||
8782 | /* Lookup the DWO with SIGNATURE in DWP_FILE. */ | |
8783 | ||
8784 | static struct dwo_unit * | |
8785 | lookup_dwo_in_dwp (struct dwp_file *dwp_file, | |
8786 | const struct dwp_hash_table *htab, | |
8787 | ULONGEST signature, int is_debug_types) | |
8788 | { | |
8789 | bfd *dbfd = dwp_file->dbfd; | |
8790 | uint32_t mask = htab->nr_slots - 1; | |
8791 | uint32_t hash = signature & mask; | |
8792 | uint32_t hash2 = ((signature >> 32) & mask) | 1; | |
8793 | unsigned int i; | |
8794 | void **slot; | |
8795 | struct dwo_unit find_dwo_cu, *dwo_cu; | |
8796 | ||
8797 | memset (&find_dwo_cu, 0, sizeof (find_dwo_cu)); | |
8798 | find_dwo_cu.signature = signature; | |
8799 | slot = htab_find_slot (dwp_file->loaded_cutus, &find_dwo_cu, INSERT); | |
8800 | ||
8801 | if (*slot != NULL) | |
8802 | return *slot; | |
8803 | ||
8804 | /* Use a for loop so that we don't loop forever on bad debug info. */ | |
8805 | for (i = 0; i < htab->nr_slots; ++i) | |
8806 | { | |
8807 | ULONGEST signature_in_table; | |
8808 | ||
8809 | signature_in_table = | |
8810 | read_8_bytes (dbfd, htab->hash_table + hash * sizeof (uint64_t)); | |
8811 | if (signature_in_table == signature) | |
8812 | { | |
8813 | uint32_t section_index = | |
8814 | read_4_bytes (dbfd, htab->unit_table + hash * sizeof (uint32_t)); | |
8815 | ||
8816 | *slot = create_dwo_in_dwp (dwp_file, htab, section_index, | |
8817 | signature, is_debug_types); | |
8818 | return *slot; | |
8819 | } | |
8820 | if (signature_in_table == 0) | |
8821 | return NULL; | |
8822 | hash = (hash + hash2) & mask; | |
8823 | } | |
8824 | ||
8825 | error (_("Dwarf Error: bad DWP hash table, lookup didn't terminate" | |
8826 | " [in module %s]"), | |
8827 | dwp_file->name); | |
8828 | } | |
8829 | ||
8830 | /* Subroutine of open_dwop_file to simplify it. | |
3019eac3 DE |
8831 | Open the file specified by FILE_NAME and hand it off to BFD for |
8832 | preliminary analysis. Return a newly initialized bfd *, which | |
8833 | includes a canonicalized copy of FILE_NAME. | |
80626a55 | 8834 | If IS_DWP is TRUE, we're opening a DWP file, otherwise a DWO file. |
3019eac3 DE |
8835 | In case of trouble, return NULL. |
8836 | NOTE: This function is derived from symfile_bfd_open. */ | |
8837 | ||
8838 | static bfd * | |
80626a55 | 8839 | try_open_dwop_file (const char *file_name, int is_dwp) |
3019eac3 DE |
8840 | { |
8841 | bfd *sym_bfd; | |
80626a55 | 8842 | int desc, flags; |
3019eac3 | 8843 | char *absolute_name; |
3019eac3 | 8844 | |
80626a55 DE |
8845 | flags = OPF_TRY_CWD_FIRST; |
8846 | if (is_dwp) | |
8847 | flags |= OPF_SEARCH_IN_PATH; | |
8848 | desc = openp (debug_file_directory, flags, file_name, | |
3019eac3 DE |
8849 | O_RDONLY | O_BINARY, &absolute_name); |
8850 | if (desc < 0) | |
8851 | return NULL; | |
8852 | ||
bb397797 | 8853 | sym_bfd = gdb_bfd_open (absolute_name, gnutarget, desc); |
3019eac3 DE |
8854 | if (!sym_bfd) |
8855 | { | |
3019eac3 DE |
8856 | xfree (absolute_name); |
8857 | return NULL; | |
8858 | } | |
a4453b7e | 8859 | xfree (absolute_name); |
3019eac3 DE |
8860 | bfd_set_cacheable (sym_bfd, 1); |
8861 | ||
8862 | if (!bfd_check_format (sym_bfd, bfd_object)) | |
8863 | { | |
cbb099e8 | 8864 | gdb_bfd_unref (sym_bfd); /* This also closes desc. */ |
3019eac3 DE |
8865 | return NULL; |
8866 | } | |
8867 | ||
3019eac3 DE |
8868 | return sym_bfd; |
8869 | } | |
8870 | ||
80626a55 | 8871 | /* Try to open DWO/DWP file FILE_NAME. |
3019eac3 | 8872 | COMP_DIR is the DW_AT_comp_dir attribute. |
80626a55 | 8873 | If IS_DWP is TRUE, we're opening a DWP file, otherwise a DWO file. |
3019eac3 DE |
8874 | The result is the bfd handle of the file. |
8875 | If there is a problem finding or opening the file, return NULL. | |
8876 | Upon success, the canonicalized path of the file is stored in the bfd, | |
8877 | same as symfile_bfd_open. */ | |
8878 | ||
8879 | static bfd * | |
80626a55 | 8880 | open_dwop_file (const char *file_name, const char *comp_dir, int is_dwp) |
3019eac3 DE |
8881 | { |
8882 | bfd *abfd; | |
3019eac3 | 8883 | |
80626a55 DE |
8884 | if (IS_ABSOLUTE_PATH (file_name)) |
8885 | return try_open_dwop_file (file_name, is_dwp); | |
3019eac3 DE |
8886 | |
8887 | /* Before trying the search path, try DWO_NAME in COMP_DIR. */ | |
8888 | ||
8889 | if (comp_dir != NULL) | |
8890 | { | |
80626a55 | 8891 | char *path_to_try = concat (comp_dir, SLASH_STRING, file_name, NULL); |
3019eac3 DE |
8892 | |
8893 | /* NOTE: If comp_dir is a relative path, this will also try the | |
8894 | search path, which seems useful. */ | |
80626a55 | 8895 | abfd = try_open_dwop_file (path_to_try, is_dwp); |
3019eac3 DE |
8896 | xfree (path_to_try); |
8897 | if (abfd != NULL) | |
8898 | return abfd; | |
8899 | } | |
8900 | ||
8901 | /* That didn't work, try debug-file-directory, which, despite its name, | |
8902 | is a list of paths. */ | |
8903 | ||
8904 | if (*debug_file_directory == '\0') | |
8905 | return NULL; | |
8906 | ||
80626a55 | 8907 | return try_open_dwop_file (file_name, is_dwp); |
3019eac3 DE |
8908 | } |
8909 | ||
80626a55 DE |
8910 | /* This function is mapped across the sections and remembers the offset and |
8911 | size of each of the DWO debugging sections we are interested in. */ | |
8912 | ||
8913 | static void | |
8914 | dwarf2_locate_dwo_sections (bfd *abfd, asection *sectp, void *dwo_sections_ptr) | |
8915 | { | |
8916 | struct dwo_sections *dwo_sections = dwo_sections_ptr; | |
8917 | const struct dwop_section_names *names = &dwop_section_names; | |
8918 | ||
8919 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
8920 | { | |
8921 | dwo_sections->abbrev.asection = sectp; | |
8922 | dwo_sections->abbrev.size = bfd_get_section_size (sectp); | |
8923 | } | |
8924 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
8925 | { | |
8926 | dwo_sections->info.asection = sectp; | |
8927 | dwo_sections->info.size = bfd_get_section_size (sectp); | |
8928 | } | |
8929 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
8930 | { | |
8931 | dwo_sections->line.asection = sectp; | |
8932 | dwo_sections->line.size = bfd_get_section_size (sectp); | |
8933 | } | |
8934 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
8935 | { | |
8936 | dwo_sections->loc.asection = sectp; | |
8937 | dwo_sections->loc.size = bfd_get_section_size (sectp); | |
8938 | } | |
8939 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
8940 | { | |
8941 | dwo_sections->macinfo.asection = sectp; | |
8942 | dwo_sections->macinfo.size = bfd_get_section_size (sectp); | |
8943 | } | |
8944 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
8945 | { | |
8946 | dwo_sections->macro.asection = sectp; | |
8947 | dwo_sections->macro.size = bfd_get_section_size (sectp); | |
8948 | } | |
8949 | else if (section_is_p (sectp->name, &names->str_dwo)) | |
8950 | { | |
8951 | dwo_sections->str.asection = sectp; | |
8952 | dwo_sections->str.size = bfd_get_section_size (sectp); | |
8953 | } | |
8954 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
8955 | { | |
8956 | dwo_sections->str_offsets.asection = sectp; | |
8957 | dwo_sections->str_offsets.size = bfd_get_section_size (sectp); | |
8958 | } | |
8959 | else if (section_is_p (sectp->name, &names->types_dwo)) | |
8960 | { | |
8961 | struct dwarf2_section_info type_section; | |
8962 | ||
8963 | memset (&type_section, 0, sizeof (type_section)); | |
8964 | type_section.asection = sectp; | |
8965 | type_section.size = bfd_get_section_size (sectp); | |
8966 | VEC_safe_push (dwarf2_section_info_def, dwo_sections->types, | |
8967 | &type_section); | |
8968 | } | |
8969 | } | |
8970 | ||
8971 | /* Initialize the use of the DWO file specified by DWO_NAME. | |
8972 | The result is NULL if DWO_NAME can't be found. */ | |
3019eac3 DE |
8973 | |
8974 | static struct dwo_file * | |
80626a55 | 8975 | open_and_init_dwo_file (const char *dwo_name, const char *comp_dir) |
3019eac3 DE |
8976 | { |
8977 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
80626a55 DE |
8978 | struct dwo_file *dwo_file; |
8979 | bfd *dbfd; | |
3019eac3 DE |
8980 | struct cleanup *cleanups; |
8981 | ||
80626a55 DE |
8982 | dbfd = open_dwop_file (dwo_name, comp_dir, 0); |
8983 | if (dbfd == NULL) | |
8984 | { | |
8985 | if (dwarf2_read_debug) | |
8986 | fprintf_unfiltered (gdb_stdlog, "DWO file not found: %s\n", dwo_name); | |
8987 | return NULL; | |
8988 | } | |
8989 | dwo_file = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_file); | |
8990 | dwo_file->name = obstack_copy0 (&objfile->objfile_obstack, | |
8991 | dwo_name, strlen (dwo_name)); | |
8992 | dwo_file->dbfd = dbfd; | |
3019eac3 DE |
8993 | |
8994 | cleanups = make_cleanup (free_dwo_file_cleanup, dwo_file); | |
8995 | ||
80626a55 | 8996 | bfd_map_over_sections (dbfd, dwarf2_locate_dwo_sections, &dwo_file->sections); |
3019eac3 | 8997 | |
80626a55 | 8998 | dwo_file->cus = create_dwo_debug_info_hash_table (dwo_file); |
3019eac3 DE |
8999 | |
9000 | dwo_file->tus = create_debug_types_hash_table (dwo_file, | |
9001 | dwo_file->sections.types); | |
9002 | ||
9003 | discard_cleanups (cleanups); | |
9004 | ||
80626a55 DE |
9005 | if (dwarf2_read_debug) |
9006 | fprintf_unfiltered (gdb_stdlog, "DWO file found: %s\n", dwo_name); | |
9007 | ||
3019eac3 DE |
9008 | return dwo_file; |
9009 | } | |
9010 | ||
80626a55 DE |
9011 | /* This function is mapped across the sections and remembers the offset and |
9012 | size of each of the DWP debugging sections we are interested in. */ | |
3019eac3 | 9013 | |
80626a55 DE |
9014 | static void |
9015 | dwarf2_locate_dwp_sections (bfd *abfd, asection *sectp, void *dwp_file_ptr) | |
3019eac3 | 9016 | { |
80626a55 DE |
9017 | struct dwp_file *dwp_file = dwp_file_ptr; |
9018 | const struct dwop_section_names *names = &dwop_section_names; | |
9019 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
3019eac3 | 9020 | |
80626a55 DE |
9021 | /* Record the ELF section number for later lookup: this is what the |
9022 | .debug_cu_index,.debug_tu_index tables use. */ | |
9023 | gdb_assert (elf_section_nr < dwp_file->num_sections); | |
9024 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
3019eac3 | 9025 | |
80626a55 DE |
9026 | /* Look for specific sections that we need. */ |
9027 | if (section_is_p (sectp->name, &names->str_dwo)) | |
9028 | { | |
9029 | dwp_file->sections.str.asection = sectp; | |
9030 | dwp_file->sections.str.size = bfd_get_section_size (sectp); | |
9031 | } | |
9032 | else if (section_is_p (sectp->name, &names->cu_index)) | |
9033 | { | |
9034 | dwp_file->sections.cu_index.asection = sectp; | |
9035 | dwp_file->sections.cu_index.size = bfd_get_section_size (sectp); | |
9036 | } | |
9037 | else if (section_is_p (sectp->name, &names->tu_index)) | |
9038 | { | |
9039 | dwp_file->sections.tu_index.asection = sectp; | |
9040 | dwp_file->sections.tu_index.size = bfd_get_section_size (sectp); | |
9041 | } | |
9042 | } | |
3019eac3 | 9043 | |
80626a55 | 9044 | /* Hash function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 9045 | |
80626a55 DE |
9046 | static hashval_t |
9047 | hash_dwp_loaded_cutus (const void *item) | |
9048 | { | |
9049 | const struct dwo_unit *dwo_unit = item; | |
3019eac3 | 9050 | |
80626a55 DE |
9051 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
9052 | return dwo_unit->signature; | |
3019eac3 DE |
9053 | } |
9054 | ||
80626a55 | 9055 | /* Equality function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 9056 | |
80626a55 DE |
9057 | static int |
9058 | eq_dwp_loaded_cutus (const void *a, const void *b) | |
3019eac3 | 9059 | { |
80626a55 DE |
9060 | const struct dwo_unit *dua = a; |
9061 | const struct dwo_unit *dub = b; | |
3019eac3 | 9062 | |
80626a55 DE |
9063 | return dua->signature == dub->signature; |
9064 | } | |
3019eac3 | 9065 | |
80626a55 | 9066 | /* Allocate a hash table for dwp_file loaded CUs/TUs. */ |
3019eac3 | 9067 | |
80626a55 DE |
9068 | static htab_t |
9069 | allocate_dwp_loaded_cutus_table (struct objfile *objfile) | |
9070 | { | |
9071 | return htab_create_alloc_ex (3, | |
9072 | hash_dwp_loaded_cutus, | |
9073 | eq_dwp_loaded_cutus, | |
9074 | NULL, | |
9075 | &objfile->objfile_obstack, | |
9076 | hashtab_obstack_allocate, | |
9077 | dummy_obstack_deallocate); | |
9078 | } | |
3019eac3 | 9079 | |
80626a55 DE |
9080 | /* Initialize the use of the DWP file for the current objfile. |
9081 | By convention the name of the DWP file is ${objfile}.dwp. | |
9082 | The result is NULL if it can't be found. */ | |
a766d390 | 9083 | |
80626a55 DE |
9084 | static struct dwp_file * |
9085 | open_and_init_dwp_file (const char *comp_dir) | |
9086 | { | |
9087 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
9088 | struct dwp_file *dwp_file; | |
9089 | char *dwp_name; | |
9090 | bfd *dbfd; | |
9091 | struct cleanup *cleanups; | |
9092 | ||
2792b94d | 9093 | dwp_name = xstrprintf ("%s.dwp", dwarf2_per_objfile->objfile->name); |
80626a55 DE |
9094 | cleanups = make_cleanup (xfree, dwp_name); |
9095 | ||
9096 | dbfd = open_dwop_file (dwp_name, comp_dir, 1); | |
9097 | if (dbfd == NULL) | |
9098 | { | |
9099 | if (dwarf2_read_debug) | |
9100 | fprintf_unfiltered (gdb_stdlog, "DWP file not found: %s\n", dwp_name); | |
9101 | do_cleanups (cleanups); | |
9102 | return NULL; | |
3019eac3 | 9103 | } |
80626a55 DE |
9104 | dwp_file = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwp_file); |
9105 | dwp_file->name = obstack_copy0 (&objfile->objfile_obstack, | |
9106 | dwp_name, strlen (dwp_name)); | |
9107 | dwp_file->dbfd = dbfd; | |
9108 | do_cleanups (cleanups); | |
c906108c | 9109 | |
80626a55 | 9110 | cleanups = make_cleanup (free_dwo_file_cleanup, dwp_file); |
df8a16a1 | 9111 | |
80626a55 DE |
9112 | /* +1: section 0 is unused */ |
9113 | dwp_file->num_sections = bfd_count_sections (dbfd) + 1; | |
9114 | dwp_file->elf_sections = | |
9115 | OBSTACK_CALLOC (&objfile->objfile_obstack, | |
9116 | dwp_file->num_sections, asection *); | |
9117 | ||
9118 | bfd_map_over_sections (dbfd, dwarf2_locate_dwp_sections, dwp_file); | |
9119 | ||
9120 | dwp_file->cus = create_dwp_hash_table (dwp_file, 0); | |
9121 | ||
9122 | dwp_file->tus = create_dwp_hash_table (dwp_file, 1); | |
9123 | ||
9124 | dwp_file->loaded_cutus = allocate_dwp_loaded_cutus_table (objfile); | |
9125 | ||
9126 | discard_cleanups (cleanups); | |
9127 | ||
9128 | if (dwarf2_read_debug) | |
9129 | { | |
9130 | fprintf_unfiltered (gdb_stdlog, "DWP file found: %s\n", dwp_file->name); | |
9131 | fprintf_unfiltered (gdb_stdlog, | |
9132 | " %u CUs, %u TUs\n", | |
9133 | dwp_file->cus ? dwp_file->cus->nr_units : 0, | |
9134 | dwp_file->tus ? dwp_file->tus->nr_units : 0); | |
9135 | } | |
9136 | ||
9137 | return dwp_file; | |
3019eac3 | 9138 | } |
c906108c | 9139 | |
80626a55 DE |
9140 | /* Subroutine of lookup_dwo_comp_unit, lookup_dwo_type_unit. |
9141 | Look up the CU/TU with signature SIGNATURE, either in DWO file DWO_NAME | |
9142 | or in the DWP file for the objfile, referenced by THIS_UNIT. | |
3019eac3 | 9143 | If non-NULL, comp_dir is the DW_AT_comp_dir attribute. |
80626a55 DE |
9144 | IS_DEBUG_TYPES is non-zero if reading a TU, otherwise read a CU. |
9145 | ||
9146 | This is called, for example, when wanting to read a variable with a | |
9147 | complex location. Therefore we don't want to do file i/o for every call. | |
9148 | Therefore we don't want to look for a DWO file on every call. | |
9149 | Therefore we first see if we've already seen SIGNATURE in a DWP file, | |
9150 | then we check if we've already seen DWO_NAME, and only THEN do we check | |
9151 | for a DWO file. | |
9152 | ||
1c658ad5 | 9153 | The result is a pointer to the dwo_unit object or NULL if we didn't find it |
80626a55 | 9154 | (dwo_id mismatch or couldn't find the DWO/DWP file). */ |
debd256d | 9155 | |
3019eac3 | 9156 | static struct dwo_unit * |
80626a55 DE |
9157 | lookup_dwo_cutu (struct dwarf2_per_cu_data *this_unit, |
9158 | const char *dwo_name, const char *comp_dir, | |
9159 | ULONGEST signature, int is_debug_types) | |
3019eac3 DE |
9160 | { |
9161 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
80626a55 DE |
9162 | const char *kind = is_debug_types ? "TU" : "CU"; |
9163 | void **dwo_file_slot; | |
3019eac3 | 9164 | struct dwo_file *dwo_file; |
80626a55 | 9165 | struct dwp_file *dwp_file; |
cb1df416 | 9166 | |
80626a55 | 9167 | /* Have we already read SIGNATURE from a DWP file? */ |
cf2c3c16 | 9168 | |
80626a55 DE |
9169 | if (! dwarf2_per_objfile->dwp_checked) |
9170 | { | |
9171 | dwarf2_per_objfile->dwp_file = open_and_init_dwp_file (comp_dir); | |
9172 | dwarf2_per_objfile->dwp_checked = 1; | |
9173 | } | |
9174 | dwp_file = dwarf2_per_objfile->dwp_file; | |
3019eac3 | 9175 | |
80626a55 | 9176 | if (dwp_file != NULL) |
cf2c3c16 | 9177 | { |
80626a55 DE |
9178 | const struct dwp_hash_table *dwp_htab = |
9179 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
9180 | ||
9181 | if (dwp_htab != NULL) | |
9182 | { | |
9183 | struct dwo_unit *dwo_cutu = | |
9184 | lookup_dwo_in_dwp (dwp_file, dwp_htab, signature, is_debug_types); | |
9185 | ||
9186 | if (dwo_cutu != NULL) | |
9187 | { | |
9188 | if (dwarf2_read_debug) | |
9189 | { | |
9190 | fprintf_unfiltered (gdb_stdlog, | |
9191 | "Virtual DWO %s %s found: @%s\n", | |
9192 | kind, hex_string (signature), | |
9193 | host_address_to_string (dwo_cutu)); | |
9194 | } | |
9195 | return dwo_cutu; | |
9196 | } | |
9197 | } | |
9198 | } | |
9199 | ||
9200 | /* Have we already seen DWO_NAME? */ | |
9201 | ||
9202 | dwo_file_slot = lookup_dwo_file_slot (dwo_name); | |
9203 | if (*dwo_file_slot == NULL) | |
9204 | { | |
9205 | /* Read in the file and build a table of the DWOs it contains. */ | |
9206 | *dwo_file_slot = open_and_init_dwo_file (dwo_name, comp_dir); | |
9207 | } | |
9208 | /* NOTE: This will be NULL if unable to open the file. */ | |
9209 | dwo_file = *dwo_file_slot; | |
9210 | ||
9211 | if (dwo_file != NULL) | |
9212 | { | |
9213 | htab_t htab = is_debug_types ? dwo_file->tus : dwo_file->cus; | |
9214 | ||
9215 | if (htab != NULL) | |
9216 | { | |
9217 | struct dwo_unit find_dwo_cutu, *dwo_cutu; | |
9a619af0 | 9218 | |
80626a55 DE |
9219 | memset (&find_dwo_cutu, 0, sizeof (find_dwo_cutu)); |
9220 | find_dwo_cutu.signature = signature; | |
9221 | dwo_cutu = htab_find (htab, &find_dwo_cutu); | |
3019eac3 | 9222 | |
80626a55 DE |
9223 | if (dwo_cutu != NULL) |
9224 | { | |
9225 | if (dwarf2_read_debug) | |
9226 | { | |
9227 | fprintf_unfiltered (gdb_stdlog, "DWO %s %s(%s) found: @%s\n", | |
9228 | kind, dwo_name, hex_string (signature), | |
9229 | host_address_to_string (dwo_cutu)); | |
9230 | } | |
9231 | return dwo_cutu; | |
9232 | } | |
9233 | } | |
2e276125 | 9234 | } |
9cdd5dbd | 9235 | |
80626a55 DE |
9236 | /* We didn't find it. This could mean a dwo_id mismatch, or |
9237 | someone deleted the DWO/DWP file, or the search path isn't set up | |
9238 | correctly to find the file. */ | |
9239 | ||
9240 | if (dwarf2_read_debug) | |
9241 | { | |
9242 | fprintf_unfiltered (gdb_stdlog, "DWO %s %s(%s) not found\n", | |
9243 | kind, dwo_name, hex_string (signature)); | |
9244 | } | |
3019eac3 DE |
9245 | |
9246 | complaint (&symfile_complaints, | |
80626a55 | 9247 | _("Could not find DWO CU referenced by CU at offset 0x%x" |
3019eac3 | 9248 | " [in module %s]"), |
80626a55 | 9249 | this_unit->offset.sect_off, objfile->name); |
3019eac3 | 9250 | return NULL; |
5fb290d7 DJ |
9251 | } |
9252 | ||
80626a55 DE |
9253 | /* Lookup the DWO CU DWO_NAME/SIGNATURE referenced from THIS_CU. |
9254 | See lookup_dwo_cutu_unit for details. */ | |
9255 | ||
9256 | static struct dwo_unit * | |
9257 | lookup_dwo_comp_unit (struct dwarf2_per_cu_data *this_cu, | |
9258 | const char *dwo_name, const char *comp_dir, | |
9259 | ULONGEST signature) | |
9260 | { | |
9261 | return lookup_dwo_cutu (this_cu, dwo_name, comp_dir, signature, 0); | |
9262 | } | |
9263 | ||
9264 | /* Lookup the DWO TU DWO_NAME/SIGNATURE referenced from THIS_TU. | |
9265 | See lookup_dwo_cutu_unit for details. */ | |
9266 | ||
9267 | static struct dwo_unit * | |
9268 | lookup_dwo_type_unit (struct signatured_type *this_tu, | |
9269 | const char *dwo_name, const char *comp_dir) | |
9270 | { | |
9271 | return lookup_dwo_cutu (&this_tu->per_cu, dwo_name, comp_dir, this_tu->signature, 1); | |
9272 | } | |
9273 | ||
3019eac3 DE |
9274 | /* Free all resources associated with DWO_FILE. |
9275 | Close the DWO file and munmap the sections. | |
9276 | All memory should be on the objfile obstack. */ | |
348e048f DE |
9277 | |
9278 | static void | |
3019eac3 | 9279 | free_dwo_file (struct dwo_file *dwo_file, struct objfile *objfile) |
348e048f | 9280 | { |
3019eac3 DE |
9281 | int ix; |
9282 | struct dwarf2_section_info *section; | |
348e048f | 9283 | |
80626a55 | 9284 | gdb_bfd_unref (dwo_file->dbfd); |
348e048f | 9285 | |
3019eac3 DE |
9286 | VEC_free (dwarf2_section_info_def, dwo_file->sections.types); |
9287 | } | |
348e048f | 9288 | |
3019eac3 | 9289 | /* Wrapper for free_dwo_file for use in cleanups. */ |
348e048f | 9290 | |
3019eac3 DE |
9291 | static void |
9292 | free_dwo_file_cleanup (void *arg) | |
9293 | { | |
9294 | struct dwo_file *dwo_file = (struct dwo_file *) arg; | |
9295 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
348e048f | 9296 | |
3019eac3 DE |
9297 | free_dwo_file (dwo_file, objfile); |
9298 | } | |
348e048f | 9299 | |
3019eac3 | 9300 | /* Traversal function for free_dwo_files. */ |
2ab95328 | 9301 | |
3019eac3 DE |
9302 | static int |
9303 | free_dwo_file_from_slot (void **slot, void *info) | |
9304 | { | |
9305 | struct dwo_file *dwo_file = (struct dwo_file *) *slot; | |
9306 | struct objfile *objfile = (struct objfile *) info; | |
348e048f | 9307 | |
3019eac3 | 9308 | free_dwo_file (dwo_file, objfile); |
348e048f | 9309 | |
3019eac3 DE |
9310 | return 1; |
9311 | } | |
348e048f | 9312 | |
3019eac3 | 9313 | /* Free all resources associated with DWO_FILES. */ |
348e048f | 9314 | |
3019eac3 DE |
9315 | static void |
9316 | free_dwo_files (htab_t dwo_files, struct objfile *objfile) | |
9317 | { | |
9318 | htab_traverse_noresize (dwo_files, free_dwo_file_from_slot, objfile); | |
348e048f | 9319 | } |
3019eac3 DE |
9320 | \f |
9321 | /* Read in various DIEs. */ | |
348e048f | 9322 | |
d389af10 JK |
9323 | /* qsort helper for inherit_abstract_dies. */ |
9324 | ||
9325 | static int | |
9326 | unsigned_int_compar (const void *ap, const void *bp) | |
9327 | { | |
9328 | unsigned int a = *(unsigned int *) ap; | |
9329 | unsigned int b = *(unsigned int *) bp; | |
9330 | ||
9331 | return (a > b) - (b > a); | |
9332 | } | |
9333 | ||
9334 | /* DW_AT_abstract_origin inherits whole DIEs (not just their attributes). | |
3e43a32a MS |
9335 | Inherit only the children of the DW_AT_abstract_origin DIE not being |
9336 | already referenced by DW_AT_abstract_origin from the children of the | |
9337 | current DIE. */ | |
d389af10 JK |
9338 | |
9339 | static void | |
9340 | inherit_abstract_dies (struct die_info *die, struct dwarf2_cu *cu) | |
9341 | { | |
9342 | struct die_info *child_die; | |
9343 | unsigned die_children_count; | |
9344 | /* CU offsets which were referenced by children of the current DIE. */ | |
b64f50a1 JK |
9345 | sect_offset *offsets; |
9346 | sect_offset *offsets_end, *offsetp; | |
d389af10 JK |
9347 | /* Parent of DIE - referenced by DW_AT_abstract_origin. */ |
9348 | struct die_info *origin_die; | |
9349 | /* Iterator of the ORIGIN_DIE children. */ | |
9350 | struct die_info *origin_child_die; | |
9351 | struct cleanup *cleanups; | |
9352 | struct attribute *attr; | |
cd02d79d PA |
9353 | struct dwarf2_cu *origin_cu; |
9354 | struct pending **origin_previous_list_in_scope; | |
d389af10 JK |
9355 | |
9356 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
9357 | if (!attr) | |
9358 | return; | |
9359 | ||
cd02d79d PA |
9360 | /* Note that following die references may follow to a die in a |
9361 | different cu. */ | |
9362 | ||
9363 | origin_cu = cu; | |
9364 | origin_die = follow_die_ref (die, attr, &origin_cu); | |
9365 | ||
9366 | /* We're inheriting ORIGIN's children into the scope we'd put DIE's | |
9367 | symbols in. */ | |
9368 | origin_previous_list_in_scope = origin_cu->list_in_scope; | |
9369 | origin_cu->list_in_scope = cu->list_in_scope; | |
9370 | ||
edb3359d DJ |
9371 | if (die->tag != origin_die->tag |
9372 | && !(die->tag == DW_TAG_inlined_subroutine | |
9373 | && origin_die->tag == DW_TAG_subprogram)) | |
d389af10 JK |
9374 | complaint (&symfile_complaints, |
9375 | _("DIE 0x%x and its abstract origin 0x%x have different tags"), | |
b64f50a1 | 9376 | die->offset.sect_off, origin_die->offset.sect_off); |
d389af10 JK |
9377 | |
9378 | child_die = die->child; | |
9379 | die_children_count = 0; | |
9380 | while (child_die && child_die->tag) | |
9381 | { | |
9382 | child_die = sibling_die (child_die); | |
9383 | die_children_count++; | |
9384 | } | |
9385 | offsets = xmalloc (sizeof (*offsets) * die_children_count); | |
9386 | cleanups = make_cleanup (xfree, offsets); | |
9387 | ||
9388 | offsets_end = offsets; | |
9389 | child_die = die->child; | |
9390 | while (child_die && child_die->tag) | |
9391 | { | |
c38f313d DJ |
9392 | /* For each CHILD_DIE, find the corresponding child of |
9393 | ORIGIN_DIE. If there is more than one layer of | |
9394 | DW_AT_abstract_origin, follow them all; there shouldn't be, | |
9395 | but GCC versions at least through 4.4 generate this (GCC PR | |
9396 | 40573). */ | |
9397 | struct die_info *child_origin_die = child_die; | |
cd02d79d | 9398 | struct dwarf2_cu *child_origin_cu = cu; |
9a619af0 | 9399 | |
c38f313d DJ |
9400 | while (1) |
9401 | { | |
cd02d79d PA |
9402 | attr = dwarf2_attr (child_origin_die, DW_AT_abstract_origin, |
9403 | child_origin_cu); | |
c38f313d DJ |
9404 | if (attr == NULL) |
9405 | break; | |
cd02d79d PA |
9406 | child_origin_die = follow_die_ref (child_origin_die, attr, |
9407 | &child_origin_cu); | |
c38f313d DJ |
9408 | } |
9409 | ||
d389af10 JK |
9410 | /* According to DWARF3 3.3.8.2 #3 new entries without their abstract |
9411 | counterpart may exist. */ | |
c38f313d | 9412 | if (child_origin_die != child_die) |
d389af10 | 9413 | { |
edb3359d DJ |
9414 | if (child_die->tag != child_origin_die->tag |
9415 | && !(child_die->tag == DW_TAG_inlined_subroutine | |
9416 | && child_origin_die->tag == DW_TAG_subprogram)) | |
d389af10 JK |
9417 | complaint (&symfile_complaints, |
9418 | _("Child DIE 0x%x and its abstract origin 0x%x have " | |
b64f50a1 JK |
9419 | "different tags"), child_die->offset.sect_off, |
9420 | child_origin_die->offset.sect_off); | |
c38f313d DJ |
9421 | if (child_origin_die->parent != origin_die) |
9422 | complaint (&symfile_complaints, | |
9423 | _("Child DIE 0x%x and its abstract origin 0x%x have " | |
b64f50a1 JK |
9424 | "different parents"), child_die->offset.sect_off, |
9425 | child_origin_die->offset.sect_off); | |
c38f313d DJ |
9426 | else |
9427 | *offsets_end++ = child_origin_die->offset; | |
d389af10 JK |
9428 | } |
9429 | child_die = sibling_die (child_die); | |
9430 | } | |
9431 | qsort (offsets, offsets_end - offsets, sizeof (*offsets), | |
9432 | unsigned_int_compar); | |
9433 | for (offsetp = offsets + 1; offsetp < offsets_end; offsetp++) | |
b64f50a1 | 9434 | if (offsetp[-1].sect_off == offsetp->sect_off) |
3e43a32a MS |
9435 | complaint (&symfile_complaints, |
9436 | _("Multiple children of DIE 0x%x refer " | |
9437 | "to DIE 0x%x as their abstract origin"), | |
b64f50a1 | 9438 | die->offset.sect_off, offsetp->sect_off); |
d389af10 JK |
9439 | |
9440 | offsetp = offsets; | |
9441 | origin_child_die = origin_die->child; | |
9442 | while (origin_child_die && origin_child_die->tag) | |
9443 | { | |
9444 | /* Is ORIGIN_CHILD_DIE referenced by any of the DIE children? */ | |
b64f50a1 JK |
9445 | while (offsetp < offsets_end |
9446 | && offsetp->sect_off < origin_child_die->offset.sect_off) | |
d389af10 | 9447 | offsetp++; |
b64f50a1 JK |
9448 | if (offsetp >= offsets_end |
9449 | || offsetp->sect_off > origin_child_die->offset.sect_off) | |
d389af10 JK |
9450 | { |
9451 | /* Found that ORIGIN_CHILD_DIE is really not referenced. */ | |
cd02d79d | 9452 | process_die (origin_child_die, origin_cu); |
d389af10 JK |
9453 | } |
9454 | origin_child_die = sibling_die (origin_child_die); | |
9455 | } | |
cd02d79d | 9456 | origin_cu->list_in_scope = origin_previous_list_in_scope; |
d389af10 JK |
9457 | |
9458 | do_cleanups (cleanups); | |
9459 | } | |
9460 | ||
c906108c | 9461 | static void |
e7c27a73 | 9462 | read_func_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 9463 | { |
e7c27a73 | 9464 | struct objfile *objfile = cu->objfile; |
52f0bd74 | 9465 | struct context_stack *new; |
c906108c SS |
9466 | CORE_ADDR lowpc; |
9467 | CORE_ADDR highpc; | |
9468 | struct die_info *child_die; | |
edb3359d | 9469 | struct attribute *attr, *call_line, *call_file; |
15d034d0 | 9470 | const char *name; |
e142c38c | 9471 | CORE_ADDR baseaddr; |
801e3a5b | 9472 | struct block *block; |
edb3359d | 9473 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
34eaf542 TT |
9474 | VEC (symbolp) *template_args = NULL; |
9475 | struct template_symbol *templ_func = NULL; | |
edb3359d DJ |
9476 | |
9477 | if (inlined_func) | |
9478 | { | |
9479 | /* If we do not have call site information, we can't show the | |
9480 | caller of this inlined function. That's too confusing, so | |
9481 | only use the scope for local variables. */ | |
9482 | call_line = dwarf2_attr (die, DW_AT_call_line, cu); | |
9483 | call_file = dwarf2_attr (die, DW_AT_call_file, cu); | |
9484 | if (call_line == NULL || call_file == NULL) | |
9485 | { | |
9486 | read_lexical_block_scope (die, cu); | |
9487 | return; | |
9488 | } | |
9489 | } | |
c906108c | 9490 | |
e142c38c DJ |
9491 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
9492 | ||
94af9270 | 9493 | name = dwarf2_name (die, cu); |
c906108c | 9494 | |
e8d05480 JB |
9495 | /* Ignore functions with missing or empty names. These are actually |
9496 | illegal according to the DWARF standard. */ | |
9497 | if (name == NULL) | |
9498 | { | |
9499 | complaint (&symfile_complaints, | |
b64f50a1 JK |
9500 | _("missing name for subprogram DIE at %d"), |
9501 | die->offset.sect_off); | |
e8d05480 JB |
9502 | return; |
9503 | } | |
9504 | ||
9505 | /* Ignore functions with missing or invalid low and high pc attributes. */ | |
9506 | if (!dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL)) | |
9507 | { | |
ae4d0c03 PM |
9508 | attr = dwarf2_attr (die, DW_AT_external, cu); |
9509 | if (!attr || !DW_UNSND (attr)) | |
9510 | complaint (&symfile_complaints, | |
3e43a32a MS |
9511 | _("cannot get low and high bounds " |
9512 | "for subprogram DIE at %d"), | |
b64f50a1 | 9513 | die->offset.sect_off); |
e8d05480 JB |
9514 | return; |
9515 | } | |
c906108c SS |
9516 | |
9517 | lowpc += baseaddr; | |
9518 | highpc += baseaddr; | |
9519 | ||
34eaf542 TT |
9520 | /* If we have any template arguments, then we must allocate a |
9521 | different sort of symbol. */ | |
9522 | for (child_die = die->child; child_die; child_die = sibling_die (child_die)) | |
9523 | { | |
9524 | if (child_die->tag == DW_TAG_template_type_param | |
9525 | || child_die->tag == DW_TAG_template_value_param) | |
9526 | { | |
9527 | templ_func = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
9528 | struct template_symbol); | |
9529 | templ_func->base.is_cplus_template_function = 1; | |
9530 | break; | |
9531 | } | |
9532 | } | |
9533 | ||
c906108c | 9534 | new = push_context (0, lowpc); |
34eaf542 TT |
9535 | new->name = new_symbol_full (die, read_type_die (die, cu), cu, |
9536 | (struct symbol *) templ_func); | |
4c2df51b | 9537 | |
4cecd739 DJ |
9538 | /* If there is a location expression for DW_AT_frame_base, record |
9539 | it. */ | |
e142c38c | 9540 | attr = dwarf2_attr (die, DW_AT_frame_base, cu); |
4c2df51b | 9541 | if (attr) |
f1e6e072 | 9542 | dwarf2_symbol_mark_computed (attr, new->name, cu, 1); |
4c2df51b | 9543 | |
e142c38c | 9544 | cu->list_in_scope = &local_symbols; |
c906108c | 9545 | |
639d11d3 | 9546 | if (die->child != NULL) |
c906108c | 9547 | { |
639d11d3 | 9548 | child_die = die->child; |
c906108c SS |
9549 | while (child_die && child_die->tag) |
9550 | { | |
34eaf542 TT |
9551 | if (child_die->tag == DW_TAG_template_type_param |
9552 | || child_die->tag == DW_TAG_template_value_param) | |
9553 | { | |
9554 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
9555 | ||
f1078f66 DJ |
9556 | if (arg != NULL) |
9557 | VEC_safe_push (symbolp, template_args, arg); | |
34eaf542 TT |
9558 | } |
9559 | else | |
9560 | process_die (child_die, cu); | |
c906108c SS |
9561 | child_die = sibling_die (child_die); |
9562 | } | |
9563 | } | |
9564 | ||
d389af10 JK |
9565 | inherit_abstract_dies (die, cu); |
9566 | ||
4a811a97 UW |
9567 | /* If we have a DW_AT_specification, we might need to import using |
9568 | directives from the context of the specification DIE. See the | |
9569 | comment in determine_prefix. */ | |
9570 | if (cu->language == language_cplus | |
9571 | && dwarf2_attr (die, DW_AT_specification, cu)) | |
9572 | { | |
9573 | struct dwarf2_cu *spec_cu = cu; | |
9574 | struct die_info *spec_die = die_specification (die, &spec_cu); | |
9575 | ||
9576 | while (spec_die) | |
9577 | { | |
9578 | child_die = spec_die->child; | |
9579 | while (child_die && child_die->tag) | |
9580 | { | |
9581 | if (child_die->tag == DW_TAG_imported_module) | |
9582 | process_die (child_die, spec_cu); | |
9583 | child_die = sibling_die (child_die); | |
9584 | } | |
9585 | ||
9586 | /* In some cases, GCC generates specification DIEs that | |
9587 | themselves contain DW_AT_specification attributes. */ | |
9588 | spec_die = die_specification (spec_die, &spec_cu); | |
9589 | } | |
9590 | } | |
9591 | ||
c906108c SS |
9592 | new = pop_context (); |
9593 | /* Make a block for the local symbols within. */ | |
801e3a5b JB |
9594 | block = finish_block (new->name, &local_symbols, new->old_blocks, |
9595 | lowpc, highpc, objfile); | |
9596 | ||
df8a16a1 | 9597 | /* For C++, set the block's scope. */ |
195a3f6c | 9598 | if ((cu->language == language_cplus || cu->language == language_fortran) |
4d4ec4e5 | 9599 | && cu->processing_has_namespace_info) |
195a3f6c TT |
9600 | block_set_scope (block, determine_prefix (die, cu), |
9601 | &objfile->objfile_obstack); | |
df8a16a1 | 9602 | |
801e3a5b JB |
9603 | /* If we have address ranges, record them. */ |
9604 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
6e70227d | 9605 | |
34eaf542 TT |
9606 | /* Attach template arguments to function. */ |
9607 | if (! VEC_empty (symbolp, template_args)) | |
9608 | { | |
9609 | gdb_assert (templ_func != NULL); | |
9610 | ||
9611 | templ_func->n_template_arguments = VEC_length (symbolp, template_args); | |
9612 | templ_func->template_arguments | |
9613 | = obstack_alloc (&objfile->objfile_obstack, | |
9614 | (templ_func->n_template_arguments | |
9615 | * sizeof (struct symbol *))); | |
9616 | memcpy (templ_func->template_arguments, | |
9617 | VEC_address (symbolp, template_args), | |
9618 | (templ_func->n_template_arguments * sizeof (struct symbol *))); | |
9619 | VEC_free (symbolp, template_args); | |
9620 | } | |
9621 | ||
208d8187 JB |
9622 | /* In C++, we can have functions nested inside functions (e.g., when |
9623 | a function declares a class that has methods). This means that | |
9624 | when we finish processing a function scope, we may need to go | |
9625 | back to building a containing block's symbol lists. */ | |
9626 | local_symbols = new->locals; | |
27aa8d6a | 9627 | using_directives = new->using_directives; |
208d8187 | 9628 | |
921e78cf JB |
9629 | /* If we've finished processing a top-level function, subsequent |
9630 | symbols go in the file symbol list. */ | |
9631 | if (outermost_context_p ()) | |
e142c38c | 9632 | cu->list_in_scope = &file_symbols; |
c906108c SS |
9633 | } |
9634 | ||
9635 | /* Process all the DIES contained within a lexical block scope. Start | |
9636 | a new scope, process the dies, and then close the scope. */ | |
9637 | ||
9638 | static void | |
e7c27a73 | 9639 | read_lexical_block_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 9640 | { |
e7c27a73 | 9641 | struct objfile *objfile = cu->objfile; |
52f0bd74 | 9642 | struct context_stack *new; |
c906108c SS |
9643 | CORE_ADDR lowpc, highpc; |
9644 | struct die_info *child_die; | |
e142c38c DJ |
9645 | CORE_ADDR baseaddr; |
9646 | ||
9647 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c SS |
9648 | |
9649 | /* Ignore blocks with missing or invalid low and high pc attributes. */ | |
af34e669 DJ |
9650 | /* ??? Perhaps consider discontiguous blocks defined by DW_AT_ranges |
9651 | as multiple lexical blocks? Handling children in a sane way would | |
6e70227d | 9652 | be nasty. Might be easier to properly extend generic blocks to |
af34e669 | 9653 | describe ranges. */ |
d85a05f0 | 9654 | if (!dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL)) |
c906108c SS |
9655 | return; |
9656 | lowpc += baseaddr; | |
9657 | highpc += baseaddr; | |
9658 | ||
9659 | push_context (0, lowpc); | |
639d11d3 | 9660 | if (die->child != NULL) |
c906108c | 9661 | { |
639d11d3 | 9662 | child_die = die->child; |
c906108c SS |
9663 | while (child_die && child_die->tag) |
9664 | { | |
e7c27a73 | 9665 | process_die (child_die, cu); |
c906108c SS |
9666 | child_die = sibling_die (child_die); |
9667 | } | |
9668 | } | |
9669 | new = pop_context (); | |
9670 | ||
8540c487 | 9671 | if (local_symbols != NULL || using_directives != NULL) |
c906108c | 9672 | { |
801e3a5b JB |
9673 | struct block *block |
9674 | = finish_block (0, &local_symbols, new->old_blocks, new->start_addr, | |
9675 | highpc, objfile); | |
9676 | ||
9677 | /* Note that recording ranges after traversing children, as we | |
9678 | do here, means that recording a parent's ranges entails | |
9679 | walking across all its children's ranges as they appear in | |
9680 | the address map, which is quadratic behavior. | |
9681 | ||
9682 | It would be nicer to record the parent's ranges before | |
9683 | traversing its children, simply overriding whatever you find | |
9684 | there. But since we don't even decide whether to create a | |
9685 | block until after we've traversed its children, that's hard | |
9686 | to do. */ | |
9687 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
c906108c SS |
9688 | } |
9689 | local_symbols = new->locals; | |
27aa8d6a | 9690 | using_directives = new->using_directives; |
c906108c SS |
9691 | } |
9692 | ||
96408a79 SA |
9693 | /* Read in DW_TAG_GNU_call_site and insert it to CU->call_site_htab. */ |
9694 | ||
9695 | static void | |
9696 | read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu) | |
9697 | { | |
9698 | struct objfile *objfile = cu->objfile; | |
9699 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
9700 | CORE_ADDR pc, baseaddr; | |
9701 | struct attribute *attr; | |
9702 | struct call_site *call_site, call_site_local; | |
9703 | void **slot; | |
9704 | int nparams; | |
9705 | struct die_info *child_die; | |
9706 | ||
9707 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
9708 | ||
9709 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
9710 | if (!attr) | |
9711 | { | |
9712 | complaint (&symfile_complaints, | |
9713 | _("missing DW_AT_low_pc for DW_TAG_GNU_call_site " | |
9714 | "DIE 0x%x [in module %s]"), | |
b64f50a1 | 9715 | die->offset.sect_off, objfile->name); |
96408a79 SA |
9716 | return; |
9717 | } | |
9718 | pc = DW_ADDR (attr) + baseaddr; | |
9719 | ||
9720 | if (cu->call_site_htab == NULL) | |
9721 | cu->call_site_htab = htab_create_alloc_ex (16, core_addr_hash, core_addr_eq, | |
9722 | NULL, &objfile->objfile_obstack, | |
9723 | hashtab_obstack_allocate, NULL); | |
9724 | call_site_local.pc = pc; | |
9725 | slot = htab_find_slot (cu->call_site_htab, &call_site_local, INSERT); | |
9726 | if (*slot != NULL) | |
9727 | { | |
9728 | complaint (&symfile_complaints, | |
9729 | _("Duplicate PC %s for DW_TAG_GNU_call_site " | |
9730 | "DIE 0x%x [in module %s]"), | |
b64f50a1 | 9731 | paddress (gdbarch, pc), die->offset.sect_off, objfile->name); |
96408a79 SA |
9732 | return; |
9733 | } | |
9734 | ||
9735 | /* Count parameters at the caller. */ | |
9736 | ||
9737 | nparams = 0; | |
9738 | for (child_die = die->child; child_die && child_die->tag; | |
9739 | child_die = sibling_die (child_die)) | |
9740 | { | |
9741 | if (child_die->tag != DW_TAG_GNU_call_site_parameter) | |
9742 | { | |
9743 | complaint (&symfile_complaints, | |
9744 | _("Tag %d is not DW_TAG_GNU_call_site_parameter in " | |
9745 | "DW_TAG_GNU_call_site child DIE 0x%x [in module %s]"), | |
b64f50a1 | 9746 | child_die->tag, child_die->offset.sect_off, objfile->name); |
96408a79 SA |
9747 | continue; |
9748 | } | |
9749 | ||
9750 | nparams++; | |
9751 | } | |
9752 | ||
9753 | call_site = obstack_alloc (&objfile->objfile_obstack, | |
9754 | (sizeof (*call_site) | |
9755 | + (sizeof (*call_site->parameter) | |
9756 | * (nparams - 1)))); | |
9757 | *slot = call_site; | |
9758 | memset (call_site, 0, sizeof (*call_site) - sizeof (*call_site->parameter)); | |
9759 | call_site->pc = pc; | |
9760 | ||
9761 | if (dwarf2_flag_true_p (die, DW_AT_GNU_tail_call, cu)) | |
9762 | { | |
9763 | struct die_info *func_die; | |
9764 | ||
9765 | /* Skip also over DW_TAG_inlined_subroutine. */ | |
9766 | for (func_die = die->parent; | |
9767 | func_die && func_die->tag != DW_TAG_subprogram | |
9768 | && func_die->tag != DW_TAG_subroutine_type; | |
9769 | func_die = func_die->parent); | |
9770 | ||
9771 | /* DW_AT_GNU_all_call_sites is a superset | |
9772 | of DW_AT_GNU_all_tail_call_sites. */ | |
9773 | if (func_die | |
9774 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_call_sites, cu) | |
9775 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_tail_call_sites, cu)) | |
9776 | { | |
9777 | /* TYPE_TAIL_CALL_LIST is not interesting in functions where it is | |
9778 | not complete. But keep CALL_SITE for look ups via call_site_htab, | |
9779 | both the initial caller containing the real return address PC and | |
9780 | the final callee containing the current PC of a chain of tail | |
9781 | calls do not need to have the tail call list complete. But any | |
9782 | function candidate for a virtual tail call frame searched via | |
9783 | TYPE_TAIL_CALL_LIST must have the tail call list complete to be | |
9784 | determined unambiguously. */ | |
9785 | } | |
9786 | else | |
9787 | { | |
9788 | struct type *func_type = NULL; | |
9789 | ||
9790 | if (func_die) | |
9791 | func_type = get_die_type (func_die, cu); | |
9792 | if (func_type != NULL) | |
9793 | { | |
9794 | gdb_assert (TYPE_CODE (func_type) == TYPE_CODE_FUNC); | |
9795 | ||
9796 | /* Enlist this call site to the function. */ | |
9797 | call_site->tail_call_next = TYPE_TAIL_CALL_LIST (func_type); | |
9798 | TYPE_TAIL_CALL_LIST (func_type) = call_site; | |
9799 | } | |
9800 | else | |
9801 | complaint (&symfile_complaints, | |
9802 | _("Cannot find function owning DW_TAG_GNU_call_site " | |
9803 | "DIE 0x%x [in module %s]"), | |
b64f50a1 | 9804 | die->offset.sect_off, objfile->name); |
96408a79 SA |
9805 | } |
9806 | } | |
9807 | ||
9808 | attr = dwarf2_attr (die, DW_AT_GNU_call_site_target, cu); | |
9809 | if (attr == NULL) | |
9810 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
9811 | SET_FIELD_DWARF_BLOCK (call_site->target, NULL); | |
9812 | if (!attr || (attr_form_is_block (attr) && DW_BLOCK (attr)->size == 0)) | |
9813 | /* Keep NULL DWARF_BLOCK. */; | |
9814 | else if (attr_form_is_block (attr)) | |
9815 | { | |
9816 | struct dwarf2_locexpr_baton *dlbaton; | |
9817 | ||
9818 | dlbaton = obstack_alloc (&objfile->objfile_obstack, sizeof (*dlbaton)); | |
9819 | dlbaton->data = DW_BLOCK (attr)->data; | |
9820 | dlbaton->size = DW_BLOCK (attr)->size; | |
9821 | dlbaton->per_cu = cu->per_cu; | |
9822 | ||
9823 | SET_FIELD_DWARF_BLOCK (call_site->target, dlbaton); | |
9824 | } | |
9825 | else if (is_ref_attr (attr)) | |
9826 | { | |
96408a79 SA |
9827 | struct dwarf2_cu *target_cu = cu; |
9828 | struct die_info *target_die; | |
9829 | ||
9830 | target_die = follow_die_ref_or_sig (die, attr, &target_cu); | |
9831 | gdb_assert (target_cu->objfile == objfile); | |
9832 | if (die_is_declaration (target_die, target_cu)) | |
9833 | { | |
9112db09 JK |
9834 | const char *target_physname = NULL; |
9835 | struct attribute *target_attr; | |
9836 | ||
9837 | /* Prefer the mangled name; otherwise compute the demangled one. */ | |
9838 | target_attr = dwarf2_attr (target_die, DW_AT_linkage_name, target_cu); | |
9839 | if (target_attr == NULL) | |
9840 | target_attr = dwarf2_attr (target_die, DW_AT_MIPS_linkage_name, | |
9841 | target_cu); | |
9842 | if (target_attr != NULL && DW_STRING (target_attr) != NULL) | |
9843 | target_physname = DW_STRING (target_attr); | |
9844 | else | |
9845 | target_physname = dwarf2_physname (NULL, target_die, target_cu); | |
96408a79 SA |
9846 | if (target_physname == NULL) |
9847 | complaint (&symfile_complaints, | |
9848 | _("DW_AT_GNU_call_site_target target DIE has invalid " | |
9849 | "physname, for referencing DIE 0x%x [in module %s]"), | |
b64f50a1 | 9850 | die->offset.sect_off, objfile->name); |
96408a79 | 9851 | else |
7d455152 | 9852 | SET_FIELD_PHYSNAME (call_site->target, target_physname); |
96408a79 SA |
9853 | } |
9854 | else | |
9855 | { | |
9856 | CORE_ADDR lowpc; | |
9857 | ||
9858 | /* DW_AT_entry_pc should be preferred. */ | |
9859 | if (!dwarf2_get_pc_bounds (target_die, &lowpc, NULL, target_cu, NULL)) | |
9860 | complaint (&symfile_complaints, | |
9861 | _("DW_AT_GNU_call_site_target target DIE has invalid " | |
9862 | "low pc, for referencing DIE 0x%x [in module %s]"), | |
b64f50a1 | 9863 | die->offset.sect_off, objfile->name); |
96408a79 SA |
9864 | else |
9865 | SET_FIELD_PHYSADDR (call_site->target, lowpc + baseaddr); | |
9866 | } | |
9867 | } | |
9868 | else | |
9869 | complaint (&symfile_complaints, | |
9870 | _("DW_TAG_GNU_call_site DW_AT_GNU_call_site_target is neither " | |
9871 | "block nor reference, for DIE 0x%x [in module %s]"), | |
b64f50a1 | 9872 | die->offset.sect_off, objfile->name); |
96408a79 SA |
9873 | |
9874 | call_site->per_cu = cu->per_cu; | |
9875 | ||
9876 | for (child_die = die->child; | |
9877 | child_die && child_die->tag; | |
9878 | child_die = sibling_die (child_die)) | |
9879 | { | |
96408a79 | 9880 | struct call_site_parameter *parameter; |
1788b2d3 | 9881 | struct attribute *loc, *origin; |
96408a79 SA |
9882 | |
9883 | if (child_die->tag != DW_TAG_GNU_call_site_parameter) | |
9884 | { | |
9885 | /* Already printed the complaint above. */ | |
9886 | continue; | |
9887 | } | |
9888 | ||
9889 | gdb_assert (call_site->parameter_count < nparams); | |
9890 | parameter = &call_site->parameter[call_site->parameter_count]; | |
9891 | ||
1788b2d3 JK |
9892 | /* DW_AT_location specifies the register number or DW_AT_abstract_origin |
9893 | specifies DW_TAG_formal_parameter. Value of the data assumed for the | |
9894 | register is contained in DW_AT_GNU_call_site_value. */ | |
96408a79 | 9895 | |
24c5c679 | 9896 | loc = dwarf2_attr (child_die, DW_AT_location, cu); |
1788b2d3 JK |
9897 | origin = dwarf2_attr (child_die, DW_AT_abstract_origin, cu); |
9898 | if (loc == NULL && origin != NULL && is_ref_attr (origin)) | |
9899 | { | |
9900 | sect_offset offset; | |
9901 | ||
9902 | parameter->kind = CALL_SITE_PARAMETER_PARAM_OFFSET; | |
9903 | offset = dwarf2_get_ref_die_offset (origin); | |
d76b7dbc JK |
9904 | if (!offset_in_cu_p (&cu->header, offset)) |
9905 | { | |
9906 | /* As DW_OP_GNU_parameter_ref uses CU-relative offset this | |
9907 | binding can be done only inside one CU. Such referenced DIE | |
9908 | therefore cannot be even moved to DW_TAG_partial_unit. */ | |
9909 | complaint (&symfile_complaints, | |
9910 | _("DW_AT_abstract_origin offset is not in CU for " | |
9911 | "DW_TAG_GNU_call_site child DIE 0x%x " | |
9912 | "[in module %s]"), | |
9913 | child_die->offset.sect_off, objfile->name); | |
9914 | continue; | |
9915 | } | |
1788b2d3 JK |
9916 | parameter->u.param_offset.cu_off = (offset.sect_off |
9917 | - cu->header.offset.sect_off); | |
9918 | } | |
9919 | else if (loc == NULL || origin != NULL || !attr_form_is_block (loc)) | |
96408a79 SA |
9920 | { |
9921 | complaint (&symfile_complaints, | |
9922 | _("No DW_FORM_block* DW_AT_location for " | |
9923 | "DW_TAG_GNU_call_site child DIE 0x%x [in module %s]"), | |
b64f50a1 | 9924 | child_die->offset.sect_off, objfile->name); |
96408a79 SA |
9925 | continue; |
9926 | } | |
24c5c679 | 9927 | else |
96408a79 | 9928 | { |
24c5c679 JK |
9929 | parameter->u.dwarf_reg = dwarf_block_to_dwarf_reg |
9930 | (DW_BLOCK (loc)->data, &DW_BLOCK (loc)->data[DW_BLOCK (loc)->size]); | |
9931 | if (parameter->u.dwarf_reg != -1) | |
9932 | parameter->kind = CALL_SITE_PARAMETER_DWARF_REG; | |
9933 | else if (dwarf_block_to_sp_offset (gdbarch, DW_BLOCK (loc)->data, | |
9934 | &DW_BLOCK (loc)->data[DW_BLOCK (loc)->size], | |
9935 | ¶meter->u.fb_offset)) | |
9936 | parameter->kind = CALL_SITE_PARAMETER_FB_OFFSET; | |
9937 | else | |
9938 | { | |
9939 | complaint (&symfile_complaints, | |
9940 | _("Only single DW_OP_reg or DW_OP_fbreg is supported " | |
9941 | "for DW_FORM_block* DW_AT_location is supported for " | |
9942 | "DW_TAG_GNU_call_site child DIE 0x%x " | |
9943 | "[in module %s]"), | |
9944 | child_die->offset.sect_off, objfile->name); | |
9945 | continue; | |
9946 | } | |
96408a79 SA |
9947 | } |
9948 | ||
9949 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_value, cu); | |
9950 | if (!attr_form_is_block (attr)) | |
9951 | { | |
9952 | complaint (&symfile_complaints, | |
9953 | _("No DW_FORM_block* DW_AT_GNU_call_site_value for " | |
9954 | "DW_TAG_GNU_call_site child DIE 0x%x [in module %s]"), | |
b64f50a1 | 9955 | child_die->offset.sect_off, objfile->name); |
96408a79 SA |
9956 | continue; |
9957 | } | |
9958 | parameter->value = DW_BLOCK (attr)->data; | |
9959 | parameter->value_size = DW_BLOCK (attr)->size; | |
9960 | ||
9961 | /* Parameters are not pre-cleared by memset above. */ | |
9962 | parameter->data_value = NULL; | |
9963 | parameter->data_value_size = 0; | |
9964 | call_site->parameter_count++; | |
9965 | ||
9966 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_data_value, cu); | |
9967 | if (attr) | |
9968 | { | |
9969 | if (!attr_form_is_block (attr)) | |
9970 | complaint (&symfile_complaints, | |
9971 | _("No DW_FORM_block* DW_AT_GNU_call_site_data_value for " | |
9972 | "DW_TAG_GNU_call_site child DIE 0x%x [in module %s]"), | |
b64f50a1 | 9973 | child_die->offset.sect_off, objfile->name); |
96408a79 SA |
9974 | else |
9975 | { | |
9976 | parameter->data_value = DW_BLOCK (attr)->data; | |
9977 | parameter->data_value_size = DW_BLOCK (attr)->size; | |
9978 | } | |
9979 | } | |
9980 | } | |
9981 | } | |
9982 | ||
43039443 | 9983 | /* Get low and high pc attributes from DW_AT_ranges attribute value OFFSET. |
ff013f42 JK |
9984 | Return 1 if the attributes are present and valid, otherwise, return 0. |
9985 | If RANGES_PST is not NULL we should setup `objfile->psymtabs_addrmap'. */ | |
43039443 JK |
9986 | |
9987 | static int | |
9988 | dwarf2_ranges_read (unsigned offset, CORE_ADDR *low_return, | |
ff013f42 JK |
9989 | CORE_ADDR *high_return, struct dwarf2_cu *cu, |
9990 | struct partial_symtab *ranges_pst) | |
43039443 JK |
9991 | { |
9992 | struct objfile *objfile = cu->objfile; | |
9993 | struct comp_unit_head *cu_header = &cu->header; | |
9994 | bfd *obfd = objfile->obfd; | |
9995 | unsigned int addr_size = cu_header->addr_size; | |
9996 | CORE_ADDR mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
9997 | /* Base address selection entry. */ | |
9998 | CORE_ADDR base; | |
9999 | int found_base; | |
10000 | unsigned int dummy; | |
10001 | gdb_byte *buffer; | |
10002 | CORE_ADDR marker; | |
10003 | int low_set; | |
10004 | CORE_ADDR low = 0; | |
10005 | CORE_ADDR high = 0; | |
ff013f42 | 10006 | CORE_ADDR baseaddr; |
43039443 | 10007 | |
d00adf39 DE |
10008 | found_base = cu->base_known; |
10009 | base = cu->base_address; | |
43039443 | 10010 | |
be391dca | 10011 | dwarf2_read_section (objfile, &dwarf2_per_objfile->ranges); |
dce234bc | 10012 | if (offset >= dwarf2_per_objfile->ranges.size) |
43039443 JK |
10013 | { |
10014 | complaint (&symfile_complaints, | |
10015 | _("Offset %d out of bounds for DW_AT_ranges attribute"), | |
10016 | offset); | |
10017 | return 0; | |
10018 | } | |
dce234bc | 10019 | buffer = dwarf2_per_objfile->ranges.buffer + offset; |
43039443 JK |
10020 | |
10021 | /* Read in the largest possible address. */ | |
10022 | marker = read_address (obfd, buffer, cu, &dummy); | |
10023 | if ((marker & mask) == mask) | |
10024 | { | |
10025 | /* If we found the largest possible address, then | |
10026 | read the base address. */ | |
10027 | base = read_address (obfd, buffer + addr_size, cu, &dummy); | |
10028 | buffer += 2 * addr_size; | |
10029 | offset += 2 * addr_size; | |
10030 | found_base = 1; | |
10031 | } | |
10032 | ||
10033 | low_set = 0; | |
10034 | ||
e7030f15 | 10035 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
ff013f42 | 10036 | |
43039443 JK |
10037 | while (1) |
10038 | { | |
10039 | CORE_ADDR range_beginning, range_end; | |
10040 | ||
10041 | range_beginning = read_address (obfd, buffer, cu, &dummy); | |
10042 | buffer += addr_size; | |
10043 | range_end = read_address (obfd, buffer, cu, &dummy); | |
10044 | buffer += addr_size; | |
10045 | offset += 2 * addr_size; | |
10046 | ||
10047 | /* An end of list marker is a pair of zero addresses. */ | |
10048 | if (range_beginning == 0 && range_end == 0) | |
10049 | /* Found the end of list entry. */ | |
10050 | break; | |
10051 | ||
10052 | /* Each base address selection entry is a pair of 2 values. | |
10053 | The first is the largest possible address, the second is | |
10054 | the base address. Check for a base address here. */ | |
10055 | if ((range_beginning & mask) == mask) | |
10056 | { | |
10057 | /* If we found the largest possible address, then | |
10058 | read the base address. */ | |
10059 | base = read_address (obfd, buffer + addr_size, cu, &dummy); | |
10060 | found_base = 1; | |
10061 | continue; | |
10062 | } | |
10063 | ||
10064 | if (!found_base) | |
10065 | { | |
10066 | /* We have no valid base address for the ranges | |
10067 | data. */ | |
10068 | complaint (&symfile_complaints, | |
10069 | _("Invalid .debug_ranges data (no base address)")); | |
10070 | return 0; | |
10071 | } | |
10072 | ||
9277c30c UW |
10073 | if (range_beginning > range_end) |
10074 | { | |
10075 | /* Inverted range entries are invalid. */ | |
10076 | complaint (&symfile_complaints, | |
10077 | _("Invalid .debug_ranges data (inverted range)")); | |
10078 | return 0; | |
10079 | } | |
10080 | ||
10081 | /* Empty range entries have no effect. */ | |
10082 | if (range_beginning == range_end) | |
10083 | continue; | |
10084 | ||
43039443 JK |
10085 | range_beginning += base; |
10086 | range_end += base; | |
10087 | ||
01093045 DE |
10088 | /* A not-uncommon case of bad debug info. |
10089 | Don't pollute the addrmap with bad data. */ | |
10090 | if (range_beginning + baseaddr == 0 | |
10091 | && !dwarf2_per_objfile->has_section_at_zero) | |
10092 | { | |
10093 | complaint (&symfile_complaints, | |
10094 | _(".debug_ranges entry has start address of zero" | |
10095 | " [in module %s]"), objfile->name); | |
10096 | continue; | |
10097 | } | |
10098 | ||
9277c30c | 10099 | if (ranges_pst != NULL) |
ff013f42 | 10100 | addrmap_set_empty (objfile->psymtabs_addrmap, |
3e43a32a MS |
10101 | range_beginning + baseaddr, |
10102 | range_end - 1 + baseaddr, | |
ff013f42 JK |
10103 | ranges_pst); |
10104 | ||
43039443 JK |
10105 | /* FIXME: This is recording everything as a low-high |
10106 | segment of consecutive addresses. We should have a | |
10107 | data structure for discontiguous block ranges | |
10108 | instead. */ | |
10109 | if (! low_set) | |
10110 | { | |
10111 | low = range_beginning; | |
10112 | high = range_end; | |
10113 | low_set = 1; | |
10114 | } | |
10115 | else | |
10116 | { | |
10117 | if (range_beginning < low) | |
10118 | low = range_beginning; | |
10119 | if (range_end > high) | |
10120 | high = range_end; | |
10121 | } | |
10122 | } | |
10123 | ||
10124 | if (! low_set) | |
10125 | /* If the first entry is an end-of-list marker, the range | |
10126 | describes an empty scope, i.e. no instructions. */ | |
10127 | return 0; | |
10128 | ||
10129 | if (low_return) | |
10130 | *low_return = low; | |
10131 | if (high_return) | |
10132 | *high_return = high; | |
10133 | return 1; | |
10134 | } | |
10135 | ||
af34e669 DJ |
10136 | /* Get low and high pc attributes from a die. Return 1 if the attributes |
10137 | are present and valid, otherwise, return 0. Return -1 if the range is | |
10138 | discontinuous, i.e. derived from DW_AT_ranges information. */ | |
380bca97 | 10139 | |
c906108c | 10140 | static int |
af34e669 | 10141 | dwarf2_get_pc_bounds (struct die_info *die, CORE_ADDR *lowpc, |
d85a05f0 DJ |
10142 | CORE_ADDR *highpc, struct dwarf2_cu *cu, |
10143 | struct partial_symtab *pst) | |
c906108c SS |
10144 | { |
10145 | struct attribute *attr; | |
91da1414 | 10146 | struct attribute *attr_high; |
af34e669 DJ |
10147 | CORE_ADDR low = 0; |
10148 | CORE_ADDR high = 0; | |
10149 | int ret = 0; | |
c906108c | 10150 | |
91da1414 MW |
10151 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
10152 | if (attr_high) | |
af34e669 | 10153 | { |
e142c38c | 10154 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
af34e669 | 10155 | if (attr) |
91da1414 MW |
10156 | { |
10157 | low = DW_ADDR (attr); | |
3019eac3 DE |
10158 | if (attr_high->form == DW_FORM_addr |
10159 | || attr_high->form == DW_FORM_GNU_addr_index) | |
91da1414 MW |
10160 | high = DW_ADDR (attr_high); |
10161 | else | |
10162 | high = low + DW_UNSND (attr_high); | |
10163 | } | |
af34e669 DJ |
10164 | else |
10165 | /* Found high w/o low attribute. */ | |
10166 | return 0; | |
10167 | ||
10168 | /* Found consecutive range of addresses. */ | |
10169 | ret = 1; | |
10170 | } | |
c906108c | 10171 | else |
af34e669 | 10172 | { |
e142c38c | 10173 | attr = dwarf2_attr (die, DW_AT_ranges, cu); |
af34e669 DJ |
10174 | if (attr != NULL) |
10175 | { | |
ab435259 DE |
10176 | /* DW_AT_ranges_base does not apply to DIEs from the DWO skeleton. |
10177 | We take advantage of the fact that DW_AT_ranges does not appear | |
10178 | in DW_TAG_compile_unit of DWO files. */ | |
10179 | int need_ranges_base = die->tag != DW_TAG_compile_unit; | |
10180 | unsigned int ranges_offset = (DW_UNSND (attr) | |
10181 | + (need_ranges_base | |
10182 | ? cu->ranges_base | |
10183 | : 0)); | |
2e3cf129 | 10184 | |
af34e669 | 10185 | /* Value of the DW_AT_ranges attribute is the offset in the |
a604369a | 10186 | .debug_ranges section. */ |
2e3cf129 | 10187 | if (!dwarf2_ranges_read (ranges_offset, &low, &high, cu, pst)) |
af34e669 | 10188 | return 0; |
43039443 | 10189 | /* Found discontinuous range of addresses. */ |
af34e669 DJ |
10190 | ret = -1; |
10191 | } | |
10192 | } | |
c906108c | 10193 | |
9373cf26 JK |
10194 | /* read_partial_die has also the strict LOW < HIGH requirement. */ |
10195 | if (high <= low) | |
c906108c SS |
10196 | return 0; |
10197 | ||
10198 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
10199 | eliminate duplicate copies of functions and vtables and such. | |
10200 | The linker will arbitrarily choose one and discard the others. | |
10201 | The AT_*_pc values for such functions refer to local labels in | |
10202 | these sections. If the section from that file was discarded, the | |
10203 | labels are not in the output, so the relocs get a value of 0. | |
10204 | If this is a discarded function, mark the pc bounds as invalid, | |
10205 | so that GDB will ignore it. */ | |
72dca2f5 | 10206 | if (low == 0 && !dwarf2_per_objfile->has_section_at_zero) |
c906108c SS |
10207 | return 0; |
10208 | ||
10209 | *lowpc = low; | |
96408a79 SA |
10210 | if (highpc) |
10211 | *highpc = high; | |
af34e669 | 10212 | return ret; |
c906108c SS |
10213 | } |
10214 | ||
b084d499 JB |
10215 | /* Assuming that DIE represents a subprogram DIE or a lexical block, get |
10216 | its low and high PC addresses. Do nothing if these addresses could not | |
10217 | be determined. Otherwise, set LOWPC to the low address if it is smaller, | |
10218 | and HIGHPC to the high address if greater than HIGHPC. */ | |
10219 | ||
10220 | static void | |
10221 | dwarf2_get_subprogram_pc_bounds (struct die_info *die, | |
10222 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
10223 | struct dwarf2_cu *cu) | |
10224 | { | |
10225 | CORE_ADDR low, high; | |
10226 | struct die_info *child = die->child; | |
10227 | ||
d85a05f0 | 10228 | if (dwarf2_get_pc_bounds (die, &low, &high, cu, NULL)) |
b084d499 JB |
10229 | { |
10230 | *lowpc = min (*lowpc, low); | |
10231 | *highpc = max (*highpc, high); | |
10232 | } | |
10233 | ||
10234 | /* If the language does not allow nested subprograms (either inside | |
10235 | subprograms or lexical blocks), we're done. */ | |
10236 | if (cu->language != language_ada) | |
10237 | return; | |
6e70227d | 10238 | |
b084d499 JB |
10239 | /* Check all the children of the given DIE. If it contains nested |
10240 | subprograms, then check their pc bounds. Likewise, we need to | |
10241 | check lexical blocks as well, as they may also contain subprogram | |
10242 | definitions. */ | |
10243 | while (child && child->tag) | |
10244 | { | |
10245 | if (child->tag == DW_TAG_subprogram | |
10246 | || child->tag == DW_TAG_lexical_block) | |
10247 | dwarf2_get_subprogram_pc_bounds (child, lowpc, highpc, cu); | |
10248 | child = sibling_die (child); | |
10249 | } | |
10250 | } | |
10251 | ||
fae299cd DC |
10252 | /* Get the low and high pc's represented by the scope DIE, and store |
10253 | them in *LOWPC and *HIGHPC. If the correct values can't be | |
10254 | determined, set *LOWPC to -1 and *HIGHPC to 0. */ | |
10255 | ||
10256 | static void | |
10257 | get_scope_pc_bounds (struct die_info *die, | |
10258 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
10259 | struct dwarf2_cu *cu) | |
10260 | { | |
10261 | CORE_ADDR best_low = (CORE_ADDR) -1; | |
10262 | CORE_ADDR best_high = (CORE_ADDR) 0; | |
10263 | CORE_ADDR current_low, current_high; | |
10264 | ||
d85a05f0 | 10265 | if (dwarf2_get_pc_bounds (die, ¤t_low, ¤t_high, cu, NULL)) |
fae299cd DC |
10266 | { |
10267 | best_low = current_low; | |
10268 | best_high = current_high; | |
10269 | } | |
10270 | else | |
10271 | { | |
10272 | struct die_info *child = die->child; | |
10273 | ||
10274 | while (child && child->tag) | |
10275 | { | |
10276 | switch (child->tag) { | |
10277 | case DW_TAG_subprogram: | |
b084d499 | 10278 | dwarf2_get_subprogram_pc_bounds (child, &best_low, &best_high, cu); |
fae299cd DC |
10279 | break; |
10280 | case DW_TAG_namespace: | |
f55ee35c | 10281 | case DW_TAG_module: |
fae299cd DC |
10282 | /* FIXME: carlton/2004-01-16: Should we do this for |
10283 | DW_TAG_class_type/DW_TAG_structure_type, too? I think | |
10284 | that current GCC's always emit the DIEs corresponding | |
10285 | to definitions of methods of classes as children of a | |
10286 | DW_TAG_compile_unit or DW_TAG_namespace (as opposed to | |
10287 | the DIEs giving the declarations, which could be | |
10288 | anywhere). But I don't see any reason why the | |
10289 | standards says that they have to be there. */ | |
10290 | get_scope_pc_bounds (child, ¤t_low, ¤t_high, cu); | |
10291 | ||
10292 | if (current_low != ((CORE_ADDR) -1)) | |
10293 | { | |
10294 | best_low = min (best_low, current_low); | |
10295 | best_high = max (best_high, current_high); | |
10296 | } | |
10297 | break; | |
10298 | default: | |
0963b4bd | 10299 | /* Ignore. */ |
fae299cd DC |
10300 | break; |
10301 | } | |
10302 | ||
10303 | child = sibling_die (child); | |
10304 | } | |
10305 | } | |
10306 | ||
10307 | *lowpc = best_low; | |
10308 | *highpc = best_high; | |
10309 | } | |
10310 | ||
801e3a5b JB |
10311 | /* Record the address ranges for BLOCK, offset by BASEADDR, as given |
10312 | in DIE. */ | |
380bca97 | 10313 | |
801e3a5b JB |
10314 | static void |
10315 | dwarf2_record_block_ranges (struct die_info *die, struct block *block, | |
10316 | CORE_ADDR baseaddr, struct dwarf2_cu *cu) | |
10317 | { | |
bb5ed363 | 10318 | struct objfile *objfile = cu->objfile; |
801e3a5b | 10319 | struct attribute *attr; |
91da1414 | 10320 | struct attribute *attr_high; |
801e3a5b | 10321 | |
91da1414 MW |
10322 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
10323 | if (attr_high) | |
801e3a5b | 10324 | { |
801e3a5b JB |
10325 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
10326 | if (attr) | |
10327 | { | |
10328 | CORE_ADDR low = DW_ADDR (attr); | |
91da1414 | 10329 | CORE_ADDR high; |
3019eac3 DE |
10330 | if (attr_high->form == DW_FORM_addr |
10331 | || attr_high->form == DW_FORM_GNU_addr_index) | |
91da1414 MW |
10332 | high = DW_ADDR (attr_high); |
10333 | else | |
10334 | high = low + DW_UNSND (attr_high); | |
9a619af0 | 10335 | |
801e3a5b JB |
10336 | record_block_range (block, baseaddr + low, baseaddr + high - 1); |
10337 | } | |
10338 | } | |
10339 | ||
10340 | attr = dwarf2_attr (die, DW_AT_ranges, cu); | |
10341 | if (attr) | |
10342 | { | |
bb5ed363 | 10343 | bfd *obfd = objfile->obfd; |
ab435259 DE |
10344 | /* DW_AT_ranges_base does not apply to DIEs from the DWO skeleton. |
10345 | We take advantage of the fact that DW_AT_ranges does not appear | |
10346 | in DW_TAG_compile_unit of DWO files. */ | |
10347 | int need_ranges_base = die->tag != DW_TAG_compile_unit; | |
801e3a5b JB |
10348 | |
10349 | /* The value of the DW_AT_ranges attribute is the offset of the | |
10350 | address range list in the .debug_ranges section. */ | |
ab435259 DE |
10351 | unsigned long offset = (DW_UNSND (attr) |
10352 | + (need_ranges_base ? cu->ranges_base : 0)); | |
dce234bc | 10353 | gdb_byte *buffer = dwarf2_per_objfile->ranges.buffer + offset; |
801e3a5b JB |
10354 | |
10355 | /* For some target architectures, but not others, the | |
10356 | read_address function sign-extends the addresses it returns. | |
10357 | To recognize base address selection entries, we need a | |
10358 | mask. */ | |
10359 | unsigned int addr_size = cu->header.addr_size; | |
10360 | CORE_ADDR base_select_mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
10361 | ||
10362 | /* The base address, to which the next pair is relative. Note | |
10363 | that this 'base' is a DWARF concept: most entries in a range | |
10364 | list are relative, to reduce the number of relocs against the | |
10365 | debugging information. This is separate from this function's | |
10366 | 'baseaddr' argument, which GDB uses to relocate debugging | |
10367 | information from a shared library based on the address at | |
10368 | which the library was loaded. */ | |
d00adf39 DE |
10369 | CORE_ADDR base = cu->base_address; |
10370 | int base_known = cu->base_known; | |
801e3a5b | 10371 | |
be391dca | 10372 | gdb_assert (dwarf2_per_objfile->ranges.readin); |
dce234bc | 10373 | if (offset >= dwarf2_per_objfile->ranges.size) |
801e3a5b JB |
10374 | { |
10375 | complaint (&symfile_complaints, | |
10376 | _("Offset %lu out of bounds for DW_AT_ranges attribute"), | |
10377 | offset); | |
10378 | return; | |
10379 | } | |
10380 | ||
10381 | for (;;) | |
10382 | { | |
10383 | unsigned int bytes_read; | |
10384 | CORE_ADDR start, end; | |
10385 | ||
10386 | start = read_address (obfd, buffer, cu, &bytes_read); | |
10387 | buffer += bytes_read; | |
10388 | end = read_address (obfd, buffer, cu, &bytes_read); | |
10389 | buffer += bytes_read; | |
10390 | ||
10391 | /* Did we find the end of the range list? */ | |
10392 | if (start == 0 && end == 0) | |
10393 | break; | |
10394 | ||
10395 | /* Did we find a base address selection entry? */ | |
10396 | else if ((start & base_select_mask) == base_select_mask) | |
10397 | { | |
10398 | base = end; | |
10399 | base_known = 1; | |
10400 | } | |
10401 | ||
10402 | /* We found an ordinary address range. */ | |
10403 | else | |
10404 | { | |
10405 | if (!base_known) | |
10406 | { | |
10407 | complaint (&symfile_complaints, | |
3e43a32a MS |
10408 | _("Invalid .debug_ranges data " |
10409 | "(no base address)")); | |
801e3a5b JB |
10410 | return; |
10411 | } | |
10412 | ||
9277c30c UW |
10413 | if (start > end) |
10414 | { | |
10415 | /* Inverted range entries are invalid. */ | |
10416 | complaint (&symfile_complaints, | |
10417 | _("Invalid .debug_ranges data " | |
10418 | "(inverted range)")); | |
10419 | return; | |
10420 | } | |
10421 | ||
10422 | /* Empty range entries have no effect. */ | |
10423 | if (start == end) | |
10424 | continue; | |
10425 | ||
01093045 DE |
10426 | start += base + baseaddr; |
10427 | end += base + baseaddr; | |
10428 | ||
10429 | /* A not-uncommon case of bad debug info. | |
10430 | Don't pollute the addrmap with bad data. */ | |
10431 | if (start == 0 && !dwarf2_per_objfile->has_section_at_zero) | |
10432 | { | |
10433 | complaint (&symfile_complaints, | |
10434 | _(".debug_ranges entry has start address of zero" | |
10435 | " [in module %s]"), objfile->name); | |
10436 | continue; | |
10437 | } | |
10438 | ||
10439 | record_block_range (block, start, end - 1); | |
801e3a5b JB |
10440 | } |
10441 | } | |
10442 | } | |
10443 | } | |
10444 | ||
685b1105 JK |
10445 | /* Check whether the producer field indicates either of GCC < 4.6, or the |
10446 | Intel C/C++ compiler, and cache the result in CU. */ | |
60d5a603 | 10447 | |
685b1105 JK |
10448 | static void |
10449 | check_producer (struct dwarf2_cu *cu) | |
60d5a603 JK |
10450 | { |
10451 | const char *cs; | |
10452 | int major, minor, release; | |
10453 | ||
10454 | if (cu->producer == NULL) | |
10455 | { | |
10456 | /* For unknown compilers expect their behavior is DWARF version | |
10457 | compliant. | |
10458 | ||
10459 | GCC started to support .debug_types sections by -gdwarf-4 since | |
10460 | gcc-4.5.x. As the .debug_types sections are missing DW_AT_producer | |
10461 | for their space efficiency GDB cannot workaround gcc-4.5.x -gdwarf-4 | |
10462 | combination. gcc-4.5.x -gdwarf-4 binaries have DW_AT_accessibility | |
10463 | interpreted incorrectly by GDB now - GCC PR debug/48229. */ | |
60d5a603 | 10464 | } |
685b1105 | 10465 | else if (strncmp (cu->producer, "GNU ", strlen ("GNU ")) == 0) |
60d5a603 | 10466 | { |
685b1105 JK |
10467 | /* Skip any identifier after "GNU " - such as "C++" or "Java". */ |
10468 | ||
ba919b58 TT |
10469 | cs = &cu->producer[strlen ("GNU ")]; |
10470 | while (*cs && !isdigit (*cs)) | |
10471 | cs++; | |
10472 | if (sscanf (cs, "%d.%d.%d", &major, &minor, &release) != 3) | |
10473 | { | |
10474 | /* Not recognized as GCC. */ | |
10475 | } | |
10476 | else | |
1b80a9fa JK |
10477 | { |
10478 | cu->producer_is_gxx_lt_4_6 = major < 4 || (major == 4 && minor < 6); | |
10479 | cu->producer_is_gcc_lt_4_3 = major < 4 || (major == 4 && minor < 3); | |
10480 | } | |
685b1105 JK |
10481 | } |
10482 | else if (strncmp (cu->producer, "Intel(R) C", strlen ("Intel(R) C")) == 0) | |
10483 | cu->producer_is_icc = 1; | |
10484 | else | |
10485 | { | |
10486 | /* For other non-GCC compilers, expect their behavior is DWARF version | |
10487 | compliant. */ | |
60d5a603 JK |
10488 | } |
10489 | ||
ba919b58 | 10490 | cu->checked_producer = 1; |
685b1105 | 10491 | } |
ba919b58 | 10492 | |
685b1105 JK |
10493 | /* Check for GCC PR debug/45124 fix which is not present in any G++ version up |
10494 | to 4.5.any while it is present already in G++ 4.6.0 - the PR has been fixed | |
10495 | during 4.6.0 experimental. */ | |
10496 | ||
10497 | static int | |
10498 | producer_is_gxx_lt_4_6 (struct dwarf2_cu *cu) | |
10499 | { | |
10500 | if (!cu->checked_producer) | |
10501 | check_producer (cu); | |
10502 | ||
10503 | return cu->producer_is_gxx_lt_4_6; | |
60d5a603 JK |
10504 | } |
10505 | ||
10506 | /* Return the default accessibility type if it is not overriden by | |
10507 | DW_AT_accessibility. */ | |
10508 | ||
10509 | static enum dwarf_access_attribute | |
10510 | dwarf2_default_access_attribute (struct die_info *die, struct dwarf2_cu *cu) | |
10511 | { | |
10512 | if (cu->header.version < 3 || producer_is_gxx_lt_4_6 (cu)) | |
10513 | { | |
10514 | /* The default DWARF 2 accessibility for members is public, the default | |
10515 | accessibility for inheritance is private. */ | |
10516 | ||
10517 | if (die->tag != DW_TAG_inheritance) | |
10518 | return DW_ACCESS_public; | |
10519 | else | |
10520 | return DW_ACCESS_private; | |
10521 | } | |
10522 | else | |
10523 | { | |
10524 | /* DWARF 3+ defines the default accessibility a different way. The same | |
10525 | rules apply now for DW_TAG_inheritance as for the members and it only | |
10526 | depends on the container kind. */ | |
10527 | ||
10528 | if (die->parent->tag == DW_TAG_class_type) | |
10529 | return DW_ACCESS_private; | |
10530 | else | |
10531 | return DW_ACCESS_public; | |
10532 | } | |
10533 | } | |
10534 | ||
74ac6d43 TT |
10535 | /* Look for DW_AT_data_member_location. Set *OFFSET to the byte |
10536 | offset. If the attribute was not found return 0, otherwise return | |
10537 | 1. If it was found but could not properly be handled, set *OFFSET | |
10538 | to 0. */ | |
10539 | ||
10540 | static int | |
10541 | handle_data_member_location (struct die_info *die, struct dwarf2_cu *cu, | |
10542 | LONGEST *offset) | |
10543 | { | |
10544 | struct attribute *attr; | |
10545 | ||
10546 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); | |
10547 | if (attr != NULL) | |
10548 | { | |
10549 | *offset = 0; | |
10550 | ||
10551 | /* Note that we do not check for a section offset first here. | |
10552 | This is because DW_AT_data_member_location is new in DWARF 4, | |
10553 | so if we see it, we can assume that a constant form is really | |
10554 | a constant and not a section offset. */ | |
10555 | if (attr_form_is_constant (attr)) | |
10556 | *offset = dwarf2_get_attr_constant_value (attr, 0); | |
10557 | else if (attr_form_is_section_offset (attr)) | |
10558 | dwarf2_complex_location_expr_complaint (); | |
10559 | else if (attr_form_is_block (attr)) | |
10560 | *offset = decode_locdesc (DW_BLOCK (attr), cu); | |
10561 | else | |
10562 | dwarf2_complex_location_expr_complaint (); | |
10563 | ||
10564 | return 1; | |
10565 | } | |
10566 | ||
10567 | return 0; | |
10568 | } | |
10569 | ||
c906108c SS |
10570 | /* Add an aggregate field to the field list. */ |
10571 | ||
10572 | static void | |
107d2387 | 10573 | dwarf2_add_field (struct field_info *fip, struct die_info *die, |
e7c27a73 | 10574 | struct dwarf2_cu *cu) |
6e70227d | 10575 | { |
e7c27a73 | 10576 | struct objfile *objfile = cu->objfile; |
5e2b427d | 10577 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
10578 | struct nextfield *new_field; |
10579 | struct attribute *attr; | |
10580 | struct field *fp; | |
15d034d0 | 10581 | const char *fieldname = ""; |
c906108c SS |
10582 | |
10583 | /* Allocate a new field list entry and link it in. */ | |
10584 | new_field = (struct nextfield *) xmalloc (sizeof (struct nextfield)); | |
b8c9b27d | 10585 | make_cleanup (xfree, new_field); |
c906108c | 10586 | memset (new_field, 0, sizeof (struct nextfield)); |
7d0ccb61 DJ |
10587 | |
10588 | if (die->tag == DW_TAG_inheritance) | |
10589 | { | |
10590 | new_field->next = fip->baseclasses; | |
10591 | fip->baseclasses = new_field; | |
10592 | } | |
10593 | else | |
10594 | { | |
10595 | new_field->next = fip->fields; | |
10596 | fip->fields = new_field; | |
10597 | } | |
c906108c SS |
10598 | fip->nfields++; |
10599 | ||
e142c38c | 10600 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c SS |
10601 | if (attr) |
10602 | new_field->accessibility = DW_UNSND (attr); | |
60d5a603 JK |
10603 | else |
10604 | new_field->accessibility = dwarf2_default_access_attribute (die, cu); | |
c906108c SS |
10605 | if (new_field->accessibility != DW_ACCESS_public) |
10606 | fip->non_public_fields = 1; | |
60d5a603 | 10607 | |
e142c38c | 10608 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); |
c906108c SS |
10609 | if (attr) |
10610 | new_field->virtuality = DW_UNSND (attr); | |
60d5a603 JK |
10611 | else |
10612 | new_field->virtuality = DW_VIRTUALITY_none; | |
c906108c SS |
10613 | |
10614 | fp = &new_field->field; | |
a9a9bd0f | 10615 | |
e142c38c | 10616 | if (die->tag == DW_TAG_member && ! die_is_declaration (die, cu)) |
c906108c | 10617 | { |
74ac6d43 TT |
10618 | LONGEST offset; |
10619 | ||
a9a9bd0f | 10620 | /* Data member other than a C++ static data member. */ |
6e70227d | 10621 | |
c906108c | 10622 | /* Get type of field. */ |
e7c27a73 | 10623 | fp->type = die_type (die, cu); |
c906108c | 10624 | |
d6a843b5 | 10625 | SET_FIELD_BITPOS (*fp, 0); |
01ad7f36 | 10626 | |
c906108c | 10627 | /* Get bit size of field (zero if none). */ |
e142c38c | 10628 | attr = dwarf2_attr (die, DW_AT_bit_size, cu); |
c906108c SS |
10629 | if (attr) |
10630 | { | |
10631 | FIELD_BITSIZE (*fp) = DW_UNSND (attr); | |
10632 | } | |
10633 | else | |
10634 | { | |
10635 | FIELD_BITSIZE (*fp) = 0; | |
10636 | } | |
10637 | ||
10638 | /* Get bit offset of field. */ | |
74ac6d43 TT |
10639 | if (handle_data_member_location (die, cu, &offset)) |
10640 | SET_FIELD_BITPOS (*fp, offset * bits_per_byte); | |
e142c38c | 10641 | attr = dwarf2_attr (die, DW_AT_bit_offset, cu); |
c906108c SS |
10642 | if (attr) |
10643 | { | |
5e2b427d | 10644 | if (gdbarch_bits_big_endian (gdbarch)) |
c906108c SS |
10645 | { |
10646 | /* For big endian bits, the DW_AT_bit_offset gives the | |
c5aa993b JM |
10647 | additional bit offset from the MSB of the containing |
10648 | anonymous object to the MSB of the field. We don't | |
10649 | have to do anything special since we don't need to | |
10650 | know the size of the anonymous object. */ | |
f41f5e61 | 10651 | SET_FIELD_BITPOS (*fp, FIELD_BITPOS (*fp) + DW_UNSND (attr)); |
c906108c SS |
10652 | } |
10653 | else | |
10654 | { | |
10655 | /* For little endian bits, compute the bit offset to the | |
c5aa993b JM |
10656 | MSB of the anonymous object, subtract off the number of |
10657 | bits from the MSB of the field to the MSB of the | |
10658 | object, and then subtract off the number of bits of | |
10659 | the field itself. The result is the bit offset of | |
10660 | the LSB of the field. */ | |
c906108c SS |
10661 | int anonymous_size; |
10662 | int bit_offset = DW_UNSND (attr); | |
10663 | ||
e142c38c | 10664 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
10665 | if (attr) |
10666 | { | |
10667 | /* The size of the anonymous object containing | |
10668 | the bit field is explicit, so use the | |
10669 | indicated size (in bytes). */ | |
10670 | anonymous_size = DW_UNSND (attr); | |
10671 | } | |
10672 | else | |
10673 | { | |
10674 | /* The size of the anonymous object containing | |
10675 | the bit field must be inferred from the type | |
10676 | attribute of the data member containing the | |
10677 | bit field. */ | |
10678 | anonymous_size = TYPE_LENGTH (fp->type); | |
10679 | } | |
f41f5e61 PA |
10680 | SET_FIELD_BITPOS (*fp, |
10681 | (FIELD_BITPOS (*fp) | |
10682 | + anonymous_size * bits_per_byte | |
10683 | - bit_offset - FIELD_BITSIZE (*fp))); | |
c906108c SS |
10684 | } |
10685 | } | |
10686 | ||
10687 | /* Get name of field. */ | |
39cbfefa DJ |
10688 | fieldname = dwarf2_name (die, cu); |
10689 | if (fieldname == NULL) | |
10690 | fieldname = ""; | |
d8151005 DJ |
10691 | |
10692 | /* The name is already allocated along with this objfile, so we don't | |
10693 | need to duplicate it for the type. */ | |
10694 | fp->name = fieldname; | |
c906108c SS |
10695 | |
10696 | /* Change accessibility for artificial fields (e.g. virtual table | |
c5aa993b | 10697 | pointer or virtual base class pointer) to private. */ |
e142c38c | 10698 | if (dwarf2_attr (die, DW_AT_artificial, cu)) |
c906108c | 10699 | { |
d48cc9dd | 10700 | FIELD_ARTIFICIAL (*fp) = 1; |
c906108c SS |
10701 | new_field->accessibility = DW_ACCESS_private; |
10702 | fip->non_public_fields = 1; | |
10703 | } | |
10704 | } | |
a9a9bd0f | 10705 | else if (die->tag == DW_TAG_member || die->tag == DW_TAG_variable) |
c906108c | 10706 | { |
a9a9bd0f DC |
10707 | /* C++ static member. */ |
10708 | ||
10709 | /* NOTE: carlton/2002-11-05: It should be a DW_TAG_member that | |
10710 | is a declaration, but all versions of G++ as of this writing | |
10711 | (so through at least 3.2.1) incorrectly generate | |
10712 | DW_TAG_variable tags. */ | |
6e70227d | 10713 | |
ff355380 | 10714 | const char *physname; |
c906108c | 10715 | |
a9a9bd0f | 10716 | /* Get name of field. */ |
39cbfefa DJ |
10717 | fieldname = dwarf2_name (die, cu); |
10718 | if (fieldname == NULL) | |
c906108c SS |
10719 | return; |
10720 | ||
254e6b9e | 10721 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
3863f96c DE |
10722 | if (attr |
10723 | /* Only create a symbol if this is an external value. | |
10724 | new_symbol checks this and puts the value in the global symbol | |
10725 | table, which we want. If it is not external, new_symbol | |
10726 | will try to put the value in cu->list_in_scope which is wrong. */ | |
10727 | && dwarf2_flag_true_p (die, DW_AT_external, cu)) | |
254e6b9e DE |
10728 | { |
10729 | /* A static const member, not much different than an enum as far as | |
10730 | we're concerned, except that we can support more types. */ | |
10731 | new_symbol (die, NULL, cu); | |
10732 | } | |
10733 | ||
2df3850c | 10734 | /* Get physical name. */ |
ff355380 | 10735 | physname = dwarf2_physname (fieldname, die, cu); |
c906108c | 10736 | |
d8151005 DJ |
10737 | /* The name is already allocated along with this objfile, so we don't |
10738 | need to duplicate it for the type. */ | |
10739 | SET_FIELD_PHYSNAME (*fp, physname ? physname : ""); | |
e7c27a73 | 10740 | FIELD_TYPE (*fp) = die_type (die, cu); |
d8151005 | 10741 | FIELD_NAME (*fp) = fieldname; |
c906108c SS |
10742 | } |
10743 | else if (die->tag == DW_TAG_inheritance) | |
10744 | { | |
74ac6d43 | 10745 | LONGEST offset; |
d4b96c9a | 10746 | |
74ac6d43 TT |
10747 | /* C++ base class field. */ |
10748 | if (handle_data_member_location (die, cu, &offset)) | |
10749 | SET_FIELD_BITPOS (*fp, offset * bits_per_byte); | |
c906108c | 10750 | FIELD_BITSIZE (*fp) = 0; |
e7c27a73 | 10751 | FIELD_TYPE (*fp) = die_type (die, cu); |
c906108c SS |
10752 | FIELD_NAME (*fp) = type_name_no_tag (fp->type); |
10753 | fip->nbaseclasses++; | |
10754 | } | |
10755 | } | |
10756 | ||
98751a41 JK |
10757 | /* Add a typedef defined in the scope of the FIP's class. */ |
10758 | ||
10759 | static void | |
10760 | dwarf2_add_typedef (struct field_info *fip, struct die_info *die, | |
10761 | struct dwarf2_cu *cu) | |
6e70227d | 10762 | { |
98751a41 | 10763 | struct objfile *objfile = cu->objfile; |
98751a41 JK |
10764 | struct typedef_field_list *new_field; |
10765 | struct attribute *attr; | |
10766 | struct typedef_field *fp; | |
10767 | char *fieldname = ""; | |
10768 | ||
10769 | /* Allocate a new field list entry and link it in. */ | |
10770 | new_field = xzalloc (sizeof (*new_field)); | |
10771 | make_cleanup (xfree, new_field); | |
10772 | ||
10773 | gdb_assert (die->tag == DW_TAG_typedef); | |
10774 | ||
10775 | fp = &new_field->field; | |
10776 | ||
10777 | /* Get name of field. */ | |
10778 | fp->name = dwarf2_name (die, cu); | |
10779 | if (fp->name == NULL) | |
10780 | return; | |
10781 | ||
10782 | fp->type = read_type_die (die, cu); | |
10783 | ||
10784 | new_field->next = fip->typedef_field_list; | |
10785 | fip->typedef_field_list = new_field; | |
10786 | fip->typedef_field_list_count++; | |
10787 | } | |
10788 | ||
c906108c SS |
10789 | /* Create the vector of fields, and attach it to the type. */ |
10790 | ||
10791 | static void | |
fba45db2 | 10792 | dwarf2_attach_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 10793 | struct dwarf2_cu *cu) |
c906108c SS |
10794 | { |
10795 | int nfields = fip->nfields; | |
10796 | ||
10797 | /* Record the field count, allocate space for the array of fields, | |
10798 | and create blank accessibility bitfields if necessary. */ | |
10799 | TYPE_NFIELDS (type) = nfields; | |
10800 | TYPE_FIELDS (type) = (struct field *) | |
10801 | TYPE_ALLOC (type, sizeof (struct field) * nfields); | |
10802 | memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nfields); | |
10803 | ||
b4ba55a1 | 10804 | if (fip->non_public_fields && cu->language != language_ada) |
c906108c SS |
10805 | { |
10806 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
10807 | ||
10808 | TYPE_FIELD_PRIVATE_BITS (type) = | |
10809 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
10810 | B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); | |
10811 | ||
10812 | TYPE_FIELD_PROTECTED_BITS (type) = | |
10813 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
10814 | B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); | |
10815 | ||
774b6a14 TT |
10816 | TYPE_FIELD_IGNORE_BITS (type) = |
10817 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
10818 | B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields); | |
c906108c SS |
10819 | } |
10820 | ||
10821 | /* If the type has baseclasses, allocate and clear a bit vector for | |
10822 | TYPE_FIELD_VIRTUAL_BITS. */ | |
b4ba55a1 | 10823 | if (fip->nbaseclasses && cu->language != language_ada) |
c906108c SS |
10824 | { |
10825 | int num_bytes = B_BYTES (fip->nbaseclasses); | |
fe1b8b76 | 10826 | unsigned char *pointer; |
c906108c SS |
10827 | |
10828 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
fe1b8b76 JB |
10829 | pointer = TYPE_ALLOC (type, num_bytes); |
10830 | TYPE_FIELD_VIRTUAL_BITS (type) = pointer; | |
c906108c SS |
10831 | B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), fip->nbaseclasses); |
10832 | TYPE_N_BASECLASSES (type) = fip->nbaseclasses; | |
10833 | } | |
10834 | ||
3e43a32a MS |
10835 | /* Copy the saved-up fields into the field vector. Start from the head of |
10836 | the list, adding to the tail of the field array, so that they end up in | |
10837 | the same order in the array in which they were added to the list. */ | |
c906108c SS |
10838 | while (nfields-- > 0) |
10839 | { | |
7d0ccb61 DJ |
10840 | struct nextfield *fieldp; |
10841 | ||
10842 | if (fip->fields) | |
10843 | { | |
10844 | fieldp = fip->fields; | |
10845 | fip->fields = fieldp->next; | |
10846 | } | |
10847 | else | |
10848 | { | |
10849 | fieldp = fip->baseclasses; | |
10850 | fip->baseclasses = fieldp->next; | |
10851 | } | |
10852 | ||
10853 | TYPE_FIELD (type, nfields) = fieldp->field; | |
10854 | switch (fieldp->accessibility) | |
c906108c | 10855 | { |
c5aa993b | 10856 | case DW_ACCESS_private: |
b4ba55a1 JB |
10857 | if (cu->language != language_ada) |
10858 | SET_TYPE_FIELD_PRIVATE (type, nfields); | |
c5aa993b | 10859 | break; |
c906108c | 10860 | |
c5aa993b | 10861 | case DW_ACCESS_protected: |
b4ba55a1 JB |
10862 | if (cu->language != language_ada) |
10863 | SET_TYPE_FIELD_PROTECTED (type, nfields); | |
c5aa993b | 10864 | break; |
c906108c | 10865 | |
c5aa993b JM |
10866 | case DW_ACCESS_public: |
10867 | break; | |
c906108c | 10868 | |
c5aa993b JM |
10869 | default: |
10870 | /* Unknown accessibility. Complain and treat it as public. */ | |
10871 | { | |
e2e0b3e5 | 10872 | complaint (&symfile_complaints, _("unsupported accessibility %d"), |
7d0ccb61 | 10873 | fieldp->accessibility); |
c5aa993b JM |
10874 | } |
10875 | break; | |
c906108c SS |
10876 | } |
10877 | if (nfields < fip->nbaseclasses) | |
10878 | { | |
7d0ccb61 | 10879 | switch (fieldp->virtuality) |
c906108c | 10880 | { |
c5aa993b JM |
10881 | case DW_VIRTUALITY_virtual: |
10882 | case DW_VIRTUALITY_pure_virtual: | |
b4ba55a1 | 10883 | if (cu->language == language_ada) |
a73c6dcd | 10884 | error (_("unexpected virtuality in component of Ada type")); |
c5aa993b JM |
10885 | SET_TYPE_FIELD_VIRTUAL (type, nfields); |
10886 | break; | |
c906108c SS |
10887 | } |
10888 | } | |
c906108c SS |
10889 | } |
10890 | } | |
10891 | ||
7d27a96d TT |
10892 | /* Return true if this member function is a constructor, false |
10893 | otherwise. */ | |
10894 | ||
10895 | static int | |
10896 | dwarf2_is_constructor (struct die_info *die, struct dwarf2_cu *cu) | |
10897 | { | |
10898 | const char *fieldname; | |
10899 | const char *typename; | |
10900 | int len; | |
10901 | ||
10902 | if (die->parent == NULL) | |
10903 | return 0; | |
10904 | ||
10905 | if (die->parent->tag != DW_TAG_structure_type | |
10906 | && die->parent->tag != DW_TAG_union_type | |
10907 | && die->parent->tag != DW_TAG_class_type) | |
10908 | return 0; | |
10909 | ||
10910 | fieldname = dwarf2_name (die, cu); | |
10911 | typename = dwarf2_name (die->parent, cu); | |
10912 | if (fieldname == NULL || typename == NULL) | |
10913 | return 0; | |
10914 | ||
10915 | len = strlen (fieldname); | |
10916 | return (strncmp (fieldname, typename, len) == 0 | |
10917 | && (typename[len] == '\0' || typename[len] == '<')); | |
10918 | } | |
10919 | ||
c906108c SS |
10920 | /* Add a member function to the proper fieldlist. */ |
10921 | ||
10922 | static void | |
107d2387 | 10923 | dwarf2_add_member_fn (struct field_info *fip, struct die_info *die, |
e7c27a73 | 10924 | struct type *type, struct dwarf2_cu *cu) |
c906108c | 10925 | { |
e7c27a73 | 10926 | struct objfile *objfile = cu->objfile; |
c906108c SS |
10927 | struct attribute *attr; |
10928 | struct fnfieldlist *flp; | |
10929 | int i; | |
10930 | struct fn_field *fnp; | |
15d034d0 | 10931 | const char *fieldname; |
c906108c | 10932 | struct nextfnfield *new_fnfield; |
f792889a | 10933 | struct type *this_type; |
60d5a603 | 10934 | enum dwarf_access_attribute accessibility; |
c906108c | 10935 | |
b4ba55a1 | 10936 | if (cu->language == language_ada) |
a73c6dcd | 10937 | error (_("unexpected member function in Ada type")); |
b4ba55a1 | 10938 | |
2df3850c | 10939 | /* Get name of member function. */ |
39cbfefa DJ |
10940 | fieldname = dwarf2_name (die, cu); |
10941 | if (fieldname == NULL) | |
2df3850c | 10942 | return; |
c906108c | 10943 | |
c906108c SS |
10944 | /* Look up member function name in fieldlist. */ |
10945 | for (i = 0; i < fip->nfnfields; i++) | |
10946 | { | |
27bfe10e | 10947 | if (strcmp (fip->fnfieldlists[i].name, fieldname) == 0) |
c906108c SS |
10948 | break; |
10949 | } | |
10950 | ||
10951 | /* Create new list element if necessary. */ | |
10952 | if (i < fip->nfnfields) | |
10953 | flp = &fip->fnfieldlists[i]; | |
10954 | else | |
10955 | { | |
10956 | if ((fip->nfnfields % DW_FIELD_ALLOC_CHUNK) == 0) | |
10957 | { | |
10958 | fip->fnfieldlists = (struct fnfieldlist *) | |
10959 | xrealloc (fip->fnfieldlists, | |
10960 | (fip->nfnfields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 10961 | * sizeof (struct fnfieldlist)); |
c906108c | 10962 | if (fip->nfnfields == 0) |
c13c43fd | 10963 | make_cleanup (free_current_contents, &fip->fnfieldlists); |
c906108c SS |
10964 | } |
10965 | flp = &fip->fnfieldlists[fip->nfnfields]; | |
10966 | flp->name = fieldname; | |
10967 | flp->length = 0; | |
10968 | flp->head = NULL; | |
3da10d80 | 10969 | i = fip->nfnfields++; |
c906108c SS |
10970 | } |
10971 | ||
10972 | /* Create a new member function field and chain it to the field list | |
0963b4bd | 10973 | entry. */ |
c906108c | 10974 | new_fnfield = (struct nextfnfield *) xmalloc (sizeof (struct nextfnfield)); |
b8c9b27d | 10975 | make_cleanup (xfree, new_fnfield); |
c906108c SS |
10976 | memset (new_fnfield, 0, sizeof (struct nextfnfield)); |
10977 | new_fnfield->next = flp->head; | |
10978 | flp->head = new_fnfield; | |
10979 | flp->length++; | |
10980 | ||
10981 | /* Fill in the member function field info. */ | |
10982 | fnp = &new_fnfield->fnfield; | |
3da10d80 KS |
10983 | |
10984 | /* Delay processing of the physname until later. */ | |
10985 | if (cu->language == language_cplus || cu->language == language_java) | |
10986 | { | |
10987 | add_to_method_list (type, i, flp->length - 1, fieldname, | |
10988 | die, cu); | |
10989 | } | |
10990 | else | |
10991 | { | |
1d06ead6 | 10992 | const char *physname = dwarf2_physname (fieldname, die, cu); |
3da10d80 KS |
10993 | fnp->physname = physname ? physname : ""; |
10994 | } | |
10995 | ||
c906108c | 10996 | fnp->type = alloc_type (objfile); |
f792889a DJ |
10997 | this_type = read_type_die (die, cu); |
10998 | if (this_type && TYPE_CODE (this_type) == TYPE_CODE_FUNC) | |
c906108c | 10999 | { |
f792889a | 11000 | int nparams = TYPE_NFIELDS (this_type); |
c906108c | 11001 | |
f792889a | 11002 | /* TYPE is the domain of this method, and THIS_TYPE is the type |
e26fb1d7 DC |
11003 | of the method itself (TYPE_CODE_METHOD). */ |
11004 | smash_to_method_type (fnp->type, type, | |
f792889a DJ |
11005 | TYPE_TARGET_TYPE (this_type), |
11006 | TYPE_FIELDS (this_type), | |
11007 | TYPE_NFIELDS (this_type), | |
11008 | TYPE_VARARGS (this_type)); | |
c906108c SS |
11009 | |
11010 | /* Handle static member functions. | |
c5aa993b | 11011 | Dwarf2 has no clean way to discern C++ static and non-static |
0963b4bd MS |
11012 | member functions. G++ helps GDB by marking the first |
11013 | parameter for non-static member functions (which is the this | |
11014 | pointer) as artificial. We obtain this information from | |
11015 | read_subroutine_type via TYPE_FIELD_ARTIFICIAL. */ | |
f792889a | 11016 | if (nparams == 0 || TYPE_FIELD_ARTIFICIAL (this_type, 0) == 0) |
c906108c SS |
11017 | fnp->voffset = VOFFSET_STATIC; |
11018 | } | |
11019 | else | |
e2e0b3e5 | 11020 | complaint (&symfile_complaints, _("member function type missing for '%s'"), |
3da10d80 | 11021 | dwarf2_full_name (fieldname, die, cu)); |
c906108c SS |
11022 | |
11023 | /* Get fcontext from DW_AT_containing_type if present. */ | |
e142c38c | 11024 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
e7c27a73 | 11025 | fnp->fcontext = die_containing_type (die, cu); |
c906108c | 11026 | |
3e43a32a MS |
11027 | /* dwarf2 doesn't have stubbed physical names, so the setting of is_const and |
11028 | is_volatile is irrelevant, as it is needed by gdb_mangle_name only. */ | |
c906108c SS |
11029 | |
11030 | /* Get accessibility. */ | |
e142c38c | 11031 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c | 11032 | if (attr) |
60d5a603 JK |
11033 | accessibility = DW_UNSND (attr); |
11034 | else | |
11035 | accessibility = dwarf2_default_access_attribute (die, cu); | |
11036 | switch (accessibility) | |
c906108c | 11037 | { |
60d5a603 JK |
11038 | case DW_ACCESS_private: |
11039 | fnp->is_private = 1; | |
11040 | break; | |
11041 | case DW_ACCESS_protected: | |
11042 | fnp->is_protected = 1; | |
11043 | break; | |
c906108c SS |
11044 | } |
11045 | ||
b02dede2 | 11046 | /* Check for artificial methods. */ |
e142c38c | 11047 | attr = dwarf2_attr (die, DW_AT_artificial, cu); |
b02dede2 DJ |
11048 | if (attr && DW_UNSND (attr) != 0) |
11049 | fnp->is_artificial = 1; | |
11050 | ||
7d27a96d TT |
11051 | fnp->is_constructor = dwarf2_is_constructor (die, cu); |
11052 | ||
0d564a31 | 11053 | /* Get index in virtual function table if it is a virtual member |
aec5aa8b TT |
11054 | function. For older versions of GCC, this is an offset in the |
11055 | appropriate virtual table, as specified by DW_AT_containing_type. | |
11056 | For everyone else, it is an expression to be evaluated relative | |
0d564a31 DJ |
11057 | to the object address. */ |
11058 | ||
e142c38c | 11059 | attr = dwarf2_attr (die, DW_AT_vtable_elem_location, cu); |
aec5aa8b | 11060 | if (attr) |
8e19ed76 | 11061 | { |
aec5aa8b | 11062 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size > 0) |
8e19ed76 | 11063 | { |
aec5aa8b TT |
11064 | if (DW_BLOCK (attr)->data[0] == DW_OP_constu) |
11065 | { | |
11066 | /* Old-style GCC. */ | |
11067 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu) + 2; | |
11068 | } | |
11069 | else if (DW_BLOCK (attr)->data[0] == DW_OP_deref | |
11070 | || (DW_BLOCK (attr)->size > 1 | |
11071 | && DW_BLOCK (attr)->data[0] == DW_OP_deref_size | |
11072 | && DW_BLOCK (attr)->data[1] == cu->header.addr_size)) | |
11073 | { | |
11074 | struct dwarf_block blk; | |
11075 | int offset; | |
11076 | ||
11077 | offset = (DW_BLOCK (attr)->data[0] == DW_OP_deref | |
11078 | ? 1 : 2); | |
11079 | blk.size = DW_BLOCK (attr)->size - offset; | |
11080 | blk.data = DW_BLOCK (attr)->data + offset; | |
11081 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu); | |
11082 | if ((fnp->voffset % cu->header.addr_size) != 0) | |
11083 | dwarf2_complex_location_expr_complaint (); | |
11084 | else | |
11085 | fnp->voffset /= cu->header.addr_size; | |
11086 | fnp->voffset += 2; | |
11087 | } | |
11088 | else | |
11089 | dwarf2_complex_location_expr_complaint (); | |
11090 | ||
11091 | if (!fnp->fcontext) | |
11092 | fnp->fcontext = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (this_type, 0)); | |
11093 | } | |
3690dd37 | 11094 | else if (attr_form_is_section_offset (attr)) |
8e19ed76 | 11095 | { |
4d3c2250 | 11096 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
11097 | } |
11098 | else | |
11099 | { | |
4d3c2250 KB |
11100 | dwarf2_invalid_attrib_class_complaint ("DW_AT_vtable_elem_location", |
11101 | fieldname); | |
8e19ed76 | 11102 | } |
0d564a31 | 11103 | } |
d48cc9dd DJ |
11104 | else |
11105 | { | |
11106 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); | |
11107 | if (attr && DW_UNSND (attr)) | |
11108 | { | |
11109 | /* GCC does this, as of 2008-08-25; PR debug/37237. */ | |
11110 | complaint (&symfile_complaints, | |
3e43a32a MS |
11111 | _("Member function \"%s\" (offset %d) is virtual " |
11112 | "but the vtable offset is not specified"), | |
b64f50a1 | 11113 | fieldname, die->offset.sect_off); |
9655fd1a | 11114 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
d48cc9dd DJ |
11115 | TYPE_CPLUS_DYNAMIC (type) = 1; |
11116 | } | |
11117 | } | |
c906108c SS |
11118 | } |
11119 | ||
11120 | /* Create the vector of member function fields, and attach it to the type. */ | |
11121 | ||
11122 | static void | |
fba45db2 | 11123 | dwarf2_attach_fn_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 11124 | struct dwarf2_cu *cu) |
c906108c SS |
11125 | { |
11126 | struct fnfieldlist *flp; | |
c906108c SS |
11127 | int i; |
11128 | ||
b4ba55a1 | 11129 | if (cu->language == language_ada) |
a73c6dcd | 11130 | error (_("unexpected member functions in Ada type")); |
b4ba55a1 | 11131 | |
c906108c SS |
11132 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
11133 | TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) | |
11134 | TYPE_ALLOC (type, sizeof (struct fn_fieldlist) * fip->nfnfields); | |
11135 | ||
11136 | for (i = 0, flp = fip->fnfieldlists; i < fip->nfnfields; i++, flp++) | |
11137 | { | |
11138 | struct nextfnfield *nfp = flp->head; | |
11139 | struct fn_fieldlist *fn_flp = &TYPE_FN_FIELDLIST (type, i); | |
11140 | int k; | |
11141 | ||
11142 | TYPE_FN_FIELDLIST_NAME (type, i) = flp->name; | |
11143 | TYPE_FN_FIELDLIST_LENGTH (type, i) = flp->length; | |
11144 | fn_flp->fn_fields = (struct fn_field *) | |
11145 | TYPE_ALLOC (type, sizeof (struct fn_field) * flp->length); | |
11146 | for (k = flp->length; (k--, nfp); nfp = nfp->next) | |
c5aa993b | 11147 | fn_flp->fn_fields[k] = nfp->fnfield; |
c906108c SS |
11148 | } |
11149 | ||
11150 | TYPE_NFN_FIELDS (type) = fip->nfnfields; | |
c906108c SS |
11151 | } |
11152 | ||
1168df01 JB |
11153 | /* Returns non-zero if NAME is the name of a vtable member in CU's |
11154 | language, zero otherwise. */ | |
11155 | static int | |
11156 | is_vtable_name (const char *name, struct dwarf2_cu *cu) | |
11157 | { | |
11158 | static const char vptr[] = "_vptr"; | |
987504bb | 11159 | static const char vtable[] = "vtable"; |
1168df01 | 11160 | |
987504bb JJ |
11161 | /* Look for the C++ and Java forms of the vtable. */ |
11162 | if ((cu->language == language_java | |
11163 | && strncmp (name, vtable, sizeof (vtable) - 1) == 0) | |
11164 | || (strncmp (name, vptr, sizeof (vptr) - 1) == 0 | |
11165 | && is_cplus_marker (name[sizeof (vptr) - 1]))) | |
1168df01 JB |
11166 | return 1; |
11167 | ||
11168 | return 0; | |
11169 | } | |
11170 | ||
c0dd20ea | 11171 | /* GCC outputs unnamed structures that are really pointers to member |
0b92b5bb TT |
11172 | functions, with the ABI-specified layout. If TYPE describes |
11173 | such a structure, smash it into a member function type. | |
61049d3b DJ |
11174 | |
11175 | GCC shouldn't do this; it should just output pointer to member DIEs. | |
11176 | This is GCC PR debug/28767. */ | |
c0dd20ea | 11177 | |
0b92b5bb TT |
11178 | static void |
11179 | quirk_gcc_member_function_pointer (struct type *type, struct objfile *objfile) | |
c0dd20ea | 11180 | { |
0b92b5bb | 11181 | struct type *pfn_type, *domain_type, *new_type; |
c0dd20ea DJ |
11182 | |
11183 | /* Check for a structure with no name and two children. */ | |
0b92b5bb TT |
11184 | if (TYPE_CODE (type) != TYPE_CODE_STRUCT || TYPE_NFIELDS (type) != 2) |
11185 | return; | |
c0dd20ea DJ |
11186 | |
11187 | /* Check for __pfn and __delta members. */ | |
0b92b5bb TT |
11188 | if (TYPE_FIELD_NAME (type, 0) == NULL |
11189 | || strcmp (TYPE_FIELD_NAME (type, 0), "__pfn") != 0 | |
11190 | || TYPE_FIELD_NAME (type, 1) == NULL | |
11191 | || strcmp (TYPE_FIELD_NAME (type, 1), "__delta") != 0) | |
11192 | return; | |
c0dd20ea DJ |
11193 | |
11194 | /* Find the type of the method. */ | |
0b92b5bb | 11195 | pfn_type = TYPE_FIELD_TYPE (type, 0); |
c0dd20ea DJ |
11196 | if (pfn_type == NULL |
11197 | || TYPE_CODE (pfn_type) != TYPE_CODE_PTR | |
11198 | || TYPE_CODE (TYPE_TARGET_TYPE (pfn_type)) != TYPE_CODE_FUNC) | |
0b92b5bb | 11199 | return; |
c0dd20ea DJ |
11200 | |
11201 | /* Look for the "this" argument. */ | |
11202 | pfn_type = TYPE_TARGET_TYPE (pfn_type); | |
11203 | if (TYPE_NFIELDS (pfn_type) == 0 | |
0b92b5bb | 11204 | /* || TYPE_FIELD_TYPE (pfn_type, 0) == NULL */ |
c0dd20ea | 11205 | || TYPE_CODE (TYPE_FIELD_TYPE (pfn_type, 0)) != TYPE_CODE_PTR) |
0b92b5bb | 11206 | return; |
c0dd20ea DJ |
11207 | |
11208 | domain_type = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (pfn_type, 0)); | |
0b92b5bb TT |
11209 | new_type = alloc_type (objfile); |
11210 | smash_to_method_type (new_type, domain_type, TYPE_TARGET_TYPE (pfn_type), | |
c0dd20ea DJ |
11211 | TYPE_FIELDS (pfn_type), TYPE_NFIELDS (pfn_type), |
11212 | TYPE_VARARGS (pfn_type)); | |
0b92b5bb | 11213 | smash_to_methodptr_type (type, new_type); |
c0dd20ea | 11214 | } |
1168df01 | 11215 | |
685b1105 JK |
11216 | /* Return non-zero if the CU's PRODUCER string matches the Intel C/C++ compiler |
11217 | (icc). */ | |
11218 | ||
11219 | static int | |
11220 | producer_is_icc (struct dwarf2_cu *cu) | |
11221 | { | |
11222 | if (!cu->checked_producer) | |
11223 | check_producer (cu); | |
11224 | ||
11225 | return cu->producer_is_icc; | |
11226 | } | |
11227 | ||
c906108c | 11228 | /* Called when we find the DIE that starts a structure or union scope |
c767944b DJ |
11229 | (definition) to create a type for the structure or union. Fill in |
11230 | the type's name and general properties; the members will not be | |
11231 | processed until process_structure_type. | |
c906108c | 11232 | |
c767944b DJ |
11233 | NOTE: we need to call these functions regardless of whether or not the |
11234 | DIE has a DW_AT_name attribute, since it might be an anonymous | |
c906108c SS |
11235 | structure or union. This gets the type entered into our set of |
11236 | user defined types. | |
11237 | ||
11238 | However, if the structure is incomplete (an opaque struct/union) | |
11239 | then suppress creating a symbol table entry for it since gdb only | |
11240 | wants to find the one with the complete definition. Note that if | |
11241 | it is complete, we just call new_symbol, which does it's own | |
11242 | checking about whether the struct/union is anonymous or not (and | |
11243 | suppresses creating a symbol table entry itself). */ | |
11244 | ||
f792889a | 11245 | static struct type * |
134d01f1 | 11246 | read_structure_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 11247 | { |
e7c27a73 | 11248 | struct objfile *objfile = cu->objfile; |
c906108c SS |
11249 | struct type *type; |
11250 | struct attribute *attr; | |
15d034d0 | 11251 | const char *name; |
c906108c | 11252 | |
348e048f DE |
11253 | /* If the definition of this type lives in .debug_types, read that type. |
11254 | Don't follow DW_AT_specification though, that will take us back up | |
11255 | the chain and we want to go down. */ | |
45e58e77 | 11256 | attr = dwarf2_attr_no_follow (die, DW_AT_signature); |
348e048f DE |
11257 | if (attr) |
11258 | { | |
11259 | struct dwarf2_cu *type_cu = cu; | |
11260 | struct die_info *type_die = follow_die_ref_or_sig (die, attr, &type_cu); | |
9a619af0 | 11261 | |
348e048f DE |
11262 | /* We could just recurse on read_structure_type, but we need to call |
11263 | get_die_type to ensure only one type for this DIE is created. | |
11264 | This is important, for example, because for c++ classes we need | |
11265 | TYPE_NAME set which is only done by new_symbol. Blech. */ | |
11266 | type = read_type_die (type_die, type_cu); | |
9dc481d3 DE |
11267 | |
11268 | /* TYPE_CU may not be the same as CU. | |
11269 | Ensure TYPE is recorded in CU's type_hash table. */ | |
348e048f DE |
11270 | return set_die_type (die, type, cu); |
11271 | } | |
11272 | ||
c0dd20ea | 11273 | type = alloc_type (objfile); |
c906108c | 11274 | INIT_CPLUS_SPECIFIC (type); |
93311388 | 11275 | |
39cbfefa DJ |
11276 | name = dwarf2_name (die, cu); |
11277 | if (name != NULL) | |
c906108c | 11278 | { |
987504bb JJ |
11279 | if (cu->language == language_cplus |
11280 | || cu->language == language_java) | |
63d06c5c | 11281 | { |
15d034d0 | 11282 | const char *full_name = dwarf2_full_name (name, die, cu); |
3da10d80 KS |
11283 | |
11284 | /* dwarf2_full_name might have already finished building the DIE's | |
11285 | type. If so, there is no need to continue. */ | |
11286 | if (get_die_type (die, cu) != NULL) | |
11287 | return get_die_type (die, cu); | |
11288 | ||
11289 | TYPE_TAG_NAME (type) = full_name; | |
94af9270 KS |
11290 | if (die->tag == DW_TAG_structure_type |
11291 | || die->tag == DW_TAG_class_type) | |
11292 | TYPE_NAME (type) = TYPE_TAG_NAME (type); | |
63d06c5c DC |
11293 | } |
11294 | else | |
11295 | { | |
d8151005 DJ |
11296 | /* The name is already allocated along with this objfile, so |
11297 | we don't need to duplicate it for the type. */ | |
7d455152 | 11298 | TYPE_TAG_NAME (type) = name; |
94af9270 KS |
11299 | if (die->tag == DW_TAG_class_type) |
11300 | TYPE_NAME (type) = TYPE_TAG_NAME (type); | |
63d06c5c | 11301 | } |
c906108c SS |
11302 | } |
11303 | ||
11304 | if (die->tag == DW_TAG_structure_type) | |
11305 | { | |
11306 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
11307 | } | |
11308 | else if (die->tag == DW_TAG_union_type) | |
11309 | { | |
11310 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
11311 | } | |
11312 | else | |
11313 | { | |
c906108c SS |
11314 | TYPE_CODE (type) = TYPE_CODE_CLASS; |
11315 | } | |
11316 | ||
0cc2414c TT |
11317 | if (cu->language == language_cplus && die->tag == DW_TAG_class_type) |
11318 | TYPE_DECLARED_CLASS (type) = 1; | |
11319 | ||
e142c38c | 11320 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
11321 | if (attr) |
11322 | { | |
11323 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
11324 | } | |
11325 | else | |
11326 | { | |
11327 | TYPE_LENGTH (type) = 0; | |
11328 | } | |
11329 | ||
685b1105 JK |
11330 | if (producer_is_icc (cu)) |
11331 | { | |
11332 | /* ICC does not output the required DW_AT_declaration | |
11333 | on incomplete types, but gives them a size of zero. */ | |
11334 | } | |
11335 | else | |
11336 | TYPE_STUB_SUPPORTED (type) = 1; | |
11337 | ||
dc718098 | 11338 | if (die_is_declaration (die, cu)) |
876cecd0 | 11339 | TYPE_STUB (type) = 1; |
a6c727b2 DJ |
11340 | else if (attr == NULL && die->child == NULL |
11341 | && producer_is_realview (cu->producer)) | |
11342 | /* RealView does not output the required DW_AT_declaration | |
11343 | on incomplete types. */ | |
11344 | TYPE_STUB (type) = 1; | |
dc718098 | 11345 | |
c906108c SS |
11346 | /* We need to add the type field to the die immediately so we don't |
11347 | infinitely recurse when dealing with pointers to the structure | |
0963b4bd | 11348 | type within the structure itself. */ |
1c379e20 | 11349 | set_die_type (die, type, cu); |
c906108c | 11350 | |
7e314c57 JK |
11351 | /* set_die_type should be already done. */ |
11352 | set_descriptive_type (type, die, cu); | |
11353 | ||
c767944b DJ |
11354 | return type; |
11355 | } | |
11356 | ||
11357 | /* Finish creating a structure or union type, including filling in | |
11358 | its members and creating a symbol for it. */ | |
11359 | ||
11360 | static void | |
11361 | process_structure_scope (struct die_info *die, struct dwarf2_cu *cu) | |
11362 | { | |
11363 | struct objfile *objfile = cu->objfile; | |
11364 | struct die_info *child_die = die->child; | |
11365 | struct type *type; | |
11366 | ||
11367 | type = get_die_type (die, cu); | |
11368 | if (type == NULL) | |
11369 | type = read_structure_type (die, cu); | |
11370 | ||
e142c38c | 11371 | if (die->child != NULL && ! die_is_declaration (die, cu)) |
c906108c SS |
11372 | { |
11373 | struct field_info fi; | |
11374 | struct die_info *child_die; | |
34eaf542 | 11375 | VEC (symbolp) *template_args = NULL; |
c767944b | 11376 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
c906108c SS |
11377 | |
11378 | memset (&fi, 0, sizeof (struct field_info)); | |
11379 | ||
639d11d3 | 11380 | child_die = die->child; |
c906108c SS |
11381 | |
11382 | while (child_die && child_die->tag) | |
11383 | { | |
a9a9bd0f DC |
11384 | if (child_die->tag == DW_TAG_member |
11385 | || child_die->tag == DW_TAG_variable) | |
c906108c | 11386 | { |
a9a9bd0f DC |
11387 | /* NOTE: carlton/2002-11-05: A C++ static data member |
11388 | should be a DW_TAG_member that is a declaration, but | |
11389 | all versions of G++ as of this writing (so through at | |
11390 | least 3.2.1) incorrectly generate DW_TAG_variable | |
11391 | tags for them instead. */ | |
e7c27a73 | 11392 | dwarf2_add_field (&fi, child_die, cu); |
c906108c | 11393 | } |
8713b1b1 | 11394 | else if (child_die->tag == DW_TAG_subprogram) |
c906108c | 11395 | { |
0963b4bd | 11396 | /* C++ member function. */ |
e7c27a73 | 11397 | dwarf2_add_member_fn (&fi, child_die, type, cu); |
c906108c SS |
11398 | } |
11399 | else if (child_die->tag == DW_TAG_inheritance) | |
11400 | { | |
11401 | /* C++ base class field. */ | |
e7c27a73 | 11402 | dwarf2_add_field (&fi, child_die, cu); |
c906108c | 11403 | } |
98751a41 JK |
11404 | else if (child_die->tag == DW_TAG_typedef) |
11405 | dwarf2_add_typedef (&fi, child_die, cu); | |
34eaf542 TT |
11406 | else if (child_die->tag == DW_TAG_template_type_param |
11407 | || child_die->tag == DW_TAG_template_value_param) | |
11408 | { | |
11409 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
11410 | ||
f1078f66 DJ |
11411 | if (arg != NULL) |
11412 | VEC_safe_push (symbolp, template_args, arg); | |
34eaf542 TT |
11413 | } |
11414 | ||
c906108c SS |
11415 | child_die = sibling_die (child_die); |
11416 | } | |
11417 | ||
34eaf542 TT |
11418 | /* Attach template arguments to type. */ |
11419 | if (! VEC_empty (symbolp, template_args)) | |
11420 | { | |
11421 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
11422 | TYPE_N_TEMPLATE_ARGUMENTS (type) | |
11423 | = VEC_length (symbolp, template_args); | |
11424 | TYPE_TEMPLATE_ARGUMENTS (type) | |
11425 | = obstack_alloc (&objfile->objfile_obstack, | |
11426 | (TYPE_N_TEMPLATE_ARGUMENTS (type) | |
11427 | * sizeof (struct symbol *))); | |
11428 | memcpy (TYPE_TEMPLATE_ARGUMENTS (type), | |
11429 | VEC_address (symbolp, template_args), | |
11430 | (TYPE_N_TEMPLATE_ARGUMENTS (type) | |
11431 | * sizeof (struct symbol *))); | |
11432 | VEC_free (symbolp, template_args); | |
11433 | } | |
11434 | ||
c906108c SS |
11435 | /* Attach fields and member functions to the type. */ |
11436 | if (fi.nfields) | |
e7c27a73 | 11437 | dwarf2_attach_fields_to_type (&fi, type, cu); |
c906108c SS |
11438 | if (fi.nfnfields) |
11439 | { | |
e7c27a73 | 11440 | dwarf2_attach_fn_fields_to_type (&fi, type, cu); |
c906108c | 11441 | |
c5aa993b | 11442 | /* Get the type which refers to the base class (possibly this |
c906108c | 11443 | class itself) which contains the vtable pointer for the current |
0d564a31 DJ |
11444 | class from the DW_AT_containing_type attribute. This use of |
11445 | DW_AT_containing_type is a GNU extension. */ | |
c906108c | 11446 | |
e142c38c | 11447 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
c906108c | 11448 | { |
e7c27a73 | 11449 | struct type *t = die_containing_type (die, cu); |
c906108c SS |
11450 | |
11451 | TYPE_VPTR_BASETYPE (type) = t; | |
11452 | if (type == t) | |
11453 | { | |
c906108c SS |
11454 | int i; |
11455 | ||
11456 | /* Our own class provides vtbl ptr. */ | |
11457 | for (i = TYPE_NFIELDS (t) - 1; | |
11458 | i >= TYPE_N_BASECLASSES (t); | |
11459 | --i) | |
11460 | { | |
0d5cff50 | 11461 | const char *fieldname = TYPE_FIELD_NAME (t, i); |
c906108c | 11462 | |
1168df01 | 11463 | if (is_vtable_name (fieldname, cu)) |
c906108c SS |
11464 | { |
11465 | TYPE_VPTR_FIELDNO (type) = i; | |
11466 | break; | |
11467 | } | |
11468 | } | |
11469 | ||
11470 | /* Complain if virtual function table field not found. */ | |
11471 | if (i < TYPE_N_BASECLASSES (t)) | |
4d3c2250 | 11472 | complaint (&symfile_complaints, |
3e43a32a MS |
11473 | _("virtual function table pointer " |
11474 | "not found when defining class '%s'"), | |
4d3c2250 KB |
11475 | TYPE_TAG_NAME (type) ? TYPE_TAG_NAME (type) : |
11476 | ""); | |
c906108c SS |
11477 | } |
11478 | else | |
11479 | { | |
11480 | TYPE_VPTR_FIELDNO (type) = TYPE_VPTR_FIELDNO (t); | |
11481 | } | |
11482 | } | |
f6235d4c EZ |
11483 | else if (cu->producer |
11484 | && strncmp (cu->producer, | |
11485 | "IBM(R) XL C/C++ Advanced Edition", 32) == 0) | |
11486 | { | |
11487 | /* The IBM XLC compiler does not provide direct indication | |
11488 | of the containing type, but the vtable pointer is | |
11489 | always named __vfp. */ | |
11490 | ||
11491 | int i; | |
11492 | ||
11493 | for (i = TYPE_NFIELDS (type) - 1; | |
11494 | i >= TYPE_N_BASECLASSES (type); | |
11495 | --i) | |
11496 | { | |
11497 | if (strcmp (TYPE_FIELD_NAME (type, i), "__vfp") == 0) | |
11498 | { | |
11499 | TYPE_VPTR_FIELDNO (type) = i; | |
11500 | TYPE_VPTR_BASETYPE (type) = type; | |
11501 | break; | |
11502 | } | |
11503 | } | |
11504 | } | |
c906108c | 11505 | } |
98751a41 JK |
11506 | |
11507 | /* Copy fi.typedef_field_list linked list elements content into the | |
11508 | allocated array TYPE_TYPEDEF_FIELD_ARRAY (type). */ | |
11509 | if (fi.typedef_field_list) | |
11510 | { | |
11511 | int i = fi.typedef_field_list_count; | |
11512 | ||
a0d7a4ff | 11513 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
98751a41 JK |
11514 | TYPE_TYPEDEF_FIELD_ARRAY (type) |
11515 | = TYPE_ALLOC (type, sizeof (TYPE_TYPEDEF_FIELD (type, 0)) * i); | |
11516 | TYPE_TYPEDEF_FIELD_COUNT (type) = i; | |
11517 | ||
11518 | /* Reverse the list order to keep the debug info elements order. */ | |
11519 | while (--i >= 0) | |
11520 | { | |
11521 | struct typedef_field *dest, *src; | |
6e70227d | 11522 | |
98751a41 JK |
11523 | dest = &TYPE_TYPEDEF_FIELD (type, i); |
11524 | src = &fi.typedef_field_list->field; | |
11525 | fi.typedef_field_list = fi.typedef_field_list->next; | |
11526 | *dest = *src; | |
11527 | } | |
11528 | } | |
c767944b DJ |
11529 | |
11530 | do_cleanups (back_to); | |
eb2a6f42 TT |
11531 | |
11532 | if (HAVE_CPLUS_STRUCT (type)) | |
11533 | TYPE_CPLUS_REALLY_JAVA (type) = cu->language == language_java; | |
c906108c | 11534 | } |
63d06c5c | 11535 | |
bb5ed363 | 11536 | quirk_gcc_member_function_pointer (type, objfile); |
0b92b5bb | 11537 | |
90aeadfc DC |
11538 | /* NOTE: carlton/2004-03-16: GCC 3.4 (or at least one of its |
11539 | snapshots) has been known to create a die giving a declaration | |
11540 | for a class that has, as a child, a die giving a definition for a | |
11541 | nested class. So we have to process our children even if the | |
11542 | current die is a declaration. Normally, of course, a declaration | |
11543 | won't have any children at all. */ | |
134d01f1 | 11544 | |
90aeadfc DC |
11545 | while (child_die != NULL && child_die->tag) |
11546 | { | |
11547 | if (child_die->tag == DW_TAG_member | |
11548 | || child_die->tag == DW_TAG_variable | |
34eaf542 TT |
11549 | || child_die->tag == DW_TAG_inheritance |
11550 | || child_die->tag == DW_TAG_template_value_param | |
11551 | || child_die->tag == DW_TAG_template_type_param) | |
134d01f1 | 11552 | { |
90aeadfc | 11553 | /* Do nothing. */ |
134d01f1 | 11554 | } |
90aeadfc DC |
11555 | else |
11556 | process_die (child_die, cu); | |
134d01f1 | 11557 | |
90aeadfc | 11558 | child_die = sibling_die (child_die); |
134d01f1 DJ |
11559 | } |
11560 | ||
fa4028e9 JB |
11561 | /* Do not consider external references. According to the DWARF standard, |
11562 | these DIEs are identified by the fact that they have no byte_size | |
11563 | attribute, and a declaration attribute. */ | |
11564 | if (dwarf2_attr (die, DW_AT_byte_size, cu) != NULL | |
11565 | || !die_is_declaration (die, cu)) | |
c767944b | 11566 | new_symbol (die, type, cu); |
134d01f1 DJ |
11567 | } |
11568 | ||
11569 | /* Given a DW_AT_enumeration_type die, set its type. We do not | |
11570 | complete the type's fields yet, or create any symbols. */ | |
c906108c | 11571 | |
f792889a | 11572 | static struct type * |
134d01f1 | 11573 | read_enumeration_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 11574 | { |
e7c27a73 | 11575 | struct objfile *objfile = cu->objfile; |
c906108c | 11576 | struct type *type; |
c906108c | 11577 | struct attribute *attr; |
0114d602 | 11578 | const char *name; |
134d01f1 | 11579 | |
348e048f DE |
11580 | /* If the definition of this type lives in .debug_types, read that type. |
11581 | Don't follow DW_AT_specification though, that will take us back up | |
11582 | the chain and we want to go down. */ | |
45e58e77 | 11583 | attr = dwarf2_attr_no_follow (die, DW_AT_signature); |
348e048f DE |
11584 | if (attr) |
11585 | { | |
11586 | struct dwarf2_cu *type_cu = cu; | |
11587 | struct die_info *type_die = follow_die_ref_or_sig (die, attr, &type_cu); | |
9a619af0 | 11588 | |
348e048f | 11589 | type = read_type_die (type_die, type_cu); |
9dc481d3 DE |
11590 | |
11591 | /* TYPE_CU may not be the same as CU. | |
11592 | Ensure TYPE is recorded in CU's type_hash table. */ | |
348e048f DE |
11593 | return set_die_type (die, type, cu); |
11594 | } | |
11595 | ||
c906108c SS |
11596 | type = alloc_type (objfile); |
11597 | ||
11598 | TYPE_CODE (type) = TYPE_CODE_ENUM; | |
94af9270 | 11599 | name = dwarf2_full_name (NULL, die, cu); |
39cbfefa | 11600 | if (name != NULL) |
7d455152 | 11601 | TYPE_TAG_NAME (type) = name; |
c906108c | 11602 | |
e142c38c | 11603 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
11604 | if (attr) |
11605 | { | |
11606 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
11607 | } | |
11608 | else | |
11609 | { | |
11610 | TYPE_LENGTH (type) = 0; | |
11611 | } | |
11612 | ||
137033e9 JB |
11613 | /* The enumeration DIE can be incomplete. In Ada, any type can be |
11614 | declared as private in the package spec, and then defined only | |
11615 | inside the package body. Such types are known as Taft Amendment | |
11616 | Types. When another package uses such a type, an incomplete DIE | |
11617 | may be generated by the compiler. */ | |
02eb380e | 11618 | if (die_is_declaration (die, cu)) |
876cecd0 | 11619 | TYPE_STUB (type) = 1; |
02eb380e | 11620 | |
f792889a | 11621 | return set_die_type (die, type, cu); |
134d01f1 DJ |
11622 | } |
11623 | ||
11624 | /* Given a pointer to a die which begins an enumeration, process all | |
11625 | the dies that define the members of the enumeration, and create the | |
11626 | symbol for the enumeration type. | |
11627 | ||
11628 | NOTE: We reverse the order of the element list. */ | |
11629 | ||
11630 | static void | |
11631 | process_enumeration_scope (struct die_info *die, struct dwarf2_cu *cu) | |
11632 | { | |
f792889a | 11633 | struct type *this_type; |
134d01f1 | 11634 | |
f792889a DJ |
11635 | this_type = get_die_type (die, cu); |
11636 | if (this_type == NULL) | |
11637 | this_type = read_enumeration_type (die, cu); | |
9dc481d3 | 11638 | |
639d11d3 | 11639 | if (die->child != NULL) |
c906108c | 11640 | { |
9dc481d3 DE |
11641 | struct die_info *child_die; |
11642 | struct symbol *sym; | |
11643 | struct field *fields = NULL; | |
11644 | int num_fields = 0; | |
11645 | int unsigned_enum = 1; | |
15d034d0 | 11646 | const char *name; |
cafec441 TT |
11647 | int flag_enum = 1; |
11648 | ULONGEST mask = 0; | |
9dc481d3 | 11649 | |
639d11d3 | 11650 | child_die = die->child; |
c906108c SS |
11651 | while (child_die && child_die->tag) |
11652 | { | |
11653 | if (child_die->tag != DW_TAG_enumerator) | |
11654 | { | |
e7c27a73 | 11655 | process_die (child_die, cu); |
c906108c SS |
11656 | } |
11657 | else | |
11658 | { | |
39cbfefa DJ |
11659 | name = dwarf2_name (child_die, cu); |
11660 | if (name) | |
c906108c | 11661 | { |
f792889a | 11662 | sym = new_symbol (child_die, this_type, cu); |
c906108c | 11663 | if (SYMBOL_VALUE (sym) < 0) |
cafec441 TT |
11664 | { |
11665 | unsigned_enum = 0; | |
11666 | flag_enum = 0; | |
11667 | } | |
11668 | else if ((mask & SYMBOL_VALUE (sym)) != 0) | |
11669 | flag_enum = 0; | |
11670 | else | |
11671 | mask |= SYMBOL_VALUE (sym); | |
c906108c SS |
11672 | |
11673 | if ((num_fields % DW_FIELD_ALLOC_CHUNK) == 0) | |
11674 | { | |
11675 | fields = (struct field *) | |
11676 | xrealloc (fields, | |
11677 | (num_fields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 11678 | * sizeof (struct field)); |
c906108c SS |
11679 | } |
11680 | ||
3567439c | 11681 | FIELD_NAME (fields[num_fields]) = SYMBOL_LINKAGE_NAME (sym); |
c906108c | 11682 | FIELD_TYPE (fields[num_fields]) = NULL; |
14e75d8e | 11683 | SET_FIELD_ENUMVAL (fields[num_fields], SYMBOL_VALUE (sym)); |
c906108c SS |
11684 | FIELD_BITSIZE (fields[num_fields]) = 0; |
11685 | ||
11686 | num_fields++; | |
11687 | } | |
11688 | } | |
11689 | ||
11690 | child_die = sibling_die (child_die); | |
11691 | } | |
11692 | ||
11693 | if (num_fields) | |
11694 | { | |
f792889a DJ |
11695 | TYPE_NFIELDS (this_type) = num_fields; |
11696 | TYPE_FIELDS (this_type) = (struct field *) | |
11697 | TYPE_ALLOC (this_type, sizeof (struct field) * num_fields); | |
11698 | memcpy (TYPE_FIELDS (this_type), fields, | |
c906108c | 11699 | sizeof (struct field) * num_fields); |
b8c9b27d | 11700 | xfree (fields); |
c906108c SS |
11701 | } |
11702 | if (unsigned_enum) | |
876cecd0 | 11703 | TYPE_UNSIGNED (this_type) = 1; |
cafec441 TT |
11704 | if (flag_enum) |
11705 | TYPE_FLAG_ENUM (this_type) = 1; | |
c906108c | 11706 | } |
134d01f1 | 11707 | |
6c83ed52 TT |
11708 | /* If we are reading an enum from a .debug_types unit, and the enum |
11709 | is a declaration, and the enum is not the signatured type in the | |
11710 | unit, then we do not want to add a symbol for it. Adding a | |
11711 | symbol would in some cases obscure the true definition of the | |
11712 | enum, giving users an incomplete type when the definition is | |
11713 | actually available. Note that we do not want to do this for all | |
11714 | enums which are just declarations, because C++0x allows forward | |
11715 | enum declarations. */ | |
3019eac3 | 11716 | if (cu->per_cu->is_debug_types |
6c83ed52 TT |
11717 | && die_is_declaration (die, cu)) |
11718 | { | |
52dc124a | 11719 | struct signatured_type *sig_type; |
6c83ed52 | 11720 | |
52dc124a | 11721 | sig_type |
6c83ed52 | 11722 | = lookup_signatured_type_at_offset (dwarf2_per_objfile->objfile, |
8a0459fd | 11723 | cu->per_cu->section, |
6c83ed52 | 11724 | cu->per_cu->offset); |
3019eac3 DE |
11725 | gdb_assert (sig_type->type_offset_in_section.sect_off != 0); |
11726 | if (sig_type->type_offset_in_section.sect_off != die->offset.sect_off) | |
6c83ed52 TT |
11727 | return; |
11728 | } | |
11729 | ||
f792889a | 11730 | new_symbol (die, this_type, cu); |
c906108c SS |
11731 | } |
11732 | ||
11733 | /* Extract all information from a DW_TAG_array_type DIE and put it in | |
11734 | the DIE's type field. For now, this only handles one dimensional | |
11735 | arrays. */ | |
11736 | ||
f792889a | 11737 | static struct type * |
e7c27a73 | 11738 | read_array_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 11739 | { |
e7c27a73 | 11740 | struct objfile *objfile = cu->objfile; |
c906108c | 11741 | struct die_info *child_die; |
7e314c57 | 11742 | struct type *type; |
c906108c SS |
11743 | struct type *element_type, *range_type, *index_type; |
11744 | struct type **range_types = NULL; | |
11745 | struct attribute *attr; | |
11746 | int ndim = 0; | |
11747 | struct cleanup *back_to; | |
15d034d0 | 11748 | const char *name; |
c906108c | 11749 | |
e7c27a73 | 11750 | element_type = die_type (die, cu); |
c906108c | 11751 | |
7e314c57 JK |
11752 | /* The die_type call above may have already set the type for this DIE. */ |
11753 | type = get_die_type (die, cu); | |
11754 | if (type) | |
11755 | return type; | |
11756 | ||
c906108c SS |
11757 | /* Irix 6.2 native cc creates array types without children for |
11758 | arrays with unspecified length. */ | |
639d11d3 | 11759 | if (die->child == NULL) |
c906108c | 11760 | { |
46bf5051 | 11761 | index_type = objfile_type (objfile)->builtin_int; |
c906108c | 11762 | range_type = create_range_type (NULL, index_type, 0, -1); |
f792889a DJ |
11763 | type = create_array_type (NULL, element_type, range_type); |
11764 | return set_die_type (die, type, cu); | |
c906108c SS |
11765 | } |
11766 | ||
11767 | back_to = make_cleanup (null_cleanup, NULL); | |
639d11d3 | 11768 | child_die = die->child; |
c906108c SS |
11769 | while (child_die && child_die->tag) |
11770 | { | |
11771 | if (child_die->tag == DW_TAG_subrange_type) | |
11772 | { | |
f792889a | 11773 | struct type *child_type = read_type_die (child_die, cu); |
9a619af0 | 11774 | |
f792889a | 11775 | if (child_type != NULL) |
a02abb62 | 11776 | { |
0963b4bd MS |
11777 | /* The range type was succesfully read. Save it for the |
11778 | array type creation. */ | |
a02abb62 JB |
11779 | if ((ndim % DW_FIELD_ALLOC_CHUNK) == 0) |
11780 | { | |
11781 | range_types = (struct type **) | |
11782 | xrealloc (range_types, (ndim + DW_FIELD_ALLOC_CHUNK) | |
11783 | * sizeof (struct type *)); | |
11784 | if (ndim == 0) | |
11785 | make_cleanup (free_current_contents, &range_types); | |
11786 | } | |
f792889a | 11787 | range_types[ndim++] = child_type; |
a02abb62 | 11788 | } |
c906108c SS |
11789 | } |
11790 | child_die = sibling_die (child_die); | |
11791 | } | |
11792 | ||
11793 | /* Dwarf2 dimensions are output from left to right, create the | |
11794 | necessary array types in backwards order. */ | |
7ca2d3a3 | 11795 | |
c906108c | 11796 | type = element_type; |
7ca2d3a3 DL |
11797 | |
11798 | if (read_array_order (die, cu) == DW_ORD_col_major) | |
11799 | { | |
11800 | int i = 0; | |
9a619af0 | 11801 | |
7ca2d3a3 DL |
11802 | while (i < ndim) |
11803 | type = create_array_type (NULL, type, range_types[i++]); | |
11804 | } | |
11805 | else | |
11806 | { | |
11807 | while (ndim-- > 0) | |
11808 | type = create_array_type (NULL, type, range_types[ndim]); | |
11809 | } | |
c906108c | 11810 | |
f5f8a009 EZ |
11811 | /* Understand Dwarf2 support for vector types (like they occur on |
11812 | the PowerPC w/ AltiVec). Gcc just adds another attribute to the | |
11813 | array type. This is not part of the Dwarf2/3 standard yet, but a | |
11814 | custom vendor extension. The main difference between a regular | |
11815 | array and the vector variant is that vectors are passed by value | |
11816 | to functions. */ | |
e142c38c | 11817 | attr = dwarf2_attr (die, DW_AT_GNU_vector, cu); |
f5f8a009 | 11818 | if (attr) |
ea37ba09 | 11819 | make_vector_type (type); |
f5f8a009 | 11820 | |
dbc98a8b KW |
11821 | /* The DIE may have DW_AT_byte_size set. For example an OpenCL |
11822 | implementation may choose to implement triple vectors using this | |
11823 | attribute. */ | |
11824 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
11825 | if (attr) | |
11826 | { | |
11827 | if (DW_UNSND (attr) >= TYPE_LENGTH (type)) | |
11828 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
11829 | else | |
3e43a32a MS |
11830 | complaint (&symfile_complaints, |
11831 | _("DW_AT_byte_size for array type smaller " | |
11832 | "than the total size of elements")); | |
dbc98a8b KW |
11833 | } |
11834 | ||
39cbfefa DJ |
11835 | name = dwarf2_name (die, cu); |
11836 | if (name) | |
11837 | TYPE_NAME (type) = name; | |
6e70227d | 11838 | |
0963b4bd | 11839 | /* Install the type in the die. */ |
7e314c57 JK |
11840 | set_die_type (die, type, cu); |
11841 | ||
11842 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
11843 | set_descriptive_type (type, die, cu); |
11844 | ||
c906108c SS |
11845 | do_cleanups (back_to); |
11846 | ||
7e314c57 | 11847 | return type; |
c906108c SS |
11848 | } |
11849 | ||
7ca2d3a3 | 11850 | static enum dwarf_array_dim_ordering |
6e70227d | 11851 | read_array_order (struct die_info *die, struct dwarf2_cu *cu) |
7ca2d3a3 DL |
11852 | { |
11853 | struct attribute *attr; | |
11854 | ||
11855 | attr = dwarf2_attr (die, DW_AT_ordering, cu); | |
11856 | ||
11857 | if (attr) return DW_SND (attr); | |
11858 | ||
0963b4bd MS |
11859 | /* GNU F77 is a special case, as at 08/2004 array type info is the |
11860 | opposite order to the dwarf2 specification, but data is still | |
11861 | laid out as per normal fortran. | |
7ca2d3a3 | 11862 | |
0963b4bd MS |
11863 | FIXME: dsl/2004-8-20: If G77 is ever fixed, this will also need |
11864 | version checking. */ | |
7ca2d3a3 | 11865 | |
905e0470 PM |
11866 | if (cu->language == language_fortran |
11867 | && cu->producer && strstr (cu->producer, "GNU F77")) | |
7ca2d3a3 DL |
11868 | { |
11869 | return DW_ORD_row_major; | |
11870 | } | |
11871 | ||
6e70227d | 11872 | switch (cu->language_defn->la_array_ordering) |
7ca2d3a3 DL |
11873 | { |
11874 | case array_column_major: | |
11875 | return DW_ORD_col_major; | |
11876 | case array_row_major: | |
11877 | default: | |
11878 | return DW_ORD_row_major; | |
11879 | }; | |
11880 | } | |
11881 | ||
72019c9c | 11882 | /* Extract all information from a DW_TAG_set_type DIE and put it in |
0963b4bd | 11883 | the DIE's type field. */ |
72019c9c | 11884 | |
f792889a | 11885 | static struct type * |
72019c9c GM |
11886 | read_set_type (struct die_info *die, struct dwarf2_cu *cu) |
11887 | { | |
7e314c57 JK |
11888 | struct type *domain_type, *set_type; |
11889 | struct attribute *attr; | |
f792889a | 11890 | |
7e314c57 JK |
11891 | domain_type = die_type (die, cu); |
11892 | ||
11893 | /* The die_type call above may have already set the type for this DIE. */ | |
11894 | set_type = get_die_type (die, cu); | |
11895 | if (set_type) | |
11896 | return set_type; | |
11897 | ||
11898 | set_type = create_set_type (NULL, domain_type); | |
11899 | ||
11900 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
d09039dd PM |
11901 | if (attr) |
11902 | TYPE_LENGTH (set_type) = DW_UNSND (attr); | |
7e314c57 | 11903 | |
f792889a | 11904 | return set_die_type (die, set_type, cu); |
72019c9c | 11905 | } |
7ca2d3a3 | 11906 | |
0971de02 TT |
11907 | /* A helper for read_common_block that creates a locexpr baton. |
11908 | SYM is the symbol which we are marking as computed. | |
11909 | COMMON_DIE is the DIE for the common block. | |
11910 | COMMON_LOC is the location expression attribute for the common | |
11911 | block itself. | |
11912 | MEMBER_LOC is the location expression attribute for the particular | |
11913 | member of the common block that we are processing. | |
11914 | CU is the CU from which the above come. */ | |
11915 | ||
11916 | static void | |
11917 | mark_common_block_symbol_computed (struct symbol *sym, | |
11918 | struct die_info *common_die, | |
11919 | struct attribute *common_loc, | |
11920 | struct attribute *member_loc, | |
11921 | struct dwarf2_cu *cu) | |
11922 | { | |
11923 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
11924 | struct dwarf2_locexpr_baton *baton; | |
11925 | gdb_byte *ptr; | |
11926 | unsigned int cu_off; | |
11927 | enum bfd_endian byte_order = gdbarch_byte_order (get_objfile_arch (objfile)); | |
11928 | LONGEST offset = 0; | |
11929 | ||
11930 | gdb_assert (common_loc && member_loc); | |
11931 | gdb_assert (attr_form_is_block (common_loc)); | |
11932 | gdb_assert (attr_form_is_block (member_loc) | |
11933 | || attr_form_is_constant (member_loc)); | |
11934 | ||
11935 | baton = obstack_alloc (&objfile->objfile_obstack, | |
11936 | sizeof (struct dwarf2_locexpr_baton)); | |
11937 | baton->per_cu = cu->per_cu; | |
11938 | gdb_assert (baton->per_cu); | |
11939 | ||
11940 | baton->size = 5 /* DW_OP_call4 */ + 1 /* DW_OP_plus */; | |
11941 | ||
11942 | if (attr_form_is_constant (member_loc)) | |
11943 | { | |
11944 | offset = dwarf2_get_attr_constant_value (member_loc, 0); | |
11945 | baton->size += 1 /* DW_OP_addr */ + cu->header.addr_size; | |
11946 | } | |
11947 | else | |
11948 | baton->size += DW_BLOCK (member_loc)->size; | |
11949 | ||
11950 | ptr = obstack_alloc (&objfile->objfile_obstack, baton->size); | |
11951 | baton->data = ptr; | |
11952 | ||
11953 | *ptr++ = DW_OP_call4; | |
11954 | cu_off = common_die->offset.sect_off - cu->per_cu->offset.sect_off; | |
11955 | store_unsigned_integer (ptr, 4, byte_order, cu_off); | |
11956 | ptr += 4; | |
11957 | ||
11958 | if (attr_form_is_constant (member_loc)) | |
11959 | { | |
11960 | *ptr++ = DW_OP_addr; | |
11961 | store_unsigned_integer (ptr, cu->header.addr_size, byte_order, offset); | |
11962 | ptr += cu->header.addr_size; | |
11963 | } | |
11964 | else | |
11965 | { | |
11966 | /* We have to copy the data here, because DW_OP_call4 will only | |
11967 | use a DW_AT_location attribute. */ | |
11968 | memcpy (ptr, DW_BLOCK (member_loc)->data, DW_BLOCK (member_loc)->size); | |
11969 | ptr += DW_BLOCK (member_loc)->size; | |
11970 | } | |
11971 | ||
11972 | *ptr++ = DW_OP_plus; | |
11973 | gdb_assert (ptr - baton->data == baton->size); | |
11974 | ||
0971de02 | 11975 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 11976 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
0971de02 TT |
11977 | } |
11978 | ||
4357ac6c TT |
11979 | /* Create appropriate locally-scoped variables for all the |
11980 | DW_TAG_common_block entries. Also create a struct common_block | |
11981 | listing all such variables for `info common'. COMMON_BLOCK_DOMAIN | |
11982 | is used to sepate the common blocks name namespace from regular | |
11983 | variable names. */ | |
c906108c SS |
11984 | |
11985 | static void | |
e7c27a73 | 11986 | read_common_block (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 11987 | { |
0971de02 TT |
11988 | struct attribute *attr; |
11989 | ||
11990 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
11991 | if (attr) | |
11992 | { | |
11993 | /* Support the .debug_loc offsets. */ | |
11994 | if (attr_form_is_block (attr)) | |
11995 | { | |
11996 | /* Ok. */ | |
11997 | } | |
11998 | else if (attr_form_is_section_offset (attr)) | |
11999 | { | |
12000 | dwarf2_complex_location_expr_complaint (); | |
12001 | attr = NULL; | |
12002 | } | |
12003 | else | |
12004 | { | |
12005 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", | |
12006 | "common block member"); | |
12007 | attr = NULL; | |
12008 | } | |
12009 | } | |
12010 | ||
639d11d3 | 12011 | if (die->child != NULL) |
c906108c | 12012 | { |
4357ac6c TT |
12013 | struct objfile *objfile = cu->objfile; |
12014 | struct die_info *child_die; | |
12015 | size_t n_entries = 0, size; | |
12016 | struct common_block *common_block; | |
12017 | struct symbol *sym; | |
74ac6d43 | 12018 | |
4357ac6c TT |
12019 | for (child_die = die->child; |
12020 | child_die && child_die->tag; | |
12021 | child_die = sibling_die (child_die)) | |
12022 | ++n_entries; | |
12023 | ||
12024 | size = (sizeof (struct common_block) | |
12025 | + (n_entries - 1) * sizeof (struct symbol *)); | |
12026 | common_block = obstack_alloc (&objfile->objfile_obstack, size); | |
12027 | memset (common_block->contents, 0, n_entries * sizeof (struct symbol *)); | |
12028 | common_block->n_entries = 0; | |
12029 | ||
12030 | for (child_die = die->child; | |
12031 | child_die && child_die->tag; | |
12032 | child_die = sibling_die (child_die)) | |
12033 | { | |
12034 | /* Create the symbol in the DW_TAG_common_block block in the current | |
12035 | symbol scope. */ | |
e7c27a73 | 12036 | sym = new_symbol (child_die, NULL, cu); |
0971de02 TT |
12037 | if (sym != NULL) |
12038 | { | |
12039 | struct attribute *member_loc; | |
12040 | ||
12041 | common_block->contents[common_block->n_entries++] = sym; | |
12042 | ||
12043 | member_loc = dwarf2_attr (child_die, DW_AT_data_member_location, | |
12044 | cu); | |
12045 | if (member_loc) | |
12046 | { | |
12047 | /* GDB has handled this for a long time, but it is | |
12048 | not specified by DWARF. It seems to have been | |
12049 | emitted by gfortran at least as recently as: | |
12050 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23057. */ | |
12051 | complaint (&symfile_complaints, | |
12052 | _("Variable in common block has " | |
12053 | "DW_AT_data_member_location " | |
12054 | "- DIE at 0x%x [in module %s]"), | |
12055 | child_die->offset.sect_off, cu->objfile->name); | |
12056 | ||
12057 | if (attr_form_is_section_offset (member_loc)) | |
12058 | dwarf2_complex_location_expr_complaint (); | |
12059 | else if (attr_form_is_constant (member_loc) | |
12060 | || attr_form_is_block (member_loc)) | |
12061 | { | |
12062 | if (attr) | |
12063 | mark_common_block_symbol_computed (sym, die, attr, | |
12064 | member_loc, cu); | |
12065 | } | |
12066 | else | |
12067 | dwarf2_complex_location_expr_complaint (); | |
12068 | } | |
12069 | } | |
c906108c | 12070 | } |
4357ac6c TT |
12071 | |
12072 | sym = new_symbol (die, objfile_type (objfile)->builtin_void, cu); | |
12073 | SYMBOL_VALUE_COMMON_BLOCK (sym) = common_block; | |
c906108c SS |
12074 | } |
12075 | } | |
12076 | ||
0114d602 | 12077 | /* Create a type for a C++ namespace. */ |
d9fa45fe | 12078 | |
0114d602 DJ |
12079 | static struct type * |
12080 | read_namespace_type (struct die_info *die, struct dwarf2_cu *cu) | |
d9fa45fe | 12081 | { |
e7c27a73 | 12082 | struct objfile *objfile = cu->objfile; |
0114d602 | 12083 | const char *previous_prefix, *name; |
9219021c | 12084 | int is_anonymous; |
0114d602 DJ |
12085 | struct type *type; |
12086 | ||
12087 | /* For extensions, reuse the type of the original namespace. */ | |
12088 | if (dwarf2_attr (die, DW_AT_extension, cu) != NULL) | |
12089 | { | |
12090 | struct die_info *ext_die; | |
12091 | struct dwarf2_cu *ext_cu = cu; | |
9a619af0 | 12092 | |
0114d602 DJ |
12093 | ext_die = dwarf2_extension (die, &ext_cu); |
12094 | type = read_type_die (ext_die, ext_cu); | |
9dc481d3 DE |
12095 | |
12096 | /* EXT_CU may not be the same as CU. | |
12097 | Ensure TYPE is recorded in CU's type_hash table. */ | |
0114d602 DJ |
12098 | return set_die_type (die, type, cu); |
12099 | } | |
9219021c | 12100 | |
e142c38c | 12101 | name = namespace_name (die, &is_anonymous, cu); |
9219021c DC |
12102 | |
12103 | /* Now build the name of the current namespace. */ | |
12104 | ||
0114d602 DJ |
12105 | previous_prefix = determine_prefix (die, cu); |
12106 | if (previous_prefix[0] != '\0') | |
12107 | name = typename_concat (&objfile->objfile_obstack, | |
f55ee35c | 12108 | previous_prefix, name, 0, cu); |
0114d602 DJ |
12109 | |
12110 | /* Create the type. */ | |
12111 | type = init_type (TYPE_CODE_NAMESPACE, 0, 0, NULL, | |
12112 | objfile); | |
abee88f2 | 12113 | TYPE_NAME (type) = name; |
0114d602 DJ |
12114 | TYPE_TAG_NAME (type) = TYPE_NAME (type); |
12115 | ||
60531b24 | 12116 | return set_die_type (die, type, cu); |
0114d602 DJ |
12117 | } |
12118 | ||
12119 | /* Read a C++ namespace. */ | |
12120 | ||
12121 | static void | |
12122 | read_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
12123 | { | |
12124 | struct objfile *objfile = cu->objfile; | |
0114d602 | 12125 | int is_anonymous; |
9219021c | 12126 | |
5c4e30ca DC |
12127 | /* Add a symbol associated to this if we haven't seen the namespace |
12128 | before. Also, add a using directive if it's an anonymous | |
12129 | namespace. */ | |
9219021c | 12130 | |
f2f0e013 | 12131 | if (dwarf2_attr (die, DW_AT_extension, cu) == NULL) |
5c4e30ca DC |
12132 | { |
12133 | struct type *type; | |
12134 | ||
0114d602 | 12135 | type = read_type_die (die, cu); |
e7c27a73 | 12136 | new_symbol (die, type, cu); |
5c4e30ca | 12137 | |
e8e80198 | 12138 | namespace_name (die, &is_anonymous, cu); |
5c4e30ca | 12139 | if (is_anonymous) |
0114d602 DJ |
12140 | { |
12141 | const char *previous_prefix = determine_prefix (die, cu); | |
9a619af0 | 12142 | |
c0cc3a76 | 12143 | cp_add_using_directive (previous_prefix, TYPE_NAME (type), NULL, |
12aaed36 | 12144 | NULL, NULL, 0, &objfile->objfile_obstack); |
0114d602 | 12145 | } |
5c4e30ca | 12146 | } |
9219021c | 12147 | |
639d11d3 | 12148 | if (die->child != NULL) |
d9fa45fe | 12149 | { |
639d11d3 | 12150 | struct die_info *child_die = die->child; |
6e70227d | 12151 | |
d9fa45fe DC |
12152 | while (child_die && child_die->tag) |
12153 | { | |
e7c27a73 | 12154 | process_die (child_die, cu); |
d9fa45fe DC |
12155 | child_die = sibling_die (child_die); |
12156 | } | |
12157 | } | |
38d518c9 EZ |
12158 | } |
12159 | ||
f55ee35c JK |
12160 | /* Read a Fortran module as type. This DIE can be only a declaration used for |
12161 | imported module. Still we need that type as local Fortran "use ... only" | |
12162 | declaration imports depend on the created type in determine_prefix. */ | |
12163 | ||
12164 | static struct type * | |
12165 | read_module_type (struct die_info *die, struct dwarf2_cu *cu) | |
12166 | { | |
12167 | struct objfile *objfile = cu->objfile; | |
15d034d0 | 12168 | const char *module_name; |
f55ee35c JK |
12169 | struct type *type; |
12170 | ||
12171 | module_name = dwarf2_name (die, cu); | |
12172 | if (!module_name) | |
3e43a32a MS |
12173 | complaint (&symfile_complaints, |
12174 | _("DW_TAG_module has no name, offset 0x%x"), | |
b64f50a1 | 12175 | die->offset.sect_off); |
f55ee35c JK |
12176 | type = init_type (TYPE_CODE_MODULE, 0, 0, module_name, objfile); |
12177 | ||
12178 | /* determine_prefix uses TYPE_TAG_NAME. */ | |
12179 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
12180 | ||
12181 | return set_die_type (die, type, cu); | |
12182 | } | |
12183 | ||
5d7cb8df JK |
12184 | /* Read a Fortran module. */ |
12185 | ||
12186 | static void | |
12187 | read_module (struct die_info *die, struct dwarf2_cu *cu) | |
12188 | { | |
12189 | struct die_info *child_die = die->child; | |
12190 | ||
5d7cb8df JK |
12191 | while (child_die && child_die->tag) |
12192 | { | |
12193 | process_die (child_die, cu); | |
12194 | child_die = sibling_die (child_die); | |
12195 | } | |
12196 | } | |
12197 | ||
38d518c9 EZ |
12198 | /* Return the name of the namespace represented by DIE. Set |
12199 | *IS_ANONYMOUS to tell whether or not the namespace is an anonymous | |
12200 | namespace. */ | |
12201 | ||
12202 | static const char * | |
e142c38c | 12203 | namespace_name (struct die_info *die, int *is_anonymous, struct dwarf2_cu *cu) |
38d518c9 EZ |
12204 | { |
12205 | struct die_info *current_die; | |
12206 | const char *name = NULL; | |
12207 | ||
12208 | /* Loop through the extensions until we find a name. */ | |
12209 | ||
12210 | for (current_die = die; | |
12211 | current_die != NULL; | |
f2f0e013 | 12212 | current_die = dwarf2_extension (die, &cu)) |
38d518c9 | 12213 | { |
e142c38c | 12214 | name = dwarf2_name (current_die, cu); |
38d518c9 EZ |
12215 | if (name != NULL) |
12216 | break; | |
12217 | } | |
12218 | ||
12219 | /* Is it an anonymous namespace? */ | |
12220 | ||
12221 | *is_anonymous = (name == NULL); | |
12222 | if (*is_anonymous) | |
2b1dbab0 | 12223 | name = CP_ANONYMOUS_NAMESPACE_STR; |
38d518c9 EZ |
12224 | |
12225 | return name; | |
d9fa45fe DC |
12226 | } |
12227 | ||
c906108c SS |
12228 | /* Extract all information from a DW_TAG_pointer_type DIE and add to |
12229 | the user defined type vector. */ | |
12230 | ||
f792889a | 12231 | static struct type * |
e7c27a73 | 12232 | read_tag_pointer_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 12233 | { |
5e2b427d | 12234 | struct gdbarch *gdbarch = get_objfile_arch (cu->objfile); |
e7c27a73 | 12235 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 12236 | struct type *type; |
8b2dbe47 KB |
12237 | struct attribute *attr_byte_size; |
12238 | struct attribute *attr_address_class; | |
12239 | int byte_size, addr_class; | |
7e314c57 JK |
12240 | struct type *target_type; |
12241 | ||
12242 | target_type = die_type (die, cu); | |
c906108c | 12243 | |
7e314c57 JK |
12244 | /* The die_type call above may have already set the type for this DIE. */ |
12245 | type = get_die_type (die, cu); | |
12246 | if (type) | |
12247 | return type; | |
12248 | ||
12249 | type = lookup_pointer_type (target_type); | |
8b2dbe47 | 12250 | |
e142c38c | 12251 | attr_byte_size = dwarf2_attr (die, DW_AT_byte_size, cu); |
8b2dbe47 KB |
12252 | if (attr_byte_size) |
12253 | byte_size = DW_UNSND (attr_byte_size); | |
c906108c | 12254 | else |
8b2dbe47 KB |
12255 | byte_size = cu_header->addr_size; |
12256 | ||
e142c38c | 12257 | attr_address_class = dwarf2_attr (die, DW_AT_address_class, cu); |
8b2dbe47 KB |
12258 | if (attr_address_class) |
12259 | addr_class = DW_UNSND (attr_address_class); | |
12260 | else | |
12261 | addr_class = DW_ADDR_none; | |
12262 | ||
12263 | /* If the pointer size or address class is different than the | |
12264 | default, create a type variant marked as such and set the | |
12265 | length accordingly. */ | |
12266 | if (TYPE_LENGTH (type) != byte_size || addr_class != DW_ADDR_none) | |
c906108c | 12267 | { |
5e2b427d | 12268 | if (gdbarch_address_class_type_flags_p (gdbarch)) |
8b2dbe47 KB |
12269 | { |
12270 | int type_flags; | |
12271 | ||
849957d9 | 12272 | type_flags = gdbarch_address_class_type_flags |
5e2b427d | 12273 | (gdbarch, byte_size, addr_class); |
876cecd0 TT |
12274 | gdb_assert ((type_flags & ~TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL) |
12275 | == 0); | |
8b2dbe47 KB |
12276 | type = make_type_with_address_space (type, type_flags); |
12277 | } | |
12278 | else if (TYPE_LENGTH (type) != byte_size) | |
12279 | { | |
3e43a32a MS |
12280 | complaint (&symfile_complaints, |
12281 | _("invalid pointer size %d"), byte_size); | |
8b2dbe47 | 12282 | } |
6e70227d | 12283 | else |
9a619af0 MS |
12284 | { |
12285 | /* Should we also complain about unhandled address classes? */ | |
12286 | } | |
c906108c | 12287 | } |
8b2dbe47 KB |
12288 | |
12289 | TYPE_LENGTH (type) = byte_size; | |
f792889a | 12290 | return set_die_type (die, type, cu); |
c906108c SS |
12291 | } |
12292 | ||
12293 | /* Extract all information from a DW_TAG_ptr_to_member_type DIE and add to | |
12294 | the user defined type vector. */ | |
12295 | ||
f792889a | 12296 | static struct type * |
e7c27a73 | 12297 | read_tag_ptr_to_member_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
12298 | { |
12299 | struct type *type; | |
12300 | struct type *to_type; | |
12301 | struct type *domain; | |
12302 | ||
e7c27a73 DJ |
12303 | to_type = die_type (die, cu); |
12304 | domain = die_containing_type (die, cu); | |
0d5de010 | 12305 | |
7e314c57 JK |
12306 | /* The calls above may have already set the type for this DIE. */ |
12307 | type = get_die_type (die, cu); | |
12308 | if (type) | |
12309 | return type; | |
12310 | ||
0d5de010 DJ |
12311 | if (TYPE_CODE (check_typedef (to_type)) == TYPE_CODE_METHOD) |
12312 | type = lookup_methodptr_type (to_type); | |
7078baeb TT |
12313 | else if (TYPE_CODE (check_typedef (to_type)) == TYPE_CODE_FUNC) |
12314 | { | |
12315 | struct type *new_type = alloc_type (cu->objfile); | |
12316 | ||
12317 | smash_to_method_type (new_type, domain, TYPE_TARGET_TYPE (to_type), | |
12318 | TYPE_FIELDS (to_type), TYPE_NFIELDS (to_type), | |
12319 | TYPE_VARARGS (to_type)); | |
12320 | type = lookup_methodptr_type (new_type); | |
12321 | } | |
0d5de010 DJ |
12322 | else |
12323 | type = lookup_memberptr_type (to_type, domain); | |
c906108c | 12324 | |
f792889a | 12325 | return set_die_type (die, type, cu); |
c906108c SS |
12326 | } |
12327 | ||
12328 | /* Extract all information from a DW_TAG_reference_type DIE and add to | |
12329 | the user defined type vector. */ | |
12330 | ||
f792889a | 12331 | static struct type * |
e7c27a73 | 12332 | read_tag_reference_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 12333 | { |
e7c27a73 | 12334 | struct comp_unit_head *cu_header = &cu->header; |
7e314c57 | 12335 | struct type *type, *target_type; |
c906108c SS |
12336 | struct attribute *attr; |
12337 | ||
7e314c57 JK |
12338 | target_type = die_type (die, cu); |
12339 | ||
12340 | /* The die_type call above may have already set the type for this DIE. */ | |
12341 | type = get_die_type (die, cu); | |
12342 | if (type) | |
12343 | return type; | |
12344 | ||
12345 | type = lookup_reference_type (target_type); | |
e142c38c | 12346 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
12347 | if (attr) |
12348 | { | |
12349 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
12350 | } | |
12351 | else | |
12352 | { | |
107d2387 | 12353 | TYPE_LENGTH (type) = cu_header->addr_size; |
c906108c | 12354 | } |
f792889a | 12355 | return set_die_type (die, type, cu); |
c906108c SS |
12356 | } |
12357 | ||
f792889a | 12358 | static struct type * |
e7c27a73 | 12359 | read_tag_const_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 12360 | { |
f792889a | 12361 | struct type *base_type, *cv_type; |
c906108c | 12362 | |
e7c27a73 | 12363 | base_type = die_type (die, cu); |
7e314c57 JK |
12364 | |
12365 | /* The die_type call above may have already set the type for this DIE. */ | |
12366 | cv_type = get_die_type (die, cu); | |
12367 | if (cv_type) | |
12368 | return cv_type; | |
12369 | ||
2f608a3a KW |
12370 | /* In case the const qualifier is applied to an array type, the element type |
12371 | is so qualified, not the array type (section 6.7.3 of C99). */ | |
12372 | if (TYPE_CODE (base_type) == TYPE_CODE_ARRAY) | |
12373 | { | |
12374 | struct type *el_type, *inner_array; | |
12375 | ||
12376 | base_type = copy_type (base_type); | |
12377 | inner_array = base_type; | |
12378 | ||
12379 | while (TYPE_CODE (TYPE_TARGET_TYPE (inner_array)) == TYPE_CODE_ARRAY) | |
12380 | { | |
12381 | TYPE_TARGET_TYPE (inner_array) = | |
12382 | copy_type (TYPE_TARGET_TYPE (inner_array)); | |
12383 | inner_array = TYPE_TARGET_TYPE (inner_array); | |
12384 | } | |
12385 | ||
12386 | el_type = TYPE_TARGET_TYPE (inner_array); | |
12387 | TYPE_TARGET_TYPE (inner_array) = | |
12388 | make_cv_type (1, TYPE_VOLATILE (el_type), el_type, NULL); | |
12389 | ||
12390 | return set_die_type (die, base_type, cu); | |
12391 | } | |
12392 | ||
f792889a DJ |
12393 | cv_type = make_cv_type (1, TYPE_VOLATILE (base_type), base_type, 0); |
12394 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
12395 | } |
12396 | ||
f792889a | 12397 | static struct type * |
e7c27a73 | 12398 | read_tag_volatile_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 12399 | { |
f792889a | 12400 | struct type *base_type, *cv_type; |
c906108c | 12401 | |
e7c27a73 | 12402 | base_type = die_type (die, cu); |
7e314c57 JK |
12403 | |
12404 | /* The die_type call above may have already set the type for this DIE. */ | |
12405 | cv_type = get_die_type (die, cu); | |
12406 | if (cv_type) | |
12407 | return cv_type; | |
12408 | ||
f792889a DJ |
12409 | cv_type = make_cv_type (TYPE_CONST (base_type), 1, base_type, 0); |
12410 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
12411 | } |
12412 | ||
06d66ee9 TT |
12413 | /* Handle DW_TAG_restrict_type. */ |
12414 | ||
12415 | static struct type * | |
12416 | read_tag_restrict_type (struct die_info *die, struct dwarf2_cu *cu) | |
12417 | { | |
12418 | struct type *base_type, *cv_type; | |
12419 | ||
12420 | base_type = die_type (die, cu); | |
12421 | ||
12422 | /* The die_type call above may have already set the type for this DIE. */ | |
12423 | cv_type = get_die_type (die, cu); | |
12424 | if (cv_type) | |
12425 | return cv_type; | |
12426 | ||
12427 | cv_type = make_restrict_type (base_type); | |
12428 | return set_die_type (die, cv_type, cu); | |
12429 | } | |
12430 | ||
c906108c SS |
12431 | /* Extract all information from a DW_TAG_string_type DIE and add to |
12432 | the user defined type vector. It isn't really a user defined type, | |
12433 | but it behaves like one, with other DIE's using an AT_user_def_type | |
12434 | attribute to reference it. */ | |
12435 | ||
f792889a | 12436 | static struct type * |
e7c27a73 | 12437 | read_tag_string_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 12438 | { |
e7c27a73 | 12439 | struct objfile *objfile = cu->objfile; |
3b7538c0 | 12440 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
12441 | struct type *type, *range_type, *index_type, *char_type; |
12442 | struct attribute *attr; | |
12443 | unsigned int length; | |
12444 | ||
e142c38c | 12445 | attr = dwarf2_attr (die, DW_AT_string_length, cu); |
c906108c SS |
12446 | if (attr) |
12447 | { | |
12448 | length = DW_UNSND (attr); | |
12449 | } | |
12450 | else | |
12451 | { | |
0963b4bd | 12452 | /* Check for the DW_AT_byte_size attribute. */ |
e142c38c | 12453 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
b21b22e0 PS |
12454 | if (attr) |
12455 | { | |
12456 | length = DW_UNSND (attr); | |
12457 | } | |
12458 | else | |
12459 | { | |
12460 | length = 1; | |
12461 | } | |
c906108c | 12462 | } |
6ccb9162 | 12463 | |
46bf5051 | 12464 | index_type = objfile_type (objfile)->builtin_int; |
c906108c | 12465 | range_type = create_range_type (NULL, index_type, 1, length); |
3b7538c0 UW |
12466 | char_type = language_string_char_type (cu->language_defn, gdbarch); |
12467 | type = create_string_type (NULL, char_type, range_type); | |
6ccb9162 | 12468 | |
f792889a | 12469 | return set_die_type (die, type, cu); |
c906108c SS |
12470 | } |
12471 | ||
12472 | /* Handle DIES due to C code like: | |
12473 | ||
12474 | struct foo | |
c5aa993b JM |
12475 | { |
12476 | int (*funcp)(int a, long l); | |
12477 | int b; | |
12478 | }; | |
c906108c | 12479 | |
0963b4bd | 12480 | ('funcp' generates a DW_TAG_subroutine_type DIE). */ |
c906108c | 12481 | |
f792889a | 12482 | static struct type * |
e7c27a73 | 12483 | read_subroutine_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 12484 | { |
bb5ed363 | 12485 | struct objfile *objfile = cu->objfile; |
0963b4bd MS |
12486 | struct type *type; /* Type that this function returns. */ |
12487 | struct type *ftype; /* Function that returns above type. */ | |
c906108c SS |
12488 | struct attribute *attr; |
12489 | ||
e7c27a73 | 12490 | type = die_type (die, cu); |
7e314c57 JK |
12491 | |
12492 | /* The die_type call above may have already set the type for this DIE. */ | |
12493 | ftype = get_die_type (die, cu); | |
12494 | if (ftype) | |
12495 | return ftype; | |
12496 | ||
0c8b41f1 | 12497 | ftype = lookup_function_type (type); |
c906108c | 12498 | |
5b8101ae | 12499 | /* All functions in C++, Pascal and Java have prototypes. */ |
e142c38c | 12500 | attr = dwarf2_attr (die, DW_AT_prototyped, cu); |
c906108c | 12501 | if ((attr && (DW_UNSND (attr) != 0)) |
987504bb | 12502 | || cu->language == language_cplus |
5b8101ae PM |
12503 | || cu->language == language_java |
12504 | || cu->language == language_pascal) | |
876cecd0 | 12505 | TYPE_PROTOTYPED (ftype) = 1; |
a6c727b2 DJ |
12506 | else if (producer_is_realview (cu->producer)) |
12507 | /* RealView does not emit DW_AT_prototyped. We can not | |
12508 | distinguish prototyped and unprototyped functions; default to | |
12509 | prototyped, since that is more common in modern code (and | |
12510 | RealView warns about unprototyped functions). */ | |
12511 | TYPE_PROTOTYPED (ftype) = 1; | |
c906108c | 12512 | |
c055b101 CV |
12513 | /* Store the calling convention in the type if it's available in |
12514 | the subroutine die. Otherwise set the calling convention to | |
12515 | the default value DW_CC_normal. */ | |
12516 | attr = dwarf2_attr (die, DW_AT_calling_convention, cu); | |
54fcddd0 UW |
12517 | if (attr) |
12518 | TYPE_CALLING_CONVENTION (ftype) = DW_UNSND (attr); | |
12519 | else if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL")) | |
12520 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_GDB_IBM_OpenCL; | |
12521 | else | |
12522 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_normal; | |
76c10ea2 GM |
12523 | |
12524 | /* We need to add the subroutine type to the die immediately so | |
12525 | we don't infinitely recurse when dealing with parameters | |
0963b4bd | 12526 | declared as the same subroutine type. */ |
76c10ea2 | 12527 | set_die_type (die, ftype, cu); |
6e70227d | 12528 | |
639d11d3 | 12529 | if (die->child != NULL) |
c906108c | 12530 | { |
bb5ed363 | 12531 | struct type *void_type = objfile_type (objfile)->builtin_void; |
c906108c | 12532 | struct die_info *child_die; |
8072405b | 12533 | int nparams, iparams; |
c906108c SS |
12534 | |
12535 | /* Count the number of parameters. | |
12536 | FIXME: GDB currently ignores vararg functions, but knows about | |
12537 | vararg member functions. */ | |
8072405b | 12538 | nparams = 0; |
639d11d3 | 12539 | child_die = die->child; |
c906108c SS |
12540 | while (child_die && child_die->tag) |
12541 | { | |
12542 | if (child_die->tag == DW_TAG_formal_parameter) | |
12543 | nparams++; | |
12544 | else if (child_die->tag == DW_TAG_unspecified_parameters) | |
876cecd0 | 12545 | TYPE_VARARGS (ftype) = 1; |
c906108c SS |
12546 | child_die = sibling_die (child_die); |
12547 | } | |
12548 | ||
12549 | /* Allocate storage for parameters and fill them in. */ | |
12550 | TYPE_NFIELDS (ftype) = nparams; | |
12551 | TYPE_FIELDS (ftype) = (struct field *) | |
ae5a43e0 | 12552 | TYPE_ZALLOC (ftype, nparams * sizeof (struct field)); |
c906108c | 12553 | |
8072405b JK |
12554 | /* TYPE_FIELD_TYPE must never be NULL. Pre-fill the array to ensure it |
12555 | even if we error out during the parameters reading below. */ | |
12556 | for (iparams = 0; iparams < nparams; iparams++) | |
12557 | TYPE_FIELD_TYPE (ftype, iparams) = void_type; | |
12558 | ||
12559 | iparams = 0; | |
639d11d3 | 12560 | child_die = die->child; |
c906108c SS |
12561 | while (child_die && child_die->tag) |
12562 | { | |
12563 | if (child_die->tag == DW_TAG_formal_parameter) | |
12564 | { | |
3ce3b1ba PA |
12565 | struct type *arg_type; |
12566 | ||
12567 | /* DWARF version 2 has no clean way to discern C++ | |
12568 | static and non-static member functions. G++ helps | |
12569 | GDB by marking the first parameter for non-static | |
12570 | member functions (which is the this pointer) as | |
12571 | artificial. We pass this information to | |
12572 | dwarf2_add_member_fn via TYPE_FIELD_ARTIFICIAL. | |
12573 | ||
12574 | DWARF version 3 added DW_AT_object_pointer, which GCC | |
12575 | 4.5 does not yet generate. */ | |
e142c38c | 12576 | attr = dwarf2_attr (child_die, DW_AT_artificial, cu); |
c906108c SS |
12577 | if (attr) |
12578 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = DW_UNSND (attr); | |
12579 | else | |
418835cc KS |
12580 | { |
12581 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; | |
12582 | ||
12583 | /* GCC/43521: In java, the formal parameter | |
12584 | "this" is sometimes not marked with DW_AT_artificial. */ | |
12585 | if (cu->language == language_java) | |
12586 | { | |
12587 | const char *name = dwarf2_name (child_die, cu); | |
9a619af0 | 12588 | |
418835cc KS |
12589 | if (name && !strcmp (name, "this")) |
12590 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 1; | |
12591 | } | |
12592 | } | |
3ce3b1ba PA |
12593 | arg_type = die_type (child_die, cu); |
12594 | ||
12595 | /* RealView does not mark THIS as const, which the testsuite | |
12596 | expects. GCC marks THIS as const in method definitions, | |
12597 | but not in the class specifications (GCC PR 43053). */ | |
12598 | if (cu->language == language_cplus && !TYPE_CONST (arg_type) | |
12599 | && TYPE_FIELD_ARTIFICIAL (ftype, iparams)) | |
12600 | { | |
12601 | int is_this = 0; | |
12602 | struct dwarf2_cu *arg_cu = cu; | |
12603 | const char *name = dwarf2_name (child_die, cu); | |
12604 | ||
12605 | attr = dwarf2_attr (die, DW_AT_object_pointer, cu); | |
12606 | if (attr) | |
12607 | { | |
12608 | /* If the compiler emits this, use it. */ | |
12609 | if (follow_die_ref (die, attr, &arg_cu) == child_die) | |
12610 | is_this = 1; | |
12611 | } | |
12612 | else if (name && strcmp (name, "this") == 0) | |
12613 | /* Function definitions will have the argument names. */ | |
12614 | is_this = 1; | |
12615 | else if (name == NULL && iparams == 0) | |
12616 | /* Declarations may not have the names, so like | |
12617 | elsewhere in GDB, assume an artificial first | |
12618 | argument is "this". */ | |
12619 | is_this = 1; | |
12620 | ||
12621 | if (is_this) | |
12622 | arg_type = make_cv_type (1, TYPE_VOLATILE (arg_type), | |
12623 | arg_type, 0); | |
12624 | } | |
12625 | ||
12626 | TYPE_FIELD_TYPE (ftype, iparams) = arg_type; | |
c906108c SS |
12627 | iparams++; |
12628 | } | |
12629 | child_die = sibling_die (child_die); | |
12630 | } | |
12631 | } | |
12632 | ||
76c10ea2 | 12633 | return ftype; |
c906108c SS |
12634 | } |
12635 | ||
f792889a | 12636 | static struct type * |
e7c27a73 | 12637 | read_typedef (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 12638 | { |
e7c27a73 | 12639 | struct objfile *objfile = cu->objfile; |
0114d602 | 12640 | const char *name = NULL; |
3c8e0968 | 12641 | struct type *this_type, *target_type; |
c906108c | 12642 | |
94af9270 | 12643 | name = dwarf2_full_name (NULL, die, cu); |
f792889a | 12644 | this_type = init_type (TYPE_CODE_TYPEDEF, 0, |
0114d602 | 12645 | TYPE_FLAG_TARGET_STUB, NULL, objfile); |
abee88f2 | 12646 | TYPE_NAME (this_type) = name; |
f792889a | 12647 | set_die_type (die, this_type, cu); |
3c8e0968 DE |
12648 | target_type = die_type (die, cu); |
12649 | if (target_type != this_type) | |
12650 | TYPE_TARGET_TYPE (this_type) = target_type; | |
12651 | else | |
12652 | { | |
12653 | /* Self-referential typedefs are, it seems, not allowed by the DWARF | |
12654 | spec and cause infinite loops in GDB. */ | |
12655 | complaint (&symfile_complaints, | |
12656 | _("Self-referential DW_TAG_typedef " | |
12657 | "- DIE at 0x%x [in module %s]"), | |
b64f50a1 | 12658 | die->offset.sect_off, objfile->name); |
3c8e0968 DE |
12659 | TYPE_TARGET_TYPE (this_type) = NULL; |
12660 | } | |
f792889a | 12661 | return this_type; |
c906108c SS |
12662 | } |
12663 | ||
12664 | /* Find a representation of a given base type and install | |
12665 | it in the TYPE field of the die. */ | |
12666 | ||
f792889a | 12667 | static struct type * |
e7c27a73 | 12668 | read_base_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 12669 | { |
e7c27a73 | 12670 | struct objfile *objfile = cu->objfile; |
c906108c SS |
12671 | struct type *type; |
12672 | struct attribute *attr; | |
12673 | int encoding = 0, size = 0; | |
15d034d0 | 12674 | const char *name; |
6ccb9162 UW |
12675 | enum type_code code = TYPE_CODE_INT; |
12676 | int type_flags = 0; | |
12677 | struct type *target_type = NULL; | |
c906108c | 12678 | |
e142c38c | 12679 | attr = dwarf2_attr (die, DW_AT_encoding, cu); |
c906108c SS |
12680 | if (attr) |
12681 | { | |
12682 | encoding = DW_UNSND (attr); | |
12683 | } | |
e142c38c | 12684 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
12685 | if (attr) |
12686 | { | |
12687 | size = DW_UNSND (attr); | |
12688 | } | |
39cbfefa | 12689 | name = dwarf2_name (die, cu); |
6ccb9162 | 12690 | if (!name) |
c906108c | 12691 | { |
6ccb9162 UW |
12692 | complaint (&symfile_complaints, |
12693 | _("DW_AT_name missing from DW_TAG_base_type")); | |
c906108c | 12694 | } |
6ccb9162 UW |
12695 | |
12696 | switch (encoding) | |
c906108c | 12697 | { |
6ccb9162 UW |
12698 | case DW_ATE_address: |
12699 | /* Turn DW_ATE_address into a void * pointer. */ | |
12700 | code = TYPE_CODE_PTR; | |
12701 | type_flags |= TYPE_FLAG_UNSIGNED; | |
12702 | target_type = init_type (TYPE_CODE_VOID, 1, 0, NULL, objfile); | |
12703 | break; | |
12704 | case DW_ATE_boolean: | |
12705 | code = TYPE_CODE_BOOL; | |
12706 | type_flags |= TYPE_FLAG_UNSIGNED; | |
12707 | break; | |
12708 | case DW_ATE_complex_float: | |
12709 | code = TYPE_CODE_COMPLEX; | |
12710 | target_type = init_type (TYPE_CODE_FLT, size / 2, 0, NULL, objfile); | |
12711 | break; | |
12712 | case DW_ATE_decimal_float: | |
12713 | code = TYPE_CODE_DECFLOAT; | |
12714 | break; | |
12715 | case DW_ATE_float: | |
12716 | code = TYPE_CODE_FLT; | |
12717 | break; | |
12718 | case DW_ATE_signed: | |
12719 | break; | |
12720 | case DW_ATE_unsigned: | |
12721 | type_flags |= TYPE_FLAG_UNSIGNED; | |
3b2b8fea TT |
12722 | if (cu->language == language_fortran |
12723 | && name | |
12724 | && strncmp (name, "character(", sizeof ("character(") - 1) == 0) | |
12725 | code = TYPE_CODE_CHAR; | |
6ccb9162 UW |
12726 | break; |
12727 | case DW_ATE_signed_char: | |
6e70227d | 12728 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea TT |
12729 | || cu->language == language_pascal |
12730 | || cu->language == language_fortran) | |
6ccb9162 UW |
12731 | code = TYPE_CODE_CHAR; |
12732 | break; | |
12733 | case DW_ATE_unsigned_char: | |
868a0084 | 12734 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea TT |
12735 | || cu->language == language_pascal |
12736 | || cu->language == language_fortran) | |
6ccb9162 UW |
12737 | code = TYPE_CODE_CHAR; |
12738 | type_flags |= TYPE_FLAG_UNSIGNED; | |
12739 | break; | |
75079b2b TT |
12740 | case DW_ATE_UTF: |
12741 | /* We just treat this as an integer and then recognize the | |
12742 | type by name elsewhere. */ | |
12743 | break; | |
12744 | ||
6ccb9162 UW |
12745 | default: |
12746 | complaint (&symfile_complaints, _("unsupported DW_AT_encoding: '%s'"), | |
12747 | dwarf_type_encoding_name (encoding)); | |
12748 | break; | |
c906108c | 12749 | } |
6ccb9162 | 12750 | |
0114d602 DJ |
12751 | type = init_type (code, size, type_flags, NULL, objfile); |
12752 | TYPE_NAME (type) = name; | |
6ccb9162 UW |
12753 | TYPE_TARGET_TYPE (type) = target_type; |
12754 | ||
0114d602 | 12755 | if (name && strcmp (name, "char") == 0) |
876cecd0 | 12756 | TYPE_NOSIGN (type) = 1; |
0114d602 | 12757 | |
f792889a | 12758 | return set_die_type (die, type, cu); |
c906108c SS |
12759 | } |
12760 | ||
a02abb62 JB |
12761 | /* Read the given DW_AT_subrange DIE. */ |
12762 | ||
f792889a | 12763 | static struct type * |
a02abb62 JB |
12764 | read_subrange_type (struct die_info *die, struct dwarf2_cu *cu) |
12765 | { | |
4c9ad8c2 | 12766 | struct type *base_type, *orig_base_type; |
a02abb62 JB |
12767 | struct type *range_type; |
12768 | struct attribute *attr; | |
4fae6e18 JK |
12769 | LONGEST low, high; |
12770 | int low_default_is_valid; | |
15d034d0 | 12771 | const char *name; |
43bbcdc2 | 12772 | LONGEST negative_mask; |
e77813c8 | 12773 | |
4c9ad8c2 TT |
12774 | orig_base_type = die_type (die, cu); |
12775 | /* If ORIG_BASE_TYPE is a typedef, it will not be TYPE_UNSIGNED, | |
12776 | whereas the real type might be. So, we use ORIG_BASE_TYPE when | |
12777 | creating the range type, but we use the result of check_typedef | |
12778 | when examining properties of the type. */ | |
12779 | base_type = check_typedef (orig_base_type); | |
a02abb62 | 12780 | |
7e314c57 JK |
12781 | /* The die_type call above may have already set the type for this DIE. */ |
12782 | range_type = get_die_type (die, cu); | |
12783 | if (range_type) | |
12784 | return range_type; | |
12785 | ||
4fae6e18 JK |
12786 | /* Set LOW_DEFAULT_IS_VALID if current language and DWARF version allow |
12787 | omitting DW_AT_lower_bound. */ | |
12788 | switch (cu->language) | |
6e70227d | 12789 | { |
4fae6e18 JK |
12790 | case language_c: |
12791 | case language_cplus: | |
12792 | low = 0; | |
12793 | low_default_is_valid = 1; | |
12794 | break; | |
12795 | case language_fortran: | |
12796 | low = 1; | |
12797 | low_default_is_valid = 1; | |
12798 | break; | |
12799 | case language_d: | |
12800 | case language_java: | |
12801 | case language_objc: | |
12802 | low = 0; | |
12803 | low_default_is_valid = (cu->header.version >= 4); | |
12804 | break; | |
12805 | case language_ada: | |
12806 | case language_m2: | |
12807 | case language_pascal: | |
a02abb62 | 12808 | low = 1; |
4fae6e18 JK |
12809 | low_default_is_valid = (cu->header.version >= 4); |
12810 | break; | |
12811 | default: | |
12812 | low = 0; | |
12813 | low_default_is_valid = 0; | |
12814 | break; | |
a02abb62 JB |
12815 | } |
12816 | ||
dd5e6932 DJ |
12817 | /* FIXME: For variable sized arrays either of these could be |
12818 | a variable rather than a constant value. We'll allow it, | |
12819 | but we don't know how to handle it. */ | |
e142c38c | 12820 | attr = dwarf2_attr (die, DW_AT_lower_bound, cu); |
a02abb62 | 12821 | if (attr) |
4fae6e18 JK |
12822 | low = dwarf2_get_attr_constant_value (attr, low); |
12823 | else if (!low_default_is_valid) | |
12824 | complaint (&symfile_complaints, _("Missing DW_AT_lower_bound " | |
12825 | "- DIE at 0x%x [in module %s]"), | |
12826 | die->offset.sect_off, cu->objfile->name); | |
a02abb62 | 12827 | |
e142c38c | 12828 | attr = dwarf2_attr (die, DW_AT_upper_bound, cu); |
a02abb62 | 12829 | if (attr) |
6e70227d | 12830 | { |
d48323d8 | 12831 | if (attr_form_is_block (attr) || is_ref_attr (attr)) |
a02abb62 JB |
12832 | { |
12833 | /* GCC encodes arrays with unspecified or dynamic length | |
e77813c8 | 12834 | with a DW_FORM_block1 attribute or a reference attribute. |
a02abb62 JB |
12835 | FIXME: GDB does not yet know how to handle dynamic |
12836 | arrays properly, treat them as arrays with unspecified | |
12837 | length for now. | |
12838 | ||
12839 | FIXME: jimb/2003-09-22: GDB does not really know | |
12840 | how to handle arrays of unspecified length | |
12841 | either; we just represent them as zero-length | |
12842 | arrays. Choose an appropriate upper bound given | |
12843 | the lower bound we've computed above. */ | |
12844 | high = low - 1; | |
12845 | } | |
12846 | else | |
12847 | high = dwarf2_get_attr_constant_value (attr, 1); | |
12848 | } | |
e77813c8 PM |
12849 | else |
12850 | { | |
12851 | attr = dwarf2_attr (die, DW_AT_count, cu); | |
12852 | if (attr) | |
12853 | { | |
12854 | int count = dwarf2_get_attr_constant_value (attr, 1); | |
12855 | high = low + count - 1; | |
12856 | } | |
c2ff108b JK |
12857 | else |
12858 | { | |
12859 | /* Unspecified array length. */ | |
12860 | high = low - 1; | |
12861 | } | |
e77813c8 PM |
12862 | } |
12863 | ||
12864 | /* Dwarf-2 specifications explicitly allows to create subrange types | |
12865 | without specifying a base type. | |
12866 | In that case, the base type must be set to the type of | |
12867 | the lower bound, upper bound or count, in that order, if any of these | |
12868 | three attributes references an object that has a type. | |
12869 | If no base type is found, the Dwarf-2 specifications say that | |
12870 | a signed integer type of size equal to the size of an address should | |
12871 | be used. | |
12872 | For the following C code: `extern char gdb_int [];' | |
12873 | GCC produces an empty range DIE. | |
12874 | FIXME: muller/2010-05-28: Possible references to object for low bound, | |
0963b4bd | 12875 | high bound or count are not yet handled by this code. */ |
e77813c8 PM |
12876 | if (TYPE_CODE (base_type) == TYPE_CODE_VOID) |
12877 | { | |
12878 | struct objfile *objfile = cu->objfile; | |
12879 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
12880 | int addr_size = gdbarch_addr_bit (gdbarch) /8; | |
12881 | struct type *int_type = objfile_type (objfile)->builtin_int; | |
12882 | ||
12883 | /* Test "int", "long int", and "long long int" objfile types, | |
12884 | and select the first one having a size above or equal to the | |
12885 | architecture address size. */ | |
12886 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
12887 | base_type = int_type; | |
12888 | else | |
12889 | { | |
12890 | int_type = objfile_type (objfile)->builtin_long; | |
12891 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
12892 | base_type = int_type; | |
12893 | else | |
12894 | { | |
12895 | int_type = objfile_type (objfile)->builtin_long_long; | |
12896 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
12897 | base_type = int_type; | |
12898 | } | |
12899 | } | |
12900 | } | |
a02abb62 | 12901 | |
6e70227d | 12902 | negative_mask = |
43bbcdc2 PH |
12903 | (LONGEST) -1 << (TYPE_LENGTH (base_type) * TARGET_CHAR_BIT - 1); |
12904 | if (!TYPE_UNSIGNED (base_type) && (low & negative_mask)) | |
12905 | low |= negative_mask; | |
12906 | if (!TYPE_UNSIGNED (base_type) && (high & negative_mask)) | |
12907 | high |= negative_mask; | |
12908 | ||
4c9ad8c2 | 12909 | range_type = create_range_type (NULL, orig_base_type, low, high); |
a02abb62 | 12910 | |
bbb0eef6 JK |
12911 | /* Mark arrays with dynamic length at least as an array of unspecified |
12912 | length. GDB could check the boundary but before it gets implemented at | |
12913 | least allow accessing the array elements. */ | |
d48323d8 | 12914 | if (attr && attr_form_is_block (attr)) |
bbb0eef6 JK |
12915 | TYPE_HIGH_BOUND_UNDEFINED (range_type) = 1; |
12916 | ||
c2ff108b JK |
12917 | /* Ada expects an empty array on no boundary attributes. */ |
12918 | if (attr == NULL && cu->language != language_ada) | |
12919 | TYPE_HIGH_BOUND_UNDEFINED (range_type) = 1; | |
12920 | ||
39cbfefa DJ |
12921 | name = dwarf2_name (die, cu); |
12922 | if (name) | |
12923 | TYPE_NAME (range_type) = name; | |
6e70227d | 12924 | |
e142c38c | 12925 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
a02abb62 JB |
12926 | if (attr) |
12927 | TYPE_LENGTH (range_type) = DW_UNSND (attr); | |
12928 | ||
7e314c57 JK |
12929 | set_die_type (die, range_type, cu); |
12930 | ||
12931 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
12932 | set_descriptive_type (range_type, die, cu); |
12933 | ||
7e314c57 | 12934 | return range_type; |
a02abb62 | 12935 | } |
6e70227d | 12936 | |
f792889a | 12937 | static struct type * |
81a17f79 JB |
12938 | read_unspecified_type (struct die_info *die, struct dwarf2_cu *cu) |
12939 | { | |
12940 | struct type *type; | |
81a17f79 | 12941 | |
81a17f79 JB |
12942 | /* For now, we only support the C meaning of an unspecified type: void. */ |
12943 | ||
0114d602 DJ |
12944 | type = init_type (TYPE_CODE_VOID, 0, 0, NULL, cu->objfile); |
12945 | TYPE_NAME (type) = dwarf2_name (die, cu); | |
81a17f79 | 12946 | |
f792889a | 12947 | return set_die_type (die, type, cu); |
81a17f79 | 12948 | } |
a02abb62 | 12949 | |
639d11d3 DC |
12950 | /* Read a single die and all its descendents. Set the die's sibling |
12951 | field to NULL; set other fields in the die correctly, and set all | |
12952 | of the descendents' fields correctly. Set *NEW_INFO_PTR to the | |
12953 | location of the info_ptr after reading all of those dies. PARENT | |
12954 | is the parent of the die in question. */ | |
12955 | ||
12956 | static struct die_info * | |
dee91e82 DE |
12957 | read_die_and_children (const struct die_reader_specs *reader, |
12958 | gdb_byte *info_ptr, | |
12959 | gdb_byte **new_info_ptr, | |
12960 | struct die_info *parent) | |
639d11d3 DC |
12961 | { |
12962 | struct die_info *die; | |
fe1b8b76 | 12963 | gdb_byte *cur_ptr; |
639d11d3 DC |
12964 | int has_children; |
12965 | ||
93311388 | 12966 | cur_ptr = read_full_die (reader, &die, info_ptr, &has_children); |
1d325ec1 DJ |
12967 | if (die == NULL) |
12968 | { | |
12969 | *new_info_ptr = cur_ptr; | |
12970 | return NULL; | |
12971 | } | |
93311388 | 12972 | store_in_ref_table (die, reader->cu); |
639d11d3 DC |
12973 | |
12974 | if (has_children) | |
348e048f | 12975 | die->child = read_die_and_siblings (reader, cur_ptr, new_info_ptr, die); |
639d11d3 DC |
12976 | else |
12977 | { | |
12978 | die->child = NULL; | |
12979 | *new_info_ptr = cur_ptr; | |
12980 | } | |
12981 | ||
12982 | die->sibling = NULL; | |
12983 | die->parent = parent; | |
12984 | return die; | |
12985 | } | |
12986 | ||
12987 | /* Read a die, all of its descendents, and all of its siblings; set | |
12988 | all of the fields of all of the dies correctly. Arguments are as | |
12989 | in read_die_and_children. */ | |
12990 | ||
12991 | static struct die_info * | |
93311388 DE |
12992 | read_die_and_siblings (const struct die_reader_specs *reader, |
12993 | gdb_byte *info_ptr, | |
fe1b8b76 | 12994 | gdb_byte **new_info_ptr, |
639d11d3 DC |
12995 | struct die_info *parent) |
12996 | { | |
12997 | struct die_info *first_die, *last_sibling; | |
fe1b8b76 | 12998 | gdb_byte *cur_ptr; |
639d11d3 | 12999 | |
c906108c | 13000 | cur_ptr = info_ptr; |
639d11d3 DC |
13001 | first_die = last_sibling = NULL; |
13002 | ||
13003 | while (1) | |
c906108c | 13004 | { |
639d11d3 | 13005 | struct die_info *die |
dee91e82 | 13006 | = read_die_and_children (reader, cur_ptr, &cur_ptr, parent); |
639d11d3 | 13007 | |
1d325ec1 | 13008 | if (die == NULL) |
c906108c | 13009 | { |
639d11d3 DC |
13010 | *new_info_ptr = cur_ptr; |
13011 | return first_die; | |
c906108c | 13012 | } |
1d325ec1 DJ |
13013 | |
13014 | if (!first_die) | |
13015 | first_die = die; | |
c906108c | 13016 | else |
1d325ec1 DJ |
13017 | last_sibling->sibling = die; |
13018 | ||
13019 | last_sibling = die; | |
c906108c | 13020 | } |
c906108c SS |
13021 | } |
13022 | ||
3019eac3 DE |
13023 | /* Read a die and all its attributes, leave space for NUM_EXTRA_ATTRS |
13024 | attributes. | |
13025 | The caller is responsible for filling in the extra attributes | |
13026 | and updating (*DIEP)->num_attrs. | |
13027 | Set DIEP to point to a newly allocated die with its information, | |
13028 | except for its child, sibling, and parent fields. | |
13029 | Set HAS_CHILDREN to tell whether the die has children or not. */ | |
93311388 DE |
13030 | |
13031 | static gdb_byte * | |
3019eac3 DE |
13032 | read_full_die_1 (const struct die_reader_specs *reader, |
13033 | struct die_info **diep, gdb_byte *info_ptr, | |
13034 | int *has_children, int num_extra_attrs) | |
93311388 | 13035 | { |
b64f50a1 JK |
13036 | unsigned int abbrev_number, bytes_read, i; |
13037 | sect_offset offset; | |
93311388 DE |
13038 | struct abbrev_info *abbrev; |
13039 | struct die_info *die; | |
13040 | struct dwarf2_cu *cu = reader->cu; | |
13041 | bfd *abfd = reader->abfd; | |
13042 | ||
b64f50a1 | 13043 | offset.sect_off = info_ptr - reader->buffer; |
93311388 DE |
13044 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
13045 | info_ptr += bytes_read; | |
13046 | if (!abbrev_number) | |
13047 | { | |
13048 | *diep = NULL; | |
13049 | *has_children = 0; | |
13050 | return info_ptr; | |
13051 | } | |
13052 | ||
433df2d4 | 13053 | abbrev = abbrev_table_lookup_abbrev (cu->abbrev_table, abbrev_number); |
93311388 | 13054 | if (!abbrev) |
348e048f DE |
13055 | error (_("Dwarf Error: could not find abbrev number %d [in module %s]"), |
13056 | abbrev_number, | |
13057 | bfd_get_filename (abfd)); | |
13058 | ||
3019eac3 | 13059 | die = dwarf_alloc_die (cu, abbrev->num_attrs + num_extra_attrs); |
93311388 DE |
13060 | die->offset = offset; |
13061 | die->tag = abbrev->tag; | |
13062 | die->abbrev = abbrev_number; | |
13063 | ||
3019eac3 DE |
13064 | /* Make the result usable. |
13065 | The caller needs to update num_attrs after adding the extra | |
13066 | attributes. */ | |
93311388 DE |
13067 | die->num_attrs = abbrev->num_attrs; |
13068 | ||
13069 | for (i = 0; i < abbrev->num_attrs; ++i) | |
dee91e82 DE |
13070 | info_ptr = read_attribute (reader, &die->attrs[i], &abbrev->attrs[i], |
13071 | info_ptr); | |
93311388 DE |
13072 | |
13073 | *diep = die; | |
13074 | *has_children = abbrev->has_children; | |
13075 | return info_ptr; | |
13076 | } | |
13077 | ||
3019eac3 DE |
13078 | /* Read a die and all its attributes. |
13079 | Set DIEP to point to a newly allocated die with its information, | |
13080 | except for its child, sibling, and parent fields. | |
13081 | Set HAS_CHILDREN to tell whether the die has children or not. */ | |
13082 | ||
13083 | static gdb_byte * | |
13084 | read_full_die (const struct die_reader_specs *reader, | |
13085 | struct die_info **diep, gdb_byte *info_ptr, | |
13086 | int *has_children) | |
13087 | { | |
13088 | return read_full_die_1 (reader, diep, info_ptr, has_children, 0); | |
13089 | } | |
433df2d4 DE |
13090 | \f |
13091 | /* Abbreviation tables. | |
3019eac3 | 13092 | |
433df2d4 | 13093 | In DWARF version 2, the description of the debugging information is |
c906108c SS |
13094 | stored in a separate .debug_abbrev section. Before we read any |
13095 | dies from a section we read in all abbreviations and install them | |
433df2d4 DE |
13096 | in a hash table. */ |
13097 | ||
13098 | /* Allocate space for a struct abbrev_info object in ABBREV_TABLE. */ | |
13099 | ||
13100 | static struct abbrev_info * | |
13101 | abbrev_table_alloc_abbrev (struct abbrev_table *abbrev_table) | |
13102 | { | |
13103 | struct abbrev_info *abbrev; | |
13104 | ||
13105 | abbrev = (struct abbrev_info *) | |
13106 | obstack_alloc (&abbrev_table->abbrev_obstack, sizeof (struct abbrev_info)); | |
13107 | memset (abbrev, 0, sizeof (struct abbrev_info)); | |
13108 | return abbrev; | |
13109 | } | |
13110 | ||
13111 | /* Add an abbreviation to the table. */ | |
c906108c SS |
13112 | |
13113 | static void | |
433df2d4 DE |
13114 | abbrev_table_add_abbrev (struct abbrev_table *abbrev_table, |
13115 | unsigned int abbrev_number, | |
13116 | struct abbrev_info *abbrev) | |
13117 | { | |
13118 | unsigned int hash_number; | |
13119 | ||
13120 | hash_number = abbrev_number % ABBREV_HASH_SIZE; | |
13121 | abbrev->next = abbrev_table->abbrevs[hash_number]; | |
13122 | abbrev_table->abbrevs[hash_number] = abbrev; | |
13123 | } | |
dee91e82 | 13124 | |
433df2d4 DE |
13125 | /* Look up an abbrev in the table. |
13126 | Returns NULL if the abbrev is not found. */ | |
13127 | ||
13128 | static struct abbrev_info * | |
13129 | abbrev_table_lookup_abbrev (const struct abbrev_table *abbrev_table, | |
13130 | unsigned int abbrev_number) | |
c906108c | 13131 | { |
433df2d4 DE |
13132 | unsigned int hash_number; |
13133 | struct abbrev_info *abbrev; | |
13134 | ||
13135 | hash_number = abbrev_number % ABBREV_HASH_SIZE; | |
13136 | abbrev = abbrev_table->abbrevs[hash_number]; | |
13137 | ||
13138 | while (abbrev) | |
13139 | { | |
13140 | if (abbrev->number == abbrev_number) | |
13141 | return abbrev; | |
13142 | abbrev = abbrev->next; | |
13143 | } | |
13144 | return NULL; | |
13145 | } | |
13146 | ||
13147 | /* Read in an abbrev table. */ | |
13148 | ||
13149 | static struct abbrev_table * | |
13150 | abbrev_table_read_table (struct dwarf2_section_info *section, | |
13151 | sect_offset offset) | |
13152 | { | |
13153 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
13154 | bfd *abfd = section->asection->owner; | |
13155 | struct abbrev_table *abbrev_table; | |
fe1b8b76 | 13156 | gdb_byte *abbrev_ptr; |
c906108c SS |
13157 | struct abbrev_info *cur_abbrev; |
13158 | unsigned int abbrev_number, bytes_read, abbrev_name; | |
433df2d4 | 13159 | unsigned int abbrev_form; |
f3dd6933 DJ |
13160 | struct attr_abbrev *cur_attrs; |
13161 | unsigned int allocated_attrs; | |
c906108c | 13162 | |
433df2d4 | 13163 | abbrev_table = XMALLOC (struct abbrev_table); |
f4dc4d17 | 13164 | abbrev_table->offset = offset; |
433df2d4 DE |
13165 | obstack_init (&abbrev_table->abbrev_obstack); |
13166 | abbrev_table->abbrevs = obstack_alloc (&abbrev_table->abbrev_obstack, | |
13167 | (ABBREV_HASH_SIZE | |
13168 | * sizeof (struct abbrev_info *))); | |
13169 | memset (abbrev_table->abbrevs, 0, | |
13170 | ABBREV_HASH_SIZE * sizeof (struct abbrev_info *)); | |
c906108c | 13171 | |
433df2d4 DE |
13172 | dwarf2_read_section (objfile, section); |
13173 | abbrev_ptr = section->buffer + offset.sect_off; | |
c906108c SS |
13174 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
13175 | abbrev_ptr += bytes_read; | |
13176 | ||
f3dd6933 DJ |
13177 | allocated_attrs = ATTR_ALLOC_CHUNK; |
13178 | cur_attrs = xmalloc (allocated_attrs * sizeof (struct attr_abbrev)); | |
6e70227d | 13179 | |
0963b4bd | 13180 | /* Loop until we reach an abbrev number of 0. */ |
c906108c SS |
13181 | while (abbrev_number) |
13182 | { | |
433df2d4 | 13183 | cur_abbrev = abbrev_table_alloc_abbrev (abbrev_table); |
c906108c SS |
13184 | |
13185 | /* read in abbrev header */ | |
13186 | cur_abbrev->number = abbrev_number; | |
13187 | cur_abbrev->tag = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
13188 | abbrev_ptr += bytes_read; | |
13189 | cur_abbrev->has_children = read_1_byte (abfd, abbrev_ptr); | |
13190 | abbrev_ptr += 1; | |
13191 | ||
13192 | /* now read in declarations */ | |
13193 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
13194 | abbrev_ptr += bytes_read; | |
13195 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
13196 | abbrev_ptr += bytes_read; | |
13197 | while (abbrev_name) | |
13198 | { | |
f3dd6933 | 13199 | if (cur_abbrev->num_attrs == allocated_attrs) |
c906108c | 13200 | { |
f3dd6933 DJ |
13201 | allocated_attrs += ATTR_ALLOC_CHUNK; |
13202 | cur_attrs | |
13203 | = xrealloc (cur_attrs, (allocated_attrs | |
13204 | * sizeof (struct attr_abbrev))); | |
c906108c | 13205 | } |
ae038cb0 | 13206 | |
f3dd6933 DJ |
13207 | cur_attrs[cur_abbrev->num_attrs].name = abbrev_name; |
13208 | cur_attrs[cur_abbrev->num_attrs++].form = abbrev_form; | |
c906108c SS |
13209 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
13210 | abbrev_ptr += bytes_read; | |
13211 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
13212 | abbrev_ptr += bytes_read; | |
13213 | } | |
13214 | ||
433df2d4 | 13215 | cur_abbrev->attrs = obstack_alloc (&abbrev_table->abbrev_obstack, |
f3dd6933 DJ |
13216 | (cur_abbrev->num_attrs |
13217 | * sizeof (struct attr_abbrev))); | |
13218 | memcpy (cur_abbrev->attrs, cur_attrs, | |
13219 | cur_abbrev->num_attrs * sizeof (struct attr_abbrev)); | |
13220 | ||
433df2d4 | 13221 | abbrev_table_add_abbrev (abbrev_table, abbrev_number, cur_abbrev); |
c906108c SS |
13222 | |
13223 | /* Get next abbreviation. | |
13224 | Under Irix6 the abbreviations for a compilation unit are not | |
c5aa993b JM |
13225 | always properly terminated with an abbrev number of 0. |
13226 | Exit loop if we encounter an abbreviation which we have | |
13227 | already read (which means we are about to read the abbreviations | |
13228 | for the next compile unit) or if the end of the abbreviation | |
13229 | table is reached. */ | |
433df2d4 | 13230 | if ((unsigned int) (abbrev_ptr - section->buffer) >= section->size) |
c906108c SS |
13231 | break; |
13232 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
13233 | abbrev_ptr += bytes_read; | |
433df2d4 | 13234 | if (abbrev_table_lookup_abbrev (abbrev_table, abbrev_number) != NULL) |
c906108c SS |
13235 | break; |
13236 | } | |
f3dd6933 DJ |
13237 | |
13238 | xfree (cur_attrs); | |
433df2d4 | 13239 | return abbrev_table; |
c906108c SS |
13240 | } |
13241 | ||
433df2d4 | 13242 | /* Free the resources held by ABBREV_TABLE. */ |
c906108c | 13243 | |
c906108c | 13244 | static void |
433df2d4 | 13245 | abbrev_table_free (struct abbrev_table *abbrev_table) |
c906108c | 13246 | { |
433df2d4 DE |
13247 | obstack_free (&abbrev_table->abbrev_obstack, NULL); |
13248 | xfree (abbrev_table); | |
c906108c SS |
13249 | } |
13250 | ||
f4dc4d17 DE |
13251 | /* Same as abbrev_table_free but as a cleanup. |
13252 | We pass in a pointer to the pointer to the table so that we can | |
13253 | set the pointer to NULL when we're done. It also simplifies | |
13254 | build_type_unit_groups. */ | |
13255 | ||
13256 | static void | |
13257 | abbrev_table_free_cleanup (void *table_ptr) | |
13258 | { | |
13259 | struct abbrev_table **abbrev_table_ptr = table_ptr; | |
13260 | ||
13261 | if (*abbrev_table_ptr != NULL) | |
13262 | abbrev_table_free (*abbrev_table_ptr); | |
13263 | *abbrev_table_ptr = NULL; | |
13264 | } | |
13265 | ||
433df2d4 DE |
13266 | /* Read the abbrev table for CU from ABBREV_SECTION. */ |
13267 | ||
13268 | static void | |
13269 | dwarf2_read_abbrevs (struct dwarf2_cu *cu, | |
13270 | struct dwarf2_section_info *abbrev_section) | |
c906108c | 13271 | { |
433df2d4 DE |
13272 | cu->abbrev_table = |
13273 | abbrev_table_read_table (abbrev_section, cu->header.abbrev_offset); | |
13274 | } | |
c906108c | 13275 | |
433df2d4 | 13276 | /* Release the memory used by the abbrev table for a compilation unit. */ |
c906108c | 13277 | |
433df2d4 DE |
13278 | static void |
13279 | dwarf2_free_abbrev_table (void *ptr_to_cu) | |
13280 | { | |
13281 | struct dwarf2_cu *cu = ptr_to_cu; | |
c906108c | 13282 | |
433df2d4 DE |
13283 | abbrev_table_free (cu->abbrev_table); |
13284 | /* Set this to NULL so that we SEGV if we try to read it later, | |
13285 | and also because free_comp_unit verifies this is NULL. */ | |
13286 | cu->abbrev_table = NULL; | |
13287 | } | |
13288 | \f | |
72bf9492 DJ |
13289 | /* Returns nonzero if TAG represents a type that we might generate a partial |
13290 | symbol for. */ | |
13291 | ||
13292 | static int | |
13293 | is_type_tag_for_partial (int tag) | |
13294 | { | |
13295 | switch (tag) | |
13296 | { | |
13297 | #if 0 | |
13298 | /* Some types that would be reasonable to generate partial symbols for, | |
13299 | that we don't at present. */ | |
13300 | case DW_TAG_array_type: | |
13301 | case DW_TAG_file_type: | |
13302 | case DW_TAG_ptr_to_member_type: | |
13303 | case DW_TAG_set_type: | |
13304 | case DW_TAG_string_type: | |
13305 | case DW_TAG_subroutine_type: | |
13306 | #endif | |
13307 | case DW_TAG_base_type: | |
13308 | case DW_TAG_class_type: | |
680b30c7 | 13309 | case DW_TAG_interface_type: |
72bf9492 DJ |
13310 | case DW_TAG_enumeration_type: |
13311 | case DW_TAG_structure_type: | |
13312 | case DW_TAG_subrange_type: | |
13313 | case DW_TAG_typedef: | |
13314 | case DW_TAG_union_type: | |
13315 | return 1; | |
13316 | default: | |
13317 | return 0; | |
13318 | } | |
13319 | } | |
13320 | ||
13321 | /* Load all DIEs that are interesting for partial symbols into memory. */ | |
13322 | ||
13323 | static struct partial_die_info * | |
dee91e82 DE |
13324 | load_partial_dies (const struct die_reader_specs *reader, |
13325 | gdb_byte *info_ptr, int building_psymtab) | |
72bf9492 | 13326 | { |
dee91e82 | 13327 | struct dwarf2_cu *cu = reader->cu; |
bb5ed363 | 13328 | struct objfile *objfile = cu->objfile; |
72bf9492 DJ |
13329 | struct partial_die_info *part_die; |
13330 | struct partial_die_info *parent_die, *last_die, *first_die = NULL; | |
13331 | struct abbrev_info *abbrev; | |
13332 | unsigned int bytes_read; | |
5afb4e99 | 13333 | unsigned int load_all = 0; |
72bf9492 DJ |
13334 | int nesting_level = 1; |
13335 | ||
13336 | parent_die = NULL; | |
13337 | last_die = NULL; | |
13338 | ||
7adf1e79 DE |
13339 | gdb_assert (cu->per_cu != NULL); |
13340 | if (cu->per_cu->load_all_dies) | |
5afb4e99 DJ |
13341 | load_all = 1; |
13342 | ||
72bf9492 DJ |
13343 | cu->partial_dies |
13344 | = htab_create_alloc_ex (cu->header.length / 12, | |
13345 | partial_die_hash, | |
13346 | partial_die_eq, | |
13347 | NULL, | |
13348 | &cu->comp_unit_obstack, | |
13349 | hashtab_obstack_allocate, | |
13350 | dummy_obstack_deallocate); | |
13351 | ||
13352 | part_die = obstack_alloc (&cu->comp_unit_obstack, | |
13353 | sizeof (struct partial_die_info)); | |
13354 | ||
13355 | while (1) | |
13356 | { | |
13357 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, cu); | |
13358 | ||
13359 | /* A NULL abbrev means the end of a series of children. */ | |
13360 | if (abbrev == NULL) | |
13361 | { | |
13362 | if (--nesting_level == 0) | |
13363 | { | |
13364 | /* PART_DIE was probably the last thing allocated on the | |
13365 | comp_unit_obstack, so we could call obstack_free | |
13366 | here. We don't do that because the waste is small, | |
13367 | and will be cleaned up when we're done with this | |
13368 | compilation unit. This way, we're also more robust | |
13369 | against other users of the comp_unit_obstack. */ | |
13370 | return first_die; | |
13371 | } | |
13372 | info_ptr += bytes_read; | |
13373 | last_die = parent_die; | |
13374 | parent_die = parent_die->die_parent; | |
13375 | continue; | |
13376 | } | |
13377 | ||
98bfdba5 PA |
13378 | /* Check for template arguments. We never save these; if |
13379 | they're seen, we just mark the parent, and go on our way. */ | |
13380 | if (parent_die != NULL | |
13381 | && cu->language == language_cplus | |
13382 | && (abbrev->tag == DW_TAG_template_type_param | |
13383 | || abbrev->tag == DW_TAG_template_value_param)) | |
13384 | { | |
13385 | parent_die->has_template_arguments = 1; | |
13386 | ||
13387 | if (!load_all) | |
13388 | { | |
13389 | /* We don't need a partial DIE for the template argument. */ | |
dee91e82 | 13390 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
13391 | continue; |
13392 | } | |
13393 | } | |
13394 | ||
0d99eb77 | 13395 | /* We only recurse into c++ subprograms looking for template arguments. |
98bfdba5 PA |
13396 | Skip their other children. */ |
13397 | if (!load_all | |
13398 | && cu->language == language_cplus | |
13399 | && parent_die != NULL | |
13400 | && parent_die->tag == DW_TAG_subprogram) | |
13401 | { | |
dee91e82 | 13402 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
13403 | continue; |
13404 | } | |
13405 | ||
5afb4e99 DJ |
13406 | /* Check whether this DIE is interesting enough to save. Normally |
13407 | we would not be interested in members here, but there may be | |
13408 | later variables referencing them via DW_AT_specification (for | |
13409 | static members). */ | |
13410 | if (!load_all | |
13411 | && !is_type_tag_for_partial (abbrev->tag) | |
72929c62 | 13412 | && abbrev->tag != DW_TAG_constant |
72bf9492 DJ |
13413 | && abbrev->tag != DW_TAG_enumerator |
13414 | && abbrev->tag != DW_TAG_subprogram | |
bc30ff58 | 13415 | && abbrev->tag != DW_TAG_lexical_block |
72bf9492 | 13416 | && abbrev->tag != DW_TAG_variable |
5afb4e99 | 13417 | && abbrev->tag != DW_TAG_namespace |
f55ee35c | 13418 | && abbrev->tag != DW_TAG_module |
95554aad TT |
13419 | && abbrev->tag != DW_TAG_member |
13420 | && abbrev->tag != DW_TAG_imported_unit) | |
72bf9492 DJ |
13421 | { |
13422 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 13423 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
72bf9492 DJ |
13424 | continue; |
13425 | } | |
13426 | ||
dee91e82 DE |
13427 | info_ptr = read_partial_die (reader, part_die, abbrev, bytes_read, |
13428 | info_ptr); | |
72bf9492 DJ |
13429 | |
13430 | /* This two-pass algorithm for processing partial symbols has a | |
13431 | high cost in cache pressure. Thus, handle some simple cases | |
13432 | here which cover the majority of C partial symbols. DIEs | |
13433 | which neither have specification tags in them, nor could have | |
13434 | specification tags elsewhere pointing at them, can simply be | |
13435 | processed and discarded. | |
13436 | ||
13437 | This segment is also optional; scan_partial_symbols and | |
13438 | add_partial_symbol will handle these DIEs if we chain | |
13439 | them in normally. When compilers which do not emit large | |
13440 | quantities of duplicate debug information are more common, | |
13441 | this code can probably be removed. */ | |
13442 | ||
13443 | /* Any complete simple types at the top level (pretty much all | |
13444 | of them, for a language without namespaces), can be processed | |
13445 | directly. */ | |
13446 | if (parent_die == NULL | |
13447 | && part_die->has_specification == 0 | |
13448 | && part_die->is_declaration == 0 | |
d8228535 | 13449 | && ((part_die->tag == DW_TAG_typedef && !part_die->has_children) |
72bf9492 DJ |
13450 | || part_die->tag == DW_TAG_base_type |
13451 | || part_die->tag == DW_TAG_subrange_type)) | |
13452 | { | |
13453 | if (building_psymtab && part_die->name != NULL) | |
04a679b8 | 13454 | add_psymbol_to_list (part_die->name, strlen (part_die->name), 0, |
72bf9492 | 13455 | VAR_DOMAIN, LOC_TYPEDEF, |
bb5ed363 DE |
13456 | &objfile->static_psymbols, |
13457 | 0, (CORE_ADDR) 0, cu->language, objfile); | |
dee91e82 | 13458 | info_ptr = locate_pdi_sibling (reader, part_die, info_ptr); |
72bf9492 DJ |
13459 | continue; |
13460 | } | |
13461 | ||
d8228535 JK |
13462 | /* The exception for DW_TAG_typedef with has_children above is |
13463 | a workaround of GCC PR debug/47510. In the case of this complaint | |
13464 | type_name_no_tag_or_error will error on such types later. | |
13465 | ||
13466 | GDB skipped children of DW_TAG_typedef by the shortcut above and then | |
13467 | it could not find the child DIEs referenced later, this is checked | |
13468 | above. In correct DWARF DW_TAG_typedef should have no children. */ | |
13469 | ||
13470 | if (part_die->tag == DW_TAG_typedef && part_die->has_children) | |
13471 | complaint (&symfile_complaints, | |
13472 | _("DW_TAG_typedef has childen - GCC PR debug/47510 bug " | |
13473 | "- DIE at 0x%x [in module %s]"), | |
b64f50a1 | 13474 | part_die->offset.sect_off, objfile->name); |
d8228535 | 13475 | |
72bf9492 DJ |
13476 | /* If we're at the second level, and we're an enumerator, and |
13477 | our parent has no specification (meaning possibly lives in a | |
13478 | namespace elsewhere), then we can add the partial symbol now | |
13479 | instead of queueing it. */ | |
13480 | if (part_die->tag == DW_TAG_enumerator | |
13481 | && parent_die != NULL | |
13482 | && parent_die->die_parent == NULL | |
13483 | && parent_die->tag == DW_TAG_enumeration_type | |
13484 | && parent_die->has_specification == 0) | |
13485 | { | |
13486 | if (part_die->name == NULL) | |
3e43a32a MS |
13487 | complaint (&symfile_complaints, |
13488 | _("malformed enumerator DIE ignored")); | |
72bf9492 | 13489 | else if (building_psymtab) |
04a679b8 | 13490 | add_psymbol_to_list (part_die->name, strlen (part_die->name), 0, |
72bf9492 | 13491 | VAR_DOMAIN, LOC_CONST, |
987504bb JJ |
13492 | (cu->language == language_cplus |
13493 | || cu->language == language_java) | |
bb5ed363 DE |
13494 | ? &objfile->global_psymbols |
13495 | : &objfile->static_psymbols, | |
13496 | 0, (CORE_ADDR) 0, cu->language, objfile); | |
72bf9492 | 13497 | |
dee91e82 | 13498 | info_ptr = locate_pdi_sibling (reader, part_die, info_ptr); |
72bf9492 DJ |
13499 | continue; |
13500 | } | |
13501 | ||
13502 | /* We'll save this DIE so link it in. */ | |
13503 | part_die->die_parent = parent_die; | |
13504 | part_die->die_sibling = NULL; | |
13505 | part_die->die_child = NULL; | |
13506 | ||
13507 | if (last_die && last_die == parent_die) | |
13508 | last_die->die_child = part_die; | |
13509 | else if (last_die) | |
13510 | last_die->die_sibling = part_die; | |
13511 | ||
13512 | last_die = part_die; | |
13513 | ||
13514 | if (first_die == NULL) | |
13515 | first_die = part_die; | |
13516 | ||
13517 | /* Maybe add the DIE to the hash table. Not all DIEs that we | |
13518 | find interesting need to be in the hash table, because we | |
13519 | also have the parent/sibling/child chains; only those that we | |
13520 | might refer to by offset later during partial symbol reading. | |
13521 | ||
13522 | For now this means things that might have be the target of a | |
13523 | DW_AT_specification, DW_AT_abstract_origin, or | |
13524 | DW_AT_extension. DW_AT_extension will refer only to | |
13525 | namespaces; DW_AT_abstract_origin refers to functions (and | |
13526 | many things under the function DIE, but we do not recurse | |
13527 | into function DIEs during partial symbol reading) and | |
13528 | possibly variables as well; DW_AT_specification refers to | |
13529 | declarations. Declarations ought to have the DW_AT_declaration | |
13530 | flag. It happens that GCC forgets to put it in sometimes, but | |
13531 | only for functions, not for types. | |
13532 | ||
13533 | Adding more things than necessary to the hash table is harmless | |
13534 | except for the performance cost. Adding too few will result in | |
5afb4e99 DJ |
13535 | wasted time in find_partial_die, when we reread the compilation |
13536 | unit with load_all_dies set. */ | |
72bf9492 | 13537 | |
5afb4e99 | 13538 | if (load_all |
72929c62 | 13539 | || abbrev->tag == DW_TAG_constant |
5afb4e99 | 13540 | || abbrev->tag == DW_TAG_subprogram |
72bf9492 DJ |
13541 | || abbrev->tag == DW_TAG_variable |
13542 | || abbrev->tag == DW_TAG_namespace | |
13543 | || part_die->is_declaration) | |
13544 | { | |
13545 | void **slot; | |
13546 | ||
13547 | slot = htab_find_slot_with_hash (cu->partial_dies, part_die, | |
b64f50a1 | 13548 | part_die->offset.sect_off, INSERT); |
72bf9492 DJ |
13549 | *slot = part_die; |
13550 | } | |
13551 | ||
13552 | part_die = obstack_alloc (&cu->comp_unit_obstack, | |
13553 | sizeof (struct partial_die_info)); | |
13554 | ||
13555 | /* For some DIEs we want to follow their children (if any). For C | |
bc30ff58 | 13556 | we have no reason to follow the children of structures; for other |
98bfdba5 PA |
13557 | languages we have to, so that we can get at method physnames |
13558 | to infer fully qualified class names, for DW_AT_specification, | |
13559 | and for C++ template arguments. For C++, we also look one level | |
13560 | inside functions to find template arguments (if the name of the | |
13561 | function does not already contain the template arguments). | |
bc30ff58 JB |
13562 | |
13563 | For Ada, we need to scan the children of subprograms and lexical | |
13564 | blocks as well because Ada allows the definition of nested | |
13565 | entities that could be interesting for the debugger, such as | |
13566 | nested subprograms for instance. */ | |
72bf9492 | 13567 | if (last_die->has_children |
5afb4e99 DJ |
13568 | && (load_all |
13569 | || last_die->tag == DW_TAG_namespace | |
f55ee35c | 13570 | || last_die->tag == DW_TAG_module |
72bf9492 | 13571 | || last_die->tag == DW_TAG_enumeration_type |
98bfdba5 PA |
13572 | || (cu->language == language_cplus |
13573 | && last_die->tag == DW_TAG_subprogram | |
13574 | && (last_die->name == NULL | |
13575 | || strchr (last_die->name, '<') == NULL)) | |
72bf9492 DJ |
13576 | || (cu->language != language_c |
13577 | && (last_die->tag == DW_TAG_class_type | |
680b30c7 | 13578 | || last_die->tag == DW_TAG_interface_type |
72bf9492 | 13579 | || last_die->tag == DW_TAG_structure_type |
bc30ff58 JB |
13580 | || last_die->tag == DW_TAG_union_type)) |
13581 | || (cu->language == language_ada | |
13582 | && (last_die->tag == DW_TAG_subprogram | |
13583 | || last_die->tag == DW_TAG_lexical_block)))) | |
72bf9492 DJ |
13584 | { |
13585 | nesting_level++; | |
13586 | parent_die = last_die; | |
13587 | continue; | |
13588 | } | |
13589 | ||
13590 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 13591 | info_ptr = locate_pdi_sibling (reader, last_die, info_ptr); |
72bf9492 DJ |
13592 | |
13593 | /* Back to the top, do it again. */ | |
13594 | } | |
13595 | } | |
13596 | ||
c906108c SS |
13597 | /* Read a minimal amount of information into the minimal die structure. */ |
13598 | ||
fe1b8b76 | 13599 | static gdb_byte * |
dee91e82 DE |
13600 | read_partial_die (const struct die_reader_specs *reader, |
13601 | struct partial_die_info *part_die, | |
13602 | struct abbrev_info *abbrev, unsigned int abbrev_len, | |
13603 | gdb_byte *info_ptr) | |
c906108c | 13604 | { |
dee91e82 | 13605 | struct dwarf2_cu *cu = reader->cu; |
bb5ed363 | 13606 | struct objfile *objfile = cu->objfile; |
dee91e82 | 13607 | gdb_byte *buffer = reader->buffer; |
fa238c03 | 13608 | unsigned int i; |
c906108c | 13609 | struct attribute attr; |
c5aa993b | 13610 | int has_low_pc_attr = 0; |
c906108c | 13611 | int has_high_pc_attr = 0; |
91da1414 | 13612 | int high_pc_relative = 0; |
c906108c | 13613 | |
72bf9492 | 13614 | memset (part_die, 0, sizeof (struct partial_die_info)); |
c906108c | 13615 | |
b64f50a1 | 13616 | part_die->offset.sect_off = info_ptr - buffer; |
72bf9492 DJ |
13617 | |
13618 | info_ptr += abbrev_len; | |
13619 | ||
13620 | if (abbrev == NULL) | |
13621 | return info_ptr; | |
13622 | ||
c906108c SS |
13623 | part_die->tag = abbrev->tag; |
13624 | part_die->has_children = abbrev->has_children; | |
c906108c SS |
13625 | |
13626 | for (i = 0; i < abbrev->num_attrs; ++i) | |
13627 | { | |
dee91e82 | 13628 | info_ptr = read_attribute (reader, &attr, &abbrev->attrs[i], info_ptr); |
c906108c SS |
13629 | |
13630 | /* Store the data if it is of an attribute we want to keep in a | |
c5aa993b | 13631 | partial symbol table. */ |
c906108c SS |
13632 | switch (attr.name) |
13633 | { | |
13634 | case DW_AT_name: | |
71c25dea TT |
13635 | switch (part_die->tag) |
13636 | { | |
13637 | case DW_TAG_compile_unit: | |
95554aad | 13638 | case DW_TAG_partial_unit: |
348e048f | 13639 | case DW_TAG_type_unit: |
71c25dea TT |
13640 | /* Compilation units have a DW_AT_name that is a filename, not |
13641 | a source language identifier. */ | |
13642 | case DW_TAG_enumeration_type: | |
13643 | case DW_TAG_enumerator: | |
13644 | /* These tags always have simple identifiers already; no need | |
13645 | to canonicalize them. */ | |
13646 | part_die->name = DW_STRING (&attr); | |
13647 | break; | |
13648 | default: | |
13649 | part_die->name | |
13650 | = dwarf2_canonicalize_name (DW_STRING (&attr), cu, | |
bb5ed363 | 13651 | &objfile->objfile_obstack); |
71c25dea TT |
13652 | break; |
13653 | } | |
c906108c | 13654 | break; |
31ef98ae | 13655 | case DW_AT_linkage_name: |
c906108c | 13656 | case DW_AT_MIPS_linkage_name: |
31ef98ae TT |
13657 | /* Note that both forms of linkage name might appear. We |
13658 | assume they will be the same, and we only store the last | |
13659 | one we see. */ | |
94af9270 KS |
13660 | if (cu->language == language_ada) |
13661 | part_die->name = DW_STRING (&attr); | |
abc72ce4 | 13662 | part_die->linkage_name = DW_STRING (&attr); |
c906108c SS |
13663 | break; |
13664 | case DW_AT_low_pc: | |
13665 | has_low_pc_attr = 1; | |
13666 | part_die->lowpc = DW_ADDR (&attr); | |
13667 | break; | |
13668 | case DW_AT_high_pc: | |
13669 | has_high_pc_attr = 1; | |
3019eac3 DE |
13670 | if (attr.form == DW_FORM_addr |
13671 | || attr.form == DW_FORM_GNU_addr_index) | |
91da1414 MW |
13672 | part_die->highpc = DW_ADDR (&attr); |
13673 | else | |
13674 | { | |
13675 | high_pc_relative = 1; | |
13676 | part_die->highpc = DW_UNSND (&attr); | |
13677 | } | |
c906108c SS |
13678 | break; |
13679 | case DW_AT_location: | |
0963b4bd | 13680 | /* Support the .debug_loc offsets. */ |
8e19ed76 PS |
13681 | if (attr_form_is_block (&attr)) |
13682 | { | |
95554aad | 13683 | part_die->d.locdesc = DW_BLOCK (&attr); |
8e19ed76 | 13684 | } |
3690dd37 | 13685 | else if (attr_form_is_section_offset (&attr)) |
8e19ed76 | 13686 | { |
4d3c2250 | 13687 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
13688 | } |
13689 | else | |
13690 | { | |
4d3c2250 KB |
13691 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
13692 | "partial symbol information"); | |
8e19ed76 | 13693 | } |
c906108c | 13694 | break; |
c906108c SS |
13695 | case DW_AT_external: |
13696 | part_die->is_external = DW_UNSND (&attr); | |
13697 | break; | |
13698 | case DW_AT_declaration: | |
13699 | part_die->is_declaration = DW_UNSND (&attr); | |
13700 | break; | |
13701 | case DW_AT_type: | |
13702 | part_die->has_type = 1; | |
13703 | break; | |
13704 | case DW_AT_abstract_origin: | |
13705 | case DW_AT_specification: | |
72bf9492 DJ |
13706 | case DW_AT_extension: |
13707 | part_die->has_specification = 1; | |
c764a876 | 13708 | part_die->spec_offset = dwarf2_get_ref_die_offset (&attr); |
36586728 TT |
13709 | part_die->spec_is_dwz = (attr.form == DW_FORM_GNU_ref_alt |
13710 | || cu->per_cu->is_dwz); | |
c906108c SS |
13711 | break; |
13712 | case DW_AT_sibling: | |
13713 | /* Ignore absolute siblings, they might point outside of | |
13714 | the current compile unit. */ | |
13715 | if (attr.form == DW_FORM_ref_addr) | |
3e43a32a MS |
13716 | complaint (&symfile_complaints, |
13717 | _("ignoring absolute DW_AT_sibling")); | |
c906108c | 13718 | else |
b64f50a1 | 13719 | part_die->sibling = buffer + dwarf2_get_ref_die_offset (&attr).sect_off; |
c906108c | 13720 | break; |
fa4028e9 JB |
13721 | case DW_AT_byte_size: |
13722 | part_die->has_byte_size = 1; | |
13723 | break; | |
68511cec CES |
13724 | case DW_AT_calling_convention: |
13725 | /* DWARF doesn't provide a way to identify a program's source-level | |
13726 | entry point. DW_AT_calling_convention attributes are only meant | |
13727 | to describe functions' calling conventions. | |
13728 | ||
13729 | However, because it's a necessary piece of information in | |
13730 | Fortran, and because DW_CC_program is the only piece of debugging | |
13731 | information whose definition refers to a 'main program' at all, | |
13732 | several compilers have begun marking Fortran main programs with | |
13733 | DW_CC_program --- even when those functions use the standard | |
13734 | calling conventions. | |
13735 | ||
13736 | So until DWARF specifies a way to provide this information and | |
13737 | compilers pick up the new representation, we'll support this | |
13738 | practice. */ | |
13739 | if (DW_UNSND (&attr) == DW_CC_program | |
13740 | && cu->language == language_fortran) | |
01f8c46d JK |
13741 | { |
13742 | set_main_name (part_die->name); | |
13743 | ||
13744 | /* As this DIE has a static linkage the name would be difficult | |
13745 | to look up later. */ | |
13746 | language_of_main = language_fortran; | |
13747 | } | |
68511cec | 13748 | break; |
481860b3 GB |
13749 | case DW_AT_inline: |
13750 | if (DW_UNSND (&attr) == DW_INL_inlined | |
13751 | || DW_UNSND (&attr) == DW_INL_declared_inlined) | |
13752 | part_die->may_be_inlined = 1; | |
13753 | break; | |
95554aad TT |
13754 | |
13755 | case DW_AT_import: | |
13756 | if (part_die->tag == DW_TAG_imported_unit) | |
36586728 TT |
13757 | { |
13758 | part_die->d.offset = dwarf2_get_ref_die_offset (&attr); | |
13759 | part_die->is_dwz = (attr.form == DW_FORM_GNU_ref_alt | |
13760 | || cu->per_cu->is_dwz); | |
13761 | } | |
95554aad TT |
13762 | break; |
13763 | ||
c906108c SS |
13764 | default: |
13765 | break; | |
13766 | } | |
13767 | } | |
13768 | ||
91da1414 MW |
13769 | if (high_pc_relative) |
13770 | part_die->highpc += part_die->lowpc; | |
13771 | ||
9373cf26 JK |
13772 | if (has_low_pc_attr && has_high_pc_attr) |
13773 | { | |
13774 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
13775 | eliminate duplicate copies of functions and vtables and such. | |
13776 | The linker will arbitrarily choose one and discard the others. | |
13777 | The AT_*_pc values for such functions refer to local labels in | |
13778 | these sections. If the section from that file was discarded, the | |
13779 | labels are not in the output, so the relocs get a value of 0. | |
13780 | If this is a discarded function, mark the pc bounds as invalid, | |
13781 | so that GDB will ignore it. */ | |
13782 | if (part_die->lowpc == 0 && !dwarf2_per_objfile->has_section_at_zero) | |
13783 | { | |
bb5ed363 | 13784 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9373cf26 JK |
13785 | |
13786 | complaint (&symfile_complaints, | |
13787 | _("DW_AT_low_pc %s is zero " | |
13788 | "for DIE at 0x%x [in module %s]"), | |
13789 | paddress (gdbarch, part_die->lowpc), | |
b64f50a1 | 13790 | part_die->offset.sect_off, objfile->name); |
9373cf26 JK |
13791 | } |
13792 | /* dwarf2_get_pc_bounds has also the strict low < high requirement. */ | |
13793 | else if (part_die->lowpc >= part_die->highpc) | |
13794 | { | |
bb5ed363 | 13795 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9373cf26 JK |
13796 | |
13797 | complaint (&symfile_complaints, | |
13798 | _("DW_AT_low_pc %s is not < DW_AT_high_pc %s " | |
13799 | "for DIE at 0x%x [in module %s]"), | |
13800 | paddress (gdbarch, part_die->lowpc), | |
13801 | paddress (gdbarch, part_die->highpc), | |
b64f50a1 | 13802 | part_die->offset.sect_off, objfile->name); |
9373cf26 JK |
13803 | } |
13804 | else | |
13805 | part_die->has_pc_info = 1; | |
13806 | } | |
85cbf3d3 | 13807 | |
c906108c SS |
13808 | return info_ptr; |
13809 | } | |
13810 | ||
72bf9492 DJ |
13811 | /* Find a cached partial DIE at OFFSET in CU. */ |
13812 | ||
13813 | static struct partial_die_info * | |
b64f50a1 | 13814 | find_partial_die_in_comp_unit (sect_offset offset, struct dwarf2_cu *cu) |
72bf9492 DJ |
13815 | { |
13816 | struct partial_die_info *lookup_die = NULL; | |
13817 | struct partial_die_info part_die; | |
13818 | ||
13819 | part_die.offset = offset; | |
b64f50a1 JK |
13820 | lookup_die = htab_find_with_hash (cu->partial_dies, &part_die, |
13821 | offset.sect_off); | |
72bf9492 | 13822 | |
72bf9492 DJ |
13823 | return lookup_die; |
13824 | } | |
13825 | ||
348e048f DE |
13826 | /* Find a partial DIE at OFFSET, which may or may not be in CU, |
13827 | except in the case of .debug_types DIEs which do not reference | |
13828 | outside their CU (they do however referencing other types via | |
55f1336d | 13829 | DW_FORM_ref_sig8). */ |
72bf9492 DJ |
13830 | |
13831 | static struct partial_die_info * | |
36586728 | 13832 | find_partial_die (sect_offset offset, int offset_in_dwz, struct dwarf2_cu *cu) |
72bf9492 | 13833 | { |
bb5ed363 | 13834 | struct objfile *objfile = cu->objfile; |
5afb4e99 DJ |
13835 | struct dwarf2_per_cu_data *per_cu = NULL; |
13836 | struct partial_die_info *pd = NULL; | |
72bf9492 | 13837 | |
36586728 TT |
13838 | if (offset_in_dwz == cu->per_cu->is_dwz |
13839 | && offset_in_cu_p (&cu->header, offset)) | |
5afb4e99 DJ |
13840 | { |
13841 | pd = find_partial_die_in_comp_unit (offset, cu); | |
13842 | if (pd != NULL) | |
13843 | return pd; | |
0d99eb77 DE |
13844 | /* We missed recording what we needed. |
13845 | Load all dies and try again. */ | |
13846 | per_cu = cu->per_cu; | |
5afb4e99 | 13847 | } |
0d99eb77 DE |
13848 | else |
13849 | { | |
13850 | /* TUs don't reference other CUs/TUs (except via type signatures). */ | |
3019eac3 | 13851 | if (cu->per_cu->is_debug_types) |
0d99eb77 DE |
13852 | { |
13853 | error (_("Dwarf Error: Type Unit at offset 0x%lx contains" | |
13854 | " external reference to offset 0x%lx [in module %s].\n"), | |
13855 | (long) cu->header.offset.sect_off, (long) offset.sect_off, | |
13856 | bfd_get_filename (objfile->obfd)); | |
13857 | } | |
36586728 TT |
13858 | per_cu = dwarf2_find_containing_comp_unit (offset, offset_in_dwz, |
13859 | objfile); | |
72bf9492 | 13860 | |
0d99eb77 DE |
13861 | if (per_cu->cu == NULL || per_cu->cu->partial_dies == NULL) |
13862 | load_partial_comp_unit (per_cu); | |
ae038cb0 | 13863 | |
0d99eb77 DE |
13864 | per_cu->cu->last_used = 0; |
13865 | pd = find_partial_die_in_comp_unit (offset, per_cu->cu); | |
13866 | } | |
5afb4e99 | 13867 | |
dee91e82 DE |
13868 | /* If we didn't find it, and not all dies have been loaded, |
13869 | load them all and try again. */ | |
13870 | ||
5afb4e99 DJ |
13871 | if (pd == NULL && per_cu->load_all_dies == 0) |
13872 | { | |
5afb4e99 | 13873 | per_cu->load_all_dies = 1; |
fd820528 DE |
13874 | |
13875 | /* This is nasty. When we reread the DIEs, somewhere up the call chain | |
13876 | THIS_CU->cu may already be in use. So we can't just free it and | |
13877 | replace its DIEs with the ones we read in. Instead, we leave those | |
13878 | DIEs alone (which can still be in use, e.g. in scan_partial_symbols), | |
13879 | and clobber THIS_CU->cu->partial_dies with the hash table for the new | |
13880 | set. */ | |
dee91e82 | 13881 | load_partial_comp_unit (per_cu); |
5afb4e99 DJ |
13882 | |
13883 | pd = find_partial_die_in_comp_unit (offset, per_cu->cu); | |
13884 | } | |
13885 | ||
13886 | if (pd == NULL) | |
13887 | internal_error (__FILE__, __LINE__, | |
3e43a32a MS |
13888 | _("could not find partial DIE 0x%x " |
13889 | "in cache [from module %s]\n"), | |
b64f50a1 | 13890 | offset.sect_off, bfd_get_filename (objfile->obfd)); |
5afb4e99 | 13891 | return pd; |
72bf9492 DJ |
13892 | } |
13893 | ||
abc72ce4 DE |
13894 | /* See if we can figure out if the class lives in a namespace. We do |
13895 | this by looking for a member function; its demangled name will | |
13896 | contain namespace info, if there is any. */ | |
13897 | ||
13898 | static void | |
13899 | guess_partial_die_structure_name (struct partial_die_info *struct_pdi, | |
13900 | struct dwarf2_cu *cu) | |
13901 | { | |
13902 | /* NOTE: carlton/2003-10-07: Getting the info this way changes | |
13903 | what template types look like, because the demangler | |
13904 | frequently doesn't give the same name as the debug info. We | |
13905 | could fix this by only using the demangled name to get the | |
13906 | prefix (but see comment in read_structure_type). */ | |
13907 | ||
13908 | struct partial_die_info *real_pdi; | |
13909 | struct partial_die_info *child_pdi; | |
13910 | ||
13911 | /* If this DIE (this DIE's specification, if any) has a parent, then | |
13912 | we should not do this. We'll prepend the parent's fully qualified | |
13913 | name when we create the partial symbol. */ | |
13914 | ||
13915 | real_pdi = struct_pdi; | |
13916 | while (real_pdi->has_specification) | |
36586728 TT |
13917 | real_pdi = find_partial_die (real_pdi->spec_offset, |
13918 | real_pdi->spec_is_dwz, cu); | |
abc72ce4 DE |
13919 | |
13920 | if (real_pdi->die_parent != NULL) | |
13921 | return; | |
13922 | ||
13923 | for (child_pdi = struct_pdi->die_child; | |
13924 | child_pdi != NULL; | |
13925 | child_pdi = child_pdi->die_sibling) | |
13926 | { | |
13927 | if (child_pdi->tag == DW_TAG_subprogram | |
13928 | && child_pdi->linkage_name != NULL) | |
13929 | { | |
13930 | char *actual_class_name | |
13931 | = language_class_name_from_physname (cu->language_defn, | |
13932 | child_pdi->linkage_name); | |
13933 | if (actual_class_name != NULL) | |
13934 | { | |
13935 | struct_pdi->name | |
10f0c4bb TT |
13936 | = obstack_copy0 (&cu->objfile->objfile_obstack, |
13937 | actual_class_name, | |
13938 | strlen (actual_class_name)); | |
abc72ce4 DE |
13939 | xfree (actual_class_name); |
13940 | } | |
13941 | break; | |
13942 | } | |
13943 | } | |
13944 | } | |
13945 | ||
72bf9492 DJ |
13946 | /* Adjust PART_DIE before generating a symbol for it. This function |
13947 | may set the is_external flag or change the DIE's name. */ | |
13948 | ||
13949 | static void | |
13950 | fixup_partial_die (struct partial_die_info *part_die, | |
13951 | struct dwarf2_cu *cu) | |
13952 | { | |
abc72ce4 DE |
13953 | /* Once we've fixed up a die, there's no point in doing so again. |
13954 | This also avoids a memory leak if we were to call | |
13955 | guess_partial_die_structure_name multiple times. */ | |
13956 | if (part_die->fixup_called) | |
13957 | return; | |
13958 | ||
72bf9492 DJ |
13959 | /* If we found a reference attribute and the DIE has no name, try |
13960 | to find a name in the referred to DIE. */ | |
13961 | ||
13962 | if (part_die->name == NULL && part_die->has_specification) | |
13963 | { | |
13964 | struct partial_die_info *spec_die; | |
72bf9492 | 13965 | |
36586728 TT |
13966 | spec_die = find_partial_die (part_die->spec_offset, |
13967 | part_die->spec_is_dwz, cu); | |
72bf9492 | 13968 | |
10b3939b | 13969 | fixup_partial_die (spec_die, cu); |
72bf9492 DJ |
13970 | |
13971 | if (spec_die->name) | |
13972 | { | |
13973 | part_die->name = spec_die->name; | |
13974 | ||
13975 | /* Copy DW_AT_external attribute if it is set. */ | |
13976 | if (spec_die->is_external) | |
13977 | part_die->is_external = spec_die->is_external; | |
13978 | } | |
13979 | } | |
13980 | ||
13981 | /* Set default names for some unnamed DIEs. */ | |
72bf9492 DJ |
13982 | |
13983 | if (part_die->name == NULL && part_die->tag == DW_TAG_namespace) | |
2b1dbab0 | 13984 | part_die->name = CP_ANONYMOUS_NAMESPACE_STR; |
72bf9492 | 13985 | |
abc72ce4 DE |
13986 | /* If there is no parent die to provide a namespace, and there are |
13987 | children, see if we can determine the namespace from their linkage | |
122d1940 | 13988 | name. */ |
abc72ce4 | 13989 | if (cu->language == language_cplus |
8b70b953 | 13990 | && !VEC_empty (dwarf2_section_info_def, dwarf2_per_objfile->types) |
abc72ce4 DE |
13991 | && part_die->die_parent == NULL |
13992 | && part_die->has_children | |
13993 | && (part_die->tag == DW_TAG_class_type | |
13994 | || part_die->tag == DW_TAG_structure_type | |
13995 | || part_die->tag == DW_TAG_union_type)) | |
13996 | guess_partial_die_structure_name (part_die, cu); | |
13997 | ||
53832f31 TT |
13998 | /* GCC might emit a nameless struct or union that has a linkage |
13999 | name. See http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
14000 | if (part_die->name == NULL | |
96408a79 SA |
14001 | && (part_die->tag == DW_TAG_class_type |
14002 | || part_die->tag == DW_TAG_interface_type | |
14003 | || part_die->tag == DW_TAG_structure_type | |
14004 | || part_die->tag == DW_TAG_union_type) | |
53832f31 TT |
14005 | && part_die->linkage_name != NULL) |
14006 | { | |
14007 | char *demangled; | |
14008 | ||
14009 | demangled = cplus_demangle (part_die->linkage_name, DMGL_TYPES); | |
14010 | if (demangled) | |
14011 | { | |
96408a79 SA |
14012 | const char *base; |
14013 | ||
14014 | /* Strip any leading namespaces/classes, keep only the base name. | |
14015 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
14016 | base = strrchr (demangled, ':'); | |
14017 | if (base && base > demangled && base[-1] == ':') | |
14018 | base++; | |
14019 | else | |
14020 | base = demangled; | |
14021 | ||
10f0c4bb TT |
14022 | part_die->name = obstack_copy0 (&cu->objfile->objfile_obstack, |
14023 | base, strlen (base)); | |
53832f31 TT |
14024 | xfree (demangled); |
14025 | } | |
14026 | } | |
14027 | ||
abc72ce4 | 14028 | part_die->fixup_called = 1; |
72bf9492 DJ |
14029 | } |
14030 | ||
a8329558 | 14031 | /* Read an attribute value described by an attribute form. */ |
c906108c | 14032 | |
fe1b8b76 | 14033 | static gdb_byte * |
dee91e82 DE |
14034 | read_attribute_value (const struct die_reader_specs *reader, |
14035 | struct attribute *attr, unsigned form, | |
14036 | gdb_byte *info_ptr) | |
c906108c | 14037 | { |
dee91e82 DE |
14038 | struct dwarf2_cu *cu = reader->cu; |
14039 | bfd *abfd = reader->abfd; | |
e7c27a73 | 14040 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
14041 | unsigned int bytes_read; |
14042 | struct dwarf_block *blk; | |
14043 | ||
a8329558 KW |
14044 | attr->form = form; |
14045 | switch (form) | |
c906108c | 14046 | { |
c906108c | 14047 | case DW_FORM_ref_addr: |
ae411497 | 14048 | if (cu->header.version == 2) |
4568ecf9 | 14049 | DW_UNSND (attr) = read_address (abfd, info_ptr, cu, &bytes_read); |
ae411497 | 14050 | else |
4568ecf9 DE |
14051 | DW_UNSND (attr) = read_offset (abfd, info_ptr, |
14052 | &cu->header, &bytes_read); | |
ae411497 TT |
14053 | info_ptr += bytes_read; |
14054 | break; | |
36586728 TT |
14055 | case DW_FORM_GNU_ref_alt: |
14056 | DW_UNSND (attr) = read_offset (abfd, info_ptr, &cu->header, &bytes_read); | |
14057 | info_ptr += bytes_read; | |
14058 | break; | |
ae411497 | 14059 | case DW_FORM_addr: |
e7c27a73 | 14060 | DW_ADDR (attr) = read_address (abfd, info_ptr, cu, &bytes_read); |
107d2387 | 14061 | info_ptr += bytes_read; |
c906108c SS |
14062 | break; |
14063 | case DW_FORM_block2: | |
7b5a2f43 | 14064 | blk = dwarf_alloc_block (cu); |
c906108c SS |
14065 | blk->size = read_2_bytes (abfd, info_ptr); |
14066 | info_ptr += 2; | |
14067 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
14068 | info_ptr += blk->size; | |
14069 | DW_BLOCK (attr) = blk; | |
14070 | break; | |
14071 | case DW_FORM_block4: | |
7b5a2f43 | 14072 | blk = dwarf_alloc_block (cu); |
c906108c SS |
14073 | blk->size = read_4_bytes (abfd, info_ptr); |
14074 | info_ptr += 4; | |
14075 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
14076 | info_ptr += blk->size; | |
14077 | DW_BLOCK (attr) = blk; | |
14078 | break; | |
14079 | case DW_FORM_data2: | |
14080 | DW_UNSND (attr) = read_2_bytes (abfd, info_ptr); | |
14081 | info_ptr += 2; | |
14082 | break; | |
14083 | case DW_FORM_data4: | |
14084 | DW_UNSND (attr) = read_4_bytes (abfd, info_ptr); | |
14085 | info_ptr += 4; | |
14086 | break; | |
14087 | case DW_FORM_data8: | |
14088 | DW_UNSND (attr) = read_8_bytes (abfd, info_ptr); | |
14089 | info_ptr += 8; | |
14090 | break; | |
2dc7f7b3 TT |
14091 | case DW_FORM_sec_offset: |
14092 | DW_UNSND (attr) = read_offset (abfd, info_ptr, &cu->header, &bytes_read); | |
14093 | info_ptr += bytes_read; | |
14094 | break; | |
c906108c | 14095 | case DW_FORM_string: |
9b1c24c8 | 14096 | DW_STRING (attr) = read_direct_string (abfd, info_ptr, &bytes_read); |
8285870a | 14097 | DW_STRING_IS_CANONICAL (attr) = 0; |
c906108c SS |
14098 | info_ptr += bytes_read; |
14099 | break; | |
4bdf3d34 | 14100 | case DW_FORM_strp: |
36586728 TT |
14101 | if (!cu->per_cu->is_dwz) |
14102 | { | |
14103 | DW_STRING (attr) = read_indirect_string (abfd, info_ptr, cu_header, | |
14104 | &bytes_read); | |
14105 | DW_STRING_IS_CANONICAL (attr) = 0; | |
14106 | info_ptr += bytes_read; | |
14107 | break; | |
14108 | } | |
14109 | /* FALLTHROUGH */ | |
14110 | case DW_FORM_GNU_strp_alt: | |
14111 | { | |
14112 | struct dwz_file *dwz = dwarf2_get_dwz_file (); | |
14113 | LONGEST str_offset = read_offset (abfd, info_ptr, cu_header, | |
14114 | &bytes_read); | |
14115 | ||
14116 | DW_STRING (attr) = read_indirect_string_from_dwz (dwz, str_offset); | |
14117 | DW_STRING_IS_CANONICAL (attr) = 0; | |
14118 | info_ptr += bytes_read; | |
14119 | } | |
4bdf3d34 | 14120 | break; |
2dc7f7b3 | 14121 | case DW_FORM_exprloc: |
c906108c | 14122 | case DW_FORM_block: |
7b5a2f43 | 14123 | blk = dwarf_alloc_block (cu); |
c906108c SS |
14124 | blk->size = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
14125 | info_ptr += bytes_read; | |
14126 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
14127 | info_ptr += blk->size; | |
14128 | DW_BLOCK (attr) = blk; | |
14129 | break; | |
14130 | case DW_FORM_block1: | |
7b5a2f43 | 14131 | blk = dwarf_alloc_block (cu); |
c906108c SS |
14132 | blk->size = read_1_byte (abfd, info_ptr); |
14133 | info_ptr += 1; | |
14134 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
14135 | info_ptr += blk->size; | |
14136 | DW_BLOCK (attr) = blk; | |
14137 | break; | |
14138 | case DW_FORM_data1: | |
14139 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
14140 | info_ptr += 1; | |
14141 | break; | |
14142 | case DW_FORM_flag: | |
14143 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
14144 | info_ptr += 1; | |
14145 | break; | |
2dc7f7b3 TT |
14146 | case DW_FORM_flag_present: |
14147 | DW_UNSND (attr) = 1; | |
14148 | break; | |
c906108c SS |
14149 | case DW_FORM_sdata: |
14150 | DW_SND (attr) = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
14151 | info_ptr += bytes_read; | |
14152 | break; | |
14153 | case DW_FORM_udata: | |
14154 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
14155 | info_ptr += bytes_read; | |
14156 | break; | |
14157 | case DW_FORM_ref1: | |
4568ecf9 DE |
14158 | DW_UNSND (attr) = (cu->header.offset.sect_off |
14159 | + read_1_byte (abfd, info_ptr)); | |
c906108c SS |
14160 | info_ptr += 1; |
14161 | break; | |
14162 | case DW_FORM_ref2: | |
4568ecf9 DE |
14163 | DW_UNSND (attr) = (cu->header.offset.sect_off |
14164 | + read_2_bytes (abfd, info_ptr)); | |
c906108c SS |
14165 | info_ptr += 2; |
14166 | break; | |
14167 | case DW_FORM_ref4: | |
4568ecf9 DE |
14168 | DW_UNSND (attr) = (cu->header.offset.sect_off |
14169 | + read_4_bytes (abfd, info_ptr)); | |
c906108c SS |
14170 | info_ptr += 4; |
14171 | break; | |
613e1657 | 14172 | case DW_FORM_ref8: |
4568ecf9 DE |
14173 | DW_UNSND (attr) = (cu->header.offset.sect_off |
14174 | + read_8_bytes (abfd, info_ptr)); | |
613e1657 KB |
14175 | info_ptr += 8; |
14176 | break; | |
55f1336d | 14177 | case DW_FORM_ref_sig8: |
348e048f DE |
14178 | /* Convert the signature to something we can record in DW_UNSND |
14179 | for later lookup. | |
14180 | NOTE: This is NULL if the type wasn't found. */ | |
14181 | DW_SIGNATURED_TYPE (attr) = | |
e319fa28 | 14182 | lookup_signatured_type (read_8_bytes (abfd, info_ptr)); |
348e048f DE |
14183 | info_ptr += 8; |
14184 | break; | |
c906108c | 14185 | case DW_FORM_ref_udata: |
4568ecf9 DE |
14186 | DW_UNSND (attr) = (cu->header.offset.sect_off |
14187 | + read_unsigned_leb128 (abfd, info_ptr, &bytes_read)); | |
c906108c SS |
14188 | info_ptr += bytes_read; |
14189 | break; | |
c906108c | 14190 | case DW_FORM_indirect: |
a8329558 KW |
14191 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
14192 | info_ptr += bytes_read; | |
dee91e82 | 14193 | info_ptr = read_attribute_value (reader, attr, form, info_ptr); |
a8329558 | 14194 | break; |
3019eac3 DE |
14195 | case DW_FORM_GNU_addr_index: |
14196 | if (reader->dwo_file == NULL) | |
14197 | { | |
14198 | /* For now flag a hard error. | |
14199 | Later we can turn this into a complaint. */ | |
14200 | error (_("Dwarf Error: %s found in non-DWO CU [in module %s]"), | |
14201 | dwarf_form_name (form), | |
14202 | bfd_get_filename (abfd)); | |
14203 | } | |
14204 | DW_ADDR (attr) = read_addr_index_from_leb128 (cu, info_ptr, &bytes_read); | |
14205 | info_ptr += bytes_read; | |
14206 | break; | |
14207 | case DW_FORM_GNU_str_index: | |
14208 | if (reader->dwo_file == NULL) | |
14209 | { | |
14210 | /* For now flag a hard error. | |
14211 | Later we can turn this into a complaint if warranted. */ | |
14212 | error (_("Dwarf Error: %s found in non-DWO CU [in module %s]"), | |
14213 | dwarf_form_name (form), | |
14214 | bfd_get_filename (abfd)); | |
14215 | } | |
14216 | { | |
14217 | ULONGEST str_index = | |
14218 | read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
14219 | ||
14220 | DW_STRING (attr) = read_str_index (reader, cu, str_index); | |
14221 | DW_STRING_IS_CANONICAL (attr) = 0; | |
14222 | info_ptr += bytes_read; | |
14223 | } | |
14224 | break; | |
c906108c | 14225 | default: |
8a3fe4f8 | 14226 | error (_("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]"), |
659b0389 ML |
14227 | dwarf_form_name (form), |
14228 | bfd_get_filename (abfd)); | |
c906108c | 14229 | } |
28e94949 | 14230 | |
36586728 TT |
14231 | /* Super hack. */ |
14232 | if (cu->per_cu->is_dwz && is_ref_attr (attr)) | |
14233 | attr->form = DW_FORM_GNU_ref_alt; | |
14234 | ||
28e94949 JB |
14235 | /* We have seen instances where the compiler tried to emit a byte |
14236 | size attribute of -1 which ended up being encoded as an unsigned | |
14237 | 0xffffffff. Although 0xffffffff is technically a valid size value, | |
14238 | an object of this size seems pretty unlikely so we can relatively | |
14239 | safely treat these cases as if the size attribute was invalid and | |
14240 | treat them as zero by default. */ | |
14241 | if (attr->name == DW_AT_byte_size | |
14242 | && form == DW_FORM_data4 | |
14243 | && DW_UNSND (attr) >= 0xffffffff) | |
01c66ae6 JB |
14244 | { |
14245 | complaint | |
14246 | (&symfile_complaints, | |
43bbcdc2 PH |
14247 | _("Suspicious DW_AT_byte_size value treated as zero instead of %s"), |
14248 | hex_string (DW_UNSND (attr))); | |
01c66ae6 JB |
14249 | DW_UNSND (attr) = 0; |
14250 | } | |
28e94949 | 14251 | |
c906108c SS |
14252 | return info_ptr; |
14253 | } | |
14254 | ||
a8329558 KW |
14255 | /* Read an attribute described by an abbreviated attribute. */ |
14256 | ||
fe1b8b76 | 14257 | static gdb_byte * |
dee91e82 DE |
14258 | read_attribute (const struct die_reader_specs *reader, |
14259 | struct attribute *attr, struct attr_abbrev *abbrev, | |
14260 | gdb_byte *info_ptr) | |
a8329558 KW |
14261 | { |
14262 | attr->name = abbrev->name; | |
dee91e82 | 14263 | return read_attribute_value (reader, attr, abbrev->form, info_ptr); |
a8329558 KW |
14264 | } |
14265 | ||
0963b4bd | 14266 | /* Read dwarf information from a buffer. */ |
c906108c SS |
14267 | |
14268 | static unsigned int | |
a1855c1d | 14269 | read_1_byte (bfd *abfd, const gdb_byte *buf) |
c906108c | 14270 | { |
fe1b8b76 | 14271 | return bfd_get_8 (abfd, buf); |
c906108c SS |
14272 | } |
14273 | ||
14274 | static int | |
a1855c1d | 14275 | read_1_signed_byte (bfd *abfd, const gdb_byte *buf) |
c906108c | 14276 | { |
fe1b8b76 | 14277 | return bfd_get_signed_8 (abfd, buf); |
c906108c SS |
14278 | } |
14279 | ||
14280 | static unsigned int | |
a1855c1d | 14281 | read_2_bytes (bfd *abfd, const gdb_byte *buf) |
c906108c | 14282 | { |
fe1b8b76 | 14283 | return bfd_get_16 (abfd, buf); |
c906108c SS |
14284 | } |
14285 | ||
21ae7a4d | 14286 | static int |
a1855c1d | 14287 | read_2_signed_bytes (bfd *abfd, const gdb_byte *buf) |
21ae7a4d JK |
14288 | { |
14289 | return bfd_get_signed_16 (abfd, buf); | |
14290 | } | |
14291 | ||
c906108c | 14292 | static unsigned int |
a1855c1d | 14293 | read_4_bytes (bfd *abfd, const gdb_byte *buf) |
c906108c | 14294 | { |
fe1b8b76 | 14295 | return bfd_get_32 (abfd, buf); |
c906108c SS |
14296 | } |
14297 | ||
21ae7a4d | 14298 | static int |
a1855c1d | 14299 | read_4_signed_bytes (bfd *abfd, const gdb_byte *buf) |
21ae7a4d JK |
14300 | { |
14301 | return bfd_get_signed_32 (abfd, buf); | |
14302 | } | |
14303 | ||
93311388 | 14304 | static ULONGEST |
a1855c1d | 14305 | read_8_bytes (bfd *abfd, const gdb_byte *buf) |
c906108c | 14306 | { |
fe1b8b76 | 14307 | return bfd_get_64 (abfd, buf); |
c906108c SS |
14308 | } |
14309 | ||
14310 | static CORE_ADDR | |
fe1b8b76 | 14311 | read_address (bfd *abfd, gdb_byte *buf, struct dwarf2_cu *cu, |
891d2f0b | 14312 | unsigned int *bytes_read) |
c906108c | 14313 | { |
e7c27a73 | 14314 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
14315 | CORE_ADDR retval = 0; |
14316 | ||
107d2387 | 14317 | if (cu_header->signed_addr_p) |
c906108c | 14318 | { |
107d2387 AC |
14319 | switch (cu_header->addr_size) |
14320 | { | |
14321 | case 2: | |
fe1b8b76 | 14322 | retval = bfd_get_signed_16 (abfd, buf); |
107d2387 AC |
14323 | break; |
14324 | case 4: | |
fe1b8b76 | 14325 | retval = bfd_get_signed_32 (abfd, buf); |
107d2387 AC |
14326 | break; |
14327 | case 8: | |
fe1b8b76 | 14328 | retval = bfd_get_signed_64 (abfd, buf); |
107d2387 AC |
14329 | break; |
14330 | default: | |
8e65ff28 | 14331 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 14332 | _("read_address: bad switch, signed [in module %s]"), |
659b0389 | 14333 | bfd_get_filename (abfd)); |
107d2387 AC |
14334 | } |
14335 | } | |
14336 | else | |
14337 | { | |
14338 | switch (cu_header->addr_size) | |
14339 | { | |
14340 | case 2: | |
fe1b8b76 | 14341 | retval = bfd_get_16 (abfd, buf); |
107d2387 AC |
14342 | break; |
14343 | case 4: | |
fe1b8b76 | 14344 | retval = bfd_get_32 (abfd, buf); |
107d2387 AC |
14345 | break; |
14346 | case 8: | |
fe1b8b76 | 14347 | retval = bfd_get_64 (abfd, buf); |
107d2387 AC |
14348 | break; |
14349 | default: | |
8e65ff28 | 14350 | internal_error (__FILE__, __LINE__, |
a73c6dcd MS |
14351 | _("read_address: bad switch, " |
14352 | "unsigned [in module %s]"), | |
659b0389 | 14353 | bfd_get_filename (abfd)); |
107d2387 | 14354 | } |
c906108c | 14355 | } |
64367e0a | 14356 | |
107d2387 AC |
14357 | *bytes_read = cu_header->addr_size; |
14358 | return retval; | |
c906108c SS |
14359 | } |
14360 | ||
f7ef9339 | 14361 | /* Read the initial length from a section. The (draft) DWARF 3 |
613e1657 KB |
14362 | specification allows the initial length to take up either 4 bytes |
14363 | or 12 bytes. If the first 4 bytes are 0xffffffff, then the next 8 | |
14364 | bytes describe the length and all offsets will be 8 bytes in length | |
14365 | instead of 4. | |
14366 | ||
f7ef9339 KB |
14367 | An older, non-standard 64-bit format is also handled by this |
14368 | function. The older format in question stores the initial length | |
14369 | as an 8-byte quantity without an escape value. Lengths greater | |
14370 | than 2^32 aren't very common which means that the initial 4 bytes | |
14371 | is almost always zero. Since a length value of zero doesn't make | |
14372 | sense for the 32-bit format, this initial zero can be considered to | |
14373 | be an escape value which indicates the presence of the older 64-bit | |
14374 | format. As written, the code can't detect (old format) lengths | |
917c78fc MK |
14375 | greater than 4GB. If it becomes necessary to handle lengths |
14376 | somewhat larger than 4GB, we could allow other small values (such | |
14377 | as the non-sensical values of 1, 2, and 3) to also be used as | |
14378 | escape values indicating the presence of the old format. | |
f7ef9339 | 14379 | |
917c78fc MK |
14380 | The value returned via bytes_read should be used to increment the |
14381 | relevant pointer after calling read_initial_length(). | |
c764a876 | 14382 | |
613e1657 KB |
14383 | [ Note: read_initial_length() and read_offset() are based on the |
14384 | document entitled "DWARF Debugging Information Format", revision | |
f7ef9339 | 14385 | 3, draft 8, dated November 19, 2001. This document was obtained |
613e1657 KB |
14386 | from: |
14387 | ||
f7ef9339 | 14388 | http://reality.sgiweb.org/davea/dwarf3-draft8-011125.pdf |
6e70227d | 14389 | |
613e1657 KB |
14390 | This document is only a draft and is subject to change. (So beware.) |
14391 | ||
f7ef9339 | 14392 | Details regarding the older, non-standard 64-bit format were |
917c78fc MK |
14393 | determined empirically by examining 64-bit ELF files produced by |
14394 | the SGI toolchain on an IRIX 6.5 machine. | |
f7ef9339 KB |
14395 | |
14396 | - Kevin, July 16, 2002 | |
613e1657 KB |
14397 | ] */ |
14398 | ||
14399 | static LONGEST | |
c764a876 | 14400 | read_initial_length (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read) |
613e1657 | 14401 | { |
fe1b8b76 | 14402 | LONGEST length = bfd_get_32 (abfd, buf); |
613e1657 | 14403 | |
dd373385 | 14404 | if (length == 0xffffffff) |
613e1657 | 14405 | { |
fe1b8b76 | 14406 | length = bfd_get_64 (abfd, buf + 4); |
613e1657 | 14407 | *bytes_read = 12; |
613e1657 | 14408 | } |
dd373385 | 14409 | else if (length == 0) |
f7ef9339 | 14410 | { |
dd373385 | 14411 | /* Handle the (non-standard) 64-bit DWARF2 format used by IRIX. */ |
fe1b8b76 | 14412 | length = bfd_get_64 (abfd, buf); |
f7ef9339 | 14413 | *bytes_read = 8; |
f7ef9339 | 14414 | } |
613e1657 KB |
14415 | else |
14416 | { | |
14417 | *bytes_read = 4; | |
613e1657 KB |
14418 | } |
14419 | ||
c764a876 DE |
14420 | return length; |
14421 | } | |
dd373385 | 14422 | |
c764a876 DE |
14423 | /* Cover function for read_initial_length. |
14424 | Returns the length of the object at BUF, and stores the size of the | |
14425 | initial length in *BYTES_READ and stores the size that offsets will be in | |
14426 | *OFFSET_SIZE. | |
14427 | If the initial length size is not equivalent to that specified in | |
14428 | CU_HEADER then issue a complaint. | |
14429 | This is useful when reading non-comp-unit headers. */ | |
dd373385 | 14430 | |
c764a876 DE |
14431 | static LONGEST |
14432 | read_checked_initial_length_and_offset (bfd *abfd, gdb_byte *buf, | |
14433 | const struct comp_unit_head *cu_header, | |
14434 | unsigned int *bytes_read, | |
14435 | unsigned int *offset_size) | |
14436 | { | |
14437 | LONGEST length = read_initial_length (abfd, buf, bytes_read); | |
14438 | ||
14439 | gdb_assert (cu_header->initial_length_size == 4 | |
14440 | || cu_header->initial_length_size == 8 | |
14441 | || cu_header->initial_length_size == 12); | |
14442 | ||
14443 | if (cu_header->initial_length_size != *bytes_read) | |
14444 | complaint (&symfile_complaints, | |
14445 | _("intermixed 32-bit and 64-bit DWARF sections")); | |
dd373385 | 14446 | |
c764a876 | 14447 | *offset_size = (*bytes_read == 4) ? 4 : 8; |
dd373385 | 14448 | return length; |
613e1657 KB |
14449 | } |
14450 | ||
14451 | /* Read an offset from the data stream. The size of the offset is | |
917c78fc | 14452 | given by cu_header->offset_size. */ |
613e1657 KB |
14453 | |
14454 | static LONGEST | |
fe1b8b76 | 14455 | read_offset (bfd *abfd, gdb_byte *buf, const struct comp_unit_head *cu_header, |
891d2f0b | 14456 | unsigned int *bytes_read) |
c764a876 DE |
14457 | { |
14458 | LONGEST offset = read_offset_1 (abfd, buf, cu_header->offset_size); | |
9a619af0 | 14459 | |
c764a876 DE |
14460 | *bytes_read = cu_header->offset_size; |
14461 | return offset; | |
14462 | } | |
14463 | ||
14464 | /* Read an offset from the data stream. */ | |
14465 | ||
14466 | static LONGEST | |
14467 | read_offset_1 (bfd *abfd, gdb_byte *buf, unsigned int offset_size) | |
613e1657 KB |
14468 | { |
14469 | LONGEST retval = 0; | |
14470 | ||
c764a876 | 14471 | switch (offset_size) |
613e1657 KB |
14472 | { |
14473 | case 4: | |
fe1b8b76 | 14474 | retval = bfd_get_32 (abfd, buf); |
613e1657 KB |
14475 | break; |
14476 | case 8: | |
fe1b8b76 | 14477 | retval = bfd_get_64 (abfd, buf); |
613e1657 KB |
14478 | break; |
14479 | default: | |
8e65ff28 | 14480 | internal_error (__FILE__, __LINE__, |
c764a876 | 14481 | _("read_offset_1: bad switch [in module %s]"), |
659b0389 | 14482 | bfd_get_filename (abfd)); |
613e1657 KB |
14483 | } |
14484 | ||
917c78fc | 14485 | return retval; |
613e1657 KB |
14486 | } |
14487 | ||
fe1b8b76 JB |
14488 | static gdb_byte * |
14489 | read_n_bytes (bfd *abfd, gdb_byte *buf, unsigned int size) | |
c906108c SS |
14490 | { |
14491 | /* If the size of a host char is 8 bits, we can return a pointer | |
14492 | to the buffer, otherwise we have to copy the data to a buffer | |
14493 | allocated on the temporary obstack. */ | |
4bdf3d34 | 14494 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c | 14495 | return buf; |
c906108c SS |
14496 | } |
14497 | ||
14498 | static char * | |
9b1c24c8 | 14499 | read_direct_string (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read_ptr) |
c906108c SS |
14500 | { |
14501 | /* If the size of a host char is 8 bits, we can return a pointer | |
14502 | to the string, otherwise we have to copy the string to a buffer | |
14503 | allocated on the temporary obstack. */ | |
4bdf3d34 | 14504 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c SS |
14505 | if (*buf == '\0') |
14506 | { | |
14507 | *bytes_read_ptr = 1; | |
14508 | return NULL; | |
14509 | } | |
fe1b8b76 JB |
14510 | *bytes_read_ptr = strlen ((char *) buf) + 1; |
14511 | return (char *) buf; | |
4bdf3d34 JJ |
14512 | } |
14513 | ||
14514 | static char * | |
cf2c3c16 | 14515 | read_indirect_string_at_offset (bfd *abfd, LONGEST str_offset) |
4bdf3d34 | 14516 | { |
be391dca | 14517 | dwarf2_read_section (dwarf2_per_objfile->objfile, &dwarf2_per_objfile->str); |
dce234bc | 14518 | if (dwarf2_per_objfile->str.buffer == NULL) |
cf2c3c16 TT |
14519 | error (_("DW_FORM_strp used without .debug_str section [in module %s]"), |
14520 | bfd_get_filename (abfd)); | |
dce234bc | 14521 | if (str_offset >= dwarf2_per_objfile->str.size) |
cf2c3c16 TT |
14522 | error (_("DW_FORM_strp pointing outside of " |
14523 | ".debug_str section [in module %s]"), | |
14524 | bfd_get_filename (abfd)); | |
4bdf3d34 | 14525 | gdb_assert (HOST_CHAR_BIT == 8); |
dce234bc | 14526 | if (dwarf2_per_objfile->str.buffer[str_offset] == '\0') |
4bdf3d34 | 14527 | return NULL; |
dce234bc | 14528 | return (char *) (dwarf2_per_objfile->str.buffer + str_offset); |
c906108c SS |
14529 | } |
14530 | ||
36586728 TT |
14531 | /* Read a string at offset STR_OFFSET in the .debug_str section from |
14532 | the .dwz file DWZ. Throw an error if the offset is too large. If | |
14533 | the string consists of a single NUL byte, return NULL; otherwise | |
14534 | return a pointer to the string. */ | |
14535 | ||
14536 | static char * | |
14537 | read_indirect_string_from_dwz (struct dwz_file *dwz, LONGEST str_offset) | |
14538 | { | |
14539 | dwarf2_read_section (dwarf2_per_objfile->objfile, &dwz->str); | |
14540 | ||
14541 | if (dwz->str.buffer == NULL) | |
14542 | error (_("DW_FORM_GNU_strp_alt used without .debug_str " | |
14543 | "section [in module %s]"), | |
14544 | bfd_get_filename (dwz->dwz_bfd)); | |
14545 | if (str_offset >= dwz->str.size) | |
14546 | error (_("DW_FORM_GNU_strp_alt pointing outside of " | |
14547 | ".debug_str section [in module %s]"), | |
14548 | bfd_get_filename (dwz->dwz_bfd)); | |
14549 | gdb_assert (HOST_CHAR_BIT == 8); | |
14550 | if (dwz->str.buffer[str_offset] == '\0') | |
14551 | return NULL; | |
14552 | return (char *) (dwz->str.buffer + str_offset); | |
14553 | } | |
14554 | ||
cf2c3c16 TT |
14555 | static char * |
14556 | read_indirect_string (bfd *abfd, gdb_byte *buf, | |
14557 | const struct comp_unit_head *cu_header, | |
14558 | unsigned int *bytes_read_ptr) | |
14559 | { | |
14560 | LONGEST str_offset = read_offset (abfd, buf, cu_header, bytes_read_ptr); | |
14561 | ||
14562 | return read_indirect_string_at_offset (abfd, str_offset); | |
14563 | } | |
14564 | ||
12df843f | 14565 | static ULONGEST |
fe1b8b76 | 14566 | read_unsigned_leb128 (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read_ptr) |
c906108c | 14567 | { |
12df843f | 14568 | ULONGEST result; |
ce5d95e1 | 14569 | unsigned int num_read; |
c906108c SS |
14570 | int i, shift; |
14571 | unsigned char byte; | |
14572 | ||
14573 | result = 0; | |
14574 | shift = 0; | |
14575 | num_read = 0; | |
14576 | i = 0; | |
14577 | while (1) | |
14578 | { | |
fe1b8b76 | 14579 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
14580 | buf++; |
14581 | num_read++; | |
12df843f | 14582 | result |= ((ULONGEST) (byte & 127) << shift); |
c906108c SS |
14583 | if ((byte & 128) == 0) |
14584 | { | |
14585 | break; | |
14586 | } | |
14587 | shift += 7; | |
14588 | } | |
14589 | *bytes_read_ptr = num_read; | |
14590 | return result; | |
14591 | } | |
14592 | ||
12df843f | 14593 | static LONGEST |
fe1b8b76 | 14594 | read_signed_leb128 (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read_ptr) |
c906108c | 14595 | { |
12df843f | 14596 | LONGEST result; |
77e0b926 | 14597 | int i, shift, num_read; |
c906108c SS |
14598 | unsigned char byte; |
14599 | ||
14600 | result = 0; | |
14601 | shift = 0; | |
c906108c SS |
14602 | num_read = 0; |
14603 | i = 0; | |
14604 | while (1) | |
14605 | { | |
fe1b8b76 | 14606 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
14607 | buf++; |
14608 | num_read++; | |
12df843f | 14609 | result |= ((LONGEST) (byte & 127) << shift); |
c906108c SS |
14610 | shift += 7; |
14611 | if ((byte & 128) == 0) | |
14612 | { | |
14613 | break; | |
14614 | } | |
14615 | } | |
77e0b926 | 14616 | if ((shift < 8 * sizeof (result)) && (byte & 0x40)) |
12df843f | 14617 | result |= -(((LONGEST) 1) << shift); |
c906108c SS |
14618 | *bytes_read_ptr = num_read; |
14619 | return result; | |
14620 | } | |
14621 | ||
3019eac3 DE |
14622 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. |
14623 | ADDR_BASE is the DW_AT_GNU_addr_base attribute or zero. | |
14624 | ADDR_SIZE is the size of addresses from the CU header. */ | |
14625 | ||
14626 | static CORE_ADDR | |
14627 | read_addr_index_1 (unsigned int addr_index, ULONGEST addr_base, int addr_size) | |
14628 | { | |
14629 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
14630 | bfd *abfd = objfile->obfd; | |
14631 | const gdb_byte *info_ptr; | |
14632 | ||
14633 | dwarf2_read_section (objfile, &dwarf2_per_objfile->addr); | |
14634 | if (dwarf2_per_objfile->addr.buffer == NULL) | |
14635 | error (_("DW_FORM_addr_index used without .debug_addr section [in module %s]"), | |
14636 | objfile->name); | |
14637 | if (addr_base + addr_index * addr_size >= dwarf2_per_objfile->addr.size) | |
14638 | error (_("DW_FORM_addr_index pointing outside of " | |
14639 | ".debug_addr section [in module %s]"), | |
14640 | objfile->name); | |
14641 | info_ptr = (dwarf2_per_objfile->addr.buffer | |
14642 | + addr_base + addr_index * addr_size); | |
14643 | if (addr_size == 4) | |
14644 | return bfd_get_32 (abfd, info_ptr); | |
14645 | else | |
14646 | return bfd_get_64 (abfd, info_ptr); | |
14647 | } | |
14648 | ||
14649 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. */ | |
14650 | ||
14651 | static CORE_ADDR | |
14652 | read_addr_index (struct dwarf2_cu *cu, unsigned int addr_index) | |
14653 | { | |
14654 | return read_addr_index_1 (addr_index, cu->addr_base, cu->header.addr_size); | |
14655 | } | |
14656 | ||
14657 | /* Given a pointer to an leb128 value, fetch the value from .debug_addr. */ | |
14658 | ||
14659 | static CORE_ADDR | |
14660 | read_addr_index_from_leb128 (struct dwarf2_cu *cu, gdb_byte *info_ptr, | |
14661 | unsigned int *bytes_read) | |
14662 | { | |
14663 | bfd *abfd = cu->objfile->obfd; | |
14664 | unsigned int addr_index = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
14665 | ||
14666 | return read_addr_index (cu, addr_index); | |
14667 | } | |
14668 | ||
14669 | /* Data structure to pass results from dwarf2_read_addr_index_reader | |
14670 | back to dwarf2_read_addr_index. */ | |
14671 | ||
14672 | struct dwarf2_read_addr_index_data | |
14673 | { | |
14674 | ULONGEST addr_base; | |
14675 | int addr_size; | |
14676 | }; | |
14677 | ||
14678 | /* die_reader_func for dwarf2_read_addr_index. */ | |
14679 | ||
14680 | static void | |
14681 | dwarf2_read_addr_index_reader (const struct die_reader_specs *reader, | |
14682 | gdb_byte *info_ptr, | |
14683 | struct die_info *comp_unit_die, | |
14684 | int has_children, | |
14685 | void *data) | |
14686 | { | |
14687 | struct dwarf2_cu *cu = reader->cu; | |
14688 | struct dwarf2_read_addr_index_data *aidata = | |
14689 | (struct dwarf2_read_addr_index_data *) data; | |
14690 | ||
14691 | aidata->addr_base = cu->addr_base; | |
14692 | aidata->addr_size = cu->header.addr_size; | |
14693 | } | |
14694 | ||
14695 | /* Given an index in .debug_addr, fetch the value. | |
14696 | NOTE: This can be called during dwarf expression evaluation, | |
14697 | long after the debug information has been read, and thus per_cu->cu | |
14698 | may no longer exist. */ | |
14699 | ||
14700 | CORE_ADDR | |
14701 | dwarf2_read_addr_index (struct dwarf2_per_cu_data *per_cu, | |
14702 | unsigned int addr_index) | |
14703 | { | |
14704 | struct objfile *objfile = per_cu->objfile; | |
14705 | struct dwarf2_cu *cu = per_cu->cu; | |
14706 | ULONGEST addr_base; | |
14707 | int addr_size; | |
14708 | ||
14709 | /* This is intended to be called from outside this file. */ | |
14710 | dw2_setup (objfile); | |
14711 | ||
14712 | /* We need addr_base and addr_size. | |
14713 | If we don't have PER_CU->cu, we have to get it. | |
14714 | Nasty, but the alternative is storing the needed info in PER_CU, | |
14715 | which at this point doesn't seem justified: it's not clear how frequently | |
14716 | it would get used and it would increase the size of every PER_CU. | |
14717 | Entry points like dwarf2_per_cu_addr_size do a similar thing | |
14718 | so we're not in uncharted territory here. | |
14719 | Alas we need to be a bit more complicated as addr_base is contained | |
14720 | in the DIE. | |
14721 | ||
14722 | We don't need to read the entire CU(/TU). | |
14723 | We just need the header and top level die. | |
a1b64ce1 | 14724 | |
3019eac3 | 14725 | IWBN to use the aging mechanism to let us lazily later discard the CU. |
a1b64ce1 | 14726 | For now we skip this optimization. */ |
3019eac3 DE |
14727 | |
14728 | if (cu != NULL) | |
14729 | { | |
14730 | addr_base = cu->addr_base; | |
14731 | addr_size = cu->header.addr_size; | |
14732 | } | |
14733 | else | |
14734 | { | |
14735 | struct dwarf2_read_addr_index_data aidata; | |
14736 | ||
a1b64ce1 DE |
14737 | /* Note: We can't use init_cutu_and_read_dies_simple here, |
14738 | we need addr_base. */ | |
14739 | init_cutu_and_read_dies (per_cu, NULL, 0, 0, | |
14740 | dwarf2_read_addr_index_reader, &aidata); | |
3019eac3 DE |
14741 | addr_base = aidata.addr_base; |
14742 | addr_size = aidata.addr_size; | |
14743 | } | |
14744 | ||
14745 | return read_addr_index_1 (addr_index, addr_base, addr_size); | |
14746 | } | |
14747 | ||
14748 | /* Given a DW_AT_str_index, fetch the string. */ | |
14749 | ||
14750 | static char * | |
14751 | read_str_index (const struct die_reader_specs *reader, | |
14752 | struct dwarf2_cu *cu, ULONGEST str_index) | |
14753 | { | |
14754 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
14755 | const char *dwo_name = objfile->name; | |
14756 | bfd *abfd = objfile->obfd; | |
14757 | struct dwo_sections *sections = &reader->dwo_file->sections; | |
14758 | gdb_byte *info_ptr; | |
14759 | ULONGEST str_offset; | |
14760 | ||
14761 | dwarf2_read_section (objfile, §ions->str); | |
14762 | dwarf2_read_section (objfile, §ions->str_offsets); | |
14763 | if (sections->str.buffer == NULL) | |
14764 | error (_("DW_FORM_str_index used without .debug_str.dwo section" | |
14765 | " in CU at offset 0x%lx [in module %s]"), | |
14766 | (long) cu->header.offset.sect_off, dwo_name); | |
14767 | if (sections->str_offsets.buffer == NULL) | |
14768 | error (_("DW_FORM_str_index used without .debug_str_offsets.dwo section" | |
14769 | " in CU at offset 0x%lx [in module %s]"), | |
14770 | (long) cu->header.offset.sect_off, dwo_name); | |
14771 | if (str_index * cu->header.offset_size >= sections->str_offsets.size) | |
14772 | error (_("DW_FORM_str_index pointing outside of .debug_str_offsets.dwo" | |
14773 | " section in CU at offset 0x%lx [in module %s]"), | |
14774 | (long) cu->header.offset.sect_off, dwo_name); | |
14775 | info_ptr = (sections->str_offsets.buffer | |
14776 | + str_index * cu->header.offset_size); | |
14777 | if (cu->header.offset_size == 4) | |
14778 | str_offset = bfd_get_32 (abfd, info_ptr); | |
14779 | else | |
14780 | str_offset = bfd_get_64 (abfd, info_ptr); | |
14781 | if (str_offset >= sections->str.size) | |
14782 | error (_("Offset from DW_FORM_str_index pointing outside of" | |
14783 | " .debug_str.dwo section in CU at offset 0x%lx [in module %s]"), | |
14784 | (long) cu->header.offset.sect_off, dwo_name); | |
14785 | return (char *) (sections->str.buffer + str_offset); | |
14786 | } | |
14787 | ||
3019eac3 DE |
14788 | /* Return the length of an LEB128 number in BUF. */ |
14789 | ||
14790 | static int | |
14791 | leb128_size (const gdb_byte *buf) | |
14792 | { | |
14793 | const gdb_byte *begin = buf; | |
14794 | gdb_byte byte; | |
14795 | ||
14796 | while (1) | |
14797 | { | |
14798 | byte = *buf++; | |
14799 | if ((byte & 128) == 0) | |
14800 | return buf - begin; | |
14801 | } | |
14802 | } | |
14803 | ||
c906108c | 14804 | static void |
e142c38c | 14805 | set_cu_language (unsigned int lang, struct dwarf2_cu *cu) |
c906108c SS |
14806 | { |
14807 | switch (lang) | |
14808 | { | |
14809 | case DW_LANG_C89: | |
76bee0cc | 14810 | case DW_LANG_C99: |
c906108c | 14811 | case DW_LANG_C: |
e142c38c | 14812 | cu->language = language_c; |
c906108c SS |
14813 | break; |
14814 | case DW_LANG_C_plus_plus: | |
e142c38c | 14815 | cu->language = language_cplus; |
c906108c | 14816 | break; |
6aecb9c2 JB |
14817 | case DW_LANG_D: |
14818 | cu->language = language_d; | |
14819 | break; | |
c906108c SS |
14820 | case DW_LANG_Fortran77: |
14821 | case DW_LANG_Fortran90: | |
b21b22e0 | 14822 | case DW_LANG_Fortran95: |
e142c38c | 14823 | cu->language = language_fortran; |
c906108c | 14824 | break; |
a766d390 DE |
14825 | case DW_LANG_Go: |
14826 | cu->language = language_go; | |
14827 | break; | |
c906108c | 14828 | case DW_LANG_Mips_Assembler: |
e142c38c | 14829 | cu->language = language_asm; |
c906108c | 14830 | break; |
bebd888e | 14831 | case DW_LANG_Java: |
e142c38c | 14832 | cu->language = language_java; |
bebd888e | 14833 | break; |
c906108c | 14834 | case DW_LANG_Ada83: |
8aaf0b47 | 14835 | case DW_LANG_Ada95: |
bc5f45f8 JB |
14836 | cu->language = language_ada; |
14837 | break; | |
72019c9c GM |
14838 | case DW_LANG_Modula2: |
14839 | cu->language = language_m2; | |
14840 | break; | |
fe8e67fd PM |
14841 | case DW_LANG_Pascal83: |
14842 | cu->language = language_pascal; | |
14843 | break; | |
22566fbd DJ |
14844 | case DW_LANG_ObjC: |
14845 | cu->language = language_objc; | |
14846 | break; | |
c906108c SS |
14847 | case DW_LANG_Cobol74: |
14848 | case DW_LANG_Cobol85: | |
c906108c | 14849 | default: |
e142c38c | 14850 | cu->language = language_minimal; |
c906108c SS |
14851 | break; |
14852 | } | |
e142c38c | 14853 | cu->language_defn = language_def (cu->language); |
c906108c SS |
14854 | } |
14855 | ||
14856 | /* Return the named attribute or NULL if not there. */ | |
14857 | ||
14858 | static struct attribute * | |
e142c38c | 14859 | dwarf2_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) |
c906108c | 14860 | { |
a48e046c | 14861 | for (;;) |
c906108c | 14862 | { |
a48e046c TT |
14863 | unsigned int i; |
14864 | struct attribute *spec = NULL; | |
14865 | ||
14866 | for (i = 0; i < die->num_attrs; ++i) | |
14867 | { | |
14868 | if (die->attrs[i].name == name) | |
14869 | return &die->attrs[i]; | |
14870 | if (die->attrs[i].name == DW_AT_specification | |
14871 | || die->attrs[i].name == DW_AT_abstract_origin) | |
14872 | spec = &die->attrs[i]; | |
14873 | } | |
14874 | ||
14875 | if (!spec) | |
14876 | break; | |
c906108c | 14877 | |
f2f0e013 | 14878 | die = follow_die_ref (die, spec, &cu); |
f2f0e013 | 14879 | } |
c5aa993b | 14880 | |
c906108c SS |
14881 | return NULL; |
14882 | } | |
14883 | ||
348e048f DE |
14884 | /* Return the named attribute or NULL if not there, |
14885 | but do not follow DW_AT_specification, etc. | |
14886 | This is for use in contexts where we're reading .debug_types dies. | |
14887 | Following DW_AT_specification, DW_AT_abstract_origin will take us | |
14888 | back up the chain, and we want to go down. */ | |
14889 | ||
14890 | static struct attribute * | |
45e58e77 | 14891 | dwarf2_attr_no_follow (struct die_info *die, unsigned int name) |
348e048f DE |
14892 | { |
14893 | unsigned int i; | |
14894 | ||
14895 | for (i = 0; i < die->num_attrs; ++i) | |
14896 | if (die->attrs[i].name == name) | |
14897 | return &die->attrs[i]; | |
14898 | ||
14899 | return NULL; | |
14900 | } | |
14901 | ||
05cf31d1 JB |
14902 | /* Return non-zero iff the attribute NAME is defined for the given DIE, |
14903 | and holds a non-zero value. This function should only be used for | |
2dc7f7b3 | 14904 | DW_FORM_flag or DW_FORM_flag_present attributes. */ |
05cf31d1 JB |
14905 | |
14906 | static int | |
14907 | dwarf2_flag_true_p (struct die_info *die, unsigned name, struct dwarf2_cu *cu) | |
14908 | { | |
14909 | struct attribute *attr = dwarf2_attr (die, name, cu); | |
14910 | ||
14911 | return (attr && DW_UNSND (attr)); | |
14912 | } | |
14913 | ||
3ca72b44 | 14914 | static int |
e142c38c | 14915 | die_is_declaration (struct die_info *die, struct dwarf2_cu *cu) |
3ca72b44 | 14916 | { |
05cf31d1 JB |
14917 | /* A DIE is a declaration if it has a DW_AT_declaration attribute |
14918 | which value is non-zero. However, we have to be careful with | |
14919 | DIEs having a DW_AT_specification attribute, because dwarf2_attr() | |
14920 | (via dwarf2_flag_true_p) follows this attribute. So we may | |
14921 | end up accidently finding a declaration attribute that belongs | |
14922 | to a different DIE referenced by the specification attribute, | |
14923 | even though the given DIE does not have a declaration attribute. */ | |
14924 | return (dwarf2_flag_true_p (die, DW_AT_declaration, cu) | |
14925 | && dwarf2_attr (die, DW_AT_specification, cu) == NULL); | |
3ca72b44 AC |
14926 | } |
14927 | ||
63d06c5c | 14928 | /* Return the die giving the specification for DIE, if there is |
f2f0e013 | 14929 | one. *SPEC_CU is the CU containing DIE on input, and the CU |
edb3359d DJ |
14930 | containing the return value on output. If there is no |
14931 | specification, but there is an abstract origin, that is | |
14932 | returned. */ | |
63d06c5c DC |
14933 | |
14934 | static struct die_info * | |
f2f0e013 | 14935 | die_specification (struct die_info *die, struct dwarf2_cu **spec_cu) |
63d06c5c | 14936 | { |
f2f0e013 DJ |
14937 | struct attribute *spec_attr = dwarf2_attr (die, DW_AT_specification, |
14938 | *spec_cu); | |
63d06c5c | 14939 | |
edb3359d DJ |
14940 | if (spec_attr == NULL) |
14941 | spec_attr = dwarf2_attr (die, DW_AT_abstract_origin, *spec_cu); | |
14942 | ||
63d06c5c DC |
14943 | if (spec_attr == NULL) |
14944 | return NULL; | |
14945 | else | |
f2f0e013 | 14946 | return follow_die_ref (die, spec_attr, spec_cu); |
63d06c5c | 14947 | } |
c906108c | 14948 | |
debd256d | 14949 | /* Free the line_header structure *LH, and any arrays and strings it |
ae2de4f8 DE |
14950 | refers to. |
14951 | NOTE: This is also used as a "cleanup" function. */ | |
14952 | ||
debd256d JB |
14953 | static void |
14954 | free_line_header (struct line_header *lh) | |
14955 | { | |
14956 | if (lh->standard_opcode_lengths) | |
a8bc7b56 | 14957 | xfree (lh->standard_opcode_lengths); |
debd256d JB |
14958 | |
14959 | /* Remember that all the lh->file_names[i].name pointers are | |
14960 | pointers into debug_line_buffer, and don't need to be freed. */ | |
14961 | if (lh->file_names) | |
a8bc7b56 | 14962 | xfree (lh->file_names); |
debd256d JB |
14963 | |
14964 | /* Similarly for the include directory names. */ | |
14965 | if (lh->include_dirs) | |
a8bc7b56 | 14966 | xfree (lh->include_dirs); |
debd256d | 14967 | |
a8bc7b56 | 14968 | xfree (lh); |
debd256d JB |
14969 | } |
14970 | ||
debd256d | 14971 | /* Add an entry to LH's include directory table. */ |
ae2de4f8 | 14972 | |
debd256d JB |
14973 | static void |
14974 | add_include_dir (struct line_header *lh, char *include_dir) | |
c906108c | 14975 | { |
debd256d JB |
14976 | /* Grow the array if necessary. */ |
14977 | if (lh->include_dirs_size == 0) | |
c5aa993b | 14978 | { |
debd256d JB |
14979 | lh->include_dirs_size = 1; /* for testing */ |
14980 | lh->include_dirs = xmalloc (lh->include_dirs_size | |
14981 | * sizeof (*lh->include_dirs)); | |
14982 | } | |
14983 | else if (lh->num_include_dirs >= lh->include_dirs_size) | |
14984 | { | |
14985 | lh->include_dirs_size *= 2; | |
14986 | lh->include_dirs = xrealloc (lh->include_dirs, | |
14987 | (lh->include_dirs_size | |
14988 | * sizeof (*lh->include_dirs))); | |
c5aa993b | 14989 | } |
c906108c | 14990 | |
debd256d JB |
14991 | lh->include_dirs[lh->num_include_dirs++] = include_dir; |
14992 | } | |
6e70227d | 14993 | |
debd256d | 14994 | /* Add an entry to LH's file name table. */ |
ae2de4f8 | 14995 | |
debd256d JB |
14996 | static void |
14997 | add_file_name (struct line_header *lh, | |
14998 | char *name, | |
14999 | unsigned int dir_index, | |
15000 | unsigned int mod_time, | |
15001 | unsigned int length) | |
15002 | { | |
15003 | struct file_entry *fe; | |
15004 | ||
15005 | /* Grow the array if necessary. */ | |
15006 | if (lh->file_names_size == 0) | |
15007 | { | |
15008 | lh->file_names_size = 1; /* for testing */ | |
15009 | lh->file_names = xmalloc (lh->file_names_size | |
15010 | * sizeof (*lh->file_names)); | |
15011 | } | |
15012 | else if (lh->num_file_names >= lh->file_names_size) | |
15013 | { | |
15014 | lh->file_names_size *= 2; | |
15015 | lh->file_names = xrealloc (lh->file_names, | |
15016 | (lh->file_names_size | |
15017 | * sizeof (*lh->file_names))); | |
15018 | } | |
15019 | ||
15020 | fe = &lh->file_names[lh->num_file_names++]; | |
15021 | fe->name = name; | |
15022 | fe->dir_index = dir_index; | |
15023 | fe->mod_time = mod_time; | |
15024 | fe->length = length; | |
aaa75496 | 15025 | fe->included_p = 0; |
cb1df416 | 15026 | fe->symtab = NULL; |
debd256d | 15027 | } |
6e70227d | 15028 | |
36586728 TT |
15029 | /* A convenience function to find the proper .debug_line section for a |
15030 | CU. */ | |
15031 | ||
15032 | static struct dwarf2_section_info * | |
15033 | get_debug_line_section (struct dwarf2_cu *cu) | |
15034 | { | |
15035 | struct dwarf2_section_info *section; | |
15036 | ||
15037 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
15038 | DWO file. */ | |
15039 | if (cu->dwo_unit && cu->per_cu->is_debug_types) | |
15040 | section = &cu->dwo_unit->dwo_file->sections.line; | |
15041 | else if (cu->per_cu->is_dwz) | |
15042 | { | |
15043 | struct dwz_file *dwz = dwarf2_get_dwz_file (); | |
15044 | ||
15045 | section = &dwz->line; | |
15046 | } | |
15047 | else | |
15048 | section = &dwarf2_per_objfile->line; | |
15049 | ||
15050 | return section; | |
15051 | } | |
15052 | ||
debd256d | 15053 | /* Read the statement program header starting at OFFSET in |
3019eac3 | 15054 | .debug_line, or .debug_line.dwo. Return a pointer |
6502dd73 | 15055 | to a struct line_header, allocated using xmalloc. |
debd256d JB |
15056 | |
15057 | NOTE: the strings in the include directory and file name tables of | |
3019eac3 DE |
15058 | the returned object point into the dwarf line section buffer, |
15059 | and must not be freed. */ | |
ae2de4f8 | 15060 | |
debd256d | 15061 | static struct line_header * |
3019eac3 | 15062 | dwarf_decode_line_header (unsigned int offset, struct dwarf2_cu *cu) |
debd256d JB |
15063 | { |
15064 | struct cleanup *back_to; | |
15065 | struct line_header *lh; | |
fe1b8b76 | 15066 | gdb_byte *line_ptr; |
c764a876 | 15067 | unsigned int bytes_read, offset_size; |
debd256d JB |
15068 | int i; |
15069 | char *cur_dir, *cur_file; | |
3019eac3 DE |
15070 | struct dwarf2_section_info *section; |
15071 | bfd *abfd; | |
15072 | ||
36586728 | 15073 | section = get_debug_line_section (cu); |
3019eac3 DE |
15074 | dwarf2_read_section (dwarf2_per_objfile->objfile, section); |
15075 | if (section->buffer == NULL) | |
debd256d | 15076 | { |
3019eac3 DE |
15077 | if (cu->dwo_unit && cu->per_cu->is_debug_types) |
15078 | complaint (&symfile_complaints, _("missing .debug_line.dwo section")); | |
15079 | else | |
15080 | complaint (&symfile_complaints, _("missing .debug_line section")); | |
debd256d JB |
15081 | return 0; |
15082 | } | |
15083 | ||
fceca515 DE |
15084 | /* We can't do this until we know the section is non-empty. |
15085 | Only then do we know we have such a section. */ | |
15086 | abfd = section->asection->owner; | |
15087 | ||
a738430d MK |
15088 | /* Make sure that at least there's room for the total_length field. |
15089 | That could be 12 bytes long, but we're just going to fudge that. */ | |
3019eac3 | 15090 | if (offset + 4 >= section->size) |
debd256d | 15091 | { |
4d3c2250 | 15092 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
15093 | return 0; |
15094 | } | |
15095 | ||
15096 | lh = xmalloc (sizeof (*lh)); | |
15097 | memset (lh, 0, sizeof (*lh)); | |
15098 | back_to = make_cleanup ((make_cleanup_ftype *) free_line_header, | |
15099 | (void *) lh); | |
15100 | ||
3019eac3 | 15101 | line_ptr = section->buffer + offset; |
debd256d | 15102 | |
a738430d | 15103 | /* Read in the header. */ |
6e70227d | 15104 | lh->total_length = |
c764a876 DE |
15105 | read_checked_initial_length_and_offset (abfd, line_ptr, &cu->header, |
15106 | &bytes_read, &offset_size); | |
debd256d | 15107 | line_ptr += bytes_read; |
3019eac3 | 15108 | if (line_ptr + lh->total_length > (section->buffer + section->size)) |
debd256d | 15109 | { |
4d3c2250 | 15110 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
15111 | return 0; |
15112 | } | |
15113 | lh->statement_program_end = line_ptr + lh->total_length; | |
15114 | lh->version = read_2_bytes (abfd, line_ptr); | |
15115 | line_ptr += 2; | |
c764a876 DE |
15116 | lh->header_length = read_offset_1 (abfd, line_ptr, offset_size); |
15117 | line_ptr += offset_size; | |
debd256d JB |
15118 | lh->minimum_instruction_length = read_1_byte (abfd, line_ptr); |
15119 | line_ptr += 1; | |
2dc7f7b3 TT |
15120 | if (lh->version >= 4) |
15121 | { | |
15122 | lh->maximum_ops_per_instruction = read_1_byte (abfd, line_ptr); | |
15123 | line_ptr += 1; | |
15124 | } | |
15125 | else | |
15126 | lh->maximum_ops_per_instruction = 1; | |
15127 | ||
15128 | if (lh->maximum_ops_per_instruction == 0) | |
15129 | { | |
15130 | lh->maximum_ops_per_instruction = 1; | |
15131 | complaint (&symfile_complaints, | |
3e43a32a MS |
15132 | _("invalid maximum_ops_per_instruction " |
15133 | "in `.debug_line' section")); | |
2dc7f7b3 TT |
15134 | } |
15135 | ||
debd256d JB |
15136 | lh->default_is_stmt = read_1_byte (abfd, line_ptr); |
15137 | line_ptr += 1; | |
15138 | lh->line_base = read_1_signed_byte (abfd, line_ptr); | |
15139 | line_ptr += 1; | |
15140 | lh->line_range = read_1_byte (abfd, line_ptr); | |
15141 | line_ptr += 1; | |
15142 | lh->opcode_base = read_1_byte (abfd, line_ptr); | |
15143 | line_ptr += 1; | |
15144 | lh->standard_opcode_lengths | |
fe1b8b76 | 15145 | = xmalloc (lh->opcode_base * sizeof (lh->standard_opcode_lengths[0])); |
debd256d JB |
15146 | |
15147 | lh->standard_opcode_lengths[0] = 1; /* This should never be used anyway. */ | |
15148 | for (i = 1; i < lh->opcode_base; ++i) | |
15149 | { | |
15150 | lh->standard_opcode_lengths[i] = read_1_byte (abfd, line_ptr); | |
15151 | line_ptr += 1; | |
15152 | } | |
15153 | ||
a738430d | 15154 | /* Read directory table. */ |
9b1c24c8 | 15155 | while ((cur_dir = read_direct_string (abfd, line_ptr, &bytes_read)) != NULL) |
debd256d JB |
15156 | { |
15157 | line_ptr += bytes_read; | |
15158 | add_include_dir (lh, cur_dir); | |
15159 | } | |
15160 | line_ptr += bytes_read; | |
15161 | ||
a738430d | 15162 | /* Read file name table. */ |
9b1c24c8 | 15163 | while ((cur_file = read_direct_string (abfd, line_ptr, &bytes_read)) != NULL) |
debd256d JB |
15164 | { |
15165 | unsigned int dir_index, mod_time, length; | |
15166 | ||
15167 | line_ptr += bytes_read; | |
15168 | dir_index = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
15169 | line_ptr += bytes_read; | |
15170 | mod_time = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
15171 | line_ptr += bytes_read; | |
15172 | length = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
15173 | line_ptr += bytes_read; | |
15174 | ||
15175 | add_file_name (lh, cur_file, dir_index, mod_time, length); | |
15176 | } | |
15177 | line_ptr += bytes_read; | |
6e70227d | 15178 | lh->statement_program_start = line_ptr; |
debd256d | 15179 | |
3019eac3 | 15180 | if (line_ptr > (section->buffer + section->size)) |
4d3c2250 | 15181 | complaint (&symfile_complaints, |
3e43a32a MS |
15182 | _("line number info header doesn't " |
15183 | "fit in `.debug_line' section")); | |
debd256d JB |
15184 | |
15185 | discard_cleanups (back_to); | |
15186 | return lh; | |
15187 | } | |
c906108c | 15188 | |
c6da4cef DE |
15189 | /* Subroutine of dwarf_decode_lines to simplify it. |
15190 | Return the file name of the psymtab for included file FILE_INDEX | |
15191 | in line header LH of PST. | |
15192 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
15193 | If space for the result is malloc'd, it will be freed by a cleanup. | |
1ed59174 JK |
15194 | Returns NULL if FILE_INDEX should be ignored, i.e., it is pst->filename. |
15195 | ||
15196 | The function creates dangling cleanup registration. */ | |
c6da4cef DE |
15197 | |
15198 | static char * | |
15199 | psymtab_include_file_name (const struct line_header *lh, int file_index, | |
15200 | const struct partial_symtab *pst, | |
15201 | const char *comp_dir) | |
15202 | { | |
15203 | const struct file_entry fe = lh->file_names [file_index]; | |
15204 | char *include_name = fe.name; | |
15205 | char *include_name_to_compare = include_name; | |
15206 | char *dir_name = NULL; | |
72b9f47f TT |
15207 | const char *pst_filename; |
15208 | char *copied_name = NULL; | |
c6da4cef DE |
15209 | int file_is_pst; |
15210 | ||
15211 | if (fe.dir_index) | |
15212 | dir_name = lh->include_dirs[fe.dir_index - 1]; | |
15213 | ||
15214 | if (!IS_ABSOLUTE_PATH (include_name) | |
15215 | && (dir_name != NULL || comp_dir != NULL)) | |
15216 | { | |
15217 | /* Avoid creating a duplicate psymtab for PST. | |
15218 | We do this by comparing INCLUDE_NAME and PST_FILENAME. | |
15219 | Before we do the comparison, however, we need to account | |
15220 | for DIR_NAME and COMP_DIR. | |
15221 | First prepend dir_name (if non-NULL). If we still don't | |
15222 | have an absolute path prepend comp_dir (if non-NULL). | |
15223 | However, the directory we record in the include-file's | |
15224 | psymtab does not contain COMP_DIR (to match the | |
15225 | corresponding symtab(s)). | |
15226 | ||
15227 | Example: | |
15228 | ||
15229 | bash$ cd /tmp | |
15230 | bash$ gcc -g ./hello.c | |
15231 | include_name = "hello.c" | |
15232 | dir_name = "." | |
15233 | DW_AT_comp_dir = comp_dir = "/tmp" | |
15234 | DW_AT_name = "./hello.c" */ | |
15235 | ||
15236 | if (dir_name != NULL) | |
15237 | { | |
15238 | include_name = concat (dir_name, SLASH_STRING, | |
15239 | include_name, (char *)NULL); | |
15240 | include_name_to_compare = include_name; | |
15241 | make_cleanup (xfree, include_name); | |
15242 | } | |
15243 | if (!IS_ABSOLUTE_PATH (include_name) && comp_dir != NULL) | |
15244 | { | |
15245 | include_name_to_compare = concat (comp_dir, SLASH_STRING, | |
15246 | include_name, (char *)NULL); | |
15247 | } | |
15248 | } | |
15249 | ||
15250 | pst_filename = pst->filename; | |
15251 | if (!IS_ABSOLUTE_PATH (pst_filename) && pst->dirname != NULL) | |
15252 | { | |
72b9f47f TT |
15253 | copied_name = concat (pst->dirname, SLASH_STRING, |
15254 | pst_filename, (char *)NULL); | |
15255 | pst_filename = copied_name; | |
c6da4cef DE |
15256 | } |
15257 | ||
1e3fad37 | 15258 | file_is_pst = FILENAME_CMP (include_name_to_compare, pst_filename) == 0; |
c6da4cef DE |
15259 | |
15260 | if (include_name_to_compare != include_name) | |
15261 | xfree (include_name_to_compare); | |
72b9f47f TT |
15262 | if (copied_name != NULL) |
15263 | xfree (copied_name); | |
c6da4cef DE |
15264 | |
15265 | if (file_is_pst) | |
15266 | return NULL; | |
15267 | return include_name; | |
15268 | } | |
15269 | ||
c91513d8 PP |
15270 | /* Ignore this record_line request. */ |
15271 | ||
15272 | static void | |
15273 | noop_record_line (struct subfile *subfile, int line, CORE_ADDR pc) | |
15274 | { | |
15275 | return; | |
15276 | } | |
15277 | ||
f3f5162e DE |
15278 | /* Subroutine of dwarf_decode_lines to simplify it. |
15279 | Process the line number information in LH. */ | |
debd256d | 15280 | |
c906108c | 15281 | static void |
f3f5162e DE |
15282 | dwarf_decode_lines_1 (struct line_header *lh, const char *comp_dir, |
15283 | struct dwarf2_cu *cu, struct partial_symtab *pst) | |
c906108c | 15284 | { |
a8c50c1f | 15285 | gdb_byte *line_ptr, *extended_end; |
fe1b8b76 | 15286 | gdb_byte *line_end; |
a8c50c1f | 15287 | unsigned int bytes_read, extended_len; |
c906108c | 15288 | unsigned char op_code, extended_op, adj_opcode; |
e142c38c DJ |
15289 | CORE_ADDR baseaddr; |
15290 | struct objfile *objfile = cu->objfile; | |
f3f5162e | 15291 | bfd *abfd = objfile->obfd; |
fbf65064 | 15292 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
aaa75496 | 15293 | const int decode_for_pst_p = (pst != NULL); |
f3f5162e | 15294 | struct subfile *last_subfile = NULL; |
c91513d8 PP |
15295 | void (*p_record_line) (struct subfile *subfile, int line, CORE_ADDR pc) |
15296 | = record_line; | |
e142c38c DJ |
15297 | |
15298 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 15299 | |
debd256d JB |
15300 | line_ptr = lh->statement_program_start; |
15301 | line_end = lh->statement_program_end; | |
c906108c SS |
15302 | |
15303 | /* Read the statement sequences until there's nothing left. */ | |
15304 | while (line_ptr < line_end) | |
15305 | { | |
15306 | /* state machine registers */ | |
15307 | CORE_ADDR address = 0; | |
15308 | unsigned int file = 1; | |
15309 | unsigned int line = 1; | |
15310 | unsigned int column = 0; | |
debd256d | 15311 | int is_stmt = lh->default_is_stmt; |
c906108c SS |
15312 | int basic_block = 0; |
15313 | int end_sequence = 0; | |
fbf65064 | 15314 | CORE_ADDR addr; |
2dc7f7b3 | 15315 | unsigned char op_index = 0; |
c906108c | 15316 | |
aaa75496 | 15317 | if (!decode_for_pst_p && lh->num_file_names >= file) |
c906108c | 15318 | { |
aaa75496 | 15319 | /* Start a subfile for the current file of the state machine. */ |
debd256d JB |
15320 | /* lh->include_dirs and lh->file_names are 0-based, but the |
15321 | directory and file name numbers in the statement program | |
15322 | are 1-based. */ | |
15323 | struct file_entry *fe = &lh->file_names[file - 1]; | |
4f1520fb | 15324 | char *dir = NULL; |
a738430d | 15325 | |
debd256d JB |
15326 | if (fe->dir_index) |
15327 | dir = lh->include_dirs[fe->dir_index - 1]; | |
4f1520fb FR |
15328 | |
15329 | dwarf2_start_subfile (fe->name, dir, comp_dir); | |
c906108c SS |
15330 | } |
15331 | ||
a738430d | 15332 | /* Decode the table. */ |
c5aa993b | 15333 | while (!end_sequence) |
c906108c SS |
15334 | { |
15335 | op_code = read_1_byte (abfd, line_ptr); | |
15336 | line_ptr += 1; | |
59205f5a JB |
15337 | if (line_ptr > line_end) |
15338 | { | |
15339 | dwarf2_debug_line_missing_end_sequence_complaint (); | |
15340 | break; | |
15341 | } | |
9aa1fe7e | 15342 | |
debd256d | 15343 | if (op_code >= lh->opcode_base) |
6e70227d | 15344 | { |
a738430d | 15345 | /* Special operand. */ |
debd256d | 15346 | adj_opcode = op_code - lh->opcode_base; |
2dc7f7b3 TT |
15347 | address += (((op_index + (adj_opcode / lh->line_range)) |
15348 | / lh->maximum_ops_per_instruction) | |
15349 | * lh->minimum_instruction_length); | |
15350 | op_index = ((op_index + (adj_opcode / lh->line_range)) | |
15351 | % lh->maximum_ops_per_instruction); | |
debd256d | 15352 | line += lh->line_base + (adj_opcode % lh->line_range); |
59205f5a | 15353 | if (lh->num_file_names < file || file == 0) |
25e43795 | 15354 | dwarf2_debug_line_missing_file_complaint (); |
2dc7f7b3 TT |
15355 | /* For now we ignore lines not starting on an |
15356 | instruction boundary. */ | |
15357 | else if (op_index == 0) | |
25e43795 DJ |
15358 | { |
15359 | lh->file_names[file - 1].included_p = 1; | |
ca5f395d | 15360 | if (!decode_for_pst_p && is_stmt) |
fbf65064 UW |
15361 | { |
15362 | if (last_subfile != current_subfile) | |
15363 | { | |
15364 | addr = gdbarch_addr_bits_remove (gdbarch, address); | |
15365 | if (last_subfile) | |
c91513d8 | 15366 | (*p_record_line) (last_subfile, 0, addr); |
fbf65064 UW |
15367 | last_subfile = current_subfile; |
15368 | } | |
25e43795 | 15369 | /* Append row to matrix using current values. */ |
7019d805 | 15370 | addr = gdbarch_addr_bits_remove (gdbarch, address); |
c91513d8 | 15371 | (*p_record_line) (current_subfile, line, addr); |
366da635 | 15372 | } |
25e43795 | 15373 | } |
ca5f395d | 15374 | basic_block = 0; |
9aa1fe7e GK |
15375 | } |
15376 | else switch (op_code) | |
c906108c SS |
15377 | { |
15378 | case DW_LNS_extended_op: | |
3e43a32a MS |
15379 | extended_len = read_unsigned_leb128 (abfd, line_ptr, |
15380 | &bytes_read); | |
473b7be6 | 15381 | line_ptr += bytes_read; |
a8c50c1f | 15382 | extended_end = line_ptr + extended_len; |
c906108c SS |
15383 | extended_op = read_1_byte (abfd, line_ptr); |
15384 | line_ptr += 1; | |
15385 | switch (extended_op) | |
15386 | { | |
15387 | case DW_LNE_end_sequence: | |
c91513d8 | 15388 | p_record_line = record_line; |
c906108c | 15389 | end_sequence = 1; |
c906108c SS |
15390 | break; |
15391 | case DW_LNE_set_address: | |
e7c27a73 | 15392 | address = read_address (abfd, line_ptr, cu, &bytes_read); |
c91513d8 PP |
15393 | |
15394 | if (address == 0 && !dwarf2_per_objfile->has_section_at_zero) | |
15395 | { | |
15396 | /* This line table is for a function which has been | |
15397 | GCd by the linker. Ignore it. PR gdb/12528 */ | |
15398 | ||
15399 | long line_offset | |
36586728 | 15400 | = line_ptr - get_debug_line_section (cu)->buffer; |
c91513d8 PP |
15401 | |
15402 | complaint (&symfile_complaints, | |
15403 | _(".debug_line address at offset 0x%lx is 0 " | |
15404 | "[in module %s]"), | |
bb5ed363 | 15405 | line_offset, objfile->name); |
c91513d8 PP |
15406 | p_record_line = noop_record_line; |
15407 | } | |
15408 | ||
2dc7f7b3 | 15409 | op_index = 0; |
107d2387 AC |
15410 | line_ptr += bytes_read; |
15411 | address += baseaddr; | |
c906108c SS |
15412 | break; |
15413 | case DW_LNE_define_file: | |
debd256d JB |
15414 | { |
15415 | char *cur_file; | |
15416 | unsigned int dir_index, mod_time, length; | |
6e70227d | 15417 | |
3e43a32a MS |
15418 | cur_file = read_direct_string (abfd, line_ptr, |
15419 | &bytes_read); | |
debd256d JB |
15420 | line_ptr += bytes_read; |
15421 | dir_index = | |
15422 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
15423 | line_ptr += bytes_read; | |
15424 | mod_time = | |
15425 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
15426 | line_ptr += bytes_read; | |
15427 | length = | |
15428 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
15429 | line_ptr += bytes_read; | |
15430 | add_file_name (lh, cur_file, dir_index, mod_time, length); | |
15431 | } | |
c906108c | 15432 | break; |
d0c6ba3d CC |
15433 | case DW_LNE_set_discriminator: |
15434 | /* The discriminator is not interesting to the debugger; | |
15435 | just ignore it. */ | |
15436 | line_ptr = extended_end; | |
15437 | break; | |
c906108c | 15438 | default: |
4d3c2250 | 15439 | complaint (&symfile_complaints, |
e2e0b3e5 | 15440 | _("mangled .debug_line section")); |
debd256d | 15441 | return; |
c906108c | 15442 | } |
a8c50c1f DJ |
15443 | /* Make sure that we parsed the extended op correctly. If e.g. |
15444 | we expected a different address size than the producer used, | |
15445 | we may have read the wrong number of bytes. */ | |
15446 | if (line_ptr != extended_end) | |
15447 | { | |
15448 | complaint (&symfile_complaints, | |
15449 | _("mangled .debug_line section")); | |
15450 | return; | |
15451 | } | |
c906108c SS |
15452 | break; |
15453 | case DW_LNS_copy: | |
59205f5a | 15454 | if (lh->num_file_names < file || file == 0) |
25e43795 DJ |
15455 | dwarf2_debug_line_missing_file_complaint (); |
15456 | else | |
366da635 | 15457 | { |
25e43795 | 15458 | lh->file_names[file - 1].included_p = 1; |
ca5f395d | 15459 | if (!decode_for_pst_p && is_stmt) |
fbf65064 UW |
15460 | { |
15461 | if (last_subfile != current_subfile) | |
15462 | { | |
15463 | addr = gdbarch_addr_bits_remove (gdbarch, address); | |
15464 | if (last_subfile) | |
c91513d8 | 15465 | (*p_record_line) (last_subfile, 0, addr); |
fbf65064 UW |
15466 | last_subfile = current_subfile; |
15467 | } | |
7019d805 | 15468 | addr = gdbarch_addr_bits_remove (gdbarch, address); |
c91513d8 | 15469 | (*p_record_line) (current_subfile, line, addr); |
fbf65064 | 15470 | } |
366da635 | 15471 | } |
c906108c SS |
15472 | basic_block = 0; |
15473 | break; | |
15474 | case DW_LNS_advance_pc: | |
2dc7f7b3 TT |
15475 | { |
15476 | CORE_ADDR adjust | |
15477 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
15478 | ||
15479 | address += (((op_index + adjust) | |
15480 | / lh->maximum_ops_per_instruction) | |
15481 | * lh->minimum_instruction_length); | |
15482 | op_index = ((op_index + adjust) | |
15483 | % lh->maximum_ops_per_instruction); | |
15484 | line_ptr += bytes_read; | |
15485 | } | |
c906108c SS |
15486 | break; |
15487 | case DW_LNS_advance_line: | |
15488 | line += read_signed_leb128 (abfd, line_ptr, &bytes_read); | |
15489 | line_ptr += bytes_read; | |
15490 | break; | |
15491 | case DW_LNS_set_file: | |
debd256d | 15492 | { |
a738430d MK |
15493 | /* The arrays lh->include_dirs and lh->file_names are |
15494 | 0-based, but the directory and file name numbers in | |
15495 | the statement program are 1-based. */ | |
debd256d | 15496 | struct file_entry *fe; |
4f1520fb | 15497 | char *dir = NULL; |
a738430d | 15498 | |
debd256d JB |
15499 | file = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
15500 | line_ptr += bytes_read; | |
59205f5a | 15501 | if (lh->num_file_names < file || file == 0) |
25e43795 DJ |
15502 | dwarf2_debug_line_missing_file_complaint (); |
15503 | else | |
15504 | { | |
15505 | fe = &lh->file_names[file - 1]; | |
15506 | if (fe->dir_index) | |
15507 | dir = lh->include_dirs[fe->dir_index - 1]; | |
15508 | if (!decode_for_pst_p) | |
15509 | { | |
15510 | last_subfile = current_subfile; | |
15511 | dwarf2_start_subfile (fe->name, dir, comp_dir); | |
15512 | } | |
15513 | } | |
debd256d | 15514 | } |
c906108c SS |
15515 | break; |
15516 | case DW_LNS_set_column: | |
15517 | column = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
15518 | line_ptr += bytes_read; | |
15519 | break; | |
15520 | case DW_LNS_negate_stmt: | |
15521 | is_stmt = (!is_stmt); | |
15522 | break; | |
15523 | case DW_LNS_set_basic_block: | |
15524 | basic_block = 1; | |
15525 | break; | |
c2c6d25f JM |
15526 | /* Add to the address register of the state machine the |
15527 | address increment value corresponding to special opcode | |
a738430d MK |
15528 | 255. I.e., this value is scaled by the minimum |
15529 | instruction length since special opcode 255 would have | |
b021a221 | 15530 | scaled the increment. */ |
c906108c | 15531 | case DW_LNS_const_add_pc: |
2dc7f7b3 TT |
15532 | { |
15533 | CORE_ADDR adjust = (255 - lh->opcode_base) / lh->line_range; | |
15534 | ||
15535 | address += (((op_index + adjust) | |
15536 | / lh->maximum_ops_per_instruction) | |
15537 | * lh->minimum_instruction_length); | |
15538 | op_index = ((op_index + adjust) | |
15539 | % lh->maximum_ops_per_instruction); | |
15540 | } | |
c906108c SS |
15541 | break; |
15542 | case DW_LNS_fixed_advance_pc: | |
15543 | address += read_2_bytes (abfd, line_ptr); | |
2dc7f7b3 | 15544 | op_index = 0; |
c906108c SS |
15545 | line_ptr += 2; |
15546 | break; | |
9aa1fe7e | 15547 | default: |
a738430d MK |
15548 | { |
15549 | /* Unknown standard opcode, ignore it. */ | |
9aa1fe7e | 15550 | int i; |
a738430d | 15551 | |
debd256d | 15552 | for (i = 0; i < lh->standard_opcode_lengths[op_code]; i++) |
9aa1fe7e GK |
15553 | { |
15554 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
15555 | line_ptr += bytes_read; | |
15556 | } | |
15557 | } | |
c906108c SS |
15558 | } |
15559 | } | |
59205f5a JB |
15560 | if (lh->num_file_names < file || file == 0) |
15561 | dwarf2_debug_line_missing_file_complaint (); | |
15562 | else | |
15563 | { | |
15564 | lh->file_names[file - 1].included_p = 1; | |
15565 | if (!decode_for_pst_p) | |
fbf65064 UW |
15566 | { |
15567 | addr = gdbarch_addr_bits_remove (gdbarch, address); | |
c91513d8 | 15568 | (*p_record_line) (current_subfile, 0, addr); |
fbf65064 | 15569 | } |
59205f5a | 15570 | } |
c906108c | 15571 | } |
f3f5162e DE |
15572 | } |
15573 | ||
15574 | /* Decode the Line Number Program (LNP) for the given line_header | |
15575 | structure and CU. The actual information extracted and the type | |
15576 | of structures created from the LNP depends on the value of PST. | |
15577 | ||
15578 | 1. If PST is NULL, then this procedure uses the data from the program | |
15579 | to create all necessary symbol tables, and their linetables. | |
15580 | ||
15581 | 2. If PST is not NULL, this procedure reads the program to determine | |
15582 | the list of files included by the unit represented by PST, and | |
15583 | builds all the associated partial symbol tables. | |
15584 | ||
15585 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
15586 | It is used for relative paths in the line table. | |
15587 | NOTE: When processing partial symtabs (pst != NULL), | |
15588 | comp_dir == pst->dirname. | |
15589 | ||
15590 | NOTE: It is important that psymtabs have the same file name (via strcmp) | |
15591 | as the corresponding symtab. Since COMP_DIR is not used in the name of the | |
15592 | symtab we don't use it in the name of the psymtabs we create. | |
15593 | E.g. expand_line_sal requires this when finding psymtabs to expand. | |
15594 | A good testcase for this is mb-inline.exp. */ | |
15595 | ||
15596 | static void | |
15597 | dwarf_decode_lines (struct line_header *lh, const char *comp_dir, | |
15598 | struct dwarf2_cu *cu, struct partial_symtab *pst, | |
15599 | int want_line_info) | |
15600 | { | |
15601 | struct objfile *objfile = cu->objfile; | |
15602 | const int decode_for_pst_p = (pst != NULL); | |
15603 | struct subfile *first_subfile = current_subfile; | |
15604 | ||
15605 | if (want_line_info) | |
15606 | dwarf_decode_lines_1 (lh, comp_dir, cu, pst); | |
aaa75496 JB |
15607 | |
15608 | if (decode_for_pst_p) | |
15609 | { | |
15610 | int file_index; | |
15611 | ||
15612 | /* Now that we're done scanning the Line Header Program, we can | |
15613 | create the psymtab of each included file. */ | |
15614 | for (file_index = 0; file_index < lh->num_file_names; file_index++) | |
15615 | if (lh->file_names[file_index].included_p == 1) | |
15616 | { | |
c6da4cef DE |
15617 | char *include_name = |
15618 | psymtab_include_file_name (lh, file_index, pst, comp_dir); | |
15619 | if (include_name != NULL) | |
aaa75496 JB |
15620 | dwarf2_create_include_psymtab (include_name, pst, objfile); |
15621 | } | |
15622 | } | |
cb1df416 DJ |
15623 | else |
15624 | { | |
15625 | /* Make sure a symtab is created for every file, even files | |
15626 | which contain only variables (i.e. no code with associated | |
15627 | line numbers). */ | |
cb1df416 | 15628 | int i; |
cb1df416 DJ |
15629 | |
15630 | for (i = 0; i < lh->num_file_names; i++) | |
15631 | { | |
15632 | char *dir = NULL; | |
f3f5162e | 15633 | struct file_entry *fe; |
9a619af0 | 15634 | |
cb1df416 DJ |
15635 | fe = &lh->file_names[i]; |
15636 | if (fe->dir_index) | |
15637 | dir = lh->include_dirs[fe->dir_index - 1]; | |
15638 | dwarf2_start_subfile (fe->name, dir, comp_dir); | |
15639 | ||
15640 | /* Skip the main file; we don't need it, and it must be | |
15641 | allocated last, so that it will show up before the | |
15642 | non-primary symtabs in the objfile's symtab list. */ | |
15643 | if (current_subfile == first_subfile) | |
15644 | continue; | |
15645 | ||
15646 | if (current_subfile->symtab == NULL) | |
15647 | current_subfile->symtab = allocate_symtab (current_subfile->name, | |
bb5ed363 | 15648 | objfile); |
cb1df416 DJ |
15649 | fe->symtab = current_subfile->symtab; |
15650 | } | |
15651 | } | |
c906108c SS |
15652 | } |
15653 | ||
15654 | /* Start a subfile for DWARF. FILENAME is the name of the file and | |
15655 | DIRNAME the name of the source directory which contains FILENAME | |
4f1520fb FR |
15656 | or NULL if not known. COMP_DIR is the compilation directory for the |
15657 | linetable's compilation unit or NULL if not known. | |
c906108c SS |
15658 | This routine tries to keep line numbers from identical absolute and |
15659 | relative file names in a common subfile. | |
15660 | ||
15661 | Using the `list' example from the GDB testsuite, which resides in | |
15662 | /srcdir and compiling it with Irix6.2 cc in /compdir using a filename | |
15663 | of /srcdir/list0.c yields the following debugging information for list0.c: | |
15664 | ||
c5aa993b JM |
15665 | DW_AT_name: /srcdir/list0.c |
15666 | DW_AT_comp_dir: /compdir | |
357e46e7 | 15667 | files.files[0].name: list0.h |
c5aa993b | 15668 | files.files[0].dir: /srcdir |
357e46e7 | 15669 | files.files[1].name: list0.c |
c5aa993b | 15670 | files.files[1].dir: /srcdir |
c906108c SS |
15671 | |
15672 | The line number information for list0.c has to end up in a single | |
4f1520fb FR |
15673 | subfile, so that `break /srcdir/list0.c:1' works as expected. |
15674 | start_subfile will ensure that this happens provided that we pass the | |
15675 | concatenation of files.files[1].dir and files.files[1].name as the | |
15676 | subfile's name. */ | |
c906108c SS |
15677 | |
15678 | static void | |
3e43a32a MS |
15679 | dwarf2_start_subfile (char *filename, const char *dirname, |
15680 | const char *comp_dir) | |
c906108c | 15681 | { |
4f1520fb FR |
15682 | char *fullname; |
15683 | ||
15684 | /* While reading the DIEs, we call start_symtab(DW_AT_name, DW_AT_comp_dir). | |
15685 | `start_symtab' will always pass the contents of DW_AT_comp_dir as | |
15686 | second argument to start_subfile. To be consistent, we do the | |
15687 | same here. In order not to lose the line information directory, | |
15688 | we concatenate it to the filename when it makes sense. | |
15689 | Note that the Dwarf3 standard says (speaking of filenames in line | |
15690 | information): ``The directory index is ignored for file names | |
15691 | that represent full path names''. Thus ignoring dirname in the | |
15692 | `else' branch below isn't an issue. */ | |
c906108c | 15693 | |
d5166ae1 | 15694 | if (!IS_ABSOLUTE_PATH (filename) && dirname != NULL) |
4f1520fb FR |
15695 | fullname = concat (dirname, SLASH_STRING, filename, (char *)NULL); |
15696 | else | |
15697 | fullname = filename; | |
c906108c | 15698 | |
4f1520fb FR |
15699 | start_subfile (fullname, comp_dir); |
15700 | ||
15701 | if (fullname != filename) | |
15702 | xfree (fullname); | |
c906108c SS |
15703 | } |
15704 | ||
f4dc4d17 DE |
15705 | /* Start a symtab for DWARF. |
15706 | NAME, COMP_DIR, LOW_PC are passed to start_symtab. */ | |
15707 | ||
15708 | static void | |
15709 | dwarf2_start_symtab (struct dwarf2_cu *cu, | |
15d034d0 | 15710 | const char *name, const char *comp_dir, CORE_ADDR low_pc) |
f4dc4d17 DE |
15711 | { |
15712 | start_symtab (name, comp_dir, low_pc); | |
15713 | record_debugformat ("DWARF 2"); | |
15714 | record_producer (cu->producer); | |
15715 | ||
15716 | /* We assume that we're processing GCC output. */ | |
15717 | processing_gcc_compilation = 2; | |
15718 | ||
4d4ec4e5 | 15719 | cu->processing_has_namespace_info = 0; |
f4dc4d17 DE |
15720 | } |
15721 | ||
4c2df51b DJ |
15722 | static void |
15723 | var_decode_location (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 15724 | struct dwarf2_cu *cu) |
4c2df51b | 15725 | { |
e7c27a73 DJ |
15726 | struct objfile *objfile = cu->objfile; |
15727 | struct comp_unit_head *cu_header = &cu->header; | |
15728 | ||
4c2df51b DJ |
15729 | /* NOTE drow/2003-01-30: There used to be a comment and some special |
15730 | code here to turn a symbol with DW_AT_external and a | |
15731 | SYMBOL_VALUE_ADDRESS of 0 into a LOC_UNRESOLVED symbol. This was | |
15732 | necessary for platforms (maybe Alpha, certainly PowerPC GNU/Linux | |
15733 | with some versions of binutils) where shared libraries could have | |
15734 | relocations against symbols in their debug information - the | |
15735 | minimal symbol would have the right address, but the debug info | |
15736 | would not. It's no longer necessary, because we will explicitly | |
15737 | apply relocations when we read in the debug information now. */ | |
15738 | ||
15739 | /* A DW_AT_location attribute with no contents indicates that a | |
15740 | variable has been optimized away. */ | |
15741 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size == 0) | |
15742 | { | |
f1e6e072 | 15743 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
4c2df51b DJ |
15744 | return; |
15745 | } | |
15746 | ||
15747 | /* Handle one degenerate form of location expression specially, to | |
15748 | preserve GDB's previous behavior when section offsets are | |
3019eac3 DE |
15749 | specified. If this is just a DW_OP_addr or DW_OP_GNU_addr_index |
15750 | then mark this symbol as LOC_STATIC. */ | |
4c2df51b DJ |
15751 | |
15752 | if (attr_form_is_block (attr) | |
3019eac3 DE |
15753 | && ((DW_BLOCK (attr)->data[0] == DW_OP_addr |
15754 | && DW_BLOCK (attr)->size == 1 + cu_header->addr_size) | |
15755 | || (DW_BLOCK (attr)->data[0] == DW_OP_GNU_addr_index | |
15756 | && (DW_BLOCK (attr)->size | |
15757 | == 1 + leb128_size (&DW_BLOCK (attr)->data[1]))))) | |
4c2df51b | 15758 | { |
891d2f0b | 15759 | unsigned int dummy; |
4c2df51b | 15760 | |
3019eac3 DE |
15761 | if (DW_BLOCK (attr)->data[0] == DW_OP_addr) |
15762 | SYMBOL_VALUE_ADDRESS (sym) = | |
15763 | read_address (objfile->obfd, DW_BLOCK (attr)->data + 1, cu, &dummy); | |
15764 | else | |
15765 | SYMBOL_VALUE_ADDRESS (sym) = | |
15766 | read_addr_index_from_leb128 (cu, DW_BLOCK (attr)->data + 1, &dummy); | |
f1e6e072 | 15767 | SYMBOL_ACLASS_INDEX (sym) = LOC_STATIC; |
4c2df51b DJ |
15768 | fixup_symbol_section (sym, objfile); |
15769 | SYMBOL_VALUE_ADDRESS (sym) += ANOFFSET (objfile->section_offsets, | |
15770 | SYMBOL_SECTION (sym)); | |
4c2df51b DJ |
15771 | return; |
15772 | } | |
15773 | ||
15774 | /* NOTE drow/2002-01-30: It might be worthwhile to have a static | |
15775 | expression evaluator, and use LOC_COMPUTED only when necessary | |
15776 | (i.e. when the value of a register or memory location is | |
15777 | referenced, or a thread-local block, etc.). Then again, it might | |
15778 | not be worthwhile. I'm assuming that it isn't unless performance | |
15779 | or memory numbers show me otherwise. */ | |
15780 | ||
f1e6e072 | 15781 | dwarf2_symbol_mark_computed (attr, sym, cu, 0); |
8be455d7 | 15782 | |
f1e6e072 | 15783 | if (SYMBOL_COMPUTED_OPS (sym)->location_has_loclist) |
8be455d7 | 15784 | cu->has_loclist = 1; |
4c2df51b DJ |
15785 | } |
15786 | ||
c906108c SS |
15787 | /* Given a pointer to a DWARF information entry, figure out if we need |
15788 | to make a symbol table entry for it, and if so, create a new entry | |
15789 | and return a pointer to it. | |
15790 | If TYPE is NULL, determine symbol type from the die, otherwise | |
34eaf542 TT |
15791 | used the passed type. |
15792 | If SPACE is not NULL, use it to hold the new symbol. If it is | |
15793 | NULL, allocate a new symbol on the objfile's obstack. */ | |
c906108c SS |
15794 | |
15795 | static struct symbol * | |
34eaf542 TT |
15796 | new_symbol_full (struct die_info *die, struct type *type, struct dwarf2_cu *cu, |
15797 | struct symbol *space) | |
c906108c | 15798 | { |
e7c27a73 | 15799 | struct objfile *objfile = cu->objfile; |
c906108c | 15800 | struct symbol *sym = NULL; |
15d034d0 | 15801 | const char *name; |
c906108c SS |
15802 | struct attribute *attr = NULL; |
15803 | struct attribute *attr2 = NULL; | |
e142c38c | 15804 | CORE_ADDR baseaddr; |
e37fd15a SW |
15805 | struct pending **list_to_add = NULL; |
15806 | ||
edb3359d | 15807 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
e142c38c DJ |
15808 | |
15809 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 15810 | |
94af9270 | 15811 | name = dwarf2_name (die, cu); |
c906108c SS |
15812 | if (name) |
15813 | { | |
94af9270 | 15814 | const char *linkagename; |
34eaf542 | 15815 | int suppress_add = 0; |
94af9270 | 15816 | |
34eaf542 TT |
15817 | if (space) |
15818 | sym = space; | |
15819 | else | |
15820 | sym = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct symbol); | |
c906108c | 15821 | OBJSTAT (objfile, n_syms++); |
2de7ced7 DJ |
15822 | |
15823 | /* Cache this symbol's name and the name's demangled form (if any). */ | |
33e5013e | 15824 | SYMBOL_SET_LANGUAGE (sym, cu->language); |
94af9270 KS |
15825 | linkagename = dwarf2_physname (name, die, cu); |
15826 | SYMBOL_SET_NAMES (sym, linkagename, strlen (linkagename), 0, objfile); | |
c906108c | 15827 | |
f55ee35c JK |
15828 | /* Fortran does not have mangling standard and the mangling does differ |
15829 | between gfortran, iFort etc. */ | |
15830 | if (cu->language == language_fortran | |
b250c185 | 15831 | && symbol_get_demangled_name (&(sym->ginfo)) == NULL) |
29df156d | 15832 | symbol_set_demangled_name (&(sym->ginfo), |
cfc594ee | 15833 | dwarf2_full_name (name, die, cu), |
29df156d | 15834 | NULL); |
f55ee35c | 15835 | |
c906108c | 15836 | /* Default assumptions. |
c5aa993b | 15837 | Use the passed type or decode it from the die. */ |
176620f1 | 15838 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
f1e6e072 | 15839 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
c906108c SS |
15840 | if (type != NULL) |
15841 | SYMBOL_TYPE (sym) = type; | |
15842 | else | |
e7c27a73 | 15843 | SYMBOL_TYPE (sym) = die_type (die, cu); |
edb3359d DJ |
15844 | attr = dwarf2_attr (die, |
15845 | inlined_func ? DW_AT_call_line : DW_AT_decl_line, | |
15846 | cu); | |
c906108c SS |
15847 | if (attr) |
15848 | { | |
15849 | SYMBOL_LINE (sym) = DW_UNSND (attr); | |
15850 | } | |
cb1df416 | 15851 | |
edb3359d DJ |
15852 | attr = dwarf2_attr (die, |
15853 | inlined_func ? DW_AT_call_file : DW_AT_decl_file, | |
15854 | cu); | |
cb1df416 DJ |
15855 | if (attr) |
15856 | { | |
15857 | int file_index = DW_UNSND (attr); | |
9a619af0 | 15858 | |
cb1df416 DJ |
15859 | if (cu->line_header == NULL |
15860 | || file_index > cu->line_header->num_file_names) | |
15861 | complaint (&symfile_complaints, | |
15862 | _("file index out of range")); | |
1c3d648d | 15863 | else if (file_index > 0) |
cb1df416 DJ |
15864 | { |
15865 | struct file_entry *fe; | |
9a619af0 | 15866 | |
cb1df416 DJ |
15867 | fe = &cu->line_header->file_names[file_index - 1]; |
15868 | SYMBOL_SYMTAB (sym) = fe->symtab; | |
15869 | } | |
15870 | } | |
15871 | ||
c906108c SS |
15872 | switch (die->tag) |
15873 | { | |
15874 | case DW_TAG_label: | |
e142c38c | 15875 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
c906108c SS |
15876 | if (attr) |
15877 | { | |
15878 | SYMBOL_VALUE_ADDRESS (sym) = DW_ADDR (attr) + baseaddr; | |
15879 | } | |
0f5238ed TT |
15880 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_core_addr; |
15881 | SYMBOL_DOMAIN (sym) = LABEL_DOMAIN; | |
f1e6e072 | 15882 | SYMBOL_ACLASS_INDEX (sym) = LOC_LABEL; |
0f5238ed | 15883 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
15884 | break; |
15885 | case DW_TAG_subprogram: | |
15886 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
15887 | finish_block. */ | |
f1e6e072 | 15888 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
e142c38c | 15889 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
2cfa0c8d JB |
15890 | if ((attr2 && (DW_UNSND (attr2) != 0)) |
15891 | || cu->language == language_ada) | |
c906108c | 15892 | { |
2cfa0c8d JB |
15893 | /* Subprograms marked external are stored as a global symbol. |
15894 | Ada subprograms, whether marked external or not, are always | |
15895 | stored as a global symbol, because we want to be able to | |
15896 | access them globally. For instance, we want to be able | |
15897 | to break on a nested subprogram without having to | |
15898 | specify the context. */ | |
e37fd15a | 15899 | list_to_add = &global_symbols; |
c906108c SS |
15900 | } |
15901 | else | |
15902 | { | |
e37fd15a | 15903 | list_to_add = cu->list_in_scope; |
c906108c SS |
15904 | } |
15905 | break; | |
edb3359d DJ |
15906 | case DW_TAG_inlined_subroutine: |
15907 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
15908 | finish_block. */ | |
f1e6e072 | 15909 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
edb3359d | 15910 | SYMBOL_INLINED (sym) = 1; |
481860b3 | 15911 | list_to_add = cu->list_in_scope; |
edb3359d | 15912 | break; |
34eaf542 TT |
15913 | case DW_TAG_template_value_param: |
15914 | suppress_add = 1; | |
15915 | /* Fall through. */ | |
72929c62 | 15916 | case DW_TAG_constant: |
c906108c | 15917 | case DW_TAG_variable: |
254e6b9e | 15918 | case DW_TAG_member: |
0963b4bd MS |
15919 | /* Compilation with minimal debug info may result in |
15920 | variables with missing type entries. Change the | |
15921 | misleading `void' type to something sensible. */ | |
c906108c | 15922 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_VOID) |
64c50499 | 15923 | SYMBOL_TYPE (sym) |
46bf5051 | 15924 | = objfile_type (objfile)->nodebug_data_symbol; |
64c50499 | 15925 | |
e142c38c | 15926 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
254e6b9e DE |
15927 | /* In the case of DW_TAG_member, we should only be called for |
15928 | static const members. */ | |
15929 | if (die->tag == DW_TAG_member) | |
15930 | { | |
3863f96c DE |
15931 | /* dwarf2_add_field uses die_is_declaration, |
15932 | so we do the same. */ | |
254e6b9e DE |
15933 | gdb_assert (die_is_declaration (die, cu)); |
15934 | gdb_assert (attr); | |
15935 | } | |
c906108c SS |
15936 | if (attr) |
15937 | { | |
e7c27a73 | 15938 | dwarf2_const_value (attr, sym, cu); |
e142c38c | 15939 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
e37fd15a | 15940 | if (!suppress_add) |
34eaf542 TT |
15941 | { |
15942 | if (attr2 && (DW_UNSND (attr2) != 0)) | |
e37fd15a | 15943 | list_to_add = &global_symbols; |
34eaf542 | 15944 | else |
e37fd15a | 15945 | list_to_add = cu->list_in_scope; |
34eaf542 | 15946 | } |
c906108c SS |
15947 | break; |
15948 | } | |
e142c38c | 15949 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
15950 | if (attr) |
15951 | { | |
e7c27a73 | 15952 | var_decode_location (attr, sym, cu); |
e142c38c | 15953 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
4357ac6c TT |
15954 | |
15955 | /* Fortran explicitly imports any global symbols to the local | |
15956 | scope by DW_TAG_common_block. */ | |
15957 | if (cu->language == language_fortran && die->parent | |
15958 | && die->parent->tag == DW_TAG_common_block) | |
15959 | attr2 = NULL; | |
15960 | ||
caac4577 JG |
15961 | if (SYMBOL_CLASS (sym) == LOC_STATIC |
15962 | && SYMBOL_VALUE_ADDRESS (sym) == 0 | |
15963 | && !dwarf2_per_objfile->has_section_at_zero) | |
15964 | { | |
15965 | /* When a static variable is eliminated by the linker, | |
15966 | the corresponding debug information is not stripped | |
15967 | out, but the variable address is set to null; | |
15968 | do not add such variables into symbol table. */ | |
15969 | } | |
15970 | else if (attr2 && (DW_UNSND (attr2) != 0)) | |
1c809c68 | 15971 | { |
f55ee35c JK |
15972 | /* Workaround gfortran PR debug/40040 - it uses |
15973 | DW_AT_location for variables in -fPIC libraries which may | |
15974 | get overriden by other libraries/executable and get | |
15975 | a different address. Resolve it by the minimal symbol | |
15976 | which may come from inferior's executable using copy | |
15977 | relocation. Make this workaround only for gfortran as for | |
15978 | other compilers GDB cannot guess the minimal symbol | |
15979 | Fortran mangling kind. */ | |
15980 | if (cu->language == language_fortran && die->parent | |
15981 | && die->parent->tag == DW_TAG_module | |
15982 | && cu->producer | |
15983 | && strncmp (cu->producer, "GNU Fortran ", 12) == 0) | |
f1e6e072 | 15984 | SYMBOL_ACLASS_INDEX (sym) = LOC_UNRESOLVED; |
f55ee35c | 15985 | |
1c809c68 TT |
15986 | /* A variable with DW_AT_external is never static, |
15987 | but it may be block-scoped. */ | |
15988 | list_to_add = (cu->list_in_scope == &file_symbols | |
15989 | ? &global_symbols : cu->list_in_scope); | |
1c809c68 | 15990 | } |
c906108c | 15991 | else |
e37fd15a | 15992 | list_to_add = cu->list_in_scope; |
c906108c SS |
15993 | } |
15994 | else | |
15995 | { | |
15996 | /* We do not know the address of this symbol. | |
c5aa993b JM |
15997 | If it is an external symbol and we have type information |
15998 | for it, enter the symbol as a LOC_UNRESOLVED symbol. | |
15999 | The address of the variable will then be determined from | |
16000 | the minimal symbol table whenever the variable is | |
16001 | referenced. */ | |
e142c38c | 16002 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
0971de02 TT |
16003 | |
16004 | /* Fortran explicitly imports any global symbols to the local | |
16005 | scope by DW_TAG_common_block. */ | |
16006 | if (cu->language == language_fortran && die->parent | |
16007 | && die->parent->tag == DW_TAG_common_block) | |
16008 | { | |
16009 | /* SYMBOL_CLASS doesn't matter here because | |
16010 | read_common_block is going to reset it. */ | |
16011 | if (!suppress_add) | |
16012 | list_to_add = cu->list_in_scope; | |
16013 | } | |
16014 | else if (attr2 && (DW_UNSND (attr2) != 0) | |
16015 | && dwarf2_attr (die, DW_AT_type, cu) != NULL) | |
c906108c | 16016 | { |
0fe7935b DJ |
16017 | /* A variable with DW_AT_external is never static, but it |
16018 | may be block-scoped. */ | |
16019 | list_to_add = (cu->list_in_scope == &file_symbols | |
16020 | ? &global_symbols : cu->list_in_scope); | |
16021 | ||
f1e6e072 | 16022 | SYMBOL_ACLASS_INDEX (sym) = LOC_UNRESOLVED; |
c906108c | 16023 | } |
442ddf59 JK |
16024 | else if (!die_is_declaration (die, cu)) |
16025 | { | |
16026 | /* Use the default LOC_OPTIMIZED_OUT class. */ | |
16027 | gdb_assert (SYMBOL_CLASS (sym) == LOC_OPTIMIZED_OUT); | |
e37fd15a SW |
16028 | if (!suppress_add) |
16029 | list_to_add = cu->list_in_scope; | |
442ddf59 | 16030 | } |
c906108c SS |
16031 | } |
16032 | break; | |
16033 | case DW_TAG_formal_parameter: | |
edb3359d DJ |
16034 | /* If we are inside a function, mark this as an argument. If |
16035 | not, we might be looking at an argument to an inlined function | |
16036 | when we do not have enough information to show inlined frames; | |
16037 | pretend it's a local variable in that case so that the user can | |
16038 | still see it. */ | |
16039 | if (context_stack_depth > 0 | |
16040 | && context_stack[context_stack_depth - 1].name != NULL) | |
16041 | SYMBOL_IS_ARGUMENT (sym) = 1; | |
e142c38c | 16042 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
16043 | if (attr) |
16044 | { | |
e7c27a73 | 16045 | var_decode_location (attr, sym, cu); |
c906108c | 16046 | } |
e142c38c | 16047 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
16048 | if (attr) |
16049 | { | |
e7c27a73 | 16050 | dwarf2_const_value (attr, sym, cu); |
c906108c | 16051 | } |
f346a30d | 16052 | |
e37fd15a | 16053 | list_to_add = cu->list_in_scope; |
c906108c SS |
16054 | break; |
16055 | case DW_TAG_unspecified_parameters: | |
16056 | /* From varargs functions; gdb doesn't seem to have any | |
16057 | interest in this information, so just ignore it for now. | |
16058 | (FIXME?) */ | |
16059 | break; | |
34eaf542 TT |
16060 | case DW_TAG_template_type_param: |
16061 | suppress_add = 1; | |
16062 | /* Fall through. */ | |
c906108c | 16063 | case DW_TAG_class_type: |
680b30c7 | 16064 | case DW_TAG_interface_type: |
c906108c SS |
16065 | case DW_TAG_structure_type: |
16066 | case DW_TAG_union_type: | |
72019c9c | 16067 | case DW_TAG_set_type: |
c906108c | 16068 | case DW_TAG_enumeration_type: |
f1e6e072 | 16069 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 16070 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c906108c | 16071 | |
63d06c5c | 16072 | { |
987504bb | 16073 | /* NOTE: carlton/2003-11-10: C++ and Java class symbols shouldn't |
63d06c5c DC |
16074 | really ever be static objects: otherwise, if you try |
16075 | to, say, break of a class's method and you're in a file | |
16076 | which doesn't mention that class, it won't work unless | |
16077 | the check for all static symbols in lookup_symbol_aux | |
16078 | saves you. See the OtherFileClass tests in | |
16079 | gdb.c++/namespace.exp. */ | |
16080 | ||
e37fd15a | 16081 | if (!suppress_add) |
34eaf542 | 16082 | { |
34eaf542 TT |
16083 | list_to_add = (cu->list_in_scope == &file_symbols |
16084 | && (cu->language == language_cplus | |
16085 | || cu->language == language_java) | |
16086 | ? &global_symbols : cu->list_in_scope); | |
63d06c5c | 16087 | |
64382290 TT |
16088 | /* The semantics of C++ state that "struct foo { |
16089 | ... }" also defines a typedef for "foo". A Java | |
16090 | class declaration also defines a typedef for the | |
16091 | class. */ | |
16092 | if (cu->language == language_cplus | |
16093 | || cu->language == language_java | |
16094 | || cu->language == language_ada) | |
16095 | { | |
16096 | /* The symbol's name is already allocated along | |
16097 | with this objfile, so we don't need to | |
16098 | duplicate it for the type. */ | |
16099 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) | |
16100 | TYPE_NAME (SYMBOL_TYPE (sym)) = SYMBOL_SEARCH_NAME (sym); | |
16101 | } | |
63d06c5c DC |
16102 | } |
16103 | } | |
c906108c SS |
16104 | break; |
16105 | case DW_TAG_typedef: | |
f1e6e072 | 16106 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
63d06c5c | 16107 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 16108 | list_to_add = cu->list_in_scope; |
63d06c5c | 16109 | break; |
c906108c | 16110 | case DW_TAG_base_type: |
a02abb62 | 16111 | case DW_TAG_subrange_type: |
f1e6e072 | 16112 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 16113 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 16114 | list_to_add = cu->list_in_scope; |
c906108c SS |
16115 | break; |
16116 | case DW_TAG_enumerator: | |
e142c38c | 16117 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
16118 | if (attr) |
16119 | { | |
e7c27a73 | 16120 | dwarf2_const_value (attr, sym, cu); |
c906108c | 16121 | } |
63d06c5c DC |
16122 | { |
16123 | /* NOTE: carlton/2003-11-10: See comment above in the | |
16124 | DW_TAG_class_type, etc. block. */ | |
16125 | ||
e142c38c | 16126 | list_to_add = (cu->list_in_scope == &file_symbols |
987504bb JJ |
16127 | && (cu->language == language_cplus |
16128 | || cu->language == language_java) | |
e142c38c | 16129 | ? &global_symbols : cu->list_in_scope); |
63d06c5c | 16130 | } |
c906108c | 16131 | break; |
5c4e30ca | 16132 | case DW_TAG_namespace: |
f1e6e072 | 16133 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
e37fd15a | 16134 | list_to_add = &global_symbols; |
5c4e30ca | 16135 | break; |
4357ac6c | 16136 | case DW_TAG_common_block: |
f1e6e072 | 16137 | SYMBOL_ACLASS_INDEX (sym) = LOC_COMMON_BLOCK; |
4357ac6c TT |
16138 | SYMBOL_DOMAIN (sym) = COMMON_BLOCK_DOMAIN; |
16139 | add_symbol_to_list (sym, cu->list_in_scope); | |
16140 | break; | |
c906108c SS |
16141 | default: |
16142 | /* Not a tag we recognize. Hopefully we aren't processing | |
16143 | trash data, but since we must specifically ignore things | |
16144 | we don't recognize, there is nothing else we should do at | |
0963b4bd | 16145 | this point. */ |
e2e0b3e5 | 16146 | complaint (&symfile_complaints, _("unsupported tag: '%s'"), |
4d3c2250 | 16147 | dwarf_tag_name (die->tag)); |
c906108c SS |
16148 | break; |
16149 | } | |
df8a16a1 | 16150 | |
e37fd15a SW |
16151 | if (suppress_add) |
16152 | { | |
16153 | sym->hash_next = objfile->template_symbols; | |
16154 | objfile->template_symbols = sym; | |
16155 | list_to_add = NULL; | |
16156 | } | |
16157 | ||
16158 | if (list_to_add != NULL) | |
16159 | add_symbol_to_list (sym, list_to_add); | |
16160 | ||
df8a16a1 DJ |
16161 | /* For the benefit of old versions of GCC, check for anonymous |
16162 | namespaces based on the demangled name. */ | |
4d4ec4e5 | 16163 | if (!cu->processing_has_namespace_info |
94af9270 | 16164 | && cu->language == language_cplus) |
a10964d1 | 16165 | cp_scan_for_anonymous_namespaces (sym, objfile); |
c906108c SS |
16166 | } |
16167 | return (sym); | |
16168 | } | |
16169 | ||
34eaf542 TT |
16170 | /* A wrapper for new_symbol_full that always allocates a new symbol. */ |
16171 | ||
16172 | static struct symbol * | |
16173 | new_symbol (struct die_info *die, struct type *type, struct dwarf2_cu *cu) | |
16174 | { | |
16175 | return new_symbol_full (die, type, cu, NULL); | |
16176 | } | |
16177 | ||
98bfdba5 PA |
16178 | /* Given an attr with a DW_FORM_dataN value in host byte order, |
16179 | zero-extend it as appropriate for the symbol's type. The DWARF | |
16180 | standard (v4) is not entirely clear about the meaning of using | |
16181 | DW_FORM_dataN for a constant with a signed type, where the type is | |
16182 | wider than the data. The conclusion of a discussion on the DWARF | |
16183 | list was that this is unspecified. We choose to always zero-extend | |
16184 | because that is the interpretation long in use by GCC. */ | |
c906108c | 16185 | |
98bfdba5 PA |
16186 | static gdb_byte * |
16187 | dwarf2_const_value_data (struct attribute *attr, struct type *type, | |
16188 | const char *name, struct obstack *obstack, | |
12df843f | 16189 | struct dwarf2_cu *cu, LONGEST *value, int bits) |
c906108c | 16190 | { |
e7c27a73 | 16191 | struct objfile *objfile = cu->objfile; |
e17a4113 UW |
16192 | enum bfd_endian byte_order = bfd_big_endian (objfile->obfd) ? |
16193 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE; | |
98bfdba5 PA |
16194 | LONGEST l = DW_UNSND (attr); |
16195 | ||
16196 | if (bits < sizeof (*value) * 8) | |
16197 | { | |
16198 | l &= ((LONGEST) 1 << bits) - 1; | |
16199 | *value = l; | |
16200 | } | |
16201 | else if (bits == sizeof (*value) * 8) | |
16202 | *value = l; | |
16203 | else | |
16204 | { | |
16205 | gdb_byte *bytes = obstack_alloc (obstack, bits / 8); | |
16206 | store_unsigned_integer (bytes, bits / 8, byte_order, l); | |
16207 | return bytes; | |
16208 | } | |
16209 | ||
16210 | return NULL; | |
16211 | } | |
16212 | ||
16213 | /* Read a constant value from an attribute. Either set *VALUE, or if | |
16214 | the value does not fit in *VALUE, set *BYTES - either already | |
16215 | allocated on the objfile obstack, or newly allocated on OBSTACK, | |
16216 | or, set *BATON, if we translated the constant to a location | |
16217 | expression. */ | |
16218 | ||
16219 | static void | |
16220 | dwarf2_const_value_attr (struct attribute *attr, struct type *type, | |
16221 | const char *name, struct obstack *obstack, | |
16222 | struct dwarf2_cu *cu, | |
12df843f | 16223 | LONGEST *value, gdb_byte **bytes, |
98bfdba5 PA |
16224 | struct dwarf2_locexpr_baton **baton) |
16225 | { | |
16226 | struct objfile *objfile = cu->objfile; | |
16227 | struct comp_unit_head *cu_header = &cu->header; | |
c906108c | 16228 | struct dwarf_block *blk; |
98bfdba5 PA |
16229 | enum bfd_endian byte_order = (bfd_big_endian (objfile->obfd) ? |
16230 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); | |
16231 | ||
16232 | *value = 0; | |
16233 | *bytes = NULL; | |
16234 | *baton = NULL; | |
c906108c SS |
16235 | |
16236 | switch (attr->form) | |
16237 | { | |
16238 | case DW_FORM_addr: | |
3019eac3 | 16239 | case DW_FORM_GNU_addr_index: |
ac56253d | 16240 | { |
ac56253d TT |
16241 | gdb_byte *data; |
16242 | ||
98bfdba5 PA |
16243 | if (TYPE_LENGTH (type) != cu_header->addr_size) |
16244 | dwarf2_const_value_length_mismatch_complaint (name, | |
ac56253d | 16245 | cu_header->addr_size, |
98bfdba5 | 16246 | TYPE_LENGTH (type)); |
ac56253d TT |
16247 | /* Symbols of this form are reasonably rare, so we just |
16248 | piggyback on the existing location code rather than writing | |
16249 | a new implementation of symbol_computed_ops. */ | |
98bfdba5 PA |
16250 | *baton = obstack_alloc (&objfile->objfile_obstack, |
16251 | sizeof (struct dwarf2_locexpr_baton)); | |
16252 | (*baton)->per_cu = cu->per_cu; | |
16253 | gdb_assert ((*baton)->per_cu); | |
ac56253d | 16254 | |
98bfdba5 PA |
16255 | (*baton)->size = 2 + cu_header->addr_size; |
16256 | data = obstack_alloc (&objfile->objfile_obstack, (*baton)->size); | |
16257 | (*baton)->data = data; | |
ac56253d TT |
16258 | |
16259 | data[0] = DW_OP_addr; | |
16260 | store_unsigned_integer (&data[1], cu_header->addr_size, | |
16261 | byte_order, DW_ADDR (attr)); | |
16262 | data[cu_header->addr_size + 1] = DW_OP_stack_value; | |
ac56253d | 16263 | } |
c906108c | 16264 | break; |
4ac36638 | 16265 | case DW_FORM_string: |
93b5768b | 16266 | case DW_FORM_strp: |
3019eac3 | 16267 | case DW_FORM_GNU_str_index: |
36586728 | 16268 | case DW_FORM_GNU_strp_alt: |
98bfdba5 PA |
16269 | /* DW_STRING is already allocated on the objfile obstack, point |
16270 | directly to it. */ | |
16271 | *bytes = (gdb_byte *) DW_STRING (attr); | |
93b5768b | 16272 | break; |
c906108c SS |
16273 | case DW_FORM_block1: |
16274 | case DW_FORM_block2: | |
16275 | case DW_FORM_block4: | |
16276 | case DW_FORM_block: | |
2dc7f7b3 | 16277 | case DW_FORM_exprloc: |
c906108c | 16278 | blk = DW_BLOCK (attr); |
98bfdba5 PA |
16279 | if (TYPE_LENGTH (type) != blk->size) |
16280 | dwarf2_const_value_length_mismatch_complaint (name, blk->size, | |
16281 | TYPE_LENGTH (type)); | |
16282 | *bytes = blk->data; | |
c906108c | 16283 | break; |
2df3850c JM |
16284 | |
16285 | /* The DW_AT_const_value attributes are supposed to carry the | |
16286 | symbol's value "represented as it would be on the target | |
16287 | architecture." By the time we get here, it's already been | |
16288 | converted to host endianness, so we just need to sign- or | |
16289 | zero-extend it as appropriate. */ | |
16290 | case DW_FORM_data1: | |
3e43a32a MS |
16291 | *bytes = dwarf2_const_value_data (attr, type, name, |
16292 | obstack, cu, value, 8); | |
2df3850c | 16293 | break; |
c906108c | 16294 | case DW_FORM_data2: |
3e43a32a MS |
16295 | *bytes = dwarf2_const_value_data (attr, type, name, |
16296 | obstack, cu, value, 16); | |
2df3850c | 16297 | break; |
c906108c | 16298 | case DW_FORM_data4: |
3e43a32a MS |
16299 | *bytes = dwarf2_const_value_data (attr, type, name, |
16300 | obstack, cu, value, 32); | |
2df3850c | 16301 | break; |
c906108c | 16302 | case DW_FORM_data8: |
3e43a32a MS |
16303 | *bytes = dwarf2_const_value_data (attr, type, name, |
16304 | obstack, cu, value, 64); | |
2df3850c JM |
16305 | break; |
16306 | ||
c906108c | 16307 | case DW_FORM_sdata: |
98bfdba5 | 16308 | *value = DW_SND (attr); |
2df3850c JM |
16309 | break; |
16310 | ||
c906108c | 16311 | case DW_FORM_udata: |
98bfdba5 | 16312 | *value = DW_UNSND (attr); |
c906108c | 16313 | break; |
2df3850c | 16314 | |
c906108c | 16315 | default: |
4d3c2250 | 16316 | complaint (&symfile_complaints, |
e2e0b3e5 | 16317 | _("unsupported const value attribute form: '%s'"), |
4d3c2250 | 16318 | dwarf_form_name (attr->form)); |
98bfdba5 | 16319 | *value = 0; |
c906108c SS |
16320 | break; |
16321 | } | |
16322 | } | |
16323 | ||
2df3850c | 16324 | |
98bfdba5 PA |
16325 | /* Copy constant value from an attribute to a symbol. */ |
16326 | ||
2df3850c | 16327 | static void |
98bfdba5 PA |
16328 | dwarf2_const_value (struct attribute *attr, struct symbol *sym, |
16329 | struct dwarf2_cu *cu) | |
2df3850c | 16330 | { |
98bfdba5 PA |
16331 | struct objfile *objfile = cu->objfile; |
16332 | struct comp_unit_head *cu_header = &cu->header; | |
12df843f | 16333 | LONGEST value; |
98bfdba5 PA |
16334 | gdb_byte *bytes; |
16335 | struct dwarf2_locexpr_baton *baton; | |
2df3850c | 16336 | |
98bfdba5 PA |
16337 | dwarf2_const_value_attr (attr, SYMBOL_TYPE (sym), |
16338 | SYMBOL_PRINT_NAME (sym), | |
16339 | &objfile->objfile_obstack, cu, | |
16340 | &value, &bytes, &baton); | |
2df3850c | 16341 | |
98bfdba5 PA |
16342 | if (baton != NULL) |
16343 | { | |
98bfdba5 | 16344 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 16345 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
98bfdba5 PA |
16346 | } |
16347 | else if (bytes != NULL) | |
16348 | { | |
16349 | SYMBOL_VALUE_BYTES (sym) = bytes; | |
f1e6e072 | 16350 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST_BYTES; |
98bfdba5 PA |
16351 | } |
16352 | else | |
16353 | { | |
16354 | SYMBOL_VALUE (sym) = value; | |
f1e6e072 | 16355 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
98bfdba5 | 16356 | } |
2df3850c JM |
16357 | } |
16358 | ||
c906108c SS |
16359 | /* Return the type of the die in question using its DW_AT_type attribute. */ |
16360 | ||
16361 | static struct type * | |
e7c27a73 | 16362 | die_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16363 | { |
c906108c | 16364 | struct attribute *type_attr; |
c906108c | 16365 | |
e142c38c | 16366 | type_attr = dwarf2_attr (die, DW_AT_type, cu); |
c906108c SS |
16367 | if (!type_attr) |
16368 | { | |
16369 | /* A missing DW_AT_type represents a void type. */ | |
46bf5051 | 16370 | return objfile_type (cu->objfile)->builtin_void; |
c906108c | 16371 | } |
348e048f | 16372 | |
673bfd45 | 16373 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
16374 | } |
16375 | ||
b4ba55a1 JB |
16376 | /* True iff CU's producer generates GNAT Ada auxiliary information |
16377 | that allows to find parallel types through that information instead | |
16378 | of having to do expensive parallel lookups by type name. */ | |
16379 | ||
16380 | static int | |
16381 | need_gnat_info (struct dwarf2_cu *cu) | |
16382 | { | |
16383 | /* FIXME: brobecker/2010-10-12: As of now, only the AdaCore version | |
16384 | of GNAT produces this auxiliary information, without any indication | |
16385 | that it is produced. Part of enhancing the FSF version of GNAT | |
16386 | to produce that information will be to put in place an indicator | |
16387 | that we can use in order to determine whether the descriptive type | |
16388 | info is available or not. One suggestion that has been made is | |
16389 | to use a new attribute, attached to the CU die. For now, assume | |
16390 | that the descriptive type info is not available. */ | |
16391 | return 0; | |
16392 | } | |
16393 | ||
b4ba55a1 JB |
16394 | /* Return the auxiliary type of the die in question using its |
16395 | DW_AT_GNAT_descriptive_type attribute. Returns NULL if the | |
16396 | attribute is not present. */ | |
16397 | ||
16398 | static struct type * | |
16399 | die_descriptive_type (struct die_info *die, struct dwarf2_cu *cu) | |
16400 | { | |
b4ba55a1 | 16401 | struct attribute *type_attr; |
b4ba55a1 JB |
16402 | |
16403 | type_attr = dwarf2_attr (die, DW_AT_GNAT_descriptive_type, cu); | |
16404 | if (!type_attr) | |
16405 | return NULL; | |
16406 | ||
673bfd45 | 16407 | return lookup_die_type (die, type_attr, cu); |
b4ba55a1 JB |
16408 | } |
16409 | ||
16410 | /* If DIE has a descriptive_type attribute, then set the TYPE's | |
16411 | descriptive type accordingly. */ | |
16412 | ||
16413 | static void | |
16414 | set_descriptive_type (struct type *type, struct die_info *die, | |
16415 | struct dwarf2_cu *cu) | |
16416 | { | |
16417 | struct type *descriptive_type = die_descriptive_type (die, cu); | |
16418 | ||
16419 | if (descriptive_type) | |
16420 | { | |
16421 | ALLOCATE_GNAT_AUX_TYPE (type); | |
16422 | TYPE_DESCRIPTIVE_TYPE (type) = descriptive_type; | |
16423 | } | |
16424 | } | |
16425 | ||
c906108c SS |
16426 | /* Return the containing type of the die in question using its |
16427 | DW_AT_containing_type attribute. */ | |
16428 | ||
16429 | static struct type * | |
e7c27a73 | 16430 | die_containing_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16431 | { |
c906108c | 16432 | struct attribute *type_attr; |
c906108c | 16433 | |
e142c38c | 16434 | type_attr = dwarf2_attr (die, DW_AT_containing_type, cu); |
33ac96f0 JK |
16435 | if (!type_attr) |
16436 | error (_("Dwarf Error: Problem turning containing type into gdb type " | |
16437 | "[in module %s]"), cu->objfile->name); | |
16438 | ||
673bfd45 | 16439 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
16440 | } |
16441 | ||
673bfd45 DE |
16442 | /* Look up the type of DIE in CU using its type attribute ATTR. |
16443 | If there is no type substitute an error marker. */ | |
16444 | ||
c906108c | 16445 | static struct type * |
673bfd45 DE |
16446 | lookup_die_type (struct die_info *die, struct attribute *attr, |
16447 | struct dwarf2_cu *cu) | |
c906108c | 16448 | { |
bb5ed363 | 16449 | struct objfile *objfile = cu->objfile; |
f792889a DJ |
16450 | struct type *this_type; |
16451 | ||
673bfd45 DE |
16452 | /* First see if we have it cached. */ |
16453 | ||
36586728 TT |
16454 | if (attr->form == DW_FORM_GNU_ref_alt) |
16455 | { | |
16456 | struct dwarf2_per_cu_data *per_cu; | |
16457 | sect_offset offset = dwarf2_get_ref_die_offset (attr); | |
16458 | ||
16459 | per_cu = dwarf2_find_containing_comp_unit (offset, 1, cu->objfile); | |
16460 | this_type = get_die_type_at_offset (offset, per_cu); | |
16461 | } | |
16462 | else if (is_ref_attr (attr)) | |
673bfd45 | 16463 | { |
b64f50a1 | 16464 | sect_offset offset = dwarf2_get_ref_die_offset (attr); |
673bfd45 DE |
16465 | |
16466 | this_type = get_die_type_at_offset (offset, cu->per_cu); | |
16467 | } | |
55f1336d | 16468 | else if (attr->form == DW_FORM_ref_sig8) |
673bfd45 DE |
16469 | { |
16470 | struct signatured_type *sig_type = DW_SIGNATURED_TYPE (attr); | |
673bfd45 DE |
16471 | |
16472 | /* sig_type will be NULL if the signatured type is missing from | |
16473 | the debug info. */ | |
16474 | if (sig_type == NULL) | |
16475 | error (_("Dwarf Error: Cannot find signatured DIE referenced from DIE " | |
16476 | "at 0x%x [in module %s]"), | |
b64f50a1 | 16477 | die->offset.sect_off, objfile->name); |
673bfd45 | 16478 | |
3019eac3 DE |
16479 | gdb_assert (sig_type->per_cu.is_debug_types); |
16480 | /* If we haven't filled in type_offset_in_section yet, then we | |
16481 | haven't read the type in yet. */ | |
16482 | this_type = NULL; | |
16483 | if (sig_type->type_offset_in_section.sect_off != 0) | |
16484 | { | |
16485 | this_type = | |
16486 | get_die_type_at_offset (sig_type->type_offset_in_section, | |
16487 | &sig_type->per_cu); | |
16488 | } | |
673bfd45 DE |
16489 | } |
16490 | else | |
16491 | { | |
16492 | dump_die_for_error (die); | |
16493 | error (_("Dwarf Error: Bad type attribute %s [in module %s]"), | |
bb5ed363 | 16494 | dwarf_attr_name (attr->name), objfile->name); |
673bfd45 DE |
16495 | } |
16496 | ||
16497 | /* If not cached we need to read it in. */ | |
16498 | ||
16499 | if (this_type == NULL) | |
16500 | { | |
16501 | struct die_info *type_die; | |
16502 | struct dwarf2_cu *type_cu = cu; | |
16503 | ||
16504 | type_die = follow_die_ref_or_sig (die, attr, &type_cu); | |
3019eac3 DE |
16505 | /* If we found the type now, it's probably because the type came |
16506 | from an inter-CU reference and the type's CU got expanded before | |
16507 | ours. */ | |
16508 | this_type = get_die_type (type_die, type_cu); | |
16509 | if (this_type == NULL) | |
16510 | this_type = read_type_die_1 (type_die, type_cu); | |
673bfd45 DE |
16511 | } |
16512 | ||
16513 | /* If we still don't have a type use an error marker. */ | |
16514 | ||
16515 | if (this_type == NULL) | |
c906108c | 16516 | { |
b00fdb78 TT |
16517 | char *message, *saved; |
16518 | ||
16519 | /* read_type_die already issued a complaint. */ | |
16520 | message = xstrprintf (_("<unknown type in %s, CU 0x%x, DIE 0x%x>"), | |
bb5ed363 | 16521 | objfile->name, |
b64f50a1 JK |
16522 | cu->header.offset.sect_off, |
16523 | die->offset.sect_off); | |
bb5ed363 | 16524 | saved = obstack_copy0 (&objfile->objfile_obstack, |
b00fdb78 TT |
16525 | message, strlen (message)); |
16526 | xfree (message); | |
16527 | ||
bb5ed363 | 16528 | this_type = init_type (TYPE_CODE_ERROR, 0, 0, saved, objfile); |
c906108c | 16529 | } |
673bfd45 | 16530 | |
f792889a | 16531 | return this_type; |
c906108c SS |
16532 | } |
16533 | ||
673bfd45 DE |
16534 | /* Return the type in DIE, CU. |
16535 | Returns NULL for invalid types. | |
16536 | ||
16537 | This first does a lookup in the appropriate type_hash table, | |
16538 | and only reads the die in if necessary. | |
16539 | ||
16540 | NOTE: This can be called when reading in partial or full symbols. */ | |
16541 | ||
f792889a | 16542 | static struct type * |
e7c27a73 | 16543 | read_type_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16544 | { |
f792889a DJ |
16545 | struct type *this_type; |
16546 | ||
16547 | this_type = get_die_type (die, cu); | |
16548 | if (this_type) | |
16549 | return this_type; | |
16550 | ||
673bfd45 DE |
16551 | return read_type_die_1 (die, cu); |
16552 | } | |
16553 | ||
16554 | /* Read the type in DIE, CU. | |
16555 | Returns NULL for invalid types. */ | |
16556 | ||
16557 | static struct type * | |
16558 | read_type_die_1 (struct die_info *die, struct dwarf2_cu *cu) | |
16559 | { | |
16560 | struct type *this_type = NULL; | |
16561 | ||
c906108c SS |
16562 | switch (die->tag) |
16563 | { | |
16564 | case DW_TAG_class_type: | |
680b30c7 | 16565 | case DW_TAG_interface_type: |
c906108c SS |
16566 | case DW_TAG_structure_type: |
16567 | case DW_TAG_union_type: | |
f792889a | 16568 | this_type = read_structure_type (die, cu); |
c906108c SS |
16569 | break; |
16570 | case DW_TAG_enumeration_type: | |
f792889a | 16571 | this_type = read_enumeration_type (die, cu); |
c906108c SS |
16572 | break; |
16573 | case DW_TAG_subprogram: | |
16574 | case DW_TAG_subroutine_type: | |
edb3359d | 16575 | case DW_TAG_inlined_subroutine: |
f792889a | 16576 | this_type = read_subroutine_type (die, cu); |
c906108c SS |
16577 | break; |
16578 | case DW_TAG_array_type: | |
f792889a | 16579 | this_type = read_array_type (die, cu); |
c906108c | 16580 | break; |
72019c9c | 16581 | case DW_TAG_set_type: |
f792889a | 16582 | this_type = read_set_type (die, cu); |
72019c9c | 16583 | break; |
c906108c | 16584 | case DW_TAG_pointer_type: |
f792889a | 16585 | this_type = read_tag_pointer_type (die, cu); |
c906108c SS |
16586 | break; |
16587 | case DW_TAG_ptr_to_member_type: | |
f792889a | 16588 | this_type = read_tag_ptr_to_member_type (die, cu); |
c906108c SS |
16589 | break; |
16590 | case DW_TAG_reference_type: | |
f792889a | 16591 | this_type = read_tag_reference_type (die, cu); |
c906108c SS |
16592 | break; |
16593 | case DW_TAG_const_type: | |
f792889a | 16594 | this_type = read_tag_const_type (die, cu); |
c906108c SS |
16595 | break; |
16596 | case DW_TAG_volatile_type: | |
f792889a | 16597 | this_type = read_tag_volatile_type (die, cu); |
c906108c | 16598 | break; |
06d66ee9 TT |
16599 | case DW_TAG_restrict_type: |
16600 | this_type = read_tag_restrict_type (die, cu); | |
16601 | break; | |
c906108c | 16602 | case DW_TAG_string_type: |
f792889a | 16603 | this_type = read_tag_string_type (die, cu); |
c906108c SS |
16604 | break; |
16605 | case DW_TAG_typedef: | |
f792889a | 16606 | this_type = read_typedef (die, cu); |
c906108c | 16607 | break; |
a02abb62 | 16608 | case DW_TAG_subrange_type: |
f792889a | 16609 | this_type = read_subrange_type (die, cu); |
a02abb62 | 16610 | break; |
c906108c | 16611 | case DW_TAG_base_type: |
f792889a | 16612 | this_type = read_base_type (die, cu); |
c906108c | 16613 | break; |
81a17f79 | 16614 | case DW_TAG_unspecified_type: |
f792889a | 16615 | this_type = read_unspecified_type (die, cu); |
81a17f79 | 16616 | break; |
0114d602 DJ |
16617 | case DW_TAG_namespace: |
16618 | this_type = read_namespace_type (die, cu); | |
16619 | break; | |
f55ee35c JK |
16620 | case DW_TAG_module: |
16621 | this_type = read_module_type (die, cu); | |
16622 | break; | |
c906108c | 16623 | default: |
3e43a32a MS |
16624 | complaint (&symfile_complaints, |
16625 | _("unexpected tag in read_type_die: '%s'"), | |
4d3c2250 | 16626 | dwarf_tag_name (die->tag)); |
c906108c SS |
16627 | break; |
16628 | } | |
63d06c5c | 16629 | |
f792889a | 16630 | return this_type; |
63d06c5c DC |
16631 | } |
16632 | ||
abc72ce4 DE |
16633 | /* See if we can figure out if the class lives in a namespace. We do |
16634 | this by looking for a member function; its demangled name will | |
16635 | contain namespace info, if there is any. | |
16636 | Return the computed name or NULL. | |
16637 | Space for the result is allocated on the objfile's obstack. | |
16638 | This is the full-die version of guess_partial_die_structure_name. | |
16639 | In this case we know DIE has no useful parent. */ | |
16640 | ||
16641 | static char * | |
16642 | guess_full_die_structure_name (struct die_info *die, struct dwarf2_cu *cu) | |
16643 | { | |
16644 | struct die_info *spec_die; | |
16645 | struct dwarf2_cu *spec_cu; | |
16646 | struct die_info *child; | |
16647 | ||
16648 | spec_cu = cu; | |
16649 | spec_die = die_specification (die, &spec_cu); | |
16650 | if (spec_die != NULL) | |
16651 | { | |
16652 | die = spec_die; | |
16653 | cu = spec_cu; | |
16654 | } | |
16655 | ||
16656 | for (child = die->child; | |
16657 | child != NULL; | |
16658 | child = child->sibling) | |
16659 | { | |
16660 | if (child->tag == DW_TAG_subprogram) | |
16661 | { | |
16662 | struct attribute *attr; | |
16663 | ||
16664 | attr = dwarf2_attr (child, DW_AT_linkage_name, cu); | |
16665 | if (attr == NULL) | |
16666 | attr = dwarf2_attr (child, DW_AT_MIPS_linkage_name, cu); | |
16667 | if (attr != NULL) | |
16668 | { | |
16669 | char *actual_name | |
16670 | = language_class_name_from_physname (cu->language_defn, | |
16671 | DW_STRING (attr)); | |
16672 | char *name = NULL; | |
16673 | ||
16674 | if (actual_name != NULL) | |
16675 | { | |
15d034d0 | 16676 | const char *die_name = dwarf2_name (die, cu); |
abc72ce4 DE |
16677 | |
16678 | if (die_name != NULL | |
16679 | && strcmp (die_name, actual_name) != 0) | |
16680 | { | |
16681 | /* Strip off the class name from the full name. | |
16682 | We want the prefix. */ | |
16683 | int die_name_len = strlen (die_name); | |
16684 | int actual_name_len = strlen (actual_name); | |
16685 | ||
16686 | /* Test for '::' as a sanity check. */ | |
16687 | if (actual_name_len > die_name_len + 2 | |
3e43a32a MS |
16688 | && actual_name[actual_name_len |
16689 | - die_name_len - 1] == ':') | |
abc72ce4 | 16690 | name = |
10f0c4bb TT |
16691 | obstack_copy0 (&cu->objfile->objfile_obstack, |
16692 | actual_name, | |
16693 | actual_name_len - die_name_len - 2); | |
abc72ce4 DE |
16694 | } |
16695 | } | |
16696 | xfree (actual_name); | |
16697 | return name; | |
16698 | } | |
16699 | } | |
16700 | } | |
16701 | ||
16702 | return NULL; | |
16703 | } | |
16704 | ||
96408a79 SA |
16705 | /* GCC might emit a nameless typedef that has a linkage name. Determine the |
16706 | prefix part in such case. See | |
16707 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
16708 | ||
16709 | static char * | |
16710 | anonymous_struct_prefix (struct die_info *die, struct dwarf2_cu *cu) | |
16711 | { | |
16712 | struct attribute *attr; | |
16713 | char *base; | |
16714 | ||
16715 | if (die->tag != DW_TAG_class_type && die->tag != DW_TAG_interface_type | |
16716 | && die->tag != DW_TAG_structure_type && die->tag != DW_TAG_union_type) | |
16717 | return NULL; | |
16718 | ||
16719 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
16720 | if (attr != NULL && DW_STRING (attr) != NULL) | |
16721 | return NULL; | |
16722 | ||
16723 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
16724 | if (attr == NULL) | |
16725 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
16726 | if (attr == NULL || DW_STRING (attr) == NULL) | |
16727 | return NULL; | |
16728 | ||
16729 | /* dwarf2_name had to be already called. */ | |
16730 | gdb_assert (DW_STRING_IS_CANONICAL (attr)); | |
16731 | ||
16732 | /* Strip the base name, keep any leading namespaces/classes. */ | |
16733 | base = strrchr (DW_STRING (attr), ':'); | |
16734 | if (base == NULL || base == DW_STRING (attr) || base[-1] != ':') | |
16735 | return ""; | |
16736 | ||
10f0c4bb TT |
16737 | return obstack_copy0 (&cu->objfile->objfile_obstack, |
16738 | DW_STRING (attr), &base[-1] - DW_STRING (attr)); | |
96408a79 SA |
16739 | } |
16740 | ||
fdde2d81 | 16741 | /* Return the name of the namespace/class that DIE is defined within, |
0114d602 | 16742 | or "" if we can't tell. The caller should not xfree the result. |
fdde2d81 | 16743 | |
0114d602 DJ |
16744 | For example, if we're within the method foo() in the following |
16745 | code: | |
16746 | ||
16747 | namespace N { | |
16748 | class C { | |
16749 | void foo () { | |
16750 | } | |
16751 | }; | |
16752 | } | |
16753 | ||
16754 | then determine_prefix on foo's die will return "N::C". */ | |
fdde2d81 | 16755 | |
0d5cff50 | 16756 | static const char * |
e142c38c | 16757 | determine_prefix (struct die_info *die, struct dwarf2_cu *cu) |
63d06c5c | 16758 | { |
0114d602 DJ |
16759 | struct die_info *parent, *spec_die; |
16760 | struct dwarf2_cu *spec_cu; | |
16761 | struct type *parent_type; | |
96408a79 | 16762 | char *retval; |
63d06c5c | 16763 | |
f55ee35c JK |
16764 | if (cu->language != language_cplus && cu->language != language_java |
16765 | && cu->language != language_fortran) | |
0114d602 DJ |
16766 | return ""; |
16767 | ||
96408a79 SA |
16768 | retval = anonymous_struct_prefix (die, cu); |
16769 | if (retval) | |
16770 | return retval; | |
16771 | ||
0114d602 DJ |
16772 | /* We have to be careful in the presence of DW_AT_specification. |
16773 | For example, with GCC 3.4, given the code | |
16774 | ||
16775 | namespace N { | |
16776 | void foo() { | |
16777 | // Definition of N::foo. | |
16778 | } | |
16779 | } | |
16780 | ||
16781 | then we'll have a tree of DIEs like this: | |
16782 | ||
16783 | 1: DW_TAG_compile_unit | |
16784 | 2: DW_TAG_namespace // N | |
16785 | 3: DW_TAG_subprogram // declaration of N::foo | |
16786 | 4: DW_TAG_subprogram // definition of N::foo | |
16787 | DW_AT_specification // refers to die #3 | |
16788 | ||
16789 | Thus, when processing die #4, we have to pretend that we're in | |
16790 | the context of its DW_AT_specification, namely the contex of die | |
16791 | #3. */ | |
16792 | spec_cu = cu; | |
16793 | spec_die = die_specification (die, &spec_cu); | |
16794 | if (spec_die == NULL) | |
16795 | parent = die->parent; | |
16796 | else | |
63d06c5c | 16797 | { |
0114d602 DJ |
16798 | parent = spec_die->parent; |
16799 | cu = spec_cu; | |
63d06c5c | 16800 | } |
0114d602 DJ |
16801 | |
16802 | if (parent == NULL) | |
16803 | return ""; | |
98bfdba5 PA |
16804 | else if (parent->building_fullname) |
16805 | { | |
16806 | const char *name; | |
16807 | const char *parent_name; | |
16808 | ||
16809 | /* It has been seen on RealView 2.2 built binaries, | |
16810 | DW_TAG_template_type_param types actually _defined_ as | |
16811 | children of the parent class: | |
16812 | ||
16813 | enum E {}; | |
16814 | template class <class Enum> Class{}; | |
16815 | Class<enum E> class_e; | |
16816 | ||
16817 | 1: DW_TAG_class_type (Class) | |
16818 | 2: DW_TAG_enumeration_type (E) | |
16819 | 3: DW_TAG_enumerator (enum1:0) | |
16820 | 3: DW_TAG_enumerator (enum2:1) | |
16821 | ... | |
16822 | 2: DW_TAG_template_type_param | |
16823 | DW_AT_type DW_FORM_ref_udata (E) | |
16824 | ||
16825 | Besides being broken debug info, it can put GDB into an | |
16826 | infinite loop. Consider: | |
16827 | ||
16828 | When we're building the full name for Class<E>, we'll start | |
16829 | at Class, and go look over its template type parameters, | |
16830 | finding E. We'll then try to build the full name of E, and | |
16831 | reach here. We're now trying to build the full name of E, | |
16832 | and look over the parent DIE for containing scope. In the | |
16833 | broken case, if we followed the parent DIE of E, we'd again | |
16834 | find Class, and once again go look at its template type | |
16835 | arguments, etc., etc. Simply don't consider such parent die | |
16836 | as source-level parent of this die (it can't be, the language | |
16837 | doesn't allow it), and break the loop here. */ | |
16838 | name = dwarf2_name (die, cu); | |
16839 | parent_name = dwarf2_name (parent, cu); | |
16840 | complaint (&symfile_complaints, | |
16841 | _("template param type '%s' defined within parent '%s'"), | |
16842 | name ? name : "<unknown>", | |
16843 | parent_name ? parent_name : "<unknown>"); | |
16844 | return ""; | |
16845 | } | |
63d06c5c | 16846 | else |
0114d602 DJ |
16847 | switch (parent->tag) |
16848 | { | |
63d06c5c | 16849 | case DW_TAG_namespace: |
0114d602 | 16850 | parent_type = read_type_die (parent, cu); |
acebe513 UW |
16851 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
16852 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
16853 | Work around this problem here. */ | |
16854 | if (cu->language == language_cplus | |
16855 | && strcmp (TYPE_TAG_NAME (parent_type), "::") == 0) | |
16856 | return ""; | |
0114d602 DJ |
16857 | /* We give a name to even anonymous namespaces. */ |
16858 | return TYPE_TAG_NAME (parent_type); | |
63d06c5c | 16859 | case DW_TAG_class_type: |
680b30c7 | 16860 | case DW_TAG_interface_type: |
63d06c5c | 16861 | case DW_TAG_structure_type: |
0114d602 | 16862 | case DW_TAG_union_type: |
f55ee35c | 16863 | case DW_TAG_module: |
0114d602 DJ |
16864 | parent_type = read_type_die (parent, cu); |
16865 | if (TYPE_TAG_NAME (parent_type) != NULL) | |
16866 | return TYPE_TAG_NAME (parent_type); | |
16867 | else | |
16868 | /* An anonymous structure is only allowed non-static data | |
16869 | members; no typedefs, no member functions, et cetera. | |
16870 | So it does not need a prefix. */ | |
16871 | return ""; | |
abc72ce4 | 16872 | case DW_TAG_compile_unit: |
95554aad | 16873 | case DW_TAG_partial_unit: |
abc72ce4 DE |
16874 | /* gcc-4.5 -gdwarf-4 can drop the enclosing namespace. Cope. */ |
16875 | if (cu->language == language_cplus | |
8b70b953 | 16876 | && !VEC_empty (dwarf2_section_info_def, dwarf2_per_objfile->types) |
abc72ce4 DE |
16877 | && die->child != NULL |
16878 | && (die->tag == DW_TAG_class_type | |
16879 | || die->tag == DW_TAG_structure_type | |
16880 | || die->tag == DW_TAG_union_type)) | |
16881 | { | |
16882 | char *name = guess_full_die_structure_name (die, cu); | |
16883 | if (name != NULL) | |
16884 | return name; | |
16885 | } | |
16886 | return ""; | |
63d06c5c | 16887 | default: |
8176b9b8 | 16888 | return determine_prefix (parent, cu); |
63d06c5c | 16889 | } |
63d06c5c DC |
16890 | } |
16891 | ||
3e43a32a MS |
16892 | /* Return a newly-allocated string formed by concatenating PREFIX and SUFFIX |
16893 | with appropriate separator. If PREFIX or SUFFIX is NULL or empty, then | |
16894 | simply copy the SUFFIX or PREFIX, respectively. If OBS is non-null, perform | |
16895 | an obconcat, otherwise allocate storage for the result. The CU argument is | |
16896 | used to determine the language and hence, the appropriate separator. */ | |
987504bb | 16897 | |
f55ee35c | 16898 | #define MAX_SEP_LEN 7 /* strlen ("__") + strlen ("_MOD_") */ |
63d06c5c DC |
16899 | |
16900 | static char * | |
f55ee35c JK |
16901 | typename_concat (struct obstack *obs, const char *prefix, const char *suffix, |
16902 | int physname, struct dwarf2_cu *cu) | |
63d06c5c | 16903 | { |
f55ee35c | 16904 | const char *lead = ""; |
5c315b68 | 16905 | const char *sep; |
63d06c5c | 16906 | |
3e43a32a MS |
16907 | if (suffix == NULL || suffix[0] == '\0' |
16908 | || prefix == NULL || prefix[0] == '\0') | |
987504bb JJ |
16909 | sep = ""; |
16910 | else if (cu->language == language_java) | |
16911 | sep = "."; | |
f55ee35c JK |
16912 | else if (cu->language == language_fortran && physname) |
16913 | { | |
16914 | /* This is gfortran specific mangling. Normally DW_AT_linkage_name or | |
16915 | DW_AT_MIPS_linkage_name is preferred and used instead. */ | |
16916 | ||
16917 | lead = "__"; | |
16918 | sep = "_MOD_"; | |
16919 | } | |
987504bb JJ |
16920 | else |
16921 | sep = "::"; | |
63d06c5c | 16922 | |
6dd47d34 DE |
16923 | if (prefix == NULL) |
16924 | prefix = ""; | |
16925 | if (suffix == NULL) | |
16926 | suffix = ""; | |
16927 | ||
987504bb JJ |
16928 | if (obs == NULL) |
16929 | { | |
3e43a32a MS |
16930 | char *retval |
16931 | = xmalloc (strlen (prefix) + MAX_SEP_LEN + strlen (suffix) + 1); | |
9a619af0 | 16932 | |
f55ee35c JK |
16933 | strcpy (retval, lead); |
16934 | strcat (retval, prefix); | |
6dd47d34 DE |
16935 | strcat (retval, sep); |
16936 | strcat (retval, suffix); | |
63d06c5c DC |
16937 | return retval; |
16938 | } | |
987504bb JJ |
16939 | else |
16940 | { | |
16941 | /* We have an obstack. */ | |
f55ee35c | 16942 | return obconcat (obs, lead, prefix, sep, suffix, (char *) NULL); |
987504bb | 16943 | } |
63d06c5c DC |
16944 | } |
16945 | ||
c906108c SS |
16946 | /* Return sibling of die, NULL if no sibling. */ |
16947 | ||
f9aca02d | 16948 | static struct die_info * |
fba45db2 | 16949 | sibling_die (struct die_info *die) |
c906108c | 16950 | { |
639d11d3 | 16951 | return die->sibling; |
c906108c SS |
16952 | } |
16953 | ||
71c25dea TT |
16954 | /* Get name of a die, return NULL if not found. */ |
16955 | ||
15d034d0 TT |
16956 | static const char * |
16957 | dwarf2_canonicalize_name (const char *name, struct dwarf2_cu *cu, | |
71c25dea TT |
16958 | struct obstack *obstack) |
16959 | { | |
16960 | if (name && cu->language == language_cplus) | |
16961 | { | |
16962 | char *canon_name = cp_canonicalize_string (name); | |
16963 | ||
16964 | if (canon_name != NULL) | |
16965 | { | |
16966 | if (strcmp (canon_name, name) != 0) | |
10f0c4bb | 16967 | name = obstack_copy0 (obstack, canon_name, strlen (canon_name)); |
71c25dea TT |
16968 | xfree (canon_name); |
16969 | } | |
16970 | } | |
16971 | ||
16972 | return name; | |
c906108c SS |
16973 | } |
16974 | ||
9219021c DC |
16975 | /* Get name of a die, return NULL if not found. */ |
16976 | ||
15d034d0 | 16977 | static const char * |
e142c38c | 16978 | dwarf2_name (struct die_info *die, struct dwarf2_cu *cu) |
9219021c DC |
16979 | { |
16980 | struct attribute *attr; | |
16981 | ||
e142c38c | 16982 | attr = dwarf2_attr (die, DW_AT_name, cu); |
53832f31 TT |
16983 | if ((!attr || !DW_STRING (attr)) |
16984 | && die->tag != DW_TAG_class_type | |
16985 | && die->tag != DW_TAG_interface_type | |
16986 | && die->tag != DW_TAG_structure_type | |
16987 | && die->tag != DW_TAG_union_type) | |
71c25dea TT |
16988 | return NULL; |
16989 | ||
16990 | switch (die->tag) | |
16991 | { | |
16992 | case DW_TAG_compile_unit: | |
95554aad | 16993 | case DW_TAG_partial_unit: |
71c25dea TT |
16994 | /* Compilation units have a DW_AT_name that is a filename, not |
16995 | a source language identifier. */ | |
16996 | case DW_TAG_enumeration_type: | |
16997 | case DW_TAG_enumerator: | |
16998 | /* These tags always have simple identifiers already; no need | |
16999 | to canonicalize them. */ | |
17000 | return DW_STRING (attr); | |
907af001 | 17001 | |
418835cc KS |
17002 | case DW_TAG_subprogram: |
17003 | /* Java constructors will all be named "<init>", so return | |
17004 | the class name when we see this special case. */ | |
17005 | if (cu->language == language_java | |
17006 | && DW_STRING (attr) != NULL | |
17007 | && strcmp (DW_STRING (attr), "<init>") == 0) | |
17008 | { | |
17009 | struct dwarf2_cu *spec_cu = cu; | |
17010 | struct die_info *spec_die; | |
17011 | ||
17012 | /* GCJ will output '<init>' for Java constructor names. | |
17013 | For this special case, return the name of the parent class. */ | |
17014 | ||
17015 | /* GCJ may output suprogram DIEs with AT_specification set. | |
17016 | If so, use the name of the specified DIE. */ | |
17017 | spec_die = die_specification (die, &spec_cu); | |
17018 | if (spec_die != NULL) | |
17019 | return dwarf2_name (spec_die, spec_cu); | |
17020 | ||
17021 | do | |
17022 | { | |
17023 | die = die->parent; | |
17024 | if (die->tag == DW_TAG_class_type) | |
17025 | return dwarf2_name (die, cu); | |
17026 | } | |
95554aad TT |
17027 | while (die->tag != DW_TAG_compile_unit |
17028 | && die->tag != DW_TAG_partial_unit); | |
418835cc | 17029 | } |
907af001 UW |
17030 | break; |
17031 | ||
17032 | case DW_TAG_class_type: | |
17033 | case DW_TAG_interface_type: | |
17034 | case DW_TAG_structure_type: | |
17035 | case DW_TAG_union_type: | |
17036 | /* Some GCC versions emit spurious DW_AT_name attributes for unnamed | |
17037 | structures or unions. These were of the form "._%d" in GCC 4.1, | |
17038 | or simply "<anonymous struct>" or "<anonymous union>" in GCC 4.3 | |
17039 | and GCC 4.4. We work around this problem by ignoring these. */ | |
53832f31 TT |
17040 | if (attr && DW_STRING (attr) |
17041 | && (strncmp (DW_STRING (attr), "._", 2) == 0 | |
17042 | || strncmp (DW_STRING (attr), "<anonymous", 10) == 0)) | |
907af001 | 17043 | return NULL; |
53832f31 TT |
17044 | |
17045 | /* GCC might emit a nameless typedef that has a linkage name. See | |
17046 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
17047 | if (!attr || DW_STRING (attr) == NULL) | |
17048 | { | |
df5c6c50 | 17049 | char *demangled = NULL; |
53832f31 TT |
17050 | |
17051 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
17052 | if (attr == NULL) | |
17053 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
17054 | ||
17055 | if (attr == NULL || DW_STRING (attr) == NULL) | |
17056 | return NULL; | |
17057 | ||
df5c6c50 JK |
17058 | /* Avoid demangling DW_STRING (attr) the second time on a second |
17059 | call for the same DIE. */ | |
17060 | if (!DW_STRING_IS_CANONICAL (attr)) | |
17061 | demangled = cplus_demangle (DW_STRING (attr), DMGL_TYPES); | |
53832f31 TT |
17062 | |
17063 | if (demangled) | |
17064 | { | |
96408a79 SA |
17065 | char *base; |
17066 | ||
53832f31 | 17067 | /* FIXME: we already did this for the partial symbol... */ |
10f0c4bb TT |
17068 | DW_STRING (attr) = obstack_copy0 (&cu->objfile->objfile_obstack, |
17069 | demangled, strlen (demangled)); | |
53832f31 TT |
17070 | DW_STRING_IS_CANONICAL (attr) = 1; |
17071 | xfree (demangled); | |
96408a79 SA |
17072 | |
17073 | /* Strip any leading namespaces/classes, keep only the base name. | |
17074 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
17075 | base = strrchr (DW_STRING (attr), ':'); | |
17076 | if (base && base > DW_STRING (attr) && base[-1] == ':') | |
17077 | return &base[1]; | |
17078 | else | |
17079 | return DW_STRING (attr); | |
53832f31 TT |
17080 | } |
17081 | } | |
907af001 UW |
17082 | break; |
17083 | ||
71c25dea | 17084 | default: |
907af001 UW |
17085 | break; |
17086 | } | |
17087 | ||
17088 | if (!DW_STRING_IS_CANONICAL (attr)) | |
17089 | { | |
17090 | DW_STRING (attr) | |
17091 | = dwarf2_canonicalize_name (DW_STRING (attr), cu, | |
17092 | &cu->objfile->objfile_obstack); | |
17093 | DW_STRING_IS_CANONICAL (attr) = 1; | |
71c25dea | 17094 | } |
907af001 | 17095 | return DW_STRING (attr); |
9219021c DC |
17096 | } |
17097 | ||
17098 | /* Return the die that this die in an extension of, or NULL if there | |
f2f0e013 DJ |
17099 | is none. *EXT_CU is the CU containing DIE on input, and the CU |
17100 | containing the return value on output. */ | |
9219021c DC |
17101 | |
17102 | static struct die_info * | |
f2f0e013 | 17103 | dwarf2_extension (struct die_info *die, struct dwarf2_cu **ext_cu) |
9219021c DC |
17104 | { |
17105 | struct attribute *attr; | |
9219021c | 17106 | |
f2f0e013 | 17107 | attr = dwarf2_attr (die, DW_AT_extension, *ext_cu); |
9219021c DC |
17108 | if (attr == NULL) |
17109 | return NULL; | |
17110 | ||
f2f0e013 | 17111 | return follow_die_ref (die, attr, ext_cu); |
9219021c DC |
17112 | } |
17113 | ||
c906108c SS |
17114 | /* Convert a DIE tag into its string name. */ |
17115 | ||
f39c6ffd | 17116 | static const char * |
aa1ee363 | 17117 | dwarf_tag_name (unsigned tag) |
c906108c | 17118 | { |
f39c6ffd TT |
17119 | const char *name = get_DW_TAG_name (tag); |
17120 | ||
17121 | if (name == NULL) | |
17122 | return "DW_TAG_<unknown>"; | |
17123 | ||
17124 | return name; | |
c906108c SS |
17125 | } |
17126 | ||
17127 | /* Convert a DWARF attribute code into its string name. */ | |
17128 | ||
f39c6ffd | 17129 | static const char * |
aa1ee363 | 17130 | dwarf_attr_name (unsigned attr) |
c906108c | 17131 | { |
f39c6ffd TT |
17132 | const char *name; |
17133 | ||
c764a876 | 17134 | #ifdef MIPS /* collides with DW_AT_HP_block_index */ |
f39c6ffd TT |
17135 | if (attr == DW_AT_MIPS_fde) |
17136 | return "DW_AT_MIPS_fde"; | |
17137 | #else | |
17138 | if (attr == DW_AT_HP_block_index) | |
17139 | return "DW_AT_HP_block_index"; | |
c764a876 | 17140 | #endif |
f39c6ffd TT |
17141 | |
17142 | name = get_DW_AT_name (attr); | |
17143 | ||
17144 | if (name == NULL) | |
17145 | return "DW_AT_<unknown>"; | |
17146 | ||
17147 | return name; | |
c906108c SS |
17148 | } |
17149 | ||
17150 | /* Convert a DWARF value form code into its string name. */ | |
17151 | ||
f39c6ffd | 17152 | static const char * |
aa1ee363 | 17153 | dwarf_form_name (unsigned form) |
c906108c | 17154 | { |
f39c6ffd TT |
17155 | const char *name = get_DW_FORM_name (form); |
17156 | ||
17157 | if (name == NULL) | |
17158 | return "DW_FORM_<unknown>"; | |
17159 | ||
17160 | return name; | |
c906108c SS |
17161 | } |
17162 | ||
17163 | static char * | |
fba45db2 | 17164 | dwarf_bool_name (unsigned mybool) |
c906108c SS |
17165 | { |
17166 | if (mybool) | |
17167 | return "TRUE"; | |
17168 | else | |
17169 | return "FALSE"; | |
17170 | } | |
17171 | ||
17172 | /* Convert a DWARF type code into its string name. */ | |
17173 | ||
f39c6ffd | 17174 | static const char * |
aa1ee363 | 17175 | dwarf_type_encoding_name (unsigned enc) |
c906108c | 17176 | { |
f39c6ffd | 17177 | const char *name = get_DW_ATE_name (enc); |
c906108c | 17178 | |
f39c6ffd TT |
17179 | if (name == NULL) |
17180 | return "DW_ATE_<unknown>"; | |
c906108c | 17181 | |
f39c6ffd | 17182 | return name; |
c906108c | 17183 | } |
c906108c | 17184 | |
f9aca02d | 17185 | static void |
d97bc12b | 17186 | dump_die_shallow (struct ui_file *f, int indent, struct die_info *die) |
c906108c SS |
17187 | { |
17188 | unsigned int i; | |
17189 | ||
d97bc12b DE |
17190 | print_spaces (indent, f); |
17191 | fprintf_unfiltered (f, "Die: %s (abbrev %d, offset 0x%x)\n", | |
b64f50a1 | 17192 | dwarf_tag_name (die->tag), die->abbrev, die->offset.sect_off); |
d97bc12b DE |
17193 | |
17194 | if (die->parent != NULL) | |
17195 | { | |
17196 | print_spaces (indent, f); | |
17197 | fprintf_unfiltered (f, " parent at offset: 0x%x\n", | |
b64f50a1 | 17198 | die->parent->offset.sect_off); |
d97bc12b DE |
17199 | } |
17200 | ||
17201 | print_spaces (indent, f); | |
17202 | fprintf_unfiltered (f, " has children: %s\n", | |
639d11d3 | 17203 | dwarf_bool_name (die->child != NULL)); |
c906108c | 17204 | |
d97bc12b DE |
17205 | print_spaces (indent, f); |
17206 | fprintf_unfiltered (f, " attributes:\n"); | |
17207 | ||
c906108c SS |
17208 | for (i = 0; i < die->num_attrs; ++i) |
17209 | { | |
d97bc12b DE |
17210 | print_spaces (indent, f); |
17211 | fprintf_unfiltered (f, " %s (%s) ", | |
c906108c SS |
17212 | dwarf_attr_name (die->attrs[i].name), |
17213 | dwarf_form_name (die->attrs[i].form)); | |
d97bc12b | 17214 | |
c906108c SS |
17215 | switch (die->attrs[i].form) |
17216 | { | |
c906108c | 17217 | case DW_FORM_addr: |
3019eac3 | 17218 | case DW_FORM_GNU_addr_index: |
d97bc12b | 17219 | fprintf_unfiltered (f, "address: "); |
5af949e3 | 17220 | fputs_filtered (hex_string (DW_ADDR (&die->attrs[i])), f); |
c906108c SS |
17221 | break; |
17222 | case DW_FORM_block2: | |
17223 | case DW_FORM_block4: | |
17224 | case DW_FORM_block: | |
17225 | case DW_FORM_block1: | |
56eb65bd SP |
17226 | fprintf_unfiltered (f, "block: size %s", |
17227 | pulongest (DW_BLOCK (&die->attrs[i])->size)); | |
c906108c | 17228 | break; |
2dc7f7b3 | 17229 | case DW_FORM_exprloc: |
56eb65bd SP |
17230 | fprintf_unfiltered (f, "expression: size %s", |
17231 | pulongest (DW_BLOCK (&die->attrs[i])->size)); | |
2dc7f7b3 | 17232 | break; |
4568ecf9 DE |
17233 | case DW_FORM_ref_addr: |
17234 | fprintf_unfiltered (f, "ref address: "); | |
17235 | fputs_filtered (hex_string (DW_UNSND (&die->attrs[i])), f); | |
17236 | break; | |
36586728 TT |
17237 | case DW_FORM_GNU_ref_alt: |
17238 | fprintf_unfiltered (f, "alt ref address: "); | |
17239 | fputs_filtered (hex_string (DW_UNSND (&die->attrs[i])), f); | |
17240 | break; | |
10b3939b DJ |
17241 | case DW_FORM_ref1: |
17242 | case DW_FORM_ref2: | |
17243 | case DW_FORM_ref4: | |
4568ecf9 DE |
17244 | case DW_FORM_ref8: |
17245 | case DW_FORM_ref_udata: | |
d97bc12b | 17246 | fprintf_unfiltered (f, "constant ref: 0x%lx (adjusted)", |
4568ecf9 | 17247 | (long) (DW_UNSND (&die->attrs[i]))); |
10b3939b | 17248 | break; |
c906108c SS |
17249 | case DW_FORM_data1: |
17250 | case DW_FORM_data2: | |
17251 | case DW_FORM_data4: | |
ce5d95e1 | 17252 | case DW_FORM_data8: |
c906108c SS |
17253 | case DW_FORM_udata: |
17254 | case DW_FORM_sdata: | |
43bbcdc2 PH |
17255 | fprintf_unfiltered (f, "constant: %s", |
17256 | pulongest (DW_UNSND (&die->attrs[i]))); | |
c906108c | 17257 | break; |
2dc7f7b3 TT |
17258 | case DW_FORM_sec_offset: |
17259 | fprintf_unfiltered (f, "section offset: %s", | |
17260 | pulongest (DW_UNSND (&die->attrs[i]))); | |
17261 | break; | |
55f1336d | 17262 | case DW_FORM_ref_sig8: |
348e048f | 17263 | if (DW_SIGNATURED_TYPE (&die->attrs[i]) != NULL) |
e4a48d9d DE |
17264 | { |
17265 | struct signatured_type *sig_type = | |
17266 | DW_SIGNATURED_TYPE (&die->attrs[i]); | |
17267 | ||
17268 | fprintf_unfiltered (f, "signatured type: 0x%s, offset 0x%x", | |
17269 | hex_string (sig_type->signature), | |
17270 | sig_type->per_cu.offset.sect_off); | |
17271 | } | |
348e048f | 17272 | else |
e4a48d9d | 17273 | fprintf_unfiltered (f, "signatured type, unknown"); |
348e048f | 17274 | break; |
c906108c | 17275 | case DW_FORM_string: |
4bdf3d34 | 17276 | case DW_FORM_strp: |
3019eac3 | 17277 | case DW_FORM_GNU_str_index: |
36586728 | 17278 | case DW_FORM_GNU_strp_alt: |
8285870a | 17279 | fprintf_unfiltered (f, "string: \"%s\" (%s canonicalized)", |
c906108c | 17280 | DW_STRING (&die->attrs[i]) |
8285870a JK |
17281 | ? DW_STRING (&die->attrs[i]) : "", |
17282 | DW_STRING_IS_CANONICAL (&die->attrs[i]) ? "is" : "not"); | |
c906108c SS |
17283 | break; |
17284 | case DW_FORM_flag: | |
17285 | if (DW_UNSND (&die->attrs[i])) | |
d97bc12b | 17286 | fprintf_unfiltered (f, "flag: TRUE"); |
c906108c | 17287 | else |
d97bc12b | 17288 | fprintf_unfiltered (f, "flag: FALSE"); |
c906108c | 17289 | break; |
2dc7f7b3 TT |
17290 | case DW_FORM_flag_present: |
17291 | fprintf_unfiltered (f, "flag: TRUE"); | |
17292 | break; | |
a8329558 | 17293 | case DW_FORM_indirect: |
0963b4bd MS |
17294 | /* The reader will have reduced the indirect form to |
17295 | the "base form" so this form should not occur. */ | |
3e43a32a MS |
17296 | fprintf_unfiltered (f, |
17297 | "unexpected attribute form: DW_FORM_indirect"); | |
a8329558 | 17298 | break; |
c906108c | 17299 | default: |
d97bc12b | 17300 | fprintf_unfiltered (f, "unsupported attribute form: %d.", |
c5aa993b | 17301 | die->attrs[i].form); |
d97bc12b | 17302 | break; |
c906108c | 17303 | } |
d97bc12b | 17304 | fprintf_unfiltered (f, "\n"); |
c906108c SS |
17305 | } |
17306 | } | |
17307 | ||
f9aca02d | 17308 | static void |
d97bc12b | 17309 | dump_die_for_error (struct die_info *die) |
c906108c | 17310 | { |
d97bc12b DE |
17311 | dump_die_shallow (gdb_stderr, 0, die); |
17312 | } | |
17313 | ||
17314 | static void | |
17315 | dump_die_1 (struct ui_file *f, int level, int max_level, struct die_info *die) | |
17316 | { | |
17317 | int indent = level * 4; | |
17318 | ||
17319 | gdb_assert (die != NULL); | |
17320 | ||
17321 | if (level >= max_level) | |
17322 | return; | |
17323 | ||
17324 | dump_die_shallow (f, indent, die); | |
17325 | ||
17326 | if (die->child != NULL) | |
c906108c | 17327 | { |
d97bc12b DE |
17328 | print_spaces (indent, f); |
17329 | fprintf_unfiltered (f, " Children:"); | |
17330 | if (level + 1 < max_level) | |
17331 | { | |
17332 | fprintf_unfiltered (f, "\n"); | |
17333 | dump_die_1 (f, level + 1, max_level, die->child); | |
17334 | } | |
17335 | else | |
17336 | { | |
3e43a32a MS |
17337 | fprintf_unfiltered (f, |
17338 | " [not printed, max nesting level reached]\n"); | |
d97bc12b DE |
17339 | } |
17340 | } | |
17341 | ||
17342 | if (die->sibling != NULL && level > 0) | |
17343 | { | |
17344 | dump_die_1 (f, level, max_level, die->sibling); | |
c906108c SS |
17345 | } |
17346 | } | |
17347 | ||
d97bc12b DE |
17348 | /* This is called from the pdie macro in gdbinit.in. |
17349 | It's not static so gcc will keep a copy callable from gdb. */ | |
17350 | ||
17351 | void | |
17352 | dump_die (struct die_info *die, int max_level) | |
17353 | { | |
17354 | dump_die_1 (gdb_stdlog, 0, max_level, die); | |
17355 | } | |
17356 | ||
f9aca02d | 17357 | static void |
51545339 | 17358 | store_in_ref_table (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17359 | { |
51545339 | 17360 | void **slot; |
c906108c | 17361 | |
b64f50a1 JK |
17362 | slot = htab_find_slot_with_hash (cu->die_hash, die, die->offset.sect_off, |
17363 | INSERT); | |
51545339 DJ |
17364 | |
17365 | *slot = die; | |
c906108c SS |
17366 | } |
17367 | ||
b64f50a1 JK |
17368 | /* DW_ADDR is always stored already as sect_offset; despite for the forms |
17369 | besides DW_FORM_ref_addr it is stored as cu_offset in the DWARF file. */ | |
17370 | ||
93311388 DE |
17371 | static int |
17372 | is_ref_attr (struct attribute *attr) | |
c906108c | 17373 | { |
c906108c SS |
17374 | switch (attr->form) |
17375 | { | |
17376 | case DW_FORM_ref_addr: | |
c906108c SS |
17377 | case DW_FORM_ref1: |
17378 | case DW_FORM_ref2: | |
17379 | case DW_FORM_ref4: | |
613e1657 | 17380 | case DW_FORM_ref8: |
c906108c | 17381 | case DW_FORM_ref_udata: |
36586728 | 17382 | case DW_FORM_GNU_ref_alt: |
93311388 | 17383 | return 1; |
c906108c | 17384 | default: |
93311388 | 17385 | return 0; |
c906108c | 17386 | } |
93311388 DE |
17387 | } |
17388 | ||
b64f50a1 JK |
17389 | /* Return DIE offset of ATTR. Return 0 with complaint if ATTR is not of the |
17390 | required kind. */ | |
17391 | ||
17392 | static sect_offset | |
93311388 DE |
17393 | dwarf2_get_ref_die_offset (struct attribute *attr) |
17394 | { | |
4568ecf9 | 17395 | sect_offset retval = { DW_UNSND (attr) }; |
b64f50a1 | 17396 | |
93311388 | 17397 | if (is_ref_attr (attr)) |
b64f50a1 | 17398 | return retval; |
93311388 | 17399 | |
b64f50a1 | 17400 | retval.sect_off = 0; |
93311388 DE |
17401 | complaint (&symfile_complaints, |
17402 | _("unsupported die ref attribute form: '%s'"), | |
17403 | dwarf_form_name (attr->form)); | |
b64f50a1 | 17404 | return retval; |
c906108c SS |
17405 | } |
17406 | ||
43bbcdc2 PH |
17407 | /* Return the constant value held by ATTR. Return DEFAULT_VALUE if |
17408 | * the value held by the attribute is not constant. */ | |
a02abb62 | 17409 | |
43bbcdc2 | 17410 | static LONGEST |
a02abb62 JB |
17411 | dwarf2_get_attr_constant_value (struct attribute *attr, int default_value) |
17412 | { | |
17413 | if (attr->form == DW_FORM_sdata) | |
17414 | return DW_SND (attr); | |
17415 | else if (attr->form == DW_FORM_udata | |
17416 | || attr->form == DW_FORM_data1 | |
17417 | || attr->form == DW_FORM_data2 | |
17418 | || attr->form == DW_FORM_data4 | |
17419 | || attr->form == DW_FORM_data8) | |
17420 | return DW_UNSND (attr); | |
17421 | else | |
17422 | { | |
3e43a32a MS |
17423 | complaint (&symfile_complaints, |
17424 | _("Attribute value is not a constant (%s)"), | |
a02abb62 JB |
17425 | dwarf_form_name (attr->form)); |
17426 | return default_value; | |
17427 | } | |
17428 | } | |
17429 | ||
348e048f DE |
17430 | /* Follow reference or signature attribute ATTR of SRC_DIE. |
17431 | On entry *REF_CU is the CU of SRC_DIE. | |
17432 | On exit *REF_CU is the CU of the result. */ | |
17433 | ||
17434 | static struct die_info * | |
17435 | follow_die_ref_or_sig (struct die_info *src_die, struct attribute *attr, | |
17436 | struct dwarf2_cu **ref_cu) | |
17437 | { | |
17438 | struct die_info *die; | |
17439 | ||
17440 | if (is_ref_attr (attr)) | |
17441 | die = follow_die_ref (src_die, attr, ref_cu); | |
55f1336d | 17442 | else if (attr->form == DW_FORM_ref_sig8) |
348e048f DE |
17443 | die = follow_die_sig (src_die, attr, ref_cu); |
17444 | else | |
17445 | { | |
17446 | dump_die_for_error (src_die); | |
17447 | error (_("Dwarf Error: Expected reference attribute [in module %s]"), | |
17448 | (*ref_cu)->objfile->name); | |
17449 | } | |
17450 | ||
17451 | return die; | |
03dd20cc DJ |
17452 | } |
17453 | ||
5c631832 | 17454 | /* Follow reference OFFSET. |
673bfd45 DE |
17455 | On entry *REF_CU is the CU of the source die referencing OFFSET. |
17456 | On exit *REF_CU is the CU of the result. | |
17457 | Returns NULL if OFFSET is invalid. */ | |
f504f079 | 17458 | |
f9aca02d | 17459 | static struct die_info * |
36586728 TT |
17460 | follow_die_offset (sect_offset offset, int offset_in_dwz, |
17461 | struct dwarf2_cu **ref_cu) | |
c906108c | 17462 | { |
10b3939b | 17463 | struct die_info temp_die; |
f2f0e013 | 17464 | struct dwarf2_cu *target_cu, *cu = *ref_cu; |
10b3939b | 17465 | |
348e048f DE |
17466 | gdb_assert (cu->per_cu != NULL); |
17467 | ||
98bfdba5 PA |
17468 | target_cu = cu; |
17469 | ||
3019eac3 | 17470 | if (cu->per_cu->is_debug_types) |
348e048f DE |
17471 | { |
17472 | /* .debug_types CUs cannot reference anything outside their CU. | |
17473 | If they need to, they have to reference a signatured type via | |
55f1336d | 17474 | DW_FORM_ref_sig8. */ |
348e048f | 17475 | if (! offset_in_cu_p (&cu->header, offset)) |
5c631832 | 17476 | return NULL; |
348e048f | 17477 | } |
36586728 TT |
17478 | else if (offset_in_dwz != cu->per_cu->is_dwz |
17479 | || ! offset_in_cu_p (&cu->header, offset)) | |
10b3939b DJ |
17480 | { |
17481 | struct dwarf2_per_cu_data *per_cu; | |
9a619af0 | 17482 | |
36586728 TT |
17483 | per_cu = dwarf2_find_containing_comp_unit (offset, offset_in_dwz, |
17484 | cu->objfile); | |
03dd20cc DJ |
17485 | |
17486 | /* If necessary, add it to the queue and load its DIEs. */ | |
95554aad TT |
17487 | if (maybe_queue_comp_unit (cu, per_cu, cu->language)) |
17488 | load_full_comp_unit (per_cu, cu->language); | |
03dd20cc | 17489 | |
10b3939b DJ |
17490 | target_cu = per_cu->cu; |
17491 | } | |
98bfdba5 PA |
17492 | else if (cu->dies == NULL) |
17493 | { | |
17494 | /* We're loading full DIEs during partial symbol reading. */ | |
17495 | gdb_assert (dwarf2_per_objfile->reading_partial_symbols); | |
95554aad | 17496 | load_full_comp_unit (cu->per_cu, language_minimal); |
98bfdba5 | 17497 | } |
c906108c | 17498 | |
f2f0e013 | 17499 | *ref_cu = target_cu; |
51545339 | 17500 | temp_die.offset = offset; |
b64f50a1 | 17501 | return htab_find_with_hash (target_cu->die_hash, &temp_die, offset.sect_off); |
5c631832 | 17502 | } |
10b3939b | 17503 | |
5c631832 JK |
17504 | /* Follow reference attribute ATTR of SRC_DIE. |
17505 | On entry *REF_CU is the CU of SRC_DIE. | |
17506 | On exit *REF_CU is the CU of the result. */ | |
17507 | ||
17508 | static struct die_info * | |
17509 | follow_die_ref (struct die_info *src_die, struct attribute *attr, | |
17510 | struct dwarf2_cu **ref_cu) | |
17511 | { | |
b64f50a1 | 17512 | sect_offset offset = dwarf2_get_ref_die_offset (attr); |
5c631832 JK |
17513 | struct dwarf2_cu *cu = *ref_cu; |
17514 | struct die_info *die; | |
17515 | ||
36586728 TT |
17516 | die = follow_die_offset (offset, |
17517 | (attr->form == DW_FORM_GNU_ref_alt | |
17518 | || cu->per_cu->is_dwz), | |
17519 | ref_cu); | |
5c631832 JK |
17520 | if (!die) |
17521 | error (_("Dwarf Error: Cannot find DIE at 0x%x referenced from DIE " | |
17522 | "at 0x%x [in module %s]"), | |
b64f50a1 | 17523 | offset.sect_off, src_die->offset.sect_off, cu->objfile->name); |
348e048f | 17524 | |
5c631832 JK |
17525 | return die; |
17526 | } | |
17527 | ||
d83e736b JK |
17528 | /* Return DWARF block referenced by DW_AT_location of DIE at OFFSET at PER_CU. |
17529 | Returned value is intended for DW_OP_call*. Returned | |
17530 | dwarf2_locexpr_baton->data has lifetime of PER_CU->OBJFILE. */ | |
5c631832 JK |
17531 | |
17532 | struct dwarf2_locexpr_baton | |
8b9737bf TT |
17533 | dwarf2_fetch_die_loc_sect_off (sect_offset offset, |
17534 | struct dwarf2_per_cu_data *per_cu, | |
17535 | CORE_ADDR (*get_frame_pc) (void *baton), | |
17536 | void *baton) | |
5c631832 | 17537 | { |
918dd910 | 17538 | struct dwarf2_cu *cu; |
5c631832 JK |
17539 | struct die_info *die; |
17540 | struct attribute *attr; | |
17541 | struct dwarf2_locexpr_baton retval; | |
17542 | ||
8cf6f0b1 TT |
17543 | dw2_setup (per_cu->objfile); |
17544 | ||
918dd910 JK |
17545 | if (per_cu->cu == NULL) |
17546 | load_cu (per_cu); | |
17547 | cu = per_cu->cu; | |
17548 | ||
36586728 | 17549 | die = follow_die_offset (offset, per_cu->is_dwz, &cu); |
5c631832 JK |
17550 | if (!die) |
17551 | error (_("Dwarf Error: Cannot find DIE at 0x%x referenced in module %s"), | |
b64f50a1 | 17552 | offset.sect_off, per_cu->objfile->name); |
5c631832 JK |
17553 | |
17554 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
17555 | if (!attr) | |
17556 | { | |
e103e986 JK |
17557 | /* DWARF: "If there is no such attribute, then there is no effect.". |
17558 | DATA is ignored if SIZE is 0. */ | |
5c631832 | 17559 | |
e103e986 | 17560 | retval.data = NULL; |
5c631832 JK |
17561 | retval.size = 0; |
17562 | } | |
8cf6f0b1 TT |
17563 | else if (attr_form_is_section_offset (attr)) |
17564 | { | |
17565 | struct dwarf2_loclist_baton loclist_baton; | |
17566 | CORE_ADDR pc = (*get_frame_pc) (baton); | |
17567 | size_t size; | |
17568 | ||
17569 | fill_in_loclist_baton (cu, &loclist_baton, attr); | |
17570 | ||
17571 | retval.data = dwarf2_find_location_expression (&loclist_baton, | |
17572 | &size, pc); | |
17573 | retval.size = size; | |
17574 | } | |
5c631832 JK |
17575 | else |
17576 | { | |
17577 | if (!attr_form_is_block (attr)) | |
17578 | error (_("Dwarf Error: DIE at 0x%x referenced in module %s " | |
17579 | "is neither DW_FORM_block* nor DW_FORM_exprloc"), | |
b64f50a1 | 17580 | offset.sect_off, per_cu->objfile->name); |
5c631832 JK |
17581 | |
17582 | retval.data = DW_BLOCK (attr)->data; | |
17583 | retval.size = DW_BLOCK (attr)->size; | |
17584 | } | |
17585 | retval.per_cu = cu->per_cu; | |
918dd910 | 17586 | |
918dd910 JK |
17587 | age_cached_comp_units (); |
17588 | ||
5c631832 | 17589 | return retval; |
348e048f DE |
17590 | } |
17591 | ||
8b9737bf TT |
17592 | /* Like dwarf2_fetch_die_loc_sect_off, but take a CU |
17593 | offset. */ | |
17594 | ||
17595 | struct dwarf2_locexpr_baton | |
17596 | dwarf2_fetch_die_loc_cu_off (cu_offset offset_in_cu, | |
17597 | struct dwarf2_per_cu_data *per_cu, | |
17598 | CORE_ADDR (*get_frame_pc) (void *baton), | |
17599 | void *baton) | |
17600 | { | |
17601 | sect_offset offset = { per_cu->offset.sect_off + offset_in_cu.cu_off }; | |
17602 | ||
17603 | return dwarf2_fetch_die_loc_sect_off (offset, per_cu, get_frame_pc, baton); | |
17604 | } | |
17605 | ||
8a9b8146 TT |
17606 | /* Return the type of the DIE at DIE_OFFSET in the CU named by |
17607 | PER_CU. */ | |
17608 | ||
17609 | struct type * | |
b64f50a1 | 17610 | dwarf2_get_die_type (cu_offset die_offset, |
8a9b8146 TT |
17611 | struct dwarf2_per_cu_data *per_cu) |
17612 | { | |
b64f50a1 JK |
17613 | sect_offset die_offset_sect; |
17614 | ||
8a9b8146 | 17615 | dw2_setup (per_cu->objfile); |
b64f50a1 JK |
17616 | |
17617 | die_offset_sect.sect_off = per_cu->offset.sect_off + die_offset.cu_off; | |
17618 | return get_die_type_at_offset (die_offset_sect, per_cu); | |
8a9b8146 TT |
17619 | } |
17620 | ||
348e048f DE |
17621 | /* Follow the signature attribute ATTR in SRC_DIE. |
17622 | On entry *REF_CU is the CU of SRC_DIE. | |
17623 | On exit *REF_CU is the CU of the result. */ | |
17624 | ||
17625 | static struct die_info * | |
17626 | follow_die_sig (struct die_info *src_die, struct attribute *attr, | |
17627 | struct dwarf2_cu **ref_cu) | |
17628 | { | |
17629 | struct objfile *objfile = (*ref_cu)->objfile; | |
17630 | struct die_info temp_die; | |
17631 | struct signatured_type *sig_type = DW_SIGNATURED_TYPE (attr); | |
17632 | struct dwarf2_cu *sig_cu; | |
17633 | struct die_info *die; | |
17634 | ||
17635 | /* sig_type will be NULL if the signatured type is missing from | |
17636 | the debug info. */ | |
17637 | if (sig_type == NULL) | |
17638 | error (_("Dwarf Error: Cannot find signatured DIE referenced from DIE " | |
17639 | "at 0x%x [in module %s]"), | |
b64f50a1 | 17640 | src_die->offset.sect_off, objfile->name); |
348e048f DE |
17641 | |
17642 | /* If necessary, add it to the queue and load its DIEs. */ | |
17643 | ||
95554aad | 17644 | if (maybe_queue_comp_unit (*ref_cu, &sig_type->per_cu, language_minimal)) |
a0f42c21 | 17645 | read_signatured_type (sig_type); |
348e048f DE |
17646 | |
17647 | gdb_assert (sig_type->per_cu.cu != NULL); | |
17648 | ||
17649 | sig_cu = sig_type->per_cu.cu; | |
3019eac3 DE |
17650 | gdb_assert (sig_type->type_offset_in_section.sect_off != 0); |
17651 | temp_die.offset = sig_type->type_offset_in_section; | |
b64f50a1 JK |
17652 | die = htab_find_with_hash (sig_cu->die_hash, &temp_die, |
17653 | temp_die.offset.sect_off); | |
348e048f DE |
17654 | if (die) |
17655 | { | |
796a7ff8 DE |
17656 | /* For .gdb_index version 7 keep track of included TUs. |
17657 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. */ | |
17658 | if (dwarf2_per_objfile->index_table != NULL | |
17659 | && dwarf2_per_objfile->index_table->version <= 7) | |
17660 | { | |
17661 | VEC_safe_push (dwarf2_per_cu_ptr, | |
17662 | (*ref_cu)->per_cu->imported_symtabs, | |
17663 | sig_cu->per_cu); | |
17664 | } | |
17665 | ||
348e048f DE |
17666 | *ref_cu = sig_cu; |
17667 | return die; | |
17668 | } | |
17669 | ||
3e43a32a MS |
17670 | error (_("Dwarf Error: Cannot find signatured DIE at 0x%x referenced " |
17671 | "from DIE at 0x%x [in module %s]"), | |
b64f50a1 | 17672 | temp_die.offset.sect_off, src_die->offset.sect_off, objfile->name); |
348e048f DE |
17673 | } |
17674 | ||
17675 | /* Given an offset of a signatured type, return its signatured_type. */ | |
17676 | ||
17677 | static struct signatured_type * | |
8b70b953 TT |
17678 | lookup_signatured_type_at_offset (struct objfile *objfile, |
17679 | struct dwarf2_section_info *section, | |
b64f50a1 | 17680 | sect_offset offset) |
348e048f | 17681 | { |
b64f50a1 | 17682 | gdb_byte *info_ptr = section->buffer + offset.sect_off; |
348e048f DE |
17683 | unsigned int length, initial_length_size; |
17684 | unsigned int sig_offset; | |
52dc124a | 17685 | struct signatured_type find_entry, *sig_type; |
348e048f DE |
17686 | |
17687 | length = read_initial_length (objfile->obfd, info_ptr, &initial_length_size); | |
17688 | sig_offset = (initial_length_size | |
17689 | + 2 /*version*/ | |
17690 | + (initial_length_size == 4 ? 4 : 8) /*debug_abbrev_offset*/ | |
17691 | + 1 /*address_size*/); | |
17692 | find_entry.signature = bfd_get_64 (objfile->obfd, info_ptr + sig_offset); | |
52dc124a | 17693 | sig_type = htab_find (dwarf2_per_objfile->signatured_types, &find_entry); |
348e048f DE |
17694 | |
17695 | /* This is only used to lookup previously recorded types. | |
17696 | If we didn't find it, it's our bug. */ | |
52dc124a DE |
17697 | gdb_assert (sig_type != NULL); |
17698 | gdb_assert (offset.sect_off == sig_type->per_cu.offset.sect_off); | |
348e048f | 17699 | |
52dc124a | 17700 | return sig_type; |
348e048f DE |
17701 | } |
17702 | ||
e5fe5e75 | 17703 | /* Load the DIEs associated with type unit PER_CU into memory. */ |
348e048f DE |
17704 | |
17705 | static void | |
e5fe5e75 | 17706 | load_full_type_unit (struct dwarf2_per_cu_data *per_cu) |
348e048f | 17707 | { |
52dc124a | 17708 | struct signatured_type *sig_type; |
348e048f | 17709 | |
f4dc4d17 DE |
17710 | /* Caller is responsible for ensuring type_unit_groups don't get here. */ |
17711 | gdb_assert (! IS_TYPE_UNIT_GROUP (per_cu)); | |
17712 | ||
6721b2ec DE |
17713 | /* We have the per_cu, but we need the signatured_type. |
17714 | Fortunately this is an easy translation. */ | |
17715 | gdb_assert (per_cu->is_debug_types); | |
17716 | sig_type = (struct signatured_type *) per_cu; | |
348e048f | 17717 | |
6721b2ec | 17718 | gdb_assert (per_cu->cu == NULL); |
348e048f | 17719 | |
52dc124a | 17720 | read_signatured_type (sig_type); |
348e048f | 17721 | |
6721b2ec | 17722 | gdb_assert (per_cu->cu != NULL); |
348e048f DE |
17723 | } |
17724 | ||
dee91e82 DE |
17725 | /* die_reader_func for read_signatured_type. |
17726 | This is identical to load_full_comp_unit_reader, | |
17727 | but is kept separate for now. */ | |
348e048f DE |
17728 | |
17729 | static void | |
dee91e82 DE |
17730 | read_signatured_type_reader (const struct die_reader_specs *reader, |
17731 | gdb_byte *info_ptr, | |
17732 | struct die_info *comp_unit_die, | |
17733 | int has_children, | |
17734 | void *data) | |
348e048f | 17735 | { |
dee91e82 | 17736 | struct dwarf2_cu *cu = reader->cu; |
348e048f | 17737 | |
dee91e82 DE |
17738 | gdb_assert (cu->die_hash == NULL); |
17739 | cu->die_hash = | |
17740 | htab_create_alloc_ex (cu->header.length / 12, | |
17741 | die_hash, | |
17742 | die_eq, | |
17743 | NULL, | |
17744 | &cu->comp_unit_obstack, | |
17745 | hashtab_obstack_allocate, | |
17746 | dummy_obstack_deallocate); | |
348e048f | 17747 | |
dee91e82 DE |
17748 | if (has_children) |
17749 | comp_unit_die->child = read_die_and_siblings (reader, info_ptr, | |
17750 | &info_ptr, comp_unit_die); | |
17751 | cu->dies = comp_unit_die; | |
17752 | /* comp_unit_die is not stored in die_hash, no need. */ | |
348e048f DE |
17753 | |
17754 | /* We try not to read any attributes in this function, because not | |
9cdd5dbd | 17755 | all CUs needed for references have been loaded yet, and symbol |
348e048f | 17756 | table processing isn't initialized. But we have to set the CU language, |
dee91e82 DE |
17757 | or we won't be able to build types correctly. |
17758 | Similarly, if we do not read the producer, we can not apply | |
17759 | producer-specific interpretation. */ | |
95554aad | 17760 | prepare_one_comp_unit (cu, cu->dies, language_minimal); |
dee91e82 | 17761 | } |
348e048f | 17762 | |
3019eac3 DE |
17763 | /* Read in a signatured type and build its CU and DIEs. |
17764 | If the type is a stub for the real type in a DWO file, | |
17765 | read in the real type from the DWO file as well. */ | |
dee91e82 DE |
17766 | |
17767 | static void | |
17768 | read_signatured_type (struct signatured_type *sig_type) | |
17769 | { | |
17770 | struct dwarf2_per_cu_data *per_cu = &sig_type->per_cu; | |
348e048f | 17771 | |
3019eac3 | 17772 | gdb_assert (per_cu->is_debug_types); |
dee91e82 | 17773 | gdb_assert (per_cu->cu == NULL); |
348e048f | 17774 | |
f4dc4d17 DE |
17775 | init_cutu_and_read_dies (per_cu, NULL, 0, 1, |
17776 | read_signatured_type_reader, NULL); | |
c906108c SS |
17777 | } |
17778 | ||
c906108c SS |
17779 | /* Decode simple location descriptions. |
17780 | Given a pointer to a dwarf block that defines a location, compute | |
17781 | the location and return the value. | |
17782 | ||
4cecd739 DJ |
17783 | NOTE drow/2003-11-18: This function is called in two situations |
17784 | now: for the address of static or global variables (partial symbols | |
17785 | only) and for offsets into structures which are expected to be | |
17786 | (more or less) constant. The partial symbol case should go away, | |
17787 | and only the constant case should remain. That will let this | |
17788 | function complain more accurately. A few special modes are allowed | |
17789 | without complaint for global variables (for instance, global | |
17790 | register values and thread-local values). | |
c906108c SS |
17791 | |
17792 | A location description containing no operations indicates that the | |
4cecd739 | 17793 | object is optimized out. The return value is 0 for that case. |
6b992462 DJ |
17794 | FIXME drow/2003-11-16: No callers check for this case any more; soon all |
17795 | callers will only want a very basic result and this can become a | |
21ae7a4d JK |
17796 | complaint. |
17797 | ||
17798 | Note that stack[0] is unused except as a default error return. */ | |
c906108c SS |
17799 | |
17800 | static CORE_ADDR | |
e7c27a73 | 17801 | decode_locdesc (struct dwarf_block *blk, struct dwarf2_cu *cu) |
c906108c | 17802 | { |
e7c27a73 | 17803 | struct objfile *objfile = cu->objfile; |
56eb65bd SP |
17804 | size_t i; |
17805 | size_t size = blk->size; | |
21ae7a4d JK |
17806 | gdb_byte *data = blk->data; |
17807 | CORE_ADDR stack[64]; | |
17808 | int stacki; | |
17809 | unsigned int bytes_read, unsnd; | |
17810 | gdb_byte op; | |
c906108c | 17811 | |
21ae7a4d JK |
17812 | i = 0; |
17813 | stacki = 0; | |
17814 | stack[stacki] = 0; | |
17815 | stack[++stacki] = 0; | |
17816 | ||
17817 | while (i < size) | |
17818 | { | |
17819 | op = data[i++]; | |
17820 | switch (op) | |
17821 | { | |
17822 | case DW_OP_lit0: | |
17823 | case DW_OP_lit1: | |
17824 | case DW_OP_lit2: | |
17825 | case DW_OP_lit3: | |
17826 | case DW_OP_lit4: | |
17827 | case DW_OP_lit5: | |
17828 | case DW_OP_lit6: | |
17829 | case DW_OP_lit7: | |
17830 | case DW_OP_lit8: | |
17831 | case DW_OP_lit9: | |
17832 | case DW_OP_lit10: | |
17833 | case DW_OP_lit11: | |
17834 | case DW_OP_lit12: | |
17835 | case DW_OP_lit13: | |
17836 | case DW_OP_lit14: | |
17837 | case DW_OP_lit15: | |
17838 | case DW_OP_lit16: | |
17839 | case DW_OP_lit17: | |
17840 | case DW_OP_lit18: | |
17841 | case DW_OP_lit19: | |
17842 | case DW_OP_lit20: | |
17843 | case DW_OP_lit21: | |
17844 | case DW_OP_lit22: | |
17845 | case DW_OP_lit23: | |
17846 | case DW_OP_lit24: | |
17847 | case DW_OP_lit25: | |
17848 | case DW_OP_lit26: | |
17849 | case DW_OP_lit27: | |
17850 | case DW_OP_lit28: | |
17851 | case DW_OP_lit29: | |
17852 | case DW_OP_lit30: | |
17853 | case DW_OP_lit31: | |
17854 | stack[++stacki] = op - DW_OP_lit0; | |
17855 | break; | |
f1bea926 | 17856 | |
21ae7a4d JK |
17857 | case DW_OP_reg0: |
17858 | case DW_OP_reg1: | |
17859 | case DW_OP_reg2: | |
17860 | case DW_OP_reg3: | |
17861 | case DW_OP_reg4: | |
17862 | case DW_OP_reg5: | |
17863 | case DW_OP_reg6: | |
17864 | case DW_OP_reg7: | |
17865 | case DW_OP_reg8: | |
17866 | case DW_OP_reg9: | |
17867 | case DW_OP_reg10: | |
17868 | case DW_OP_reg11: | |
17869 | case DW_OP_reg12: | |
17870 | case DW_OP_reg13: | |
17871 | case DW_OP_reg14: | |
17872 | case DW_OP_reg15: | |
17873 | case DW_OP_reg16: | |
17874 | case DW_OP_reg17: | |
17875 | case DW_OP_reg18: | |
17876 | case DW_OP_reg19: | |
17877 | case DW_OP_reg20: | |
17878 | case DW_OP_reg21: | |
17879 | case DW_OP_reg22: | |
17880 | case DW_OP_reg23: | |
17881 | case DW_OP_reg24: | |
17882 | case DW_OP_reg25: | |
17883 | case DW_OP_reg26: | |
17884 | case DW_OP_reg27: | |
17885 | case DW_OP_reg28: | |
17886 | case DW_OP_reg29: | |
17887 | case DW_OP_reg30: | |
17888 | case DW_OP_reg31: | |
17889 | stack[++stacki] = op - DW_OP_reg0; | |
17890 | if (i < size) | |
17891 | dwarf2_complex_location_expr_complaint (); | |
17892 | break; | |
c906108c | 17893 | |
21ae7a4d JK |
17894 | case DW_OP_regx: |
17895 | unsnd = read_unsigned_leb128 (NULL, (data + i), &bytes_read); | |
17896 | i += bytes_read; | |
17897 | stack[++stacki] = unsnd; | |
17898 | if (i < size) | |
17899 | dwarf2_complex_location_expr_complaint (); | |
17900 | break; | |
c906108c | 17901 | |
21ae7a4d JK |
17902 | case DW_OP_addr: |
17903 | stack[++stacki] = read_address (objfile->obfd, &data[i], | |
17904 | cu, &bytes_read); | |
17905 | i += bytes_read; | |
17906 | break; | |
d53d4ac5 | 17907 | |
21ae7a4d JK |
17908 | case DW_OP_const1u: |
17909 | stack[++stacki] = read_1_byte (objfile->obfd, &data[i]); | |
17910 | i += 1; | |
17911 | break; | |
17912 | ||
17913 | case DW_OP_const1s: | |
17914 | stack[++stacki] = read_1_signed_byte (objfile->obfd, &data[i]); | |
17915 | i += 1; | |
17916 | break; | |
17917 | ||
17918 | case DW_OP_const2u: | |
17919 | stack[++stacki] = read_2_bytes (objfile->obfd, &data[i]); | |
17920 | i += 2; | |
17921 | break; | |
17922 | ||
17923 | case DW_OP_const2s: | |
17924 | stack[++stacki] = read_2_signed_bytes (objfile->obfd, &data[i]); | |
17925 | i += 2; | |
17926 | break; | |
d53d4ac5 | 17927 | |
21ae7a4d JK |
17928 | case DW_OP_const4u: |
17929 | stack[++stacki] = read_4_bytes (objfile->obfd, &data[i]); | |
17930 | i += 4; | |
17931 | break; | |
17932 | ||
17933 | case DW_OP_const4s: | |
17934 | stack[++stacki] = read_4_signed_bytes (objfile->obfd, &data[i]); | |
17935 | i += 4; | |
17936 | break; | |
17937 | ||
585861ea JK |
17938 | case DW_OP_const8u: |
17939 | stack[++stacki] = read_8_bytes (objfile->obfd, &data[i]); | |
17940 | i += 8; | |
17941 | break; | |
17942 | ||
21ae7a4d JK |
17943 | case DW_OP_constu: |
17944 | stack[++stacki] = read_unsigned_leb128 (NULL, (data + i), | |
17945 | &bytes_read); | |
17946 | i += bytes_read; | |
17947 | break; | |
17948 | ||
17949 | case DW_OP_consts: | |
17950 | stack[++stacki] = read_signed_leb128 (NULL, (data + i), &bytes_read); | |
17951 | i += bytes_read; | |
17952 | break; | |
17953 | ||
17954 | case DW_OP_dup: | |
17955 | stack[stacki + 1] = stack[stacki]; | |
17956 | stacki++; | |
17957 | break; | |
17958 | ||
17959 | case DW_OP_plus: | |
17960 | stack[stacki - 1] += stack[stacki]; | |
17961 | stacki--; | |
17962 | break; | |
17963 | ||
17964 | case DW_OP_plus_uconst: | |
17965 | stack[stacki] += read_unsigned_leb128 (NULL, (data + i), | |
17966 | &bytes_read); | |
17967 | i += bytes_read; | |
17968 | break; | |
17969 | ||
17970 | case DW_OP_minus: | |
17971 | stack[stacki - 1] -= stack[stacki]; | |
17972 | stacki--; | |
17973 | break; | |
17974 | ||
17975 | case DW_OP_deref: | |
17976 | /* If we're not the last op, then we definitely can't encode | |
17977 | this using GDB's address_class enum. This is valid for partial | |
17978 | global symbols, although the variable's address will be bogus | |
17979 | in the psymtab. */ | |
17980 | if (i < size) | |
17981 | dwarf2_complex_location_expr_complaint (); | |
17982 | break; | |
17983 | ||
17984 | case DW_OP_GNU_push_tls_address: | |
17985 | /* The top of the stack has the offset from the beginning | |
17986 | of the thread control block at which the variable is located. */ | |
17987 | /* Nothing should follow this operator, so the top of stack would | |
17988 | be returned. */ | |
17989 | /* This is valid for partial global symbols, but the variable's | |
585861ea JK |
17990 | address will be bogus in the psymtab. Make it always at least |
17991 | non-zero to not look as a variable garbage collected by linker | |
17992 | which have DW_OP_addr 0. */ | |
21ae7a4d JK |
17993 | if (i < size) |
17994 | dwarf2_complex_location_expr_complaint (); | |
585861ea | 17995 | stack[stacki]++; |
21ae7a4d JK |
17996 | break; |
17997 | ||
17998 | case DW_OP_GNU_uninit: | |
17999 | break; | |
18000 | ||
3019eac3 | 18001 | case DW_OP_GNU_addr_index: |
49f6c839 | 18002 | case DW_OP_GNU_const_index: |
3019eac3 DE |
18003 | stack[++stacki] = read_addr_index_from_leb128 (cu, &data[i], |
18004 | &bytes_read); | |
18005 | i += bytes_read; | |
18006 | break; | |
18007 | ||
21ae7a4d JK |
18008 | default: |
18009 | { | |
f39c6ffd | 18010 | const char *name = get_DW_OP_name (op); |
21ae7a4d JK |
18011 | |
18012 | if (name) | |
18013 | complaint (&symfile_complaints, _("unsupported stack op: '%s'"), | |
18014 | name); | |
18015 | else | |
18016 | complaint (&symfile_complaints, _("unsupported stack op: '%02x'"), | |
18017 | op); | |
18018 | } | |
18019 | ||
18020 | return (stack[stacki]); | |
d53d4ac5 | 18021 | } |
3c6e0cb3 | 18022 | |
21ae7a4d JK |
18023 | /* Enforce maximum stack depth of SIZE-1 to avoid writing |
18024 | outside of the allocated space. Also enforce minimum>0. */ | |
18025 | if (stacki >= ARRAY_SIZE (stack) - 1) | |
18026 | { | |
18027 | complaint (&symfile_complaints, | |
18028 | _("location description stack overflow")); | |
18029 | return 0; | |
18030 | } | |
18031 | ||
18032 | if (stacki <= 0) | |
18033 | { | |
18034 | complaint (&symfile_complaints, | |
18035 | _("location description stack underflow")); | |
18036 | return 0; | |
18037 | } | |
18038 | } | |
18039 | return (stack[stacki]); | |
c906108c SS |
18040 | } |
18041 | ||
18042 | /* memory allocation interface */ | |
18043 | ||
c906108c | 18044 | static struct dwarf_block * |
7b5a2f43 | 18045 | dwarf_alloc_block (struct dwarf2_cu *cu) |
c906108c SS |
18046 | { |
18047 | struct dwarf_block *blk; | |
18048 | ||
18049 | blk = (struct dwarf_block *) | |
7b5a2f43 | 18050 | obstack_alloc (&cu->comp_unit_obstack, sizeof (struct dwarf_block)); |
c906108c SS |
18051 | return (blk); |
18052 | } | |
18053 | ||
c906108c | 18054 | static struct die_info * |
b60c80d6 | 18055 | dwarf_alloc_die (struct dwarf2_cu *cu, int num_attrs) |
c906108c SS |
18056 | { |
18057 | struct die_info *die; | |
b60c80d6 DJ |
18058 | size_t size = sizeof (struct die_info); |
18059 | ||
18060 | if (num_attrs > 1) | |
18061 | size += (num_attrs - 1) * sizeof (struct attribute); | |
c906108c | 18062 | |
b60c80d6 | 18063 | die = (struct die_info *) obstack_alloc (&cu->comp_unit_obstack, size); |
c906108c SS |
18064 | memset (die, 0, sizeof (struct die_info)); |
18065 | return (die); | |
18066 | } | |
2e276125 JB |
18067 | |
18068 | \f | |
18069 | /* Macro support. */ | |
18070 | ||
233d95b5 JK |
18071 | /* Return file name relative to the compilation directory of file number I in |
18072 | *LH's file name table. The result is allocated using xmalloc; the caller is | |
2e276125 | 18073 | responsible for freeing it. */ |
233d95b5 | 18074 | |
2e276125 | 18075 | static char * |
233d95b5 | 18076 | file_file_name (int file, struct line_header *lh) |
2e276125 | 18077 | { |
6a83a1e6 EZ |
18078 | /* Is the file number a valid index into the line header's file name |
18079 | table? Remember that file numbers start with one, not zero. */ | |
18080 | if (1 <= file && file <= lh->num_file_names) | |
18081 | { | |
18082 | struct file_entry *fe = &lh->file_names[file - 1]; | |
6e70227d | 18083 | |
233d95b5 | 18084 | if (IS_ABSOLUTE_PATH (fe->name) || fe->dir_index == 0) |
6a83a1e6 | 18085 | return xstrdup (fe->name); |
233d95b5 JK |
18086 | return concat (lh->include_dirs[fe->dir_index - 1], SLASH_STRING, |
18087 | fe->name, NULL); | |
6a83a1e6 | 18088 | } |
2e276125 JB |
18089 | else |
18090 | { | |
6a83a1e6 EZ |
18091 | /* The compiler produced a bogus file number. We can at least |
18092 | record the macro definitions made in the file, even if we | |
18093 | won't be able to find the file by name. */ | |
18094 | char fake_name[80]; | |
9a619af0 | 18095 | |
8c042590 PM |
18096 | xsnprintf (fake_name, sizeof (fake_name), |
18097 | "<bad macro file number %d>", file); | |
2e276125 | 18098 | |
6e70227d | 18099 | complaint (&symfile_complaints, |
6a83a1e6 EZ |
18100 | _("bad file number in macro information (%d)"), |
18101 | file); | |
2e276125 | 18102 | |
6a83a1e6 | 18103 | return xstrdup (fake_name); |
2e276125 JB |
18104 | } |
18105 | } | |
18106 | ||
233d95b5 JK |
18107 | /* Return the full name of file number I in *LH's file name table. |
18108 | Use COMP_DIR as the name of the current directory of the | |
18109 | compilation. The result is allocated using xmalloc; the caller is | |
18110 | responsible for freeing it. */ | |
18111 | static char * | |
18112 | file_full_name (int file, struct line_header *lh, const char *comp_dir) | |
18113 | { | |
18114 | /* Is the file number a valid index into the line header's file name | |
18115 | table? Remember that file numbers start with one, not zero. */ | |
18116 | if (1 <= file && file <= lh->num_file_names) | |
18117 | { | |
18118 | char *relative = file_file_name (file, lh); | |
18119 | ||
18120 | if (IS_ABSOLUTE_PATH (relative) || comp_dir == NULL) | |
18121 | return relative; | |
18122 | return reconcat (relative, comp_dir, SLASH_STRING, relative, NULL); | |
18123 | } | |
18124 | else | |
18125 | return file_file_name (file, lh); | |
18126 | } | |
18127 | ||
2e276125 JB |
18128 | |
18129 | static struct macro_source_file * | |
18130 | macro_start_file (int file, int line, | |
18131 | struct macro_source_file *current_file, | |
18132 | const char *comp_dir, | |
18133 | struct line_header *lh, struct objfile *objfile) | |
18134 | { | |
233d95b5 JK |
18135 | /* File name relative to the compilation directory of this source file. */ |
18136 | char *file_name = file_file_name (file, lh); | |
2e276125 JB |
18137 | |
18138 | /* We don't create a macro table for this compilation unit | |
18139 | at all until we actually get a filename. */ | |
18140 | if (! pending_macros) | |
6532ff36 | 18141 | pending_macros = new_macro_table (&objfile->per_bfd->storage_obstack, |
233d95b5 JK |
18142 | objfile->per_bfd->macro_cache, |
18143 | comp_dir); | |
2e276125 JB |
18144 | |
18145 | if (! current_file) | |
abc9d0dc TT |
18146 | { |
18147 | /* If we have no current file, then this must be the start_file | |
18148 | directive for the compilation unit's main source file. */ | |
233d95b5 | 18149 | current_file = macro_set_main (pending_macros, file_name); |
abc9d0dc TT |
18150 | macro_define_special (pending_macros); |
18151 | } | |
2e276125 | 18152 | else |
233d95b5 | 18153 | current_file = macro_include (current_file, line, file_name); |
2e276125 | 18154 | |
233d95b5 | 18155 | xfree (file_name); |
6e70227d | 18156 | |
2e276125 JB |
18157 | return current_file; |
18158 | } | |
18159 | ||
18160 | ||
18161 | /* Copy the LEN characters at BUF to a xmalloc'ed block of memory, | |
18162 | followed by a null byte. */ | |
18163 | static char * | |
18164 | copy_string (const char *buf, int len) | |
18165 | { | |
18166 | char *s = xmalloc (len + 1); | |
9a619af0 | 18167 | |
2e276125 JB |
18168 | memcpy (s, buf, len); |
18169 | s[len] = '\0'; | |
2e276125 JB |
18170 | return s; |
18171 | } | |
18172 | ||
18173 | ||
18174 | static const char * | |
18175 | consume_improper_spaces (const char *p, const char *body) | |
18176 | { | |
18177 | if (*p == ' ') | |
18178 | { | |
4d3c2250 | 18179 | complaint (&symfile_complaints, |
3e43a32a MS |
18180 | _("macro definition contains spaces " |
18181 | "in formal argument list:\n`%s'"), | |
4d3c2250 | 18182 | body); |
2e276125 JB |
18183 | |
18184 | while (*p == ' ') | |
18185 | p++; | |
18186 | } | |
18187 | ||
18188 | return p; | |
18189 | } | |
18190 | ||
18191 | ||
18192 | static void | |
18193 | parse_macro_definition (struct macro_source_file *file, int line, | |
18194 | const char *body) | |
18195 | { | |
18196 | const char *p; | |
18197 | ||
18198 | /* The body string takes one of two forms. For object-like macro | |
18199 | definitions, it should be: | |
18200 | ||
18201 | <macro name> " " <definition> | |
18202 | ||
18203 | For function-like macro definitions, it should be: | |
18204 | ||
18205 | <macro name> "() " <definition> | |
18206 | or | |
18207 | <macro name> "(" <arg name> ( "," <arg name> ) * ") " <definition> | |
18208 | ||
18209 | Spaces may appear only where explicitly indicated, and in the | |
18210 | <definition>. | |
18211 | ||
18212 | The Dwarf 2 spec says that an object-like macro's name is always | |
18213 | followed by a space, but versions of GCC around March 2002 omit | |
6e70227d | 18214 | the space when the macro's definition is the empty string. |
2e276125 JB |
18215 | |
18216 | The Dwarf 2 spec says that there should be no spaces between the | |
18217 | formal arguments in a function-like macro's formal argument list, | |
18218 | but versions of GCC around March 2002 include spaces after the | |
18219 | commas. */ | |
18220 | ||
18221 | ||
18222 | /* Find the extent of the macro name. The macro name is terminated | |
18223 | by either a space or null character (for an object-like macro) or | |
18224 | an opening paren (for a function-like macro). */ | |
18225 | for (p = body; *p; p++) | |
18226 | if (*p == ' ' || *p == '(') | |
18227 | break; | |
18228 | ||
18229 | if (*p == ' ' || *p == '\0') | |
18230 | { | |
18231 | /* It's an object-like macro. */ | |
18232 | int name_len = p - body; | |
18233 | char *name = copy_string (body, name_len); | |
18234 | const char *replacement; | |
18235 | ||
18236 | if (*p == ' ') | |
18237 | replacement = body + name_len + 1; | |
18238 | else | |
18239 | { | |
4d3c2250 | 18240 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
18241 | replacement = body + name_len; |
18242 | } | |
6e70227d | 18243 | |
2e276125 JB |
18244 | macro_define_object (file, line, name, replacement); |
18245 | ||
18246 | xfree (name); | |
18247 | } | |
18248 | else if (*p == '(') | |
18249 | { | |
18250 | /* It's a function-like macro. */ | |
18251 | char *name = copy_string (body, p - body); | |
18252 | int argc = 0; | |
18253 | int argv_size = 1; | |
18254 | char **argv = xmalloc (argv_size * sizeof (*argv)); | |
18255 | ||
18256 | p++; | |
18257 | ||
18258 | p = consume_improper_spaces (p, body); | |
18259 | ||
18260 | /* Parse the formal argument list. */ | |
18261 | while (*p && *p != ')') | |
18262 | { | |
18263 | /* Find the extent of the current argument name. */ | |
18264 | const char *arg_start = p; | |
18265 | ||
18266 | while (*p && *p != ',' && *p != ')' && *p != ' ') | |
18267 | p++; | |
18268 | ||
18269 | if (! *p || p == arg_start) | |
4d3c2250 | 18270 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
18271 | else |
18272 | { | |
18273 | /* Make sure argv has room for the new argument. */ | |
18274 | if (argc >= argv_size) | |
18275 | { | |
18276 | argv_size *= 2; | |
18277 | argv = xrealloc (argv, argv_size * sizeof (*argv)); | |
18278 | } | |
18279 | ||
18280 | argv[argc++] = copy_string (arg_start, p - arg_start); | |
18281 | } | |
18282 | ||
18283 | p = consume_improper_spaces (p, body); | |
18284 | ||
18285 | /* Consume the comma, if present. */ | |
18286 | if (*p == ',') | |
18287 | { | |
18288 | p++; | |
18289 | ||
18290 | p = consume_improper_spaces (p, body); | |
18291 | } | |
18292 | } | |
18293 | ||
18294 | if (*p == ')') | |
18295 | { | |
18296 | p++; | |
18297 | ||
18298 | if (*p == ' ') | |
18299 | /* Perfectly formed definition, no complaints. */ | |
18300 | macro_define_function (file, line, name, | |
6e70227d | 18301 | argc, (const char **) argv, |
2e276125 JB |
18302 | p + 1); |
18303 | else if (*p == '\0') | |
18304 | { | |
18305 | /* Complain, but do define it. */ | |
4d3c2250 | 18306 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 | 18307 | macro_define_function (file, line, name, |
6e70227d | 18308 | argc, (const char **) argv, |
2e276125 JB |
18309 | p); |
18310 | } | |
18311 | else | |
18312 | /* Just complain. */ | |
4d3c2250 | 18313 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
18314 | } |
18315 | else | |
18316 | /* Just complain. */ | |
4d3c2250 | 18317 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
18318 | |
18319 | xfree (name); | |
18320 | { | |
18321 | int i; | |
18322 | ||
18323 | for (i = 0; i < argc; i++) | |
18324 | xfree (argv[i]); | |
18325 | } | |
18326 | xfree (argv); | |
18327 | } | |
18328 | else | |
4d3c2250 | 18329 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
18330 | } |
18331 | ||
cf2c3c16 TT |
18332 | /* Skip some bytes from BYTES according to the form given in FORM. |
18333 | Returns the new pointer. */ | |
2e276125 | 18334 | |
cf2c3c16 | 18335 | static gdb_byte * |
f664829e | 18336 | skip_form_bytes (bfd *abfd, gdb_byte *bytes, gdb_byte *buffer_end, |
cf2c3c16 TT |
18337 | enum dwarf_form form, |
18338 | unsigned int offset_size, | |
18339 | struct dwarf2_section_info *section) | |
2e276125 | 18340 | { |
cf2c3c16 | 18341 | unsigned int bytes_read; |
2e276125 | 18342 | |
cf2c3c16 | 18343 | switch (form) |
2e276125 | 18344 | { |
cf2c3c16 TT |
18345 | case DW_FORM_data1: |
18346 | case DW_FORM_flag: | |
18347 | ++bytes; | |
18348 | break; | |
18349 | ||
18350 | case DW_FORM_data2: | |
18351 | bytes += 2; | |
18352 | break; | |
18353 | ||
18354 | case DW_FORM_data4: | |
18355 | bytes += 4; | |
18356 | break; | |
18357 | ||
18358 | case DW_FORM_data8: | |
18359 | bytes += 8; | |
18360 | break; | |
18361 | ||
18362 | case DW_FORM_string: | |
18363 | read_direct_string (abfd, bytes, &bytes_read); | |
18364 | bytes += bytes_read; | |
18365 | break; | |
18366 | ||
18367 | case DW_FORM_sec_offset: | |
18368 | case DW_FORM_strp: | |
36586728 | 18369 | case DW_FORM_GNU_strp_alt: |
cf2c3c16 TT |
18370 | bytes += offset_size; |
18371 | break; | |
18372 | ||
18373 | case DW_FORM_block: | |
18374 | bytes += read_unsigned_leb128 (abfd, bytes, &bytes_read); | |
18375 | bytes += bytes_read; | |
18376 | break; | |
18377 | ||
18378 | case DW_FORM_block1: | |
18379 | bytes += 1 + read_1_byte (abfd, bytes); | |
18380 | break; | |
18381 | case DW_FORM_block2: | |
18382 | bytes += 2 + read_2_bytes (abfd, bytes); | |
18383 | break; | |
18384 | case DW_FORM_block4: | |
18385 | bytes += 4 + read_4_bytes (abfd, bytes); | |
18386 | break; | |
18387 | ||
18388 | case DW_FORM_sdata: | |
18389 | case DW_FORM_udata: | |
3019eac3 DE |
18390 | case DW_FORM_GNU_addr_index: |
18391 | case DW_FORM_GNU_str_index: | |
f664829e DE |
18392 | bytes = (gdb_byte *) gdb_skip_leb128 (bytes, buffer_end); |
18393 | if (bytes == NULL) | |
18394 | { | |
18395 | dwarf2_section_buffer_overflow_complaint (section); | |
18396 | return NULL; | |
18397 | } | |
cf2c3c16 TT |
18398 | break; |
18399 | ||
18400 | default: | |
18401 | { | |
18402 | complain: | |
18403 | complaint (&symfile_complaints, | |
18404 | _("invalid form 0x%x in `%s'"), | |
18405 | form, | |
18406 | section->asection->name); | |
18407 | return NULL; | |
18408 | } | |
2e276125 JB |
18409 | } |
18410 | ||
cf2c3c16 TT |
18411 | return bytes; |
18412 | } | |
757a13d0 | 18413 | |
cf2c3c16 TT |
18414 | /* A helper for dwarf_decode_macros that handles skipping an unknown |
18415 | opcode. Returns an updated pointer to the macro data buffer; or, | |
18416 | on error, issues a complaint and returns NULL. */ | |
757a13d0 | 18417 | |
cf2c3c16 TT |
18418 | static gdb_byte * |
18419 | skip_unknown_opcode (unsigned int opcode, | |
18420 | gdb_byte **opcode_definitions, | |
f664829e | 18421 | gdb_byte *mac_ptr, gdb_byte *mac_end, |
cf2c3c16 TT |
18422 | bfd *abfd, |
18423 | unsigned int offset_size, | |
18424 | struct dwarf2_section_info *section) | |
18425 | { | |
18426 | unsigned int bytes_read, i; | |
18427 | unsigned long arg; | |
18428 | gdb_byte *defn; | |
2e276125 | 18429 | |
cf2c3c16 | 18430 | if (opcode_definitions[opcode] == NULL) |
2e276125 | 18431 | { |
cf2c3c16 TT |
18432 | complaint (&symfile_complaints, |
18433 | _("unrecognized DW_MACFINO opcode 0x%x"), | |
18434 | opcode); | |
18435 | return NULL; | |
18436 | } | |
2e276125 | 18437 | |
cf2c3c16 TT |
18438 | defn = opcode_definitions[opcode]; |
18439 | arg = read_unsigned_leb128 (abfd, defn, &bytes_read); | |
18440 | defn += bytes_read; | |
2e276125 | 18441 | |
cf2c3c16 TT |
18442 | for (i = 0; i < arg; ++i) |
18443 | { | |
f664829e DE |
18444 | mac_ptr = skip_form_bytes (abfd, mac_ptr, mac_end, defn[i], offset_size, |
18445 | section); | |
cf2c3c16 TT |
18446 | if (mac_ptr == NULL) |
18447 | { | |
18448 | /* skip_form_bytes already issued the complaint. */ | |
18449 | return NULL; | |
18450 | } | |
18451 | } | |
757a13d0 | 18452 | |
cf2c3c16 TT |
18453 | return mac_ptr; |
18454 | } | |
757a13d0 | 18455 | |
cf2c3c16 TT |
18456 | /* A helper function which parses the header of a macro section. |
18457 | If the macro section is the extended (for now called "GNU") type, | |
18458 | then this updates *OFFSET_SIZE. Returns a pointer to just after | |
18459 | the header, or issues a complaint and returns NULL on error. */ | |
757a13d0 | 18460 | |
cf2c3c16 TT |
18461 | static gdb_byte * |
18462 | dwarf_parse_macro_header (gdb_byte **opcode_definitions, | |
18463 | bfd *abfd, | |
18464 | gdb_byte *mac_ptr, | |
18465 | unsigned int *offset_size, | |
18466 | int section_is_gnu) | |
18467 | { | |
18468 | memset (opcode_definitions, 0, 256 * sizeof (gdb_byte *)); | |
757a13d0 | 18469 | |
cf2c3c16 TT |
18470 | if (section_is_gnu) |
18471 | { | |
18472 | unsigned int version, flags; | |
757a13d0 | 18473 | |
cf2c3c16 TT |
18474 | version = read_2_bytes (abfd, mac_ptr); |
18475 | if (version != 4) | |
18476 | { | |
18477 | complaint (&symfile_complaints, | |
18478 | _("unrecognized version `%d' in .debug_macro section"), | |
18479 | version); | |
18480 | return NULL; | |
18481 | } | |
18482 | mac_ptr += 2; | |
757a13d0 | 18483 | |
cf2c3c16 TT |
18484 | flags = read_1_byte (abfd, mac_ptr); |
18485 | ++mac_ptr; | |
18486 | *offset_size = (flags & 1) ? 8 : 4; | |
757a13d0 | 18487 | |
cf2c3c16 TT |
18488 | if ((flags & 2) != 0) |
18489 | /* We don't need the line table offset. */ | |
18490 | mac_ptr += *offset_size; | |
757a13d0 | 18491 | |
cf2c3c16 TT |
18492 | /* Vendor opcode descriptions. */ |
18493 | if ((flags & 4) != 0) | |
18494 | { | |
18495 | unsigned int i, count; | |
757a13d0 | 18496 | |
cf2c3c16 TT |
18497 | count = read_1_byte (abfd, mac_ptr); |
18498 | ++mac_ptr; | |
18499 | for (i = 0; i < count; ++i) | |
18500 | { | |
18501 | unsigned int opcode, bytes_read; | |
18502 | unsigned long arg; | |
18503 | ||
18504 | opcode = read_1_byte (abfd, mac_ptr); | |
18505 | ++mac_ptr; | |
18506 | opcode_definitions[opcode] = mac_ptr; | |
18507 | arg = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
18508 | mac_ptr += bytes_read; | |
18509 | mac_ptr += arg; | |
18510 | } | |
757a13d0 | 18511 | } |
cf2c3c16 | 18512 | } |
757a13d0 | 18513 | |
cf2c3c16 TT |
18514 | return mac_ptr; |
18515 | } | |
757a13d0 | 18516 | |
cf2c3c16 | 18517 | /* A helper for dwarf_decode_macros that handles the GNU extensions, |
8fc3fc34 | 18518 | including DW_MACRO_GNU_transparent_include. */ |
cf2c3c16 TT |
18519 | |
18520 | static void | |
18521 | dwarf_decode_macro_bytes (bfd *abfd, gdb_byte *mac_ptr, gdb_byte *mac_end, | |
18522 | struct macro_source_file *current_file, | |
15d034d0 | 18523 | struct line_header *lh, const char *comp_dir, |
cf2c3c16 | 18524 | struct dwarf2_section_info *section, |
36586728 | 18525 | int section_is_gnu, int section_is_dwz, |
cf2c3c16 | 18526 | unsigned int offset_size, |
8fc3fc34 TT |
18527 | struct objfile *objfile, |
18528 | htab_t include_hash) | |
cf2c3c16 TT |
18529 | { |
18530 | enum dwarf_macro_record_type macinfo_type; | |
18531 | int at_commandline; | |
18532 | gdb_byte *opcode_definitions[256]; | |
757a13d0 | 18533 | |
cf2c3c16 TT |
18534 | mac_ptr = dwarf_parse_macro_header (opcode_definitions, abfd, mac_ptr, |
18535 | &offset_size, section_is_gnu); | |
18536 | if (mac_ptr == NULL) | |
18537 | { | |
18538 | /* We already issued a complaint. */ | |
18539 | return; | |
18540 | } | |
757a13d0 JK |
18541 | |
18542 | /* Determines if GDB is still before first DW_MACINFO_start_file. If true | |
18543 | GDB is still reading the definitions from command line. First | |
18544 | DW_MACINFO_start_file will need to be ignored as it was already executed | |
18545 | to create CURRENT_FILE for the main source holding also the command line | |
18546 | definitions. On first met DW_MACINFO_start_file this flag is reset to | |
18547 | normally execute all the remaining DW_MACINFO_start_file macinfos. */ | |
18548 | ||
18549 | at_commandline = 1; | |
18550 | ||
18551 | do | |
18552 | { | |
18553 | /* Do we at least have room for a macinfo type byte? */ | |
18554 | if (mac_ptr >= mac_end) | |
18555 | { | |
f664829e | 18556 | dwarf2_section_buffer_overflow_complaint (section); |
757a13d0 JK |
18557 | break; |
18558 | } | |
18559 | ||
18560 | macinfo_type = read_1_byte (abfd, mac_ptr); | |
18561 | mac_ptr++; | |
18562 | ||
cf2c3c16 TT |
18563 | /* Note that we rely on the fact that the corresponding GNU and |
18564 | DWARF constants are the same. */ | |
757a13d0 JK |
18565 | switch (macinfo_type) |
18566 | { | |
18567 | /* A zero macinfo type indicates the end of the macro | |
18568 | information. */ | |
18569 | case 0: | |
18570 | break; | |
2e276125 | 18571 | |
cf2c3c16 TT |
18572 | case DW_MACRO_GNU_define: |
18573 | case DW_MACRO_GNU_undef: | |
18574 | case DW_MACRO_GNU_define_indirect: | |
18575 | case DW_MACRO_GNU_undef_indirect: | |
36586728 TT |
18576 | case DW_MACRO_GNU_define_indirect_alt: |
18577 | case DW_MACRO_GNU_undef_indirect_alt: | |
2e276125 | 18578 | { |
891d2f0b | 18579 | unsigned int bytes_read; |
2e276125 JB |
18580 | int line; |
18581 | char *body; | |
cf2c3c16 | 18582 | int is_define; |
2e276125 | 18583 | |
cf2c3c16 TT |
18584 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); |
18585 | mac_ptr += bytes_read; | |
18586 | ||
18587 | if (macinfo_type == DW_MACRO_GNU_define | |
18588 | || macinfo_type == DW_MACRO_GNU_undef) | |
18589 | { | |
18590 | body = read_direct_string (abfd, mac_ptr, &bytes_read); | |
18591 | mac_ptr += bytes_read; | |
18592 | } | |
18593 | else | |
18594 | { | |
18595 | LONGEST str_offset; | |
18596 | ||
18597 | str_offset = read_offset_1 (abfd, mac_ptr, offset_size); | |
18598 | mac_ptr += offset_size; | |
2e276125 | 18599 | |
36586728 | 18600 | if (macinfo_type == DW_MACRO_GNU_define_indirect_alt |
f7a35f02 TT |
18601 | || macinfo_type == DW_MACRO_GNU_undef_indirect_alt |
18602 | || section_is_dwz) | |
36586728 TT |
18603 | { |
18604 | struct dwz_file *dwz = dwarf2_get_dwz_file (); | |
18605 | ||
18606 | body = read_indirect_string_from_dwz (dwz, str_offset); | |
18607 | } | |
18608 | else | |
18609 | body = read_indirect_string_at_offset (abfd, str_offset); | |
cf2c3c16 TT |
18610 | } |
18611 | ||
18612 | is_define = (macinfo_type == DW_MACRO_GNU_define | |
36586728 TT |
18613 | || macinfo_type == DW_MACRO_GNU_define_indirect |
18614 | || macinfo_type == DW_MACRO_GNU_define_indirect_alt); | |
2e276125 | 18615 | if (! current_file) |
757a13d0 JK |
18616 | { |
18617 | /* DWARF violation as no main source is present. */ | |
18618 | complaint (&symfile_complaints, | |
18619 | _("debug info with no main source gives macro %s " | |
18620 | "on line %d: %s"), | |
cf2c3c16 TT |
18621 | is_define ? _("definition") : _("undefinition"), |
18622 | line, body); | |
757a13d0 JK |
18623 | break; |
18624 | } | |
3e43a32a MS |
18625 | if ((line == 0 && !at_commandline) |
18626 | || (line != 0 && at_commandline)) | |
4d3c2250 | 18627 | complaint (&symfile_complaints, |
757a13d0 JK |
18628 | _("debug info gives %s macro %s with %s line %d: %s"), |
18629 | at_commandline ? _("command-line") : _("in-file"), | |
cf2c3c16 | 18630 | is_define ? _("definition") : _("undefinition"), |
757a13d0 JK |
18631 | line == 0 ? _("zero") : _("non-zero"), line, body); |
18632 | ||
cf2c3c16 | 18633 | if (is_define) |
757a13d0 | 18634 | parse_macro_definition (current_file, line, body); |
cf2c3c16 TT |
18635 | else |
18636 | { | |
18637 | gdb_assert (macinfo_type == DW_MACRO_GNU_undef | |
36586728 TT |
18638 | || macinfo_type == DW_MACRO_GNU_undef_indirect |
18639 | || macinfo_type == DW_MACRO_GNU_undef_indirect_alt); | |
cf2c3c16 TT |
18640 | macro_undef (current_file, line, body); |
18641 | } | |
2e276125 JB |
18642 | } |
18643 | break; | |
18644 | ||
cf2c3c16 | 18645 | case DW_MACRO_GNU_start_file: |
2e276125 | 18646 | { |
891d2f0b | 18647 | unsigned int bytes_read; |
2e276125 JB |
18648 | int line, file; |
18649 | ||
18650 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
18651 | mac_ptr += bytes_read; | |
18652 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
18653 | mac_ptr += bytes_read; | |
18654 | ||
3e43a32a MS |
18655 | if ((line == 0 && !at_commandline) |
18656 | || (line != 0 && at_commandline)) | |
757a13d0 JK |
18657 | complaint (&symfile_complaints, |
18658 | _("debug info gives source %d included " | |
18659 | "from %s at %s line %d"), | |
18660 | file, at_commandline ? _("command-line") : _("file"), | |
18661 | line == 0 ? _("zero") : _("non-zero"), line); | |
18662 | ||
18663 | if (at_commandline) | |
18664 | { | |
cf2c3c16 TT |
18665 | /* This DW_MACRO_GNU_start_file was executed in the |
18666 | pass one. */ | |
757a13d0 JK |
18667 | at_commandline = 0; |
18668 | } | |
18669 | else | |
18670 | current_file = macro_start_file (file, line, | |
18671 | current_file, comp_dir, | |
cf2c3c16 | 18672 | lh, objfile); |
2e276125 JB |
18673 | } |
18674 | break; | |
18675 | ||
cf2c3c16 | 18676 | case DW_MACRO_GNU_end_file: |
2e276125 | 18677 | if (! current_file) |
4d3c2250 | 18678 | complaint (&symfile_complaints, |
3e43a32a MS |
18679 | _("macro debug info has an unmatched " |
18680 | "`close_file' directive")); | |
2e276125 JB |
18681 | else |
18682 | { | |
18683 | current_file = current_file->included_by; | |
18684 | if (! current_file) | |
18685 | { | |
cf2c3c16 | 18686 | enum dwarf_macro_record_type next_type; |
2e276125 JB |
18687 | |
18688 | /* GCC circa March 2002 doesn't produce the zero | |
18689 | type byte marking the end of the compilation | |
18690 | unit. Complain if it's not there, but exit no | |
18691 | matter what. */ | |
18692 | ||
18693 | /* Do we at least have room for a macinfo type byte? */ | |
18694 | if (mac_ptr >= mac_end) | |
18695 | { | |
f664829e | 18696 | dwarf2_section_buffer_overflow_complaint (section); |
2e276125 JB |
18697 | return; |
18698 | } | |
18699 | ||
18700 | /* We don't increment mac_ptr here, so this is just | |
18701 | a look-ahead. */ | |
18702 | next_type = read_1_byte (abfd, mac_ptr); | |
18703 | if (next_type != 0) | |
4d3c2250 | 18704 | complaint (&symfile_complaints, |
3e43a32a MS |
18705 | _("no terminating 0-type entry for " |
18706 | "macros in `.debug_macinfo' section")); | |
2e276125 JB |
18707 | |
18708 | return; | |
18709 | } | |
18710 | } | |
18711 | break; | |
18712 | ||
cf2c3c16 | 18713 | case DW_MACRO_GNU_transparent_include: |
36586728 | 18714 | case DW_MACRO_GNU_transparent_include_alt: |
cf2c3c16 TT |
18715 | { |
18716 | LONGEST offset; | |
8fc3fc34 | 18717 | void **slot; |
a036ba48 TT |
18718 | bfd *include_bfd = abfd; |
18719 | struct dwarf2_section_info *include_section = section; | |
18720 | struct dwarf2_section_info alt_section; | |
18721 | gdb_byte *include_mac_end = mac_end; | |
18722 | int is_dwz = section_is_dwz; | |
18723 | gdb_byte *new_mac_ptr; | |
cf2c3c16 TT |
18724 | |
18725 | offset = read_offset_1 (abfd, mac_ptr, offset_size); | |
18726 | mac_ptr += offset_size; | |
18727 | ||
a036ba48 TT |
18728 | if (macinfo_type == DW_MACRO_GNU_transparent_include_alt) |
18729 | { | |
18730 | struct dwz_file *dwz = dwarf2_get_dwz_file (); | |
18731 | ||
18732 | dwarf2_read_section (dwarf2_per_objfile->objfile, | |
18733 | &dwz->macro); | |
18734 | ||
18735 | include_bfd = dwz->macro.asection->owner; | |
18736 | include_section = &dwz->macro; | |
18737 | include_mac_end = dwz->macro.buffer + dwz->macro.size; | |
18738 | is_dwz = 1; | |
18739 | } | |
18740 | ||
18741 | new_mac_ptr = include_section->buffer + offset; | |
18742 | slot = htab_find_slot (include_hash, new_mac_ptr, INSERT); | |
18743 | ||
8fc3fc34 TT |
18744 | if (*slot != NULL) |
18745 | { | |
18746 | /* This has actually happened; see | |
18747 | http://sourceware.org/bugzilla/show_bug.cgi?id=13568. */ | |
18748 | complaint (&symfile_complaints, | |
18749 | _("recursive DW_MACRO_GNU_transparent_include in " | |
18750 | ".debug_macro section")); | |
18751 | } | |
18752 | else | |
18753 | { | |
a036ba48 | 18754 | *slot = new_mac_ptr; |
36586728 | 18755 | |
a036ba48 | 18756 | dwarf_decode_macro_bytes (include_bfd, new_mac_ptr, |
36586728 | 18757 | include_mac_end, current_file, |
8fc3fc34 | 18758 | lh, comp_dir, |
36586728 | 18759 | section, section_is_gnu, is_dwz, |
8fc3fc34 TT |
18760 | offset_size, objfile, include_hash); |
18761 | ||
a036ba48 | 18762 | htab_remove_elt (include_hash, new_mac_ptr); |
8fc3fc34 | 18763 | } |
cf2c3c16 TT |
18764 | } |
18765 | break; | |
18766 | ||
2e276125 | 18767 | case DW_MACINFO_vendor_ext: |
cf2c3c16 TT |
18768 | if (!section_is_gnu) |
18769 | { | |
18770 | unsigned int bytes_read; | |
18771 | int constant; | |
2e276125 | 18772 | |
cf2c3c16 TT |
18773 | constant = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); |
18774 | mac_ptr += bytes_read; | |
18775 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
18776 | mac_ptr += bytes_read; | |
2e276125 | 18777 | |
cf2c3c16 TT |
18778 | /* We don't recognize any vendor extensions. */ |
18779 | break; | |
18780 | } | |
18781 | /* FALLTHROUGH */ | |
18782 | ||
18783 | default: | |
18784 | mac_ptr = skip_unknown_opcode (macinfo_type, opcode_definitions, | |
f664829e | 18785 | mac_ptr, mac_end, abfd, offset_size, |
cf2c3c16 TT |
18786 | section); |
18787 | if (mac_ptr == NULL) | |
18788 | return; | |
18789 | break; | |
2e276125 | 18790 | } |
757a13d0 | 18791 | } while (macinfo_type != 0); |
2e276125 | 18792 | } |
8e19ed76 | 18793 | |
cf2c3c16 | 18794 | static void |
09262596 | 18795 | dwarf_decode_macros (struct dwarf2_cu *cu, unsigned int offset, |
15d034d0 | 18796 | const char *comp_dir, int section_is_gnu) |
cf2c3c16 | 18797 | { |
bb5ed363 | 18798 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
09262596 DE |
18799 | struct line_header *lh = cu->line_header; |
18800 | bfd *abfd; | |
cf2c3c16 TT |
18801 | gdb_byte *mac_ptr, *mac_end; |
18802 | struct macro_source_file *current_file = 0; | |
18803 | enum dwarf_macro_record_type macinfo_type; | |
18804 | unsigned int offset_size = cu->header.offset_size; | |
18805 | gdb_byte *opcode_definitions[256]; | |
8fc3fc34 TT |
18806 | struct cleanup *cleanup; |
18807 | htab_t include_hash; | |
18808 | void **slot; | |
09262596 DE |
18809 | struct dwarf2_section_info *section; |
18810 | const char *section_name; | |
18811 | ||
18812 | if (cu->dwo_unit != NULL) | |
18813 | { | |
18814 | if (section_is_gnu) | |
18815 | { | |
18816 | section = &cu->dwo_unit->dwo_file->sections.macro; | |
18817 | section_name = ".debug_macro.dwo"; | |
18818 | } | |
18819 | else | |
18820 | { | |
18821 | section = &cu->dwo_unit->dwo_file->sections.macinfo; | |
18822 | section_name = ".debug_macinfo.dwo"; | |
18823 | } | |
18824 | } | |
18825 | else | |
18826 | { | |
18827 | if (section_is_gnu) | |
18828 | { | |
18829 | section = &dwarf2_per_objfile->macro; | |
18830 | section_name = ".debug_macro"; | |
18831 | } | |
18832 | else | |
18833 | { | |
18834 | section = &dwarf2_per_objfile->macinfo; | |
18835 | section_name = ".debug_macinfo"; | |
18836 | } | |
18837 | } | |
cf2c3c16 | 18838 | |
bb5ed363 | 18839 | dwarf2_read_section (objfile, section); |
cf2c3c16 TT |
18840 | if (section->buffer == NULL) |
18841 | { | |
fceca515 | 18842 | complaint (&symfile_complaints, _("missing %s section"), section_name); |
cf2c3c16 TT |
18843 | return; |
18844 | } | |
09262596 | 18845 | abfd = section->asection->owner; |
cf2c3c16 TT |
18846 | |
18847 | /* First pass: Find the name of the base filename. | |
18848 | This filename is needed in order to process all macros whose definition | |
18849 | (or undefinition) comes from the command line. These macros are defined | |
18850 | before the first DW_MACINFO_start_file entry, and yet still need to be | |
18851 | associated to the base file. | |
18852 | ||
18853 | To determine the base file name, we scan the macro definitions until we | |
18854 | reach the first DW_MACINFO_start_file entry. We then initialize | |
18855 | CURRENT_FILE accordingly so that any macro definition found before the | |
18856 | first DW_MACINFO_start_file can still be associated to the base file. */ | |
18857 | ||
18858 | mac_ptr = section->buffer + offset; | |
18859 | mac_end = section->buffer + section->size; | |
18860 | ||
18861 | mac_ptr = dwarf_parse_macro_header (opcode_definitions, abfd, mac_ptr, | |
18862 | &offset_size, section_is_gnu); | |
18863 | if (mac_ptr == NULL) | |
18864 | { | |
18865 | /* We already issued a complaint. */ | |
18866 | return; | |
18867 | } | |
18868 | ||
18869 | do | |
18870 | { | |
18871 | /* Do we at least have room for a macinfo type byte? */ | |
18872 | if (mac_ptr >= mac_end) | |
18873 | { | |
18874 | /* Complaint is printed during the second pass as GDB will probably | |
18875 | stop the first pass earlier upon finding | |
18876 | DW_MACINFO_start_file. */ | |
18877 | break; | |
18878 | } | |
18879 | ||
18880 | macinfo_type = read_1_byte (abfd, mac_ptr); | |
18881 | mac_ptr++; | |
18882 | ||
18883 | /* Note that we rely on the fact that the corresponding GNU and | |
18884 | DWARF constants are the same. */ | |
18885 | switch (macinfo_type) | |
18886 | { | |
18887 | /* A zero macinfo type indicates the end of the macro | |
18888 | information. */ | |
18889 | case 0: | |
18890 | break; | |
18891 | ||
18892 | case DW_MACRO_GNU_define: | |
18893 | case DW_MACRO_GNU_undef: | |
18894 | /* Only skip the data by MAC_PTR. */ | |
18895 | { | |
18896 | unsigned int bytes_read; | |
18897 | ||
18898 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
18899 | mac_ptr += bytes_read; | |
18900 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
18901 | mac_ptr += bytes_read; | |
18902 | } | |
18903 | break; | |
18904 | ||
18905 | case DW_MACRO_GNU_start_file: | |
18906 | { | |
18907 | unsigned int bytes_read; | |
18908 | int line, file; | |
18909 | ||
18910 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
18911 | mac_ptr += bytes_read; | |
18912 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
18913 | mac_ptr += bytes_read; | |
18914 | ||
18915 | current_file = macro_start_file (file, line, current_file, | |
bb5ed363 | 18916 | comp_dir, lh, objfile); |
cf2c3c16 TT |
18917 | } |
18918 | break; | |
18919 | ||
18920 | case DW_MACRO_GNU_end_file: | |
18921 | /* No data to skip by MAC_PTR. */ | |
18922 | break; | |
18923 | ||
18924 | case DW_MACRO_GNU_define_indirect: | |
18925 | case DW_MACRO_GNU_undef_indirect: | |
f7a35f02 TT |
18926 | case DW_MACRO_GNU_define_indirect_alt: |
18927 | case DW_MACRO_GNU_undef_indirect_alt: | |
cf2c3c16 TT |
18928 | { |
18929 | unsigned int bytes_read; | |
18930 | ||
18931 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
18932 | mac_ptr += bytes_read; | |
18933 | mac_ptr += offset_size; | |
18934 | } | |
18935 | break; | |
18936 | ||
18937 | case DW_MACRO_GNU_transparent_include: | |
f7a35f02 | 18938 | case DW_MACRO_GNU_transparent_include_alt: |
cf2c3c16 TT |
18939 | /* Note that, according to the spec, a transparent include |
18940 | chain cannot call DW_MACRO_GNU_start_file. So, we can just | |
18941 | skip this opcode. */ | |
18942 | mac_ptr += offset_size; | |
18943 | break; | |
18944 | ||
18945 | case DW_MACINFO_vendor_ext: | |
18946 | /* Only skip the data by MAC_PTR. */ | |
18947 | if (!section_is_gnu) | |
18948 | { | |
18949 | unsigned int bytes_read; | |
18950 | ||
18951 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
18952 | mac_ptr += bytes_read; | |
18953 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
18954 | mac_ptr += bytes_read; | |
18955 | } | |
18956 | /* FALLTHROUGH */ | |
18957 | ||
18958 | default: | |
18959 | mac_ptr = skip_unknown_opcode (macinfo_type, opcode_definitions, | |
f664829e | 18960 | mac_ptr, mac_end, abfd, offset_size, |
cf2c3c16 TT |
18961 | section); |
18962 | if (mac_ptr == NULL) | |
18963 | return; | |
18964 | break; | |
18965 | } | |
18966 | } while (macinfo_type != 0 && current_file == NULL); | |
18967 | ||
18968 | /* Second pass: Process all entries. | |
18969 | ||
18970 | Use the AT_COMMAND_LINE flag to determine whether we are still processing | |
18971 | command-line macro definitions/undefinitions. This flag is unset when we | |
18972 | reach the first DW_MACINFO_start_file entry. */ | |
18973 | ||
8fc3fc34 TT |
18974 | include_hash = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, |
18975 | NULL, xcalloc, xfree); | |
18976 | cleanup = make_cleanup_htab_delete (include_hash); | |
18977 | mac_ptr = section->buffer + offset; | |
18978 | slot = htab_find_slot (include_hash, mac_ptr, INSERT); | |
18979 | *slot = mac_ptr; | |
18980 | dwarf_decode_macro_bytes (abfd, mac_ptr, mac_end, | |
36586728 TT |
18981 | current_file, lh, comp_dir, section, |
18982 | section_is_gnu, 0, | |
8fc3fc34 TT |
18983 | offset_size, objfile, include_hash); |
18984 | do_cleanups (cleanup); | |
cf2c3c16 TT |
18985 | } |
18986 | ||
8e19ed76 | 18987 | /* Check if the attribute's form is a DW_FORM_block* |
0963b4bd | 18988 | if so return true else false. */ |
380bca97 | 18989 | |
8e19ed76 PS |
18990 | static int |
18991 | attr_form_is_block (struct attribute *attr) | |
18992 | { | |
18993 | return (attr == NULL ? 0 : | |
18994 | attr->form == DW_FORM_block1 | |
18995 | || attr->form == DW_FORM_block2 | |
18996 | || attr->form == DW_FORM_block4 | |
2dc7f7b3 TT |
18997 | || attr->form == DW_FORM_block |
18998 | || attr->form == DW_FORM_exprloc); | |
8e19ed76 | 18999 | } |
4c2df51b | 19000 | |
c6a0999f JB |
19001 | /* Return non-zero if ATTR's value is a section offset --- classes |
19002 | lineptr, loclistptr, macptr or rangelistptr --- or zero, otherwise. | |
19003 | You may use DW_UNSND (attr) to retrieve such offsets. | |
19004 | ||
19005 | Section 7.5.4, "Attribute Encodings", explains that no attribute | |
19006 | may have a value that belongs to more than one of these classes; it | |
19007 | would be ambiguous if we did, because we use the same forms for all | |
19008 | of them. */ | |
380bca97 | 19009 | |
3690dd37 JB |
19010 | static int |
19011 | attr_form_is_section_offset (struct attribute *attr) | |
19012 | { | |
19013 | return (attr->form == DW_FORM_data4 | |
2dc7f7b3 TT |
19014 | || attr->form == DW_FORM_data8 |
19015 | || attr->form == DW_FORM_sec_offset); | |
3690dd37 JB |
19016 | } |
19017 | ||
3690dd37 JB |
19018 | /* Return non-zero if ATTR's value falls in the 'constant' class, or |
19019 | zero otherwise. When this function returns true, you can apply | |
19020 | dwarf2_get_attr_constant_value to it. | |
19021 | ||
19022 | However, note that for some attributes you must check | |
19023 | attr_form_is_section_offset before using this test. DW_FORM_data4 | |
19024 | and DW_FORM_data8 are members of both the constant class, and of | |
19025 | the classes that contain offsets into other debug sections | |
19026 | (lineptr, loclistptr, macptr or rangelistptr). The DWARF spec says | |
19027 | that, if an attribute's can be either a constant or one of the | |
19028 | section offset classes, DW_FORM_data4 and DW_FORM_data8 should be | |
19029 | taken as section offsets, not constants. */ | |
380bca97 | 19030 | |
3690dd37 JB |
19031 | static int |
19032 | attr_form_is_constant (struct attribute *attr) | |
19033 | { | |
19034 | switch (attr->form) | |
19035 | { | |
19036 | case DW_FORM_sdata: | |
19037 | case DW_FORM_udata: | |
19038 | case DW_FORM_data1: | |
19039 | case DW_FORM_data2: | |
19040 | case DW_FORM_data4: | |
19041 | case DW_FORM_data8: | |
19042 | return 1; | |
19043 | default: | |
19044 | return 0; | |
19045 | } | |
19046 | } | |
19047 | ||
3019eac3 DE |
19048 | /* Return the .debug_loc section to use for CU. |
19049 | For DWO files use .debug_loc.dwo. */ | |
19050 | ||
19051 | static struct dwarf2_section_info * | |
19052 | cu_debug_loc_section (struct dwarf2_cu *cu) | |
19053 | { | |
19054 | if (cu->dwo_unit) | |
19055 | return &cu->dwo_unit->dwo_file->sections.loc; | |
19056 | return &dwarf2_per_objfile->loc; | |
19057 | } | |
19058 | ||
8cf6f0b1 TT |
19059 | /* A helper function that fills in a dwarf2_loclist_baton. */ |
19060 | ||
19061 | static void | |
19062 | fill_in_loclist_baton (struct dwarf2_cu *cu, | |
19063 | struct dwarf2_loclist_baton *baton, | |
19064 | struct attribute *attr) | |
19065 | { | |
3019eac3 DE |
19066 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
19067 | ||
19068 | dwarf2_read_section (dwarf2_per_objfile->objfile, section); | |
8cf6f0b1 TT |
19069 | |
19070 | baton->per_cu = cu->per_cu; | |
19071 | gdb_assert (baton->per_cu); | |
19072 | /* We don't know how long the location list is, but make sure we | |
19073 | don't run off the edge of the section. */ | |
3019eac3 DE |
19074 | baton->size = section->size - DW_UNSND (attr); |
19075 | baton->data = section->buffer + DW_UNSND (attr); | |
8cf6f0b1 | 19076 | baton->base_address = cu->base_address; |
f664829e | 19077 | baton->from_dwo = cu->dwo_unit != NULL; |
8cf6f0b1 TT |
19078 | } |
19079 | ||
4c2df51b DJ |
19080 | static void |
19081 | dwarf2_symbol_mark_computed (struct attribute *attr, struct symbol *sym, | |
f1e6e072 | 19082 | struct dwarf2_cu *cu, int is_block) |
4c2df51b | 19083 | { |
bb5ed363 | 19084 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3019eac3 | 19085 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
bb5ed363 | 19086 | |
3690dd37 | 19087 | if (attr_form_is_section_offset (attr) |
3019eac3 | 19088 | /* .debug_loc{,.dwo} may not exist at all, or the offset may be outside |
99bcc461 DJ |
19089 | the section. If so, fall through to the complaint in the |
19090 | other branch. */ | |
3019eac3 | 19091 | && DW_UNSND (attr) < dwarf2_section_size (objfile, section)) |
4c2df51b | 19092 | { |
0d53c4c4 | 19093 | struct dwarf2_loclist_baton *baton; |
4c2df51b | 19094 | |
bb5ed363 | 19095 | baton = obstack_alloc (&objfile->objfile_obstack, |
0d53c4c4 | 19096 | sizeof (struct dwarf2_loclist_baton)); |
4c2df51b | 19097 | |
8cf6f0b1 | 19098 | fill_in_loclist_baton (cu, baton, attr); |
be391dca | 19099 | |
d00adf39 | 19100 | if (cu->base_known == 0) |
0d53c4c4 | 19101 | complaint (&symfile_complaints, |
3e43a32a MS |
19102 | _("Location list used without " |
19103 | "specifying the CU base address.")); | |
4c2df51b | 19104 | |
f1e6e072 TT |
19105 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
19106 | ? dwarf2_loclist_block_index | |
19107 | : dwarf2_loclist_index); | |
0d53c4c4 DJ |
19108 | SYMBOL_LOCATION_BATON (sym) = baton; |
19109 | } | |
19110 | else | |
19111 | { | |
19112 | struct dwarf2_locexpr_baton *baton; | |
19113 | ||
bb5ed363 | 19114 | baton = obstack_alloc (&objfile->objfile_obstack, |
0d53c4c4 | 19115 | sizeof (struct dwarf2_locexpr_baton)); |
ae0d2f24 UW |
19116 | baton->per_cu = cu->per_cu; |
19117 | gdb_assert (baton->per_cu); | |
0d53c4c4 DJ |
19118 | |
19119 | if (attr_form_is_block (attr)) | |
19120 | { | |
19121 | /* Note that we're just copying the block's data pointer | |
19122 | here, not the actual data. We're still pointing into the | |
6502dd73 DJ |
19123 | info_buffer for SYM's objfile; right now we never release |
19124 | that buffer, but when we do clean up properly this may | |
19125 | need to change. */ | |
0d53c4c4 DJ |
19126 | baton->size = DW_BLOCK (attr)->size; |
19127 | baton->data = DW_BLOCK (attr)->data; | |
19128 | } | |
19129 | else | |
19130 | { | |
19131 | dwarf2_invalid_attrib_class_complaint ("location description", | |
19132 | SYMBOL_NATURAL_NAME (sym)); | |
19133 | baton->size = 0; | |
0d53c4c4 | 19134 | } |
6e70227d | 19135 | |
f1e6e072 TT |
19136 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
19137 | ? dwarf2_locexpr_block_index | |
19138 | : dwarf2_locexpr_index); | |
0d53c4c4 DJ |
19139 | SYMBOL_LOCATION_BATON (sym) = baton; |
19140 | } | |
4c2df51b | 19141 | } |
6502dd73 | 19142 | |
9aa1f1e3 TT |
19143 | /* Return the OBJFILE associated with the compilation unit CU. If CU |
19144 | came from a separate debuginfo file, then the master objfile is | |
19145 | returned. */ | |
ae0d2f24 UW |
19146 | |
19147 | struct objfile * | |
19148 | dwarf2_per_cu_objfile (struct dwarf2_per_cu_data *per_cu) | |
19149 | { | |
9291a0cd | 19150 | struct objfile *objfile = per_cu->objfile; |
ae0d2f24 UW |
19151 | |
19152 | /* Return the master objfile, so that we can report and look up the | |
19153 | correct file containing this variable. */ | |
19154 | if (objfile->separate_debug_objfile_backlink) | |
19155 | objfile = objfile->separate_debug_objfile_backlink; | |
19156 | ||
19157 | return objfile; | |
19158 | } | |
19159 | ||
96408a79 SA |
19160 | /* Return comp_unit_head for PER_CU, either already available in PER_CU->CU |
19161 | (CU_HEADERP is unused in such case) or prepare a temporary copy at | |
19162 | CU_HEADERP first. */ | |
19163 | ||
19164 | static const struct comp_unit_head * | |
19165 | per_cu_header_read_in (struct comp_unit_head *cu_headerp, | |
19166 | struct dwarf2_per_cu_data *per_cu) | |
19167 | { | |
96408a79 SA |
19168 | gdb_byte *info_ptr; |
19169 | ||
19170 | if (per_cu->cu) | |
19171 | return &per_cu->cu->header; | |
19172 | ||
8a0459fd | 19173 | info_ptr = per_cu->section->buffer + per_cu->offset.sect_off; |
96408a79 SA |
19174 | |
19175 | memset (cu_headerp, 0, sizeof (*cu_headerp)); | |
0bc3a05c | 19176 | read_comp_unit_head (cu_headerp, info_ptr, per_cu->objfile->obfd); |
96408a79 SA |
19177 | |
19178 | return cu_headerp; | |
19179 | } | |
19180 | ||
ae0d2f24 UW |
19181 | /* Return the address size given in the compilation unit header for CU. */ |
19182 | ||
98714339 | 19183 | int |
ae0d2f24 UW |
19184 | dwarf2_per_cu_addr_size (struct dwarf2_per_cu_data *per_cu) |
19185 | { | |
96408a79 SA |
19186 | struct comp_unit_head cu_header_local; |
19187 | const struct comp_unit_head *cu_headerp; | |
c471e790 | 19188 | |
96408a79 SA |
19189 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); |
19190 | ||
19191 | return cu_headerp->addr_size; | |
ae0d2f24 UW |
19192 | } |
19193 | ||
9eae7c52 TT |
19194 | /* Return the offset size given in the compilation unit header for CU. */ |
19195 | ||
19196 | int | |
19197 | dwarf2_per_cu_offset_size (struct dwarf2_per_cu_data *per_cu) | |
19198 | { | |
96408a79 SA |
19199 | struct comp_unit_head cu_header_local; |
19200 | const struct comp_unit_head *cu_headerp; | |
9c6c53f7 | 19201 | |
96408a79 SA |
19202 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); |
19203 | ||
19204 | return cu_headerp->offset_size; | |
19205 | } | |
19206 | ||
19207 | /* See its dwarf2loc.h declaration. */ | |
19208 | ||
19209 | int | |
19210 | dwarf2_per_cu_ref_addr_size (struct dwarf2_per_cu_data *per_cu) | |
19211 | { | |
19212 | struct comp_unit_head cu_header_local; | |
19213 | const struct comp_unit_head *cu_headerp; | |
19214 | ||
19215 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); | |
19216 | ||
19217 | if (cu_headerp->version == 2) | |
19218 | return cu_headerp->addr_size; | |
19219 | else | |
19220 | return cu_headerp->offset_size; | |
181cebd4 JK |
19221 | } |
19222 | ||
9aa1f1e3 TT |
19223 | /* Return the text offset of the CU. The returned offset comes from |
19224 | this CU's objfile. If this objfile came from a separate debuginfo | |
19225 | file, then the offset may be different from the corresponding | |
19226 | offset in the parent objfile. */ | |
19227 | ||
19228 | CORE_ADDR | |
19229 | dwarf2_per_cu_text_offset (struct dwarf2_per_cu_data *per_cu) | |
19230 | { | |
bb3fa9d0 | 19231 | struct objfile *objfile = per_cu->objfile; |
9aa1f1e3 TT |
19232 | |
19233 | return ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
19234 | } | |
19235 | ||
348e048f DE |
19236 | /* Locate the .debug_info compilation unit from CU's objfile which contains |
19237 | the DIE at OFFSET. Raises an error on failure. */ | |
ae038cb0 DJ |
19238 | |
19239 | static struct dwarf2_per_cu_data * | |
b64f50a1 | 19240 | dwarf2_find_containing_comp_unit (sect_offset offset, |
36586728 | 19241 | unsigned int offset_in_dwz, |
ae038cb0 DJ |
19242 | struct objfile *objfile) |
19243 | { | |
19244 | struct dwarf2_per_cu_data *this_cu; | |
19245 | int low, high; | |
36586728 | 19246 | const sect_offset *cu_off; |
ae038cb0 | 19247 | |
ae038cb0 DJ |
19248 | low = 0; |
19249 | high = dwarf2_per_objfile->n_comp_units - 1; | |
19250 | while (high > low) | |
19251 | { | |
36586728 | 19252 | struct dwarf2_per_cu_data *mid_cu; |
ae038cb0 | 19253 | int mid = low + (high - low) / 2; |
9a619af0 | 19254 | |
36586728 TT |
19255 | mid_cu = dwarf2_per_objfile->all_comp_units[mid]; |
19256 | cu_off = &mid_cu->offset; | |
19257 | if (mid_cu->is_dwz > offset_in_dwz | |
19258 | || (mid_cu->is_dwz == offset_in_dwz | |
19259 | && cu_off->sect_off >= offset.sect_off)) | |
ae038cb0 DJ |
19260 | high = mid; |
19261 | else | |
19262 | low = mid + 1; | |
19263 | } | |
19264 | gdb_assert (low == high); | |
36586728 TT |
19265 | this_cu = dwarf2_per_objfile->all_comp_units[low]; |
19266 | cu_off = &this_cu->offset; | |
19267 | if (this_cu->is_dwz != offset_in_dwz || cu_off->sect_off > offset.sect_off) | |
ae038cb0 | 19268 | { |
36586728 | 19269 | if (low == 0 || this_cu->is_dwz != offset_in_dwz) |
8a3fe4f8 AC |
19270 | error (_("Dwarf Error: could not find partial DIE containing " |
19271 | "offset 0x%lx [in module %s]"), | |
b64f50a1 | 19272 | (long) offset.sect_off, bfd_get_filename (objfile->obfd)); |
10b3939b | 19273 | |
b64f50a1 JK |
19274 | gdb_assert (dwarf2_per_objfile->all_comp_units[low-1]->offset.sect_off |
19275 | <= offset.sect_off); | |
ae038cb0 DJ |
19276 | return dwarf2_per_objfile->all_comp_units[low-1]; |
19277 | } | |
19278 | else | |
19279 | { | |
19280 | this_cu = dwarf2_per_objfile->all_comp_units[low]; | |
19281 | if (low == dwarf2_per_objfile->n_comp_units - 1 | |
b64f50a1 JK |
19282 | && offset.sect_off >= this_cu->offset.sect_off + this_cu->length) |
19283 | error (_("invalid dwarf2 offset %u"), offset.sect_off); | |
19284 | gdb_assert (offset.sect_off < this_cu->offset.sect_off + this_cu->length); | |
ae038cb0 DJ |
19285 | return this_cu; |
19286 | } | |
19287 | } | |
19288 | ||
23745b47 | 19289 | /* Initialize dwarf2_cu CU, owned by PER_CU. */ |
93311388 | 19290 | |
9816fde3 | 19291 | static void |
23745b47 | 19292 | init_one_comp_unit (struct dwarf2_cu *cu, struct dwarf2_per_cu_data *per_cu) |
93311388 | 19293 | { |
9816fde3 | 19294 | memset (cu, 0, sizeof (*cu)); |
23745b47 DE |
19295 | per_cu->cu = cu; |
19296 | cu->per_cu = per_cu; | |
19297 | cu->objfile = per_cu->objfile; | |
93311388 | 19298 | obstack_init (&cu->comp_unit_obstack); |
9816fde3 JK |
19299 | } |
19300 | ||
19301 | /* Initialize basic fields of dwarf_cu CU according to DIE COMP_UNIT_DIE. */ | |
19302 | ||
19303 | static void | |
95554aad TT |
19304 | prepare_one_comp_unit (struct dwarf2_cu *cu, struct die_info *comp_unit_die, |
19305 | enum language pretend_language) | |
9816fde3 JK |
19306 | { |
19307 | struct attribute *attr; | |
19308 | ||
19309 | /* Set the language we're debugging. */ | |
19310 | attr = dwarf2_attr (comp_unit_die, DW_AT_language, cu); | |
19311 | if (attr) | |
19312 | set_cu_language (DW_UNSND (attr), cu); | |
19313 | else | |
9cded63f | 19314 | { |
95554aad | 19315 | cu->language = pretend_language; |
9cded63f TT |
19316 | cu->language_defn = language_def (cu->language); |
19317 | } | |
dee91e82 DE |
19318 | |
19319 | attr = dwarf2_attr (comp_unit_die, DW_AT_producer, cu); | |
19320 | if (attr) | |
19321 | cu->producer = DW_STRING (attr); | |
93311388 DE |
19322 | } |
19323 | ||
ae038cb0 DJ |
19324 | /* Release one cached compilation unit, CU. We unlink it from the tree |
19325 | of compilation units, but we don't remove it from the read_in_chain; | |
93311388 DE |
19326 | the caller is responsible for that. |
19327 | NOTE: DATA is a void * because this function is also used as a | |
19328 | cleanup routine. */ | |
ae038cb0 DJ |
19329 | |
19330 | static void | |
68dc6402 | 19331 | free_heap_comp_unit (void *data) |
ae038cb0 DJ |
19332 | { |
19333 | struct dwarf2_cu *cu = data; | |
19334 | ||
23745b47 DE |
19335 | gdb_assert (cu->per_cu != NULL); |
19336 | cu->per_cu->cu = NULL; | |
ae038cb0 DJ |
19337 | cu->per_cu = NULL; |
19338 | ||
19339 | obstack_free (&cu->comp_unit_obstack, NULL); | |
19340 | ||
19341 | xfree (cu); | |
19342 | } | |
19343 | ||
72bf9492 | 19344 | /* This cleanup function is passed the address of a dwarf2_cu on the stack |
ae038cb0 | 19345 | when we're finished with it. We can't free the pointer itself, but be |
dee91e82 | 19346 | sure to unlink it from the cache. Also release any associated storage. */ |
72bf9492 DJ |
19347 | |
19348 | static void | |
19349 | free_stack_comp_unit (void *data) | |
19350 | { | |
19351 | struct dwarf2_cu *cu = data; | |
19352 | ||
23745b47 DE |
19353 | gdb_assert (cu->per_cu != NULL); |
19354 | cu->per_cu->cu = NULL; | |
19355 | cu->per_cu = NULL; | |
19356 | ||
72bf9492 DJ |
19357 | obstack_free (&cu->comp_unit_obstack, NULL); |
19358 | cu->partial_dies = NULL; | |
ae038cb0 DJ |
19359 | } |
19360 | ||
19361 | /* Free all cached compilation units. */ | |
19362 | ||
19363 | static void | |
19364 | free_cached_comp_units (void *data) | |
19365 | { | |
19366 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
19367 | ||
19368 | per_cu = dwarf2_per_objfile->read_in_chain; | |
19369 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
19370 | while (per_cu != NULL) | |
19371 | { | |
19372 | struct dwarf2_per_cu_data *next_cu; | |
19373 | ||
19374 | next_cu = per_cu->cu->read_in_chain; | |
19375 | ||
68dc6402 | 19376 | free_heap_comp_unit (per_cu->cu); |
ae038cb0 DJ |
19377 | *last_chain = next_cu; |
19378 | ||
19379 | per_cu = next_cu; | |
19380 | } | |
19381 | } | |
19382 | ||
19383 | /* Increase the age counter on each cached compilation unit, and free | |
19384 | any that are too old. */ | |
19385 | ||
19386 | static void | |
19387 | age_cached_comp_units (void) | |
19388 | { | |
19389 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
19390 | ||
19391 | dwarf2_clear_marks (dwarf2_per_objfile->read_in_chain); | |
19392 | per_cu = dwarf2_per_objfile->read_in_chain; | |
19393 | while (per_cu != NULL) | |
19394 | { | |
19395 | per_cu->cu->last_used ++; | |
19396 | if (per_cu->cu->last_used <= dwarf2_max_cache_age) | |
19397 | dwarf2_mark (per_cu->cu); | |
19398 | per_cu = per_cu->cu->read_in_chain; | |
19399 | } | |
19400 | ||
19401 | per_cu = dwarf2_per_objfile->read_in_chain; | |
19402 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
19403 | while (per_cu != NULL) | |
19404 | { | |
19405 | struct dwarf2_per_cu_data *next_cu; | |
19406 | ||
19407 | next_cu = per_cu->cu->read_in_chain; | |
19408 | ||
19409 | if (!per_cu->cu->mark) | |
19410 | { | |
68dc6402 | 19411 | free_heap_comp_unit (per_cu->cu); |
ae038cb0 DJ |
19412 | *last_chain = next_cu; |
19413 | } | |
19414 | else | |
19415 | last_chain = &per_cu->cu->read_in_chain; | |
19416 | ||
19417 | per_cu = next_cu; | |
19418 | } | |
19419 | } | |
19420 | ||
19421 | /* Remove a single compilation unit from the cache. */ | |
19422 | ||
19423 | static void | |
dee91e82 | 19424 | free_one_cached_comp_unit (struct dwarf2_per_cu_data *target_per_cu) |
ae038cb0 DJ |
19425 | { |
19426 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
19427 | ||
19428 | per_cu = dwarf2_per_objfile->read_in_chain; | |
19429 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
19430 | while (per_cu != NULL) | |
19431 | { | |
19432 | struct dwarf2_per_cu_data *next_cu; | |
19433 | ||
19434 | next_cu = per_cu->cu->read_in_chain; | |
19435 | ||
dee91e82 | 19436 | if (per_cu == target_per_cu) |
ae038cb0 | 19437 | { |
68dc6402 | 19438 | free_heap_comp_unit (per_cu->cu); |
dee91e82 | 19439 | per_cu->cu = NULL; |
ae038cb0 DJ |
19440 | *last_chain = next_cu; |
19441 | break; | |
19442 | } | |
19443 | else | |
19444 | last_chain = &per_cu->cu->read_in_chain; | |
19445 | ||
19446 | per_cu = next_cu; | |
19447 | } | |
19448 | } | |
19449 | ||
fe3e1990 DJ |
19450 | /* Release all extra memory associated with OBJFILE. */ |
19451 | ||
19452 | void | |
19453 | dwarf2_free_objfile (struct objfile *objfile) | |
19454 | { | |
19455 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); | |
19456 | ||
19457 | if (dwarf2_per_objfile == NULL) | |
19458 | return; | |
19459 | ||
19460 | /* Cached DIE trees use xmalloc and the comp_unit_obstack. */ | |
19461 | free_cached_comp_units (NULL); | |
19462 | ||
7b9f3c50 DE |
19463 | if (dwarf2_per_objfile->quick_file_names_table) |
19464 | htab_delete (dwarf2_per_objfile->quick_file_names_table); | |
9291a0cd | 19465 | |
fe3e1990 DJ |
19466 | /* Everything else should be on the objfile obstack. */ |
19467 | } | |
19468 | ||
dee91e82 DE |
19469 | /* A set of CU "per_cu" pointer, DIE offset, and GDB type pointer. |
19470 | We store these in a hash table separate from the DIEs, and preserve them | |
19471 | when the DIEs are flushed out of cache. | |
19472 | ||
19473 | The CU "per_cu" pointer is needed because offset alone is not enough to | |
3019eac3 DE |
19474 | uniquely identify the type. A file may have multiple .debug_types sections, |
19475 | or the type may come from a DWO file. We have to use something in | |
19476 | dwarf2_per_cu_data (or the pointer to it) because we can enter the lookup | |
19477 | routine, get_die_type_at_offset, from outside this file, and thus won't | |
19478 | necessarily have PER_CU->cu. Fortunately, PER_CU is stable for the life | |
19479 | of the objfile. */ | |
1c379e20 | 19480 | |
dee91e82 | 19481 | struct dwarf2_per_cu_offset_and_type |
1c379e20 | 19482 | { |
dee91e82 | 19483 | const struct dwarf2_per_cu_data *per_cu; |
b64f50a1 | 19484 | sect_offset offset; |
1c379e20 DJ |
19485 | struct type *type; |
19486 | }; | |
19487 | ||
dee91e82 | 19488 | /* Hash function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
19489 | |
19490 | static hashval_t | |
dee91e82 | 19491 | per_cu_offset_and_type_hash (const void *item) |
1c379e20 | 19492 | { |
dee91e82 | 19493 | const struct dwarf2_per_cu_offset_and_type *ofs = item; |
9a619af0 | 19494 | |
dee91e82 | 19495 | return (uintptr_t) ofs->per_cu + ofs->offset.sect_off; |
1c379e20 DJ |
19496 | } |
19497 | ||
dee91e82 | 19498 | /* Equality function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
19499 | |
19500 | static int | |
dee91e82 | 19501 | per_cu_offset_and_type_eq (const void *item_lhs, const void *item_rhs) |
1c379e20 | 19502 | { |
dee91e82 DE |
19503 | const struct dwarf2_per_cu_offset_and_type *ofs_lhs = item_lhs; |
19504 | const struct dwarf2_per_cu_offset_and_type *ofs_rhs = item_rhs; | |
9a619af0 | 19505 | |
dee91e82 DE |
19506 | return (ofs_lhs->per_cu == ofs_rhs->per_cu |
19507 | && ofs_lhs->offset.sect_off == ofs_rhs->offset.sect_off); | |
1c379e20 DJ |
19508 | } |
19509 | ||
19510 | /* Set the type associated with DIE to TYPE. Save it in CU's hash | |
7e314c57 JK |
19511 | table if necessary. For convenience, return TYPE. |
19512 | ||
19513 | The DIEs reading must have careful ordering to: | |
19514 | * Not cause infite loops trying to read in DIEs as a prerequisite for | |
19515 | reading current DIE. | |
19516 | * Not trying to dereference contents of still incompletely read in types | |
19517 | while reading in other DIEs. | |
19518 | * Enable referencing still incompletely read in types just by a pointer to | |
19519 | the type without accessing its fields. | |
19520 | ||
19521 | Therefore caller should follow these rules: | |
19522 | * Try to fetch any prerequisite types we may need to build this DIE type | |
19523 | before building the type and calling set_die_type. | |
e71ec853 | 19524 | * After building type call set_die_type for current DIE as soon as |
7e314c57 JK |
19525 | possible before fetching more types to complete the current type. |
19526 | * Make the type as complete as possible before fetching more types. */ | |
1c379e20 | 19527 | |
f792889a | 19528 | static struct type * |
1c379e20 DJ |
19529 | set_die_type (struct die_info *die, struct type *type, struct dwarf2_cu *cu) |
19530 | { | |
dee91e82 | 19531 | struct dwarf2_per_cu_offset_and_type **slot, ofs; |
673bfd45 | 19532 | struct objfile *objfile = cu->objfile; |
1c379e20 | 19533 | |
b4ba55a1 JB |
19534 | /* For Ada types, make sure that the gnat-specific data is always |
19535 | initialized (if not already set). There are a few types where | |
19536 | we should not be doing so, because the type-specific area is | |
19537 | already used to hold some other piece of info (eg: TYPE_CODE_FLT | |
19538 | where the type-specific area is used to store the floatformat). | |
19539 | But this is not a problem, because the gnat-specific information | |
19540 | is actually not needed for these types. */ | |
19541 | if (need_gnat_info (cu) | |
19542 | && TYPE_CODE (type) != TYPE_CODE_FUNC | |
19543 | && TYPE_CODE (type) != TYPE_CODE_FLT | |
19544 | && !HAVE_GNAT_AUX_INFO (type)) | |
19545 | INIT_GNAT_SPECIFIC (type); | |
19546 | ||
dee91e82 | 19547 | if (dwarf2_per_objfile->die_type_hash == NULL) |
f792889a | 19548 | { |
dee91e82 DE |
19549 | dwarf2_per_objfile->die_type_hash = |
19550 | htab_create_alloc_ex (127, | |
19551 | per_cu_offset_and_type_hash, | |
19552 | per_cu_offset_and_type_eq, | |
19553 | NULL, | |
19554 | &objfile->objfile_obstack, | |
19555 | hashtab_obstack_allocate, | |
19556 | dummy_obstack_deallocate); | |
f792889a | 19557 | } |
1c379e20 | 19558 | |
dee91e82 | 19559 | ofs.per_cu = cu->per_cu; |
1c379e20 DJ |
19560 | ofs.offset = die->offset; |
19561 | ofs.type = type; | |
dee91e82 DE |
19562 | slot = (struct dwarf2_per_cu_offset_and_type **) |
19563 | htab_find_slot (dwarf2_per_objfile->die_type_hash, &ofs, INSERT); | |
7e314c57 JK |
19564 | if (*slot) |
19565 | complaint (&symfile_complaints, | |
19566 | _("A problem internal to GDB: DIE 0x%x has type already set"), | |
b64f50a1 | 19567 | die->offset.sect_off); |
673bfd45 | 19568 | *slot = obstack_alloc (&objfile->objfile_obstack, sizeof (**slot)); |
1c379e20 | 19569 | **slot = ofs; |
f792889a | 19570 | return type; |
1c379e20 DJ |
19571 | } |
19572 | ||
380bca97 | 19573 | /* Look up the type for the die at OFFSET in the appropriate type_hash |
673bfd45 | 19574 | table, or return NULL if the die does not have a saved type. */ |
1c379e20 DJ |
19575 | |
19576 | static struct type * | |
b64f50a1 | 19577 | get_die_type_at_offset (sect_offset offset, |
673bfd45 | 19578 | struct dwarf2_per_cu_data *per_cu) |
1c379e20 | 19579 | { |
dee91e82 | 19580 | struct dwarf2_per_cu_offset_and_type *slot, ofs; |
f792889a | 19581 | |
dee91e82 | 19582 | if (dwarf2_per_objfile->die_type_hash == NULL) |
f792889a | 19583 | return NULL; |
1c379e20 | 19584 | |
dee91e82 | 19585 | ofs.per_cu = per_cu; |
673bfd45 | 19586 | ofs.offset = offset; |
dee91e82 | 19587 | slot = htab_find (dwarf2_per_objfile->die_type_hash, &ofs); |
1c379e20 DJ |
19588 | if (slot) |
19589 | return slot->type; | |
19590 | else | |
19591 | return NULL; | |
19592 | } | |
19593 | ||
673bfd45 DE |
19594 | /* Look up the type for DIE in the appropriate type_hash table, |
19595 | or return NULL if DIE does not have a saved type. */ | |
19596 | ||
19597 | static struct type * | |
19598 | get_die_type (struct die_info *die, struct dwarf2_cu *cu) | |
19599 | { | |
19600 | return get_die_type_at_offset (die->offset, cu->per_cu); | |
19601 | } | |
19602 | ||
10b3939b DJ |
19603 | /* Add a dependence relationship from CU to REF_PER_CU. */ |
19604 | ||
19605 | static void | |
19606 | dwarf2_add_dependence (struct dwarf2_cu *cu, | |
19607 | struct dwarf2_per_cu_data *ref_per_cu) | |
19608 | { | |
19609 | void **slot; | |
19610 | ||
19611 | if (cu->dependencies == NULL) | |
19612 | cu->dependencies | |
19613 | = htab_create_alloc_ex (5, htab_hash_pointer, htab_eq_pointer, | |
19614 | NULL, &cu->comp_unit_obstack, | |
19615 | hashtab_obstack_allocate, | |
19616 | dummy_obstack_deallocate); | |
19617 | ||
19618 | slot = htab_find_slot (cu->dependencies, ref_per_cu, INSERT); | |
19619 | if (*slot == NULL) | |
19620 | *slot = ref_per_cu; | |
19621 | } | |
1c379e20 | 19622 | |
f504f079 DE |
19623 | /* Subroutine of dwarf2_mark to pass to htab_traverse. |
19624 | Set the mark field in every compilation unit in the | |
ae038cb0 DJ |
19625 | cache that we must keep because we are keeping CU. */ |
19626 | ||
10b3939b DJ |
19627 | static int |
19628 | dwarf2_mark_helper (void **slot, void *data) | |
19629 | { | |
19630 | struct dwarf2_per_cu_data *per_cu; | |
19631 | ||
19632 | per_cu = (struct dwarf2_per_cu_data *) *slot; | |
d07ed419 JK |
19633 | |
19634 | /* cu->dependencies references may not yet have been ever read if QUIT aborts | |
19635 | reading of the chain. As such dependencies remain valid it is not much | |
19636 | useful to track and undo them during QUIT cleanups. */ | |
19637 | if (per_cu->cu == NULL) | |
19638 | return 1; | |
19639 | ||
10b3939b DJ |
19640 | if (per_cu->cu->mark) |
19641 | return 1; | |
19642 | per_cu->cu->mark = 1; | |
19643 | ||
19644 | if (per_cu->cu->dependencies != NULL) | |
19645 | htab_traverse (per_cu->cu->dependencies, dwarf2_mark_helper, NULL); | |
19646 | ||
19647 | return 1; | |
19648 | } | |
19649 | ||
f504f079 DE |
19650 | /* Set the mark field in CU and in every other compilation unit in the |
19651 | cache that we must keep because we are keeping CU. */ | |
19652 | ||
ae038cb0 DJ |
19653 | static void |
19654 | dwarf2_mark (struct dwarf2_cu *cu) | |
19655 | { | |
19656 | if (cu->mark) | |
19657 | return; | |
19658 | cu->mark = 1; | |
10b3939b DJ |
19659 | if (cu->dependencies != NULL) |
19660 | htab_traverse (cu->dependencies, dwarf2_mark_helper, NULL); | |
ae038cb0 DJ |
19661 | } |
19662 | ||
19663 | static void | |
19664 | dwarf2_clear_marks (struct dwarf2_per_cu_data *per_cu) | |
19665 | { | |
19666 | while (per_cu) | |
19667 | { | |
19668 | per_cu->cu->mark = 0; | |
19669 | per_cu = per_cu->cu->read_in_chain; | |
19670 | } | |
72bf9492 DJ |
19671 | } |
19672 | ||
72bf9492 DJ |
19673 | /* Trivial hash function for partial_die_info: the hash value of a DIE |
19674 | is its offset in .debug_info for this objfile. */ | |
19675 | ||
19676 | static hashval_t | |
19677 | partial_die_hash (const void *item) | |
19678 | { | |
19679 | const struct partial_die_info *part_die = item; | |
9a619af0 | 19680 | |
b64f50a1 | 19681 | return part_die->offset.sect_off; |
72bf9492 DJ |
19682 | } |
19683 | ||
19684 | /* Trivial comparison function for partial_die_info structures: two DIEs | |
19685 | are equal if they have the same offset. */ | |
19686 | ||
19687 | static int | |
19688 | partial_die_eq (const void *item_lhs, const void *item_rhs) | |
19689 | { | |
19690 | const struct partial_die_info *part_die_lhs = item_lhs; | |
19691 | const struct partial_die_info *part_die_rhs = item_rhs; | |
9a619af0 | 19692 | |
b64f50a1 | 19693 | return part_die_lhs->offset.sect_off == part_die_rhs->offset.sect_off; |
72bf9492 DJ |
19694 | } |
19695 | ||
ae038cb0 DJ |
19696 | static struct cmd_list_element *set_dwarf2_cmdlist; |
19697 | static struct cmd_list_element *show_dwarf2_cmdlist; | |
19698 | ||
19699 | static void | |
19700 | set_dwarf2_cmd (char *args, int from_tty) | |
19701 | { | |
19702 | help_list (set_dwarf2_cmdlist, "maintenance set dwarf2 ", -1, gdb_stdout); | |
19703 | } | |
19704 | ||
19705 | static void | |
19706 | show_dwarf2_cmd (char *args, int from_tty) | |
6e70227d | 19707 | { |
ae038cb0 DJ |
19708 | cmd_show_list (show_dwarf2_cmdlist, from_tty, ""); |
19709 | } | |
19710 | ||
4bf44c1c | 19711 | /* Free data associated with OBJFILE, if necessary. */ |
dce234bc PP |
19712 | |
19713 | static void | |
c1bd65d0 | 19714 | dwarf2_per_objfile_free (struct objfile *objfile, void *d) |
dce234bc PP |
19715 | { |
19716 | struct dwarf2_per_objfile *data = d; | |
8b70b953 | 19717 | int ix; |
8b70b953 | 19718 | |
95554aad TT |
19719 | for (ix = 0; ix < dwarf2_per_objfile->n_comp_units; ++ix) |
19720 | VEC_free (dwarf2_per_cu_ptr, | |
796a7ff8 DE |
19721 | dwarf2_per_objfile->all_comp_units[ix]->imported_symtabs); |
19722 | ||
19723 | for (ix = 0; ix < dwarf2_per_objfile->n_type_units; ++ix) | |
19724 | VEC_free (dwarf2_per_cu_ptr, | |
19725 | dwarf2_per_objfile->all_type_units[ix]->per_cu.imported_symtabs); | |
95554aad | 19726 | |
8b70b953 | 19727 | VEC_free (dwarf2_section_info_def, data->types); |
3019eac3 DE |
19728 | |
19729 | if (data->dwo_files) | |
19730 | free_dwo_files (data->dwo_files, objfile); | |
36586728 TT |
19731 | |
19732 | if (data->dwz_file && data->dwz_file->dwz_bfd) | |
19733 | gdb_bfd_unref (data->dwz_file->dwz_bfd); | |
9291a0cd TT |
19734 | } |
19735 | ||
19736 | \f | |
ae2de4f8 | 19737 | /* The "save gdb-index" command. */ |
9291a0cd TT |
19738 | |
19739 | /* The contents of the hash table we create when building the string | |
19740 | table. */ | |
19741 | struct strtab_entry | |
19742 | { | |
19743 | offset_type offset; | |
19744 | const char *str; | |
19745 | }; | |
19746 | ||
559a7a62 JK |
19747 | /* Hash function for a strtab_entry. |
19748 | ||
19749 | Function is used only during write_hash_table so no index format backward | |
19750 | compatibility is needed. */ | |
b89be57b | 19751 | |
9291a0cd TT |
19752 | static hashval_t |
19753 | hash_strtab_entry (const void *e) | |
19754 | { | |
19755 | const struct strtab_entry *entry = e; | |
559a7a62 | 19756 | return mapped_index_string_hash (INT_MAX, entry->str); |
9291a0cd TT |
19757 | } |
19758 | ||
19759 | /* Equality function for a strtab_entry. */ | |
b89be57b | 19760 | |
9291a0cd TT |
19761 | static int |
19762 | eq_strtab_entry (const void *a, const void *b) | |
19763 | { | |
19764 | const struct strtab_entry *ea = a; | |
19765 | const struct strtab_entry *eb = b; | |
19766 | return !strcmp (ea->str, eb->str); | |
19767 | } | |
19768 | ||
19769 | /* Create a strtab_entry hash table. */ | |
b89be57b | 19770 | |
9291a0cd TT |
19771 | static htab_t |
19772 | create_strtab (void) | |
19773 | { | |
19774 | return htab_create_alloc (100, hash_strtab_entry, eq_strtab_entry, | |
19775 | xfree, xcalloc, xfree); | |
19776 | } | |
19777 | ||
19778 | /* Add a string to the constant pool. Return the string's offset in | |
19779 | host order. */ | |
b89be57b | 19780 | |
9291a0cd TT |
19781 | static offset_type |
19782 | add_string (htab_t table, struct obstack *cpool, const char *str) | |
19783 | { | |
19784 | void **slot; | |
19785 | struct strtab_entry entry; | |
19786 | struct strtab_entry *result; | |
19787 | ||
19788 | entry.str = str; | |
19789 | slot = htab_find_slot (table, &entry, INSERT); | |
19790 | if (*slot) | |
19791 | result = *slot; | |
19792 | else | |
19793 | { | |
19794 | result = XNEW (struct strtab_entry); | |
19795 | result->offset = obstack_object_size (cpool); | |
19796 | result->str = str; | |
19797 | obstack_grow_str0 (cpool, str); | |
19798 | *slot = result; | |
19799 | } | |
19800 | return result->offset; | |
19801 | } | |
19802 | ||
19803 | /* An entry in the symbol table. */ | |
19804 | struct symtab_index_entry | |
19805 | { | |
19806 | /* The name of the symbol. */ | |
19807 | const char *name; | |
19808 | /* The offset of the name in the constant pool. */ | |
19809 | offset_type index_offset; | |
19810 | /* A sorted vector of the indices of all the CUs that hold an object | |
19811 | of this name. */ | |
19812 | VEC (offset_type) *cu_indices; | |
19813 | }; | |
19814 | ||
19815 | /* The symbol table. This is a power-of-2-sized hash table. */ | |
19816 | struct mapped_symtab | |
19817 | { | |
19818 | offset_type n_elements; | |
19819 | offset_type size; | |
19820 | struct symtab_index_entry **data; | |
19821 | }; | |
19822 | ||
19823 | /* Hash function for a symtab_index_entry. */ | |
b89be57b | 19824 | |
9291a0cd TT |
19825 | static hashval_t |
19826 | hash_symtab_entry (const void *e) | |
19827 | { | |
19828 | const struct symtab_index_entry *entry = e; | |
19829 | return iterative_hash (VEC_address (offset_type, entry->cu_indices), | |
19830 | sizeof (offset_type) * VEC_length (offset_type, | |
19831 | entry->cu_indices), | |
19832 | 0); | |
19833 | } | |
19834 | ||
19835 | /* Equality function for a symtab_index_entry. */ | |
b89be57b | 19836 | |
9291a0cd TT |
19837 | static int |
19838 | eq_symtab_entry (const void *a, const void *b) | |
19839 | { | |
19840 | const struct symtab_index_entry *ea = a; | |
19841 | const struct symtab_index_entry *eb = b; | |
19842 | int len = VEC_length (offset_type, ea->cu_indices); | |
19843 | if (len != VEC_length (offset_type, eb->cu_indices)) | |
19844 | return 0; | |
19845 | return !memcmp (VEC_address (offset_type, ea->cu_indices), | |
19846 | VEC_address (offset_type, eb->cu_indices), | |
19847 | sizeof (offset_type) * len); | |
19848 | } | |
19849 | ||
19850 | /* Destroy a symtab_index_entry. */ | |
b89be57b | 19851 | |
9291a0cd TT |
19852 | static void |
19853 | delete_symtab_entry (void *p) | |
19854 | { | |
19855 | struct symtab_index_entry *entry = p; | |
19856 | VEC_free (offset_type, entry->cu_indices); | |
19857 | xfree (entry); | |
19858 | } | |
19859 | ||
19860 | /* Create a hash table holding symtab_index_entry objects. */ | |
b89be57b | 19861 | |
9291a0cd | 19862 | static htab_t |
3876f04e | 19863 | create_symbol_hash_table (void) |
9291a0cd TT |
19864 | { |
19865 | return htab_create_alloc (100, hash_symtab_entry, eq_symtab_entry, | |
19866 | delete_symtab_entry, xcalloc, xfree); | |
19867 | } | |
19868 | ||
19869 | /* Create a new mapped symtab object. */ | |
b89be57b | 19870 | |
9291a0cd TT |
19871 | static struct mapped_symtab * |
19872 | create_mapped_symtab (void) | |
19873 | { | |
19874 | struct mapped_symtab *symtab = XNEW (struct mapped_symtab); | |
19875 | symtab->n_elements = 0; | |
19876 | symtab->size = 1024; | |
19877 | symtab->data = XCNEWVEC (struct symtab_index_entry *, symtab->size); | |
19878 | return symtab; | |
19879 | } | |
19880 | ||
19881 | /* Destroy a mapped_symtab. */ | |
b89be57b | 19882 | |
9291a0cd TT |
19883 | static void |
19884 | cleanup_mapped_symtab (void *p) | |
19885 | { | |
19886 | struct mapped_symtab *symtab = p; | |
19887 | /* The contents of the array are freed when the other hash table is | |
19888 | destroyed. */ | |
19889 | xfree (symtab->data); | |
19890 | xfree (symtab); | |
19891 | } | |
19892 | ||
19893 | /* Find a slot in SYMTAB for the symbol NAME. Returns a pointer to | |
559a7a62 JK |
19894 | the slot. |
19895 | ||
19896 | Function is used only during write_hash_table so no index format backward | |
19897 | compatibility is needed. */ | |
b89be57b | 19898 | |
9291a0cd TT |
19899 | static struct symtab_index_entry ** |
19900 | find_slot (struct mapped_symtab *symtab, const char *name) | |
19901 | { | |
559a7a62 | 19902 | offset_type index, step, hash = mapped_index_string_hash (INT_MAX, name); |
9291a0cd TT |
19903 | |
19904 | index = hash & (symtab->size - 1); | |
19905 | step = ((hash * 17) & (symtab->size - 1)) | 1; | |
19906 | ||
19907 | for (;;) | |
19908 | { | |
19909 | if (!symtab->data[index] || !strcmp (name, symtab->data[index]->name)) | |
19910 | return &symtab->data[index]; | |
19911 | index = (index + step) & (symtab->size - 1); | |
19912 | } | |
19913 | } | |
19914 | ||
19915 | /* Expand SYMTAB's hash table. */ | |
b89be57b | 19916 | |
9291a0cd TT |
19917 | static void |
19918 | hash_expand (struct mapped_symtab *symtab) | |
19919 | { | |
19920 | offset_type old_size = symtab->size; | |
19921 | offset_type i; | |
19922 | struct symtab_index_entry **old_entries = symtab->data; | |
19923 | ||
19924 | symtab->size *= 2; | |
19925 | symtab->data = XCNEWVEC (struct symtab_index_entry *, symtab->size); | |
19926 | ||
19927 | for (i = 0; i < old_size; ++i) | |
19928 | { | |
19929 | if (old_entries[i]) | |
19930 | { | |
19931 | struct symtab_index_entry **slot = find_slot (symtab, | |
19932 | old_entries[i]->name); | |
19933 | *slot = old_entries[i]; | |
19934 | } | |
19935 | } | |
19936 | ||
19937 | xfree (old_entries); | |
19938 | } | |
19939 | ||
156942c7 DE |
19940 | /* Add an entry to SYMTAB. NAME is the name of the symbol. |
19941 | CU_INDEX is the index of the CU in which the symbol appears. | |
19942 | IS_STATIC is one if the symbol is static, otherwise zero (global). */ | |
b89be57b | 19943 | |
9291a0cd TT |
19944 | static void |
19945 | add_index_entry (struct mapped_symtab *symtab, const char *name, | |
156942c7 | 19946 | int is_static, gdb_index_symbol_kind kind, |
9291a0cd TT |
19947 | offset_type cu_index) |
19948 | { | |
19949 | struct symtab_index_entry **slot; | |
156942c7 | 19950 | offset_type cu_index_and_attrs; |
9291a0cd TT |
19951 | |
19952 | ++symtab->n_elements; | |
19953 | if (4 * symtab->n_elements / 3 >= symtab->size) | |
19954 | hash_expand (symtab); | |
19955 | ||
19956 | slot = find_slot (symtab, name); | |
19957 | if (!*slot) | |
19958 | { | |
19959 | *slot = XNEW (struct symtab_index_entry); | |
19960 | (*slot)->name = name; | |
156942c7 | 19961 | /* index_offset is set later. */ |
9291a0cd TT |
19962 | (*slot)->cu_indices = NULL; |
19963 | } | |
156942c7 DE |
19964 | |
19965 | cu_index_and_attrs = 0; | |
19966 | DW2_GDB_INDEX_CU_SET_VALUE (cu_index_and_attrs, cu_index); | |
19967 | DW2_GDB_INDEX_SYMBOL_STATIC_SET_VALUE (cu_index_and_attrs, is_static); | |
19968 | DW2_GDB_INDEX_SYMBOL_KIND_SET_VALUE (cu_index_and_attrs, kind); | |
19969 | ||
19970 | /* We don't want to record an index value twice as we want to avoid the | |
19971 | duplication. | |
19972 | We process all global symbols and then all static symbols | |
19973 | (which would allow us to avoid the duplication by only having to check | |
19974 | the last entry pushed), but a symbol could have multiple kinds in one CU. | |
19975 | To keep things simple we don't worry about the duplication here and | |
19976 | sort and uniqufy the list after we've processed all symbols. */ | |
19977 | VEC_safe_push (offset_type, (*slot)->cu_indices, cu_index_and_attrs); | |
19978 | } | |
19979 | ||
19980 | /* qsort helper routine for uniquify_cu_indices. */ | |
19981 | ||
19982 | static int | |
19983 | offset_type_compare (const void *ap, const void *bp) | |
19984 | { | |
19985 | offset_type a = *(offset_type *) ap; | |
19986 | offset_type b = *(offset_type *) bp; | |
19987 | ||
19988 | return (a > b) - (b > a); | |
19989 | } | |
19990 | ||
19991 | /* Sort and remove duplicates of all symbols' cu_indices lists. */ | |
19992 | ||
19993 | static void | |
19994 | uniquify_cu_indices (struct mapped_symtab *symtab) | |
19995 | { | |
19996 | int i; | |
19997 | ||
19998 | for (i = 0; i < symtab->size; ++i) | |
19999 | { | |
20000 | struct symtab_index_entry *entry = symtab->data[i]; | |
20001 | ||
20002 | if (entry | |
20003 | && entry->cu_indices != NULL) | |
20004 | { | |
20005 | unsigned int next_to_insert, next_to_check; | |
20006 | offset_type last_value; | |
20007 | ||
20008 | qsort (VEC_address (offset_type, entry->cu_indices), | |
20009 | VEC_length (offset_type, entry->cu_indices), | |
20010 | sizeof (offset_type), offset_type_compare); | |
20011 | ||
20012 | last_value = VEC_index (offset_type, entry->cu_indices, 0); | |
20013 | next_to_insert = 1; | |
20014 | for (next_to_check = 1; | |
20015 | next_to_check < VEC_length (offset_type, entry->cu_indices); | |
20016 | ++next_to_check) | |
20017 | { | |
20018 | if (VEC_index (offset_type, entry->cu_indices, next_to_check) | |
20019 | != last_value) | |
20020 | { | |
20021 | last_value = VEC_index (offset_type, entry->cu_indices, | |
20022 | next_to_check); | |
20023 | VEC_replace (offset_type, entry->cu_indices, next_to_insert, | |
20024 | last_value); | |
20025 | ++next_to_insert; | |
20026 | } | |
20027 | } | |
20028 | VEC_truncate (offset_type, entry->cu_indices, next_to_insert); | |
20029 | } | |
20030 | } | |
9291a0cd TT |
20031 | } |
20032 | ||
20033 | /* Add a vector of indices to the constant pool. */ | |
b89be57b | 20034 | |
9291a0cd | 20035 | static offset_type |
3876f04e | 20036 | add_indices_to_cpool (htab_t symbol_hash_table, struct obstack *cpool, |
9291a0cd TT |
20037 | struct symtab_index_entry *entry) |
20038 | { | |
20039 | void **slot; | |
20040 | ||
3876f04e | 20041 | slot = htab_find_slot (symbol_hash_table, entry, INSERT); |
9291a0cd TT |
20042 | if (!*slot) |
20043 | { | |
20044 | offset_type len = VEC_length (offset_type, entry->cu_indices); | |
20045 | offset_type val = MAYBE_SWAP (len); | |
20046 | offset_type iter; | |
20047 | int i; | |
20048 | ||
20049 | *slot = entry; | |
20050 | entry->index_offset = obstack_object_size (cpool); | |
20051 | ||
20052 | obstack_grow (cpool, &val, sizeof (val)); | |
20053 | for (i = 0; | |
20054 | VEC_iterate (offset_type, entry->cu_indices, i, iter); | |
20055 | ++i) | |
20056 | { | |
20057 | val = MAYBE_SWAP (iter); | |
20058 | obstack_grow (cpool, &val, sizeof (val)); | |
20059 | } | |
20060 | } | |
20061 | else | |
20062 | { | |
20063 | struct symtab_index_entry *old_entry = *slot; | |
20064 | entry->index_offset = old_entry->index_offset; | |
20065 | entry = old_entry; | |
20066 | } | |
20067 | return entry->index_offset; | |
20068 | } | |
20069 | ||
20070 | /* Write the mapped hash table SYMTAB to the obstack OUTPUT, with | |
20071 | constant pool entries going into the obstack CPOOL. */ | |
b89be57b | 20072 | |
9291a0cd TT |
20073 | static void |
20074 | write_hash_table (struct mapped_symtab *symtab, | |
20075 | struct obstack *output, struct obstack *cpool) | |
20076 | { | |
20077 | offset_type i; | |
3876f04e | 20078 | htab_t symbol_hash_table; |
9291a0cd TT |
20079 | htab_t str_table; |
20080 | ||
3876f04e | 20081 | symbol_hash_table = create_symbol_hash_table (); |
9291a0cd | 20082 | str_table = create_strtab (); |
3876f04e | 20083 | |
9291a0cd TT |
20084 | /* We add all the index vectors to the constant pool first, to |
20085 | ensure alignment is ok. */ | |
20086 | for (i = 0; i < symtab->size; ++i) | |
20087 | { | |
20088 | if (symtab->data[i]) | |
3876f04e | 20089 | add_indices_to_cpool (symbol_hash_table, cpool, symtab->data[i]); |
9291a0cd TT |
20090 | } |
20091 | ||
20092 | /* Now write out the hash table. */ | |
20093 | for (i = 0; i < symtab->size; ++i) | |
20094 | { | |
20095 | offset_type str_off, vec_off; | |
20096 | ||
20097 | if (symtab->data[i]) | |
20098 | { | |
20099 | str_off = add_string (str_table, cpool, symtab->data[i]->name); | |
20100 | vec_off = symtab->data[i]->index_offset; | |
20101 | } | |
20102 | else | |
20103 | { | |
20104 | /* While 0 is a valid constant pool index, it is not valid | |
20105 | to have 0 for both offsets. */ | |
20106 | str_off = 0; | |
20107 | vec_off = 0; | |
20108 | } | |
20109 | ||
20110 | str_off = MAYBE_SWAP (str_off); | |
20111 | vec_off = MAYBE_SWAP (vec_off); | |
20112 | ||
20113 | obstack_grow (output, &str_off, sizeof (str_off)); | |
20114 | obstack_grow (output, &vec_off, sizeof (vec_off)); | |
20115 | } | |
20116 | ||
20117 | htab_delete (str_table); | |
3876f04e | 20118 | htab_delete (symbol_hash_table); |
9291a0cd TT |
20119 | } |
20120 | ||
0a5429f6 DE |
20121 | /* Struct to map psymtab to CU index in the index file. */ |
20122 | struct psymtab_cu_index_map | |
20123 | { | |
20124 | struct partial_symtab *psymtab; | |
20125 | unsigned int cu_index; | |
20126 | }; | |
20127 | ||
20128 | static hashval_t | |
20129 | hash_psymtab_cu_index (const void *item) | |
20130 | { | |
20131 | const struct psymtab_cu_index_map *map = item; | |
20132 | ||
20133 | return htab_hash_pointer (map->psymtab); | |
20134 | } | |
20135 | ||
20136 | static int | |
20137 | eq_psymtab_cu_index (const void *item_lhs, const void *item_rhs) | |
20138 | { | |
20139 | const struct psymtab_cu_index_map *lhs = item_lhs; | |
20140 | const struct psymtab_cu_index_map *rhs = item_rhs; | |
20141 | ||
20142 | return lhs->psymtab == rhs->psymtab; | |
20143 | } | |
20144 | ||
20145 | /* Helper struct for building the address table. */ | |
20146 | struct addrmap_index_data | |
20147 | { | |
20148 | struct objfile *objfile; | |
20149 | struct obstack *addr_obstack; | |
20150 | htab_t cu_index_htab; | |
20151 | ||
20152 | /* Non-zero if the previous_* fields are valid. | |
20153 | We can't write an entry until we see the next entry (since it is only then | |
20154 | that we know the end of the entry). */ | |
20155 | int previous_valid; | |
20156 | /* Index of the CU in the table of all CUs in the index file. */ | |
20157 | unsigned int previous_cu_index; | |
0963b4bd | 20158 | /* Start address of the CU. */ |
0a5429f6 DE |
20159 | CORE_ADDR previous_cu_start; |
20160 | }; | |
20161 | ||
20162 | /* Write an address entry to OBSTACK. */ | |
b89be57b | 20163 | |
9291a0cd | 20164 | static void |
0a5429f6 DE |
20165 | add_address_entry (struct objfile *objfile, struct obstack *obstack, |
20166 | CORE_ADDR start, CORE_ADDR end, unsigned int cu_index) | |
9291a0cd | 20167 | { |
0a5429f6 | 20168 | offset_type cu_index_to_write; |
9291a0cd TT |
20169 | char addr[8]; |
20170 | CORE_ADDR baseaddr; | |
20171 | ||
20172 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
20173 | ||
0a5429f6 DE |
20174 | store_unsigned_integer (addr, 8, BFD_ENDIAN_LITTLE, start - baseaddr); |
20175 | obstack_grow (obstack, addr, 8); | |
20176 | store_unsigned_integer (addr, 8, BFD_ENDIAN_LITTLE, end - baseaddr); | |
20177 | obstack_grow (obstack, addr, 8); | |
20178 | cu_index_to_write = MAYBE_SWAP (cu_index); | |
20179 | obstack_grow (obstack, &cu_index_to_write, sizeof (offset_type)); | |
20180 | } | |
20181 | ||
20182 | /* Worker function for traversing an addrmap to build the address table. */ | |
20183 | ||
20184 | static int | |
20185 | add_address_entry_worker (void *datap, CORE_ADDR start_addr, void *obj) | |
20186 | { | |
20187 | struct addrmap_index_data *data = datap; | |
20188 | struct partial_symtab *pst = obj; | |
0a5429f6 DE |
20189 | |
20190 | if (data->previous_valid) | |
20191 | add_address_entry (data->objfile, data->addr_obstack, | |
20192 | data->previous_cu_start, start_addr, | |
20193 | data->previous_cu_index); | |
20194 | ||
20195 | data->previous_cu_start = start_addr; | |
20196 | if (pst != NULL) | |
20197 | { | |
20198 | struct psymtab_cu_index_map find_map, *map; | |
20199 | find_map.psymtab = pst; | |
20200 | map = htab_find (data->cu_index_htab, &find_map); | |
20201 | gdb_assert (map != NULL); | |
20202 | data->previous_cu_index = map->cu_index; | |
20203 | data->previous_valid = 1; | |
20204 | } | |
20205 | else | |
20206 | data->previous_valid = 0; | |
20207 | ||
20208 | return 0; | |
20209 | } | |
20210 | ||
20211 | /* Write OBJFILE's address map to OBSTACK. | |
20212 | CU_INDEX_HTAB is used to map addrmap entries to their CU indices | |
20213 | in the index file. */ | |
20214 | ||
20215 | static void | |
20216 | write_address_map (struct objfile *objfile, struct obstack *obstack, | |
20217 | htab_t cu_index_htab) | |
20218 | { | |
20219 | struct addrmap_index_data addrmap_index_data; | |
20220 | ||
20221 | /* When writing the address table, we have to cope with the fact that | |
20222 | the addrmap iterator only provides the start of a region; we have to | |
20223 | wait until the next invocation to get the start of the next region. */ | |
20224 | ||
20225 | addrmap_index_data.objfile = objfile; | |
20226 | addrmap_index_data.addr_obstack = obstack; | |
20227 | addrmap_index_data.cu_index_htab = cu_index_htab; | |
20228 | addrmap_index_data.previous_valid = 0; | |
20229 | ||
20230 | addrmap_foreach (objfile->psymtabs_addrmap, add_address_entry_worker, | |
20231 | &addrmap_index_data); | |
20232 | ||
20233 | /* It's highly unlikely the last entry (end address = 0xff...ff) | |
20234 | is valid, but we should still handle it. | |
20235 | The end address is recorded as the start of the next region, but that | |
20236 | doesn't work here. To cope we pass 0xff...ff, this is a rare situation | |
20237 | anyway. */ | |
20238 | if (addrmap_index_data.previous_valid) | |
20239 | add_address_entry (objfile, obstack, | |
20240 | addrmap_index_data.previous_cu_start, (CORE_ADDR) -1, | |
20241 | addrmap_index_data.previous_cu_index); | |
9291a0cd TT |
20242 | } |
20243 | ||
156942c7 DE |
20244 | /* Return the symbol kind of PSYM. */ |
20245 | ||
20246 | static gdb_index_symbol_kind | |
20247 | symbol_kind (struct partial_symbol *psym) | |
20248 | { | |
20249 | domain_enum domain = PSYMBOL_DOMAIN (psym); | |
20250 | enum address_class aclass = PSYMBOL_CLASS (psym); | |
20251 | ||
20252 | switch (domain) | |
20253 | { | |
20254 | case VAR_DOMAIN: | |
20255 | switch (aclass) | |
20256 | { | |
20257 | case LOC_BLOCK: | |
20258 | return GDB_INDEX_SYMBOL_KIND_FUNCTION; | |
20259 | case LOC_TYPEDEF: | |
20260 | return GDB_INDEX_SYMBOL_KIND_TYPE; | |
20261 | case LOC_COMPUTED: | |
20262 | case LOC_CONST_BYTES: | |
20263 | case LOC_OPTIMIZED_OUT: | |
20264 | case LOC_STATIC: | |
20265 | return GDB_INDEX_SYMBOL_KIND_VARIABLE; | |
20266 | case LOC_CONST: | |
20267 | /* Note: It's currently impossible to recognize psyms as enum values | |
20268 | short of reading the type info. For now punt. */ | |
20269 | return GDB_INDEX_SYMBOL_KIND_VARIABLE; | |
20270 | default: | |
20271 | /* There are other LOC_FOO values that one might want to classify | |
20272 | as variables, but dwarf2read.c doesn't currently use them. */ | |
20273 | return GDB_INDEX_SYMBOL_KIND_OTHER; | |
20274 | } | |
20275 | case STRUCT_DOMAIN: | |
20276 | return GDB_INDEX_SYMBOL_KIND_TYPE; | |
20277 | default: | |
20278 | return GDB_INDEX_SYMBOL_KIND_OTHER; | |
20279 | } | |
20280 | } | |
20281 | ||
9291a0cd | 20282 | /* Add a list of partial symbols to SYMTAB. */ |
b89be57b | 20283 | |
9291a0cd TT |
20284 | static void |
20285 | write_psymbols (struct mapped_symtab *symtab, | |
987d643c | 20286 | htab_t psyms_seen, |
9291a0cd TT |
20287 | struct partial_symbol **psymp, |
20288 | int count, | |
987d643c TT |
20289 | offset_type cu_index, |
20290 | int is_static) | |
9291a0cd TT |
20291 | { |
20292 | for (; count-- > 0; ++psymp) | |
20293 | { | |
156942c7 DE |
20294 | struct partial_symbol *psym = *psymp; |
20295 | void **slot; | |
987d643c | 20296 | |
156942c7 | 20297 | if (SYMBOL_LANGUAGE (psym) == language_ada) |
9291a0cd | 20298 | error (_("Ada is not currently supported by the index")); |
987d643c | 20299 | |
987d643c | 20300 | /* Only add a given psymbol once. */ |
156942c7 | 20301 | slot = htab_find_slot (psyms_seen, psym, INSERT); |
987d643c TT |
20302 | if (!*slot) |
20303 | { | |
156942c7 DE |
20304 | gdb_index_symbol_kind kind = symbol_kind (psym); |
20305 | ||
20306 | *slot = psym; | |
20307 | add_index_entry (symtab, SYMBOL_SEARCH_NAME (psym), | |
20308 | is_static, kind, cu_index); | |
987d643c | 20309 | } |
9291a0cd TT |
20310 | } |
20311 | } | |
20312 | ||
20313 | /* Write the contents of an ("unfinished") obstack to FILE. Throw an | |
20314 | exception if there is an error. */ | |
b89be57b | 20315 | |
9291a0cd TT |
20316 | static void |
20317 | write_obstack (FILE *file, struct obstack *obstack) | |
20318 | { | |
20319 | if (fwrite (obstack_base (obstack), 1, obstack_object_size (obstack), | |
20320 | file) | |
20321 | != obstack_object_size (obstack)) | |
20322 | error (_("couldn't data write to file")); | |
20323 | } | |
20324 | ||
20325 | /* Unlink a file if the argument is not NULL. */ | |
b89be57b | 20326 | |
9291a0cd TT |
20327 | static void |
20328 | unlink_if_set (void *p) | |
20329 | { | |
20330 | char **filename = p; | |
20331 | if (*filename) | |
20332 | unlink (*filename); | |
20333 | } | |
20334 | ||
1fd400ff TT |
20335 | /* A helper struct used when iterating over debug_types. */ |
20336 | struct signatured_type_index_data | |
20337 | { | |
20338 | struct objfile *objfile; | |
20339 | struct mapped_symtab *symtab; | |
20340 | struct obstack *types_list; | |
987d643c | 20341 | htab_t psyms_seen; |
1fd400ff TT |
20342 | int cu_index; |
20343 | }; | |
20344 | ||
20345 | /* A helper function that writes a single signatured_type to an | |
20346 | obstack. */ | |
b89be57b | 20347 | |
1fd400ff TT |
20348 | static int |
20349 | write_one_signatured_type (void **slot, void *d) | |
20350 | { | |
20351 | struct signatured_type_index_data *info = d; | |
20352 | struct signatured_type *entry = (struct signatured_type *) *slot; | |
e254ef6a DE |
20353 | struct dwarf2_per_cu_data *per_cu = &entry->per_cu; |
20354 | struct partial_symtab *psymtab = per_cu->v.psymtab; | |
1fd400ff TT |
20355 | gdb_byte val[8]; |
20356 | ||
20357 | write_psymbols (info->symtab, | |
987d643c | 20358 | info->psyms_seen, |
3e43a32a MS |
20359 | info->objfile->global_psymbols.list |
20360 | + psymtab->globals_offset, | |
987d643c TT |
20361 | psymtab->n_global_syms, info->cu_index, |
20362 | 0); | |
1fd400ff | 20363 | write_psymbols (info->symtab, |
987d643c | 20364 | info->psyms_seen, |
3e43a32a MS |
20365 | info->objfile->static_psymbols.list |
20366 | + psymtab->statics_offset, | |
987d643c TT |
20367 | psymtab->n_static_syms, info->cu_index, |
20368 | 1); | |
1fd400ff | 20369 | |
b64f50a1 JK |
20370 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, |
20371 | entry->per_cu.offset.sect_off); | |
1fd400ff | 20372 | obstack_grow (info->types_list, val, 8); |
3019eac3 DE |
20373 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, |
20374 | entry->type_offset_in_tu.cu_off); | |
1fd400ff TT |
20375 | obstack_grow (info->types_list, val, 8); |
20376 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, entry->signature); | |
20377 | obstack_grow (info->types_list, val, 8); | |
20378 | ||
20379 | ++info->cu_index; | |
20380 | ||
20381 | return 1; | |
20382 | } | |
20383 | ||
95554aad TT |
20384 | /* Recurse into all "included" dependencies and write their symbols as |
20385 | if they appeared in this psymtab. */ | |
20386 | ||
20387 | static void | |
20388 | recursively_write_psymbols (struct objfile *objfile, | |
20389 | struct partial_symtab *psymtab, | |
20390 | struct mapped_symtab *symtab, | |
20391 | htab_t psyms_seen, | |
20392 | offset_type cu_index) | |
20393 | { | |
20394 | int i; | |
20395 | ||
20396 | for (i = 0; i < psymtab->number_of_dependencies; ++i) | |
20397 | if (psymtab->dependencies[i]->user != NULL) | |
20398 | recursively_write_psymbols (objfile, psymtab->dependencies[i], | |
20399 | symtab, psyms_seen, cu_index); | |
20400 | ||
20401 | write_psymbols (symtab, | |
20402 | psyms_seen, | |
20403 | objfile->global_psymbols.list + psymtab->globals_offset, | |
20404 | psymtab->n_global_syms, cu_index, | |
20405 | 0); | |
20406 | write_psymbols (symtab, | |
20407 | psyms_seen, | |
20408 | objfile->static_psymbols.list + psymtab->statics_offset, | |
20409 | psymtab->n_static_syms, cu_index, | |
20410 | 1); | |
20411 | } | |
20412 | ||
9291a0cd | 20413 | /* Create an index file for OBJFILE in the directory DIR. */ |
b89be57b | 20414 | |
9291a0cd TT |
20415 | static void |
20416 | write_psymtabs_to_index (struct objfile *objfile, const char *dir) | |
20417 | { | |
20418 | struct cleanup *cleanup; | |
20419 | char *filename, *cleanup_filename; | |
1fd400ff TT |
20420 | struct obstack contents, addr_obstack, constant_pool, symtab_obstack; |
20421 | struct obstack cu_list, types_cu_list; | |
9291a0cd TT |
20422 | int i; |
20423 | FILE *out_file; | |
20424 | struct mapped_symtab *symtab; | |
20425 | offset_type val, size_of_contents, total_len; | |
20426 | struct stat st; | |
987d643c | 20427 | htab_t psyms_seen; |
0a5429f6 DE |
20428 | htab_t cu_index_htab; |
20429 | struct psymtab_cu_index_map *psymtab_cu_index_map; | |
9291a0cd | 20430 | |
b4f2f049 | 20431 | if (!objfile->psymtabs || !objfile->psymtabs_addrmap) |
9291a0cd | 20432 | return; |
b4f2f049 | 20433 | |
9291a0cd TT |
20434 | if (dwarf2_per_objfile->using_index) |
20435 | error (_("Cannot use an index to create the index")); | |
20436 | ||
8b70b953 TT |
20437 | if (VEC_length (dwarf2_section_info_def, dwarf2_per_objfile->types) > 1) |
20438 | error (_("Cannot make an index when the file has multiple .debug_types sections")); | |
20439 | ||
9291a0cd | 20440 | if (stat (objfile->name, &st) < 0) |
7e17e088 | 20441 | perror_with_name (objfile->name); |
9291a0cd TT |
20442 | |
20443 | filename = concat (dir, SLASH_STRING, lbasename (objfile->name), | |
20444 | INDEX_SUFFIX, (char *) NULL); | |
20445 | cleanup = make_cleanup (xfree, filename); | |
20446 | ||
20447 | out_file = fopen (filename, "wb"); | |
20448 | if (!out_file) | |
20449 | error (_("Can't open `%s' for writing"), filename); | |
20450 | ||
20451 | cleanup_filename = filename; | |
20452 | make_cleanup (unlink_if_set, &cleanup_filename); | |
20453 | ||
20454 | symtab = create_mapped_symtab (); | |
20455 | make_cleanup (cleanup_mapped_symtab, symtab); | |
20456 | ||
20457 | obstack_init (&addr_obstack); | |
20458 | make_cleanup_obstack_free (&addr_obstack); | |
20459 | ||
20460 | obstack_init (&cu_list); | |
20461 | make_cleanup_obstack_free (&cu_list); | |
20462 | ||
1fd400ff TT |
20463 | obstack_init (&types_cu_list); |
20464 | make_cleanup_obstack_free (&types_cu_list); | |
20465 | ||
987d643c TT |
20466 | psyms_seen = htab_create_alloc (100, htab_hash_pointer, htab_eq_pointer, |
20467 | NULL, xcalloc, xfree); | |
96408a79 | 20468 | make_cleanup_htab_delete (psyms_seen); |
987d643c | 20469 | |
0a5429f6 DE |
20470 | /* While we're scanning CU's create a table that maps a psymtab pointer |
20471 | (which is what addrmap records) to its index (which is what is recorded | |
20472 | in the index file). This will later be needed to write the address | |
20473 | table. */ | |
20474 | cu_index_htab = htab_create_alloc (100, | |
20475 | hash_psymtab_cu_index, | |
20476 | eq_psymtab_cu_index, | |
20477 | NULL, xcalloc, xfree); | |
96408a79 | 20478 | make_cleanup_htab_delete (cu_index_htab); |
0a5429f6 DE |
20479 | psymtab_cu_index_map = (struct psymtab_cu_index_map *) |
20480 | xmalloc (sizeof (struct psymtab_cu_index_map) | |
20481 | * dwarf2_per_objfile->n_comp_units); | |
20482 | make_cleanup (xfree, psymtab_cu_index_map); | |
20483 | ||
20484 | /* The CU list is already sorted, so we don't need to do additional | |
1fd400ff TT |
20485 | work here. Also, the debug_types entries do not appear in |
20486 | all_comp_units, but only in their own hash table. */ | |
9291a0cd TT |
20487 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
20488 | { | |
3e43a32a MS |
20489 | struct dwarf2_per_cu_data *per_cu |
20490 | = dwarf2_per_objfile->all_comp_units[i]; | |
e254ef6a | 20491 | struct partial_symtab *psymtab = per_cu->v.psymtab; |
9291a0cd | 20492 | gdb_byte val[8]; |
0a5429f6 DE |
20493 | struct psymtab_cu_index_map *map; |
20494 | void **slot; | |
9291a0cd | 20495 | |
95554aad TT |
20496 | if (psymtab->user == NULL) |
20497 | recursively_write_psymbols (objfile, psymtab, symtab, psyms_seen, i); | |
9291a0cd | 20498 | |
0a5429f6 DE |
20499 | map = &psymtab_cu_index_map[i]; |
20500 | map->psymtab = psymtab; | |
20501 | map->cu_index = i; | |
20502 | slot = htab_find_slot (cu_index_htab, map, INSERT); | |
20503 | gdb_assert (slot != NULL); | |
20504 | gdb_assert (*slot == NULL); | |
20505 | *slot = map; | |
9291a0cd | 20506 | |
b64f50a1 JK |
20507 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, |
20508 | per_cu->offset.sect_off); | |
9291a0cd | 20509 | obstack_grow (&cu_list, val, 8); |
e254ef6a | 20510 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, per_cu->length); |
9291a0cd TT |
20511 | obstack_grow (&cu_list, val, 8); |
20512 | } | |
20513 | ||
0a5429f6 DE |
20514 | /* Dump the address map. */ |
20515 | write_address_map (objfile, &addr_obstack, cu_index_htab); | |
20516 | ||
1fd400ff TT |
20517 | /* Write out the .debug_type entries, if any. */ |
20518 | if (dwarf2_per_objfile->signatured_types) | |
20519 | { | |
20520 | struct signatured_type_index_data sig_data; | |
20521 | ||
20522 | sig_data.objfile = objfile; | |
20523 | sig_data.symtab = symtab; | |
20524 | sig_data.types_list = &types_cu_list; | |
987d643c | 20525 | sig_data.psyms_seen = psyms_seen; |
1fd400ff TT |
20526 | sig_data.cu_index = dwarf2_per_objfile->n_comp_units; |
20527 | htab_traverse_noresize (dwarf2_per_objfile->signatured_types, | |
20528 | write_one_signatured_type, &sig_data); | |
20529 | } | |
20530 | ||
156942c7 DE |
20531 | /* Now that we've processed all symbols we can shrink their cu_indices |
20532 | lists. */ | |
20533 | uniquify_cu_indices (symtab); | |
20534 | ||
9291a0cd TT |
20535 | obstack_init (&constant_pool); |
20536 | make_cleanup_obstack_free (&constant_pool); | |
20537 | obstack_init (&symtab_obstack); | |
20538 | make_cleanup_obstack_free (&symtab_obstack); | |
20539 | write_hash_table (symtab, &symtab_obstack, &constant_pool); | |
20540 | ||
20541 | obstack_init (&contents); | |
20542 | make_cleanup_obstack_free (&contents); | |
1fd400ff | 20543 | size_of_contents = 6 * sizeof (offset_type); |
9291a0cd TT |
20544 | total_len = size_of_contents; |
20545 | ||
20546 | /* The version number. */ | |
796a7ff8 | 20547 | val = MAYBE_SWAP (8); |
9291a0cd TT |
20548 | obstack_grow (&contents, &val, sizeof (val)); |
20549 | ||
20550 | /* The offset of the CU list from the start of the file. */ | |
20551 | val = MAYBE_SWAP (total_len); | |
20552 | obstack_grow (&contents, &val, sizeof (val)); | |
20553 | total_len += obstack_object_size (&cu_list); | |
20554 | ||
1fd400ff TT |
20555 | /* The offset of the types CU list from the start of the file. */ |
20556 | val = MAYBE_SWAP (total_len); | |
20557 | obstack_grow (&contents, &val, sizeof (val)); | |
20558 | total_len += obstack_object_size (&types_cu_list); | |
20559 | ||
9291a0cd TT |
20560 | /* The offset of the address table from the start of the file. */ |
20561 | val = MAYBE_SWAP (total_len); | |
20562 | obstack_grow (&contents, &val, sizeof (val)); | |
20563 | total_len += obstack_object_size (&addr_obstack); | |
20564 | ||
20565 | /* The offset of the symbol table from the start of the file. */ | |
20566 | val = MAYBE_SWAP (total_len); | |
20567 | obstack_grow (&contents, &val, sizeof (val)); | |
20568 | total_len += obstack_object_size (&symtab_obstack); | |
20569 | ||
20570 | /* The offset of the constant pool from the start of the file. */ | |
20571 | val = MAYBE_SWAP (total_len); | |
20572 | obstack_grow (&contents, &val, sizeof (val)); | |
20573 | total_len += obstack_object_size (&constant_pool); | |
20574 | ||
20575 | gdb_assert (obstack_object_size (&contents) == size_of_contents); | |
20576 | ||
20577 | write_obstack (out_file, &contents); | |
20578 | write_obstack (out_file, &cu_list); | |
1fd400ff | 20579 | write_obstack (out_file, &types_cu_list); |
9291a0cd TT |
20580 | write_obstack (out_file, &addr_obstack); |
20581 | write_obstack (out_file, &symtab_obstack); | |
20582 | write_obstack (out_file, &constant_pool); | |
20583 | ||
20584 | fclose (out_file); | |
20585 | ||
20586 | /* We want to keep the file, so we set cleanup_filename to NULL | |
20587 | here. See unlink_if_set. */ | |
20588 | cleanup_filename = NULL; | |
20589 | ||
20590 | do_cleanups (cleanup); | |
20591 | } | |
20592 | ||
90476074 TT |
20593 | /* Implementation of the `save gdb-index' command. |
20594 | ||
20595 | Note that the file format used by this command is documented in the | |
20596 | GDB manual. Any changes here must be documented there. */ | |
11570e71 | 20597 | |
9291a0cd TT |
20598 | static void |
20599 | save_gdb_index_command (char *arg, int from_tty) | |
20600 | { | |
20601 | struct objfile *objfile; | |
20602 | ||
20603 | if (!arg || !*arg) | |
96d19272 | 20604 | error (_("usage: save gdb-index DIRECTORY")); |
9291a0cd TT |
20605 | |
20606 | ALL_OBJFILES (objfile) | |
20607 | { | |
20608 | struct stat st; | |
20609 | ||
20610 | /* If the objfile does not correspond to an actual file, skip it. */ | |
20611 | if (stat (objfile->name, &st) < 0) | |
20612 | continue; | |
20613 | ||
20614 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); | |
20615 | if (dwarf2_per_objfile) | |
20616 | { | |
20617 | volatile struct gdb_exception except; | |
20618 | ||
20619 | TRY_CATCH (except, RETURN_MASK_ERROR) | |
20620 | { | |
20621 | write_psymtabs_to_index (objfile, arg); | |
20622 | } | |
20623 | if (except.reason < 0) | |
20624 | exception_fprintf (gdb_stderr, except, | |
20625 | _("Error while writing index for `%s': "), | |
20626 | objfile->name); | |
20627 | } | |
20628 | } | |
dce234bc PP |
20629 | } |
20630 | ||
9291a0cd TT |
20631 | \f |
20632 | ||
9eae7c52 TT |
20633 | int dwarf2_always_disassemble; |
20634 | ||
20635 | static void | |
20636 | show_dwarf2_always_disassemble (struct ui_file *file, int from_tty, | |
20637 | struct cmd_list_element *c, const char *value) | |
20638 | { | |
3e43a32a MS |
20639 | fprintf_filtered (file, |
20640 | _("Whether to always disassemble " | |
20641 | "DWARF expressions is %s.\n"), | |
9eae7c52 TT |
20642 | value); |
20643 | } | |
20644 | ||
900e11f9 JK |
20645 | static void |
20646 | show_check_physname (struct ui_file *file, int from_tty, | |
20647 | struct cmd_list_element *c, const char *value) | |
20648 | { | |
20649 | fprintf_filtered (file, | |
20650 | _("Whether to check \"physname\" is %s.\n"), | |
20651 | value); | |
20652 | } | |
20653 | ||
6502dd73 DJ |
20654 | void _initialize_dwarf2_read (void); |
20655 | ||
20656 | void | |
20657 | _initialize_dwarf2_read (void) | |
20658 | { | |
96d19272 JK |
20659 | struct cmd_list_element *c; |
20660 | ||
dce234bc | 20661 | dwarf2_objfile_data_key |
c1bd65d0 | 20662 | = register_objfile_data_with_cleanup (NULL, dwarf2_per_objfile_free); |
ae038cb0 | 20663 | |
1bedd215 AC |
20664 | add_prefix_cmd ("dwarf2", class_maintenance, set_dwarf2_cmd, _("\ |
20665 | Set DWARF 2 specific variables.\n\ | |
20666 | Configure DWARF 2 variables such as the cache size"), | |
ae038cb0 DJ |
20667 | &set_dwarf2_cmdlist, "maintenance set dwarf2 ", |
20668 | 0/*allow-unknown*/, &maintenance_set_cmdlist); | |
20669 | ||
1bedd215 AC |
20670 | add_prefix_cmd ("dwarf2", class_maintenance, show_dwarf2_cmd, _("\ |
20671 | Show DWARF 2 specific variables\n\ | |
20672 | Show DWARF 2 variables such as the cache size"), | |
ae038cb0 DJ |
20673 | &show_dwarf2_cmdlist, "maintenance show dwarf2 ", |
20674 | 0/*allow-unknown*/, &maintenance_show_cmdlist); | |
20675 | ||
20676 | add_setshow_zinteger_cmd ("max-cache-age", class_obscure, | |
7915a72c AC |
20677 | &dwarf2_max_cache_age, _("\ |
20678 | Set the upper bound on the age of cached dwarf2 compilation units."), _("\ | |
20679 | Show the upper bound on the age of cached dwarf2 compilation units."), _("\ | |
20680 | A higher limit means that cached compilation units will be stored\n\ | |
20681 | in memory longer, and more total memory will be used. Zero disables\n\ | |
20682 | caching, which can slow down startup."), | |
2c5b56ce | 20683 | NULL, |
920d2a44 | 20684 | show_dwarf2_max_cache_age, |
2c5b56ce | 20685 | &set_dwarf2_cmdlist, |
ae038cb0 | 20686 | &show_dwarf2_cmdlist); |
d97bc12b | 20687 | |
9eae7c52 TT |
20688 | add_setshow_boolean_cmd ("always-disassemble", class_obscure, |
20689 | &dwarf2_always_disassemble, _("\ | |
20690 | Set whether `info address' always disassembles DWARF expressions."), _("\ | |
20691 | Show whether `info address' always disassembles DWARF expressions."), _("\ | |
20692 | When enabled, DWARF expressions are always printed in an assembly-like\n\ | |
20693 | syntax. When disabled, expressions will be printed in a more\n\ | |
20694 | conversational style, when possible."), | |
20695 | NULL, | |
20696 | show_dwarf2_always_disassemble, | |
20697 | &set_dwarf2_cmdlist, | |
20698 | &show_dwarf2_cmdlist); | |
20699 | ||
45cfd468 DE |
20700 | add_setshow_boolean_cmd ("dwarf2-read", no_class, &dwarf2_read_debug, _("\ |
20701 | Set debugging of the dwarf2 reader."), _("\ | |
20702 | Show debugging of the dwarf2 reader."), _("\ | |
20703 | When enabled, debugging messages are printed during dwarf2 reading\n\ | |
20704 | and symtab expansion."), | |
20705 | NULL, | |
20706 | NULL, | |
20707 | &setdebuglist, &showdebuglist); | |
20708 | ||
ccce17b0 | 20709 | add_setshow_zuinteger_cmd ("dwarf2-die", no_class, &dwarf2_die_debug, _("\ |
d97bc12b DE |
20710 | Set debugging of the dwarf2 DIE reader."), _("\ |
20711 | Show debugging of the dwarf2 DIE reader."), _("\ | |
20712 | When enabled (non-zero), DIEs are dumped after they are read in.\n\ | |
20713 | The value is the maximum depth to print."), | |
ccce17b0 YQ |
20714 | NULL, |
20715 | NULL, | |
20716 | &setdebuglist, &showdebuglist); | |
9291a0cd | 20717 | |
900e11f9 JK |
20718 | add_setshow_boolean_cmd ("check-physname", no_class, &check_physname, _("\ |
20719 | Set cross-checking of \"physname\" code against demangler."), _("\ | |
20720 | Show cross-checking of \"physname\" code against demangler."), _("\ | |
20721 | When enabled, GDB's internal \"physname\" code is checked against\n\ | |
20722 | the demangler."), | |
20723 | NULL, show_check_physname, | |
20724 | &setdebuglist, &showdebuglist); | |
20725 | ||
e615022a DE |
20726 | add_setshow_boolean_cmd ("use-deprecated-index-sections", |
20727 | no_class, &use_deprecated_index_sections, _("\ | |
20728 | Set whether to use deprecated gdb_index sections."), _("\ | |
20729 | Show whether to use deprecated gdb_index sections."), _("\ | |
20730 | When enabled, deprecated .gdb_index sections are used anyway.\n\ | |
20731 | Normally they are ignored either because of a missing feature or\n\ | |
20732 | performance issue.\n\ | |
20733 | Warning: This option must be enabled before gdb reads the file."), | |
20734 | NULL, | |
20735 | NULL, | |
20736 | &setlist, &showlist); | |
20737 | ||
96d19272 | 20738 | c = add_cmd ("gdb-index", class_files, save_gdb_index_command, |
11570e71 | 20739 | _("\ |
fc1a9d6e | 20740 | Save a gdb-index file.\n\ |
11570e71 | 20741 | Usage: save gdb-index DIRECTORY"), |
96d19272 JK |
20742 | &save_cmdlist); |
20743 | set_cmd_completer (c, filename_completer); | |
f1e6e072 TT |
20744 | |
20745 | dwarf2_locexpr_index = register_symbol_computed_impl (LOC_COMPUTED, | |
20746 | &dwarf2_locexpr_funcs); | |
20747 | dwarf2_loclist_index = register_symbol_computed_impl (LOC_COMPUTED, | |
20748 | &dwarf2_loclist_funcs); | |
20749 | ||
20750 | dwarf2_locexpr_block_index = register_symbol_block_impl (LOC_BLOCK, | |
20751 | &dwarf2_block_frame_base_locexpr_funcs); | |
20752 | dwarf2_loclist_block_index = register_symbol_block_impl (LOC_BLOCK, | |
20753 | &dwarf2_block_frame_base_loclist_funcs); | |
6502dd73 | 20754 | } |