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 | ||
dce234bc PP |
95 | struct dwarf2_section_info |
96 | { | |
97 | asection *asection; | |
98 | gdb_byte *buffer; | |
99 | bfd_size_type size; | |
be391dca TT |
100 | /* True if we have tried to read this section. */ |
101 | int readin; | |
dce234bc PP |
102 | }; |
103 | ||
8b70b953 TT |
104 | typedef struct dwarf2_section_info dwarf2_section_info_def; |
105 | DEF_VEC_O (dwarf2_section_info_def); | |
106 | ||
9291a0cd TT |
107 | /* All offsets in the index are of this type. It must be |
108 | architecture-independent. */ | |
109 | typedef uint32_t offset_type; | |
110 | ||
111 | DEF_VEC_I (offset_type); | |
112 | ||
156942c7 DE |
113 | /* Ensure only legit values are used. */ |
114 | #define DW2_GDB_INDEX_SYMBOL_STATIC_SET_VALUE(cu_index, value) \ | |
115 | do { \ | |
116 | gdb_assert ((unsigned int) (value) <= 1); \ | |
117 | GDB_INDEX_SYMBOL_STATIC_SET_VALUE((cu_index), (value)); \ | |
118 | } while (0) | |
119 | ||
120 | /* Ensure only legit values are used. */ | |
121 | #define DW2_GDB_INDEX_SYMBOL_KIND_SET_VALUE(cu_index, value) \ | |
122 | do { \ | |
123 | gdb_assert ((value) >= GDB_INDEX_SYMBOL_KIND_TYPE \ | |
124 | && (value) <= GDB_INDEX_SYMBOL_KIND_OTHER); \ | |
125 | GDB_INDEX_SYMBOL_KIND_SET_VALUE((cu_index), (value)); \ | |
126 | } while (0) | |
127 | ||
128 | /* Ensure we don't use more than the alloted nuber of bits for the CU. */ | |
129 | #define DW2_GDB_INDEX_CU_SET_VALUE(cu_index, value) \ | |
130 | do { \ | |
131 | gdb_assert (((value) & ~GDB_INDEX_CU_MASK) == 0); \ | |
132 | GDB_INDEX_CU_SET_VALUE((cu_index), (value)); \ | |
133 | } while (0) | |
134 | ||
9291a0cd TT |
135 | /* A description of the mapped index. The file format is described in |
136 | a comment by the code that writes the index. */ | |
137 | struct mapped_index | |
138 | { | |
559a7a62 JK |
139 | /* Index data format version. */ |
140 | int version; | |
141 | ||
9291a0cd TT |
142 | /* The total length of the buffer. */ |
143 | off_t total_size; | |
b11b1f88 | 144 | |
9291a0cd TT |
145 | /* A pointer to the address table data. */ |
146 | const gdb_byte *address_table; | |
b11b1f88 | 147 | |
9291a0cd TT |
148 | /* Size of the address table data in bytes. */ |
149 | offset_type address_table_size; | |
b11b1f88 | 150 | |
3876f04e DE |
151 | /* The symbol table, implemented as a hash table. */ |
152 | const offset_type *symbol_table; | |
b11b1f88 | 153 | |
9291a0cd | 154 | /* Size in slots, each slot is 2 offset_types. */ |
3876f04e | 155 | offset_type symbol_table_slots; |
b11b1f88 | 156 | |
9291a0cd TT |
157 | /* A pointer to the constant pool. */ |
158 | const char *constant_pool; | |
159 | }; | |
160 | ||
95554aad TT |
161 | typedef struct dwarf2_per_cu_data *dwarf2_per_cu_ptr; |
162 | DEF_VEC_P (dwarf2_per_cu_ptr); | |
163 | ||
9cdd5dbd DE |
164 | /* Collection of data recorded per objfile. |
165 | This hangs off of dwarf2_objfile_data_key. */ | |
166 | ||
6502dd73 DJ |
167 | struct dwarf2_per_objfile |
168 | { | |
dce234bc PP |
169 | struct dwarf2_section_info info; |
170 | struct dwarf2_section_info abbrev; | |
171 | struct dwarf2_section_info line; | |
dce234bc PP |
172 | struct dwarf2_section_info loc; |
173 | struct dwarf2_section_info macinfo; | |
cf2c3c16 | 174 | struct dwarf2_section_info macro; |
dce234bc PP |
175 | struct dwarf2_section_info str; |
176 | struct dwarf2_section_info ranges; | |
3019eac3 | 177 | struct dwarf2_section_info addr; |
dce234bc PP |
178 | struct dwarf2_section_info frame; |
179 | struct dwarf2_section_info eh_frame; | |
9291a0cd | 180 | struct dwarf2_section_info gdb_index; |
ae038cb0 | 181 | |
8b70b953 TT |
182 | VEC (dwarf2_section_info_def) *types; |
183 | ||
be391dca TT |
184 | /* Back link. */ |
185 | struct objfile *objfile; | |
186 | ||
d467dd73 | 187 | /* Table of all the compilation units. This is used to locate |
10b3939b | 188 | the target compilation unit of a particular reference. */ |
ae038cb0 DJ |
189 | struct dwarf2_per_cu_data **all_comp_units; |
190 | ||
191 | /* The number of compilation units in ALL_COMP_UNITS. */ | |
192 | int n_comp_units; | |
193 | ||
1fd400ff | 194 | /* The number of .debug_types-related CUs. */ |
d467dd73 | 195 | int n_type_units; |
1fd400ff | 196 | |
d467dd73 | 197 | /* The .debug_types-related CUs (TUs). */ |
b4dd5633 | 198 | struct signatured_type **all_type_units; |
1fd400ff | 199 | |
f4dc4d17 DE |
200 | /* The number of entries in all_type_unit_groups. */ |
201 | int n_type_unit_groups; | |
202 | ||
203 | /* Table of type unit groups. | |
204 | This exists to make it easy to iterate over all CUs and TU groups. */ | |
205 | struct type_unit_group **all_type_unit_groups; | |
206 | ||
207 | /* Table of struct type_unit_group objects. | |
208 | The hash key is the DW_AT_stmt_list value. */ | |
209 | htab_t type_unit_groups; | |
72dca2f5 | 210 | |
348e048f DE |
211 | /* A table mapping .debug_types signatures to its signatured_type entry. |
212 | This is NULL if the .debug_types section hasn't been read in yet. */ | |
213 | htab_t signatured_types; | |
214 | ||
f4dc4d17 DE |
215 | /* Type unit statistics, to see how well the scaling improvements |
216 | are doing. */ | |
217 | struct tu_stats | |
218 | { | |
219 | int nr_uniq_abbrev_tables; | |
220 | int nr_symtabs; | |
221 | int nr_symtab_sharers; | |
222 | int nr_stmt_less_type_units; | |
223 | } tu_stats; | |
224 | ||
225 | /* A chain of compilation units that are currently read in, so that | |
226 | they can be freed later. */ | |
227 | struct dwarf2_per_cu_data *read_in_chain; | |
228 | ||
3019eac3 DE |
229 | /* A table mapping DW_AT_dwo_name values to struct dwo_file objects. |
230 | This is NULL if the table hasn't been allocated yet. */ | |
231 | htab_t dwo_files; | |
232 | ||
80626a55 DE |
233 | /* Non-zero if we've check for whether there is a DWP file. */ |
234 | int dwp_checked; | |
235 | ||
236 | /* The DWP file if there is one, or NULL. */ | |
237 | struct dwp_file *dwp_file; | |
238 | ||
36586728 TT |
239 | /* The shared '.dwz' file, if one exists. This is used when the |
240 | original data was compressed using 'dwz -m'. */ | |
241 | struct dwz_file *dwz_file; | |
242 | ||
72dca2f5 FR |
243 | /* A flag indicating wether this objfile has a section loaded at a |
244 | VMA of 0. */ | |
245 | int has_section_at_zero; | |
9291a0cd | 246 | |
ae2de4f8 DE |
247 | /* True if we are using the mapped index, |
248 | or we are faking it for OBJF_READNOW's sake. */ | |
9291a0cd TT |
249 | unsigned char using_index; |
250 | ||
ae2de4f8 | 251 | /* The mapped index, or NULL if .gdb_index is missing or not being used. */ |
9291a0cd | 252 | struct mapped_index *index_table; |
98bfdba5 | 253 | |
7b9f3c50 | 254 | /* When using index_table, this keeps track of all quick_file_names entries. |
56e64610 DE |
255 | TUs typically share line table entries with a CU, so we maintain a |
256 | separate table of all line table entries to support the sharing. | |
257 | Note that while there can be way more TUs than CUs, we've already | |
258 | sorted all the TUs into "type unit groups", grouped by their | |
259 | DW_AT_stmt_list value. Therefore the only sharing done here is with a | |
260 | CU and its associated TU group if there is one. */ | |
7b9f3c50 DE |
261 | htab_t quick_file_names_table; |
262 | ||
98bfdba5 PA |
263 | /* Set during partial symbol reading, to prevent queueing of full |
264 | symbols. */ | |
265 | int reading_partial_symbols; | |
673bfd45 | 266 | |
dee91e82 | 267 | /* Table mapping type DIEs to their struct type *. |
673bfd45 | 268 | This is NULL if not allocated yet. |
dee91e82 DE |
269 | The mapping is done via (CU/TU signature + DIE offset) -> type. */ |
270 | htab_t die_type_hash; | |
95554aad TT |
271 | |
272 | /* The CUs we recently read. */ | |
273 | VEC (dwarf2_per_cu_ptr) *just_read_cus; | |
6502dd73 DJ |
274 | }; |
275 | ||
276 | static struct dwarf2_per_objfile *dwarf2_per_objfile; | |
c906108c | 277 | |
251d32d9 | 278 | /* Default names of the debugging sections. */ |
c906108c | 279 | |
233a11ab CS |
280 | /* Note that if the debugging section has been compressed, it might |
281 | have a name like .zdebug_info. */ | |
282 | ||
9cdd5dbd DE |
283 | static const struct dwarf2_debug_sections dwarf2_elf_names = |
284 | { | |
251d32d9 TG |
285 | { ".debug_info", ".zdebug_info" }, |
286 | { ".debug_abbrev", ".zdebug_abbrev" }, | |
287 | { ".debug_line", ".zdebug_line" }, | |
288 | { ".debug_loc", ".zdebug_loc" }, | |
289 | { ".debug_macinfo", ".zdebug_macinfo" }, | |
cf2c3c16 | 290 | { ".debug_macro", ".zdebug_macro" }, |
251d32d9 TG |
291 | { ".debug_str", ".zdebug_str" }, |
292 | { ".debug_ranges", ".zdebug_ranges" }, | |
293 | { ".debug_types", ".zdebug_types" }, | |
3019eac3 | 294 | { ".debug_addr", ".zdebug_addr" }, |
251d32d9 TG |
295 | { ".debug_frame", ".zdebug_frame" }, |
296 | { ".eh_frame", NULL }, | |
24d3216f TT |
297 | { ".gdb_index", ".zgdb_index" }, |
298 | 23 | |
251d32d9 | 299 | }; |
c906108c | 300 | |
80626a55 | 301 | /* List of DWO/DWP sections. */ |
3019eac3 | 302 | |
80626a55 | 303 | static const struct dwop_section_names |
3019eac3 DE |
304 | { |
305 | struct dwarf2_section_names abbrev_dwo; | |
306 | struct dwarf2_section_names info_dwo; | |
307 | struct dwarf2_section_names line_dwo; | |
308 | struct dwarf2_section_names loc_dwo; | |
09262596 DE |
309 | struct dwarf2_section_names macinfo_dwo; |
310 | struct dwarf2_section_names macro_dwo; | |
3019eac3 DE |
311 | struct dwarf2_section_names str_dwo; |
312 | struct dwarf2_section_names str_offsets_dwo; | |
313 | struct dwarf2_section_names types_dwo; | |
80626a55 DE |
314 | struct dwarf2_section_names cu_index; |
315 | struct dwarf2_section_names tu_index; | |
3019eac3 | 316 | } |
80626a55 | 317 | dwop_section_names = |
3019eac3 DE |
318 | { |
319 | { ".debug_abbrev.dwo", ".zdebug_abbrev.dwo" }, | |
320 | { ".debug_info.dwo", ".zdebug_info.dwo" }, | |
321 | { ".debug_line.dwo", ".zdebug_line.dwo" }, | |
322 | { ".debug_loc.dwo", ".zdebug_loc.dwo" }, | |
09262596 DE |
323 | { ".debug_macinfo.dwo", ".zdebug_macinfo.dwo" }, |
324 | { ".debug_macro.dwo", ".zdebug_macro.dwo" }, | |
3019eac3 DE |
325 | { ".debug_str.dwo", ".zdebug_str.dwo" }, |
326 | { ".debug_str_offsets.dwo", ".zdebug_str_offsets.dwo" }, | |
327 | { ".debug_types.dwo", ".zdebug_types.dwo" }, | |
80626a55 DE |
328 | { ".debug_cu_index", ".zdebug_cu_index" }, |
329 | { ".debug_tu_index", ".zdebug_tu_index" }, | |
3019eac3 DE |
330 | }; |
331 | ||
c906108c SS |
332 | /* local data types */ |
333 | ||
107d2387 AC |
334 | /* The data in a compilation unit header, after target2host |
335 | translation, looks like this. */ | |
c906108c | 336 | struct comp_unit_head |
a738430d | 337 | { |
c764a876 | 338 | unsigned int length; |
a738430d | 339 | short version; |
a738430d MK |
340 | unsigned char addr_size; |
341 | unsigned char signed_addr_p; | |
b64f50a1 | 342 | sect_offset abbrev_offset; |
57349743 | 343 | |
a738430d MK |
344 | /* Size of file offsets; either 4 or 8. */ |
345 | unsigned int offset_size; | |
57349743 | 346 | |
a738430d MK |
347 | /* Size of the length field; either 4 or 12. */ |
348 | unsigned int initial_length_size; | |
57349743 | 349 | |
a738430d MK |
350 | /* Offset to the first byte of this compilation unit header in the |
351 | .debug_info section, for resolving relative reference dies. */ | |
b64f50a1 | 352 | sect_offset offset; |
57349743 | 353 | |
d00adf39 DE |
354 | /* Offset to first die in this cu from the start of the cu. |
355 | This will be the first byte following the compilation unit header. */ | |
b64f50a1 | 356 | cu_offset first_die_offset; |
a738430d | 357 | }; |
c906108c | 358 | |
3da10d80 KS |
359 | /* Type used for delaying computation of method physnames. |
360 | See comments for compute_delayed_physnames. */ | |
361 | struct delayed_method_info | |
362 | { | |
363 | /* The type to which the method is attached, i.e., its parent class. */ | |
364 | struct type *type; | |
365 | ||
366 | /* The index of the method in the type's function fieldlists. */ | |
367 | int fnfield_index; | |
368 | ||
369 | /* The index of the method in the fieldlist. */ | |
370 | int index; | |
371 | ||
372 | /* The name of the DIE. */ | |
373 | const char *name; | |
374 | ||
375 | /* The DIE associated with this method. */ | |
376 | struct die_info *die; | |
377 | }; | |
378 | ||
379 | typedef struct delayed_method_info delayed_method_info; | |
380 | DEF_VEC_O (delayed_method_info); | |
381 | ||
e7c27a73 DJ |
382 | /* Internal state when decoding a particular compilation unit. */ |
383 | struct dwarf2_cu | |
384 | { | |
385 | /* The objfile containing this compilation unit. */ | |
386 | struct objfile *objfile; | |
387 | ||
d00adf39 | 388 | /* The header of the compilation unit. */ |
e7c27a73 | 389 | struct comp_unit_head header; |
e142c38c | 390 | |
d00adf39 DE |
391 | /* Base address of this compilation unit. */ |
392 | CORE_ADDR base_address; | |
393 | ||
394 | /* Non-zero if base_address has been set. */ | |
395 | int base_known; | |
396 | ||
e142c38c DJ |
397 | /* The language we are debugging. */ |
398 | enum language language; | |
399 | const struct language_defn *language_defn; | |
400 | ||
b0f35d58 DL |
401 | const char *producer; |
402 | ||
e142c38c DJ |
403 | /* The generic symbol table building routines have separate lists for |
404 | file scope symbols and all all other scopes (local scopes). So | |
405 | we need to select the right one to pass to add_symbol_to_list(). | |
406 | We do it by keeping a pointer to the correct list in list_in_scope. | |
407 | ||
408 | FIXME: The original dwarf code just treated the file scope as the | |
409 | first local scope, and all other local scopes as nested local | |
410 | scopes, and worked fine. Check to see if we really need to | |
411 | distinguish these in buildsym.c. */ | |
412 | struct pending **list_in_scope; | |
413 | ||
433df2d4 DE |
414 | /* The abbrev table for this CU. |
415 | Normally this points to the abbrev table in the objfile. | |
416 | But if DWO_UNIT is non-NULL this is the abbrev table in the DWO file. */ | |
417 | struct abbrev_table *abbrev_table; | |
72bf9492 | 418 | |
b64f50a1 JK |
419 | /* Hash table holding all the loaded partial DIEs |
420 | with partial_die->offset.SECT_OFF as hash. */ | |
72bf9492 DJ |
421 | htab_t partial_dies; |
422 | ||
423 | /* Storage for things with the same lifetime as this read-in compilation | |
424 | unit, including partial DIEs. */ | |
425 | struct obstack comp_unit_obstack; | |
426 | ||
ae038cb0 DJ |
427 | /* When multiple dwarf2_cu structures are living in memory, this field |
428 | chains them all together, so that they can be released efficiently. | |
429 | We will probably also want a generation counter so that most-recently-used | |
430 | compilation units are cached... */ | |
431 | struct dwarf2_per_cu_data *read_in_chain; | |
432 | ||
433 | /* Backchain to our per_cu entry if the tree has been built. */ | |
434 | struct dwarf2_per_cu_data *per_cu; | |
435 | ||
436 | /* How many compilation units ago was this CU last referenced? */ | |
437 | int last_used; | |
438 | ||
b64f50a1 JK |
439 | /* A hash table of DIE cu_offset for following references with |
440 | die_info->offset.sect_off as hash. */ | |
51545339 | 441 | htab_t die_hash; |
10b3939b DJ |
442 | |
443 | /* Full DIEs if read in. */ | |
444 | struct die_info *dies; | |
445 | ||
446 | /* A set of pointers to dwarf2_per_cu_data objects for compilation | |
447 | units referenced by this one. Only set during full symbol processing; | |
448 | partial symbol tables do not have dependencies. */ | |
449 | htab_t dependencies; | |
450 | ||
cb1df416 DJ |
451 | /* Header data from the line table, during full symbol processing. */ |
452 | struct line_header *line_header; | |
453 | ||
3da10d80 KS |
454 | /* A list of methods which need to have physnames computed |
455 | after all type information has been read. */ | |
456 | VEC (delayed_method_info) *method_list; | |
457 | ||
96408a79 SA |
458 | /* To be copied to symtab->call_site_htab. */ |
459 | htab_t call_site_htab; | |
460 | ||
034e5797 DE |
461 | /* Non-NULL if this CU came from a DWO file. |
462 | There is an invariant here that is important to remember: | |
463 | Except for attributes copied from the top level DIE in the "main" | |
464 | (or "stub") file in preparation for reading the DWO file | |
465 | (e.g., DW_AT_GNU_addr_base), we KISS: there is only *one* CU. | |
466 | Either there isn't a DWO file (in which case this is NULL and the point | |
467 | is moot), or there is and either we're not going to read it (in which | |
468 | case this is NULL) or there is and we are reading it (in which case this | |
469 | is non-NULL). */ | |
3019eac3 DE |
470 | struct dwo_unit *dwo_unit; |
471 | ||
472 | /* The DW_AT_addr_base attribute if present, zero otherwise | |
473 | (zero is a valid value though). | |
474 | Note this value comes from the stub CU/TU's DIE. */ | |
475 | ULONGEST addr_base; | |
476 | ||
2e3cf129 DE |
477 | /* The DW_AT_ranges_base attribute if present, zero otherwise |
478 | (zero is a valid value though). | |
479 | Note this value comes from the stub CU/TU's DIE. | |
480 | Also note that the value is zero in the non-DWO case so this value can | |
ab435259 DE |
481 | be used without needing to know whether DWO files are in use or not. |
482 | N.B. This does not apply to DW_AT_ranges appearing in | |
483 | DW_TAG_compile_unit dies. This is a bit of a wart, consider if ever | |
484 | DW_AT_ranges appeared in the DW_TAG_compile_unit of DWO DIEs: then | |
485 | DW_AT_ranges_base *would* have to be applied, and we'd have to care | |
486 | whether the DW_AT_ranges attribute came from the skeleton or DWO. */ | |
2e3cf129 DE |
487 | ULONGEST ranges_base; |
488 | ||
ae038cb0 DJ |
489 | /* Mark used when releasing cached dies. */ |
490 | unsigned int mark : 1; | |
491 | ||
8be455d7 JK |
492 | /* This CU references .debug_loc. See the symtab->locations_valid field. |
493 | This test is imperfect as there may exist optimized debug code not using | |
494 | any location list and still facing inlining issues if handled as | |
495 | unoptimized code. For a future better test see GCC PR other/32998. */ | |
8be455d7 | 496 | unsigned int has_loclist : 1; |
ba919b58 | 497 | |
1b80a9fa JK |
498 | /* These cache the results for producer_is_* fields. CHECKED_PRODUCER is set |
499 | if all the producer_is_* fields are valid. This information is cached | |
500 | because profiling CU expansion showed excessive time spent in | |
501 | producer_is_gxx_lt_4_6. */ | |
ba919b58 TT |
502 | unsigned int checked_producer : 1; |
503 | unsigned int producer_is_gxx_lt_4_6 : 1; | |
1b80a9fa | 504 | unsigned int producer_is_gcc_lt_4_3 : 1; |
685b1105 | 505 | unsigned int producer_is_icc : 1; |
4d4ec4e5 TT |
506 | |
507 | /* When set, the file that we're processing is known to have | |
508 | debugging info for C++ namespaces. GCC 3.3.x did not produce | |
509 | this information, but later versions do. */ | |
510 | ||
511 | unsigned int processing_has_namespace_info : 1; | |
e7c27a73 DJ |
512 | }; |
513 | ||
10b3939b DJ |
514 | /* Persistent data held for a compilation unit, even when not |
515 | processing it. We put a pointer to this structure in the | |
28dee7f5 | 516 | read_symtab_private field of the psymtab. */ |
10b3939b | 517 | |
ae038cb0 DJ |
518 | struct dwarf2_per_cu_data |
519 | { | |
36586728 | 520 | /* The start offset and length of this compilation unit. |
45452591 | 521 | NOTE: Unlike comp_unit_head.length, this length includes |
3019eac3 DE |
522 | initial_length_size. |
523 | If the DIE refers to a DWO file, this is always of the original die, | |
524 | not the DWO file. */ | |
b64f50a1 | 525 | sect_offset offset; |
36586728 | 526 | unsigned int length; |
ae038cb0 DJ |
527 | |
528 | /* Flag indicating this compilation unit will be read in before | |
529 | any of the current compilation units are processed. */ | |
c764a876 | 530 | unsigned int queued : 1; |
ae038cb0 | 531 | |
0d99eb77 DE |
532 | /* This flag will be set when reading partial DIEs if we need to load |
533 | absolutely all DIEs for this compilation unit, instead of just the ones | |
534 | we think are interesting. It gets set if we look for a DIE in the | |
5afb4e99 DJ |
535 | hash table and don't find it. */ |
536 | unsigned int load_all_dies : 1; | |
537 | ||
3019eac3 DE |
538 | /* Non-zero if this CU is from .debug_types. */ |
539 | unsigned int is_debug_types : 1; | |
540 | ||
36586728 TT |
541 | /* Non-zero if this CU is from the .dwz file. */ |
542 | unsigned int is_dwz : 1; | |
543 | ||
3019eac3 DE |
544 | /* The section this CU/TU lives in. |
545 | If the DIE refers to a DWO file, this is always the original die, | |
546 | not the DWO file. */ | |
547 | struct dwarf2_section_info *info_or_types_section; | |
348e048f | 548 | |
17ea53c3 JK |
549 | /* Set to non-NULL iff this CU is currently loaded. When it gets freed out |
550 | of the CU cache it gets reset to NULL again. */ | |
ae038cb0 | 551 | struct dwarf2_cu *cu; |
1c379e20 | 552 | |
9cdd5dbd DE |
553 | /* The corresponding objfile. |
554 | Normally we can get the objfile from dwarf2_per_objfile. | |
555 | However we can enter this file with just a "per_cu" handle. */ | |
9291a0cd TT |
556 | struct objfile *objfile; |
557 | ||
558 | /* When using partial symbol tables, the 'psymtab' field is active. | |
559 | Otherwise the 'quick' field is active. */ | |
560 | union | |
561 | { | |
562 | /* The partial symbol table associated with this compilation unit, | |
95554aad | 563 | or NULL for unread partial units. */ |
9291a0cd TT |
564 | struct partial_symtab *psymtab; |
565 | ||
566 | /* Data needed by the "quick" functions. */ | |
567 | struct dwarf2_per_cu_quick_data *quick; | |
568 | } v; | |
95554aad | 569 | |
796a7ff8 DE |
570 | /* The CUs we import using DW_TAG_imported_unit. This is filled in |
571 | while reading psymtabs, used to compute the psymtab dependencies, | |
572 | and then cleared. Then it is filled in again while reading full | |
573 | symbols, and only deleted when the objfile is destroyed. | |
574 | ||
575 | This is also used to work around a difference between the way gold | |
576 | generates .gdb_index version <=7 and the way gdb does. Arguably this | |
577 | is a gold bug. For symbols coming from TUs, gold records in the index | |
578 | the CU that includes the TU instead of the TU itself. This breaks | |
579 | dw2_lookup_symbol: It assumes that if the index says symbol X lives | |
580 | in CU/TU Y, then one need only expand Y and a subsequent lookup in Y | |
581 | will find X. Alas TUs live in their own symtab, so after expanding CU Y | |
582 | we need to look in TU Z to find X. Fortunately, this is akin to | |
583 | DW_TAG_imported_unit, so we just use the same mechanism: For | |
584 | .gdb_index version <=7 this also records the TUs that the CU referred | |
585 | to. Concurrently with this change gdb was modified to emit version 8 | |
586 | indices so we only pay a price for gold generated indices. */ | |
587 | VEC (dwarf2_per_cu_ptr) *imported_symtabs; | |
588 | ||
589 | /* Type units are grouped by their DW_AT_stmt_list entry so that they | |
590 | can share them. If this is a TU, this points to the containing | |
591 | symtab. */ | |
592 | struct type_unit_group *type_unit_group; | |
ae038cb0 DJ |
593 | }; |
594 | ||
348e048f DE |
595 | /* Entry in the signatured_types hash table. */ |
596 | ||
597 | struct signatured_type | |
598 | { | |
42e7ad6c DE |
599 | /* The "per_cu" object of this type. |
600 | N.B.: This is the first member so that it's easy to convert pointers | |
601 | between them. */ | |
602 | struct dwarf2_per_cu_data per_cu; | |
603 | ||
3019eac3 | 604 | /* The type's signature. */ |
348e048f DE |
605 | ULONGEST signature; |
606 | ||
3019eac3 DE |
607 | /* Offset in the TU of the type's DIE, as read from the TU header. |
608 | If the definition lives in a DWO file, this value is unusable. */ | |
609 | cu_offset type_offset_in_tu; | |
610 | ||
611 | /* Offset in the section of the type's DIE. | |
612 | If the definition lives in a DWO file, this is the offset in the | |
613 | .debug_types.dwo section. | |
614 | The value is zero until the actual value is known. | |
615 | Zero is otherwise not a valid section offset. */ | |
616 | sect_offset type_offset_in_section; | |
348e048f DE |
617 | }; |
618 | ||
094b34ac DE |
619 | /* A struct that can be used as a hash key for tables based on DW_AT_stmt_list. |
620 | This includes type_unit_group and quick_file_names. */ | |
621 | ||
622 | struct stmt_list_hash | |
623 | { | |
624 | /* The DWO unit this table is from or NULL if there is none. */ | |
625 | struct dwo_unit *dwo_unit; | |
626 | ||
627 | /* Offset in .debug_line or .debug_line.dwo. */ | |
628 | sect_offset line_offset; | |
629 | }; | |
630 | ||
f4dc4d17 DE |
631 | /* Each element of dwarf2_per_objfile->type_unit_groups is a pointer to |
632 | an object of this type. */ | |
633 | ||
634 | struct type_unit_group | |
635 | { | |
636 | /* dwarf2read.c's main "handle" on the symtab. | |
637 | To simplify things we create an artificial CU that "includes" all the | |
638 | type units using this stmt_list so that the rest of the code still has | |
639 | a "per_cu" handle on the symtab. | |
640 | This PER_CU is recognized by having no section. */ | |
641 | #define IS_TYPE_UNIT_GROUP(per_cu) ((per_cu)->info_or_types_section == NULL) | |
094b34ac DE |
642 | struct dwarf2_per_cu_data per_cu; |
643 | ||
644 | union | |
645 | { | |
646 | /* The TUs that share this DW_AT_stmt_list entry. | |
647 | This is added to while parsing type units to build partial symtabs, | |
648 | and is deleted afterwards and not used again. */ | |
649 | VEC (dwarf2_per_cu_ptr) *tus; | |
f4dc4d17 | 650 | |
094b34ac DE |
651 | /* When reading the line table in "quick" functions, we need a real TU. |
652 | Any will do, we know they all share the same DW_AT_stmt_list entry. | |
653 | For simplicity's sake, we pick the first one. */ | |
654 | struct dwarf2_per_cu_data *first_tu; | |
655 | } t; | |
f4dc4d17 DE |
656 | |
657 | /* The primary symtab. | |
094b34ac DE |
658 | Type units in a group needn't all be defined in the same source file, |
659 | so we create an essentially anonymous symtab as the primary symtab. */ | |
f4dc4d17 DE |
660 | struct symtab *primary_symtab; |
661 | ||
094b34ac DE |
662 | /* The data used to construct the hash key. */ |
663 | struct stmt_list_hash hash; | |
f4dc4d17 DE |
664 | |
665 | /* The number of symtabs from the line header. | |
666 | The value here must match line_header.num_file_names. */ | |
667 | unsigned int num_symtabs; | |
668 | ||
669 | /* The symbol tables for this TU (obtained from the files listed in | |
670 | DW_AT_stmt_list). | |
671 | WARNING: The order of entries here must match the order of entries | |
672 | in the line header. After the first TU using this type_unit_group, the | |
673 | line header for the subsequent TUs is recreated from this. This is done | |
674 | because we need to use the same symtabs for each TU using the same | |
675 | DW_AT_stmt_list value. Also note that symtabs may be repeated here, | |
676 | there's no guarantee the line header doesn't have duplicate entries. */ | |
677 | struct symtab **symtabs; | |
678 | }; | |
679 | ||
80626a55 | 680 | /* These sections are what may appear in a DWO file. */ |
3019eac3 DE |
681 | |
682 | struct dwo_sections | |
683 | { | |
684 | struct dwarf2_section_info abbrev; | |
3019eac3 DE |
685 | struct dwarf2_section_info line; |
686 | struct dwarf2_section_info loc; | |
09262596 DE |
687 | struct dwarf2_section_info macinfo; |
688 | struct dwarf2_section_info macro; | |
3019eac3 DE |
689 | struct dwarf2_section_info str; |
690 | struct dwarf2_section_info str_offsets; | |
80626a55 DE |
691 | /* In the case of a virtual DWO file, these two are unused. */ |
692 | struct dwarf2_section_info info; | |
3019eac3 DE |
693 | VEC (dwarf2_section_info_def) *types; |
694 | }; | |
695 | ||
696 | /* Common bits of DWO CUs/TUs. */ | |
697 | ||
698 | struct dwo_unit | |
699 | { | |
700 | /* Backlink to the containing struct dwo_file. */ | |
701 | struct dwo_file *dwo_file; | |
702 | ||
703 | /* The "id" that distinguishes this CU/TU. | |
704 | .debug_info calls this "dwo_id", .debug_types calls this "signature". | |
705 | Since signatures came first, we stick with it for consistency. */ | |
706 | ULONGEST signature; | |
707 | ||
708 | /* The section this CU/TU lives in, in the DWO file. */ | |
709 | struct dwarf2_section_info *info_or_types_section; | |
710 | ||
711 | /* Same as dwarf2_per_cu_data:{offset,length} but for the DWO section. */ | |
712 | sect_offset offset; | |
713 | unsigned int length; | |
714 | ||
715 | /* For types, offset in the type's DIE of the type defined by this TU. */ | |
716 | cu_offset type_offset_in_tu; | |
717 | }; | |
718 | ||
80626a55 DE |
719 | /* Data for one DWO file. |
720 | This includes virtual DWO files that have been packaged into a | |
721 | DWP file. */ | |
3019eac3 DE |
722 | |
723 | struct dwo_file | |
724 | { | |
80626a55 DE |
725 | /* The DW_AT_GNU_dwo_name attribute. This is the hash key. |
726 | For virtual DWO files the name is constructed from the section offsets | |
727 | of abbrev,line,loc,str_offsets so that we combine virtual DWO files | |
728 | from related CU+TUs. */ | |
729 | const char *name; | |
3019eac3 | 730 | |
80626a55 DE |
731 | /* The bfd, when the file is open. Otherwise this is NULL. |
732 | This is unused(NULL) for virtual DWO files where we use dwp_file.dbfd. */ | |
733 | bfd *dbfd; | |
3019eac3 DE |
734 | |
735 | /* Section info for this file. */ | |
736 | struct dwo_sections sections; | |
737 | ||
738 | /* Table of CUs in the file. | |
739 | Each element is a struct dwo_unit. */ | |
740 | htab_t cus; | |
741 | ||
742 | /* Table of TUs in the file. | |
743 | Each element is a struct dwo_unit. */ | |
744 | htab_t tus; | |
745 | }; | |
746 | ||
80626a55 DE |
747 | /* These sections are what may appear in a DWP file. */ |
748 | ||
749 | struct dwp_sections | |
750 | { | |
751 | struct dwarf2_section_info str; | |
752 | struct dwarf2_section_info cu_index; | |
753 | struct dwarf2_section_info tu_index; | |
754 | /* The .debug_info.dwo, .debug_types.dwo, and other sections are referenced | |
755 | by section number. We don't need to record them here. */ | |
756 | }; | |
757 | ||
758 | /* These sections are what may appear in a virtual DWO file. */ | |
759 | ||
760 | struct virtual_dwo_sections | |
761 | { | |
762 | struct dwarf2_section_info abbrev; | |
763 | struct dwarf2_section_info line; | |
764 | struct dwarf2_section_info loc; | |
765 | struct dwarf2_section_info macinfo; | |
766 | struct dwarf2_section_info macro; | |
767 | struct dwarf2_section_info str_offsets; | |
768 | /* Each DWP hash table entry records one CU or one TU. | |
769 | That is recorded here, and copied to dwo_unit.info_or_types_section. */ | |
770 | struct dwarf2_section_info info_or_types; | |
771 | }; | |
772 | ||
773 | /* Contents of DWP hash tables. */ | |
774 | ||
775 | struct dwp_hash_table | |
776 | { | |
777 | uint32_t nr_units, nr_slots; | |
778 | const gdb_byte *hash_table, *unit_table, *section_pool; | |
779 | }; | |
780 | ||
781 | /* Data for one DWP file. */ | |
782 | ||
783 | struct dwp_file | |
784 | { | |
785 | /* Name of the file. */ | |
786 | const char *name; | |
787 | ||
788 | /* The bfd, when the file is open. Otherwise this is NULL. */ | |
789 | bfd *dbfd; | |
790 | ||
791 | /* Section info for this file. */ | |
792 | struct dwp_sections sections; | |
793 | ||
794 | /* Table of CUs in the file. */ | |
795 | const struct dwp_hash_table *cus; | |
796 | ||
797 | /* Table of TUs in the file. */ | |
798 | const struct dwp_hash_table *tus; | |
799 | ||
800 | /* Table of loaded CUs/TUs. Each entry is a struct dwo_unit *. */ | |
801 | htab_t loaded_cutus; | |
802 | ||
803 | /* Table to map ELF section numbers to their sections. */ | |
804 | unsigned int num_sections; | |
805 | asection **elf_sections; | |
806 | }; | |
807 | ||
36586728 TT |
808 | /* This represents a '.dwz' file. */ |
809 | ||
810 | struct dwz_file | |
811 | { | |
812 | /* A dwz file can only contain a few sections. */ | |
813 | struct dwarf2_section_info abbrev; | |
814 | struct dwarf2_section_info info; | |
815 | struct dwarf2_section_info str; | |
816 | struct dwarf2_section_info line; | |
817 | struct dwarf2_section_info macro; | |
2ec9a5e0 | 818 | struct dwarf2_section_info gdb_index; |
36586728 TT |
819 | |
820 | /* The dwz's BFD. */ | |
821 | bfd *dwz_bfd; | |
822 | }; | |
823 | ||
0963b4bd MS |
824 | /* Struct used to pass misc. parameters to read_die_and_children, et |
825 | al. which are used for both .debug_info and .debug_types dies. | |
826 | All parameters here are unchanging for the life of the call. This | |
dee91e82 | 827 | struct exists to abstract away the constant parameters of die reading. */ |
93311388 DE |
828 | |
829 | struct die_reader_specs | |
830 | { | |
dee91e82 | 831 | /* die_section->asection->owner. */ |
93311388 DE |
832 | bfd* abfd; |
833 | ||
834 | /* The CU of the DIE we are parsing. */ | |
835 | struct dwarf2_cu *cu; | |
836 | ||
80626a55 | 837 | /* Non-NULL if reading a DWO file (including one packaged into a DWP). */ |
3019eac3 DE |
838 | struct dwo_file *dwo_file; |
839 | ||
dee91e82 | 840 | /* The section the die comes from. |
3019eac3 | 841 | This is either .debug_info or .debug_types, or the .dwo variants. */ |
dee91e82 DE |
842 | struct dwarf2_section_info *die_section; |
843 | ||
844 | /* die_section->buffer. */ | |
845 | gdb_byte *buffer; | |
f664829e DE |
846 | |
847 | /* The end of the buffer. */ | |
848 | const gdb_byte *buffer_end; | |
93311388 DE |
849 | }; |
850 | ||
fd820528 | 851 | /* Type of function passed to init_cutu_and_read_dies, et.al. */ |
dee91e82 DE |
852 | typedef void (die_reader_func_ftype) (const struct die_reader_specs *reader, |
853 | gdb_byte *info_ptr, | |
854 | struct die_info *comp_unit_die, | |
855 | int has_children, | |
856 | void *data); | |
857 | ||
debd256d JB |
858 | /* The line number information for a compilation unit (found in the |
859 | .debug_line section) begins with a "statement program header", | |
860 | which contains the following information. */ | |
861 | struct line_header | |
862 | { | |
863 | unsigned int total_length; | |
864 | unsigned short version; | |
865 | unsigned int header_length; | |
866 | unsigned char minimum_instruction_length; | |
2dc7f7b3 | 867 | unsigned char maximum_ops_per_instruction; |
debd256d JB |
868 | unsigned char default_is_stmt; |
869 | int line_base; | |
870 | unsigned char line_range; | |
871 | unsigned char opcode_base; | |
872 | ||
873 | /* standard_opcode_lengths[i] is the number of operands for the | |
874 | standard opcode whose value is i. This means that | |
875 | standard_opcode_lengths[0] is unused, and the last meaningful | |
876 | element is standard_opcode_lengths[opcode_base - 1]. */ | |
877 | unsigned char *standard_opcode_lengths; | |
878 | ||
879 | /* The include_directories table. NOTE! These strings are not | |
880 | allocated with xmalloc; instead, they are pointers into | |
881 | debug_line_buffer. If you try to free them, `free' will get | |
882 | indigestion. */ | |
883 | unsigned int num_include_dirs, include_dirs_size; | |
884 | char **include_dirs; | |
885 | ||
886 | /* The file_names table. NOTE! These strings are not allocated | |
887 | with xmalloc; instead, they are pointers into debug_line_buffer. | |
888 | Don't try to free them directly. */ | |
889 | unsigned int num_file_names, file_names_size; | |
890 | struct file_entry | |
c906108c | 891 | { |
debd256d JB |
892 | char *name; |
893 | unsigned int dir_index; | |
894 | unsigned int mod_time; | |
895 | unsigned int length; | |
aaa75496 | 896 | int included_p; /* Non-zero if referenced by the Line Number Program. */ |
cb1df416 | 897 | struct symtab *symtab; /* The associated symbol table, if any. */ |
debd256d JB |
898 | } *file_names; |
899 | ||
900 | /* The start and end of the statement program following this | |
6502dd73 | 901 | header. These point into dwarf2_per_objfile->line_buffer. */ |
fe1b8b76 | 902 | gdb_byte *statement_program_start, *statement_program_end; |
debd256d | 903 | }; |
c906108c SS |
904 | |
905 | /* When we construct a partial symbol table entry we only | |
0963b4bd | 906 | need this much information. */ |
c906108c SS |
907 | struct partial_die_info |
908 | { | |
72bf9492 | 909 | /* Offset of this DIE. */ |
b64f50a1 | 910 | sect_offset offset; |
72bf9492 DJ |
911 | |
912 | /* DWARF-2 tag for this DIE. */ | |
913 | ENUM_BITFIELD(dwarf_tag) tag : 16; | |
914 | ||
72bf9492 DJ |
915 | /* Assorted flags describing the data found in this DIE. */ |
916 | unsigned int has_children : 1; | |
917 | unsigned int is_external : 1; | |
918 | unsigned int is_declaration : 1; | |
919 | unsigned int has_type : 1; | |
920 | unsigned int has_specification : 1; | |
921 | unsigned int has_pc_info : 1; | |
481860b3 | 922 | unsigned int may_be_inlined : 1; |
72bf9492 DJ |
923 | |
924 | /* Flag set if the SCOPE field of this structure has been | |
925 | computed. */ | |
926 | unsigned int scope_set : 1; | |
927 | ||
fa4028e9 JB |
928 | /* Flag set if the DIE has a byte_size attribute. */ |
929 | unsigned int has_byte_size : 1; | |
930 | ||
98bfdba5 PA |
931 | /* Flag set if any of the DIE's children are template arguments. */ |
932 | unsigned int has_template_arguments : 1; | |
933 | ||
abc72ce4 DE |
934 | /* Flag set if fixup_partial_die has been called on this die. */ |
935 | unsigned int fixup_called : 1; | |
936 | ||
36586728 TT |
937 | /* Flag set if DW_TAG_imported_unit uses DW_FORM_GNU_ref_alt. */ |
938 | unsigned int is_dwz : 1; | |
939 | ||
940 | /* Flag set if spec_offset uses DW_FORM_GNU_ref_alt. */ | |
941 | unsigned int spec_is_dwz : 1; | |
942 | ||
72bf9492 | 943 | /* The name of this DIE. Normally the value of DW_AT_name, but |
94af9270 | 944 | sometimes a default name for unnamed DIEs. */ |
15d034d0 | 945 | const char *name; |
72bf9492 | 946 | |
abc72ce4 DE |
947 | /* The linkage name, if present. */ |
948 | const char *linkage_name; | |
949 | ||
72bf9492 DJ |
950 | /* The scope to prepend to our children. This is generally |
951 | allocated on the comp_unit_obstack, so will disappear | |
952 | when this compilation unit leaves the cache. */ | |
15d034d0 | 953 | const char *scope; |
72bf9492 | 954 | |
95554aad TT |
955 | /* Some data associated with the partial DIE. The tag determines |
956 | which field is live. */ | |
957 | union | |
958 | { | |
959 | /* The location description associated with this DIE, if any. */ | |
960 | struct dwarf_block *locdesc; | |
961 | /* The offset of an import, for DW_TAG_imported_unit. */ | |
962 | sect_offset offset; | |
963 | } d; | |
72bf9492 DJ |
964 | |
965 | /* If HAS_PC_INFO, the PC range associated with this DIE. */ | |
c906108c SS |
966 | CORE_ADDR lowpc; |
967 | CORE_ADDR highpc; | |
72bf9492 | 968 | |
93311388 | 969 | /* Pointer into the info_buffer (or types_buffer) pointing at the target of |
72bf9492 | 970 | DW_AT_sibling, if any. */ |
abc72ce4 DE |
971 | /* NOTE: This member isn't strictly necessary, read_partial_die could |
972 | return DW_AT_sibling values to its caller load_partial_dies. */ | |
fe1b8b76 | 973 | gdb_byte *sibling; |
72bf9492 DJ |
974 | |
975 | /* If HAS_SPECIFICATION, the offset of the DIE referred to by | |
976 | DW_AT_specification (or DW_AT_abstract_origin or | |
977 | DW_AT_extension). */ | |
b64f50a1 | 978 | sect_offset spec_offset; |
72bf9492 DJ |
979 | |
980 | /* Pointers to this DIE's parent, first child, and next sibling, | |
981 | if any. */ | |
982 | struct partial_die_info *die_parent, *die_child, *die_sibling; | |
c906108c SS |
983 | }; |
984 | ||
0963b4bd | 985 | /* This data structure holds the information of an abbrev. */ |
c906108c SS |
986 | struct abbrev_info |
987 | { | |
988 | unsigned int number; /* number identifying abbrev */ | |
989 | enum dwarf_tag tag; /* dwarf tag */ | |
f3dd6933 DJ |
990 | unsigned short has_children; /* boolean */ |
991 | unsigned short num_attrs; /* number of attributes */ | |
c906108c SS |
992 | struct attr_abbrev *attrs; /* an array of attribute descriptions */ |
993 | struct abbrev_info *next; /* next in chain */ | |
994 | }; | |
995 | ||
996 | struct attr_abbrev | |
997 | { | |
9d25dd43 DE |
998 | ENUM_BITFIELD(dwarf_attribute) name : 16; |
999 | ENUM_BITFIELD(dwarf_form) form : 16; | |
c906108c SS |
1000 | }; |
1001 | ||
433df2d4 DE |
1002 | /* Size of abbrev_table.abbrev_hash_table. */ |
1003 | #define ABBREV_HASH_SIZE 121 | |
1004 | ||
1005 | /* Top level data structure to contain an abbreviation table. */ | |
1006 | ||
1007 | struct abbrev_table | |
1008 | { | |
f4dc4d17 DE |
1009 | /* Where the abbrev table came from. |
1010 | This is used as a sanity check when the table is used. */ | |
433df2d4 DE |
1011 | sect_offset offset; |
1012 | ||
1013 | /* Storage for the abbrev table. */ | |
1014 | struct obstack abbrev_obstack; | |
1015 | ||
1016 | /* Hash table of abbrevs. | |
1017 | This is an array of size ABBREV_HASH_SIZE allocated in abbrev_obstack. | |
1018 | It could be statically allocated, but the previous code didn't so we | |
1019 | don't either. */ | |
1020 | struct abbrev_info **abbrevs; | |
1021 | }; | |
1022 | ||
0963b4bd | 1023 | /* Attributes have a name and a value. */ |
b60c80d6 DJ |
1024 | struct attribute |
1025 | { | |
9d25dd43 | 1026 | ENUM_BITFIELD(dwarf_attribute) name : 16; |
8285870a JK |
1027 | ENUM_BITFIELD(dwarf_form) form : 15; |
1028 | ||
1029 | /* Has DW_STRING already been updated by dwarf2_canonicalize_name? This | |
1030 | field should be in u.str (existing only for DW_STRING) but it is kept | |
1031 | here for better struct attribute alignment. */ | |
1032 | unsigned int string_is_canonical : 1; | |
1033 | ||
b60c80d6 DJ |
1034 | union |
1035 | { | |
15d034d0 | 1036 | const char *str; |
b60c80d6 | 1037 | struct dwarf_block *blk; |
43bbcdc2 PH |
1038 | ULONGEST unsnd; |
1039 | LONGEST snd; | |
b60c80d6 | 1040 | CORE_ADDR addr; |
348e048f | 1041 | struct signatured_type *signatured_type; |
b60c80d6 DJ |
1042 | } |
1043 | u; | |
1044 | }; | |
1045 | ||
0963b4bd | 1046 | /* This data structure holds a complete die structure. */ |
c906108c SS |
1047 | struct die_info |
1048 | { | |
76815b17 DE |
1049 | /* DWARF-2 tag for this DIE. */ |
1050 | ENUM_BITFIELD(dwarf_tag) tag : 16; | |
1051 | ||
1052 | /* Number of attributes */ | |
98bfdba5 PA |
1053 | unsigned char num_attrs; |
1054 | ||
1055 | /* True if we're presently building the full type name for the | |
1056 | type derived from this DIE. */ | |
1057 | unsigned char building_fullname : 1; | |
76815b17 DE |
1058 | |
1059 | /* Abbrev number */ | |
1060 | unsigned int abbrev; | |
1061 | ||
93311388 | 1062 | /* Offset in .debug_info or .debug_types section. */ |
b64f50a1 | 1063 | sect_offset offset; |
78ba4af6 JB |
1064 | |
1065 | /* The dies in a compilation unit form an n-ary tree. PARENT | |
1066 | points to this die's parent; CHILD points to the first child of | |
1067 | this node; and all the children of a given node are chained | |
4950bc1c | 1068 | together via their SIBLING fields. */ |
639d11d3 DC |
1069 | struct die_info *child; /* Its first child, if any. */ |
1070 | struct die_info *sibling; /* Its next sibling, if any. */ | |
1071 | struct die_info *parent; /* Its parent, if any. */ | |
c906108c | 1072 | |
b60c80d6 DJ |
1073 | /* An array of attributes, with NUM_ATTRS elements. There may be |
1074 | zero, but it's not common and zero-sized arrays are not | |
1075 | sufficiently portable C. */ | |
1076 | struct attribute attrs[1]; | |
c906108c SS |
1077 | }; |
1078 | ||
0963b4bd | 1079 | /* Get at parts of an attribute structure. */ |
c906108c SS |
1080 | |
1081 | #define DW_STRING(attr) ((attr)->u.str) | |
8285870a | 1082 | #define DW_STRING_IS_CANONICAL(attr) ((attr)->string_is_canonical) |
c906108c SS |
1083 | #define DW_UNSND(attr) ((attr)->u.unsnd) |
1084 | #define DW_BLOCK(attr) ((attr)->u.blk) | |
1085 | #define DW_SND(attr) ((attr)->u.snd) | |
1086 | #define DW_ADDR(attr) ((attr)->u.addr) | |
348e048f | 1087 | #define DW_SIGNATURED_TYPE(attr) ((attr)->u.signatured_type) |
c906108c | 1088 | |
0963b4bd | 1089 | /* Blocks are a bunch of untyped bytes. */ |
c906108c SS |
1090 | struct dwarf_block |
1091 | { | |
56eb65bd | 1092 | size_t size; |
1d6edc3c JK |
1093 | |
1094 | /* Valid only if SIZE is not zero. */ | |
fe1b8b76 | 1095 | gdb_byte *data; |
c906108c SS |
1096 | }; |
1097 | ||
c906108c SS |
1098 | #ifndef ATTR_ALLOC_CHUNK |
1099 | #define ATTR_ALLOC_CHUNK 4 | |
1100 | #endif | |
1101 | ||
c906108c SS |
1102 | /* Allocate fields for structs, unions and enums in this size. */ |
1103 | #ifndef DW_FIELD_ALLOC_CHUNK | |
1104 | #define DW_FIELD_ALLOC_CHUNK 4 | |
1105 | #endif | |
1106 | ||
c906108c SS |
1107 | /* FIXME: We might want to set this from BFD via bfd_arch_bits_per_byte, |
1108 | but this would require a corresponding change in unpack_field_as_long | |
1109 | and friends. */ | |
1110 | static int bits_per_byte = 8; | |
1111 | ||
1112 | /* The routines that read and process dies for a C struct or C++ class | |
1113 | pass lists of data member fields and lists of member function fields | |
1114 | in an instance of a field_info structure, as defined below. */ | |
1115 | struct field_info | |
c5aa993b | 1116 | { |
0963b4bd | 1117 | /* List of data member and baseclasses fields. */ |
c5aa993b JM |
1118 | struct nextfield |
1119 | { | |
1120 | struct nextfield *next; | |
1121 | int accessibility; | |
1122 | int virtuality; | |
1123 | struct field field; | |
1124 | } | |
7d0ccb61 | 1125 | *fields, *baseclasses; |
c906108c | 1126 | |
7d0ccb61 | 1127 | /* Number of fields (including baseclasses). */ |
c5aa993b | 1128 | int nfields; |
c906108c | 1129 | |
c5aa993b JM |
1130 | /* Number of baseclasses. */ |
1131 | int nbaseclasses; | |
c906108c | 1132 | |
c5aa993b JM |
1133 | /* Set if the accesibility of one of the fields is not public. */ |
1134 | int non_public_fields; | |
c906108c | 1135 | |
c5aa993b JM |
1136 | /* Member function fields array, entries are allocated in the order they |
1137 | are encountered in the object file. */ | |
1138 | struct nextfnfield | |
1139 | { | |
1140 | struct nextfnfield *next; | |
1141 | struct fn_field fnfield; | |
1142 | } | |
1143 | *fnfields; | |
c906108c | 1144 | |
c5aa993b JM |
1145 | /* Member function fieldlist array, contains name of possibly overloaded |
1146 | member function, number of overloaded member functions and a pointer | |
1147 | to the head of the member function field chain. */ | |
1148 | struct fnfieldlist | |
1149 | { | |
15d034d0 | 1150 | const char *name; |
c5aa993b JM |
1151 | int length; |
1152 | struct nextfnfield *head; | |
1153 | } | |
1154 | *fnfieldlists; | |
c906108c | 1155 | |
c5aa993b JM |
1156 | /* Number of entries in the fnfieldlists array. */ |
1157 | int nfnfields; | |
98751a41 JK |
1158 | |
1159 | /* typedefs defined inside this class. TYPEDEF_FIELD_LIST contains head of | |
1160 | a NULL terminated list of TYPEDEF_FIELD_LIST_COUNT elements. */ | |
1161 | struct typedef_field_list | |
1162 | { | |
1163 | struct typedef_field field; | |
1164 | struct typedef_field_list *next; | |
1165 | } | |
1166 | *typedef_field_list; | |
1167 | unsigned typedef_field_list_count; | |
c5aa993b | 1168 | }; |
c906108c | 1169 | |
10b3939b DJ |
1170 | /* One item on the queue of compilation units to read in full symbols |
1171 | for. */ | |
1172 | struct dwarf2_queue_item | |
1173 | { | |
1174 | struct dwarf2_per_cu_data *per_cu; | |
95554aad | 1175 | enum language pretend_language; |
10b3939b DJ |
1176 | struct dwarf2_queue_item *next; |
1177 | }; | |
1178 | ||
1179 | /* The current queue. */ | |
1180 | static struct dwarf2_queue_item *dwarf2_queue, *dwarf2_queue_tail; | |
1181 | ||
ae038cb0 DJ |
1182 | /* Loaded secondary compilation units are kept in memory until they |
1183 | have not been referenced for the processing of this many | |
1184 | compilation units. Set this to zero to disable caching. Cache | |
1185 | sizes of up to at least twenty will improve startup time for | |
1186 | typical inter-CU-reference binaries, at an obvious memory cost. */ | |
1187 | static int dwarf2_max_cache_age = 5; | |
920d2a44 AC |
1188 | static void |
1189 | show_dwarf2_max_cache_age (struct ui_file *file, int from_tty, | |
1190 | struct cmd_list_element *c, const char *value) | |
1191 | { | |
3e43a32a MS |
1192 | fprintf_filtered (file, _("The upper bound on the age of cached " |
1193 | "dwarf2 compilation units is %s.\n"), | |
920d2a44 AC |
1194 | value); |
1195 | } | |
1196 | ||
ae038cb0 | 1197 | |
0963b4bd | 1198 | /* Various complaints about symbol reading that don't abort the process. */ |
c906108c | 1199 | |
4d3c2250 KB |
1200 | static void |
1201 | dwarf2_statement_list_fits_in_line_number_section_complaint (void) | |
2e276125 | 1202 | { |
4d3c2250 | 1203 | complaint (&symfile_complaints, |
e2e0b3e5 | 1204 | _("statement list doesn't fit in .debug_line section")); |
4d3c2250 KB |
1205 | } |
1206 | ||
25e43795 DJ |
1207 | static void |
1208 | dwarf2_debug_line_missing_file_complaint (void) | |
1209 | { | |
1210 | complaint (&symfile_complaints, | |
1211 | _(".debug_line section has line data without a file")); | |
1212 | } | |
1213 | ||
59205f5a JB |
1214 | static void |
1215 | dwarf2_debug_line_missing_end_sequence_complaint (void) | |
1216 | { | |
1217 | complaint (&symfile_complaints, | |
3e43a32a MS |
1218 | _(".debug_line section has line " |
1219 | "program sequence without an end")); | |
59205f5a JB |
1220 | } |
1221 | ||
4d3c2250 KB |
1222 | static void |
1223 | dwarf2_complex_location_expr_complaint (void) | |
2e276125 | 1224 | { |
e2e0b3e5 | 1225 | complaint (&symfile_complaints, _("location expression too complex")); |
4d3c2250 KB |
1226 | } |
1227 | ||
4d3c2250 KB |
1228 | static void |
1229 | dwarf2_const_value_length_mismatch_complaint (const char *arg1, int arg2, | |
1230 | int arg3) | |
2e276125 | 1231 | { |
4d3c2250 | 1232 | complaint (&symfile_complaints, |
3e43a32a MS |
1233 | _("const value length mismatch for '%s', got %d, expected %d"), |
1234 | arg1, arg2, arg3); | |
4d3c2250 KB |
1235 | } |
1236 | ||
1237 | static void | |
f664829e | 1238 | dwarf2_section_buffer_overflow_complaint (struct dwarf2_section_info *section) |
2e276125 | 1239 | { |
4d3c2250 | 1240 | complaint (&symfile_complaints, |
f664829e DE |
1241 | _("debug info runs off end of %s section" |
1242 | " [in module %s]"), | |
1243 | section->asection->name, | |
1244 | bfd_get_filename (section->asection->owner)); | |
4d3c2250 KB |
1245 | } |
1246 | ||
1247 | static void | |
1248 | dwarf2_macro_malformed_definition_complaint (const char *arg1) | |
8e19ed76 | 1249 | { |
4d3c2250 | 1250 | complaint (&symfile_complaints, |
3e43a32a MS |
1251 | _("macro debug info contains a " |
1252 | "malformed macro definition:\n`%s'"), | |
4d3c2250 KB |
1253 | arg1); |
1254 | } | |
1255 | ||
1256 | static void | |
1257 | dwarf2_invalid_attrib_class_complaint (const char *arg1, const char *arg2) | |
8b2dbe47 | 1258 | { |
4d3c2250 | 1259 | complaint (&symfile_complaints, |
3e43a32a MS |
1260 | _("invalid attribute class or form for '%s' in '%s'"), |
1261 | arg1, arg2); | |
4d3c2250 | 1262 | } |
c906108c | 1263 | |
c906108c SS |
1264 | /* local function prototypes */ |
1265 | ||
4efb68b1 | 1266 | static void dwarf2_locate_sections (bfd *, asection *, void *); |
c906108c | 1267 | |
aaa75496 JB |
1268 | static void dwarf2_create_include_psymtab (char *, struct partial_symtab *, |
1269 | struct objfile *); | |
1270 | ||
918dd910 JK |
1271 | static void dwarf2_find_base_address (struct die_info *die, |
1272 | struct dwarf2_cu *cu); | |
1273 | ||
c67a9c90 | 1274 | static void dwarf2_build_psymtabs_hard (struct objfile *); |
c906108c | 1275 | |
72bf9492 DJ |
1276 | static void scan_partial_symbols (struct partial_die_info *, |
1277 | CORE_ADDR *, CORE_ADDR *, | |
5734ee8b | 1278 | int, struct dwarf2_cu *); |
c906108c | 1279 | |
72bf9492 DJ |
1280 | static void add_partial_symbol (struct partial_die_info *, |
1281 | struct dwarf2_cu *); | |
63d06c5c | 1282 | |
72bf9492 DJ |
1283 | static void add_partial_namespace (struct partial_die_info *pdi, |
1284 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 1285 | int need_pc, struct dwarf2_cu *cu); |
63d06c5c | 1286 | |
5d7cb8df JK |
1287 | static void add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, |
1288 | CORE_ADDR *highpc, int need_pc, | |
1289 | struct dwarf2_cu *cu); | |
1290 | ||
72bf9492 DJ |
1291 | static void add_partial_enumeration (struct partial_die_info *enum_pdi, |
1292 | struct dwarf2_cu *cu); | |
91c24f0a | 1293 | |
bc30ff58 JB |
1294 | static void add_partial_subprogram (struct partial_die_info *pdi, |
1295 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 1296 | int need_pc, struct dwarf2_cu *cu); |
bc30ff58 | 1297 | |
257e7a09 YQ |
1298 | static void dwarf2_read_symtab (struct partial_symtab *, |
1299 | struct objfile *); | |
c906108c | 1300 | |
a14ed312 | 1301 | static void psymtab_to_symtab_1 (struct partial_symtab *); |
c906108c | 1302 | |
433df2d4 DE |
1303 | static struct abbrev_info *abbrev_table_lookup_abbrev |
1304 | (const struct abbrev_table *, unsigned int); | |
1305 | ||
1306 | static struct abbrev_table *abbrev_table_read_table | |
1307 | (struct dwarf2_section_info *, sect_offset); | |
1308 | ||
1309 | static void abbrev_table_free (struct abbrev_table *); | |
1310 | ||
f4dc4d17 DE |
1311 | static void abbrev_table_free_cleanup (void *); |
1312 | ||
dee91e82 DE |
1313 | static void dwarf2_read_abbrevs (struct dwarf2_cu *, |
1314 | struct dwarf2_section_info *); | |
c906108c | 1315 | |
f3dd6933 | 1316 | static void dwarf2_free_abbrev_table (void *); |
c906108c | 1317 | |
6caca83c CC |
1318 | static unsigned int peek_abbrev_code (bfd *, gdb_byte *); |
1319 | ||
dee91e82 DE |
1320 | static struct partial_die_info *load_partial_dies |
1321 | (const struct die_reader_specs *, gdb_byte *, int); | |
72bf9492 | 1322 | |
dee91e82 DE |
1323 | static gdb_byte *read_partial_die (const struct die_reader_specs *, |
1324 | struct partial_die_info *, | |
1325 | struct abbrev_info *, | |
1326 | unsigned int, | |
1327 | gdb_byte *); | |
c906108c | 1328 | |
36586728 | 1329 | static struct partial_die_info *find_partial_die (sect_offset, int, |
10b3939b | 1330 | struct dwarf2_cu *); |
72bf9492 DJ |
1331 | |
1332 | static void fixup_partial_die (struct partial_die_info *, | |
1333 | struct dwarf2_cu *); | |
1334 | ||
dee91e82 DE |
1335 | static gdb_byte *read_attribute (const struct die_reader_specs *, |
1336 | struct attribute *, struct attr_abbrev *, | |
1337 | gdb_byte *); | |
a8329558 | 1338 | |
a1855c1d | 1339 | static unsigned int read_1_byte (bfd *, const gdb_byte *); |
c906108c | 1340 | |
a1855c1d | 1341 | static int read_1_signed_byte (bfd *, const gdb_byte *); |
c906108c | 1342 | |
a1855c1d | 1343 | static unsigned int read_2_bytes (bfd *, const gdb_byte *); |
c906108c | 1344 | |
a1855c1d | 1345 | static unsigned int read_4_bytes (bfd *, const gdb_byte *); |
c906108c | 1346 | |
a1855c1d | 1347 | static ULONGEST read_8_bytes (bfd *, const gdb_byte *); |
c906108c | 1348 | |
fe1b8b76 | 1349 | static CORE_ADDR read_address (bfd *, gdb_byte *ptr, struct dwarf2_cu *, |
891d2f0b | 1350 | unsigned int *); |
c906108c | 1351 | |
c764a876 DE |
1352 | static LONGEST read_initial_length (bfd *, gdb_byte *, unsigned int *); |
1353 | ||
1354 | static LONGEST read_checked_initial_length_and_offset | |
1355 | (bfd *, gdb_byte *, const struct comp_unit_head *, | |
1356 | unsigned int *, unsigned int *); | |
613e1657 | 1357 | |
fe1b8b76 | 1358 | static LONGEST read_offset (bfd *, gdb_byte *, const struct comp_unit_head *, |
c764a876 DE |
1359 | unsigned int *); |
1360 | ||
1361 | static LONGEST read_offset_1 (bfd *, gdb_byte *, unsigned int); | |
613e1657 | 1362 | |
f4dc4d17 DE |
1363 | static sect_offset read_abbrev_offset (struct dwarf2_section_info *, |
1364 | sect_offset); | |
1365 | ||
fe1b8b76 | 1366 | static gdb_byte *read_n_bytes (bfd *, gdb_byte *, unsigned int); |
c906108c | 1367 | |
9b1c24c8 | 1368 | static char *read_direct_string (bfd *, gdb_byte *, unsigned int *); |
c906108c | 1369 | |
fe1b8b76 JB |
1370 | static char *read_indirect_string (bfd *, gdb_byte *, |
1371 | const struct comp_unit_head *, | |
1372 | unsigned int *); | |
4bdf3d34 | 1373 | |
36586728 TT |
1374 | static char *read_indirect_string_from_dwz (struct dwz_file *, LONGEST); |
1375 | ||
12df843f | 1376 | static ULONGEST read_unsigned_leb128 (bfd *, gdb_byte *, unsigned int *); |
c906108c | 1377 | |
12df843f | 1378 | static LONGEST read_signed_leb128 (bfd *, gdb_byte *, unsigned int *); |
c906108c | 1379 | |
3019eac3 DE |
1380 | static CORE_ADDR read_addr_index_from_leb128 (struct dwarf2_cu *, gdb_byte *, |
1381 | unsigned int *); | |
1382 | ||
1383 | static char *read_str_index (const struct die_reader_specs *reader, | |
1384 | struct dwarf2_cu *cu, ULONGEST str_index); | |
1385 | ||
e142c38c | 1386 | static void set_cu_language (unsigned int, struct dwarf2_cu *); |
c906108c | 1387 | |
e142c38c DJ |
1388 | static struct attribute *dwarf2_attr (struct die_info *, unsigned int, |
1389 | struct dwarf2_cu *); | |
c906108c | 1390 | |
348e048f | 1391 | static struct attribute *dwarf2_attr_no_follow (struct die_info *, |
45e58e77 | 1392 | unsigned int); |
348e048f | 1393 | |
05cf31d1 JB |
1394 | static int dwarf2_flag_true_p (struct die_info *die, unsigned name, |
1395 | struct dwarf2_cu *cu); | |
1396 | ||
e142c38c | 1397 | static int die_is_declaration (struct die_info *, struct dwarf2_cu *cu); |
3ca72b44 | 1398 | |
e142c38c | 1399 | static struct die_info *die_specification (struct die_info *die, |
f2f0e013 | 1400 | struct dwarf2_cu **); |
63d06c5c | 1401 | |
debd256d JB |
1402 | static void free_line_header (struct line_header *lh); |
1403 | ||
aaa75496 JB |
1404 | static void add_file_name (struct line_header *, char *, unsigned int, |
1405 | unsigned int, unsigned int); | |
1406 | ||
3019eac3 DE |
1407 | static struct line_header *dwarf_decode_line_header (unsigned int offset, |
1408 | struct dwarf2_cu *cu); | |
debd256d | 1409 | |
f3f5162e DE |
1410 | static void dwarf_decode_lines (struct line_header *, const char *, |
1411 | struct dwarf2_cu *, struct partial_symtab *, | |
1412 | int); | |
c906108c | 1413 | |
72b9f47f | 1414 | static void dwarf2_start_subfile (char *, const char *, const char *); |
c906108c | 1415 | |
f4dc4d17 | 1416 | static void dwarf2_start_symtab (struct dwarf2_cu *, |
15d034d0 | 1417 | const char *, const char *, CORE_ADDR); |
f4dc4d17 | 1418 | |
a14ed312 | 1419 | static struct symbol *new_symbol (struct die_info *, struct type *, |
e7c27a73 | 1420 | struct dwarf2_cu *); |
c906108c | 1421 | |
34eaf542 TT |
1422 | static struct symbol *new_symbol_full (struct die_info *, struct type *, |
1423 | struct dwarf2_cu *, struct symbol *); | |
1424 | ||
a14ed312 | 1425 | static void dwarf2_const_value (struct attribute *, struct symbol *, |
e7c27a73 | 1426 | struct dwarf2_cu *); |
c906108c | 1427 | |
98bfdba5 PA |
1428 | static void dwarf2_const_value_attr (struct attribute *attr, |
1429 | struct type *type, | |
1430 | const char *name, | |
1431 | struct obstack *obstack, | |
12df843f | 1432 | struct dwarf2_cu *cu, LONGEST *value, |
98bfdba5 PA |
1433 | gdb_byte **bytes, |
1434 | struct dwarf2_locexpr_baton **baton); | |
2df3850c | 1435 | |
e7c27a73 | 1436 | static struct type *die_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 1437 | |
b4ba55a1 JB |
1438 | static int need_gnat_info (struct dwarf2_cu *); |
1439 | ||
3e43a32a MS |
1440 | static struct type *die_descriptive_type (struct die_info *, |
1441 | struct dwarf2_cu *); | |
b4ba55a1 JB |
1442 | |
1443 | static void set_descriptive_type (struct type *, struct die_info *, | |
1444 | struct dwarf2_cu *); | |
1445 | ||
e7c27a73 DJ |
1446 | static struct type *die_containing_type (struct die_info *, |
1447 | struct dwarf2_cu *); | |
c906108c | 1448 | |
673bfd45 DE |
1449 | static struct type *lookup_die_type (struct die_info *, struct attribute *, |
1450 | struct dwarf2_cu *); | |
c906108c | 1451 | |
f792889a | 1452 | static struct type *read_type_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1453 | |
673bfd45 DE |
1454 | static struct type *read_type_die_1 (struct die_info *, struct dwarf2_cu *); |
1455 | ||
0d5cff50 | 1456 | static const char *determine_prefix (struct die_info *die, struct dwarf2_cu *); |
63d06c5c | 1457 | |
6e70227d | 1458 | static char *typename_concat (struct obstack *obs, const char *prefix, |
f55ee35c JK |
1459 | const char *suffix, int physname, |
1460 | struct dwarf2_cu *cu); | |
63d06c5c | 1461 | |
e7c27a73 | 1462 | static void read_file_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1463 | |
348e048f DE |
1464 | static void read_type_unit_scope (struct die_info *, struct dwarf2_cu *); |
1465 | ||
e7c27a73 | 1466 | static void read_func_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1467 | |
e7c27a73 | 1468 | static void read_lexical_block_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1469 | |
96408a79 SA |
1470 | static void read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu); |
1471 | ||
ff013f42 JK |
1472 | static int dwarf2_ranges_read (unsigned, CORE_ADDR *, CORE_ADDR *, |
1473 | struct dwarf2_cu *, struct partial_symtab *); | |
1474 | ||
a14ed312 | 1475 | static int dwarf2_get_pc_bounds (struct die_info *, |
d85a05f0 DJ |
1476 | CORE_ADDR *, CORE_ADDR *, struct dwarf2_cu *, |
1477 | struct partial_symtab *); | |
c906108c | 1478 | |
fae299cd DC |
1479 | static void get_scope_pc_bounds (struct die_info *, |
1480 | CORE_ADDR *, CORE_ADDR *, | |
1481 | struct dwarf2_cu *); | |
1482 | ||
801e3a5b JB |
1483 | static void dwarf2_record_block_ranges (struct die_info *, struct block *, |
1484 | CORE_ADDR, struct dwarf2_cu *); | |
1485 | ||
a14ed312 | 1486 | static void dwarf2_add_field (struct field_info *, struct die_info *, |
e7c27a73 | 1487 | struct dwarf2_cu *); |
c906108c | 1488 | |
a14ed312 | 1489 | static void dwarf2_attach_fields_to_type (struct field_info *, |
e7c27a73 | 1490 | struct type *, struct dwarf2_cu *); |
c906108c | 1491 | |
a14ed312 | 1492 | static void dwarf2_add_member_fn (struct field_info *, |
e26fb1d7 | 1493 | struct die_info *, struct type *, |
e7c27a73 | 1494 | struct dwarf2_cu *); |
c906108c | 1495 | |
a14ed312 | 1496 | static void dwarf2_attach_fn_fields_to_type (struct field_info *, |
3e43a32a MS |
1497 | struct type *, |
1498 | struct dwarf2_cu *); | |
c906108c | 1499 | |
134d01f1 | 1500 | static void process_structure_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1501 | |
e7c27a73 | 1502 | static void read_common_block (struct die_info *, struct dwarf2_cu *); |
c906108c | 1503 | |
e7c27a73 | 1504 | static void read_namespace (struct die_info *die, struct dwarf2_cu *); |
d9fa45fe | 1505 | |
5d7cb8df JK |
1506 | static void read_module (struct die_info *die, struct dwarf2_cu *cu); |
1507 | ||
27aa8d6a SW |
1508 | static void read_import_statement (struct die_info *die, struct dwarf2_cu *); |
1509 | ||
f55ee35c JK |
1510 | static struct type *read_module_type (struct die_info *die, |
1511 | struct dwarf2_cu *cu); | |
1512 | ||
38d518c9 | 1513 | static const char *namespace_name (struct die_info *die, |
e142c38c | 1514 | int *is_anonymous, struct dwarf2_cu *); |
38d518c9 | 1515 | |
134d01f1 | 1516 | static void process_enumeration_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1517 | |
e7c27a73 | 1518 | static CORE_ADDR decode_locdesc (struct dwarf_block *, struct dwarf2_cu *); |
c906108c | 1519 | |
6e70227d | 1520 | static enum dwarf_array_dim_ordering read_array_order (struct die_info *, |
7ca2d3a3 DL |
1521 | struct dwarf2_cu *); |
1522 | ||
dee91e82 | 1523 | static struct die_info *read_die_and_children (const struct die_reader_specs *, |
93311388 | 1524 | gdb_byte *info_ptr, |
fe1b8b76 | 1525 | gdb_byte **new_info_ptr, |
639d11d3 DC |
1526 | struct die_info *parent); |
1527 | ||
dee91e82 | 1528 | static struct die_info *read_die_and_siblings (const struct die_reader_specs *, |
93311388 | 1529 | gdb_byte *info_ptr, |
fe1b8b76 | 1530 | gdb_byte **new_info_ptr, |
639d11d3 DC |
1531 | struct die_info *parent); |
1532 | ||
3019eac3 DE |
1533 | static gdb_byte *read_full_die_1 (const struct die_reader_specs *, |
1534 | struct die_info **, gdb_byte *, int *, int); | |
1535 | ||
dee91e82 DE |
1536 | static gdb_byte *read_full_die (const struct die_reader_specs *, |
1537 | struct die_info **, gdb_byte *, int *); | |
93311388 | 1538 | |
e7c27a73 | 1539 | static void process_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1540 | |
15d034d0 TT |
1541 | static const char *dwarf2_canonicalize_name (const char *, struct dwarf2_cu *, |
1542 | struct obstack *); | |
71c25dea | 1543 | |
15d034d0 | 1544 | static const char *dwarf2_name (struct die_info *die, struct dwarf2_cu *); |
9219021c | 1545 | |
15d034d0 | 1546 | static const char *dwarf2_full_name (const char *name, |
98bfdba5 PA |
1547 | struct die_info *die, |
1548 | struct dwarf2_cu *cu); | |
1549 | ||
e142c38c | 1550 | static struct die_info *dwarf2_extension (struct die_info *die, |
f2f0e013 | 1551 | struct dwarf2_cu **); |
9219021c | 1552 | |
f39c6ffd | 1553 | static const char *dwarf_tag_name (unsigned int); |
c906108c | 1554 | |
f39c6ffd | 1555 | static const char *dwarf_attr_name (unsigned int); |
c906108c | 1556 | |
f39c6ffd | 1557 | static const char *dwarf_form_name (unsigned int); |
c906108c | 1558 | |
a14ed312 | 1559 | static char *dwarf_bool_name (unsigned int); |
c906108c | 1560 | |
f39c6ffd | 1561 | static const char *dwarf_type_encoding_name (unsigned int); |
c906108c | 1562 | |
f9aca02d | 1563 | static struct die_info *sibling_die (struct die_info *); |
c906108c | 1564 | |
d97bc12b DE |
1565 | static void dump_die_shallow (struct ui_file *, int indent, struct die_info *); |
1566 | ||
1567 | static void dump_die_for_error (struct die_info *); | |
1568 | ||
1569 | static void dump_die_1 (struct ui_file *, int level, int max_level, | |
1570 | struct die_info *); | |
c906108c | 1571 | |
d97bc12b | 1572 | /*static*/ void dump_die (struct die_info *, int max_level); |
c906108c | 1573 | |
51545339 | 1574 | static void store_in_ref_table (struct die_info *, |
10b3939b | 1575 | struct dwarf2_cu *); |
c906108c | 1576 | |
93311388 DE |
1577 | static int is_ref_attr (struct attribute *); |
1578 | ||
b64f50a1 | 1579 | static sect_offset dwarf2_get_ref_die_offset (struct attribute *); |
c906108c | 1580 | |
43bbcdc2 | 1581 | static LONGEST dwarf2_get_attr_constant_value (struct attribute *, int); |
a02abb62 | 1582 | |
348e048f DE |
1583 | static struct die_info *follow_die_ref_or_sig (struct die_info *, |
1584 | struct attribute *, | |
1585 | struct dwarf2_cu **); | |
1586 | ||
10b3939b DJ |
1587 | static struct die_info *follow_die_ref (struct die_info *, |
1588 | struct attribute *, | |
f2f0e013 | 1589 | struct dwarf2_cu **); |
c906108c | 1590 | |
348e048f DE |
1591 | static struct die_info *follow_die_sig (struct die_info *, |
1592 | struct attribute *, | |
1593 | struct dwarf2_cu **); | |
1594 | ||
6c83ed52 TT |
1595 | static struct signatured_type *lookup_signatured_type_at_offset |
1596 | (struct objfile *objfile, | |
b64f50a1 | 1597 | struct dwarf2_section_info *section, sect_offset offset); |
6c83ed52 | 1598 | |
e5fe5e75 | 1599 | static void load_full_type_unit (struct dwarf2_per_cu_data *per_cu); |
348e048f | 1600 | |
52dc124a | 1601 | static void read_signatured_type (struct signatured_type *); |
348e048f | 1602 | |
f4dc4d17 | 1603 | static struct type_unit_group *get_type_unit_group |
094b34ac | 1604 | (struct dwarf2_cu *, struct attribute *); |
f4dc4d17 DE |
1605 | |
1606 | static void build_type_unit_groups (die_reader_func_ftype *, void *); | |
1607 | ||
c906108c SS |
1608 | /* memory allocation interface */ |
1609 | ||
7b5a2f43 | 1610 | static struct dwarf_block *dwarf_alloc_block (struct dwarf2_cu *); |
c906108c | 1611 | |
b60c80d6 | 1612 | static struct die_info *dwarf_alloc_die (struct dwarf2_cu *, int); |
c906108c | 1613 | |
09262596 | 1614 | static void dwarf_decode_macros (struct dwarf2_cu *, unsigned int, |
15d034d0 | 1615 | const char *, int); |
2e276125 | 1616 | |
8e19ed76 PS |
1617 | static int attr_form_is_block (struct attribute *); |
1618 | ||
3690dd37 JB |
1619 | static int attr_form_is_section_offset (struct attribute *); |
1620 | ||
1621 | static int attr_form_is_constant (struct attribute *); | |
1622 | ||
8cf6f0b1 TT |
1623 | static void fill_in_loclist_baton (struct dwarf2_cu *cu, |
1624 | struct dwarf2_loclist_baton *baton, | |
1625 | struct attribute *attr); | |
1626 | ||
93e7bd98 DJ |
1627 | static void dwarf2_symbol_mark_computed (struct attribute *attr, |
1628 | struct symbol *sym, | |
1629 | struct dwarf2_cu *cu); | |
4c2df51b | 1630 | |
dee91e82 DE |
1631 | static gdb_byte *skip_one_die (const struct die_reader_specs *reader, |
1632 | gdb_byte *info_ptr, | |
1633 | struct abbrev_info *abbrev); | |
4bb7a0a7 | 1634 | |
72bf9492 DJ |
1635 | static void free_stack_comp_unit (void *); |
1636 | ||
72bf9492 DJ |
1637 | static hashval_t partial_die_hash (const void *item); |
1638 | ||
1639 | static int partial_die_eq (const void *item_lhs, const void *item_rhs); | |
1640 | ||
ae038cb0 | 1641 | static struct dwarf2_per_cu_data *dwarf2_find_containing_comp_unit |
36586728 | 1642 | (sect_offset offset, unsigned int offset_in_dwz, struct objfile *objfile); |
ae038cb0 | 1643 | |
9816fde3 | 1644 | static void init_one_comp_unit (struct dwarf2_cu *cu, |
23745b47 | 1645 | struct dwarf2_per_cu_data *per_cu); |
9816fde3 JK |
1646 | |
1647 | static void prepare_one_comp_unit (struct dwarf2_cu *cu, | |
95554aad TT |
1648 | struct die_info *comp_unit_die, |
1649 | enum language pretend_language); | |
93311388 | 1650 | |
68dc6402 | 1651 | static void free_heap_comp_unit (void *); |
ae038cb0 DJ |
1652 | |
1653 | static void free_cached_comp_units (void *); | |
1654 | ||
1655 | static void age_cached_comp_units (void); | |
1656 | ||
dee91e82 | 1657 | static void free_one_cached_comp_unit (struct dwarf2_per_cu_data *); |
ae038cb0 | 1658 | |
f792889a DJ |
1659 | static struct type *set_die_type (struct die_info *, struct type *, |
1660 | struct dwarf2_cu *); | |
1c379e20 | 1661 | |
ae038cb0 DJ |
1662 | static void create_all_comp_units (struct objfile *); |
1663 | ||
0e50663e | 1664 | static int create_all_type_units (struct objfile *); |
1fd400ff | 1665 | |
95554aad TT |
1666 | static void load_full_comp_unit (struct dwarf2_per_cu_data *, |
1667 | enum language); | |
10b3939b | 1668 | |
95554aad TT |
1669 | static void process_full_comp_unit (struct dwarf2_per_cu_data *, |
1670 | enum language); | |
10b3939b | 1671 | |
f4dc4d17 DE |
1672 | static void process_full_type_unit (struct dwarf2_per_cu_data *, |
1673 | enum language); | |
1674 | ||
10b3939b DJ |
1675 | static void dwarf2_add_dependence (struct dwarf2_cu *, |
1676 | struct dwarf2_per_cu_data *); | |
1677 | ||
ae038cb0 DJ |
1678 | static void dwarf2_mark (struct dwarf2_cu *); |
1679 | ||
1680 | static void dwarf2_clear_marks (struct dwarf2_per_cu_data *); | |
1681 | ||
b64f50a1 | 1682 | static struct type *get_die_type_at_offset (sect_offset, |
673bfd45 DE |
1683 | struct dwarf2_per_cu_data *per_cu); |
1684 | ||
f792889a | 1685 | static struct type *get_die_type (struct die_info *die, struct dwarf2_cu *cu); |
72019c9c | 1686 | |
9291a0cd TT |
1687 | static void dwarf2_release_queue (void *dummy); |
1688 | ||
95554aad TT |
1689 | static void queue_comp_unit (struct dwarf2_per_cu_data *per_cu, |
1690 | enum language pretend_language); | |
1691 | ||
1692 | static int maybe_queue_comp_unit (struct dwarf2_cu *this_cu, | |
1693 | struct dwarf2_per_cu_data *per_cu, | |
1694 | enum language pretend_language); | |
9291a0cd | 1695 | |
a0f42c21 | 1696 | static void process_queue (void); |
9291a0cd TT |
1697 | |
1698 | static void find_file_and_directory (struct die_info *die, | |
1699 | struct dwarf2_cu *cu, | |
15d034d0 | 1700 | const char **name, const char **comp_dir); |
9291a0cd TT |
1701 | |
1702 | static char *file_full_name (int file, struct line_header *lh, | |
1703 | const char *comp_dir); | |
1704 | ||
36586728 TT |
1705 | static gdb_byte *read_and_check_comp_unit_head |
1706 | (struct comp_unit_head *header, | |
1707 | struct dwarf2_section_info *section, | |
1708 | struct dwarf2_section_info *abbrev_section, gdb_byte *info_ptr, | |
1709 | int is_debug_types_section); | |
1710 | ||
fd820528 | 1711 | static void init_cutu_and_read_dies |
f4dc4d17 DE |
1712 | (struct dwarf2_per_cu_data *this_cu, struct abbrev_table *abbrev_table, |
1713 | int use_existing_cu, int keep, | |
3019eac3 DE |
1714 | die_reader_func_ftype *die_reader_func, void *data); |
1715 | ||
dee91e82 DE |
1716 | static void init_cutu_and_read_dies_simple |
1717 | (struct dwarf2_per_cu_data *this_cu, | |
1718 | die_reader_func_ftype *die_reader_func, void *data); | |
9291a0cd | 1719 | |
673bfd45 | 1720 | static htab_t allocate_signatured_type_table (struct objfile *objfile); |
1fd400ff | 1721 | |
3019eac3 DE |
1722 | static htab_t allocate_dwo_unit_table (struct objfile *objfile); |
1723 | ||
1724 | static struct dwo_unit *lookup_dwo_comp_unit | |
a1855c1d | 1725 | (struct dwarf2_per_cu_data *, const char *, const char *, ULONGEST); |
3019eac3 DE |
1726 | |
1727 | static struct dwo_unit *lookup_dwo_type_unit | |
a1855c1d | 1728 | (struct signatured_type *, const char *, const char *); |
3019eac3 DE |
1729 | |
1730 | static void free_dwo_file_cleanup (void *); | |
1731 | ||
95554aad TT |
1732 | static void process_cu_includes (void); |
1733 | ||
1b80a9fa JK |
1734 | static void check_producer (struct dwarf2_cu *cu); |
1735 | ||
9291a0cd TT |
1736 | #if WORDS_BIGENDIAN |
1737 | ||
1738 | /* Convert VALUE between big- and little-endian. */ | |
1739 | static offset_type | |
1740 | byte_swap (offset_type value) | |
1741 | { | |
1742 | offset_type result; | |
1743 | ||
1744 | result = (value & 0xff) << 24; | |
1745 | result |= (value & 0xff00) << 8; | |
1746 | result |= (value & 0xff0000) >> 8; | |
1747 | result |= (value & 0xff000000) >> 24; | |
1748 | return result; | |
1749 | } | |
1750 | ||
1751 | #define MAYBE_SWAP(V) byte_swap (V) | |
1752 | ||
1753 | #else | |
1754 | #define MAYBE_SWAP(V) (V) | |
1755 | #endif /* WORDS_BIGENDIAN */ | |
1756 | ||
1757 | /* The suffix for an index file. */ | |
1758 | #define INDEX_SUFFIX ".gdb-index" | |
1759 | ||
15d034d0 | 1760 | static const char *dwarf2_physname (const char *name, struct die_info *die, |
3da10d80 KS |
1761 | struct dwarf2_cu *cu); |
1762 | ||
c906108c | 1763 | /* Try to locate the sections we need for DWARF 2 debugging |
251d32d9 TG |
1764 | information and return true if we have enough to do something. |
1765 | NAMES points to the dwarf2 section names, or is NULL if the standard | |
1766 | ELF names are used. */ | |
c906108c SS |
1767 | |
1768 | int | |
251d32d9 TG |
1769 | dwarf2_has_info (struct objfile *objfile, |
1770 | const struct dwarf2_debug_sections *names) | |
c906108c | 1771 | { |
be391dca TT |
1772 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); |
1773 | if (!dwarf2_per_objfile) | |
1774 | { | |
1775 | /* Initialize per-objfile state. */ | |
1776 | struct dwarf2_per_objfile *data | |
1777 | = obstack_alloc (&objfile->objfile_obstack, sizeof (*data)); | |
9a619af0 | 1778 | |
be391dca TT |
1779 | memset (data, 0, sizeof (*data)); |
1780 | set_objfile_data (objfile, dwarf2_objfile_data_key, data); | |
1781 | dwarf2_per_objfile = data; | |
6502dd73 | 1782 | |
251d32d9 TG |
1783 | bfd_map_over_sections (objfile->obfd, dwarf2_locate_sections, |
1784 | (void *) names); | |
be391dca TT |
1785 | dwarf2_per_objfile->objfile = objfile; |
1786 | } | |
1787 | return (dwarf2_per_objfile->info.asection != NULL | |
1788 | && dwarf2_per_objfile->abbrev.asection != NULL); | |
c906108c SS |
1789 | } |
1790 | ||
251d32d9 TG |
1791 | /* When loading sections, we look either for uncompressed section or for |
1792 | compressed section names. */ | |
233a11ab CS |
1793 | |
1794 | static int | |
251d32d9 TG |
1795 | section_is_p (const char *section_name, |
1796 | const struct dwarf2_section_names *names) | |
233a11ab | 1797 | { |
251d32d9 TG |
1798 | if (names->normal != NULL |
1799 | && strcmp (section_name, names->normal) == 0) | |
1800 | return 1; | |
1801 | if (names->compressed != NULL | |
1802 | && strcmp (section_name, names->compressed) == 0) | |
1803 | return 1; | |
1804 | return 0; | |
233a11ab CS |
1805 | } |
1806 | ||
c906108c SS |
1807 | /* This function is mapped across the sections and remembers the |
1808 | offset and size of each of the debugging sections we are interested | |
1809 | in. */ | |
1810 | ||
1811 | static void | |
251d32d9 | 1812 | dwarf2_locate_sections (bfd *abfd, asection *sectp, void *vnames) |
c906108c | 1813 | { |
251d32d9 | 1814 | const struct dwarf2_debug_sections *names; |
dc7650b8 | 1815 | flagword aflag = bfd_get_section_flags (abfd, sectp); |
251d32d9 TG |
1816 | |
1817 | if (vnames == NULL) | |
1818 | names = &dwarf2_elf_names; | |
1819 | else | |
1820 | names = (const struct dwarf2_debug_sections *) vnames; | |
1821 | ||
dc7650b8 JK |
1822 | if ((aflag & SEC_HAS_CONTENTS) == 0) |
1823 | { | |
1824 | } | |
1825 | else if (section_is_p (sectp->name, &names->info)) | |
c906108c | 1826 | { |
dce234bc PP |
1827 | dwarf2_per_objfile->info.asection = sectp; |
1828 | dwarf2_per_objfile->info.size = bfd_get_section_size (sectp); | |
c906108c | 1829 | } |
251d32d9 | 1830 | else if (section_is_p (sectp->name, &names->abbrev)) |
c906108c | 1831 | { |
dce234bc PP |
1832 | dwarf2_per_objfile->abbrev.asection = sectp; |
1833 | dwarf2_per_objfile->abbrev.size = bfd_get_section_size (sectp); | |
c906108c | 1834 | } |
251d32d9 | 1835 | else if (section_is_p (sectp->name, &names->line)) |
c906108c | 1836 | { |
dce234bc PP |
1837 | dwarf2_per_objfile->line.asection = sectp; |
1838 | dwarf2_per_objfile->line.size = bfd_get_section_size (sectp); | |
c906108c | 1839 | } |
251d32d9 | 1840 | else if (section_is_p (sectp->name, &names->loc)) |
c906108c | 1841 | { |
dce234bc PP |
1842 | dwarf2_per_objfile->loc.asection = sectp; |
1843 | dwarf2_per_objfile->loc.size = bfd_get_section_size (sectp); | |
c906108c | 1844 | } |
251d32d9 | 1845 | else if (section_is_p (sectp->name, &names->macinfo)) |
c906108c | 1846 | { |
dce234bc PP |
1847 | dwarf2_per_objfile->macinfo.asection = sectp; |
1848 | dwarf2_per_objfile->macinfo.size = bfd_get_section_size (sectp); | |
c906108c | 1849 | } |
cf2c3c16 TT |
1850 | else if (section_is_p (sectp->name, &names->macro)) |
1851 | { | |
1852 | dwarf2_per_objfile->macro.asection = sectp; | |
1853 | dwarf2_per_objfile->macro.size = bfd_get_section_size (sectp); | |
1854 | } | |
251d32d9 | 1855 | else if (section_is_p (sectp->name, &names->str)) |
c906108c | 1856 | { |
dce234bc PP |
1857 | dwarf2_per_objfile->str.asection = sectp; |
1858 | dwarf2_per_objfile->str.size = bfd_get_section_size (sectp); | |
c906108c | 1859 | } |
3019eac3 DE |
1860 | else if (section_is_p (sectp->name, &names->addr)) |
1861 | { | |
1862 | dwarf2_per_objfile->addr.asection = sectp; | |
1863 | dwarf2_per_objfile->addr.size = bfd_get_section_size (sectp); | |
1864 | } | |
251d32d9 | 1865 | else if (section_is_p (sectp->name, &names->frame)) |
b6af0555 | 1866 | { |
dce234bc PP |
1867 | dwarf2_per_objfile->frame.asection = sectp; |
1868 | dwarf2_per_objfile->frame.size = bfd_get_section_size (sectp); | |
b6af0555 | 1869 | } |
251d32d9 | 1870 | else if (section_is_p (sectp->name, &names->eh_frame)) |
b6af0555 | 1871 | { |
dc7650b8 JK |
1872 | dwarf2_per_objfile->eh_frame.asection = sectp; |
1873 | dwarf2_per_objfile->eh_frame.size = bfd_get_section_size (sectp); | |
b6af0555 | 1874 | } |
251d32d9 | 1875 | else if (section_is_p (sectp->name, &names->ranges)) |
af34e669 | 1876 | { |
dce234bc PP |
1877 | dwarf2_per_objfile->ranges.asection = sectp; |
1878 | dwarf2_per_objfile->ranges.size = bfd_get_section_size (sectp); | |
af34e669 | 1879 | } |
251d32d9 | 1880 | else if (section_is_p (sectp->name, &names->types)) |
348e048f | 1881 | { |
8b70b953 TT |
1882 | struct dwarf2_section_info type_section; |
1883 | ||
1884 | memset (&type_section, 0, sizeof (type_section)); | |
1885 | type_section.asection = sectp; | |
1886 | type_section.size = bfd_get_section_size (sectp); | |
1887 | ||
1888 | VEC_safe_push (dwarf2_section_info_def, dwarf2_per_objfile->types, | |
1889 | &type_section); | |
348e048f | 1890 | } |
251d32d9 | 1891 | else if (section_is_p (sectp->name, &names->gdb_index)) |
9291a0cd TT |
1892 | { |
1893 | dwarf2_per_objfile->gdb_index.asection = sectp; | |
1894 | dwarf2_per_objfile->gdb_index.size = bfd_get_section_size (sectp); | |
1895 | } | |
dce234bc | 1896 | |
72dca2f5 FR |
1897 | if ((bfd_get_section_flags (abfd, sectp) & SEC_LOAD) |
1898 | && bfd_section_vma (abfd, sectp) == 0) | |
1899 | dwarf2_per_objfile->has_section_at_zero = 1; | |
c906108c SS |
1900 | } |
1901 | ||
fceca515 DE |
1902 | /* A helper function that decides whether a section is empty, |
1903 | or not present. */ | |
9e0ac564 TT |
1904 | |
1905 | static int | |
1906 | dwarf2_section_empty_p (struct dwarf2_section_info *info) | |
1907 | { | |
1908 | return info->asection == NULL || info->size == 0; | |
1909 | } | |
1910 | ||
3019eac3 DE |
1911 | /* Read the contents of the section INFO. |
1912 | OBJFILE is the main object file, but not necessarily the file where | |
1913 | the section comes from. E.g., for DWO files INFO->asection->owner | |
1914 | is the bfd of the DWO file. | |
dce234bc | 1915 | If the section is compressed, uncompress it before returning. */ |
c906108c | 1916 | |
dce234bc PP |
1917 | static void |
1918 | dwarf2_read_section (struct objfile *objfile, struct dwarf2_section_info *info) | |
c906108c | 1919 | { |
dce234bc | 1920 | asection *sectp = info->asection; |
3019eac3 | 1921 | bfd *abfd; |
dce234bc PP |
1922 | gdb_byte *buf, *retbuf; |
1923 | unsigned char header[4]; | |
c906108c | 1924 | |
be391dca TT |
1925 | if (info->readin) |
1926 | return; | |
dce234bc | 1927 | info->buffer = NULL; |
be391dca | 1928 | info->readin = 1; |
188dd5d6 | 1929 | |
9e0ac564 | 1930 | if (dwarf2_section_empty_p (info)) |
dce234bc | 1931 | return; |
c906108c | 1932 | |
3019eac3 DE |
1933 | abfd = sectp->owner; |
1934 | ||
4bf44c1c TT |
1935 | /* If the section has relocations, we must read it ourselves. |
1936 | Otherwise we attach it to the BFD. */ | |
1937 | if ((sectp->flags & SEC_RELOC) == 0) | |
dce234bc | 1938 | { |
4bf44c1c | 1939 | const gdb_byte *bytes = gdb_bfd_map_section (sectp, &info->size); |
dce234bc | 1940 | |
4bf44c1c TT |
1941 | /* We have to cast away const here for historical reasons. |
1942 | Fixing dwarf2read to be const-correct would be quite nice. */ | |
1943 | info->buffer = (gdb_byte *) bytes; | |
1944 | return; | |
dce234bc | 1945 | } |
dce234bc | 1946 | |
4bf44c1c TT |
1947 | buf = obstack_alloc (&objfile->objfile_obstack, info->size); |
1948 | info->buffer = buf; | |
dce234bc PP |
1949 | |
1950 | /* When debugging .o files, we may need to apply relocations; see | |
1951 | http://sourceware.org/ml/gdb-patches/2002-04/msg00136.html . | |
1952 | We never compress sections in .o files, so we only need to | |
1953 | try this when the section is not compressed. */ | |
ac8035ab | 1954 | retbuf = symfile_relocate_debug_section (objfile, sectp, buf); |
dce234bc PP |
1955 | if (retbuf != NULL) |
1956 | { | |
1957 | info->buffer = retbuf; | |
1958 | return; | |
1959 | } | |
1960 | ||
1961 | if (bfd_seek (abfd, sectp->filepos, SEEK_SET) != 0 | |
1962 | || bfd_bread (buf, info->size, abfd) != info->size) | |
1963 | error (_("Dwarf Error: Can't read DWARF data from '%s'"), | |
1964 | bfd_get_filename (abfd)); | |
1965 | } | |
1966 | ||
9e0ac564 TT |
1967 | /* A helper function that returns the size of a section in a safe way. |
1968 | If you are positive that the section has been read before using the | |
1969 | size, then it is safe to refer to the dwarf2_section_info object's | |
1970 | "size" field directly. In other cases, you must call this | |
1971 | function, because for compressed sections the size field is not set | |
1972 | correctly until the section has been read. */ | |
1973 | ||
1974 | static bfd_size_type | |
1975 | dwarf2_section_size (struct objfile *objfile, | |
1976 | struct dwarf2_section_info *info) | |
1977 | { | |
1978 | if (!info->readin) | |
1979 | dwarf2_read_section (objfile, info); | |
1980 | return info->size; | |
1981 | } | |
1982 | ||
dce234bc | 1983 | /* Fill in SECTP, BUFP and SIZEP with section info, given OBJFILE and |
0963b4bd | 1984 | SECTION_NAME. */ |
af34e669 | 1985 | |
dce234bc | 1986 | void |
3017a003 TG |
1987 | dwarf2_get_section_info (struct objfile *objfile, |
1988 | enum dwarf2_section_enum sect, | |
dce234bc PP |
1989 | asection **sectp, gdb_byte **bufp, |
1990 | bfd_size_type *sizep) | |
1991 | { | |
1992 | struct dwarf2_per_objfile *data | |
1993 | = objfile_data (objfile, dwarf2_objfile_data_key); | |
1994 | struct dwarf2_section_info *info; | |
a3b2a86b TT |
1995 | |
1996 | /* We may see an objfile without any DWARF, in which case we just | |
1997 | return nothing. */ | |
1998 | if (data == NULL) | |
1999 | { | |
2000 | *sectp = NULL; | |
2001 | *bufp = NULL; | |
2002 | *sizep = 0; | |
2003 | return; | |
2004 | } | |
3017a003 TG |
2005 | switch (sect) |
2006 | { | |
2007 | case DWARF2_DEBUG_FRAME: | |
2008 | info = &data->frame; | |
2009 | break; | |
2010 | case DWARF2_EH_FRAME: | |
2011 | info = &data->eh_frame; | |
2012 | break; | |
2013 | default: | |
2014 | gdb_assert_not_reached ("unexpected section"); | |
2015 | } | |
dce234bc | 2016 | |
9e0ac564 | 2017 | dwarf2_read_section (objfile, info); |
dce234bc PP |
2018 | |
2019 | *sectp = info->asection; | |
2020 | *bufp = info->buffer; | |
2021 | *sizep = info->size; | |
2022 | } | |
2023 | ||
36586728 TT |
2024 | /* A helper function to find the sections for a .dwz file. */ |
2025 | ||
2026 | static void | |
2027 | locate_dwz_sections (bfd *abfd, asection *sectp, void *arg) | |
2028 | { | |
2029 | struct dwz_file *dwz_file = arg; | |
2030 | ||
2031 | /* Note that we only support the standard ELF names, because .dwz | |
2032 | is ELF-only (at the time of writing). */ | |
2033 | if (section_is_p (sectp->name, &dwarf2_elf_names.abbrev)) | |
2034 | { | |
2035 | dwz_file->abbrev.asection = sectp; | |
2036 | dwz_file->abbrev.size = bfd_get_section_size (sectp); | |
2037 | } | |
2038 | else if (section_is_p (sectp->name, &dwarf2_elf_names.info)) | |
2039 | { | |
2040 | dwz_file->info.asection = sectp; | |
2041 | dwz_file->info.size = bfd_get_section_size (sectp); | |
2042 | } | |
2043 | else if (section_is_p (sectp->name, &dwarf2_elf_names.str)) | |
2044 | { | |
2045 | dwz_file->str.asection = sectp; | |
2046 | dwz_file->str.size = bfd_get_section_size (sectp); | |
2047 | } | |
2048 | else if (section_is_p (sectp->name, &dwarf2_elf_names.line)) | |
2049 | { | |
2050 | dwz_file->line.asection = sectp; | |
2051 | dwz_file->line.size = bfd_get_section_size (sectp); | |
2052 | } | |
2053 | else if (section_is_p (sectp->name, &dwarf2_elf_names.macro)) | |
2054 | { | |
2055 | dwz_file->macro.asection = sectp; | |
2056 | dwz_file->macro.size = bfd_get_section_size (sectp); | |
2057 | } | |
2ec9a5e0 TT |
2058 | else if (section_is_p (sectp->name, &dwarf2_elf_names.gdb_index)) |
2059 | { | |
2060 | dwz_file->gdb_index.asection = sectp; | |
2061 | dwz_file->gdb_index.size = bfd_get_section_size (sectp); | |
2062 | } | |
36586728 TT |
2063 | } |
2064 | ||
2065 | /* Open the separate '.dwz' debug file, if needed. Error if the file | |
2066 | cannot be found. */ | |
2067 | ||
2068 | static struct dwz_file * | |
2069 | dwarf2_get_dwz_file (void) | |
2070 | { | |
2071 | bfd *abfd, *dwz_bfd; | |
2072 | asection *section; | |
2073 | gdb_byte *data; | |
2074 | struct cleanup *cleanup; | |
2075 | const char *filename; | |
2076 | struct dwz_file *result; | |
2077 | ||
2078 | if (dwarf2_per_objfile->dwz_file != NULL) | |
2079 | return dwarf2_per_objfile->dwz_file; | |
2080 | ||
2081 | abfd = dwarf2_per_objfile->objfile->obfd; | |
2082 | section = bfd_get_section_by_name (abfd, ".gnu_debugaltlink"); | |
2083 | if (section == NULL) | |
2084 | error (_("could not find '.gnu_debugaltlink' section")); | |
2085 | if (!bfd_malloc_and_get_section (abfd, section, &data)) | |
2086 | error (_("could not read '.gnu_debugaltlink' section: %s"), | |
2087 | bfd_errmsg (bfd_get_error ())); | |
2088 | cleanup = make_cleanup (xfree, data); | |
2089 | ||
2090 | filename = data; | |
2091 | if (!IS_ABSOLUTE_PATH (filename)) | |
2092 | { | |
2093 | char *abs = gdb_realpath (dwarf2_per_objfile->objfile->name); | |
2094 | char *rel; | |
2095 | ||
2096 | make_cleanup (xfree, abs); | |
2097 | abs = ldirname (abs); | |
2098 | make_cleanup (xfree, abs); | |
2099 | ||
2100 | rel = concat (abs, SLASH_STRING, filename, (char *) NULL); | |
2101 | make_cleanup (xfree, rel); | |
2102 | filename = rel; | |
2103 | } | |
2104 | ||
2105 | /* The format is just a NUL-terminated file name, followed by the | |
2106 | build-id. For now, though, we ignore the build-id. */ | |
2107 | dwz_bfd = gdb_bfd_open (filename, gnutarget, -1); | |
2108 | if (dwz_bfd == NULL) | |
2109 | error (_("could not read '%s': %s"), filename, | |
2110 | bfd_errmsg (bfd_get_error ())); | |
2111 | ||
2112 | if (!bfd_check_format (dwz_bfd, bfd_object)) | |
2113 | { | |
2114 | gdb_bfd_unref (dwz_bfd); | |
2115 | error (_("file '%s' was not usable: %s"), filename, | |
2116 | bfd_errmsg (bfd_get_error ())); | |
2117 | } | |
2118 | ||
2119 | result = OBSTACK_ZALLOC (&dwarf2_per_objfile->objfile->objfile_obstack, | |
2120 | struct dwz_file); | |
2121 | result->dwz_bfd = dwz_bfd; | |
2122 | ||
2123 | bfd_map_over_sections (dwz_bfd, locate_dwz_sections, result); | |
2124 | ||
2125 | do_cleanups (cleanup); | |
2126 | ||
8d2cc612 | 2127 | dwarf2_per_objfile->dwz_file = result; |
36586728 TT |
2128 | return result; |
2129 | } | |
9291a0cd | 2130 | \f |
7b9f3c50 DE |
2131 | /* DWARF quick_symbols_functions support. */ |
2132 | ||
2133 | /* TUs can share .debug_line entries, and there can be a lot more TUs than | |
2134 | unique line tables, so we maintain a separate table of all .debug_line | |
2135 | derived entries to support the sharing. | |
2136 | All the quick functions need is the list of file names. We discard the | |
2137 | line_header when we're done and don't need to record it here. */ | |
2138 | struct quick_file_names | |
2139 | { | |
094b34ac DE |
2140 | /* The data used to construct the hash key. */ |
2141 | struct stmt_list_hash hash; | |
7b9f3c50 DE |
2142 | |
2143 | /* The number of entries in file_names, real_names. */ | |
2144 | unsigned int num_file_names; | |
2145 | ||
2146 | /* The file names from the line table, after being run through | |
2147 | file_full_name. */ | |
2148 | const char **file_names; | |
2149 | ||
2150 | /* The file names from the line table after being run through | |
2151 | gdb_realpath. These are computed lazily. */ | |
2152 | const char **real_names; | |
2153 | }; | |
2154 | ||
2155 | /* When using the index (and thus not using psymtabs), each CU has an | |
2156 | object of this type. This is used to hold information needed by | |
2157 | the various "quick" methods. */ | |
2158 | struct dwarf2_per_cu_quick_data | |
2159 | { | |
2160 | /* The file table. This can be NULL if there was no file table | |
2161 | or it's currently not read in. | |
2162 | NOTE: This points into dwarf2_per_objfile->quick_file_names_table. */ | |
2163 | struct quick_file_names *file_names; | |
2164 | ||
2165 | /* The corresponding symbol table. This is NULL if symbols for this | |
2166 | CU have not yet been read. */ | |
2167 | struct symtab *symtab; | |
2168 | ||
2169 | /* A temporary mark bit used when iterating over all CUs in | |
2170 | expand_symtabs_matching. */ | |
2171 | unsigned int mark : 1; | |
2172 | ||
2173 | /* True if we've tried to read the file table and found there isn't one. | |
2174 | There will be no point in trying to read it again next time. */ | |
2175 | unsigned int no_file_data : 1; | |
2176 | }; | |
2177 | ||
094b34ac DE |
2178 | /* Utility hash function for a stmt_list_hash. */ |
2179 | ||
2180 | static hashval_t | |
2181 | hash_stmt_list_entry (const struct stmt_list_hash *stmt_list_hash) | |
2182 | { | |
2183 | hashval_t v = 0; | |
2184 | ||
2185 | if (stmt_list_hash->dwo_unit != NULL) | |
2186 | v += (uintptr_t) stmt_list_hash->dwo_unit->dwo_file; | |
2187 | v += stmt_list_hash->line_offset.sect_off; | |
2188 | return v; | |
2189 | } | |
2190 | ||
2191 | /* Utility equality function for a stmt_list_hash. */ | |
2192 | ||
2193 | static int | |
2194 | eq_stmt_list_entry (const struct stmt_list_hash *lhs, | |
2195 | const struct stmt_list_hash *rhs) | |
2196 | { | |
2197 | if ((lhs->dwo_unit != NULL) != (rhs->dwo_unit != NULL)) | |
2198 | return 0; | |
2199 | if (lhs->dwo_unit != NULL | |
2200 | && lhs->dwo_unit->dwo_file != rhs->dwo_unit->dwo_file) | |
2201 | return 0; | |
2202 | ||
2203 | return lhs->line_offset.sect_off == rhs->line_offset.sect_off; | |
2204 | } | |
2205 | ||
7b9f3c50 DE |
2206 | /* Hash function for a quick_file_names. */ |
2207 | ||
2208 | static hashval_t | |
2209 | hash_file_name_entry (const void *e) | |
2210 | { | |
2211 | const struct quick_file_names *file_data = e; | |
2212 | ||
094b34ac | 2213 | return hash_stmt_list_entry (&file_data->hash); |
7b9f3c50 DE |
2214 | } |
2215 | ||
2216 | /* Equality function for a quick_file_names. */ | |
2217 | ||
2218 | static int | |
2219 | eq_file_name_entry (const void *a, const void *b) | |
2220 | { | |
2221 | const struct quick_file_names *ea = a; | |
2222 | const struct quick_file_names *eb = b; | |
2223 | ||
094b34ac | 2224 | return eq_stmt_list_entry (&ea->hash, &eb->hash); |
7b9f3c50 DE |
2225 | } |
2226 | ||
2227 | /* Delete function for a quick_file_names. */ | |
2228 | ||
2229 | static void | |
2230 | delete_file_name_entry (void *e) | |
2231 | { | |
2232 | struct quick_file_names *file_data = e; | |
2233 | int i; | |
2234 | ||
2235 | for (i = 0; i < file_data->num_file_names; ++i) | |
2236 | { | |
2237 | xfree ((void*) file_data->file_names[i]); | |
2238 | if (file_data->real_names) | |
2239 | xfree ((void*) file_data->real_names[i]); | |
2240 | } | |
2241 | ||
2242 | /* The space for the struct itself lives on objfile_obstack, | |
2243 | so we don't free it here. */ | |
2244 | } | |
2245 | ||
2246 | /* Create a quick_file_names hash table. */ | |
2247 | ||
2248 | static htab_t | |
2249 | create_quick_file_names_table (unsigned int nr_initial_entries) | |
2250 | { | |
2251 | return htab_create_alloc (nr_initial_entries, | |
2252 | hash_file_name_entry, eq_file_name_entry, | |
2253 | delete_file_name_entry, xcalloc, xfree); | |
2254 | } | |
9291a0cd | 2255 | |
918dd910 JK |
2256 | /* Read in PER_CU->CU. This function is unrelated to symtabs, symtab would |
2257 | have to be created afterwards. You should call age_cached_comp_units after | |
2258 | processing PER_CU->CU. dw2_setup must have been already called. */ | |
2259 | ||
2260 | static void | |
2261 | load_cu (struct dwarf2_per_cu_data *per_cu) | |
2262 | { | |
3019eac3 | 2263 | if (per_cu->is_debug_types) |
e5fe5e75 | 2264 | load_full_type_unit (per_cu); |
918dd910 | 2265 | else |
95554aad | 2266 | load_full_comp_unit (per_cu, language_minimal); |
918dd910 | 2267 | |
918dd910 | 2268 | gdb_assert (per_cu->cu != NULL); |
2dc860c0 DE |
2269 | |
2270 | dwarf2_find_base_address (per_cu->cu->dies, per_cu->cu); | |
918dd910 JK |
2271 | } |
2272 | ||
a0f42c21 | 2273 | /* Read in the symbols for PER_CU. */ |
2fdf6df6 | 2274 | |
9291a0cd | 2275 | static void |
a0f42c21 | 2276 | dw2_do_instantiate_symtab (struct dwarf2_per_cu_data *per_cu) |
9291a0cd TT |
2277 | { |
2278 | struct cleanup *back_to; | |
2279 | ||
f4dc4d17 DE |
2280 | /* Skip type_unit_groups, reading the type units they contain |
2281 | is handled elsewhere. */ | |
2282 | if (IS_TYPE_UNIT_GROUP (per_cu)) | |
2283 | return; | |
2284 | ||
9291a0cd TT |
2285 | back_to = make_cleanup (dwarf2_release_queue, NULL); |
2286 | ||
95554aad TT |
2287 | if (dwarf2_per_objfile->using_index |
2288 | ? per_cu->v.quick->symtab == NULL | |
2289 | : (per_cu->v.psymtab == NULL || !per_cu->v.psymtab->readin)) | |
2290 | { | |
2291 | queue_comp_unit (per_cu, language_minimal); | |
2292 | load_cu (per_cu); | |
2293 | } | |
9291a0cd | 2294 | |
a0f42c21 | 2295 | process_queue (); |
9291a0cd TT |
2296 | |
2297 | /* Age the cache, releasing compilation units that have not | |
2298 | been used recently. */ | |
2299 | age_cached_comp_units (); | |
2300 | ||
2301 | do_cleanups (back_to); | |
2302 | } | |
2303 | ||
2304 | /* Ensure that the symbols for PER_CU have been read in. OBJFILE is | |
2305 | the objfile from which this CU came. Returns the resulting symbol | |
2306 | table. */ | |
2fdf6df6 | 2307 | |
9291a0cd | 2308 | static struct symtab * |
a0f42c21 | 2309 | dw2_instantiate_symtab (struct dwarf2_per_cu_data *per_cu) |
9291a0cd | 2310 | { |
95554aad | 2311 | gdb_assert (dwarf2_per_objfile->using_index); |
9291a0cd TT |
2312 | if (!per_cu->v.quick->symtab) |
2313 | { | |
2314 | struct cleanup *back_to = make_cleanup (free_cached_comp_units, NULL); | |
2315 | increment_reading_symtab (); | |
a0f42c21 | 2316 | dw2_do_instantiate_symtab (per_cu); |
95554aad | 2317 | process_cu_includes (); |
9291a0cd TT |
2318 | do_cleanups (back_to); |
2319 | } | |
2320 | return per_cu->v.quick->symtab; | |
2321 | } | |
2322 | ||
f4dc4d17 DE |
2323 | /* Return the CU given its index. |
2324 | ||
2325 | This is intended for loops like: | |
2326 | ||
2327 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units | |
2328 | + dwarf2_per_objfile->n_type_units); ++i) | |
2329 | { | |
2330 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); | |
2331 | ||
2332 | ...; | |
2333 | } | |
2334 | */ | |
2fdf6df6 | 2335 | |
1fd400ff TT |
2336 | static struct dwarf2_per_cu_data * |
2337 | dw2_get_cu (int index) | |
2338 | { | |
2339 | if (index >= dwarf2_per_objfile->n_comp_units) | |
2340 | { | |
f4dc4d17 | 2341 | index -= dwarf2_per_objfile->n_comp_units; |
094b34ac DE |
2342 | gdb_assert (index < dwarf2_per_objfile->n_type_units); |
2343 | return &dwarf2_per_objfile->all_type_units[index]->per_cu; | |
f4dc4d17 DE |
2344 | } |
2345 | ||
2346 | return dwarf2_per_objfile->all_comp_units[index]; | |
2347 | } | |
2348 | ||
2349 | /* Return the primary CU given its index. | |
2350 | The difference between this function and dw2_get_cu is in the handling | |
2351 | of type units (TUs). Here we return the type_unit_group object. | |
2352 | ||
2353 | This is intended for loops like: | |
2354 | ||
2355 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units | |
2356 | + dwarf2_per_objfile->n_type_unit_groups); ++i) | |
2357 | { | |
2358 | struct dwarf2_per_cu_data *per_cu = dw2_get_primary_cu (i); | |
2359 | ||
2360 | ...; | |
2361 | } | |
2362 | */ | |
2363 | ||
2364 | static struct dwarf2_per_cu_data * | |
2365 | dw2_get_primary_cu (int index) | |
2366 | { | |
2367 | if (index >= dwarf2_per_objfile->n_comp_units) | |
2368 | { | |
1fd400ff | 2369 | index -= dwarf2_per_objfile->n_comp_units; |
094b34ac DE |
2370 | gdb_assert (index < dwarf2_per_objfile->n_type_unit_groups); |
2371 | return &dwarf2_per_objfile->all_type_unit_groups[index]->per_cu; | |
1fd400ff | 2372 | } |
f4dc4d17 | 2373 | |
1fd400ff TT |
2374 | return dwarf2_per_objfile->all_comp_units[index]; |
2375 | } | |
2376 | ||
2ec9a5e0 TT |
2377 | /* A helper for create_cus_from_index that handles a given list of |
2378 | CUs. */ | |
2fdf6df6 | 2379 | |
74a0d9f6 | 2380 | static void |
2ec9a5e0 TT |
2381 | create_cus_from_index_list (struct objfile *objfile, |
2382 | const gdb_byte *cu_list, offset_type n_elements, | |
2383 | struct dwarf2_section_info *section, | |
2384 | int is_dwz, | |
2385 | int base_offset) | |
9291a0cd TT |
2386 | { |
2387 | offset_type i; | |
9291a0cd | 2388 | |
2ec9a5e0 | 2389 | for (i = 0; i < n_elements; i += 2) |
9291a0cd TT |
2390 | { |
2391 | struct dwarf2_per_cu_data *the_cu; | |
2392 | ULONGEST offset, length; | |
2393 | ||
74a0d9f6 JK |
2394 | gdb_static_assert (sizeof (ULONGEST) >= 8); |
2395 | offset = extract_unsigned_integer (cu_list, 8, BFD_ENDIAN_LITTLE); | |
2396 | length = extract_unsigned_integer (cu_list + 8, 8, BFD_ENDIAN_LITTLE); | |
9291a0cd TT |
2397 | cu_list += 2 * 8; |
2398 | ||
2399 | the_cu = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
2400 | struct dwarf2_per_cu_data); | |
b64f50a1 | 2401 | the_cu->offset.sect_off = offset; |
9291a0cd TT |
2402 | the_cu->length = length; |
2403 | the_cu->objfile = objfile; | |
2ec9a5e0 | 2404 | the_cu->info_or_types_section = section; |
9291a0cd TT |
2405 | the_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
2406 | struct dwarf2_per_cu_quick_data); | |
2ec9a5e0 TT |
2407 | the_cu->is_dwz = is_dwz; |
2408 | dwarf2_per_objfile->all_comp_units[base_offset + i / 2] = the_cu; | |
9291a0cd | 2409 | } |
9291a0cd TT |
2410 | } |
2411 | ||
2ec9a5e0 | 2412 | /* Read the CU list from the mapped index, and use it to create all |
74a0d9f6 | 2413 | the CU objects for this objfile. */ |
2ec9a5e0 | 2414 | |
74a0d9f6 | 2415 | static void |
2ec9a5e0 TT |
2416 | create_cus_from_index (struct objfile *objfile, |
2417 | const gdb_byte *cu_list, offset_type cu_list_elements, | |
2418 | const gdb_byte *dwz_list, offset_type dwz_elements) | |
2419 | { | |
2420 | struct dwz_file *dwz; | |
2421 | ||
2422 | dwarf2_per_objfile->n_comp_units = (cu_list_elements + dwz_elements) / 2; | |
2423 | dwarf2_per_objfile->all_comp_units | |
2424 | = obstack_alloc (&objfile->objfile_obstack, | |
2425 | dwarf2_per_objfile->n_comp_units | |
2426 | * sizeof (struct dwarf2_per_cu_data *)); | |
2427 | ||
74a0d9f6 JK |
2428 | create_cus_from_index_list (objfile, cu_list, cu_list_elements, |
2429 | &dwarf2_per_objfile->info, 0, 0); | |
2ec9a5e0 TT |
2430 | |
2431 | if (dwz_elements == 0) | |
74a0d9f6 | 2432 | return; |
2ec9a5e0 TT |
2433 | |
2434 | dwz = dwarf2_get_dwz_file (); | |
74a0d9f6 JK |
2435 | create_cus_from_index_list (objfile, dwz_list, dwz_elements, &dwz->info, 1, |
2436 | cu_list_elements / 2); | |
2ec9a5e0 TT |
2437 | } |
2438 | ||
1fd400ff | 2439 | /* Create the signatured type hash table from the index. */ |
673bfd45 | 2440 | |
74a0d9f6 | 2441 | static void |
673bfd45 | 2442 | create_signatured_type_table_from_index (struct objfile *objfile, |
8b70b953 | 2443 | struct dwarf2_section_info *section, |
673bfd45 DE |
2444 | const gdb_byte *bytes, |
2445 | offset_type elements) | |
1fd400ff TT |
2446 | { |
2447 | offset_type i; | |
673bfd45 | 2448 | htab_t sig_types_hash; |
1fd400ff | 2449 | |
d467dd73 DE |
2450 | dwarf2_per_objfile->n_type_units = elements / 3; |
2451 | dwarf2_per_objfile->all_type_units | |
1fd400ff | 2452 | = obstack_alloc (&objfile->objfile_obstack, |
d467dd73 | 2453 | dwarf2_per_objfile->n_type_units |
b4dd5633 | 2454 | * sizeof (struct signatured_type *)); |
1fd400ff | 2455 | |
673bfd45 | 2456 | sig_types_hash = allocate_signatured_type_table (objfile); |
1fd400ff TT |
2457 | |
2458 | for (i = 0; i < elements; i += 3) | |
2459 | { | |
52dc124a DE |
2460 | struct signatured_type *sig_type; |
2461 | ULONGEST offset, type_offset_in_tu, signature; | |
1fd400ff TT |
2462 | void **slot; |
2463 | ||
74a0d9f6 JK |
2464 | gdb_static_assert (sizeof (ULONGEST) >= 8); |
2465 | offset = extract_unsigned_integer (bytes, 8, BFD_ENDIAN_LITTLE); | |
2466 | type_offset_in_tu = extract_unsigned_integer (bytes + 8, 8, | |
2467 | BFD_ENDIAN_LITTLE); | |
1fd400ff TT |
2468 | signature = extract_unsigned_integer (bytes + 16, 8, BFD_ENDIAN_LITTLE); |
2469 | bytes += 3 * 8; | |
2470 | ||
52dc124a | 2471 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
1fd400ff | 2472 | struct signatured_type); |
52dc124a | 2473 | sig_type->signature = signature; |
3019eac3 DE |
2474 | sig_type->type_offset_in_tu.cu_off = type_offset_in_tu; |
2475 | sig_type->per_cu.is_debug_types = 1; | |
2476 | sig_type->per_cu.info_or_types_section = section; | |
52dc124a DE |
2477 | sig_type->per_cu.offset.sect_off = offset; |
2478 | sig_type->per_cu.objfile = objfile; | |
2479 | sig_type->per_cu.v.quick | |
1fd400ff TT |
2480 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
2481 | struct dwarf2_per_cu_quick_data); | |
2482 | ||
52dc124a DE |
2483 | slot = htab_find_slot (sig_types_hash, sig_type, INSERT); |
2484 | *slot = sig_type; | |
1fd400ff | 2485 | |
b4dd5633 | 2486 | dwarf2_per_objfile->all_type_units[i / 3] = sig_type; |
1fd400ff TT |
2487 | } |
2488 | ||
673bfd45 | 2489 | dwarf2_per_objfile->signatured_types = sig_types_hash; |
1fd400ff TT |
2490 | } |
2491 | ||
9291a0cd TT |
2492 | /* Read the address map data from the mapped index, and use it to |
2493 | populate the objfile's psymtabs_addrmap. */ | |
2fdf6df6 | 2494 | |
9291a0cd TT |
2495 | static void |
2496 | create_addrmap_from_index (struct objfile *objfile, struct mapped_index *index) | |
2497 | { | |
2498 | const gdb_byte *iter, *end; | |
2499 | struct obstack temp_obstack; | |
2500 | struct addrmap *mutable_map; | |
2501 | struct cleanup *cleanup; | |
2502 | CORE_ADDR baseaddr; | |
2503 | ||
2504 | obstack_init (&temp_obstack); | |
2505 | cleanup = make_cleanup_obstack_free (&temp_obstack); | |
2506 | mutable_map = addrmap_create_mutable (&temp_obstack); | |
2507 | ||
2508 | iter = index->address_table; | |
2509 | end = iter + index->address_table_size; | |
2510 | ||
2511 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
2512 | ||
2513 | while (iter < end) | |
2514 | { | |
2515 | ULONGEST hi, lo, cu_index; | |
2516 | lo = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
2517 | iter += 8; | |
2518 | hi = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
2519 | iter += 8; | |
2520 | cu_index = extract_unsigned_integer (iter, 4, BFD_ENDIAN_LITTLE); | |
2521 | iter += 4; | |
2522 | ||
2523 | addrmap_set_empty (mutable_map, lo + baseaddr, hi + baseaddr - 1, | |
1fd400ff | 2524 | dw2_get_cu (cu_index)); |
9291a0cd TT |
2525 | } |
2526 | ||
2527 | objfile->psymtabs_addrmap = addrmap_create_fixed (mutable_map, | |
2528 | &objfile->objfile_obstack); | |
2529 | do_cleanups (cleanup); | |
2530 | } | |
2531 | ||
59d7bcaf JK |
2532 | /* The hash function for strings in the mapped index. This is the same as |
2533 | SYMBOL_HASH_NEXT, but we keep a separate copy to maintain control over the | |
2534 | implementation. This is necessary because the hash function is tied to the | |
2535 | format of the mapped index file. The hash values do not have to match with | |
559a7a62 JK |
2536 | SYMBOL_HASH_NEXT. |
2537 | ||
2538 | Use INT_MAX for INDEX_VERSION if you generate the current index format. */ | |
2fdf6df6 | 2539 | |
9291a0cd | 2540 | static hashval_t |
559a7a62 | 2541 | mapped_index_string_hash (int index_version, const void *p) |
9291a0cd TT |
2542 | { |
2543 | const unsigned char *str = (const unsigned char *) p; | |
2544 | hashval_t r = 0; | |
2545 | unsigned char c; | |
2546 | ||
2547 | while ((c = *str++) != 0) | |
559a7a62 JK |
2548 | { |
2549 | if (index_version >= 5) | |
2550 | c = tolower (c); | |
2551 | r = r * 67 + c - 113; | |
2552 | } | |
9291a0cd TT |
2553 | |
2554 | return r; | |
2555 | } | |
2556 | ||
2557 | /* Find a slot in the mapped index INDEX for the object named NAME. | |
2558 | If NAME is found, set *VEC_OUT to point to the CU vector in the | |
2559 | constant pool and return 1. If NAME cannot be found, return 0. */ | |
2fdf6df6 | 2560 | |
9291a0cd TT |
2561 | static int |
2562 | find_slot_in_mapped_hash (struct mapped_index *index, const char *name, | |
2563 | offset_type **vec_out) | |
2564 | { | |
0cf03b49 JK |
2565 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
2566 | offset_type hash; | |
9291a0cd | 2567 | offset_type slot, step; |
559a7a62 | 2568 | int (*cmp) (const char *, const char *); |
9291a0cd | 2569 | |
0cf03b49 JK |
2570 | if (current_language->la_language == language_cplus |
2571 | || current_language->la_language == language_java | |
2572 | || current_language->la_language == language_fortran) | |
2573 | { | |
2574 | /* NAME is already canonical. Drop any qualifiers as .gdb_index does | |
2575 | not contain any. */ | |
2576 | const char *paren = strchr (name, '('); | |
2577 | ||
2578 | if (paren) | |
2579 | { | |
2580 | char *dup; | |
2581 | ||
2582 | dup = xmalloc (paren - name + 1); | |
2583 | memcpy (dup, name, paren - name); | |
2584 | dup[paren - name] = 0; | |
2585 | ||
2586 | make_cleanup (xfree, dup); | |
2587 | name = dup; | |
2588 | } | |
2589 | } | |
2590 | ||
559a7a62 | 2591 | /* Index version 4 did not support case insensitive searches. But the |
feea76c2 | 2592 | indices for case insensitive languages are built in lowercase, therefore |
559a7a62 JK |
2593 | simulate our NAME being searched is also lowercased. */ |
2594 | hash = mapped_index_string_hash ((index->version == 4 | |
2595 | && case_sensitivity == case_sensitive_off | |
2596 | ? 5 : index->version), | |
2597 | name); | |
2598 | ||
3876f04e DE |
2599 | slot = hash & (index->symbol_table_slots - 1); |
2600 | step = ((hash * 17) & (index->symbol_table_slots - 1)) | 1; | |
559a7a62 | 2601 | cmp = (case_sensitivity == case_sensitive_on ? strcmp : strcasecmp); |
9291a0cd TT |
2602 | |
2603 | for (;;) | |
2604 | { | |
2605 | /* Convert a slot number to an offset into the table. */ | |
2606 | offset_type i = 2 * slot; | |
2607 | const char *str; | |
3876f04e | 2608 | if (index->symbol_table[i] == 0 && index->symbol_table[i + 1] == 0) |
0cf03b49 JK |
2609 | { |
2610 | do_cleanups (back_to); | |
2611 | return 0; | |
2612 | } | |
9291a0cd | 2613 | |
3876f04e | 2614 | str = index->constant_pool + MAYBE_SWAP (index->symbol_table[i]); |
559a7a62 | 2615 | if (!cmp (name, str)) |
9291a0cd TT |
2616 | { |
2617 | *vec_out = (offset_type *) (index->constant_pool | |
3876f04e | 2618 | + MAYBE_SWAP (index->symbol_table[i + 1])); |
0cf03b49 | 2619 | do_cleanups (back_to); |
9291a0cd TT |
2620 | return 1; |
2621 | } | |
2622 | ||
3876f04e | 2623 | slot = (slot + step) & (index->symbol_table_slots - 1); |
9291a0cd TT |
2624 | } |
2625 | } | |
2626 | ||
2ec9a5e0 TT |
2627 | /* A helper function that reads the .gdb_index from SECTION and fills |
2628 | in MAP. FILENAME is the name of the file containing the section; | |
2629 | it is used for error reporting. DEPRECATED_OK is nonzero if it is | |
2630 | ok to use deprecated sections. | |
2631 | ||
2632 | CU_LIST, CU_LIST_ELEMENTS, TYPES_LIST, and TYPES_LIST_ELEMENTS are | |
2633 | out parameters that are filled in with information about the CU and | |
2634 | TU lists in the section. | |
2635 | ||
2636 | Returns 1 if all went well, 0 otherwise. */ | |
2fdf6df6 | 2637 | |
9291a0cd | 2638 | static int |
2ec9a5e0 TT |
2639 | read_index_from_section (struct objfile *objfile, |
2640 | const char *filename, | |
2641 | int deprecated_ok, | |
2642 | struct dwarf2_section_info *section, | |
2643 | struct mapped_index *map, | |
2644 | const gdb_byte **cu_list, | |
2645 | offset_type *cu_list_elements, | |
2646 | const gdb_byte **types_list, | |
2647 | offset_type *types_list_elements) | |
9291a0cd | 2648 | { |
9291a0cd | 2649 | char *addr; |
2ec9a5e0 | 2650 | offset_type version; |
b3b272e1 | 2651 | offset_type *metadata; |
1fd400ff | 2652 | int i; |
9291a0cd | 2653 | |
2ec9a5e0 | 2654 | if (dwarf2_section_empty_p (section)) |
9291a0cd | 2655 | return 0; |
82430852 JK |
2656 | |
2657 | /* Older elfutils strip versions could keep the section in the main | |
2658 | executable while splitting it for the separate debug info file. */ | |
2ec9a5e0 | 2659 | if ((bfd_get_file_flags (section->asection) & SEC_HAS_CONTENTS) == 0) |
82430852 JK |
2660 | return 0; |
2661 | ||
2ec9a5e0 | 2662 | dwarf2_read_section (objfile, section); |
9291a0cd | 2663 | |
2ec9a5e0 | 2664 | addr = section->buffer; |
9291a0cd | 2665 | /* Version check. */ |
1fd400ff | 2666 | version = MAYBE_SWAP (*(offset_type *) addr); |
987d643c | 2667 | /* Versions earlier than 3 emitted every copy of a psymbol. This |
a6e293d1 | 2668 | causes the index to behave very poorly for certain requests. Version 3 |
831adc1f | 2669 | contained incomplete addrmap. So, it seems better to just ignore such |
481860b3 | 2670 | indices. */ |
831adc1f | 2671 | if (version < 4) |
481860b3 GB |
2672 | { |
2673 | static int warning_printed = 0; | |
2674 | if (!warning_printed) | |
2675 | { | |
2676 | warning (_("Skipping obsolete .gdb_index section in %s."), | |
2ec9a5e0 | 2677 | filename); |
481860b3 GB |
2678 | warning_printed = 1; |
2679 | } | |
2680 | return 0; | |
2681 | } | |
2682 | /* Index version 4 uses a different hash function than index version | |
2683 | 5 and later. | |
2684 | ||
2685 | Versions earlier than 6 did not emit psymbols for inlined | |
2686 | functions. Using these files will cause GDB not to be able to | |
2687 | set breakpoints on inlined functions by name, so we ignore these | |
e615022a DE |
2688 | indices unless the user has done |
2689 | "set use-deprecated-index-sections on". */ | |
2ec9a5e0 | 2690 | if (version < 6 && !deprecated_ok) |
481860b3 GB |
2691 | { |
2692 | static int warning_printed = 0; | |
2693 | if (!warning_printed) | |
2694 | { | |
e615022a DE |
2695 | warning (_("\ |
2696 | Skipping deprecated .gdb_index section in %s.\n\ | |
2697 | Do \"set use-deprecated-index-sections on\" before the file is read\n\ | |
2698 | to use the section anyway."), | |
2ec9a5e0 | 2699 | filename); |
481860b3 GB |
2700 | warning_printed = 1; |
2701 | } | |
2702 | return 0; | |
2703 | } | |
796a7ff8 DE |
2704 | /* Version 7 indices generated by gold refer to the CU for a symbol instead |
2705 | of the TU (for symbols coming from TUs). It's just a performance bug, and | |
2706 | we can't distinguish gdb-generated indices from gold-generated ones, so | |
2707 | nothing to do here. */ | |
2708 | ||
481860b3 | 2709 | /* Indexes with higher version than the one supported by GDB may be no |
594e8718 | 2710 | longer backward compatible. */ |
796a7ff8 | 2711 | if (version > 8) |
594e8718 | 2712 | return 0; |
9291a0cd | 2713 | |
559a7a62 | 2714 | map->version = version; |
2ec9a5e0 | 2715 | map->total_size = section->size; |
9291a0cd TT |
2716 | |
2717 | metadata = (offset_type *) (addr + sizeof (offset_type)); | |
1fd400ff TT |
2718 | |
2719 | i = 0; | |
2ec9a5e0 TT |
2720 | *cu_list = addr + MAYBE_SWAP (metadata[i]); |
2721 | *cu_list_elements = ((MAYBE_SWAP (metadata[i + 1]) - MAYBE_SWAP (metadata[i])) | |
2722 | / 8); | |
1fd400ff TT |
2723 | ++i; |
2724 | ||
2ec9a5e0 TT |
2725 | *types_list = addr + MAYBE_SWAP (metadata[i]); |
2726 | *types_list_elements = ((MAYBE_SWAP (metadata[i + 1]) | |
2727 | - MAYBE_SWAP (metadata[i])) | |
2728 | / 8); | |
987d643c | 2729 | ++i; |
1fd400ff TT |
2730 | |
2731 | map->address_table = addr + MAYBE_SWAP (metadata[i]); | |
2732 | map->address_table_size = (MAYBE_SWAP (metadata[i + 1]) | |
2733 | - MAYBE_SWAP (metadata[i])); | |
2734 | ++i; | |
2735 | ||
3876f04e DE |
2736 | map->symbol_table = (offset_type *) (addr + MAYBE_SWAP (metadata[i])); |
2737 | map->symbol_table_slots = ((MAYBE_SWAP (metadata[i + 1]) | |
2738 | - MAYBE_SWAP (metadata[i])) | |
2739 | / (2 * sizeof (offset_type))); | |
1fd400ff | 2740 | ++i; |
9291a0cd | 2741 | |
1fd400ff TT |
2742 | map->constant_pool = addr + MAYBE_SWAP (metadata[i]); |
2743 | ||
2ec9a5e0 TT |
2744 | return 1; |
2745 | } | |
2746 | ||
2747 | ||
2748 | /* Read the index file. If everything went ok, initialize the "quick" | |
2749 | elements of all the CUs and return 1. Otherwise, return 0. */ | |
2750 | ||
2751 | static int | |
2752 | dwarf2_read_index (struct objfile *objfile) | |
2753 | { | |
2754 | struct mapped_index local_map, *map; | |
2755 | const gdb_byte *cu_list, *types_list, *dwz_list = NULL; | |
2756 | offset_type cu_list_elements, types_list_elements, dwz_list_elements = 0; | |
2757 | ||
2758 | if (!read_index_from_section (objfile, objfile->name, | |
2759 | use_deprecated_index_sections, | |
2760 | &dwarf2_per_objfile->gdb_index, &local_map, | |
2761 | &cu_list, &cu_list_elements, | |
2762 | &types_list, &types_list_elements)) | |
2763 | return 0; | |
2764 | ||
0fefef59 | 2765 | /* Don't use the index if it's empty. */ |
2ec9a5e0 | 2766 | if (local_map.symbol_table_slots == 0) |
0fefef59 DE |
2767 | return 0; |
2768 | ||
2ec9a5e0 TT |
2769 | /* If there is a .dwz file, read it so we can get its CU list as |
2770 | well. */ | |
2771 | if (bfd_get_section_by_name (objfile->obfd, ".gnu_debugaltlink") != NULL) | |
2772 | { | |
2773 | struct dwz_file *dwz = dwarf2_get_dwz_file (); | |
2774 | struct mapped_index dwz_map; | |
2775 | const gdb_byte *dwz_types_ignore; | |
2776 | offset_type dwz_types_elements_ignore; | |
2777 | ||
2778 | if (!read_index_from_section (objfile, bfd_get_filename (dwz->dwz_bfd), | |
2779 | 1, | |
2780 | &dwz->gdb_index, &dwz_map, | |
2781 | &dwz_list, &dwz_list_elements, | |
2782 | &dwz_types_ignore, | |
2783 | &dwz_types_elements_ignore)) | |
2784 | { | |
2785 | warning (_("could not read '.gdb_index' section from %s; skipping"), | |
2786 | bfd_get_filename (dwz->dwz_bfd)); | |
2787 | return 0; | |
2788 | } | |
2789 | } | |
2790 | ||
74a0d9f6 JK |
2791 | create_cus_from_index (objfile, cu_list, cu_list_elements, dwz_list, |
2792 | dwz_list_elements); | |
1fd400ff | 2793 | |
8b70b953 TT |
2794 | if (types_list_elements) |
2795 | { | |
2796 | struct dwarf2_section_info *section; | |
2797 | ||
2798 | /* We can only handle a single .debug_types when we have an | |
2799 | index. */ | |
2800 | if (VEC_length (dwarf2_section_info_def, dwarf2_per_objfile->types) != 1) | |
2801 | return 0; | |
2802 | ||
2803 | section = VEC_index (dwarf2_section_info_def, | |
2804 | dwarf2_per_objfile->types, 0); | |
2805 | ||
74a0d9f6 JK |
2806 | create_signatured_type_table_from_index (objfile, section, types_list, |
2807 | types_list_elements); | |
8b70b953 | 2808 | } |
9291a0cd | 2809 | |
2ec9a5e0 TT |
2810 | create_addrmap_from_index (objfile, &local_map); |
2811 | ||
2812 | map = obstack_alloc (&objfile->objfile_obstack, sizeof (struct mapped_index)); | |
2813 | *map = local_map; | |
9291a0cd TT |
2814 | |
2815 | dwarf2_per_objfile->index_table = map; | |
2816 | dwarf2_per_objfile->using_index = 1; | |
7b9f3c50 DE |
2817 | dwarf2_per_objfile->quick_file_names_table = |
2818 | create_quick_file_names_table (dwarf2_per_objfile->n_comp_units); | |
9291a0cd TT |
2819 | |
2820 | return 1; | |
2821 | } | |
2822 | ||
2823 | /* A helper for the "quick" functions which sets the global | |
2824 | dwarf2_per_objfile according to OBJFILE. */ | |
2fdf6df6 | 2825 | |
9291a0cd TT |
2826 | static void |
2827 | dw2_setup (struct objfile *objfile) | |
2828 | { | |
2829 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); | |
2830 | gdb_assert (dwarf2_per_objfile); | |
2831 | } | |
2832 | ||
dee91e82 | 2833 | /* die_reader_func for dw2_get_file_names. */ |
2fdf6df6 | 2834 | |
dee91e82 DE |
2835 | static void |
2836 | dw2_get_file_names_reader (const struct die_reader_specs *reader, | |
2837 | gdb_byte *info_ptr, | |
2838 | struct die_info *comp_unit_die, | |
2839 | int has_children, | |
2840 | void *data) | |
9291a0cd | 2841 | { |
dee91e82 DE |
2842 | struct dwarf2_cu *cu = reader->cu; |
2843 | struct dwarf2_per_cu_data *this_cu = cu->per_cu; | |
2844 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
094b34ac | 2845 | struct dwarf2_per_cu_data *lh_cu; |
7b9f3c50 | 2846 | struct line_header *lh; |
9291a0cd | 2847 | struct attribute *attr; |
dee91e82 | 2848 | int i; |
15d034d0 | 2849 | const char *name, *comp_dir; |
7b9f3c50 DE |
2850 | void **slot; |
2851 | struct quick_file_names *qfn; | |
2852 | unsigned int line_offset; | |
9291a0cd | 2853 | |
07261596 TT |
2854 | /* Our callers never want to match partial units -- instead they |
2855 | will match the enclosing full CU. */ | |
2856 | if (comp_unit_die->tag == DW_TAG_partial_unit) | |
2857 | { | |
2858 | this_cu->v.quick->no_file_data = 1; | |
2859 | return; | |
2860 | } | |
2861 | ||
094b34ac DE |
2862 | /* If we're reading the line header for TUs, store it in the "per_cu" |
2863 | for tu_group. */ | |
2864 | if (this_cu->is_debug_types) | |
2865 | { | |
2866 | struct type_unit_group *tu_group = data; | |
2867 | ||
2868 | gdb_assert (tu_group != NULL); | |
2869 | lh_cu = &tu_group->per_cu; | |
2870 | } | |
2871 | else | |
2872 | lh_cu = this_cu; | |
2873 | ||
7b9f3c50 DE |
2874 | lh = NULL; |
2875 | slot = NULL; | |
2876 | line_offset = 0; | |
dee91e82 DE |
2877 | |
2878 | attr = dwarf2_attr (comp_unit_die, DW_AT_stmt_list, cu); | |
9291a0cd TT |
2879 | if (attr) |
2880 | { | |
7b9f3c50 DE |
2881 | struct quick_file_names find_entry; |
2882 | ||
2883 | line_offset = DW_UNSND (attr); | |
2884 | ||
2885 | /* We may have already read in this line header (TU line header sharing). | |
2886 | If we have we're done. */ | |
094b34ac DE |
2887 | find_entry.hash.dwo_unit = cu->dwo_unit; |
2888 | find_entry.hash.line_offset.sect_off = line_offset; | |
7b9f3c50 DE |
2889 | slot = htab_find_slot (dwarf2_per_objfile->quick_file_names_table, |
2890 | &find_entry, INSERT); | |
2891 | if (*slot != NULL) | |
2892 | { | |
094b34ac | 2893 | lh_cu->v.quick->file_names = *slot; |
dee91e82 | 2894 | return; |
7b9f3c50 DE |
2895 | } |
2896 | ||
3019eac3 | 2897 | lh = dwarf_decode_line_header (line_offset, cu); |
9291a0cd TT |
2898 | } |
2899 | if (lh == NULL) | |
2900 | { | |
094b34ac | 2901 | lh_cu->v.quick->no_file_data = 1; |
dee91e82 | 2902 | return; |
9291a0cd TT |
2903 | } |
2904 | ||
7b9f3c50 | 2905 | qfn = obstack_alloc (&objfile->objfile_obstack, sizeof (*qfn)); |
094b34ac DE |
2906 | qfn->hash.dwo_unit = cu->dwo_unit; |
2907 | qfn->hash.line_offset.sect_off = line_offset; | |
7b9f3c50 DE |
2908 | gdb_assert (slot != NULL); |
2909 | *slot = qfn; | |
9291a0cd | 2910 | |
dee91e82 | 2911 | find_file_and_directory (comp_unit_die, cu, &name, &comp_dir); |
9291a0cd | 2912 | |
7b9f3c50 DE |
2913 | qfn->num_file_names = lh->num_file_names; |
2914 | qfn->file_names = obstack_alloc (&objfile->objfile_obstack, | |
2915 | lh->num_file_names * sizeof (char *)); | |
9291a0cd | 2916 | for (i = 0; i < lh->num_file_names; ++i) |
7b9f3c50 DE |
2917 | qfn->file_names[i] = file_full_name (i + 1, lh, comp_dir); |
2918 | qfn->real_names = NULL; | |
9291a0cd | 2919 | |
7b9f3c50 | 2920 | free_line_header (lh); |
7b9f3c50 | 2921 | |
094b34ac | 2922 | lh_cu->v.quick->file_names = qfn; |
dee91e82 DE |
2923 | } |
2924 | ||
2925 | /* A helper for the "quick" functions which attempts to read the line | |
2926 | table for THIS_CU. */ | |
2927 | ||
2928 | static struct quick_file_names * | |
2929 | dw2_get_file_names (struct objfile *objfile, | |
2930 | struct dwarf2_per_cu_data *this_cu) | |
2931 | { | |
f4dc4d17 DE |
2932 | /* For TUs this should only be called on the parent group. */ |
2933 | if (this_cu->is_debug_types) | |
2934 | gdb_assert (IS_TYPE_UNIT_GROUP (this_cu)); | |
2935 | ||
dee91e82 DE |
2936 | if (this_cu->v.quick->file_names != NULL) |
2937 | return this_cu->v.quick->file_names; | |
2938 | /* If we know there is no line data, no point in looking again. */ | |
2939 | if (this_cu->v.quick->no_file_data) | |
2940 | return NULL; | |
2941 | ||
3019eac3 DE |
2942 | /* If DWO files are in use, we can still find the DW_AT_stmt_list attribute |
2943 | in the stub for CUs, there's is no need to lookup the DWO file. | |
2944 | However, that's not the case for TUs where DW_AT_stmt_list lives in the | |
2945 | DWO file. */ | |
2946 | if (this_cu->is_debug_types) | |
094b34ac | 2947 | { |
796a7ff8 | 2948 | struct type_unit_group *tu_group = this_cu->type_unit_group; |
094b34ac DE |
2949 | |
2950 | init_cutu_and_read_dies (tu_group->t.first_tu, NULL, 0, 0, | |
2951 | dw2_get_file_names_reader, tu_group); | |
2952 | } | |
3019eac3 DE |
2953 | else |
2954 | init_cutu_and_read_dies_simple (this_cu, dw2_get_file_names_reader, NULL); | |
dee91e82 DE |
2955 | |
2956 | if (this_cu->v.quick->no_file_data) | |
2957 | return NULL; | |
2958 | return this_cu->v.quick->file_names; | |
9291a0cd TT |
2959 | } |
2960 | ||
2961 | /* A helper for the "quick" functions which computes and caches the | |
7b9f3c50 | 2962 | real path for a given file name from the line table. */ |
2fdf6df6 | 2963 | |
9291a0cd | 2964 | static const char * |
7b9f3c50 DE |
2965 | dw2_get_real_path (struct objfile *objfile, |
2966 | struct quick_file_names *qfn, int index) | |
9291a0cd | 2967 | { |
7b9f3c50 DE |
2968 | if (qfn->real_names == NULL) |
2969 | qfn->real_names = OBSTACK_CALLOC (&objfile->objfile_obstack, | |
2970 | qfn->num_file_names, sizeof (char *)); | |
9291a0cd | 2971 | |
7b9f3c50 DE |
2972 | if (qfn->real_names[index] == NULL) |
2973 | qfn->real_names[index] = gdb_realpath (qfn->file_names[index]); | |
9291a0cd | 2974 | |
7b9f3c50 | 2975 | return qfn->real_names[index]; |
9291a0cd TT |
2976 | } |
2977 | ||
2978 | static struct symtab * | |
2979 | dw2_find_last_source_symtab (struct objfile *objfile) | |
2980 | { | |
2981 | int index; | |
ae2de4f8 | 2982 | |
9291a0cd TT |
2983 | dw2_setup (objfile); |
2984 | index = dwarf2_per_objfile->n_comp_units - 1; | |
a0f42c21 | 2985 | return dw2_instantiate_symtab (dw2_get_cu (index)); |
9291a0cd TT |
2986 | } |
2987 | ||
7b9f3c50 DE |
2988 | /* Traversal function for dw2_forget_cached_source_info. */ |
2989 | ||
2990 | static int | |
2991 | dw2_free_cached_file_names (void **slot, void *info) | |
9291a0cd | 2992 | { |
7b9f3c50 | 2993 | struct quick_file_names *file_data = (struct quick_file_names *) *slot; |
9291a0cd | 2994 | |
7b9f3c50 | 2995 | if (file_data->real_names) |
9291a0cd | 2996 | { |
7b9f3c50 | 2997 | int i; |
9291a0cd | 2998 | |
7b9f3c50 | 2999 | for (i = 0; i < file_data->num_file_names; ++i) |
9291a0cd | 3000 | { |
7b9f3c50 DE |
3001 | xfree ((void*) file_data->real_names[i]); |
3002 | file_data->real_names[i] = NULL; | |
9291a0cd TT |
3003 | } |
3004 | } | |
7b9f3c50 DE |
3005 | |
3006 | return 1; | |
3007 | } | |
3008 | ||
3009 | static void | |
3010 | dw2_forget_cached_source_info (struct objfile *objfile) | |
3011 | { | |
3012 | dw2_setup (objfile); | |
3013 | ||
3014 | htab_traverse_noresize (dwarf2_per_objfile->quick_file_names_table, | |
3015 | dw2_free_cached_file_names, NULL); | |
9291a0cd TT |
3016 | } |
3017 | ||
f8eba3c6 TT |
3018 | /* Helper function for dw2_map_symtabs_matching_filename that expands |
3019 | the symtabs and calls the iterator. */ | |
3020 | ||
3021 | static int | |
3022 | dw2_map_expand_apply (struct objfile *objfile, | |
3023 | struct dwarf2_per_cu_data *per_cu, | |
f5b95b50 | 3024 | const char *name, const char *real_path, |
f8eba3c6 TT |
3025 | int (*callback) (struct symtab *, void *), |
3026 | void *data) | |
3027 | { | |
3028 | struct symtab *last_made = objfile->symtabs; | |
3029 | ||
3030 | /* Don't visit already-expanded CUs. */ | |
3031 | if (per_cu->v.quick->symtab) | |
3032 | return 0; | |
3033 | ||
3034 | /* This may expand more than one symtab, and we want to iterate over | |
3035 | all of them. */ | |
a0f42c21 | 3036 | dw2_instantiate_symtab (per_cu); |
f8eba3c6 | 3037 | |
f5b95b50 | 3038 | return iterate_over_some_symtabs (name, real_path, callback, data, |
f8eba3c6 TT |
3039 | objfile->symtabs, last_made); |
3040 | } | |
3041 | ||
3042 | /* Implementation of the map_symtabs_matching_filename method. */ | |
3043 | ||
9291a0cd | 3044 | static int |
f8eba3c6 | 3045 | dw2_map_symtabs_matching_filename (struct objfile *objfile, const char *name, |
f5b95b50 | 3046 | const char *real_path, |
f8eba3c6 TT |
3047 | int (*callback) (struct symtab *, void *), |
3048 | void *data) | |
9291a0cd TT |
3049 | { |
3050 | int i; | |
c011a4f4 | 3051 | const char *name_basename = lbasename (name); |
9291a0cd TT |
3052 | |
3053 | dw2_setup (objfile); | |
ae2de4f8 | 3054 | |
848e3e78 DE |
3055 | /* The rule is CUs specify all the files, including those used by |
3056 | any TU, so there's no need to scan TUs here. */ | |
f4dc4d17 | 3057 | |
848e3e78 | 3058 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
9291a0cd TT |
3059 | { |
3060 | int j; | |
f4dc4d17 | 3061 | struct dwarf2_per_cu_data *per_cu = dw2_get_primary_cu (i); |
7b9f3c50 | 3062 | struct quick_file_names *file_data; |
9291a0cd | 3063 | |
3d7bb9d9 | 3064 | /* We only need to look at symtabs not already expanded. */ |
e254ef6a | 3065 | if (per_cu->v.quick->symtab) |
9291a0cd TT |
3066 | continue; |
3067 | ||
7b9f3c50 DE |
3068 | file_data = dw2_get_file_names (objfile, per_cu); |
3069 | if (file_data == NULL) | |
9291a0cd TT |
3070 | continue; |
3071 | ||
7b9f3c50 | 3072 | for (j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 3073 | { |
7b9f3c50 | 3074 | const char *this_name = file_data->file_names[j]; |
da235a7c | 3075 | const char *this_real_name; |
9291a0cd | 3076 | |
af529f8f | 3077 | if (compare_filenames_for_search (this_name, name)) |
9291a0cd | 3078 | { |
f5b95b50 | 3079 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
f8eba3c6 TT |
3080 | callback, data)) |
3081 | return 1; | |
4aac40c8 | 3082 | } |
9291a0cd | 3083 | |
c011a4f4 DE |
3084 | /* Before we invoke realpath, which can get expensive when many |
3085 | files are involved, do a quick comparison of the basenames. */ | |
3086 | if (! basenames_may_differ | |
3087 | && FILENAME_CMP (lbasename (this_name), name_basename) != 0) | |
3088 | continue; | |
3089 | ||
da235a7c JK |
3090 | this_real_name = dw2_get_real_path (objfile, file_data, j); |
3091 | if (compare_filenames_for_search (this_real_name, name)) | |
9291a0cd | 3092 | { |
da235a7c JK |
3093 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
3094 | callback, data)) | |
3095 | return 1; | |
3096 | } | |
9291a0cd | 3097 | |
da235a7c JK |
3098 | if (real_path != NULL) |
3099 | { | |
af529f8f JK |
3100 | gdb_assert (IS_ABSOLUTE_PATH (real_path)); |
3101 | gdb_assert (IS_ABSOLUTE_PATH (name)); | |
7b9f3c50 | 3102 | if (this_real_name != NULL |
af529f8f | 3103 | && FILENAME_CMP (real_path, this_real_name) == 0) |
9291a0cd | 3104 | { |
f5b95b50 | 3105 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
f8eba3c6 TT |
3106 | callback, data)) |
3107 | return 1; | |
9291a0cd TT |
3108 | } |
3109 | } | |
3110 | } | |
3111 | } | |
3112 | ||
9291a0cd TT |
3113 | return 0; |
3114 | } | |
3115 | ||
da51c347 DE |
3116 | /* Struct used to manage iterating over all CUs looking for a symbol. */ |
3117 | ||
3118 | struct dw2_symtab_iterator | |
9291a0cd | 3119 | { |
da51c347 DE |
3120 | /* The internalized form of .gdb_index. */ |
3121 | struct mapped_index *index; | |
3122 | /* If non-zero, only look for symbols that match BLOCK_INDEX. */ | |
3123 | int want_specific_block; | |
3124 | /* One of GLOBAL_BLOCK or STATIC_BLOCK. | |
3125 | Unused if !WANT_SPECIFIC_BLOCK. */ | |
3126 | int block_index; | |
3127 | /* The kind of symbol we're looking for. */ | |
3128 | domain_enum domain; | |
3129 | /* The list of CUs from the index entry of the symbol, | |
3130 | or NULL if not found. */ | |
3131 | offset_type *vec; | |
3132 | /* The next element in VEC to look at. */ | |
3133 | int next; | |
3134 | /* The number of elements in VEC, or zero if there is no match. */ | |
3135 | int length; | |
3136 | }; | |
9291a0cd | 3137 | |
da51c347 DE |
3138 | /* Initialize the index symtab iterator ITER. |
3139 | If WANT_SPECIFIC_BLOCK is non-zero, only look for symbols | |
3140 | in block BLOCK_INDEX. Otherwise BLOCK_INDEX is ignored. */ | |
2fdf6df6 | 3141 | |
9291a0cd | 3142 | static void |
da51c347 DE |
3143 | dw2_symtab_iter_init (struct dw2_symtab_iterator *iter, |
3144 | struct mapped_index *index, | |
3145 | int want_specific_block, | |
3146 | int block_index, | |
3147 | domain_enum domain, | |
3148 | const char *name) | |
3149 | { | |
3150 | iter->index = index; | |
3151 | iter->want_specific_block = want_specific_block; | |
3152 | iter->block_index = block_index; | |
3153 | iter->domain = domain; | |
3154 | iter->next = 0; | |
3155 | ||
3156 | if (find_slot_in_mapped_hash (index, name, &iter->vec)) | |
3157 | iter->length = MAYBE_SWAP (*iter->vec); | |
3158 | else | |
3159 | { | |
3160 | iter->vec = NULL; | |
3161 | iter->length = 0; | |
3162 | } | |
3163 | } | |
3164 | ||
3165 | /* Return the next matching CU or NULL if there are no more. */ | |
3166 | ||
3167 | static struct dwarf2_per_cu_data * | |
3168 | dw2_symtab_iter_next (struct dw2_symtab_iterator *iter) | |
3169 | { | |
3170 | for ( ; iter->next < iter->length; ++iter->next) | |
3171 | { | |
3172 | offset_type cu_index_and_attrs = | |
3173 | MAYBE_SWAP (iter->vec[iter->next + 1]); | |
3174 | offset_type cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
3175 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (cu_index); | |
3176 | int want_static = iter->block_index != GLOBAL_BLOCK; | |
3177 | /* This value is only valid for index versions >= 7. */ | |
3178 | int is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu_index_and_attrs); | |
3179 | gdb_index_symbol_kind symbol_kind = | |
3180 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
3181 | /* Only check the symbol attributes if they're present. | |
3182 | Indices prior to version 7 don't record them, | |
3183 | and indices >= 7 may elide them for certain symbols | |
3184 | (gold does this). */ | |
3185 | int attrs_valid = | |
3186 | (iter->index->version >= 7 | |
3187 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE); | |
3188 | ||
3189 | /* Skip if already read in. */ | |
3190 | if (per_cu->v.quick->symtab) | |
3191 | continue; | |
3192 | ||
3193 | if (attrs_valid | |
3194 | && iter->want_specific_block | |
3195 | && want_static != is_static) | |
3196 | continue; | |
3197 | ||
3198 | /* Only check the symbol's kind if it has one. */ | |
3199 | if (attrs_valid) | |
3200 | { | |
3201 | switch (iter->domain) | |
3202 | { | |
3203 | case VAR_DOMAIN: | |
3204 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE | |
3205 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION | |
3206 | /* Some types are also in VAR_DOMAIN. */ | |
3207 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
3208 | continue; | |
3209 | break; | |
3210 | case STRUCT_DOMAIN: | |
3211 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
3212 | continue; | |
3213 | break; | |
3214 | case LABEL_DOMAIN: | |
3215 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
3216 | continue; | |
3217 | break; | |
3218 | default: | |
3219 | break; | |
3220 | } | |
3221 | } | |
3222 | ||
3223 | ++iter->next; | |
3224 | return per_cu; | |
3225 | } | |
3226 | ||
3227 | return NULL; | |
3228 | } | |
3229 | ||
3230 | static struct symtab * | |
3231 | dw2_lookup_symbol (struct objfile *objfile, int block_index, | |
3232 | const char *name, domain_enum domain) | |
9291a0cd | 3233 | { |
da51c347 | 3234 | struct symtab *stab_best = NULL; |
156942c7 DE |
3235 | struct mapped_index *index; |
3236 | ||
9291a0cd TT |
3237 | dw2_setup (objfile); |
3238 | ||
156942c7 DE |
3239 | index = dwarf2_per_objfile->index_table; |
3240 | ||
da51c347 | 3241 | /* index is NULL if OBJF_READNOW. */ |
156942c7 | 3242 | if (index) |
9291a0cd | 3243 | { |
da51c347 DE |
3244 | struct dw2_symtab_iterator iter; |
3245 | struct dwarf2_per_cu_data *per_cu; | |
3246 | ||
3247 | dw2_symtab_iter_init (&iter, index, 1, block_index, domain, name); | |
9291a0cd | 3248 | |
da51c347 | 3249 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) |
9291a0cd | 3250 | { |
da51c347 DE |
3251 | struct symbol *sym = NULL; |
3252 | struct symtab *stab = dw2_instantiate_symtab (per_cu); | |
3253 | ||
3254 | /* Some caution must be observed with overloaded functions | |
3255 | and methods, since the index will not contain any overload | |
3256 | information (but NAME might contain it). */ | |
3257 | if (stab->primary) | |
9291a0cd | 3258 | { |
da51c347 DE |
3259 | struct blockvector *bv = BLOCKVECTOR (stab); |
3260 | struct block *block = BLOCKVECTOR_BLOCK (bv, block_index); | |
156942c7 | 3261 | |
da51c347 DE |
3262 | sym = lookup_block_symbol (block, name, domain); |
3263 | } | |
1fd400ff | 3264 | |
da51c347 DE |
3265 | if (sym && strcmp_iw (SYMBOL_SEARCH_NAME (sym), name) == 0) |
3266 | { | |
3267 | if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym))) | |
3268 | return stab; | |
3269 | ||
3270 | stab_best = stab; | |
9291a0cd | 3271 | } |
da51c347 DE |
3272 | |
3273 | /* Keep looking through other CUs. */ | |
9291a0cd TT |
3274 | } |
3275 | } | |
9291a0cd | 3276 | |
da51c347 | 3277 | return stab_best; |
9291a0cd TT |
3278 | } |
3279 | ||
3280 | static void | |
3281 | dw2_print_stats (struct objfile *objfile) | |
3282 | { | |
3283 | int i, count; | |
3284 | ||
3285 | dw2_setup (objfile); | |
3286 | count = 0; | |
1fd400ff | 3287 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units |
d467dd73 | 3288 | + dwarf2_per_objfile->n_type_units); ++i) |
9291a0cd | 3289 | { |
e254ef6a | 3290 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
9291a0cd | 3291 | |
e254ef6a | 3292 | if (!per_cu->v.quick->symtab) |
9291a0cd TT |
3293 | ++count; |
3294 | } | |
3295 | printf_filtered (_(" Number of unread CUs: %d\n"), count); | |
3296 | } | |
3297 | ||
3298 | static void | |
3299 | dw2_dump (struct objfile *objfile) | |
3300 | { | |
3301 | /* Nothing worth printing. */ | |
3302 | } | |
3303 | ||
3304 | static void | |
3305 | dw2_relocate (struct objfile *objfile, struct section_offsets *new_offsets, | |
3306 | struct section_offsets *delta) | |
3307 | { | |
3308 | /* There's nothing to relocate here. */ | |
3309 | } | |
3310 | ||
3311 | static void | |
3312 | dw2_expand_symtabs_for_function (struct objfile *objfile, | |
3313 | const char *func_name) | |
3314 | { | |
da51c347 DE |
3315 | struct mapped_index *index; |
3316 | ||
3317 | dw2_setup (objfile); | |
3318 | ||
3319 | index = dwarf2_per_objfile->index_table; | |
3320 | ||
3321 | /* index is NULL if OBJF_READNOW. */ | |
3322 | if (index) | |
3323 | { | |
3324 | struct dw2_symtab_iterator iter; | |
3325 | struct dwarf2_per_cu_data *per_cu; | |
3326 | ||
3327 | /* Note: It doesn't matter what we pass for block_index here. */ | |
3328 | dw2_symtab_iter_init (&iter, index, 0, GLOBAL_BLOCK, VAR_DOMAIN, | |
3329 | func_name); | |
3330 | ||
3331 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) | |
3332 | dw2_instantiate_symtab (per_cu); | |
3333 | } | |
9291a0cd TT |
3334 | } |
3335 | ||
3336 | static void | |
3337 | dw2_expand_all_symtabs (struct objfile *objfile) | |
3338 | { | |
3339 | int i; | |
3340 | ||
3341 | dw2_setup (objfile); | |
1fd400ff TT |
3342 | |
3343 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units | |
d467dd73 | 3344 | + dwarf2_per_objfile->n_type_units); ++i) |
9291a0cd | 3345 | { |
e254ef6a | 3346 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
9291a0cd | 3347 | |
a0f42c21 | 3348 | dw2_instantiate_symtab (per_cu); |
9291a0cd TT |
3349 | } |
3350 | } | |
3351 | ||
3352 | static void | |
652a8996 JK |
3353 | dw2_expand_symtabs_with_fullname (struct objfile *objfile, |
3354 | const char *fullname) | |
9291a0cd TT |
3355 | { |
3356 | int i; | |
3357 | ||
3358 | dw2_setup (objfile); | |
d4637a04 DE |
3359 | |
3360 | /* We don't need to consider type units here. | |
3361 | This is only called for examining code, e.g. expand_line_sal. | |
3362 | There can be an order of magnitude (or more) more type units | |
3363 | than comp units, and we avoid them if we can. */ | |
3364 | ||
3365 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) | |
9291a0cd TT |
3366 | { |
3367 | int j; | |
e254ef6a | 3368 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
7b9f3c50 | 3369 | struct quick_file_names *file_data; |
9291a0cd | 3370 | |
3d7bb9d9 | 3371 | /* We only need to look at symtabs not already expanded. */ |
e254ef6a | 3372 | if (per_cu->v.quick->symtab) |
9291a0cd TT |
3373 | continue; |
3374 | ||
7b9f3c50 DE |
3375 | file_data = dw2_get_file_names (objfile, per_cu); |
3376 | if (file_data == NULL) | |
9291a0cd TT |
3377 | continue; |
3378 | ||
7b9f3c50 | 3379 | for (j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 3380 | { |
652a8996 JK |
3381 | const char *this_fullname = file_data->file_names[j]; |
3382 | ||
3383 | if (filename_cmp (this_fullname, fullname) == 0) | |
9291a0cd | 3384 | { |
a0f42c21 | 3385 | dw2_instantiate_symtab (per_cu); |
9291a0cd TT |
3386 | break; |
3387 | } | |
3388 | } | |
3389 | } | |
3390 | } | |
3391 | ||
356d9f9d TT |
3392 | /* A helper function for dw2_find_symbol_file that finds the primary |
3393 | file name for a given CU. This is a die_reader_func. */ | |
3394 | ||
3395 | static void | |
3396 | dw2_get_primary_filename_reader (const struct die_reader_specs *reader, | |
3397 | gdb_byte *info_ptr, | |
3398 | struct die_info *comp_unit_die, | |
3399 | int has_children, | |
3400 | void *data) | |
3401 | { | |
3402 | const char **result_ptr = data; | |
3403 | struct dwarf2_cu *cu = reader->cu; | |
3404 | struct attribute *attr; | |
3405 | ||
3406 | attr = dwarf2_attr (comp_unit_die, DW_AT_name, cu); | |
3407 | if (attr == NULL) | |
3408 | *result_ptr = NULL; | |
3409 | else | |
3410 | *result_ptr = DW_STRING (attr); | |
3411 | } | |
3412 | ||
dd786858 | 3413 | static const char * |
9291a0cd TT |
3414 | dw2_find_symbol_file (struct objfile *objfile, const char *name) |
3415 | { | |
e254ef6a | 3416 | struct dwarf2_per_cu_data *per_cu; |
9291a0cd | 3417 | offset_type *vec; |
356d9f9d | 3418 | const char *filename; |
9291a0cd TT |
3419 | |
3420 | dw2_setup (objfile); | |
3421 | ||
ae2de4f8 | 3422 | /* index_table is NULL if OBJF_READNOW. */ |
9291a0cd | 3423 | if (!dwarf2_per_objfile->index_table) |
96408a79 SA |
3424 | { |
3425 | struct symtab *s; | |
3426 | ||
d790cf0a DE |
3427 | ALL_OBJFILE_PRIMARY_SYMTABS (objfile, s) |
3428 | { | |
3429 | struct blockvector *bv = BLOCKVECTOR (s); | |
3430 | const struct block *block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); | |
3431 | struct symbol *sym = lookup_block_symbol (block, name, VAR_DOMAIN); | |
3432 | ||
3433 | if (sym) | |
652a8996 JK |
3434 | { |
3435 | /* Only file extension of returned filename is recognized. */ | |
3436 | return SYMBOL_SYMTAB (sym)->filename; | |
3437 | } | |
d790cf0a | 3438 | } |
96408a79 SA |
3439 | return NULL; |
3440 | } | |
9291a0cd TT |
3441 | |
3442 | if (!find_slot_in_mapped_hash (dwarf2_per_objfile->index_table, | |
3443 | name, &vec)) | |
3444 | return NULL; | |
3445 | ||
3446 | /* Note that this just looks at the very first one named NAME -- but | |
3447 | actually we are looking for a function. find_main_filename | |
3448 | should be rewritten so that it doesn't require a custom hook. It | |
3449 | could just use the ordinary symbol tables. */ | |
3450 | /* vec[0] is the length, which must always be >0. */ | |
156942c7 | 3451 | per_cu = dw2_get_cu (GDB_INDEX_CU_VALUE (MAYBE_SWAP (vec[1]))); |
9291a0cd | 3452 | |
356d9f9d | 3453 | if (per_cu->v.quick->symtab != NULL) |
652a8996 JK |
3454 | { |
3455 | /* Only file extension of returned filename is recognized. */ | |
3456 | return per_cu->v.quick->symtab->filename; | |
3457 | } | |
356d9f9d | 3458 | |
f4dc4d17 DE |
3459 | init_cutu_and_read_dies (per_cu, NULL, 0, 0, |
3460 | dw2_get_primary_filename_reader, &filename); | |
9291a0cd | 3461 | |
652a8996 | 3462 | /* Only file extension of returned filename is recognized. */ |
356d9f9d | 3463 | return filename; |
9291a0cd TT |
3464 | } |
3465 | ||
3466 | static void | |
40658b94 PH |
3467 | dw2_map_matching_symbols (const char * name, domain_enum namespace, |
3468 | struct objfile *objfile, int global, | |
3469 | int (*callback) (struct block *, | |
3470 | struct symbol *, void *), | |
2edb89d3 JK |
3471 | void *data, symbol_compare_ftype *match, |
3472 | symbol_compare_ftype *ordered_compare) | |
9291a0cd | 3473 | { |
40658b94 | 3474 | /* Currently unimplemented; used for Ada. The function can be called if the |
a9e6a4bb JK |
3475 | current language is Ada for a non-Ada objfile using GNU index. As Ada |
3476 | does not look for non-Ada symbols this function should just return. */ | |
9291a0cd TT |
3477 | } |
3478 | ||
3479 | static void | |
f8eba3c6 TT |
3480 | dw2_expand_symtabs_matching |
3481 | (struct objfile *objfile, | |
fbd9ab74 | 3482 | int (*file_matcher) (const char *, void *, int basenames), |
e078317b | 3483 | int (*name_matcher) (const char *, void *), |
f8eba3c6 TT |
3484 | enum search_domain kind, |
3485 | void *data) | |
9291a0cd TT |
3486 | { |
3487 | int i; | |
3488 | offset_type iter; | |
4b5246aa | 3489 | struct mapped_index *index; |
9291a0cd TT |
3490 | |
3491 | dw2_setup (objfile); | |
ae2de4f8 DE |
3492 | |
3493 | /* index_table is NULL if OBJF_READNOW. */ | |
9291a0cd TT |
3494 | if (!dwarf2_per_objfile->index_table) |
3495 | return; | |
4b5246aa | 3496 | index = dwarf2_per_objfile->index_table; |
9291a0cd | 3497 | |
7b08b9eb | 3498 | if (file_matcher != NULL) |
24c79950 TT |
3499 | { |
3500 | struct cleanup *cleanup; | |
3501 | htab_t visited_found, visited_not_found; | |
3502 | ||
3503 | visited_found = htab_create_alloc (10, | |
3504 | htab_hash_pointer, htab_eq_pointer, | |
3505 | NULL, xcalloc, xfree); | |
3506 | cleanup = make_cleanup_htab_delete (visited_found); | |
3507 | visited_not_found = htab_create_alloc (10, | |
3508 | htab_hash_pointer, htab_eq_pointer, | |
3509 | NULL, xcalloc, xfree); | |
3510 | make_cleanup_htab_delete (visited_not_found); | |
3511 | ||
848e3e78 DE |
3512 | /* The rule is CUs specify all the files, including those used by |
3513 | any TU, so there's no need to scan TUs here. */ | |
3514 | ||
3515 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) | |
24c79950 TT |
3516 | { |
3517 | int j; | |
f4dc4d17 | 3518 | struct dwarf2_per_cu_data *per_cu = dw2_get_primary_cu (i); |
24c79950 TT |
3519 | struct quick_file_names *file_data; |
3520 | void **slot; | |
7b08b9eb | 3521 | |
24c79950 | 3522 | per_cu->v.quick->mark = 0; |
3d7bb9d9 | 3523 | |
24c79950 TT |
3524 | /* We only need to look at symtabs not already expanded. */ |
3525 | if (per_cu->v.quick->symtab) | |
3526 | continue; | |
7b08b9eb | 3527 | |
24c79950 TT |
3528 | file_data = dw2_get_file_names (objfile, per_cu); |
3529 | if (file_data == NULL) | |
3530 | continue; | |
7b08b9eb | 3531 | |
24c79950 TT |
3532 | if (htab_find (visited_not_found, file_data) != NULL) |
3533 | continue; | |
3534 | else if (htab_find (visited_found, file_data) != NULL) | |
3535 | { | |
3536 | per_cu->v.quick->mark = 1; | |
3537 | continue; | |
3538 | } | |
3539 | ||
3540 | for (j = 0; j < file_data->num_file_names; ++j) | |
3541 | { | |
da235a7c JK |
3542 | const char *this_real_name; |
3543 | ||
fbd9ab74 | 3544 | if (file_matcher (file_data->file_names[j], data, 0)) |
24c79950 TT |
3545 | { |
3546 | per_cu->v.quick->mark = 1; | |
3547 | break; | |
3548 | } | |
da235a7c JK |
3549 | |
3550 | /* Before we invoke realpath, which can get expensive when many | |
3551 | files are involved, do a quick comparison of the basenames. */ | |
3552 | if (!basenames_may_differ | |
3553 | && !file_matcher (lbasename (file_data->file_names[j]), | |
3554 | data, 1)) | |
3555 | continue; | |
3556 | ||
3557 | this_real_name = dw2_get_real_path (objfile, file_data, j); | |
3558 | if (file_matcher (this_real_name, data, 0)) | |
3559 | { | |
3560 | per_cu->v.quick->mark = 1; | |
3561 | break; | |
3562 | } | |
24c79950 TT |
3563 | } |
3564 | ||
3565 | slot = htab_find_slot (per_cu->v.quick->mark | |
3566 | ? visited_found | |
3567 | : visited_not_found, | |
3568 | file_data, INSERT); | |
3569 | *slot = file_data; | |
3570 | } | |
3571 | ||
3572 | do_cleanups (cleanup); | |
3573 | } | |
9291a0cd | 3574 | |
3876f04e | 3575 | for (iter = 0; iter < index->symbol_table_slots; ++iter) |
9291a0cd TT |
3576 | { |
3577 | offset_type idx = 2 * iter; | |
3578 | const char *name; | |
3579 | offset_type *vec, vec_len, vec_idx; | |
3580 | ||
3876f04e | 3581 | if (index->symbol_table[idx] == 0 && index->symbol_table[idx + 1] == 0) |
9291a0cd TT |
3582 | continue; |
3583 | ||
3876f04e | 3584 | name = index->constant_pool + MAYBE_SWAP (index->symbol_table[idx]); |
9291a0cd | 3585 | |
e078317b | 3586 | if (! (*name_matcher) (name, data)) |
9291a0cd TT |
3587 | continue; |
3588 | ||
3589 | /* The name was matched, now expand corresponding CUs that were | |
3590 | marked. */ | |
4b5246aa | 3591 | vec = (offset_type *) (index->constant_pool |
3876f04e | 3592 | + MAYBE_SWAP (index->symbol_table[idx + 1])); |
9291a0cd TT |
3593 | vec_len = MAYBE_SWAP (vec[0]); |
3594 | for (vec_idx = 0; vec_idx < vec_len; ++vec_idx) | |
3595 | { | |
e254ef6a | 3596 | struct dwarf2_per_cu_data *per_cu; |
156942c7 DE |
3597 | offset_type cu_index_and_attrs = MAYBE_SWAP (vec[vec_idx + 1]); |
3598 | gdb_index_symbol_kind symbol_kind = | |
3599 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
3600 | int cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
3601 | ||
3602 | /* Don't crash on bad data. */ | |
3603 | if (cu_index >= (dwarf2_per_objfile->n_comp_units | |
667e0a4b | 3604 | + dwarf2_per_objfile->n_type_units)) |
156942c7 | 3605 | continue; |
1fd400ff | 3606 | |
156942c7 DE |
3607 | /* Only check the symbol's kind if it has one. |
3608 | Indices prior to version 7 don't record it. */ | |
3609 | if (index->version >= 7) | |
3610 | { | |
3611 | switch (kind) | |
3612 | { | |
3613 | case VARIABLES_DOMAIN: | |
3614 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE) | |
3615 | continue; | |
3616 | break; | |
3617 | case FUNCTIONS_DOMAIN: | |
3618 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION) | |
3619 | continue; | |
3620 | break; | |
3621 | case TYPES_DOMAIN: | |
3622 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
3623 | continue; | |
3624 | break; | |
3625 | default: | |
3626 | break; | |
3627 | } | |
3628 | } | |
3629 | ||
3630 | per_cu = dw2_get_cu (cu_index); | |
7b08b9eb | 3631 | if (file_matcher == NULL || per_cu->v.quick->mark) |
a0f42c21 | 3632 | dw2_instantiate_symtab (per_cu); |
9291a0cd TT |
3633 | } |
3634 | } | |
3635 | } | |
3636 | ||
9703b513 TT |
3637 | /* A helper for dw2_find_pc_sect_symtab which finds the most specific |
3638 | symtab. */ | |
3639 | ||
3640 | static struct symtab * | |
3641 | recursively_find_pc_sect_symtab (struct symtab *symtab, CORE_ADDR pc) | |
3642 | { | |
3643 | int i; | |
3644 | ||
3645 | if (BLOCKVECTOR (symtab) != NULL | |
3646 | && blockvector_contains_pc (BLOCKVECTOR (symtab), pc)) | |
3647 | return symtab; | |
3648 | ||
a3ec0bb1 DE |
3649 | if (symtab->includes == NULL) |
3650 | return NULL; | |
3651 | ||
9703b513 TT |
3652 | for (i = 0; symtab->includes[i]; ++i) |
3653 | { | |
a3ec0bb1 | 3654 | struct symtab *s = symtab->includes[i]; |
9703b513 TT |
3655 | |
3656 | s = recursively_find_pc_sect_symtab (s, pc); | |
3657 | if (s != NULL) | |
3658 | return s; | |
3659 | } | |
3660 | ||
3661 | return NULL; | |
3662 | } | |
3663 | ||
9291a0cd TT |
3664 | static struct symtab * |
3665 | dw2_find_pc_sect_symtab (struct objfile *objfile, | |
3666 | struct minimal_symbol *msymbol, | |
3667 | CORE_ADDR pc, | |
3668 | struct obj_section *section, | |
3669 | int warn_if_readin) | |
3670 | { | |
3671 | struct dwarf2_per_cu_data *data; | |
9703b513 | 3672 | struct symtab *result; |
9291a0cd TT |
3673 | |
3674 | dw2_setup (objfile); | |
3675 | ||
3676 | if (!objfile->psymtabs_addrmap) | |
3677 | return NULL; | |
3678 | ||
3679 | data = addrmap_find (objfile->psymtabs_addrmap, pc); | |
3680 | if (!data) | |
3681 | return NULL; | |
3682 | ||
3683 | if (warn_if_readin && data->v.quick->symtab) | |
abebb8b0 | 3684 | warning (_("(Internal error: pc %s in read in CU, but not in symtab.)"), |
9291a0cd TT |
3685 | paddress (get_objfile_arch (objfile), pc)); |
3686 | ||
9703b513 TT |
3687 | result = recursively_find_pc_sect_symtab (dw2_instantiate_symtab (data), pc); |
3688 | gdb_assert (result != NULL); | |
3689 | return result; | |
9291a0cd TT |
3690 | } |
3691 | ||
9291a0cd | 3692 | static void |
44b13c5a | 3693 | dw2_map_symbol_filenames (struct objfile *objfile, symbol_filename_ftype *fun, |
74e2f255 | 3694 | void *data, int need_fullname) |
9291a0cd TT |
3695 | { |
3696 | int i; | |
24c79950 TT |
3697 | struct cleanup *cleanup; |
3698 | htab_t visited = htab_create_alloc (10, htab_hash_pointer, htab_eq_pointer, | |
3699 | NULL, xcalloc, xfree); | |
9291a0cd | 3700 | |
24c79950 | 3701 | cleanup = make_cleanup_htab_delete (visited); |
9291a0cd | 3702 | dw2_setup (objfile); |
ae2de4f8 | 3703 | |
848e3e78 DE |
3704 | /* The rule is CUs specify all the files, including those used by |
3705 | any TU, so there's no need to scan TUs here. | |
3706 | We can ignore file names coming from already-expanded CUs. */ | |
f4dc4d17 | 3707 | |
848e3e78 | 3708 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
24c79950 TT |
3709 | { |
3710 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); | |
3711 | ||
3712 | if (per_cu->v.quick->symtab) | |
3713 | { | |
3714 | void **slot = htab_find_slot (visited, per_cu->v.quick->file_names, | |
3715 | INSERT); | |
3716 | ||
3717 | *slot = per_cu->v.quick->file_names; | |
3718 | } | |
3719 | } | |
3720 | ||
848e3e78 | 3721 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
9291a0cd TT |
3722 | { |
3723 | int j; | |
f4dc4d17 | 3724 | struct dwarf2_per_cu_data *per_cu = dw2_get_primary_cu (i); |
7b9f3c50 | 3725 | struct quick_file_names *file_data; |
24c79950 | 3726 | void **slot; |
9291a0cd | 3727 | |
3d7bb9d9 | 3728 | /* We only need to look at symtabs not already expanded. */ |
e254ef6a | 3729 | if (per_cu->v.quick->symtab) |
9291a0cd TT |
3730 | continue; |
3731 | ||
7b9f3c50 DE |
3732 | file_data = dw2_get_file_names (objfile, per_cu); |
3733 | if (file_data == NULL) | |
9291a0cd TT |
3734 | continue; |
3735 | ||
24c79950 TT |
3736 | slot = htab_find_slot (visited, file_data, INSERT); |
3737 | if (*slot) | |
3738 | { | |
3739 | /* Already visited. */ | |
3740 | continue; | |
3741 | } | |
3742 | *slot = file_data; | |
3743 | ||
7b9f3c50 | 3744 | for (j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 3745 | { |
74e2f255 DE |
3746 | const char *this_real_name; |
3747 | ||
3748 | if (need_fullname) | |
3749 | this_real_name = dw2_get_real_path (objfile, file_data, j); | |
3750 | else | |
3751 | this_real_name = NULL; | |
7b9f3c50 | 3752 | (*fun) (file_data->file_names[j], this_real_name, data); |
9291a0cd TT |
3753 | } |
3754 | } | |
24c79950 TT |
3755 | |
3756 | do_cleanups (cleanup); | |
9291a0cd TT |
3757 | } |
3758 | ||
3759 | static int | |
3760 | dw2_has_symbols (struct objfile *objfile) | |
3761 | { | |
3762 | return 1; | |
3763 | } | |
3764 | ||
3765 | const struct quick_symbol_functions dwarf2_gdb_index_functions = | |
3766 | { | |
3767 | dw2_has_symbols, | |
3768 | dw2_find_last_source_symtab, | |
3769 | dw2_forget_cached_source_info, | |
f8eba3c6 | 3770 | dw2_map_symtabs_matching_filename, |
9291a0cd | 3771 | dw2_lookup_symbol, |
9291a0cd TT |
3772 | dw2_print_stats, |
3773 | dw2_dump, | |
3774 | dw2_relocate, | |
3775 | dw2_expand_symtabs_for_function, | |
3776 | dw2_expand_all_symtabs, | |
652a8996 | 3777 | dw2_expand_symtabs_with_fullname, |
9291a0cd | 3778 | dw2_find_symbol_file, |
40658b94 | 3779 | dw2_map_matching_symbols, |
9291a0cd TT |
3780 | dw2_expand_symtabs_matching, |
3781 | dw2_find_pc_sect_symtab, | |
9291a0cd TT |
3782 | dw2_map_symbol_filenames |
3783 | }; | |
3784 | ||
3785 | /* Initialize for reading DWARF for this objfile. Return 0 if this | |
3786 | file will use psymtabs, or 1 if using the GNU index. */ | |
3787 | ||
3788 | int | |
3789 | dwarf2_initialize_objfile (struct objfile *objfile) | |
3790 | { | |
3791 | /* If we're about to read full symbols, don't bother with the | |
3792 | indices. In this case we also don't care if some other debug | |
3793 | format is making psymtabs, because they are all about to be | |
3794 | expanded anyway. */ | |
3795 | if ((objfile->flags & OBJF_READNOW)) | |
3796 | { | |
3797 | int i; | |
3798 | ||
3799 | dwarf2_per_objfile->using_index = 1; | |
3800 | create_all_comp_units (objfile); | |
0e50663e | 3801 | create_all_type_units (objfile); |
7b9f3c50 DE |
3802 | dwarf2_per_objfile->quick_file_names_table = |
3803 | create_quick_file_names_table (dwarf2_per_objfile->n_comp_units); | |
9291a0cd | 3804 | |
1fd400ff | 3805 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units |
d467dd73 | 3806 | + dwarf2_per_objfile->n_type_units); ++i) |
9291a0cd | 3807 | { |
e254ef6a | 3808 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
9291a0cd | 3809 | |
e254ef6a DE |
3810 | per_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
3811 | struct dwarf2_per_cu_quick_data); | |
9291a0cd TT |
3812 | } |
3813 | ||
3814 | /* Return 1 so that gdb sees the "quick" functions. However, | |
3815 | these functions will be no-ops because we will have expanded | |
3816 | all symtabs. */ | |
3817 | return 1; | |
3818 | } | |
3819 | ||
3820 | if (dwarf2_read_index (objfile)) | |
3821 | return 1; | |
3822 | ||
9291a0cd TT |
3823 | return 0; |
3824 | } | |
3825 | ||
3826 | \f | |
3827 | ||
dce234bc PP |
3828 | /* Build a partial symbol table. */ |
3829 | ||
3830 | void | |
f29dff0a | 3831 | dwarf2_build_psymtabs (struct objfile *objfile) |
dce234bc | 3832 | { |
c9bf0622 TT |
3833 | volatile struct gdb_exception except; |
3834 | ||
f29dff0a | 3835 | if (objfile->global_psymbols.size == 0 && objfile->static_psymbols.size == 0) |
c906108c SS |
3836 | { |
3837 | init_psymbol_list (objfile, 1024); | |
3838 | } | |
3839 | ||
c9bf0622 TT |
3840 | TRY_CATCH (except, RETURN_MASK_ERROR) |
3841 | { | |
3842 | /* This isn't really ideal: all the data we allocate on the | |
3843 | objfile's obstack is still uselessly kept around. However, | |
3844 | freeing it seems unsafe. */ | |
3845 | struct cleanup *cleanups = make_cleanup_discard_psymtabs (objfile); | |
3846 | ||
3847 | dwarf2_build_psymtabs_hard (objfile); | |
3848 | discard_cleanups (cleanups); | |
3849 | } | |
3850 | if (except.reason < 0) | |
3851 | exception_print (gdb_stderr, except); | |
c906108c | 3852 | } |
c906108c | 3853 | |
1ce1cefd DE |
3854 | /* Return the total length of the CU described by HEADER. */ |
3855 | ||
3856 | static unsigned int | |
3857 | get_cu_length (const struct comp_unit_head *header) | |
3858 | { | |
3859 | return header->initial_length_size + header->length; | |
3860 | } | |
3861 | ||
45452591 DE |
3862 | /* Return TRUE if OFFSET is within CU_HEADER. */ |
3863 | ||
3864 | static inline int | |
b64f50a1 | 3865 | offset_in_cu_p (const struct comp_unit_head *cu_header, sect_offset offset) |
45452591 | 3866 | { |
b64f50a1 | 3867 | sect_offset bottom = { cu_header->offset.sect_off }; |
1ce1cefd | 3868 | sect_offset top = { cu_header->offset.sect_off + get_cu_length (cu_header) }; |
9a619af0 | 3869 | |
b64f50a1 | 3870 | return (offset.sect_off >= bottom.sect_off && offset.sect_off < top.sect_off); |
45452591 DE |
3871 | } |
3872 | ||
3b80fe9b DE |
3873 | /* Find the base address of the compilation unit for range lists and |
3874 | location lists. It will normally be specified by DW_AT_low_pc. | |
3875 | In DWARF-3 draft 4, the base address could be overridden by | |
3876 | DW_AT_entry_pc. It's been removed, but GCC still uses this for | |
3877 | compilation units with discontinuous ranges. */ | |
3878 | ||
3879 | static void | |
3880 | dwarf2_find_base_address (struct die_info *die, struct dwarf2_cu *cu) | |
3881 | { | |
3882 | struct attribute *attr; | |
3883 | ||
3884 | cu->base_known = 0; | |
3885 | cu->base_address = 0; | |
3886 | ||
3887 | attr = dwarf2_attr (die, DW_AT_entry_pc, cu); | |
3888 | if (attr) | |
3889 | { | |
3890 | cu->base_address = DW_ADDR (attr); | |
3891 | cu->base_known = 1; | |
3892 | } | |
3893 | else | |
3894 | { | |
3895 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
3896 | if (attr) | |
3897 | { | |
3898 | cu->base_address = DW_ADDR (attr); | |
3899 | cu->base_known = 1; | |
3900 | } | |
3901 | } | |
3902 | } | |
3903 | ||
93311388 DE |
3904 | /* Read in the comp unit header information from the debug_info at info_ptr. |
3905 | NOTE: This leaves members offset, first_die_offset to be filled in | |
3906 | by the caller. */ | |
107d2387 | 3907 | |
fe1b8b76 | 3908 | static gdb_byte * |
107d2387 | 3909 | read_comp_unit_head (struct comp_unit_head *cu_header, |
fe1b8b76 | 3910 | gdb_byte *info_ptr, bfd *abfd) |
107d2387 AC |
3911 | { |
3912 | int signed_addr; | |
891d2f0b | 3913 | unsigned int bytes_read; |
c764a876 DE |
3914 | |
3915 | cu_header->length = read_initial_length (abfd, info_ptr, &bytes_read); | |
3916 | cu_header->initial_length_size = bytes_read; | |
3917 | cu_header->offset_size = (bytes_read == 4) ? 4 : 8; | |
613e1657 | 3918 | info_ptr += bytes_read; |
107d2387 AC |
3919 | cu_header->version = read_2_bytes (abfd, info_ptr); |
3920 | info_ptr += 2; | |
b64f50a1 JK |
3921 | cu_header->abbrev_offset.sect_off = read_offset (abfd, info_ptr, cu_header, |
3922 | &bytes_read); | |
613e1657 | 3923 | info_ptr += bytes_read; |
107d2387 AC |
3924 | cu_header->addr_size = read_1_byte (abfd, info_ptr); |
3925 | info_ptr += 1; | |
3926 | signed_addr = bfd_get_sign_extend_vma (abfd); | |
3927 | if (signed_addr < 0) | |
8e65ff28 | 3928 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 3929 | _("read_comp_unit_head: dwarf from non elf file")); |
107d2387 | 3930 | cu_header->signed_addr_p = signed_addr; |
c764a876 | 3931 | |
107d2387 AC |
3932 | return info_ptr; |
3933 | } | |
3934 | ||
36586728 TT |
3935 | /* Helper function that returns the proper abbrev section for |
3936 | THIS_CU. */ | |
3937 | ||
3938 | static struct dwarf2_section_info * | |
3939 | get_abbrev_section_for_cu (struct dwarf2_per_cu_data *this_cu) | |
3940 | { | |
3941 | struct dwarf2_section_info *abbrev; | |
3942 | ||
3943 | if (this_cu->is_dwz) | |
3944 | abbrev = &dwarf2_get_dwz_file ()->abbrev; | |
3945 | else | |
3946 | abbrev = &dwarf2_per_objfile->abbrev; | |
3947 | ||
3948 | return abbrev; | |
3949 | } | |
3950 | ||
9ff913ba DE |
3951 | /* Subroutine of read_and_check_comp_unit_head and |
3952 | read_and_check_type_unit_head to simplify them. | |
3953 | Perform various error checking on the header. */ | |
3954 | ||
3955 | static void | |
3956 | error_check_comp_unit_head (struct comp_unit_head *header, | |
4bdcc0c1 DE |
3957 | struct dwarf2_section_info *section, |
3958 | struct dwarf2_section_info *abbrev_section) | |
9ff913ba DE |
3959 | { |
3960 | bfd *abfd = section->asection->owner; | |
3961 | const char *filename = bfd_get_filename (abfd); | |
3962 | ||
3963 | if (header->version != 2 && header->version != 3 && header->version != 4) | |
3964 | error (_("Dwarf Error: wrong version in compilation unit header " | |
3965 | "(is %d, should be 2, 3, or 4) [in module %s]"), header->version, | |
3966 | filename); | |
3967 | ||
b64f50a1 | 3968 | if (header->abbrev_offset.sect_off |
36586728 | 3969 | >= dwarf2_section_size (dwarf2_per_objfile->objfile, abbrev_section)) |
9ff913ba DE |
3970 | error (_("Dwarf Error: bad offset (0x%lx) in compilation unit header " |
3971 | "(offset 0x%lx + 6) [in module %s]"), | |
b64f50a1 | 3972 | (long) header->abbrev_offset.sect_off, (long) header->offset.sect_off, |
9ff913ba DE |
3973 | filename); |
3974 | ||
3975 | /* Cast to unsigned long to use 64-bit arithmetic when possible to | |
3976 | avoid potential 32-bit overflow. */ | |
1ce1cefd | 3977 | if (((unsigned long) header->offset.sect_off + get_cu_length (header)) |
9ff913ba DE |
3978 | > section->size) |
3979 | error (_("Dwarf Error: bad length (0x%lx) in compilation unit header " | |
3980 | "(offset 0x%lx + 0) [in module %s]"), | |
b64f50a1 | 3981 | (long) header->length, (long) header->offset.sect_off, |
9ff913ba DE |
3982 | filename); |
3983 | } | |
3984 | ||
3985 | /* Read in a CU/TU header and perform some basic error checking. | |
3986 | The contents of the header are stored in HEADER. | |
3987 | The result is a pointer to the start of the first DIE. */ | |
adabb602 | 3988 | |
fe1b8b76 | 3989 | static gdb_byte * |
9ff913ba DE |
3990 | read_and_check_comp_unit_head (struct comp_unit_head *header, |
3991 | struct dwarf2_section_info *section, | |
4bdcc0c1 | 3992 | struct dwarf2_section_info *abbrev_section, |
9ff913ba DE |
3993 | gdb_byte *info_ptr, |
3994 | int is_debug_types_section) | |
72bf9492 | 3995 | { |
fe1b8b76 | 3996 | gdb_byte *beg_of_comp_unit = info_ptr; |
9ff913ba | 3997 | bfd *abfd = section->asection->owner; |
72bf9492 | 3998 | |
b64f50a1 | 3999 | header->offset.sect_off = beg_of_comp_unit - section->buffer; |
adabb602 | 4000 | |
72bf9492 DJ |
4001 | info_ptr = read_comp_unit_head (header, info_ptr, abfd); |
4002 | ||
460c1c54 CC |
4003 | /* If we're reading a type unit, skip over the signature and |
4004 | type_offset fields. */ | |
b0df02fd | 4005 | if (is_debug_types_section) |
460c1c54 CC |
4006 | info_ptr += 8 /*signature*/ + header->offset_size; |
4007 | ||
b64f50a1 | 4008 | header->first_die_offset.cu_off = info_ptr - beg_of_comp_unit; |
adabb602 | 4009 | |
4bdcc0c1 | 4010 | error_check_comp_unit_head (header, section, abbrev_section); |
72bf9492 DJ |
4011 | |
4012 | return info_ptr; | |
4013 | } | |
4014 | ||
348e048f DE |
4015 | /* Read in the types comp unit header information from .debug_types entry at |
4016 | types_ptr. The result is a pointer to one past the end of the header. */ | |
4017 | ||
4018 | static gdb_byte * | |
9ff913ba DE |
4019 | read_and_check_type_unit_head (struct comp_unit_head *header, |
4020 | struct dwarf2_section_info *section, | |
4bdcc0c1 | 4021 | struct dwarf2_section_info *abbrev_section, |
9ff913ba | 4022 | gdb_byte *info_ptr, |
dee91e82 DE |
4023 | ULONGEST *signature, |
4024 | cu_offset *type_offset_in_tu) | |
348e048f | 4025 | { |
9ff913ba DE |
4026 | gdb_byte *beg_of_comp_unit = info_ptr; |
4027 | bfd *abfd = section->asection->owner; | |
348e048f | 4028 | |
b64f50a1 | 4029 | header->offset.sect_off = beg_of_comp_unit - section->buffer; |
348e048f | 4030 | |
9ff913ba | 4031 | info_ptr = read_comp_unit_head (header, info_ptr, abfd); |
348e048f | 4032 | |
9ff913ba DE |
4033 | /* If we're reading a type unit, skip over the signature and |
4034 | type_offset fields. */ | |
4035 | if (signature != NULL) | |
4036 | *signature = read_8_bytes (abfd, info_ptr); | |
4037 | info_ptr += 8; | |
dee91e82 DE |
4038 | if (type_offset_in_tu != NULL) |
4039 | type_offset_in_tu->cu_off = read_offset_1 (abfd, info_ptr, | |
4040 | header->offset_size); | |
9ff913ba DE |
4041 | info_ptr += header->offset_size; |
4042 | ||
b64f50a1 | 4043 | header->first_die_offset.cu_off = info_ptr - beg_of_comp_unit; |
348e048f | 4044 | |
4bdcc0c1 | 4045 | error_check_comp_unit_head (header, section, abbrev_section); |
9ff913ba DE |
4046 | |
4047 | return info_ptr; | |
348e048f DE |
4048 | } |
4049 | ||
f4dc4d17 DE |
4050 | /* Fetch the abbreviation table offset from a comp or type unit header. */ |
4051 | ||
4052 | static sect_offset | |
4053 | read_abbrev_offset (struct dwarf2_section_info *section, | |
4054 | sect_offset offset) | |
4055 | { | |
4056 | bfd *abfd = section->asection->owner; | |
4057 | gdb_byte *info_ptr; | |
4058 | unsigned int length, initial_length_size, offset_size; | |
4059 | sect_offset abbrev_offset; | |
4060 | ||
4061 | dwarf2_read_section (dwarf2_per_objfile->objfile, section); | |
4062 | info_ptr = section->buffer + offset.sect_off; | |
4063 | length = read_initial_length (abfd, info_ptr, &initial_length_size); | |
4064 | offset_size = initial_length_size == 4 ? 4 : 8; | |
4065 | info_ptr += initial_length_size + 2 /*version*/; | |
4066 | abbrev_offset.sect_off = read_offset_1 (abfd, info_ptr, offset_size); | |
4067 | return abbrev_offset; | |
4068 | } | |
4069 | ||
aaa75496 JB |
4070 | /* Allocate a new partial symtab for file named NAME and mark this new |
4071 | partial symtab as being an include of PST. */ | |
4072 | ||
4073 | static void | |
4074 | dwarf2_create_include_psymtab (char *name, struct partial_symtab *pst, | |
4075 | struct objfile *objfile) | |
4076 | { | |
4077 | struct partial_symtab *subpst = allocate_psymtab (name, objfile); | |
4078 | ||
fbd9ab74 JK |
4079 | if (!IS_ABSOLUTE_PATH (subpst->filename)) |
4080 | { | |
4081 | /* It shares objfile->objfile_obstack. */ | |
4082 | subpst->dirname = pst->dirname; | |
4083 | } | |
4084 | ||
aaa75496 JB |
4085 | subpst->section_offsets = pst->section_offsets; |
4086 | subpst->textlow = 0; | |
4087 | subpst->texthigh = 0; | |
4088 | ||
4089 | subpst->dependencies = (struct partial_symtab **) | |
4090 | obstack_alloc (&objfile->objfile_obstack, | |
4091 | sizeof (struct partial_symtab *)); | |
4092 | subpst->dependencies[0] = pst; | |
4093 | subpst->number_of_dependencies = 1; | |
4094 | ||
4095 | subpst->globals_offset = 0; | |
4096 | subpst->n_global_syms = 0; | |
4097 | subpst->statics_offset = 0; | |
4098 | subpst->n_static_syms = 0; | |
4099 | subpst->symtab = NULL; | |
4100 | subpst->read_symtab = pst->read_symtab; | |
4101 | subpst->readin = 0; | |
4102 | ||
4103 | /* No private part is necessary for include psymtabs. This property | |
4104 | can be used to differentiate between such include psymtabs and | |
10b3939b | 4105 | the regular ones. */ |
58a9656e | 4106 | subpst->read_symtab_private = NULL; |
aaa75496 JB |
4107 | } |
4108 | ||
4109 | /* Read the Line Number Program data and extract the list of files | |
4110 | included by the source file represented by PST. Build an include | |
d85a05f0 | 4111 | partial symtab for each of these included files. */ |
aaa75496 JB |
4112 | |
4113 | static void | |
4114 | dwarf2_build_include_psymtabs (struct dwarf2_cu *cu, | |
dee91e82 DE |
4115 | struct die_info *die, |
4116 | struct partial_symtab *pst) | |
aaa75496 | 4117 | { |
d85a05f0 DJ |
4118 | struct line_header *lh = NULL; |
4119 | struct attribute *attr; | |
aaa75496 | 4120 | |
d85a05f0 DJ |
4121 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
4122 | if (attr) | |
3019eac3 | 4123 | lh = dwarf_decode_line_header (DW_UNSND (attr), cu); |
aaa75496 JB |
4124 | if (lh == NULL) |
4125 | return; /* No linetable, so no includes. */ | |
4126 | ||
c6da4cef | 4127 | /* NOTE: pst->dirname is DW_AT_comp_dir (if present). */ |
f3f5162e | 4128 | dwarf_decode_lines (lh, pst->dirname, cu, pst, 1); |
aaa75496 JB |
4129 | |
4130 | free_line_header (lh); | |
4131 | } | |
4132 | ||
348e048f | 4133 | static hashval_t |
52dc124a | 4134 | hash_signatured_type (const void *item) |
348e048f | 4135 | { |
52dc124a | 4136 | const struct signatured_type *sig_type = item; |
9a619af0 | 4137 | |
348e048f | 4138 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
52dc124a | 4139 | return sig_type->signature; |
348e048f DE |
4140 | } |
4141 | ||
4142 | static int | |
52dc124a | 4143 | eq_signatured_type (const void *item_lhs, const void *item_rhs) |
348e048f DE |
4144 | { |
4145 | const struct signatured_type *lhs = item_lhs; | |
4146 | const struct signatured_type *rhs = item_rhs; | |
9a619af0 | 4147 | |
348e048f DE |
4148 | return lhs->signature == rhs->signature; |
4149 | } | |
4150 | ||
1fd400ff TT |
4151 | /* Allocate a hash table for signatured types. */ |
4152 | ||
4153 | static htab_t | |
673bfd45 | 4154 | allocate_signatured_type_table (struct objfile *objfile) |
1fd400ff TT |
4155 | { |
4156 | return htab_create_alloc_ex (41, | |
52dc124a DE |
4157 | hash_signatured_type, |
4158 | eq_signatured_type, | |
1fd400ff TT |
4159 | NULL, |
4160 | &objfile->objfile_obstack, | |
4161 | hashtab_obstack_allocate, | |
4162 | dummy_obstack_deallocate); | |
4163 | } | |
4164 | ||
d467dd73 | 4165 | /* A helper function to add a signatured type CU to a table. */ |
1fd400ff TT |
4166 | |
4167 | static int | |
d467dd73 | 4168 | add_signatured_type_cu_to_table (void **slot, void *datum) |
1fd400ff TT |
4169 | { |
4170 | struct signatured_type *sigt = *slot; | |
b4dd5633 | 4171 | struct signatured_type ***datap = datum; |
1fd400ff | 4172 | |
b4dd5633 | 4173 | **datap = sigt; |
1fd400ff TT |
4174 | ++*datap; |
4175 | ||
4176 | return 1; | |
4177 | } | |
4178 | ||
3019eac3 | 4179 | /* Create the hash table of all entries in the .debug_types section. |
80626a55 DE |
4180 | DWO_FILE is a pointer to the DWO file for .debug_types.dwo, |
4181 | NULL otherwise. | |
4182 | Note: This function processes DWO files only, not DWP files. | |
3019eac3 DE |
4183 | The result is a pointer to the hash table or NULL if there are |
4184 | no types. */ | |
348e048f | 4185 | |
3019eac3 DE |
4186 | static htab_t |
4187 | create_debug_types_hash_table (struct dwo_file *dwo_file, | |
4188 | VEC (dwarf2_section_info_def) *types) | |
348e048f | 4189 | { |
3019eac3 | 4190 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8b70b953 | 4191 | htab_t types_htab = NULL; |
8b70b953 TT |
4192 | int ix; |
4193 | struct dwarf2_section_info *section; | |
4bdcc0c1 | 4194 | struct dwarf2_section_info *abbrev_section; |
348e048f | 4195 | |
3019eac3 DE |
4196 | if (VEC_empty (dwarf2_section_info_def, types)) |
4197 | return NULL; | |
348e048f | 4198 | |
4bdcc0c1 DE |
4199 | abbrev_section = (dwo_file != NULL |
4200 | ? &dwo_file->sections.abbrev | |
4201 | : &dwarf2_per_objfile->abbrev); | |
4202 | ||
09406207 DE |
4203 | if (dwarf2_read_debug) |
4204 | fprintf_unfiltered (gdb_stdlog, "Reading .debug_types%s for %s:\n", | |
4205 | dwo_file ? ".dwo" : "", | |
4206 | bfd_get_filename (abbrev_section->asection->owner)); | |
4207 | ||
8b70b953 | 4208 | for (ix = 0; |
3019eac3 | 4209 | VEC_iterate (dwarf2_section_info_def, types, ix, section); |
8b70b953 TT |
4210 | ++ix) |
4211 | { | |
3019eac3 | 4212 | bfd *abfd; |
8b70b953 | 4213 | gdb_byte *info_ptr, *end_ptr; |
36586728 | 4214 | struct dwarf2_section_info *abbrev_section; |
348e048f | 4215 | |
8b70b953 TT |
4216 | dwarf2_read_section (objfile, section); |
4217 | info_ptr = section->buffer; | |
348e048f | 4218 | |
8b70b953 TT |
4219 | if (info_ptr == NULL) |
4220 | continue; | |
348e048f | 4221 | |
3019eac3 DE |
4222 | /* We can't set abfd until now because the section may be empty or |
4223 | not present, in which case section->asection will be NULL. */ | |
4224 | abfd = section->asection->owner; | |
4225 | ||
36586728 TT |
4226 | if (dwo_file) |
4227 | abbrev_section = &dwo_file->sections.abbrev; | |
4228 | else | |
4229 | abbrev_section = &dwarf2_per_objfile->abbrev; | |
4230 | ||
8b70b953 | 4231 | if (types_htab == NULL) |
3019eac3 DE |
4232 | { |
4233 | if (dwo_file) | |
4234 | types_htab = allocate_dwo_unit_table (objfile); | |
4235 | else | |
4236 | types_htab = allocate_signatured_type_table (objfile); | |
4237 | } | |
348e048f | 4238 | |
dee91e82 DE |
4239 | /* We don't use init_cutu_and_read_dies_simple, or some such, here |
4240 | because we don't need to read any dies: the signature is in the | |
4241 | header. */ | |
8b70b953 TT |
4242 | |
4243 | end_ptr = info_ptr + section->size; | |
4244 | while (info_ptr < end_ptr) | |
4245 | { | |
b64f50a1 | 4246 | sect_offset offset; |
3019eac3 | 4247 | cu_offset type_offset_in_tu; |
8b70b953 | 4248 | ULONGEST signature; |
52dc124a | 4249 | struct signatured_type *sig_type; |
3019eac3 | 4250 | struct dwo_unit *dwo_tu; |
8b70b953 TT |
4251 | void **slot; |
4252 | gdb_byte *ptr = info_ptr; | |
9ff913ba | 4253 | struct comp_unit_head header; |
dee91e82 | 4254 | unsigned int length; |
348e048f | 4255 | |
b64f50a1 | 4256 | offset.sect_off = ptr - section->buffer; |
348e048f | 4257 | |
8b70b953 | 4258 | /* We need to read the type's signature in order to build the hash |
9ff913ba | 4259 | table, but we don't need anything else just yet. */ |
348e048f | 4260 | |
4bdcc0c1 DE |
4261 | ptr = read_and_check_type_unit_head (&header, section, |
4262 | abbrev_section, ptr, | |
3019eac3 | 4263 | &signature, &type_offset_in_tu); |
6caca83c | 4264 | |
1ce1cefd | 4265 | length = get_cu_length (&header); |
dee91e82 | 4266 | |
6caca83c | 4267 | /* Skip dummy type units. */ |
dee91e82 DE |
4268 | if (ptr >= info_ptr + length |
4269 | || peek_abbrev_code (abfd, ptr) == 0) | |
6caca83c | 4270 | { |
1ce1cefd | 4271 | info_ptr += length; |
6caca83c CC |
4272 | continue; |
4273 | } | |
8b70b953 | 4274 | |
3019eac3 DE |
4275 | if (dwo_file) |
4276 | { | |
4277 | sig_type = NULL; | |
4278 | dwo_tu = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
4279 | struct dwo_unit); | |
4280 | dwo_tu->dwo_file = dwo_file; | |
4281 | dwo_tu->signature = signature; | |
4282 | dwo_tu->type_offset_in_tu = type_offset_in_tu; | |
4283 | dwo_tu->info_or_types_section = section; | |
4284 | dwo_tu->offset = offset; | |
4285 | dwo_tu->length = length; | |
4286 | } | |
4287 | else | |
4288 | { | |
4289 | /* N.B.: type_offset is not usable if this type uses a DWO file. | |
4290 | The real type_offset is in the DWO file. */ | |
4291 | dwo_tu = NULL; | |
4292 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
4293 | struct signatured_type); | |
4294 | sig_type->signature = signature; | |
4295 | sig_type->type_offset_in_tu = type_offset_in_tu; | |
4296 | sig_type->per_cu.objfile = objfile; | |
4297 | sig_type->per_cu.is_debug_types = 1; | |
4298 | sig_type->per_cu.info_or_types_section = section; | |
4299 | sig_type->per_cu.offset = offset; | |
4300 | sig_type->per_cu.length = length; | |
4301 | } | |
8b70b953 | 4302 | |
3019eac3 DE |
4303 | slot = htab_find_slot (types_htab, |
4304 | dwo_file ? (void*) dwo_tu : (void *) sig_type, | |
4305 | INSERT); | |
8b70b953 TT |
4306 | gdb_assert (slot != NULL); |
4307 | if (*slot != NULL) | |
4308 | { | |
3019eac3 DE |
4309 | sect_offset dup_offset; |
4310 | ||
4311 | if (dwo_file) | |
4312 | { | |
4313 | const struct dwo_unit *dup_tu = *slot; | |
4314 | ||
4315 | dup_offset = dup_tu->offset; | |
4316 | } | |
4317 | else | |
4318 | { | |
4319 | const struct signatured_type *dup_tu = *slot; | |
4320 | ||
4321 | dup_offset = dup_tu->per_cu.offset; | |
4322 | } | |
b3c8eb43 | 4323 | |
8b70b953 TT |
4324 | complaint (&symfile_complaints, |
4325 | _("debug type entry at offset 0x%x is duplicate to the " | |
4326 | "entry at offset 0x%x, signature 0x%s"), | |
3019eac3 | 4327 | offset.sect_off, dup_offset.sect_off, |
8b70b953 | 4328 | phex (signature, sizeof (signature))); |
8b70b953 | 4329 | } |
3019eac3 | 4330 | *slot = dwo_file ? (void *) dwo_tu : (void *) sig_type; |
348e048f | 4331 | |
09406207 | 4332 | if (dwarf2_read_debug) |
8b70b953 | 4333 | fprintf_unfiltered (gdb_stdlog, " offset 0x%x, signature 0x%s\n", |
b64f50a1 JK |
4334 | offset.sect_off, |
4335 | phex (signature, sizeof (signature))); | |
348e048f | 4336 | |
dee91e82 | 4337 | info_ptr += length; |
8b70b953 | 4338 | } |
348e048f DE |
4339 | } |
4340 | ||
3019eac3 DE |
4341 | return types_htab; |
4342 | } | |
4343 | ||
4344 | /* Create the hash table of all entries in the .debug_types section, | |
4345 | and initialize all_type_units. | |
4346 | The result is zero if there is an error (e.g. missing .debug_types section), | |
4347 | otherwise non-zero. */ | |
4348 | ||
4349 | static int | |
4350 | create_all_type_units (struct objfile *objfile) | |
4351 | { | |
4352 | htab_t types_htab; | |
b4dd5633 | 4353 | struct signatured_type **iter; |
3019eac3 DE |
4354 | |
4355 | types_htab = create_debug_types_hash_table (NULL, dwarf2_per_objfile->types); | |
4356 | if (types_htab == NULL) | |
4357 | { | |
4358 | dwarf2_per_objfile->signatured_types = NULL; | |
4359 | return 0; | |
4360 | } | |
4361 | ||
348e048f DE |
4362 | dwarf2_per_objfile->signatured_types = types_htab; |
4363 | ||
d467dd73 DE |
4364 | dwarf2_per_objfile->n_type_units = htab_elements (types_htab); |
4365 | dwarf2_per_objfile->all_type_units | |
1fd400ff | 4366 | = obstack_alloc (&objfile->objfile_obstack, |
d467dd73 | 4367 | dwarf2_per_objfile->n_type_units |
b4dd5633 | 4368 | * sizeof (struct signatured_type *)); |
d467dd73 DE |
4369 | iter = &dwarf2_per_objfile->all_type_units[0]; |
4370 | htab_traverse_noresize (types_htab, add_signatured_type_cu_to_table, &iter); | |
4371 | gdb_assert (iter - &dwarf2_per_objfile->all_type_units[0] | |
4372 | == dwarf2_per_objfile->n_type_units); | |
1fd400ff | 4373 | |
348e048f DE |
4374 | return 1; |
4375 | } | |
4376 | ||
380bca97 | 4377 | /* Lookup a signature based type for DW_FORM_ref_sig8. |
e319fa28 | 4378 | Returns NULL if signature SIG is not present in the table. */ |
348e048f DE |
4379 | |
4380 | static struct signatured_type * | |
e319fa28 | 4381 | lookup_signatured_type (ULONGEST sig) |
348e048f DE |
4382 | { |
4383 | struct signatured_type find_entry, *entry; | |
4384 | ||
4385 | if (dwarf2_per_objfile->signatured_types == NULL) | |
4386 | { | |
4387 | complaint (&symfile_complaints, | |
55f1336d | 4388 | _("missing `.debug_types' section for DW_FORM_ref_sig8 die")); |
dcc07052 | 4389 | return NULL; |
348e048f DE |
4390 | } |
4391 | ||
4392 | find_entry.signature = sig; | |
4393 | entry = htab_find (dwarf2_per_objfile->signatured_types, &find_entry); | |
4394 | return entry; | |
4395 | } | |
42e7ad6c DE |
4396 | \f |
4397 | /* Low level DIE reading support. */ | |
348e048f | 4398 | |
d85a05f0 DJ |
4399 | /* Initialize a die_reader_specs struct from a dwarf2_cu struct. */ |
4400 | ||
4401 | static void | |
4402 | init_cu_die_reader (struct die_reader_specs *reader, | |
dee91e82 | 4403 | struct dwarf2_cu *cu, |
3019eac3 DE |
4404 | struct dwarf2_section_info *section, |
4405 | struct dwo_file *dwo_file) | |
d85a05f0 | 4406 | { |
fceca515 | 4407 | gdb_assert (section->readin && section->buffer != NULL); |
dee91e82 | 4408 | reader->abfd = section->asection->owner; |
d85a05f0 | 4409 | reader->cu = cu; |
3019eac3 | 4410 | reader->dwo_file = dwo_file; |
dee91e82 DE |
4411 | reader->die_section = section; |
4412 | reader->buffer = section->buffer; | |
f664829e | 4413 | reader->buffer_end = section->buffer + section->size; |
d85a05f0 DJ |
4414 | } |
4415 | ||
fd820528 | 4416 | /* Initialize a CU (or TU) and read its DIEs. |
3019eac3 | 4417 | If the CU defers to a DWO file, read the DWO file as well. |
dee91e82 | 4418 | |
f4dc4d17 DE |
4419 | ABBREV_TABLE, if non-NULL, is the abbreviation table to use. |
4420 | Otherwise the table specified in the comp unit header is read in and used. | |
4421 | This is an optimization for when we already have the abbrev table. | |
4422 | ||
dee91e82 DE |
4423 | If USE_EXISTING_CU is non-zero, and THIS_CU->cu is non-NULL, then use it. |
4424 | Otherwise, a new CU is allocated with xmalloc. | |
4425 | ||
4426 | If KEEP is non-zero, then if we allocated a dwarf2_cu we add it to | |
4427 | read_in_chain. Otherwise the dwarf2_cu data is freed at the end. | |
4428 | ||
4429 | WARNING: If THIS_CU is a "dummy CU" (used as filler by the incremental | |
fd820528 | 4430 | linker) then DIE_READER_FUNC will not get called. */ |
aaa75496 | 4431 | |
70221824 | 4432 | static void |
fd820528 | 4433 | init_cutu_and_read_dies (struct dwarf2_per_cu_data *this_cu, |
f4dc4d17 | 4434 | struct abbrev_table *abbrev_table, |
fd820528 DE |
4435 | int use_existing_cu, int keep, |
4436 | die_reader_func_ftype *die_reader_func, | |
4437 | void *data) | |
c906108c | 4438 | { |
dee91e82 | 4439 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3019eac3 DE |
4440 | struct dwarf2_section_info *section = this_cu->info_or_types_section; |
4441 | bfd *abfd = section->asection->owner; | |
dee91e82 DE |
4442 | struct dwarf2_cu *cu; |
4443 | gdb_byte *begin_info_ptr, *info_ptr; | |
4444 | struct die_reader_specs reader; | |
d85a05f0 | 4445 | struct die_info *comp_unit_die; |
dee91e82 | 4446 | int has_children; |
d85a05f0 | 4447 | struct attribute *attr; |
dee91e82 DE |
4448 | struct cleanup *cleanups, *free_cu_cleanup = NULL; |
4449 | struct signatured_type *sig_type = NULL; | |
4bdcc0c1 | 4450 | struct dwarf2_section_info *abbrev_section; |
42e7ad6c DE |
4451 | /* Non-zero if CU currently points to a DWO file and we need to |
4452 | reread it. When this happens we need to reread the skeleton die | |
4453 | before we can reread the DWO file. */ | |
4454 | int rereading_dwo_cu = 0; | |
c906108c | 4455 | |
09406207 DE |
4456 | if (dwarf2_die_debug) |
4457 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset 0x%x\n", | |
4458 | this_cu->is_debug_types ? "type" : "comp", | |
4459 | this_cu->offset.sect_off); | |
4460 | ||
dee91e82 DE |
4461 | if (use_existing_cu) |
4462 | gdb_assert (keep); | |
23745b47 | 4463 | |
dee91e82 DE |
4464 | cleanups = make_cleanup (null_cleanup, NULL); |
4465 | ||
4466 | /* This is cheap if the section is already read in. */ | |
4467 | dwarf2_read_section (objfile, section); | |
4468 | ||
4469 | begin_info_ptr = info_ptr = section->buffer + this_cu->offset.sect_off; | |
36586728 TT |
4470 | |
4471 | abbrev_section = get_abbrev_section_for_cu (this_cu); | |
dee91e82 DE |
4472 | |
4473 | if (use_existing_cu && this_cu->cu != NULL) | |
4474 | { | |
4475 | cu = this_cu->cu; | |
42e7ad6c DE |
4476 | |
4477 | /* If this CU is from a DWO file we need to start over, we need to | |
4478 | refetch the attributes from the skeleton CU. | |
4479 | This could be optimized by retrieving those attributes from when we | |
4480 | were here the first time: the previous comp_unit_die was stored in | |
4481 | comp_unit_obstack. But there's no data yet that we need this | |
4482 | optimization. */ | |
4483 | if (cu->dwo_unit != NULL) | |
4484 | rereading_dwo_cu = 1; | |
dee91e82 DE |
4485 | } |
4486 | else | |
4487 | { | |
4488 | /* If !use_existing_cu, this_cu->cu must be NULL. */ | |
4489 | gdb_assert (this_cu->cu == NULL); | |
4490 | ||
4491 | cu = xmalloc (sizeof (*cu)); | |
4492 | init_one_comp_unit (cu, this_cu); | |
4493 | ||
4494 | /* If an error occurs while loading, release our storage. */ | |
4495 | free_cu_cleanup = make_cleanup (free_heap_comp_unit, cu); | |
42e7ad6c | 4496 | } |
dee91e82 | 4497 | |
42e7ad6c DE |
4498 | if (cu->header.first_die_offset.cu_off != 0 && ! rereading_dwo_cu) |
4499 | { | |
4500 | /* We already have the header, there's no need to read it in again. */ | |
4501 | info_ptr += cu->header.first_die_offset.cu_off; | |
4502 | } | |
4503 | else | |
4504 | { | |
3019eac3 | 4505 | if (this_cu->is_debug_types) |
dee91e82 DE |
4506 | { |
4507 | ULONGEST signature; | |
42e7ad6c | 4508 | cu_offset type_offset_in_tu; |
dee91e82 | 4509 | |
4bdcc0c1 DE |
4510 | info_ptr = read_and_check_type_unit_head (&cu->header, section, |
4511 | abbrev_section, info_ptr, | |
42e7ad6c DE |
4512 | &signature, |
4513 | &type_offset_in_tu); | |
dee91e82 | 4514 | |
42e7ad6c DE |
4515 | /* Since per_cu is the first member of struct signatured_type, |
4516 | we can go from a pointer to one to a pointer to the other. */ | |
4517 | sig_type = (struct signatured_type *) this_cu; | |
4518 | gdb_assert (sig_type->signature == signature); | |
4519 | gdb_assert (sig_type->type_offset_in_tu.cu_off | |
4520 | == type_offset_in_tu.cu_off); | |
dee91e82 DE |
4521 | gdb_assert (this_cu->offset.sect_off == cu->header.offset.sect_off); |
4522 | ||
42e7ad6c DE |
4523 | /* LENGTH has not been set yet for type units if we're |
4524 | using .gdb_index. */ | |
1ce1cefd | 4525 | this_cu->length = get_cu_length (&cu->header); |
3019eac3 DE |
4526 | |
4527 | /* Establish the type offset that can be used to lookup the type. */ | |
4528 | sig_type->type_offset_in_section.sect_off = | |
4529 | this_cu->offset.sect_off + sig_type->type_offset_in_tu.cu_off; | |
dee91e82 DE |
4530 | } |
4531 | else | |
4532 | { | |
4bdcc0c1 DE |
4533 | info_ptr = read_and_check_comp_unit_head (&cu->header, section, |
4534 | abbrev_section, | |
4535 | info_ptr, 0); | |
dee91e82 DE |
4536 | |
4537 | gdb_assert (this_cu->offset.sect_off == cu->header.offset.sect_off); | |
1ce1cefd | 4538 | gdb_assert (this_cu->length == get_cu_length (&cu->header)); |
dee91e82 DE |
4539 | } |
4540 | } | |
10b3939b | 4541 | |
6caca83c | 4542 | /* Skip dummy compilation units. */ |
dee91e82 | 4543 | if (info_ptr >= begin_info_ptr + this_cu->length |
6caca83c CC |
4544 | || peek_abbrev_code (abfd, info_ptr) == 0) |
4545 | { | |
dee91e82 | 4546 | do_cleanups (cleanups); |
21b2bd31 | 4547 | return; |
6caca83c CC |
4548 | } |
4549 | ||
433df2d4 DE |
4550 | /* If we don't have them yet, read the abbrevs for this compilation unit. |
4551 | And if we need to read them now, make sure they're freed when we're | |
42e7ad6c DE |
4552 | done. Note that it's important that if the CU had an abbrev table |
4553 | on entry we don't free it when we're done: Somewhere up the call stack | |
4554 | it may be in use. */ | |
f4dc4d17 DE |
4555 | if (abbrev_table != NULL) |
4556 | { | |
4557 | gdb_assert (cu->abbrev_table == NULL); | |
4558 | gdb_assert (cu->header.abbrev_offset.sect_off | |
4559 | == abbrev_table->offset.sect_off); | |
4560 | cu->abbrev_table = abbrev_table; | |
4561 | } | |
4562 | else if (cu->abbrev_table == NULL) | |
dee91e82 | 4563 | { |
4bdcc0c1 | 4564 | dwarf2_read_abbrevs (cu, abbrev_section); |
dee91e82 DE |
4565 | make_cleanup (dwarf2_free_abbrev_table, cu); |
4566 | } | |
42e7ad6c DE |
4567 | else if (rereading_dwo_cu) |
4568 | { | |
4569 | dwarf2_free_abbrev_table (cu); | |
4570 | dwarf2_read_abbrevs (cu, abbrev_section); | |
4571 | } | |
af703f96 | 4572 | |
dee91e82 | 4573 | /* Read the top level CU/TU die. */ |
3019eac3 | 4574 | init_cu_die_reader (&reader, cu, section, NULL); |
dee91e82 | 4575 | info_ptr = read_full_die (&reader, &comp_unit_die, info_ptr, &has_children); |
93311388 | 4576 | |
3019eac3 DE |
4577 | /* If we have a DWO stub, process it and then read in the DWO file. |
4578 | Note that if USE_EXISTING_OK != 0, and THIS_CU->cu already contains | |
4579 | a DWO CU, that this test will fail. */ | |
4580 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_name, cu); | |
4581 | if (attr) | |
4582 | { | |
15d034d0 | 4583 | const char *dwo_name = DW_STRING (attr); |
42e7ad6c | 4584 | const char *comp_dir_string; |
3019eac3 DE |
4585 | struct dwo_unit *dwo_unit; |
4586 | ULONGEST signature; /* Or dwo_id. */ | |
42e7ad6c | 4587 | struct attribute *comp_dir, *stmt_list, *low_pc, *high_pc, *ranges; |
3019eac3 | 4588 | int i,num_extra_attrs; |
4bdcc0c1 | 4589 | struct dwarf2_section_info *dwo_abbrev_section; |
3019eac3 DE |
4590 | |
4591 | if (has_children) | |
4592 | error (_("Dwarf Error: compilation unit with DW_AT_GNU_dwo_name" | |
4593 | " has children (offset 0x%x) [in module %s]"), | |
4594 | this_cu->offset.sect_off, bfd_get_filename (abfd)); | |
4595 | ||
4596 | /* These attributes aren't processed until later: | |
4597 | DW_AT_stmt_list, DW_AT_low_pc, DW_AT_high_pc, DW_AT_ranges. | |
4598 | However, the attribute is found in the stub which we won't have later. | |
4599 | In order to not impose this complication on the rest of the code, | |
4600 | we read them here and copy them to the DWO CU/TU die. */ | |
3019eac3 DE |
4601 | |
4602 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
4603 | DWO file. */ | |
42e7ad6c | 4604 | stmt_list = NULL; |
3019eac3 DE |
4605 | if (! this_cu->is_debug_types) |
4606 | stmt_list = dwarf2_attr (comp_unit_die, DW_AT_stmt_list, cu); | |
4607 | low_pc = dwarf2_attr (comp_unit_die, DW_AT_low_pc, cu); | |
4608 | high_pc = dwarf2_attr (comp_unit_die, DW_AT_high_pc, cu); | |
4609 | ranges = dwarf2_attr (comp_unit_die, DW_AT_ranges, cu); | |
42e7ad6c | 4610 | comp_dir = dwarf2_attr (comp_unit_die, DW_AT_comp_dir, cu); |
3019eac3 DE |
4611 | |
4612 | /* There should be a DW_AT_addr_base attribute here (if needed). | |
4613 | We need the value before we can process DW_FORM_GNU_addr_index. */ | |
4614 | cu->addr_base = 0; | |
3019eac3 DE |
4615 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_addr_base, cu); |
4616 | if (attr) | |
2e3cf129 DE |
4617 | cu->addr_base = DW_UNSND (attr); |
4618 | ||
4619 | /* There should be a DW_AT_ranges_base attribute here (if needed). | |
4620 | We need the value before we can process DW_AT_ranges. */ | |
4621 | cu->ranges_base = 0; | |
4622 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_ranges_base, cu); | |
4623 | if (attr) | |
4624 | cu->ranges_base = DW_UNSND (attr); | |
3019eac3 DE |
4625 | |
4626 | if (this_cu->is_debug_types) | |
4627 | { | |
4628 | gdb_assert (sig_type != NULL); | |
4629 | signature = sig_type->signature; | |
4630 | } | |
4631 | else | |
4632 | { | |
4633 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_id, cu); | |
4634 | if (! attr) | |
4635 | error (_("Dwarf Error: missing dwo_id [in module %s]"), | |
4636 | dwo_name); | |
4637 | signature = DW_UNSND (attr); | |
4638 | } | |
4639 | ||
4640 | /* We may need the comp_dir in order to find the DWO file. */ | |
42e7ad6c DE |
4641 | comp_dir_string = NULL; |
4642 | if (comp_dir) | |
4643 | comp_dir_string = DW_STRING (comp_dir); | |
3019eac3 DE |
4644 | |
4645 | if (this_cu->is_debug_types) | |
42e7ad6c | 4646 | dwo_unit = lookup_dwo_type_unit (sig_type, dwo_name, comp_dir_string); |
3019eac3 | 4647 | else |
42e7ad6c | 4648 | dwo_unit = lookup_dwo_comp_unit (this_cu, dwo_name, comp_dir_string, |
3019eac3 DE |
4649 | signature); |
4650 | ||
4651 | if (dwo_unit == NULL) | |
4652 | { | |
4653 | error (_("Dwarf Error: CU at offset 0x%x references unknown DWO" | |
4654 | " with ID %s [in module %s]"), | |
4655 | this_cu->offset.sect_off, | |
4656 | phex (signature, sizeof (signature)), | |
4657 | objfile->name); | |
4658 | } | |
4659 | ||
4660 | /* Set up for reading the DWO CU/TU. */ | |
4661 | cu->dwo_unit = dwo_unit; | |
4662 | section = dwo_unit->info_or_types_section; | |
80626a55 | 4663 | dwarf2_read_section (objfile, section); |
3019eac3 | 4664 | begin_info_ptr = info_ptr = section->buffer + dwo_unit->offset.sect_off; |
4bdcc0c1 | 4665 | dwo_abbrev_section = &dwo_unit->dwo_file->sections.abbrev; |
3019eac3 DE |
4666 | init_cu_die_reader (&reader, cu, section, dwo_unit->dwo_file); |
4667 | ||
4668 | if (this_cu->is_debug_types) | |
4669 | { | |
4670 | ULONGEST signature; | |
80626a55 | 4671 | cu_offset type_offset_in_tu; |
3019eac3 | 4672 | |
4bdcc0c1 DE |
4673 | info_ptr = read_and_check_type_unit_head (&cu->header, section, |
4674 | dwo_abbrev_section, | |
4675 | info_ptr, | |
80626a55 DE |
4676 | &signature, |
4677 | &type_offset_in_tu); | |
3019eac3 DE |
4678 | gdb_assert (sig_type->signature == signature); |
4679 | gdb_assert (dwo_unit->offset.sect_off == cu->header.offset.sect_off); | |
80626a55 DE |
4680 | /* For DWOs coming from DWP files, we don't know the CU length |
4681 | nor the type's offset in the TU until now. */ | |
4682 | dwo_unit->length = get_cu_length (&cu->header); | |
4683 | dwo_unit->type_offset_in_tu = type_offset_in_tu; | |
3019eac3 DE |
4684 | |
4685 | /* Establish the type offset that can be used to lookup the type. | |
4686 | For DWO files, we don't know it until now. */ | |
4687 | sig_type->type_offset_in_section.sect_off = | |
4688 | dwo_unit->offset.sect_off + dwo_unit->type_offset_in_tu.cu_off; | |
4689 | } | |
4690 | else | |
4691 | { | |
4bdcc0c1 DE |
4692 | info_ptr = read_and_check_comp_unit_head (&cu->header, section, |
4693 | dwo_abbrev_section, | |
4694 | info_ptr, 0); | |
3019eac3 | 4695 | gdb_assert (dwo_unit->offset.sect_off == cu->header.offset.sect_off); |
80626a55 DE |
4696 | /* For DWOs coming from DWP files, we don't know the CU length |
4697 | until now. */ | |
4698 | dwo_unit->length = get_cu_length (&cu->header); | |
3019eac3 DE |
4699 | } |
4700 | ||
4701 | /* Discard the original CU's abbrev table, and read the DWO's. */ | |
f4dc4d17 DE |
4702 | if (abbrev_table == NULL) |
4703 | { | |
4704 | dwarf2_free_abbrev_table (cu); | |
4705 | dwarf2_read_abbrevs (cu, dwo_abbrev_section); | |
4706 | } | |
4707 | else | |
4708 | { | |
4709 | dwarf2_read_abbrevs (cu, dwo_abbrev_section); | |
4710 | make_cleanup (dwarf2_free_abbrev_table, cu); | |
4711 | } | |
3019eac3 DE |
4712 | |
4713 | /* Read in the die, but leave space to copy over the attributes | |
4714 | from the stub. This has the benefit of simplifying the rest of | |
4715 | the code - all the real work is done here. */ | |
4716 | num_extra_attrs = ((stmt_list != NULL) | |
4717 | + (low_pc != NULL) | |
4718 | + (high_pc != NULL) | |
42e7ad6c DE |
4719 | + (ranges != NULL) |
4720 | + (comp_dir != NULL)); | |
3019eac3 DE |
4721 | info_ptr = read_full_die_1 (&reader, &comp_unit_die, info_ptr, |
4722 | &has_children, num_extra_attrs); | |
4723 | ||
4724 | /* Copy over the attributes from the stub to the DWO die. */ | |
4725 | i = comp_unit_die->num_attrs; | |
4726 | if (stmt_list != NULL) | |
4727 | comp_unit_die->attrs[i++] = *stmt_list; | |
4728 | if (low_pc != NULL) | |
4729 | comp_unit_die->attrs[i++] = *low_pc; | |
4730 | if (high_pc != NULL) | |
4731 | comp_unit_die->attrs[i++] = *high_pc; | |
4732 | if (ranges != NULL) | |
4733 | comp_unit_die->attrs[i++] = *ranges; | |
42e7ad6c DE |
4734 | if (comp_dir != NULL) |
4735 | comp_unit_die->attrs[i++] = *comp_dir; | |
3019eac3 DE |
4736 | comp_unit_die->num_attrs += num_extra_attrs; |
4737 | ||
4738 | /* Skip dummy compilation units. */ | |
4739 | if (info_ptr >= begin_info_ptr + dwo_unit->length | |
4740 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
4741 | { | |
4742 | do_cleanups (cleanups); | |
4743 | return; | |
4744 | } | |
4745 | } | |
4746 | ||
dee91e82 DE |
4747 | die_reader_func (&reader, info_ptr, comp_unit_die, has_children, data); |
4748 | ||
4749 | if (free_cu_cleanup != NULL) | |
348e048f | 4750 | { |
dee91e82 DE |
4751 | if (keep) |
4752 | { | |
4753 | /* We've successfully allocated this compilation unit. Let our | |
4754 | caller clean it up when finished with it. */ | |
4755 | discard_cleanups (free_cu_cleanup); | |
4756 | ||
4757 | /* We can only discard free_cu_cleanup and all subsequent cleanups. | |
4758 | So we have to manually free the abbrev table. */ | |
4759 | dwarf2_free_abbrev_table (cu); | |
4760 | ||
4761 | /* Link this CU into read_in_chain. */ | |
4762 | this_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
4763 | dwarf2_per_objfile->read_in_chain = this_cu; | |
4764 | } | |
4765 | else | |
4766 | do_cleanups (free_cu_cleanup); | |
348e048f | 4767 | } |
dee91e82 DE |
4768 | |
4769 | do_cleanups (cleanups); | |
4770 | } | |
4771 | ||
3019eac3 DE |
4772 | /* Read CU/TU THIS_CU in section SECTION, |
4773 | but do not follow DW_AT_GNU_dwo_name if present. | |
80626a55 DE |
4774 | DWOP_FILE, if non-NULL, is the DWO/DWP file to read (the caller is assumed |
4775 | to have already done the lookup to find the DWO/DWP file). | |
dee91e82 DE |
4776 | |
4777 | The caller is required to fill in THIS_CU->section, THIS_CU->offset, and | |
3019eac3 | 4778 | THIS_CU->is_debug_types, but nothing else. |
dee91e82 DE |
4779 | |
4780 | We fill in THIS_CU->length. | |
4781 | ||
4782 | WARNING: If THIS_CU is a "dummy CU" (used as filler by the incremental | |
4783 | linker) then DIE_READER_FUNC will not get called. | |
4784 | ||
4785 | THIS_CU->cu is always freed when done. | |
3019eac3 DE |
4786 | This is done in order to not leave THIS_CU->cu in a state where we have |
4787 | to care whether it refers to the "main" CU or the DWO CU. */ | |
dee91e82 DE |
4788 | |
4789 | static void | |
4790 | init_cutu_and_read_dies_no_follow (struct dwarf2_per_cu_data *this_cu, | |
4791 | struct dwarf2_section_info *abbrev_section, | |
3019eac3 | 4792 | struct dwo_file *dwo_file, |
dee91e82 DE |
4793 | die_reader_func_ftype *die_reader_func, |
4794 | void *data) | |
4795 | { | |
4796 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
3019eac3 DE |
4797 | struct dwarf2_section_info *section = this_cu->info_or_types_section; |
4798 | bfd *abfd = section->asection->owner; | |
dee91e82 DE |
4799 | struct dwarf2_cu cu; |
4800 | gdb_byte *begin_info_ptr, *info_ptr; | |
4801 | struct die_reader_specs reader; | |
4802 | struct cleanup *cleanups; | |
4803 | struct die_info *comp_unit_die; | |
4804 | int has_children; | |
4805 | ||
09406207 DE |
4806 | if (dwarf2_die_debug) |
4807 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset 0x%x\n", | |
4808 | this_cu->is_debug_types ? "type" : "comp", | |
4809 | this_cu->offset.sect_off); | |
4810 | ||
dee91e82 DE |
4811 | gdb_assert (this_cu->cu == NULL); |
4812 | ||
dee91e82 DE |
4813 | /* This is cheap if the section is already read in. */ |
4814 | dwarf2_read_section (objfile, section); | |
4815 | ||
4816 | init_one_comp_unit (&cu, this_cu); | |
4817 | ||
4818 | cleanups = make_cleanup (free_stack_comp_unit, &cu); | |
4819 | ||
4820 | begin_info_ptr = info_ptr = section->buffer + this_cu->offset.sect_off; | |
4bdcc0c1 DE |
4821 | info_ptr = read_and_check_comp_unit_head (&cu.header, section, |
4822 | abbrev_section, info_ptr, | |
3019eac3 | 4823 | this_cu->is_debug_types); |
dee91e82 | 4824 | |
1ce1cefd | 4825 | this_cu->length = get_cu_length (&cu.header); |
dee91e82 DE |
4826 | |
4827 | /* Skip dummy compilation units. */ | |
4828 | if (info_ptr >= begin_info_ptr + this_cu->length | |
4829 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
c906108c | 4830 | { |
dee91e82 | 4831 | do_cleanups (cleanups); |
21b2bd31 | 4832 | return; |
93311388 | 4833 | } |
72bf9492 | 4834 | |
dee91e82 DE |
4835 | dwarf2_read_abbrevs (&cu, abbrev_section); |
4836 | make_cleanup (dwarf2_free_abbrev_table, &cu); | |
4837 | ||
3019eac3 | 4838 | init_cu_die_reader (&reader, &cu, section, dwo_file); |
dee91e82 DE |
4839 | info_ptr = read_full_die (&reader, &comp_unit_die, info_ptr, &has_children); |
4840 | ||
4841 | die_reader_func (&reader, info_ptr, comp_unit_die, has_children, data); | |
4842 | ||
4843 | do_cleanups (cleanups); | |
4844 | } | |
4845 | ||
3019eac3 DE |
4846 | /* Read a CU/TU, except that this does not look for DW_AT_GNU_dwo_name and |
4847 | does not lookup the specified DWO file. | |
4848 | This cannot be used to read DWO files. | |
dee91e82 DE |
4849 | |
4850 | THIS_CU->cu is always freed when done. | |
3019eac3 DE |
4851 | This is done in order to not leave THIS_CU->cu in a state where we have |
4852 | to care whether it refers to the "main" CU or the DWO CU. | |
4853 | We can revisit this if the data shows there's a performance issue. */ | |
dee91e82 DE |
4854 | |
4855 | static void | |
4856 | init_cutu_and_read_dies_simple (struct dwarf2_per_cu_data *this_cu, | |
4857 | die_reader_func_ftype *die_reader_func, | |
4858 | void *data) | |
4859 | { | |
4860 | init_cutu_and_read_dies_no_follow (this_cu, | |
36586728 | 4861 | get_abbrev_section_for_cu (this_cu), |
3019eac3 | 4862 | NULL, |
dee91e82 DE |
4863 | die_reader_func, data); |
4864 | } | |
4865 | ||
f4dc4d17 DE |
4866 | /* Create a psymtab named NAME and assign it to PER_CU. |
4867 | ||
4868 | The caller must fill in the following details: | |
4869 | dirname, textlow, texthigh. */ | |
4870 | ||
4871 | static struct partial_symtab * | |
4872 | create_partial_symtab (struct dwarf2_per_cu_data *per_cu, const char *name) | |
4873 | { | |
4874 | struct objfile *objfile = per_cu->objfile; | |
4875 | struct partial_symtab *pst; | |
4876 | ||
4877 | pst = start_psymtab_common (objfile, objfile->section_offsets, | |
4878 | name, 0, | |
4879 | objfile->global_psymbols.next, | |
4880 | objfile->static_psymbols.next); | |
4881 | ||
4882 | pst->psymtabs_addrmap_supported = 1; | |
4883 | ||
4884 | /* This is the glue that links PST into GDB's symbol API. */ | |
4885 | pst->read_symtab_private = per_cu; | |
257e7a09 | 4886 | pst->read_symtab = dwarf2_read_symtab; |
f4dc4d17 DE |
4887 | per_cu->v.psymtab = pst; |
4888 | ||
4889 | return pst; | |
4890 | } | |
4891 | ||
dee91e82 DE |
4892 | /* die_reader_func for process_psymtab_comp_unit. */ |
4893 | ||
4894 | static void | |
4895 | process_psymtab_comp_unit_reader (const struct die_reader_specs *reader, | |
4896 | gdb_byte *info_ptr, | |
4897 | struct die_info *comp_unit_die, | |
4898 | int has_children, | |
4899 | void *data) | |
4900 | { | |
4901 | struct dwarf2_cu *cu = reader->cu; | |
4902 | struct objfile *objfile = cu->objfile; | |
4903 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; | |
dee91e82 DE |
4904 | struct attribute *attr; |
4905 | CORE_ADDR baseaddr; | |
4906 | CORE_ADDR best_lowpc = 0, best_highpc = 0; | |
4907 | struct partial_symtab *pst; | |
4908 | int has_pc_info; | |
4909 | const char *filename; | |
95554aad | 4910 | int *want_partial_unit_ptr = data; |
dee91e82 | 4911 | |
95554aad TT |
4912 | if (comp_unit_die->tag == DW_TAG_partial_unit |
4913 | && (want_partial_unit_ptr == NULL | |
4914 | || !*want_partial_unit_ptr)) | |
dee91e82 DE |
4915 | return; |
4916 | ||
f4dc4d17 DE |
4917 | gdb_assert (! per_cu->is_debug_types); |
4918 | ||
95554aad | 4919 | prepare_one_comp_unit (cu, comp_unit_die, language_minimal); |
dee91e82 DE |
4920 | |
4921 | cu->list_in_scope = &file_symbols; | |
c906108c | 4922 | |
93311388 | 4923 | /* Allocate a new partial symbol table structure. */ |
dee91e82 | 4924 | attr = dwarf2_attr (comp_unit_die, DW_AT_name, cu); |
3e2a0cee TT |
4925 | if (attr == NULL || !DW_STRING (attr)) |
4926 | filename = ""; | |
4927 | else | |
4928 | filename = DW_STRING (attr); | |
72bf9492 | 4929 | |
f4dc4d17 DE |
4930 | pst = create_partial_symtab (per_cu, filename); |
4931 | ||
4932 | /* This must be done before calling dwarf2_build_include_psymtabs. */ | |
dee91e82 | 4933 | attr = dwarf2_attr (comp_unit_die, DW_AT_comp_dir, cu); |
d85a05f0 DJ |
4934 | if (attr != NULL) |
4935 | pst->dirname = DW_STRING (attr); | |
72bf9492 | 4936 | |
93311388 | 4937 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
e7c27a73 | 4938 | |
dee91e82 | 4939 | dwarf2_find_base_address (comp_unit_die, cu); |
d85a05f0 | 4940 | |
93311388 DE |
4941 | /* Possibly set the default values of LOWPC and HIGHPC from |
4942 | `DW_AT_ranges'. */ | |
d85a05f0 | 4943 | has_pc_info = dwarf2_get_pc_bounds (comp_unit_die, &best_lowpc, |
dee91e82 | 4944 | &best_highpc, cu, pst); |
d85a05f0 | 4945 | if (has_pc_info == 1 && best_lowpc < best_highpc) |
93311388 DE |
4946 | /* Store the contiguous range if it is not empty; it can be empty for |
4947 | CUs with no code. */ | |
4948 | addrmap_set_empty (objfile->psymtabs_addrmap, | |
d85a05f0 DJ |
4949 | best_lowpc + baseaddr, |
4950 | best_highpc + baseaddr - 1, pst); | |
93311388 DE |
4951 | |
4952 | /* Check if comp unit has_children. | |
4953 | If so, read the rest of the partial symbols from this comp unit. | |
0963b4bd | 4954 | If not, there's no more debug_info for this comp unit. */ |
d85a05f0 | 4955 | if (has_children) |
93311388 DE |
4956 | { |
4957 | struct partial_die_info *first_die; | |
4958 | CORE_ADDR lowpc, highpc; | |
31ffec48 | 4959 | |
93311388 DE |
4960 | lowpc = ((CORE_ADDR) -1); |
4961 | highpc = ((CORE_ADDR) 0); | |
c906108c | 4962 | |
dee91e82 | 4963 | first_die = load_partial_dies (reader, info_ptr, 1); |
c906108c | 4964 | |
93311388 | 4965 | scan_partial_symbols (first_die, &lowpc, &highpc, |
dee91e82 | 4966 | ! has_pc_info, cu); |
57c22c6c | 4967 | |
93311388 DE |
4968 | /* If we didn't find a lowpc, set it to highpc to avoid |
4969 | complaints from `maint check'. */ | |
4970 | if (lowpc == ((CORE_ADDR) -1)) | |
4971 | lowpc = highpc; | |
10b3939b | 4972 | |
93311388 DE |
4973 | /* If the compilation unit didn't have an explicit address range, |
4974 | then use the information extracted from its child dies. */ | |
d85a05f0 | 4975 | if (! has_pc_info) |
93311388 | 4976 | { |
d85a05f0 DJ |
4977 | best_lowpc = lowpc; |
4978 | best_highpc = highpc; | |
93311388 DE |
4979 | } |
4980 | } | |
d85a05f0 DJ |
4981 | pst->textlow = best_lowpc + baseaddr; |
4982 | pst->texthigh = best_highpc + baseaddr; | |
c906108c | 4983 | |
93311388 DE |
4984 | pst->n_global_syms = objfile->global_psymbols.next - |
4985 | (objfile->global_psymbols.list + pst->globals_offset); | |
4986 | pst->n_static_syms = objfile->static_psymbols.next - | |
4987 | (objfile->static_psymbols.list + pst->statics_offset); | |
5c80ed9d | 4988 | sort_pst_symbols (objfile, pst); |
c906108c | 4989 | |
796a7ff8 | 4990 | if (!VEC_empty (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs)) |
95554aad TT |
4991 | { |
4992 | int i; | |
796a7ff8 | 4993 | int len = VEC_length (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs); |
95554aad TT |
4994 | struct dwarf2_per_cu_data *iter; |
4995 | ||
4996 | /* Fill in 'dependencies' here; we fill in 'users' in a | |
4997 | post-pass. */ | |
4998 | pst->number_of_dependencies = len; | |
4999 | pst->dependencies = obstack_alloc (&objfile->objfile_obstack, | |
5000 | len * sizeof (struct symtab *)); | |
5001 | for (i = 0; | |
796a7ff8 | 5002 | VEC_iterate (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs, |
95554aad TT |
5003 | i, iter); |
5004 | ++i) | |
5005 | pst->dependencies[i] = iter->v.psymtab; | |
5006 | ||
796a7ff8 | 5007 | VEC_free (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs); |
95554aad TT |
5008 | } |
5009 | ||
f4dc4d17 DE |
5010 | /* Get the list of files included in the current compilation unit, |
5011 | and build a psymtab for each of them. */ | |
5012 | dwarf2_build_include_psymtabs (cu, comp_unit_die, pst); | |
09406207 DE |
5013 | |
5014 | if (dwarf2_read_debug) | |
5015 | { | |
5016 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
5017 | ||
5018 | fprintf_unfiltered (gdb_stdlog, | |
844226d6 | 5019 | "Psymtab for %s unit @0x%x: %s - %s" |
09406207 DE |
5020 | ", %d global, %d static syms\n", |
5021 | per_cu->is_debug_types ? "type" : "comp", | |
5022 | per_cu->offset.sect_off, | |
5023 | paddress (gdbarch, pst->textlow), | |
5024 | paddress (gdbarch, pst->texthigh), | |
5025 | pst->n_global_syms, pst->n_static_syms); | |
5026 | } | |
dee91e82 | 5027 | } |
ae038cb0 | 5028 | |
dee91e82 DE |
5029 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. |
5030 | Process compilation unit THIS_CU for a psymtab. */ | |
5031 | ||
5032 | static void | |
95554aad TT |
5033 | process_psymtab_comp_unit (struct dwarf2_per_cu_data *this_cu, |
5034 | int want_partial_unit) | |
dee91e82 DE |
5035 | { |
5036 | /* If this compilation unit was already read in, free the | |
5037 | cached copy in order to read it in again. This is | |
5038 | necessary because we skipped some symbols when we first | |
5039 | read in the compilation unit (see load_partial_dies). | |
5040 | This problem could be avoided, but the benefit is unclear. */ | |
5041 | if (this_cu->cu != NULL) | |
5042 | free_one_cached_comp_unit (this_cu); | |
5043 | ||
3019eac3 | 5044 | gdb_assert (! this_cu->is_debug_types); |
f4dc4d17 DE |
5045 | init_cutu_and_read_dies (this_cu, NULL, 0, 0, |
5046 | process_psymtab_comp_unit_reader, | |
95554aad | 5047 | &want_partial_unit); |
dee91e82 DE |
5048 | |
5049 | /* Age out any secondary CUs. */ | |
5050 | age_cached_comp_units (); | |
93311388 | 5051 | } |
ff013f42 | 5052 | |
f4dc4d17 DE |
5053 | static hashval_t |
5054 | hash_type_unit_group (const void *item) | |
5055 | { | |
094b34ac | 5056 | const struct type_unit_group *tu_group = item; |
f4dc4d17 | 5057 | |
094b34ac | 5058 | return hash_stmt_list_entry (&tu_group->hash); |
f4dc4d17 | 5059 | } |
348e048f DE |
5060 | |
5061 | static int | |
f4dc4d17 | 5062 | eq_type_unit_group (const void *item_lhs, const void *item_rhs) |
348e048f | 5063 | { |
f4dc4d17 DE |
5064 | const struct type_unit_group *lhs = item_lhs; |
5065 | const struct type_unit_group *rhs = item_rhs; | |
348e048f | 5066 | |
094b34ac | 5067 | return eq_stmt_list_entry (&lhs->hash, &rhs->hash); |
f4dc4d17 | 5068 | } |
348e048f | 5069 | |
f4dc4d17 DE |
5070 | /* Allocate a hash table for type unit groups. */ |
5071 | ||
5072 | static htab_t | |
5073 | allocate_type_unit_groups_table (void) | |
5074 | { | |
5075 | return htab_create_alloc_ex (3, | |
5076 | hash_type_unit_group, | |
5077 | eq_type_unit_group, | |
5078 | NULL, | |
5079 | &dwarf2_per_objfile->objfile->objfile_obstack, | |
5080 | hashtab_obstack_allocate, | |
5081 | dummy_obstack_deallocate); | |
5082 | } | |
dee91e82 | 5083 | |
f4dc4d17 DE |
5084 | /* Type units that don't have DW_AT_stmt_list are grouped into their own |
5085 | partial symtabs. We combine several TUs per psymtab to not let the size | |
5086 | of any one psymtab grow too big. */ | |
5087 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB (1 << 31) | |
5088 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE 10 | |
dee91e82 | 5089 | |
094b34ac | 5090 | /* Helper routine for get_type_unit_group. |
f4dc4d17 DE |
5091 | Create the type_unit_group object used to hold one or more TUs. */ |
5092 | ||
5093 | static struct type_unit_group * | |
094b34ac | 5094 | create_type_unit_group (struct dwarf2_cu *cu, sect_offset line_offset_struct) |
f4dc4d17 DE |
5095 | { |
5096 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
094b34ac | 5097 | struct dwarf2_per_cu_data *per_cu; |
f4dc4d17 | 5098 | struct type_unit_group *tu_group; |
f4dc4d17 DE |
5099 | |
5100 | tu_group = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
5101 | struct type_unit_group); | |
094b34ac | 5102 | per_cu = &tu_group->per_cu; |
f4dc4d17 DE |
5103 | per_cu->objfile = objfile; |
5104 | per_cu->is_debug_types = 1; | |
796a7ff8 | 5105 | per_cu->type_unit_group = tu_group; |
f4dc4d17 | 5106 | |
094b34ac DE |
5107 | if (dwarf2_per_objfile->using_index) |
5108 | { | |
5109 | per_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
5110 | struct dwarf2_per_cu_quick_data); | |
5111 | tu_group->t.first_tu = cu->per_cu; | |
5112 | } | |
5113 | else | |
5114 | { | |
5115 | unsigned int line_offset = line_offset_struct.sect_off; | |
5116 | struct partial_symtab *pst; | |
5117 | char *name; | |
5118 | ||
5119 | /* Give the symtab a useful name for debug purposes. */ | |
5120 | if ((line_offset & NO_STMT_LIST_TYPE_UNIT_PSYMTAB) != 0) | |
5121 | name = xstrprintf ("<type_units_%d>", | |
5122 | (line_offset & ~NO_STMT_LIST_TYPE_UNIT_PSYMTAB)); | |
5123 | else | |
5124 | name = xstrprintf ("<type_units_at_0x%x>", line_offset); | |
5125 | ||
5126 | pst = create_partial_symtab (per_cu, name); | |
5127 | pst->anonymous = 1; | |
f4dc4d17 | 5128 | |
094b34ac DE |
5129 | xfree (name); |
5130 | } | |
f4dc4d17 | 5131 | |
094b34ac DE |
5132 | tu_group->hash.dwo_unit = cu->dwo_unit; |
5133 | tu_group->hash.line_offset = line_offset_struct; | |
f4dc4d17 DE |
5134 | |
5135 | return tu_group; | |
5136 | } | |
5137 | ||
094b34ac DE |
5138 | /* Look up the type_unit_group for type unit CU, and create it if necessary. |
5139 | STMT_LIST is a DW_AT_stmt_list attribute. */ | |
f4dc4d17 DE |
5140 | |
5141 | static struct type_unit_group * | |
094b34ac | 5142 | get_type_unit_group (struct dwarf2_cu *cu, struct attribute *stmt_list) |
f4dc4d17 DE |
5143 | { |
5144 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; | |
5145 | struct type_unit_group *tu_group; | |
5146 | void **slot; | |
5147 | unsigned int line_offset; | |
5148 | struct type_unit_group type_unit_group_for_lookup; | |
5149 | ||
5150 | if (dwarf2_per_objfile->type_unit_groups == NULL) | |
5151 | { | |
5152 | dwarf2_per_objfile->type_unit_groups = | |
5153 | allocate_type_unit_groups_table (); | |
5154 | } | |
5155 | ||
5156 | /* Do we need to create a new group, or can we use an existing one? */ | |
5157 | ||
5158 | if (stmt_list) | |
5159 | { | |
5160 | line_offset = DW_UNSND (stmt_list); | |
5161 | ++tu_stats->nr_symtab_sharers; | |
5162 | } | |
5163 | else | |
5164 | { | |
5165 | /* Ugh, no stmt_list. Rare, but we have to handle it. | |
5166 | We can do various things here like create one group per TU or | |
5167 | spread them over multiple groups to split up the expansion work. | |
5168 | To avoid worst case scenarios (too many groups or too large groups) | |
5169 | we, umm, group them in bunches. */ | |
5170 | line_offset = (NO_STMT_LIST_TYPE_UNIT_PSYMTAB | |
5171 | | (tu_stats->nr_stmt_less_type_units | |
5172 | / NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE)); | |
5173 | ++tu_stats->nr_stmt_less_type_units; | |
5174 | } | |
5175 | ||
094b34ac DE |
5176 | type_unit_group_for_lookup.hash.dwo_unit = cu->dwo_unit; |
5177 | type_unit_group_for_lookup.hash.line_offset.sect_off = line_offset; | |
f4dc4d17 DE |
5178 | slot = htab_find_slot (dwarf2_per_objfile->type_unit_groups, |
5179 | &type_unit_group_for_lookup, INSERT); | |
5180 | if (*slot != NULL) | |
5181 | { | |
5182 | tu_group = *slot; | |
5183 | gdb_assert (tu_group != NULL); | |
5184 | } | |
5185 | else | |
5186 | { | |
5187 | sect_offset line_offset_struct; | |
5188 | ||
5189 | line_offset_struct.sect_off = line_offset; | |
094b34ac | 5190 | tu_group = create_type_unit_group (cu, line_offset_struct); |
f4dc4d17 DE |
5191 | *slot = tu_group; |
5192 | ++tu_stats->nr_symtabs; | |
5193 | } | |
5194 | ||
5195 | return tu_group; | |
5196 | } | |
5197 | ||
5198 | /* Struct used to sort TUs by their abbreviation table offset. */ | |
5199 | ||
5200 | struct tu_abbrev_offset | |
5201 | { | |
5202 | struct signatured_type *sig_type; | |
5203 | sect_offset abbrev_offset; | |
5204 | }; | |
5205 | ||
5206 | /* Helper routine for build_type_unit_groups, passed to qsort. */ | |
5207 | ||
5208 | static int | |
5209 | sort_tu_by_abbrev_offset (const void *ap, const void *bp) | |
5210 | { | |
5211 | const struct tu_abbrev_offset * const *a = ap; | |
5212 | const struct tu_abbrev_offset * const *b = bp; | |
5213 | unsigned int aoff = (*a)->abbrev_offset.sect_off; | |
5214 | unsigned int boff = (*b)->abbrev_offset.sect_off; | |
5215 | ||
5216 | return (aoff > boff) - (aoff < boff); | |
5217 | } | |
5218 | ||
5219 | /* A helper function to add a type_unit_group to a table. */ | |
5220 | ||
5221 | static int | |
5222 | add_type_unit_group_to_table (void **slot, void *datum) | |
5223 | { | |
5224 | struct type_unit_group *tu_group = *slot; | |
5225 | struct type_unit_group ***datap = datum; | |
5226 | ||
5227 | **datap = tu_group; | |
5228 | ++*datap; | |
5229 | ||
5230 | return 1; | |
5231 | } | |
5232 | ||
5233 | /* Efficiently read all the type units, calling init_cutu_and_read_dies on | |
5234 | each one passing FUNC,DATA. | |
5235 | ||
5236 | The efficiency is because we sort TUs by the abbrev table they use and | |
5237 | only read each abbrev table once. In one program there are 200K TUs | |
5238 | sharing 8K abbrev tables. | |
5239 | ||
5240 | The main purpose of this function is to support building the | |
5241 | dwarf2_per_objfile->type_unit_groups table. | |
5242 | TUs typically share the DW_AT_stmt_list of the CU they came from, so we | |
5243 | can collapse the search space by grouping them by stmt_list. | |
5244 | The savings can be significant, in the same program from above the 200K TUs | |
5245 | share 8K stmt_list tables. | |
5246 | ||
5247 | FUNC is expected to call get_type_unit_group, which will create the | |
5248 | struct type_unit_group if necessary and add it to | |
5249 | dwarf2_per_objfile->type_unit_groups. */ | |
5250 | ||
5251 | static void | |
5252 | build_type_unit_groups (die_reader_func_ftype *func, void *data) | |
5253 | { | |
5254 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
5255 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; | |
5256 | struct cleanup *cleanups; | |
5257 | struct abbrev_table *abbrev_table; | |
5258 | sect_offset abbrev_offset; | |
5259 | struct tu_abbrev_offset *sorted_by_abbrev; | |
5260 | struct type_unit_group **iter; | |
5261 | int i; | |
5262 | ||
5263 | /* It's up to the caller to not call us multiple times. */ | |
5264 | gdb_assert (dwarf2_per_objfile->type_unit_groups == NULL); | |
5265 | ||
5266 | if (dwarf2_per_objfile->n_type_units == 0) | |
5267 | return; | |
5268 | ||
5269 | /* TUs typically share abbrev tables, and there can be way more TUs than | |
5270 | abbrev tables. Sort by abbrev table to reduce the number of times we | |
5271 | read each abbrev table in. | |
5272 | Alternatives are to punt or to maintain a cache of abbrev tables. | |
5273 | This is simpler and efficient enough for now. | |
5274 | ||
5275 | Later we group TUs by their DW_AT_stmt_list value (as this defines the | |
5276 | symtab to use). Typically TUs with the same abbrev offset have the same | |
5277 | stmt_list value too so in practice this should work well. | |
5278 | ||
5279 | The basic algorithm here is: | |
5280 | ||
5281 | sort TUs by abbrev table | |
5282 | for each TU with same abbrev table: | |
5283 | read abbrev table if first user | |
5284 | read TU top level DIE | |
5285 | [IWBN if DWO skeletons had DW_AT_stmt_list] | |
5286 | call FUNC */ | |
5287 | ||
5288 | if (dwarf2_read_debug) | |
5289 | fprintf_unfiltered (gdb_stdlog, "Building type unit groups ...\n"); | |
5290 | ||
5291 | /* Sort in a separate table to maintain the order of all_type_units | |
5292 | for .gdb_index: TU indices directly index all_type_units. */ | |
5293 | sorted_by_abbrev = XNEWVEC (struct tu_abbrev_offset, | |
5294 | dwarf2_per_objfile->n_type_units); | |
5295 | for (i = 0; i < dwarf2_per_objfile->n_type_units; ++i) | |
5296 | { | |
5297 | struct signatured_type *sig_type = dwarf2_per_objfile->all_type_units[i]; | |
5298 | ||
5299 | sorted_by_abbrev[i].sig_type = sig_type; | |
5300 | sorted_by_abbrev[i].abbrev_offset = | |
5301 | read_abbrev_offset (sig_type->per_cu.info_or_types_section, | |
5302 | sig_type->per_cu.offset); | |
5303 | } | |
5304 | cleanups = make_cleanup (xfree, sorted_by_abbrev); | |
5305 | qsort (sorted_by_abbrev, dwarf2_per_objfile->n_type_units, | |
5306 | sizeof (struct tu_abbrev_offset), sort_tu_by_abbrev_offset); | |
5307 | ||
094b34ac DE |
5308 | /* Note: In the .gdb_index case, get_type_unit_group may have already been |
5309 | called any number of times, so we don't reset tu_stats here. */ | |
5310 | ||
f4dc4d17 DE |
5311 | abbrev_offset.sect_off = ~(unsigned) 0; |
5312 | abbrev_table = NULL; | |
5313 | make_cleanup (abbrev_table_free_cleanup, &abbrev_table); | |
5314 | ||
5315 | for (i = 0; i < dwarf2_per_objfile->n_type_units; ++i) | |
5316 | { | |
5317 | const struct tu_abbrev_offset *tu = &sorted_by_abbrev[i]; | |
5318 | ||
5319 | /* Switch to the next abbrev table if necessary. */ | |
5320 | if (abbrev_table == NULL | |
5321 | || tu->abbrev_offset.sect_off != abbrev_offset.sect_off) | |
5322 | { | |
5323 | if (abbrev_table != NULL) | |
5324 | { | |
5325 | abbrev_table_free (abbrev_table); | |
5326 | /* Reset to NULL in case abbrev_table_read_table throws | |
5327 | an error: abbrev_table_free_cleanup will get called. */ | |
5328 | abbrev_table = NULL; | |
5329 | } | |
5330 | abbrev_offset = tu->abbrev_offset; | |
5331 | abbrev_table = | |
5332 | abbrev_table_read_table (&dwarf2_per_objfile->abbrev, | |
5333 | abbrev_offset); | |
5334 | ++tu_stats->nr_uniq_abbrev_tables; | |
5335 | } | |
5336 | ||
5337 | init_cutu_and_read_dies (&tu->sig_type->per_cu, abbrev_table, 0, 0, | |
5338 | func, data); | |
5339 | } | |
5340 | ||
5341 | /* Create a vector of pointers to primary type units to make it easy to | |
5342 | iterate over them and CUs. See dw2_get_primary_cu. */ | |
5343 | dwarf2_per_objfile->n_type_unit_groups = | |
5344 | htab_elements (dwarf2_per_objfile->type_unit_groups); | |
5345 | dwarf2_per_objfile->all_type_unit_groups = | |
5346 | obstack_alloc (&objfile->objfile_obstack, | |
5347 | dwarf2_per_objfile->n_type_unit_groups | |
5348 | * sizeof (struct type_unit_group *)); | |
5349 | iter = &dwarf2_per_objfile->all_type_unit_groups[0]; | |
5350 | htab_traverse_noresize (dwarf2_per_objfile->type_unit_groups, | |
5351 | add_type_unit_group_to_table, &iter); | |
5352 | gdb_assert (iter - &dwarf2_per_objfile->all_type_unit_groups[0] | |
5353 | == dwarf2_per_objfile->n_type_unit_groups); | |
5354 | ||
5355 | do_cleanups (cleanups); | |
5356 | ||
5357 | if (dwarf2_read_debug) | |
5358 | { | |
5359 | fprintf_unfiltered (gdb_stdlog, "Done building type unit groups:\n"); | |
5360 | fprintf_unfiltered (gdb_stdlog, " %d TUs\n", | |
5361 | dwarf2_per_objfile->n_type_units); | |
5362 | fprintf_unfiltered (gdb_stdlog, " %d uniq abbrev tables\n", | |
5363 | tu_stats->nr_uniq_abbrev_tables); | |
5364 | fprintf_unfiltered (gdb_stdlog, " %d symtabs from stmt_list entries\n", | |
5365 | tu_stats->nr_symtabs); | |
5366 | fprintf_unfiltered (gdb_stdlog, " %d symtab sharers\n", | |
5367 | tu_stats->nr_symtab_sharers); | |
5368 | fprintf_unfiltered (gdb_stdlog, " %d type units without a stmt_list\n", | |
5369 | tu_stats->nr_stmt_less_type_units); | |
5370 | } | |
5371 | } | |
5372 | ||
5373 | /* Reader function for build_type_psymtabs. */ | |
5374 | ||
5375 | static void | |
5376 | build_type_psymtabs_reader (const struct die_reader_specs *reader, | |
5377 | gdb_byte *info_ptr, | |
5378 | struct die_info *type_unit_die, | |
5379 | int has_children, | |
5380 | void *data) | |
5381 | { | |
5382 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
5383 | struct dwarf2_cu *cu = reader->cu; | |
5384 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; | |
5385 | struct type_unit_group *tu_group; | |
5386 | struct attribute *attr; | |
5387 | struct partial_die_info *first_die; | |
5388 | CORE_ADDR lowpc, highpc; | |
5389 | struct partial_symtab *pst; | |
5390 | ||
5391 | gdb_assert (data == NULL); | |
5392 | ||
5393 | if (! has_children) | |
5394 | return; | |
5395 | ||
5396 | attr = dwarf2_attr_no_follow (type_unit_die, DW_AT_stmt_list); | |
094b34ac | 5397 | tu_group = get_type_unit_group (cu, attr); |
f4dc4d17 | 5398 | |
094b34ac | 5399 | VEC_safe_push (dwarf2_per_cu_ptr, tu_group->t.tus, per_cu); |
f4dc4d17 DE |
5400 | |
5401 | prepare_one_comp_unit (cu, type_unit_die, language_minimal); | |
5402 | cu->list_in_scope = &file_symbols; | |
5403 | pst = create_partial_symtab (per_cu, ""); | |
5404 | pst->anonymous = 1; | |
5405 | ||
5406 | first_die = load_partial_dies (reader, info_ptr, 1); | |
5407 | ||
5408 | lowpc = (CORE_ADDR) -1; | |
5409 | highpc = (CORE_ADDR) 0; | |
5410 | scan_partial_symbols (first_die, &lowpc, &highpc, 0, cu); | |
5411 | ||
5412 | pst->n_global_syms = objfile->global_psymbols.next - | |
5413 | (objfile->global_psymbols.list + pst->globals_offset); | |
5414 | pst->n_static_syms = objfile->static_psymbols.next - | |
5415 | (objfile->static_psymbols.list + pst->statics_offset); | |
5c80ed9d | 5416 | sort_pst_symbols (objfile, pst); |
f4dc4d17 DE |
5417 | } |
5418 | ||
5419 | /* Traversal function for build_type_psymtabs. */ | |
5420 | ||
5421 | static int | |
5422 | build_type_psymtab_dependencies (void **slot, void *info) | |
5423 | { | |
5424 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
5425 | struct type_unit_group *tu_group = (struct type_unit_group *) *slot; | |
094b34ac | 5426 | struct dwarf2_per_cu_data *per_cu = &tu_group->per_cu; |
f4dc4d17 | 5427 | struct partial_symtab *pst = per_cu->v.psymtab; |
094b34ac | 5428 | int len = VEC_length (dwarf2_per_cu_ptr, tu_group->t.tus); |
f4dc4d17 DE |
5429 | struct dwarf2_per_cu_data *iter; |
5430 | int i; | |
5431 | ||
5432 | gdb_assert (len > 0); | |
5433 | ||
5434 | pst->number_of_dependencies = len; | |
5435 | pst->dependencies = obstack_alloc (&objfile->objfile_obstack, | |
5436 | len * sizeof (struct psymtab *)); | |
5437 | for (i = 0; | |
094b34ac | 5438 | VEC_iterate (dwarf2_per_cu_ptr, tu_group->t.tus, i, iter); |
f4dc4d17 DE |
5439 | ++i) |
5440 | { | |
5441 | pst->dependencies[i] = iter->v.psymtab; | |
796a7ff8 | 5442 | iter->type_unit_group = tu_group; |
f4dc4d17 DE |
5443 | } |
5444 | ||
094b34ac | 5445 | VEC_free (dwarf2_per_cu_ptr, tu_group->t.tus); |
348e048f DE |
5446 | |
5447 | return 1; | |
5448 | } | |
5449 | ||
5450 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
5451 | Build partial symbol tables for the .debug_types comp-units. */ | |
5452 | ||
5453 | static void | |
5454 | build_type_psymtabs (struct objfile *objfile) | |
5455 | { | |
0e50663e | 5456 | if (! create_all_type_units (objfile)) |
348e048f DE |
5457 | return; |
5458 | ||
f4dc4d17 DE |
5459 | build_type_unit_groups (build_type_psymtabs_reader, NULL); |
5460 | ||
5461 | /* Now that all TUs have been processed we can fill in the dependencies. */ | |
5462 | htab_traverse_noresize (dwarf2_per_objfile->type_unit_groups, | |
5463 | build_type_psymtab_dependencies, NULL); | |
348e048f DE |
5464 | } |
5465 | ||
60606b2c TT |
5466 | /* A cleanup function that clears objfile's psymtabs_addrmap field. */ |
5467 | ||
5468 | static void | |
5469 | psymtabs_addrmap_cleanup (void *o) | |
5470 | { | |
5471 | struct objfile *objfile = o; | |
ec61707d | 5472 | |
60606b2c TT |
5473 | objfile->psymtabs_addrmap = NULL; |
5474 | } | |
5475 | ||
95554aad TT |
5476 | /* Compute the 'user' field for each psymtab in OBJFILE. */ |
5477 | ||
5478 | static void | |
5479 | set_partial_user (struct objfile *objfile) | |
5480 | { | |
5481 | int i; | |
5482 | ||
5483 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) | |
5484 | { | |
5485 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); | |
5486 | struct partial_symtab *pst = per_cu->v.psymtab; | |
5487 | int j; | |
5488 | ||
36586728 TT |
5489 | if (pst == NULL) |
5490 | continue; | |
5491 | ||
95554aad TT |
5492 | for (j = 0; j < pst->number_of_dependencies; ++j) |
5493 | { | |
5494 | /* Set the 'user' field only if it is not already set. */ | |
5495 | if (pst->dependencies[j]->user == NULL) | |
5496 | pst->dependencies[j]->user = pst; | |
5497 | } | |
5498 | } | |
5499 | } | |
5500 | ||
93311388 DE |
5501 | /* Build the partial symbol table by doing a quick pass through the |
5502 | .debug_info and .debug_abbrev sections. */ | |
72bf9492 | 5503 | |
93311388 | 5504 | static void |
c67a9c90 | 5505 | dwarf2_build_psymtabs_hard (struct objfile *objfile) |
93311388 | 5506 | { |
60606b2c TT |
5507 | struct cleanup *back_to, *addrmap_cleanup; |
5508 | struct obstack temp_obstack; | |
21b2bd31 | 5509 | int i; |
93311388 | 5510 | |
45cfd468 DE |
5511 | if (dwarf2_read_debug) |
5512 | { | |
5513 | fprintf_unfiltered (gdb_stdlog, "Building psymtabs of objfile %s ...\n", | |
5514 | objfile->name); | |
5515 | } | |
5516 | ||
98bfdba5 PA |
5517 | dwarf2_per_objfile->reading_partial_symbols = 1; |
5518 | ||
be391dca | 5519 | dwarf2_read_section (objfile, &dwarf2_per_objfile->info); |
91c24f0a | 5520 | |
93311388 DE |
5521 | /* Any cached compilation units will be linked by the per-objfile |
5522 | read_in_chain. Make sure to free them when we're done. */ | |
5523 | back_to = make_cleanup (free_cached_comp_units, NULL); | |
72bf9492 | 5524 | |
348e048f DE |
5525 | build_type_psymtabs (objfile); |
5526 | ||
93311388 | 5527 | create_all_comp_units (objfile); |
c906108c | 5528 | |
60606b2c TT |
5529 | /* Create a temporary address map on a temporary obstack. We later |
5530 | copy this to the final obstack. */ | |
5531 | obstack_init (&temp_obstack); | |
5532 | make_cleanup_obstack_free (&temp_obstack); | |
5533 | objfile->psymtabs_addrmap = addrmap_create_mutable (&temp_obstack); | |
5534 | addrmap_cleanup = make_cleanup (psymtabs_addrmap_cleanup, objfile); | |
72bf9492 | 5535 | |
21b2bd31 | 5536 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
93311388 | 5537 | { |
21b2bd31 | 5538 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
aaa75496 | 5539 | |
95554aad | 5540 | process_psymtab_comp_unit (per_cu, 0); |
c906108c | 5541 | } |
ff013f42 | 5542 | |
95554aad TT |
5543 | set_partial_user (objfile); |
5544 | ||
ff013f42 JK |
5545 | objfile->psymtabs_addrmap = addrmap_create_fixed (objfile->psymtabs_addrmap, |
5546 | &objfile->objfile_obstack); | |
60606b2c | 5547 | discard_cleanups (addrmap_cleanup); |
ff013f42 | 5548 | |
ae038cb0 | 5549 | do_cleanups (back_to); |
45cfd468 DE |
5550 | |
5551 | if (dwarf2_read_debug) | |
5552 | fprintf_unfiltered (gdb_stdlog, "Done building psymtabs of %s\n", | |
5553 | objfile->name); | |
ae038cb0 DJ |
5554 | } |
5555 | ||
3019eac3 | 5556 | /* die_reader_func for load_partial_comp_unit. */ |
ae038cb0 DJ |
5557 | |
5558 | static void | |
dee91e82 DE |
5559 | load_partial_comp_unit_reader (const struct die_reader_specs *reader, |
5560 | gdb_byte *info_ptr, | |
5561 | struct die_info *comp_unit_die, | |
5562 | int has_children, | |
5563 | void *data) | |
ae038cb0 | 5564 | { |
dee91e82 | 5565 | struct dwarf2_cu *cu = reader->cu; |
ae038cb0 | 5566 | |
95554aad | 5567 | prepare_one_comp_unit (cu, comp_unit_die, language_minimal); |
ae038cb0 | 5568 | |
ae038cb0 DJ |
5569 | /* Check if comp unit has_children. |
5570 | If so, read the rest of the partial symbols from this comp unit. | |
0963b4bd | 5571 | If not, there's no more debug_info for this comp unit. */ |
d85a05f0 | 5572 | if (has_children) |
dee91e82 DE |
5573 | load_partial_dies (reader, info_ptr, 0); |
5574 | } | |
98bfdba5 | 5575 | |
dee91e82 DE |
5576 | /* Load the partial DIEs for a secondary CU into memory. |
5577 | This is also used when rereading a primary CU with load_all_dies. */ | |
c5b7e1cb | 5578 | |
dee91e82 DE |
5579 | static void |
5580 | load_partial_comp_unit (struct dwarf2_per_cu_data *this_cu) | |
5581 | { | |
f4dc4d17 DE |
5582 | init_cutu_and_read_dies (this_cu, NULL, 1, 1, |
5583 | load_partial_comp_unit_reader, NULL); | |
ae038cb0 DJ |
5584 | } |
5585 | ||
ae038cb0 | 5586 | static void |
36586728 TT |
5587 | read_comp_units_from_section (struct objfile *objfile, |
5588 | struct dwarf2_section_info *section, | |
5589 | unsigned int is_dwz, | |
5590 | int *n_allocated, | |
5591 | int *n_comp_units, | |
5592 | struct dwarf2_per_cu_data ***all_comp_units) | |
ae038cb0 | 5593 | { |
be391dca | 5594 | gdb_byte *info_ptr; |
36586728 | 5595 | bfd *abfd = section->asection->owner; |
be391dca | 5596 | |
36586728 | 5597 | dwarf2_read_section (objfile, section); |
ae038cb0 | 5598 | |
36586728 | 5599 | info_ptr = section->buffer; |
6e70227d | 5600 | |
36586728 | 5601 | while (info_ptr < section->buffer + section->size) |
ae038cb0 | 5602 | { |
c764a876 | 5603 | unsigned int length, initial_length_size; |
ae038cb0 | 5604 | struct dwarf2_per_cu_data *this_cu; |
b64f50a1 | 5605 | sect_offset offset; |
ae038cb0 | 5606 | |
36586728 | 5607 | offset.sect_off = info_ptr - section->buffer; |
ae038cb0 DJ |
5608 | |
5609 | /* Read just enough information to find out where the next | |
5610 | compilation unit is. */ | |
36586728 | 5611 | length = read_initial_length (abfd, info_ptr, &initial_length_size); |
ae038cb0 DJ |
5612 | |
5613 | /* Save the compilation unit for later lookup. */ | |
5614 | this_cu = obstack_alloc (&objfile->objfile_obstack, | |
5615 | sizeof (struct dwarf2_per_cu_data)); | |
5616 | memset (this_cu, 0, sizeof (*this_cu)); | |
5617 | this_cu->offset = offset; | |
c764a876 | 5618 | this_cu->length = length + initial_length_size; |
36586728 | 5619 | this_cu->is_dwz = is_dwz; |
9291a0cd | 5620 | this_cu->objfile = objfile; |
36586728 | 5621 | this_cu->info_or_types_section = section; |
ae038cb0 | 5622 | |
36586728 | 5623 | if (*n_comp_units == *n_allocated) |
ae038cb0 | 5624 | { |
36586728 TT |
5625 | *n_allocated *= 2; |
5626 | *all_comp_units = xrealloc (*all_comp_units, | |
5627 | *n_allocated | |
5628 | * sizeof (struct dwarf2_per_cu_data *)); | |
ae038cb0 | 5629 | } |
36586728 TT |
5630 | (*all_comp_units)[*n_comp_units] = this_cu; |
5631 | ++*n_comp_units; | |
ae038cb0 DJ |
5632 | |
5633 | info_ptr = info_ptr + this_cu->length; | |
5634 | } | |
36586728 TT |
5635 | } |
5636 | ||
5637 | /* Create a list of all compilation units in OBJFILE. | |
5638 | This is only done for -readnow and building partial symtabs. */ | |
5639 | ||
5640 | static void | |
5641 | create_all_comp_units (struct objfile *objfile) | |
5642 | { | |
5643 | int n_allocated; | |
5644 | int n_comp_units; | |
5645 | struct dwarf2_per_cu_data **all_comp_units; | |
5646 | ||
5647 | n_comp_units = 0; | |
5648 | n_allocated = 10; | |
5649 | all_comp_units = xmalloc (n_allocated | |
5650 | * sizeof (struct dwarf2_per_cu_data *)); | |
5651 | ||
5652 | read_comp_units_from_section (objfile, &dwarf2_per_objfile->info, 0, | |
5653 | &n_allocated, &n_comp_units, &all_comp_units); | |
5654 | ||
5655 | if (bfd_get_section_by_name (objfile->obfd, ".gnu_debugaltlink") != NULL) | |
5656 | { | |
5657 | struct dwz_file *dwz = dwarf2_get_dwz_file (); | |
5658 | ||
5659 | read_comp_units_from_section (objfile, &dwz->info, 1, | |
5660 | &n_allocated, &n_comp_units, | |
5661 | &all_comp_units); | |
5662 | } | |
ae038cb0 DJ |
5663 | |
5664 | dwarf2_per_objfile->all_comp_units | |
5665 | = obstack_alloc (&objfile->objfile_obstack, | |
5666 | n_comp_units * sizeof (struct dwarf2_per_cu_data *)); | |
5667 | memcpy (dwarf2_per_objfile->all_comp_units, all_comp_units, | |
5668 | n_comp_units * sizeof (struct dwarf2_per_cu_data *)); | |
5669 | xfree (all_comp_units); | |
5670 | dwarf2_per_objfile->n_comp_units = n_comp_units; | |
c906108c SS |
5671 | } |
5672 | ||
5734ee8b DJ |
5673 | /* Process all loaded DIEs for compilation unit CU, starting at |
5674 | FIRST_DIE. The caller should pass NEED_PC == 1 if the compilation | |
5675 | unit DIE did not have PC info (DW_AT_low_pc and DW_AT_high_pc, or | |
5676 | DW_AT_ranges). If NEED_PC is set, then this function will set | |
5677 | *LOWPC and *HIGHPC to the lowest and highest PC values found in CU | |
5678 | and record the covered ranges in the addrmap. */ | |
c906108c | 5679 | |
72bf9492 DJ |
5680 | static void |
5681 | scan_partial_symbols (struct partial_die_info *first_die, CORE_ADDR *lowpc, | |
5734ee8b | 5682 | CORE_ADDR *highpc, int need_pc, struct dwarf2_cu *cu) |
c906108c | 5683 | { |
72bf9492 | 5684 | struct partial_die_info *pdi; |
c906108c | 5685 | |
91c24f0a DC |
5686 | /* Now, march along the PDI's, descending into ones which have |
5687 | interesting children but skipping the children of the other ones, | |
5688 | until we reach the end of the compilation unit. */ | |
c906108c | 5689 | |
72bf9492 | 5690 | pdi = first_die; |
91c24f0a | 5691 | |
72bf9492 DJ |
5692 | while (pdi != NULL) |
5693 | { | |
5694 | fixup_partial_die (pdi, cu); | |
c906108c | 5695 | |
f55ee35c | 5696 | /* Anonymous namespaces or modules have no name but have interesting |
91c24f0a DC |
5697 | children, so we need to look at them. Ditto for anonymous |
5698 | enums. */ | |
933c6fe4 | 5699 | |
72bf9492 | 5700 | if (pdi->name != NULL || pdi->tag == DW_TAG_namespace |
95554aad TT |
5701 | || pdi->tag == DW_TAG_module || pdi->tag == DW_TAG_enumeration_type |
5702 | || pdi->tag == DW_TAG_imported_unit) | |
c906108c | 5703 | { |
72bf9492 | 5704 | switch (pdi->tag) |
c906108c SS |
5705 | { |
5706 | case DW_TAG_subprogram: | |
5734ee8b | 5707 | add_partial_subprogram (pdi, lowpc, highpc, need_pc, cu); |
c906108c | 5708 | break; |
72929c62 | 5709 | case DW_TAG_constant: |
c906108c SS |
5710 | case DW_TAG_variable: |
5711 | case DW_TAG_typedef: | |
91c24f0a | 5712 | case DW_TAG_union_type: |
72bf9492 | 5713 | if (!pdi->is_declaration) |
63d06c5c | 5714 | { |
72bf9492 | 5715 | add_partial_symbol (pdi, cu); |
63d06c5c DC |
5716 | } |
5717 | break; | |
c906108c | 5718 | case DW_TAG_class_type: |
680b30c7 | 5719 | case DW_TAG_interface_type: |
c906108c | 5720 | case DW_TAG_structure_type: |
72bf9492 | 5721 | if (!pdi->is_declaration) |
c906108c | 5722 | { |
72bf9492 | 5723 | add_partial_symbol (pdi, cu); |
c906108c SS |
5724 | } |
5725 | break; | |
91c24f0a | 5726 | case DW_TAG_enumeration_type: |
72bf9492 DJ |
5727 | if (!pdi->is_declaration) |
5728 | add_partial_enumeration (pdi, cu); | |
c906108c SS |
5729 | break; |
5730 | case DW_TAG_base_type: | |
a02abb62 | 5731 | case DW_TAG_subrange_type: |
c906108c | 5732 | /* File scope base type definitions are added to the partial |
c5aa993b | 5733 | symbol table. */ |
72bf9492 | 5734 | add_partial_symbol (pdi, cu); |
c906108c | 5735 | break; |
d9fa45fe | 5736 | case DW_TAG_namespace: |
5734ee8b | 5737 | add_partial_namespace (pdi, lowpc, highpc, need_pc, cu); |
91c24f0a | 5738 | break; |
5d7cb8df JK |
5739 | case DW_TAG_module: |
5740 | add_partial_module (pdi, lowpc, highpc, need_pc, cu); | |
5741 | break; | |
95554aad TT |
5742 | case DW_TAG_imported_unit: |
5743 | { | |
5744 | struct dwarf2_per_cu_data *per_cu; | |
5745 | ||
f4dc4d17 DE |
5746 | /* For now we don't handle imported units in type units. */ |
5747 | if (cu->per_cu->is_debug_types) | |
5748 | { | |
5749 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
5750 | " supported in type units [in module %s]"), | |
5751 | cu->objfile->name); | |
5752 | } | |
5753 | ||
95554aad | 5754 | per_cu = dwarf2_find_containing_comp_unit (pdi->d.offset, |
36586728 | 5755 | pdi->is_dwz, |
95554aad TT |
5756 | cu->objfile); |
5757 | ||
5758 | /* Go read the partial unit, if needed. */ | |
5759 | if (per_cu->v.psymtab == NULL) | |
5760 | process_psymtab_comp_unit (per_cu, 1); | |
5761 | ||
f4dc4d17 | 5762 | VEC_safe_push (dwarf2_per_cu_ptr, |
796a7ff8 | 5763 | cu->per_cu->imported_symtabs, per_cu); |
95554aad TT |
5764 | } |
5765 | break; | |
c906108c SS |
5766 | default: |
5767 | break; | |
5768 | } | |
5769 | } | |
5770 | ||
72bf9492 DJ |
5771 | /* If the die has a sibling, skip to the sibling. */ |
5772 | ||
5773 | pdi = pdi->die_sibling; | |
5774 | } | |
5775 | } | |
5776 | ||
5777 | /* Functions used to compute the fully scoped name of a partial DIE. | |
91c24f0a | 5778 | |
72bf9492 | 5779 | Normally, this is simple. For C++, the parent DIE's fully scoped |
987504bb JJ |
5780 | name is concatenated with "::" and the partial DIE's name. For |
5781 | Java, the same thing occurs except that "." is used instead of "::". | |
72bf9492 DJ |
5782 | Enumerators are an exception; they use the scope of their parent |
5783 | enumeration type, i.e. the name of the enumeration type is not | |
5784 | prepended to the enumerator. | |
91c24f0a | 5785 | |
72bf9492 DJ |
5786 | There are two complexities. One is DW_AT_specification; in this |
5787 | case "parent" means the parent of the target of the specification, | |
5788 | instead of the direct parent of the DIE. The other is compilers | |
5789 | which do not emit DW_TAG_namespace; in this case we try to guess | |
5790 | the fully qualified name of structure types from their members' | |
5791 | linkage names. This must be done using the DIE's children rather | |
5792 | than the children of any DW_AT_specification target. We only need | |
5793 | to do this for structures at the top level, i.e. if the target of | |
5794 | any DW_AT_specification (if any; otherwise the DIE itself) does not | |
5795 | have a parent. */ | |
5796 | ||
5797 | /* Compute the scope prefix associated with PDI's parent, in | |
5798 | compilation unit CU. The result will be allocated on CU's | |
5799 | comp_unit_obstack, or a copy of the already allocated PDI->NAME | |
5800 | field. NULL is returned if no prefix is necessary. */ | |
15d034d0 | 5801 | static const char * |
72bf9492 DJ |
5802 | partial_die_parent_scope (struct partial_die_info *pdi, |
5803 | struct dwarf2_cu *cu) | |
5804 | { | |
15d034d0 | 5805 | const char *grandparent_scope; |
72bf9492 | 5806 | struct partial_die_info *parent, *real_pdi; |
91c24f0a | 5807 | |
72bf9492 DJ |
5808 | /* We need to look at our parent DIE; if we have a DW_AT_specification, |
5809 | then this means the parent of the specification DIE. */ | |
5810 | ||
5811 | real_pdi = pdi; | |
72bf9492 | 5812 | while (real_pdi->has_specification) |
36586728 TT |
5813 | real_pdi = find_partial_die (real_pdi->spec_offset, |
5814 | real_pdi->spec_is_dwz, cu); | |
72bf9492 DJ |
5815 | |
5816 | parent = real_pdi->die_parent; | |
5817 | if (parent == NULL) | |
5818 | return NULL; | |
5819 | ||
5820 | if (parent->scope_set) | |
5821 | return parent->scope; | |
5822 | ||
5823 | fixup_partial_die (parent, cu); | |
5824 | ||
10b3939b | 5825 | grandparent_scope = partial_die_parent_scope (parent, cu); |
72bf9492 | 5826 | |
acebe513 UW |
5827 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
5828 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
5829 | Work around this problem here. */ | |
5830 | if (cu->language == language_cplus | |
6e70227d | 5831 | && parent->tag == DW_TAG_namespace |
acebe513 UW |
5832 | && strcmp (parent->name, "::") == 0 |
5833 | && grandparent_scope == NULL) | |
5834 | { | |
5835 | parent->scope = NULL; | |
5836 | parent->scope_set = 1; | |
5837 | return NULL; | |
5838 | } | |
5839 | ||
9c6c53f7 SA |
5840 | if (pdi->tag == DW_TAG_enumerator) |
5841 | /* Enumerators should not get the name of the enumeration as a prefix. */ | |
5842 | parent->scope = grandparent_scope; | |
5843 | else if (parent->tag == DW_TAG_namespace | |
f55ee35c | 5844 | || parent->tag == DW_TAG_module |
72bf9492 DJ |
5845 | || parent->tag == DW_TAG_structure_type |
5846 | || parent->tag == DW_TAG_class_type | |
680b30c7 | 5847 | || parent->tag == DW_TAG_interface_type |
ceeb3d5a TT |
5848 | || parent->tag == DW_TAG_union_type |
5849 | || parent->tag == DW_TAG_enumeration_type) | |
72bf9492 DJ |
5850 | { |
5851 | if (grandparent_scope == NULL) | |
5852 | parent->scope = parent->name; | |
5853 | else | |
3e43a32a MS |
5854 | parent->scope = typename_concat (&cu->comp_unit_obstack, |
5855 | grandparent_scope, | |
f55ee35c | 5856 | parent->name, 0, cu); |
72bf9492 | 5857 | } |
72bf9492 DJ |
5858 | else |
5859 | { | |
5860 | /* FIXME drow/2004-04-01: What should we be doing with | |
5861 | function-local names? For partial symbols, we should probably be | |
5862 | ignoring them. */ | |
5863 | complaint (&symfile_complaints, | |
e2e0b3e5 | 5864 | _("unhandled containing DIE tag %d for DIE at %d"), |
b64f50a1 | 5865 | parent->tag, pdi->offset.sect_off); |
72bf9492 | 5866 | parent->scope = grandparent_scope; |
c906108c SS |
5867 | } |
5868 | ||
72bf9492 DJ |
5869 | parent->scope_set = 1; |
5870 | return parent->scope; | |
5871 | } | |
5872 | ||
5873 | /* Return the fully scoped name associated with PDI, from compilation unit | |
5874 | CU. The result will be allocated with malloc. */ | |
4568ecf9 | 5875 | |
72bf9492 DJ |
5876 | static char * |
5877 | partial_die_full_name (struct partial_die_info *pdi, | |
5878 | struct dwarf2_cu *cu) | |
5879 | { | |
15d034d0 | 5880 | const char *parent_scope; |
72bf9492 | 5881 | |
98bfdba5 PA |
5882 | /* If this is a template instantiation, we can not work out the |
5883 | template arguments from partial DIEs. So, unfortunately, we have | |
5884 | to go through the full DIEs. At least any work we do building | |
5885 | types here will be reused if full symbols are loaded later. */ | |
5886 | if (pdi->has_template_arguments) | |
5887 | { | |
5888 | fixup_partial_die (pdi, cu); | |
5889 | ||
5890 | if (pdi->name != NULL && strchr (pdi->name, '<') == NULL) | |
5891 | { | |
5892 | struct die_info *die; | |
5893 | struct attribute attr; | |
5894 | struct dwarf2_cu *ref_cu = cu; | |
5895 | ||
b64f50a1 | 5896 | /* DW_FORM_ref_addr is using section offset. */ |
98bfdba5 PA |
5897 | attr.name = 0; |
5898 | attr.form = DW_FORM_ref_addr; | |
4568ecf9 | 5899 | attr.u.unsnd = pdi->offset.sect_off; |
98bfdba5 PA |
5900 | die = follow_die_ref (NULL, &attr, &ref_cu); |
5901 | ||
5902 | return xstrdup (dwarf2_full_name (NULL, die, ref_cu)); | |
5903 | } | |
5904 | } | |
5905 | ||
72bf9492 DJ |
5906 | parent_scope = partial_die_parent_scope (pdi, cu); |
5907 | if (parent_scope == NULL) | |
5908 | return NULL; | |
5909 | else | |
f55ee35c | 5910 | return typename_concat (NULL, parent_scope, pdi->name, 0, cu); |
c906108c SS |
5911 | } |
5912 | ||
5913 | static void | |
72bf9492 | 5914 | add_partial_symbol (struct partial_die_info *pdi, struct dwarf2_cu *cu) |
c906108c | 5915 | { |
e7c27a73 | 5916 | struct objfile *objfile = cu->objfile; |
c906108c | 5917 | CORE_ADDR addr = 0; |
15d034d0 | 5918 | const char *actual_name = NULL; |
e142c38c | 5919 | CORE_ADDR baseaddr; |
15d034d0 | 5920 | char *built_actual_name; |
e142c38c DJ |
5921 | |
5922 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 5923 | |
15d034d0 TT |
5924 | built_actual_name = partial_die_full_name (pdi, cu); |
5925 | if (built_actual_name != NULL) | |
5926 | actual_name = built_actual_name; | |
63d06c5c | 5927 | |
72bf9492 DJ |
5928 | if (actual_name == NULL) |
5929 | actual_name = pdi->name; | |
5930 | ||
c906108c SS |
5931 | switch (pdi->tag) |
5932 | { | |
5933 | case DW_TAG_subprogram: | |
2cfa0c8d | 5934 | if (pdi->is_external || cu->language == language_ada) |
c906108c | 5935 | { |
2cfa0c8d JB |
5936 | /* brobecker/2007-12-26: Normally, only "external" DIEs are part |
5937 | of the global scope. But in Ada, we want to be able to access | |
5938 | nested procedures globally. So all Ada subprograms are stored | |
5939 | in the global scope. */ | |
f47fb265 | 5940 | /* prim_record_minimal_symbol (actual_name, pdi->lowpc + baseaddr, |
c5aa993b | 5941 | mst_text, objfile); */ |
f47fb265 | 5942 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 5943 | built_actual_name != NULL, |
f47fb265 MS |
5944 | VAR_DOMAIN, LOC_BLOCK, |
5945 | &objfile->global_psymbols, | |
5946 | 0, pdi->lowpc + baseaddr, | |
5947 | cu->language, objfile); | |
c906108c SS |
5948 | } |
5949 | else | |
5950 | { | |
f47fb265 | 5951 | /* prim_record_minimal_symbol (actual_name, pdi->lowpc + baseaddr, |
c5aa993b | 5952 | mst_file_text, objfile); */ |
f47fb265 | 5953 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 5954 | built_actual_name != NULL, |
f47fb265 MS |
5955 | VAR_DOMAIN, LOC_BLOCK, |
5956 | &objfile->static_psymbols, | |
5957 | 0, pdi->lowpc + baseaddr, | |
5958 | cu->language, objfile); | |
c906108c SS |
5959 | } |
5960 | break; | |
72929c62 JB |
5961 | case DW_TAG_constant: |
5962 | { | |
5963 | struct psymbol_allocation_list *list; | |
5964 | ||
5965 | if (pdi->is_external) | |
5966 | list = &objfile->global_psymbols; | |
5967 | else | |
5968 | list = &objfile->static_psymbols; | |
f47fb265 | 5969 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 5970 | built_actual_name != NULL, VAR_DOMAIN, LOC_STATIC, |
f47fb265 | 5971 | list, 0, 0, cu->language, objfile); |
72929c62 JB |
5972 | } |
5973 | break; | |
c906108c | 5974 | case DW_TAG_variable: |
95554aad TT |
5975 | if (pdi->d.locdesc) |
5976 | addr = decode_locdesc (pdi->d.locdesc, cu); | |
caac4577 | 5977 | |
95554aad | 5978 | if (pdi->d.locdesc |
caac4577 JG |
5979 | && addr == 0 |
5980 | && !dwarf2_per_objfile->has_section_at_zero) | |
5981 | { | |
5982 | /* A global or static variable may also have been stripped | |
5983 | out by the linker if unused, in which case its address | |
5984 | will be nullified; do not add such variables into partial | |
5985 | symbol table then. */ | |
5986 | } | |
5987 | else if (pdi->is_external) | |
c906108c SS |
5988 | { |
5989 | /* Global Variable. | |
5990 | Don't enter into the minimal symbol tables as there is | |
5991 | a minimal symbol table entry from the ELF symbols already. | |
5992 | Enter into partial symbol table if it has a location | |
5993 | descriptor or a type. | |
5994 | If the location descriptor is missing, new_symbol will create | |
5995 | a LOC_UNRESOLVED symbol, the address of the variable will then | |
5996 | be determined from the minimal symbol table whenever the variable | |
5997 | is referenced. | |
5998 | The address for the partial symbol table entry is not | |
5999 | used by GDB, but it comes in handy for debugging partial symbol | |
6000 | table building. */ | |
6001 | ||
95554aad | 6002 | if (pdi->d.locdesc || pdi->has_type) |
f47fb265 | 6003 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 6004 | built_actual_name != NULL, |
f47fb265 MS |
6005 | VAR_DOMAIN, LOC_STATIC, |
6006 | &objfile->global_psymbols, | |
6007 | 0, addr + baseaddr, | |
6008 | cu->language, objfile); | |
c906108c SS |
6009 | } |
6010 | else | |
6011 | { | |
0963b4bd | 6012 | /* Static Variable. Skip symbols without location descriptors. */ |
95554aad | 6013 | if (pdi->d.locdesc == NULL) |
decbce07 | 6014 | { |
15d034d0 | 6015 | xfree (built_actual_name); |
decbce07 MS |
6016 | return; |
6017 | } | |
f47fb265 | 6018 | /* prim_record_minimal_symbol (actual_name, addr + baseaddr, |
c5aa993b | 6019 | mst_file_data, objfile); */ |
f47fb265 | 6020 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 6021 | built_actual_name != NULL, |
f47fb265 MS |
6022 | VAR_DOMAIN, LOC_STATIC, |
6023 | &objfile->static_psymbols, | |
6024 | 0, addr + baseaddr, | |
6025 | cu->language, objfile); | |
c906108c SS |
6026 | } |
6027 | break; | |
6028 | case DW_TAG_typedef: | |
6029 | case DW_TAG_base_type: | |
a02abb62 | 6030 | case DW_TAG_subrange_type: |
38d518c9 | 6031 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 6032 | built_actual_name != NULL, |
176620f1 | 6033 | VAR_DOMAIN, LOC_TYPEDEF, |
c906108c | 6034 | &objfile->static_psymbols, |
e142c38c | 6035 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c | 6036 | break; |
72bf9492 DJ |
6037 | case DW_TAG_namespace: |
6038 | add_psymbol_to_list (actual_name, strlen (actual_name), | |
15d034d0 | 6039 | built_actual_name != NULL, |
72bf9492 DJ |
6040 | VAR_DOMAIN, LOC_TYPEDEF, |
6041 | &objfile->global_psymbols, | |
6042 | 0, (CORE_ADDR) 0, cu->language, objfile); | |
6043 | break; | |
c906108c | 6044 | case DW_TAG_class_type: |
680b30c7 | 6045 | case DW_TAG_interface_type: |
c906108c SS |
6046 | case DW_TAG_structure_type: |
6047 | case DW_TAG_union_type: | |
6048 | case DW_TAG_enumeration_type: | |
fa4028e9 JB |
6049 | /* Skip external references. The DWARF standard says in the section |
6050 | about "Structure, Union, and Class Type Entries": "An incomplete | |
6051 | structure, union or class type is represented by a structure, | |
6052 | union or class entry that does not have a byte size attribute | |
6053 | and that has a DW_AT_declaration attribute." */ | |
6054 | if (!pdi->has_byte_size && pdi->is_declaration) | |
decbce07 | 6055 | { |
15d034d0 | 6056 | xfree (built_actual_name); |
decbce07 MS |
6057 | return; |
6058 | } | |
fa4028e9 | 6059 | |
63d06c5c DC |
6060 | /* NOTE: carlton/2003-10-07: See comment in new_symbol about |
6061 | static vs. global. */ | |
38d518c9 | 6062 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 6063 | built_actual_name != NULL, |
176620f1 | 6064 | STRUCT_DOMAIN, LOC_TYPEDEF, |
987504bb JJ |
6065 | (cu->language == language_cplus |
6066 | || cu->language == language_java) | |
63d06c5c DC |
6067 | ? &objfile->global_psymbols |
6068 | : &objfile->static_psymbols, | |
e142c38c | 6069 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c | 6070 | |
c906108c SS |
6071 | break; |
6072 | case DW_TAG_enumerator: | |
38d518c9 | 6073 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 6074 | built_actual_name != NULL, |
176620f1 | 6075 | VAR_DOMAIN, LOC_CONST, |
987504bb JJ |
6076 | (cu->language == language_cplus |
6077 | || cu->language == language_java) | |
f6fe98ef DJ |
6078 | ? &objfile->global_psymbols |
6079 | : &objfile->static_psymbols, | |
e142c38c | 6080 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c SS |
6081 | break; |
6082 | default: | |
6083 | break; | |
6084 | } | |
5c4e30ca | 6085 | |
15d034d0 | 6086 | xfree (built_actual_name); |
c906108c SS |
6087 | } |
6088 | ||
5c4e30ca DC |
6089 | /* Read a partial die corresponding to a namespace; also, add a symbol |
6090 | corresponding to that namespace to the symbol table. NAMESPACE is | |
6091 | the name of the enclosing namespace. */ | |
91c24f0a | 6092 | |
72bf9492 DJ |
6093 | static void |
6094 | add_partial_namespace (struct partial_die_info *pdi, | |
91c24f0a | 6095 | CORE_ADDR *lowpc, CORE_ADDR *highpc, |
5734ee8b | 6096 | int need_pc, struct dwarf2_cu *cu) |
91c24f0a | 6097 | { |
72bf9492 | 6098 | /* Add a symbol for the namespace. */ |
e7c27a73 | 6099 | |
72bf9492 | 6100 | add_partial_symbol (pdi, cu); |
5c4e30ca DC |
6101 | |
6102 | /* Now scan partial symbols in that namespace. */ | |
6103 | ||
91c24f0a | 6104 | if (pdi->has_children) |
5734ee8b | 6105 | scan_partial_symbols (pdi->die_child, lowpc, highpc, need_pc, cu); |
91c24f0a DC |
6106 | } |
6107 | ||
5d7cb8df JK |
6108 | /* Read a partial die corresponding to a Fortran module. */ |
6109 | ||
6110 | static void | |
6111 | add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, | |
6112 | CORE_ADDR *highpc, int need_pc, struct dwarf2_cu *cu) | |
6113 | { | |
f55ee35c | 6114 | /* Now scan partial symbols in that module. */ |
5d7cb8df JK |
6115 | |
6116 | if (pdi->has_children) | |
6117 | scan_partial_symbols (pdi->die_child, lowpc, highpc, need_pc, cu); | |
6118 | } | |
6119 | ||
bc30ff58 JB |
6120 | /* Read a partial die corresponding to a subprogram and create a partial |
6121 | symbol for that subprogram. When the CU language allows it, this | |
6122 | routine also defines a partial symbol for each nested subprogram | |
6123 | that this subprogram contains. | |
6e70227d | 6124 | |
bc30ff58 JB |
6125 | DIE my also be a lexical block, in which case we simply search |
6126 | recursively for suprograms defined inside that lexical block. | |
6127 | Again, this is only performed when the CU language allows this | |
6128 | type of definitions. */ | |
6129 | ||
6130 | static void | |
6131 | add_partial_subprogram (struct partial_die_info *pdi, | |
6132 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 6133 | int need_pc, struct dwarf2_cu *cu) |
bc30ff58 JB |
6134 | { |
6135 | if (pdi->tag == DW_TAG_subprogram) | |
6136 | { | |
6137 | if (pdi->has_pc_info) | |
6138 | { | |
6139 | if (pdi->lowpc < *lowpc) | |
6140 | *lowpc = pdi->lowpc; | |
6141 | if (pdi->highpc > *highpc) | |
6142 | *highpc = pdi->highpc; | |
5734ee8b DJ |
6143 | if (need_pc) |
6144 | { | |
6145 | CORE_ADDR baseaddr; | |
6146 | struct objfile *objfile = cu->objfile; | |
6147 | ||
6148 | baseaddr = ANOFFSET (objfile->section_offsets, | |
6149 | SECT_OFF_TEXT (objfile)); | |
6150 | addrmap_set_empty (objfile->psymtabs_addrmap, | |
01637564 DE |
6151 | pdi->lowpc + baseaddr, |
6152 | pdi->highpc - 1 + baseaddr, | |
9291a0cd | 6153 | cu->per_cu->v.psymtab); |
5734ee8b | 6154 | } |
481860b3 GB |
6155 | } |
6156 | ||
6157 | if (pdi->has_pc_info || (!pdi->is_external && pdi->may_be_inlined)) | |
6158 | { | |
bc30ff58 | 6159 | if (!pdi->is_declaration) |
e8d05480 JB |
6160 | /* Ignore subprogram DIEs that do not have a name, they are |
6161 | illegal. Do not emit a complaint at this point, we will | |
6162 | do so when we convert this psymtab into a symtab. */ | |
6163 | if (pdi->name) | |
6164 | add_partial_symbol (pdi, cu); | |
bc30ff58 JB |
6165 | } |
6166 | } | |
6e70227d | 6167 | |
bc30ff58 JB |
6168 | if (! pdi->has_children) |
6169 | return; | |
6170 | ||
6171 | if (cu->language == language_ada) | |
6172 | { | |
6173 | pdi = pdi->die_child; | |
6174 | while (pdi != NULL) | |
6175 | { | |
6176 | fixup_partial_die (pdi, cu); | |
6177 | if (pdi->tag == DW_TAG_subprogram | |
6178 | || pdi->tag == DW_TAG_lexical_block) | |
5734ee8b | 6179 | add_partial_subprogram (pdi, lowpc, highpc, need_pc, cu); |
bc30ff58 JB |
6180 | pdi = pdi->die_sibling; |
6181 | } | |
6182 | } | |
6183 | } | |
6184 | ||
91c24f0a DC |
6185 | /* Read a partial die corresponding to an enumeration type. */ |
6186 | ||
72bf9492 DJ |
6187 | static void |
6188 | add_partial_enumeration (struct partial_die_info *enum_pdi, | |
6189 | struct dwarf2_cu *cu) | |
91c24f0a | 6190 | { |
72bf9492 | 6191 | struct partial_die_info *pdi; |
91c24f0a DC |
6192 | |
6193 | if (enum_pdi->name != NULL) | |
72bf9492 DJ |
6194 | add_partial_symbol (enum_pdi, cu); |
6195 | ||
6196 | pdi = enum_pdi->die_child; | |
6197 | while (pdi) | |
91c24f0a | 6198 | { |
72bf9492 | 6199 | if (pdi->tag != DW_TAG_enumerator || pdi->name == NULL) |
e2e0b3e5 | 6200 | complaint (&symfile_complaints, _("malformed enumerator DIE ignored")); |
91c24f0a | 6201 | else |
72bf9492 DJ |
6202 | add_partial_symbol (pdi, cu); |
6203 | pdi = pdi->die_sibling; | |
91c24f0a | 6204 | } |
91c24f0a DC |
6205 | } |
6206 | ||
6caca83c CC |
6207 | /* Return the initial uleb128 in the die at INFO_PTR. */ |
6208 | ||
6209 | static unsigned int | |
6210 | peek_abbrev_code (bfd *abfd, gdb_byte *info_ptr) | |
6211 | { | |
6212 | unsigned int bytes_read; | |
6213 | ||
6214 | return read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
6215 | } | |
6216 | ||
4bb7a0a7 DJ |
6217 | /* Read the initial uleb128 in the die at INFO_PTR in compilation unit CU. |
6218 | Return the corresponding abbrev, or NULL if the number is zero (indicating | |
6219 | an empty DIE). In either case *BYTES_READ will be set to the length of | |
6220 | the initial number. */ | |
6221 | ||
6222 | static struct abbrev_info * | |
fe1b8b76 | 6223 | peek_die_abbrev (gdb_byte *info_ptr, unsigned int *bytes_read, |
891d2f0b | 6224 | struct dwarf2_cu *cu) |
4bb7a0a7 DJ |
6225 | { |
6226 | bfd *abfd = cu->objfile->obfd; | |
6227 | unsigned int abbrev_number; | |
6228 | struct abbrev_info *abbrev; | |
6229 | ||
6230 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
6231 | ||
6232 | if (abbrev_number == 0) | |
6233 | return NULL; | |
6234 | ||
433df2d4 | 6235 | abbrev = abbrev_table_lookup_abbrev (cu->abbrev_table, abbrev_number); |
4bb7a0a7 DJ |
6236 | if (!abbrev) |
6237 | { | |
3e43a32a MS |
6238 | error (_("Dwarf Error: Could not find abbrev number %d [in module %s]"), |
6239 | abbrev_number, bfd_get_filename (abfd)); | |
4bb7a0a7 DJ |
6240 | } |
6241 | ||
6242 | return abbrev; | |
6243 | } | |
6244 | ||
93311388 DE |
6245 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
6246 | Returns a pointer to the end of a series of DIEs, terminated by an empty | |
4bb7a0a7 DJ |
6247 | DIE. Any children of the skipped DIEs will also be skipped. */ |
6248 | ||
fe1b8b76 | 6249 | static gdb_byte * |
dee91e82 | 6250 | skip_children (const struct die_reader_specs *reader, gdb_byte *info_ptr) |
4bb7a0a7 | 6251 | { |
dee91e82 | 6252 | struct dwarf2_cu *cu = reader->cu; |
4bb7a0a7 DJ |
6253 | struct abbrev_info *abbrev; |
6254 | unsigned int bytes_read; | |
6255 | ||
6256 | while (1) | |
6257 | { | |
6258 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, cu); | |
6259 | if (abbrev == NULL) | |
6260 | return info_ptr + bytes_read; | |
6261 | else | |
dee91e82 | 6262 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
4bb7a0a7 DJ |
6263 | } |
6264 | } | |
6265 | ||
93311388 DE |
6266 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
6267 | INFO_PTR should point just after the initial uleb128 of a DIE, and the | |
4bb7a0a7 DJ |
6268 | abbrev corresponding to that skipped uleb128 should be passed in |
6269 | ABBREV. Returns a pointer to this DIE's sibling, skipping any | |
6270 | children. */ | |
6271 | ||
fe1b8b76 | 6272 | static gdb_byte * |
dee91e82 DE |
6273 | skip_one_die (const struct die_reader_specs *reader, gdb_byte *info_ptr, |
6274 | struct abbrev_info *abbrev) | |
4bb7a0a7 DJ |
6275 | { |
6276 | unsigned int bytes_read; | |
6277 | struct attribute attr; | |
dee91e82 DE |
6278 | bfd *abfd = reader->abfd; |
6279 | struct dwarf2_cu *cu = reader->cu; | |
6280 | gdb_byte *buffer = reader->buffer; | |
f664829e DE |
6281 | const gdb_byte *buffer_end = reader->buffer_end; |
6282 | gdb_byte *start_info_ptr = info_ptr; | |
4bb7a0a7 DJ |
6283 | unsigned int form, i; |
6284 | ||
6285 | for (i = 0; i < abbrev->num_attrs; i++) | |
6286 | { | |
6287 | /* The only abbrev we care about is DW_AT_sibling. */ | |
6288 | if (abbrev->attrs[i].name == DW_AT_sibling) | |
6289 | { | |
dee91e82 | 6290 | read_attribute (reader, &attr, &abbrev->attrs[i], info_ptr); |
4bb7a0a7 | 6291 | if (attr.form == DW_FORM_ref_addr) |
3e43a32a MS |
6292 | complaint (&symfile_complaints, |
6293 | _("ignoring absolute DW_AT_sibling")); | |
4bb7a0a7 | 6294 | else |
b64f50a1 | 6295 | return buffer + dwarf2_get_ref_die_offset (&attr).sect_off; |
4bb7a0a7 DJ |
6296 | } |
6297 | ||
6298 | /* If it isn't DW_AT_sibling, skip this attribute. */ | |
6299 | form = abbrev->attrs[i].form; | |
6300 | skip_attribute: | |
6301 | switch (form) | |
6302 | { | |
4bb7a0a7 | 6303 | case DW_FORM_ref_addr: |
ae411497 TT |
6304 | /* In DWARF 2, DW_FORM_ref_addr is address sized; in DWARF 3 |
6305 | and later it is offset sized. */ | |
6306 | if (cu->header.version == 2) | |
6307 | info_ptr += cu->header.addr_size; | |
6308 | else | |
6309 | info_ptr += cu->header.offset_size; | |
6310 | break; | |
36586728 TT |
6311 | case DW_FORM_GNU_ref_alt: |
6312 | info_ptr += cu->header.offset_size; | |
6313 | break; | |
ae411497 | 6314 | case DW_FORM_addr: |
4bb7a0a7 DJ |
6315 | info_ptr += cu->header.addr_size; |
6316 | break; | |
6317 | case DW_FORM_data1: | |
6318 | case DW_FORM_ref1: | |
6319 | case DW_FORM_flag: | |
6320 | info_ptr += 1; | |
6321 | break; | |
2dc7f7b3 TT |
6322 | case DW_FORM_flag_present: |
6323 | break; | |
4bb7a0a7 DJ |
6324 | case DW_FORM_data2: |
6325 | case DW_FORM_ref2: | |
6326 | info_ptr += 2; | |
6327 | break; | |
6328 | case DW_FORM_data4: | |
6329 | case DW_FORM_ref4: | |
6330 | info_ptr += 4; | |
6331 | break; | |
6332 | case DW_FORM_data8: | |
6333 | case DW_FORM_ref8: | |
55f1336d | 6334 | case DW_FORM_ref_sig8: |
4bb7a0a7 DJ |
6335 | info_ptr += 8; |
6336 | break; | |
6337 | case DW_FORM_string: | |
9b1c24c8 | 6338 | read_direct_string (abfd, info_ptr, &bytes_read); |
4bb7a0a7 DJ |
6339 | info_ptr += bytes_read; |
6340 | break; | |
2dc7f7b3 | 6341 | case DW_FORM_sec_offset: |
4bb7a0a7 | 6342 | case DW_FORM_strp: |
36586728 | 6343 | case DW_FORM_GNU_strp_alt: |
4bb7a0a7 DJ |
6344 | info_ptr += cu->header.offset_size; |
6345 | break; | |
2dc7f7b3 | 6346 | case DW_FORM_exprloc: |
4bb7a0a7 DJ |
6347 | case DW_FORM_block: |
6348 | info_ptr += read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
6349 | info_ptr += bytes_read; | |
6350 | break; | |
6351 | case DW_FORM_block1: | |
6352 | info_ptr += 1 + read_1_byte (abfd, info_ptr); | |
6353 | break; | |
6354 | case DW_FORM_block2: | |
6355 | info_ptr += 2 + read_2_bytes (abfd, info_ptr); | |
6356 | break; | |
6357 | case DW_FORM_block4: | |
6358 | info_ptr += 4 + read_4_bytes (abfd, info_ptr); | |
6359 | break; | |
6360 | case DW_FORM_sdata: | |
6361 | case DW_FORM_udata: | |
6362 | case DW_FORM_ref_udata: | |
3019eac3 DE |
6363 | case DW_FORM_GNU_addr_index: |
6364 | case DW_FORM_GNU_str_index: | |
f664829e | 6365 | info_ptr = (gdb_byte *) safe_skip_leb128 (info_ptr, buffer_end); |
4bb7a0a7 DJ |
6366 | break; |
6367 | case DW_FORM_indirect: | |
6368 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
6369 | info_ptr += bytes_read; | |
6370 | /* We need to continue parsing from here, so just go back to | |
6371 | the top. */ | |
6372 | goto skip_attribute; | |
6373 | ||
6374 | default: | |
3e43a32a MS |
6375 | error (_("Dwarf Error: Cannot handle %s " |
6376 | "in DWARF reader [in module %s]"), | |
4bb7a0a7 DJ |
6377 | dwarf_form_name (form), |
6378 | bfd_get_filename (abfd)); | |
6379 | } | |
6380 | } | |
6381 | ||
6382 | if (abbrev->has_children) | |
dee91e82 | 6383 | return skip_children (reader, info_ptr); |
4bb7a0a7 DJ |
6384 | else |
6385 | return info_ptr; | |
6386 | } | |
6387 | ||
93311388 | 6388 | /* Locate ORIG_PDI's sibling. |
dee91e82 | 6389 | INFO_PTR should point to the start of the next DIE after ORIG_PDI. */ |
91c24f0a | 6390 | |
fe1b8b76 | 6391 | static gdb_byte * |
dee91e82 DE |
6392 | locate_pdi_sibling (const struct die_reader_specs *reader, |
6393 | struct partial_die_info *orig_pdi, | |
6394 | gdb_byte *info_ptr) | |
91c24f0a DC |
6395 | { |
6396 | /* Do we know the sibling already? */ | |
72bf9492 | 6397 | |
91c24f0a DC |
6398 | if (orig_pdi->sibling) |
6399 | return orig_pdi->sibling; | |
6400 | ||
6401 | /* Are there any children to deal with? */ | |
6402 | ||
6403 | if (!orig_pdi->has_children) | |
6404 | return info_ptr; | |
6405 | ||
4bb7a0a7 | 6406 | /* Skip the children the long way. */ |
91c24f0a | 6407 | |
dee91e82 | 6408 | return skip_children (reader, info_ptr); |
91c24f0a DC |
6409 | } |
6410 | ||
257e7a09 | 6411 | /* Expand this partial symbol table into a full symbol table. SELF is |
442e4d9c | 6412 | not NULL. */ |
c906108c SS |
6413 | |
6414 | static void | |
257e7a09 YQ |
6415 | dwarf2_read_symtab (struct partial_symtab *self, |
6416 | struct objfile *objfile) | |
c906108c | 6417 | { |
257e7a09 | 6418 | if (self->readin) |
c906108c | 6419 | { |
442e4d9c | 6420 | warning (_("bug: psymtab for %s is already read in."), |
257e7a09 | 6421 | self->filename); |
442e4d9c YQ |
6422 | } |
6423 | else | |
6424 | { | |
6425 | if (info_verbose) | |
c906108c | 6426 | { |
442e4d9c | 6427 | printf_filtered (_("Reading in symbols for %s..."), |
257e7a09 | 6428 | self->filename); |
442e4d9c | 6429 | gdb_flush (gdb_stdout); |
c906108c | 6430 | } |
c906108c | 6431 | |
442e4d9c YQ |
6432 | /* Restore our global data. */ |
6433 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); | |
10b3939b | 6434 | |
442e4d9c YQ |
6435 | /* If this psymtab is constructed from a debug-only objfile, the |
6436 | has_section_at_zero flag will not necessarily be correct. We | |
6437 | can get the correct value for this flag by looking at the data | |
6438 | associated with the (presumably stripped) associated objfile. */ | |
6439 | if (objfile->separate_debug_objfile_backlink) | |
6440 | { | |
6441 | struct dwarf2_per_objfile *dpo_backlink | |
6442 | = objfile_data (objfile->separate_debug_objfile_backlink, | |
6443 | dwarf2_objfile_data_key); | |
9a619af0 | 6444 | |
442e4d9c YQ |
6445 | dwarf2_per_objfile->has_section_at_zero |
6446 | = dpo_backlink->has_section_at_zero; | |
6447 | } | |
b2ab525c | 6448 | |
442e4d9c | 6449 | dwarf2_per_objfile->reading_partial_symbols = 0; |
98bfdba5 | 6450 | |
257e7a09 | 6451 | psymtab_to_symtab_1 (self); |
c906108c | 6452 | |
442e4d9c YQ |
6453 | /* Finish up the debug error message. */ |
6454 | if (info_verbose) | |
6455 | printf_filtered (_("done.\n")); | |
c906108c | 6456 | } |
95554aad TT |
6457 | |
6458 | process_cu_includes (); | |
c906108c | 6459 | } |
9cdd5dbd DE |
6460 | \f |
6461 | /* Reading in full CUs. */ | |
c906108c | 6462 | |
10b3939b DJ |
6463 | /* Add PER_CU to the queue. */ |
6464 | ||
6465 | static void | |
95554aad TT |
6466 | queue_comp_unit (struct dwarf2_per_cu_data *per_cu, |
6467 | enum language pretend_language) | |
10b3939b DJ |
6468 | { |
6469 | struct dwarf2_queue_item *item; | |
6470 | ||
6471 | per_cu->queued = 1; | |
6472 | item = xmalloc (sizeof (*item)); | |
6473 | item->per_cu = per_cu; | |
95554aad | 6474 | item->pretend_language = pretend_language; |
10b3939b DJ |
6475 | item->next = NULL; |
6476 | ||
6477 | if (dwarf2_queue == NULL) | |
6478 | dwarf2_queue = item; | |
6479 | else | |
6480 | dwarf2_queue_tail->next = item; | |
6481 | ||
6482 | dwarf2_queue_tail = item; | |
6483 | } | |
6484 | ||
0907af0c DE |
6485 | /* THIS_CU has a reference to PER_CU. If necessary, load the new compilation |
6486 | unit and add it to our queue. | |
6487 | The result is non-zero if PER_CU was queued, otherwise the result is zero | |
6488 | meaning either PER_CU is already queued or it is already loaded. */ | |
6489 | ||
6490 | static int | |
6491 | maybe_queue_comp_unit (struct dwarf2_cu *this_cu, | |
6492 | struct dwarf2_per_cu_data *per_cu, | |
6493 | enum language pretend_language) | |
6494 | { | |
6495 | /* We may arrive here during partial symbol reading, if we need full | |
6496 | DIEs to process an unusual case (e.g. template arguments). Do | |
6497 | not queue PER_CU, just tell our caller to load its DIEs. */ | |
6498 | if (dwarf2_per_objfile->reading_partial_symbols) | |
6499 | { | |
6500 | if (per_cu->cu == NULL || per_cu->cu->dies == NULL) | |
6501 | return 1; | |
6502 | return 0; | |
6503 | } | |
6504 | ||
6505 | /* Mark the dependence relation so that we don't flush PER_CU | |
6506 | too early. */ | |
6507 | dwarf2_add_dependence (this_cu, per_cu); | |
6508 | ||
6509 | /* If it's already on the queue, we have nothing to do. */ | |
6510 | if (per_cu->queued) | |
6511 | return 0; | |
6512 | ||
6513 | /* If the compilation unit is already loaded, just mark it as | |
6514 | used. */ | |
6515 | if (per_cu->cu != NULL) | |
6516 | { | |
6517 | per_cu->cu->last_used = 0; | |
6518 | return 0; | |
6519 | } | |
6520 | ||
6521 | /* Add it to the queue. */ | |
6522 | queue_comp_unit (per_cu, pretend_language); | |
6523 | ||
6524 | return 1; | |
6525 | } | |
6526 | ||
10b3939b DJ |
6527 | /* Process the queue. */ |
6528 | ||
6529 | static void | |
a0f42c21 | 6530 | process_queue (void) |
10b3939b DJ |
6531 | { |
6532 | struct dwarf2_queue_item *item, *next_item; | |
6533 | ||
45cfd468 DE |
6534 | if (dwarf2_read_debug) |
6535 | { | |
6536 | fprintf_unfiltered (gdb_stdlog, | |
6537 | "Expanding one or more symtabs of objfile %s ...\n", | |
6538 | dwarf2_per_objfile->objfile->name); | |
6539 | } | |
6540 | ||
03dd20cc DJ |
6541 | /* The queue starts out with one item, but following a DIE reference |
6542 | may load a new CU, adding it to the end of the queue. */ | |
10b3939b DJ |
6543 | for (item = dwarf2_queue; item != NULL; dwarf2_queue = item = next_item) |
6544 | { | |
9291a0cd TT |
6545 | if (dwarf2_per_objfile->using_index |
6546 | ? !item->per_cu->v.quick->symtab | |
6547 | : (item->per_cu->v.psymtab && !item->per_cu->v.psymtab->readin)) | |
f4dc4d17 DE |
6548 | { |
6549 | struct dwarf2_per_cu_data *per_cu = item->per_cu; | |
6550 | ||
6551 | if (dwarf2_read_debug) | |
6552 | { | |
6553 | fprintf_unfiltered (gdb_stdlog, | |
6554 | "Expanding symtab of %s at offset 0x%x\n", | |
6555 | per_cu->is_debug_types ? "TU" : "CU", | |
6556 | per_cu->offset.sect_off); | |
6557 | } | |
6558 | ||
6559 | if (per_cu->is_debug_types) | |
6560 | process_full_type_unit (per_cu, item->pretend_language); | |
6561 | else | |
6562 | process_full_comp_unit (per_cu, item->pretend_language); | |
6563 | ||
6564 | if (dwarf2_read_debug) | |
6565 | { | |
6566 | fprintf_unfiltered (gdb_stdlog, | |
6567 | "Done expanding %s at offset 0x%x\n", | |
6568 | per_cu->is_debug_types ? "TU" : "CU", | |
6569 | per_cu->offset.sect_off); | |
6570 | } | |
6571 | } | |
10b3939b DJ |
6572 | |
6573 | item->per_cu->queued = 0; | |
6574 | next_item = item->next; | |
6575 | xfree (item); | |
6576 | } | |
6577 | ||
6578 | dwarf2_queue_tail = NULL; | |
45cfd468 DE |
6579 | |
6580 | if (dwarf2_read_debug) | |
6581 | { | |
6582 | fprintf_unfiltered (gdb_stdlog, "Done expanding symtabs of %s.\n", | |
6583 | dwarf2_per_objfile->objfile->name); | |
6584 | } | |
10b3939b DJ |
6585 | } |
6586 | ||
6587 | /* Free all allocated queue entries. This function only releases anything if | |
6588 | an error was thrown; if the queue was processed then it would have been | |
6589 | freed as we went along. */ | |
6590 | ||
6591 | static void | |
6592 | dwarf2_release_queue (void *dummy) | |
6593 | { | |
6594 | struct dwarf2_queue_item *item, *last; | |
6595 | ||
6596 | item = dwarf2_queue; | |
6597 | while (item) | |
6598 | { | |
6599 | /* Anything still marked queued is likely to be in an | |
6600 | inconsistent state, so discard it. */ | |
6601 | if (item->per_cu->queued) | |
6602 | { | |
6603 | if (item->per_cu->cu != NULL) | |
dee91e82 | 6604 | free_one_cached_comp_unit (item->per_cu); |
10b3939b DJ |
6605 | item->per_cu->queued = 0; |
6606 | } | |
6607 | ||
6608 | last = item; | |
6609 | item = item->next; | |
6610 | xfree (last); | |
6611 | } | |
6612 | ||
6613 | dwarf2_queue = dwarf2_queue_tail = NULL; | |
6614 | } | |
6615 | ||
6616 | /* Read in full symbols for PST, and anything it depends on. */ | |
6617 | ||
c906108c | 6618 | static void |
fba45db2 | 6619 | psymtab_to_symtab_1 (struct partial_symtab *pst) |
c906108c | 6620 | { |
10b3939b | 6621 | struct dwarf2_per_cu_data *per_cu; |
aaa75496 JB |
6622 | int i; |
6623 | ||
95554aad TT |
6624 | if (pst->readin) |
6625 | return; | |
6626 | ||
aaa75496 | 6627 | for (i = 0; i < pst->number_of_dependencies; i++) |
95554aad TT |
6628 | if (!pst->dependencies[i]->readin |
6629 | && pst->dependencies[i]->user == NULL) | |
aaa75496 JB |
6630 | { |
6631 | /* Inform about additional files that need to be read in. */ | |
6632 | if (info_verbose) | |
6633 | { | |
a3f17187 | 6634 | /* FIXME: i18n: Need to make this a single string. */ |
aaa75496 JB |
6635 | fputs_filtered (" ", gdb_stdout); |
6636 | wrap_here (""); | |
6637 | fputs_filtered ("and ", gdb_stdout); | |
6638 | wrap_here (""); | |
6639 | printf_filtered ("%s...", pst->dependencies[i]->filename); | |
0963b4bd | 6640 | wrap_here (""); /* Flush output. */ |
aaa75496 JB |
6641 | gdb_flush (gdb_stdout); |
6642 | } | |
6643 | psymtab_to_symtab_1 (pst->dependencies[i]); | |
6644 | } | |
6645 | ||
e38df1d0 | 6646 | per_cu = pst->read_symtab_private; |
10b3939b DJ |
6647 | |
6648 | if (per_cu == NULL) | |
aaa75496 JB |
6649 | { |
6650 | /* It's an include file, no symbols to read for it. | |
6651 | Everything is in the parent symtab. */ | |
6652 | pst->readin = 1; | |
6653 | return; | |
6654 | } | |
c906108c | 6655 | |
a0f42c21 | 6656 | dw2_do_instantiate_symtab (per_cu); |
10b3939b DJ |
6657 | } |
6658 | ||
dee91e82 DE |
6659 | /* Trivial hash function for die_info: the hash value of a DIE |
6660 | is its offset in .debug_info for this objfile. */ | |
10b3939b | 6661 | |
dee91e82 DE |
6662 | static hashval_t |
6663 | die_hash (const void *item) | |
10b3939b | 6664 | { |
dee91e82 | 6665 | const struct die_info *die = item; |
6502dd73 | 6666 | |
dee91e82 DE |
6667 | return die->offset.sect_off; |
6668 | } | |
63d06c5c | 6669 | |
dee91e82 DE |
6670 | /* Trivial comparison function for die_info structures: two DIEs |
6671 | are equal if they have the same offset. */ | |
98bfdba5 | 6672 | |
dee91e82 DE |
6673 | static int |
6674 | die_eq (const void *item_lhs, const void *item_rhs) | |
6675 | { | |
6676 | const struct die_info *die_lhs = item_lhs; | |
6677 | const struct die_info *die_rhs = item_rhs; | |
c906108c | 6678 | |
dee91e82 DE |
6679 | return die_lhs->offset.sect_off == die_rhs->offset.sect_off; |
6680 | } | |
c906108c | 6681 | |
dee91e82 DE |
6682 | /* die_reader_func for load_full_comp_unit. |
6683 | This is identical to read_signatured_type_reader, | |
6684 | but is kept separate for now. */ | |
c906108c | 6685 | |
dee91e82 DE |
6686 | static void |
6687 | load_full_comp_unit_reader (const struct die_reader_specs *reader, | |
6688 | gdb_byte *info_ptr, | |
6689 | struct die_info *comp_unit_die, | |
6690 | int has_children, | |
6691 | void *data) | |
6692 | { | |
6693 | struct dwarf2_cu *cu = reader->cu; | |
95554aad | 6694 | enum language *language_ptr = data; |
6caca83c | 6695 | |
dee91e82 DE |
6696 | gdb_assert (cu->die_hash == NULL); |
6697 | cu->die_hash = | |
6698 | htab_create_alloc_ex (cu->header.length / 12, | |
6699 | die_hash, | |
6700 | die_eq, | |
6701 | NULL, | |
6702 | &cu->comp_unit_obstack, | |
6703 | hashtab_obstack_allocate, | |
6704 | dummy_obstack_deallocate); | |
e142c38c | 6705 | |
dee91e82 DE |
6706 | if (has_children) |
6707 | comp_unit_die->child = read_die_and_siblings (reader, info_ptr, | |
6708 | &info_ptr, comp_unit_die); | |
6709 | cu->dies = comp_unit_die; | |
6710 | /* comp_unit_die is not stored in die_hash, no need. */ | |
10b3939b DJ |
6711 | |
6712 | /* We try not to read any attributes in this function, because not | |
9cdd5dbd | 6713 | all CUs needed for references have been loaded yet, and symbol |
10b3939b | 6714 | table processing isn't initialized. But we have to set the CU language, |
dee91e82 DE |
6715 | or we won't be able to build types correctly. |
6716 | Similarly, if we do not read the producer, we can not apply | |
6717 | producer-specific interpretation. */ | |
95554aad | 6718 | prepare_one_comp_unit (cu, cu->dies, *language_ptr); |
dee91e82 | 6719 | } |
10b3939b | 6720 | |
dee91e82 | 6721 | /* Load the DIEs associated with PER_CU into memory. */ |
a6c727b2 | 6722 | |
dee91e82 | 6723 | static void |
95554aad TT |
6724 | load_full_comp_unit (struct dwarf2_per_cu_data *this_cu, |
6725 | enum language pretend_language) | |
dee91e82 | 6726 | { |
3019eac3 | 6727 | gdb_assert (! this_cu->is_debug_types); |
c5b7e1cb | 6728 | |
f4dc4d17 DE |
6729 | init_cutu_and_read_dies (this_cu, NULL, 1, 1, |
6730 | load_full_comp_unit_reader, &pretend_language); | |
10b3939b DJ |
6731 | } |
6732 | ||
3da10d80 KS |
6733 | /* Add a DIE to the delayed physname list. */ |
6734 | ||
6735 | static void | |
6736 | add_to_method_list (struct type *type, int fnfield_index, int index, | |
6737 | const char *name, struct die_info *die, | |
6738 | struct dwarf2_cu *cu) | |
6739 | { | |
6740 | struct delayed_method_info mi; | |
6741 | mi.type = type; | |
6742 | mi.fnfield_index = fnfield_index; | |
6743 | mi.index = index; | |
6744 | mi.name = name; | |
6745 | mi.die = die; | |
6746 | VEC_safe_push (delayed_method_info, cu->method_list, &mi); | |
6747 | } | |
6748 | ||
6749 | /* A cleanup for freeing the delayed method list. */ | |
6750 | ||
6751 | static void | |
6752 | free_delayed_list (void *ptr) | |
6753 | { | |
6754 | struct dwarf2_cu *cu = (struct dwarf2_cu *) ptr; | |
6755 | if (cu->method_list != NULL) | |
6756 | { | |
6757 | VEC_free (delayed_method_info, cu->method_list); | |
6758 | cu->method_list = NULL; | |
6759 | } | |
6760 | } | |
6761 | ||
6762 | /* Compute the physnames of any methods on the CU's method list. | |
6763 | ||
6764 | The computation of method physnames is delayed in order to avoid the | |
6765 | (bad) condition that one of the method's formal parameters is of an as yet | |
6766 | incomplete type. */ | |
6767 | ||
6768 | static void | |
6769 | compute_delayed_physnames (struct dwarf2_cu *cu) | |
6770 | { | |
6771 | int i; | |
6772 | struct delayed_method_info *mi; | |
6773 | for (i = 0; VEC_iterate (delayed_method_info, cu->method_list, i, mi) ; ++i) | |
6774 | { | |
1d06ead6 | 6775 | const char *physname; |
3da10d80 KS |
6776 | struct fn_fieldlist *fn_flp |
6777 | = &TYPE_FN_FIELDLIST (mi->type, mi->fnfield_index); | |
7d455152 | 6778 | physname = dwarf2_physname (mi->name, mi->die, cu); |
3da10d80 KS |
6779 | fn_flp->fn_fields[mi->index].physname = physname ? physname : ""; |
6780 | } | |
6781 | } | |
6782 | ||
a766d390 DE |
6783 | /* Go objects should be embedded in a DW_TAG_module DIE, |
6784 | and it's not clear if/how imported objects will appear. | |
6785 | To keep Go support simple until that's worked out, | |
6786 | go back through what we've read and create something usable. | |
6787 | We could do this while processing each DIE, and feels kinda cleaner, | |
6788 | but that way is more invasive. | |
6789 | This is to, for example, allow the user to type "p var" or "b main" | |
6790 | without having to specify the package name, and allow lookups | |
6791 | of module.object to work in contexts that use the expression | |
6792 | parser. */ | |
6793 | ||
6794 | static void | |
6795 | fixup_go_packaging (struct dwarf2_cu *cu) | |
6796 | { | |
6797 | char *package_name = NULL; | |
6798 | struct pending *list; | |
6799 | int i; | |
6800 | ||
6801 | for (list = global_symbols; list != NULL; list = list->next) | |
6802 | { | |
6803 | for (i = 0; i < list->nsyms; ++i) | |
6804 | { | |
6805 | struct symbol *sym = list->symbol[i]; | |
6806 | ||
6807 | if (SYMBOL_LANGUAGE (sym) == language_go | |
6808 | && SYMBOL_CLASS (sym) == LOC_BLOCK) | |
6809 | { | |
6810 | char *this_package_name = go_symbol_package_name (sym); | |
6811 | ||
6812 | if (this_package_name == NULL) | |
6813 | continue; | |
6814 | if (package_name == NULL) | |
6815 | package_name = this_package_name; | |
6816 | else | |
6817 | { | |
6818 | if (strcmp (package_name, this_package_name) != 0) | |
6819 | complaint (&symfile_complaints, | |
6820 | _("Symtab %s has objects from two different Go packages: %s and %s"), | |
210bbc17 | 6821 | (SYMBOL_SYMTAB (sym) |
05cba821 | 6822 | ? symtab_to_filename_for_display (SYMBOL_SYMTAB (sym)) |
a766d390 DE |
6823 | : cu->objfile->name), |
6824 | this_package_name, package_name); | |
6825 | xfree (this_package_name); | |
6826 | } | |
6827 | } | |
6828 | } | |
6829 | } | |
6830 | ||
6831 | if (package_name != NULL) | |
6832 | { | |
6833 | struct objfile *objfile = cu->objfile; | |
10f0c4bb TT |
6834 | const char *saved_package_name = obstack_copy0 (&objfile->objfile_obstack, |
6835 | package_name, | |
6836 | strlen (package_name)); | |
a766d390 | 6837 | struct type *type = init_type (TYPE_CODE_MODULE, 0, 0, |
86f62fd7 | 6838 | saved_package_name, objfile); |
a766d390 DE |
6839 | struct symbol *sym; |
6840 | ||
6841 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
6842 | ||
6843 | sym = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct symbol); | |
6844 | SYMBOL_SET_LANGUAGE (sym, language_go); | |
86f62fd7 TT |
6845 | SYMBOL_SET_NAMES (sym, saved_package_name, |
6846 | strlen (saved_package_name), 0, objfile); | |
a766d390 DE |
6847 | /* This is not VAR_DOMAIN because we want a way to ensure a lookup of, |
6848 | e.g., "main" finds the "main" module and not C's main(). */ | |
6849 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; | |
6850 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
6851 | SYMBOL_TYPE (sym) = type; | |
6852 | ||
6853 | add_symbol_to_list (sym, &global_symbols); | |
6854 | ||
6855 | xfree (package_name); | |
6856 | } | |
6857 | } | |
6858 | ||
95554aad TT |
6859 | static void compute_symtab_includes (struct dwarf2_per_cu_data *per_cu); |
6860 | ||
6861 | /* Return the symtab for PER_CU. This works properly regardless of | |
6862 | whether we're using the index or psymtabs. */ | |
6863 | ||
6864 | static struct symtab * | |
6865 | get_symtab (struct dwarf2_per_cu_data *per_cu) | |
6866 | { | |
6867 | return (dwarf2_per_objfile->using_index | |
6868 | ? per_cu->v.quick->symtab | |
6869 | : per_cu->v.psymtab->symtab); | |
6870 | } | |
6871 | ||
6872 | /* A helper function for computing the list of all symbol tables | |
6873 | included by PER_CU. */ | |
6874 | ||
6875 | static void | |
6876 | recursively_compute_inclusions (VEC (dwarf2_per_cu_ptr) **result, | |
6877 | htab_t all_children, | |
6878 | struct dwarf2_per_cu_data *per_cu) | |
6879 | { | |
6880 | void **slot; | |
6881 | int ix; | |
6882 | struct dwarf2_per_cu_data *iter; | |
6883 | ||
6884 | slot = htab_find_slot (all_children, per_cu, INSERT); | |
6885 | if (*slot != NULL) | |
6886 | { | |
6887 | /* This inclusion and its children have been processed. */ | |
6888 | return; | |
6889 | } | |
6890 | ||
6891 | *slot = per_cu; | |
6892 | /* Only add a CU if it has a symbol table. */ | |
6893 | if (get_symtab (per_cu) != NULL) | |
6894 | VEC_safe_push (dwarf2_per_cu_ptr, *result, per_cu); | |
6895 | ||
6896 | for (ix = 0; | |
796a7ff8 | 6897 | VEC_iterate (dwarf2_per_cu_ptr, per_cu->imported_symtabs, ix, iter); |
95554aad TT |
6898 | ++ix) |
6899 | recursively_compute_inclusions (result, all_children, iter); | |
6900 | } | |
6901 | ||
6902 | /* Compute the symtab 'includes' fields for the symtab related to | |
6903 | PER_CU. */ | |
6904 | ||
6905 | static void | |
6906 | compute_symtab_includes (struct dwarf2_per_cu_data *per_cu) | |
6907 | { | |
f4dc4d17 DE |
6908 | gdb_assert (! per_cu->is_debug_types); |
6909 | ||
796a7ff8 | 6910 | if (!VEC_empty (dwarf2_per_cu_ptr, per_cu->imported_symtabs)) |
95554aad TT |
6911 | { |
6912 | int ix, len; | |
6913 | struct dwarf2_per_cu_data *iter; | |
6914 | VEC (dwarf2_per_cu_ptr) *result_children = NULL; | |
6915 | htab_t all_children; | |
6916 | struct symtab *symtab = get_symtab (per_cu); | |
6917 | ||
6918 | /* If we don't have a symtab, we can just skip this case. */ | |
6919 | if (symtab == NULL) | |
6920 | return; | |
6921 | ||
6922 | all_children = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, | |
6923 | NULL, xcalloc, xfree); | |
6924 | ||
6925 | for (ix = 0; | |
796a7ff8 | 6926 | VEC_iterate (dwarf2_per_cu_ptr, per_cu->imported_symtabs, |
95554aad TT |
6927 | ix, iter); |
6928 | ++ix) | |
6929 | recursively_compute_inclusions (&result_children, all_children, iter); | |
6930 | ||
796a7ff8 DE |
6931 | /* Now we have a transitive closure of all the included CUs, and |
6932 | for .gdb_index version 7 the included TUs, so we can convert it | |
6933 | to a list of symtabs. */ | |
95554aad TT |
6934 | len = VEC_length (dwarf2_per_cu_ptr, result_children); |
6935 | symtab->includes | |
6936 | = obstack_alloc (&dwarf2_per_objfile->objfile->objfile_obstack, | |
6937 | (len + 1) * sizeof (struct symtab *)); | |
6938 | for (ix = 0; | |
6939 | VEC_iterate (dwarf2_per_cu_ptr, result_children, ix, iter); | |
6940 | ++ix) | |
6941 | symtab->includes[ix] = get_symtab (iter); | |
6942 | symtab->includes[len] = NULL; | |
6943 | ||
6944 | VEC_free (dwarf2_per_cu_ptr, result_children); | |
6945 | htab_delete (all_children); | |
6946 | } | |
6947 | } | |
6948 | ||
6949 | /* Compute the 'includes' field for the symtabs of all the CUs we just | |
6950 | read. */ | |
6951 | ||
6952 | static void | |
6953 | process_cu_includes (void) | |
6954 | { | |
6955 | int ix; | |
6956 | struct dwarf2_per_cu_data *iter; | |
6957 | ||
6958 | for (ix = 0; | |
6959 | VEC_iterate (dwarf2_per_cu_ptr, dwarf2_per_objfile->just_read_cus, | |
6960 | ix, iter); | |
6961 | ++ix) | |
f4dc4d17 DE |
6962 | { |
6963 | if (! iter->is_debug_types) | |
6964 | compute_symtab_includes (iter); | |
6965 | } | |
95554aad TT |
6966 | |
6967 | VEC_free (dwarf2_per_cu_ptr, dwarf2_per_objfile->just_read_cus); | |
6968 | } | |
6969 | ||
9cdd5dbd | 6970 | /* Generate full symbol information for PER_CU, whose DIEs have |
10b3939b DJ |
6971 | already been loaded into memory. */ |
6972 | ||
6973 | static void | |
95554aad TT |
6974 | process_full_comp_unit (struct dwarf2_per_cu_data *per_cu, |
6975 | enum language pretend_language) | |
10b3939b | 6976 | { |
10b3939b | 6977 | struct dwarf2_cu *cu = per_cu->cu; |
9291a0cd | 6978 | struct objfile *objfile = per_cu->objfile; |
10b3939b DJ |
6979 | CORE_ADDR lowpc, highpc; |
6980 | struct symtab *symtab; | |
3da10d80 | 6981 | struct cleanup *back_to, *delayed_list_cleanup; |
10b3939b | 6982 | CORE_ADDR baseaddr; |
4359dff1 | 6983 | struct block *static_block; |
10b3939b DJ |
6984 | |
6985 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
6986 | ||
10b3939b DJ |
6987 | buildsym_init (); |
6988 | back_to = make_cleanup (really_free_pendings, NULL); | |
3da10d80 | 6989 | delayed_list_cleanup = make_cleanup (free_delayed_list, cu); |
10b3939b DJ |
6990 | |
6991 | cu->list_in_scope = &file_symbols; | |
c906108c | 6992 | |
95554aad TT |
6993 | cu->language = pretend_language; |
6994 | cu->language_defn = language_def (cu->language); | |
6995 | ||
c906108c | 6996 | /* Do line number decoding in read_file_scope () */ |
10b3939b | 6997 | process_die (cu->dies, cu); |
c906108c | 6998 | |
a766d390 DE |
6999 | /* For now fudge the Go package. */ |
7000 | if (cu->language == language_go) | |
7001 | fixup_go_packaging (cu); | |
7002 | ||
3da10d80 KS |
7003 | /* Now that we have processed all the DIEs in the CU, all the types |
7004 | should be complete, and it should now be safe to compute all of the | |
7005 | physnames. */ | |
7006 | compute_delayed_physnames (cu); | |
7007 | do_cleanups (delayed_list_cleanup); | |
7008 | ||
fae299cd DC |
7009 | /* Some compilers don't define a DW_AT_high_pc attribute for the |
7010 | compilation unit. If the DW_AT_high_pc is missing, synthesize | |
7011 | it, by scanning the DIE's below the compilation unit. */ | |
10b3939b | 7012 | get_scope_pc_bounds (cu->dies, &lowpc, &highpc, cu); |
c906108c | 7013 | |
36586728 TT |
7014 | static_block |
7015 | = end_symtab_get_static_block (highpc + baseaddr, objfile, 0, | |
796a7ff8 | 7016 | per_cu->imported_symtabs != NULL); |
4359dff1 JK |
7017 | |
7018 | /* If the comp unit has DW_AT_ranges, it may have discontiguous ranges. | |
7019 | Also, DW_AT_ranges may record ranges not belonging to any child DIEs | |
7020 | (such as virtual method tables). Record the ranges in STATIC_BLOCK's | |
7021 | addrmap to help ensure it has an accurate map of pc values belonging to | |
7022 | this comp unit. */ | |
7023 | dwarf2_record_block_ranges (cu->dies, static_block, baseaddr, cu); | |
7024 | ||
7025 | symtab = end_symtab_from_static_block (static_block, objfile, | |
7026 | SECT_OFF_TEXT (objfile), 0); | |
c906108c | 7027 | |
8be455d7 | 7028 | if (symtab != NULL) |
c906108c | 7029 | { |
df15bd07 | 7030 | int gcc_4_minor = producer_is_gcc_ge_4 (cu->producer); |
4632c0d0 | 7031 | |
8be455d7 JK |
7032 | /* Set symtab language to language from DW_AT_language. If the |
7033 | compilation is from a C file generated by language preprocessors, do | |
7034 | not set the language if it was already deduced by start_subfile. */ | |
7035 | if (!(cu->language == language_c && symtab->language != language_c)) | |
7036 | symtab->language = cu->language; | |
7037 | ||
7038 | /* GCC-4.0 has started to support -fvar-tracking. GCC-3.x still can | |
7039 | produce DW_AT_location with location lists but it can be possibly | |
ab260dad JK |
7040 | invalid without -fvar-tracking. Still up to GCC-4.4.x incl. 4.4.0 |
7041 | there were bugs in prologue debug info, fixed later in GCC-4.5 | |
7042 | by "unwind info for epilogues" patch (which is not directly related). | |
8be455d7 JK |
7043 | |
7044 | For -gdwarf-4 type units LOCATIONS_VALID indication is fortunately not | |
7045 | needed, it would be wrong due to missing DW_AT_producer there. | |
7046 | ||
7047 | Still one can confuse GDB by using non-standard GCC compilation | |
7048 | options - this waits on GCC PR other/32998 (-frecord-gcc-switches). | |
7049 | */ | |
ab260dad | 7050 | if (cu->has_loclist && gcc_4_minor >= 5) |
8be455d7 | 7051 | symtab->locations_valid = 1; |
e0d00bc7 JK |
7052 | |
7053 | if (gcc_4_minor >= 5) | |
7054 | symtab->epilogue_unwind_valid = 1; | |
96408a79 SA |
7055 | |
7056 | symtab->call_site_htab = cu->call_site_htab; | |
c906108c | 7057 | } |
9291a0cd TT |
7058 | |
7059 | if (dwarf2_per_objfile->using_index) | |
7060 | per_cu->v.quick->symtab = symtab; | |
7061 | else | |
7062 | { | |
7063 | struct partial_symtab *pst = per_cu->v.psymtab; | |
7064 | pst->symtab = symtab; | |
7065 | pst->readin = 1; | |
7066 | } | |
c906108c | 7067 | |
95554aad TT |
7068 | /* Push it for inclusion processing later. */ |
7069 | VEC_safe_push (dwarf2_per_cu_ptr, dwarf2_per_objfile->just_read_cus, per_cu); | |
7070 | ||
c906108c | 7071 | do_cleanups (back_to); |
f4dc4d17 | 7072 | } |
45cfd468 | 7073 | |
f4dc4d17 DE |
7074 | /* Generate full symbol information for type unit PER_CU, whose DIEs have |
7075 | already been loaded into memory. */ | |
7076 | ||
7077 | static void | |
7078 | process_full_type_unit (struct dwarf2_per_cu_data *per_cu, | |
7079 | enum language pretend_language) | |
7080 | { | |
7081 | struct dwarf2_cu *cu = per_cu->cu; | |
7082 | struct objfile *objfile = per_cu->objfile; | |
7083 | struct symtab *symtab; | |
7084 | struct cleanup *back_to, *delayed_list_cleanup; | |
7085 | ||
7086 | buildsym_init (); | |
7087 | back_to = make_cleanup (really_free_pendings, NULL); | |
7088 | delayed_list_cleanup = make_cleanup (free_delayed_list, cu); | |
7089 | ||
7090 | cu->list_in_scope = &file_symbols; | |
7091 | ||
7092 | cu->language = pretend_language; | |
7093 | cu->language_defn = language_def (cu->language); | |
7094 | ||
7095 | /* The symbol tables are set up in read_type_unit_scope. */ | |
7096 | process_die (cu->dies, cu); | |
7097 | ||
7098 | /* For now fudge the Go package. */ | |
7099 | if (cu->language == language_go) | |
7100 | fixup_go_packaging (cu); | |
7101 | ||
7102 | /* Now that we have processed all the DIEs in the CU, all the types | |
7103 | should be complete, and it should now be safe to compute all of the | |
7104 | physnames. */ | |
7105 | compute_delayed_physnames (cu); | |
7106 | do_cleanups (delayed_list_cleanup); | |
7107 | ||
7108 | /* TUs share symbol tables. | |
7109 | If this is the first TU to use this symtab, complete the construction | |
094b34ac DE |
7110 | of it with end_expandable_symtab. Otherwise, complete the addition of |
7111 | this TU's symbols to the existing symtab. */ | |
796a7ff8 | 7112 | if (per_cu->type_unit_group->primary_symtab == NULL) |
45cfd468 | 7113 | { |
f4dc4d17 | 7114 | symtab = end_expandable_symtab (0, objfile, SECT_OFF_TEXT (objfile)); |
796a7ff8 | 7115 | per_cu->type_unit_group->primary_symtab = symtab; |
f4dc4d17 DE |
7116 | |
7117 | if (symtab != NULL) | |
7118 | { | |
7119 | /* Set symtab language to language from DW_AT_language. If the | |
7120 | compilation is from a C file generated by language preprocessors, | |
7121 | do not set the language if it was already deduced by | |
7122 | start_subfile. */ | |
7123 | if (!(cu->language == language_c && symtab->language != language_c)) | |
7124 | symtab->language = cu->language; | |
7125 | } | |
7126 | } | |
7127 | else | |
7128 | { | |
7129 | augment_type_symtab (objfile, | |
796a7ff8 DE |
7130 | per_cu->type_unit_group->primary_symtab); |
7131 | symtab = per_cu->type_unit_group->primary_symtab; | |
f4dc4d17 DE |
7132 | } |
7133 | ||
7134 | if (dwarf2_per_objfile->using_index) | |
7135 | per_cu->v.quick->symtab = symtab; | |
7136 | else | |
7137 | { | |
7138 | struct partial_symtab *pst = per_cu->v.psymtab; | |
7139 | pst->symtab = symtab; | |
7140 | pst->readin = 1; | |
45cfd468 | 7141 | } |
f4dc4d17 DE |
7142 | |
7143 | do_cleanups (back_to); | |
c906108c SS |
7144 | } |
7145 | ||
95554aad TT |
7146 | /* Process an imported unit DIE. */ |
7147 | ||
7148 | static void | |
7149 | process_imported_unit_die (struct die_info *die, struct dwarf2_cu *cu) | |
7150 | { | |
7151 | struct attribute *attr; | |
7152 | ||
f4dc4d17 DE |
7153 | /* For now we don't handle imported units in type units. */ |
7154 | if (cu->per_cu->is_debug_types) | |
7155 | { | |
7156 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
7157 | " supported in type units [in module %s]"), | |
7158 | cu->objfile->name); | |
7159 | } | |
7160 | ||
95554aad TT |
7161 | attr = dwarf2_attr (die, DW_AT_import, cu); |
7162 | if (attr != NULL) | |
7163 | { | |
7164 | struct dwarf2_per_cu_data *per_cu; | |
7165 | struct symtab *imported_symtab; | |
7166 | sect_offset offset; | |
36586728 | 7167 | int is_dwz; |
95554aad TT |
7168 | |
7169 | offset = dwarf2_get_ref_die_offset (attr); | |
36586728 TT |
7170 | is_dwz = (attr->form == DW_FORM_GNU_ref_alt || cu->per_cu->is_dwz); |
7171 | per_cu = dwarf2_find_containing_comp_unit (offset, is_dwz, cu->objfile); | |
95554aad TT |
7172 | |
7173 | /* Queue the unit, if needed. */ | |
7174 | if (maybe_queue_comp_unit (cu, per_cu, cu->language)) | |
7175 | load_full_comp_unit (per_cu, cu->language); | |
7176 | ||
796a7ff8 | 7177 | VEC_safe_push (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs, |
95554aad TT |
7178 | per_cu); |
7179 | } | |
7180 | } | |
7181 | ||
c906108c SS |
7182 | /* Process a die and its children. */ |
7183 | ||
7184 | static void | |
e7c27a73 | 7185 | process_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
7186 | { |
7187 | switch (die->tag) | |
7188 | { | |
7189 | case DW_TAG_padding: | |
7190 | break; | |
7191 | case DW_TAG_compile_unit: | |
95554aad | 7192 | case DW_TAG_partial_unit: |
e7c27a73 | 7193 | read_file_scope (die, cu); |
c906108c | 7194 | break; |
348e048f DE |
7195 | case DW_TAG_type_unit: |
7196 | read_type_unit_scope (die, cu); | |
7197 | break; | |
c906108c | 7198 | case DW_TAG_subprogram: |
c906108c | 7199 | case DW_TAG_inlined_subroutine: |
edb3359d | 7200 | read_func_scope (die, cu); |
c906108c SS |
7201 | break; |
7202 | case DW_TAG_lexical_block: | |
14898363 L |
7203 | case DW_TAG_try_block: |
7204 | case DW_TAG_catch_block: | |
e7c27a73 | 7205 | read_lexical_block_scope (die, cu); |
c906108c | 7206 | break; |
96408a79 SA |
7207 | case DW_TAG_GNU_call_site: |
7208 | read_call_site_scope (die, cu); | |
7209 | break; | |
c906108c | 7210 | case DW_TAG_class_type: |
680b30c7 | 7211 | case DW_TAG_interface_type: |
c906108c SS |
7212 | case DW_TAG_structure_type: |
7213 | case DW_TAG_union_type: | |
134d01f1 | 7214 | process_structure_scope (die, cu); |
c906108c SS |
7215 | break; |
7216 | case DW_TAG_enumeration_type: | |
134d01f1 | 7217 | process_enumeration_scope (die, cu); |
c906108c | 7218 | break; |
134d01f1 | 7219 | |
f792889a DJ |
7220 | /* These dies have a type, but processing them does not create |
7221 | a symbol or recurse to process the children. Therefore we can | |
7222 | read them on-demand through read_type_die. */ | |
c906108c | 7223 | case DW_TAG_subroutine_type: |
72019c9c | 7224 | case DW_TAG_set_type: |
c906108c | 7225 | case DW_TAG_array_type: |
c906108c | 7226 | case DW_TAG_pointer_type: |
c906108c | 7227 | case DW_TAG_ptr_to_member_type: |
c906108c | 7228 | case DW_TAG_reference_type: |
c906108c | 7229 | case DW_TAG_string_type: |
c906108c | 7230 | break; |
134d01f1 | 7231 | |
c906108c | 7232 | case DW_TAG_base_type: |
a02abb62 | 7233 | case DW_TAG_subrange_type: |
cb249c71 | 7234 | case DW_TAG_typedef: |
134d01f1 DJ |
7235 | /* Add a typedef symbol for the type definition, if it has a |
7236 | DW_AT_name. */ | |
f792889a | 7237 | new_symbol (die, read_type_die (die, cu), cu); |
a02abb62 | 7238 | break; |
c906108c | 7239 | case DW_TAG_common_block: |
e7c27a73 | 7240 | read_common_block (die, cu); |
c906108c SS |
7241 | break; |
7242 | case DW_TAG_common_inclusion: | |
7243 | break; | |
d9fa45fe | 7244 | case DW_TAG_namespace: |
4d4ec4e5 | 7245 | cu->processing_has_namespace_info = 1; |
e7c27a73 | 7246 | read_namespace (die, cu); |
d9fa45fe | 7247 | break; |
5d7cb8df | 7248 | case DW_TAG_module: |
4d4ec4e5 | 7249 | cu->processing_has_namespace_info = 1; |
5d7cb8df JK |
7250 | read_module (die, cu); |
7251 | break; | |
d9fa45fe DC |
7252 | case DW_TAG_imported_declaration: |
7253 | case DW_TAG_imported_module: | |
4d4ec4e5 | 7254 | cu->processing_has_namespace_info = 1; |
27aa8d6a SW |
7255 | if (die->child != NULL && (die->tag == DW_TAG_imported_declaration |
7256 | || cu->language != language_fortran)) | |
7257 | complaint (&symfile_complaints, _("Tag '%s' has unexpected children"), | |
7258 | dwarf_tag_name (die->tag)); | |
7259 | read_import_statement (die, cu); | |
d9fa45fe | 7260 | break; |
95554aad TT |
7261 | |
7262 | case DW_TAG_imported_unit: | |
7263 | process_imported_unit_die (die, cu); | |
7264 | break; | |
7265 | ||
c906108c | 7266 | default: |
e7c27a73 | 7267 | new_symbol (die, NULL, cu); |
c906108c SS |
7268 | break; |
7269 | } | |
7270 | } | |
7271 | ||
94af9270 KS |
7272 | /* A helper function for dwarf2_compute_name which determines whether DIE |
7273 | needs to have the name of the scope prepended to the name listed in the | |
7274 | die. */ | |
7275 | ||
7276 | static int | |
7277 | die_needs_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
7278 | { | |
1c809c68 TT |
7279 | struct attribute *attr; |
7280 | ||
94af9270 KS |
7281 | switch (die->tag) |
7282 | { | |
7283 | case DW_TAG_namespace: | |
7284 | case DW_TAG_typedef: | |
7285 | case DW_TAG_class_type: | |
7286 | case DW_TAG_interface_type: | |
7287 | case DW_TAG_structure_type: | |
7288 | case DW_TAG_union_type: | |
7289 | case DW_TAG_enumeration_type: | |
7290 | case DW_TAG_enumerator: | |
7291 | case DW_TAG_subprogram: | |
7292 | case DW_TAG_member: | |
7293 | return 1; | |
7294 | ||
7295 | case DW_TAG_variable: | |
c2b0a229 | 7296 | case DW_TAG_constant: |
94af9270 KS |
7297 | /* We only need to prefix "globally" visible variables. These include |
7298 | any variable marked with DW_AT_external or any variable that | |
7299 | lives in a namespace. [Variables in anonymous namespaces | |
7300 | require prefixing, but they are not DW_AT_external.] */ | |
7301 | ||
7302 | if (dwarf2_attr (die, DW_AT_specification, cu)) | |
7303 | { | |
7304 | struct dwarf2_cu *spec_cu = cu; | |
9a619af0 | 7305 | |
94af9270 KS |
7306 | return die_needs_namespace (die_specification (die, &spec_cu), |
7307 | spec_cu); | |
7308 | } | |
7309 | ||
1c809c68 | 7310 | attr = dwarf2_attr (die, DW_AT_external, cu); |
f55ee35c JK |
7311 | if (attr == NULL && die->parent->tag != DW_TAG_namespace |
7312 | && die->parent->tag != DW_TAG_module) | |
1c809c68 TT |
7313 | return 0; |
7314 | /* A variable in a lexical block of some kind does not need a | |
7315 | namespace, even though in C++ such variables may be external | |
7316 | and have a mangled name. */ | |
7317 | if (die->parent->tag == DW_TAG_lexical_block | |
7318 | || die->parent->tag == DW_TAG_try_block | |
1054b214 TT |
7319 | || die->parent->tag == DW_TAG_catch_block |
7320 | || die->parent->tag == DW_TAG_subprogram) | |
1c809c68 TT |
7321 | return 0; |
7322 | return 1; | |
94af9270 KS |
7323 | |
7324 | default: | |
7325 | return 0; | |
7326 | } | |
7327 | } | |
7328 | ||
98bfdba5 PA |
7329 | /* Retrieve the last character from a mem_file. */ |
7330 | ||
7331 | static void | |
7332 | do_ui_file_peek_last (void *object, const char *buffer, long length) | |
7333 | { | |
7334 | char *last_char_p = (char *) object; | |
7335 | ||
7336 | if (length > 0) | |
7337 | *last_char_p = buffer[length - 1]; | |
7338 | } | |
7339 | ||
94af9270 | 7340 | /* Compute the fully qualified name of DIE in CU. If PHYSNAME is nonzero, |
a766d390 DE |
7341 | compute the physname for the object, which include a method's: |
7342 | - formal parameters (C++/Java), | |
7343 | - receiver type (Go), | |
7344 | - return type (Java). | |
7345 | ||
7346 | The term "physname" is a bit confusing. | |
7347 | For C++, for example, it is the demangled name. | |
7348 | For Go, for example, it's the mangled name. | |
94af9270 | 7349 | |
af6b7be1 JB |
7350 | For Ada, return the DIE's linkage name rather than the fully qualified |
7351 | name. PHYSNAME is ignored.. | |
7352 | ||
94af9270 KS |
7353 | The result is allocated on the objfile_obstack and canonicalized. */ |
7354 | ||
7355 | static const char * | |
15d034d0 TT |
7356 | dwarf2_compute_name (const char *name, |
7357 | struct die_info *die, struct dwarf2_cu *cu, | |
94af9270 KS |
7358 | int physname) |
7359 | { | |
bb5ed363 DE |
7360 | struct objfile *objfile = cu->objfile; |
7361 | ||
94af9270 KS |
7362 | if (name == NULL) |
7363 | name = dwarf2_name (die, cu); | |
7364 | ||
f55ee35c JK |
7365 | /* For Fortran GDB prefers DW_AT_*linkage_name if present but otherwise |
7366 | compute it by typename_concat inside GDB. */ | |
7367 | if (cu->language == language_ada | |
7368 | || (cu->language == language_fortran && physname)) | |
7369 | { | |
7370 | /* For Ada unit, we prefer the linkage name over the name, as | |
7371 | the former contains the exported name, which the user expects | |
7372 | to be able to reference. Ideally, we want the user to be able | |
7373 | to reference this entity using either natural or linkage name, | |
7374 | but we haven't started looking at this enhancement yet. */ | |
7375 | struct attribute *attr; | |
7376 | ||
7377 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
7378 | if (attr == NULL) | |
7379 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
7380 | if (attr && DW_STRING (attr)) | |
7381 | return DW_STRING (attr); | |
7382 | } | |
7383 | ||
94af9270 KS |
7384 | /* These are the only languages we know how to qualify names in. */ |
7385 | if (name != NULL | |
f55ee35c JK |
7386 | && (cu->language == language_cplus || cu->language == language_java |
7387 | || cu->language == language_fortran)) | |
94af9270 KS |
7388 | { |
7389 | if (die_needs_namespace (die, cu)) | |
7390 | { | |
7391 | long length; | |
0d5cff50 | 7392 | const char *prefix; |
94af9270 KS |
7393 | struct ui_file *buf; |
7394 | ||
7395 | prefix = determine_prefix (die, cu); | |
7396 | buf = mem_fileopen (); | |
7397 | if (*prefix != '\0') | |
7398 | { | |
f55ee35c JK |
7399 | char *prefixed_name = typename_concat (NULL, prefix, name, |
7400 | physname, cu); | |
9a619af0 | 7401 | |
94af9270 KS |
7402 | fputs_unfiltered (prefixed_name, buf); |
7403 | xfree (prefixed_name); | |
7404 | } | |
7405 | else | |
62d5b8da | 7406 | fputs_unfiltered (name, buf); |
94af9270 | 7407 | |
98bfdba5 PA |
7408 | /* Template parameters may be specified in the DIE's DW_AT_name, or |
7409 | as children with DW_TAG_template_type_param or | |
7410 | DW_TAG_value_type_param. If the latter, add them to the name | |
7411 | here. If the name already has template parameters, then | |
7412 | skip this step; some versions of GCC emit both, and | |
7413 | it is more efficient to use the pre-computed name. | |
7414 | ||
7415 | Something to keep in mind about this process: it is very | |
7416 | unlikely, or in some cases downright impossible, to produce | |
7417 | something that will match the mangled name of a function. | |
7418 | If the definition of the function has the same debug info, | |
7419 | we should be able to match up with it anyway. But fallbacks | |
7420 | using the minimal symbol, for instance to find a method | |
7421 | implemented in a stripped copy of libstdc++, will not work. | |
7422 | If we do not have debug info for the definition, we will have to | |
7423 | match them up some other way. | |
7424 | ||
7425 | When we do name matching there is a related problem with function | |
7426 | templates; two instantiated function templates are allowed to | |
7427 | differ only by their return types, which we do not add here. */ | |
7428 | ||
7429 | if (cu->language == language_cplus && strchr (name, '<') == NULL) | |
7430 | { | |
7431 | struct attribute *attr; | |
7432 | struct die_info *child; | |
7433 | int first = 1; | |
7434 | ||
7435 | die->building_fullname = 1; | |
7436 | ||
7437 | for (child = die->child; child != NULL; child = child->sibling) | |
7438 | { | |
7439 | struct type *type; | |
12df843f | 7440 | LONGEST value; |
98bfdba5 PA |
7441 | gdb_byte *bytes; |
7442 | struct dwarf2_locexpr_baton *baton; | |
7443 | struct value *v; | |
7444 | ||
7445 | if (child->tag != DW_TAG_template_type_param | |
7446 | && child->tag != DW_TAG_template_value_param) | |
7447 | continue; | |
7448 | ||
7449 | if (first) | |
7450 | { | |
7451 | fputs_unfiltered ("<", buf); | |
7452 | first = 0; | |
7453 | } | |
7454 | else | |
7455 | fputs_unfiltered (", ", buf); | |
7456 | ||
7457 | attr = dwarf2_attr (child, DW_AT_type, cu); | |
7458 | if (attr == NULL) | |
7459 | { | |
7460 | complaint (&symfile_complaints, | |
7461 | _("template parameter missing DW_AT_type")); | |
7462 | fputs_unfiltered ("UNKNOWN_TYPE", buf); | |
7463 | continue; | |
7464 | } | |
7465 | type = die_type (child, cu); | |
7466 | ||
7467 | if (child->tag == DW_TAG_template_type_param) | |
7468 | { | |
79d43c61 | 7469 | c_print_type (type, "", buf, -1, 0, &type_print_raw_options); |
98bfdba5 PA |
7470 | continue; |
7471 | } | |
7472 | ||
7473 | attr = dwarf2_attr (child, DW_AT_const_value, cu); | |
7474 | if (attr == NULL) | |
7475 | { | |
7476 | complaint (&symfile_complaints, | |
3e43a32a MS |
7477 | _("template parameter missing " |
7478 | "DW_AT_const_value")); | |
98bfdba5 PA |
7479 | fputs_unfiltered ("UNKNOWN_VALUE", buf); |
7480 | continue; | |
7481 | } | |
7482 | ||
7483 | dwarf2_const_value_attr (attr, type, name, | |
7484 | &cu->comp_unit_obstack, cu, | |
7485 | &value, &bytes, &baton); | |
7486 | ||
7487 | if (TYPE_NOSIGN (type)) | |
7488 | /* GDB prints characters as NUMBER 'CHAR'. If that's | |
7489 | changed, this can use value_print instead. */ | |
7490 | c_printchar (value, type, buf); | |
7491 | else | |
7492 | { | |
7493 | struct value_print_options opts; | |
7494 | ||
7495 | if (baton != NULL) | |
7496 | v = dwarf2_evaluate_loc_desc (type, NULL, | |
7497 | baton->data, | |
7498 | baton->size, | |
7499 | baton->per_cu); | |
7500 | else if (bytes != NULL) | |
7501 | { | |
7502 | v = allocate_value (type); | |
7503 | memcpy (value_contents_writeable (v), bytes, | |
7504 | TYPE_LENGTH (type)); | |
7505 | } | |
7506 | else | |
7507 | v = value_from_longest (type, value); | |
7508 | ||
3e43a32a MS |
7509 | /* Specify decimal so that we do not depend on |
7510 | the radix. */ | |
98bfdba5 PA |
7511 | get_formatted_print_options (&opts, 'd'); |
7512 | opts.raw = 1; | |
7513 | value_print (v, buf, &opts); | |
7514 | release_value (v); | |
7515 | value_free (v); | |
7516 | } | |
7517 | } | |
7518 | ||
7519 | die->building_fullname = 0; | |
7520 | ||
7521 | if (!first) | |
7522 | { | |
7523 | /* Close the argument list, with a space if necessary | |
7524 | (nested templates). */ | |
7525 | char last_char = '\0'; | |
7526 | ui_file_put (buf, do_ui_file_peek_last, &last_char); | |
7527 | if (last_char == '>') | |
7528 | fputs_unfiltered (" >", buf); | |
7529 | else | |
7530 | fputs_unfiltered (">", buf); | |
7531 | } | |
7532 | } | |
7533 | ||
94af9270 KS |
7534 | /* For Java and C++ methods, append formal parameter type |
7535 | information, if PHYSNAME. */ | |
6e70227d | 7536 | |
94af9270 KS |
7537 | if (physname && die->tag == DW_TAG_subprogram |
7538 | && (cu->language == language_cplus | |
7539 | || cu->language == language_java)) | |
7540 | { | |
7541 | struct type *type = read_type_die (die, cu); | |
7542 | ||
79d43c61 TT |
7543 | c_type_print_args (type, buf, 1, cu->language, |
7544 | &type_print_raw_options); | |
94af9270 KS |
7545 | |
7546 | if (cu->language == language_java) | |
7547 | { | |
7548 | /* For java, we must append the return type to method | |
0963b4bd | 7549 | names. */ |
94af9270 KS |
7550 | if (die->tag == DW_TAG_subprogram) |
7551 | java_print_type (TYPE_TARGET_TYPE (type), "", buf, | |
79d43c61 | 7552 | 0, 0, &type_print_raw_options); |
94af9270 KS |
7553 | } |
7554 | else if (cu->language == language_cplus) | |
7555 | { | |
60430eff DJ |
7556 | /* Assume that an artificial first parameter is |
7557 | "this", but do not crash if it is not. RealView | |
7558 | marks unnamed (and thus unused) parameters as | |
7559 | artificial; there is no way to differentiate | |
7560 | the two cases. */ | |
94af9270 KS |
7561 | if (TYPE_NFIELDS (type) > 0 |
7562 | && TYPE_FIELD_ARTIFICIAL (type, 0) | |
60430eff | 7563 | && TYPE_CODE (TYPE_FIELD_TYPE (type, 0)) == TYPE_CODE_PTR |
3e43a32a MS |
7564 | && TYPE_CONST (TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, |
7565 | 0)))) | |
94af9270 KS |
7566 | fputs_unfiltered (" const", buf); |
7567 | } | |
7568 | } | |
7569 | ||
bb5ed363 | 7570 | name = ui_file_obsavestring (buf, &objfile->objfile_obstack, |
94af9270 KS |
7571 | &length); |
7572 | ui_file_delete (buf); | |
7573 | ||
7574 | if (cu->language == language_cplus) | |
7575 | { | |
15d034d0 | 7576 | const char *cname |
94af9270 | 7577 | = dwarf2_canonicalize_name (name, cu, |
bb5ed363 | 7578 | &objfile->objfile_obstack); |
9a619af0 | 7579 | |
94af9270 KS |
7580 | if (cname != NULL) |
7581 | name = cname; | |
7582 | } | |
7583 | } | |
7584 | } | |
7585 | ||
7586 | return name; | |
7587 | } | |
7588 | ||
0114d602 DJ |
7589 | /* Return the fully qualified name of DIE, based on its DW_AT_name. |
7590 | If scope qualifiers are appropriate they will be added. The result | |
7591 | will be allocated on the objfile_obstack, or NULL if the DIE does | |
94af9270 KS |
7592 | not have a name. NAME may either be from a previous call to |
7593 | dwarf2_name or NULL. | |
7594 | ||
0963b4bd | 7595 | The output string will be canonicalized (if C++/Java). */ |
0114d602 DJ |
7596 | |
7597 | static const char * | |
15d034d0 | 7598 | dwarf2_full_name (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
0114d602 | 7599 | { |
94af9270 KS |
7600 | return dwarf2_compute_name (name, die, cu, 0); |
7601 | } | |
0114d602 | 7602 | |
94af9270 KS |
7603 | /* Construct a physname for the given DIE in CU. NAME may either be |
7604 | from a previous call to dwarf2_name or NULL. The result will be | |
7605 | allocated on the objfile_objstack or NULL if the DIE does not have a | |
7606 | name. | |
0114d602 | 7607 | |
94af9270 | 7608 | The output string will be canonicalized (if C++/Java). */ |
0114d602 | 7609 | |
94af9270 | 7610 | static const char * |
15d034d0 | 7611 | dwarf2_physname (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
94af9270 | 7612 | { |
bb5ed363 | 7613 | struct objfile *objfile = cu->objfile; |
900e11f9 JK |
7614 | struct attribute *attr; |
7615 | const char *retval, *mangled = NULL, *canon = NULL; | |
7616 | struct cleanup *back_to; | |
7617 | int need_copy = 1; | |
7618 | ||
7619 | /* In this case dwarf2_compute_name is just a shortcut not building anything | |
7620 | on its own. */ | |
7621 | if (!die_needs_namespace (die, cu)) | |
7622 | return dwarf2_compute_name (name, die, cu, 1); | |
7623 | ||
7624 | back_to = make_cleanup (null_cleanup, NULL); | |
7625 | ||
7626 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
7627 | if (!attr) | |
7628 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
7629 | ||
7630 | /* DW_AT_linkage_name is missing in some cases - depend on what GDB | |
7631 | has computed. */ | |
7632 | if (attr && DW_STRING (attr)) | |
7633 | { | |
7634 | char *demangled; | |
7635 | ||
7636 | mangled = DW_STRING (attr); | |
7637 | ||
7638 | /* Use DMGL_RET_DROP for C++ template functions to suppress their return | |
7639 | type. It is easier for GDB users to search for such functions as | |
7640 | `name(params)' than `long name(params)'. In such case the minimal | |
7641 | symbol names do not match the full symbol names but for template | |
7642 | functions there is never a need to look up their definition from their | |
7643 | declaration so the only disadvantage remains the minimal symbol | |
7644 | variant `long name(params)' does not have the proper inferior type. | |
7645 | */ | |
7646 | ||
a766d390 DE |
7647 | if (cu->language == language_go) |
7648 | { | |
7649 | /* This is a lie, but we already lie to the caller new_symbol_full. | |
7650 | new_symbol_full assumes we return the mangled name. | |
7651 | This just undoes that lie until things are cleaned up. */ | |
7652 | demangled = NULL; | |
7653 | } | |
7654 | else | |
7655 | { | |
7656 | demangled = cplus_demangle (mangled, | |
7657 | (DMGL_PARAMS | DMGL_ANSI | |
7658 | | (cu->language == language_java | |
7659 | ? DMGL_JAVA | DMGL_RET_POSTFIX | |
7660 | : DMGL_RET_DROP))); | |
7661 | } | |
900e11f9 JK |
7662 | if (demangled) |
7663 | { | |
7664 | make_cleanup (xfree, demangled); | |
7665 | canon = demangled; | |
7666 | } | |
7667 | else | |
7668 | { | |
7669 | canon = mangled; | |
7670 | need_copy = 0; | |
7671 | } | |
7672 | } | |
7673 | ||
7674 | if (canon == NULL || check_physname) | |
7675 | { | |
7676 | const char *physname = dwarf2_compute_name (name, die, cu, 1); | |
7677 | ||
7678 | if (canon != NULL && strcmp (physname, canon) != 0) | |
7679 | { | |
7680 | /* It may not mean a bug in GDB. The compiler could also | |
7681 | compute DW_AT_linkage_name incorrectly. But in such case | |
7682 | GDB would need to be bug-to-bug compatible. */ | |
7683 | ||
7684 | complaint (&symfile_complaints, | |
7685 | _("Computed physname <%s> does not match demangled <%s> " | |
7686 | "(from linkage <%s>) - DIE at 0x%x [in module %s]"), | |
b64f50a1 | 7687 | physname, canon, mangled, die->offset.sect_off, objfile->name); |
900e11f9 JK |
7688 | |
7689 | /* Prefer DW_AT_linkage_name (in the CANON form) - when it | |
7690 | is available here - over computed PHYSNAME. It is safer | |
7691 | against both buggy GDB and buggy compilers. */ | |
7692 | ||
7693 | retval = canon; | |
7694 | } | |
7695 | else | |
7696 | { | |
7697 | retval = physname; | |
7698 | need_copy = 0; | |
7699 | } | |
7700 | } | |
7701 | else | |
7702 | retval = canon; | |
7703 | ||
7704 | if (need_copy) | |
10f0c4bb | 7705 | retval = obstack_copy0 (&objfile->objfile_obstack, retval, strlen (retval)); |
900e11f9 JK |
7706 | |
7707 | do_cleanups (back_to); | |
7708 | return retval; | |
0114d602 DJ |
7709 | } |
7710 | ||
27aa8d6a SW |
7711 | /* Read the import statement specified by the given die and record it. */ |
7712 | ||
7713 | static void | |
7714 | read_import_statement (struct die_info *die, struct dwarf2_cu *cu) | |
7715 | { | |
bb5ed363 | 7716 | struct objfile *objfile = cu->objfile; |
27aa8d6a | 7717 | struct attribute *import_attr; |
32019081 | 7718 | struct die_info *imported_die, *child_die; |
de4affc9 | 7719 | struct dwarf2_cu *imported_cu; |
27aa8d6a | 7720 | const char *imported_name; |
794684b6 | 7721 | const char *imported_name_prefix; |
13387711 SW |
7722 | const char *canonical_name; |
7723 | const char *import_alias; | |
7724 | const char *imported_declaration = NULL; | |
794684b6 | 7725 | const char *import_prefix; |
32019081 JK |
7726 | VEC (const_char_ptr) *excludes = NULL; |
7727 | struct cleanup *cleanups; | |
13387711 | 7728 | |
27aa8d6a SW |
7729 | import_attr = dwarf2_attr (die, DW_AT_import, cu); |
7730 | if (import_attr == NULL) | |
7731 | { | |
7732 | complaint (&symfile_complaints, _("Tag '%s' has no DW_AT_import"), | |
7733 | dwarf_tag_name (die->tag)); | |
7734 | return; | |
7735 | } | |
7736 | ||
de4affc9 CC |
7737 | imported_cu = cu; |
7738 | imported_die = follow_die_ref_or_sig (die, import_attr, &imported_cu); | |
7739 | imported_name = dwarf2_name (imported_die, imported_cu); | |
27aa8d6a SW |
7740 | if (imported_name == NULL) |
7741 | { | |
7742 | /* GCC bug: https://bugzilla.redhat.com/show_bug.cgi?id=506524 | |
7743 | ||
7744 | The import in the following code: | |
7745 | namespace A | |
7746 | { | |
7747 | typedef int B; | |
7748 | } | |
7749 | ||
7750 | int main () | |
7751 | { | |
7752 | using A::B; | |
7753 | B b; | |
7754 | return b; | |
7755 | } | |
7756 | ||
7757 | ... | |
7758 | <2><51>: Abbrev Number: 3 (DW_TAG_imported_declaration) | |
7759 | <52> DW_AT_decl_file : 1 | |
7760 | <53> DW_AT_decl_line : 6 | |
7761 | <54> DW_AT_import : <0x75> | |
7762 | <2><58>: Abbrev Number: 4 (DW_TAG_typedef) | |
7763 | <59> DW_AT_name : B | |
7764 | <5b> DW_AT_decl_file : 1 | |
7765 | <5c> DW_AT_decl_line : 2 | |
7766 | <5d> DW_AT_type : <0x6e> | |
7767 | ... | |
7768 | <1><75>: Abbrev Number: 7 (DW_TAG_base_type) | |
7769 | <76> DW_AT_byte_size : 4 | |
7770 | <77> DW_AT_encoding : 5 (signed) | |
7771 | ||
7772 | imports the wrong die ( 0x75 instead of 0x58 ). | |
7773 | This case will be ignored until the gcc bug is fixed. */ | |
7774 | return; | |
7775 | } | |
7776 | ||
82856980 SW |
7777 | /* Figure out the local name after import. */ |
7778 | import_alias = dwarf2_name (die, cu); | |
27aa8d6a | 7779 | |
794684b6 SW |
7780 | /* Figure out where the statement is being imported to. */ |
7781 | import_prefix = determine_prefix (die, cu); | |
7782 | ||
7783 | /* Figure out what the scope of the imported die is and prepend it | |
7784 | to the name of the imported die. */ | |
de4affc9 | 7785 | imported_name_prefix = determine_prefix (imported_die, imported_cu); |
794684b6 | 7786 | |
f55ee35c JK |
7787 | if (imported_die->tag != DW_TAG_namespace |
7788 | && imported_die->tag != DW_TAG_module) | |
794684b6 | 7789 | { |
13387711 SW |
7790 | imported_declaration = imported_name; |
7791 | canonical_name = imported_name_prefix; | |
794684b6 | 7792 | } |
13387711 | 7793 | else if (strlen (imported_name_prefix) > 0) |
12aaed36 TT |
7794 | canonical_name = obconcat (&objfile->objfile_obstack, |
7795 | imported_name_prefix, "::", imported_name, | |
7796 | (char *) NULL); | |
13387711 SW |
7797 | else |
7798 | canonical_name = imported_name; | |
794684b6 | 7799 | |
32019081 JK |
7800 | cleanups = make_cleanup (VEC_cleanup (const_char_ptr), &excludes); |
7801 | ||
7802 | if (die->tag == DW_TAG_imported_module && cu->language == language_fortran) | |
7803 | for (child_die = die->child; child_die && child_die->tag; | |
7804 | child_die = sibling_die (child_die)) | |
7805 | { | |
7806 | /* DWARF-4: A Fortran use statement with a “rename list” may be | |
7807 | represented by an imported module entry with an import attribute | |
7808 | referring to the module and owned entries corresponding to those | |
7809 | entities that are renamed as part of being imported. */ | |
7810 | ||
7811 | if (child_die->tag != DW_TAG_imported_declaration) | |
7812 | { | |
7813 | complaint (&symfile_complaints, | |
7814 | _("child DW_TAG_imported_declaration expected " | |
7815 | "- DIE at 0x%x [in module %s]"), | |
b64f50a1 | 7816 | child_die->offset.sect_off, objfile->name); |
32019081 JK |
7817 | continue; |
7818 | } | |
7819 | ||
7820 | import_attr = dwarf2_attr (child_die, DW_AT_import, cu); | |
7821 | if (import_attr == NULL) | |
7822 | { | |
7823 | complaint (&symfile_complaints, _("Tag '%s' has no DW_AT_import"), | |
7824 | dwarf_tag_name (child_die->tag)); | |
7825 | continue; | |
7826 | } | |
7827 | ||
7828 | imported_cu = cu; | |
7829 | imported_die = follow_die_ref_or_sig (child_die, import_attr, | |
7830 | &imported_cu); | |
7831 | imported_name = dwarf2_name (imported_die, imported_cu); | |
7832 | if (imported_name == NULL) | |
7833 | { | |
7834 | complaint (&symfile_complaints, | |
7835 | _("child DW_TAG_imported_declaration has unknown " | |
7836 | "imported name - DIE at 0x%x [in module %s]"), | |
b64f50a1 | 7837 | child_die->offset.sect_off, objfile->name); |
32019081 JK |
7838 | continue; |
7839 | } | |
7840 | ||
7841 | VEC_safe_push (const_char_ptr, excludes, imported_name); | |
7842 | ||
7843 | process_die (child_die, cu); | |
7844 | } | |
7845 | ||
c0cc3a76 SW |
7846 | cp_add_using_directive (import_prefix, |
7847 | canonical_name, | |
7848 | import_alias, | |
13387711 | 7849 | imported_declaration, |
32019081 | 7850 | excludes, |
12aaed36 | 7851 | 0, |
bb5ed363 | 7852 | &objfile->objfile_obstack); |
32019081 JK |
7853 | |
7854 | do_cleanups (cleanups); | |
27aa8d6a SW |
7855 | } |
7856 | ||
f4dc4d17 | 7857 | /* Cleanup function for handle_DW_AT_stmt_list. */ |
ae2de4f8 | 7858 | |
cb1df416 DJ |
7859 | static void |
7860 | free_cu_line_header (void *arg) | |
7861 | { | |
7862 | struct dwarf2_cu *cu = arg; | |
7863 | ||
7864 | free_line_header (cu->line_header); | |
7865 | cu->line_header = NULL; | |
7866 | } | |
7867 | ||
1b80a9fa JK |
7868 | /* Check for possibly missing DW_AT_comp_dir with relative .debug_line |
7869 | directory paths. GCC SVN r127613 (new option -fdebug-prefix-map) fixed | |
7870 | this, it was first present in GCC release 4.3.0. */ | |
7871 | ||
7872 | static int | |
7873 | producer_is_gcc_lt_4_3 (struct dwarf2_cu *cu) | |
7874 | { | |
7875 | if (!cu->checked_producer) | |
7876 | check_producer (cu); | |
7877 | ||
7878 | return cu->producer_is_gcc_lt_4_3; | |
7879 | } | |
7880 | ||
9291a0cd TT |
7881 | static void |
7882 | find_file_and_directory (struct die_info *die, struct dwarf2_cu *cu, | |
15d034d0 | 7883 | const char **name, const char **comp_dir) |
9291a0cd TT |
7884 | { |
7885 | struct attribute *attr; | |
7886 | ||
7887 | *name = NULL; | |
7888 | *comp_dir = NULL; | |
7889 | ||
7890 | /* Find the filename. Do not use dwarf2_name here, since the filename | |
7891 | is not a source language identifier. */ | |
7892 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
7893 | if (attr) | |
7894 | { | |
7895 | *name = DW_STRING (attr); | |
7896 | } | |
7897 | ||
7898 | attr = dwarf2_attr (die, DW_AT_comp_dir, cu); | |
7899 | if (attr) | |
7900 | *comp_dir = DW_STRING (attr); | |
1b80a9fa JK |
7901 | else if (producer_is_gcc_lt_4_3 (cu) && *name != NULL |
7902 | && IS_ABSOLUTE_PATH (*name)) | |
9291a0cd | 7903 | { |
15d034d0 TT |
7904 | char *d = ldirname (*name); |
7905 | ||
7906 | *comp_dir = d; | |
7907 | if (d != NULL) | |
7908 | make_cleanup (xfree, d); | |
9291a0cd TT |
7909 | } |
7910 | if (*comp_dir != NULL) | |
7911 | { | |
7912 | /* Irix 6.2 native cc prepends <machine>.: to the compilation | |
7913 | directory, get rid of it. */ | |
7914 | char *cp = strchr (*comp_dir, ':'); | |
7915 | ||
7916 | if (cp && cp != *comp_dir && cp[-1] == '.' && cp[1] == '/') | |
7917 | *comp_dir = cp + 1; | |
7918 | } | |
7919 | ||
7920 | if (*name == NULL) | |
7921 | *name = "<unknown>"; | |
7922 | } | |
7923 | ||
f4dc4d17 DE |
7924 | /* Handle DW_AT_stmt_list for a compilation unit. |
7925 | DIE is the DW_TAG_compile_unit die for CU. | |
f3f5162e DE |
7926 | COMP_DIR is the compilation directory. |
7927 | WANT_LINE_INFO is non-zero if the pc/line-number mapping is needed. */ | |
2ab95328 TT |
7928 | |
7929 | static void | |
7930 | handle_DW_AT_stmt_list (struct die_info *die, struct dwarf2_cu *cu, | |
f4dc4d17 | 7931 | const char *comp_dir) |
2ab95328 TT |
7932 | { |
7933 | struct attribute *attr; | |
2ab95328 | 7934 | |
f4dc4d17 DE |
7935 | gdb_assert (! cu->per_cu->is_debug_types); |
7936 | ||
2ab95328 TT |
7937 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
7938 | if (attr) | |
7939 | { | |
7940 | unsigned int line_offset = DW_UNSND (attr); | |
7941 | struct line_header *line_header | |
3019eac3 | 7942 | = dwarf_decode_line_header (line_offset, cu); |
2ab95328 TT |
7943 | |
7944 | if (line_header) | |
dee91e82 DE |
7945 | { |
7946 | cu->line_header = line_header; | |
7947 | make_cleanup (free_cu_line_header, cu); | |
f4dc4d17 | 7948 | dwarf_decode_lines (line_header, comp_dir, cu, NULL, 1); |
dee91e82 | 7949 | } |
2ab95328 TT |
7950 | } |
7951 | } | |
7952 | ||
95554aad | 7953 | /* Process DW_TAG_compile_unit or DW_TAG_partial_unit. */ |
ae2de4f8 | 7954 | |
c906108c | 7955 | static void |
e7c27a73 | 7956 | read_file_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 7957 | { |
dee91e82 | 7958 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
debd256d | 7959 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
2acceee2 | 7960 | CORE_ADDR lowpc = ((CORE_ADDR) -1); |
c906108c SS |
7961 | CORE_ADDR highpc = ((CORE_ADDR) 0); |
7962 | struct attribute *attr; | |
15d034d0 TT |
7963 | const char *name = NULL; |
7964 | const char *comp_dir = NULL; | |
c906108c SS |
7965 | struct die_info *child_die; |
7966 | bfd *abfd = objfile->obfd; | |
e142c38c | 7967 | CORE_ADDR baseaddr; |
6e70227d | 7968 | |
e142c38c | 7969 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c | 7970 | |
fae299cd | 7971 | get_scope_pc_bounds (die, &lowpc, &highpc, cu); |
c906108c SS |
7972 | |
7973 | /* If we didn't find a lowpc, set it to highpc to avoid complaints | |
7974 | from finish_block. */ | |
2acceee2 | 7975 | if (lowpc == ((CORE_ADDR) -1)) |
c906108c SS |
7976 | lowpc = highpc; |
7977 | lowpc += baseaddr; | |
7978 | highpc += baseaddr; | |
7979 | ||
9291a0cd | 7980 | find_file_and_directory (die, cu, &name, &comp_dir); |
e1024ff1 | 7981 | |
95554aad | 7982 | prepare_one_comp_unit (cu, die, cu->language); |
303b6f5d | 7983 | |
f4b8a18d KW |
7984 | /* The XLCL doesn't generate DW_LANG_OpenCL because this attribute is not |
7985 | standardised yet. As a workaround for the language detection we fall | |
7986 | back to the DW_AT_producer string. */ | |
7987 | if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL") != NULL) | |
7988 | cu->language = language_opencl; | |
7989 | ||
3019eac3 DE |
7990 | /* Similar hack for Go. */ |
7991 | if (cu->producer && strstr (cu->producer, "GNU Go ") != NULL) | |
7992 | set_cu_language (DW_LANG_Go, cu); | |
7993 | ||
f4dc4d17 | 7994 | dwarf2_start_symtab (cu, name, comp_dir, lowpc); |
3019eac3 DE |
7995 | |
7996 | /* Decode line number information if present. We do this before | |
7997 | processing child DIEs, so that the line header table is available | |
7998 | for DW_AT_decl_file. */ | |
f4dc4d17 | 7999 | handle_DW_AT_stmt_list (die, cu, comp_dir); |
3019eac3 DE |
8000 | |
8001 | /* Process all dies in compilation unit. */ | |
8002 | if (die->child != NULL) | |
8003 | { | |
8004 | child_die = die->child; | |
8005 | while (child_die && child_die->tag) | |
8006 | { | |
8007 | process_die (child_die, cu); | |
8008 | child_die = sibling_die (child_die); | |
8009 | } | |
8010 | } | |
8011 | ||
8012 | /* Decode macro information, if present. Dwarf 2 macro information | |
8013 | refers to information in the line number info statement program | |
8014 | header, so we can only read it if we've read the header | |
8015 | successfully. */ | |
8016 | attr = dwarf2_attr (die, DW_AT_GNU_macros, cu); | |
8017 | if (attr && cu->line_header) | |
8018 | { | |
8019 | if (dwarf2_attr (die, DW_AT_macro_info, cu)) | |
8020 | complaint (&symfile_complaints, | |
8021 | _("CU refers to both DW_AT_GNU_macros and DW_AT_macro_info")); | |
8022 | ||
09262596 | 8023 | dwarf_decode_macros (cu, DW_UNSND (attr), comp_dir, 1); |
3019eac3 DE |
8024 | } |
8025 | else | |
8026 | { | |
8027 | attr = dwarf2_attr (die, DW_AT_macro_info, cu); | |
8028 | if (attr && cu->line_header) | |
8029 | { | |
8030 | unsigned int macro_offset = DW_UNSND (attr); | |
8031 | ||
09262596 | 8032 | dwarf_decode_macros (cu, macro_offset, comp_dir, 0); |
3019eac3 DE |
8033 | } |
8034 | } | |
8035 | ||
8036 | do_cleanups (back_to); | |
8037 | } | |
8038 | ||
f4dc4d17 DE |
8039 | /* TU version of handle_DW_AT_stmt_list for read_type_unit_scope. |
8040 | Create the set of symtabs used by this TU, or if this TU is sharing | |
8041 | symtabs with another TU and the symtabs have already been created | |
8042 | then restore those symtabs in the line header. | |
8043 | We don't need the pc/line-number mapping for type units. */ | |
3019eac3 DE |
8044 | |
8045 | static void | |
f4dc4d17 | 8046 | setup_type_unit_groups (struct die_info *die, struct dwarf2_cu *cu) |
3019eac3 | 8047 | { |
f4dc4d17 DE |
8048 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8049 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; | |
8050 | struct type_unit_group *tu_group; | |
8051 | int first_time; | |
8052 | struct line_header *lh; | |
3019eac3 | 8053 | struct attribute *attr; |
f4dc4d17 | 8054 | unsigned int i, line_offset; |
3019eac3 | 8055 | |
f4dc4d17 | 8056 | gdb_assert (per_cu->is_debug_types); |
3019eac3 | 8057 | |
f4dc4d17 | 8058 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
3019eac3 | 8059 | |
f4dc4d17 DE |
8060 | /* If we're using .gdb_index (includes -readnow) then |
8061 | per_cu->s.type_unit_group may not have been set up yet. */ | |
796a7ff8 DE |
8062 | if (per_cu->type_unit_group == NULL) |
8063 | per_cu->type_unit_group = get_type_unit_group (cu, attr); | |
8064 | tu_group = per_cu->type_unit_group; | |
f4dc4d17 DE |
8065 | |
8066 | /* If we've already processed this stmt_list there's no real need to | |
8067 | do it again, we could fake it and just recreate the part we need | |
8068 | (file name,index -> symtab mapping). If data shows this optimization | |
8069 | is useful we can do it then. */ | |
8070 | first_time = tu_group->primary_symtab == NULL; | |
8071 | ||
8072 | /* We have to handle the case of both a missing DW_AT_stmt_list or bad | |
8073 | debug info. */ | |
8074 | lh = NULL; | |
8075 | if (attr != NULL) | |
3019eac3 | 8076 | { |
f4dc4d17 DE |
8077 | line_offset = DW_UNSND (attr); |
8078 | lh = dwarf_decode_line_header (line_offset, cu); | |
8079 | } | |
8080 | if (lh == NULL) | |
8081 | { | |
8082 | if (first_time) | |
8083 | dwarf2_start_symtab (cu, "", NULL, 0); | |
8084 | else | |
8085 | { | |
8086 | gdb_assert (tu_group->symtabs == NULL); | |
8087 | restart_symtab (0); | |
8088 | } | |
8089 | /* Note: The primary symtab will get allocated at the end. */ | |
8090 | return; | |
3019eac3 DE |
8091 | } |
8092 | ||
f4dc4d17 DE |
8093 | cu->line_header = lh; |
8094 | make_cleanup (free_cu_line_header, cu); | |
3019eac3 | 8095 | |
f4dc4d17 DE |
8096 | if (first_time) |
8097 | { | |
8098 | dwarf2_start_symtab (cu, "", NULL, 0); | |
3019eac3 | 8099 | |
f4dc4d17 DE |
8100 | tu_group->num_symtabs = lh->num_file_names; |
8101 | tu_group->symtabs = XNEWVEC (struct symtab *, lh->num_file_names); | |
3019eac3 | 8102 | |
f4dc4d17 DE |
8103 | for (i = 0; i < lh->num_file_names; ++i) |
8104 | { | |
8105 | char *dir = NULL; | |
8106 | struct file_entry *fe = &lh->file_names[i]; | |
3019eac3 | 8107 | |
f4dc4d17 DE |
8108 | if (fe->dir_index) |
8109 | dir = lh->include_dirs[fe->dir_index - 1]; | |
8110 | dwarf2_start_subfile (fe->name, dir, NULL); | |
3019eac3 | 8111 | |
f4dc4d17 DE |
8112 | /* Note: We don't have to watch for the main subfile here, type units |
8113 | don't have DW_AT_name. */ | |
3019eac3 | 8114 | |
f4dc4d17 DE |
8115 | if (current_subfile->symtab == NULL) |
8116 | { | |
8117 | /* NOTE: start_subfile will recognize when it's been passed | |
8118 | a file it has already seen. So we can't assume there's a | |
8119 | simple mapping from lh->file_names to subfiles, | |
8120 | lh->file_names may contain dups. */ | |
8121 | current_subfile->symtab = allocate_symtab (current_subfile->name, | |
8122 | objfile); | |
8123 | } | |
8124 | ||
8125 | fe->symtab = current_subfile->symtab; | |
8126 | tu_group->symtabs[i] = fe->symtab; | |
8127 | } | |
8128 | } | |
8129 | else | |
3019eac3 | 8130 | { |
f4dc4d17 DE |
8131 | restart_symtab (0); |
8132 | ||
8133 | for (i = 0; i < lh->num_file_names; ++i) | |
8134 | { | |
8135 | struct file_entry *fe = &lh->file_names[i]; | |
8136 | ||
8137 | fe->symtab = tu_group->symtabs[i]; | |
8138 | } | |
3019eac3 DE |
8139 | } |
8140 | ||
f4dc4d17 DE |
8141 | /* The main symtab is allocated last. Type units don't have DW_AT_name |
8142 | so they don't have a "real" (so to speak) symtab anyway. | |
8143 | There is later code that will assign the main symtab to all symbols | |
8144 | that don't have one. We need to handle the case of a symbol with a | |
8145 | missing symtab (DW_AT_decl_file) anyway. */ | |
8146 | } | |
3019eac3 | 8147 | |
f4dc4d17 DE |
8148 | /* Process DW_TAG_type_unit. |
8149 | For TUs we want to skip the first top level sibling if it's not the | |
8150 | actual type being defined by this TU. In this case the first top | |
8151 | level sibling is there to provide context only. */ | |
3019eac3 | 8152 | |
f4dc4d17 DE |
8153 | static void |
8154 | read_type_unit_scope (struct die_info *die, struct dwarf2_cu *cu) | |
8155 | { | |
8156 | struct die_info *child_die; | |
3019eac3 | 8157 | |
f4dc4d17 DE |
8158 | prepare_one_comp_unit (cu, die, language_minimal); |
8159 | ||
8160 | /* Initialize (or reinitialize) the machinery for building symtabs. | |
8161 | We do this before processing child DIEs, so that the line header table | |
8162 | is available for DW_AT_decl_file. */ | |
8163 | setup_type_unit_groups (die, cu); | |
8164 | ||
8165 | if (die->child != NULL) | |
8166 | { | |
8167 | child_die = die->child; | |
8168 | while (child_die && child_die->tag) | |
8169 | { | |
8170 | process_die (child_die, cu); | |
8171 | child_die = sibling_die (child_die); | |
8172 | } | |
8173 | } | |
3019eac3 DE |
8174 | } |
8175 | \f | |
80626a55 DE |
8176 | /* DWO/DWP files. |
8177 | ||
8178 | http://gcc.gnu.org/wiki/DebugFission | |
8179 | http://gcc.gnu.org/wiki/DebugFissionDWP | |
8180 | ||
8181 | To simplify handling of both DWO files ("object" files with the DWARF info) | |
8182 | and DWP files (a file with the DWOs packaged up into one file), we treat | |
8183 | DWP files as having a collection of virtual DWO files. */ | |
3019eac3 DE |
8184 | |
8185 | static hashval_t | |
8186 | hash_dwo_file (const void *item) | |
8187 | { | |
8188 | const struct dwo_file *dwo_file = item; | |
8189 | ||
80626a55 | 8190 | return htab_hash_string (dwo_file->name); |
3019eac3 DE |
8191 | } |
8192 | ||
8193 | static int | |
8194 | eq_dwo_file (const void *item_lhs, const void *item_rhs) | |
8195 | { | |
8196 | const struct dwo_file *lhs = item_lhs; | |
8197 | const struct dwo_file *rhs = item_rhs; | |
8198 | ||
80626a55 | 8199 | return strcmp (lhs->name, rhs->name) == 0; |
3019eac3 DE |
8200 | } |
8201 | ||
8202 | /* Allocate a hash table for DWO files. */ | |
8203 | ||
8204 | static htab_t | |
8205 | allocate_dwo_file_hash_table (void) | |
8206 | { | |
8207 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
8208 | ||
8209 | return htab_create_alloc_ex (41, | |
8210 | hash_dwo_file, | |
8211 | eq_dwo_file, | |
8212 | NULL, | |
8213 | &objfile->objfile_obstack, | |
8214 | hashtab_obstack_allocate, | |
8215 | dummy_obstack_deallocate); | |
8216 | } | |
8217 | ||
80626a55 DE |
8218 | /* Lookup DWO file DWO_NAME. */ |
8219 | ||
8220 | static void ** | |
8221 | lookup_dwo_file_slot (const char *dwo_name) | |
8222 | { | |
8223 | struct dwo_file find_entry; | |
8224 | void **slot; | |
8225 | ||
8226 | if (dwarf2_per_objfile->dwo_files == NULL) | |
8227 | dwarf2_per_objfile->dwo_files = allocate_dwo_file_hash_table (); | |
8228 | ||
8229 | memset (&find_entry, 0, sizeof (find_entry)); | |
8230 | find_entry.name = dwo_name; | |
8231 | slot = htab_find_slot (dwarf2_per_objfile->dwo_files, &find_entry, INSERT); | |
8232 | ||
8233 | return slot; | |
8234 | } | |
8235 | ||
3019eac3 DE |
8236 | static hashval_t |
8237 | hash_dwo_unit (const void *item) | |
8238 | { | |
8239 | const struct dwo_unit *dwo_unit = item; | |
8240 | ||
8241 | /* This drops the top 32 bits of the id, but is ok for a hash. */ | |
8242 | return dwo_unit->signature; | |
8243 | } | |
8244 | ||
8245 | static int | |
8246 | eq_dwo_unit (const void *item_lhs, const void *item_rhs) | |
8247 | { | |
8248 | const struct dwo_unit *lhs = item_lhs; | |
8249 | const struct dwo_unit *rhs = item_rhs; | |
8250 | ||
8251 | /* The signature is assumed to be unique within the DWO file. | |
8252 | So while object file CU dwo_id's always have the value zero, | |
8253 | that's OK, assuming each object file DWO file has only one CU, | |
8254 | and that's the rule for now. */ | |
8255 | return lhs->signature == rhs->signature; | |
8256 | } | |
8257 | ||
8258 | /* Allocate a hash table for DWO CUs,TUs. | |
8259 | There is one of these tables for each of CUs,TUs for each DWO file. */ | |
8260 | ||
8261 | static htab_t | |
8262 | allocate_dwo_unit_table (struct objfile *objfile) | |
8263 | { | |
8264 | /* Start out with a pretty small number. | |
8265 | Generally DWO files contain only one CU and maybe some TUs. */ | |
8266 | return htab_create_alloc_ex (3, | |
8267 | hash_dwo_unit, | |
8268 | eq_dwo_unit, | |
8269 | NULL, | |
8270 | &objfile->objfile_obstack, | |
8271 | hashtab_obstack_allocate, | |
8272 | dummy_obstack_deallocate); | |
8273 | } | |
8274 | ||
80626a55 | 8275 | /* Structure used to pass data to create_dwo_debug_info_hash_table_reader. */ |
3019eac3 DE |
8276 | |
8277 | struct create_dwo_info_table_data | |
8278 | { | |
8279 | struct dwo_file *dwo_file; | |
8280 | htab_t cu_htab; | |
8281 | }; | |
8282 | ||
80626a55 | 8283 | /* die_reader_func for create_dwo_debug_info_hash_table. */ |
3019eac3 DE |
8284 | |
8285 | static void | |
80626a55 DE |
8286 | create_dwo_debug_info_hash_table_reader (const struct die_reader_specs *reader, |
8287 | gdb_byte *info_ptr, | |
8288 | struct die_info *comp_unit_die, | |
8289 | int has_children, | |
8290 | void *datap) | |
3019eac3 DE |
8291 | { |
8292 | struct dwarf2_cu *cu = reader->cu; | |
8293 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
8294 | sect_offset offset = cu->per_cu->offset; | |
8295 | struct dwarf2_section_info *section = cu->per_cu->info_or_types_section; | |
8296 | struct create_dwo_info_table_data *data = datap; | |
8297 | struct dwo_file *dwo_file = data->dwo_file; | |
8298 | htab_t cu_htab = data->cu_htab; | |
8299 | void **slot; | |
8300 | struct attribute *attr; | |
8301 | struct dwo_unit *dwo_unit; | |
8302 | ||
8303 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_id, cu); | |
8304 | if (attr == NULL) | |
8305 | { | |
8306 | error (_("Dwarf Error: debug entry at offset 0x%x is missing" | |
8307 | " its dwo_id [in module %s]"), | |
80626a55 | 8308 | offset.sect_off, dwo_file->name); |
3019eac3 DE |
8309 | return; |
8310 | } | |
8311 | ||
8312 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); | |
8313 | dwo_unit->dwo_file = dwo_file; | |
8314 | dwo_unit->signature = DW_UNSND (attr); | |
8315 | dwo_unit->info_or_types_section = section; | |
8316 | dwo_unit->offset = offset; | |
8317 | dwo_unit->length = cu->per_cu->length; | |
8318 | ||
8319 | slot = htab_find_slot (cu_htab, dwo_unit, INSERT); | |
8320 | gdb_assert (slot != NULL); | |
8321 | if (*slot != NULL) | |
8322 | { | |
8323 | const struct dwo_unit *dup_dwo_unit = *slot; | |
8324 | ||
8325 | complaint (&symfile_complaints, | |
8326 | _("debug entry at offset 0x%x is duplicate to the entry at" | |
8327 | " offset 0x%x, dwo_id 0x%s [in module %s]"), | |
8328 | offset.sect_off, dup_dwo_unit->offset.sect_off, | |
8329 | phex (dwo_unit->signature, sizeof (dwo_unit->signature)), | |
80626a55 | 8330 | dwo_file->name); |
3019eac3 DE |
8331 | } |
8332 | else | |
8333 | *slot = dwo_unit; | |
8334 | ||
09406207 | 8335 | if (dwarf2_read_debug) |
3019eac3 DE |
8336 | fprintf_unfiltered (gdb_stdlog, " offset 0x%x, dwo_id 0x%s\n", |
8337 | offset.sect_off, | |
8338 | phex (dwo_unit->signature, | |
8339 | sizeof (dwo_unit->signature))); | |
8340 | } | |
8341 | ||
80626a55 DE |
8342 | /* Create a hash table to map DWO IDs to their CU entry in |
8343 | .debug_info.dwo in DWO_FILE. | |
8344 | Note: This function processes DWO files only, not DWP files. */ | |
3019eac3 DE |
8345 | |
8346 | static htab_t | |
80626a55 | 8347 | create_dwo_debug_info_hash_table (struct dwo_file *dwo_file) |
3019eac3 DE |
8348 | { |
8349 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
8350 | struct dwarf2_section_info *section = &dwo_file->sections.info; | |
8351 | bfd *abfd; | |
8352 | htab_t cu_htab; | |
8353 | gdb_byte *info_ptr, *end_ptr; | |
8354 | struct create_dwo_info_table_data create_dwo_info_table_data; | |
8355 | ||
8356 | dwarf2_read_section (objfile, section); | |
8357 | info_ptr = section->buffer; | |
8358 | ||
8359 | if (info_ptr == NULL) | |
8360 | return NULL; | |
8361 | ||
8362 | /* We can't set abfd until now because the section may be empty or | |
8363 | not present, in which case section->asection will be NULL. */ | |
8364 | abfd = section->asection->owner; | |
8365 | ||
09406207 | 8366 | if (dwarf2_read_debug) |
3019eac3 DE |
8367 | fprintf_unfiltered (gdb_stdlog, "Reading .debug_info.dwo for %s:\n", |
8368 | bfd_get_filename (abfd)); | |
8369 | ||
8370 | cu_htab = allocate_dwo_unit_table (objfile); | |
8371 | ||
8372 | create_dwo_info_table_data.dwo_file = dwo_file; | |
8373 | create_dwo_info_table_data.cu_htab = cu_htab; | |
8374 | ||
8375 | end_ptr = info_ptr + section->size; | |
8376 | while (info_ptr < end_ptr) | |
8377 | { | |
8378 | struct dwarf2_per_cu_data per_cu; | |
8379 | ||
8380 | memset (&per_cu, 0, sizeof (per_cu)); | |
8381 | per_cu.objfile = objfile; | |
8382 | per_cu.is_debug_types = 0; | |
8383 | per_cu.offset.sect_off = info_ptr - section->buffer; | |
8384 | per_cu.info_or_types_section = section; | |
8385 | ||
8386 | init_cutu_and_read_dies_no_follow (&per_cu, | |
8387 | &dwo_file->sections.abbrev, | |
8388 | dwo_file, | |
80626a55 | 8389 | create_dwo_debug_info_hash_table_reader, |
3019eac3 DE |
8390 | &create_dwo_info_table_data); |
8391 | ||
8392 | info_ptr += per_cu.length; | |
8393 | } | |
8394 | ||
8395 | return cu_htab; | |
8396 | } | |
8397 | ||
80626a55 DE |
8398 | /* DWP file .debug_{cu,tu}_index section format: |
8399 | [ref: http://gcc.gnu.org/wiki/DebugFissionDWP] | |
8400 | ||
8401 | Both index sections have the same format, and serve to map a 64-bit | |
8402 | signature to a set of section numbers. Each section begins with a header, | |
8403 | followed by a hash table of 64-bit signatures, a parallel table of 32-bit | |
8404 | indexes, and a pool of 32-bit section numbers. The index sections will be | |
8405 | aligned at 8-byte boundaries in the file. | |
8406 | ||
8407 | The index section header contains two unsigned 32-bit values (using the | |
8408 | byte order of the application binary): | |
8409 | ||
8410 | N, the number of compilation units or type units in the index | |
8411 | M, the number of slots in the hash table | |
8412 | ||
8413 | (We assume that N and M will not exceed 2^32 - 1.) | |
8414 | ||
8415 | The size of the hash table, M, must be 2^k such that 2^k > 3*N/2. | |
8416 | ||
8417 | The hash table begins at offset 8 in the section, and consists of an array | |
8418 | of M 64-bit slots. Each slot contains a 64-bit signature (using the byte | |
8419 | order of the application binary). Unused slots in the hash table are 0. | |
8420 | (We rely on the extreme unlikeliness of a signature being exactly 0.) | |
8421 | ||
8422 | The parallel table begins immediately after the hash table | |
8423 | (at offset 8 + 8 * M from the beginning of the section), and consists of an | |
8424 | array of 32-bit indexes (using the byte order of the application binary), | |
8425 | corresponding 1-1 with slots in the hash table. Each entry in the parallel | |
8426 | table contains a 32-bit index into the pool of section numbers. For unused | |
8427 | hash table slots, the corresponding entry in the parallel table will be 0. | |
8428 | ||
8429 | Given a 64-bit compilation unit signature or a type signature S, an entry | |
8430 | in the hash table is located as follows: | |
8431 | ||
8432 | 1) Calculate a primary hash H = S & MASK(k), where MASK(k) is a mask with | |
8433 | the low-order k bits all set to 1. | |
8434 | ||
8435 | 2) Calculate a secondary hash H' = (((S >> 32) & MASK(k)) | 1). | |
8436 | ||
8437 | 3) If the hash table entry at index H matches the signature, use that | |
8438 | entry. If the hash table entry at index H is unused (all zeroes), | |
8439 | terminate the search: the signature is not present in the table. | |
8440 | ||
8441 | 4) Let H = (H + H') modulo M. Repeat at Step 3. | |
8442 | ||
8443 | Because M > N and H' and M are relatively prime, the search is guaranteed | |
8444 | to stop at an unused slot or find the match. | |
8445 | ||
8446 | The pool of section numbers begins immediately following the hash table | |
8447 | (at offset 8 + 12 * M from the beginning of the section). The pool of | |
8448 | section numbers consists of an array of 32-bit words (using the byte order | |
8449 | of the application binary). Each item in the array is indexed starting | |
8450 | from 0. The hash table entry provides the index of the first section | |
8451 | number in the set. Additional section numbers in the set follow, and the | |
8452 | set is terminated by a 0 entry (section number 0 is not used in ELF). | |
8453 | ||
8454 | In each set of section numbers, the .debug_info.dwo or .debug_types.dwo | |
8455 | section must be the first entry in the set, and the .debug_abbrev.dwo must | |
8456 | be the second entry. Other members of the set may follow in any order. */ | |
8457 | ||
8458 | /* Create a hash table to map DWO IDs to their CU/TU entry in | |
8459 | .debug_{info,types}.dwo in DWP_FILE. | |
8460 | Returns NULL if there isn't one. | |
8461 | Note: This function processes DWP files only, not DWO files. */ | |
8462 | ||
8463 | static struct dwp_hash_table * | |
8464 | create_dwp_hash_table (struct dwp_file *dwp_file, int is_debug_types) | |
8465 | { | |
8466 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
8467 | bfd *dbfd = dwp_file->dbfd; | |
8468 | char *index_ptr, *index_end; | |
8469 | struct dwarf2_section_info *index; | |
8470 | uint32_t version, nr_units, nr_slots; | |
8471 | struct dwp_hash_table *htab; | |
8472 | ||
8473 | if (is_debug_types) | |
8474 | index = &dwp_file->sections.tu_index; | |
8475 | else | |
8476 | index = &dwp_file->sections.cu_index; | |
8477 | ||
8478 | if (dwarf2_section_empty_p (index)) | |
8479 | return NULL; | |
8480 | dwarf2_read_section (objfile, index); | |
8481 | ||
8482 | index_ptr = index->buffer; | |
8483 | index_end = index_ptr + index->size; | |
8484 | ||
8485 | version = read_4_bytes (dbfd, index_ptr); | |
8486 | index_ptr += 8; /* Skip the unused word. */ | |
8487 | nr_units = read_4_bytes (dbfd, index_ptr); | |
8488 | index_ptr += 4; | |
8489 | nr_slots = read_4_bytes (dbfd, index_ptr); | |
8490 | index_ptr += 4; | |
8491 | ||
8492 | if (version != 1) | |
8493 | { | |
8494 | error (_("Dwarf Error: unsupported DWP file version (%u)" | |
8495 | " [in module %s]"), | |
8496 | version, dwp_file->name); | |
8497 | } | |
8498 | if (nr_slots != (nr_slots & -nr_slots)) | |
8499 | { | |
8500 | error (_("Dwarf Error: number of slots in DWP hash table (%u)" | |
8501 | " is not power of 2 [in module %s]"), | |
8502 | nr_slots, dwp_file->name); | |
8503 | } | |
8504 | ||
8505 | htab = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwp_hash_table); | |
8506 | htab->nr_units = nr_units; | |
8507 | htab->nr_slots = nr_slots; | |
8508 | htab->hash_table = index_ptr; | |
8509 | htab->unit_table = htab->hash_table + sizeof (uint64_t) * nr_slots; | |
8510 | htab->section_pool = htab->unit_table + sizeof (uint32_t) * nr_slots; | |
8511 | ||
8512 | return htab; | |
8513 | } | |
8514 | ||
8515 | /* Update SECTIONS with the data from SECTP. | |
8516 | ||
8517 | This function is like the other "locate" section routines that are | |
8518 | passed to bfd_map_over_sections, but in this context the sections to | |
8519 | read comes from the DWP hash table, not the full ELF section table. | |
8520 | ||
8521 | The result is non-zero for success, or zero if an error was found. */ | |
8522 | ||
8523 | static int | |
8524 | locate_virtual_dwo_sections (asection *sectp, | |
8525 | struct virtual_dwo_sections *sections) | |
8526 | { | |
8527 | const struct dwop_section_names *names = &dwop_section_names; | |
8528 | ||
8529 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
8530 | { | |
8531 | /* There can be only one. */ | |
8532 | if (sections->abbrev.asection != NULL) | |
8533 | return 0; | |
8534 | sections->abbrev.asection = sectp; | |
8535 | sections->abbrev.size = bfd_get_section_size (sectp); | |
8536 | } | |
8537 | else if (section_is_p (sectp->name, &names->info_dwo) | |
8538 | || section_is_p (sectp->name, &names->types_dwo)) | |
8539 | { | |
8540 | /* There can be only one. */ | |
8541 | if (sections->info_or_types.asection != NULL) | |
8542 | return 0; | |
8543 | sections->info_or_types.asection = sectp; | |
8544 | sections->info_or_types.size = bfd_get_section_size (sectp); | |
8545 | } | |
8546 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
8547 | { | |
8548 | /* There can be only one. */ | |
8549 | if (sections->line.asection != NULL) | |
8550 | return 0; | |
8551 | sections->line.asection = sectp; | |
8552 | sections->line.size = bfd_get_section_size (sectp); | |
8553 | } | |
8554 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
8555 | { | |
8556 | /* There can be only one. */ | |
8557 | if (sections->loc.asection != NULL) | |
8558 | return 0; | |
8559 | sections->loc.asection = sectp; | |
8560 | sections->loc.size = bfd_get_section_size (sectp); | |
8561 | } | |
8562 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
8563 | { | |
8564 | /* There can be only one. */ | |
8565 | if (sections->macinfo.asection != NULL) | |
8566 | return 0; | |
8567 | sections->macinfo.asection = sectp; | |
8568 | sections->macinfo.size = bfd_get_section_size (sectp); | |
8569 | } | |
8570 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
8571 | { | |
8572 | /* There can be only one. */ | |
8573 | if (sections->macro.asection != NULL) | |
8574 | return 0; | |
8575 | sections->macro.asection = sectp; | |
8576 | sections->macro.size = bfd_get_section_size (sectp); | |
8577 | } | |
8578 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
8579 | { | |
8580 | /* There can be only one. */ | |
8581 | if (sections->str_offsets.asection != NULL) | |
8582 | return 0; | |
8583 | sections->str_offsets.asection = sectp; | |
8584 | sections->str_offsets.size = bfd_get_section_size (sectp); | |
8585 | } | |
8586 | else | |
8587 | { | |
8588 | /* No other kind of section is valid. */ | |
8589 | return 0; | |
8590 | } | |
8591 | ||
8592 | return 1; | |
8593 | } | |
8594 | ||
8595 | /* Create a dwo_unit object for the DWO with signature SIGNATURE. | |
8596 | HTAB is the hash table from the DWP file. | |
8597 | SECTION_INDEX is the index of the DWO in HTAB. */ | |
8598 | ||
8599 | static struct dwo_unit * | |
8600 | create_dwo_in_dwp (struct dwp_file *dwp_file, | |
8601 | const struct dwp_hash_table *htab, | |
8602 | uint32_t section_index, | |
8603 | ULONGEST signature, int is_debug_types) | |
8604 | { | |
8605 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
8606 | bfd *dbfd = dwp_file->dbfd; | |
8607 | const char *kind = is_debug_types ? "TU" : "CU"; | |
8608 | struct dwo_file *dwo_file; | |
8609 | struct dwo_unit *dwo_unit; | |
8610 | struct virtual_dwo_sections sections; | |
8611 | void **dwo_file_slot; | |
8612 | char *virtual_dwo_name; | |
8613 | struct dwarf2_section_info *cutu; | |
8614 | struct cleanup *cleanups; | |
8615 | int i; | |
8616 | ||
8617 | if (dwarf2_read_debug) | |
8618 | { | |
8619 | fprintf_unfiltered (gdb_stdlog, "Reading %s %u/0x%s in DWP file: %s\n", | |
8620 | kind, | |
8621 | section_index, phex (signature, sizeof (signature)), | |
8622 | dwp_file->name); | |
8623 | } | |
8624 | ||
8625 | /* Fetch the sections of this DWO. | |
8626 | Put a limit on the number of sections we look for so that bad data | |
8627 | doesn't cause us to loop forever. */ | |
8628 | ||
8629 | #define MAX_NR_DWO_SECTIONS \ | |
8630 | (1 /* .debug_info or .debug_types */ \ | |
8631 | + 1 /* .debug_abbrev */ \ | |
8632 | + 1 /* .debug_line */ \ | |
8633 | + 1 /* .debug_loc */ \ | |
8634 | + 1 /* .debug_str_offsets */ \ | |
8635 | + 1 /* .debug_macro */ \ | |
8636 | + 1 /* .debug_macinfo */ \ | |
8637 | + 1 /* trailing zero */) | |
8638 | ||
8639 | memset (§ions, 0, sizeof (sections)); | |
8640 | cleanups = make_cleanup (null_cleanup, 0); | |
8641 | ||
8642 | for (i = 0; i < MAX_NR_DWO_SECTIONS; ++i) | |
8643 | { | |
8644 | asection *sectp; | |
8645 | uint32_t section_nr = | |
8646 | read_4_bytes (dbfd, | |
8647 | htab->section_pool | |
8648 | + (section_index + i) * sizeof (uint32_t)); | |
8649 | ||
8650 | if (section_nr == 0) | |
8651 | break; | |
8652 | if (section_nr >= dwp_file->num_sections) | |
8653 | { | |
8654 | error (_("Dwarf Error: bad DWP hash table, section number too large" | |
8655 | " [in module %s]"), | |
8656 | dwp_file->name); | |
8657 | } | |
8658 | ||
8659 | sectp = dwp_file->elf_sections[section_nr]; | |
8660 | if (! locate_virtual_dwo_sections (sectp, §ions)) | |
8661 | { | |
8662 | error (_("Dwarf Error: bad DWP hash table, invalid section found" | |
8663 | " [in module %s]"), | |
8664 | dwp_file->name); | |
8665 | } | |
8666 | } | |
8667 | ||
8668 | if (i < 2 | |
8669 | || sections.info_or_types.asection == NULL | |
8670 | || sections.abbrev.asection == NULL) | |
8671 | { | |
8672 | error (_("Dwarf Error: bad DWP hash table, missing DWO sections" | |
8673 | " [in module %s]"), | |
8674 | dwp_file->name); | |
8675 | } | |
8676 | if (i == MAX_NR_DWO_SECTIONS) | |
8677 | { | |
8678 | error (_("Dwarf Error: bad DWP hash table, too many DWO sections" | |
8679 | " [in module %s]"), | |
8680 | dwp_file->name); | |
8681 | } | |
8682 | ||
8683 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
8684 | have dwo_unit "live" in that. At least for now. | |
8685 | ||
8686 | The DWP file can be made up of a random collection of CUs and TUs. | |
c766f7ec DE |
8687 | However, for each CU + set of TUs that came from the same original DWO |
8688 | file, we want to combine them back into a virtual DWO file to save space | |
80626a55 DE |
8689 | (fewer struct dwo_file objects to allocated). Remember that for really |
8690 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ | |
8691 | ||
2792b94d PM |
8692 | virtual_dwo_name = |
8693 | xstrprintf ("virtual-dwo/%d-%d-%d-%d", | |
8694 | sections.abbrev.asection ? sections.abbrev.asection->id : 0, | |
8695 | sections.line.asection ? sections.line.asection->id : 0, | |
8696 | sections.loc.asection ? sections.loc.asection->id : 0, | |
8697 | (sections.str_offsets.asection | |
8698 | ? sections.str_offsets.asection->id | |
8699 | : 0)); | |
80626a55 DE |
8700 | make_cleanup (xfree, virtual_dwo_name); |
8701 | /* Can we use an existing virtual DWO file? */ | |
8702 | dwo_file_slot = lookup_dwo_file_slot (virtual_dwo_name); | |
8703 | /* Create one if necessary. */ | |
8704 | if (*dwo_file_slot == NULL) | |
8705 | { | |
8706 | if (dwarf2_read_debug) | |
8707 | { | |
8708 | fprintf_unfiltered (gdb_stdlog, "Creating virtual DWO: %s\n", | |
8709 | virtual_dwo_name); | |
8710 | } | |
8711 | dwo_file = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_file); | |
8712 | dwo_file->name = obstack_copy0 (&objfile->objfile_obstack, | |
8713 | virtual_dwo_name, | |
8714 | strlen (virtual_dwo_name)); | |
8715 | dwo_file->sections.abbrev = sections.abbrev; | |
8716 | dwo_file->sections.line = sections.line; | |
8717 | dwo_file->sections.loc = sections.loc; | |
8718 | dwo_file->sections.macinfo = sections.macinfo; | |
8719 | dwo_file->sections.macro = sections.macro; | |
8720 | dwo_file->sections.str_offsets = sections.str_offsets; | |
8721 | /* The "str" section is global to the entire DWP file. */ | |
8722 | dwo_file->sections.str = dwp_file->sections.str; | |
8723 | /* The info or types section is assigned later to dwo_unit, | |
8724 | there's no need to record it in dwo_file. | |
8725 | Also, we can't simply record type sections in dwo_file because | |
8726 | we record a pointer into the vector in dwo_unit. As we collect more | |
8727 | types we'll grow the vector and eventually have to reallocate space | |
8728 | for it, invalidating all the pointers into the current copy. */ | |
8729 | *dwo_file_slot = dwo_file; | |
8730 | } | |
8731 | else | |
8732 | { | |
8733 | if (dwarf2_read_debug) | |
8734 | { | |
8735 | fprintf_unfiltered (gdb_stdlog, "Using existing virtual DWO: %s\n", | |
8736 | virtual_dwo_name); | |
8737 | } | |
8738 | dwo_file = *dwo_file_slot; | |
8739 | } | |
8740 | do_cleanups (cleanups); | |
8741 | ||
8742 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); | |
8743 | dwo_unit->dwo_file = dwo_file; | |
8744 | dwo_unit->signature = signature; | |
8745 | dwo_unit->info_or_types_section = | |
8746 | obstack_alloc (&objfile->objfile_obstack, | |
8747 | sizeof (struct dwarf2_section_info)); | |
8748 | *dwo_unit->info_or_types_section = sections.info_or_types; | |
8749 | /* offset, length, type_offset_in_tu are set later. */ | |
8750 | ||
8751 | return dwo_unit; | |
8752 | } | |
8753 | ||
8754 | /* Lookup the DWO with SIGNATURE in DWP_FILE. */ | |
8755 | ||
8756 | static struct dwo_unit * | |
8757 | lookup_dwo_in_dwp (struct dwp_file *dwp_file, | |
8758 | const struct dwp_hash_table *htab, | |
8759 | ULONGEST signature, int is_debug_types) | |
8760 | { | |
8761 | bfd *dbfd = dwp_file->dbfd; | |
8762 | uint32_t mask = htab->nr_slots - 1; | |
8763 | uint32_t hash = signature & mask; | |
8764 | uint32_t hash2 = ((signature >> 32) & mask) | 1; | |
8765 | unsigned int i; | |
8766 | void **slot; | |
8767 | struct dwo_unit find_dwo_cu, *dwo_cu; | |
8768 | ||
8769 | memset (&find_dwo_cu, 0, sizeof (find_dwo_cu)); | |
8770 | find_dwo_cu.signature = signature; | |
8771 | slot = htab_find_slot (dwp_file->loaded_cutus, &find_dwo_cu, INSERT); | |
8772 | ||
8773 | if (*slot != NULL) | |
8774 | return *slot; | |
8775 | ||
8776 | /* Use a for loop so that we don't loop forever on bad debug info. */ | |
8777 | for (i = 0; i < htab->nr_slots; ++i) | |
8778 | { | |
8779 | ULONGEST signature_in_table; | |
8780 | ||
8781 | signature_in_table = | |
8782 | read_8_bytes (dbfd, htab->hash_table + hash * sizeof (uint64_t)); | |
8783 | if (signature_in_table == signature) | |
8784 | { | |
8785 | uint32_t section_index = | |
8786 | read_4_bytes (dbfd, htab->unit_table + hash * sizeof (uint32_t)); | |
8787 | ||
8788 | *slot = create_dwo_in_dwp (dwp_file, htab, section_index, | |
8789 | signature, is_debug_types); | |
8790 | return *slot; | |
8791 | } | |
8792 | if (signature_in_table == 0) | |
8793 | return NULL; | |
8794 | hash = (hash + hash2) & mask; | |
8795 | } | |
8796 | ||
8797 | error (_("Dwarf Error: bad DWP hash table, lookup didn't terminate" | |
8798 | " [in module %s]"), | |
8799 | dwp_file->name); | |
8800 | } | |
8801 | ||
8802 | /* Subroutine of open_dwop_file to simplify it. | |
3019eac3 DE |
8803 | Open the file specified by FILE_NAME and hand it off to BFD for |
8804 | preliminary analysis. Return a newly initialized bfd *, which | |
8805 | includes a canonicalized copy of FILE_NAME. | |
80626a55 | 8806 | If IS_DWP is TRUE, we're opening a DWP file, otherwise a DWO file. |
3019eac3 DE |
8807 | In case of trouble, return NULL. |
8808 | NOTE: This function is derived from symfile_bfd_open. */ | |
8809 | ||
8810 | static bfd * | |
80626a55 | 8811 | try_open_dwop_file (const char *file_name, int is_dwp) |
3019eac3 DE |
8812 | { |
8813 | bfd *sym_bfd; | |
80626a55 | 8814 | int desc, flags; |
3019eac3 | 8815 | char *absolute_name; |
3019eac3 | 8816 | |
80626a55 DE |
8817 | flags = OPF_TRY_CWD_FIRST; |
8818 | if (is_dwp) | |
8819 | flags |= OPF_SEARCH_IN_PATH; | |
8820 | desc = openp (debug_file_directory, flags, file_name, | |
3019eac3 DE |
8821 | O_RDONLY | O_BINARY, &absolute_name); |
8822 | if (desc < 0) | |
8823 | return NULL; | |
8824 | ||
bb397797 | 8825 | sym_bfd = gdb_bfd_open (absolute_name, gnutarget, desc); |
3019eac3 DE |
8826 | if (!sym_bfd) |
8827 | { | |
3019eac3 DE |
8828 | xfree (absolute_name); |
8829 | return NULL; | |
8830 | } | |
a4453b7e | 8831 | xfree (absolute_name); |
3019eac3 DE |
8832 | bfd_set_cacheable (sym_bfd, 1); |
8833 | ||
8834 | if (!bfd_check_format (sym_bfd, bfd_object)) | |
8835 | { | |
cbb099e8 | 8836 | gdb_bfd_unref (sym_bfd); /* This also closes desc. */ |
3019eac3 DE |
8837 | return NULL; |
8838 | } | |
8839 | ||
3019eac3 DE |
8840 | return sym_bfd; |
8841 | } | |
8842 | ||
80626a55 | 8843 | /* Try to open DWO/DWP file FILE_NAME. |
3019eac3 | 8844 | COMP_DIR is the DW_AT_comp_dir attribute. |
80626a55 | 8845 | If IS_DWP is TRUE, we're opening a DWP file, otherwise a DWO file. |
3019eac3 DE |
8846 | The result is the bfd handle of the file. |
8847 | If there is a problem finding or opening the file, return NULL. | |
8848 | Upon success, the canonicalized path of the file is stored in the bfd, | |
8849 | same as symfile_bfd_open. */ | |
8850 | ||
8851 | static bfd * | |
80626a55 | 8852 | open_dwop_file (const char *file_name, const char *comp_dir, int is_dwp) |
3019eac3 DE |
8853 | { |
8854 | bfd *abfd; | |
3019eac3 | 8855 | |
80626a55 DE |
8856 | if (IS_ABSOLUTE_PATH (file_name)) |
8857 | return try_open_dwop_file (file_name, is_dwp); | |
3019eac3 DE |
8858 | |
8859 | /* Before trying the search path, try DWO_NAME in COMP_DIR. */ | |
8860 | ||
8861 | if (comp_dir != NULL) | |
8862 | { | |
80626a55 | 8863 | char *path_to_try = concat (comp_dir, SLASH_STRING, file_name, NULL); |
3019eac3 DE |
8864 | |
8865 | /* NOTE: If comp_dir is a relative path, this will also try the | |
8866 | search path, which seems useful. */ | |
80626a55 | 8867 | abfd = try_open_dwop_file (path_to_try, is_dwp); |
3019eac3 DE |
8868 | xfree (path_to_try); |
8869 | if (abfd != NULL) | |
8870 | return abfd; | |
8871 | } | |
8872 | ||
8873 | /* That didn't work, try debug-file-directory, which, despite its name, | |
8874 | is a list of paths. */ | |
8875 | ||
8876 | if (*debug_file_directory == '\0') | |
8877 | return NULL; | |
8878 | ||
80626a55 | 8879 | return try_open_dwop_file (file_name, is_dwp); |
3019eac3 DE |
8880 | } |
8881 | ||
80626a55 DE |
8882 | /* This function is mapped across the sections and remembers the offset and |
8883 | size of each of the DWO debugging sections we are interested in. */ | |
8884 | ||
8885 | static void | |
8886 | dwarf2_locate_dwo_sections (bfd *abfd, asection *sectp, void *dwo_sections_ptr) | |
8887 | { | |
8888 | struct dwo_sections *dwo_sections = dwo_sections_ptr; | |
8889 | const struct dwop_section_names *names = &dwop_section_names; | |
8890 | ||
8891 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
8892 | { | |
8893 | dwo_sections->abbrev.asection = sectp; | |
8894 | dwo_sections->abbrev.size = bfd_get_section_size (sectp); | |
8895 | } | |
8896 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
8897 | { | |
8898 | dwo_sections->info.asection = sectp; | |
8899 | dwo_sections->info.size = bfd_get_section_size (sectp); | |
8900 | } | |
8901 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
8902 | { | |
8903 | dwo_sections->line.asection = sectp; | |
8904 | dwo_sections->line.size = bfd_get_section_size (sectp); | |
8905 | } | |
8906 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
8907 | { | |
8908 | dwo_sections->loc.asection = sectp; | |
8909 | dwo_sections->loc.size = bfd_get_section_size (sectp); | |
8910 | } | |
8911 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
8912 | { | |
8913 | dwo_sections->macinfo.asection = sectp; | |
8914 | dwo_sections->macinfo.size = bfd_get_section_size (sectp); | |
8915 | } | |
8916 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
8917 | { | |
8918 | dwo_sections->macro.asection = sectp; | |
8919 | dwo_sections->macro.size = bfd_get_section_size (sectp); | |
8920 | } | |
8921 | else if (section_is_p (sectp->name, &names->str_dwo)) | |
8922 | { | |
8923 | dwo_sections->str.asection = sectp; | |
8924 | dwo_sections->str.size = bfd_get_section_size (sectp); | |
8925 | } | |
8926 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
8927 | { | |
8928 | dwo_sections->str_offsets.asection = sectp; | |
8929 | dwo_sections->str_offsets.size = bfd_get_section_size (sectp); | |
8930 | } | |
8931 | else if (section_is_p (sectp->name, &names->types_dwo)) | |
8932 | { | |
8933 | struct dwarf2_section_info type_section; | |
8934 | ||
8935 | memset (&type_section, 0, sizeof (type_section)); | |
8936 | type_section.asection = sectp; | |
8937 | type_section.size = bfd_get_section_size (sectp); | |
8938 | VEC_safe_push (dwarf2_section_info_def, dwo_sections->types, | |
8939 | &type_section); | |
8940 | } | |
8941 | } | |
8942 | ||
8943 | /* Initialize the use of the DWO file specified by DWO_NAME. | |
8944 | The result is NULL if DWO_NAME can't be found. */ | |
3019eac3 DE |
8945 | |
8946 | static struct dwo_file * | |
80626a55 | 8947 | open_and_init_dwo_file (const char *dwo_name, const char *comp_dir) |
3019eac3 DE |
8948 | { |
8949 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
80626a55 DE |
8950 | struct dwo_file *dwo_file; |
8951 | bfd *dbfd; | |
3019eac3 DE |
8952 | struct cleanup *cleanups; |
8953 | ||
80626a55 DE |
8954 | dbfd = open_dwop_file (dwo_name, comp_dir, 0); |
8955 | if (dbfd == NULL) | |
8956 | { | |
8957 | if (dwarf2_read_debug) | |
8958 | fprintf_unfiltered (gdb_stdlog, "DWO file not found: %s\n", dwo_name); | |
8959 | return NULL; | |
8960 | } | |
8961 | dwo_file = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_file); | |
8962 | dwo_file->name = obstack_copy0 (&objfile->objfile_obstack, | |
8963 | dwo_name, strlen (dwo_name)); | |
8964 | dwo_file->dbfd = dbfd; | |
3019eac3 DE |
8965 | |
8966 | cleanups = make_cleanup (free_dwo_file_cleanup, dwo_file); | |
8967 | ||
80626a55 | 8968 | bfd_map_over_sections (dbfd, dwarf2_locate_dwo_sections, &dwo_file->sections); |
3019eac3 | 8969 | |
80626a55 | 8970 | dwo_file->cus = create_dwo_debug_info_hash_table (dwo_file); |
3019eac3 DE |
8971 | |
8972 | dwo_file->tus = create_debug_types_hash_table (dwo_file, | |
8973 | dwo_file->sections.types); | |
8974 | ||
8975 | discard_cleanups (cleanups); | |
8976 | ||
80626a55 DE |
8977 | if (dwarf2_read_debug) |
8978 | fprintf_unfiltered (gdb_stdlog, "DWO file found: %s\n", dwo_name); | |
8979 | ||
3019eac3 DE |
8980 | return dwo_file; |
8981 | } | |
8982 | ||
80626a55 DE |
8983 | /* This function is mapped across the sections and remembers the offset and |
8984 | size of each of the DWP debugging sections we are interested in. */ | |
3019eac3 | 8985 | |
80626a55 DE |
8986 | static void |
8987 | dwarf2_locate_dwp_sections (bfd *abfd, asection *sectp, void *dwp_file_ptr) | |
3019eac3 | 8988 | { |
80626a55 DE |
8989 | struct dwp_file *dwp_file = dwp_file_ptr; |
8990 | const struct dwop_section_names *names = &dwop_section_names; | |
8991 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
3019eac3 | 8992 | |
80626a55 DE |
8993 | /* Record the ELF section number for later lookup: this is what the |
8994 | .debug_cu_index,.debug_tu_index tables use. */ | |
8995 | gdb_assert (elf_section_nr < dwp_file->num_sections); | |
8996 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
3019eac3 | 8997 | |
80626a55 DE |
8998 | /* Look for specific sections that we need. */ |
8999 | if (section_is_p (sectp->name, &names->str_dwo)) | |
9000 | { | |
9001 | dwp_file->sections.str.asection = sectp; | |
9002 | dwp_file->sections.str.size = bfd_get_section_size (sectp); | |
9003 | } | |
9004 | else if (section_is_p (sectp->name, &names->cu_index)) | |
9005 | { | |
9006 | dwp_file->sections.cu_index.asection = sectp; | |
9007 | dwp_file->sections.cu_index.size = bfd_get_section_size (sectp); | |
9008 | } | |
9009 | else if (section_is_p (sectp->name, &names->tu_index)) | |
9010 | { | |
9011 | dwp_file->sections.tu_index.asection = sectp; | |
9012 | dwp_file->sections.tu_index.size = bfd_get_section_size (sectp); | |
9013 | } | |
9014 | } | |
3019eac3 | 9015 | |
80626a55 | 9016 | /* Hash function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 9017 | |
80626a55 DE |
9018 | static hashval_t |
9019 | hash_dwp_loaded_cutus (const void *item) | |
9020 | { | |
9021 | const struct dwo_unit *dwo_unit = item; | |
3019eac3 | 9022 | |
80626a55 DE |
9023 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
9024 | return dwo_unit->signature; | |
3019eac3 DE |
9025 | } |
9026 | ||
80626a55 | 9027 | /* Equality function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 9028 | |
80626a55 DE |
9029 | static int |
9030 | eq_dwp_loaded_cutus (const void *a, const void *b) | |
3019eac3 | 9031 | { |
80626a55 DE |
9032 | const struct dwo_unit *dua = a; |
9033 | const struct dwo_unit *dub = b; | |
3019eac3 | 9034 | |
80626a55 DE |
9035 | return dua->signature == dub->signature; |
9036 | } | |
3019eac3 | 9037 | |
80626a55 | 9038 | /* Allocate a hash table for dwp_file loaded CUs/TUs. */ |
3019eac3 | 9039 | |
80626a55 DE |
9040 | static htab_t |
9041 | allocate_dwp_loaded_cutus_table (struct objfile *objfile) | |
9042 | { | |
9043 | return htab_create_alloc_ex (3, | |
9044 | hash_dwp_loaded_cutus, | |
9045 | eq_dwp_loaded_cutus, | |
9046 | NULL, | |
9047 | &objfile->objfile_obstack, | |
9048 | hashtab_obstack_allocate, | |
9049 | dummy_obstack_deallocate); | |
9050 | } | |
3019eac3 | 9051 | |
80626a55 DE |
9052 | /* Initialize the use of the DWP file for the current objfile. |
9053 | By convention the name of the DWP file is ${objfile}.dwp. | |
9054 | The result is NULL if it can't be found. */ | |
a766d390 | 9055 | |
80626a55 DE |
9056 | static struct dwp_file * |
9057 | open_and_init_dwp_file (const char *comp_dir) | |
9058 | { | |
9059 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
9060 | struct dwp_file *dwp_file; | |
9061 | char *dwp_name; | |
9062 | bfd *dbfd; | |
9063 | struct cleanup *cleanups; | |
9064 | ||
2792b94d | 9065 | dwp_name = xstrprintf ("%s.dwp", dwarf2_per_objfile->objfile->name); |
80626a55 DE |
9066 | cleanups = make_cleanup (xfree, dwp_name); |
9067 | ||
9068 | dbfd = open_dwop_file (dwp_name, comp_dir, 1); | |
9069 | if (dbfd == NULL) | |
9070 | { | |
9071 | if (dwarf2_read_debug) | |
9072 | fprintf_unfiltered (gdb_stdlog, "DWP file not found: %s\n", dwp_name); | |
9073 | do_cleanups (cleanups); | |
9074 | return NULL; | |
3019eac3 | 9075 | } |
80626a55 DE |
9076 | dwp_file = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwp_file); |
9077 | dwp_file->name = obstack_copy0 (&objfile->objfile_obstack, | |
9078 | dwp_name, strlen (dwp_name)); | |
9079 | dwp_file->dbfd = dbfd; | |
9080 | do_cleanups (cleanups); | |
c906108c | 9081 | |
80626a55 | 9082 | cleanups = make_cleanup (free_dwo_file_cleanup, dwp_file); |
df8a16a1 | 9083 | |
80626a55 DE |
9084 | /* +1: section 0 is unused */ |
9085 | dwp_file->num_sections = bfd_count_sections (dbfd) + 1; | |
9086 | dwp_file->elf_sections = | |
9087 | OBSTACK_CALLOC (&objfile->objfile_obstack, | |
9088 | dwp_file->num_sections, asection *); | |
9089 | ||
9090 | bfd_map_over_sections (dbfd, dwarf2_locate_dwp_sections, dwp_file); | |
9091 | ||
9092 | dwp_file->cus = create_dwp_hash_table (dwp_file, 0); | |
9093 | ||
9094 | dwp_file->tus = create_dwp_hash_table (dwp_file, 1); | |
9095 | ||
9096 | dwp_file->loaded_cutus = allocate_dwp_loaded_cutus_table (objfile); | |
9097 | ||
9098 | discard_cleanups (cleanups); | |
9099 | ||
9100 | if (dwarf2_read_debug) | |
9101 | { | |
9102 | fprintf_unfiltered (gdb_stdlog, "DWP file found: %s\n", dwp_file->name); | |
9103 | fprintf_unfiltered (gdb_stdlog, | |
9104 | " %u CUs, %u TUs\n", | |
9105 | dwp_file->cus ? dwp_file->cus->nr_units : 0, | |
9106 | dwp_file->tus ? dwp_file->tus->nr_units : 0); | |
9107 | } | |
9108 | ||
9109 | return dwp_file; | |
3019eac3 | 9110 | } |
c906108c | 9111 | |
80626a55 DE |
9112 | /* Subroutine of lookup_dwo_comp_unit, lookup_dwo_type_unit. |
9113 | Look up the CU/TU with signature SIGNATURE, either in DWO file DWO_NAME | |
9114 | or in the DWP file for the objfile, referenced by THIS_UNIT. | |
3019eac3 | 9115 | If non-NULL, comp_dir is the DW_AT_comp_dir attribute. |
80626a55 DE |
9116 | IS_DEBUG_TYPES is non-zero if reading a TU, otherwise read a CU. |
9117 | ||
9118 | This is called, for example, when wanting to read a variable with a | |
9119 | complex location. Therefore we don't want to do file i/o for every call. | |
9120 | Therefore we don't want to look for a DWO file on every call. | |
9121 | Therefore we first see if we've already seen SIGNATURE in a DWP file, | |
9122 | then we check if we've already seen DWO_NAME, and only THEN do we check | |
9123 | for a DWO file. | |
9124 | ||
1c658ad5 | 9125 | The result is a pointer to the dwo_unit object or NULL if we didn't find it |
80626a55 | 9126 | (dwo_id mismatch or couldn't find the DWO/DWP file). */ |
debd256d | 9127 | |
3019eac3 | 9128 | static struct dwo_unit * |
80626a55 DE |
9129 | lookup_dwo_cutu (struct dwarf2_per_cu_data *this_unit, |
9130 | const char *dwo_name, const char *comp_dir, | |
9131 | ULONGEST signature, int is_debug_types) | |
3019eac3 DE |
9132 | { |
9133 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
80626a55 DE |
9134 | const char *kind = is_debug_types ? "TU" : "CU"; |
9135 | void **dwo_file_slot; | |
3019eac3 | 9136 | struct dwo_file *dwo_file; |
80626a55 | 9137 | struct dwp_file *dwp_file; |
cb1df416 | 9138 | |
80626a55 | 9139 | /* Have we already read SIGNATURE from a DWP file? */ |
cf2c3c16 | 9140 | |
80626a55 DE |
9141 | if (! dwarf2_per_objfile->dwp_checked) |
9142 | { | |
9143 | dwarf2_per_objfile->dwp_file = open_and_init_dwp_file (comp_dir); | |
9144 | dwarf2_per_objfile->dwp_checked = 1; | |
9145 | } | |
9146 | dwp_file = dwarf2_per_objfile->dwp_file; | |
3019eac3 | 9147 | |
80626a55 | 9148 | if (dwp_file != NULL) |
cf2c3c16 | 9149 | { |
80626a55 DE |
9150 | const struct dwp_hash_table *dwp_htab = |
9151 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
9152 | ||
9153 | if (dwp_htab != NULL) | |
9154 | { | |
9155 | struct dwo_unit *dwo_cutu = | |
9156 | lookup_dwo_in_dwp (dwp_file, dwp_htab, signature, is_debug_types); | |
9157 | ||
9158 | if (dwo_cutu != NULL) | |
9159 | { | |
9160 | if (dwarf2_read_debug) | |
9161 | { | |
9162 | fprintf_unfiltered (gdb_stdlog, | |
9163 | "Virtual DWO %s %s found: @%s\n", | |
9164 | kind, hex_string (signature), | |
9165 | host_address_to_string (dwo_cutu)); | |
9166 | } | |
9167 | return dwo_cutu; | |
9168 | } | |
9169 | } | |
9170 | } | |
9171 | ||
9172 | /* Have we already seen DWO_NAME? */ | |
9173 | ||
9174 | dwo_file_slot = lookup_dwo_file_slot (dwo_name); | |
9175 | if (*dwo_file_slot == NULL) | |
9176 | { | |
9177 | /* Read in the file and build a table of the DWOs it contains. */ | |
9178 | *dwo_file_slot = open_and_init_dwo_file (dwo_name, comp_dir); | |
9179 | } | |
9180 | /* NOTE: This will be NULL if unable to open the file. */ | |
9181 | dwo_file = *dwo_file_slot; | |
9182 | ||
9183 | if (dwo_file != NULL) | |
9184 | { | |
9185 | htab_t htab = is_debug_types ? dwo_file->tus : dwo_file->cus; | |
9186 | ||
9187 | if (htab != NULL) | |
9188 | { | |
9189 | struct dwo_unit find_dwo_cutu, *dwo_cutu; | |
9a619af0 | 9190 | |
80626a55 DE |
9191 | memset (&find_dwo_cutu, 0, sizeof (find_dwo_cutu)); |
9192 | find_dwo_cutu.signature = signature; | |
9193 | dwo_cutu = htab_find (htab, &find_dwo_cutu); | |
3019eac3 | 9194 | |
80626a55 DE |
9195 | if (dwo_cutu != NULL) |
9196 | { | |
9197 | if (dwarf2_read_debug) | |
9198 | { | |
9199 | fprintf_unfiltered (gdb_stdlog, "DWO %s %s(%s) found: @%s\n", | |
9200 | kind, dwo_name, hex_string (signature), | |
9201 | host_address_to_string (dwo_cutu)); | |
9202 | } | |
9203 | return dwo_cutu; | |
9204 | } | |
9205 | } | |
2e276125 | 9206 | } |
9cdd5dbd | 9207 | |
80626a55 DE |
9208 | /* We didn't find it. This could mean a dwo_id mismatch, or |
9209 | someone deleted the DWO/DWP file, or the search path isn't set up | |
9210 | correctly to find the file. */ | |
9211 | ||
9212 | if (dwarf2_read_debug) | |
9213 | { | |
9214 | fprintf_unfiltered (gdb_stdlog, "DWO %s %s(%s) not found\n", | |
9215 | kind, dwo_name, hex_string (signature)); | |
9216 | } | |
3019eac3 DE |
9217 | |
9218 | complaint (&symfile_complaints, | |
80626a55 | 9219 | _("Could not find DWO CU referenced by CU at offset 0x%x" |
3019eac3 | 9220 | " [in module %s]"), |
80626a55 | 9221 | this_unit->offset.sect_off, objfile->name); |
3019eac3 | 9222 | return NULL; |
5fb290d7 DJ |
9223 | } |
9224 | ||
80626a55 DE |
9225 | /* Lookup the DWO CU DWO_NAME/SIGNATURE referenced from THIS_CU. |
9226 | See lookup_dwo_cutu_unit for details. */ | |
9227 | ||
9228 | static struct dwo_unit * | |
9229 | lookup_dwo_comp_unit (struct dwarf2_per_cu_data *this_cu, | |
9230 | const char *dwo_name, const char *comp_dir, | |
9231 | ULONGEST signature) | |
9232 | { | |
9233 | return lookup_dwo_cutu (this_cu, dwo_name, comp_dir, signature, 0); | |
9234 | } | |
9235 | ||
9236 | /* Lookup the DWO TU DWO_NAME/SIGNATURE referenced from THIS_TU. | |
9237 | See lookup_dwo_cutu_unit for details. */ | |
9238 | ||
9239 | static struct dwo_unit * | |
9240 | lookup_dwo_type_unit (struct signatured_type *this_tu, | |
9241 | const char *dwo_name, const char *comp_dir) | |
9242 | { | |
9243 | return lookup_dwo_cutu (&this_tu->per_cu, dwo_name, comp_dir, this_tu->signature, 1); | |
9244 | } | |
9245 | ||
3019eac3 DE |
9246 | /* Free all resources associated with DWO_FILE. |
9247 | Close the DWO file and munmap the sections. | |
9248 | All memory should be on the objfile obstack. */ | |
348e048f DE |
9249 | |
9250 | static void | |
3019eac3 | 9251 | free_dwo_file (struct dwo_file *dwo_file, struct objfile *objfile) |
348e048f | 9252 | { |
3019eac3 DE |
9253 | int ix; |
9254 | struct dwarf2_section_info *section; | |
348e048f | 9255 | |
80626a55 | 9256 | gdb_bfd_unref (dwo_file->dbfd); |
348e048f | 9257 | |
3019eac3 DE |
9258 | VEC_free (dwarf2_section_info_def, dwo_file->sections.types); |
9259 | } | |
348e048f | 9260 | |
3019eac3 | 9261 | /* Wrapper for free_dwo_file for use in cleanups. */ |
348e048f | 9262 | |
3019eac3 DE |
9263 | static void |
9264 | free_dwo_file_cleanup (void *arg) | |
9265 | { | |
9266 | struct dwo_file *dwo_file = (struct dwo_file *) arg; | |
9267 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
348e048f | 9268 | |
3019eac3 DE |
9269 | free_dwo_file (dwo_file, objfile); |
9270 | } | |
348e048f | 9271 | |
3019eac3 | 9272 | /* Traversal function for free_dwo_files. */ |
2ab95328 | 9273 | |
3019eac3 DE |
9274 | static int |
9275 | free_dwo_file_from_slot (void **slot, void *info) | |
9276 | { | |
9277 | struct dwo_file *dwo_file = (struct dwo_file *) *slot; | |
9278 | struct objfile *objfile = (struct objfile *) info; | |
348e048f | 9279 | |
3019eac3 | 9280 | free_dwo_file (dwo_file, objfile); |
348e048f | 9281 | |
3019eac3 DE |
9282 | return 1; |
9283 | } | |
348e048f | 9284 | |
3019eac3 | 9285 | /* Free all resources associated with DWO_FILES. */ |
348e048f | 9286 | |
3019eac3 DE |
9287 | static void |
9288 | free_dwo_files (htab_t dwo_files, struct objfile *objfile) | |
9289 | { | |
9290 | htab_traverse_noresize (dwo_files, free_dwo_file_from_slot, objfile); | |
348e048f | 9291 | } |
3019eac3 DE |
9292 | \f |
9293 | /* Read in various DIEs. */ | |
348e048f | 9294 | |
d389af10 JK |
9295 | /* qsort helper for inherit_abstract_dies. */ |
9296 | ||
9297 | static int | |
9298 | unsigned_int_compar (const void *ap, const void *bp) | |
9299 | { | |
9300 | unsigned int a = *(unsigned int *) ap; | |
9301 | unsigned int b = *(unsigned int *) bp; | |
9302 | ||
9303 | return (a > b) - (b > a); | |
9304 | } | |
9305 | ||
9306 | /* DW_AT_abstract_origin inherits whole DIEs (not just their attributes). | |
3e43a32a MS |
9307 | Inherit only the children of the DW_AT_abstract_origin DIE not being |
9308 | already referenced by DW_AT_abstract_origin from the children of the | |
9309 | current DIE. */ | |
d389af10 JK |
9310 | |
9311 | static void | |
9312 | inherit_abstract_dies (struct die_info *die, struct dwarf2_cu *cu) | |
9313 | { | |
9314 | struct die_info *child_die; | |
9315 | unsigned die_children_count; | |
9316 | /* CU offsets which were referenced by children of the current DIE. */ | |
b64f50a1 JK |
9317 | sect_offset *offsets; |
9318 | sect_offset *offsets_end, *offsetp; | |
d389af10 JK |
9319 | /* Parent of DIE - referenced by DW_AT_abstract_origin. */ |
9320 | struct die_info *origin_die; | |
9321 | /* Iterator of the ORIGIN_DIE children. */ | |
9322 | struct die_info *origin_child_die; | |
9323 | struct cleanup *cleanups; | |
9324 | struct attribute *attr; | |
cd02d79d PA |
9325 | struct dwarf2_cu *origin_cu; |
9326 | struct pending **origin_previous_list_in_scope; | |
d389af10 JK |
9327 | |
9328 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
9329 | if (!attr) | |
9330 | return; | |
9331 | ||
cd02d79d PA |
9332 | /* Note that following die references may follow to a die in a |
9333 | different cu. */ | |
9334 | ||
9335 | origin_cu = cu; | |
9336 | origin_die = follow_die_ref (die, attr, &origin_cu); | |
9337 | ||
9338 | /* We're inheriting ORIGIN's children into the scope we'd put DIE's | |
9339 | symbols in. */ | |
9340 | origin_previous_list_in_scope = origin_cu->list_in_scope; | |
9341 | origin_cu->list_in_scope = cu->list_in_scope; | |
9342 | ||
edb3359d DJ |
9343 | if (die->tag != origin_die->tag |
9344 | && !(die->tag == DW_TAG_inlined_subroutine | |
9345 | && origin_die->tag == DW_TAG_subprogram)) | |
d389af10 JK |
9346 | complaint (&symfile_complaints, |
9347 | _("DIE 0x%x and its abstract origin 0x%x have different tags"), | |
b64f50a1 | 9348 | die->offset.sect_off, origin_die->offset.sect_off); |
d389af10 JK |
9349 | |
9350 | child_die = die->child; | |
9351 | die_children_count = 0; | |
9352 | while (child_die && child_die->tag) | |
9353 | { | |
9354 | child_die = sibling_die (child_die); | |
9355 | die_children_count++; | |
9356 | } | |
9357 | offsets = xmalloc (sizeof (*offsets) * die_children_count); | |
9358 | cleanups = make_cleanup (xfree, offsets); | |
9359 | ||
9360 | offsets_end = offsets; | |
9361 | child_die = die->child; | |
9362 | while (child_die && child_die->tag) | |
9363 | { | |
c38f313d DJ |
9364 | /* For each CHILD_DIE, find the corresponding child of |
9365 | ORIGIN_DIE. If there is more than one layer of | |
9366 | DW_AT_abstract_origin, follow them all; there shouldn't be, | |
9367 | but GCC versions at least through 4.4 generate this (GCC PR | |
9368 | 40573). */ | |
9369 | struct die_info *child_origin_die = child_die; | |
cd02d79d | 9370 | struct dwarf2_cu *child_origin_cu = cu; |
9a619af0 | 9371 | |
c38f313d DJ |
9372 | while (1) |
9373 | { | |
cd02d79d PA |
9374 | attr = dwarf2_attr (child_origin_die, DW_AT_abstract_origin, |
9375 | child_origin_cu); | |
c38f313d DJ |
9376 | if (attr == NULL) |
9377 | break; | |
cd02d79d PA |
9378 | child_origin_die = follow_die_ref (child_origin_die, attr, |
9379 | &child_origin_cu); | |
c38f313d DJ |
9380 | } |
9381 | ||
d389af10 JK |
9382 | /* According to DWARF3 3.3.8.2 #3 new entries without their abstract |
9383 | counterpart may exist. */ | |
c38f313d | 9384 | if (child_origin_die != child_die) |
d389af10 | 9385 | { |
edb3359d DJ |
9386 | if (child_die->tag != child_origin_die->tag |
9387 | && !(child_die->tag == DW_TAG_inlined_subroutine | |
9388 | && child_origin_die->tag == DW_TAG_subprogram)) | |
d389af10 JK |
9389 | complaint (&symfile_complaints, |
9390 | _("Child DIE 0x%x and its abstract origin 0x%x have " | |
b64f50a1 JK |
9391 | "different tags"), child_die->offset.sect_off, |
9392 | child_origin_die->offset.sect_off); | |
c38f313d DJ |
9393 | if (child_origin_die->parent != origin_die) |
9394 | complaint (&symfile_complaints, | |
9395 | _("Child DIE 0x%x and its abstract origin 0x%x have " | |
b64f50a1 JK |
9396 | "different parents"), child_die->offset.sect_off, |
9397 | child_origin_die->offset.sect_off); | |
c38f313d DJ |
9398 | else |
9399 | *offsets_end++ = child_origin_die->offset; | |
d389af10 JK |
9400 | } |
9401 | child_die = sibling_die (child_die); | |
9402 | } | |
9403 | qsort (offsets, offsets_end - offsets, sizeof (*offsets), | |
9404 | unsigned_int_compar); | |
9405 | for (offsetp = offsets + 1; offsetp < offsets_end; offsetp++) | |
b64f50a1 | 9406 | if (offsetp[-1].sect_off == offsetp->sect_off) |
3e43a32a MS |
9407 | complaint (&symfile_complaints, |
9408 | _("Multiple children of DIE 0x%x refer " | |
9409 | "to DIE 0x%x as their abstract origin"), | |
b64f50a1 | 9410 | die->offset.sect_off, offsetp->sect_off); |
d389af10 JK |
9411 | |
9412 | offsetp = offsets; | |
9413 | origin_child_die = origin_die->child; | |
9414 | while (origin_child_die && origin_child_die->tag) | |
9415 | { | |
9416 | /* Is ORIGIN_CHILD_DIE referenced by any of the DIE children? */ | |
b64f50a1 JK |
9417 | while (offsetp < offsets_end |
9418 | && offsetp->sect_off < origin_child_die->offset.sect_off) | |
d389af10 | 9419 | offsetp++; |
b64f50a1 JK |
9420 | if (offsetp >= offsets_end |
9421 | || offsetp->sect_off > origin_child_die->offset.sect_off) | |
d389af10 JK |
9422 | { |
9423 | /* Found that ORIGIN_CHILD_DIE is really not referenced. */ | |
cd02d79d | 9424 | process_die (origin_child_die, origin_cu); |
d389af10 JK |
9425 | } |
9426 | origin_child_die = sibling_die (origin_child_die); | |
9427 | } | |
cd02d79d | 9428 | origin_cu->list_in_scope = origin_previous_list_in_scope; |
d389af10 JK |
9429 | |
9430 | do_cleanups (cleanups); | |
9431 | } | |
9432 | ||
c906108c | 9433 | static void |
e7c27a73 | 9434 | read_func_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 9435 | { |
e7c27a73 | 9436 | struct objfile *objfile = cu->objfile; |
52f0bd74 | 9437 | struct context_stack *new; |
c906108c SS |
9438 | CORE_ADDR lowpc; |
9439 | CORE_ADDR highpc; | |
9440 | struct die_info *child_die; | |
edb3359d | 9441 | struct attribute *attr, *call_line, *call_file; |
15d034d0 | 9442 | const char *name; |
e142c38c | 9443 | CORE_ADDR baseaddr; |
801e3a5b | 9444 | struct block *block; |
edb3359d | 9445 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
34eaf542 TT |
9446 | VEC (symbolp) *template_args = NULL; |
9447 | struct template_symbol *templ_func = NULL; | |
edb3359d DJ |
9448 | |
9449 | if (inlined_func) | |
9450 | { | |
9451 | /* If we do not have call site information, we can't show the | |
9452 | caller of this inlined function. That's too confusing, so | |
9453 | only use the scope for local variables. */ | |
9454 | call_line = dwarf2_attr (die, DW_AT_call_line, cu); | |
9455 | call_file = dwarf2_attr (die, DW_AT_call_file, cu); | |
9456 | if (call_line == NULL || call_file == NULL) | |
9457 | { | |
9458 | read_lexical_block_scope (die, cu); | |
9459 | return; | |
9460 | } | |
9461 | } | |
c906108c | 9462 | |
e142c38c DJ |
9463 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
9464 | ||
94af9270 | 9465 | name = dwarf2_name (die, cu); |
c906108c | 9466 | |
e8d05480 JB |
9467 | /* Ignore functions with missing or empty names. These are actually |
9468 | illegal according to the DWARF standard. */ | |
9469 | if (name == NULL) | |
9470 | { | |
9471 | complaint (&symfile_complaints, | |
b64f50a1 JK |
9472 | _("missing name for subprogram DIE at %d"), |
9473 | die->offset.sect_off); | |
e8d05480 JB |
9474 | return; |
9475 | } | |
9476 | ||
9477 | /* Ignore functions with missing or invalid low and high pc attributes. */ | |
9478 | if (!dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL)) | |
9479 | { | |
ae4d0c03 PM |
9480 | attr = dwarf2_attr (die, DW_AT_external, cu); |
9481 | if (!attr || !DW_UNSND (attr)) | |
9482 | complaint (&symfile_complaints, | |
3e43a32a MS |
9483 | _("cannot get low and high bounds " |
9484 | "for subprogram DIE at %d"), | |
b64f50a1 | 9485 | die->offset.sect_off); |
e8d05480 JB |
9486 | return; |
9487 | } | |
c906108c SS |
9488 | |
9489 | lowpc += baseaddr; | |
9490 | highpc += baseaddr; | |
9491 | ||
34eaf542 TT |
9492 | /* If we have any template arguments, then we must allocate a |
9493 | different sort of symbol. */ | |
9494 | for (child_die = die->child; child_die; child_die = sibling_die (child_die)) | |
9495 | { | |
9496 | if (child_die->tag == DW_TAG_template_type_param | |
9497 | || child_die->tag == DW_TAG_template_value_param) | |
9498 | { | |
9499 | templ_func = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
9500 | struct template_symbol); | |
9501 | templ_func->base.is_cplus_template_function = 1; | |
9502 | break; | |
9503 | } | |
9504 | } | |
9505 | ||
c906108c | 9506 | new = push_context (0, lowpc); |
34eaf542 TT |
9507 | new->name = new_symbol_full (die, read_type_die (die, cu), cu, |
9508 | (struct symbol *) templ_func); | |
4c2df51b | 9509 | |
4cecd739 DJ |
9510 | /* If there is a location expression for DW_AT_frame_base, record |
9511 | it. */ | |
e142c38c | 9512 | attr = dwarf2_attr (die, DW_AT_frame_base, cu); |
4c2df51b | 9513 | if (attr) |
c034e007 AC |
9514 | /* FIXME: cagney/2004-01-26: The DW_AT_frame_base's location |
9515 | expression is being recorded directly in the function's symbol | |
9516 | and not in a separate frame-base object. I guess this hack is | |
9517 | to avoid adding some sort of frame-base adjunct/annex to the | |
9518 | function's symbol :-(. The problem with doing this is that it | |
9519 | results in a function symbol with a location expression that | |
9520 | has nothing to do with the location of the function, ouch! The | |
9521 | relationship should be: a function's symbol has-a frame base; a | |
9522 | frame-base has-a location expression. */ | |
e7c27a73 | 9523 | dwarf2_symbol_mark_computed (attr, new->name, cu); |
4c2df51b | 9524 | |
e142c38c | 9525 | cu->list_in_scope = &local_symbols; |
c906108c | 9526 | |
639d11d3 | 9527 | if (die->child != NULL) |
c906108c | 9528 | { |
639d11d3 | 9529 | child_die = die->child; |
c906108c SS |
9530 | while (child_die && child_die->tag) |
9531 | { | |
34eaf542 TT |
9532 | if (child_die->tag == DW_TAG_template_type_param |
9533 | || child_die->tag == DW_TAG_template_value_param) | |
9534 | { | |
9535 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
9536 | ||
f1078f66 DJ |
9537 | if (arg != NULL) |
9538 | VEC_safe_push (symbolp, template_args, arg); | |
34eaf542 TT |
9539 | } |
9540 | else | |
9541 | process_die (child_die, cu); | |
c906108c SS |
9542 | child_die = sibling_die (child_die); |
9543 | } | |
9544 | } | |
9545 | ||
d389af10 JK |
9546 | inherit_abstract_dies (die, cu); |
9547 | ||
4a811a97 UW |
9548 | /* If we have a DW_AT_specification, we might need to import using |
9549 | directives from the context of the specification DIE. See the | |
9550 | comment in determine_prefix. */ | |
9551 | if (cu->language == language_cplus | |
9552 | && dwarf2_attr (die, DW_AT_specification, cu)) | |
9553 | { | |
9554 | struct dwarf2_cu *spec_cu = cu; | |
9555 | struct die_info *spec_die = die_specification (die, &spec_cu); | |
9556 | ||
9557 | while (spec_die) | |
9558 | { | |
9559 | child_die = spec_die->child; | |
9560 | while (child_die && child_die->tag) | |
9561 | { | |
9562 | if (child_die->tag == DW_TAG_imported_module) | |
9563 | process_die (child_die, spec_cu); | |
9564 | child_die = sibling_die (child_die); | |
9565 | } | |
9566 | ||
9567 | /* In some cases, GCC generates specification DIEs that | |
9568 | themselves contain DW_AT_specification attributes. */ | |
9569 | spec_die = die_specification (spec_die, &spec_cu); | |
9570 | } | |
9571 | } | |
9572 | ||
c906108c SS |
9573 | new = pop_context (); |
9574 | /* Make a block for the local symbols within. */ | |
801e3a5b JB |
9575 | block = finish_block (new->name, &local_symbols, new->old_blocks, |
9576 | lowpc, highpc, objfile); | |
9577 | ||
df8a16a1 | 9578 | /* For C++, set the block's scope. */ |
195a3f6c | 9579 | if ((cu->language == language_cplus || cu->language == language_fortran) |
4d4ec4e5 | 9580 | && cu->processing_has_namespace_info) |
195a3f6c TT |
9581 | block_set_scope (block, determine_prefix (die, cu), |
9582 | &objfile->objfile_obstack); | |
df8a16a1 | 9583 | |
801e3a5b JB |
9584 | /* If we have address ranges, record them. */ |
9585 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
6e70227d | 9586 | |
34eaf542 TT |
9587 | /* Attach template arguments to function. */ |
9588 | if (! VEC_empty (symbolp, template_args)) | |
9589 | { | |
9590 | gdb_assert (templ_func != NULL); | |
9591 | ||
9592 | templ_func->n_template_arguments = VEC_length (symbolp, template_args); | |
9593 | templ_func->template_arguments | |
9594 | = obstack_alloc (&objfile->objfile_obstack, | |
9595 | (templ_func->n_template_arguments | |
9596 | * sizeof (struct symbol *))); | |
9597 | memcpy (templ_func->template_arguments, | |
9598 | VEC_address (symbolp, template_args), | |
9599 | (templ_func->n_template_arguments * sizeof (struct symbol *))); | |
9600 | VEC_free (symbolp, template_args); | |
9601 | } | |
9602 | ||
208d8187 JB |
9603 | /* In C++, we can have functions nested inside functions (e.g., when |
9604 | a function declares a class that has methods). This means that | |
9605 | when we finish processing a function scope, we may need to go | |
9606 | back to building a containing block's symbol lists. */ | |
9607 | local_symbols = new->locals; | |
27aa8d6a | 9608 | using_directives = new->using_directives; |
208d8187 | 9609 | |
921e78cf JB |
9610 | /* If we've finished processing a top-level function, subsequent |
9611 | symbols go in the file symbol list. */ | |
9612 | if (outermost_context_p ()) | |
e142c38c | 9613 | cu->list_in_scope = &file_symbols; |
c906108c SS |
9614 | } |
9615 | ||
9616 | /* Process all the DIES contained within a lexical block scope. Start | |
9617 | a new scope, process the dies, and then close the scope. */ | |
9618 | ||
9619 | static void | |
e7c27a73 | 9620 | read_lexical_block_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 9621 | { |
e7c27a73 | 9622 | struct objfile *objfile = cu->objfile; |
52f0bd74 | 9623 | struct context_stack *new; |
c906108c SS |
9624 | CORE_ADDR lowpc, highpc; |
9625 | struct die_info *child_die; | |
e142c38c DJ |
9626 | CORE_ADDR baseaddr; |
9627 | ||
9628 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c SS |
9629 | |
9630 | /* Ignore blocks with missing or invalid low and high pc attributes. */ | |
af34e669 DJ |
9631 | /* ??? Perhaps consider discontiguous blocks defined by DW_AT_ranges |
9632 | as multiple lexical blocks? Handling children in a sane way would | |
6e70227d | 9633 | be nasty. Might be easier to properly extend generic blocks to |
af34e669 | 9634 | describe ranges. */ |
d85a05f0 | 9635 | if (!dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL)) |
c906108c SS |
9636 | return; |
9637 | lowpc += baseaddr; | |
9638 | highpc += baseaddr; | |
9639 | ||
9640 | push_context (0, lowpc); | |
639d11d3 | 9641 | if (die->child != NULL) |
c906108c | 9642 | { |
639d11d3 | 9643 | child_die = die->child; |
c906108c SS |
9644 | while (child_die && child_die->tag) |
9645 | { | |
e7c27a73 | 9646 | process_die (child_die, cu); |
c906108c SS |
9647 | child_die = sibling_die (child_die); |
9648 | } | |
9649 | } | |
9650 | new = pop_context (); | |
9651 | ||
8540c487 | 9652 | if (local_symbols != NULL || using_directives != NULL) |
c906108c | 9653 | { |
801e3a5b JB |
9654 | struct block *block |
9655 | = finish_block (0, &local_symbols, new->old_blocks, new->start_addr, | |
9656 | highpc, objfile); | |
9657 | ||
9658 | /* Note that recording ranges after traversing children, as we | |
9659 | do here, means that recording a parent's ranges entails | |
9660 | walking across all its children's ranges as they appear in | |
9661 | the address map, which is quadratic behavior. | |
9662 | ||
9663 | It would be nicer to record the parent's ranges before | |
9664 | traversing its children, simply overriding whatever you find | |
9665 | there. But since we don't even decide whether to create a | |
9666 | block until after we've traversed its children, that's hard | |
9667 | to do. */ | |
9668 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
c906108c SS |
9669 | } |
9670 | local_symbols = new->locals; | |
27aa8d6a | 9671 | using_directives = new->using_directives; |
c906108c SS |
9672 | } |
9673 | ||
96408a79 SA |
9674 | /* Read in DW_TAG_GNU_call_site and insert it to CU->call_site_htab. */ |
9675 | ||
9676 | static void | |
9677 | read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu) | |
9678 | { | |
9679 | struct objfile *objfile = cu->objfile; | |
9680 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
9681 | CORE_ADDR pc, baseaddr; | |
9682 | struct attribute *attr; | |
9683 | struct call_site *call_site, call_site_local; | |
9684 | void **slot; | |
9685 | int nparams; | |
9686 | struct die_info *child_die; | |
9687 | ||
9688 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
9689 | ||
9690 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
9691 | if (!attr) | |
9692 | { | |
9693 | complaint (&symfile_complaints, | |
9694 | _("missing DW_AT_low_pc for DW_TAG_GNU_call_site " | |
9695 | "DIE 0x%x [in module %s]"), | |
b64f50a1 | 9696 | die->offset.sect_off, objfile->name); |
96408a79 SA |
9697 | return; |
9698 | } | |
9699 | pc = DW_ADDR (attr) + baseaddr; | |
9700 | ||
9701 | if (cu->call_site_htab == NULL) | |
9702 | cu->call_site_htab = htab_create_alloc_ex (16, core_addr_hash, core_addr_eq, | |
9703 | NULL, &objfile->objfile_obstack, | |
9704 | hashtab_obstack_allocate, NULL); | |
9705 | call_site_local.pc = pc; | |
9706 | slot = htab_find_slot (cu->call_site_htab, &call_site_local, INSERT); | |
9707 | if (*slot != NULL) | |
9708 | { | |
9709 | complaint (&symfile_complaints, | |
9710 | _("Duplicate PC %s for DW_TAG_GNU_call_site " | |
9711 | "DIE 0x%x [in module %s]"), | |
b64f50a1 | 9712 | paddress (gdbarch, pc), die->offset.sect_off, objfile->name); |
96408a79 SA |
9713 | return; |
9714 | } | |
9715 | ||
9716 | /* Count parameters at the caller. */ | |
9717 | ||
9718 | nparams = 0; | |
9719 | for (child_die = die->child; child_die && child_die->tag; | |
9720 | child_die = sibling_die (child_die)) | |
9721 | { | |
9722 | if (child_die->tag != DW_TAG_GNU_call_site_parameter) | |
9723 | { | |
9724 | complaint (&symfile_complaints, | |
9725 | _("Tag %d is not DW_TAG_GNU_call_site_parameter in " | |
9726 | "DW_TAG_GNU_call_site child DIE 0x%x [in module %s]"), | |
b64f50a1 | 9727 | child_die->tag, child_die->offset.sect_off, objfile->name); |
96408a79 SA |
9728 | continue; |
9729 | } | |
9730 | ||
9731 | nparams++; | |
9732 | } | |
9733 | ||
9734 | call_site = obstack_alloc (&objfile->objfile_obstack, | |
9735 | (sizeof (*call_site) | |
9736 | + (sizeof (*call_site->parameter) | |
9737 | * (nparams - 1)))); | |
9738 | *slot = call_site; | |
9739 | memset (call_site, 0, sizeof (*call_site) - sizeof (*call_site->parameter)); | |
9740 | call_site->pc = pc; | |
9741 | ||
9742 | if (dwarf2_flag_true_p (die, DW_AT_GNU_tail_call, cu)) | |
9743 | { | |
9744 | struct die_info *func_die; | |
9745 | ||
9746 | /* Skip also over DW_TAG_inlined_subroutine. */ | |
9747 | for (func_die = die->parent; | |
9748 | func_die && func_die->tag != DW_TAG_subprogram | |
9749 | && func_die->tag != DW_TAG_subroutine_type; | |
9750 | func_die = func_die->parent); | |
9751 | ||
9752 | /* DW_AT_GNU_all_call_sites is a superset | |
9753 | of DW_AT_GNU_all_tail_call_sites. */ | |
9754 | if (func_die | |
9755 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_call_sites, cu) | |
9756 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_tail_call_sites, cu)) | |
9757 | { | |
9758 | /* TYPE_TAIL_CALL_LIST is not interesting in functions where it is | |
9759 | not complete. But keep CALL_SITE for look ups via call_site_htab, | |
9760 | both the initial caller containing the real return address PC and | |
9761 | the final callee containing the current PC of a chain of tail | |
9762 | calls do not need to have the tail call list complete. But any | |
9763 | function candidate for a virtual tail call frame searched via | |
9764 | TYPE_TAIL_CALL_LIST must have the tail call list complete to be | |
9765 | determined unambiguously. */ | |
9766 | } | |
9767 | else | |
9768 | { | |
9769 | struct type *func_type = NULL; | |
9770 | ||
9771 | if (func_die) | |
9772 | func_type = get_die_type (func_die, cu); | |
9773 | if (func_type != NULL) | |
9774 | { | |
9775 | gdb_assert (TYPE_CODE (func_type) == TYPE_CODE_FUNC); | |
9776 | ||
9777 | /* Enlist this call site to the function. */ | |
9778 | call_site->tail_call_next = TYPE_TAIL_CALL_LIST (func_type); | |
9779 | TYPE_TAIL_CALL_LIST (func_type) = call_site; | |
9780 | } | |
9781 | else | |
9782 | complaint (&symfile_complaints, | |
9783 | _("Cannot find function owning DW_TAG_GNU_call_site " | |
9784 | "DIE 0x%x [in module %s]"), | |
b64f50a1 | 9785 | die->offset.sect_off, objfile->name); |
96408a79 SA |
9786 | } |
9787 | } | |
9788 | ||
9789 | attr = dwarf2_attr (die, DW_AT_GNU_call_site_target, cu); | |
9790 | if (attr == NULL) | |
9791 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
9792 | SET_FIELD_DWARF_BLOCK (call_site->target, NULL); | |
9793 | if (!attr || (attr_form_is_block (attr) && DW_BLOCK (attr)->size == 0)) | |
9794 | /* Keep NULL DWARF_BLOCK. */; | |
9795 | else if (attr_form_is_block (attr)) | |
9796 | { | |
9797 | struct dwarf2_locexpr_baton *dlbaton; | |
9798 | ||
9799 | dlbaton = obstack_alloc (&objfile->objfile_obstack, sizeof (*dlbaton)); | |
9800 | dlbaton->data = DW_BLOCK (attr)->data; | |
9801 | dlbaton->size = DW_BLOCK (attr)->size; | |
9802 | dlbaton->per_cu = cu->per_cu; | |
9803 | ||
9804 | SET_FIELD_DWARF_BLOCK (call_site->target, dlbaton); | |
9805 | } | |
9806 | else if (is_ref_attr (attr)) | |
9807 | { | |
96408a79 SA |
9808 | struct dwarf2_cu *target_cu = cu; |
9809 | struct die_info *target_die; | |
9810 | ||
9811 | target_die = follow_die_ref_or_sig (die, attr, &target_cu); | |
9812 | gdb_assert (target_cu->objfile == objfile); | |
9813 | if (die_is_declaration (target_die, target_cu)) | |
9814 | { | |
9815 | const char *target_physname; | |
9816 | ||
9817 | target_physname = dwarf2_physname (NULL, target_die, target_cu); | |
9818 | if (target_physname == NULL) | |
9819 | complaint (&symfile_complaints, | |
9820 | _("DW_AT_GNU_call_site_target target DIE has invalid " | |
9821 | "physname, for referencing DIE 0x%x [in module %s]"), | |
b64f50a1 | 9822 | die->offset.sect_off, objfile->name); |
96408a79 | 9823 | else |
7d455152 | 9824 | SET_FIELD_PHYSNAME (call_site->target, target_physname); |
96408a79 SA |
9825 | } |
9826 | else | |
9827 | { | |
9828 | CORE_ADDR lowpc; | |
9829 | ||
9830 | /* DW_AT_entry_pc should be preferred. */ | |
9831 | if (!dwarf2_get_pc_bounds (target_die, &lowpc, NULL, target_cu, NULL)) | |
9832 | complaint (&symfile_complaints, | |
9833 | _("DW_AT_GNU_call_site_target target DIE has invalid " | |
9834 | "low pc, for referencing DIE 0x%x [in module %s]"), | |
b64f50a1 | 9835 | die->offset.sect_off, objfile->name); |
96408a79 SA |
9836 | else |
9837 | SET_FIELD_PHYSADDR (call_site->target, lowpc + baseaddr); | |
9838 | } | |
9839 | } | |
9840 | else | |
9841 | complaint (&symfile_complaints, | |
9842 | _("DW_TAG_GNU_call_site DW_AT_GNU_call_site_target is neither " | |
9843 | "block nor reference, for DIE 0x%x [in module %s]"), | |
b64f50a1 | 9844 | die->offset.sect_off, objfile->name); |
96408a79 SA |
9845 | |
9846 | call_site->per_cu = cu->per_cu; | |
9847 | ||
9848 | for (child_die = die->child; | |
9849 | child_die && child_die->tag; | |
9850 | child_die = sibling_die (child_die)) | |
9851 | { | |
96408a79 | 9852 | struct call_site_parameter *parameter; |
1788b2d3 | 9853 | struct attribute *loc, *origin; |
96408a79 SA |
9854 | |
9855 | if (child_die->tag != DW_TAG_GNU_call_site_parameter) | |
9856 | { | |
9857 | /* Already printed the complaint above. */ | |
9858 | continue; | |
9859 | } | |
9860 | ||
9861 | gdb_assert (call_site->parameter_count < nparams); | |
9862 | parameter = &call_site->parameter[call_site->parameter_count]; | |
9863 | ||
1788b2d3 JK |
9864 | /* DW_AT_location specifies the register number or DW_AT_abstract_origin |
9865 | specifies DW_TAG_formal_parameter. Value of the data assumed for the | |
9866 | register is contained in DW_AT_GNU_call_site_value. */ | |
96408a79 | 9867 | |
24c5c679 | 9868 | loc = dwarf2_attr (child_die, DW_AT_location, cu); |
1788b2d3 JK |
9869 | origin = dwarf2_attr (child_die, DW_AT_abstract_origin, cu); |
9870 | if (loc == NULL && origin != NULL && is_ref_attr (origin)) | |
9871 | { | |
9872 | sect_offset offset; | |
9873 | ||
9874 | parameter->kind = CALL_SITE_PARAMETER_PARAM_OFFSET; | |
9875 | offset = dwarf2_get_ref_die_offset (origin); | |
d76b7dbc JK |
9876 | if (!offset_in_cu_p (&cu->header, offset)) |
9877 | { | |
9878 | /* As DW_OP_GNU_parameter_ref uses CU-relative offset this | |
9879 | binding can be done only inside one CU. Such referenced DIE | |
9880 | therefore cannot be even moved to DW_TAG_partial_unit. */ | |
9881 | complaint (&symfile_complaints, | |
9882 | _("DW_AT_abstract_origin offset is not in CU for " | |
9883 | "DW_TAG_GNU_call_site child DIE 0x%x " | |
9884 | "[in module %s]"), | |
9885 | child_die->offset.sect_off, objfile->name); | |
9886 | continue; | |
9887 | } | |
1788b2d3 JK |
9888 | parameter->u.param_offset.cu_off = (offset.sect_off |
9889 | - cu->header.offset.sect_off); | |
9890 | } | |
9891 | else if (loc == NULL || origin != NULL || !attr_form_is_block (loc)) | |
96408a79 SA |
9892 | { |
9893 | complaint (&symfile_complaints, | |
9894 | _("No DW_FORM_block* DW_AT_location for " | |
9895 | "DW_TAG_GNU_call_site child DIE 0x%x [in module %s]"), | |
b64f50a1 | 9896 | child_die->offset.sect_off, objfile->name); |
96408a79 SA |
9897 | continue; |
9898 | } | |
24c5c679 | 9899 | else |
96408a79 | 9900 | { |
24c5c679 JK |
9901 | parameter->u.dwarf_reg = dwarf_block_to_dwarf_reg |
9902 | (DW_BLOCK (loc)->data, &DW_BLOCK (loc)->data[DW_BLOCK (loc)->size]); | |
9903 | if (parameter->u.dwarf_reg != -1) | |
9904 | parameter->kind = CALL_SITE_PARAMETER_DWARF_REG; | |
9905 | else if (dwarf_block_to_sp_offset (gdbarch, DW_BLOCK (loc)->data, | |
9906 | &DW_BLOCK (loc)->data[DW_BLOCK (loc)->size], | |
9907 | ¶meter->u.fb_offset)) | |
9908 | parameter->kind = CALL_SITE_PARAMETER_FB_OFFSET; | |
9909 | else | |
9910 | { | |
9911 | complaint (&symfile_complaints, | |
9912 | _("Only single DW_OP_reg or DW_OP_fbreg is supported " | |
9913 | "for DW_FORM_block* DW_AT_location is supported for " | |
9914 | "DW_TAG_GNU_call_site child DIE 0x%x " | |
9915 | "[in module %s]"), | |
9916 | child_die->offset.sect_off, objfile->name); | |
9917 | continue; | |
9918 | } | |
96408a79 SA |
9919 | } |
9920 | ||
9921 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_value, cu); | |
9922 | if (!attr_form_is_block (attr)) | |
9923 | { | |
9924 | complaint (&symfile_complaints, | |
9925 | _("No DW_FORM_block* DW_AT_GNU_call_site_value for " | |
9926 | "DW_TAG_GNU_call_site child DIE 0x%x [in module %s]"), | |
b64f50a1 | 9927 | child_die->offset.sect_off, objfile->name); |
96408a79 SA |
9928 | continue; |
9929 | } | |
9930 | parameter->value = DW_BLOCK (attr)->data; | |
9931 | parameter->value_size = DW_BLOCK (attr)->size; | |
9932 | ||
9933 | /* Parameters are not pre-cleared by memset above. */ | |
9934 | parameter->data_value = NULL; | |
9935 | parameter->data_value_size = 0; | |
9936 | call_site->parameter_count++; | |
9937 | ||
9938 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_data_value, cu); | |
9939 | if (attr) | |
9940 | { | |
9941 | if (!attr_form_is_block (attr)) | |
9942 | complaint (&symfile_complaints, | |
9943 | _("No DW_FORM_block* DW_AT_GNU_call_site_data_value for " | |
9944 | "DW_TAG_GNU_call_site child DIE 0x%x [in module %s]"), | |
b64f50a1 | 9945 | child_die->offset.sect_off, objfile->name); |
96408a79 SA |
9946 | else |
9947 | { | |
9948 | parameter->data_value = DW_BLOCK (attr)->data; | |
9949 | parameter->data_value_size = DW_BLOCK (attr)->size; | |
9950 | } | |
9951 | } | |
9952 | } | |
9953 | } | |
9954 | ||
43039443 | 9955 | /* Get low and high pc attributes from DW_AT_ranges attribute value OFFSET. |
ff013f42 JK |
9956 | Return 1 if the attributes are present and valid, otherwise, return 0. |
9957 | If RANGES_PST is not NULL we should setup `objfile->psymtabs_addrmap'. */ | |
43039443 JK |
9958 | |
9959 | static int | |
9960 | dwarf2_ranges_read (unsigned offset, CORE_ADDR *low_return, | |
ff013f42 JK |
9961 | CORE_ADDR *high_return, struct dwarf2_cu *cu, |
9962 | struct partial_symtab *ranges_pst) | |
43039443 JK |
9963 | { |
9964 | struct objfile *objfile = cu->objfile; | |
9965 | struct comp_unit_head *cu_header = &cu->header; | |
9966 | bfd *obfd = objfile->obfd; | |
9967 | unsigned int addr_size = cu_header->addr_size; | |
9968 | CORE_ADDR mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
9969 | /* Base address selection entry. */ | |
9970 | CORE_ADDR base; | |
9971 | int found_base; | |
9972 | unsigned int dummy; | |
9973 | gdb_byte *buffer; | |
9974 | CORE_ADDR marker; | |
9975 | int low_set; | |
9976 | CORE_ADDR low = 0; | |
9977 | CORE_ADDR high = 0; | |
ff013f42 | 9978 | CORE_ADDR baseaddr; |
43039443 | 9979 | |
d00adf39 DE |
9980 | found_base = cu->base_known; |
9981 | base = cu->base_address; | |
43039443 | 9982 | |
be391dca | 9983 | dwarf2_read_section (objfile, &dwarf2_per_objfile->ranges); |
dce234bc | 9984 | if (offset >= dwarf2_per_objfile->ranges.size) |
43039443 JK |
9985 | { |
9986 | complaint (&symfile_complaints, | |
9987 | _("Offset %d out of bounds for DW_AT_ranges attribute"), | |
9988 | offset); | |
9989 | return 0; | |
9990 | } | |
dce234bc | 9991 | buffer = dwarf2_per_objfile->ranges.buffer + offset; |
43039443 JK |
9992 | |
9993 | /* Read in the largest possible address. */ | |
9994 | marker = read_address (obfd, buffer, cu, &dummy); | |
9995 | if ((marker & mask) == mask) | |
9996 | { | |
9997 | /* If we found the largest possible address, then | |
9998 | read the base address. */ | |
9999 | base = read_address (obfd, buffer + addr_size, cu, &dummy); | |
10000 | buffer += 2 * addr_size; | |
10001 | offset += 2 * addr_size; | |
10002 | found_base = 1; | |
10003 | } | |
10004 | ||
10005 | low_set = 0; | |
10006 | ||
e7030f15 | 10007 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
ff013f42 | 10008 | |
43039443 JK |
10009 | while (1) |
10010 | { | |
10011 | CORE_ADDR range_beginning, range_end; | |
10012 | ||
10013 | range_beginning = read_address (obfd, buffer, cu, &dummy); | |
10014 | buffer += addr_size; | |
10015 | range_end = read_address (obfd, buffer, cu, &dummy); | |
10016 | buffer += addr_size; | |
10017 | offset += 2 * addr_size; | |
10018 | ||
10019 | /* An end of list marker is a pair of zero addresses. */ | |
10020 | if (range_beginning == 0 && range_end == 0) | |
10021 | /* Found the end of list entry. */ | |
10022 | break; | |
10023 | ||
10024 | /* Each base address selection entry is a pair of 2 values. | |
10025 | The first is the largest possible address, the second is | |
10026 | the base address. Check for a base address here. */ | |
10027 | if ((range_beginning & mask) == mask) | |
10028 | { | |
10029 | /* If we found the largest possible address, then | |
10030 | read the base address. */ | |
10031 | base = read_address (obfd, buffer + addr_size, cu, &dummy); | |
10032 | found_base = 1; | |
10033 | continue; | |
10034 | } | |
10035 | ||
10036 | if (!found_base) | |
10037 | { | |
10038 | /* We have no valid base address for the ranges | |
10039 | data. */ | |
10040 | complaint (&symfile_complaints, | |
10041 | _("Invalid .debug_ranges data (no base address)")); | |
10042 | return 0; | |
10043 | } | |
10044 | ||
9277c30c UW |
10045 | if (range_beginning > range_end) |
10046 | { | |
10047 | /* Inverted range entries are invalid. */ | |
10048 | complaint (&symfile_complaints, | |
10049 | _("Invalid .debug_ranges data (inverted range)")); | |
10050 | return 0; | |
10051 | } | |
10052 | ||
10053 | /* Empty range entries have no effect. */ | |
10054 | if (range_beginning == range_end) | |
10055 | continue; | |
10056 | ||
43039443 JK |
10057 | range_beginning += base; |
10058 | range_end += base; | |
10059 | ||
01093045 DE |
10060 | /* A not-uncommon case of bad debug info. |
10061 | Don't pollute the addrmap with bad data. */ | |
10062 | if (range_beginning + baseaddr == 0 | |
10063 | && !dwarf2_per_objfile->has_section_at_zero) | |
10064 | { | |
10065 | complaint (&symfile_complaints, | |
10066 | _(".debug_ranges entry has start address of zero" | |
10067 | " [in module %s]"), objfile->name); | |
10068 | continue; | |
10069 | } | |
10070 | ||
9277c30c | 10071 | if (ranges_pst != NULL) |
ff013f42 | 10072 | addrmap_set_empty (objfile->psymtabs_addrmap, |
3e43a32a MS |
10073 | range_beginning + baseaddr, |
10074 | range_end - 1 + baseaddr, | |
ff013f42 JK |
10075 | ranges_pst); |
10076 | ||
43039443 JK |
10077 | /* FIXME: This is recording everything as a low-high |
10078 | segment of consecutive addresses. We should have a | |
10079 | data structure for discontiguous block ranges | |
10080 | instead. */ | |
10081 | if (! low_set) | |
10082 | { | |
10083 | low = range_beginning; | |
10084 | high = range_end; | |
10085 | low_set = 1; | |
10086 | } | |
10087 | else | |
10088 | { | |
10089 | if (range_beginning < low) | |
10090 | low = range_beginning; | |
10091 | if (range_end > high) | |
10092 | high = range_end; | |
10093 | } | |
10094 | } | |
10095 | ||
10096 | if (! low_set) | |
10097 | /* If the first entry is an end-of-list marker, the range | |
10098 | describes an empty scope, i.e. no instructions. */ | |
10099 | return 0; | |
10100 | ||
10101 | if (low_return) | |
10102 | *low_return = low; | |
10103 | if (high_return) | |
10104 | *high_return = high; | |
10105 | return 1; | |
10106 | } | |
10107 | ||
af34e669 DJ |
10108 | /* Get low and high pc attributes from a die. Return 1 if the attributes |
10109 | are present and valid, otherwise, return 0. Return -1 if the range is | |
10110 | discontinuous, i.e. derived from DW_AT_ranges information. */ | |
380bca97 | 10111 | |
c906108c | 10112 | static int |
af34e669 | 10113 | dwarf2_get_pc_bounds (struct die_info *die, CORE_ADDR *lowpc, |
d85a05f0 DJ |
10114 | CORE_ADDR *highpc, struct dwarf2_cu *cu, |
10115 | struct partial_symtab *pst) | |
c906108c SS |
10116 | { |
10117 | struct attribute *attr; | |
91da1414 | 10118 | struct attribute *attr_high; |
af34e669 DJ |
10119 | CORE_ADDR low = 0; |
10120 | CORE_ADDR high = 0; | |
10121 | int ret = 0; | |
c906108c | 10122 | |
91da1414 MW |
10123 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
10124 | if (attr_high) | |
af34e669 | 10125 | { |
e142c38c | 10126 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
af34e669 | 10127 | if (attr) |
91da1414 MW |
10128 | { |
10129 | low = DW_ADDR (attr); | |
3019eac3 DE |
10130 | if (attr_high->form == DW_FORM_addr |
10131 | || attr_high->form == DW_FORM_GNU_addr_index) | |
91da1414 MW |
10132 | high = DW_ADDR (attr_high); |
10133 | else | |
10134 | high = low + DW_UNSND (attr_high); | |
10135 | } | |
af34e669 DJ |
10136 | else |
10137 | /* Found high w/o low attribute. */ | |
10138 | return 0; | |
10139 | ||
10140 | /* Found consecutive range of addresses. */ | |
10141 | ret = 1; | |
10142 | } | |
c906108c | 10143 | else |
af34e669 | 10144 | { |
e142c38c | 10145 | attr = dwarf2_attr (die, DW_AT_ranges, cu); |
af34e669 DJ |
10146 | if (attr != NULL) |
10147 | { | |
ab435259 DE |
10148 | /* DW_AT_ranges_base does not apply to DIEs from the DWO skeleton. |
10149 | We take advantage of the fact that DW_AT_ranges does not appear | |
10150 | in DW_TAG_compile_unit of DWO files. */ | |
10151 | int need_ranges_base = die->tag != DW_TAG_compile_unit; | |
10152 | unsigned int ranges_offset = (DW_UNSND (attr) | |
10153 | + (need_ranges_base | |
10154 | ? cu->ranges_base | |
10155 | : 0)); | |
2e3cf129 | 10156 | |
af34e669 | 10157 | /* Value of the DW_AT_ranges attribute is the offset in the |
a604369a | 10158 | .debug_ranges section. */ |
2e3cf129 | 10159 | if (!dwarf2_ranges_read (ranges_offset, &low, &high, cu, pst)) |
af34e669 | 10160 | return 0; |
43039443 | 10161 | /* Found discontinuous range of addresses. */ |
af34e669 DJ |
10162 | ret = -1; |
10163 | } | |
10164 | } | |
c906108c | 10165 | |
9373cf26 JK |
10166 | /* read_partial_die has also the strict LOW < HIGH requirement. */ |
10167 | if (high <= low) | |
c906108c SS |
10168 | return 0; |
10169 | ||
10170 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
10171 | eliminate duplicate copies of functions and vtables and such. | |
10172 | The linker will arbitrarily choose one and discard the others. | |
10173 | The AT_*_pc values for such functions refer to local labels in | |
10174 | these sections. If the section from that file was discarded, the | |
10175 | labels are not in the output, so the relocs get a value of 0. | |
10176 | If this is a discarded function, mark the pc bounds as invalid, | |
10177 | so that GDB will ignore it. */ | |
72dca2f5 | 10178 | if (low == 0 && !dwarf2_per_objfile->has_section_at_zero) |
c906108c SS |
10179 | return 0; |
10180 | ||
10181 | *lowpc = low; | |
96408a79 SA |
10182 | if (highpc) |
10183 | *highpc = high; | |
af34e669 | 10184 | return ret; |
c906108c SS |
10185 | } |
10186 | ||
b084d499 JB |
10187 | /* Assuming that DIE represents a subprogram DIE or a lexical block, get |
10188 | its low and high PC addresses. Do nothing if these addresses could not | |
10189 | be determined. Otherwise, set LOWPC to the low address if it is smaller, | |
10190 | and HIGHPC to the high address if greater than HIGHPC. */ | |
10191 | ||
10192 | static void | |
10193 | dwarf2_get_subprogram_pc_bounds (struct die_info *die, | |
10194 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
10195 | struct dwarf2_cu *cu) | |
10196 | { | |
10197 | CORE_ADDR low, high; | |
10198 | struct die_info *child = die->child; | |
10199 | ||
d85a05f0 | 10200 | if (dwarf2_get_pc_bounds (die, &low, &high, cu, NULL)) |
b084d499 JB |
10201 | { |
10202 | *lowpc = min (*lowpc, low); | |
10203 | *highpc = max (*highpc, high); | |
10204 | } | |
10205 | ||
10206 | /* If the language does not allow nested subprograms (either inside | |
10207 | subprograms or lexical blocks), we're done. */ | |
10208 | if (cu->language != language_ada) | |
10209 | return; | |
6e70227d | 10210 | |
b084d499 JB |
10211 | /* Check all the children of the given DIE. If it contains nested |
10212 | subprograms, then check their pc bounds. Likewise, we need to | |
10213 | check lexical blocks as well, as they may also contain subprogram | |
10214 | definitions. */ | |
10215 | while (child && child->tag) | |
10216 | { | |
10217 | if (child->tag == DW_TAG_subprogram | |
10218 | || child->tag == DW_TAG_lexical_block) | |
10219 | dwarf2_get_subprogram_pc_bounds (child, lowpc, highpc, cu); | |
10220 | child = sibling_die (child); | |
10221 | } | |
10222 | } | |
10223 | ||
fae299cd DC |
10224 | /* Get the low and high pc's represented by the scope DIE, and store |
10225 | them in *LOWPC and *HIGHPC. If the correct values can't be | |
10226 | determined, set *LOWPC to -1 and *HIGHPC to 0. */ | |
10227 | ||
10228 | static void | |
10229 | get_scope_pc_bounds (struct die_info *die, | |
10230 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
10231 | struct dwarf2_cu *cu) | |
10232 | { | |
10233 | CORE_ADDR best_low = (CORE_ADDR) -1; | |
10234 | CORE_ADDR best_high = (CORE_ADDR) 0; | |
10235 | CORE_ADDR current_low, current_high; | |
10236 | ||
d85a05f0 | 10237 | if (dwarf2_get_pc_bounds (die, ¤t_low, ¤t_high, cu, NULL)) |
fae299cd DC |
10238 | { |
10239 | best_low = current_low; | |
10240 | best_high = current_high; | |
10241 | } | |
10242 | else | |
10243 | { | |
10244 | struct die_info *child = die->child; | |
10245 | ||
10246 | while (child && child->tag) | |
10247 | { | |
10248 | switch (child->tag) { | |
10249 | case DW_TAG_subprogram: | |
b084d499 | 10250 | dwarf2_get_subprogram_pc_bounds (child, &best_low, &best_high, cu); |
fae299cd DC |
10251 | break; |
10252 | case DW_TAG_namespace: | |
f55ee35c | 10253 | case DW_TAG_module: |
fae299cd DC |
10254 | /* FIXME: carlton/2004-01-16: Should we do this for |
10255 | DW_TAG_class_type/DW_TAG_structure_type, too? I think | |
10256 | that current GCC's always emit the DIEs corresponding | |
10257 | to definitions of methods of classes as children of a | |
10258 | DW_TAG_compile_unit or DW_TAG_namespace (as opposed to | |
10259 | the DIEs giving the declarations, which could be | |
10260 | anywhere). But I don't see any reason why the | |
10261 | standards says that they have to be there. */ | |
10262 | get_scope_pc_bounds (child, ¤t_low, ¤t_high, cu); | |
10263 | ||
10264 | if (current_low != ((CORE_ADDR) -1)) | |
10265 | { | |
10266 | best_low = min (best_low, current_low); | |
10267 | best_high = max (best_high, current_high); | |
10268 | } | |
10269 | break; | |
10270 | default: | |
0963b4bd | 10271 | /* Ignore. */ |
fae299cd DC |
10272 | break; |
10273 | } | |
10274 | ||
10275 | child = sibling_die (child); | |
10276 | } | |
10277 | } | |
10278 | ||
10279 | *lowpc = best_low; | |
10280 | *highpc = best_high; | |
10281 | } | |
10282 | ||
801e3a5b JB |
10283 | /* Record the address ranges for BLOCK, offset by BASEADDR, as given |
10284 | in DIE. */ | |
380bca97 | 10285 | |
801e3a5b JB |
10286 | static void |
10287 | dwarf2_record_block_ranges (struct die_info *die, struct block *block, | |
10288 | CORE_ADDR baseaddr, struct dwarf2_cu *cu) | |
10289 | { | |
bb5ed363 | 10290 | struct objfile *objfile = cu->objfile; |
801e3a5b | 10291 | struct attribute *attr; |
91da1414 | 10292 | struct attribute *attr_high; |
801e3a5b | 10293 | |
91da1414 MW |
10294 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
10295 | if (attr_high) | |
801e3a5b | 10296 | { |
801e3a5b JB |
10297 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
10298 | if (attr) | |
10299 | { | |
10300 | CORE_ADDR low = DW_ADDR (attr); | |
91da1414 | 10301 | CORE_ADDR high; |
3019eac3 DE |
10302 | if (attr_high->form == DW_FORM_addr |
10303 | || attr_high->form == DW_FORM_GNU_addr_index) | |
91da1414 MW |
10304 | high = DW_ADDR (attr_high); |
10305 | else | |
10306 | high = low + DW_UNSND (attr_high); | |
9a619af0 | 10307 | |
801e3a5b JB |
10308 | record_block_range (block, baseaddr + low, baseaddr + high - 1); |
10309 | } | |
10310 | } | |
10311 | ||
10312 | attr = dwarf2_attr (die, DW_AT_ranges, cu); | |
10313 | if (attr) | |
10314 | { | |
bb5ed363 | 10315 | bfd *obfd = objfile->obfd; |
ab435259 DE |
10316 | /* DW_AT_ranges_base does not apply to DIEs from the DWO skeleton. |
10317 | We take advantage of the fact that DW_AT_ranges does not appear | |
10318 | in DW_TAG_compile_unit of DWO files. */ | |
10319 | int need_ranges_base = die->tag != DW_TAG_compile_unit; | |
801e3a5b JB |
10320 | |
10321 | /* The value of the DW_AT_ranges attribute is the offset of the | |
10322 | address range list in the .debug_ranges section. */ | |
ab435259 DE |
10323 | unsigned long offset = (DW_UNSND (attr) |
10324 | + (need_ranges_base ? cu->ranges_base : 0)); | |
dce234bc | 10325 | gdb_byte *buffer = dwarf2_per_objfile->ranges.buffer + offset; |
801e3a5b JB |
10326 | |
10327 | /* For some target architectures, but not others, the | |
10328 | read_address function sign-extends the addresses it returns. | |
10329 | To recognize base address selection entries, we need a | |
10330 | mask. */ | |
10331 | unsigned int addr_size = cu->header.addr_size; | |
10332 | CORE_ADDR base_select_mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
10333 | ||
10334 | /* The base address, to which the next pair is relative. Note | |
10335 | that this 'base' is a DWARF concept: most entries in a range | |
10336 | list are relative, to reduce the number of relocs against the | |
10337 | debugging information. This is separate from this function's | |
10338 | 'baseaddr' argument, which GDB uses to relocate debugging | |
10339 | information from a shared library based on the address at | |
10340 | which the library was loaded. */ | |
d00adf39 DE |
10341 | CORE_ADDR base = cu->base_address; |
10342 | int base_known = cu->base_known; | |
801e3a5b | 10343 | |
be391dca | 10344 | gdb_assert (dwarf2_per_objfile->ranges.readin); |
dce234bc | 10345 | if (offset >= dwarf2_per_objfile->ranges.size) |
801e3a5b JB |
10346 | { |
10347 | complaint (&symfile_complaints, | |
10348 | _("Offset %lu out of bounds for DW_AT_ranges attribute"), | |
10349 | offset); | |
10350 | return; | |
10351 | } | |
10352 | ||
10353 | for (;;) | |
10354 | { | |
10355 | unsigned int bytes_read; | |
10356 | CORE_ADDR start, end; | |
10357 | ||
10358 | start = read_address (obfd, buffer, cu, &bytes_read); | |
10359 | buffer += bytes_read; | |
10360 | end = read_address (obfd, buffer, cu, &bytes_read); | |
10361 | buffer += bytes_read; | |
10362 | ||
10363 | /* Did we find the end of the range list? */ | |
10364 | if (start == 0 && end == 0) | |
10365 | break; | |
10366 | ||
10367 | /* Did we find a base address selection entry? */ | |
10368 | else if ((start & base_select_mask) == base_select_mask) | |
10369 | { | |
10370 | base = end; | |
10371 | base_known = 1; | |
10372 | } | |
10373 | ||
10374 | /* We found an ordinary address range. */ | |
10375 | else | |
10376 | { | |
10377 | if (!base_known) | |
10378 | { | |
10379 | complaint (&symfile_complaints, | |
3e43a32a MS |
10380 | _("Invalid .debug_ranges data " |
10381 | "(no base address)")); | |
801e3a5b JB |
10382 | return; |
10383 | } | |
10384 | ||
9277c30c UW |
10385 | if (start > end) |
10386 | { | |
10387 | /* Inverted range entries are invalid. */ | |
10388 | complaint (&symfile_complaints, | |
10389 | _("Invalid .debug_ranges data " | |
10390 | "(inverted range)")); | |
10391 | return; | |
10392 | } | |
10393 | ||
10394 | /* Empty range entries have no effect. */ | |
10395 | if (start == end) | |
10396 | continue; | |
10397 | ||
01093045 DE |
10398 | start += base + baseaddr; |
10399 | end += base + baseaddr; | |
10400 | ||
10401 | /* A not-uncommon case of bad debug info. | |
10402 | Don't pollute the addrmap with bad data. */ | |
10403 | if (start == 0 && !dwarf2_per_objfile->has_section_at_zero) | |
10404 | { | |
10405 | complaint (&symfile_complaints, | |
10406 | _(".debug_ranges entry has start address of zero" | |
10407 | " [in module %s]"), objfile->name); | |
10408 | continue; | |
10409 | } | |
10410 | ||
10411 | record_block_range (block, start, end - 1); | |
801e3a5b JB |
10412 | } |
10413 | } | |
10414 | } | |
10415 | } | |
10416 | ||
685b1105 JK |
10417 | /* Check whether the producer field indicates either of GCC < 4.6, or the |
10418 | Intel C/C++ compiler, and cache the result in CU. */ | |
60d5a603 | 10419 | |
685b1105 JK |
10420 | static void |
10421 | check_producer (struct dwarf2_cu *cu) | |
60d5a603 JK |
10422 | { |
10423 | const char *cs; | |
10424 | int major, minor, release; | |
10425 | ||
10426 | if (cu->producer == NULL) | |
10427 | { | |
10428 | /* For unknown compilers expect their behavior is DWARF version | |
10429 | compliant. | |
10430 | ||
10431 | GCC started to support .debug_types sections by -gdwarf-4 since | |
10432 | gcc-4.5.x. As the .debug_types sections are missing DW_AT_producer | |
10433 | for their space efficiency GDB cannot workaround gcc-4.5.x -gdwarf-4 | |
10434 | combination. gcc-4.5.x -gdwarf-4 binaries have DW_AT_accessibility | |
10435 | interpreted incorrectly by GDB now - GCC PR debug/48229. */ | |
60d5a603 | 10436 | } |
685b1105 | 10437 | else if (strncmp (cu->producer, "GNU ", strlen ("GNU ")) == 0) |
60d5a603 | 10438 | { |
685b1105 JK |
10439 | /* Skip any identifier after "GNU " - such as "C++" or "Java". */ |
10440 | ||
ba919b58 TT |
10441 | cs = &cu->producer[strlen ("GNU ")]; |
10442 | while (*cs && !isdigit (*cs)) | |
10443 | cs++; | |
10444 | if (sscanf (cs, "%d.%d.%d", &major, &minor, &release) != 3) | |
10445 | { | |
10446 | /* Not recognized as GCC. */ | |
10447 | } | |
10448 | else | |
1b80a9fa JK |
10449 | { |
10450 | cu->producer_is_gxx_lt_4_6 = major < 4 || (major == 4 && minor < 6); | |
10451 | cu->producer_is_gcc_lt_4_3 = major < 4 || (major == 4 && minor < 3); | |
10452 | } | |
685b1105 JK |
10453 | } |
10454 | else if (strncmp (cu->producer, "Intel(R) C", strlen ("Intel(R) C")) == 0) | |
10455 | cu->producer_is_icc = 1; | |
10456 | else | |
10457 | { | |
10458 | /* For other non-GCC compilers, expect their behavior is DWARF version | |
10459 | compliant. */ | |
60d5a603 JK |
10460 | } |
10461 | ||
ba919b58 | 10462 | cu->checked_producer = 1; |
685b1105 | 10463 | } |
ba919b58 | 10464 | |
685b1105 JK |
10465 | /* Check for GCC PR debug/45124 fix which is not present in any G++ version up |
10466 | to 4.5.any while it is present already in G++ 4.6.0 - the PR has been fixed | |
10467 | during 4.6.0 experimental. */ | |
10468 | ||
10469 | static int | |
10470 | producer_is_gxx_lt_4_6 (struct dwarf2_cu *cu) | |
10471 | { | |
10472 | if (!cu->checked_producer) | |
10473 | check_producer (cu); | |
10474 | ||
10475 | return cu->producer_is_gxx_lt_4_6; | |
60d5a603 JK |
10476 | } |
10477 | ||
10478 | /* Return the default accessibility type if it is not overriden by | |
10479 | DW_AT_accessibility. */ | |
10480 | ||
10481 | static enum dwarf_access_attribute | |
10482 | dwarf2_default_access_attribute (struct die_info *die, struct dwarf2_cu *cu) | |
10483 | { | |
10484 | if (cu->header.version < 3 || producer_is_gxx_lt_4_6 (cu)) | |
10485 | { | |
10486 | /* The default DWARF 2 accessibility for members is public, the default | |
10487 | accessibility for inheritance is private. */ | |
10488 | ||
10489 | if (die->tag != DW_TAG_inheritance) | |
10490 | return DW_ACCESS_public; | |
10491 | else | |
10492 | return DW_ACCESS_private; | |
10493 | } | |
10494 | else | |
10495 | { | |
10496 | /* DWARF 3+ defines the default accessibility a different way. The same | |
10497 | rules apply now for DW_TAG_inheritance as for the members and it only | |
10498 | depends on the container kind. */ | |
10499 | ||
10500 | if (die->parent->tag == DW_TAG_class_type) | |
10501 | return DW_ACCESS_private; | |
10502 | else | |
10503 | return DW_ACCESS_public; | |
10504 | } | |
10505 | } | |
10506 | ||
74ac6d43 TT |
10507 | /* Look for DW_AT_data_member_location. Set *OFFSET to the byte |
10508 | offset. If the attribute was not found return 0, otherwise return | |
10509 | 1. If it was found but could not properly be handled, set *OFFSET | |
10510 | to 0. */ | |
10511 | ||
10512 | static int | |
10513 | handle_data_member_location (struct die_info *die, struct dwarf2_cu *cu, | |
10514 | LONGEST *offset) | |
10515 | { | |
10516 | struct attribute *attr; | |
10517 | ||
10518 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); | |
10519 | if (attr != NULL) | |
10520 | { | |
10521 | *offset = 0; | |
10522 | ||
10523 | /* Note that we do not check for a section offset first here. | |
10524 | This is because DW_AT_data_member_location is new in DWARF 4, | |
10525 | so if we see it, we can assume that a constant form is really | |
10526 | a constant and not a section offset. */ | |
10527 | if (attr_form_is_constant (attr)) | |
10528 | *offset = dwarf2_get_attr_constant_value (attr, 0); | |
10529 | else if (attr_form_is_section_offset (attr)) | |
10530 | dwarf2_complex_location_expr_complaint (); | |
10531 | else if (attr_form_is_block (attr)) | |
10532 | *offset = decode_locdesc (DW_BLOCK (attr), cu); | |
10533 | else | |
10534 | dwarf2_complex_location_expr_complaint (); | |
10535 | ||
10536 | return 1; | |
10537 | } | |
10538 | ||
10539 | return 0; | |
10540 | } | |
10541 | ||
c906108c SS |
10542 | /* Add an aggregate field to the field list. */ |
10543 | ||
10544 | static void | |
107d2387 | 10545 | dwarf2_add_field (struct field_info *fip, struct die_info *die, |
e7c27a73 | 10546 | struct dwarf2_cu *cu) |
6e70227d | 10547 | { |
e7c27a73 | 10548 | struct objfile *objfile = cu->objfile; |
5e2b427d | 10549 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
10550 | struct nextfield *new_field; |
10551 | struct attribute *attr; | |
10552 | struct field *fp; | |
15d034d0 | 10553 | const char *fieldname = ""; |
c906108c SS |
10554 | |
10555 | /* Allocate a new field list entry and link it in. */ | |
10556 | new_field = (struct nextfield *) xmalloc (sizeof (struct nextfield)); | |
b8c9b27d | 10557 | make_cleanup (xfree, new_field); |
c906108c | 10558 | memset (new_field, 0, sizeof (struct nextfield)); |
7d0ccb61 DJ |
10559 | |
10560 | if (die->tag == DW_TAG_inheritance) | |
10561 | { | |
10562 | new_field->next = fip->baseclasses; | |
10563 | fip->baseclasses = new_field; | |
10564 | } | |
10565 | else | |
10566 | { | |
10567 | new_field->next = fip->fields; | |
10568 | fip->fields = new_field; | |
10569 | } | |
c906108c SS |
10570 | fip->nfields++; |
10571 | ||
e142c38c | 10572 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c SS |
10573 | if (attr) |
10574 | new_field->accessibility = DW_UNSND (attr); | |
60d5a603 JK |
10575 | else |
10576 | new_field->accessibility = dwarf2_default_access_attribute (die, cu); | |
c906108c SS |
10577 | if (new_field->accessibility != DW_ACCESS_public) |
10578 | fip->non_public_fields = 1; | |
60d5a603 | 10579 | |
e142c38c | 10580 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); |
c906108c SS |
10581 | if (attr) |
10582 | new_field->virtuality = DW_UNSND (attr); | |
60d5a603 JK |
10583 | else |
10584 | new_field->virtuality = DW_VIRTUALITY_none; | |
c906108c SS |
10585 | |
10586 | fp = &new_field->field; | |
a9a9bd0f | 10587 | |
e142c38c | 10588 | if (die->tag == DW_TAG_member && ! die_is_declaration (die, cu)) |
c906108c | 10589 | { |
74ac6d43 TT |
10590 | LONGEST offset; |
10591 | ||
a9a9bd0f | 10592 | /* Data member other than a C++ static data member. */ |
6e70227d | 10593 | |
c906108c | 10594 | /* Get type of field. */ |
e7c27a73 | 10595 | fp->type = die_type (die, cu); |
c906108c | 10596 | |
d6a843b5 | 10597 | SET_FIELD_BITPOS (*fp, 0); |
01ad7f36 | 10598 | |
c906108c | 10599 | /* Get bit size of field (zero if none). */ |
e142c38c | 10600 | attr = dwarf2_attr (die, DW_AT_bit_size, cu); |
c906108c SS |
10601 | if (attr) |
10602 | { | |
10603 | FIELD_BITSIZE (*fp) = DW_UNSND (attr); | |
10604 | } | |
10605 | else | |
10606 | { | |
10607 | FIELD_BITSIZE (*fp) = 0; | |
10608 | } | |
10609 | ||
10610 | /* Get bit offset of field. */ | |
74ac6d43 TT |
10611 | if (handle_data_member_location (die, cu, &offset)) |
10612 | SET_FIELD_BITPOS (*fp, offset * bits_per_byte); | |
e142c38c | 10613 | attr = dwarf2_attr (die, DW_AT_bit_offset, cu); |
c906108c SS |
10614 | if (attr) |
10615 | { | |
5e2b427d | 10616 | if (gdbarch_bits_big_endian (gdbarch)) |
c906108c SS |
10617 | { |
10618 | /* For big endian bits, the DW_AT_bit_offset gives the | |
c5aa993b JM |
10619 | additional bit offset from the MSB of the containing |
10620 | anonymous object to the MSB of the field. We don't | |
10621 | have to do anything special since we don't need to | |
10622 | know the size of the anonymous object. */ | |
f41f5e61 | 10623 | SET_FIELD_BITPOS (*fp, FIELD_BITPOS (*fp) + DW_UNSND (attr)); |
c906108c SS |
10624 | } |
10625 | else | |
10626 | { | |
10627 | /* For little endian bits, compute the bit offset to the | |
c5aa993b JM |
10628 | MSB of the anonymous object, subtract off the number of |
10629 | bits from the MSB of the field to the MSB of the | |
10630 | object, and then subtract off the number of bits of | |
10631 | the field itself. The result is the bit offset of | |
10632 | the LSB of the field. */ | |
c906108c SS |
10633 | int anonymous_size; |
10634 | int bit_offset = DW_UNSND (attr); | |
10635 | ||
e142c38c | 10636 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
10637 | if (attr) |
10638 | { | |
10639 | /* The size of the anonymous object containing | |
10640 | the bit field is explicit, so use the | |
10641 | indicated size (in bytes). */ | |
10642 | anonymous_size = DW_UNSND (attr); | |
10643 | } | |
10644 | else | |
10645 | { | |
10646 | /* The size of the anonymous object containing | |
10647 | the bit field must be inferred from the type | |
10648 | attribute of the data member containing the | |
10649 | bit field. */ | |
10650 | anonymous_size = TYPE_LENGTH (fp->type); | |
10651 | } | |
f41f5e61 PA |
10652 | SET_FIELD_BITPOS (*fp, |
10653 | (FIELD_BITPOS (*fp) | |
10654 | + anonymous_size * bits_per_byte | |
10655 | - bit_offset - FIELD_BITSIZE (*fp))); | |
c906108c SS |
10656 | } |
10657 | } | |
10658 | ||
10659 | /* Get name of field. */ | |
39cbfefa DJ |
10660 | fieldname = dwarf2_name (die, cu); |
10661 | if (fieldname == NULL) | |
10662 | fieldname = ""; | |
d8151005 DJ |
10663 | |
10664 | /* The name is already allocated along with this objfile, so we don't | |
10665 | need to duplicate it for the type. */ | |
10666 | fp->name = fieldname; | |
c906108c SS |
10667 | |
10668 | /* Change accessibility for artificial fields (e.g. virtual table | |
c5aa993b | 10669 | pointer or virtual base class pointer) to private. */ |
e142c38c | 10670 | if (dwarf2_attr (die, DW_AT_artificial, cu)) |
c906108c | 10671 | { |
d48cc9dd | 10672 | FIELD_ARTIFICIAL (*fp) = 1; |
c906108c SS |
10673 | new_field->accessibility = DW_ACCESS_private; |
10674 | fip->non_public_fields = 1; | |
10675 | } | |
10676 | } | |
a9a9bd0f | 10677 | else if (die->tag == DW_TAG_member || die->tag == DW_TAG_variable) |
c906108c | 10678 | { |
a9a9bd0f DC |
10679 | /* C++ static member. */ |
10680 | ||
10681 | /* NOTE: carlton/2002-11-05: It should be a DW_TAG_member that | |
10682 | is a declaration, but all versions of G++ as of this writing | |
10683 | (so through at least 3.2.1) incorrectly generate | |
10684 | DW_TAG_variable tags. */ | |
6e70227d | 10685 | |
ff355380 | 10686 | const char *physname; |
c906108c | 10687 | |
a9a9bd0f | 10688 | /* Get name of field. */ |
39cbfefa DJ |
10689 | fieldname = dwarf2_name (die, cu); |
10690 | if (fieldname == NULL) | |
c906108c SS |
10691 | return; |
10692 | ||
254e6b9e | 10693 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
3863f96c DE |
10694 | if (attr |
10695 | /* Only create a symbol if this is an external value. | |
10696 | new_symbol checks this and puts the value in the global symbol | |
10697 | table, which we want. If it is not external, new_symbol | |
10698 | will try to put the value in cu->list_in_scope which is wrong. */ | |
10699 | && dwarf2_flag_true_p (die, DW_AT_external, cu)) | |
254e6b9e DE |
10700 | { |
10701 | /* A static const member, not much different than an enum as far as | |
10702 | we're concerned, except that we can support more types. */ | |
10703 | new_symbol (die, NULL, cu); | |
10704 | } | |
10705 | ||
2df3850c | 10706 | /* Get physical name. */ |
ff355380 | 10707 | physname = dwarf2_physname (fieldname, die, cu); |
c906108c | 10708 | |
d8151005 DJ |
10709 | /* The name is already allocated along with this objfile, so we don't |
10710 | need to duplicate it for the type. */ | |
10711 | SET_FIELD_PHYSNAME (*fp, physname ? physname : ""); | |
e7c27a73 | 10712 | FIELD_TYPE (*fp) = die_type (die, cu); |
d8151005 | 10713 | FIELD_NAME (*fp) = fieldname; |
c906108c SS |
10714 | } |
10715 | else if (die->tag == DW_TAG_inheritance) | |
10716 | { | |
74ac6d43 | 10717 | LONGEST offset; |
d4b96c9a | 10718 | |
74ac6d43 TT |
10719 | /* C++ base class field. */ |
10720 | if (handle_data_member_location (die, cu, &offset)) | |
10721 | SET_FIELD_BITPOS (*fp, offset * bits_per_byte); | |
c906108c | 10722 | FIELD_BITSIZE (*fp) = 0; |
e7c27a73 | 10723 | FIELD_TYPE (*fp) = die_type (die, cu); |
c906108c SS |
10724 | FIELD_NAME (*fp) = type_name_no_tag (fp->type); |
10725 | fip->nbaseclasses++; | |
10726 | } | |
10727 | } | |
10728 | ||
98751a41 JK |
10729 | /* Add a typedef defined in the scope of the FIP's class. */ |
10730 | ||
10731 | static void | |
10732 | dwarf2_add_typedef (struct field_info *fip, struct die_info *die, | |
10733 | struct dwarf2_cu *cu) | |
6e70227d | 10734 | { |
98751a41 | 10735 | struct objfile *objfile = cu->objfile; |
98751a41 JK |
10736 | struct typedef_field_list *new_field; |
10737 | struct attribute *attr; | |
10738 | struct typedef_field *fp; | |
10739 | char *fieldname = ""; | |
10740 | ||
10741 | /* Allocate a new field list entry and link it in. */ | |
10742 | new_field = xzalloc (sizeof (*new_field)); | |
10743 | make_cleanup (xfree, new_field); | |
10744 | ||
10745 | gdb_assert (die->tag == DW_TAG_typedef); | |
10746 | ||
10747 | fp = &new_field->field; | |
10748 | ||
10749 | /* Get name of field. */ | |
10750 | fp->name = dwarf2_name (die, cu); | |
10751 | if (fp->name == NULL) | |
10752 | return; | |
10753 | ||
10754 | fp->type = read_type_die (die, cu); | |
10755 | ||
10756 | new_field->next = fip->typedef_field_list; | |
10757 | fip->typedef_field_list = new_field; | |
10758 | fip->typedef_field_list_count++; | |
10759 | } | |
10760 | ||
c906108c SS |
10761 | /* Create the vector of fields, and attach it to the type. */ |
10762 | ||
10763 | static void | |
fba45db2 | 10764 | dwarf2_attach_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 10765 | struct dwarf2_cu *cu) |
c906108c SS |
10766 | { |
10767 | int nfields = fip->nfields; | |
10768 | ||
10769 | /* Record the field count, allocate space for the array of fields, | |
10770 | and create blank accessibility bitfields if necessary. */ | |
10771 | TYPE_NFIELDS (type) = nfields; | |
10772 | TYPE_FIELDS (type) = (struct field *) | |
10773 | TYPE_ALLOC (type, sizeof (struct field) * nfields); | |
10774 | memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nfields); | |
10775 | ||
b4ba55a1 | 10776 | if (fip->non_public_fields && cu->language != language_ada) |
c906108c SS |
10777 | { |
10778 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
10779 | ||
10780 | TYPE_FIELD_PRIVATE_BITS (type) = | |
10781 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
10782 | B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); | |
10783 | ||
10784 | TYPE_FIELD_PROTECTED_BITS (type) = | |
10785 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
10786 | B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); | |
10787 | ||
774b6a14 TT |
10788 | TYPE_FIELD_IGNORE_BITS (type) = |
10789 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
10790 | B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields); | |
c906108c SS |
10791 | } |
10792 | ||
10793 | /* If the type has baseclasses, allocate and clear a bit vector for | |
10794 | TYPE_FIELD_VIRTUAL_BITS. */ | |
b4ba55a1 | 10795 | if (fip->nbaseclasses && cu->language != language_ada) |
c906108c SS |
10796 | { |
10797 | int num_bytes = B_BYTES (fip->nbaseclasses); | |
fe1b8b76 | 10798 | unsigned char *pointer; |
c906108c SS |
10799 | |
10800 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
fe1b8b76 JB |
10801 | pointer = TYPE_ALLOC (type, num_bytes); |
10802 | TYPE_FIELD_VIRTUAL_BITS (type) = pointer; | |
c906108c SS |
10803 | B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), fip->nbaseclasses); |
10804 | TYPE_N_BASECLASSES (type) = fip->nbaseclasses; | |
10805 | } | |
10806 | ||
3e43a32a MS |
10807 | /* Copy the saved-up fields into the field vector. Start from the head of |
10808 | the list, adding to the tail of the field array, so that they end up in | |
10809 | the same order in the array in which they were added to the list. */ | |
c906108c SS |
10810 | while (nfields-- > 0) |
10811 | { | |
7d0ccb61 DJ |
10812 | struct nextfield *fieldp; |
10813 | ||
10814 | if (fip->fields) | |
10815 | { | |
10816 | fieldp = fip->fields; | |
10817 | fip->fields = fieldp->next; | |
10818 | } | |
10819 | else | |
10820 | { | |
10821 | fieldp = fip->baseclasses; | |
10822 | fip->baseclasses = fieldp->next; | |
10823 | } | |
10824 | ||
10825 | TYPE_FIELD (type, nfields) = fieldp->field; | |
10826 | switch (fieldp->accessibility) | |
c906108c | 10827 | { |
c5aa993b | 10828 | case DW_ACCESS_private: |
b4ba55a1 JB |
10829 | if (cu->language != language_ada) |
10830 | SET_TYPE_FIELD_PRIVATE (type, nfields); | |
c5aa993b | 10831 | break; |
c906108c | 10832 | |
c5aa993b | 10833 | case DW_ACCESS_protected: |
b4ba55a1 JB |
10834 | if (cu->language != language_ada) |
10835 | SET_TYPE_FIELD_PROTECTED (type, nfields); | |
c5aa993b | 10836 | break; |
c906108c | 10837 | |
c5aa993b JM |
10838 | case DW_ACCESS_public: |
10839 | break; | |
c906108c | 10840 | |
c5aa993b JM |
10841 | default: |
10842 | /* Unknown accessibility. Complain and treat it as public. */ | |
10843 | { | |
e2e0b3e5 | 10844 | complaint (&symfile_complaints, _("unsupported accessibility %d"), |
7d0ccb61 | 10845 | fieldp->accessibility); |
c5aa993b JM |
10846 | } |
10847 | break; | |
c906108c SS |
10848 | } |
10849 | if (nfields < fip->nbaseclasses) | |
10850 | { | |
7d0ccb61 | 10851 | switch (fieldp->virtuality) |
c906108c | 10852 | { |
c5aa993b JM |
10853 | case DW_VIRTUALITY_virtual: |
10854 | case DW_VIRTUALITY_pure_virtual: | |
b4ba55a1 | 10855 | if (cu->language == language_ada) |
a73c6dcd | 10856 | error (_("unexpected virtuality in component of Ada type")); |
c5aa993b JM |
10857 | SET_TYPE_FIELD_VIRTUAL (type, nfields); |
10858 | break; | |
c906108c SS |
10859 | } |
10860 | } | |
c906108c SS |
10861 | } |
10862 | } | |
10863 | ||
7d27a96d TT |
10864 | /* Return true if this member function is a constructor, false |
10865 | otherwise. */ | |
10866 | ||
10867 | static int | |
10868 | dwarf2_is_constructor (struct die_info *die, struct dwarf2_cu *cu) | |
10869 | { | |
10870 | const char *fieldname; | |
10871 | const char *typename; | |
10872 | int len; | |
10873 | ||
10874 | if (die->parent == NULL) | |
10875 | return 0; | |
10876 | ||
10877 | if (die->parent->tag != DW_TAG_structure_type | |
10878 | && die->parent->tag != DW_TAG_union_type | |
10879 | && die->parent->tag != DW_TAG_class_type) | |
10880 | return 0; | |
10881 | ||
10882 | fieldname = dwarf2_name (die, cu); | |
10883 | typename = dwarf2_name (die->parent, cu); | |
10884 | if (fieldname == NULL || typename == NULL) | |
10885 | return 0; | |
10886 | ||
10887 | len = strlen (fieldname); | |
10888 | return (strncmp (fieldname, typename, len) == 0 | |
10889 | && (typename[len] == '\0' || typename[len] == '<')); | |
10890 | } | |
10891 | ||
c906108c SS |
10892 | /* Add a member function to the proper fieldlist. */ |
10893 | ||
10894 | static void | |
107d2387 | 10895 | dwarf2_add_member_fn (struct field_info *fip, struct die_info *die, |
e7c27a73 | 10896 | struct type *type, struct dwarf2_cu *cu) |
c906108c | 10897 | { |
e7c27a73 | 10898 | struct objfile *objfile = cu->objfile; |
c906108c SS |
10899 | struct attribute *attr; |
10900 | struct fnfieldlist *flp; | |
10901 | int i; | |
10902 | struct fn_field *fnp; | |
15d034d0 | 10903 | const char *fieldname; |
c906108c | 10904 | struct nextfnfield *new_fnfield; |
f792889a | 10905 | struct type *this_type; |
60d5a603 | 10906 | enum dwarf_access_attribute accessibility; |
c906108c | 10907 | |
b4ba55a1 | 10908 | if (cu->language == language_ada) |
a73c6dcd | 10909 | error (_("unexpected member function in Ada type")); |
b4ba55a1 | 10910 | |
2df3850c | 10911 | /* Get name of member function. */ |
39cbfefa DJ |
10912 | fieldname = dwarf2_name (die, cu); |
10913 | if (fieldname == NULL) | |
2df3850c | 10914 | return; |
c906108c | 10915 | |
c906108c SS |
10916 | /* Look up member function name in fieldlist. */ |
10917 | for (i = 0; i < fip->nfnfields; i++) | |
10918 | { | |
27bfe10e | 10919 | if (strcmp (fip->fnfieldlists[i].name, fieldname) == 0) |
c906108c SS |
10920 | break; |
10921 | } | |
10922 | ||
10923 | /* Create new list element if necessary. */ | |
10924 | if (i < fip->nfnfields) | |
10925 | flp = &fip->fnfieldlists[i]; | |
10926 | else | |
10927 | { | |
10928 | if ((fip->nfnfields % DW_FIELD_ALLOC_CHUNK) == 0) | |
10929 | { | |
10930 | fip->fnfieldlists = (struct fnfieldlist *) | |
10931 | xrealloc (fip->fnfieldlists, | |
10932 | (fip->nfnfields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 10933 | * sizeof (struct fnfieldlist)); |
c906108c | 10934 | if (fip->nfnfields == 0) |
c13c43fd | 10935 | make_cleanup (free_current_contents, &fip->fnfieldlists); |
c906108c SS |
10936 | } |
10937 | flp = &fip->fnfieldlists[fip->nfnfields]; | |
10938 | flp->name = fieldname; | |
10939 | flp->length = 0; | |
10940 | flp->head = NULL; | |
3da10d80 | 10941 | i = fip->nfnfields++; |
c906108c SS |
10942 | } |
10943 | ||
10944 | /* Create a new member function field and chain it to the field list | |
0963b4bd | 10945 | entry. */ |
c906108c | 10946 | new_fnfield = (struct nextfnfield *) xmalloc (sizeof (struct nextfnfield)); |
b8c9b27d | 10947 | make_cleanup (xfree, new_fnfield); |
c906108c SS |
10948 | memset (new_fnfield, 0, sizeof (struct nextfnfield)); |
10949 | new_fnfield->next = flp->head; | |
10950 | flp->head = new_fnfield; | |
10951 | flp->length++; | |
10952 | ||
10953 | /* Fill in the member function field info. */ | |
10954 | fnp = &new_fnfield->fnfield; | |
3da10d80 KS |
10955 | |
10956 | /* Delay processing of the physname until later. */ | |
10957 | if (cu->language == language_cplus || cu->language == language_java) | |
10958 | { | |
10959 | add_to_method_list (type, i, flp->length - 1, fieldname, | |
10960 | die, cu); | |
10961 | } | |
10962 | else | |
10963 | { | |
1d06ead6 | 10964 | const char *physname = dwarf2_physname (fieldname, die, cu); |
3da10d80 KS |
10965 | fnp->physname = physname ? physname : ""; |
10966 | } | |
10967 | ||
c906108c | 10968 | fnp->type = alloc_type (objfile); |
f792889a DJ |
10969 | this_type = read_type_die (die, cu); |
10970 | if (this_type && TYPE_CODE (this_type) == TYPE_CODE_FUNC) | |
c906108c | 10971 | { |
f792889a | 10972 | int nparams = TYPE_NFIELDS (this_type); |
c906108c | 10973 | |
f792889a | 10974 | /* TYPE is the domain of this method, and THIS_TYPE is the type |
e26fb1d7 DC |
10975 | of the method itself (TYPE_CODE_METHOD). */ |
10976 | smash_to_method_type (fnp->type, type, | |
f792889a DJ |
10977 | TYPE_TARGET_TYPE (this_type), |
10978 | TYPE_FIELDS (this_type), | |
10979 | TYPE_NFIELDS (this_type), | |
10980 | TYPE_VARARGS (this_type)); | |
c906108c SS |
10981 | |
10982 | /* Handle static member functions. | |
c5aa993b | 10983 | Dwarf2 has no clean way to discern C++ static and non-static |
0963b4bd MS |
10984 | member functions. G++ helps GDB by marking the first |
10985 | parameter for non-static member functions (which is the this | |
10986 | pointer) as artificial. We obtain this information from | |
10987 | read_subroutine_type via TYPE_FIELD_ARTIFICIAL. */ | |
f792889a | 10988 | if (nparams == 0 || TYPE_FIELD_ARTIFICIAL (this_type, 0) == 0) |
c906108c SS |
10989 | fnp->voffset = VOFFSET_STATIC; |
10990 | } | |
10991 | else | |
e2e0b3e5 | 10992 | complaint (&symfile_complaints, _("member function type missing for '%s'"), |
3da10d80 | 10993 | dwarf2_full_name (fieldname, die, cu)); |
c906108c SS |
10994 | |
10995 | /* Get fcontext from DW_AT_containing_type if present. */ | |
e142c38c | 10996 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
e7c27a73 | 10997 | fnp->fcontext = die_containing_type (die, cu); |
c906108c | 10998 | |
3e43a32a MS |
10999 | /* dwarf2 doesn't have stubbed physical names, so the setting of is_const and |
11000 | is_volatile is irrelevant, as it is needed by gdb_mangle_name only. */ | |
c906108c SS |
11001 | |
11002 | /* Get accessibility. */ | |
e142c38c | 11003 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c | 11004 | if (attr) |
60d5a603 JK |
11005 | accessibility = DW_UNSND (attr); |
11006 | else | |
11007 | accessibility = dwarf2_default_access_attribute (die, cu); | |
11008 | switch (accessibility) | |
c906108c | 11009 | { |
60d5a603 JK |
11010 | case DW_ACCESS_private: |
11011 | fnp->is_private = 1; | |
11012 | break; | |
11013 | case DW_ACCESS_protected: | |
11014 | fnp->is_protected = 1; | |
11015 | break; | |
c906108c SS |
11016 | } |
11017 | ||
b02dede2 | 11018 | /* Check for artificial methods. */ |
e142c38c | 11019 | attr = dwarf2_attr (die, DW_AT_artificial, cu); |
b02dede2 DJ |
11020 | if (attr && DW_UNSND (attr) != 0) |
11021 | fnp->is_artificial = 1; | |
11022 | ||
7d27a96d TT |
11023 | fnp->is_constructor = dwarf2_is_constructor (die, cu); |
11024 | ||
0d564a31 | 11025 | /* Get index in virtual function table if it is a virtual member |
aec5aa8b TT |
11026 | function. For older versions of GCC, this is an offset in the |
11027 | appropriate virtual table, as specified by DW_AT_containing_type. | |
11028 | For everyone else, it is an expression to be evaluated relative | |
0d564a31 DJ |
11029 | to the object address. */ |
11030 | ||
e142c38c | 11031 | attr = dwarf2_attr (die, DW_AT_vtable_elem_location, cu); |
aec5aa8b | 11032 | if (attr) |
8e19ed76 | 11033 | { |
aec5aa8b | 11034 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size > 0) |
8e19ed76 | 11035 | { |
aec5aa8b TT |
11036 | if (DW_BLOCK (attr)->data[0] == DW_OP_constu) |
11037 | { | |
11038 | /* Old-style GCC. */ | |
11039 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu) + 2; | |
11040 | } | |
11041 | else if (DW_BLOCK (attr)->data[0] == DW_OP_deref | |
11042 | || (DW_BLOCK (attr)->size > 1 | |
11043 | && DW_BLOCK (attr)->data[0] == DW_OP_deref_size | |
11044 | && DW_BLOCK (attr)->data[1] == cu->header.addr_size)) | |
11045 | { | |
11046 | struct dwarf_block blk; | |
11047 | int offset; | |
11048 | ||
11049 | offset = (DW_BLOCK (attr)->data[0] == DW_OP_deref | |
11050 | ? 1 : 2); | |
11051 | blk.size = DW_BLOCK (attr)->size - offset; | |
11052 | blk.data = DW_BLOCK (attr)->data + offset; | |
11053 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu); | |
11054 | if ((fnp->voffset % cu->header.addr_size) != 0) | |
11055 | dwarf2_complex_location_expr_complaint (); | |
11056 | else | |
11057 | fnp->voffset /= cu->header.addr_size; | |
11058 | fnp->voffset += 2; | |
11059 | } | |
11060 | else | |
11061 | dwarf2_complex_location_expr_complaint (); | |
11062 | ||
11063 | if (!fnp->fcontext) | |
11064 | fnp->fcontext = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (this_type, 0)); | |
11065 | } | |
3690dd37 | 11066 | else if (attr_form_is_section_offset (attr)) |
8e19ed76 | 11067 | { |
4d3c2250 | 11068 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
11069 | } |
11070 | else | |
11071 | { | |
4d3c2250 KB |
11072 | dwarf2_invalid_attrib_class_complaint ("DW_AT_vtable_elem_location", |
11073 | fieldname); | |
8e19ed76 | 11074 | } |
0d564a31 | 11075 | } |
d48cc9dd DJ |
11076 | else |
11077 | { | |
11078 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); | |
11079 | if (attr && DW_UNSND (attr)) | |
11080 | { | |
11081 | /* GCC does this, as of 2008-08-25; PR debug/37237. */ | |
11082 | complaint (&symfile_complaints, | |
3e43a32a MS |
11083 | _("Member function \"%s\" (offset %d) is virtual " |
11084 | "but the vtable offset is not specified"), | |
b64f50a1 | 11085 | fieldname, die->offset.sect_off); |
9655fd1a | 11086 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
d48cc9dd DJ |
11087 | TYPE_CPLUS_DYNAMIC (type) = 1; |
11088 | } | |
11089 | } | |
c906108c SS |
11090 | } |
11091 | ||
11092 | /* Create the vector of member function fields, and attach it to the type. */ | |
11093 | ||
11094 | static void | |
fba45db2 | 11095 | dwarf2_attach_fn_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 11096 | struct dwarf2_cu *cu) |
c906108c SS |
11097 | { |
11098 | struct fnfieldlist *flp; | |
c906108c SS |
11099 | int i; |
11100 | ||
b4ba55a1 | 11101 | if (cu->language == language_ada) |
a73c6dcd | 11102 | error (_("unexpected member functions in Ada type")); |
b4ba55a1 | 11103 | |
c906108c SS |
11104 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
11105 | TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) | |
11106 | TYPE_ALLOC (type, sizeof (struct fn_fieldlist) * fip->nfnfields); | |
11107 | ||
11108 | for (i = 0, flp = fip->fnfieldlists; i < fip->nfnfields; i++, flp++) | |
11109 | { | |
11110 | struct nextfnfield *nfp = flp->head; | |
11111 | struct fn_fieldlist *fn_flp = &TYPE_FN_FIELDLIST (type, i); | |
11112 | int k; | |
11113 | ||
11114 | TYPE_FN_FIELDLIST_NAME (type, i) = flp->name; | |
11115 | TYPE_FN_FIELDLIST_LENGTH (type, i) = flp->length; | |
11116 | fn_flp->fn_fields = (struct fn_field *) | |
11117 | TYPE_ALLOC (type, sizeof (struct fn_field) * flp->length); | |
11118 | for (k = flp->length; (k--, nfp); nfp = nfp->next) | |
c5aa993b | 11119 | fn_flp->fn_fields[k] = nfp->fnfield; |
c906108c SS |
11120 | } |
11121 | ||
11122 | TYPE_NFN_FIELDS (type) = fip->nfnfields; | |
c906108c SS |
11123 | } |
11124 | ||
1168df01 JB |
11125 | /* Returns non-zero if NAME is the name of a vtable member in CU's |
11126 | language, zero otherwise. */ | |
11127 | static int | |
11128 | is_vtable_name (const char *name, struct dwarf2_cu *cu) | |
11129 | { | |
11130 | static const char vptr[] = "_vptr"; | |
987504bb | 11131 | static const char vtable[] = "vtable"; |
1168df01 | 11132 | |
987504bb JJ |
11133 | /* Look for the C++ and Java forms of the vtable. */ |
11134 | if ((cu->language == language_java | |
11135 | && strncmp (name, vtable, sizeof (vtable) - 1) == 0) | |
11136 | || (strncmp (name, vptr, sizeof (vptr) - 1) == 0 | |
11137 | && is_cplus_marker (name[sizeof (vptr) - 1]))) | |
1168df01 JB |
11138 | return 1; |
11139 | ||
11140 | return 0; | |
11141 | } | |
11142 | ||
c0dd20ea | 11143 | /* GCC outputs unnamed structures that are really pointers to member |
0b92b5bb TT |
11144 | functions, with the ABI-specified layout. If TYPE describes |
11145 | such a structure, smash it into a member function type. | |
61049d3b DJ |
11146 | |
11147 | GCC shouldn't do this; it should just output pointer to member DIEs. | |
11148 | This is GCC PR debug/28767. */ | |
c0dd20ea | 11149 | |
0b92b5bb TT |
11150 | static void |
11151 | quirk_gcc_member_function_pointer (struct type *type, struct objfile *objfile) | |
c0dd20ea | 11152 | { |
0b92b5bb | 11153 | struct type *pfn_type, *domain_type, *new_type; |
c0dd20ea DJ |
11154 | |
11155 | /* Check for a structure with no name and two children. */ | |
0b92b5bb TT |
11156 | if (TYPE_CODE (type) != TYPE_CODE_STRUCT || TYPE_NFIELDS (type) != 2) |
11157 | return; | |
c0dd20ea DJ |
11158 | |
11159 | /* Check for __pfn and __delta members. */ | |
0b92b5bb TT |
11160 | if (TYPE_FIELD_NAME (type, 0) == NULL |
11161 | || strcmp (TYPE_FIELD_NAME (type, 0), "__pfn") != 0 | |
11162 | || TYPE_FIELD_NAME (type, 1) == NULL | |
11163 | || strcmp (TYPE_FIELD_NAME (type, 1), "__delta") != 0) | |
11164 | return; | |
c0dd20ea DJ |
11165 | |
11166 | /* Find the type of the method. */ | |
0b92b5bb | 11167 | pfn_type = TYPE_FIELD_TYPE (type, 0); |
c0dd20ea DJ |
11168 | if (pfn_type == NULL |
11169 | || TYPE_CODE (pfn_type) != TYPE_CODE_PTR | |
11170 | || TYPE_CODE (TYPE_TARGET_TYPE (pfn_type)) != TYPE_CODE_FUNC) | |
0b92b5bb | 11171 | return; |
c0dd20ea DJ |
11172 | |
11173 | /* Look for the "this" argument. */ | |
11174 | pfn_type = TYPE_TARGET_TYPE (pfn_type); | |
11175 | if (TYPE_NFIELDS (pfn_type) == 0 | |
0b92b5bb | 11176 | /* || TYPE_FIELD_TYPE (pfn_type, 0) == NULL */ |
c0dd20ea | 11177 | || TYPE_CODE (TYPE_FIELD_TYPE (pfn_type, 0)) != TYPE_CODE_PTR) |
0b92b5bb | 11178 | return; |
c0dd20ea DJ |
11179 | |
11180 | domain_type = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (pfn_type, 0)); | |
0b92b5bb TT |
11181 | new_type = alloc_type (objfile); |
11182 | smash_to_method_type (new_type, domain_type, TYPE_TARGET_TYPE (pfn_type), | |
c0dd20ea DJ |
11183 | TYPE_FIELDS (pfn_type), TYPE_NFIELDS (pfn_type), |
11184 | TYPE_VARARGS (pfn_type)); | |
0b92b5bb | 11185 | smash_to_methodptr_type (type, new_type); |
c0dd20ea | 11186 | } |
1168df01 | 11187 | |
685b1105 JK |
11188 | /* Return non-zero if the CU's PRODUCER string matches the Intel C/C++ compiler |
11189 | (icc). */ | |
11190 | ||
11191 | static int | |
11192 | producer_is_icc (struct dwarf2_cu *cu) | |
11193 | { | |
11194 | if (!cu->checked_producer) | |
11195 | check_producer (cu); | |
11196 | ||
11197 | return cu->producer_is_icc; | |
11198 | } | |
11199 | ||
c906108c | 11200 | /* Called when we find the DIE that starts a structure or union scope |
c767944b DJ |
11201 | (definition) to create a type for the structure or union. Fill in |
11202 | the type's name and general properties; the members will not be | |
11203 | processed until process_structure_type. | |
c906108c | 11204 | |
c767944b DJ |
11205 | NOTE: we need to call these functions regardless of whether or not the |
11206 | DIE has a DW_AT_name attribute, since it might be an anonymous | |
c906108c SS |
11207 | structure or union. This gets the type entered into our set of |
11208 | user defined types. | |
11209 | ||
11210 | However, if the structure is incomplete (an opaque struct/union) | |
11211 | then suppress creating a symbol table entry for it since gdb only | |
11212 | wants to find the one with the complete definition. Note that if | |
11213 | it is complete, we just call new_symbol, which does it's own | |
11214 | checking about whether the struct/union is anonymous or not (and | |
11215 | suppresses creating a symbol table entry itself). */ | |
11216 | ||
f792889a | 11217 | static struct type * |
134d01f1 | 11218 | read_structure_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 11219 | { |
e7c27a73 | 11220 | struct objfile *objfile = cu->objfile; |
c906108c SS |
11221 | struct type *type; |
11222 | struct attribute *attr; | |
15d034d0 | 11223 | const char *name; |
c906108c | 11224 | |
348e048f DE |
11225 | /* If the definition of this type lives in .debug_types, read that type. |
11226 | Don't follow DW_AT_specification though, that will take us back up | |
11227 | the chain and we want to go down. */ | |
45e58e77 | 11228 | attr = dwarf2_attr_no_follow (die, DW_AT_signature); |
348e048f DE |
11229 | if (attr) |
11230 | { | |
11231 | struct dwarf2_cu *type_cu = cu; | |
11232 | struct die_info *type_die = follow_die_ref_or_sig (die, attr, &type_cu); | |
9a619af0 | 11233 | |
348e048f DE |
11234 | /* We could just recurse on read_structure_type, but we need to call |
11235 | get_die_type to ensure only one type for this DIE is created. | |
11236 | This is important, for example, because for c++ classes we need | |
11237 | TYPE_NAME set which is only done by new_symbol. Blech. */ | |
11238 | type = read_type_die (type_die, type_cu); | |
9dc481d3 DE |
11239 | |
11240 | /* TYPE_CU may not be the same as CU. | |
11241 | Ensure TYPE is recorded in CU's type_hash table. */ | |
348e048f DE |
11242 | return set_die_type (die, type, cu); |
11243 | } | |
11244 | ||
c0dd20ea | 11245 | type = alloc_type (objfile); |
c906108c | 11246 | INIT_CPLUS_SPECIFIC (type); |
93311388 | 11247 | |
39cbfefa DJ |
11248 | name = dwarf2_name (die, cu); |
11249 | if (name != NULL) | |
c906108c | 11250 | { |
987504bb JJ |
11251 | if (cu->language == language_cplus |
11252 | || cu->language == language_java) | |
63d06c5c | 11253 | { |
15d034d0 | 11254 | const char *full_name = dwarf2_full_name (name, die, cu); |
3da10d80 KS |
11255 | |
11256 | /* dwarf2_full_name might have already finished building the DIE's | |
11257 | type. If so, there is no need to continue. */ | |
11258 | if (get_die_type (die, cu) != NULL) | |
11259 | return get_die_type (die, cu); | |
11260 | ||
11261 | TYPE_TAG_NAME (type) = full_name; | |
94af9270 KS |
11262 | if (die->tag == DW_TAG_structure_type |
11263 | || die->tag == DW_TAG_class_type) | |
11264 | TYPE_NAME (type) = TYPE_TAG_NAME (type); | |
63d06c5c DC |
11265 | } |
11266 | else | |
11267 | { | |
d8151005 DJ |
11268 | /* The name is already allocated along with this objfile, so |
11269 | we don't need to duplicate it for the type. */ | |
7d455152 | 11270 | TYPE_TAG_NAME (type) = name; |
94af9270 KS |
11271 | if (die->tag == DW_TAG_class_type) |
11272 | TYPE_NAME (type) = TYPE_TAG_NAME (type); | |
63d06c5c | 11273 | } |
c906108c SS |
11274 | } |
11275 | ||
11276 | if (die->tag == DW_TAG_structure_type) | |
11277 | { | |
11278 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
11279 | } | |
11280 | else if (die->tag == DW_TAG_union_type) | |
11281 | { | |
11282 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
11283 | } | |
11284 | else | |
11285 | { | |
c906108c SS |
11286 | TYPE_CODE (type) = TYPE_CODE_CLASS; |
11287 | } | |
11288 | ||
0cc2414c TT |
11289 | if (cu->language == language_cplus && die->tag == DW_TAG_class_type) |
11290 | TYPE_DECLARED_CLASS (type) = 1; | |
11291 | ||
e142c38c | 11292 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
11293 | if (attr) |
11294 | { | |
11295 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
11296 | } | |
11297 | else | |
11298 | { | |
11299 | TYPE_LENGTH (type) = 0; | |
11300 | } | |
11301 | ||
685b1105 JK |
11302 | if (producer_is_icc (cu)) |
11303 | { | |
11304 | /* ICC does not output the required DW_AT_declaration | |
11305 | on incomplete types, but gives them a size of zero. */ | |
11306 | } | |
11307 | else | |
11308 | TYPE_STUB_SUPPORTED (type) = 1; | |
11309 | ||
dc718098 | 11310 | if (die_is_declaration (die, cu)) |
876cecd0 | 11311 | TYPE_STUB (type) = 1; |
a6c727b2 DJ |
11312 | else if (attr == NULL && die->child == NULL |
11313 | && producer_is_realview (cu->producer)) | |
11314 | /* RealView does not output the required DW_AT_declaration | |
11315 | on incomplete types. */ | |
11316 | TYPE_STUB (type) = 1; | |
dc718098 | 11317 | |
c906108c SS |
11318 | /* We need to add the type field to the die immediately so we don't |
11319 | infinitely recurse when dealing with pointers to the structure | |
0963b4bd | 11320 | type within the structure itself. */ |
1c379e20 | 11321 | set_die_type (die, type, cu); |
c906108c | 11322 | |
7e314c57 JK |
11323 | /* set_die_type should be already done. */ |
11324 | set_descriptive_type (type, die, cu); | |
11325 | ||
c767944b DJ |
11326 | return type; |
11327 | } | |
11328 | ||
11329 | /* Finish creating a structure or union type, including filling in | |
11330 | its members and creating a symbol for it. */ | |
11331 | ||
11332 | static void | |
11333 | process_structure_scope (struct die_info *die, struct dwarf2_cu *cu) | |
11334 | { | |
11335 | struct objfile *objfile = cu->objfile; | |
11336 | struct die_info *child_die = die->child; | |
11337 | struct type *type; | |
11338 | ||
11339 | type = get_die_type (die, cu); | |
11340 | if (type == NULL) | |
11341 | type = read_structure_type (die, cu); | |
11342 | ||
e142c38c | 11343 | if (die->child != NULL && ! die_is_declaration (die, cu)) |
c906108c SS |
11344 | { |
11345 | struct field_info fi; | |
11346 | struct die_info *child_die; | |
34eaf542 | 11347 | VEC (symbolp) *template_args = NULL; |
c767944b | 11348 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
c906108c SS |
11349 | |
11350 | memset (&fi, 0, sizeof (struct field_info)); | |
11351 | ||
639d11d3 | 11352 | child_die = die->child; |
c906108c SS |
11353 | |
11354 | while (child_die && child_die->tag) | |
11355 | { | |
a9a9bd0f DC |
11356 | if (child_die->tag == DW_TAG_member |
11357 | || child_die->tag == DW_TAG_variable) | |
c906108c | 11358 | { |
a9a9bd0f DC |
11359 | /* NOTE: carlton/2002-11-05: A C++ static data member |
11360 | should be a DW_TAG_member that is a declaration, but | |
11361 | all versions of G++ as of this writing (so through at | |
11362 | least 3.2.1) incorrectly generate DW_TAG_variable | |
11363 | tags for them instead. */ | |
e7c27a73 | 11364 | dwarf2_add_field (&fi, child_die, cu); |
c906108c | 11365 | } |
8713b1b1 | 11366 | else if (child_die->tag == DW_TAG_subprogram) |
c906108c | 11367 | { |
0963b4bd | 11368 | /* C++ member function. */ |
e7c27a73 | 11369 | dwarf2_add_member_fn (&fi, child_die, type, cu); |
c906108c SS |
11370 | } |
11371 | else if (child_die->tag == DW_TAG_inheritance) | |
11372 | { | |
11373 | /* C++ base class field. */ | |
e7c27a73 | 11374 | dwarf2_add_field (&fi, child_die, cu); |
c906108c | 11375 | } |
98751a41 JK |
11376 | else if (child_die->tag == DW_TAG_typedef) |
11377 | dwarf2_add_typedef (&fi, child_die, cu); | |
34eaf542 TT |
11378 | else if (child_die->tag == DW_TAG_template_type_param |
11379 | || child_die->tag == DW_TAG_template_value_param) | |
11380 | { | |
11381 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
11382 | ||
f1078f66 DJ |
11383 | if (arg != NULL) |
11384 | VEC_safe_push (symbolp, template_args, arg); | |
34eaf542 TT |
11385 | } |
11386 | ||
c906108c SS |
11387 | child_die = sibling_die (child_die); |
11388 | } | |
11389 | ||
34eaf542 TT |
11390 | /* Attach template arguments to type. */ |
11391 | if (! VEC_empty (symbolp, template_args)) | |
11392 | { | |
11393 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
11394 | TYPE_N_TEMPLATE_ARGUMENTS (type) | |
11395 | = VEC_length (symbolp, template_args); | |
11396 | TYPE_TEMPLATE_ARGUMENTS (type) | |
11397 | = obstack_alloc (&objfile->objfile_obstack, | |
11398 | (TYPE_N_TEMPLATE_ARGUMENTS (type) | |
11399 | * sizeof (struct symbol *))); | |
11400 | memcpy (TYPE_TEMPLATE_ARGUMENTS (type), | |
11401 | VEC_address (symbolp, template_args), | |
11402 | (TYPE_N_TEMPLATE_ARGUMENTS (type) | |
11403 | * sizeof (struct symbol *))); | |
11404 | VEC_free (symbolp, template_args); | |
11405 | } | |
11406 | ||
c906108c SS |
11407 | /* Attach fields and member functions to the type. */ |
11408 | if (fi.nfields) | |
e7c27a73 | 11409 | dwarf2_attach_fields_to_type (&fi, type, cu); |
c906108c SS |
11410 | if (fi.nfnfields) |
11411 | { | |
e7c27a73 | 11412 | dwarf2_attach_fn_fields_to_type (&fi, type, cu); |
c906108c | 11413 | |
c5aa993b | 11414 | /* Get the type which refers to the base class (possibly this |
c906108c | 11415 | class itself) which contains the vtable pointer for the current |
0d564a31 DJ |
11416 | class from the DW_AT_containing_type attribute. This use of |
11417 | DW_AT_containing_type is a GNU extension. */ | |
c906108c | 11418 | |
e142c38c | 11419 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
c906108c | 11420 | { |
e7c27a73 | 11421 | struct type *t = die_containing_type (die, cu); |
c906108c SS |
11422 | |
11423 | TYPE_VPTR_BASETYPE (type) = t; | |
11424 | if (type == t) | |
11425 | { | |
c906108c SS |
11426 | int i; |
11427 | ||
11428 | /* Our own class provides vtbl ptr. */ | |
11429 | for (i = TYPE_NFIELDS (t) - 1; | |
11430 | i >= TYPE_N_BASECLASSES (t); | |
11431 | --i) | |
11432 | { | |
0d5cff50 | 11433 | const char *fieldname = TYPE_FIELD_NAME (t, i); |
c906108c | 11434 | |
1168df01 | 11435 | if (is_vtable_name (fieldname, cu)) |
c906108c SS |
11436 | { |
11437 | TYPE_VPTR_FIELDNO (type) = i; | |
11438 | break; | |
11439 | } | |
11440 | } | |
11441 | ||
11442 | /* Complain if virtual function table field not found. */ | |
11443 | if (i < TYPE_N_BASECLASSES (t)) | |
4d3c2250 | 11444 | complaint (&symfile_complaints, |
3e43a32a MS |
11445 | _("virtual function table pointer " |
11446 | "not found when defining class '%s'"), | |
4d3c2250 KB |
11447 | TYPE_TAG_NAME (type) ? TYPE_TAG_NAME (type) : |
11448 | ""); | |
c906108c SS |
11449 | } |
11450 | else | |
11451 | { | |
11452 | TYPE_VPTR_FIELDNO (type) = TYPE_VPTR_FIELDNO (t); | |
11453 | } | |
11454 | } | |
f6235d4c EZ |
11455 | else if (cu->producer |
11456 | && strncmp (cu->producer, | |
11457 | "IBM(R) XL C/C++ Advanced Edition", 32) == 0) | |
11458 | { | |
11459 | /* The IBM XLC compiler does not provide direct indication | |
11460 | of the containing type, but the vtable pointer is | |
11461 | always named __vfp. */ | |
11462 | ||
11463 | int i; | |
11464 | ||
11465 | for (i = TYPE_NFIELDS (type) - 1; | |
11466 | i >= TYPE_N_BASECLASSES (type); | |
11467 | --i) | |
11468 | { | |
11469 | if (strcmp (TYPE_FIELD_NAME (type, i), "__vfp") == 0) | |
11470 | { | |
11471 | TYPE_VPTR_FIELDNO (type) = i; | |
11472 | TYPE_VPTR_BASETYPE (type) = type; | |
11473 | break; | |
11474 | } | |
11475 | } | |
11476 | } | |
c906108c | 11477 | } |
98751a41 JK |
11478 | |
11479 | /* Copy fi.typedef_field_list linked list elements content into the | |
11480 | allocated array TYPE_TYPEDEF_FIELD_ARRAY (type). */ | |
11481 | if (fi.typedef_field_list) | |
11482 | { | |
11483 | int i = fi.typedef_field_list_count; | |
11484 | ||
a0d7a4ff | 11485 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
98751a41 JK |
11486 | TYPE_TYPEDEF_FIELD_ARRAY (type) |
11487 | = TYPE_ALLOC (type, sizeof (TYPE_TYPEDEF_FIELD (type, 0)) * i); | |
11488 | TYPE_TYPEDEF_FIELD_COUNT (type) = i; | |
11489 | ||
11490 | /* Reverse the list order to keep the debug info elements order. */ | |
11491 | while (--i >= 0) | |
11492 | { | |
11493 | struct typedef_field *dest, *src; | |
6e70227d | 11494 | |
98751a41 JK |
11495 | dest = &TYPE_TYPEDEF_FIELD (type, i); |
11496 | src = &fi.typedef_field_list->field; | |
11497 | fi.typedef_field_list = fi.typedef_field_list->next; | |
11498 | *dest = *src; | |
11499 | } | |
11500 | } | |
c767944b DJ |
11501 | |
11502 | do_cleanups (back_to); | |
eb2a6f42 TT |
11503 | |
11504 | if (HAVE_CPLUS_STRUCT (type)) | |
11505 | TYPE_CPLUS_REALLY_JAVA (type) = cu->language == language_java; | |
c906108c | 11506 | } |
63d06c5c | 11507 | |
bb5ed363 | 11508 | quirk_gcc_member_function_pointer (type, objfile); |
0b92b5bb | 11509 | |
90aeadfc DC |
11510 | /* NOTE: carlton/2004-03-16: GCC 3.4 (or at least one of its |
11511 | snapshots) has been known to create a die giving a declaration | |
11512 | for a class that has, as a child, a die giving a definition for a | |
11513 | nested class. So we have to process our children even if the | |
11514 | current die is a declaration. Normally, of course, a declaration | |
11515 | won't have any children at all. */ | |
134d01f1 | 11516 | |
90aeadfc DC |
11517 | while (child_die != NULL && child_die->tag) |
11518 | { | |
11519 | if (child_die->tag == DW_TAG_member | |
11520 | || child_die->tag == DW_TAG_variable | |
34eaf542 TT |
11521 | || child_die->tag == DW_TAG_inheritance |
11522 | || child_die->tag == DW_TAG_template_value_param | |
11523 | || child_die->tag == DW_TAG_template_type_param) | |
134d01f1 | 11524 | { |
90aeadfc | 11525 | /* Do nothing. */ |
134d01f1 | 11526 | } |
90aeadfc DC |
11527 | else |
11528 | process_die (child_die, cu); | |
134d01f1 | 11529 | |
90aeadfc | 11530 | child_die = sibling_die (child_die); |
134d01f1 DJ |
11531 | } |
11532 | ||
fa4028e9 JB |
11533 | /* Do not consider external references. According to the DWARF standard, |
11534 | these DIEs are identified by the fact that they have no byte_size | |
11535 | attribute, and a declaration attribute. */ | |
11536 | if (dwarf2_attr (die, DW_AT_byte_size, cu) != NULL | |
11537 | || !die_is_declaration (die, cu)) | |
c767944b | 11538 | new_symbol (die, type, cu); |
134d01f1 DJ |
11539 | } |
11540 | ||
11541 | /* Given a DW_AT_enumeration_type die, set its type. We do not | |
11542 | complete the type's fields yet, or create any symbols. */ | |
c906108c | 11543 | |
f792889a | 11544 | static struct type * |
134d01f1 | 11545 | read_enumeration_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 11546 | { |
e7c27a73 | 11547 | struct objfile *objfile = cu->objfile; |
c906108c | 11548 | struct type *type; |
c906108c | 11549 | struct attribute *attr; |
0114d602 | 11550 | const char *name; |
134d01f1 | 11551 | |
348e048f DE |
11552 | /* If the definition of this type lives in .debug_types, read that type. |
11553 | Don't follow DW_AT_specification though, that will take us back up | |
11554 | the chain and we want to go down. */ | |
45e58e77 | 11555 | attr = dwarf2_attr_no_follow (die, DW_AT_signature); |
348e048f DE |
11556 | if (attr) |
11557 | { | |
11558 | struct dwarf2_cu *type_cu = cu; | |
11559 | struct die_info *type_die = follow_die_ref_or_sig (die, attr, &type_cu); | |
9a619af0 | 11560 | |
348e048f | 11561 | type = read_type_die (type_die, type_cu); |
9dc481d3 DE |
11562 | |
11563 | /* TYPE_CU may not be the same as CU. | |
11564 | Ensure TYPE is recorded in CU's type_hash table. */ | |
348e048f DE |
11565 | return set_die_type (die, type, cu); |
11566 | } | |
11567 | ||
c906108c SS |
11568 | type = alloc_type (objfile); |
11569 | ||
11570 | TYPE_CODE (type) = TYPE_CODE_ENUM; | |
94af9270 | 11571 | name = dwarf2_full_name (NULL, die, cu); |
39cbfefa | 11572 | if (name != NULL) |
7d455152 | 11573 | TYPE_TAG_NAME (type) = name; |
c906108c | 11574 | |
e142c38c | 11575 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
11576 | if (attr) |
11577 | { | |
11578 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
11579 | } | |
11580 | else | |
11581 | { | |
11582 | TYPE_LENGTH (type) = 0; | |
11583 | } | |
11584 | ||
137033e9 JB |
11585 | /* The enumeration DIE can be incomplete. In Ada, any type can be |
11586 | declared as private in the package spec, and then defined only | |
11587 | inside the package body. Such types are known as Taft Amendment | |
11588 | Types. When another package uses such a type, an incomplete DIE | |
11589 | may be generated by the compiler. */ | |
02eb380e | 11590 | if (die_is_declaration (die, cu)) |
876cecd0 | 11591 | TYPE_STUB (type) = 1; |
02eb380e | 11592 | |
f792889a | 11593 | return set_die_type (die, type, cu); |
134d01f1 DJ |
11594 | } |
11595 | ||
11596 | /* Given a pointer to a die which begins an enumeration, process all | |
11597 | the dies that define the members of the enumeration, and create the | |
11598 | symbol for the enumeration type. | |
11599 | ||
11600 | NOTE: We reverse the order of the element list. */ | |
11601 | ||
11602 | static void | |
11603 | process_enumeration_scope (struct die_info *die, struct dwarf2_cu *cu) | |
11604 | { | |
f792889a | 11605 | struct type *this_type; |
134d01f1 | 11606 | |
f792889a DJ |
11607 | this_type = get_die_type (die, cu); |
11608 | if (this_type == NULL) | |
11609 | this_type = read_enumeration_type (die, cu); | |
9dc481d3 | 11610 | |
639d11d3 | 11611 | if (die->child != NULL) |
c906108c | 11612 | { |
9dc481d3 DE |
11613 | struct die_info *child_die; |
11614 | struct symbol *sym; | |
11615 | struct field *fields = NULL; | |
11616 | int num_fields = 0; | |
11617 | int unsigned_enum = 1; | |
15d034d0 | 11618 | const char *name; |
cafec441 TT |
11619 | int flag_enum = 1; |
11620 | ULONGEST mask = 0; | |
9dc481d3 | 11621 | |
639d11d3 | 11622 | child_die = die->child; |
c906108c SS |
11623 | while (child_die && child_die->tag) |
11624 | { | |
11625 | if (child_die->tag != DW_TAG_enumerator) | |
11626 | { | |
e7c27a73 | 11627 | process_die (child_die, cu); |
c906108c SS |
11628 | } |
11629 | else | |
11630 | { | |
39cbfefa DJ |
11631 | name = dwarf2_name (child_die, cu); |
11632 | if (name) | |
c906108c | 11633 | { |
f792889a | 11634 | sym = new_symbol (child_die, this_type, cu); |
c906108c | 11635 | if (SYMBOL_VALUE (sym) < 0) |
cafec441 TT |
11636 | { |
11637 | unsigned_enum = 0; | |
11638 | flag_enum = 0; | |
11639 | } | |
11640 | else if ((mask & SYMBOL_VALUE (sym)) != 0) | |
11641 | flag_enum = 0; | |
11642 | else | |
11643 | mask |= SYMBOL_VALUE (sym); | |
c906108c SS |
11644 | |
11645 | if ((num_fields % DW_FIELD_ALLOC_CHUNK) == 0) | |
11646 | { | |
11647 | fields = (struct field *) | |
11648 | xrealloc (fields, | |
11649 | (num_fields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 11650 | * sizeof (struct field)); |
c906108c SS |
11651 | } |
11652 | ||
3567439c | 11653 | FIELD_NAME (fields[num_fields]) = SYMBOL_LINKAGE_NAME (sym); |
c906108c | 11654 | FIELD_TYPE (fields[num_fields]) = NULL; |
14e75d8e | 11655 | SET_FIELD_ENUMVAL (fields[num_fields], SYMBOL_VALUE (sym)); |
c906108c SS |
11656 | FIELD_BITSIZE (fields[num_fields]) = 0; |
11657 | ||
11658 | num_fields++; | |
11659 | } | |
11660 | } | |
11661 | ||
11662 | child_die = sibling_die (child_die); | |
11663 | } | |
11664 | ||
11665 | if (num_fields) | |
11666 | { | |
f792889a DJ |
11667 | TYPE_NFIELDS (this_type) = num_fields; |
11668 | TYPE_FIELDS (this_type) = (struct field *) | |
11669 | TYPE_ALLOC (this_type, sizeof (struct field) * num_fields); | |
11670 | memcpy (TYPE_FIELDS (this_type), fields, | |
c906108c | 11671 | sizeof (struct field) * num_fields); |
b8c9b27d | 11672 | xfree (fields); |
c906108c SS |
11673 | } |
11674 | if (unsigned_enum) | |
876cecd0 | 11675 | TYPE_UNSIGNED (this_type) = 1; |
cafec441 TT |
11676 | if (flag_enum) |
11677 | TYPE_FLAG_ENUM (this_type) = 1; | |
c906108c | 11678 | } |
134d01f1 | 11679 | |
6c83ed52 TT |
11680 | /* If we are reading an enum from a .debug_types unit, and the enum |
11681 | is a declaration, and the enum is not the signatured type in the | |
11682 | unit, then we do not want to add a symbol for it. Adding a | |
11683 | symbol would in some cases obscure the true definition of the | |
11684 | enum, giving users an incomplete type when the definition is | |
11685 | actually available. Note that we do not want to do this for all | |
11686 | enums which are just declarations, because C++0x allows forward | |
11687 | enum declarations. */ | |
3019eac3 | 11688 | if (cu->per_cu->is_debug_types |
6c83ed52 TT |
11689 | && die_is_declaration (die, cu)) |
11690 | { | |
52dc124a | 11691 | struct signatured_type *sig_type; |
6c83ed52 | 11692 | |
52dc124a | 11693 | sig_type |
6c83ed52 | 11694 | = lookup_signatured_type_at_offset (dwarf2_per_objfile->objfile, |
3019eac3 | 11695 | cu->per_cu->info_or_types_section, |
6c83ed52 | 11696 | cu->per_cu->offset); |
3019eac3 DE |
11697 | gdb_assert (sig_type->type_offset_in_section.sect_off != 0); |
11698 | if (sig_type->type_offset_in_section.sect_off != die->offset.sect_off) | |
6c83ed52 TT |
11699 | return; |
11700 | } | |
11701 | ||
f792889a | 11702 | new_symbol (die, this_type, cu); |
c906108c SS |
11703 | } |
11704 | ||
11705 | /* Extract all information from a DW_TAG_array_type DIE and put it in | |
11706 | the DIE's type field. For now, this only handles one dimensional | |
11707 | arrays. */ | |
11708 | ||
f792889a | 11709 | static struct type * |
e7c27a73 | 11710 | read_array_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 11711 | { |
e7c27a73 | 11712 | struct objfile *objfile = cu->objfile; |
c906108c | 11713 | struct die_info *child_die; |
7e314c57 | 11714 | struct type *type; |
c906108c SS |
11715 | struct type *element_type, *range_type, *index_type; |
11716 | struct type **range_types = NULL; | |
11717 | struct attribute *attr; | |
11718 | int ndim = 0; | |
11719 | struct cleanup *back_to; | |
15d034d0 | 11720 | const char *name; |
c906108c | 11721 | |
e7c27a73 | 11722 | element_type = die_type (die, cu); |
c906108c | 11723 | |
7e314c57 JK |
11724 | /* The die_type call above may have already set the type for this DIE. */ |
11725 | type = get_die_type (die, cu); | |
11726 | if (type) | |
11727 | return type; | |
11728 | ||
c906108c SS |
11729 | /* Irix 6.2 native cc creates array types without children for |
11730 | arrays with unspecified length. */ | |
639d11d3 | 11731 | if (die->child == NULL) |
c906108c | 11732 | { |
46bf5051 | 11733 | index_type = objfile_type (objfile)->builtin_int; |
c906108c | 11734 | range_type = create_range_type (NULL, index_type, 0, -1); |
f792889a DJ |
11735 | type = create_array_type (NULL, element_type, range_type); |
11736 | return set_die_type (die, type, cu); | |
c906108c SS |
11737 | } |
11738 | ||
11739 | back_to = make_cleanup (null_cleanup, NULL); | |
639d11d3 | 11740 | child_die = die->child; |
c906108c SS |
11741 | while (child_die && child_die->tag) |
11742 | { | |
11743 | if (child_die->tag == DW_TAG_subrange_type) | |
11744 | { | |
f792889a | 11745 | struct type *child_type = read_type_die (child_die, cu); |
9a619af0 | 11746 | |
f792889a | 11747 | if (child_type != NULL) |
a02abb62 | 11748 | { |
0963b4bd MS |
11749 | /* The range type was succesfully read. Save it for the |
11750 | array type creation. */ | |
a02abb62 JB |
11751 | if ((ndim % DW_FIELD_ALLOC_CHUNK) == 0) |
11752 | { | |
11753 | range_types = (struct type **) | |
11754 | xrealloc (range_types, (ndim + DW_FIELD_ALLOC_CHUNK) | |
11755 | * sizeof (struct type *)); | |
11756 | if (ndim == 0) | |
11757 | make_cleanup (free_current_contents, &range_types); | |
11758 | } | |
f792889a | 11759 | range_types[ndim++] = child_type; |
a02abb62 | 11760 | } |
c906108c SS |
11761 | } |
11762 | child_die = sibling_die (child_die); | |
11763 | } | |
11764 | ||
11765 | /* Dwarf2 dimensions are output from left to right, create the | |
11766 | necessary array types in backwards order. */ | |
7ca2d3a3 | 11767 | |
c906108c | 11768 | type = element_type; |
7ca2d3a3 DL |
11769 | |
11770 | if (read_array_order (die, cu) == DW_ORD_col_major) | |
11771 | { | |
11772 | int i = 0; | |
9a619af0 | 11773 | |
7ca2d3a3 DL |
11774 | while (i < ndim) |
11775 | type = create_array_type (NULL, type, range_types[i++]); | |
11776 | } | |
11777 | else | |
11778 | { | |
11779 | while (ndim-- > 0) | |
11780 | type = create_array_type (NULL, type, range_types[ndim]); | |
11781 | } | |
c906108c | 11782 | |
f5f8a009 EZ |
11783 | /* Understand Dwarf2 support for vector types (like they occur on |
11784 | the PowerPC w/ AltiVec). Gcc just adds another attribute to the | |
11785 | array type. This is not part of the Dwarf2/3 standard yet, but a | |
11786 | custom vendor extension. The main difference between a regular | |
11787 | array and the vector variant is that vectors are passed by value | |
11788 | to functions. */ | |
e142c38c | 11789 | attr = dwarf2_attr (die, DW_AT_GNU_vector, cu); |
f5f8a009 | 11790 | if (attr) |
ea37ba09 | 11791 | make_vector_type (type); |
f5f8a009 | 11792 | |
dbc98a8b KW |
11793 | /* The DIE may have DW_AT_byte_size set. For example an OpenCL |
11794 | implementation may choose to implement triple vectors using this | |
11795 | attribute. */ | |
11796 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
11797 | if (attr) | |
11798 | { | |
11799 | if (DW_UNSND (attr) >= TYPE_LENGTH (type)) | |
11800 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
11801 | else | |
3e43a32a MS |
11802 | complaint (&symfile_complaints, |
11803 | _("DW_AT_byte_size for array type smaller " | |
11804 | "than the total size of elements")); | |
dbc98a8b KW |
11805 | } |
11806 | ||
39cbfefa DJ |
11807 | name = dwarf2_name (die, cu); |
11808 | if (name) | |
11809 | TYPE_NAME (type) = name; | |
6e70227d | 11810 | |
0963b4bd | 11811 | /* Install the type in the die. */ |
7e314c57 JK |
11812 | set_die_type (die, type, cu); |
11813 | ||
11814 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
11815 | set_descriptive_type (type, die, cu); |
11816 | ||
c906108c SS |
11817 | do_cleanups (back_to); |
11818 | ||
7e314c57 | 11819 | return type; |
c906108c SS |
11820 | } |
11821 | ||
7ca2d3a3 | 11822 | static enum dwarf_array_dim_ordering |
6e70227d | 11823 | read_array_order (struct die_info *die, struct dwarf2_cu *cu) |
7ca2d3a3 DL |
11824 | { |
11825 | struct attribute *attr; | |
11826 | ||
11827 | attr = dwarf2_attr (die, DW_AT_ordering, cu); | |
11828 | ||
11829 | if (attr) return DW_SND (attr); | |
11830 | ||
0963b4bd MS |
11831 | /* GNU F77 is a special case, as at 08/2004 array type info is the |
11832 | opposite order to the dwarf2 specification, but data is still | |
11833 | laid out as per normal fortran. | |
7ca2d3a3 | 11834 | |
0963b4bd MS |
11835 | FIXME: dsl/2004-8-20: If G77 is ever fixed, this will also need |
11836 | version checking. */ | |
7ca2d3a3 | 11837 | |
905e0470 PM |
11838 | if (cu->language == language_fortran |
11839 | && cu->producer && strstr (cu->producer, "GNU F77")) | |
7ca2d3a3 DL |
11840 | { |
11841 | return DW_ORD_row_major; | |
11842 | } | |
11843 | ||
6e70227d | 11844 | switch (cu->language_defn->la_array_ordering) |
7ca2d3a3 DL |
11845 | { |
11846 | case array_column_major: | |
11847 | return DW_ORD_col_major; | |
11848 | case array_row_major: | |
11849 | default: | |
11850 | return DW_ORD_row_major; | |
11851 | }; | |
11852 | } | |
11853 | ||
72019c9c | 11854 | /* Extract all information from a DW_TAG_set_type DIE and put it in |
0963b4bd | 11855 | the DIE's type field. */ |
72019c9c | 11856 | |
f792889a | 11857 | static struct type * |
72019c9c GM |
11858 | read_set_type (struct die_info *die, struct dwarf2_cu *cu) |
11859 | { | |
7e314c57 JK |
11860 | struct type *domain_type, *set_type; |
11861 | struct attribute *attr; | |
f792889a | 11862 | |
7e314c57 JK |
11863 | domain_type = die_type (die, cu); |
11864 | ||
11865 | /* The die_type call above may have already set the type for this DIE. */ | |
11866 | set_type = get_die_type (die, cu); | |
11867 | if (set_type) | |
11868 | return set_type; | |
11869 | ||
11870 | set_type = create_set_type (NULL, domain_type); | |
11871 | ||
11872 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
d09039dd PM |
11873 | if (attr) |
11874 | TYPE_LENGTH (set_type) = DW_UNSND (attr); | |
7e314c57 | 11875 | |
f792889a | 11876 | return set_die_type (die, set_type, cu); |
72019c9c | 11877 | } |
7ca2d3a3 | 11878 | |
0971de02 TT |
11879 | /* A helper for read_common_block that creates a locexpr baton. |
11880 | SYM is the symbol which we are marking as computed. | |
11881 | COMMON_DIE is the DIE for the common block. | |
11882 | COMMON_LOC is the location expression attribute for the common | |
11883 | block itself. | |
11884 | MEMBER_LOC is the location expression attribute for the particular | |
11885 | member of the common block that we are processing. | |
11886 | CU is the CU from which the above come. */ | |
11887 | ||
11888 | static void | |
11889 | mark_common_block_symbol_computed (struct symbol *sym, | |
11890 | struct die_info *common_die, | |
11891 | struct attribute *common_loc, | |
11892 | struct attribute *member_loc, | |
11893 | struct dwarf2_cu *cu) | |
11894 | { | |
11895 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
11896 | struct dwarf2_locexpr_baton *baton; | |
11897 | gdb_byte *ptr; | |
11898 | unsigned int cu_off; | |
11899 | enum bfd_endian byte_order = gdbarch_byte_order (get_objfile_arch (objfile)); | |
11900 | LONGEST offset = 0; | |
11901 | ||
11902 | gdb_assert (common_loc && member_loc); | |
11903 | gdb_assert (attr_form_is_block (common_loc)); | |
11904 | gdb_assert (attr_form_is_block (member_loc) | |
11905 | || attr_form_is_constant (member_loc)); | |
11906 | ||
11907 | baton = obstack_alloc (&objfile->objfile_obstack, | |
11908 | sizeof (struct dwarf2_locexpr_baton)); | |
11909 | baton->per_cu = cu->per_cu; | |
11910 | gdb_assert (baton->per_cu); | |
11911 | ||
11912 | baton->size = 5 /* DW_OP_call4 */ + 1 /* DW_OP_plus */; | |
11913 | ||
11914 | if (attr_form_is_constant (member_loc)) | |
11915 | { | |
11916 | offset = dwarf2_get_attr_constant_value (member_loc, 0); | |
11917 | baton->size += 1 /* DW_OP_addr */ + cu->header.addr_size; | |
11918 | } | |
11919 | else | |
11920 | baton->size += DW_BLOCK (member_loc)->size; | |
11921 | ||
11922 | ptr = obstack_alloc (&objfile->objfile_obstack, baton->size); | |
11923 | baton->data = ptr; | |
11924 | ||
11925 | *ptr++ = DW_OP_call4; | |
11926 | cu_off = common_die->offset.sect_off - cu->per_cu->offset.sect_off; | |
11927 | store_unsigned_integer (ptr, 4, byte_order, cu_off); | |
11928 | ptr += 4; | |
11929 | ||
11930 | if (attr_form_is_constant (member_loc)) | |
11931 | { | |
11932 | *ptr++ = DW_OP_addr; | |
11933 | store_unsigned_integer (ptr, cu->header.addr_size, byte_order, offset); | |
11934 | ptr += cu->header.addr_size; | |
11935 | } | |
11936 | else | |
11937 | { | |
11938 | /* We have to copy the data here, because DW_OP_call4 will only | |
11939 | use a DW_AT_location attribute. */ | |
11940 | memcpy (ptr, DW_BLOCK (member_loc)->data, DW_BLOCK (member_loc)->size); | |
11941 | ptr += DW_BLOCK (member_loc)->size; | |
11942 | } | |
11943 | ||
11944 | *ptr++ = DW_OP_plus; | |
11945 | gdb_assert (ptr - baton->data == baton->size); | |
11946 | ||
11947 | SYMBOL_COMPUTED_OPS (sym) = &dwarf2_locexpr_funcs; | |
11948 | SYMBOL_LOCATION_BATON (sym) = baton; | |
11949 | SYMBOL_CLASS (sym) = LOC_COMPUTED; | |
11950 | } | |
11951 | ||
4357ac6c TT |
11952 | /* Create appropriate locally-scoped variables for all the |
11953 | DW_TAG_common_block entries. Also create a struct common_block | |
11954 | listing all such variables for `info common'. COMMON_BLOCK_DOMAIN | |
11955 | is used to sepate the common blocks name namespace from regular | |
11956 | variable names. */ | |
c906108c SS |
11957 | |
11958 | static void | |
e7c27a73 | 11959 | read_common_block (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 11960 | { |
0971de02 TT |
11961 | struct attribute *attr; |
11962 | ||
11963 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
11964 | if (attr) | |
11965 | { | |
11966 | /* Support the .debug_loc offsets. */ | |
11967 | if (attr_form_is_block (attr)) | |
11968 | { | |
11969 | /* Ok. */ | |
11970 | } | |
11971 | else if (attr_form_is_section_offset (attr)) | |
11972 | { | |
11973 | dwarf2_complex_location_expr_complaint (); | |
11974 | attr = NULL; | |
11975 | } | |
11976 | else | |
11977 | { | |
11978 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", | |
11979 | "common block member"); | |
11980 | attr = NULL; | |
11981 | } | |
11982 | } | |
11983 | ||
639d11d3 | 11984 | if (die->child != NULL) |
c906108c | 11985 | { |
4357ac6c TT |
11986 | struct objfile *objfile = cu->objfile; |
11987 | struct die_info *child_die; | |
11988 | size_t n_entries = 0, size; | |
11989 | struct common_block *common_block; | |
11990 | struct symbol *sym; | |
74ac6d43 | 11991 | |
4357ac6c TT |
11992 | for (child_die = die->child; |
11993 | child_die && child_die->tag; | |
11994 | child_die = sibling_die (child_die)) | |
11995 | ++n_entries; | |
11996 | ||
11997 | size = (sizeof (struct common_block) | |
11998 | + (n_entries - 1) * sizeof (struct symbol *)); | |
11999 | common_block = obstack_alloc (&objfile->objfile_obstack, size); | |
12000 | memset (common_block->contents, 0, n_entries * sizeof (struct symbol *)); | |
12001 | common_block->n_entries = 0; | |
12002 | ||
12003 | for (child_die = die->child; | |
12004 | child_die && child_die->tag; | |
12005 | child_die = sibling_die (child_die)) | |
12006 | { | |
12007 | /* Create the symbol in the DW_TAG_common_block block in the current | |
12008 | symbol scope. */ | |
e7c27a73 | 12009 | sym = new_symbol (child_die, NULL, cu); |
0971de02 TT |
12010 | if (sym != NULL) |
12011 | { | |
12012 | struct attribute *member_loc; | |
12013 | ||
12014 | common_block->contents[common_block->n_entries++] = sym; | |
12015 | ||
12016 | member_loc = dwarf2_attr (child_die, DW_AT_data_member_location, | |
12017 | cu); | |
12018 | if (member_loc) | |
12019 | { | |
12020 | /* GDB has handled this for a long time, but it is | |
12021 | not specified by DWARF. It seems to have been | |
12022 | emitted by gfortran at least as recently as: | |
12023 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23057. */ | |
12024 | complaint (&symfile_complaints, | |
12025 | _("Variable in common block has " | |
12026 | "DW_AT_data_member_location " | |
12027 | "- DIE at 0x%x [in module %s]"), | |
12028 | child_die->offset.sect_off, cu->objfile->name); | |
12029 | ||
12030 | if (attr_form_is_section_offset (member_loc)) | |
12031 | dwarf2_complex_location_expr_complaint (); | |
12032 | else if (attr_form_is_constant (member_loc) | |
12033 | || attr_form_is_block (member_loc)) | |
12034 | { | |
12035 | if (attr) | |
12036 | mark_common_block_symbol_computed (sym, die, attr, | |
12037 | member_loc, cu); | |
12038 | } | |
12039 | else | |
12040 | dwarf2_complex_location_expr_complaint (); | |
12041 | } | |
12042 | } | |
c906108c | 12043 | } |
4357ac6c TT |
12044 | |
12045 | sym = new_symbol (die, objfile_type (objfile)->builtin_void, cu); | |
12046 | SYMBOL_VALUE_COMMON_BLOCK (sym) = common_block; | |
c906108c SS |
12047 | } |
12048 | } | |
12049 | ||
0114d602 | 12050 | /* Create a type for a C++ namespace. */ |
d9fa45fe | 12051 | |
0114d602 DJ |
12052 | static struct type * |
12053 | read_namespace_type (struct die_info *die, struct dwarf2_cu *cu) | |
d9fa45fe | 12054 | { |
e7c27a73 | 12055 | struct objfile *objfile = cu->objfile; |
0114d602 | 12056 | const char *previous_prefix, *name; |
9219021c | 12057 | int is_anonymous; |
0114d602 DJ |
12058 | struct type *type; |
12059 | ||
12060 | /* For extensions, reuse the type of the original namespace. */ | |
12061 | if (dwarf2_attr (die, DW_AT_extension, cu) != NULL) | |
12062 | { | |
12063 | struct die_info *ext_die; | |
12064 | struct dwarf2_cu *ext_cu = cu; | |
9a619af0 | 12065 | |
0114d602 DJ |
12066 | ext_die = dwarf2_extension (die, &ext_cu); |
12067 | type = read_type_die (ext_die, ext_cu); | |
9dc481d3 DE |
12068 | |
12069 | /* EXT_CU may not be the same as CU. | |
12070 | Ensure TYPE is recorded in CU's type_hash table. */ | |
0114d602 DJ |
12071 | return set_die_type (die, type, cu); |
12072 | } | |
9219021c | 12073 | |
e142c38c | 12074 | name = namespace_name (die, &is_anonymous, cu); |
9219021c DC |
12075 | |
12076 | /* Now build the name of the current namespace. */ | |
12077 | ||
0114d602 DJ |
12078 | previous_prefix = determine_prefix (die, cu); |
12079 | if (previous_prefix[0] != '\0') | |
12080 | name = typename_concat (&objfile->objfile_obstack, | |
f55ee35c | 12081 | previous_prefix, name, 0, cu); |
0114d602 DJ |
12082 | |
12083 | /* Create the type. */ | |
12084 | type = init_type (TYPE_CODE_NAMESPACE, 0, 0, NULL, | |
12085 | objfile); | |
abee88f2 | 12086 | TYPE_NAME (type) = name; |
0114d602 DJ |
12087 | TYPE_TAG_NAME (type) = TYPE_NAME (type); |
12088 | ||
60531b24 | 12089 | return set_die_type (die, type, cu); |
0114d602 DJ |
12090 | } |
12091 | ||
12092 | /* Read a C++ namespace. */ | |
12093 | ||
12094 | static void | |
12095 | read_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
12096 | { | |
12097 | struct objfile *objfile = cu->objfile; | |
0114d602 | 12098 | int is_anonymous; |
9219021c | 12099 | |
5c4e30ca DC |
12100 | /* Add a symbol associated to this if we haven't seen the namespace |
12101 | before. Also, add a using directive if it's an anonymous | |
12102 | namespace. */ | |
9219021c | 12103 | |
f2f0e013 | 12104 | if (dwarf2_attr (die, DW_AT_extension, cu) == NULL) |
5c4e30ca DC |
12105 | { |
12106 | struct type *type; | |
12107 | ||
0114d602 | 12108 | type = read_type_die (die, cu); |
e7c27a73 | 12109 | new_symbol (die, type, cu); |
5c4e30ca | 12110 | |
e8e80198 | 12111 | namespace_name (die, &is_anonymous, cu); |
5c4e30ca | 12112 | if (is_anonymous) |
0114d602 DJ |
12113 | { |
12114 | const char *previous_prefix = determine_prefix (die, cu); | |
9a619af0 | 12115 | |
c0cc3a76 | 12116 | cp_add_using_directive (previous_prefix, TYPE_NAME (type), NULL, |
12aaed36 | 12117 | NULL, NULL, 0, &objfile->objfile_obstack); |
0114d602 | 12118 | } |
5c4e30ca | 12119 | } |
9219021c | 12120 | |
639d11d3 | 12121 | if (die->child != NULL) |
d9fa45fe | 12122 | { |
639d11d3 | 12123 | struct die_info *child_die = die->child; |
6e70227d | 12124 | |
d9fa45fe DC |
12125 | while (child_die && child_die->tag) |
12126 | { | |
e7c27a73 | 12127 | process_die (child_die, cu); |
d9fa45fe DC |
12128 | child_die = sibling_die (child_die); |
12129 | } | |
12130 | } | |
38d518c9 EZ |
12131 | } |
12132 | ||
f55ee35c JK |
12133 | /* Read a Fortran module as type. This DIE can be only a declaration used for |
12134 | imported module. Still we need that type as local Fortran "use ... only" | |
12135 | declaration imports depend on the created type in determine_prefix. */ | |
12136 | ||
12137 | static struct type * | |
12138 | read_module_type (struct die_info *die, struct dwarf2_cu *cu) | |
12139 | { | |
12140 | struct objfile *objfile = cu->objfile; | |
15d034d0 | 12141 | const char *module_name; |
f55ee35c JK |
12142 | struct type *type; |
12143 | ||
12144 | module_name = dwarf2_name (die, cu); | |
12145 | if (!module_name) | |
3e43a32a MS |
12146 | complaint (&symfile_complaints, |
12147 | _("DW_TAG_module has no name, offset 0x%x"), | |
b64f50a1 | 12148 | die->offset.sect_off); |
f55ee35c JK |
12149 | type = init_type (TYPE_CODE_MODULE, 0, 0, module_name, objfile); |
12150 | ||
12151 | /* determine_prefix uses TYPE_TAG_NAME. */ | |
12152 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
12153 | ||
12154 | return set_die_type (die, type, cu); | |
12155 | } | |
12156 | ||
5d7cb8df JK |
12157 | /* Read a Fortran module. */ |
12158 | ||
12159 | static void | |
12160 | read_module (struct die_info *die, struct dwarf2_cu *cu) | |
12161 | { | |
12162 | struct die_info *child_die = die->child; | |
12163 | ||
5d7cb8df JK |
12164 | while (child_die && child_die->tag) |
12165 | { | |
12166 | process_die (child_die, cu); | |
12167 | child_die = sibling_die (child_die); | |
12168 | } | |
12169 | } | |
12170 | ||
38d518c9 EZ |
12171 | /* Return the name of the namespace represented by DIE. Set |
12172 | *IS_ANONYMOUS to tell whether or not the namespace is an anonymous | |
12173 | namespace. */ | |
12174 | ||
12175 | static const char * | |
e142c38c | 12176 | namespace_name (struct die_info *die, int *is_anonymous, struct dwarf2_cu *cu) |
38d518c9 EZ |
12177 | { |
12178 | struct die_info *current_die; | |
12179 | const char *name = NULL; | |
12180 | ||
12181 | /* Loop through the extensions until we find a name. */ | |
12182 | ||
12183 | for (current_die = die; | |
12184 | current_die != NULL; | |
f2f0e013 | 12185 | current_die = dwarf2_extension (die, &cu)) |
38d518c9 | 12186 | { |
e142c38c | 12187 | name = dwarf2_name (current_die, cu); |
38d518c9 EZ |
12188 | if (name != NULL) |
12189 | break; | |
12190 | } | |
12191 | ||
12192 | /* Is it an anonymous namespace? */ | |
12193 | ||
12194 | *is_anonymous = (name == NULL); | |
12195 | if (*is_anonymous) | |
2b1dbab0 | 12196 | name = CP_ANONYMOUS_NAMESPACE_STR; |
38d518c9 EZ |
12197 | |
12198 | return name; | |
d9fa45fe DC |
12199 | } |
12200 | ||
c906108c SS |
12201 | /* Extract all information from a DW_TAG_pointer_type DIE and add to |
12202 | the user defined type vector. */ | |
12203 | ||
f792889a | 12204 | static struct type * |
e7c27a73 | 12205 | read_tag_pointer_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 12206 | { |
5e2b427d | 12207 | struct gdbarch *gdbarch = get_objfile_arch (cu->objfile); |
e7c27a73 | 12208 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 12209 | struct type *type; |
8b2dbe47 KB |
12210 | struct attribute *attr_byte_size; |
12211 | struct attribute *attr_address_class; | |
12212 | int byte_size, addr_class; | |
7e314c57 JK |
12213 | struct type *target_type; |
12214 | ||
12215 | target_type = die_type (die, cu); | |
c906108c | 12216 | |
7e314c57 JK |
12217 | /* The die_type call above may have already set the type for this DIE. */ |
12218 | type = get_die_type (die, cu); | |
12219 | if (type) | |
12220 | return type; | |
12221 | ||
12222 | type = lookup_pointer_type (target_type); | |
8b2dbe47 | 12223 | |
e142c38c | 12224 | attr_byte_size = dwarf2_attr (die, DW_AT_byte_size, cu); |
8b2dbe47 KB |
12225 | if (attr_byte_size) |
12226 | byte_size = DW_UNSND (attr_byte_size); | |
c906108c | 12227 | else |
8b2dbe47 KB |
12228 | byte_size = cu_header->addr_size; |
12229 | ||
e142c38c | 12230 | attr_address_class = dwarf2_attr (die, DW_AT_address_class, cu); |
8b2dbe47 KB |
12231 | if (attr_address_class) |
12232 | addr_class = DW_UNSND (attr_address_class); | |
12233 | else | |
12234 | addr_class = DW_ADDR_none; | |
12235 | ||
12236 | /* If the pointer size or address class is different than the | |
12237 | default, create a type variant marked as such and set the | |
12238 | length accordingly. */ | |
12239 | if (TYPE_LENGTH (type) != byte_size || addr_class != DW_ADDR_none) | |
c906108c | 12240 | { |
5e2b427d | 12241 | if (gdbarch_address_class_type_flags_p (gdbarch)) |
8b2dbe47 KB |
12242 | { |
12243 | int type_flags; | |
12244 | ||
849957d9 | 12245 | type_flags = gdbarch_address_class_type_flags |
5e2b427d | 12246 | (gdbarch, byte_size, addr_class); |
876cecd0 TT |
12247 | gdb_assert ((type_flags & ~TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL) |
12248 | == 0); | |
8b2dbe47 KB |
12249 | type = make_type_with_address_space (type, type_flags); |
12250 | } | |
12251 | else if (TYPE_LENGTH (type) != byte_size) | |
12252 | { | |
3e43a32a MS |
12253 | complaint (&symfile_complaints, |
12254 | _("invalid pointer size %d"), byte_size); | |
8b2dbe47 | 12255 | } |
6e70227d | 12256 | else |
9a619af0 MS |
12257 | { |
12258 | /* Should we also complain about unhandled address classes? */ | |
12259 | } | |
c906108c | 12260 | } |
8b2dbe47 KB |
12261 | |
12262 | TYPE_LENGTH (type) = byte_size; | |
f792889a | 12263 | return set_die_type (die, type, cu); |
c906108c SS |
12264 | } |
12265 | ||
12266 | /* Extract all information from a DW_TAG_ptr_to_member_type DIE and add to | |
12267 | the user defined type vector. */ | |
12268 | ||
f792889a | 12269 | static struct type * |
e7c27a73 | 12270 | read_tag_ptr_to_member_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
12271 | { |
12272 | struct type *type; | |
12273 | struct type *to_type; | |
12274 | struct type *domain; | |
12275 | ||
e7c27a73 DJ |
12276 | to_type = die_type (die, cu); |
12277 | domain = die_containing_type (die, cu); | |
0d5de010 | 12278 | |
7e314c57 JK |
12279 | /* The calls above may have already set the type for this DIE. */ |
12280 | type = get_die_type (die, cu); | |
12281 | if (type) | |
12282 | return type; | |
12283 | ||
0d5de010 DJ |
12284 | if (TYPE_CODE (check_typedef (to_type)) == TYPE_CODE_METHOD) |
12285 | type = lookup_methodptr_type (to_type); | |
7078baeb TT |
12286 | else if (TYPE_CODE (check_typedef (to_type)) == TYPE_CODE_FUNC) |
12287 | { | |
12288 | struct type *new_type = alloc_type (cu->objfile); | |
12289 | ||
12290 | smash_to_method_type (new_type, domain, TYPE_TARGET_TYPE (to_type), | |
12291 | TYPE_FIELDS (to_type), TYPE_NFIELDS (to_type), | |
12292 | TYPE_VARARGS (to_type)); | |
12293 | type = lookup_methodptr_type (new_type); | |
12294 | } | |
0d5de010 DJ |
12295 | else |
12296 | type = lookup_memberptr_type (to_type, domain); | |
c906108c | 12297 | |
f792889a | 12298 | return set_die_type (die, type, cu); |
c906108c SS |
12299 | } |
12300 | ||
12301 | /* Extract all information from a DW_TAG_reference_type DIE and add to | |
12302 | the user defined type vector. */ | |
12303 | ||
f792889a | 12304 | static struct type * |
e7c27a73 | 12305 | read_tag_reference_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 12306 | { |
e7c27a73 | 12307 | struct comp_unit_head *cu_header = &cu->header; |
7e314c57 | 12308 | struct type *type, *target_type; |
c906108c SS |
12309 | struct attribute *attr; |
12310 | ||
7e314c57 JK |
12311 | target_type = die_type (die, cu); |
12312 | ||
12313 | /* The die_type call above may have already set the type for this DIE. */ | |
12314 | type = get_die_type (die, cu); | |
12315 | if (type) | |
12316 | return type; | |
12317 | ||
12318 | type = lookup_reference_type (target_type); | |
e142c38c | 12319 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
12320 | if (attr) |
12321 | { | |
12322 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
12323 | } | |
12324 | else | |
12325 | { | |
107d2387 | 12326 | TYPE_LENGTH (type) = cu_header->addr_size; |
c906108c | 12327 | } |
f792889a | 12328 | return set_die_type (die, type, cu); |
c906108c SS |
12329 | } |
12330 | ||
f792889a | 12331 | static struct type * |
e7c27a73 | 12332 | read_tag_const_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 12333 | { |
f792889a | 12334 | struct type *base_type, *cv_type; |
c906108c | 12335 | |
e7c27a73 | 12336 | base_type = die_type (die, cu); |
7e314c57 JK |
12337 | |
12338 | /* The die_type call above may have already set the type for this DIE. */ | |
12339 | cv_type = get_die_type (die, cu); | |
12340 | if (cv_type) | |
12341 | return cv_type; | |
12342 | ||
2f608a3a KW |
12343 | /* In case the const qualifier is applied to an array type, the element type |
12344 | is so qualified, not the array type (section 6.7.3 of C99). */ | |
12345 | if (TYPE_CODE (base_type) == TYPE_CODE_ARRAY) | |
12346 | { | |
12347 | struct type *el_type, *inner_array; | |
12348 | ||
12349 | base_type = copy_type (base_type); | |
12350 | inner_array = base_type; | |
12351 | ||
12352 | while (TYPE_CODE (TYPE_TARGET_TYPE (inner_array)) == TYPE_CODE_ARRAY) | |
12353 | { | |
12354 | TYPE_TARGET_TYPE (inner_array) = | |
12355 | copy_type (TYPE_TARGET_TYPE (inner_array)); | |
12356 | inner_array = TYPE_TARGET_TYPE (inner_array); | |
12357 | } | |
12358 | ||
12359 | el_type = TYPE_TARGET_TYPE (inner_array); | |
12360 | TYPE_TARGET_TYPE (inner_array) = | |
12361 | make_cv_type (1, TYPE_VOLATILE (el_type), el_type, NULL); | |
12362 | ||
12363 | return set_die_type (die, base_type, cu); | |
12364 | } | |
12365 | ||
f792889a DJ |
12366 | cv_type = make_cv_type (1, TYPE_VOLATILE (base_type), base_type, 0); |
12367 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
12368 | } |
12369 | ||
f792889a | 12370 | static struct type * |
e7c27a73 | 12371 | read_tag_volatile_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 12372 | { |
f792889a | 12373 | struct type *base_type, *cv_type; |
c906108c | 12374 | |
e7c27a73 | 12375 | base_type = die_type (die, cu); |
7e314c57 JK |
12376 | |
12377 | /* The die_type call above may have already set the type for this DIE. */ | |
12378 | cv_type = get_die_type (die, cu); | |
12379 | if (cv_type) | |
12380 | return cv_type; | |
12381 | ||
f792889a DJ |
12382 | cv_type = make_cv_type (TYPE_CONST (base_type), 1, base_type, 0); |
12383 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
12384 | } |
12385 | ||
06d66ee9 TT |
12386 | /* Handle DW_TAG_restrict_type. */ |
12387 | ||
12388 | static struct type * | |
12389 | read_tag_restrict_type (struct die_info *die, struct dwarf2_cu *cu) | |
12390 | { | |
12391 | struct type *base_type, *cv_type; | |
12392 | ||
12393 | base_type = die_type (die, cu); | |
12394 | ||
12395 | /* The die_type call above may have already set the type for this DIE. */ | |
12396 | cv_type = get_die_type (die, cu); | |
12397 | if (cv_type) | |
12398 | return cv_type; | |
12399 | ||
12400 | cv_type = make_restrict_type (base_type); | |
12401 | return set_die_type (die, cv_type, cu); | |
12402 | } | |
12403 | ||
c906108c SS |
12404 | /* Extract all information from a DW_TAG_string_type DIE and add to |
12405 | the user defined type vector. It isn't really a user defined type, | |
12406 | but it behaves like one, with other DIE's using an AT_user_def_type | |
12407 | attribute to reference it. */ | |
12408 | ||
f792889a | 12409 | static struct type * |
e7c27a73 | 12410 | read_tag_string_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 12411 | { |
e7c27a73 | 12412 | struct objfile *objfile = cu->objfile; |
3b7538c0 | 12413 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
12414 | struct type *type, *range_type, *index_type, *char_type; |
12415 | struct attribute *attr; | |
12416 | unsigned int length; | |
12417 | ||
e142c38c | 12418 | attr = dwarf2_attr (die, DW_AT_string_length, cu); |
c906108c SS |
12419 | if (attr) |
12420 | { | |
12421 | length = DW_UNSND (attr); | |
12422 | } | |
12423 | else | |
12424 | { | |
0963b4bd | 12425 | /* Check for the DW_AT_byte_size attribute. */ |
e142c38c | 12426 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
b21b22e0 PS |
12427 | if (attr) |
12428 | { | |
12429 | length = DW_UNSND (attr); | |
12430 | } | |
12431 | else | |
12432 | { | |
12433 | length = 1; | |
12434 | } | |
c906108c | 12435 | } |
6ccb9162 | 12436 | |
46bf5051 | 12437 | index_type = objfile_type (objfile)->builtin_int; |
c906108c | 12438 | range_type = create_range_type (NULL, index_type, 1, length); |
3b7538c0 UW |
12439 | char_type = language_string_char_type (cu->language_defn, gdbarch); |
12440 | type = create_string_type (NULL, char_type, range_type); | |
6ccb9162 | 12441 | |
f792889a | 12442 | return set_die_type (die, type, cu); |
c906108c SS |
12443 | } |
12444 | ||
12445 | /* Handle DIES due to C code like: | |
12446 | ||
12447 | struct foo | |
c5aa993b JM |
12448 | { |
12449 | int (*funcp)(int a, long l); | |
12450 | int b; | |
12451 | }; | |
c906108c | 12452 | |
0963b4bd | 12453 | ('funcp' generates a DW_TAG_subroutine_type DIE). */ |
c906108c | 12454 | |
f792889a | 12455 | static struct type * |
e7c27a73 | 12456 | read_subroutine_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 12457 | { |
bb5ed363 | 12458 | struct objfile *objfile = cu->objfile; |
0963b4bd MS |
12459 | struct type *type; /* Type that this function returns. */ |
12460 | struct type *ftype; /* Function that returns above type. */ | |
c906108c SS |
12461 | struct attribute *attr; |
12462 | ||
e7c27a73 | 12463 | type = die_type (die, cu); |
7e314c57 JK |
12464 | |
12465 | /* The die_type call above may have already set the type for this DIE. */ | |
12466 | ftype = get_die_type (die, cu); | |
12467 | if (ftype) | |
12468 | return ftype; | |
12469 | ||
0c8b41f1 | 12470 | ftype = lookup_function_type (type); |
c906108c | 12471 | |
5b8101ae | 12472 | /* All functions in C++, Pascal and Java have prototypes. */ |
e142c38c | 12473 | attr = dwarf2_attr (die, DW_AT_prototyped, cu); |
c906108c | 12474 | if ((attr && (DW_UNSND (attr) != 0)) |
987504bb | 12475 | || cu->language == language_cplus |
5b8101ae PM |
12476 | || cu->language == language_java |
12477 | || cu->language == language_pascal) | |
876cecd0 | 12478 | TYPE_PROTOTYPED (ftype) = 1; |
a6c727b2 DJ |
12479 | else if (producer_is_realview (cu->producer)) |
12480 | /* RealView does not emit DW_AT_prototyped. We can not | |
12481 | distinguish prototyped and unprototyped functions; default to | |
12482 | prototyped, since that is more common in modern code (and | |
12483 | RealView warns about unprototyped functions). */ | |
12484 | TYPE_PROTOTYPED (ftype) = 1; | |
c906108c | 12485 | |
c055b101 CV |
12486 | /* Store the calling convention in the type if it's available in |
12487 | the subroutine die. Otherwise set the calling convention to | |
12488 | the default value DW_CC_normal. */ | |
12489 | attr = dwarf2_attr (die, DW_AT_calling_convention, cu); | |
54fcddd0 UW |
12490 | if (attr) |
12491 | TYPE_CALLING_CONVENTION (ftype) = DW_UNSND (attr); | |
12492 | else if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL")) | |
12493 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_GDB_IBM_OpenCL; | |
12494 | else | |
12495 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_normal; | |
76c10ea2 GM |
12496 | |
12497 | /* We need to add the subroutine type to the die immediately so | |
12498 | we don't infinitely recurse when dealing with parameters | |
0963b4bd | 12499 | declared as the same subroutine type. */ |
76c10ea2 | 12500 | set_die_type (die, ftype, cu); |
6e70227d | 12501 | |
639d11d3 | 12502 | if (die->child != NULL) |
c906108c | 12503 | { |
bb5ed363 | 12504 | struct type *void_type = objfile_type (objfile)->builtin_void; |
c906108c | 12505 | struct die_info *child_die; |
8072405b | 12506 | int nparams, iparams; |
c906108c SS |
12507 | |
12508 | /* Count the number of parameters. | |
12509 | FIXME: GDB currently ignores vararg functions, but knows about | |
12510 | vararg member functions. */ | |
8072405b | 12511 | nparams = 0; |
639d11d3 | 12512 | child_die = die->child; |
c906108c SS |
12513 | while (child_die && child_die->tag) |
12514 | { | |
12515 | if (child_die->tag == DW_TAG_formal_parameter) | |
12516 | nparams++; | |
12517 | else if (child_die->tag == DW_TAG_unspecified_parameters) | |
876cecd0 | 12518 | TYPE_VARARGS (ftype) = 1; |
c906108c SS |
12519 | child_die = sibling_die (child_die); |
12520 | } | |
12521 | ||
12522 | /* Allocate storage for parameters and fill them in. */ | |
12523 | TYPE_NFIELDS (ftype) = nparams; | |
12524 | TYPE_FIELDS (ftype) = (struct field *) | |
ae5a43e0 | 12525 | TYPE_ZALLOC (ftype, nparams * sizeof (struct field)); |
c906108c | 12526 | |
8072405b JK |
12527 | /* TYPE_FIELD_TYPE must never be NULL. Pre-fill the array to ensure it |
12528 | even if we error out during the parameters reading below. */ | |
12529 | for (iparams = 0; iparams < nparams; iparams++) | |
12530 | TYPE_FIELD_TYPE (ftype, iparams) = void_type; | |
12531 | ||
12532 | iparams = 0; | |
639d11d3 | 12533 | child_die = die->child; |
c906108c SS |
12534 | while (child_die && child_die->tag) |
12535 | { | |
12536 | if (child_die->tag == DW_TAG_formal_parameter) | |
12537 | { | |
3ce3b1ba PA |
12538 | struct type *arg_type; |
12539 | ||
12540 | /* DWARF version 2 has no clean way to discern C++ | |
12541 | static and non-static member functions. G++ helps | |
12542 | GDB by marking the first parameter for non-static | |
12543 | member functions (which is the this pointer) as | |
12544 | artificial. We pass this information to | |
12545 | dwarf2_add_member_fn via TYPE_FIELD_ARTIFICIAL. | |
12546 | ||
12547 | DWARF version 3 added DW_AT_object_pointer, which GCC | |
12548 | 4.5 does not yet generate. */ | |
e142c38c | 12549 | attr = dwarf2_attr (child_die, DW_AT_artificial, cu); |
c906108c SS |
12550 | if (attr) |
12551 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = DW_UNSND (attr); | |
12552 | else | |
418835cc KS |
12553 | { |
12554 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; | |
12555 | ||
12556 | /* GCC/43521: In java, the formal parameter | |
12557 | "this" is sometimes not marked with DW_AT_artificial. */ | |
12558 | if (cu->language == language_java) | |
12559 | { | |
12560 | const char *name = dwarf2_name (child_die, cu); | |
9a619af0 | 12561 | |
418835cc KS |
12562 | if (name && !strcmp (name, "this")) |
12563 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 1; | |
12564 | } | |
12565 | } | |
3ce3b1ba PA |
12566 | arg_type = die_type (child_die, cu); |
12567 | ||
12568 | /* RealView does not mark THIS as const, which the testsuite | |
12569 | expects. GCC marks THIS as const in method definitions, | |
12570 | but not in the class specifications (GCC PR 43053). */ | |
12571 | if (cu->language == language_cplus && !TYPE_CONST (arg_type) | |
12572 | && TYPE_FIELD_ARTIFICIAL (ftype, iparams)) | |
12573 | { | |
12574 | int is_this = 0; | |
12575 | struct dwarf2_cu *arg_cu = cu; | |
12576 | const char *name = dwarf2_name (child_die, cu); | |
12577 | ||
12578 | attr = dwarf2_attr (die, DW_AT_object_pointer, cu); | |
12579 | if (attr) | |
12580 | { | |
12581 | /* If the compiler emits this, use it. */ | |
12582 | if (follow_die_ref (die, attr, &arg_cu) == child_die) | |
12583 | is_this = 1; | |
12584 | } | |
12585 | else if (name && strcmp (name, "this") == 0) | |
12586 | /* Function definitions will have the argument names. */ | |
12587 | is_this = 1; | |
12588 | else if (name == NULL && iparams == 0) | |
12589 | /* Declarations may not have the names, so like | |
12590 | elsewhere in GDB, assume an artificial first | |
12591 | argument is "this". */ | |
12592 | is_this = 1; | |
12593 | ||
12594 | if (is_this) | |
12595 | arg_type = make_cv_type (1, TYPE_VOLATILE (arg_type), | |
12596 | arg_type, 0); | |
12597 | } | |
12598 | ||
12599 | TYPE_FIELD_TYPE (ftype, iparams) = arg_type; | |
c906108c SS |
12600 | iparams++; |
12601 | } | |
12602 | child_die = sibling_die (child_die); | |
12603 | } | |
12604 | } | |
12605 | ||
76c10ea2 | 12606 | return ftype; |
c906108c SS |
12607 | } |
12608 | ||
f792889a | 12609 | static struct type * |
e7c27a73 | 12610 | read_typedef (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 12611 | { |
e7c27a73 | 12612 | struct objfile *objfile = cu->objfile; |
0114d602 | 12613 | const char *name = NULL; |
3c8e0968 | 12614 | struct type *this_type, *target_type; |
c906108c | 12615 | |
94af9270 | 12616 | name = dwarf2_full_name (NULL, die, cu); |
f792889a | 12617 | this_type = init_type (TYPE_CODE_TYPEDEF, 0, |
0114d602 | 12618 | TYPE_FLAG_TARGET_STUB, NULL, objfile); |
abee88f2 | 12619 | TYPE_NAME (this_type) = name; |
f792889a | 12620 | set_die_type (die, this_type, cu); |
3c8e0968 DE |
12621 | target_type = die_type (die, cu); |
12622 | if (target_type != this_type) | |
12623 | TYPE_TARGET_TYPE (this_type) = target_type; | |
12624 | else | |
12625 | { | |
12626 | /* Self-referential typedefs are, it seems, not allowed by the DWARF | |
12627 | spec and cause infinite loops in GDB. */ | |
12628 | complaint (&symfile_complaints, | |
12629 | _("Self-referential DW_TAG_typedef " | |
12630 | "- DIE at 0x%x [in module %s]"), | |
b64f50a1 | 12631 | die->offset.sect_off, objfile->name); |
3c8e0968 DE |
12632 | TYPE_TARGET_TYPE (this_type) = NULL; |
12633 | } | |
f792889a | 12634 | return this_type; |
c906108c SS |
12635 | } |
12636 | ||
12637 | /* Find a representation of a given base type and install | |
12638 | it in the TYPE field of the die. */ | |
12639 | ||
f792889a | 12640 | static struct type * |
e7c27a73 | 12641 | read_base_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 12642 | { |
e7c27a73 | 12643 | struct objfile *objfile = cu->objfile; |
c906108c SS |
12644 | struct type *type; |
12645 | struct attribute *attr; | |
12646 | int encoding = 0, size = 0; | |
15d034d0 | 12647 | const char *name; |
6ccb9162 UW |
12648 | enum type_code code = TYPE_CODE_INT; |
12649 | int type_flags = 0; | |
12650 | struct type *target_type = NULL; | |
c906108c | 12651 | |
e142c38c | 12652 | attr = dwarf2_attr (die, DW_AT_encoding, cu); |
c906108c SS |
12653 | if (attr) |
12654 | { | |
12655 | encoding = DW_UNSND (attr); | |
12656 | } | |
e142c38c | 12657 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
12658 | if (attr) |
12659 | { | |
12660 | size = DW_UNSND (attr); | |
12661 | } | |
39cbfefa | 12662 | name = dwarf2_name (die, cu); |
6ccb9162 | 12663 | if (!name) |
c906108c | 12664 | { |
6ccb9162 UW |
12665 | complaint (&symfile_complaints, |
12666 | _("DW_AT_name missing from DW_TAG_base_type")); | |
c906108c | 12667 | } |
6ccb9162 UW |
12668 | |
12669 | switch (encoding) | |
c906108c | 12670 | { |
6ccb9162 UW |
12671 | case DW_ATE_address: |
12672 | /* Turn DW_ATE_address into a void * pointer. */ | |
12673 | code = TYPE_CODE_PTR; | |
12674 | type_flags |= TYPE_FLAG_UNSIGNED; | |
12675 | target_type = init_type (TYPE_CODE_VOID, 1, 0, NULL, objfile); | |
12676 | break; | |
12677 | case DW_ATE_boolean: | |
12678 | code = TYPE_CODE_BOOL; | |
12679 | type_flags |= TYPE_FLAG_UNSIGNED; | |
12680 | break; | |
12681 | case DW_ATE_complex_float: | |
12682 | code = TYPE_CODE_COMPLEX; | |
12683 | target_type = init_type (TYPE_CODE_FLT, size / 2, 0, NULL, objfile); | |
12684 | break; | |
12685 | case DW_ATE_decimal_float: | |
12686 | code = TYPE_CODE_DECFLOAT; | |
12687 | break; | |
12688 | case DW_ATE_float: | |
12689 | code = TYPE_CODE_FLT; | |
12690 | break; | |
12691 | case DW_ATE_signed: | |
12692 | break; | |
12693 | case DW_ATE_unsigned: | |
12694 | type_flags |= TYPE_FLAG_UNSIGNED; | |
3b2b8fea TT |
12695 | if (cu->language == language_fortran |
12696 | && name | |
12697 | && strncmp (name, "character(", sizeof ("character(") - 1) == 0) | |
12698 | code = TYPE_CODE_CHAR; | |
6ccb9162 UW |
12699 | break; |
12700 | case DW_ATE_signed_char: | |
6e70227d | 12701 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea TT |
12702 | || cu->language == language_pascal |
12703 | || cu->language == language_fortran) | |
6ccb9162 UW |
12704 | code = TYPE_CODE_CHAR; |
12705 | break; | |
12706 | case DW_ATE_unsigned_char: | |
868a0084 | 12707 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea TT |
12708 | || cu->language == language_pascal |
12709 | || cu->language == language_fortran) | |
6ccb9162 UW |
12710 | code = TYPE_CODE_CHAR; |
12711 | type_flags |= TYPE_FLAG_UNSIGNED; | |
12712 | break; | |
75079b2b TT |
12713 | case DW_ATE_UTF: |
12714 | /* We just treat this as an integer and then recognize the | |
12715 | type by name elsewhere. */ | |
12716 | break; | |
12717 | ||
6ccb9162 UW |
12718 | default: |
12719 | complaint (&symfile_complaints, _("unsupported DW_AT_encoding: '%s'"), | |
12720 | dwarf_type_encoding_name (encoding)); | |
12721 | break; | |
c906108c | 12722 | } |
6ccb9162 | 12723 | |
0114d602 DJ |
12724 | type = init_type (code, size, type_flags, NULL, objfile); |
12725 | TYPE_NAME (type) = name; | |
6ccb9162 UW |
12726 | TYPE_TARGET_TYPE (type) = target_type; |
12727 | ||
0114d602 | 12728 | if (name && strcmp (name, "char") == 0) |
876cecd0 | 12729 | TYPE_NOSIGN (type) = 1; |
0114d602 | 12730 | |
f792889a | 12731 | return set_die_type (die, type, cu); |
c906108c SS |
12732 | } |
12733 | ||
a02abb62 JB |
12734 | /* Read the given DW_AT_subrange DIE. */ |
12735 | ||
f792889a | 12736 | static struct type * |
a02abb62 JB |
12737 | read_subrange_type (struct die_info *die, struct dwarf2_cu *cu) |
12738 | { | |
12739 | struct type *base_type; | |
12740 | struct type *range_type; | |
12741 | struct attribute *attr; | |
4fae6e18 JK |
12742 | LONGEST low, high; |
12743 | int low_default_is_valid; | |
15d034d0 | 12744 | const char *name; |
43bbcdc2 | 12745 | LONGEST negative_mask; |
e77813c8 | 12746 | |
a02abb62 | 12747 | base_type = die_type (die, cu); |
953ac07e JK |
12748 | /* Preserve BASE_TYPE's original type, just set its LENGTH. */ |
12749 | check_typedef (base_type); | |
a02abb62 | 12750 | |
7e314c57 JK |
12751 | /* The die_type call above may have already set the type for this DIE. */ |
12752 | range_type = get_die_type (die, cu); | |
12753 | if (range_type) | |
12754 | return range_type; | |
12755 | ||
4fae6e18 JK |
12756 | /* Set LOW_DEFAULT_IS_VALID if current language and DWARF version allow |
12757 | omitting DW_AT_lower_bound. */ | |
12758 | switch (cu->language) | |
6e70227d | 12759 | { |
4fae6e18 JK |
12760 | case language_c: |
12761 | case language_cplus: | |
12762 | low = 0; | |
12763 | low_default_is_valid = 1; | |
12764 | break; | |
12765 | case language_fortran: | |
12766 | low = 1; | |
12767 | low_default_is_valid = 1; | |
12768 | break; | |
12769 | case language_d: | |
12770 | case language_java: | |
12771 | case language_objc: | |
12772 | low = 0; | |
12773 | low_default_is_valid = (cu->header.version >= 4); | |
12774 | break; | |
12775 | case language_ada: | |
12776 | case language_m2: | |
12777 | case language_pascal: | |
a02abb62 | 12778 | low = 1; |
4fae6e18 JK |
12779 | low_default_is_valid = (cu->header.version >= 4); |
12780 | break; | |
12781 | default: | |
12782 | low = 0; | |
12783 | low_default_is_valid = 0; | |
12784 | break; | |
a02abb62 JB |
12785 | } |
12786 | ||
dd5e6932 DJ |
12787 | /* FIXME: For variable sized arrays either of these could be |
12788 | a variable rather than a constant value. We'll allow it, | |
12789 | but we don't know how to handle it. */ | |
e142c38c | 12790 | attr = dwarf2_attr (die, DW_AT_lower_bound, cu); |
a02abb62 | 12791 | if (attr) |
4fae6e18 JK |
12792 | low = dwarf2_get_attr_constant_value (attr, low); |
12793 | else if (!low_default_is_valid) | |
12794 | complaint (&symfile_complaints, _("Missing DW_AT_lower_bound " | |
12795 | "- DIE at 0x%x [in module %s]"), | |
12796 | die->offset.sect_off, cu->objfile->name); | |
a02abb62 | 12797 | |
e142c38c | 12798 | attr = dwarf2_attr (die, DW_AT_upper_bound, cu); |
a02abb62 | 12799 | if (attr) |
6e70227d | 12800 | { |
d48323d8 | 12801 | if (attr_form_is_block (attr) || is_ref_attr (attr)) |
a02abb62 JB |
12802 | { |
12803 | /* GCC encodes arrays with unspecified or dynamic length | |
e77813c8 | 12804 | with a DW_FORM_block1 attribute or a reference attribute. |
a02abb62 JB |
12805 | FIXME: GDB does not yet know how to handle dynamic |
12806 | arrays properly, treat them as arrays with unspecified | |
12807 | length for now. | |
12808 | ||
12809 | FIXME: jimb/2003-09-22: GDB does not really know | |
12810 | how to handle arrays of unspecified length | |
12811 | either; we just represent them as zero-length | |
12812 | arrays. Choose an appropriate upper bound given | |
12813 | the lower bound we've computed above. */ | |
12814 | high = low - 1; | |
12815 | } | |
12816 | else | |
12817 | high = dwarf2_get_attr_constant_value (attr, 1); | |
12818 | } | |
e77813c8 PM |
12819 | else |
12820 | { | |
12821 | attr = dwarf2_attr (die, DW_AT_count, cu); | |
12822 | if (attr) | |
12823 | { | |
12824 | int count = dwarf2_get_attr_constant_value (attr, 1); | |
12825 | high = low + count - 1; | |
12826 | } | |
c2ff108b JK |
12827 | else |
12828 | { | |
12829 | /* Unspecified array length. */ | |
12830 | high = low - 1; | |
12831 | } | |
e77813c8 PM |
12832 | } |
12833 | ||
12834 | /* Dwarf-2 specifications explicitly allows to create subrange types | |
12835 | without specifying a base type. | |
12836 | In that case, the base type must be set to the type of | |
12837 | the lower bound, upper bound or count, in that order, if any of these | |
12838 | three attributes references an object that has a type. | |
12839 | If no base type is found, the Dwarf-2 specifications say that | |
12840 | a signed integer type of size equal to the size of an address should | |
12841 | be used. | |
12842 | For the following C code: `extern char gdb_int [];' | |
12843 | GCC produces an empty range DIE. | |
12844 | FIXME: muller/2010-05-28: Possible references to object for low bound, | |
0963b4bd | 12845 | high bound or count are not yet handled by this code. */ |
e77813c8 PM |
12846 | if (TYPE_CODE (base_type) == TYPE_CODE_VOID) |
12847 | { | |
12848 | struct objfile *objfile = cu->objfile; | |
12849 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
12850 | int addr_size = gdbarch_addr_bit (gdbarch) /8; | |
12851 | struct type *int_type = objfile_type (objfile)->builtin_int; | |
12852 | ||
12853 | /* Test "int", "long int", and "long long int" objfile types, | |
12854 | and select the first one having a size above or equal to the | |
12855 | architecture address size. */ | |
12856 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
12857 | base_type = int_type; | |
12858 | else | |
12859 | { | |
12860 | int_type = objfile_type (objfile)->builtin_long; | |
12861 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
12862 | base_type = int_type; | |
12863 | else | |
12864 | { | |
12865 | int_type = objfile_type (objfile)->builtin_long_long; | |
12866 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
12867 | base_type = int_type; | |
12868 | } | |
12869 | } | |
12870 | } | |
a02abb62 | 12871 | |
6e70227d | 12872 | negative_mask = |
43bbcdc2 PH |
12873 | (LONGEST) -1 << (TYPE_LENGTH (base_type) * TARGET_CHAR_BIT - 1); |
12874 | if (!TYPE_UNSIGNED (base_type) && (low & negative_mask)) | |
12875 | low |= negative_mask; | |
12876 | if (!TYPE_UNSIGNED (base_type) && (high & negative_mask)) | |
12877 | high |= negative_mask; | |
12878 | ||
a02abb62 JB |
12879 | range_type = create_range_type (NULL, base_type, low, high); |
12880 | ||
bbb0eef6 JK |
12881 | /* Mark arrays with dynamic length at least as an array of unspecified |
12882 | length. GDB could check the boundary but before it gets implemented at | |
12883 | least allow accessing the array elements. */ | |
d48323d8 | 12884 | if (attr && attr_form_is_block (attr)) |
bbb0eef6 JK |
12885 | TYPE_HIGH_BOUND_UNDEFINED (range_type) = 1; |
12886 | ||
c2ff108b JK |
12887 | /* Ada expects an empty array on no boundary attributes. */ |
12888 | if (attr == NULL && cu->language != language_ada) | |
12889 | TYPE_HIGH_BOUND_UNDEFINED (range_type) = 1; | |
12890 | ||
39cbfefa DJ |
12891 | name = dwarf2_name (die, cu); |
12892 | if (name) | |
12893 | TYPE_NAME (range_type) = name; | |
6e70227d | 12894 | |
e142c38c | 12895 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
a02abb62 JB |
12896 | if (attr) |
12897 | TYPE_LENGTH (range_type) = DW_UNSND (attr); | |
12898 | ||
7e314c57 JK |
12899 | set_die_type (die, range_type, cu); |
12900 | ||
12901 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
12902 | set_descriptive_type (range_type, die, cu); |
12903 | ||
7e314c57 | 12904 | return range_type; |
a02abb62 | 12905 | } |
6e70227d | 12906 | |
f792889a | 12907 | static struct type * |
81a17f79 JB |
12908 | read_unspecified_type (struct die_info *die, struct dwarf2_cu *cu) |
12909 | { | |
12910 | struct type *type; | |
81a17f79 | 12911 | |
81a17f79 JB |
12912 | /* For now, we only support the C meaning of an unspecified type: void. */ |
12913 | ||
0114d602 DJ |
12914 | type = init_type (TYPE_CODE_VOID, 0, 0, NULL, cu->objfile); |
12915 | TYPE_NAME (type) = dwarf2_name (die, cu); | |
81a17f79 | 12916 | |
f792889a | 12917 | return set_die_type (die, type, cu); |
81a17f79 | 12918 | } |
a02abb62 | 12919 | |
639d11d3 DC |
12920 | /* Read a single die and all its descendents. Set the die's sibling |
12921 | field to NULL; set other fields in the die correctly, and set all | |
12922 | of the descendents' fields correctly. Set *NEW_INFO_PTR to the | |
12923 | location of the info_ptr after reading all of those dies. PARENT | |
12924 | is the parent of the die in question. */ | |
12925 | ||
12926 | static struct die_info * | |
dee91e82 DE |
12927 | read_die_and_children (const struct die_reader_specs *reader, |
12928 | gdb_byte *info_ptr, | |
12929 | gdb_byte **new_info_ptr, | |
12930 | struct die_info *parent) | |
639d11d3 DC |
12931 | { |
12932 | struct die_info *die; | |
fe1b8b76 | 12933 | gdb_byte *cur_ptr; |
639d11d3 DC |
12934 | int has_children; |
12935 | ||
93311388 | 12936 | cur_ptr = read_full_die (reader, &die, info_ptr, &has_children); |
1d325ec1 DJ |
12937 | if (die == NULL) |
12938 | { | |
12939 | *new_info_ptr = cur_ptr; | |
12940 | return NULL; | |
12941 | } | |
93311388 | 12942 | store_in_ref_table (die, reader->cu); |
639d11d3 DC |
12943 | |
12944 | if (has_children) | |
348e048f | 12945 | die->child = read_die_and_siblings (reader, cur_ptr, new_info_ptr, die); |
639d11d3 DC |
12946 | else |
12947 | { | |
12948 | die->child = NULL; | |
12949 | *new_info_ptr = cur_ptr; | |
12950 | } | |
12951 | ||
12952 | die->sibling = NULL; | |
12953 | die->parent = parent; | |
12954 | return die; | |
12955 | } | |
12956 | ||
12957 | /* Read a die, all of its descendents, and all of its siblings; set | |
12958 | all of the fields of all of the dies correctly. Arguments are as | |
12959 | in read_die_and_children. */ | |
12960 | ||
12961 | static struct die_info * | |
93311388 DE |
12962 | read_die_and_siblings (const struct die_reader_specs *reader, |
12963 | gdb_byte *info_ptr, | |
fe1b8b76 | 12964 | gdb_byte **new_info_ptr, |
639d11d3 DC |
12965 | struct die_info *parent) |
12966 | { | |
12967 | struct die_info *first_die, *last_sibling; | |
fe1b8b76 | 12968 | gdb_byte *cur_ptr; |
639d11d3 | 12969 | |
c906108c | 12970 | cur_ptr = info_ptr; |
639d11d3 DC |
12971 | first_die = last_sibling = NULL; |
12972 | ||
12973 | while (1) | |
c906108c | 12974 | { |
639d11d3 | 12975 | struct die_info *die |
dee91e82 | 12976 | = read_die_and_children (reader, cur_ptr, &cur_ptr, parent); |
639d11d3 | 12977 | |
1d325ec1 | 12978 | if (die == NULL) |
c906108c | 12979 | { |
639d11d3 DC |
12980 | *new_info_ptr = cur_ptr; |
12981 | return first_die; | |
c906108c | 12982 | } |
1d325ec1 DJ |
12983 | |
12984 | if (!first_die) | |
12985 | first_die = die; | |
c906108c | 12986 | else |
1d325ec1 DJ |
12987 | last_sibling->sibling = die; |
12988 | ||
12989 | last_sibling = die; | |
c906108c | 12990 | } |
c906108c SS |
12991 | } |
12992 | ||
3019eac3 DE |
12993 | /* Read a die and all its attributes, leave space for NUM_EXTRA_ATTRS |
12994 | attributes. | |
12995 | The caller is responsible for filling in the extra attributes | |
12996 | and updating (*DIEP)->num_attrs. | |
12997 | Set DIEP to point to a newly allocated die with its information, | |
12998 | except for its child, sibling, and parent fields. | |
12999 | Set HAS_CHILDREN to tell whether the die has children or not. */ | |
93311388 DE |
13000 | |
13001 | static gdb_byte * | |
3019eac3 DE |
13002 | read_full_die_1 (const struct die_reader_specs *reader, |
13003 | struct die_info **diep, gdb_byte *info_ptr, | |
13004 | int *has_children, int num_extra_attrs) | |
93311388 | 13005 | { |
b64f50a1 JK |
13006 | unsigned int abbrev_number, bytes_read, i; |
13007 | sect_offset offset; | |
93311388 DE |
13008 | struct abbrev_info *abbrev; |
13009 | struct die_info *die; | |
13010 | struct dwarf2_cu *cu = reader->cu; | |
13011 | bfd *abfd = reader->abfd; | |
13012 | ||
b64f50a1 | 13013 | offset.sect_off = info_ptr - reader->buffer; |
93311388 DE |
13014 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
13015 | info_ptr += bytes_read; | |
13016 | if (!abbrev_number) | |
13017 | { | |
13018 | *diep = NULL; | |
13019 | *has_children = 0; | |
13020 | return info_ptr; | |
13021 | } | |
13022 | ||
433df2d4 | 13023 | abbrev = abbrev_table_lookup_abbrev (cu->abbrev_table, abbrev_number); |
93311388 | 13024 | if (!abbrev) |
348e048f DE |
13025 | error (_("Dwarf Error: could not find abbrev number %d [in module %s]"), |
13026 | abbrev_number, | |
13027 | bfd_get_filename (abfd)); | |
13028 | ||
3019eac3 | 13029 | die = dwarf_alloc_die (cu, abbrev->num_attrs + num_extra_attrs); |
93311388 DE |
13030 | die->offset = offset; |
13031 | die->tag = abbrev->tag; | |
13032 | die->abbrev = abbrev_number; | |
13033 | ||
3019eac3 DE |
13034 | /* Make the result usable. |
13035 | The caller needs to update num_attrs after adding the extra | |
13036 | attributes. */ | |
93311388 DE |
13037 | die->num_attrs = abbrev->num_attrs; |
13038 | ||
13039 | for (i = 0; i < abbrev->num_attrs; ++i) | |
dee91e82 DE |
13040 | info_ptr = read_attribute (reader, &die->attrs[i], &abbrev->attrs[i], |
13041 | info_ptr); | |
93311388 DE |
13042 | |
13043 | *diep = die; | |
13044 | *has_children = abbrev->has_children; | |
13045 | return info_ptr; | |
13046 | } | |
13047 | ||
3019eac3 DE |
13048 | /* Read a die and all its attributes. |
13049 | Set DIEP to point to a newly allocated die with its information, | |
13050 | except for its child, sibling, and parent fields. | |
13051 | Set HAS_CHILDREN to tell whether the die has children or not. */ | |
13052 | ||
13053 | static gdb_byte * | |
13054 | read_full_die (const struct die_reader_specs *reader, | |
13055 | struct die_info **diep, gdb_byte *info_ptr, | |
13056 | int *has_children) | |
13057 | { | |
13058 | return read_full_die_1 (reader, diep, info_ptr, has_children, 0); | |
13059 | } | |
433df2d4 DE |
13060 | \f |
13061 | /* Abbreviation tables. | |
3019eac3 | 13062 | |
433df2d4 | 13063 | In DWARF version 2, the description of the debugging information is |
c906108c SS |
13064 | stored in a separate .debug_abbrev section. Before we read any |
13065 | dies from a section we read in all abbreviations and install them | |
433df2d4 DE |
13066 | in a hash table. */ |
13067 | ||
13068 | /* Allocate space for a struct abbrev_info object in ABBREV_TABLE. */ | |
13069 | ||
13070 | static struct abbrev_info * | |
13071 | abbrev_table_alloc_abbrev (struct abbrev_table *abbrev_table) | |
13072 | { | |
13073 | struct abbrev_info *abbrev; | |
13074 | ||
13075 | abbrev = (struct abbrev_info *) | |
13076 | obstack_alloc (&abbrev_table->abbrev_obstack, sizeof (struct abbrev_info)); | |
13077 | memset (abbrev, 0, sizeof (struct abbrev_info)); | |
13078 | return abbrev; | |
13079 | } | |
13080 | ||
13081 | /* Add an abbreviation to the table. */ | |
c906108c SS |
13082 | |
13083 | static void | |
433df2d4 DE |
13084 | abbrev_table_add_abbrev (struct abbrev_table *abbrev_table, |
13085 | unsigned int abbrev_number, | |
13086 | struct abbrev_info *abbrev) | |
13087 | { | |
13088 | unsigned int hash_number; | |
13089 | ||
13090 | hash_number = abbrev_number % ABBREV_HASH_SIZE; | |
13091 | abbrev->next = abbrev_table->abbrevs[hash_number]; | |
13092 | abbrev_table->abbrevs[hash_number] = abbrev; | |
13093 | } | |
dee91e82 | 13094 | |
433df2d4 DE |
13095 | /* Look up an abbrev in the table. |
13096 | Returns NULL if the abbrev is not found. */ | |
13097 | ||
13098 | static struct abbrev_info * | |
13099 | abbrev_table_lookup_abbrev (const struct abbrev_table *abbrev_table, | |
13100 | unsigned int abbrev_number) | |
c906108c | 13101 | { |
433df2d4 DE |
13102 | unsigned int hash_number; |
13103 | struct abbrev_info *abbrev; | |
13104 | ||
13105 | hash_number = abbrev_number % ABBREV_HASH_SIZE; | |
13106 | abbrev = abbrev_table->abbrevs[hash_number]; | |
13107 | ||
13108 | while (abbrev) | |
13109 | { | |
13110 | if (abbrev->number == abbrev_number) | |
13111 | return abbrev; | |
13112 | abbrev = abbrev->next; | |
13113 | } | |
13114 | return NULL; | |
13115 | } | |
13116 | ||
13117 | /* Read in an abbrev table. */ | |
13118 | ||
13119 | static struct abbrev_table * | |
13120 | abbrev_table_read_table (struct dwarf2_section_info *section, | |
13121 | sect_offset offset) | |
13122 | { | |
13123 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
13124 | bfd *abfd = section->asection->owner; | |
13125 | struct abbrev_table *abbrev_table; | |
fe1b8b76 | 13126 | gdb_byte *abbrev_ptr; |
c906108c SS |
13127 | struct abbrev_info *cur_abbrev; |
13128 | unsigned int abbrev_number, bytes_read, abbrev_name; | |
433df2d4 | 13129 | unsigned int abbrev_form; |
f3dd6933 DJ |
13130 | struct attr_abbrev *cur_attrs; |
13131 | unsigned int allocated_attrs; | |
c906108c | 13132 | |
433df2d4 | 13133 | abbrev_table = XMALLOC (struct abbrev_table); |
f4dc4d17 | 13134 | abbrev_table->offset = offset; |
433df2d4 DE |
13135 | obstack_init (&abbrev_table->abbrev_obstack); |
13136 | abbrev_table->abbrevs = obstack_alloc (&abbrev_table->abbrev_obstack, | |
13137 | (ABBREV_HASH_SIZE | |
13138 | * sizeof (struct abbrev_info *))); | |
13139 | memset (abbrev_table->abbrevs, 0, | |
13140 | ABBREV_HASH_SIZE * sizeof (struct abbrev_info *)); | |
c906108c | 13141 | |
433df2d4 DE |
13142 | dwarf2_read_section (objfile, section); |
13143 | abbrev_ptr = section->buffer + offset.sect_off; | |
c906108c SS |
13144 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
13145 | abbrev_ptr += bytes_read; | |
13146 | ||
f3dd6933 DJ |
13147 | allocated_attrs = ATTR_ALLOC_CHUNK; |
13148 | cur_attrs = xmalloc (allocated_attrs * sizeof (struct attr_abbrev)); | |
6e70227d | 13149 | |
0963b4bd | 13150 | /* Loop until we reach an abbrev number of 0. */ |
c906108c SS |
13151 | while (abbrev_number) |
13152 | { | |
433df2d4 | 13153 | cur_abbrev = abbrev_table_alloc_abbrev (abbrev_table); |
c906108c SS |
13154 | |
13155 | /* read in abbrev header */ | |
13156 | cur_abbrev->number = abbrev_number; | |
13157 | cur_abbrev->tag = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
13158 | abbrev_ptr += bytes_read; | |
13159 | cur_abbrev->has_children = read_1_byte (abfd, abbrev_ptr); | |
13160 | abbrev_ptr += 1; | |
13161 | ||
13162 | /* now read in declarations */ | |
13163 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
13164 | abbrev_ptr += bytes_read; | |
13165 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
13166 | abbrev_ptr += bytes_read; | |
13167 | while (abbrev_name) | |
13168 | { | |
f3dd6933 | 13169 | if (cur_abbrev->num_attrs == allocated_attrs) |
c906108c | 13170 | { |
f3dd6933 DJ |
13171 | allocated_attrs += ATTR_ALLOC_CHUNK; |
13172 | cur_attrs | |
13173 | = xrealloc (cur_attrs, (allocated_attrs | |
13174 | * sizeof (struct attr_abbrev))); | |
c906108c | 13175 | } |
ae038cb0 | 13176 | |
f3dd6933 DJ |
13177 | cur_attrs[cur_abbrev->num_attrs].name = abbrev_name; |
13178 | cur_attrs[cur_abbrev->num_attrs++].form = abbrev_form; | |
c906108c SS |
13179 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
13180 | abbrev_ptr += bytes_read; | |
13181 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
13182 | abbrev_ptr += bytes_read; | |
13183 | } | |
13184 | ||
433df2d4 | 13185 | cur_abbrev->attrs = obstack_alloc (&abbrev_table->abbrev_obstack, |
f3dd6933 DJ |
13186 | (cur_abbrev->num_attrs |
13187 | * sizeof (struct attr_abbrev))); | |
13188 | memcpy (cur_abbrev->attrs, cur_attrs, | |
13189 | cur_abbrev->num_attrs * sizeof (struct attr_abbrev)); | |
13190 | ||
433df2d4 | 13191 | abbrev_table_add_abbrev (abbrev_table, abbrev_number, cur_abbrev); |
c906108c SS |
13192 | |
13193 | /* Get next abbreviation. | |
13194 | Under Irix6 the abbreviations for a compilation unit are not | |
c5aa993b JM |
13195 | always properly terminated with an abbrev number of 0. |
13196 | Exit loop if we encounter an abbreviation which we have | |
13197 | already read (which means we are about to read the abbreviations | |
13198 | for the next compile unit) or if the end of the abbreviation | |
13199 | table is reached. */ | |
433df2d4 | 13200 | if ((unsigned int) (abbrev_ptr - section->buffer) >= section->size) |
c906108c SS |
13201 | break; |
13202 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
13203 | abbrev_ptr += bytes_read; | |
433df2d4 | 13204 | if (abbrev_table_lookup_abbrev (abbrev_table, abbrev_number) != NULL) |
c906108c SS |
13205 | break; |
13206 | } | |
f3dd6933 DJ |
13207 | |
13208 | xfree (cur_attrs); | |
433df2d4 | 13209 | return abbrev_table; |
c906108c SS |
13210 | } |
13211 | ||
433df2d4 | 13212 | /* Free the resources held by ABBREV_TABLE. */ |
c906108c | 13213 | |
c906108c | 13214 | static void |
433df2d4 | 13215 | abbrev_table_free (struct abbrev_table *abbrev_table) |
c906108c | 13216 | { |
433df2d4 DE |
13217 | obstack_free (&abbrev_table->abbrev_obstack, NULL); |
13218 | xfree (abbrev_table); | |
c906108c SS |
13219 | } |
13220 | ||
f4dc4d17 DE |
13221 | /* Same as abbrev_table_free but as a cleanup. |
13222 | We pass in a pointer to the pointer to the table so that we can | |
13223 | set the pointer to NULL when we're done. It also simplifies | |
13224 | build_type_unit_groups. */ | |
13225 | ||
13226 | static void | |
13227 | abbrev_table_free_cleanup (void *table_ptr) | |
13228 | { | |
13229 | struct abbrev_table **abbrev_table_ptr = table_ptr; | |
13230 | ||
13231 | if (*abbrev_table_ptr != NULL) | |
13232 | abbrev_table_free (*abbrev_table_ptr); | |
13233 | *abbrev_table_ptr = NULL; | |
13234 | } | |
13235 | ||
433df2d4 DE |
13236 | /* Read the abbrev table for CU from ABBREV_SECTION. */ |
13237 | ||
13238 | static void | |
13239 | dwarf2_read_abbrevs (struct dwarf2_cu *cu, | |
13240 | struct dwarf2_section_info *abbrev_section) | |
c906108c | 13241 | { |
433df2d4 DE |
13242 | cu->abbrev_table = |
13243 | abbrev_table_read_table (abbrev_section, cu->header.abbrev_offset); | |
13244 | } | |
c906108c | 13245 | |
433df2d4 | 13246 | /* Release the memory used by the abbrev table for a compilation unit. */ |
c906108c | 13247 | |
433df2d4 DE |
13248 | static void |
13249 | dwarf2_free_abbrev_table (void *ptr_to_cu) | |
13250 | { | |
13251 | struct dwarf2_cu *cu = ptr_to_cu; | |
c906108c | 13252 | |
433df2d4 DE |
13253 | abbrev_table_free (cu->abbrev_table); |
13254 | /* Set this to NULL so that we SEGV if we try to read it later, | |
13255 | and also because free_comp_unit verifies this is NULL. */ | |
13256 | cu->abbrev_table = NULL; | |
13257 | } | |
13258 | \f | |
72bf9492 DJ |
13259 | /* Returns nonzero if TAG represents a type that we might generate a partial |
13260 | symbol for. */ | |
13261 | ||
13262 | static int | |
13263 | is_type_tag_for_partial (int tag) | |
13264 | { | |
13265 | switch (tag) | |
13266 | { | |
13267 | #if 0 | |
13268 | /* Some types that would be reasonable to generate partial symbols for, | |
13269 | that we don't at present. */ | |
13270 | case DW_TAG_array_type: | |
13271 | case DW_TAG_file_type: | |
13272 | case DW_TAG_ptr_to_member_type: | |
13273 | case DW_TAG_set_type: | |
13274 | case DW_TAG_string_type: | |
13275 | case DW_TAG_subroutine_type: | |
13276 | #endif | |
13277 | case DW_TAG_base_type: | |
13278 | case DW_TAG_class_type: | |
680b30c7 | 13279 | case DW_TAG_interface_type: |
72bf9492 DJ |
13280 | case DW_TAG_enumeration_type: |
13281 | case DW_TAG_structure_type: | |
13282 | case DW_TAG_subrange_type: | |
13283 | case DW_TAG_typedef: | |
13284 | case DW_TAG_union_type: | |
13285 | return 1; | |
13286 | default: | |
13287 | return 0; | |
13288 | } | |
13289 | } | |
13290 | ||
13291 | /* Load all DIEs that are interesting for partial symbols into memory. */ | |
13292 | ||
13293 | static struct partial_die_info * | |
dee91e82 DE |
13294 | load_partial_dies (const struct die_reader_specs *reader, |
13295 | gdb_byte *info_ptr, int building_psymtab) | |
72bf9492 | 13296 | { |
dee91e82 | 13297 | struct dwarf2_cu *cu = reader->cu; |
bb5ed363 | 13298 | struct objfile *objfile = cu->objfile; |
72bf9492 DJ |
13299 | struct partial_die_info *part_die; |
13300 | struct partial_die_info *parent_die, *last_die, *first_die = NULL; | |
13301 | struct abbrev_info *abbrev; | |
13302 | unsigned int bytes_read; | |
5afb4e99 | 13303 | unsigned int load_all = 0; |
72bf9492 DJ |
13304 | int nesting_level = 1; |
13305 | ||
13306 | parent_die = NULL; | |
13307 | last_die = NULL; | |
13308 | ||
7adf1e79 DE |
13309 | gdb_assert (cu->per_cu != NULL); |
13310 | if (cu->per_cu->load_all_dies) | |
5afb4e99 DJ |
13311 | load_all = 1; |
13312 | ||
72bf9492 DJ |
13313 | cu->partial_dies |
13314 | = htab_create_alloc_ex (cu->header.length / 12, | |
13315 | partial_die_hash, | |
13316 | partial_die_eq, | |
13317 | NULL, | |
13318 | &cu->comp_unit_obstack, | |
13319 | hashtab_obstack_allocate, | |
13320 | dummy_obstack_deallocate); | |
13321 | ||
13322 | part_die = obstack_alloc (&cu->comp_unit_obstack, | |
13323 | sizeof (struct partial_die_info)); | |
13324 | ||
13325 | while (1) | |
13326 | { | |
13327 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, cu); | |
13328 | ||
13329 | /* A NULL abbrev means the end of a series of children. */ | |
13330 | if (abbrev == NULL) | |
13331 | { | |
13332 | if (--nesting_level == 0) | |
13333 | { | |
13334 | /* PART_DIE was probably the last thing allocated on the | |
13335 | comp_unit_obstack, so we could call obstack_free | |
13336 | here. We don't do that because the waste is small, | |
13337 | and will be cleaned up when we're done with this | |
13338 | compilation unit. This way, we're also more robust | |
13339 | against other users of the comp_unit_obstack. */ | |
13340 | return first_die; | |
13341 | } | |
13342 | info_ptr += bytes_read; | |
13343 | last_die = parent_die; | |
13344 | parent_die = parent_die->die_parent; | |
13345 | continue; | |
13346 | } | |
13347 | ||
98bfdba5 PA |
13348 | /* Check for template arguments. We never save these; if |
13349 | they're seen, we just mark the parent, and go on our way. */ | |
13350 | if (parent_die != NULL | |
13351 | && cu->language == language_cplus | |
13352 | && (abbrev->tag == DW_TAG_template_type_param | |
13353 | || abbrev->tag == DW_TAG_template_value_param)) | |
13354 | { | |
13355 | parent_die->has_template_arguments = 1; | |
13356 | ||
13357 | if (!load_all) | |
13358 | { | |
13359 | /* We don't need a partial DIE for the template argument. */ | |
dee91e82 | 13360 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
13361 | continue; |
13362 | } | |
13363 | } | |
13364 | ||
0d99eb77 | 13365 | /* We only recurse into c++ subprograms looking for template arguments. |
98bfdba5 PA |
13366 | Skip their other children. */ |
13367 | if (!load_all | |
13368 | && cu->language == language_cplus | |
13369 | && parent_die != NULL | |
13370 | && parent_die->tag == DW_TAG_subprogram) | |
13371 | { | |
dee91e82 | 13372 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
13373 | continue; |
13374 | } | |
13375 | ||
5afb4e99 DJ |
13376 | /* Check whether this DIE is interesting enough to save. Normally |
13377 | we would not be interested in members here, but there may be | |
13378 | later variables referencing them via DW_AT_specification (for | |
13379 | static members). */ | |
13380 | if (!load_all | |
13381 | && !is_type_tag_for_partial (abbrev->tag) | |
72929c62 | 13382 | && abbrev->tag != DW_TAG_constant |
72bf9492 DJ |
13383 | && abbrev->tag != DW_TAG_enumerator |
13384 | && abbrev->tag != DW_TAG_subprogram | |
bc30ff58 | 13385 | && abbrev->tag != DW_TAG_lexical_block |
72bf9492 | 13386 | && abbrev->tag != DW_TAG_variable |
5afb4e99 | 13387 | && abbrev->tag != DW_TAG_namespace |
f55ee35c | 13388 | && abbrev->tag != DW_TAG_module |
95554aad TT |
13389 | && abbrev->tag != DW_TAG_member |
13390 | && abbrev->tag != DW_TAG_imported_unit) | |
72bf9492 DJ |
13391 | { |
13392 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 13393 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
72bf9492 DJ |
13394 | continue; |
13395 | } | |
13396 | ||
dee91e82 DE |
13397 | info_ptr = read_partial_die (reader, part_die, abbrev, bytes_read, |
13398 | info_ptr); | |
72bf9492 DJ |
13399 | |
13400 | /* This two-pass algorithm for processing partial symbols has a | |
13401 | high cost in cache pressure. Thus, handle some simple cases | |
13402 | here which cover the majority of C partial symbols. DIEs | |
13403 | which neither have specification tags in them, nor could have | |
13404 | specification tags elsewhere pointing at them, can simply be | |
13405 | processed and discarded. | |
13406 | ||
13407 | This segment is also optional; scan_partial_symbols and | |
13408 | add_partial_symbol will handle these DIEs if we chain | |
13409 | them in normally. When compilers which do not emit large | |
13410 | quantities of duplicate debug information are more common, | |
13411 | this code can probably be removed. */ | |
13412 | ||
13413 | /* Any complete simple types at the top level (pretty much all | |
13414 | of them, for a language without namespaces), can be processed | |
13415 | directly. */ | |
13416 | if (parent_die == NULL | |
13417 | && part_die->has_specification == 0 | |
13418 | && part_die->is_declaration == 0 | |
d8228535 | 13419 | && ((part_die->tag == DW_TAG_typedef && !part_die->has_children) |
72bf9492 DJ |
13420 | || part_die->tag == DW_TAG_base_type |
13421 | || part_die->tag == DW_TAG_subrange_type)) | |
13422 | { | |
13423 | if (building_psymtab && part_die->name != NULL) | |
04a679b8 | 13424 | add_psymbol_to_list (part_die->name, strlen (part_die->name), 0, |
72bf9492 | 13425 | VAR_DOMAIN, LOC_TYPEDEF, |
bb5ed363 DE |
13426 | &objfile->static_psymbols, |
13427 | 0, (CORE_ADDR) 0, cu->language, objfile); | |
dee91e82 | 13428 | info_ptr = locate_pdi_sibling (reader, part_die, info_ptr); |
72bf9492 DJ |
13429 | continue; |
13430 | } | |
13431 | ||
d8228535 JK |
13432 | /* The exception for DW_TAG_typedef with has_children above is |
13433 | a workaround of GCC PR debug/47510. In the case of this complaint | |
13434 | type_name_no_tag_or_error will error on such types later. | |
13435 | ||
13436 | GDB skipped children of DW_TAG_typedef by the shortcut above and then | |
13437 | it could not find the child DIEs referenced later, this is checked | |
13438 | above. In correct DWARF DW_TAG_typedef should have no children. */ | |
13439 | ||
13440 | if (part_die->tag == DW_TAG_typedef && part_die->has_children) | |
13441 | complaint (&symfile_complaints, | |
13442 | _("DW_TAG_typedef has childen - GCC PR debug/47510 bug " | |
13443 | "- DIE at 0x%x [in module %s]"), | |
b64f50a1 | 13444 | part_die->offset.sect_off, objfile->name); |
d8228535 | 13445 | |
72bf9492 DJ |
13446 | /* If we're at the second level, and we're an enumerator, and |
13447 | our parent has no specification (meaning possibly lives in a | |
13448 | namespace elsewhere), then we can add the partial symbol now | |
13449 | instead of queueing it. */ | |
13450 | if (part_die->tag == DW_TAG_enumerator | |
13451 | && parent_die != NULL | |
13452 | && parent_die->die_parent == NULL | |
13453 | && parent_die->tag == DW_TAG_enumeration_type | |
13454 | && parent_die->has_specification == 0) | |
13455 | { | |
13456 | if (part_die->name == NULL) | |
3e43a32a MS |
13457 | complaint (&symfile_complaints, |
13458 | _("malformed enumerator DIE ignored")); | |
72bf9492 | 13459 | else if (building_psymtab) |
04a679b8 | 13460 | add_psymbol_to_list (part_die->name, strlen (part_die->name), 0, |
72bf9492 | 13461 | VAR_DOMAIN, LOC_CONST, |
987504bb JJ |
13462 | (cu->language == language_cplus |
13463 | || cu->language == language_java) | |
bb5ed363 DE |
13464 | ? &objfile->global_psymbols |
13465 | : &objfile->static_psymbols, | |
13466 | 0, (CORE_ADDR) 0, cu->language, objfile); | |
72bf9492 | 13467 | |
dee91e82 | 13468 | info_ptr = locate_pdi_sibling (reader, part_die, info_ptr); |
72bf9492 DJ |
13469 | continue; |
13470 | } | |
13471 | ||
13472 | /* We'll save this DIE so link it in. */ | |
13473 | part_die->die_parent = parent_die; | |
13474 | part_die->die_sibling = NULL; | |
13475 | part_die->die_child = NULL; | |
13476 | ||
13477 | if (last_die && last_die == parent_die) | |
13478 | last_die->die_child = part_die; | |
13479 | else if (last_die) | |
13480 | last_die->die_sibling = part_die; | |
13481 | ||
13482 | last_die = part_die; | |
13483 | ||
13484 | if (first_die == NULL) | |
13485 | first_die = part_die; | |
13486 | ||
13487 | /* Maybe add the DIE to the hash table. Not all DIEs that we | |
13488 | find interesting need to be in the hash table, because we | |
13489 | also have the parent/sibling/child chains; only those that we | |
13490 | might refer to by offset later during partial symbol reading. | |
13491 | ||
13492 | For now this means things that might have be the target of a | |
13493 | DW_AT_specification, DW_AT_abstract_origin, or | |
13494 | DW_AT_extension. DW_AT_extension will refer only to | |
13495 | namespaces; DW_AT_abstract_origin refers to functions (and | |
13496 | many things under the function DIE, but we do not recurse | |
13497 | into function DIEs during partial symbol reading) and | |
13498 | possibly variables as well; DW_AT_specification refers to | |
13499 | declarations. Declarations ought to have the DW_AT_declaration | |
13500 | flag. It happens that GCC forgets to put it in sometimes, but | |
13501 | only for functions, not for types. | |
13502 | ||
13503 | Adding more things than necessary to the hash table is harmless | |
13504 | except for the performance cost. Adding too few will result in | |
5afb4e99 DJ |
13505 | wasted time in find_partial_die, when we reread the compilation |
13506 | unit with load_all_dies set. */ | |
72bf9492 | 13507 | |
5afb4e99 | 13508 | if (load_all |
72929c62 | 13509 | || abbrev->tag == DW_TAG_constant |
5afb4e99 | 13510 | || abbrev->tag == DW_TAG_subprogram |
72bf9492 DJ |
13511 | || abbrev->tag == DW_TAG_variable |
13512 | || abbrev->tag == DW_TAG_namespace | |
13513 | || part_die->is_declaration) | |
13514 | { | |
13515 | void **slot; | |
13516 | ||
13517 | slot = htab_find_slot_with_hash (cu->partial_dies, part_die, | |
b64f50a1 | 13518 | part_die->offset.sect_off, INSERT); |
72bf9492 DJ |
13519 | *slot = part_die; |
13520 | } | |
13521 | ||
13522 | part_die = obstack_alloc (&cu->comp_unit_obstack, | |
13523 | sizeof (struct partial_die_info)); | |
13524 | ||
13525 | /* For some DIEs we want to follow their children (if any). For C | |
bc30ff58 | 13526 | we have no reason to follow the children of structures; for other |
98bfdba5 PA |
13527 | languages we have to, so that we can get at method physnames |
13528 | to infer fully qualified class names, for DW_AT_specification, | |
13529 | and for C++ template arguments. For C++, we also look one level | |
13530 | inside functions to find template arguments (if the name of the | |
13531 | function does not already contain the template arguments). | |
bc30ff58 JB |
13532 | |
13533 | For Ada, we need to scan the children of subprograms and lexical | |
13534 | blocks as well because Ada allows the definition of nested | |
13535 | entities that could be interesting for the debugger, such as | |
13536 | nested subprograms for instance. */ | |
72bf9492 | 13537 | if (last_die->has_children |
5afb4e99 DJ |
13538 | && (load_all |
13539 | || last_die->tag == DW_TAG_namespace | |
f55ee35c | 13540 | || last_die->tag == DW_TAG_module |
72bf9492 | 13541 | || last_die->tag == DW_TAG_enumeration_type |
98bfdba5 PA |
13542 | || (cu->language == language_cplus |
13543 | && last_die->tag == DW_TAG_subprogram | |
13544 | && (last_die->name == NULL | |
13545 | || strchr (last_die->name, '<') == NULL)) | |
72bf9492 DJ |
13546 | || (cu->language != language_c |
13547 | && (last_die->tag == DW_TAG_class_type | |
680b30c7 | 13548 | || last_die->tag == DW_TAG_interface_type |
72bf9492 | 13549 | || last_die->tag == DW_TAG_structure_type |
bc30ff58 JB |
13550 | || last_die->tag == DW_TAG_union_type)) |
13551 | || (cu->language == language_ada | |
13552 | && (last_die->tag == DW_TAG_subprogram | |
13553 | || last_die->tag == DW_TAG_lexical_block)))) | |
72bf9492 DJ |
13554 | { |
13555 | nesting_level++; | |
13556 | parent_die = last_die; | |
13557 | continue; | |
13558 | } | |
13559 | ||
13560 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 13561 | info_ptr = locate_pdi_sibling (reader, last_die, info_ptr); |
72bf9492 DJ |
13562 | |
13563 | /* Back to the top, do it again. */ | |
13564 | } | |
13565 | } | |
13566 | ||
c906108c SS |
13567 | /* Read a minimal amount of information into the minimal die structure. */ |
13568 | ||
fe1b8b76 | 13569 | static gdb_byte * |
dee91e82 DE |
13570 | read_partial_die (const struct die_reader_specs *reader, |
13571 | struct partial_die_info *part_die, | |
13572 | struct abbrev_info *abbrev, unsigned int abbrev_len, | |
13573 | gdb_byte *info_ptr) | |
c906108c | 13574 | { |
dee91e82 | 13575 | struct dwarf2_cu *cu = reader->cu; |
bb5ed363 | 13576 | struct objfile *objfile = cu->objfile; |
dee91e82 | 13577 | gdb_byte *buffer = reader->buffer; |
fa238c03 | 13578 | unsigned int i; |
c906108c | 13579 | struct attribute attr; |
c5aa993b | 13580 | int has_low_pc_attr = 0; |
c906108c | 13581 | int has_high_pc_attr = 0; |
91da1414 | 13582 | int high_pc_relative = 0; |
c906108c | 13583 | |
72bf9492 | 13584 | memset (part_die, 0, sizeof (struct partial_die_info)); |
c906108c | 13585 | |
b64f50a1 | 13586 | part_die->offset.sect_off = info_ptr - buffer; |
72bf9492 DJ |
13587 | |
13588 | info_ptr += abbrev_len; | |
13589 | ||
13590 | if (abbrev == NULL) | |
13591 | return info_ptr; | |
13592 | ||
c906108c SS |
13593 | part_die->tag = abbrev->tag; |
13594 | part_die->has_children = abbrev->has_children; | |
c906108c SS |
13595 | |
13596 | for (i = 0; i < abbrev->num_attrs; ++i) | |
13597 | { | |
dee91e82 | 13598 | info_ptr = read_attribute (reader, &attr, &abbrev->attrs[i], info_ptr); |
c906108c SS |
13599 | |
13600 | /* Store the data if it is of an attribute we want to keep in a | |
c5aa993b | 13601 | partial symbol table. */ |
c906108c SS |
13602 | switch (attr.name) |
13603 | { | |
13604 | case DW_AT_name: | |
71c25dea TT |
13605 | switch (part_die->tag) |
13606 | { | |
13607 | case DW_TAG_compile_unit: | |
95554aad | 13608 | case DW_TAG_partial_unit: |
348e048f | 13609 | case DW_TAG_type_unit: |
71c25dea TT |
13610 | /* Compilation units have a DW_AT_name that is a filename, not |
13611 | a source language identifier. */ | |
13612 | case DW_TAG_enumeration_type: | |
13613 | case DW_TAG_enumerator: | |
13614 | /* These tags always have simple identifiers already; no need | |
13615 | to canonicalize them. */ | |
13616 | part_die->name = DW_STRING (&attr); | |
13617 | break; | |
13618 | default: | |
13619 | part_die->name | |
13620 | = dwarf2_canonicalize_name (DW_STRING (&attr), cu, | |
bb5ed363 | 13621 | &objfile->objfile_obstack); |
71c25dea TT |
13622 | break; |
13623 | } | |
c906108c | 13624 | break; |
31ef98ae | 13625 | case DW_AT_linkage_name: |
c906108c | 13626 | case DW_AT_MIPS_linkage_name: |
31ef98ae TT |
13627 | /* Note that both forms of linkage name might appear. We |
13628 | assume they will be the same, and we only store the last | |
13629 | one we see. */ | |
94af9270 KS |
13630 | if (cu->language == language_ada) |
13631 | part_die->name = DW_STRING (&attr); | |
abc72ce4 | 13632 | part_die->linkage_name = DW_STRING (&attr); |
c906108c SS |
13633 | break; |
13634 | case DW_AT_low_pc: | |
13635 | has_low_pc_attr = 1; | |
13636 | part_die->lowpc = DW_ADDR (&attr); | |
13637 | break; | |
13638 | case DW_AT_high_pc: | |
13639 | has_high_pc_attr = 1; | |
3019eac3 DE |
13640 | if (attr.form == DW_FORM_addr |
13641 | || attr.form == DW_FORM_GNU_addr_index) | |
91da1414 MW |
13642 | part_die->highpc = DW_ADDR (&attr); |
13643 | else | |
13644 | { | |
13645 | high_pc_relative = 1; | |
13646 | part_die->highpc = DW_UNSND (&attr); | |
13647 | } | |
c906108c SS |
13648 | break; |
13649 | case DW_AT_location: | |
0963b4bd | 13650 | /* Support the .debug_loc offsets. */ |
8e19ed76 PS |
13651 | if (attr_form_is_block (&attr)) |
13652 | { | |
95554aad | 13653 | part_die->d.locdesc = DW_BLOCK (&attr); |
8e19ed76 | 13654 | } |
3690dd37 | 13655 | else if (attr_form_is_section_offset (&attr)) |
8e19ed76 | 13656 | { |
4d3c2250 | 13657 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
13658 | } |
13659 | else | |
13660 | { | |
4d3c2250 KB |
13661 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
13662 | "partial symbol information"); | |
8e19ed76 | 13663 | } |
c906108c | 13664 | break; |
c906108c SS |
13665 | case DW_AT_external: |
13666 | part_die->is_external = DW_UNSND (&attr); | |
13667 | break; | |
13668 | case DW_AT_declaration: | |
13669 | part_die->is_declaration = DW_UNSND (&attr); | |
13670 | break; | |
13671 | case DW_AT_type: | |
13672 | part_die->has_type = 1; | |
13673 | break; | |
13674 | case DW_AT_abstract_origin: | |
13675 | case DW_AT_specification: | |
72bf9492 DJ |
13676 | case DW_AT_extension: |
13677 | part_die->has_specification = 1; | |
c764a876 | 13678 | part_die->spec_offset = dwarf2_get_ref_die_offset (&attr); |
36586728 TT |
13679 | part_die->spec_is_dwz = (attr.form == DW_FORM_GNU_ref_alt |
13680 | || cu->per_cu->is_dwz); | |
c906108c SS |
13681 | break; |
13682 | case DW_AT_sibling: | |
13683 | /* Ignore absolute siblings, they might point outside of | |
13684 | the current compile unit. */ | |
13685 | if (attr.form == DW_FORM_ref_addr) | |
3e43a32a MS |
13686 | complaint (&symfile_complaints, |
13687 | _("ignoring absolute DW_AT_sibling")); | |
c906108c | 13688 | else |
b64f50a1 | 13689 | part_die->sibling = buffer + dwarf2_get_ref_die_offset (&attr).sect_off; |
c906108c | 13690 | break; |
fa4028e9 JB |
13691 | case DW_AT_byte_size: |
13692 | part_die->has_byte_size = 1; | |
13693 | break; | |
68511cec CES |
13694 | case DW_AT_calling_convention: |
13695 | /* DWARF doesn't provide a way to identify a program's source-level | |
13696 | entry point. DW_AT_calling_convention attributes are only meant | |
13697 | to describe functions' calling conventions. | |
13698 | ||
13699 | However, because it's a necessary piece of information in | |
13700 | Fortran, and because DW_CC_program is the only piece of debugging | |
13701 | information whose definition refers to a 'main program' at all, | |
13702 | several compilers have begun marking Fortran main programs with | |
13703 | DW_CC_program --- even when those functions use the standard | |
13704 | calling conventions. | |
13705 | ||
13706 | So until DWARF specifies a way to provide this information and | |
13707 | compilers pick up the new representation, we'll support this | |
13708 | practice. */ | |
13709 | if (DW_UNSND (&attr) == DW_CC_program | |
13710 | && cu->language == language_fortran) | |
01f8c46d JK |
13711 | { |
13712 | set_main_name (part_die->name); | |
13713 | ||
13714 | /* As this DIE has a static linkage the name would be difficult | |
13715 | to look up later. */ | |
13716 | language_of_main = language_fortran; | |
13717 | } | |
68511cec | 13718 | break; |
481860b3 GB |
13719 | case DW_AT_inline: |
13720 | if (DW_UNSND (&attr) == DW_INL_inlined | |
13721 | || DW_UNSND (&attr) == DW_INL_declared_inlined) | |
13722 | part_die->may_be_inlined = 1; | |
13723 | break; | |
95554aad TT |
13724 | |
13725 | case DW_AT_import: | |
13726 | if (part_die->tag == DW_TAG_imported_unit) | |
36586728 TT |
13727 | { |
13728 | part_die->d.offset = dwarf2_get_ref_die_offset (&attr); | |
13729 | part_die->is_dwz = (attr.form == DW_FORM_GNU_ref_alt | |
13730 | || cu->per_cu->is_dwz); | |
13731 | } | |
95554aad TT |
13732 | break; |
13733 | ||
c906108c SS |
13734 | default: |
13735 | break; | |
13736 | } | |
13737 | } | |
13738 | ||
91da1414 MW |
13739 | if (high_pc_relative) |
13740 | part_die->highpc += part_die->lowpc; | |
13741 | ||
9373cf26 JK |
13742 | if (has_low_pc_attr && has_high_pc_attr) |
13743 | { | |
13744 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
13745 | eliminate duplicate copies of functions and vtables and such. | |
13746 | The linker will arbitrarily choose one and discard the others. | |
13747 | The AT_*_pc values for such functions refer to local labels in | |
13748 | these sections. If the section from that file was discarded, the | |
13749 | labels are not in the output, so the relocs get a value of 0. | |
13750 | If this is a discarded function, mark the pc bounds as invalid, | |
13751 | so that GDB will ignore it. */ | |
13752 | if (part_die->lowpc == 0 && !dwarf2_per_objfile->has_section_at_zero) | |
13753 | { | |
bb5ed363 | 13754 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9373cf26 JK |
13755 | |
13756 | complaint (&symfile_complaints, | |
13757 | _("DW_AT_low_pc %s is zero " | |
13758 | "for DIE at 0x%x [in module %s]"), | |
13759 | paddress (gdbarch, part_die->lowpc), | |
b64f50a1 | 13760 | part_die->offset.sect_off, objfile->name); |
9373cf26 JK |
13761 | } |
13762 | /* dwarf2_get_pc_bounds has also the strict low < high requirement. */ | |
13763 | else if (part_die->lowpc >= part_die->highpc) | |
13764 | { | |
bb5ed363 | 13765 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9373cf26 JK |
13766 | |
13767 | complaint (&symfile_complaints, | |
13768 | _("DW_AT_low_pc %s is not < DW_AT_high_pc %s " | |
13769 | "for DIE at 0x%x [in module %s]"), | |
13770 | paddress (gdbarch, part_die->lowpc), | |
13771 | paddress (gdbarch, part_die->highpc), | |
b64f50a1 | 13772 | part_die->offset.sect_off, objfile->name); |
9373cf26 JK |
13773 | } |
13774 | else | |
13775 | part_die->has_pc_info = 1; | |
13776 | } | |
85cbf3d3 | 13777 | |
c906108c SS |
13778 | return info_ptr; |
13779 | } | |
13780 | ||
72bf9492 DJ |
13781 | /* Find a cached partial DIE at OFFSET in CU. */ |
13782 | ||
13783 | static struct partial_die_info * | |
b64f50a1 | 13784 | find_partial_die_in_comp_unit (sect_offset offset, struct dwarf2_cu *cu) |
72bf9492 DJ |
13785 | { |
13786 | struct partial_die_info *lookup_die = NULL; | |
13787 | struct partial_die_info part_die; | |
13788 | ||
13789 | part_die.offset = offset; | |
b64f50a1 JK |
13790 | lookup_die = htab_find_with_hash (cu->partial_dies, &part_die, |
13791 | offset.sect_off); | |
72bf9492 | 13792 | |
72bf9492 DJ |
13793 | return lookup_die; |
13794 | } | |
13795 | ||
348e048f DE |
13796 | /* Find a partial DIE at OFFSET, which may or may not be in CU, |
13797 | except in the case of .debug_types DIEs which do not reference | |
13798 | outside their CU (they do however referencing other types via | |
55f1336d | 13799 | DW_FORM_ref_sig8). */ |
72bf9492 DJ |
13800 | |
13801 | static struct partial_die_info * | |
36586728 | 13802 | find_partial_die (sect_offset offset, int offset_in_dwz, struct dwarf2_cu *cu) |
72bf9492 | 13803 | { |
bb5ed363 | 13804 | struct objfile *objfile = cu->objfile; |
5afb4e99 DJ |
13805 | struct dwarf2_per_cu_data *per_cu = NULL; |
13806 | struct partial_die_info *pd = NULL; | |
72bf9492 | 13807 | |
36586728 TT |
13808 | if (offset_in_dwz == cu->per_cu->is_dwz |
13809 | && offset_in_cu_p (&cu->header, offset)) | |
5afb4e99 DJ |
13810 | { |
13811 | pd = find_partial_die_in_comp_unit (offset, cu); | |
13812 | if (pd != NULL) | |
13813 | return pd; | |
0d99eb77 DE |
13814 | /* We missed recording what we needed. |
13815 | Load all dies and try again. */ | |
13816 | per_cu = cu->per_cu; | |
5afb4e99 | 13817 | } |
0d99eb77 DE |
13818 | else |
13819 | { | |
13820 | /* TUs don't reference other CUs/TUs (except via type signatures). */ | |
3019eac3 | 13821 | if (cu->per_cu->is_debug_types) |
0d99eb77 DE |
13822 | { |
13823 | error (_("Dwarf Error: Type Unit at offset 0x%lx contains" | |
13824 | " external reference to offset 0x%lx [in module %s].\n"), | |
13825 | (long) cu->header.offset.sect_off, (long) offset.sect_off, | |
13826 | bfd_get_filename (objfile->obfd)); | |
13827 | } | |
36586728 TT |
13828 | per_cu = dwarf2_find_containing_comp_unit (offset, offset_in_dwz, |
13829 | objfile); | |
72bf9492 | 13830 | |
0d99eb77 DE |
13831 | if (per_cu->cu == NULL || per_cu->cu->partial_dies == NULL) |
13832 | load_partial_comp_unit (per_cu); | |
ae038cb0 | 13833 | |
0d99eb77 DE |
13834 | per_cu->cu->last_used = 0; |
13835 | pd = find_partial_die_in_comp_unit (offset, per_cu->cu); | |
13836 | } | |
5afb4e99 | 13837 | |
dee91e82 DE |
13838 | /* If we didn't find it, and not all dies have been loaded, |
13839 | load them all and try again. */ | |
13840 | ||
5afb4e99 DJ |
13841 | if (pd == NULL && per_cu->load_all_dies == 0) |
13842 | { | |
5afb4e99 | 13843 | per_cu->load_all_dies = 1; |
fd820528 DE |
13844 | |
13845 | /* This is nasty. When we reread the DIEs, somewhere up the call chain | |
13846 | THIS_CU->cu may already be in use. So we can't just free it and | |
13847 | replace its DIEs with the ones we read in. Instead, we leave those | |
13848 | DIEs alone (which can still be in use, e.g. in scan_partial_symbols), | |
13849 | and clobber THIS_CU->cu->partial_dies with the hash table for the new | |
13850 | set. */ | |
dee91e82 | 13851 | load_partial_comp_unit (per_cu); |
5afb4e99 DJ |
13852 | |
13853 | pd = find_partial_die_in_comp_unit (offset, per_cu->cu); | |
13854 | } | |
13855 | ||
13856 | if (pd == NULL) | |
13857 | internal_error (__FILE__, __LINE__, | |
3e43a32a MS |
13858 | _("could not find partial DIE 0x%x " |
13859 | "in cache [from module %s]\n"), | |
b64f50a1 | 13860 | offset.sect_off, bfd_get_filename (objfile->obfd)); |
5afb4e99 | 13861 | return pd; |
72bf9492 DJ |
13862 | } |
13863 | ||
abc72ce4 DE |
13864 | /* See if we can figure out if the class lives in a namespace. We do |
13865 | this by looking for a member function; its demangled name will | |
13866 | contain namespace info, if there is any. */ | |
13867 | ||
13868 | static void | |
13869 | guess_partial_die_structure_name (struct partial_die_info *struct_pdi, | |
13870 | struct dwarf2_cu *cu) | |
13871 | { | |
13872 | /* NOTE: carlton/2003-10-07: Getting the info this way changes | |
13873 | what template types look like, because the demangler | |
13874 | frequently doesn't give the same name as the debug info. We | |
13875 | could fix this by only using the demangled name to get the | |
13876 | prefix (but see comment in read_structure_type). */ | |
13877 | ||
13878 | struct partial_die_info *real_pdi; | |
13879 | struct partial_die_info *child_pdi; | |
13880 | ||
13881 | /* If this DIE (this DIE's specification, if any) has a parent, then | |
13882 | we should not do this. We'll prepend the parent's fully qualified | |
13883 | name when we create the partial symbol. */ | |
13884 | ||
13885 | real_pdi = struct_pdi; | |
13886 | while (real_pdi->has_specification) | |
36586728 TT |
13887 | real_pdi = find_partial_die (real_pdi->spec_offset, |
13888 | real_pdi->spec_is_dwz, cu); | |
abc72ce4 DE |
13889 | |
13890 | if (real_pdi->die_parent != NULL) | |
13891 | return; | |
13892 | ||
13893 | for (child_pdi = struct_pdi->die_child; | |
13894 | child_pdi != NULL; | |
13895 | child_pdi = child_pdi->die_sibling) | |
13896 | { | |
13897 | if (child_pdi->tag == DW_TAG_subprogram | |
13898 | && child_pdi->linkage_name != NULL) | |
13899 | { | |
13900 | char *actual_class_name | |
13901 | = language_class_name_from_physname (cu->language_defn, | |
13902 | child_pdi->linkage_name); | |
13903 | if (actual_class_name != NULL) | |
13904 | { | |
13905 | struct_pdi->name | |
10f0c4bb TT |
13906 | = obstack_copy0 (&cu->objfile->objfile_obstack, |
13907 | actual_class_name, | |
13908 | strlen (actual_class_name)); | |
abc72ce4 DE |
13909 | xfree (actual_class_name); |
13910 | } | |
13911 | break; | |
13912 | } | |
13913 | } | |
13914 | } | |
13915 | ||
72bf9492 DJ |
13916 | /* Adjust PART_DIE before generating a symbol for it. This function |
13917 | may set the is_external flag or change the DIE's name. */ | |
13918 | ||
13919 | static void | |
13920 | fixup_partial_die (struct partial_die_info *part_die, | |
13921 | struct dwarf2_cu *cu) | |
13922 | { | |
abc72ce4 DE |
13923 | /* Once we've fixed up a die, there's no point in doing so again. |
13924 | This also avoids a memory leak if we were to call | |
13925 | guess_partial_die_structure_name multiple times. */ | |
13926 | if (part_die->fixup_called) | |
13927 | return; | |
13928 | ||
72bf9492 DJ |
13929 | /* If we found a reference attribute and the DIE has no name, try |
13930 | to find a name in the referred to DIE. */ | |
13931 | ||
13932 | if (part_die->name == NULL && part_die->has_specification) | |
13933 | { | |
13934 | struct partial_die_info *spec_die; | |
72bf9492 | 13935 | |
36586728 TT |
13936 | spec_die = find_partial_die (part_die->spec_offset, |
13937 | part_die->spec_is_dwz, cu); | |
72bf9492 | 13938 | |
10b3939b | 13939 | fixup_partial_die (spec_die, cu); |
72bf9492 DJ |
13940 | |
13941 | if (spec_die->name) | |
13942 | { | |
13943 | part_die->name = spec_die->name; | |
13944 | ||
13945 | /* Copy DW_AT_external attribute if it is set. */ | |
13946 | if (spec_die->is_external) | |
13947 | part_die->is_external = spec_die->is_external; | |
13948 | } | |
13949 | } | |
13950 | ||
13951 | /* Set default names for some unnamed DIEs. */ | |
72bf9492 DJ |
13952 | |
13953 | if (part_die->name == NULL && part_die->tag == DW_TAG_namespace) | |
2b1dbab0 | 13954 | part_die->name = CP_ANONYMOUS_NAMESPACE_STR; |
72bf9492 | 13955 | |
abc72ce4 DE |
13956 | /* If there is no parent die to provide a namespace, and there are |
13957 | children, see if we can determine the namespace from their linkage | |
122d1940 | 13958 | name. */ |
abc72ce4 | 13959 | if (cu->language == language_cplus |
8b70b953 | 13960 | && !VEC_empty (dwarf2_section_info_def, dwarf2_per_objfile->types) |
abc72ce4 DE |
13961 | && part_die->die_parent == NULL |
13962 | && part_die->has_children | |
13963 | && (part_die->tag == DW_TAG_class_type | |
13964 | || part_die->tag == DW_TAG_structure_type | |
13965 | || part_die->tag == DW_TAG_union_type)) | |
13966 | guess_partial_die_structure_name (part_die, cu); | |
13967 | ||
53832f31 TT |
13968 | /* GCC might emit a nameless struct or union that has a linkage |
13969 | name. See http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
13970 | if (part_die->name == NULL | |
96408a79 SA |
13971 | && (part_die->tag == DW_TAG_class_type |
13972 | || part_die->tag == DW_TAG_interface_type | |
13973 | || part_die->tag == DW_TAG_structure_type | |
13974 | || part_die->tag == DW_TAG_union_type) | |
53832f31 TT |
13975 | && part_die->linkage_name != NULL) |
13976 | { | |
13977 | char *demangled; | |
13978 | ||
13979 | demangled = cplus_demangle (part_die->linkage_name, DMGL_TYPES); | |
13980 | if (demangled) | |
13981 | { | |
96408a79 SA |
13982 | const char *base; |
13983 | ||
13984 | /* Strip any leading namespaces/classes, keep only the base name. | |
13985 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
13986 | base = strrchr (demangled, ':'); | |
13987 | if (base && base > demangled && base[-1] == ':') | |
13988 | base++; | |
13989 | else | |
13990 | base = demangled; | |
13991 | ||
10f0c4bb TT |
13992 | part_die->name = obstack_copy0 (&cu->objfile->objfile_obstack, |
13993 | base, strlen (base)); | |
53832f31 TT |
13994 | xfree (demangled); |
13995 | } | |
13996 | } | |
13997 | ||
abc72ce4 | 13998 | part_die->fixup_called = 1; |
72bf9492 DJ |
13999 | } |
14000 | ||
a8329558 | 14001 | /* Read an attribute value described by an attribute form. */ |
c906108c | 14002 | |
fe1b8b76 | 14003 | static gdb_byte * |
dee91e82 DE |
14004 | read_attribute_value (const struct die_reader_specs *reader, |
14005 | struct attribute *attr, unsigned form, | |
14006 | gdb_byte *info_ptr) | |
c906108c | 14007 | { |
dee91e82 DE |
14008 | struct dwarf2_cu *cu = reader->cu; |
14009 | bfd *abfd = reader->abfd; | |
e7c27a73 | 14010 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
14011 | unsigned int bytes_read; |
14012 | struct dwarf_block *blk; | |
14013 | ||
a8329558 KW |
14014 | attr->form = form; |
14015 | switch (form) | |
c906108c | 14016 | { |
c906108c | 14017 | case DW_FORM_ref_addr: |
ae411497 | 14018 | if (cu->header.version == 2) |
4568ecf9 | 14019 | DW_UNSND (attr) = read_address (abfd, info_ptr, cu, &bytes_read); |
ae411497 | 14020 | else |
4568ecf9 DE |
14021 | DW_UNSND (attr) = read_offset (abfd, info_ptr, |
14022 | &cu->header, &bytes_read); | |
ae411497 TT |
14023 | info_ptr += bytes_read; |
14024 | break; | |
36586728 TT |
14025 | case DW_FORM_GNU_ref_alt: |
14026 | DW_UNSND (attr) = read_offset (abfd, info_ptr, &cu->header, &bytes_read); | |
14027 | info_ptr += bytes_read; | |
14028 | break; | |
ae411497 | 14029 | case DW_FORM_addr: |
e7c27a73 | 14030 | DW_ADDR (attr) = read_address (abfd, info_ptr, cu, &bytes_read); |
107d2387 | 14031 | info_ptr += bytes_read; |
c906108c SS |
14032 | break; |
14033 | case DW_FORM_block2: | |
7b5a2f43 | 14034 | blk = dwarf_alloc_block (cu); |
c906108c SS |
14035 | blk->size = read_2_bytes (abfd, info_ptr); |
14036 | info_ptr += 2; | |
14037 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
14038 | info_ptr += blk->size; | |
14039 | DW_BLOCK (attr) = blk; | |
14040 | break; | |
14041 | case DW_FORM_block4: | |
7b5a2f43 | 14042 | blk = dwarf_alloc_block (cu); |
c906108c SS |
14043 | blk->size = read_4_bytes (abfd, info_ptr); |
14044 | info_ptr += 4; | |
14045 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
14046 | info_ptr += blk->size; | |
14047 | DW_BLOCK (attr) = blk; | |
14048 | break; | |
14049 | case DW_FORM_data2: | |
14050 | DW_UNSND (attr) = read_2_bytes (abfd, info_ptr); | |
14051 | info_ptr += 2; | |
14052 | break; | |
14053 | case DW_FORM_data4: | |
14054 | DW_UNSND (attr) = read_4_bytes (abfd, info_ptr); | |
14055 | info_ptr += 4; | |
14056 | break; | |
14057 | case DW_FORM_data8: | |
14058 | DW_UNSND (attr) = read_8_bytes (abfd, info_ptr); | |
14059 | info_ptr += 8; | |
14060 | break; | |
2dc7f7b3 TT |
14061 | case DW_FORM_sec_offset: |
14062 | DW_UNSND (attr) = read_offset (abfd, info_ptr, &cu->header, &bytes_read); | |
14063 | info_ptr += bytes_read; | |
14064 | break; | |
c906108c | 14065 | case DW_FORM_string: |
9b1c24c8 | 14066 | DW_STRING (attr) = read_direct_string (abfd, info_ptr, &bytes_read); |
8285870a | 14067 | DW_STRING_IS_CANONICAL (attr) = 0; |
c906108c SS |
14068 | info_ptr += bytes_read; |
14069 | break; | |
4bdf3d34 | 14070 | case DW_FORM_strp: |
36586728 TT |
14071 | if (!cu->per_cu->is_dwz) |
14072 | { | |
14073 | DW_STRING (attr) = read_indirect_string (abfd, info_ptr, cu_header, | |
14074 | &bytes_read); | |
14075 | DW_STRING_IS_CANONICAL (attr) = 0; | |
14076 | info_ptr += bytes_read; | |
14077 | break; | |
14078 | } | |
14079 | /* FALLTHROUGH */ | |
14080 | case DW_FORM_GNU_strp_alt: | |
14081 | { | |
14082 | struct dwz_file *dwz = dwarf2_get_dwz_file (); | |
14083 | LONGEST str_offset = read_offset (abfd, info_ptr, cu_header, | |
14084 | &bytes_read); | |
14085 | ||
14086 | DW_STRING (attr) = read_indirect_string_from_dwz (dwz, str_offset); | |
14087 | DW_STRING_IS_CANONICAL (attr) = 0; | |
14088 | info_ptr += bytes_read; | |
14089 | } | |
4bdf3d34 | 14090 | break; |
2dc7f7b3 | 14091 | case DW_FORM_exprloc: |
c906108c | 14092 | case DW_FORM_block: |
7b5a2f43 | 14093 | blk = dwarf_alloc_block (cu); |
c906108c SS |
14094 | blk->size = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
14095 | info_ptr += bytes_read; | |
14096 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
14097 | info_ptr += blk->size; | |
14098 | DW_BLOCK (attr) = blk; | |
14099 | break; | |
14100 | case DW_FORM_block1: | |
7b5a2f43 | 14101 | blk = dwarf_alloc_block (cu); |
c906108c SS |
14102 | blk->size = read_1_byte (abfd, info_ptr); |
14103 | info_ptr += 1; | |
14104 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
14105 | info_ptr += blk->size; | |
14106 | DW_BLOCK (attr) = blk; | |
14107 | break; | |
14108 | case DW_FORM_data1: | |
14109 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
14110 | info_ptr += 1; | |
14111 | break; | |
14112 | case DW_FORM_flag: | |
14113 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
14114 | info_ptr += 1; | |
14115 | break; | |
2dc7f7b3 TT |
14116 | case DW_FORM_flag_present: |
14117 | DW_UNSND (attr) = 1; | |
14118 | break; | |
c906108c SS |
14119 | case DW_FORM_sdata: |
14120 | DW_SND (attr) = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
14121 | info_ptr += bytes_read; | |
14122 | break; | |
14123 | case DW_FORM_udata: | |
14124 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
14125 | info_ptr += bytes_read; | |
14126 | break; | |
14127 | case DW_FORM_ref1: | |
4568ecf9 DE |
14128 | DW_UNSND (attr) = (cu->header.offset.sect_off |
14129 | + read_1_byte (abfd, info_ptr)); | |
c906108c SS |
14130 | info_ptr += 1; |
14131 | break; | |
14132 | case DW_FORM_ref2: | |
4568ecf9 DE |
14133 | DW_UNSND (attr) = (cu->header.offset.sect_off |
14134 | + read_2_bytes (abfd, info_ptr)); | |
c906108c SS |
14135 | info_ptr += 2; |
14136 | break; | |
14137 | case DW_FORM_ref4: | |
4568ecf9 DE |
14138 | DW_UNSND (attr) = (cu->header.offset.sect_off |
14139 | + read_4_bytes (abfd, info_ptr)); | |
c906108c SS |
14140 | info_ptr += 4; |
14141 | break; | |
613e1657 | 14142 | case DW_FORM_ref8: |
4568ecf9 DE |
14143 | DW_UNSND (attr) = (cu->header.offset.sect_off |
14144 | + read_8_bytes (abfd, info_ptr)); | |
613e1657 KB |
14145 | info_ptr += 8; |
14146 | break; | |
55f1336d | 14147 | case DW_FORM_ref_sig8: |
348e048f DE |
14148 | /* Convert the signature to something we can record in DW_UNSND |
14149 | for later lookup. | |
14150 | NOTE: This is NULL if the type wasn't found. */ | |
14151 | DW_SIGNATURED_TYPE (attr) = | |
e319fa28 | 14152 | lookup_signatured_type (read_8_bytes (abfd, info_ptr)); |
348e048f DE |
14153 | info_ptr += 8; |
14154 | break; | |
c906108c | 14155 | case DW_FORM_ref_udata: |
4568ecf9 DE |
14156 | DW_UNSND (attr) = (cu->header.offset.sect_off |
14157 | + read_unsigned_leb128 (abfd, info_ptr, &bytes_read)); | |
c906108c SS |
14158 | info_ptr += bytes_read; |
14159 | break; | |
c906108c | 14160 | case DW_FORM_indirect: |
a8329558 KW |
14161 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
14162 | info_ptr += bytes_read; | |
dee91e82 | 14163 | info_ptr = read_attribute_value (reader, attr, form, info_ptr); |
a8329558 | 14164 | break; |
3019eac3 DE |
14165 | case DW_FORM_GNU_addr_index: |
14166 | if (reader->dwo_file == NULL) | |
14167 | { | |
14168 | /* For now flag a hard error. | |
14169 | Later we can turn this into a complaint. */ | |
14170 | error (_("Dwarf Error: %s found in non-DWO CU [in module %s]"), | |
14171 | dwarf_form_name (form), | |
14172 | bfd_get_filename (abfd)); | |
14173 | } | |
14174 | DW_ADDR (attr) = read_addr_index_from_leb128 (cu, info_ptr, &bytes_read); | |
14175 | info_ptr += bytes_read; | |
14176 | break; | |
14177 | case DW_FORM_GNU_str_index: | |
14178 | if (reader->dwo_file == NULL) | |
14179 | { | |
14180 | /* For now flag a hard error. | |
14181 | Later we can turn this into a complaint if warranted. */ | |
14182 | error (_("Dwarf Error: %s found in non-DWO CU [in module %s]"), | |
14183 | dwarf_form_name (form), | |
14184 | bfd_get_filename (abfd)); | |
14185 | } | |
14186 | { | |
14187 | ULONGEST str_index = | |
14188 | read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
14189 | ||
14190 | DW_STRING (attr) = read_str_index (reader, cu, str_index); | |
14191 | DW_STRING_IS_CANONICAL (attr) = 0; | |
14192 | info_ptr += bytes_read; | |
14193 | } | |
14194 | break; | |
c906108c | 14195 | default: |
8a3fe4f8 | 14196 | error (_("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]"), |
659b0389 ML |
14197 | dwarf_form_name (form), |
14198 | bfd_get_filename (abfd)); | |
c906108c | 14199 | } |
28e94949 | 14200 | |
36586728 TT |
14201 | /* Super hack. */ |
14202 | if (cu->per_cu->is_dwz && is_ref_attr (attr)) | |
14203 | attr->form = DW_FORM_GNU_ref_alt; | |
14204 | ||
28e94949 JB |
14205 | /* We have seen instances where the compiler tried to emit a byte |
14206 | size attribute of -1 which ended up being encoded as an unsigned | |
14207 | 0xffffffff. Although 0xffffffff is technically a valid size value, | |
14208 | an object of this size seems pretty unlikely so we can relatively | |
14209 | safely treat these cases as if the size attribute was invalid and | |
14210 | treat them as zero by default. */ | |
14211 | if (attr->name == DW_AT_byte_size | |
14212 | && form == DW_FORM_data4 | |
14213 | && DW_UNSND (attr) >= 0xffffffff) | |
01c66ae6 JB |
14214 | { |
14215 | complaint | |
14216 | (&symfile_complaints, | |
43bbcdc2 PH |
14217 | _("Suspicious DW_AT_byte_size value treated as zero instead of %s"), |
14218 | hex_string (DW_UNSND (attr))); | |
01c66ae6 JB |
14219 | DW_UNSND (attr) = 0; |
14220 | } | |
28e94949 | 14221 | |
c906108c SS |
14222 | return info_ptr; |
14223 | } | |
14224 | ||
a8329558 KW |
14225 | /* Read an attribute described by an abbreviated attribute. */ |
14226 | ||
fe1b8b76 | 14227 | static gdb_byte * |
dee91e82 DE |
14228 | read_attribute (const struct die_reader_specs *reader, |
14229 | struct attribute *attr, struct attr_abbrev *abbrev, | |
14230 | gdb_byte *info_ptr) | |
a8329558 KW |
14231 | { |
14232 | attr->name = abbrev->name; | |
dee91e82 | 14233 | return read_attribute_value (reader, attr, abbrev->form, info_ptr); |
a8329558 KW |
14234 | } |
14235 | ||
0963b4bd | 14236 | /* Read dwarf information from a buffer. */ |
c906108c SS |
14237 | |
14238 | static unsigned int | |
a1855c1d | 14239 | read_1_byte (bfd *abfd, const gdb_byte *buf) |
c906108c | 14240 | { |
fe1b8b76 | 14241 | return bfd_get_8 (abfd, buf); |
c906108c SS |
14242 | } |
14243 | ||
14244 | static int | |
a1855c1d | 14245 | read_1_signed_byte (bfd *abfd, const gdb_byte *buf) |
c906108c | 14246 | { |
fe1b8b76 | 14247 | return bfd_get_signed_8 (abfd, buf); |
c906108c SS |
14248 | } |
14249 | ||
14250 | static unsigned int | |
a1855c1d | 14251 | read_2_bytes (bfd *abfd, const gdb_byte *buf) |
c906108c | 14252 | { |
fe1b8b76 | 14253 | return bfd_get_16 (abfd, buf); |
c906108c SS |
14254 | } |
14255 | ||
21ae7a4d | 14256 | static int |
a1855c1d | 14257 | read_2_signed_bytes (bfd *abfd, const gdb_byte *buf) |
21ae7a4d JK |
14258 | { |
14259 | return bfd_get_signed_16 (abfd, buf); | |
14260 | } | |
14261 | ||
c906108c | 14262 | static unsigned int |
a1855c1d | 14263 | read_4_bytes (bfd *abfd, const gdb_byte *buf) |
c906108c | 14264 | { |
fe1b8b76 | 14265 | return bfd_get_32 (abfd, buf); |
c906108c SS |
14266 | } |
14267 | ||
21ae7a4d | 14268 | static int |
a1855c1d | 14269 | read_4_signed_bytes (bfd *abfd, const gdb_byte *buf) |
21ae7a4d JK |
14270 | { |
14271 | return bfd_get_signed_32 (abfd, buf); | |
14272 | } | |
14273 | ||
93311388 | 14274 | static ULONGEST |
a1855c1d | 14275 | read_8_bytes (bfd *abfd, const gdb_byte *buf) |
c906108c | 14276 | { |
fe1b8b76 | 14277 | return bfd_get_64 (abfd, buf); |
c906108c SS |
14278 | } |
14279 | ||
14280 | static CORE_ADDR | |
fe1b8b76 | 14281 | read_address (bfd *abfd, gdb_byte *buf, struct dwarf2_cu *cu, |
891d2f0b | 14282 | unsigned int *bytes_read) |
c906108c | 14283 | { |
e7c27a73 | 14284 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
14285 | CORE_ADDR retval = 0; |
14286 | ||
107d2387 | 14287 | if (cu_header->signed_addr_p) |
c906108c | 14288 | { |
107d2387 AC |
14289 | switch (cu_header->addr_size) |
14290 | { | |
14291 | case 2: | |
fe1b8b76 | 14292 | retval = bfd_get_signed_16 (abfd, buf); |
107d2387 AC |
14293 | break; |
14294 | case 4: | |
fe1b8b76 | 14295 | retval = bfd_get_signed_32 (abfd, buf); |
107d2387 AC |
14296 | break; |
14297 | case 8: | |
fe1b8b76 | 14298 | retval = bfd_get_signed_64 (abfd, buf); |
107d2387 AC |
14299 | break; |
14300 | default: | |
8e65ff28 | 14301 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 14302 | _("read_address: bad switch, signed [in module %s]"), |
659b0389 | 14303 | bfd_get_filename (abfd)); |
107d2387 AC |
14304 | } |
14305 | } | |
14306 | else | |
14307 | { | |
14308 | switch (cu_header->addr_size) | |
14309 | { | |
14310 | case 2: | |
fe1b8b76 | 14311 | retval = bfd_get_16 (abfd, buf); |
107d2387 AC |
14312 | break; |
14313 | case 4: | |
fe1b8b76 | 14314 | retval = bfd_get_32 (abfd, buf); |
107d2387 AC |
14315 | break; |
14316 | case 8: | |
fe1b8b76 | 14317 | retval = bfd_get_64 (abfd, buf); |
107d2387 AC |
14318 | break; |
14319 | default: | |
8e65ff28 | 14320 | internal_error (__FILE__, __LINE__, |
a73c6dcd MS |
14321 | _("read_address: bad switch, " |
14322 | "unsigned [in module %s]"), | |
659b0389 | 14323 | bfd_get_filename (abfd)); |
107d2387 | 14324 | } |
c906108c | 14325 | } |
64367e0a | 14326 | |
107d2387 AC |
14327 | *bytes_read = cu_header->addr_size; |
14328 | return retval; | |
c906108c SS |
14329 | } |
14330 | ||
f7ef9339 | 14331 | /* Read the initial length from a section. The (draft) DWARF 3 |
613e1657 KB |
14332 | specification allows the initial length to take up either 4 bytes |
14333 | or 12 bytes. If the first 4 bytes are 0xffffffff, then the next 8 | |
14334 | bytes describe the length and all offsets will be 8 bytes in length | |
14335 | instead of 4. | |
14336 | ||
f7ef9339 KB |
14337 | An older, non-standard 64-bit format is also handled by this |
14338 | function. The older format in question stores the initial length | |
14339 | as an 8-byte quantity without an escape value. Lengths greater | |
14340 | than 2^32 aren't very common which means that the initial 4 bytes | |
14341 | is almost always zero. Since a length value of zero doesn't make | |
14342 | sense for the 32-bit format, this initial zero can be considered to | |
14343 | be an escape value which indicates the presence of the older 64-bit | |
14344 | format. As written, the code can't detect (old format) lengths | |
917c78fc MK |
14345 | greater than 4GB. If it becomes necessary to handle lengths |
14346 | somewhat larger than 4GB, we could allow other small values (such | |
14347 | as the non-sensical values of 1, 2, and 3) to also be used as | |
14348 | escape values indicating the presence of the old format. | |
f7ef9339 | 14349 | |
917c78fc MK |
14350 | The value returned via bytes_read should be used to increment the |
14351 | relevant pointer after calling read_initial_length(). | |
c764a876 | 14352 | |
613e1657 KB |
14353 | [ Note: read_initial_length() and read_offset() are based on the |
14354 | document entitled "DWARF Debugging Information Format", revision | |
f7ef9339 | 14355 | 3, draft 8, dated November 19, 2001. This document was obtained |
613e1657 KB |
14356 | from: |
14357 | ||
f7ef9339 | 14358 | http://reality.sgiweb.org/davea/dwarf3-draft8-011125.pdf |
6e70227d | 14359 | |
613e1657 KB |
14360 | This document is only a draft and is subject to change. (So beware.) |
14361 | ||
f7ef9339 | 14362 | Details regarding the older, non-standard 64-bit format were |
917c78fc MK |
14363 | determined empirically by examining 64-bit ELF files produced by |
14364 | the SGI toolchain on an IRIX 6.5 machine. | |
f7ef9339 KB |
14365 | |
14366 | - Kevin, July 16, 2002 | |
613e1657 KB |
14367 | ] */ |
14368 | ||
14369 | static LONGEST | |
c764a876 | 14370 | read_initial_length (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read) |
613e1657 | 14371 | { |
fe1b8b76 | 14372 | LONGEST length = bfd_get_32 (abfd, buf); |
613e1657 | 14373 | |
dd373385 | 14374 | if (length == 0xffffffff) |
613e1657 | 14375 | { |
fe1b8b76 | 14376 | length = bfd_get_64 (abfd, buf + 4); |
613e1657 | 14377 | *bytes_read = 12; |
613e1657 | 14378 | } |
dd373385 | 14379 | else if (length == 0) |
f7ef9339 | 14380 | { |
dd373385 | 14381 | /* Handle the (non-standard) 64-bit DWARF2 format used by IRIX. */ |
fe1b8b76 | 14382 | length = bfd_get_64 (abfd, buf); |
f7ef9339 | 14383 | *bytes_read = 8; |
f7ef9339 | 14384 | } |
613e1657 KB |
14385 | else |
14386 | { | |
14387 | *bytes_read = 4; | |
613e1657 KB |
14388 | } |
14389 | ||
c764a876 DE |
14390 | return length; |
14391 | } | |
dd373385 | 14392 | |
c764a876 DE |
14393 | /* Cover function for read_initial_length. |
14394 | Returns the length of the object at BUF, and stores the size of the | |
14395 | initial length in *BYTES_READ and stores the size that offsets will be in | |
14396 | *OFFSET_SIZE. | |
14397 | If the initial length size is not equivalent to that specified in | |
14398 | CU_HEADER then issue a complaint. | |
14399 | This is useful when reading non-comp-unit headers. */ | |
dd373385 | 14400 | |
c764a876 DE |
14401 | static LONGEST |
14402 | read_checked_initial_length_and_offset (bfd *abfd, gdb_byte *buf, | |
14403 | const struct comp_unit_head *cu_header, | |
14404 | unsigned int *bytes_read, | |
14405 | unsigned int *offset_size) | |
14406 | { | |
14407 | LONGEST length = read_initial_length (abfd, buf, bytes_read); | |
14408 | ||
14409 | gdb_assert (cu_header->initial_length_size == 4 | |
14410 | || cu_header->initial_length_size == 8 | |
14411 | || cu_header->initial_length_size == 12); | |
14412 | ||
14413 | if (cu_header->initial_length_size != *bytes_read) | |
14414 | complaint (&symfile_complaints, | |
14415 | _("intermixed 32-bit and 64-bit DWARF sections")); | |
dd373385 | 14416 | |
c764a876 | 14417 | *offset_size = (*bytes_read == 4) ? 4 : 8; |
dd373385 | 14418 | return length; |
613e1657 KB |
14419 | } |
14420 | ||
14421 | /* Read an offset from the data stream. The size of the offset is | |
917c78fc | 14422 | given by cu_header->offset_size. */ |
613e1657 KB |
14423 | |
14424 | static LONGEST | |
fe1b8b76 | 14425 | read_offset (bfd *abfd, gdb_byte *buf, const struct comp_unit_head *cu_header, |
891d2f0b | 14426 | unsigned int *bytes_read) |
c764a876 DE |
14427 | { |
14428 | LONGEST offset = read_offset_1 (abfd, buf, cu_header->offset_size); | |
9a619af0 | 14429 | |
c764a876 DE |
14430 | *bytes_read = cu_header->offset_size; |
14431 | return offset; | |
14432 | } | |
14433 | ||
14434 | /* Read an offset from the data stream. */ | |
14435 | ||
14436 | static LONGEST | |
14437 | read_offset_1 (bfd *abfd, gdb_byte *buf, unsigned int offset_size) | |
613e1657 KB |
14438 | { |
14439 | LONGEST retval = 0; | |
14440 | ||
c764a876 | 14441 | switch (offset_size) |
613e1657 KB |
14442 | { |
14443 | case 4: | |
fe1b8b76 | 14444 | retval = bfd_get_32 (abfd, buf); |
613e1657 KB |
14445 | break; |
14446 | case 8: | |
fe1b8b76 | 14447 | retval = bfd_get_64 (abfd, buf); |
613e1657 KB |
14448 | break; |
14449 | default: | |
8e65ff28 | 14450 | internal_error (__FILE__, __LINE__, |
c764a876 | 14451 | _("read_offset_1: bad switch [in module %s]"), |
659b0389 | 14452 | bfd_get_filename (abfd)); |
613e1657 KB |
14453 | } |
14454 | ||
917c78fc | 14455 | return retval; |
613e1657 KB |
14456 | } |
14457 | ||
fe1b8b76 JB |
14458 | static gdb_byte * |
14459 | read_n_bytes (bfd *abfd, gdb_byte *buf, unsigned int size) | |
c906108c SS |
14460 | { |
14461 | /* If the size of a host char is 8 bits, we can return a pointer | |
14462 | to the buffer, otherwise we have to copy the data to a buffer | |
14463 | allocated on the temporary obstack. */ | |
4bdf3d34 | 14464 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c | 14465 | return buf; |
c906108c SS |
14466 | } |
14467 | ||
14468 | static char * | |
9b1c24c8 | 14469 | read_direct_string (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read_ptr) |
c906108c SS |
14470 | { |
14471 | /* If the size of a host char is 8 bits, we can return a pointer | |
14472 | to the string, otherwise we have to copy the string to a buffer | |
14473 | allocated on the temporary obstack. */ | |
4bdf3d34 | 14474 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c SS |
14475 | if (*buf == '\0') |
14476 | { | |
14477 | *bytes_read_ptr = 1; | |
14478 | return NULL; | |
14479 | } | |
fe1b8b76 JB |
14480 | *bytes_read_ptr = strlen ((char *) buf) + 1; |
14481 | return (char *) buf; | |
4bdf3d34 JJ |
14482 | } |
14483 | ||
14484 | static char * | |
cf2c3c16 | 14485 | read_indirect_string_at_offset (bfd *abfd, LONGEST str_offset) |
4bdf3d34 | 14486 | { |
be391dca | 14487 | dwarf2_read_section (dwarf2_per_objfile->objfile, &dwarf2_per_objfile->str); |
dce234bc | 14488 | if (dwarf2_per_objfile->str.buffer == NULL) |
cf2c3c16 TT |
14489 | error (_("DW_FORM_strp used without .debug_str section [in module %s]"), |
14490 | bfd_get_filename (abfd)); | |
dce234bc | 14491 | if (str_offset >= dwarf2_per_objfile->str.size) |
cf2c3c16 TT |
14492 | error (_("DW_FORM_strp pointing outside of " |
14493 | ".debug_str section [in module %s]"), | |
14494 | bfd_get_filename (abfd)); | |
4bdf3d34 | 14495 | gdb_assert (HOST_CHAR_BIT == 8); |
dce234bc | 14496 | if (dwarf2_per_objfile->str.buffer[str_offset] == '\0') |
4bdf3d34 | 14497 | return NULL; |
dce234bc | 14498 | return (char *) (dwarf2_per_objfile->str.buffer + str_offset); |
c906108c SS |
14499 | } |
14500 | ||
36586728 TT |
14501 | /* Read a string at offset STR_OFFSET in the .debug_str section from |
14502 | the .dwz file DWZ. Throw an error if the offset is too large. If | |
14503 | the string consists of a single NUL byte, return NULL; otherwise | |
14504 | return a pointer to the string. */ | |
14505 | ||
14506 | static char * | |
14507 | read_indirect_string_from_dwz (struct dwz_file *dwz, LONGEST str_offset) | |
14508 | { | |
14509 | dwarf2_read_section (dwarf2_per_objfile->objfile, &dwz->str); | |
14510 | ||
14511 | if (dwz->str.buffer == NULL) | |
14512 | error (_("DW_FORM_GNU_strp_alt used without .debug_str " | |
14513 | "section [in module %s]"), | |
14514 | bfd_get_filename (dwz->dwz_bfd)); | |
14515 | if (str_offset >= dwz->str.size) | |
14516 | error (_("DW_FORM_GNU_strp_alt pointing outside of " | |
14517 | ".debug_str section [in module %s]"), | |
14518 | bfd_get_filename (dwz->dwz_bfd)); | |
14519 | gdb_assert (HOST_CHAR_BIT == 8); | |
14520 | if (dwz->str.buffer[str_offset] == '\0') | |
14521 | return NULL; | |
14522 | return (char *) (dwz->str.buffer + str_offset); | |
14523 | } | |
14524 | ||
cf2c3c16 TT |
14525 | static char * |
14526 | read_indirect_string (bfd *abfd, gdb_byte *buf, | |
14527 | const struct comp_unit_head *cu_header, | |
14528 | unsigned int *bytes_read_ptr) | |
14529 | { | |
14530 | LONGEST str_offset = read_offset (abfd, buf, cu_header, bytes_read_ptr); | |
14531 | ||
14532 | return read_indirect_string_at_offset (abfd, str_offset); | |
14533 | } | |
14534 | ||
12df843f | 14535 | static ULONGEST |
fe1b8b76 | 14536 | read_unsigned_leb128 (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read_ptr) |
c906108c | 14537 | { |
12df843f | 14538 | ULONGEST result; |
ce5d95e1 | 14539 | unsigned int num_read; |
c906108c SS |
14540 | int i, shift; |
14541 | unsigned char byte; | |
14542 | ||
14543 | result = 0; | |
14544 | shift = 0; | |
14545 | num_read = 0; | |
14546 | i = 0; | |
14547 | while (1) | |
14548 | { | |
fe1b8b76 | 14549 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
14550 | buf++; |
14551 | num_read++; | |
12df843f | 14552 | result |= ((ULONGEST) (byte & 127) << shift); |
c906108c SS |
14553 | if ((byte & 128) == 0) |
14554 | { | |
14555 | break; | |
14556 | } | |
14557 | shift += 7; | |
14558 | } | |
14559 | *bytes_read_ptr = num_read; | |
14560 | return result; | |
14561 | } | |
14562 | ||
12df843f | 14563 | static LONGEST |
fe1b8b76 | 14564 | read_signed_leb128 (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read_ptr) |
c906108c | 14565 | { |
12df843f | 14566 | LONGEST result; |
77e0b926 | 14567 | int i, shift, num_read; |
c906108c SS |
14568 | unsigned char byte; |
14569 | ||
14570 | result = 0; | |
14571 | shift = 0; | |
c906108c SS |
14572 | num_read = 0; |
14573 | i = 0; | |
14574 | while (1) | |
14575 | { | |
fe1b8b76 | 14576 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
14577 | buf++; |
14578 | num_read++; | |
12df843f | 14579 | result |= ((LONGEST) (byte & 127) << shift); |
c906108c SS |
14580 | shift += 7; |
14581 | if ((byte & 128) == 0) | |
14582 | { | |
14583 | break; | |
14584 | } | |
14585 | } | |
77e0b926 | 14586 | if ((shift < 8 * sizeof (result)) && (byte & 0x40)) |
12df843f | 14587 | result |= -(((LONGEST) 1) << shift); |
c906108c SS |
14588 | *bytes_read_ptr = num_read; |
14589 | return result; | |
14590 | } | |
14591 | ||
3019eac3 DE |
14592 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. |
14593 | ADDR_BASE is the DW_AT_GNU_addr_base attribute or zero. | |
14594 | ADDR_SIZE is the size of addresses from the CU header. */ | |
14595 | ||
14596 | static CORE_ADDR | |
14597 | read_addr_index_1 (unsigned int addr_index, ULONGEST addr_base, int addr_size) | |
14598 | { | |
14599 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
14600 | bfd *abfd = objfile->obfd; | |
14601 | const gdb_byte *info_ptr; | |
14602 | ||
14603 | dwarf2_read_section (objfile, &dwarf2_per_objfile->addr); | |
14604 | if (dwarf2_per_objfile->addr.buffer == NULL) | |
14605 | error (_("DW_FORM_addr_index used without .debug_addr section [in module %s]"), | |
14606 | objfile->name); | |
14607 | if (addr_base + addr_index * addr_size >= dwarf2_per_objfile->addr.size) | |
14608 | error (_("DW_FORM_addr_index pointing outside of " | |
14609 | ".debug_addr section [in module %s]"), | |
14610 | objfile->name); | |
14611 | info_ptr = (dwarf2_per_objfile->addr.buffer | |
14612 | + addr_base + addr_index * addr_size); | |
14613 | if (addr_size == 4) | |
14614 | return bfd_get_32 (abfd, info_ptr); | |
14615 | else | |
14616 | return bfd_get_64 (abfd, info_ptr); | |
14617 | } | |
14618 | ||
14619 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. */ | |
14620 | ||
14621 | static CORE_ADDR | |
14622 | read_addr_index (struct dwarf2_cu *cu, unsigned int addr_index) | |
14623 | { | |
14624 | return read_addr_index_1 (addr_index, cu->addr_base, cu->header.addr_size); | |
14625 | } | |
14626 | ||
14627 | /* Given a pointer to an leb128 value, fetch the value from .debug_addr. */ | |
14628 | ||
14629 | static CORE_ADDR | |
14630 | read_addr_index_from_leb128 (struct dwarf2_cu *cu, gdb_byte *info_ptr, | |
14631 | unsigned int *bytes_read) | |
14632 | { | |
14633 | bfd *abfd = cu->objfile->obfd; | |
14634 | unsigned int addr_index = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
14635 | ||
14636 | return read_addr_index (cu, addr_index); | |
14637 | } | |
14638 | ||
14639 | /* Data structure to pass results from dwarf2_read_addr_index_reader | |
14640 | back to dwarf2_read_addr_index. */ | |
14641 | ||
14642 | struct dwarf2_read_addr_index_data | |
14643 | { | |
14644 | ULONGEST addr_base; | |
14645 | int addr_size; | |
14646 | }; | |
14647 | ||
14648 | /* die_reader_func for dwarf2_read_addr_index. */ | |
14649 | ||
14650 | static void | |
14651 | dwarf2_read_addr_index_reader (const struct die_reader_specs *reader, | |
14652 | gdb_byte *info_ptr, | |
14653 | struct die_info *comp_unit_die, | |
14654 | int has_children, | |
14655 | void *data) | |
14656 | { | |
14657 | struct dwarf2_cu *cu = reader->cu; | |
14658 | struct dwarf2_read_addr_index_data *aidata = | |
14659 | (struct dwarf2_read_addr_index_data *) data; | |
14660 | ||
14661 | aidata->addr_base = cu->addr_base; | |
14662 | aidata->addr_size = cu->header.addr_size; | |
14663 | } | |
14664 | ||
14665 | /* Given an index in .debug_addr, fetch the value. | |
14666 | NOTE: This can be called during dwarf expression evaluation, | |
14667 | long after the debug information has been read, and thus per_cu->cu | |
14668 | may no longer exist. */ | |
14669 | ||
14670 | CORE_ADDR | |
14671 | dwarf2_read_addr_index (struct dwarf2_per_cu_data *per_cu, | |
14672 | unsigned int addr_index) | |
14673 | { | |
14674 | struct objfile *objfile = per_cu->objfile; | |
14675 | struct dwarf2_cu *cu = per_cu->cu; | |
14676 | ULONGEST addr_base; | |
14677 | int addr_size; | |
14678 | ||
14679 | /* This is intended to be called from outside this file. */ | |
14680 | dw2_setup (objfile); | |
14681 | ||
14682 | /* We need addr_base and addr_size. | |
14683 | If we don't have PER_CU->cu, we have to get it. | |
14684 | Nasty, but the alternative is storing the needed info in PER_CU, | |
14685 | which at this point doesn't seem justified: it's not clear how frequently | |
14686 | it would get used and it would increase the size of every PER_CU. | |
14687 | Entry points like dwarf2_per_cu_addr_size do a similar thing | |
14688 | so we're not in uncharted territory here. | |
14689 | Alas we need to be a bit more complicated as addr_base is contained | |
14690 | in the DIE. | |
14691 | ||
14692 | We don't need to read the entire CU(/TU). | |
14693 | We just need the header and top level die. | |
a1b64ce1 | 14694 | |
3019eac3 | 14695 | IWBN to use the aging mechanism to let us lazily later discard the CU. |
a1b64ce1 | 14696 | For now we skip this optimization. */ |
3019eac3 DE |
14697 | |
14698 | if (cu != NULL) | |
14699 | { | |
14700 | addr_base = cu->addr_base; | |
14701 | addr_size = cu->header.addr_size; | |
14702 | } | |
14703 | else | |
14704 | { | |
14705 | struct dwarf2_read_addr_index_data aidata; | |
14706 | ||
a1b64ce1 DE |
14707 | /* Note: We can't use init_cutu_and_read_dies_simple here, |
14708 | we need addr_base. */ | |
14709 | init_cutu_and_read_dies (per_cu, NULL, 0, 0, | |
14710 | dwarf2_read_addr_index_reader, &aidata); | |
3019eac3 DE |
14711 | addr_base = aidata.addr_base; |
14712 | addr_size = aidata.addr_size; | |
14713 | } | |
14714 | ||
14715 | return read_addr_index_1 (addr_index, addr_base, addr_size); | |
14716 | } | |
14717 | ||
14718 | /* Given a DW_AT_str_index, fetch the string. */ | |
14719 | ||
14720 | static char * | |
14721 | read_str_index (const struct die_reader_specs *reader, | |
14722 | struct dwarf2_cu *cu, ULONGEST str_index) | |
14723 | { | |
14724 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
14725 | const char *dwo_name = objfile->name; | |
14726 | bfd *abfd = objfile->obfd; | |
14727 | struct dwo_sections *sections = &reader->dwo_file->sections; | |
14728 | gdb_byte *info_ptr; | |
14729 | ULONGEST str_offset; | |
14730 | ||
14731 | dwarf2_read_section (objfile, §ions->str); | |
14732 | dwarf2_read_section (objfile, §ions->str_offsets); | |
14733 | if (sections->str.buffer == NULL) | |
14734 | error (_("DW_FORM_str_index used without .debug_str.dwo section" | |
14735 | " in CU at offset 0x%lx [in module %s]"), | |
14736 | (long) cu->header.offset.sect_off, dwo_name); | |
14737 | if (sections->str_offsets.buffer == NULL) | |
14738 | error (_("DW_FORM_str_index used without .debug_str_offsets.dwo section" | |
14739 | " in CU at offset 0x%lx [in module %s]"), | |
14740 | (long) cu->header.offset.sect_off, dwo_name); | |
14741 | if (str_index * cu->header.offset_size >= sections->str_offsets.size) | |
14742 | error (_("DW_FORM_str_index pointing outside of .debug_str_offsets.dwo" | |
14743 | " section in CU at offset 0x%lx [in module %s]"), | |
14744 | (long) cu->header.offset.sect_off, dwo_name); | |
14745 | info_ptr = (sections->str_offsets.buffer | |
14746 | + str_index * cu->header.offset_size); | |
14747 | if (cu->header.offset_size == 4) | |
14748 | str_offset = bfd_get_32 (abfd, info_ptr); | |
14749 | else | |
14750 | str_offset = bfd_get_64 (abfd, info_ptr); | |
14751 | if (str_offset >= sections->str.size) | |
14752 | error (_("Offset from DW_FORM_str_index pointing outside of" | |
14753 | " .debug_str.dwo section in CU at offset 0x%lx [in module %s]"), | |
14754 | (long) cu->header.offset.sect_off, dwo_name); | |
14755 | return (char *) (sections->str.buffer + str_offset); | |
14756 | } | |
14757 | ||
3019eac3 DE |
14758 | /* Return the length of an LEB128 number in BUF. */ |
14759 | ||
14760 | static int | |
14761 | leb128_size (const gdb_byte *buf) | |
14762 | { | |
14763 | const gdb_byte *begin = buf; | |
14764 | gdb_byte byte; | |
14765 | ||
14766 | while (1) | |
14767 | { | |
14768 | byte = *buf++; | |
14769 | if ((byte & 128) == 0) | |
14770 | return buf - begin; | |
14771 | } | |
14772 | } | |
14773 | ||
c906108c | 14774 | static void |
e142c38c | 14775 | set_cu_language (unsigned int lang, struct dwarf2_cu *cu) |
c906108c SS |
14776 | { |
14777 | switch (lang) | |
14778 | { | |
14779 | case DW_LANG_C89: | |
76bee0cc | 14780 | case DW_LANG_C99: |
c906108c | 14781 | case DW_LANG_C: |
e142c38c | 14782 | cu->language = language_c; |
c906108c SS |
14783 | break; |
14784 | case DW_LANG_C_plus_plus: | |
e142c38c | 14785 | cu->language = language_cplus; |
c906108c | 14786 | break; |
6aecb9c2 JB |
14787 | case DW_LANG_D: |
14788 | cu->language = language_d; | |
14789 | break; | |
c906108c SS |
14790 | case DW_LANG_Fortran77: |
14791 | case DW_LANG_Fortran90: | |
b21b22e0 | 14792 | case DW_LANG_Fortran95: |
e142c38c | 14793 | cu->language = language_fortran; |
c906108c | 14794 | break; |
a766d390 DE |
14795 | case DW_LANG_Go: |
14796 | cu->language = language_go; | |
14797 | break; | |
c906108c | 14798 | case DW_LANG_Mips_Assembler: |
e142c38c | 14799 | cu->language = language_asm; |
c906108c | 14800 | break; |
bebd888e | 14801 | case DW_LANG_Java: |
e142c38c | 14802 | cu->language = language_java; |
bebd888e | 14803 | break; |
c906108c | 14804 | case DW_LANG_Ada83: |
8aaf0b47 | 14805 | case DW_LANG_Ada95: |
bc5f45f8 JB |
14806 | cu->language = language_ada; |
14807 | break; | |
72019c9c GM |
14808 | case DW_LANG_Modula2: |
14809 | cu->language = language_m2; | |
14810 | break; | |
fe8e67fd PM |
14811 | case DW_LANG_Pascal83: |
14812 | cu->language = language_pascal; | |
14813 | break; | |
22566fbd DJ |
14814 | case DW_LANG_ObjC: |
14815 | cu->language = language_objc; | |
14816 | break; | |
c906108c SS |
14817 | case DW_LANG_Cobol74: |
14818 | case DW_LANG_Cobol85: | |
c906108c | 14819 | default: |
e142c38c | 14820 | cu->language = language_minimal; |
c906108c SS |
14821 | break; |
14822 | } | |
e142c38c | 14823 | cu->language_defn = language_def (cu->language); |
c906108c SS |
14824 | } |
14825 | ||
14826 | /* Return the named attribute or NULL if not there. */ | |
14827 | ||
14828 | static struct attribute * | |
e142c38c | 14829 | dwarf2_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) |
c906108c | 14830 | { |
a48e046c | 14831 | for (;;) |
c906108c | 14832 | { |
a48e046c TT |
14833 | unsigned int i; |
14834 | struct attribute *spec = NULL; | |
14835 | ||
14836 | for (i = 0; i < die->num_attrs; ++i) | |
14837 | { | |
14838 | if (die->attrs[i].name == name) | |
14839 | return &die->attrs[i]; | |
14840 | if (die->attrs[i].name == DW_AT_specification | |
14841 | || die->attrs[i].name == DW_AT_abstract_origin) | |
14842 | spec = &die->attrs[i]; | |
14843 | } | |
14844 | ||
14845 | if (!spec) | |
14846 | break; | |
c906108c | 14847 | |
f2f0e013 | 14848 | die = follow_die_ref (die, spec, &cu); |
f2f0e013 | 14849 | } |
c5aa993b | 14850 | |
c906108c SS |
14851 | return NULL; |
14852 | } | |
14853 | ||
348e048f DE |
14854 | /* Return the named attribute or NULL if not there, |
14855 | but do not follow DW_AT_specification, etc. | |
14856 | This is for use in contexts where we're reading .debug_types dies. | |
14857 | Following DW_AT_specification, DW_AT_abstract_origin will take us | |
14858 | back up the chain, and we want to go down. */ | |
14859 | ||
14860 | static struct attribute * | |
45e58e77 | 14861 | dwarf2_attr_no_follow (struct die_info *die, unsigned int name) |
348e048f DE |
14862 | { |
14863 | unsigned int i; | |
14864 | ||
14865 | for (i = 0; i < die->num_attrs; ++i) | |
14866 | if (die->attrs[i].name == name) | |
14867 | return &die->attrs[i]; | |
14868 | ||
14869 | return NULL; | |
14870 | } | |
14871 | ||
05cf31d1 JB |
14872 | /* Return non-zero iff the attribute NAME is defined for the given DIE, |
14873 | and holds a non-zero value. This function should only be used for | |
2dc7f7b3 | 14874 | DW_FORM_flag or DW_FORM_flag_present attributes. */ |
05cf31d1 JB |
14875 | |
14876 | static int | |
14877 | dwarf2_flag_true_p (struct die_info *die, unsigned name, struct dwarf2_cu *cu) | |
14878 | { | |
14879 | struct attribute *attr = dwarf2_attr (die, name, cu); | |
14880 | ||
14881 | return (attr && DW_UNSND (attr)); | |
14882 | } | |
14883 | ||
3ca72b44 | 14884 | static int |
e142c38c | 14885 | die_is_declaration (struct die_info *die, struct dwarf2_cu *cu) |
3ca72b44 | 14886 | { |
05cf31d1 JB |
14887 | /* A DIE is a declaration if it has a DW_AT_declaration attribute |
14888 | which value is non-zero. However, we have to be careful with | |
14889 | DIEs having a DW_AT_specification attribute, because dwarf2_attr() | |
14890 | (via dwarf2_flag_true_p) follows this attribute. So we may | |
14891 | end up accidently finding a declaration attribute that belongs | |
14892 | to a different DIE referenced by the specification attribute, | |
14893 | even though the given DIE does not have a declaration attribute. */ | |
14894 | return (dwarf2_flag_true_p (die, DW_AT_declaration, cu) | |
14895 | && dwarf2_attr (die, DW_AT_specification, cu) == NULL); | |
3ca72b44 AC |
14896 | } |
14897 | ||
63d06c5c | 14898 | /* Return the die giving the specification for DIE, if there is |
f2f0e013 | 14899 | one. *SPEC_CU is the CU containing DIE on input, and the CU |
edb3359d DJ |
14900 | containing the return value on output. If there is no |
14901 | specification, but there is an abstract origin, that is | |
14902 | returned. */ | |
63d06c5c DC |
14903 | |
14904 | static struct die_info * | |
f2f0e013 | 14905 | die_specification (struct die_info *die, struct dwarf2_cu **spec_cu) |
63d06c5c | 14906 | { |
f2f0e013 DJ |
14907 | struct attribute *spec_attr = dwarf2_attr (die, DW_AT_specification, |
14908 | *spec_cu); | |
63d06c5c | 14909 | |
edb3359d DJ |
14910 | if (spec_attr == NULL) |
14911 | spec_attr = dwarf2_attr (die, DW_AT_abstract_origin, *spec_cu); | |
14912 | ||
63d06c5c DC |
14913 | if (spec_attr == NULL) |
14914 | return NULL; | |
14915 | else | |
f2f0e013 | 14916 | return follow_die_ref (die, spec_attr, spec_cu); |
63d06c5c | 14917 | } |
c906108c | 14918 | |
debd256d | 14919 | /* Free the line_header structure *LH, and any arrays and strings it |
ae2de4f8 DE |
14920 | refers to. |
14921 | NOTE: This is also used as a "cleanup" function. */ | |
14922 | ||
debd256d JB |
14923 | static void |
14924 | free_line_header (struct line_header *lh) | |
14925 | { | |
14926 | if (lh->standard_opcode_lengths) | |
a8bc7b56 | 14927 | xfree (lh->standard_opcode_lengths); |
debd256d JB |
14928 | |
14929 | /* Remember that all the lh->file_names[i].name pointers are | |
14930 | pointers into debug_line_buffer, and don't need to be freed. */ | |
14931 | if (lh->file_names) | |
a8bc7b56 | 14932 | xfree (lh->file_names); |
debd256d JB |
14933 | |
14934 | /* Similarly for the include directory names. */ | |
14935 | if (lh->include_dirs) | |
a8bc7b56 | 14936 | xfree (lh->include_dirs); |
debd256d | 14937 | |
a8bc7b56 | 14938 | xfree (lh); |
debd256d JB |
14939 | } |
14940 | ||
debd256d | 14941 | /* Add an entry to LH's include directory table. */ |
ae2de4f8 | 14942 | |
debd256d JB |
14943 | static void |
14944 | add_include_dir (struct line_header *lh, char *include_dir) | |
c906108c | 14945 | { |
debd256d JB |
14946 | /* Grow the array if necessary. */ |
14947 | if (lh->include_dirs_size == 0) | |
c5aa993b | 14948 | { |
debd256d JB |
14949 | lh->include_dirs_size = 1; /* for testing */ |
14950 | lh->include_dirs = xmalloc (lh->include_dirs_size | |
14951 | * sizeof (*lh->include_dirs)); | |
14952 | } | |
14953 | else if (lh->num_include_dirs >= lh->include_dirs_size) | |
14954 | { | |
14955 | lh->include_dirs_size *= 2; | |
14956 | lh->include_dirs = xrealloc (lh->include_dirs, | |
14957 | (lh->include_dirs_size | |
14958 | * sizeof (*lh->include_dirs))); | |
c5aa993b | 14959 | } |
c906108c | 14960 | |
debd256d JB |
14961 | lh->include_dirs[lh->num_include_dirs++] = include_dir; |
14962 | } | |
6e70227d | 14963 | |
debd256d | 14964 | /* Add an entry to LH's file name table. */ |
ae2de4f8 | 14965 | |
debd256d JB |
14966 | static void |
14967 | add_file_name (struct line_header *lh, | |
14968 | char *name, | |
14969 | unsigned int dir_index, | |
14970 | unsigned int mod_time, | |
14971 | unsigned int length) | |
14972 | { | |
14973 | struct file_entry *fe; | |
14974 | ||
14975 | /* Grow the array if necessary. */ | |
14976 | if (lh->file_names_size == 0) | |
14977 | { | |
14978 | lh->file_names_size = 1; /* for testing */ | |
14979 | lh->file_names = xmalloc (lh->file_names_size | |
14980 | * sizeof (*lh->file_names)); | |
14981 | } | |
14982 | else if (lh->num_file_names >= lh->file_names_size) | |
14983 | { | |
14984 | lh->file_names_size *= 2; | |
14985 | lh->file_names = xrealloc (lh->file_names, | |
14986 | (lh->file_names_size | |
14987 | * sizeof (*lh->file_names))); | |
14988 | } | |
14989 | ||
14990 | fe = &lh->file_names[lh->num_file_names++]; | |
14991 | fe->name = name; | |
14992 | fe->dir_index = dir_index; | |
14993 | fe->mod_time = mod_time; | |
14994 | fe->length = length; | |
aaa75496 | 14995 | fe->included_p = 0; |
cb1df416 | 14996 | fe->symtab = NULL; |
debd256d | 14997 | } |
6e70227d | 14998 | |
36586728 TT |
14999 | /* A convenience function to find the proper .debug_line section for a |
15000 | CU. */ | |
15001 | ||
15002 | static struct dwarf2_section_info * | |
15003 | get_debug_line_section (struct dwarf2_cu *cu) | |
15004 | { | |
15005 | struct dwarf2_section_info *section; | |
15006 | ||
15007 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
15008 | DWO file. */ | |
15009 | if (cu->dwo_unit && cu->per_cu->is_debug_types) | |
15010 | section = &cu->dwo_unit->dwo_file->sections.line; | |
15011 | else if (cu->per_cu->is_dwz) | |
15012 | { | |
15013 | struct dwz_file *dwz = dwarf2_get_dwz_file (); | |
15014 | ||
15015 | section = &dwz->line; | |
15016 | } | |
15017 | else | |
15018 | section = &dwarf2_per_objfile->line; | |
15019 | ||
15020 | return section; | |
15021 | } | |
15022 | ||
debd256d | 15023 | /* Read the statement program header starting at OFFSET in |
3019eac3 | 15024 | .debug_line, or .debug_line.dwo. Return a pointer |
6502dd73 | 15025 | to a struct line_header, allocated using xmalloc. |
debd256d JB |
15026 | |
15027 | NOTE: the strings in the include directory and file name tables of | |
3019eac3 DE |
15028 | the returned object point into the dwarf line section buffer, |
15029 | and must not be freed. */ | |
ae2de4f8 | 15030 | |
debd256d | 15031 | static struct line_header * |
3019eac3 | 15032 | dwarf_decode_line_header (unsigned int offset, struct dwarf2_cu *cu) |
debd256d JB |
15033 | { |
15034 | struct cleanup *back_to; | |
15035 | struct line_header *lh; | |
fe1b8b76 | 15036 | gdb_byte *line_ptr; |
c764a876 | 15037 | unsigned int bytes_read, offset_size; |
debd256d JB |
15038 | int i; |
15039 | char *cur_dir, *cur_file; | |
3019eac3 DE |
15040 | struct dwarf2_section_info *section; |
15041 | bfd *abfd; | |
15042 | ||
36586728 | 15043 | section = get_debug_line_section (cu); |
3019eac3 DE |
15044 | dwarf2_read_section (dwarf2_per_objfile->objfile, section); |
15045 | if (section->buffer == NULL) | |
debd256d | 15046 | { |
3019eac3 DE |
15047 | if (cu->dwo_unit && cu->per_cu->is_debug_types) |
15048 | complaint (&symfile_complaints, _("missing .debug_line.dwo section")); | |
15049 | else | |
15050 | complaint (&symfile_complaints, _("missing .debug_line section")); | |
debd256d JB |
15051 | return 0; |
15052 | } | |
15053 | ||
fceca515 DE |
15054 | /* We can't do this until we know the section is non-empty. |
15055 | Only then do we know we have such a section. */ | |
15056 | abfd = section->asection->owner; | |
15057 | ||
a738430d MK |
15058 | /* Make sure that at least there's room for the total_length field. |
15059 | That could be 12 bytes long, but we're just going to fudge that. */ | |
3019eac3 | 15060 | if (offset + 4 >= section->size) |
debd256d | 15061 | { |
4d3c2250 | 15062 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
15063 | return 0; |
15064 | } | |
15065 | ||
15066 | lh = xmalloc (sizeof (*lh)); | |
15067 | memset (lh, 0, sizeof (*lh)); | |
15068 | back_to = make_cleanup ((make_cleanup_ftype *) free_line_header, | |
15069 | (void *) lh); | |
15070 | ||
3019eac3 | 15071 | line_ptr = section->buffer + offset; |
debd256d | 15072 | |
a738430d | 15073 | /* Read in the header. */ |
6e70227d | 15074 | lh->total_length = |
c764a876 DE |
15075 | read_checked_initial_length_and_offset (abfd, line_ptr, &cu->header, |
15076 | &bytes_read, &offset_size); | |
debd256d | 15077 | line_ptr += bytes_read; |
3019eac3 | 15078 | if (line_ptr + lh->total_length > (section->buffer + section->size)) |
debd256d | 15079 | { |
4d3c2250 | 15080 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
15081 | return 0; |
15082 | } | |
15083 | lh->statement_program_end = line_ptr + lh->total_length; | |
15084 | lh->version = read_2_bytes (abfd, line_ptr); | |
15085 | line_ptr += 2; | |
c764a876 DE |
15086 | lh->header_length = read_offset_1 (abfd, line_ptr, offset_size); |
15087 | line_ptr += offset_size; | |
debd256d JB |
15088 | lh->minimum_instruction_length = read_1_byte (abfd, line_ptr); |
15089 | line_ptr += 1; | |
2dc7f7b3 TT |
15090 | if (lh->version >= 4) |
15091 | { | |
15092 | lh->maximum_ops_per_instruction = read_1_byte (abfd, line_ptr); | |
15093 | line_ptr += 1; | |
15094 | } | |
15095 | else | |
15096 | lh->maximum_ops_per_instruction = 1; | |
15097 | ||
15098 | if (lh->maximum_ops_per_instruction == 0) | |
15099 | { | |
15100 | lh->maximum_ops_per_instruction = 1; | |
15101 | complaint (&symfile_complaints, | |
3e43a32a MS |
15102 | _("invalid maximum_ops_per_instruction " |
15103 | "in `.debug_line' section")); | |
2dc7f7b3 TT |
15104 | } |
15105 | ||
debd256d JB |
15106 | lh->default_is_stmt = read_1_byte (abfd, line_ptr); |
15107 | line_ptr += 1; | |
15108 | lh->line_base = read_1_signed_byte (abfd, line_ptr); | |
15109 | line_ptr += 1; | |
15110 | lh->line_range = read_1_byte (abfd, line_ptr); | |
15111 | line_ptr += 1; | |
15112 | lh->opcode_base = read_1_byte (abfd, line_ptr); | |
15113 | line_ptr += 1; | |
15114 | lh->standard_opcode_lengths | |
fe1b8b76 | 15115 | = xmalloc (lh->opcode_base * sizeof (lh->standard_opcode_lengths[0])); |
debd256d JB |
15116 | |
15117 | lh->standard_opcode_lengths[0] = 1; /* This should never be used anyway. */ | |
15118 | for (i = 1; i < lh->opcode_base; ++i) | |
15119 | { | |
15120 | lh->standard_opcode_lengths[i] = read_1_byte (abfd, line_ptr); | |
15121 | line_ptr += 1; | |
15122 | } | |
15123 | ||
a738430d | 15124 | /* Read directory table. */ |
9b1c24c8 | 15125 | while ((cur_dir = read_direct_string (abfd, line_ptr, &bytes_read)) != NULL) |
debd256d JB |
15126 | { |
15127 | line_ptr += bytes_read; | |
15128 | add_include_dir (lh, cur_dir); | |
15129 | } | |
15130 | line_ptr += bytes_read; | |
15131 | ||
a738430d | 15132 | /* Read file name table. */ |
9b1c24c8 | 15133 | while ((cur_file = read_direct_string (abfd, line_ptr, &bytes_read)) != NULL) |
debd256d JB |
15134 | { |
15135 | unsigned int dir_index, mod_time, length; | |
15136 | ||
15137 | line_ptr += bytes_read; | |
15138 | dir_index = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
15139 | line_ptr += bytes_read; | |
15140 | mod_time = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
15141 | line_ptr += bytes_read; | |
15142 | length = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
15143 | line_ptr += bytes_read; | |
15144 | ||
15145 | add_file_name (lh, cur_file, dir_index, mod_time, length); | |
15146 | } | |
15147 | line_ptr += bytes_read; | |
6e70227d | 15148 | lh->statement_program_start = line_ptr; |
debd256d | 15149 | |
3019eac3 | 15150 | if (line_ptr > (section->buffer + section->size)) |
4d3c2250 | 15151 | complaint (&symfile_complaints, |
3e43a32a MS |
15152 | _("line number info header doesn't " |
15153 | "fit in `.debug_line' section")); | |
debd256d JB |
15154 | |
15155 | discard_cleanups (back_to); | |
15156 | return lh; | |
15157 | } | |
c906108c | 15158 | |
c6da4cef DE |
15159 | /* Subroutine of dwarf_decode_lines to simplify it. |
15160 | Return the file name of the psymtab for included file FILE_INDEX | |
15161 | in line header LH of PST. | |
15162 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
15163 | If space for the result is malloc'd, it will be freed by a cleanup. | |
1ed59174 JK |
15164 | Returns NULL if FILE_INDEX should be ignored, i.e., it is pst->filename. |
15165 | ||
15166 | The function creates dangling cleanup registration. */ | |
c6da4cef DE |
15167 | |
15168 | static char * | |
15169 | psymtab_include_file_name (const struct line_header *lh, int file_index, | |
15170 | const struct partial_symtab *pst, | |
15171 | const char *comp_dir) | |
15172 | { | |
15173 | const struct file_entry fe = lh->file_names [file_index]; | |
15174 | char *include_name = fe.name; | |
15175 | char *include_name_to_compare = include_name; | |
15176 | char *dir_name = NULL; | |
72b9f47f TT |
15177 | const char *pst_filename; |
15178 | char *copied_name = NULL; | |
c6da4cef DE |
15179 | int file_is_pst; |
15180 | ||
15181 | if (fe.dir_index) | |
15182 | dir_name = lh->include_dirs[fe.dir_index - 1]; | |
15183 | ||
15184 | if (!IS_ABSOLUTE_PATH (include_name) | |
15185 | && (dir_name != NULL || comp_dir != NULL)) | |
15186 | { | |
15187 | /* Avoid creating a duplicate psymtab for PST. | |
15188 | We do this by comparing INCLUDE_NAME and PST_FILENAME. | |
15189 | Before we do the comparison, however, we need to account | |
15190 | for DIR_NAME and COMP_DIR. | |
15191 | First prepend dir_name (if non-NULL). If we still don't | |
15192 | have an absolute path prepend comp_dir (if non-NULL). | |
15193 | However, the directory we record in the include-file's | |
15194 | psymtab does not contain COMP_DIR (to match the | |
15195 | corresponding symtab(s)). | |
15196 | ||
15197 | Example: | |
15198 | ||
15199 | bash$ cd /tmp | |
15200 | bash$ gcc -g ./hello.c | |
15201 | include_name = "hello.c" | |
15202 | dir_name = "." | |
15203 | DW_AT_comp_dir = comp_dir = "/tmp" | |
15204 | DW_AT_name = "./hello.c" */ | |
15205 | ||
15206 | if (dir_name != NULL) | |
15207 | { | |
15208 | include_name = concat (dir_name, SLASH_STRING, | |
15209 | include_name, (char *)NULL); | |
15210 | include_name_to_compare = include_name; | |
15211 | make_cleanup (xfree, include_name); | |
15212 | } | |
15213 | if (!IS_ABSOLUTE_PATH (include_name) && comp_dir != NULL) | |
15214 | { | |
15215 | include_name_to_compare = concat (comp_dir, SLASH_STRING, | |
15216 | include_name, (char *)NULL); | |
15217 | } | |
15218 | } | |
15219 | ||
15220 | pst_filename = pst->filename; | |
15221 | if (!IS_ABSOLUTE_PATH (pst_filename) && pst->dirname != NULL) | |
15222 | { | |
72b9f47f TT |
15223 | copied_name = concat (pst->dirname, SLASH_STRING, |
15224 | pst_filename, (char *)NULL); | |
15225 | pst_filename = copied_name; | |
c6da4cef DE |
15226 | } |
15227 | ||
1e3fad37 | 15228 | file_is_pst = FILENAME_CMP (include_name_to_compare, pst_filename) == 0; |
c6da4cef DE |
15229 | |
15230 | if (include_name_to_compare != include_name) | |
15231 | xfree (include_name_to_compare); | |
72b9f47f TT |
15232 | if (copied_name != NULL) |
15233 | xfree (copied_name); | |
c6da4cef DE |
15234 | |
15235 | if (file_is_pst) | |
15236 | return NULL; | |
15237 | return include_name; | |
15238 | } | |
15239 | ||
c91513d8 PP |
15240 | /* Ignore this record_line request. */ |
15241 | ||
15242 | static void | |
15243 | noop_record_line (struct subfile *subfile, int line, CORE_ADDR pc) | |
15244 | { | |
15245 | return; | |
15246 | } | |
15247 | ||
f3f5162e DE |
15248 | /* Subroutine of dwarf_decode_lines to simplify it. |
15249 | Process the line number information in LH. */ | |
debd256d | 15250 | |
c906108c | 15251 | static void |
f3f5162e DE |
15252 | dwarf_decode_lines_1 (struct line_header *lh, const char *comp_dir, |
15253 | struct dwarf2_cu *cu, struct partial_symtab *pst) | |
c906108c | 15254 | { |
a8c50c1f | 15255 | gdb_byte *line_ptr, *extended_end; |
fe1b8b76 | 15256 | gdb_byte *line_end; |
a8c50c1f | 15257 | unsigned int bytes_read, extended_len; |
c906108c | 15258 | unsigned char op_code, extended_op, adj_opcode; |
e142c38c DJ |
15259 | CORE_ADDR baseaddr; |
15260 | struct objfile *objfile = cu->objfile; | |
f3f5162e | 15261 | bfd *abfd = objfile->obfd; |
fbf65064 | 15262 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
aaa75496 | 15263 | const int decode_for_pst_p = (pst != NULL); |
f3f5162e | 15264 | struct subfile *last_subfile = NULL; |
c91513d8 PP |
15265 | void (*p_record_line) (struct subfile *subfile, int line, CORE_ADDR pc) |
15266 | = record_line; | |
e142c38c DJ |
15267 | |
15268 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 15269 | |
debd256d JB |
15270 | line_ptr = lh->statement_program_start; |
15271 | line_end = lh->statement_program_end; | |
c906108c SS |
15272 | |
15273 | /* Read the statement sequences until there's nothing left. */ | |
15274 | while (line_ptr < line_end) | |
15275 | { | |
15276 | /* state machine registers */ | |
15277 | CORE_ADDR address = 0; | |
15278 | unsigned int file = 1; | |
15279 | unsigned int line = 1; | |
15280 | unsigned int column = 0; | |
debd256d | 15281 | int is_stmt = lh->default_is_stmt; |
c906108c SS |
15282 | int basic_block = 0; |
15283 | int end_sequence = 0; | |
fbf65064 | 15284 | CORE_ADDR addr; |
2dc7f7b3 | 15285 | unsigned char op_index = 0; |
c906108c | 15286 | |
aaa75496 | 15287 | if (!decode_for_pst_p && lh->num_file_names >= file) |
c906108c | 15288 | { |
aaa75496 | 15289 | /* Start a subfile for the current file of the state machine. */ |
debd256d JB |
15290 | /* lh->include_dirs and lh->file_names are 0-based, but the |
15291 | directory and file name numbers in the statement program | |
15292 | are 1-based. */ | |
15293 | struct file_entry *fe = &lh->file_names[file - 1]; | |
4f1520fb | 15294 | char *dir = NULL; |
a738430d | 15295 | |
debd256d JB |
15296 | if (fe->dir_index) |
15297 | dir = lh->include_dirs[fe->dir_index - 1]; | |
4f1520fb FR |
15298 | |
15299 | dwarf2_start_subfile (fe->name, dir, comp_dir); | |
c906108c SS |
15300 | } |
15301 | ||
a738430d | 15302 | /* Decode the table. */ |
c5aa993b | 15303 | while (!end_sequence) |
c906108c SS |
15304 | { |
15305 | op_code = read_1_byte (abfd, line_ptr); | |
15306 | line_ptr += 1; | |
59205f5a JB |
15307 | if (line_ptr > line_end) |
15308 | { | |
15309 | dwarf2_debug_line_missing_end_sequence_complaint (); | |
15310 | break; | |
15311 | } | |
9aa1fe7e | 15312 | |
debd256d | 15313 | if (op_code >= lh->opcode_base) |
6e70227d | 15314 | { |
a738430d | 15315 | /* Special operand. */ |
debd256d | 15316 | adj_opcode = op_code - lh->opcode_base; |
2dc7f7b3 TT |
15317 | address += (((op_index + (adj_opcode / lh->line_range)) |
15318 | / lh->maximum_ops_per_instruction) | |
15319 | * lh->minimum_instruction_length); | |
15320 | op_index = ((op_index + (adj_opcode / lh->line_range)) | |
15321 | % lh->maximum_ops_per_instruction); | |
debd256d | 15322 | line += lh->line_base + (adj_opcode % lh->line_range); |
59205f5a | 15323 | if (lh->num_file_names < file || file == 0) |
25e43795 | 15324 | dwarf2_debug_line_missing_file_complaint (); |
2dc7f7b3 TT |
15325 | /* For now we ignore lines not starting on an |
15326 | instruction boundary. */ | |
15327 | else if (op_index == 0) | |
25e43795 DJ |
15328 | { |
15329 | lh->file_names[file - 1].included_p = 1; | |
ca5f395d | 15330 | if (!decode_for_pst_p && is_stmt) |
fbf65064 UW |
15331 | { |
15332 | if (last_subfile != current_subfile) | |
15333 | { | |
15334 | addr = gdbarch_addr_bits_remove (gdbarch, address); | |
15335 | if (last_subfile) | |
c91513d8 | 15336 | (*p_record_line) (last_subfile, 0, addr); |
fbf65064 UW |
15337 | last_subfile = current_subfile; |
15338 | } | |
25e43795 | 15339 | /* Append row to matrix using current values. */ |
7019d805 | 15340 | addr = gdbarch_addr_bits_remove (gdbarch, address); |
c91513d8 | 15341 | (*p_record_line) (current_subfile, line, addr); |
366da635 | 15342 | } |
25e43795 | 15343 | } |
ca5f395d | 15344 | basic_block = 0; |
9aa1fe7e GK |
15345 | } |
15346 | else switch (op_code) | |
c906108c SS |
15347 | { |
15348 | case DW_LNS_extended_op: | |
3e43a32a MS |
15349 | extended_len = read_unsigned_leb128 (abfd, line_ptr, |
15350 | &bytes_read); | |
473b7be6 | 15351 | line_ptr += bytes_read; |
a8c50c1f | 15352 | extended_end = line_ptr + extended_len; |
c906108c SS |
15353 | extended_op = read_1_byte (abfd, line_ptr); |
15354 | line_ptr += 1; | |
15355 | switch (extended_op) | |
15356 | { | |
15357 | case DW_LNE_end_sequence: | |
c91513d8 | 15358 | p_record_line = record_line; |
c906108c | 15359 | end_sequence = 1; |
c906108c SS |
15360 | break; |
15361 | case DW_LNE_set_address: | |
e7c27a73 | 15362 | address = read_address (abfd, line_ptr, cu, &bytes_read); |
c91513d8 PP |
15363 | |
15364 | if (address == 0 && !dwarf2_per_objfile->has_section_at_zero) | |
15365 | { | |
15366 | /* This line table is for a function which has been | |
15367 | GCd by the linker. Ignore it. PR gdb/12528 */ | |
15368 | ||
15369 | long line_offset | |
36586728 | 15370 | = line_ptr - get_debug_line_section (cu)->buffer; |
c91513d8 PP |
15371 | |
15372 | complaint (&symfile_complaints, | |
15373 | _(".debug_line address at offset 0x%lx is 0 " | |
15374 | "[in module %s]"), | |
bb5ed363 | 15375 | line_offset, objfile->name); |
c91513d8 PP |
15376 | p_record_line = noop_record_line; |
15377 | } | |
15378 | ||
2dc7f7b3 | 15379 | op_index = 0; |
107d2387 AC |
15380 | line_ptr += bytes_read; |
15381 | address += baseaddr; | |
c906108c SS |
15382 | break; |
15383 | case DW_LNE_define_file: | |
debd256d JB |
15384 | { |
15385 | char *cur_file; | |
15386 | unsigned int dir_index, mod_time, length; | |
6e70227d | 15387 | |
3e43a32a MS |
15388 | cur_file = read_direct_string (abfd, line_ptr, |
15389 | &bytes_read); | |
debd256d JB |
15390 | line_ptr += bytes_read; |
15391 | dir_index = | |
15392 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
15393 | line_ptr += bytes_read; | |
15394 | mod_time = | |
15395 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
15396 | line_ptr += bytes_read; | |
15397 | length = | |
15398 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
15399 | line_ptr += bytes_read; | |
15400 | add_file_name (lh, cur_file, dir_index, mod_time, length); | |
15401 | } | |
c906108c | 15402 | break; |
d0c6ba3d CC |
15403 | case DW_LNE_set_discriminator: |
15404 | /* The discriminator is not interesting to the debugger; | |
15405 | just ignore it. */ | |
15406 | line_ptr = extended_end; | |
15407 | break; | |
c906108c | 15408 | default: |
4d3c2250 | 15409 | complaint (&symfile_complaints, |
e2e0b3e5 | 15410 | _("mangled .debug_line section")); |
debd256d | 15411 | return; |
c906108c | 15412 | } |
a8c50c1f DJ |
15413 | /* Make sure that we parsed the extended op correctly. If e.g. |
15414 | we expected a different address size than the producer used, | |
15415 | we may have read the wrong number of bytes. */ | |
15416 | if (line_ptr != extended_end) | |
15417 | { | |
15418 | complaint (&symfile_complaints, | |
15419 | _("mangled .debug_line section")); | |
15420 | return; | |
15421 | } | |
c906108c SS |
15422 | break; |
15423 | case DW_LNS_copy: | |
59205f5a | 15424 | if (lh->num_file_names < file || file == 0) |
25e43795 DJ |
15425 | dwarf2_debug_line_missing_file_complaint (); |
15426 | else | |
366da635 | 15427 | { |
25e43795 | 15428 | lh->file_names[file - 1].included_p = 1; |
ca5f395d | 15429 | if (!decode_for_pst_p && is_stmt) |
fbf65064 UW |
15430 | { |
15431 | if (last_subfile != current_subfile) | |
15432 | { | |
15433 | addr = gdbarch_addr_bits_remove (gdbarch, address); | |
15434 | if (last_subfile) | |
c91513d8 | 15435 | (*p_record_line) (last_subfile, 0, addr); |
fbf65064 UW |
15436 | last_subfile = current_subfile; |
15437 | } | |
7019d805 | 15438 | addr = gdbarch_addr_bits_remove (gdbarch, address); |
c91513d8 | 15439 | (*p_record_line) (current_subfile, line, addr); |
fbf65064 | 15440 | } |
366da635 | 15441 | } |
c906108c SS |
15442 | basic_block = 0; |
15443 | break; | |
15444 | case DW_LNS_advance_pc: | |
2dc7f7b3 TT |
15445 | { |
15446 | CORE_ADDR adjust | |
15447 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
15448 | ||
15449 | address += (((op_index + adjust) | |
15450 | / lh->maximum_ops_per_instruction) | |
15451 | * lh->minimum_instruction_length); | |
15452 | op_index = ((op_index + adjust) | |
15453 | % lh->maximum_ops_per_instruction); | |
15454 | line_ptr += bytes_read; | |
15455 | } | |
c906108c SS |
15456 | break; |
15457 | case DW_LNS_advance_line: | |
15458 | line += read_signed_leb128 (abfd, line_ptr, &bytes_read); | |
15459 | line_ptr += bytes_read; | |
15460 | break; | |
15461 | case DW_LNS_set_file: | |
debd256d | 15462 | { |
a738430d MK |
15463 | /* The arrays lh->include_dirs and lh->file_names are |
15464 | 0-based, but the directory and file name numbers in | |
15465 | the statement program are 1-based. */ | |
debd256d | 15466 | struct file_entry *fe; |
4f1520fb | 15467 | char *dir = NULL; |
a738430d | 15468 | |
debd256d JB |
15469 | file = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
15470 | line_ptr += bytes_read; | |
59205f5a | 15471 | if (lh->num_file_names < file || file == 0) |
25e43795 DJ |
15472 | dwarf2_debug_line_missing_file_complaint (); |
15473 | else | |
15474 | { | |
15475 | fe = &lh->file_names[file - 1]; | |
15476 | if (fe->dir_index) | |
15477 | dir = lh->include_dirs[fe->dir_index - 1]; | |
15478 | if (!decode_for_pst_p) | |
15479 | { | |
15480 | last_subfile = current_subfile; | |
15481 | dwarf2_start_subfile (fe->name, dir, comp_dir); | |
15482 | } | |
15483 | } | |
debd256d | 15484 | } |
c906108c SS |
15485 | break; |
15486 | case DW_LNS_set_column: | |
15487 | column = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
15488 | line_ptr += bytes_read; | |
15489 | break; | |
15490 | case DW_LNS_negate_stmt: | |
15491 | is_stmt = (!is_stmt); | |
15492 | break; | |
15493 | case DW_LNS_set_basic_block: | |
15494 | basic_block = 1; | |
15495 | break; | |
c2c6d25f JM |
15496 | /* Add to the address register of the state machine the |
15497 | address increment value corresponding to special opcode | |
a738430d MK |
15498 | 255. I.e., this value is scaled by the minimum |
15499 | instruction length since special opcode 255 would have | |
b021a221 | 15500 | scaled the increment. */ |
c906108c | 15501 | case DW_LNS_const_add_pc: |
2dc7f7b3 TT |
15502 | { |
15503 | CORE_ADDR adjust = (255 - lh->opcode_base) / lh->line_range; | |
15504 | ||
15505 | address += (((op_index + adjust) | |
15506 | / lh->maximum_ops_per_instruction) | |
15507 | * lh->minimum_instruction_length); | |
15508 | op_index = ((op_index + adjust) | |
15509 | % lh->maximum_ops_per_instruction); | |
15510 | } | |
c906108c SS |
15511 | break; |
15512 | case DW_LNS_fixed_advance_pc: | |
15513 | address += read_2_bytes (abfd, line_ptr); | |
2dc7f7b3 | 15514 | op_index = 0; |
c906108c SS |
15515 | line_ptr += 2; |
15516 | break; | |
9aa1fe7e | 15517 | default: |
a738430d MK |
15518 | { |
15519 | /* Unknown standard opcode, ignore it. */ | |
9aa1fe7e | 15520 | int i; |
a738430d | 15521 | |
debd256d | 15522 | for (i = 0; i < lh->standard_opcode_lengths[op_code]; i++) |
9aa1fe7e GK |
15523 | { |
15524 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
15525 | line_ptr += bytes_read; | |
15526 | } | |
15527 | } | |
c906108c SS |
15528 | } |
15529 | } | |
59205f5a JB |
15530 | if (lh->num_file_names < file || file == 0) |
15531 | dwarf2_debug_line_missing_file_complaint (); | |
15532 | else | |
15533 | { | |
15534 | lh->file_names[file - 1].included_p = 1; | |
15535 | if (!decode_for_pst_p) | |
fbf65064 UW |
15536 | { |
15537 | addr = gdbarch_addr_bits_remove (gdbarch, address); | |
c91513d8 | 15538 | (*p_record_line) (current_subfile, 0, addr); |
fbf65064 | 15539 | } |
59205f5a | 15540 | } |
c906108c | 15541 | } |
f3f5162e DE |
15542 | } |
15543 | ||
15544 | /* Decode the Line Number Program (LNP) for the given line_header | |
15545 | structure and CU. The actual information extracted and the type | |
15546 | of structures created from the LNP depends on the value of PST. | |
15547 | ||
15548 | 1. If PST is NULL, then this procedure uses the data from the program | |
15549 | to create all necessary symbol tables, and their linetables. | |
15550 | ||
15551 | 2. If PST is not NULL, this procedure reads the program to determine | |
15552 | the list of files included by the unit represented by PST, and | |
15553 | builds all the associated partial symbol tables. | |
15554 | ||
15555 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
15556 | It is used for relative paths in the line table. | |
15557 | NOTE: When processing partial symtabs (pst != NULL), | |
15558 | comp_dir == pst->dirname. | |
15559 | ||
15560 | NOTE: It is important that psymtabs have the same file name (via strcmp) | |
15561 | as the corresponding symtab. Since COMP_DIR is not used in the name of the | |
15562 | symtab we don't use it in the name of the psymtabs we create. | |
15563 | E.g. expand_line_sal requires this when finding psymtabs to expand. | |
15564 | A good testcase for this is mb-inline.exp. */ | |
15565 | ||
15566 | static void | |
15567 | dwarf_decode_lines (struct line_header *lh, const char *comp_dir, | |
15568 | struct dwarf2_cu *cu, struct partial_symtab *pst, | |
15569 | int want_line_info) | |
15570 | { | |
15571 | struct objfile *objfile = cu->objfile; | |
15572 | const int decode_for_pst_p = (pst != NULL); | |
15573 | struct subfile *first_subfile = current_subfile; | |
15574 | ||
15575 | if (want_line_info) | |
15576 | dwarf_decode_lines_1 (lh, comp_dir, cu, pst); | |
aaa75496 JB |
15577 | |
15578 | if (decode_for_pst_p) | |
15579 | { | |
15580 | int file_index; | |
15581 | ||
15582 | /* Now that we're done scanning the Line Header Program, we can | |
15583 | create the psymtab of each included file. */ | |
15584 | for (file_index = 0; file_index < lh->num_file_names; file_index++) | |
15585 | if (lh->file_names[file_index].included_p == 1) | |
15586 | { | |
c6da4cef DE |
15587 | char *include_name = |
15588 | psymtab_include_file_name (lh, file_index, pst, comp_dir); | |
15589 | if (include_name != NULL) | |
aaa75496 JB |
15590 | dwarf2_create_include_psymtab (include_name, pst, objfile); |
15591 | } | |
15592 | } | |
cb1df416 DJ |
15593 | else |
15594 | { | |
15595 | /* Make sure a symtab is created for every file, even files | |
15596 | which contain only variables (i.e. no code with associated | |
15597 | line numbers). */ | |
cb1df416 | 15598 | int i; |
cb1df416 DJ |
15599 | |
15600 | for (i = 0; i < lh->num_file_names; i++) | |
15601 | { | |
15602 | char *dir = NULL; | |
f3f5162e | 15603 | struct file_entry *fe; |
9a619af0 | 15604 | |
cb1df416 DJ |
15605 | fe = &lh->file_names[i]; |
15606 | if (fe->dir_index) | |
15607 | dir = lh->include_dirs[fe->dir_index - 1]; | |
15608 | dwarf2_start_subfile (fe->name, dir, comp_dir); | |
15609 | ||
15610 | /* Skip the main file; we don't need it, and it must be | |
15611 | allocated last, so that it will show up before the | |
15612 | non-primary symtabs in the objfile's symtab list. */ | |
15613 | if (current_subfile == first_subfile) | |
15614 | continue; | |
15615 | ||
15616 | if (current_subfile->symtab == NULL) | |
15617 | current_subfile->symtab = allocate_symtab (current_subfile->name, | |
bb5ed363 | 15618 | objfile); |
cb1df416 DJ |
15619 | fe->symtab = current_subfile->symtab; |
15620 | } | |
15621 | } | |
c906108c SS |
15622 | } |
15623 | ||
15624 | /* Start a subfile for DWARF. FILENAME is the name of the file and | |
15625 | DIRNAME the name of the source directory which contains FILENAME | |
4f1520fb FR |
15626 | or NULL if not known. COMP_DIR is the compilation directory for the |
15627 | linetable's compilation unit or NULL if not known. | |
c906108c SS |
15628 | This routine tries to keep line numbers from identical absolute and |
15629 | relative file names in a common subfile. | |
15630 | ||
15631 | Using the `list' example from the GDB testsuite, which resides in | |
15632 | /srcdir and compiling it with Irix6.2 cc in /compdir using a filename | |
15633 | of /srcdir/list0.c yields the following debugging information for list0.c: | |
15634 | ||
c5aa993b JM |
15635 | DW_AT_name: /srcdir/list0.c |
15636 | DW_AT_comp_dir: /compdir | |
357e46e7 | 15637 | files.files[0].name: list0.h |
c5aa993b | 15638 | files.files[0].dir: /srcdir |
357e46e7 | 15639 | files.files[1].name: list0.c |
c5aa993b | 15640 | files.files[1].dir: /srcdir |
c906108c SS |
15641 | |
15642 | The line number information for list0.c has to end up in a single | |
4f1520fb FR |
15643 | subfile, so that `break /srcdir/list0.c:1' works as expected. |
15644 | start_subfile will ensure that this happens provided that we pass the | |
15645 | concatenation of files.files[1].dir and files.files[1].name as the | |
15646 | subfile's name. */ | |
c906108c SS |
15647 | |
15648 | static void | |
3e43a32a MS |
15649 | dwarf2_start_subfile (char *filename, const char *dirname, |
15650 | const char *comp_dir) | |
c906108c | 15651 | { |
4f1520fb FR |
15652 | char *fullname; |
15653 | ||
15654 | /* While reading the DIEs, we call start_symtab(DW_AT_name, DW_AT_comp_dir). | |
15655 | `start_symtab' will always pass the contents of DW_AT_comp_dir as | |
15656 | second argument to start_subfile. To be consistent, we do the | |
15657 | same here. In order not to lose the line information directory, | |
15658 | we concatenate it to the filename when it makes sense. | |
15659 | Note that the Dwarf3 standard says (speaking of filenames in line | |
15660 | information): ``The directory index is ignored for file names | |
15661 | that represent full path names''. Thus ignoring dirname in the | |
15662 | `else' branch below isn't an issue. */ | |
c906108c | 15663 | |
d5166ae1 | 15664 | if (!IS_ABSOLUTE_PATH (filename) && dirname != NULL) |
4f1520fb FR |
15665 | fullname = concat (dirname, SLASH_STRING, filename, (char *)NULL); |
15666 | else | |
15667 | fullname = filename; | |
c906108c | 15668 | |
4f1520fb FR |
15669 | start_subfile (fullname, comp_dir); |
15670 | ||
15671 | if (fullname != filename) | |
15672 | xfree (fullname); | |
c906108c SS |
15673 | } |
15674 | ||
f4dc4d17 DE |
15675 | /* Start a symtab for DWARF. |
15676 | NAME, COMP_DIR, LOW_PC are passed to start_symtab. */ | |
15677 | ||
15678 | static void | |
15679 | dwarf2_start_symtab (struct dwarf2_cu *cu, | |
15d034d0 | 15680 | const char *name, const char *comp_dir, CORE_ADDR low_pc) |
f4dc4d17 DE |
15681 | { |
15682 | start_symtab (name, comp_dir, low_pc); | |
15683 | record_debugformat ("DWARF 2"); | |
15684 | record_producer (cu->producer); | |
15685 | ||
15686 | /* We assume that we're processing GCC output. */ | |
15687 | processing_gcc_compilation = 2; | |
15688 | ||
4d4ec4e5 | 15689 | cu->processing_has_namespace_info = 0; |
f4dc4d17 DE |
15690 | } |
15691 | ||
4c2df51b DJ |
15692 | static void |
15693 | var_decode_location (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 15694 | struct dwarf2_cu *cu) |
4c2df51b | 15695 | { |
e7c27a73 DJ |
15696 | struct objfile *objfile = cu->objfile; |
15697 | struct comp_unit_head *cu_header = &cu->header; | |
15698 | ||
4c2df51b DJ |
15699 | /* NOTE drow/2003-01-30: There used to be a comment and some special |
15700 | code here to turn a symbol with DW_AT_external and a | |
15701 | SYMBOL_VALUE_ADDRESS of 0 into a LOC_UNRESOLVED symbol. This was | |
15702 | necessary for platforms (maybe Alpha, certainly PowerPC GNU/Linux | |
15703 | with some versions of binutils) where shared libraries could have | |
15704 | relocations against symbols in their debug information - the | |
15705 | minimal symbol would have the right address, but the debug info | |
15706 | would not. It's no longer necessary, because we will explicitly | |
15707 | apply relocations when we read in the debug information now. */ | |
15708 | ||
15709 | /* A DW_AT_location attribute with no contents indicates that a | |
15710 | variable has been optimized away. */ | |
15711 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size == 0) | |
15712 | { | |
15713 | SYMBOL_CLASS (sym) = LOC_OPTIMIZED_OUT; | |
15714 | return; | |
15715 | } | |
15716 | ||
15717 | /* Handle one degenerate form of location expression specially, to | |
15718 | preserve GDB's previous behavior when section offsets are | |
3019eac3 DE |
15719 | specified. If this is just a DW_OP_addr or DW_OP_GNU_addr_index |
15720 | then mark this symbol as LOC_STATIC. */ | |
4c2df51b DJ |
15721 | |
15722 | if (attr_form_is_block (attr) | |
3019eac3 DE |
15723 | && ((DW_BLOCK (attr)->data[0] == DW_OP_addr |
15724 | && DW_BLOCK (attr)->size == 1 + cu_header->addr_size) | |
15725 | || (DW_BLOCK (attr)->data[0] == DW_OP_GNU_addr_index | |
15726 | && (DW_BLOCK (attr)->size | |
15727 | == 1 + leb128_size (&DW_BLOCK (attr)->data[1]))))) | |
4c2df51b | 15728 | { |
891d2f0b | 15729 | unsigned int dummy; |
4c2df51b | 15730 | |
3019eac3 DE |
15731 | if (DW_BLOCK (attr)->data[0] == DW_OP_addr) |
15732 | SYMBOL_VALUE_ADDRESS (sym) = | |
15733 | read_address (objfile->obfd, DW_BLOCK (attr)->data + 1, cu, &dummy); | |
15734 | else | |
15735 | SYMBOL_VALUE_ADDRESS (sym) = | |
15736 | read_addr_index_from_leb128 (cu, DW_BLOCK (attr)->data + 1, &dummy); | |
907fc202 | 15737 | SYMBOL_CLASS (sym) = LOC_STATIC; |
4c2df51b DJ |
15738 | fixup_symbol_section (sym, objfile); |
15739 | SYMBOL_VALUE_ADDRESS (sym) += ANOFFSET (objfile->section_offsets, | |
15740 | SYMBOL_SECTION (sym)); | |
4c2df51b DJ |
15741 | return; |
15742 | } | |
15743 | ||
15744 | /* NOTE drow/2002-01-30: It might be worthwhile to have a static | |
15745 | expression evaluator, and use LOC_COMPUTED only when necessary | |
15746 | (i.e. when the value of a register or memory location is | |
15747 | referenced, or a thread-local block, etc.). Then again, it might | |
15748 | not be worthwhile. I'm assuming that it isn't unless performance | |
15749 | or memory numbers show me otherwise. */ | |
15750 | ||
e7c27a73 | 15751 | dwarf2_symbol_mark_computed (attr, sym, cu); |
4c2df51b | 15752 | SYMBOL_CLASS (sym) = LOC_COMPUTED; |
8be455d7 JK |
15753 | |
15754 | if (SYMBOL_COMPUTED_OPS (sym) == &dwarf2_loclist_funcs) | |
15755 | cu->has_loclist = 1; | |
4c2df51b DJ |
15756 | } |
15757 | ||
c906108c SS |
15758 | /* Given a pointer to a DWARF information entry, figure out if we need |
15759 | to make a symbol table entry for it, and if so, create a new entry | |
15760 | and return a pointer to it. | |
15761 | If TYPE is NULL, determine symbol type from the die, otherwise | |
34eaf542 TT |
15762 | used the passed type. |
15763 | If SPACE is not NULL, use it to hold the new symbol. If it is | |
15764 | NULL, allocate a new symbol on the objfile's obstack. */ | |
c906108c SS |
15765 | |
15766 | static struct symbol * | |
34eaf542 TT |
15767 | new_symbol_full (struct die_info *die, struct type *type, struct dwarf2_cu *cu, |
15768 | struct symbol *space) | |
c906108c | 15769 | { |
e7c27a73 | 15770 | struct objfile *objfile = cu->objfile; |
c906108c | 15771 | struct symbol *sym = NULL; |
15d034d0 | 15772 | const char *name; |
c906108c SS |
15773 | struct attribute *attr = NULL; |
15774 | struct attribute *attr2 = NULL; | |
e142c38c | 15775 | CORE_ADDR baseaddr; |
e37fd15a SW |
15776 | struct pending **list_to_add = NULL; |
15777 | ||
edb3359d | 15778 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
e142c38c DJ |
15779 | |
15780 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 15781 | |
94af9270 | 15782 | name = dwarf2_name (die, cu); |
c906108c SS |
15783 | if (name) |
15784 | { | |
94af9270 | 15785 | const char *linkagename; |
34eaf542 | 15786 | int suppress_add = 0; |
94af9270 | 15787 | |
34eaf542 TT |
15788 | if (space) |
15789 | sym = space; | |
15790 | else | |
15791 | sym = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct symbol); | |
c906108c | 15792 | OBJSTAT (objfile, n_syms++); |
2de7ced7 DJ |
15793 | |
15794 | /* Cache this symbol's name and the name's demangled form (if any). */ | |
33e5013e | 15795 | SYMBOL_SET_LANGUAGE (sym, cu->language); |
94af9270 KS |
15796 | linkagename = dwarf2_physname (name, die, cu); |
15797 | SYMBOL_SET_NAMES (sym, linkagename, strlen (linkagename), 0, objfile); | |
c906108c | 15798 | |
f55ee35c JK |
15799 | /* Fortran does not have mangling standard and the mangling does differ |
15800 | between gfortran, iFort etc. */ | |
15801 | if (cu->language == language_fortran | |
b250c185 | 15802 | && symbol_get_demangled_name (&(sym->ginfo)) == NULL) |
29df156d | 15803 | symbol_set_demangled_name (&(sym->ginfo), |
cfc594ee | 15804 | dwarf2_full_name (name, die, cu), |
29df156d | 15805 | NULL); |
f55ee35c | 15806 | |
c906108c | 15807 | /* Default assumptions. |
c5aa993b | 15808 | Use the passed type or decode it from the die. */ |
176620f1 | 15809 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
875dc2fc | 15810 | SYMBOL_CLASS (sym) = LOC_OPTIMIZED_OUT; |
c906108c SS |
15811 | if (type != NULL) |
15812 | SYMBOL_TYPE (sym) = type; | |
15813 | else | |
e7c27a73 | 15814 | SYMBOL_TYPE (sym) = die_type (die, cu); |
edb3359d DJ |
15815 | attr = dwarf2_attr (die, |
15816 | inlined_func ? DW_AT_call_line : DW_AT_decl_line, | |
15817 | cu); | |
c906108c SS |
15818 | if (attr) |
15819 | { | |
15820 | SYMBOL_LINE (sym) = DW_UNSND (attr); | |
15821 | } | |
cb1df416 | 15822 | |
edb3359d DJ |
15823 | attr = dwarf2_attr (die, |
15824 | inlined_func ? DW_AT_call_file : DW_AT_decl_file, | |
15825 | cu); | |
cb1df416 DJ |
15826 | if (attr) |
15827 | { | |
15828 | int file_index = DW_UNSND (attr); | |
9a619af0 | 15829 | |
cb1df416 DJ |
15830 | if (cu->line_header == NULL |
15831 | || file_index > cu->line_header->num_file_names) | |
15832 | complaint (&symfile_complaints, | |
15833 | _("file index out of range")); | |
1c3d648d | 15834 | else if (file_index > 0) |
cb1df416 DJ |
15835 | { |
15836 | struct file_entry *fe; | |
9a619af0 | 15837 | |
cb1df416 DJ |
15838 | fe = &cu->line_header->file_names[file_index - 1]; |
15839 | SYMBOL_SYMTAB (sym) = fe->symtab; | |
15840 | } | |
15841 | } | |
15842 | ||
c906108c SS |
15843 | switch (die->tag) |
15844 | { | |
15845 | case DW_TAG_label: | |
e142c38c | 15846 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
c906108c SS |
15847 | if (attr) |
15848 | { | |
15849 | SYMBOL_VALUE_ADDRESS (sym) = DW_ADDR (attr) + baseaddr; | |
15850 | } | |
0f5238ed TT |
15851 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_core_addr; |
15852 | SYMBOL_DOMAIN (sym) = LABEL_DOMAIN; | |
c906108c | 15853 | SYMBOL_CLASS (sym) = LOC_LABEL; |
0f5238ed | 15854 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
15855 | break; |
15856 | case DW_TAG_subprogram: | |
15857 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
15858 | finish_block. */ | |
15859 | SYMBOL_CLASS (sym) = LOC_BLOCK; | |
e142c38c | 15860 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
2cfa0c8d JB |
15861 | if ((attr2 && (DW_UNSND (attr2) != 0)) |
15862 | || cu->language == language_ada) | |
c906108c | 15863 | { |
2cfa0c8d JB |
15864 | /* Subprograms marked external are stored as a global symbol. |
15865 | Ada subprograms, whether marked external or not, are always | |
15866 | stored as a global symbol, because we want to be able to | |
15867 | access them globally. For instance, we want to be able | |
15868 | to break on a nested subprogram without having to | |
15869 | specify the context. */ | |
e37fd15a | 15870 | list_to_add = &global_symbols; |
c906108c SS |
15871 | } |
15872 | else | |
15873 | { | |
e37fd15a | 15874 | list_to_add = cu->list_in_scope; |
c906108c SS |
15875 | } |
15876 | break; | |
edb3359d DJ |
15877 | case DW_TAG_inlined_subroutine: |
15878 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
15879 | finish_block. */ | |
15880 | SYMBOL_CLASS (sym) = LOC_BLOCK; | |
15881 | SYMBOL_INLINED (sym) = 1; | |
481860b3 | 15882 | list_to_add = cu->list_in_scope; |
edb3359d | 15883 | break; |
34eaf542 TT |
15884 | case DW_TAG_template_value_param: |
15885 | suppress_add = 1; | |
15886 | /* Fall through. */ | |
72929c62 | 15887 | case DW_TAG_constant: |
c906108c | 15888 | case DW_TAG_variable: |
254e6b9e | 15889 | case DW_TAG_member: |
0963b4bd MS |
15890 | /* Compilation with minimal debug info may result in |
15891 | variables with missing type entries. Change the | |
15892 | misleading `void' type to something sensible. */ | |
c906108c | 15893 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_VOID) |
64c50499 | 15894 | SYMBOL_TYPE (sym) |
46bf5051 | 15895 | = objfile_type (objfile)->nodebug_data_symbol; |
64c50499 | 15896 | |
e142c38c | 15897 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
254e6b9e DE |
15898 | /* In the case of DW_TAG_member, we should only be called for |
15899 | static const members. */ | |
15900 | if (die->tag == DW_TAG_member) | |
15901 | { | |
3863f96c DE |
15902 | /* dwarf2_add_field uses die_is_declaration, |
15903 | so we do the same. */ | |
254e6b9e DE |
15904 | gdb_assert (die_is_declaration (die, cu)); |
15905 | gdb_assert (attr); | |
15906 | } | |
c906108c SS |
15907 | if (attr) |
15908 | { | |
e7c27a73 | 15909 | dwarf2_const_value (attr, sym, cu); |
e142c38c | 15910 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
e37fd15a | 15911 | if (!suppress_add) |
34eaf542 TT |
15912 | { |
15913 | if (attr2 && (DW_UNSND (attr2) != 0)) | |
e37fd15a | 15914 | list_to_add = &global_symbols; |
34eaf542 | 15915 | else |
e37fd15a | 15916 | list_to_add = cu->list_in_scope; |
34eaf542 | 15917 | } |
c906108c SS |
15918 | break; |
15919 | } | |
e142c38c | 15920 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
15921 | if (attr) |
15922 | { | |
e7c27a73 | 15923 | var_decode_location (attr, sym, cu); |
e142c38c | 15924 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
4357ac6c TT |
15925 | |
15926 | /* Fortran explicitly imports any global symbols to the local | |
15927 | scope by DW_TAG_common_block. */ | |
15928 | if (cu->language == language_fortran && die->parent | |
15929 | && die->parent->tag == DW_TAG_common_block) | |
15930 | attr2 = NULL; | |
15931 | ||
caac4577 JG |
15932 | if (SYMBOL_CLASS (sym) == LOC_STATIC |
15933 | && SYMBOL_VALUE_ADDRESS (sym) == 0 | |
15934 | && !dwarf2_per_objfile->has_section_at_zero) | |
15935 | { | |
15936 | /* When a static variable is eliminated by the linker, | |
15937 | the corresponding debug information is not stripped | |
15938 | out, but the variable address is set to null; | |
15939 | do not add such variables into symbol table. */ | |
15940 | } | |
15941 | else if (attr2 && (DW_UNSND (attr2) != 0)) | |
1c809c68 | 15942 | { |
f55ee35c JK |
15943 | /* Workaround gfortran PR debug/40040 - it uses |
15944 | DW_AT_location for variables in -fPIC libraries which may | |
15945 | get overriden by other libraries/executable and get | |
15946 | a different address. Resolve it by the minimal symbol | |
15947 | which may come from inferior's executable using copy | |
15948 | relocation. Make this workaround only for gfortran as for | |
15949 | other compilers GDB cannot guess the minimal symbol | |
15950 | Fortran mangling kind. */ | |
15951 | if (cu->language == language_fortran && die->parent | |
15952 | && die->parent->tag == DW_TAG_module | |
15953 | && cu->producer | |
15954 | && strncmp (cu->producer, "GNU Fortran ", 12) == 0) | |
15955 | SYMBOL_CLASS (sym) = LOC_UNRESOLVED; | |
15956 | ||
1c809c68 TT |
15957 | /* A variable with DW_AT_external is never static, |
15958 | but it may be block-scoped. */ | |
15959 | list_to_add = (cu->list_in_scope == &file_symbols | |
15960 | ? &global_symbols : cu->list_in_scope); | |
1c809c68 | 15961 | } |
c906108c | 15962 | else |
e37fd15a | 15963 | list_to_add = cu->list_in_scope; |
c906108c SS |
15964 | } |
15965 | else | |
15966 | { | |
15967 | /* We do not know the address of this symbol. | |
c5aa993b JM |
15968 | If it is an external symbol and we have type information |
15969 | for it, enter the symbol as a LOC_UNRESOLVED symbol. | |
15970 | The address of the variable will then be determined from | |
15971 | the minimal symbol table whenever the variable is | |
15972 | referenced. */ | |
e142c38c | 15973 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
0971de02 TT |
15974 | |
15975 | /* Fortran explicitly imports any global symbols to the local | |
15976 | scope by DW_TAG_common_block. */ | |
15977 | if (cu->language == language_fortran && die->parent | |
15978 | && die->parent->tag == DW_TAG_common_block) | |
15979 | { | |
15980 | /* SYMBOL_CLASS doesn't matter here because | |
15981 | read_common_block is going to reset it. */ | |
15982 | if (!suppress_add) | |
15983 | list_to_add = cu->list_in_scope; | |
15984 | } | |
15985 | else if (attr2 && (DW_UNSND (attr2) != 0) | |
15986 | && dwarf2_attr (die, DW_AT_type, cu) != NULL) | |
c906108c | 15987 | { |
0fe7935b DJ |
15988 | /* A variable with DW_AT_external is never static, but it |
15989 | may be block-scoped. */ | |
15990 | list_to_add = (cu->list_in_scope == &file_symbols | |
15991 | ? &global_symbols : cu->list_in_scope); | |
15992 | ||
c906108c | 15993 | SYMBOL_CLASS (sym) = LOC_UNRESOLVED; |
c906108c | 15994 | } |
442ddf59 JK |
15995 | else if (!die_is_declaration (die, cu)) |
15996 | { | |
15997 | /* Use the default LOC_OPTIMIZED_OUT class. */ | |
15998 | gdb_assert (SYMBOL_CLASS (sym) == LOC_OPTIMIZED_OUT); | |
e37fd15a SW |
15999 | if (!suppress_add) |
16000 | list_to_add = cu->list_in_scope; | |
442ddf59 | 16001 | } |
c906108c SS |
16002 | } |
16003 | break; | |
16004 | case DW_TAG_formal_parameter: | |
edb3359d DJ |
16005 | /* If we are inside a function, mark this as an argument. If |
16006 | not, we might be looking at an argument to an inlined function | |
16007 | when we do not have enough information to show inlined frames; | |
16008 | pretend it's a local variable in that case so that the user can | |
16009 | still see it. */ | |
16010 | if (context_stack_depth > 0 | |
16011 | && context_stack[context_stack_depth - 1].name != NULL) | |
16012 | SYMBOL_IS_ARGUMENT (sym) = 1; | |
e142c38c | 16013 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
16014 | if (attr) |
16015 | { | |
e7c27a73 | 16016 | var_decode_location (attr, sym, cu); |
c906108c | 16017 | } |
e142c38c | 16018 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
16019 | if (attr) |
16020 | { | |
e7c27a73 | 16021 | dwarf2_const_value (attr, sym, cu); |
c906108c | 16022 | } |
f346a30d | 16023 | |
e37fd15a | 16024 | list_to_add = cu->list_in_scope; |
c906108c SS |
16025 | break; |
16026 | case DW_TAG_unspecified_parameters: | |
16027 | /* From varargs functions; gdb doesn't seem to have any | |
16028 | interest in this information, so just ignore it for now. | |
16029 | (FIXME?) */ | |
16030 | break; | |
34eaf542 TT |
16031 | case DW_TAG_template_type_param: |
16032 | suppress_add = 1; | |
16033 | /* Fall through. */ | |
c906108c | 16034 | case DW_TAG_class_type: |
680b30c7 | 16035 | case DW_TAG_interface_type: |
c906108c SS |
16036 | case DW_TAG_structure_type: |
16037 | case DW_TAG_union_type: | |
72019c9c | 16038 | case DW_TAG_set_type: |
c906108c SS |
16039 | case DW_TAG_enumeration_type: |
16040 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
176620f1 | 16041 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c906108c | 16042 | |
63d06c5c | 16043 | { |
987504bb | 16044 | /* NOTE: carlton/2003-11-10: C++ and Java class symbols shouldn't |
63d06c5c DC |
16045 | really ever be static objects: otherwise, if you try |
16046 | to, say, break of a class's method and you're in a file | |
16047 | which doesn't mention that class, it won't work unless | |
16048 | the check for all static symbols in lookup_symbol_aux | |
16049 | saves you. See the OtherFileClass tests in | |
16050 | gdb.c++/namespace.exp. */ | |
16051 | ||
e37fd15a | 16052 | if (!suppress_add) |
34eaf542 | 16053 | { |
34eaf542 TT |
16054 | list_to_add = (cu->list_in_scope == &file_symbols |
16055 | && (cu->language == language_cplus | |
16056 | || cu->language == language_java) | |
16057 | ? &global_symbols : cu->list_in_scope); | |
63d06c5c | 16058 | |
64382290 TT |
16059 | /* The semantics of C++ state that "struct foo { |
16060 | ... }" also defines a typedef for "foo". A Java | |
16061 | class declaration also defines a typedef for the | |
16062 | class. */ | |
16063 | if (cu->language == language_cplus | |
16064 | || cu->language == language_java | |
16065 | || cu->language == language_ada) | |
16066 | { | |
16067 | /* The symbol's name is already allocated along | |
16068 | with this objfile, so we don't need to | |
16069 | duplicate it for the type. */ | |
16070 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) | |
16071 | TYPE_NAME (SYMBOL_TYPE (sym)) = SYMBOL_SEARCH_NAME (sym); | |
16072 | } | |
63d06c5c DC |
16073 | } |
16074 | } | |
c906108c SS |
16075 | break; |
16076 | case DW_TAG_typedef: | |
63d06c5c DC |
16077 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; |
16078 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; | |
e37fd15a | 16079 | list_to_add = cu->list_in_scope; |
63d06c5c | 16080 | break; |
c906108c | 16081 | case DW_TAG_base_type: |
a02abb62 | 16082 | case DW_TAG_subrange_type: |
c906108c | 16083 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; |
176620f1 | 16084 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 16085 | list_to_add = cu->list_in_scope; |
c906108c SS |
16086 | break; |
16087 | case DW_TAG_enumerator: | |
e142c38c | 16088 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
16089 | if (attr) |
16090 | { | |
e7c27a73 | 16091 | dwarf2_const_value (attr, sym, cu); |
c906108c | 16092 | } |
63d06c5c DC |
16093 | { |
16094 | /* NOTE: carlton/2003-11-10: See comment above in the | |
16095 | DW_TAG_class_type, etc. block. */ | |
16096 | ||
e142c38c | 16097 | list_to_add = (cu->list_in_scope == &file_symbols |
987504bb JJ |
16098 | && (cu->language == language_cplus |
16099 | || cu->language == language_java) | |
e142c38c | 16100 | ? &global_symbols : cu->list_in_scope); |
63d06c5c | 16101 | } |
c906108c | 16102 | break; |
5c4e30ca DC |
16103 | case DW_TAG_namespace: |
16104 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
e37fd15a | 16105 | list_to_add = &global_symbols; |
5c4e30ca | 16106 | break; |
4357ac6c | 16107 | case DW_TAG_common_block: |
5a352474 | 16108 | SYMBOL_CLASS (sym) = LOC_COMMON_BLOCK; |
4357ac6c TT |
16109 | SYMBOL_DOMAIN (sym) = COMMON_BLOCK_DOMAIN; |
16110 | add_symbol_to_list (sym, cu->list_in_scope); | |
16111 | break; | |
c906108c SS |
16112 | default: |
16113 | /* Not a tag we recognize. Hopefully we aren't processing | |
16114 | trash data, but since we must specifically ignore things | |
16115 | we don't recognize, there is nothing else we should do at | |
0963b4bd | 16116 | this point. */ |
e2e0b3e5 | 16117 | complaint (&symfile_complaints, _("unsupported tag: '%s'"), |
4d3c2250 | 16118 | dwarf_tag_name (die->tag)); |
c906108c SS |
16119 | break; |
16120 | } | |
df8a16a1 | 16121 | |
e37fd15a SW |
16122 | if (suppress_add) |
16123 | { | |
16124 | sym->hash_next = objfile->template_symbols; | |
16125 | objfile->template_symbols = sym; | |
16126 | list_to_add = NULL; | |
16127 | } | |
16128 | ||
16129 | if (list_to_add != NULL) | |
16130 | add_symbol_to_list (sym, list_to_add); | |
16131 | ||
df8a16a1 DJ |
16132 | /* For the benefit of old versions of GCC, check for anonymous |
16133 | namespaces based on the demangled name. */ | |
4d4ec4e5 | 16134 | if (!cu->processing_has_namespace_info |
94af9270 | 16135 | && cu->language == language_cplus) |
a10964d1 | 16136 | cp_scan_for_anonymous_namespaces (sym, objfile); |
c906108c SS |
16137 | } |
16138 | return (sym); | |
16139 | } | |
16140 | ||
34eaf542 TT |
16141 | /* A wrapper for new_symbol_full that always allocates a new symbol. */ |
16142 | ||
16143 | static struct symbol * | |
16144 | new_symbol (struct die_info *die, struct type *type, struct dwarf2_cu *cu) | |
16145 | { | |
16146 | return new_symbol_full (die, type, cu, NULL); | |
16147 | } | |
16148 | ||
98bfdba5 PA |
16149 | /* Given an attr with a DW_FORM_dataN value in host byte order, |
16150 | zero-extend it as appropriate for the symbol's type. The DWARF | |
16151 | standard (v4) is not entirely clear about the meaning of using | |
16152 | DW_FORM_dataN for a constant with a signed type, where the type is | |
16153 | wider than the data. The conclusion of a discussion on the DWARF | |
16154 | list was that this is unspecified. We choose to always zero-extend | |
16155 | because that is the interpretation long in use by GCC. */ | |
c906108c | 16156 | |
98bfdba5 PA |
16157 | static gdb_byte * |
16158 | dwarf2_const_value_data (struct attribute *attr, struct type *type, | |
16159 | const char *name, struct obstack *obstack, | |
12df843f | 16160 | struct dwarf2_cu *cu, LONGEST *value, int bits) |
c906108c | 16161 | { |
e7c27a73 | 16162 | struct objfile *objfile = cu->objfile; |
e17a4113 UW |
16163 | enum bfd_endian byte_order = bfd_big_endian (objfile->obfd) ? |
16164 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE; | |
98bfdba5 PA |
16165 | LONGEST l = DW_UNSND (attr); |
16166 | ||
16167 | if (bits < sizeof (*value) * 8) | |
16168 | { | |
16169 | l &= ((LONGEST) 1 << bits) - 1; | |
16170 | *value = l; | |
16171 | } | |
16172 | else if (bits == sizeof (*value) * 8) | |
16173 | *value = l; | |
16174 | else | |
16175 | { | |
16176 | gdb_byte *bytes = obstack_alloc (obstack, bits / 8); | |
16177 | store_unsigned_integer (bytes, bits / 8, byte_order, l); | |
16178 | return bytes; | |
16179 | } | |
16180 | ||
16181 | return NULL; | |
16182 | } | |
16183 | ||
16184 | /* Read a constant value from an attribute. Either set *VALUE, or if | |
16185 | the value does not fit in *VALUE, set *BYTES - either already | |
16186 | allocated on the objfile obstack, or newly allocated on OBSTACK, | |
16187 | or, set *BATON, if we translated the constant to a location | |
16188 | expression. */ | |
16189 | ||
16190 | static void | |
16191 | dwarf2_const_value_attr (struct attribute *attr, struct type *type, | |
16192 | const char *name, struct obstack *obstack, | |
16193 | struct dwarf2_cu *cu, | |
12df843f | 16194 | LONGEST *value, gdb_byte **bytes, |
98bfdba5 PA |
16195 | struct dwarf2_locexpr_baton **baton) |
16196 | { | |
16197 | struct objfile *objfile = cu->objfile; | |
16198 | struct comp_unit_head *cu_header = &cu->header; | |
c906108c | 16199 | struct dwarf_block *blk; |
98bfdba5 PA |
16200 | enum bfd_endian byte_order = (bfd_big_endian (objfile->obfd) ? |
16201 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); | |
16202 | ||
16203 | *value = 0; | |
16204 | *bytes = NULL; | |
16205 | *baton = NULL; | |
c906108c SS |
16206 | |
16207 | switch (attr->form) | |
16208 | { | |
16209 | case DW_FORM_addr: | |
3019eac3 | 16210 | case DW_FORM_GNU_addr_index: |
ac56253d | 16211 | { |
ac56253d TT |
16212 | gdb_byte *data; |
16213 | ||
98bfdba5 PA |
16214 | if (TYPE_LENGTH (type) != cu_header->addr_size) |
16215 | dwarf2_const_value_length_mismatch_complaint (name, | |
ac56253d | 16216 | cu_header->addr_size, |
98bfdba5 | 16217 | TYPE_LENGTH (type)); |
ac56253d TT |
16218 | /* Symbols of this form are reasonably rare, so we just |
16219 | piggyback on the existing location code rather than writing | |
16220 | a new implementation of symbol_computed_ops. */ | |
98bfdba5 PA |
16221 | *baton = obstack_alloc (&objfile->objfile_obstack, |
16222 | sizeof (struct dwarf2_locexpr_baton)); | |
16223 | (*baton)->per_cu = cu->per_cu; | |
16224 | gdb_assert ((*baton)->per_cu); | |
ac56253d | 16225 | |
98bfdba5 PA |
16226 | (*baton)->size = 2 + cu_header->addr_size; |
16227 | data = obstack_alloc (&objfile->objfile_obstack, (*baton)->size); | |
16228 | (*baton)->data = data; | |
ac56253d TT |
16229 | |
16230 | data[0] = DW_OP_addr; | |
16231 | store_unsigned_integer (&data[1], cu_header->addr_size, | |
16232 | byte_order, DW_ADDR (attr)); | |
16233 | data[cu_header->addr_size + 1] = DW_OP_stack_value; | |
ac56253d | 16234 | } |
c906108c | 16235 | break; |
4ac36638 | 16236 | case DW_FORM_string: |
93b5768b | 16237 | case DW_FORM_strp: |
3019eac3 | 16238 | case DW_FORM_GNU_str_index: |
36586728 | 16239 | case DW_FORM_GNU_strp_alt: |
98bfdba5 PA |
16240 | /* DW_STRING is already allocated on the objfile obstack, point |
16241 | directly to it. */ | |
16242 | *bytes = (gdb_byte *) DW_STRING (attr); | |
93b5768b | 16243 | break; |
c906108c SS |
16244 | case DW_FORM_block1: |
16245 | case DW_FORM_block2: | |
16246 | case DW_FORM_block4: | |
16247 | case DW_FORM_block: | |
2dc7f7b3 | 16248 | case DW_FORM_exprloc: |
c906108c | 16249 | blk = DW_BLOCK (attr); |
98bfdba5 PA |
16250 | if (TYPE_LENGTH (type) != blk->size) |
16251 | dwarf2_const_value_length_mismatch_complaint (name, blk->size, | |
16252 | TYPE_LENGTH (type)); | |
16253 | *bytes = blk->data; | |
c906108c | 16254 | break; |
2df3850c JM |
16255 | |
16256 | /* The DW_AT_const_value attributes are supposed to carry the | |
16257 | symbol's value "represented as it would be on the target | |
16258 | architecture." By the time we get here, it's already been | |
16259 | converted to host endianness, so we just need to sign- or | |
16260 | zero-extend it as appropriate. */ | |
16261 | case DW_FORM_data1: | |
3e43a32a MS |
16262 | *bytes = dwarf2_const_value_data (attr, type, name, |
16263 | obstack, cu, value, 8); | |
2df3850c | 16264 | break; |
c906108c | 16265 | case DW_FORM_data2: |
3e43a32a MS |
16266 | *bytes = dwarf2_const_value_data (attr, type, name, |
16267 | obstack, cu, value, 16); | |
2df3850c | 16268 | break; |
c906108c | 16269 | case DW_FORM_data4: |
3e43a32a MS |
16270 | *bytes = dwarf2_const_value_data (attr, type, name, |
16271 | obstack, cu, value, 32); | |
2df3850c | 16272 | break; |
c906108c | 16273 | case DW_FORM_data8: |
3e43a32a MS |
16274 | *bytes = dwarf2_const_value_data (attr, type, name, |
16275 | obstack, cu, value, 64); | |
2df3850c JM |
16276 | break; |
16277 | ||
c906108c | 16278 | case DW_FORM_sdata: |
98bfdba5 | 16279 | *value = DW_SND (attr); |
2df3850c JM |
16280 | break; |
16281 | ||
c906108c | 16282 | case DW_FORM_udata: |
98bfdba5 | 16283 | *value = DW_UNSND (attr); |
c906108c | 16284 | break; |
2df3850c | 16285 | |
c906108c | 16286 | default: |
4d3c2250 | 16287 | complaint (&symfile_complaints, |
e2e0b3e5 | 16288 | _("unsupported const value attribute form: '%s'"), |
4d3c2250 | 16289 | dwarf_form_name (attr->form)); |
98bfdba5 | 16290 | *value = 0; |
c906108c SS |
16291 | break; |
16292 | } | |
16293 | } | |
16294 | ||
2df3850c | 16295 | |
98bfdba5 PA |
16296 | /* Copy constant value from an attribute to a symbol. */ |
16297 | ||
2df3850c | 16298 | static void |
98bfdba5 PA |
16299 | dwarf2_const_value (struct attribute *attr, struct symbol *sym, |
16300 | struct dwarf2_cu *cu) | |
2df3850c | 16301 | { |
98bfdba5 PA |
16302 | struct objfile *objfile = cu->objfile; |
16303 | struct comp_unit_head *cu_header = &cu->header; | |
12df843f | 16304 | LONGEST value; |
98bfdba5 PA |
16305 | gdb_byte *bytes; |
16306 | struct dwarf2_locexpr_baton *baton; | |
2df3850c | 16307 | |
98bfdba5 PA |
16308 | dwarf2_const_value_attr (attr, SYMBOL_TYPE (sym), |
16309 | SYMBOL_PRINT_NAME (sym), | |
16310 | &objfile->objfile_obstack, cu, | |
16311 | &value, &bytes, &baton); | |
2df3850c | 16312 | |
98bfdba5 PA |
16313 | if (baton != NULL) |
16314 | { | |
16315 | SYMBOL_COMPUTED_OPS (sym) = &dwarf2_locexpr_funcs; | |
16316 | SYMBOL_LOCATION_BATON (sym) = baton; | |
16317 | SYMBOL_CLASS (sym) = LOC_COMPUTED; | |
16318 | } | |
16319 | else if (bytes != NULL) | |
16320 | { | |
16321 | SYMBOL_VALUE_BYTES (sym) = bytes; | |
16322 | SYMBOL_CLASS (sym) = LOC_CONST_BYTES; | |
16323 | } | |
16324 | else | |
16325 | { | |
16326 | SYMBOL_VALUE (sym) = value; | |
16327 | SYMBOL_CLASS (sym) = LOC_CONST; | |
16328 | } | |
2df3850c JM |
16329 | } |
16330 | ||
c906108c SS |
16331 | /* Return the type of the die in question using its DW_AT_type attribute. */ |
16332 | ||
16333 | static struct type * | |
e7c27a73 | 16334 | die_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16335 | { |
c906108c | 16336 | struct attribute *type_attr; |
c906108c | 16337 | |
e142c38c | 16338 | type_attr = dwarf2_attr (die, DW_AT_type, cu); |
c906108c SS |
16339 | if (!type_attr) |
16340 | { | |
16341 | /* A missing DW_AT_type represents a void type. */ | |
46bf5051 | 16342 | return objfile_type (cu->objfile)->builtin_void; |
c906108c | 16343 | } |
348e048f | 16344 | |
673bfd45 | 16345 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
16346 | } |
16347 | ||
b4ba55a1 JB |
16348 | /* True iff CU's producer generates GNAT Ada auxiliary information |
16349 | that allows to find parallel types through that information instead | |
16350 | of having to do expensive parallel lookups by type name. */ | |
16351 | ||
16352 | static int | |
16353 | need_gnat_info (struct dwarf2_cu *cu) | |
16354 | { | |
16355 | /* FIXME: brobecker/2010-10-12: As of now, only the AdaCore version | |
16356 | of GNAT produces this auxiliary information, without any indication | |
16357 | that it is produced. Part of enhancing the FSF version of GNAT | |
16358 | to produce that information will be to put in place an indicator | |
16359 | that we can use in order to determine whether the descriptive type | |
16360 | info is available or not. One suggestion that has been made is | |
16361 | to use a new attribute, attached to the CU die. For now, assume | |
16362 | that the descriptive type info is not available. */ | |
16363 | return 0; | |
16364 | } | |
16365 | ||
b4ba55a1 JB |
16366 | /* Return the auxiliary type of the die in question using its |
16367 | DW_AT_GNAT_descriptive_type attribute. Returns NULL if the | |
16368 | attribute is not present. */ | |
16369 | ||
16370 | static struct type * | |
16371 | die_descriptive_type (struct die_info *die, struct dwarf2_cu *cu) | |
16372 | { | |
b4ba55a1 | 16373 | struct attribute *type_attr; |
b4ba55a1 JB |
16374 | |
16375 | type_attr = dwarf2_attr (die, DW_AT_GNAT_descriptive_type, cu); | |
16376 | if (!type_attr) | |
16377 | return NULL; | |
16378 | ||
673bfd45 | 16379 | return lookup_die_type (die, type_attr, cu); |
b4ba55a1 JB |
16380 | } |
16381 | ||
16382 | /* If DIE has a descriptive_type attribute, then set the TYPE's | |
16383 | descriptive type accordingly. */ | |
16384 | ||
16385 | static void | |
16386 | set_descriptive_type (struct type *type, struct die_info *die, | |
16387 | struct dwarf2_cu *cu) | |
16388 | { | |
16389 | struct type *descriptive_type = die_descriptive_type (die, cu); | |
16390 | ||
16391 | if (descriptive_type) | |
16392 | { | |
16393 | ALLOCATE_GNAT_AUX_TYPE (type); | |
16394 | TYPE_DESCRIPTIVE_TYPE (type) = descriptive_type; | |
16395 | } | |
16396 | } | |
16397 | ||
c906108c SS |
16398 | /* Return the containing type of the die in question using its |
16399 | DW_AT_containing_type attribute. */ | |
16400 | ||
16401 | static struct type * | |
e7c27a73 | 16402 | die_containing_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16403 | { |
c906108c | 16404 | struct attribute *type_attr; |
c906108c | 16405 | |
e142c38c | 16406 | type_attr = dwarf2_attr (die, DW_AT_containing_type, cu); |
33ac96f0 JK |
16407 | if (!type_attr) |
16408 | error (_("Dwarf Error: Problem turning containing type into gdb type " | |
16409 | "[in module %s]"), cu->objfile->name); | |
16410 | ||
673bfd45 | 16411 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
16412 | } |
16413 | ||
673bfd45 DE |
16414 | /* Look up the type of DIE in CU using its type attribute ATTR. |
16415 | If there is no type substitute an error marker. */ | |
16416 | ||
c906108c | 16417 | static struct type * |
673bfd45 DE |
16418 | lookup_die_type (struct die_info *die, struct attribute *attr, |
16419 | struct dwarf2_cu *cu) | |
c906108c | 16420 | { |
bb5ed363 | 16421 | struct objfile *objfile = cu->objfile; |
f792889a DJ |
16422 | struct type *this_type; |
16423 | ||
673bfd45 DE |
16424 | /* First see if we have it cached. */ |
16425 | ||
36586728 TT |
16426 | if (attr->form == DW_FORM_GNU_ref_alt) |
16427 | { | |
16428 | struct dwarf2_per_cu_data *per_cu; | |
16429 | sect_offset offset = dwarf2_get_ref_die_offset (attr); | |
16430 | ||
16431 | per_cu = dwarf2_find_containing_comp_unit (offset, 1, cu->objfile); | |
16432 | this_type = get_die_type_at_offset (offset, per_cu); | |
16433 | } | |
16434 | else if (is_ref_attr (attr)) | |
673bfd45 | 16435 | { |
b64f50a1 | 16436 | sect_offset offset = dwarf2_get_ref_die_offset (attr); |
673bfd45 DE |
16437 | |
16438 | this_type = get_die_type_at_offset (offset, cu->per_cu); | |
16439 | } | |
55f1336d | 16440 | else if (attr->form == DW_FORM_ref_sig8) |
673bfd45 DE |
16441 | { |
16442 | struct signatured_type *sig_type = DW_SIGNATURED_TYPE (attr); | |
673bfd45 DE |
16443 | |
16444 | /* sig_type will be NULL if the signatured type is missing from | |
16445 | the debug info. */ | |
16446 | if (sig_type == NULL) | |
16447 | error (_("Dwarf Error: Cannot find signatured DIE referenced from DIE " | |
16448 | "at 0x%x [in module %s]"), | |
b64f50a1 | 16449 | die->offset.sect_off, objfile->name); |
673bfd45 | 16450 | |
3019eac3 DE |
16451 | gdb_assert (sig_type->per_cu.is_debug_types); |
16452 | /* If we haven't filled in type_offset_in_section yet, then we | |
16453 | haven't read the type in yet. */ | |
16454 | this_type = NULL; | |
16455 | if (sig_type->type_offset_in_section.sect_off != 0) | |
16456 | { | |
16457 | this_type = | |
16458 | get_die_type_at_offset (sig_type->type_offset_in_section, | |
16459 | &sig_type->per_cu); | |
16460 | } | |
673bfd45 DE |
16461 | } |
16462 | else | |
16463 | { | |
16464 | dump_die_for_error (die); | |
16465 | error (_("Dwarf Error: Bad type attribute %s [in module %s]"), | |
bb5ed363 | 16466 | dwarf_attr_name (attr->name), objfile->name); |
673bfd45 DE |
16467 | } |
16468 | ||
16469 | /* If not cached we need to read it in. */ | |
16470 | ||
16471 | if (this_type == NULL) | |
16472 | { | |
16473 | struct die_info *type_die; | |
16474 | struct dwarf2_cu *type_cu = cu; | |
16475 | ||
16476 | type_die = follow_die_ref_or_sig (die, attr, &type_cu); | |
3019eac3 DE |
16477 | /* If we found the type now, it's probably because the type came |
16478 | from an inter-CU reference and the type's CU got expanded before | |
16479 | ours. */ | |
16480 | this_type = get_die_type (type_die, type_cu); | |
16481 | if (this_type == NULL) | |
16482 | this_type = read_type_die_1 (type_die, type_cu); | |
673bfd45 DE |
16483 | } |
16484 | ||
16485 | /* If we still don't have a type use an error marker. */ | |
16486 | ||
16487 | if (this_type == NULL) | |
c906108c | 16488 | { |
b00fdb78 TT |
16489 | char *message, *saved; |
16490 | ||
16491 | /* read_type_die already issued a complaint. */ | |
16492 | message = xstrprintf (_("<unknown type in %s, CU 0x%x, DIE 0x%x>"), | |
bb5ed363 | 16493 | objfile->name, |
b64f50a1 JK |
16494 | cu->header.offset.sect_off, |
16495 | die->offset.sect_off); | |
bb5ed363 | 16496 | saved = obstack_copy0 (&objfile->objfile_obstack, |
b00fdb78 TT |
16497 | message, strlen (message)); |
16498 | xfree (message); | |
16499 | ||
bb5ed363 | 16500 | this_type = init_type (TYPE_CODE_ERROR, 0, 0, saved, objfile); |
c906108c | 16501 | } |
673bfd45 | 16502 | |
f792889a | 16503 | return this_type; |
c906108c SS |
16504 | } |
16505 | ||
673bfd45 DE |
16506 | /* Return the type in DIE, CU. |
16507 | Returns NULL for invalid types. | |
16508 | ||
16509 | This first does a lookup in the appropriate type_hash table, | |
16510 | and only reads the die in if necessary. | |
16511 | ||
16512 | NOTE: This can be called when reading in partial or full symbols. */ | |
16513 | ||
f792889a | 16514 | static struct type * |
e7c27a73 | 16515 | read_type_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16516 | { |
f792889a DJ |
16517 | struct type *this_type; |
16518 | ||
16519 | this_type = get_die_type (die, cu); | |
16520 | if (this_type) | |
16521 | return this_type; | |
16522 | ||
673bfd45 DE |
16523 | return read_type_die_1 (die, cu); |
16524 | } | |
16525 | ||
16526 | /* Read the type in DIE, CU. | |
16527 | Returns NULL for invalid types. */ | |
16528 | ||
16529 | static struct type * | |
16530 | read_type_die_1 (struct die_info *die, struct dwarf2_cu *cu) | |
16531 | { | |
16532 | struct type *this_type = NULL; | |
16533 | ||
c906108c SS |
16534 | switch (die->tag) |
16535 | { | |
16536 | case DW_TAG_class_type: | |
680b30c7 | 16537 | case DW_TAG_interface_type: |
c906108c SS |
16538 | case DW_TAG_structure_type: |
16539 | case DW_TAG_union_type: | |
f792889a | 16540 | this_type = read_structure_type (die, cu); |
c906108c SS |
16541 | break; |
16542 | case DW_TAG_enumeration_type: | |
f792889a | 16543 | this_type = read_enumeration_type (die, cu); |
c906108c SS |
16544 | break; |
16545 | case DW_TAG_subprogram: | |
16546 | case DW_TAG_subroutine_type: | |
edb3359d | 16547 | case DW_TAG_inlined_subroutine: |
f792889a | 16548 | this_type = read_subroutine_type (die, cu); |
c906108c SS |
16549 | break; |
16550 | case DW_TAG_array_type: | |
f792889a | 16551 | this_type = read_array_type (die, cu); |
c906108c | 16552 | break; |
72019c9c | 16553 | case DW_TAG_set_type: |
f792889a | 16554 | this_type = read_set_type (die, cu); |
72019c9c | 16555 | break; |
c906108c | 16556 | case DW_TAG_pointer_type: |
f792889a | 16557 | this_type = read_tag_pointer_type (die, cu); |
c906108c SS |
16558 | break; |
16559 | case DW_TAG_ptr_to_member_type: | |
f792889a | 16560 | this_type = read_tag_ptr_to_member_type (die, cu); |
c906108c SS |
16561 | break; |
16562 | case DW_TAG_reference_type: | |
f792889a | 16563 | this_type = read_tag_reference_type (die, cu); |
c906108c SS |
16564 | break; |
16565 | case DW_TAG_const_type: | |
f792889a | 16566 | this_type = read_tag_const_type (die, cu); |
c906108c SS |
16567 | break; |
16568 | case DW_TAG_volatile_type: | |
f792889a | 16569 | this_type = read_tag_volatile_type (die, cu); |
c906108c | 16570 | break; |
06d66ee9 TT |
16571 | case DW_TAG_restrict_type: |
16572 | this_type = read_tag_restrict_type (die, cu); | |
16573 | break; | |
c906108c | 16574 | case DW_TAG_string_type: |
f792889a | 16575 | this_type = read_tag_string_type (die, cu); |
c906108c SS |
16576 | break; |
16577 | case DW_TAG_typedef: | |
f792889a | 16578 | this_type = read_typedef (die, cu); |
c906108c | 16579 | break; |
a02abb62 | 16580 | case DW_TAG_subrange_type: |
f792889a | 16581 | this_type = read_subrange_type (die, cu); |
a02abb62 | 16582 | break; |
c906108c | 16583 | case DW_TAG_base_type: |
f792889a | 16584 | this_type = read_base_type (die, cu); |
c906108c | 16585 | break; |
81a17f79 | 16586 | case DW_TAG_unspecified_type: |
f792889a | 16587 | this_type = read_unspecified_type (die, cu); |
81a17f79 | 16588 | break; |
0114d602 DJ |
16589 | case DW_TAG_namespace: |
16590 | this_type = read_namespace_type (die, cu); | |
16591 | break; | |
f55ee35c JK |
16592 | case DW_TAG_module: |
16593 | this_type = read_module_type (die, cu); | |
16594 | break; | |
c906108c | 16595 | default: |
3e43a32a MS |
16596 | complaint (&symfile_complaints, |
16597 | _("unexpected tag in read_type_die: '%s'"), | |
4d3c2250 | 16598 | dwarf_tag_name (die->tag)); |
c906108c SS |
16599 | break; |
16600 | } | |
63d06c5c | 16601 | |
f792889a | 16602 | return this_type; |
63d06c5c DC |
16603 | } |
16604 | ||
abc72ce4 DE |
16605 | /* See if we can figure out if the class lives in a namespace. We do |
16606 | this by looking for a member function; its demangled name will | |
16607 | contain namespace info, if there is any. | |
16608 | Return the computed name or NULL. | |
16609 | Space for the result is allocated on the objfile's obstack. | |
16610 | This is the full-die version of guess_partial_die_structure_name. | |
16611 | In this case we know DIE has no useful parent. */ | |
16612 | ||
16613 | static char * | |
16614 | guess_full_die_structure_name (struct die_info *die, struct dwarf2_cu *cu) | |
16615 | { | |
16616 | struct die_info *spec_die; | |
16617 | struct dwarf2_cu *spec_cu; | |
16618 | struct die_info *child; | |
16619 | ||
16620 | spec_cu = cu; | |
16621 | spec_die = die_specification (die, &spec_cu); | |
16622 | if (spec_die != NULL) | |
16623 | { | |
16624 | die = spec_die; | |
16625 | cu = spec_cu; | |
16626 | } | |
16627 | ||
16628 | for (child = die->child; | |
16629 | child != NULL; | |
16630 | child = child->sibling) | |
16631 | { | |
16632 | if (child->tag == DW_TAG_subprogram) | |
16633 | { | |
16634 | struct attribute *attr; | |
16635 | ||
16636 | attr = dwarf2_attr (child, DW_AT_linkage_name, cu); | |
16637 | if (attr == NULL) | |
16638 | attr = dwarf2_attr (child, DW_AT_MIPS_linkage_name, cu); | |
16639 | if (attr != NULL) | |
16640 | { | |
16641 | char *actual_name | |
16642 | = language_class_name_from_physname (cu->language_defn, | |
16643 | DW_STRING (attr)); | |
16644 | char *name = NULL; | |
16645 | ||
16646 | if (actual_name != NULL) | |
16647 | { | |
15d034d0 | 16648 | const char *die_name = dwarf2_name (die, cu); |
abc72ce4 DE |
16649 | |
16650 | if (die_name != NULL | |
16651 | && strcmp (die_name, actual_name) != 0) | |
16652 | { | |
16653 | /* Strip off the class name from the full name. | |
16654 | We want the prefix. */ | |
16655 | int die_name_len = strlen (die_name); | |
16656 | int actual_name_len = strlen (actual_name); | |
16657 | ||
16658 | /* Test for '::' as a sanity check. */ | |
16659 | if (actual_name_len > die_name_len + 2 | |
3e43a32a MS |
16660 | && actual_name[actual_name_len |
16661 | - die_name_len - 1] == ':') | |
abc72ce4 | 16662 | name = |
10f0c4bb TT |
16663 | obstack_copy0 (&cu->objfile->objfile_obstack, |
16664 | actual_name, | |
16665 | actual_name_len - die_name_len - 2); | |
abc72ce4 DE |
16666 | } |
16667 | } | |
16668 | xfree (actual_name); | |
16669 | return name; | |
16670 | } | |
16671 | } | |
16672 | } | |
16673 | ||
16674 | return NULL; | |
16675 | } | |
16676 | ||
96408a79 SA |
16677 | /* GCC might emit a nameless typedef that has a linkage name. Determine the |
16678 | prefix part in such case. See | |
16679 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
16680 | ||
16681 | static char * | |
16682 | anonymous_struct_prefix (struct die_info *die, struct dwarf2_cu *cu) | |
16683 | { | |
16684 | struct attribute *attr; | |
16685 | char *base; | |
16686 | ||
16687 | if (die->tag != DW_TAG_class_type && die->tag != DW_TAG_interface_type | |
16688 | && die->tag != DW_TAG_structure_type && die->tag != DW_TAG_union_type) | |
16689 | return NULL; | |
16690 | ||
16691 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
16692 | if (attr != NULL && DW_STRING (attr) != NULL) | |
16693 | return NULL; | |
16694 | ||
16695 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
16696 | if (attr == NULL) | |
16697 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
16698 | if (attr == NULL || DW_STRING (attr) == NULL) | |
16699 | return NULL; | |
16700 | ||
16701 | /* dwarf2_name had to be already called. */ | |
16702 | gdb_assert (DW_STRING_IS_CANONICAL (attr)); | |
16703 | ||
16704 | /* Strip the base name, keep any leading namespaces/classes. */ | |
16705 | base = strrchr (DW_STRING (attr), ':'); | |
16706 | if (base == NULL || base == DW_STRING (attr) || base[-1] != ':') | |
16707 | return ""; | |
16708 | ||
10f0c4bb TT |
16709 | return obstack_copy0 (&cu->objfile->objfile_obstack, |
16710 | DW_STRING (attr), &base[-1] - DW_STRING (attr)); | |
96408a79 SA |
16711 | } |
16712 | ||
fdde2d81 | 16713 | /* Return the name of the namespace/class that DIE is defined within, |
0114d602 | 16714 | or "" if we can't tell. The caller should not xfree the result. |
fdde2d81 | 16715 | |
0114d602 DJ |
16716 | For example, if we're within the method foo() in the following |
16717 | code: | |
16718 | ||
16719 | namespace N { | |
16720 | class C { | |
16721 | void foo () { | |
16722 | } | |
16723 | }; | |
16724 | } | |
16725 | ||
16726 | then determine_prefix on foo's die will return "N::C". */ | |
fdde2d81 | 16727 | |
0d5cff50 | 16728 | static const char * |
e142c38c | 16729 | determine_prefix (struct die_info *die, struct dwarf2_cu *cu) |
63d06c5c | 16730 | { |
0114d602 DJ |
16731 | struct die_info *parent, *spec_die; |
16732 | struct dwarf2_cu *spec_cu; | |
16733 | struct type *parent_type; | |
96408a79 | 16734 | char *retval; |
63d06c5c | 16735 | |
f55ee35c JK |
16736 | if (cu->language != language_cplus && cu->language != language_java |
16737 | && cu->language != language_fortran) | |
0114d602 DJ |
16738 | return ""; |
16739 | ||
96408a79 SA |
16740 | retval = anonymous_struct_prefix (die, cu); |
16741 | if (retval) | |
16742 | return retval; | |
16743 | ||
0114d602 DJ |
16744 | /* We have to be careful in the presence of DW_AT_specification. |
16745 | For example, with GCC 3.4, given the code | |
16746 | ||
16747 | namespace N { | |
16748 | void foo() { | |
16749 | // Definition of N::foo. | |
16750 | } | |
16751 | } | |
16752 | ||
16753 | then we'll have a tree of DIEs like this: | |
16754 | ||
16755 | 1: DW_TAG_compile_unit | |
16756 | 2: DW_TAG_namespace // N | |
16757 | 3: DW_TAG_subprogram // declaration of N::foo | |
16758 | 4: DW_TAG_subprogram // definition of N::foo | |
16759 | DW_AT_specification // refers to die #3 | |
16760 | ||
16761 | Thus, when processing die #4, we have to pretend that we're in | |
16762 | the context of its DW_AT_specification, namely the contex of die | |
16763 | #3. */ | |
16764 | spec_cu = cu; | |
16765 | spec_die = die_specification (die, &spec_cu); | |
16766 | if (spec_die == NULL) | |
16767 | parent = die->parent; | |
16768 | else | |
63d06c5c | 16769 | { |
0114d602 DJ |
16770 | parent = spec_die->parent; |
16771 | cu = spec_cu; | |
63d06c5c | 16772 | } |
0114d602 DJ |
16773 | |
16774 | if (parent == NULL) | |
16775 | return ""; | |
98bfdba5 PA |
16776 | else if (parent->building_fullname) |
16777 | { | |
16778 | const char *name; | |
16779 | const char *parent_name; | |
16780 | ||
16781 | /* It has been seen on RealView 2.2 built binaries, | |
16782 | DW_TAG_template_type_param types actually _defined_ as | |
16783 | children of the parent class: | |
16784 | ||
16785 | enum E {}; | |
16786 | template class <class Enum> Class{}; | |
16787 | Class<enum E> class_e; | |
16788 | ||
16789 | 1: DW_TAG_class_type (Class) | |
16790 | 2: DW_TAG_enumeration_type (E) | |
16791 | 3: DW_TAG_enumerator (enum1:0) | |
16792 | 3: DW_TAG_enumerator (enum2:1) | |
16793 | ... | |
16794 | 2: DW_TAG_template_type_param | |
16795 | DW_AT_type DW_FORM_ref_udata (E) | |
16796 | ||
16797 | Besides being broken debug info, it can put GDB into an | |
16798 | infinite loop. Consider: | |
16799 | ||
16800 | When we're building the full name for Class<E>, we'll start | |
16801 | at Class, and go look over its template type parameters, | |
16802 | finding E. We'll then try to build the full name of E, and | |
16803 | reach here. We're now trying to build the full name of E, | |
16804 | and look over the parent DIE for containing scope. In the | |
16805 | broken case, if we followed the parent DIE of E, we'd again | |
16806 | find Class, and once again go look at its template type | |
16807 | arguments, etc., etc. Simply don't consider such parent die | |
16808 | as source-level parent of this die (it can't be, the language | |
16809 | doesn't allow it), and break the loop here. */ | |
16810 | name = dwarf2_name (die, cu); | |
16811 | parent_name = dwarf2_name (parent, cu); | |
16812 | complaint (&symfile_complaints, | |
16813 | _("template param type '%s' defined within parent '%s'"), | |
16814 | name ? name : "<unknown>", | |
16815 | parent_name ? parent_name : "<unknown>"); | |
16816 | return ""; | |
16817 | } | |
63d06c5c | 16818 | else |
0114d602 DJ |
16819 | switch (parent->tag) |
16820 | { | |
63d06c5c | 16821 | case DW_TAG_namespace: |
0114d602 | 16822 | parent_type = read_type_die (parent, cu); |
acebe513 UW |
16823 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
16824 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
16825 | Work around this problem here. */ | |
16826 | if (cu->language == language_cplus | |
16827 | && strcmp (TYPE_TAG_NAME (parent_type), "::") == 0) | |
16828 | return ""; | |
0114d602 DJ |
16829 | /* We give a name to even anonymous namespaces. */ |
16830 | return TYPE_TAG_NAME (parent_type); | |
63d06c5c | 16831 | case DW_TAG_class_type: |
680b30c7 | 16832 | case DW_TAG_interface_type: |
63d06c5c | 16833 | case DW_TAG_structure_type: |
0114d602 | 16834 | case DW_TAG_union_type: |
f55ee35c | 16835 | case DW_TAG_module: |
0114d602 DJ |
16836 | parent_type = read_type_die (parent, cu); |
16837 | if (TYPE_TAG_NAME (parent_type) != NULL) | |
16838 | return TYPE_TAG_NAME (parent_type); | |
16839 | else | |
16840 | /* An anonymous structure is only allowed non-static data | |
16841 | members; no typedefs, no member functions, et cetera. | |
16842 | So it does not need a prefix. */ | |
16843 | return ""; | |
abc72ce4 | 16844 | case DW_TAG_compile_unit: |
95554aad | 16845 | case DW_TAG_partial_unit: |
abc72ce4 DE |
16846 | /* gcc-4.5 -gdwarf-4 can drop the enclosing namespace. Cope. */ |
16847 | if (cu->language == language_cplus | |
8b70b953 | 16848 | && !VEC_empty (dwarf2_section_info_def, dwarf2_per_objfile->types) |
abc72ce4 DE |
16849 | && die->child != NULL |
16850 | && (die->tag == DW_TAG_class_type | |
16851 | || die->tag == DW_TAG_structure_type | |
16852 | || die->tag == DW_TAG_union_type)) | |
16853 | { | |
16854 | char *name = guess_full_die_structure_name (die, cu); | |
16855 | if (name != NULL) | |
16856 | return name; | |
16857 | } | |
16858 | return ""; | |
63d06c5c | 16859 | default: |
8176b9b8 | 16860 | return determine_prefix (parent, cu); |
63d06c5c | 16861 | } |
63d06c5c DC |
16862 | } |
16863 | ||
3e43a32a MS |
16864 | /* Return a newly-allocated string formed by concatenating PREFIX and SUFFIX |
16865 | with appropriate separator. If PREFIX or SUFFIX is NULL or empty, then | |
16866 | simply copy the SUFFIX or PREFIX, respectively. If OBS is non-null, perform | |
16867 | an obconcat, otherwise allocate storage for the result. The CU argument is | |
16868 | used to determine the language and hence, the appropriate separator. */ | |
987504bb | 16869 | |
f55ee35c | 16870 | #define MAX_SEP_LEN 7 /* strlen ("__") + strlen ("_MOD_") */ |
63d06c5c DC |
16871 | |
16872 | static char * | |
f55ee35c JK |
16873 | typename_concat (struct obstack *obs, const char *prefix, const char *suffix, |
16874 | int physname, struct dwarf2_cu *cu) | |
63d06c5c | 16875 | { |
f55ee35c | 16876 | const char *lead = ""; |
5c315b68 | 16877 | const char *sep; |
63d06c5c | 16878 | |
3e43a32a MS |
16879 | if (suffix == NULL || suffix[0] == '\0' |
16880 | || prefix == NULL || prefix[0] == '\0') | |
987504bb JJ |
16881 | sep = ""; |
16882 | else if (cu->language == language_java) | |
16883 | sep = "."; | |
f55ee35c JK |
16884 | else if (cu->language == language_fortran && physname) |
16885 | { | |
16886 | /* This is gfortran specific mangling. Normally DW_AT_linkage_name or | |
16887 | DW_AT_MIPS_linkage_name is preferred and used instead. */ | |
16888 | ||
16889 | lead = "__"; | |
16890 | sep = "_MOD_"; | |
16891 | } | |
987504bb JJ |
16892 | else |
16893 | sep = "::"; | |
63d06c5c | 16894 | |
6dd47d34 DE |
16895 | if (prefix == NULL) |
16896 | prefix = ""; | |
16897 | if (suffix == NULL) | |
16898 | suffix = ""; | |
16899 | ||
987504bb JJ |
16900 | if (obs == NULL) |
16901 | { | |
3e43a32a MS |
16902 | char *retval |
16903 | = xmalloc (strlen (prefix) + MAX_SEP_LEN + strlen (suffix) + 1); | |
9a619af0 | 16904 | |
f55ee35c JK |
16905 | strcpy (retval, lead); |
16906 | strcat (retval, prefix); | |
6dd47d34 DE |
16907 | strcat (retval, sep); |
16908 | strcat (retval, suffix); | |
63d06c5c DC |
16909 | return retval; |
16910 | } | |
987504bb JJ |
16911 | else |
16912 | { | |
16913 | /* We have an obstack. */ | |
f55ee35c | 16914 | return obconcat (obs, lead, prefix, sep, suffix, (char *) NULL); |
987504bb | 16915 | } |
63d06c5c DC |
16916 | } |
16917 | ||
c906108c SS |
16918 | /* Return sibling of die, NULL if no sibling. */ |
16919 | ||
f9aca02d | 16920 | static struct die_info * |
fba45db2 | 16921 | sibling_die (struct die_info *die) |
c906108c | 16922 | { |
639d11d3 | 16923 | return die->sibling; |
c906108c SS |
16924 | } |
16925 | ||
71c25dea TT |
16926 | /* Get name of a die, return NULL if not found. */ |
16927 | ||
15d034d0 TT |
16928 | static const char * |
16929 | dwarf2_canonicalize_name (const char *name, struct dwarf2_cu *cu, | |
71c25dea TT |
16930 | struct obstack *obstack) |
16931 | { | |
16932 | if (name && cu->language == language_cplus) | |
16933 | { | |
16934 | char *canon_name = cp_canonicalize_string (name); | |
16935 | ||
16936 | if (canon_name != NULL) | |
16937 | { | |
16938 | if (strcmp (canon_name, name) != 0) | |
10f0c4bb | 16939 | name = obstack_copy0 (obstack, canon_name, strlen (canon_name)); |
71c25dea TT |
16940 | xfree (canon_name); |
16941 | } | |
16942 | } | |
16943 | ||
16944 | return name; | |
c906108c SS |
16945 | } |
16946 | ||
9219021c DC |
16947 | /* Get name of a die, return NULL if not found. */ |
16948 | ||
15d034d0 | 16949 | static const char * |
e142c38c | 16950 | dwarf2_name (struct die_info *die, struct dwarf2_cu *cu) |
9219021c DC |
16951 | { |
16952 | struct attribute *attr; | |
16953 | ||
e142c38c | 16954 | attr = dwarf2_attr (die, DW_AT_name, cu); |
53832f31 TT |
16955 | if ((!attr || !DW_STRING (attr)) |
16956 | && die->tag != DW_TAG_class_type | |
16957 | && die->tag != DW_TAG_interface_type | |
16958 | && die->tag != DW_TAG_structure_type | |
16959 | && die->tag != DW_TAG_union_type) | |
71c25dea TT |
16960 | return NULL; |
16961 | ||
16962 | switch (die->tag) | |
16963 | { | |
16964 | case DW_TAG_compile_unit: | |
95554aad | 16965 | case DW_TAG_partial_unit: |
71c25dea TT |
16966 | /* Compilation units have a DW_AT_name that is a filename, not |
16967 | a source language identifier. */ | |
16968 | case DW_TAG_enumeration_type: | |
16969 | case DW_TAG_enumerator: | |
16970 | /* These tags always have simple identifiers already; no need | |
16971 | to canonicalize them. */ | |
16972 | return DW_STRING (attr); | |
907af001 | 16973 | |
418835cc KS |
16974 | case DW_TAG_subprogram: |
16975 | /* Java constructors will all be named "<init>", so return | |
16976 | the class name when we see this special case. */ | |
16977 | if (cu->language == language_java | |
16978 | && DW_STRING (attr) != NULL | |
16979 | && strcmp (DW_STRING (attr), "<init>") == 0) | |
16980 | { | |
16981 | struct dwarf2_cu *spec_cu = cu; | |
16982 | struct die_info *spec_die; | |
16983 | ||
16984 | /* GCJ will output '<init>' for Java constructor names. | |
16985 | For this special case, return the name of the parent class. */ | |
16986 | ||
16987 | /* GCJ may output suprogram DIEs with AT_specification set. | |
16988 | If so, use the name of the specified DIE. */ | |
16989 | spec_die = die_specification (die, &spec_cu); | |
16990 | if (spec_die != NULL) | |
16991 | return dwarf2_name (spec_die, spec_cu); | |
16992 | ||
16993 | do | |
16994 | { | |
16995 | die = die->parent; | |
16996 | if (die->tag == DW_TAG_class_type) | |
16997 | return dwarf2_name (die, cu); | |
16998 | } | |
95554aad TT |
16999 | while (die->tag != DW_TAG_compile_unit |
17000 | && die->tag != DW_TAG_partial_unit); | |
418835cc | 17001 | } |
907af001 UW |
17002 | break; |
17003 | ||
17004 | case DW_TAG_class_type: | |
17005 | case DW_TAG_interface_type: | |
17006 | case DW_TAG_structure_type: | |
17007 | case DW_TAG_union_type: | |
17008 | /* Some GCC versions emit spurious DW_AT_name attributes for unnamed | |
17009 | structures or unions. These were of the form "._%d" in GCC 4.1, | |
17010 | or simply "<anonymous struct>" or "<anonymous union>" in GCC 4.3 | |
17011 | and GCC 4.4. We work around this problem by ignoring these. */ | |
53832f31 TT |
17012 | if (attr && DW_STRING (attr) |
17013 | && (strncmp (DW_STRING (attr), "._", 2) == 0 | |
17014 | || strncmp (DW_STRING (attr), "<anonymous", 10) == 0)) | |
907af001 | 17015 | return NULL; |
53832f31 TT |
17016 | |
17017 | /* GCC might emit a nameless typedef that has a linkage name. See | |
17018 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
17019 | if (!attr || DW_STRING (attr) == NULL) | |
17020 | { | |
df5c6c50 | 17021 | char *demangled = NULL; |
53832f31 TT |
17022 | |
17023 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
17024 | if (attr == NULL) | |
17025 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
17026 | ||
17027 | if (attr == NULL || DW_STRING (attr) == NULL) | |
17028 | return NULL; | |
17029 | ||
df5c6c50 JK |
17030 | /* Avoid demangling DW_STRING (attr) the second time on a second |
17031 | call for the same DIE. */ | |
17032 | if (!DW_STRING_IS_CANONICAL (attr)) | |
17033 | demangled = cplus_demangle (DW_STRING (attr), DMGL_TYPES); | |
53832f31 TT |
17034 | |
17035 | if (demangled) | |
17036 | { | |
96408a79 SA |
17037 | char *base; |
17038 | ||
53832f31 | 17039 | /* FIXME: we already did this for the partial symbol... */ |
10f0c4bb TT |
17040 | DW_STRING (attr) = obstack_copy0 (&cu->objfile->objfile_obstack, |
17041 | demangled, strlen (demangled)); | |
53832f31 TT |
17042 | DW_STRING_IS_CANONICAL (attr) = 1; |
17043 | xfree (demangled); | |
96408a79 SA |
17044 | |
17045 | /* Strip any leading namespaces/classes, keep only the base name. | |
17046 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
17047 | base = strrchr (DW_STRING (attr), ':'); | |
17048 | if (base && base > DW_STRING (attr) && base[-1] == ':') | |
17049 | return &base[1]; | |
17050 | else | |
17051 | return DW_STRING (attr); | |
53832f31 TT |
17052 | } |
17053 | } | |
907af001 UW |
17054 | break; |
17055 | ||
71c25dea | 17056 | default: |
907af001 UW |
17057 | break; |
17058 | } | |
17059 | ||
17060 | if (!DW_STRING_IS_CANONICAL (attr)) | |
17061 | { | |
17062 | DW_STRING (attr) | |
17063 | = dwarf2_canonicalize_name (DW_STRING (attr), cu, | |
17064 | &cu->objfile->objfile_obstack); | |
17065 | DW_STRING_IS_CANONICAL (attr) = 1; | |
71c25dea | 17066 | } |
907af001 | 17067 | return DW_STRING (attr); |
9219021c DC |
17068 | } |
17069 | ||
17070 | /* Return the die that this die in an extension of, or NULL if there | |
f2f0e013 DJ |
17071 | is none. *EXT_CU is the CU containing DIE on input, and the CU |
17072 | containing the return value on output. */ | |
9219021c DC |
17073 | |
17074 | static struct die_info * | |
f2f0e013 | 17075 | dwarf2_extension (struct die_info *die, struct dwarf2_cu **ext_cu) |
9219021c DC |
17076 | { |
17077 | struct attribute *attr; | |
9219021c | 17078 | |
f2f0e013 | 17079 | attr = dwarf2_attr (die, DW_AT_extension, *ext_cu); |
9219021c DC |
17080 | if (attr == NULL) |
17081 | return NULL; | |
17082 | ||
f2f0e013 | 17083 | return follow_die_ref (die, attr, ext_cu); |
9219021c DC |
17084 | } |
17085 | ||
c906108c SS |
17086 | /* Convert a DIE tag into its string name. */ |
17087 | ||
f39c6ffd | 17088 | static const char * |
aa1ee363 | 17089 | dwarf_tag_name (unsigned tag) |
c906108c | 17090 | { |
f39c6ffd TT |
17091 | const char *name = get_DW_TAG_name (tag); |
17092 | ||
17093 | if (name == NULL) | |
17094 | return "DW_TAG_<unknown>"; | |
17095 | ||
17096 | return name; | |
c906108c SS |
17097 | } |
17098 | ||
17099 | /* Convert a DWARF attribute code into its string name. */ | |
17100 | ||
f39c6ffd | 17101 | static const char * |
aa1ee363 | 17102 | dwarf_attr_name (unsigned attr) |
c906108c | 17103 | { |
f39c6ffd TT |
17104 | const char *name; |
17105 | ||
c764a876 | 17106 | #ifdef MIPS /* collides with DW_AT_HP_block_index */ |
f39c6ffd TT |
17107 | if (attr == DW_AT_MIPS_fde) |
17108 | return "DW_AT_MIPS_fde"; | |
17109 | #else | |
17110 | if (attr == DW_AT_HP_block_index) | |
17111 | return "DW_AT_HP_block_index"; | |
c764a876 | 17112 | #endif |
f39c6ffd TT |
17113 | |
17114 | name = get_DW_AT_name (attr); | |
17115 | ||
17116 | if (name == NULL) | |
17117 | return "DW_AT_<unknown>"; | |
17118 | ||
17119 | return name; | |
c906108c SS |
17120 | } |
17121 | ||
17122 | /* Convert a DWARF value form code into its string name. */ | |
17123 | ||
f39c6ffd | 17124 | static const char * |
aa1ee363 | 17125 | dwarf_form_name (unsigned form) |
c906108c | 17126 | { |
f39c6ffd TT |
17127 | const char *name = get_DW_FORM_name (form); |
17128 | ||
17129 | if (name == NULL) | |
17130 | return "DW_FORM_<unknown>"; | |
17131 | ||
17132 | return name; | |
c906108c SS |
17133 | } |
17134 | ||
17135 | static char * | |
fba45db2 | 17136 | dwarf_bool_name (unsigned mybool) |
c906108c SS |
17137 | { |
17138 | if (mybool) | |
17139 | return "TRUE"; | |
17140 | else | |
17141 | return "FALSE"; | |
17142 | } | |
17143 | ||
17144 | /* Convert a DWARF type code into its string name. */ | |
17145 | ||
f39c6ffd | 17146 | static const char * |
aa1ee363 | 17147 | dwarf_type_encoding_name (unsigned enc) |
c906108c | 17148 | { |
f39c6ffd | 17149 | const char *name = get_DW_ATE_name (enc); |
c906108c | 17150 | |
f39c6ffd TT |
17151 | if (name == NULL) |
17152 | return "DW_ATE_<unknown>"; | |
c906108c | 17153 | |
f39c6ffd | 17154 | return name; |
c906108c | 17155 | } |
c906108c | 17156 | |
f9aca02d | 17157 | static void |
d97bc12b | 17158 | dump_die_shallow (struct ui_file *f, int indent, struct die_info *die) |
c906108c SS |
17159 | { |
17160 | unsigned int i; | |
17161 | ||
d97bc12b DE |
17162 | print_spaces (indent, f); |
17163 | fprintf_unfiltered (f, "Die: %s (abbrev %d, offset 0x%x)\n", | |
b64f50a1 | 17164 | dwarf_tag_name (die->tag), die->abbrev, die->offset.sect_off); |
d97bc12b DE |
17165 | |
17166 | if (die->parent != NULL) | |
17167 | { | |
17168 | print_spaces (indent, f); | |
17169 | fprintf_unfiltered (f, " parent at offset: 0x%x\n", | |
b64f50a1 | 17170 | die->parent->offset.sect_off); |
d97bc12b DE |
17171 | } |
17172 | ||
17173 | print_spaces (indent, f); | |
17174 | fprintf_unfiltered (f, " has children: %s\n", | |
639d11d3 | 17175 | dwarf_bool_name (die->child != NULL)); |
c906108c | 17176 | |
d97bc12b DE |
17177 | print_spaces (indent, f); |
17178 | fprintf_unfiltered (f, " attributes:\n"); | |
17179 | ||
c906108c SS |
17180 | for (i = 0; i < die->num_attrs; ++i) |
17181 | { | |
d97bc12b DE |
17182 | print_spaces (indent, f); |
17183 | fprintf_unfiltered (f, " %s (%s) ", | |
c906108c SS |
17184 | dwarf_attr_name (die->attrs[i].name), |
17185 | dwarf_form_name (die->attrs[i].form)); | |
d97bc12b | 17186 | |
c906108c SS |
17187 | switch (die->attrs[i].form) |
17188 | { | |
c906108c | 17189 | case DW_FORM_addr: |
3019eac3 | 17190 | case DW_FORM_GNU_addr_index: |
d97bc12b | 17191 | fprintf_unfiltered (f, "address: "); |
5af949e3 | 17192 | fputs_filtered (hex_string (DW_ADDR (&die->attrs[i])), f); |
c906108c SS |
17193 | break; |
17194 | case DW_FORM_block2: | |
17195 | case DW_FORM_block4: | |
17196 | case DW_FORM_block: | |
17197 | case DW_FORM_block1: | |
56eb65bd SP |
17198 | fprintf_unfiltered (f, "block: size %s", |
17199 | pulongest (DW_BLOCK (&die->attrs[i])->size)); | |
c906108c | 17200 | break; |
2dc7f7b3 | 17201 | case DW_FORM_exprloc: |
56eb65bd SP |
17202 | fprintf_unfiltered (f, "expression: size %s", |
17203 | pulongest (DW_BLOCK (&die->attrs[i])->size)); | |
2dc7f7b3 | 17204 | break; |
4568ecf9 DE |
17205 | case DW_FORM_ref_addr: |
17206 | fprintf_unfiltered (f, "ref address: "); | |
17207 | fputs_filtered (hex_string (DW_UNSND (&die->attrs[i])), f); | |
17208 | break; | |
36586728 TT |
17209 | case DW_FORM_GNU_ref_alt: |
17210 | fprintf_unfiltered (f, "alt ref address: "); | |
17211 | fputs_filtered (hex_string (DW_UNSND (&die->attrs[i])), f); | |
17212 | break; | |
10b3939b DJ |
17213 | case DW_FORM_ref1: |
17214 | case DW_FORM_ref2: | |
17215 | case DW_FORM_ref4: | |
4568ecf9 DE |
17216 | case DW_FORM_ref8: |
17217 | case DW_FORM_ref_udata: | |
d97bc12b | 17218 | fprintf_unfiltered (f, "constant ref: 0x%lx (adjusted)", |
4568ecf9 | 17219 | (long) (DW_UNSND (&die->attrs[i]))); |
10b3939b | 17220 | break; |
c906108c SS |
17221 | case DW_FORM_data1: |
17222 | case DW_FORM_data2: | |
17223 | case DW_FORM_data4: | |
ce5d95e1 | 17224 | case DW_FORM_data8: |
c906108c SS |
17225 | case DW_FORM_udata: |
17226 | case DW_FORM_sdata: | |
43bbcdc2 PH |
17227 | fprintf_unfiltered (f, "constant: %s", |
17228 | pulongest (DW_UNSND (&die->attrs[i]))); | |
c906108c | 17229 | break; |
2dc7f7b3 TT |
17230 | case DW_FORM_sec_offset: |
17231 | fprintf_unfiltered (f, "section offset: %s", | |
17232 | pulongest (DW_UNSND (&die->attrs[i]))); | |
17233 | break; | |
55f1336d | 17234 | case DW_FORM_ref_sig8: |
348e048f DE |
17235 | if (DW_SIGNATURED_TYPE (&die->attrs[i]) != NULL) |
17236 | fprintf_unfiltered (f, "signatured type, offset: 0x%x", | |
b64f50a1 | 17237 | DW_SIGNATURED_TYPE (&die->attrs[i])->per_cu.offset.sect_off); |
348e048f DE |
17238 | else |
17239 | fprintf_unfiltered (f, "signatured type, offset: unknown"); | |
17240 | break; | |
c906108c | 17241 | case DW_FORM_string: |
4bdf3d34 | 17242 | case DW_FORM_strp: |
3019eac3 | 17243 | case DW_FORM_GNU_str_index: |
36586728 | 17244 | case DW_FORM_GNU_strp_alt: |
8285870a | 17245 | fprintf_unfiltered (f, "string: \"%s\" (%s canonicalized)", |
c906108c | 17246 | DW_STRING (&die->attrs[i]) |
8285870a JK |
17247 | ? DW_STRING (&die->attrs[i]) : "", |
17248 | DW_STRING_IS_CANONICAL (&die->attrs[i]) ? "is" : "not"); | |
c906108c SS |
17249 | break; |
17250 | case DW_FORM_flag: | |
17251 | if (DW_UNSND (&die->attrs[i])) | |
d97bc12b | 17252 | fprintf_unfiltered (f, "flag: TRUE"); |
c906108c | 17253 | else |
d97bc12b | 17254 | fprintf_unfiltered (f, "flag: FALSE"); |
c906108c | 17255 | break; |
2dc7f7b3 TT |
17256 | case DW_FORM_flag_present: |
17257 | fprintf_unfiltered (f, "flag: TRUE"); | |
17258 | break; | |
a8329558 | 17259 | case DW_FORM_indirect: |
0963b4bd MS |
17260 | /* The reader will have reduced the indirect form to |
17261 | the "base form" so this form should not occur. */ | |
3e43a32a MS |
17262 | fprintf_unfiltered (f, |
17263 | "unexpected attribute form: DW_FORM_indirect"); | |
a8329558 | 17264 | break; |
c906108c | 17265 | default: |
d97bc12b | 17266 | fprintf_unfiltered (f, "unsupported attribute form: %d.", |
c5aa993b | 17267 | die->attrs[i].form); |
d97bc12b | 17268 | break; |
c906108c | 17269 | } |
d97bc12b | 17270 | fprintf_unfiltered (f, "\n"); |
c906108c SS |
17271 | } |
17272 | } | |
17273 | ||
f9aca02d | 17274 | static void |
d97bc12b | 17275 | dump_die_for_error (struct die_info *die) |
c906108c | 17276 | { |
d97bc12b DE |
17277 | dump_die_shallow (gdb_stderr, 0, die); |
17278 | } | |
17279 | ||
17280 | static void | |
17281 | dump_die_1 (struct ui_file *f, int level, int max_level, struct die_info *die) | |
17282 | { | |
17283 | int indent = level * 4; | |
17284 | ||
17285 | gdb_assert (die != NULL); | |
17286 | ||
17287 | if (level >= max_level) | |
17288 | return; | |
17289 | ||
17290 | dump_die_shallow (f, indent, die); | |
17291 | ||
17292 | if (die->child != NULL) | |
c906108c | 17293 | { |
d97bc12b DE |
17294 | print_spaces (indent, f); |
17295 | fprintf_unfiltered (f, " Children:"); | |
17296 | if (level + 1 < max_level) | |
17297 | { | |
17298 | fprintf_unfiltered (f, "\n"); | |
17299 | dump_die_1 (f, level + 1, max_level, die->child); | |
17300 | } | |
17301 | else | |
17302 | { | |
3e43a32a MS |
17303 | fprintf_unfiltered (f, |
17304 | " [not printed, max nesting level reached]\n"); | |
d97bc12b DE |
17305 | } |
17306 | } | |
17307 | ||
17308 | if (die->sibling != NULL && level > 0) | |
17309 | { | |
17310 | dump_die_1 (f, level, max_level, die->sibling); | |
c906108c SS |
17311 | } |
17312 | } | |
17313 | ||
d97bc12b DE |
17314 | /* This is called from the pdie macro in gdbinit.in. |
17315 | It's not static so gcc will keep a copy callable from gdb. */ | |
17316 | ||
17317 | void | |
17318 | dump_die (struct die_info *die, int max_level) | |
17319 | { | |
17320 | dump_die_1 (gdb_stdlog, 0, max_level, die); | |
17321 | } | |
17322 | ||
f9aca02d | 17323 | static void |
51545339 | 17324 | store_in_ref_table (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17325 | { |
51545339 | 17326 | void **slot; |
c906108c | 17327 | |
b64f50a1 JK |
17328 | slot = htab_find_slot_with_hash (cu->die_hash, die, die->offset.sect_off, |
17329 | INSERT); | |
51545339 DJ |
17330 | |
17331 | *slot = die; | |
c906108c SS |
17332 | } |
17333 | ||
b64f50a1 JK |
17334 | /* DW_ADDR is always stored already as sect_offset; despite for the forms |
17335 | besides DW_FORM_ref_addr it is stored as cu_offset in the DWARF file. */ | |
17336 | ||
93311388 DE |
17337 | static int |
17338 | is_ref_attr (struct attribute *attr) | |
c906108c | 17339 | { |
c906108c SS |
17340 | switch (attr->form) |
17341 | { | |
17342 | case DW_FORM_ref_addr: | |
c906108c SS |
17343 | case DW_FORM_ref1: |
17344 | case DW_FORM_ref2: | |
17345 | case DW_FORM_ref4: | |
613e1657 | 17346 | case DW_FORM_ref8: |
c906108c | 17347 | case DW_FORM_ref_udata: |
36586728 | 17348 | case DW_FORM_GNU_ref_alt: |
93311388 | 17349 | return 1; |
c906108c | 17350 | default: |
93311388 | 17351 | return 0; |
c906108c | 17352 | } |
93311388 DE |
17353 | } |
17354 | ||
b64f50a1 JK |
17355 | /* Return DIE offset of ATTR. Return 0 with complaint if ATTR is not of the |
17356 | required kind. */ | |
17357 | ||
17358 | static sect_offset | |
93311388 DE |
17359 | dwarf2_get_ref_die_offset (struct attribute *attr) |
17360 | { | |
4568ecf9 | 17361 | sect_offset retval = { DW_UNSND (attr) }; |
b64f50a1 | 17362 | |
93311388 | 17363 | if (is_ref_attr (attr)) |
b64f50a1 | 17364 | return retval; |
93311388 | 17365 | |
b64f50a1 | 17366 | retval.sect_off = 0; |
93311388 DE |
17367 | complaint (&symfile_complaints, |
17368 | _("unsupported die ref attribute form: '%s'"), | |
17369 | dwarf_form_name (attr->form)); | |
b64f50a1 | 17370 | return retval; |
c906108c SS |
17371 | } |
17372 | ||
43bbcdc2 PH |
17373 | /* Return the constant value held by ATTR. Return DEFAULT_VALUE if |
17374 | * the value held by the attribute is not constant. */ | |
a02abb62 | 17375 | |
43bbcdc2 | 17376 | static LONGEST |
a02abb62 JB |
17377 | dwarf2_get_attr_constant_value (struct attribute *attr, int default_value) |
17378 | { | |
17379 | if (attr->form == DW_FORM_sdata) | |
17380 | return DW_SND (attr); | |
17381 | else if (attr->form == DW_FORM_udata | |
17382 | || attr->form == DW_FORM_data1 | |
17383 | || attr->form == DW_FORM_data2 | |
17384 | || attr->form == DW_FORM_data4 | |
17385 | || attr->form == DW_FORM_data8) | |
17386 | return DW_UNSND (attr); | |
17387 | else | |
17388 | { | |
3e43a32a MS |
17389 | complaint (&symfile_complaints, |
17390 | _("Attribute value is not a constant (%s)"), | |
a02abb62 JB |
17391 | dwarf_form_name (attr->form)); |
17392 | return default_value; | |
17393 | } | |
17394 | } | |
17395 | ||
348e048f DE |
17396 | /* Follow reference or signature attribute ATTR of SRC_DIE. |
17397 | On entry *REF_CU is the CU of SRC_DIE. | |
17398 | On exit *REF_CU is the CU of the result. */ | |
17399 | ||
17400 | static struct die_info * | |
17401 | follow_die_ref_or_sig (struct die_info *src_die, struct attribute *attr, | |
17402 | struct dwarf2_cu **ref_cu) | |
17403 | { | |
17404 | struct die_info *die; | |
17405 | ||
17406 | if (is_ref_attr (attr)) | |
17407 | die = follow_die_ref (src_die, attr, ref_cu); | |
55f1336d | 17408 | else if (attr->form == DW_FORM_ref_sig8) |
348e048f DE |
17409 | die = follow_die_sig (src_die, attr, ref_cu); |
17410 | else | |
17411 | { | |
17412 | dump_die_for_error (src_die); | |
17413 | error (_("Dwarf Error: Expected reference attribute [in module %s]"), | |
17414 | (*ref_cu)->objfile->name); | |
17415 | } | |
17416 | ||
17417 | return die; | |
03dd20cc DJ |
17418 | } |
17419 | ||
5c631832 | 17420 | /* Follow reference OFFSET. |
673bfd45 DE |
17421 | On entry *REF_CU is the CU of the source die referencing OFFSET. |
17422 | On exit *REF_CU is the CU of the result. | |
17423 | Returns NULL if OFFSET is invalid. */ | |
f504f079 | 17424 | |
f9aca02d | 17425 | static struct die_info * |
36586728 TT |
17426 | follow_die_offset (sect_offset offset, int offset_in_dwz, |
17427 | struct dwarf2_cu **ref_cu) | |
c906108c | 17428 | { |
10b3939b | 17429 | struct die_info temp_die; |
f2f0e013 | 17430 | struct dwarf2_cu *target_cu, *cu = *ref_cu; |
10b3939b | 17431 | |
348e048f DE |
17432 | gdb_assert (cu->per_cu != NULL); |
17433 | ||
98bfdba5 PA |
17434 | target_cu = cu; |
17435 | ||
3019eac3 | 17436 | if (cu->per_cu->is_debug_types) |
348e048f DE |
17437 | { |
17438 | /* .debug_types CUs cannot reference anything outside their CU. | |
17439 | If they need to, they have to reference a signatured type via | |
55f1336d | 17440 | DW_FORM_ref_sig8. */ |
348e048f | 17441 | if (! offset_in_cu_p (&cu->header, offset)) |
5c631832 | 17442 | return NULL; |
348e048f | 17443 | } |
36586728 TT |
17444 | else if (offset_in_dwz != cu->per_cu->is_dwz |
17445 | || ! offset_in_cu_p (&cu->header, offset)) | |
10b3939b DJ |
17446 | { |
17447 | struct dwarf2_per_cu_data *per_cu; | |
9a619af0 | 17448 | |
36586728 TT |
17449 | per_cu = dwarf2_find_containing_comp_unit (offset, offset_in_dwz, |
17450 | cu->objfile); | |
03dd20cc DJ |
17451 | |
17452 | /* If necessary, add it to the queue and load its DIEs. */ | |
95554aad TT |
17453 | if (maybe_queue_comp_unit (cu, per_cu, cu->language)) |
17454 | load_full_comp_unit (per_cu, cu->language); | |
03dd20cc | 17455 | |
10b3939b DJ |
17456 | target_cu = per_cu->cu; |
17457 | } | |
98bfdba5 PA |
17458 | else if (cu->dies == NULL) |
17459 | { | |
17460 | /* We're loading full DIEs during partial symbol reading. */ | |
17461 | gdb_assert (dwarf2_per_objfile->reading_partial_symbols); | |
95554aad | 17462 | load_full_comp_unit (cu->per_cu, language_minimal); |
98bfdba5 | 17463 | } |
c906108c | 17464 | |
f2f0e013 | 17465 | *ref_cu = target_cu; |
51545339 | 17466 | temp_die.offset = offset; |
b64f50a1 | 17467 | return htab_find_with_hash (target_cu->die_hash, &temp_die, offset.sect_off); |
5c631832 | 17468 | } |
10b3939b | 17469 | |
5c631832 JK |
17470 | /* Follow reference attribute ATTR of SRC_DIE. |
17471 | On entry *REF_CU is the CU of SRC_DIE. | |
17472 | On exit *REF_CU is the CU of the result. */ | |
17473 | ||
17474 | static struct die_info * | |
17475 | follow_die_ref (struct die_info *src_die, struct attribute *attr, | |
17476 | struct dwarf2_cu **ref_cu) | |
17477 | { | |
b64f50a1 | 17478 | sect_offset offset = dwarf2_get_ref_die_offset (attr); |
5c631832 JK |
17479 | struct dwarf2_cu *cu = *ref_cu; |
17480 | struct die_info *die; | |
17481 | ||
36586728 TT |
17482 | die = follow_die_offset (offset, |
17483 | (attr->form == DW_FORM_GNU_ref_alt | |
17484 | || cu->per_cu->is_dwz), | |
17485 | ref_cu); | |
5c631832 JK |
17486 | if (!die) |
17487 | error (_("Dwarf Error: Cannot find DIE at 0x%x referenced from DIE " | |
17488 | "at 0x%x [in module %s]"), | |
b64f50a1 | 17489 | offset.sect_off, src_die->offset.sect_off, cu->objfile->name); |
348e048f | 17490 | |
5c631832 JK |
17491 | return die; |
17492 | } | |
17493 | ||
d83e736b JK |
17494 | /* Return DWARF block referenced by DW_AT_location of DIE at OFFSET at PER_CU. |
17495 | Returned value is intended for DW_OP_call*. Returned | |
17496 | dwarf2_locexpr_baton->data has lifetime of PER_CU->OBJFILE. */ | |
5c631832 JK |
17497 | |
17498 | struct dwarf2_locexpr_baton | |
8b9737bf TT |
17499 | dwarf2_fetch_die_loc_sect_off (sect_offset offset, |
17500 | struct dwarf2_per_cu_data *per_cu, | |
17501 | CORE_ADDR (*get_frame_pc) (void *baton), | |
17502 | void *baton) | |
5c631832 | 17503 | { |
918dd910 | 17504 | struct dwarf2_cu *cu; |
5c631832 JK |
17505 | struct die_info *die; |
17506 | struct attribute *attr; | |
17507 | struct dwarf2_locexpr_baton retval; | |
17508 | ||
8cf6f0b1 TT |
17509 | dw2_setup (per_cu->objfile); |
17510 | ||
918dd910 JK |
17511 | if (per_cu->cu == NULL) |
17512 | load_cu (per_cu); | |
17513 | cu = per_cu->cu; | |
17514 | ||
36586728 | 17515 | die = follow_die_offset (offset, per_cu->is_dwz, &cu); |
5c631832 JK |
17516 | if (!die) |
17517 | error (_("Dwarf Error: Cannot find DIE at 0x%x referenced in module %s"), | |
b64f50a1 | 17518 | offset.sect_off, per_cu->objfile->name); |
5c631832 JK |
17519 | |
17520 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
17521 | if (!attr) | |
17522 | { | |
e103e986 JK |
17523 | /* DWARF: "If there is no such attribute, then there is no effect.". |
17524 | DATA is ignored if SIZE is 0. */ | |
5c631832 | 17525 | |
e103e986 | 17526 | retval.data = NULL; |
5c631832 JK |
17527 | retval.size = 0; |
17528 | } | |
8cf6f0b1 TT |
17529 | else if (attr_form_is_section_offset (attr)) |
17530 | { | |
17531 | struct dwarf2_loclist_baton loclist_baton; | |
17532 | CORE_ADDR pc = (*get_frame_pc) (baton); | |
17533 | size_t size; | |
17534 | ||
17535 | fill_in_loclist_baton (cu, &loclist_baton, attr); | |
17536 | ||
17537 | retval.data = dwarf2_find_location_expression (&loclist_baton, | |
17538 | &size, pc); | |
17539 | retval.size = size; | |
17540 | } | |
5c631832 JK |
17541 | else |
17542 | { | |
17543 | if (!attr_form_is_block (attr)) | |
17544 | error (_("Dwarf Error: DIE at 0x%x referenced in module %s " | |
17545 | "is neither DW_FORM_block* nor DW_FORM_exprloc"), | |
b64f50a1 | 17546 | offset.sect_off, per_cu->objfile->name); |
5c631832 JK |
17547 | |
17548 | retval.data = DW_BLOCK (attr)->data; | |
17549 | retval.size = DW_BLOCK (attr)->size; | |
17550 | } | |
17551 | retval.per_cu = cu->per_cu; | |
918dd910 | 17552 | |
918dd910 JK |
17553 | age_cached_comp_units (); |
17554 | ||
5c631832 | 17555 | return retval; |
348e048f DE |
17556 | } |
17557 | ||
8b9737bf TT |
17558 | /* Like dwarf2_fetch_die_loc_sect_off, but take a CU |
17559 | offset. */ | |
17560 | ||
17561 | struct dwarf2_locexpr_baton | |
17562 | dwarf2_fetch_die_loc_cu_off (cu_offset offset_in_cu, | |
17563 | struct dwarf2_per_cu_data *per_cu, | |
17564 | CORE_ADDR (*get_frame_pc) (void *baton), | |
17565 | void *baton) | |
17566 | { | |
17567 | sect_offset offset = { per_cu->offset.sect_off + offset_in_cu.cu_off }; | |
17568 | ||
17569 | return dwarf2_fetch_die_loc_sect_off (offset, per_cu, get_frame_pc, baton); | |
17570 | } | |
17571 | ||
8a9b8146 TT |
17572 | /* Return the type of the DIE at DIE_OFFSET in the CU named by |
17573 | PER_CU. */ | |
17574 | ||
17575 | struct type * | |
b64f50a1 | 17576 | dwarf2_get_die_type (cu_offset die_offset, |
8a9b8146 TT |
17577 | struct dwarf2_per_cu_data *per_cu) |
17578 | { | |
b64f50a1 JK |
17579 | sect_offset die_offset_sect; |
17580 | ||
8a9b8146 | 17581 | dw2_setup (per_cu->objfile); |
b64f50a1 JK |
17582 | |
17583 | die_offset_sect.sect_off = per_cu->offset.sect_off + die_offset.cu_off; | |
17584 | return get_die_type_at_offset (die_offset_sect, per_cu); | |
8a9b8146 TT |
17585 | } |
17586 | ||
348e048f DE |
17587 | /* Follow the signature attribute ATTR in SRC_DIE. |
17588 | On entry *REF_CU is the CU of SRC_DIE. | |
17589 | On exit *REF_CU is the CU of the result. */ | |
17590 | ||
17591 | static struct die_info * | |
17592 | follow_die_sig (struct die_info *src_die, struct attribute *attr, | |
17593 | struct dwarf2_cu **ref_cu) | |
17594 | { | |
17595 | struct objfile *objfile = (*ref_cu)->objfile; | |
17596 | struct die_info temp_die; | |
17597 | struct signatured_type *sig_type = DW_SIGNATURED_TYPE (attr); | |
17598 | struct dwarf2_cu *sig_cu; | |
17599 | struct die_info *die; | |
17600 | ||
17601 | /* sig_type will be NULL if the signatured type is missing from | |
17602 | the debug info. */ | |
17603 | if (sig_type == NULL) | |
17604 | error (_("Dwarf Error: Cannot find signatured DIE referenced from DIE " | |
17605 | "at 0x%x [in module %s]"), | |
b64f50a1 | 17606 | src_die->offset.sect_off, objfile->name); |
348e048f DE |
17607 | |
17608 | /* If necessary, add it to the queue and load its DIEs. */ | |
17609 | ||
95554aad | 17610 | if (maybe_queue_comp_unit (*ref_cu, &sig_type->per_cu, language_minimal)) |
a0f42c21 | 17611 | read_signatured_type (sig_type); |
348e048f DE |
17612 | |
17613 | gdb_assert (sig_type->per_cu.cu != NULL); | |
17614 | ||
17615 | sig_cu = sig_type->per_cu.cu; | |
3019eac3 DE |
17616 | gdb_assert (sig_type->type_offset_in_section.sect_off != 0); |
17617 | temp_die.offset = sig_type->type_offset_in_section; | |
b64f50a1 JK |
17618 | die = htab_find_with_hash (sig_cu->die_hash, &temp_die, |
17619 | temp_die.offset.sect_off); | |
348e048f DE |
17620 | if (die) |
17621 | { | |
796a7ff8 DE |
17622 | /* For .gdb_index version 7 keep track of included TUs. |
17623 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. */ | |
17624 | if (dwarf2_per_objfile->index_table != NULL | |
17625 | && dwarf2_per_objfile->index_table->version <= 7) | |
17626 | { | |
17627 | VEC_safe_push (dwarf2_per_cu_ptr, | |
17628 | (*ref_cu)->per_cu->imported_symtabs, | |
17629 | sig_cu->per_cu); | |
17630 | } | |
17631 | ||
348e048f DE |
17632 | *ref_cu = sig_cu; |
17633 | return die; | |
17634 | } | |
17635 | ||
3e43a32a MS |
17636 | error (_("Dwarf Error: Cannot find signatured DIE at 0x%x referenced " |
17637 | "from DIE at 0x%x [in module %s]"), | |
b64f50a1 | 17638 | temp_die.offset.sect_off, src_die->offset.sect_off, objfile->name); |
348e048f DE |
17639 | } |
17640 | ||
17641 | /* Given an offset of a signatured type, return its signatured_type. */ | |
17642 | ||
17643 | static struct signatured_type * | |
8b70b953 TT |
17644 | lookup_signatured_type_at_offset (struct objfile *objfile, |
17645 | struct dwarf2_section_info *section, | |
b64f50a1 | 17646 | sect_offset offset) |
348e048f | 17647 | { |
b64f50a1 | 17648 | gdb_byte *info_ptr = section->buffer + offset.sect_off; |
348e048f DE |
17649 | unsigned int length, initial_length_size; |
17650 | unsigned int sig_offset; | |
52dc124a | 17651 | struct signatured_type find_entry, *sig_type; |
348e048f DE |
17652 | |
17653 | length = read_initial_length (objfile->obfd, info_ptr, &initial_length_size); | |
17654 | sig_offset = (initial_length_size | |
17655 | + 2 /*version*/ | |
17656 | + (initial_length_size == 4 ? 4 : 8) /*debug_abbrev_offset*/ | |
17657 | + 1 /*address_size*/); | |
17658 | find_entry.signature = bfd_get_64 (objfile->obfd, info_ptr + sig_offset); | |
52dc124a | 17659 | sig_type = htab_find (dwarf2_per_objfile->signatured_types, &find_entry); |
348e048f DE |
17660 | |
17661 | /* This is only used to lookup previously recorded types. | |
17662 | If we didn't find it, it's our bug. */ | |
52dc124a DE |
17663 | gdb_assert (sig_type != NULL); |
17664 | gdb_assert (offset.sect_off == sig_type->per_cu.offset.sect_off); | |
348e048f | 17665 | |
52dc124a | 17666 | return sig_type; |
348e048f DE |
17667 | } |
17668 | ||
e5fe5e75 | 17669 | /* Load the DIEs associated with type unit PER_CU into memory. */ |
348e048f DE |
17670 | |
17671 | static void | |
e5fe5e75 | 17672 | load_full_type_unit (struct dwarf2_per_cu_data *per_cu) |
348e048f | 17673 | { |
52dc124a | 17674 | struct signatured_type *sig_type; |
348e048f | 17675 | |
f4dc4d17 DE |
17676 | /* Caller is responsible for ensuring type_unit_groups don't get here. */ |
17677 | gdb_assert (! IS_TYPE_UNIT_GROUP (per_cu)); | |
17678 | ||
6721b2ec DE |
17679 | /* We have the per_cu, but we need the signatured_type. |
17680 | Fortunately this is an easy translation. */ | |
17681 | gdb_assert (per_cu->is_debug_types); | |
17682 | sig_type = (struct signatured_type *) per_cu; | |
348e048f | 17683 | |
6721b2ec | 17684 | gdb_assert (per_cu->cu == NULL); |
348e048f | 17685 | |
52dc124a | 17686 | read_signatured_type (sig_type); |
348e048f | 17687 | |
6721b2ec | 17688 | gdb_assert (per_cu->cu != NULL); |
348e048f DE |
17689 | } |
17690 | ||
dee91e82 DE |
17691 | /* die_reader_func for read_signatured_type. |
17692 | This is identical to load_full_comp_unit_reader, | |
17693 | but is kept separate for now. */ | |
348e048f DE |
17694 | |
17695 | static void | |
dee91e82 DE |
17696 | read_signatured_type_reader (const struct die_reader_specs *reader, |
17697 | gdb_byte *info_ptr, | |
17698 | struct die_info *comp_unit_die, | |
17699 | int has_children, | |
17700 | void *data) | |
348e048f | 17701 | { |
dee91e82 | 17702 | struct dwarf2_cu *cu = reader->cu; |
348e048f | 17703 | |
dee91e82 DE |
17704 | gdb_assert (cu->die_hash == NULL); |
17705 | cu->die_hash = | |
17706 | htab_create_alloc_ex (cu->header.length / 12, | |
17707 | die_hash, | |
17708 | die_eq, | |
17709 | NULL, | |
17710 | &cu->comp_unit_obstack, | |
17711 | hashtab_obstack_allocate, | |
17712 | dummy_obstack_deallocate); | |
348e048f | 17713 | |
dee91e82 DE |
17714 | if (has_children) |
17715 | comp_unit_die->child = read_die_and_siblings (reader, info_ptr, | |
17716 | &info_ptr, comp_unit_die); | |
17717 | cu->dies = comp_unit_die; | |
17718 | /* comp_unit_die is not stored in die_hash, no need. */ | |
348e048f DE |
17719 | |
17720 | /* We try not to read any attributes in this function, because not | |
9cdd5dbd | 17721 | all CUs needed for references have been loaded yet, and symbol |
348e048f | 17722 | table processing isn't initialized. But we have to set the CU language, |
dee91e82 DE |
17723 | or we won't be able to build types correctly. |
17724 | Similarly, if we do not read the producer, we can not apply | |
17725 | producer-specific interpretation. */ | |
95554aad | 17726 | prepare_one_comp_unit (cu, cu->dies, language_minimal); |
dee91e82 | 17727 | } |
348e048f | 17728 | |
3019eac3 DE |
17729 | /* Read in a signatured type and build its CU and DIEs. |
17730 | If the type is a stub for the real type in a DWO file, | |
17731 | read in the real type from the DWO file as well. */ | |
dee91e82 DE |
17732 | |
17733 | static void | |
17734 | read_signatured_type (struct signatured_type *sig_type) | |
17735 | { | |
17736 | struct dwarf2_per_cu_data *per_cu = &sig_type->per_cu; | |
348e048f | 17737 | |
3019eac3 | 17738 | gdb_assert (per_cu->is_debug_types); |
dee91e82 | 17739 | gdb_assert (per_cu->cu == NULL); |
348e048f | 17740 | |
f4dc4d17 DE |
17741 | init_cutu_and_read_dies (per_cu, NULL, 0, 1, |
17742 | read_signatured_type_reader, NULL); | |
c906108c SS |
17743 | } |
17744 | ||
c906108c SS |
17745 | /* Decode simple location descriptions. |
17746 | Given a pointer to a dwarf block that defines a location, compute | |
17747 | the location and return the value. | |
17748 | ||
4cecd739 DJ |
17749 | NOTE drow/2003-11-18: This function is called in two situations |
17750 | now: for the address of static or global variables (partial symbols | |
17751 | only) and for offsets into structures which are expected to be | |
17752 | (more or less) constant. The partial symbol case should go away, | |
17753 | and only the constant case should remain. That will let this | |
17754 | function complain more accurately. A few special modes are allowed | |
17755 | without complaint for global variables (for instance, global | |
17756 | register values and thread-local values). | |
c906108c SS |
17757 | |
17758 | A location description containing no operations indicates that the | |
4cecd739 | 17759 | object is optimized out. The return value is 0 for that case. |
6b992462 DJ |
17760 | FIXME drow/2003-11-16: No callers check for this case any more; soon all |
17761 | callers will only want a very basic result and this can become a | |
21ae7a4d JK |
17762 | complaint. |
17763 | ||
17764 | Note that stack[0] is unused except as a default error return. */ | |
c906108c SS |
17765 | |
17766 | static CORE_ADDR | |
e7c27a73 | 17767 | decode_locdesc (struct dwarf_block *blk, struct dwarf2_cu *cu) |
c906108c | 17768 | { |
e7c27a73 | 17769 | struct objfile *objfile = cu->objfile; |
56eb65bd SP |
17770 | size_t i; |
17771 | size_t size = blk->size; | |
21ae7a4d JK |
17772 | gdb_byte *data = blk->data; |
17773 | CORE_ADDR stack[64]; | |
17774 | int stacki; | |
17775 | unsigned int bytes_read, unsnd; | |
17776 | gdb_byte op; | |
c906108c | 17777 | |
21ae7a4d JK |
17778 | i = 0; |
17779 | stacki = 0; | |
17780 | stack[stacki] = 0; | |
17781 | stack[++stacki] = 0; | |
17782 | ||
17783 | while (i < size) | |
17784 | { | |
17785 | op = data[i++]; | |
17786 | switch (op) | |
17787 | { | |
17788 | case DW_OP_lit0: | |
17789 | case DW_OP_lit1: | |
17790 | case DW_OP_lit2: | |
17791 | case DW_OP_lit3: | |
17792 | case DW_OP_lit4: | |
17793 | case DW_OP_lit5: | |
17794 | case DW_OP_lit6: | |
17795 | case DW_OP_lit7: | |
17796 | case DW_OP_lit8: | |
17797 | case DW_OP_lit9: | |
17798 | case DW_OP_lit10: | |
17799 | case DW_OP_lit11: | |
17800 | case DW_OP_lit12: | |
17801 | case DW_OP_lit13: | |
17802 | case DW_OP_lit14: | |
17803 | case DW_OP_lit15: | |
17804 | case DW_OP_lit16: | |
17805 | case DW_OP_lit17: | |
17806 | case DW_OP_lit18: | |
17807 | case DW_OP_lit19: | |
17808 | case DW_OP_lit20: | |
17809 | case DW_OP_lit21: | |
17810 | case DW_OP_lit22: | |
17811 | case DW_OP_lit23: | |
17812 | case DW_OP_lit24: | |
17813 | case DW_OP_lit25: | |
17814 | case DW_OP_lit26: | |
17815 | case DW_OP_lit27: | |
17816 | case DW_OP_lit28: | |
17817 | case DW_OP_lit29: | |
17818 | case DW_OP_lit30: | |
17819 | case DW_OP_lit31: | |
17820 | stack[++stacki] = op - DW_OP_lit0; | |
17821 | break; | |
f1bea926 | 17822 | |
21ae7a4d JK |
17823 | case DW_OP_reg0: |
17824 | case DW_OP_reg1: | |
17825 | case DW_OP_reg2: | |
17826 | case DW_OP_reg3: | |
17827 | case DW_OP_reg4: | |
17828 | case DW_OP_reg5: | |
17829 | case DW_OP_reg6: | |
17830 | case DW_OP_reg7: | |
17831 | case DW_OP_reg8: | |
17832 | case DW_OP_reg9: | |
17833 | case DW_OP_reg10: | |
17834 | case DW_OP_reg11: | |
17835 | case DW_OP_reg12: | |
17836 | case DW_OP_reg13: | |
17837 | case DW_OP_reg14: | |
17838 | case DW_OP_reg15: | |
17839 | case DW_OP_reg16: | |
17840 | case DW_OP_reg17: | |
17841 | case DW_OP_reg18: | |
17842 | case DW_OP_reg19: | |
17843 | case DW_OP_reg20: | |
17844 | case DW_OP_reg21: | |
17845 | case DW_OP_reg22: | |
17846 | case DW_OP_reg23: | |
17847 | case DW_OP_reg24: | |
17848 | case DW_OP_reg25: | |
17849 | case DW_OP_reg26: | |
17850 | case DW_OP_reg27: | |
17851 | case DW_OP_reg28: | |
17852 | case DW_OP_reg29: | |
17853 | case DW_OP_reg30: | |
17854 | case DW_OP_reg31: | |
17855 | stack[++stacki] = op - DW_OP_reg0; | |
17856 | if (i < size) | |
17857 | dwarf2_complex_location_expr_complaint (); | |
17858 | break; | |
c906108c | 17859 | |
21ae7a4d JK |
17860 | case DW_OP_regx: |
17861 | unsnd = read_unsigned_leb128 (NULL, (data + i), &bytes_read); | |
17862 | i += bytes_read; | |
17863 | stack[++stacki] = unsnd; | |
17864 | if (i < size) | |
17865 | dwarf2_complex_location_expr_complaint (); | |
17866 | break; | |
c906108c | 17867 | |
21ae7a4d JK |
17868 | case DW_OP_addr: |
17869 | stack[++stacki] = read_address (objfile->obfd, &data[i], | |
17870 | cu, &bytes_read); | |
17871 | i += bytes_read; | |
17872 | break; | |
d53d4ac5 | 17873 | |
21ae7a4d JK |
17874 | case DW_OP_const1u: |
17875 | stack[++stacki] = read_1_byte (objfile->obfd, &data[i]); | |
17876 | i += 1; | |
17877 | break; | |
17878 | ||
17879 | case DW_OP_const1s: | |
17880 | stack[++stacki] = read_1_signed_byte (objfile->obfd, &data[i]); | |
17881 | i += 1; | |
17882 | break; | |
17883 | ||
17884 | case DW_OP_const2u: | |
17885 | stack[++stacki] = read_2_bytes (objfile->obfd, &data[i]); | |
17886 | i += 2; | |
17887 | break; | |
17888 | ||
17889 | case DW_OP_const2s: | |
17890 | stack[++stacki] = read_2_signed_bytes (objfile->obfd, &data[i]); | |
17891 | i += 2; | |
17892 | break; | |
d53d4ac5 | 17893 | |
21ae7a4d JK |
17894 | case DW_OP_const4u: |
17895 | stack[++stacki] = read_4_bytes (objfile->obfd, &data[i]); | |
17896 | i += 4; | |
17897 | break; | |
17898 | ||
17899 | case DW_OP_const4s: | |
17900 | stack[++stacki] = read_4_signed_bytes (objfile->obfd, &data[i]); | |
17901 | i += 4; | |
17902 | break; | |
17903 | ||
585861ea JK |
17904 | case DW_OP_const8u: |
17905 | stack[++stacki] = read_8_bytes (objfile->obfd, &data[i]); | |
17906 | i += 8; | |
17907 | break; | |
17908 | ||
21ae7a4d JK |
17909 | case DW_OP_constu: |
17910 | stack[++stacki] = read_unsigned_leb128 (NULL, (data + i), | |
17911 | &bytes_read); | |
17912 | i += bytes_read; | |
17913 | break; | |
17914 | ||
17915 | case DW_OP_consts: | |
17916 | stack[++stacki] = read_signed_leb128 (NULL, (data + i), &bytes_read); | |
17917 | i += bytes_read; | |
17918 | break; | |
17919 | ||
17920 | case DW_OP_dup: | |
17921 | stack[stacki + 1] = stack[stacki]; | |
17922 | stacki++; | |
17923 | break; | |
17924 | ||
17925 | case DW_OP_plus: | |
17926 | stack[stacki - 1] += stack[stacki]; | |
17927 | stacki--; | |
17928 | break; | |
17929 | ||
17930 | case DW_OP_plus_uconst: | |
17931 | stack[stacki] += read_unsigned_leb128 (NULL, (data + i), | |
17932 | &bytes_read); | |
17933 | i += bytes_read; | |
17934 | break; | |
17935 | ||
17936 | case DW_OP_minus: | |
17937 | stack[stacki - 1] -= stack[stacki]; | |
17938 | stacki--; | |
17939 | break; | |
17940 | ||
17941 | case DW_OP_deref: | |
17942 | /* If we're not the last op, then we definitely can't encode | |
17943 | this using GDB's address_class enum. This is valid for partial | |
17944 | global symbols, although the variable's address will be bogus | |
17945 | in the psymtab. */ | |
17946 | if (i < size) | |
17947 | dwarf2_complex_location_expr_complaint (); | |
17948 | break; | |
17949 | ||
17950 | case DW_OP_GNU_push_tls_address: | |
17951 | /* The top of the stack has the offset from the beginning | |
17952 | of the thread control block at which the variable is located. */ | |
17953 | /* Nothing should follow this operator, so the top of stack would | |
17954 | be returned. */ | |
17955 | /* This is valid for partial global symbols, but the variable's | |
585861ea JK |
17956 | address will be bogus in the psymtab. Make it always at least |
17957 | non-zero to not look as a variable garbage collected by linker | |
17958 | which have DW_OP_addr 0. */ | |
21ae7a4d JK |
17959 | if (i < size) |
17960 | dwarf2_complex_location_expr_complaint (); | |
585861ea | 17961 | stack[stacki]++; |
21ae7a4d JK |
17962 | break; |
17963 | ||
17964 | case DW_OP_GNU_uninit: | |
17965 | break; | |
17966 | ||
3019eac3 | 17967 | case DW_OP_GNU_addr_index: |
49f6c839 | 17968 | case DW_OP_GNU_const_index: |
3019eac3 DE |
17969 | stack[++stacki] = read_addr_index_from_leb128 (cu, &data[i], |
17970 | &bytes_read); | |
17971 | i += bytes_read; | |
17972 | break; | |
17973 | ||
21ae7a4d JK |
17974 | default: |
17975 | { | |
f39c6ffd | 17976 | const char *name = get_DW_OP_name (op); |
21ae7a4d JK |
17977 | |
17978 | if (name) | |
17979 | complaint (&symfile_complaints, _("unsupported stack op: '%s'"), | |
17980 | name); | |
17981 | else | |
17982 | complaint (&symfile_complaints, _("unsupported stack op: '%02x'"), | |
17983 | op); | |
17984 | } | |
17985 | ||
17986 | return (stack[stacki]); | |
d53d4ac5 | 17987 | } |
3c6e0cb3 | 17988 | |
21ae7a4d JK |
17989 | /* Enforce maximum stack depth of SIZE-1 to avoid writing |
17990 | outside of the allocated space. Also enforce minimum>0. */ | |
17991 | if (stacki >= ARRAY_SIZE (stack) - 1) | |
17992 | { | |
17993 | complaint (&symfile_complaints, | |
17994 | _("location description stack overflow")); | |
17995 | return 0; | |
17996 | } | |
17997 | ||
17998 | if (stacki <= 0) | |
17999 | { | |
18000 | complaint (&symfile_complaints, | |
18001 | _("location description stack underflow")); | |
18002 | return 0; | |
18003 | } | |
18004 | } | |
18005 | return (stack[stacki]); | |
c906108c SS |
18006 | } |
18007 | ||
18008 | /* memory allocation interface */ | |
18009 | ||
c906108c | 18010 | static struct dwarf_block * |
7b5a2f43 | 18011 | dwarf_alloc_block (struct dwarf2_cu *cu) |
c906108c SS |
18012 | { |
18013 | struct dwarf_block *blk; | |
18014 | ||
18015 | blk = (struct dwarf_block *) | |
7b5a2f43 | 18016 | obstack_alloc (&cu->comp_unit_obstack, sizeof (struct dwarf_block)); |
c906108c SS |
18017 | return (blk); |
18018 | } | |
18019 | ||
c906108c | 18020 | static struct die_info * |
b60c80d6 | 18021 | dwarf_alloc_die (struct dwarf2_cu *cu, int num_attrs) |
c906108c SS |
18022 | { |
18023 | struct die_info *die; | |
b60c80d6 DJ |
18024 | size_t size = sizeof (struct die_info); |
18025 | ||
18026 | if (num_attrs > 1) | |
18027 | size += (num_attrs - 1) * sizeof (struct attribute); | |
c906108c | 18028 | |
b60c80d6 | 18029 | die = (struct die_info *) obstack_alloc (&cu->comp_unit_obstack, size); |
c906108c SS |
18030 | memset (die, 0, sizeof (struct die_info)); |
18031 | return (die); | |
18032 | } | |
2e276125 JB |
18033 | |
18034 | \f | |
18035 | /* Macro support. */ | |
18036 | ||
233d95b5 JK |
18037 | /* Return file name relative to the compilation directory of file number I in |
18038 | *LH's file name table. The result is allocated using xmalloc; the caller is | |
2e276125 | 18039 | responsible for freeing it. */ |
233d95b5 | 18040 | |
2e276125 | 18041 | static char * |
233d95b5 | 18042 | file_file_name (int file, struct line_header *lh) |
2e276125 | 18043 | { |
6a83a1e6 EZ |
18044 | /* Is the file number a valid index into the line header's file name |
18045 | table? Remember that file numbers start with one, not zero. */ | |
18046 | if (1 <= file && file <= lh->num_file_names) | |
18047 | { | |
18048 | struct file_entry *fe = &lh->file_names[file - 1]; | |
6e70227d | 18049 | |
233d95b5 | 18050 | if (IS_ABSOLUTE_PATH (fe->name) || fe->dir_index == 0) |
6a83a1e6 | 18051 | return xstrdup (fe->name); |
233d95b5 JK |
18052 | return concat (lh->include_dirs[fe->dir_index - 1], SLASH_STRING, |
18053 | fe->name, NULL); | |
6a83a1e6 | 18054 | } |
2e276125 JB |
18055 | else |
18056 | { | |
6a83a1e6 EZ |
18057 | /* The compiler produced a bogus file number. We can at least |
18058 | record the macro definitions made in the file, even if we | |
18059 | won't be able to find the file by name. */ | |
18060 | char fake_name[80]; | |
9a619af0 | 18061 | |
8c042590 PM |
18062 | xsnprintf (fake_name, sizeof (fake_name), |
18063 | "<bad macro file number %d>", file); | |
2e276125 | 18064 | |
6e70227d | 18065 | complaint (&symfile_complaints, |
6a83a1e6 EZ |
18066 | _("bad file number in macro information (%d)"), |
18067 | file); | |
2e276125 | 18068 | |
6a83a1e6 | 18069 | return xstrdup (fake_name); |
2e276125 JB |
18070 | } |
18071 | } | |
18072 | ||
233d95b5 JK |
18073 | /* Return the full name of file number I in *LH's file name table. |
18074 | Use COMP_DIR as the name of the current directory of the | |
18075 | compilation. The result is allocated using xmalloc; the caller is | |
18076 | responsible for freeing it. */ | |
18077 | static char * | |
18078 | file_full_name (int file, struct line_header *lh, const char *comp_dir) | |
18079 | { | |
18080 | /* Is the file number a valid index into the line header's file name | |
18081 | table? Remember that file numbers start with one, not zero. */ | |
18082 | if (1 <= file && file <= lh->num_file_names) | |
18083 | { | |
18084 | char *relative = file_file_name (file, lh); | |
18085 | ||
18086 | if (IS_ABSOLUTE_PATH (relative) || comp_dir == NULL) | |
18087 | return relative; | |
18088 | return reconcat (relative, comp_dir, SLASH_STRING, relative, NULL); | |
18089 | } | |
18090 | else | |
18091 | return file_file_name (file, lh); | |
18092 | } | |
18093 | ||
2e276125 JB |
18094 | |
18095 | static struct macro_source_file * | |
18096 | macro_start_file (int file, int line, | |
18097 | struct macro_source_file *current_file, | |
18098 | const char *comp_dir, | |
18099 | struct line_header *lh, struct objfile *objfile) | |
18100 | { | |
233d95b5 JK |
18101 | /* File name relative to the compilation directory of this source file. */ |
18102 | char *file_name = file_file_name (file, lh); | |
2e276125 JB |
18103 | |
18104 | /* We don't create a macro table for this compilation unit | |
18105 | at all until we actually get a filename. */ | |
18106 | if (! pending_macros) | |
6532ff36 | 18107 | pending_macros = new_macro_table (&objfile->per_bfd->storage_obstack, |
233d95b5 JK |
18108 | objfile->per_bfd->macro_cache, |
18109 | comp_dir); | |
2e276125 JB |
18110 | |
18111 | if (! current_file) | |
abc9d0dc TT |
18112 | { |
18113 | /* If we have no current file, then this must be the start_file | |
18114 | directive for the compilation unit's main source file. */ | |
233d95b5 | 18115 | current_file = macro_set_main (pending_macros, file_name); |
abc9d0dc TT |
18116 | macro_define_special (pending_macros); |
18117 | } | |
2e276125 | 18118 | else |
233d95b5 | 18119 | current_file = macro_include (current_file, line, file_name); |
2e276125 | 18120 | |
233d95b5 | 18121 | xfree (file_name); |
6e70227d | 18122 | |
2e276125 JB |
18123 | return current_file; |
18124 | } | |
18125 | ||
18126 | ||
18127 | /* Copy the LEN characters at BUF to a xmalloc'ed block of memory, | |
18128 | followed by a null byte. */ | |
18129 | static char * | |
18130 | copy_string (const char *buf, int len) | |
18131 | { | |
18132 | char *s = xmalloc (len + 1); | |
9a619af0 | 18133 | |
2e276125 JB |
18134 | memcpy (s, buf, len); |
18135 | s[len] = '\0'; | |
2e276125 JB |
18136 | return s; |
18137 | } | |
18138 | ||
18139 | ||
18140 | static const char * | |
18141 | consume_improper_spaces (const char *p, const char *body) | |
18142 | { | |
18143 | if (*p == ' ') | |
18144 | { | |
4d3c2250 | 18145 | complaint (&symfile_complaints, |
3e43a32a MS |
18146 | _("macro definition contains spaces " |
18147 | "in formal argument list:\n`%s'"), | |
4d3c2250 | 18148 | body); |
2e276125 JB |
18149 | |
18150 | while (*p == ' ') | |
18151 | p++; | |
18152 | } | |
18153 | ||
18154 | return p; | |
18155 | } | |
18156 | ||
18157 | ||
18158 | static void | |
18159 | parse_macro_definition (struct macro_source_file *file, int line, | |
18160 | const char *body) | |
18161 | { | |
18162 | const char *p; | |
18163 | ||
18164 | /* The body string takes one of two forms. For object-like macro | |
18165 | definitions, it should be: | |
18166 | ||
18167 | <macro name> " " <definition> | |
18168 | ||
18169 | For function-like macro definitions, it should be: | |
18170 | ||
18171 | <macro name> "() " <definition> | |
18172 | or | |
18173 | <macro name> "(" <arg name> ( "," <arg name> ) * ") " <definition> | |
18174 | ||
18175 | Spaces may appear only where explicitly indicated, and in the | |
18176 | <definition>. | |
18177 | ||
18178 | The Dwarf 2 spec says that an object-like macro's name is always | |
18179 | followed by a space, but versions of GCC around March 2002 omit | |
6e70227d | 18180 | the space when the macro's definition is the empty string. |
2e276125 JB |
18181 | |
18182 | The Dwarf 2 spec says that there should be no spaces between the | |
18183 | formal arguments in a function-like macro's formal argument list, | |
18184 | but versions of GCC around March 2002 include spaces after the | |
18185 | commas. */ | |
18186 | ||
18187 | ||
18188 | /* Find the extent of the macro name. The macro name is terminated | |
18189 | by either a space or null character (for an object-like macro) or | |
18190 | an opening paren (for a function-like macro). */ | |
18191 | for (p = body; *p; p++) | |
18192 | if (*p == ' ' || *p == '(') | |
18193 | break; | |
18194 | ||
18195 | if (*p == ' ' || *p == '\0') | |
18196 | { | |
18197 | /* It's an object-like macro. */ | |
18198 | int name_len = p - body; | |
18199 | char *name = copy_string (body, name_len); | |
18200 | const char *replacement; | |
18201 | ||
18202 | if (*p == ' ') | |
18203 | replacement = body + name_len + 1; | |
18204 | else | |
18205 | { | |
4d3c2250 | 18206 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
18207 | replacement = body + name_len; |
18208 | } | |
6e70227d | 18209 | |
2e276125 JB |
18210 | macro_define_object (file, line, name, replacement); |
18211 | ||
18212 | xfree (name); | |
18213 | } | |
18214 | else if (*p == '(') | |
18215 | { | |
18216 | /* It's a function-like macro. */ | |
18217 | char *name = copy_string (body, p - body); | |
18218 | int argc = 0; | |
18219 | int argv_size = 1; | |
18220 | char **argv = xmalloc (argv_size * sizeof (*argv)); | |
18221 | ||
18222 | p++; | |
18223 | ||
18224 | p = consume_improper_spaces (p, body); | |
18225 | ||
18226 | /* Parse the formal argument list. */ | |
18227 | while (*p && *p != ')') | |
18228 | { | |
18229 | /* Find the extent of the current argument name. */ | |
18230 | const char *arg_start = p; | |
18231 | ||
18232 | while (*p && *p != ',' && *p != ')' && *p != ' ') | |
18233 | p++; | |
18234 | ||
18235 | if (! *p || p == arg_start) | |
4d3c2250 | 18236 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
18237 | else |
18238 | { | |
18239 | /* Make sure argv has room for the new argument. */ | |
18240 | if (argc >= argv_size) | |
18241 | { | |
18242 | argv_size *= 2; | |
18243 | argv = xrealloc (argv, argv_size * sizeof (*argv)); | |
18244 | } | |
18245 | ||
18246 | argv[argc++] = copy_string (arg_start, p - arg_start); | |
18247 | } | |
18248 | ||
18249 | p = consume_improper_spaces (p, body); | |
18250 | ||
18251 | /* Consume the comma, if present. */ | |
18252 | if (*p == ',') | |
18253 | { | |
18254 | p++; | |
18255 | ||
18256 | p = consume_improper_spaces (p, body); | |
18257 | } | |
18258 | } | |
18259 | ||
18260 | if (*p == ')') | |
18261 | { | |
18262 | p++; | |
18263 | ||
18264 | if (*p == ' ') | |
18265 | /* Perfectly formed definition, no complaints. */ | |
18266 | macro_define_function (file, line, name, | |
6e70227d | 18267 | argc, (const char **) argv, |
2e276125 JB |
18268 | p + 1); |
18269 | else if (*p == '\0') | |
18270 | { | |
18271 | /* Complain, but do define it. */ | |
4d3c2250 | 18272 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 | 18273 | macro_define_function (file, line, name, |
6e70227d | 18274 | argc, (const char **) argv, |
2e276125 JB |
18275 | p); |
18276 | } | |
18277 | else | |
18278 | /* Just complain. */ | |
4d3c2250 | 18279 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
18280 | } |
18281 | else | |
18282 | /* Just complain. */ | |
4d3c2250 | 18283 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
18284 | |
18285 | xfree (name); | |
18286 | { | |
18287 | int i; | |
18288 | ||
18289 | for (i = 0; i < argc; i++) | |
18290 | xfree (argv[i]); | |
18291 | } | |
18292 | xfree (argv); | |
18293 | } | |
18294 | else | |
4d3c2250 | 18295 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
18296 | } |
18297 | ||
cf2c3c16 TT |
18298 | /* Skip some bytes from BYTES according to the form given in FORM. |
18299 | Returns the new pointer. */ | |
2e276125 | 18300 | |
cf2c3c16 | 18301 | static gdb_byte * |
f664829e | 18302 | skip_form_bytes (bfd *abfd, gdb_byte *bytes, gdb_byte *buffer_end, |
cf2c3c16 TT |
18303 | enum dwarf_form form, |
18304 | unsigned int offset_size, | |
18305 | struct dwarf2_section_info *section) | |
2e276125 | 18306 | { |
cf2c3c16 | 18307 | unsigned int bytes_read; |
2e276125 | 18308 | |
cf2c3c16 | 18309 | switch (form) |
2e276125 | 18310 | { |
cf2c3c16 TT |
18311 | case DW_FORM_data1: |
18312 | case DW_FORM_flag: | |
18313 | ++bytes; | |
18314 | break; | |
18315 | ||
18316 | case DW_FORM_data2: | |
18317 | bytes += 2; | |
18318 | break; | |
18319 | ||
18320 | case DW_FORM_data4: | |
18321 | bytes += 4; | |
18322 | break; | |
18323 | ||
18324 | case DW_FORM_data8: | |
18325 | bytes += 8; | |
18326 | break; | |
18327 | ||
18328 | case DW_FORM_string: | |
18329 | read_direct_string (abfd, bytes, &bytes_read); | |
18330 | bytes += bytes_read; | |
18331 | break; | |
18332 | ||
18333 | case DW_FORM_sec_offset: | |
18334 | case DW_FORM_strp: | |
36586728 | 18335 | case DW_FORM_GNU_strp_alt: |
cf2c3c16 TT |
18336 | bytes += offset_size; |
18337 | break; | |
18338 | ||
18339 | case DW_FORM_block: | |
18340 | bytes += read_unsigned_leb128 (abfd, bytes, &bytes_read); | |
18341 | bytes += bytes_read; | |
18342 | break; | |
18343 | ||
18344 | case DW_FORM_block1: | |
18345 | bytes += 1 + read_1_byte (abfd, bytes); | |
18346 | break; | |
18347 | case DW_FORM_block2: | |
18348 | bytes += 2 + read_2_bytes (abfd, bytes); | |
18349 | break; | |
18350 | case DW_FORM_block4: | |
18351 | bytes += 4 + read_4_bytes (abfd, bytes); | |
18352 | break; | |
18353 | ||
18354 | case DW_FORM_sdata: | |
18355 | case DW_FORM_udata: | |
3019eac3 DE |
18356 | case DW_FORM_GNU_addr_index: |
18357 | case DW_FORM_GNU_str_index: | |
f664829e DE |
18358 | bytes = (gdb_byte *) gdb_skip_leb128 (bytes, buffer_end); |
18359 | if (bytes == NULL) | |
18360 | { | |
18361 | dwarf2_section_buffer_overflow_complaint (section); | |
18362 | return NULL; | |
18363 | } | |
cf2c3c16 TT |
18364 | break; |
18365 | ||
18366 | default: | |
18367 | { | |
18368 | complain: | |
18369 | complaint (&symfile_complaints, | |
18370 | _("invalid form 0x%x in `%s'"), | |
18371 | form, | |
18372 | section->asection->name); | |
18373 | return NULL; | |
18374 | } | |
2e276125 JB |
18375 | } |
18376 | ||
cf2c3c16 TT |
18377 | return bytes; |
18378 | } | |
757a13d0 | 18379 | |
cf2c3c16 TT |
18380 | /* A helper for dwarf_decode_macros that handles skipping an unknown |
18381 | opcode. Returns an updated pointer to the macro data buffer; or, | |
18382 | on error, issues a complaint and returns NULL. */ | |
757a13d0 | 18383 | |
cf2c3c16 TT |
18384 | static gdb_byte * |
18385 | skip_unknown_opcode (unsigned int opcode, | |
18386 | gdb_byte **opcode_definitions, | |
f664829e | 18387 | gdb_byte *mac_ptr, gdb_byte *mac_end, |
cf2c3c16 TT |
18388 | bfd *abfd, |
18389 | unsigned int offset_size, | |
18390 | struct dwarf2_section_info *section) | |
18391 | { | |
18392 | unsigned int bytes_read, i; | |
18393 | unsigned long arg; | |
18394 | gdb_byte *defn; | |
2e276125 | 18395 | |
cf2c3c16 | 18396 | if (opcode_definitions[opcode] == NULL) |
2e276125 | 18397 | { |
cf2c3c16 TT |
18398 | complaint (&symfile_complaints, |
18399 | _("unrecognized DW_MACFINO opcode 0x%x"), | |
18400 | opcode); | |
18401 | return NULL; | |
18402 | } | |
2e276125 | 18403 | |
cf2c3c16 TT |
18404 | defn = opcode_definitions[opcode]; |
18405 | arg = read_unsigned_leb128 (abfd, defn, &bytes_read); | |
18406 | defn += bytes_read; | |
2e276125 | 18407 | |
cf2c3c16 TT |
18408 | for (i = 0; i < arg; ++i) |
18409 | { | |
f664829e DE |
18410 | mac_ptr = skip_form_bytes (abfd, mac_ptr, mac_end, defn[i], offset_size, |
18411 | section); | |
cf2c3c16 TT |
18412 | if (mac_ptr == NULL) |
18413 | { | |
18414 | /* skip_form_bytes already issued the complaint. */ | |
18415 | return NULL; | |
18416 | } | |
18417 | } | |
757a13d0 | 18418 | |
cf2c3c16 TT |
18419 | return mac_ptr; |
18420 | } | |
757a13d0 | 18421 | |
cf2c3c16 TT |
18422 | /* A helper function which parses the header of a macro section. |
18423 | If the macro section is the extended (for now called "GNU") type, | |
18424 | then this updates *OFFSET_SIZE. Returns a pointer to just after | |
18425 | the header, or issues a complaint and returns NULL on error. */ | |
757a13d0 | 18426 | |
cf2c3c16 TT |
18427 | static gdb_byte * |
18428 | dwarf_parse_macro_header (gdb_byte **opcode_definitions, | |
18429 | bfd *abfd, | |
18430 | gdb_byte *mac_ptr, | |
18431 | unsigned int *offset_size, | |
18432 | int section_is_gnu) | |
18433 | { | |
18434 | memset (opcode_definitions, 0, 256 * sizeof (gdb_byte *)); | |
757a13d0 | 18435 | |
cf2c3c16 TT |
18436 | if (section_is_gnu) |
18437 | { | |
18438 | unsigned int version, flags; | |
757a13d0 | 18439 | |
cf2c3c16 TT |
18440 | version = read_2_bytes (abfd, mac_ptr); |
18441 | if (version != 4) | |
18442 | { | |
18443 | complaint (&symfile_complaints, | |
18444 | _("unrecognized version `%d' in .debug_macro section"), | |
18445 | version); | |
18446 | return NULL; | |
18447 | } | |
18448 | mac_ptr += 2; | |
757a13d0 | 18449 | |
cf2c3c16 TT |
18450 | flags = read_1_byte (abfd, mac_ptr); |
18451 | ++mac_ptr; | |
18452 | *offset_size = (flags & 1) ? 8 : 4; | |
757a13d0 | 18453 | |
cf2c3c16 TT |
18454 | if ((flags & 2) != 0) |
18455 | /* We don't need the line table offset. */ | |
18456 | mac_ptr += *offset_size; | |
757a13d0 | 18457 | |
cf2c3c16 TT |
18458 | /* Vendor opcode descriptions. */ |
18459 | if ((flags & 4) != 0) | |
18460 | { | |
18461 | unsigned int i, count; | |
757a13d0 | 18462 | |
cf2c3c16 TT |
18463 | count = read_1_byte (abfd, mac_ptr); |
18464 | ++mac_ptr; | |
18465 | for (i = 0; i < count; ++i) | |
18466 | { | |
18467 | unsigned int opcode, bytes_read; | |
18468 | unsigned long arg; | |
18469 | ||
18470 | opcode = read_1_byte (abfd, mac_ptr); | |
18471 | ++mac_ptr; | |
18472 | opcode_definitions[opcode] = mac_ptr; | |
18473 | arg = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
18474 | mac_ptr += bytes_read; | |
18475 | mac_ptr += arg; | |
18476 | } | |
757a13d0 | 18477 | } |
cf2c3c16 | 18478 | } |
757a13d0 | 18479 | |
cf2c3c16 TT |
18480 | return mac_ptr; |
18481 | } | |
757a13d0 | 18482 | |
cf2c3c16 | 18483 | /* A helper for dwarf_decode_macros that handles the GNU extensions, |
8fc3fc34 | 18484 | including DW_MACRO_GNU_transparent_include. */ |
cf2c3c16 TT |
18485 | |
18486 | static void | |
18487 | dwarf_decode_macro_bytes (bfd *abfd, gdb_byte *mac_ptr, gdb_byte *mac_end, | |
18488 | struct macro_source_file *current_file, | |
15d034d0 | 18489 | struct line_header *lh, const char *comp_dir, |
cf2c3c16 | 18490 | struct dwarf2_section_info *section, |
36586728 | 18491 | int section_is_gnu, int section_is_dwz, |
cf2c3c16 | 18492 | unsigned int offset_size, |
8fc3fc34 TT |
18493 | struct objfile *objfile, |
18494 | htab_t include_hash) | |
cf2c3c16 TT |
18495 | { |
18496 | enum dwarf_macro_record_type macinfo_type; | |
18497 | int at_commandline; | |
18498 | gdb_byte *opcode_definitions[256]; | |
757a13d0 | 18499 | |
cf2c3c16 TT |
18500 | mac_ptr = dwarf_parse_macro_header (opcode_definitions, abfd, mac_ptr, |
18501 | &offset_size, section_is_gnu); | |
18502 | if (mac_ptr == NULL) | |
18503 | { | |
18504 | /* We already issued a complaint. */ | |
18505 | return; | |
18506 | } | |
757a13d0 JK |
18507 | |
18508 | /* Determines if GDB is still before first DW_MACINFO_start_file. If true | |
18509 | GDB is still reading the definitions from command line. First | |
18510 | DW_MACINFO_start_file will need to be ignored as it was already executed | |
18511 | to create CURRENT_FILE for the main source holding also the command line | |
18512 | definitions. On first met DW_MACINFO_start_file this flag is reset to | |
18513 | normally execute all the remaining DW_MACINFO_start_file macinfos. */ | |
18514 | ||
18515 | at_commandline = 1; | |
18516 | ||
18517 | do | |
18518 | { | |
18519 | /* Do we at least have room for a macinfo type byte? */ | |
18520 | if (mac_ptr >= mac_end) | |
18521 | { | |
f664829e | 18522 | dwarf2_section_buffer_overflow_complaint (section); |
757a13d0 JK |
18523 | break; |
18524 | } | |
18525 | ||
18526 | macinfo_type = read_1_byte (abfd, mac_ptr); | |
18527 | mac_ptr++; | |
18528 | ||
cf2c3c16 TT |
18529 | /* Note that we rely on the fact that the corresponding GNU and |
18530 | DWARF constants are the same. */ | |
757a13d0 JK |
18531 | switch (macinfo_type) |
18532 | { | |
18533 | /* A zero macinfo type indicates the end of the macro | |
18534 | information. */ | |
18535 | case 0: | |
18536 | break; | |
2e276125 | 18537 | |
cf2c3c16 TT |
18538 | case DW_MACRO_GNU_define: |
18539 | case DW_MACRO_GNU_undef: | |
18540 | case DW_MACRO_GNU_define_indirect: | |
18541 | case DW_MACRO_GNU_undef_indirect: | |
36586728 TT |
18542 | case DW_MACRO_GNU_define_indirect_alt: |
18543 | case DW_MACRO_GNU_undef_indirect_alt: | |
2e276125 | 18544 | { |
891d2f0b | 18545 | unsigned int bytes_read; |
2e276125 JB |
18546 | int line; |
18547 | char *body; | |
cf2c3c16 | 18548 | int is_define; |
2e276125 | 18549 | |
cf2c3c16 TT |
18550 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); |
18551 | mac_ptr += bytes_read; | |
18552 | ||
18553 | if (macinfo_type == DW_MACRO_GNU_define | |
18554 | || macinfo_type == DW_MACRO_GNU_undef) | |
18555 | { | |
18556 | body = read_direct_string (abfd, mac_ptr, &bytes_read); | |
18557 | mac_ptr += bytes_read; | |
18558 | } | |
18559 | else | |
18560 | { | |
18561 | LONGEST str_offset; | |
18562 | ||
18563 | str_offset = read_offset_1 (abfd, mac_ptr, offset_size); | |
18564 | mac_ptr += offset_size; | |
2e276125 | 18565 | |
36586728 | 18566 | if (macinfo_type == DW_MACRO_GNU_define_indirect_alt |
f7a35f02 TT |
18567 | || macinfo_type == DW_MACRO_GNU_undef_indirect_alt |
18568 | || section_is_dwz) | |
36586728 TT |
18569 | { |
18570 | struct dwz_file *dwz = dwarf2_get_dwz_file (); | |
18571 | ||
18572 | body = read_indirect_string_from_dwz (dwz, str_offset); | |
18573 | } | |
18574 | else | |
18575 | body = read_indirect_string_at_offset (abfd, str_offset); | |
cf2c3c16 TT |
18576 | } |
18577 | ||
18578 | is_define = (macinfo_type == DW_MACRO_GNU_define | |
36586728 TT |
18579 | || macinfo_type == DW_MACRO_GNU_define_indirect |
18580 | || macinfo_type == DW_MACRO_GNU_define_indirect_alt); | |
2e276125 | 18581 | if (! current_file) |
757a13d0 JK |
18582 | { |
18583 | /* DWARF violation as no main source is present. */ | |
18584 | complaint (&symfile_complaints, | |
18585 | _("debug info with no main source gives macro %s " | |
18586 | "on line %d: %s"), | |
cf2c3c16 TT |
18587 | is_define ? _("definition") : _("undefinition"), |
18588 | line, body); | |
757a13d0 JK |
18589 | break; |
18590 | } | |
3e43a32a MS |
18591 | if ((line == 0 && !at_commandline) |
18592 | || (line != 0 && at_commandline)) | |
4d3c2250 | 18593 | complaint (&symfile_complaints, |
757a13d0 JK |
18594 | _("debug info gives %s macro %s with %s line %d: %s"), |
18595 | at_commandline ? _("command-line") : _("in-file"), | |
cf2c3c16 | 18596 | is_define ? _("definition") : _("undefinition"), |
757a13d0 JK |
18597 | line == 0 ? _("zero") : _("non-zero"), line, body); |
18598 | ||
cf2c3c16 | 18599 | if (is_define) |
757a13d0 | 18600 | parse_macro_definition (current_file, line, body); |
cf2c3c16 TT |
18601 | else |
18602 | { | |
18603 | gdb_assert (macinfo_type == DW_MACRO_GNU_undef | |
36586728 TT |
18604 | || macinfo_type == DW_MACRO_GNU_undef_indirect |
18605 | || macinfo_type == DW_MACRO_GNU_undef_indirect_alt); | |
cf2c3c16 TT |
18606 | macro_undef (current_file, line, body); |
18607 | } | |
2e276125 JB |
18608 | } |
18609 | break; | |
18610 | ||
cf2c3c16 | 18611 | case DW_MACRO_GNU_start_file: |
2e276125 | 18612 | { |
891d2f0b | 18613 | unsigned int bytes_read; |
2e276125 JB |
18614 | int line, file; |
18615 | ||
18616 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
18617 | mac_ptr += bytes_read; | |
18618 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
18619 | mac_ptr += bytes_read; | |
18620 | ||
3e43a32a MS |
18621 | if ((line == 0 && !at_commandline) |
18622 | || (line != 0 && at_commandline)) | |
757a13d0 JK |
18623 | complaint (&symfile_complaints, |
18624 | _("debug info gives source %d included " | |
18625 | "from %s at %s line %d"), | |
18626 | file, at_commandline ? _("command-line") : _("file"), | |
18627 | line == 0 ? _("zero") : _("non-zero"), line); | |
18628 | ||
18629 | if (at_commandline) | |
18630 | { | |
cf2c3c16 TT |
18631 | /* This DW_MACRO_GNU_start_file was executed in the |
18632 | pass one. */ | |
757a13d0 JK |
18633 | at_commandline = 0; |
18634 | } | |
18635 | else | |
18636 | current_file = macro_start_file (file, line, | |
18637 | current_file, comp_dir, | |
cf2c3c16 | 18638 | lh, objfile); |
2e276125 JB |
18639 | } |
18640 | break; | |
18641 | ||
cf2c3c16 | 18642 | case DW_MACRO_GNU_end_file: |
2e276125 | 18643 | if (! current_file) |
4d3c2250 | 18644 | complaint (&symfile_complaints, |
3e43a32a MS |
18645 | _("macro debug info has an unmatched " |
18646 | "`close_file' directive")); | |
2e276125 JB |
18647 | else |
18648 | { | |
18649 | current_file = current_file->included_by; | |
18650 | if (! current_file) | |
18651 | { | |
cf2c3c16 | 18652 | enum dwarf_macro_record_type next_type; |
2e276125 JB |
18653 | |
18654 | /* GCC circa March 2002 doesn't produce the zero | |
18655 | type byte marking the end of the compilation | |
18656 | unit. Complain if it's not there, but exit no | |
18657 | matter what. */ | |
18658 | ||
18659 | /* Do we at least have room for a macinfo type byte? */ | |
18660 | if (mac_ptr >= mac_end) | |
18661 | { | |
f664829e | 18662 | dwarf2_section_buffer_overflow_complaint (section); |
2e276125 JB |
18663 | return; |
18664 | } | |
18665 | ||
18666 | /* We don't increment mac_ptr here, so this is just | |
18667 | a look-ahead. */ | |
18668 | next_type = read_1_byte (abfd, mac_ptr); | |
18669 | if (next_type != 0) | |
4d3c2250 | 18670 | complaint (&symfile_complaints, |
3e43a32a MS |
18671 | _("no terminating 0-type entry for " |
18672 | "macros in `.debug_macinfo' section")); | |
2e276125 JB |
18673 | |
18674 | return; | |
18675 | } | |
18676 | } | |
18677 | break; | |
18678 | ||
cf2c3c16 | 18679 | case DW_MACRO_GNU_transparent_include: |
36586728 | 18680 | case DW_MACRO_GNU_transparent_include_alt: |
cf2c3c16 TT |
18681 | { |
18682 | LONGEST offset; | |
8fc3fc34 | 18683 | void **slot; |
a036ba48 TT |
18684 | bfd *include_bfd = abfd; |
18685 | struct dwarf2_section_info *include_section = section; | |
18686 | struct dwarf2_section_info alt_section; | |
18687 | gdb_byte *include_mac_end = mac_end; | |
18688 | int is_dwz = section_is_dwz; | |
18689 | gdb_byte *new_mac_ptr; | |
cf2c3c16 TT |
18690 | |
18691 | offset = read_offset_1 (abfd, mac_ptr, offset_size); | |
18692 | mac_ptr += offset_size; | |
18693 | ||
a036ba48 TT |
18694 | if (macinfo_type == DW_MACRO_GNU_transparent_include_alt) |
18695 | { | |
18696 | struct dwz_file *dwz = dwarf2_get_dwz_file (); | |
18697 | ||
18698 | dwarf2_read_section (dwarf2_per_objfile->objfile, | |
18699 | &dwz->macro); | |
18700 | ||
18701 | include_bfd = dwz->macro.asection->owner; | |
18702 | include_section = &dwz->macro; | |
18703 | include_mac_end = dwz->macro.buffer + dwz->macro.size; | |
18704 | is_dwz = 1; | |
18705 | } | |
18706 | ||
18707 | new_mac_ptr = include_section->buffer + offset; | |
18708 | slot = htab_find_slot (include_hash, new_mac_ptr, INSERT); | |
18709 | ||
8fc3fc34 TT |
18710 | if (*slot != NULL) |
18711 | { | |
18712 | /* This has actually happened; see | |
18713 | http://sourceware.org/bugzilla/show_bug.cgi?id=13568. */ | |
18714 | complaint (&symfile_complaints, | |
18715 | _("recursive DW_MACRO_GNU_transparent_include in " | |
18716 | ".debug_macro section")); | |
18717 | } | |
18718 | else | |
18719 | { | |
a036ba48 | 18720 | *slot = new_mac_ptr; |
36586728 | 18721 | |
a036ba48 | 18722 | dwarf_decode_macro_bytes (include_bfd, new_mac_ptr, |
36586728 | 18723 | include_mac_end, current_file, |
8fc3fc34 | 18724 | lh, comp_dir, |
36586728 | 18725 | section, section_is_gnu, is_dwz, |
8fc3fc34 TT |
18726 | offset_size, objfile, include_hash); |
18727 | ||
a036ba48 | 18728 | htab_remove_elt (include_hash, new_mac_ptr); |
8fc3fc34 | 18729 | } |
cf2c3c16 TT |
18730 | } |
18731 | break; | |
18732 | ||
2e276125 | 18733 | case DW_MACINFO_vendor_ext: |
cf2c3c16 TT |
18734 | if (!section_is_gnu) |
18735 | { | |
18736 | unsigned int bytes_read; | |
18737 | int constant; | |
2e276125 | 18738 | |
cf2c3c16 TT |
18739 | constant = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); |
18740 | mac_ptr += bytes_read; | |
18741 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
18742 | mac_ptr += bytes_read; | |
2e276125 | 18743 | |
cf2c3c16 TT |
18744 | /* We don't recognize any vendor extensions. */ |
18745 | break; | |
18746 | } | |
18747 | /* FALLTHROUGH */ | |
18748 | ||
18749 | default: | |
18750 | mac_ptr = skip_unknown_opcode (macinfo_type, opcode_definitions, | |
f664829e | 18751 | mac_ptr, mac_end, abfd, offset_size, |
cf2c3c16 TT |
18752 | section); |
18753 | if (mac_ptr == NULL) | |
18754 | return; | |
18755 | break; | |
2e276125 | 18756 | } |
757a13d0 | 18757 | } while (macinfo_type != 0); |
2e276125 | 18758 | } |
8e19ed76 | 18759 | |
cf2c3c16 | 18760 | static void |
09262596 | 18761 | dwarf_decode_macros (struct dwarf2_cu *cu, unsigned int offset, |
15d034d0 | 18762 | const char *comp_dir, int section_is_gnu) |
cf2c3c16 | 18763 | { |
bb5ed363 | 18764 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
09262596 DE |
18765 | struct line_header *lh = cu->line_header; |
18766 | bfd *abfd; | |
cf2c3c16 TT |
18767 | gdb_byte *mac_ptr, *mac_end; |
18768 | struct macro_source_file *current_file = 0; | |
18769 | enum dwarf_macro_record_type macinfo_type; | |
18770 | unsigned int offset_size = cu->header.offset_size; | |
18771 | gdb_byte *opcode_definitions[256]; | |
8fc3fc34 TT |
18772 | struct cleanup *cleanup; |
18773 | htab_t include_hash; | |
18774 | void **slot; | |
09262596 DE |
18775 | struct dwarf2_section_info *section; |
18776 | const char *section_name; | |
18777 | ||
18778 | if (cu->dwo_unit != NULL) | |
18779 | { | |
18780 | if (section_is_gnu) | |
18781 | { | |
18782 | section = &cu->dwo_unit->dwo_file->sections.macro; | |
18783 | section_name = ".debug_macro.dwo"; | |
18784 | } | |
18785 | else | |
18786 | { | |
18787 | section = &cu->dwo_unit->dwo_file->sections.macinfo; | |
18788 | section_name = ".debug_macinfo.dwo"; | |
18789 | } | |
18790 | } | |
18791 | else | |
18792 | { | |
18793 | if (section_is_gnu) | |
18794 | { | |
18795 | section = &dwarf2_per_objfile->macro; | |
18796 | section_name = ".debug_macro"; | |
18797 | } | |
18798 | else | |
18799 | { | |
18800 | section = &dwarf2_per_objfile->macinfo; | |
18801 | section_name = ".debug_macinfo"; | |
18802 | } | |
18803 | } | |
cf2c3c16 | 18804 | |
bb5ed363 | 18805 | dwarf2_read_section (objfile, section); |
cf2c3c16 TT |
18806 | if (section->buffer == NULL) |
18807 | { | |
fceca515 | 18808 | complaint (&symfile_complaints, _("missing %s section"), section_name); |
cf2c3c16 TT |
18809 | return; |
18810 | } | |
09262596 | 18811 | abfd = section->asection->owner; |
cf2c3c16 TT |
18812 | |
18813 | /* First pass: Find the name of the base filename. | |
18814 | This filename is needed in order to process all macros whose definition | |
18815 | (or undefinition) comes from the command line. These macros are defined | |
18816 | before the first DW_MACINFO_start_file entry, and yet still need to be | |
18817 | associated to the base file. | |
18818 | ||
18819 | To determine the base file name, we scan the macro definitions until we | |
18820 | reach the first DW_MACINFO_start_file entry. We then initialize | |
18821 | CURRENT_FILE accordingly so that any macro definition found before the | |
18822 | first DW_MACINFO_start_file can still be associated to the base file. */ | |
18823 | ||
18824 | mac_ptr = section->buffer + offset; | |
18825 | mac_end = section->buffer + section->size; | |
18826 | ||
18827 | mac_ptr = dwarf_parse_macro_header (opcode_definitions, abfd, mac_ptr, | |
18828 | &offset_size, section_is_gnu); | |
18829 | if (mac_ptr == NULL) | |
18830 | { | |
18831 | /* We already issued a complaint. */ | |
18832 | return; | |
18833 | } | |
18834 | ||
18835 | do | |
18836 | { | |
18837 | /* Do we at least have room for a macinfo type byte? */ | |
18838 | if (mac_ptr >= mac_end) | |
18839 | { | |
18840 | /* Complaint is printed during the second pass as GDB will probably | |
18841 | stop the first pass earlier upon finding | |
18842 | DW_MACINFO_start_file. */ | |
18843 | break; | |
18844 | } | |
18845 | ||
18846 | macinfo_type = read_1_byte (abfd, mac_ptr); | |
18847 | mac_ptr++; | |
18848 | ||
18849 | /* Note that we rely on the fact that the corresponding GNU and | |
18850 | DWARF constants are the same. */ | |
18851 | switch (macinfo_type) | |
18852 | { | |
18853 | /* A zero macinfo type indicates the end of the macro | |
18854 | information. */ | |
18855 | case 0: | |
18856 | break; | |
18857 | ||
18858 | case DW_MACRO_GNU_define: | |
18859 | case DW_MACRO_GNU_undef: | |
18860 | /* Only skip the data by MAC_PTR. */ | |
18861 | { | |
18862 | unsigned int bytes_read; | |
18863 | ||
18864 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
18865 | mac_ptr += bytes_read; | |
18866 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
18867 | mac_ptr += bytes_read; | |
18868 | } | |
18869 | break; | |
18870 | ||
18871 | case DW_MACRO_GNU_start_file: | |
18872 | { | |
18873 | unsigned int bytes_read; | |
18874 | int line, file; | |
18875 | ||
18876 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
18877 | mac_ptr += bytes_read; | |
18878 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
18879 | mac_ptr += bytes_read; | |
18880 | ||
18881 | current_file = macro_start_file (file, line, current_file, | |
bb5ed363 | 18882 | comp_dir, lh, objfile); |
cf2c3c16 TT |
18883 | } |
18884 | break; | |
18885 | ||
18886 | case DW_MACRO_GNU_end_file: | |
18887 | /* No data to skip by MAC_PTR. */ | |
18888 | break; | |
18889 | ||
18890 | case DW_MACRO_GNU_define_indirect: | |
18891 | case DW_MACRO_GNU_undef_indirect: | |
f7a35f02 TT |
18892 | case DW_MACRO_GNU_define_indirect_alt: |
18893 | case DW_MACRO_GNU_undef_indirect_alt: | |
cf2c3c16 TT |
18894 | { |
18895 | unsigned int bytes_read; | |
18896 | ||
18897 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
18898 | mac_ptr += bytes_read; | |
18899 | mac_ptr += offset_size; | |
18900 | } | |
18901 | break; | |
18902 | ||
18903 | case DW_MACRO_GNU_transparent_include: | |
f7a35f02 | 18904 | case DW_MACRO_GNU_transparent_include_alt: |
cf2c3c16 TT |
18905 | /* Note that, according to the spec, a transparent include |
18906 | chain cannot call DW_MACRO_GNU_start_file. So, we can just | |
18907 | skip this opcode. */ | |
18908 | mac_ptr += offset_size; | |
18909 | break; | |
18910 | ||
18911 | case DW_MACINFO_vendor_ext: | |
18912 | /* Only skip the data by MAC_PTR. */ | |
18913 | if (!section_is_gnu) | |
18914 | { | |
18915 | unsigned int bytes_read; | |
18916 | ||
18917 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
18918 | mac_ptr += bytes_read; | |
18919 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
18920 | mac_ptr += bytes_read; | |
18921 | } | |
18922 | /* FALLTHROUGH */ | |
18923 | ||
18924 | default: | |
18925 | mac_ptr = skip_unknown_opcode (macinfo_type, opcode_definitions, | |
f664829e | 18926 | mac_ptr, mac_end, abfd, offset_size, |
cf2c3c16 TT |
18927 | section); |
18928 | if (mac_ptr == NULL) | |
18929 | return; | |
18930 | break; | |
18931 | } | |
18932 | } while (macinfo_type != 0 && current_file == NULL); | |
18933 | ||
18934 | /* Second pass: Process all entries. | |
18935 | ||
18936 | Use the AT_COMMAND_LINE flag to determine whether we are still processing | |
18937 | command-line macro definitions/undefinitions. This flag is unset when we | |
18938 | reach the first DW_MACINFO_start_file entry. */ | |
18939 | ||
8fc3fc34 TT |
18940 | include_hash = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, |
18941 | NULL, xcalloc, xfree); | |
18942 | cleanup = make_cleanup_htab_delete (include_hash); | |
18943 | mac_ptr = section->buffer + offset; | |
18944 | slot = htab_find_slot (include_hash, mac_ptr, INSERT); | |
18945 | *slot = mac_ptr; | |
18946 | dwarf_decode_macro_bytes (abfd, mac_ptr, mac_end, | |
36586728 TT |
18947 | current_file, lh, comp_dir, section, |
18948 | section_is_gnu, 0, | |
8fc3fc34 TT |
18949 | offset_size, objfile, include_hash); |
18950 | do_cleanups (cleanup); | |
cf2c3c16 TT |
18951 | } |
18952 | ||
8e19ed76 | 18953 | /* Check if the attribute's form is a DW_FORM_block* |
0963b4bd | 18954 | if so return true else false. */ |
380bca97 | 18955 | |
8e19ed76 PS |
18956 | static int |
18957 | attr_form_is_block (struct attribute *attr) | |
18958 | { | |
18959 | return (attr == NULL ? 0 : | |
18960 | attr->form == DW_FORM_block1 | |
18961 | || attr->form == DW_FORM_block2 | |
18962 | || attr->form == DW_FORM_block4 | |
2dc7f7b3 TT |
18963 | || attr->form == DW_FORM_block |
18964 | || attr->form == DW_FORM_exprloc); | |
8e19ed76 | 18965 | } |
4c2df51b | 18966 | |
c6a0999f JB |
18967 | /* Return non-zero if ATTR's value is a section offset --- classes |
18968 | lineptr, loclistptr, macptr or rangelistptr --- or zero, otherwise. | |
18969 | You may use DW_UNSND (attr) to retrieve such offsets. | |
18970 | ||
18971 | Section 7.5.4, "Attribute Encodings", explains that no attribute | |
18972 | may have a value that belongs to more than one of these classes; it | |
18973 | would be ambiguous if we did, because we use the same forms for all | |
18974 | of them. */ | |
380bca97 | 18975 | |
3690dd37 JB |
18976 | static int |
18977 | attr_form_is_section_offset (struct attribute *attr) | |
18978 | { | |
18979 | return (attr->form == DW_FORM_data4 | |
2dc7f7b3 TT |
18980 | || attr->form == DW_FORM_data8 |
18981 | || attr->form == DW_FORM_sec_offset); | |
3690dd37 JB |
18982 | } |
18983 | ||
3690dd37 JB |
18984 | /* Return non-zero if ATTR's value falls in the 'constant' class, or |
18985 | zero otherwise. When this function returns true, you can apply | |
18986 | dwarf2_get_attr_constant_value to it. | |
18987 | ||
18988 | However, note that for some attributes you must check | |
18989 | attr_form_is_section_offset before using this test. DW_FORM_data4 | |
18990 | and DW_FORM_data8 are members of both the constant class, and of | |
18991 | the classes that contain offsets into other debug sections | |
18992 | (lineptr, loclistptr, macptr or rangelistptr). The DWARF spec says | |
18993 | that, if an attribute's can be either a constant or one of the | |
18994 | section offset classes, DW_FORM_data4 and DW_FORM_data8 should be | |
18995 | taken as section offsets, not constants. */ | |
380bca97 | 18996 | |
3690dd37 JB |
18997 | static int |
18998 | attr_form_is_constant (struct attribute *attr) | |
18999 | { | |
19000 | switch (attr->form) | |
19001 | { | |
19002 | case DW_FORM_sdata: | |
19003 | case DW_FORM_udata: | |
19004 | case DW_FORM_data1: | |
19005 | case DW_FORM_data2: | |
19006 | case DW_FORM_data4: | |
19007 | case DW_FORM_data8: | |
19008 | return 1; | |
19009 | default: | |
19010 | return 0; | |
19011 | } | |
19012 | } | |
19013 | ||
3019eac3 DE |
19014 | /* Return the .debug_loc section to use for CU. |
19015 | For DWO files use .debug_loc.dwo. */ | |
19016 | ||
19017 | static struct dwarf2_section_info * | |
19018 | cu_debug_loc_section (struct dwarf2_cu *cu) | |
19019 | { | |
19020 | if (cu->dwo_unit) | |
19021 | return &cu->dwo_unit->dwo_file->sections.loc; | |
19022 | return &dwarf2_per_objfile->loc; | |
19023 | } | |
19024 | ||
8cf6f0b1 TT |
19025 | /* A helper function that fills in a dwarf2_loclist_baton. */ |
19026 | ||
19027 | static void | |
19028 | fill_in_loclist_baton (struct dwarf2_cu *cu, | |
19029 | struct dwarf2_loclist_baton *baton, | |
19030 | struct attribute *attr) | |
19031 | { | |
3019eac3 DE |
19032 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
19033 | ||
19034 | dwarf2_read_section (dwarf2_per_objfile->objfile, section); | |
8cf6f0b1 TT |
19035 | |
19036 | baton->per_cu = cu->per_cu; | |
19037 | gdb_assert (baton->per_cu); | |
19038 | /* We don't know how long the location list is, but make sure we | |
19039 | don't run off the edge of the section. */ | |
3019eac3 DE |
19040 | baton->size = section->size - DW_UNSND (attr); |
19041 | baton->data = section->buffer + DW_UNSND (attr); | |
8cf6f0b1 | 19042 | baton->base_address = cu->base_address; |
f664829e | 19043 | baton->from_dwo = cu->dwo_unit != NULL; |
8cf6f0b1 TT |
19044 | } |
19045 | ||
4c2df51b DJ |
19046 | static void |
19047 | dwarf2_symbol_mark_computed (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 19048 | struct dwarf2_cu *cu) |
4c2df51b | 19049 | { |
bb5ed363 | 19050 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3019eac3 | 19051 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
bb5ed363 | 19052 | |
3690dd37 | 19053 | if (attr_form_is_section_offset (attr) |
3019eac3 | 19054 | /* .debug_loc{,.dwo} may not exist at all, or the offset may be outside |
99bcc461 DJ |
19055 | the section. If so, fall through to the complaint in the |
19056 | other branch. */ | |
3019eac3 | 19057 | && DW_UNSND (attr) < dwarf2_section_size (objfile, section)) |
4c2df51b | 19058 | { |
0d53c4c4 | 19059 | struct dwarf2_loclist_baton *baton; |
4c2df51b | 19060 | |
bb5ed363 | 19061 | baton = obstack_alloc (&objfile->objfile_obstack, |
0d53c4c4 | 19062 | sizeof (struct dwarf2_loclist_baton)); |
4c2df51b | 19063 | |
8cf6f0b1 | 19064 | fill_in_loclist_baton (cu, baton, attr); |
be391dca | 19065 | |
d00adf39 | 19066 | if (cu->base_known == 0) |
0d53c4c4 | 19067 | complaint (&symfile_complaints, |
3e43a32a MS |
19068 | _("Location list used without " |
19069 | "specifying the CU base address.")); | |
4c2df51b | 19070 | |
768a979c | 19071 | SYMBOL_COMPUTED_OPS (sym) = &dwarf2_loclist_funcs; |
0d53c4c4 DJ |
19072 | SYMBOL_LOCATION_BATON (sym) = baton; |
19073 | } | |
19074 | else | |
19075 | { | |
19076 | struct dwarf2_locexpr_baton *baton; | |
19077 | ||
bb5ed363 | 19078 | baton = obstack_alloc (&objfile->objfile_obstack, |
0d53c4c4 | 19079 | sizeof (struct dwarf2_locexpr_baton)); |
ae0d2f24 UW |
19080 | baton->per_cu = cu->per_cu; |
19081 | gdb_assert (baton->per_cu); | |
0d53c4c4 DJ |
19082 | |
19083 | if (attr_form_is_block (attr)) | |
19084 | { | |
19085 | /* Note that we're just copying the block's data pointer | |
19086 | here, not the actual data. We're still pointing into the | |
6502dd73 DJ |
19087 | info_buffer for SYM's objfile; right now we never release |
19088 | that buffer, but when we do clean up properly this may | |
19089 | need to change. */ | |
0d53c4c4 DJ |
19090 | baton->size = DW_BLOCK (attr)->size; |
19091 | baton->data = DW_BLOCK (attr)->data; | |
19092 | } | |
19093 | else | |
19094 | { | |
19095 | dwarf2_invalid_attrib_class_complaint ("location description", | |
19096 | SYMBOL_NATURAL_NAME (sym)); | |
19097 | baton->size = 0; | |
0d53c4c4 | 19098 | } |
6e70227d | 19099 | |
768a979c | 19100 | SYMBOL_COMPUTED_OPS (sym) = &dwarf2_locexpr_funcs; |
0d53c4c4 DJ |
19101 | SYMBOL_LOCATION_BATON (sym) = baton; |
19102 | } | |
4c2df51b | 19103 | } |
6502dd73 | 19104 | |
9aa1f1e3 TT |
19105 | /* Return the OBJFILE associated with the compilation unit CU. If CU |
19106 | came from a separate debuginfo file, then the master objfile is | |
19107 | returned. */ | |
ae0d2f24 UW |
19108 | |
19109 | struct objfile * | |
19110 | dwarf2_per_cu_objfile (struct dwarf2_per_cu_data *per_cu) | |
19111 | { | |
9291a0cd | 19112 | struct objfile *objfile = per_cu->objfile; |
ae0d2f24 UW |
19113 | |
19114 | /* Return the master objfile, so that we can report and look up the | |
19115 | correct file containing this variable. */ | |
19116 | if (objfile->separate_debug_objfile_backlink) | |
19117 | objfile = objfile->separate_debug_objfile_backlink; | |
19118 | ||
19119 | return objfile; | |
19120 | } | |
19121 | ||
96408a79 SA |
19122 | /* Return comp_unit_head for PER_CU, either already available in PER_CU->CU |
19123 | (CU_HEADERP is unused in such case) or prepare a temporary copy at | |
19124 | CU_HEADERP first. */ | |
19125 | ||
19126 | static const struct comp_unit_head * | |
19127 | per_cu_header_read_in (struct comp_unit_head *cu_headerp, | |
19128 | struct dwarf2_per_cu_data *per_cu) | |
19129 | { | |
96408a79 SA |
19130 | gdb_byte *info_ptr; |
19131 | ||
19132 | if (per_cu->cu) | |
19133 | return &per_cu->cu->header; | |
19134 | ||
0bc3a05c | 19135 | info_ptr = per_cu->info_or_types_section->buffer + per_cu->offset.sect_off; |
96408a79 SA |
19136 | |
19137 | memset (cu_headerp, 0, sizeof (*cu_headerp)); | |
0bc3a05c | 19138 | read_comp_unit_head (cu_headerp, info_ptr, per_cu->objfile->obfd); |
96408a79 SA |
19139 | |
19140 | return cu_headerp; | |
19141 | } | |
19142 | ||
ae0d2f24 UW |
19143 | /* Return the address size given in the compilation unit header for CU. */ |
19144 | ||
98714339 | 19145 | int |
ae0d2f24 UW |
19146 | dwarf2_per_cu_addr_size (struct dwarf2_per_cu_data *per_cu) |
19147 | { | |
96408a79 SA |
19148 | struct comp_unit_head cu_header_local; |
19149 | const struct comp_unit_head *cu_headerp; | |
c471e790 | 19150 | |
96408a79 SA |
19151 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); |
19152 | ||
19153 | return cu_headerp->addr_size; | |
ae0d2f24 UW |
19154 | } |
19155 | ||
9eae7c52 TT |
19156 | /* Return the offset size given in the compilation unit header for CU. */ |
19157 | ||
19158 | int | |
19159 | dwarf2_per_cu_offset_size (struct dwarf2_per_cu_data *per_cu) | |
19160 | { | |
96408a79 SA |
19161 | struct comp_unit_head cu_header_local; |
19162 | const struct comp_unit_head *cu_headerp; | |
9c6c53f7 | 19163 | |
96408a79 SA |
19164 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); |
19165 | ||
19166 | return cu_headerp->offset_size; | |
19167 | } | |
19168 | ||
19169 | /* See its dwarf2loc.h declaration. */ | |
19170 | ||
19171 | int | |
19172 | dwarf2_per_cu_ref_addr_size (struct dwarf2_per_cu_data *per_cu) | |
19173 | { | |
19174 | struct comp_unit_head cu_header_local; | |
19175 | const struct comp_unit_head *cu_headerp; | |
19176 | ||
19177 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); | |
19178 | ||
19179 | if (cu_headerp->version == 2) | |
19180 | return cu_headerp->addr_size; | |
19181 | else | |
19182 | return cu_headerp->offset_size; | |
181cebd4 JK |
19183 | } |
19184 | ||
9aa1f1e3 TT |
19185 | /* Return the text offset of the CU. The returned offset comes from |
19186 | this CU's objfile. If this objfile came from a separate debuginfo | |
19187 | file, then the offset may be different from the corresponding | |
19188 | offset in the parent objfile. */ | |
19189 | ||
19190 | CORE_ADDR | |
19191 | dwarf2_per_cu_text_offset (struct dwarf2_per_cu_data *per_cu) | |
19192 | { | |
bb3fa9d0 | 19193 | struct objfile *objfile = per_cu->objfile; |
9aa1f1e3 TT |
19194 | |
19195 | return ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
19196 | } | |
19197 | ||
348e048f DE |
19198 | /* Locate the .debug_info compilation unit from CU's objfile which contains |
19199 | the DIE at OFFSET. Raises an error on failure. */ | |
ae038cb0 DJ |
19200 | |
19201 | static struct dwarf2_per_cu_data * | |
b64f50a1 | 19202 | dwarf2_find_containing_comp_unit (sect_offset offset, |
36586728 | 19203 | unsigned int offset_in_dwz, |
ae038cb0 DJ |
19204 | struct objfile *objfile) |
19205 | { | |
19206 | struct dwarf2_per_cu_data *this_cu; | |
19207 | int low, high; | |
36586728 | 19208 | const sect_offset *cu_off; |
ae038cb0 | 19209 | |
ae038cb0 DJ |
19210 | low = 0; |
19211 | high = dwarf2_per_objfile->n_comp_units - 1; | |
19212 | while (high > low) | |
19213 | { | |
36586728 | 19214 | struct dwarf2_per_cu_data *mid_cu; |
ae038cb0 | 19215 | int mid = low + (high - low) / 2; |
9a619af0 | 19216 | |
36586728 TT |
19217 | mid_cu = dwarf2_per_objfile->all_comp_units[mid]; |
19218 | cu_off = &mid_cu->offset; | |
19219 | if (mid_cu->is_dwz > offset_in_dwz | |
19220 | || (mid_cu->is_dwz == offset_in_dwz | |
19221 | && cu_off->sect_off >= offset.sect_off)) | |
ae038cb0 DJ |
19222 | high = mid; |
19223 | else | |
19224 | low = mid + 1; | |
19225 | } | |
19226 | gdb_assert (low == high); | |
36586728 TT |
19227 | this_cu = dwarf2_per_objfile->all_comp_units[low]; |
19228 | cu_off = &this_cu->offset; | |
19229 | if (this_cu->is_dwz != offset_in_dwz || cu_off->sect_off > offset.sect_off) | |
ae038cb0 | 19230 | { |
36586728 | 19231 | if (low == 0 || this_cu->is_dwz != offset_in_dwz) |
8a3fe4f8 AC |
19232 | error (_("Dwarf Error: could not find partial DIE containing " |
19233 | "offset 0x%lx [in module %s]"), | |
b64f50a1 | 19234 | (long) offset.sect_off, bfd_get_filename (objfile->obfd)); |
10b3939b | 19235 | |
b64f50a1 JK |
19236 | gdb_assert (dwarf2_per_objfile->all_comp_units[low-1]->offset.sect_off |
19237 | <= offset.sect_off); | |
ae038cb0 DJ |
19238 | return dwarf2_per_objfile->all_comp_units[low-1]; |
19239 | } | |
19240 | else | |
19241 | { | |
19242 | this_cu = dwarf2_per_objfile->all_comp_units[low]; | |
19243 | if (low == dwarf2_per_objfile->n_comp_units - 1 | |
b64f50a1 JK |
19244 | && offset.sect_off >= this_cu->offset.sect_off + this_cu->length) |
19245 | error (_("invalid dwarf2 offset %u"), offset.sect_off); | |
19246 | gdb_assert (offset.sect_off < this_cu->offset.sect_off + this_cu->length); | |
ae038cb0 DJ |
19247 | return this_cu; |
19248 | } | |
19249 | } | |
19250 | ||
23745b47 | 19251 | /* Initialize dwarf2_cu CU, owned by PER_CU. */ |
93311388 | 19252 | |
9816fde3 | 19253 | static void |
23745b47 | 19254 | init_one_comp_unit (struct dwarf2_cu *cu, struct dwarf2_per_cu_data *per_cu) |
93311388 | 19255 | { |
9816fde3 | 19256 | memset (cu, 0, sizeof (*cu)); |
23745b47 DE |
19257 | per_cu->cu = cu; |
19258 | cu->per_cu = per_cu; | |
19259 | cu->objfile = per_cu->objfile; | |
93311388 | 19260 | obstack_init (&cu->comp_unit_obstack); |
9816fde3 JK |
19261 | } |
19262 | ||
19263 | /* Initialize basic fields of dwarf_cu CU according to DIE COMP_UNIT_DIE. */ | |
19264 | ||
19265 | static void | |
95554aad TT |
19266 | prepare_one_comp_unit (struct dwarf2_cu *cu, struct die_info *comp_unit_die, |
19267 | enum language pretend_language) | |
9816fde3 JK |
19268 | { |
19269 | struct attribute *attr; | |
19270 | ||
19271 | /* Set the language we're debugging. */ | |
19272 | attr = dwarf2_attr (comp_unit_die, DW_AT_language, cu); | |
19273 | if (attr) | |
19274 | set_cu_language (DW_UNSND (attr), cu); | |
19275 | else | |
9cded63f | 19276 | { |
95554aad | 19277 | cu->language = pretend_language; |
9cded63f TT |
19278 | cu->language_defn = language_def (cu->language); |
19279 | } | |
dee91e82 DE |
19280 | |
19281 | attr = dwarf2_attr (comp_unit_die, DW_AT_producer, cu); | |
19282 | if (attr) | |
19283 | cu->producer = DW_STRING (attr); | |
93311388 DE |
19284 | } |
19285 | ||
ae038cb0 DJ |
19286 | /* Release one cached compilation unit, CU. We unlink it from the tree |
19287 | of compilation units, but we don't remove it from the read_in_chain; | |
93311388 DE |
19288 | the caller is responsible for that. |
19289 | NOTE: DATA is a void * because this function is also used as a | |
19290 | cleanup routine. */ | |
ae038cb0 DJ |
19291 | |
19292 | static void | |
68dc6402 | 19293 | free_heap_comp_unit (void *data) |
ae038cb0 DJ |
19294 | { |
19295 | struct dwarf2_cu *cu = data; | |
19296 | ||
23745b47 DE |
19297 | gdb_assert (cu->per_cu != NULL); |
19298 | cu->per_cu->cu = NULL; | |
ae038cb0 DJ |
19299 | cu->per_cu = NULL; |
19300 | ||
19301 | obstack_free (&cu->comp_unit_obstack, NULL); | |
19302 | ||
19303 | xfree (cu); | |
19304 | } | |
19305 | ||
72bf9492 | 19306 | /* This cleanup function is passed the address of a dwarf2_cu on the stack |
ae038cb0 | 19307 | when we're finished with it. We can't free the pointer itself, but be |
dee91e82 | 19308 | sure to unlink it from the cache. Also release any associated storage. */ |
72bf9492 DJ |
19309 | |
19310 | static void | |
19311 | free_stack_comp_unit (void *data) | |
19312 | { | |
19313 | struct dwarf2_cu *cu = data; | |
19314 | ||
23745b47 DE |
19315 | gdb_assert (cu->per_cu != NULL); |
19316 | cu->per_cu->cu = NULL; | |
19317 | cu->per_cu = NULL; | |
19318 | ||
72bf9492 DJ |
19319 | obstack_free (&cu->comp_unit_obstack, NULL); |
19320 | cu->partial_dies = NULL; | |
ae038cb0 DJ |
19321 | } |
19322 | ||
19323 | /* Free all cached compilation units. */ | |
19324 | ||
19325 | static void | |
19326 | free_cached_comp_units (void *data) | |
19327 | { | |
19328 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
19329 | ||
19330 | per_cu = dwarf2_per_objfile->read_in_chain; | |
19331 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
19332 | while (per_cu != NULL) | |
19333 | { | |
19334 | struct dwarf2_per_cu_data *next_cu; | |
19335 | ||
19336 | next_cu = per_cu->cu->read_in_chain; | |
19337 | ||
68dc6402 | 19338 | free_heap_comp_unit (per_cu->cu); |
ae038cb0 DJ |
19339 | *last_chain = next_cu; |
19340 | ||
19341 | per_cu = next_cu; | |
19342 | } | |
19343 | } | |
19344 | ||
19345 | /* Increase the age counter on each cached compilation unit, and free | |
19346 | any that are too old. */ | |
19347 | ||
19348 | static void | |
19349 | age_cached_comp_units (void) | |
19350 | { | |
19351 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
19352 | ||
19353 | dwarf2_clear_marks (dwarf2_per_objfile->read_in_chain); | |
19354 | per_cu = dwarf2_per_objfile->read_in_chain; | |
19355 | while (per_cu != NULL) | |
19356 | { | |
19357 | per_cu->cu->last_used ++; | |
19358 | if (per_cu->cu->last_used <= dwarf2_max_cache_age) | |
19359 | dwarf2_mark (per_cu->cu); | |
19360 | per_cu = per_cu->cu->read_in_chain; | |
19361 | } | |
19362 | ||
19363 | per_cu = dwarf2_per_objfile->read_in_chain; | |
19364 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
19365 | while (per_cu != NULL) | |
19366 | { | |
19367 | struct dwarf2_per_cu_data *next_cu; | |
19368 | ||
19369 | next_cu = per_cu->cu->read_in_chain; | |
19370 | ||
19371 | if (!per_cu->cu->mark) | |
19372 | { | |
68dc6402 | 19373 | free_heap_comp_unit (per_cu->cu); |
ae038cb0 DJ |
19374 | *last_chain = next_cu; |
19375 | } | |
19376 | else | |
19377 | last_chain = &per_cu->cu->read_in_chain; | |
19378 | ||
19379 | per_cu = next_cu; | |
19380 | } | |
19381 | } | |
19382 | ||
19383 | /* Remove a single compilation unit from the cache. */ | |
19384 | ||
19385 | static void | |
dee91e82 | 19386 | free_one_cached_comp_unit (struct dwarf2_per_cu_data *target_per_cu) |
ae038cb0 DJ |
19387 | { |
19388 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
19389 | ||
19390 | per_cu = dwarf2_per_objfile->read_in_chain; | |
19391 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
19392 | while (per_cu != NULL) | |
19393 | { | |
19394 | struct dwarf2_per_cu_data *next_cu; | |
19395 | ||
19396 | next_cu = per_cu->cu->read_in_chain; | |
19397 | ||
dee91e82 | 19398 | if (per_cu == target_per_cu) |
ae038cb0 | 19399 | { |
68dc6402 | 19400 | free_heap_comp_unit (per_cu->cu); |
dee91e82 | 19401 | per_cu->cu = NULL; |
ae038cb0 DJ |
19402 | *last_chain = next_cu; |
19403 | break; | |
19404 | } | |
19405 | else | |
19406 | last_chain = &per_cu->cu->read_in_chain; | |
19407 | ||
19408 | per_cu = next_cu; | |
19409 | } | |
19410 | } | |
19411 | ||
fe3e1990 DJ |
19412 | /* Release all extra memory associated with OBJFILE. */ |
19413 | ||
19414 | void | |
19415 | dwarf2_free_objfile (struct objfile *objfile) | |
19416 | { | |
19417 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); | |
19418 | ||
19419 | if (dwarf2_per_objfile == NULL) | |
19420 | return; | |
19421 | ||
19422 | /* Cached DIE trees use xmalloc and the comp_unit_obstack. */ | |
19423 | free_cached_comp_units (NULL); | |
19424 | ||
7b9f3c50 DE |
19425 | if (dwarf2_per_objfile->quick_file_names_table) |
19426 | htab_delete (dwarf2_per_objfile->quick_file_names_table); | |
9291a0cd | 19427 | |
fe3e1990 DJ |
19428 | /* Everything else should be on the objfile obstack. */ |
19429 | } | |
19430 | ||
dee91e82 DE |
19431 | /* A set of CU "per_cu" pointer, DIE offset, and GDB type pointer. |
19432 | We store these in a hash table separate from the DIEs, and preserve them | |
19433 | when the DIEs are flushed out of cache. | |
19434 | ||
19435 | The CU "per_cu" pointer is needed because offset alone is not enough to | |
3019eac3 DE |
19436 | uniquely identify the type. A file may have multiple .debug_types sections, |
19437 | or the type may come from a DWO file. We have to use something in | |
19438 | dwarf2_per_cu_data (or the pointer to it) because we can enter the lookup | |
19439 | routine, get_die_type_at_offset, from outside this file, and thus won't | |
19440 | necessarily have PER_CU->cu. Fortunately, PER_CU is stable for the life | |
19441 | of the objfile. */ | |
1c379e20 | 19442 | |
dee91e82 | 19443 | struct dwarf2_per_cu_offset_and_type |
1c379e20 | 19444 | { |
dee91e82 | 19445 | const struct dwarf2_per_cu_data *per_cu; |
b64f50a1 | 19446 | sect_offset offset; |
1c379e20 DJ |
19447 | struct type *type; |
19448 | }; | |
19449 | ||
dee91e82 | 19450 | /* Hash function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
19451 | |
19452 | static hashval_t | |
dee91e82 | 19453 | per_cu_offset_and_type_hash (const void *item) |
1c379e20 | 19454 | { |
dee91e82 | 19455 | const struct dwarf2_per_cu_offset_and_type *ofs = item; |
9a619af0 | 19456 | |
dee91e82 | 19457 | return (uintptr_t) ofs->per_cu + ofs->offset.sect_off; |
1c379e20 DJ |
19458 | } |
19459 | ||
dee91e82 | 19460 | /* Equality function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
19461 | |
19462 | static int | |
dee91e82 | 19463 | per_cu_offset_and_type_eq (const void *item_lhs, const void *item_rhs) |
1c379e20 | 19464 | { |
dee91e82 DE |
19465 | const struct dwarf2_per_cu_offset_and_type *ofs_lhs = item_lhs; |
19466 | const struct dwarf2_per_cu_offset_and_type *ofs_rhs = item_rhs; | |
9a619af0 | 19467 | |
dee91e82 DE |
19468 | return (ofs_lhs->per_cu == ofs_rhs->per_cu |
19469 | && ofs_lhs->offset.sect_off == ofs_rhs->offset.sect_off); | |
1c379e20 DJ |
19470 | } |
19471 | ||
19472 | /* Set the type associated with DIE to TYPE. Save it in CU's hash | |
7e314c57 JK |
19473 | table if necessary. For convenience, return TYPE. |
19474 | ||
19475 | The DIEs reading must have careful ordering to: | |
19476 | * Not cause infite loops trying to read in DIEs as a prerequisite for | |
19477 | reading current DIE. | |
19478 | * Not trying to dereference contents of still incompletely read in types | |
19479 | while reading in other DIEs. | |
19480 | * Enable referencing still incompletely read in types just by a pointer to | |
19481 | the type without accessing its fields. | |
19482 | ||
19483 | Therefore caller should follow these rules: | |
19484 | * Try to fetch any prerequisite types we may need to build this DIE type | |
19485 | before building the type and calling set_die_type. | |
e71ec853 | 19486 | * After building type call set_die_type for current DIE as soon as |
7e314c57 JK |
19487 | possible before fetching more types to complete the current type. |
19488 | * Make the type as complete as possible before fetching more types. */ | |
1c379e20 | 19489 | |
f792889a | 19490 | static struct type * |
1c379e20 DJ |
19491 | set_die_type (struct die_info *die, struct type *type, struct dwarf2_cu *cu) |
19492 | { | |
dee91e82 | 19493 | struct dwarf2_per_cu_offset_and_type **slot, ofs; |
673bfd45 | 19494 | struct objfile *objfile = cu->objfile; |
1c379e20 | 19495 | |
b4ba55a1 JB |
19496 | /* For Ada types, make sure that the gnat-specific data is always |
19497 | initialized (if not already set). There are a few types where | |
19498 | we should not be doing so, because the type-specific area is | |
19499 | already used to hold some other piece of info (eg: TYPE_CODE_FLT | |
19500 | where the type-specific area is used to store the floatformat). | |
19501 | But this is not a problem, because the gnat-specific information | |
19502 | is actually not needed for these types. */ | |
19503 | if (need_gnat_info (cu) | |
19504 | && TYPE_CODE (type) != TYPE_CODE_FUNC | |
19505 | && TYPE_CODE (type) != TYPE_CODE_FLT | |
19506 | && !HAVE_GNAT_AUX_INFO (type)) | |
19507 | INIT_GNAT_SPECIFIC (type); | |
19508 | ||
dee91e82 | 19509 | if (dwarf2_per_objfile->die_type_hash == NULL) |
f792889a | 19510 | { |
dee91e82 DE |
19511 | dwarf2_per_objfile->die_type_hash = |
19512 | htab_create_alloc_ex (127, | |
19513 | per_cu_offset_and_type_hash, | |
19514 | per_cu_offset_and_type_eq, | |
19515 | NULL, | |
19516 | &objfile->objfile_obstack, | |
19517 | hashtab_obstack_allocate, | |
19518 | dummy_obstack_deallocate); | |
f792889a | 19519 | } |
1c379e20 | 19520 | |
dee91e82 | 19521 | ofs.per_cu = cu->per_cu; |
1c379e20 DJ |
19522 | ofs.offset = die->offset; |
19523 | ofs.type = type; | |
dee91e82 DE |
19524 | slot = (struct dwarf2_per_cu_offset_and_type **) |
19525 | htab_find_slot (dwarf2_per_objfile->die_type_hash, &ofs, INSERT); | |
7e314c57 JK |
19526 | if (*slot) |
19527 | complaint (&symfile_complaints, | |
19528 | _("A problem internal to GDB: DIE 0x%x has type already set"), | |
b64f50a1 | 19529 | die->offset.sect_off); |
673bfd45 | 19530 | *slot = obstack_alloc (&objfile->objfile_obstack, sizeof (**slot)); |
1c379e20 | 19531 | **slot = ofs; |
f792889a | 19532 | return type; |
1c379e20 DJ |
19533 | } |
19534 | ||
380bca97 | 19535 | /* Look up the type for the die at OFFSET in the appropriate type_hash |
673bfd45 | 19536 | table, or return NULL if the die does not have a saved type. */ |
1c379e20 DJ |
19537 | |
19538 | static struct type * | |
b64f50a1 | 19539 | get_die_type_at_offset (sect_offset offset, |
673bfd45 | 19540 | struct dwarf2_per_cu_data *per_cu) |
1c379e20 | 19541 | { |
dee91e82 | 19542 | struct dwarf2_per_cu_offset_and_type *slot, ofs; |
f792889a | 19543 | |
dee91e82 | 19544 | if (dwarf2_per_objfile->die_type_hash == NULL) |
f792889a | 19545 | return NULL; |
1c379e20 | 19546 | |
dee91e82 | 19547 | ofs.per_cu = per_cu; |
673bfd45 | 19548 | ofs.offset = offset; |
dee91e82 | 19549 | slot = htab_find (dwarf2_per_objfile->die_type_hash, &ofs); |
1c379e20 DJ |
19550 | if (slot) |
19551 | return slot->type; | |
19552 | else | |
19553 | return NULL; | |
19554 | } | |
19555 | ||
673bfd45 DE |
19556 | /* Look up the type for DIE in the appropriate type_hash table, |
19557 | or return NULL if DIE does not have a saved type. */ | |
19558 | ||
19559 | static struct type * | |
19560 | get_die_type (struct die_info *die, struct dwarf2_cu *cu) | |
19561 | { | |
19562 | return get_die_type_at_offset (die->offset, cu->per_cu); | |
19563 | } | |
19564 | ||
10b3939b DJ |
19565 | /* Add a dependence relationship from CU to REF_PER_CU. */ |
19566 | ||
19567 | static void | |
19568 | dwarf2_add_dependence (struct dwarf2_cu *cu, | |
19569 | struct dwarf2_per_cu_data *ref_per_cu) | |
19570 | { | |
19571 | void **slot; | |
19572 | ||
19573 | if (cu->dependencies == NULL) | |
19574 | cu->dependencies | |
19575 | = htab_create_alloc_ex (5, htab_hash_pointer, htab_eq_pointer, | |
19576 | NULL, &cu->comp_unit_obstack, | |
19577 | hashtab_obstack_allocate, | |
19578 | dummy_obstack_deallocate); | |
19579 | ||
19580 | slot = htab_find_slot (cu->dependencies, ref_per_cu, INSERT); | |
19581 | if (*slot == NULL) | |
19582 | *slot = ref_per_cu; | |
19583 | } | |
1c379e20 | 19584 | |
f504f079 DE |
19585 | /* Subroutine of dwarf2_mark to pass to htab_traverse. |
19586 | Set the mark field in every compilation unit in the | |
ae038cb0 DJ |
19587 | cache that we must keep because we are keeping CU. */ |
19588 | ||
10b3939b DJ |
19589 | static int |
19590 | dwarf2_mark_helper (void **slot, void *data) | |
19591 | { | |
19592 | struct dwarf2_per_cu_data *per_cu; | |
19593 | ||
19594 | per_cu = (struct dwarf2_per_cu_data *) *slot; | |
d07ed419 JK |
19595 | |
19596 | /* cu->dependencies references may not yet have been ever read if QUIT aborts | |
19597 | reading of the chain. As such dependencies remain valid it is not much | |
19598 | useful to track and undo them during QUIT cleanups. */ | |
19599 | if (per_cu->cu == NULL) | |
19600 | return 1; | |
19601 | ||
10b3939b DJ |
19602 | if (per_cu->cu->mark) |
19603 | return 1; | |
19604 | per_cu->cu->mark = 1; | |
19605 | ||
19606 | if (per_cu->cu->dependencies != NULL) | |
19607 | htab_traverse (per_cu->cu->dependencies, dwarf2_mark_helper, NULL); | |
19608 | ||
19609 | return 1; | |
19610 | } | |
19611 | ||
f504f079 DE |
19612 | /* Set the mark field in CU and in every other compilation unit in the |
19613 | cache that we must keep because we are keeping CU. */ | |
19614 | ||
ae038cb0 DJ |
19615 | static void |
19616 | dwarf2_mark (struct dwarf2_cu *cu) | |
19617 | { | |
19618 | if (cu->mark) | |
19619 | return; | |
19620 | cu->mark = 1; | |
10b3939b DJ |
19621 | if (cu->dependencies != NULL) |
19622 | htab_traverse (cu->dependencies, dwarf2_mark_helper, NULL); | |
ae038cb0 DJ |
19623 | } |
19624 | ||
19625 | static void | |
19626 | dwarf2_clear_marks (struct dwarf2_per_cu_data *per_cu) | |
19627 | { | |
19628 | while (per_cu) | |
19629 | { | |
19630 | per_cu->cu->mark = 0; | |
19631 | per_cu = per_cu->cu->read_in_chain; | |
19632 | } | |
72bf9492 DJ |
19633 | } |
19634 | ||
72bf9492 DJ |
19635 | /* Trivial hash function for partial_die_info: the hash value of a DIE |
19636 | is its offset in .debug_info for this objfile. */ | |
19637 | ||
19638 | static hashval_t | |
19639 | partial_die_hash (const void *item) | |
19640 | { | |
19641 | const struct partial_die_info *part_die = item; | |
9a619af0 | 19642 | |
b64f50a1 | 19643 | return part_die->offset.sect_off; |
72bf9492 DJ |
19644 | } |
19645 | ||
19646 | /* Trivial comparison function for partial_die_info structures: two DIEs | |
19647 | are equal if they have the same offset. */ | |
19648 | ||
19649 | static int | |
19650 | partial_die_eq (const void *item_lhs, const void *item_rhs) | |
19651 | { | |
19652 | const struct partial_die_info *part_die_lhs = item_lhs; | |
19653 | const struct partial_die_info *part_die_rhs = item_rhs; | |
9a619af0 | 19654 | |
b64f50a1 | 19655 | return part_die_lhs->offset.sect_off == part_die_rhs->offset.sect_off; |
72bf9492 DJ |
19656 | } |
19657 | ||
ae038cb0 DJ |
19658 | static struct cmd_list_element *set_dwarf2_cmdlist; |
19659 | static struct cmd_list_element *show_dwarf2_cmdlist; | |
19660 | ||
19661 | static void | |
19662 | set_dwarf2_cmd (char *args, int from_tty) | |
19663 | { | |
19664 | help_list (set_dwarf2_cmdlist, "maintenance set dwarf2 ", -1, gdb_stdout); | |
19665 | } | |
19666 | ||
19667 | static void | |
19668 | show_dwarf2_cmd (char *args, int from_tty) | |
6e70227d | 19669 | { |
ae038cb0 DJ |
19670 | cmd_show_list (show_dwarf2_cmdlist, from_tty, ""); |
19671 | } | |
19672 | ||
4bf44c1c | 19673 | /* Free data associated with OBJFILE, if necessary. */ |
dce234bc PP |
19674 | |
19675 | static void | |
c1bd65d0 | 19676 | dwarf2_per_objfile_free (struct objfile *objfile, void *d) |
dce234bc PP |
19677 | { |
19678 | struct dwarf2_per_objfile *data = d; | |
8b70b953 | 19679 | int ix; |
8b70b953 | 19680 | |
95554aad TT |
19681 | for (ix = 0; ix < dwarf2_per_objfile->n_comp_units; ++ix) |
19682 | VEC_free (dwarf2_per_cu_ptr, | |
796a7ff8 DE |
19683 | dwarf2_per_objfile->all_comp_units[ix]->imported_symtabs); |
19684 | ||
19685 | for (ix = 0; ix < dwarf2_per_objfile->n_type_units; ++ix) | |
19686 | VEC_free (dwarf2_per_cu_ptr, | |
19687 | dwarf2_per_objfile->all_type_units[ix]->per_cu.imported_symtabs); | |
95554aad | 19688 | |
8b70b953 | 19689 | VEC_free (dwarf2_section_info_def, data->types); |
3019eac3 DE |
19690 | |
19691 | if (data->dwo_files) | |
19692 | free_dwo_files (data->dwo_files, objfile); | |
36586728 TT |
19693 | |
19694 | if (data->dwz_file && data->dwz_file->dwz_bfd) | |
19695 | gdb_bfd_unref (data->dwz_file->dwz_bfd); | |
9291a0cd TT |
19696 | } |
19697 | ||
19698 | \f | |
ae2de4f8 | 19699 | /* The "save gdb-index" command. */ |
9291a0cd TT |
19700 | |
19701 | /* The contents of the hash table we create when building the string | |
19702 | table. */ | |
19703 | struct strtab_entry | |
19704 | { | |
19705 | offset_type offset; | |
19706 | const char *str; | |
19707 | }; | |
19708 | ||
559a7a62 JK |
19709 | /* Hash function for a strtab_entry. |
19710 | ||
19711 | Function is used only during write_hash_table so no index format backward | |
19712 | compatibility is needed. */ | |
b89be57b | 19713 | |
9291a0cd TT |
19714 | static hashval_t |
19715 | hash_strtab_entry (const void *e) | |
19716 | { | |
19717 | const struct strtab_entry *entry = e; | |
559a7a62 | 19718 | return mapped_index_string_hash (INT_MAX, entry->str); |
9291a0cd TT |
19719 | } |
19720 | ||
19721 | /* Equality function for a strtab_entry. */ | |
b89be57b | 19722 | |
9291a0cd TT |
19723 | static int |
19724 | eq_strtab_entry (const void *a, const void *b) | |
19725 | { | |
19726 | const struct strtab_entry *ea = a; | |
19727 | const struct strtab_entry *eb = b; | |
19728 | return !strcmp (ea->str, eb->str); | |
19729 | } | |
19730 | ||
19731 | /* Create a strtab_entry hash table. */ | |
b89be57b | 19732 | |
9291a0cd TT |
19733 | static htab_t |
19734 | create_strtab (void) | |
19735 | { | |
19736 | return htab_create_alloc (100, hash_strtab_entry, eq_strtab_entry, | |
19737 | xfree, xcalloc, xfree); | |
19738 | } | |
19739 | ||
19740 | /* Add a string to the constant pool. Return the string's offset in | |
19741 | host order. */ | |
b89be57b | 19742 | |
9291a0cd TT |
19743 | static offset_type |
19744 | add_string (htab_t table, struct obstack *cpool, const char *str) | |
19745 | { | |
19746 | void **slot; | |
19747 | struct strtab_entry entry; | |
19748 | struct strtab_entry *result; | |
19749 | ||
19750 | entry.str = str; | |
19751 | slot = htab_find_slot (table, &entry, INSERT); | |
19752 | if (*slot) | |
19753 | result = *slot; | |
19754 | else | |
19755 | { | |
19756 | result = XNEW (struct strtab_entry); | |
19757 | result->offset = obstack_object_size (cpool); | |
19758 | result->str = str; | |
19759 | obstack_grow_str0 (cpool, str); | |
19760 | *slot = result; | |
19761 | } | |
19762 | return result->offset; | |
19763 | } | |
19764 | ||
19765 | /* An entry in the symbol table. */ | |
19766 | struct symtab_index_entry | |
19767 | { | |
19768 | /* The name of the symbol. */ | |
19769 | const char *name; | |
19770 | /* The offset of the name in the constant pool. */ | |
19771 | offset_type index_offset; | |
19772 | /* A sorted vector of the indices of all the CUs that hold an object | |
19773 | of this name. */ | |
19774 | VEC (offset_type) *cu_indices; | |
19775 | }; | |
19776 | ||
19777 | /* The symbol table. This is a power-of-2-sized hash table. */ | |
19778 | struct mapped_symtab | |
19779 | { | |
19780 | offset_type n_elements; | |
19781 | offset_type size; | |
19782 | struct symtab_index_entry **data; | |
19783 | }; | |
19784 | ||
19785 | /* Hash function for a symtab_index_entry. */ | |
b89be57b | 19786 | |
9291a0cd TT |
19787 | static hashval_t |
19788 | hash_symtab_entry (const void *e) | |
19789 | { | |
19790 | const struct symtab_index_entry *entry = e; | |
19791 | return iterative_hash (VEC_address (offset_type, entry->cu_indices), | |
19792 | sizeof (offset_type) * VEC_length (offset_type, | |
19793 | entry->cu_indices), | |
19794 | 0); | |
19795 | } | |
19796 | ||
19797 | /* Equality function for a symtab_index_entry. */ | |
b89be57b | 19798 | |
9291a0cd TT |
19799 | static int |
19800 | eq_symtab_entry (const void *a, const void *b) | |
19801 | { | |
19802 | const struct symtab_index_entry *ea = a; | |
19803 | const struct symtab_index_entry *eb = b; | |
19804 | int len = VEC_length (offset_type, ea->cu_indices); | |
19805 | if (len != VEC_length (offset_type, eb->cu_indices)) | |
19806 | return 0; | |
19807 | return !memcmp (VEC_address (offset_type, ea->cu_indices), | |
19808 | VEC_address (offset_type, eb->cu_indices), | |
19809 | sizeof (offset_type) * len); | |
19810 | } | |
19811 | ||
19812 | /* Destroy a symtab_index_entry. */ | |
b89be57b | 19813 | |
9291a0cd TT |
19814 | static void |
19815 | delete_symtab_entry (void *p) | |
19816 | { | |
19817 | struct symtab_index_entry *entry = p; | |
19818 | VEC_free (offset_type, entry->cu_indices); | |
19819 | xfree (entry); | |
19820 | } | |
19821 | ||
19822 | /* Create a hash table holding symtab_index_entry objects. */ | |
b89be57b | 19823 | |
9291a0cd | 19824 | static htab_t |
3876f04e | 19825 | create_symbol_hash_table (void) |
9291a0cd TT |
19826 | { |
19827 | return htab_create_alloc (100, hash_symtab_entry, eq_symtab_entry, | |
19828 | delete_symtab_entry, xcalloc, xfree); | |
19829 | } | |
19830 | ||
19831 | /* Create a new mapped symtab object. */ | |
b89be57b | 19832 | |
9291a0cd TT |
19833 | static struct mapped_symtab * |
19834 | create_mapped_symtab (void) | |
19835 | { | |
19836 | struct mapped_symtab *symtab = XNEW (struct mapped_symtab); | |
19837 | symtab->n_elements = 0; | |
19838 | symtab->size = 1024; | |
19839 | symtab->data = XCNEWVEC (struct symtab_index_entry *, symtab->size); | |
19840 | return symtab; | |
19841 | } | |
19842 | ||
19843 | /* Destroy a mapped_symtab. */ | |
b89be57b | 19844 | |
9291a0cd TT |
19845 | static void |
19846 | cleanup_mapped_symtab (void *p) | |
19847 | { | |
19848 | struct mapped_symtab *symtab = p; | |
19849 | /* The contents of the array are freed when the other hash table is | |
19850 | destroyed. */ | |
19851 | xfree (symtab->data); | |
19852 | xfree (symtab); | |
19853 | } | |
19854 | ||
19855 | /* Find a slot in SYMTAB for the symbol NAME. Returns a pointer to | |
559a7a62 JK |
19856 | the slot. |
19857 | ||
19858 | Function is used only during write_hash_table so no index format backward | |
19859 | compatibility is needed. */ | |
b89be57b | 19860 | |
9291a0cd TT |
19861 | static struct symtab_index_entry ** |
19862 | find_slot (struct mapped_symtab *symtab, const char *name) | |
19863 | { | |
559a7a62 | 19864 | offset_type index, step, hash = mapped_index_string_hash (INT_MAX, name); |
9291a0cd TT |
19865 | |
19866 | index = hash & (symtab->size - 1); | |
19867 | step = ((hash * 17) & (symtab->size - 1)) | 1; | |
19868 | ||
19869 | for (;;) | |
19870 | { | |
19871 | if (!symtab->data[index] || !strcmp (name, symtab->data[index]->name)) | |
19872 | return &symtab->data[index]; | |
19873 | index = (index + step) & (symtab->size - 1); | |
19874 | } | |
19875 | } | |
19876 | ||
19877 | /* Expand SYMTAB's hash table. */ | |
b89be57b | 19878 | |
9291a0cd TT |
19879 | static void |
19880 | hash_expand (struct mapped_symtab *symtab) | |
19881 | { | |
19882 | offset_type old_size = symtab->size; | |
19883 | offset_type i; | |
19884 | struct symtab_index_entry **old_entries = symtab->data; | |
19885 | ||
19886 | symtab->size *= 2; | |
19887 | symtab->data = XCNEWVEC (struct symtab_index_entry *, symtab->size); | |
19888 | ||
19889 | for (i = 0; i < old_size; ++i) | |
19890 | { | |
19891 | if (old_entries[i]) | |
19892 | { | |
19893 | struct symtab_index_entry **slot = find_slot (symtab, | |
19894 | old_entries[i]->name); | |
19895 | *slot = old_entries[i]; | |
19896 | } | |
19897 | } | |
19898 | ||
19899 | xfree (old_entries); | |
19900 | } | |
19901 | ||
156942c7 DE |
19902 | /* Add an entry to SYMTAB. NAME is the name of the symbol. |
19903 | CU_INDEX is the index of the CU in which the symbol appears. | |
19904 | IS_STATIC is one if the symbol is static, otherwise zero (global). */ | |
b89be57b | 19905 | |
9291a0cd TT |
19906 | static void |
19907 | add_index_entry (struct mapped_symtab *symtab, const char *name, | |
156942c7 | 19908 | int is_static, gdb_index_symbol_kind kind, |
9291a0cd TT |
19909 | offset_type cu_index) |
19910 | { | |
19911 | struct symtab_index_entry **slot; | |
156942c7 | 19912 | offset_type cu_index_and_attrs; |
9291a0cd TT |
19913 | |
19914 | ++symtab->n_elements; | |
19915 | if (4 * symtab->n_elements / 3 >= symtab->size) | |
19916 | hash_expand (symtab); | |
19917 | ||
19918 | slot = find_slot (symtab, name); | |
19919 | if (!*slot) | |
19920 | { | |
19921 | *slot = XNEW (struct symtab_index_entry); | |
19922 | (*slot)->name = name; | |
156942c7 | 19923 | /* index_offset is set later. */ |
9291a0cd TT |
19924 | (*slot)->cu_indices = NULL; |
19925 | } | |
156942c7 DE |
19926 | |
19927 | cu_index_and_attrs = 0; | |
19928 | DW2_GDB_INDEX_CU_SET_VALUE (cu_index_and_attrs, cu_index); | |
19929 | DW2_GDB_INDEX_SYMBOL_STATIC_SET_VALUE (cu_index_and_attrs, is_static); | |
19930 | DW2_GDB_INDEX_SYMBOL_KIND_SET_VALUE (cu_index_and_attrs, kind); | |
19931 | ||
19932 | /* We don't want to record an index value twice as we want to avoid the | |
19933 | duplication. | |
19934 | We process all global symbols and then all static symbols | |
19935 | (which would allow us to avoid the duplication by only having to check | |
19936 | the last entry pushed), but a symbol could have multiple kinds in one CU. | |
19937 | To keep things simple we don't worry about the duplication here and | |
19938 | sort and uniqufy the list after we've processed all symbols. */ | |
19939 | VEC_safe_push (offset_type, (*slot)->cu_indices, cu_index_and_attrs); | |
19940 | } | |
19941 | ||
19942 | /* qsort helper routine for uniquify_cu_indices. */ | |
19943 | ||
19944 | static int | |
19945 | offset_type_compare (const void *ap, const void *bp) | |
19946 | { | |
19947 | offset_type a = *(offset_type *) ap; | |
19948 | offset_type b = *(offset_type *) bp; | |
19949 | ||
19950 | return (a > b) - (b > a); | |
19951 | } | |
19952 | ||
19953 | /* Sort and remove duplicates of all symbols' cu_indices lists. */ | |
19954 | ||
19955 | static void | |
19956 | uniquify_cu_indices (struct mapped_symtab *symtab) | |
19957 | { | |
19958 | int i; | |
19959 | ||
19960 | for (i = 0; i < symtab->size; ++i) | |
19961 | { | |
19962 | struct symtab_index_entry *entry = symtab->data[i]; | |
19963 | ||
19964 | if (entry | |
19965 | && entry->cu_indices != NULL) | |
19966 | { | |
19967 | unsigned int next_to_insert, next_to_check; | |
19968 | offset_type last_value; | |
19969 | ||
19970 | qsort (VEC_address (offset_type, entry->cu_indices), | |
19971 | VEC_length (offset_type, entry->cu_indices), | |
19972 | sizeof (offset_type), offset_type_compare); | |
19973 | ||
19974 | last_value = VEC_index (offset_type, entry->cu_indices, 0); | |
19975 | next_to_insert = 1; | |
19976 | for (next_to_check = 1; | |
19977 | next_to_check < VEC_length (offset_type, entry->cu_indices); | |
19978 | ++next_to_check) | |
19979 | { | |
19980 | if (VEC_index (offset_type, entry->cu_indices, next_to_check) | |
19981 | != last_value) | |
19982 | { | |
19983 | last_value = VEC_index (offset_type, entry->cu_indices, | |
19984 | next_to_check); | |
19985 | VEC_replace (offset_type, entry->cu_indices, next_to_insert, | |
19986 | last_value); | |
19987 | ++next_to_insert; | |
19988 | } | |
19989 | } | |
19990 | VEC_truncate (offset_type, entry->cu_indices, next_to_insert); | |
19991 | } | |
19992 | } | |
9291a0cd TT |
19993 | } |
19994 | ||
19995 | /* Add a vector of indices to the constant pool. */ | |
b89be57b | 19996 | |
9291a0cd | 19997 | static offset_type |
3876f04e | 19998 | add_indices_to_cpool (htab_t symbol_hash_table, struct obstack *cpool, |
9291a0cd TT |
19999 | struct symtab_index_entry *entry) |
20000 | { | |
20001 | void **slot; | |
20002 | ||
3876f04e | 20003 | slot = htab_find_slot (symbol_hash_table, entry, INSERT); |
9291a0cd TT |
20004 | if (!*slot) |
20005 | { | |
20006 | offset_type len = VEC_length (offset_type, entry->cu_indices); | |
20007 | offset_type val = MAYBE_SWAP (len); | |
20008 | offset_type iter; | |
20009 | int i; | |
20010 | ||
20011 | *slot = entry; | |
20012 | entry->index_offset = obstack_object_size (cpool); | |
20013 | ||
20014 | obstack_grow (cpool, &val, sizeof (val)); | |
20015 | for (i = 0; | |
20016 | VEC_iterate (offset_type, entry->cu_indices, i, iter); | |
20017 | ++i) | |
20018 | { | |
20019 | val = MAYBE_SWAP (iter); | |
20020 | obstack_grow (cpool, &val, sizeof (val)); | |
20021 | } | |
20022 | } | |
20023 | else | |
20024 | { | |
20025 | struct symtab_index_entry *old_entry = *slot; | |
20026 | entry->index_offset = old_entry->index_offset; | |
20027 | entry = old_entry; | |
20028 | } | |
20029 | return entry->index_offset; | |
20030 | } | |
20031 | ||
20032 | /* Write the mapped hash table SYMTAB to the obstack OUTPUT, with | |
20033 | constant pool entries going into the obstack CPOOL. */ | |
b89be57b | 20034 | |
9291a0cd TT |
20035 | static void |
20036 | write_hash_table (struct mapped_symtab *symtab, | |
20037 | struct obstack *output, struct obstack *cpool) | |
20038 | { | |
20039 | offset_type i; | |
3876f04e | 20040 | htab_t symbol_hash_table; |
9291a0cd TT |
20041 | htab_t str_table; |
20042 | ||
3876f04e | 20043 | symbol_hash_table = create_symbol_hash_table (); |
9291a0cd | 20044 | str_table = create_strtab (); |
3876f04e | 20045 | |
9291a0cd TT |
20046 | /* We add all the index vectors to the constant pool first, to |
20047 | ensure alignment is ok. */ | |
20048 | for (i = 0; i < symtab->size; ++i) | |
20049 | { | |
20050 | if (symtab->data[i]) | |
3876f04e | 20051 | add_indices_to_cpool (symbol_hash_table, cpool, symtab->data[i]); |
9291a0cd TT |
20052 | } |
20053 | ||
20054 | /* Now write out the hash table. */ | |
20055 | for (i = 0; i < symtab->size; ++i) | |
20056 | { | |
20057 | offset_type str_off, vec_off; | |
20058 | ||
20059 | if (symtab->data[i]) | |
20060 | { | |
20061 | str_off = add_string (str_table, cpool, symtab->data[i]->name); | |
20062 | vec_off = symtab->data[i]->index_offset; | |
20063 | } | |
20064 | else | |
20065 | { | |
20066 | /* While 0 is a valid constant pool index, it is not valid | |
20067 | to have 0 for both offsets. */ | |
20068 | str_off = 0; | |
20069 | vec_off = 0; | |
20070 | } | |
20071 | ||
20072 | str_off = MAYBE_SWAP (str_off); | |
20073 | vec_off = MAYBE_SWAP (vec_off); | |
20074 | ||
20075 | obstack_grow (output, &str_off, sizeof (str_off)); | |
20076 | obstack_grow (output, &vec_off, sizeof (vec_off)); | |
20077 | } | |
20078 | ||
20079 | htab_delete (str_table); | |
3876f04e | 20080 | htab_delete (symbol_hash_table); |
9291a0cd TT |
20081 | } |
20082 | ||
0a5429f6 DE |
20083 | /* Struct to map psymtab to CU index in the index file. */ |
20084 | struct psymtab_cu_index_map | |
20085 | { | |
20086 | struct partial_symtab *psymtab; | |
20087 | unsigned int cu_index; | |
20088 | }; | |
20089 | ||
20090 | static hashval_t | |
20091 | hash_psymtab_cu_index (const void *item) | |
20092 | { | |
20093 | const struct psymtab_cu_index_map *map = item; | |
20094 | ||
20095 | return htab_hash_pointer (map->psymtab); | |
20096 | } | |
20097 | ||
20098 | static int | |
20099 | eq_psymtab_cu_index (const void *item_lhs, const void *item_rhs) | |
20100 | { | |
20101 | const struct psymtab_cu_index_map *lhs = item_lhs; | |
20102 | const struct psymtab_cu_index_map *rhs = item_rhs; | |
20103 | ||
20104 | return lhs->psymtab == rhs->psymtab; | |
20105 | } | |
20106 | ||
20107 | /* Helper struct for building the address table. */ | |
20108 | struct addrmap_index_data | |
20109 | { | |
20110 | struct objfile *objfile; | |
20111 | struct obstack *addr_obstack; | |
20112 | htab_t cu_index_htab; | |
20113 | ||
20114 | /* Non-zero if the previous_* fields are valid. | |
20115 | We can't write an entry until we see the next entry (since it is only then | |
20116 | that we know the end of the entry). */ | |
20117 | int previous_valid; | |
20118 | /* Index of the CU in the table of all CUs in the index file. */ | |
20119 | unsigned int previous_cu_index; | |
0963b4bd | 20120 | /* Start address of the CU. */ |
0a5429f6 DE |
20121 | CORE_ADDR previous_cu_start; |
20122 | }; | |
20123 | ||
20124 | /* Write an address entry to OBSTACK. */ | |
b89be57b | 20125 | |
9291a0cd | 20126 | static void |
0a5429f6 DE |
20127 | add_address_entry (struct objfile *objfile, struct obstack *obstack, |
20128 | CORE_ADDR start, CORE_ADDR end, unsigned int cu_index) | |
9291a0cd | 20129 | { |
0a5429f6 | 20130 | offset_type cu_index_to_write; |
9291a0cd TT |
20131 | char addr[8]; |
20132 | CORE_ADDR baseaddr; | |
20133 | ||
20134 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
20135 | ||
0a5429f6 DE |
20136 | store_unsigned_integer (addr, 8, BFD_ENDIAN_LITTLE, start - baseaddr); |
20137 | obstack_grow (obstack, addr, 8); | |
20138 | store_unsigned_integer (addr, 8, BFD_ENDIAN_LITTLE, end - baseaddr); | |
20139 | obstack_grow (obstack, addr, 8); | |
20140 | cu_index_to_write = MAYBE_SWAP (cu_index); | |
20141 | obstack_grow (obstack, &cu_index_to_write, sizeof (offset_type)); | |
20142 | } | |
20143 | ||
20144 | /* Worker function for traversing an addrmap to build the address table. */ | |
20145 | ||
20146 | static int | |
20147 | add_address_entry_worker (void *datap, CORE_ADDR start_addr, void *obj) | |
20148 | { | |
20149 | struct addrmap_index_data *data = datap; | |
20150 | struct partial_symtab *pst = obj; | |
0a5429f6 DE |
20151 | |
20152 | if (data->previous_valid) | |
20153 | add_address_entry (data->objfile, data->addr_obstack, | |
20154 | data->previous_cu_start, start_addr, | |
20155 | data->previous_cu_index); | |
20156 | ||
20157 | data->previous_cu_start = start_addr; | |
20158 | if (pst != NULL) | |
20159 | { | |
20160 | struct psymtab_cu_index_map find_map, *map; | |
20161 | find_map.psymtab = pst; | |
20162 | map = htab_find (data->cu_index_htab, &find_map); | |
20163 | gdb_assert (map != NULL); | |
20164 | data->previous_cu_index = map->cu_index; | |
20165 | data->previous_valid = 1; | |
20166 | } | |
20167 | else | |
20168 | data->previous_valid = 0; | |
20169 | ||
20170 | return 0; | |
20171 | } | |
20172 | ||
20173 | /* Write OBJFILE's address map to OBSTACK. | |
20174 | CU_INDEX_HTAB is used to map addrmap entries to their CU indices | |
20175 | in the index file. */ | |
20176 | ||
20177 | static void | |
20178 | write_address_map (struct objfile *objfile, struct obstack *obstack, | |
20179 | htab_t cu_index_htab) | |
20180 | { | |
20181 | struct addrmap_index_data addrmap_index_data; | |
20182 | ||
20183 | /* When writing the address table, we have to cope with the fact that | |
20184 | the addrmap iterator only provides the start of a region; we have to | |
20185 | wait until the next invocation to get the start of the next region. */ | |
20186 | ||
20187 | addrmap_index_data.objfile = objfile; | |
20188 | addrmap_index_data.addr_obstack = obstack; | |
20189 | addrmap_index_data.cu_index_htab = cu_index_htab; | |
20190 | addrmap_index_data.previous_valid = 0; | |
20191 | ||
20192 | addrmap_foreach (objfile->psymtabs_addrmap, add_address_entry_worker, | |
20193 | &addrmap_index_data); | |
20194 | ||
20195 | /* It's highly unlikely the last entry (end address = 0xff...ff) | |
20196 | is valid, but we should still handle it. | |
20197 | The end address is recorded as the start of the next region, but that | |
20198 | doesn't work here. To cope we pass 0xff...ff, this is a rare situation | |
20199 | anyway. */ | |
20200 | if (addrmap_index_data.previous_valid) | |
20201 | add_address_entry (objfile, obstack, | |
20202 | addrmap_index_data.previous_cu_start, (CORE_ADDR) -1, | |
20203 | addrmap_index_data.previous_cu_index); | |
9291a0cd TT |
20204 | } |
20205 | ||
156942c7 DE |
20206 | /* Return the symbol kind of PSYM. */ |
20207 | ||
20208 | static gdb_index_symbol_kind | |
20209 | symbol_kind (struct partial_symbol *psym) | |
20210 | { | |
20211 | domain_enum domain = PSYMBOL_DOMAIN (psym); | |
20212 | enum address_class aclass = PSYMBOL_CLASS (psym); | |
20213 | ||
20214 | switch (domain) | |
20215 | { | |
20216 | case VAR_DOMAIN: | |
20217 | switch (aclass) | |
20218 | { | |
20219 | case LOC_BLOCK: | |
20220 | return GDB_INDEX_SYMBOL_KIND_FUNCTION; | |
20221 | case LOC_TYPEDEF: | |
20222 | return GDB_INDEX_SYMBOL_KIND_TYPE; | |
20223 | case LOC_COMPUTED: | |
20224 | case LOC_CONST_BYTES: | |
20225 | case LOC_OPTIMIZED_OUT: | |
20226 | case LOC_STATIC: | |
20227 | return GDB_INDEX_SYMBOL_KIND_VARIABLE; | |
20228 | case LOC_CONST: | |
20229 | /* Note: It's currently impossible to recognize psyms as enum values | |
20230 | short of reading the type info. For now punt. */ | |
20231 | return GDB_INDEX_SYMBOL_KIND_VARIABLE; | |
20232 | default: | |
20233 | /* There are other LOC_FOO values that one might want to classify | |
20234 | as variables, but dwarf2read.c doesn't currently use them. */ | |
20235 | return GDB_INDEX_SYMBOL_KIND_OTHER; | |
20236 | } | |
20237 | case STRUCT_DOMAIN: | |
20238 | return GDB_INDEX_SYMBOL_KIND_TYPE; | |
20239 | default: | |
20240 | return GDB_INDEX_SYMBOL_KIND_OTHER; | |
20241 | } | |
20242 | } | |
20243 | ||
9291a0cd | 20244 | /* Add a list of partial symbols to SYMTAB. */ |
b89be57b | 20245 | |
9291a0cd TT |
20246 | static void |
20247 | write_psymbols (struct mapped_symtab *symtab, | |
987d643c | 20248 | htab_t psyms_seen, |
9291a0cd TT |
20249 | struct partial_symbol **psymp, |
20250 | int count, | |
987d643c TT |
20251 | offset_type cu_index, |
20252 | int is_static) | |
9291a0cd TT |
20253 | { |
20254 | for (; count-- > 0; ++psymp) | |
20255 | { | |
156942c7 DE |
20256 | struct partial_symbol *psym = *psymp; |
20257 | void **slot; | |
987d643c | 20258 | |
156942c7 | 20259 | if (SYMBOL_LANGUAGE (psym) == language_ada) |
9291a0cd | 20260 | error (_("Ada is not currently supported by the index")); |
987d643c | 20261 | |
987d643c | 20262 | /* Only add a given psymbol once. */ |
156942c7 | 20263 | slot = htab_find_slot (psyms_seen, psym, INSERT); |
987d643c TT |
20264 | if (!*slot) |
20265 | { | |
156942c7 DE |
20266 | gdb_index_symbol_kind kind = symbol_kind (psym); |
20267 | ||
20268 | *slot = psym; | |
20269 | add_index_entry (symtab, SYMBOL_SEARCH_NAME (psym), | |
20270 | is_static, kind, cu_index); | |
987d643c | 20271 | } |
9291a0cd TT |
20272 | } |
20273 | } | |
20274 | ||
20275 | /* Write the contents of an ("unfinished") obstack to FILE. Throw an | |
20276 | exception if there is an error. */ | |
b89be57b | 20277 | |
9291a0cd TT |
20278 | static void |
20279 | write_obstack (FILE *file, struct obstack *obstack) | |
20280 | { | |
20281 | if (fwrite (obstack_base (obstack), 1, obstack_object_size (obstack), | |
20282 | file) | |
20283 | != obstack_object_size (obstack)) | |
20284 | error (_("couldn't data write to file")); | |
20285 | } | |
20286 | ||
20287 | /* Unlink a file if the argument is not NULL. */ | |
b89be57b | 20288 | |
9291a0cd TT |
20289 | static void |
20290 | unlink_if_set (void *p) | |
20291 | { | |
20292 | char **filename = p; | |
20293 | if (*filename) | |
20294 | unlink (*filename); | |
20295 | } | |
20296 | ||
1fd400ff TT |
20297 | /* A helper struct used when iterating over debug_types. */ |
20298 | struct signatured_type_index_data | |
20299 | { | |
20300 | struct objfile *objfile; | |
20301 | struct mapped_symtab *symtab; | |
20302 | struct obstack *types_list; | |
987d643c | 20303 | htab_t psyms_seen; |
1fd400ff TT |
20304 | int cu_index; |
20305 | }; | |
20306 | ||
20307 | /* A helper function that writes a single signatured_type to an | |
20308 | obstack. */ | |
b89be57b | 20309 | |
1fd400ff TT |
20310 | static int |
20311 | write_one_signatured_type (void **slot, void *d) | |
20312 | { | |
20313 | struct signatured_type_index_data *info = d; | |
20314 | struct signatured_type *entry = (struct signatured_type *) *slot; | |
e254ef6a DE |
20315 | struct dwarf2_per_cu_data *per_cu = &entry->per_cu; |
20316 | struct partial_symtab *psymtab = per_cu->v.psymtab; | |
1fd400ff TT |
20317 | gdb_byte val[8]; |
20318 | ||
20319 | write_psymbols (info->symtab, | |
987d643c | 20320 | info->psyms_seen, |
3e43a32a MS |
20321 | info->objfile->global_psymbols.list |
20322 | + psymtab->globals_offset, | |
987d643c TT |
20323 | psymtab->n_global_syms, info->cu_index, |
20324 | 0); | |
1fd400ff | 20325 | write_psymbols (info->symtab, |
987d643c | 20326 | info->psyms_seen, |
3e43a32a MS |
20327 | info->objfile->static_psymbols.list |
20328 | + psymtab->statics_offset, | |
987d643c TT |
20329 | psymtab->n_static_syms, info->cu_index, |
20330 | 1); | |
1fd400ff | 20331 | |
b64f50a1 JK |
20332 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, |
20333 | entry->per_cu.offset.sect_off); | |
1fd400ff | 20334 | obstack_grow (info->types_list, val, 8); |
3019eac3 DE |
20335 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, |
20336 | entry->type_offset_in_tu.cu_off); | |
1fd400ff TT |
20337 | obstack_grow (info->types_list, val, 8); |
20338 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, entry->signature); | |
20339 | obstack_grow (info->types_list, val, 8); | |
20340 | ||
20341 | ++info->cu_index; | |
20342 | ||
20343 | return 1; | |
20344 | } | |
20345 | ||
95554aad TT |
20346 | /* Recurse into all "included" dependencies and write their symbols as |
20347 | if they appeared in this psymtab. */ | |
20348 | ||
20349 | static void | |
20350 | recursively_write_psymbols (struct objfile *objfile, | |
20351 | struct partial_symtab *psymtab, | |
20352 | struct mapped_symtab *symtab, | |
20353 | htab_t psyms_seen, | |
20354 | offset_type cu_index) | |
20355 | { | |
20356 | int i; | |
20357 | ||
20358 | for (i = 0; i < psymtab->number_of_dependencies; ++i) | |
20359 | if (psymtab->dependencies[i]->user != NULL) | |
20360 | recursively_write_psymbols (objfile, psymtab->dependencies[i], | |
20361 | symtab, psyms_seen, cu_index); | |
20362 | ||
20363 | write_psymbols (symtab, | |
20364 | psyms_seen, | |
20365 | objfile->global_psymbols.list + psymtab->globals_offset, | |
20366 | psymtab->n_global_syms, cu_index, | |
20367 | 0); | |
20368 | write_psymbols (symtab, | |
20369 | psyms_seen, | |
20370 | objfile->static_psymbols.list + psymtab->statics_offset, | |
20371 | psymtab->n_static_syms, cu_index, | |
20372 | 1); | |
20373 | } | |
20374 | ||
9291a0cd | 20375 | /* Create an index file for OBJFILE in the directory DIR. */ |
b89be57b | 20376 | |
9291a0cd TT |
20377 | static void |
20378 | write_psymtabs_to_index (struct objfile *objfile, const char *dir) | |
20379 | { | |
20380 | struct cleanup *cleanup; | |
20381 | char *filename, *cleanup_filename; | |
1fd400ff TT |
20382 | struct obstack contents, addr_obstack, constant_pool, symtab_obstack; |
20383 | struct obstack cu_list, types_cu_list; | |
9291a0cd TT |
20384 | int i; |
20385 | FILE *out_file; | |
20386 | struct mapped_symtab *symtab; | |
20387 | offset_type val, size_of_contents, total_len; | |
20388 | struct stat st; | |
987d643c | 20389 | htab_t psyms_seen; |
0a5429f6 DE |
20390 | htab_t cu_index_htab; |
20391 | struct psymtab_cu_index_map *psymtab_cu_index_map; | |
9291a0cd | 20392 | |
b4f2f049 | 20393 | if (!objfile->psymtabs || !objfile->psymtabs_addrmap) |
9291a0cd | 20394 | return; |
b4f2f049 | 20395 | |
9291a0cd TT |
20396 | if (dwarf2_per_objfile->using_index) |
20397 | error (_("Cannot use an index to create the index")); | |
20398 | ||
8b70b953 TT |
20399 | if (VEC_length (dwarf2_section_info_def, dwarf2_per_objfile->types) > 1) |
20400 | error (_("Cannot make an index when the file has multiple .debug_types sections")); | |
20401 | ||
9291a0cd | 20402 | if (stat (objfile->name, &st) < 0) |
7e17e088 | 20403 | perror_with_name (objfile->name); |
9291a0cd TT |
20404 | |
20405 | filename = concat (dir, SLASH_STRING, lbasename (objfile->name), | |
20406 | INDEX_SUFFIX, (char *) NULL); | |
20407 | cleanup = make_cleanup (xfree, filename); | |
20408 | ||
20409 | out_file = fopen (filename, "wb"); | |
20410 | if (!out_file) | |
20411 | error (_("Can't open `%s' for writing"), filename); | |
20412 | ||
20413 | cleanup_filename = filename; | |
20414 | make_cleanup (unlink_if_set, &cleanup_filename); | |
20415 | ||
20416 | symtab = create_mapped_symtab (); | |
20417 | make_cleanup (cleanup_mapped_symtab, symtab); | |
20418 | ||
20419 | obstack_init (&addr_obstack); | |
20420 | make_cleanup_obstack_free (&addr_obstack); | |
20421 | ||
20422 | obstack_init (&cu_list); | |
20423 | make_cleanup_obstack_free (&cu_list); | |
20424 | ||
1fd400ff TT |
20425 | obstack_init (&types_cu_list); |
20426 | make_cleanup_obstack_free (&types_cu_list); | |
20427 | ||
987d643c TT |
20428 | psyms_seen = htab_create_alloc (100, htab_hash_pointer, htab_eq_pointer, |
20429 | NULL, xcalloc, xfree); | |
96408a79 | 20430 | make_cleanup_htab_delete (psyms_seen); |
987d643c | 20431 | |
0a5429f6 DE |
20432 | /* While we're scanning CU's create a table that maps a psymtab pointer |
20433 | (which is what addrmap records) to its index (which is what is recorded | |
20434 | in the index file). This will later be needed to write the address | |
20435 | table. */ | |
20436 | cu_index_htab = htab_create_alloc (100, | |
20437 | hash_psymtab_cu_index, | |
20438 | eq_psymtab_cu_index, | |
20439 | NULL, xcalloc, xfree); | |
96408a79 | 20440 | make_cleanup_htab_delete (cu_index_htab); |
0a5429f6 DE |
20441 | psymtab_cu_index_map = (struct psymtab_cu_index_map *) |
20442 | xmalloc (sizeof (struct psymtab_cu_index_map) | |
20443 | * dwarf2_per_objfile->n_comp_units); | |
20444 | make_cleanup (xfree, psymtab_cu_index_map); | |
20445 | ||
20446 | /* The CU list is already sorted, so we don't need to do additional | |
1fd400ff TT |
20447 | work here. Also, the debug_types entries do not appear in |
20448 | all_comp_units, but only in their own hash table. */ | |
9291a0cd TT |
20449 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
20450 | { | |
3e43a32a MS |
20451 | struct dwarf2_per_cu_data *per_cu |
20452 | = dwarf2_per_objfile->all_comp_units[i]; | |
e254ef6a | 20453 | struct partial_symtab *psymtab = per_cu->v.psymtab; |
9291a0cd | 20454 | gdb_byte val[8]; |
0a5429f6 DE |
20455 | struct psymtab_cu_index_map *map; |
20456 | void **slot; | |
9291a0cd | 20457 | |
95554aad TT |
20458 | if (psymtab->user == NULL) |
20459 | recursively_write_psymbols (objfile, psymtab, symtab, psyms_seen, i); | |
9291a0cd | 20460 | |
0a5429f6 DE |
20461 | map = &psymtab_cu_index_map[i]; |
20462 | map->psymtab = psymtab; | |
20463 | map->cu_index = i; | |
20464 | slot = htab_find_slot (cu_index_htab, map, INSERT); | |
20465 | gdb_assert (slot != NULL); | |
20466 | gdb_assert (*slot == NULL); | |
20467 | *slot = map; | |
9291a0cd | 20468 | |
b64f50a1 JK |
20469 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, |
20470 | per_cu->offset.sect_off); | |
9291a0cd | 20471 | obstack_grow (&cu_list, val, 8); |
e254ef6a | 20472 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, per_cu->length); |
9291a0cd TT |
20473 | obstack_grow (&cu_list, val, 8); |
20474 | } | |
20475 | ||
0a5429f6 DE |
20476 | /* Dump the address map. */ |
20477 | write_address_map (objfile, &addr_obstack, cu_index_htab); | |
20478 | ||
1fd400ff TT |
20479 | /* Write out the .debug_type entries, if any. */ |
20480 | if (dwarf2_per_objfile->signatured_types) | |
20481 | { | |
20482 | struct signatured_type_index_data sig_data; | |
20483 | ||
20484 | sig_data.objfile = objfile; | |
20485 | sig_data.symtab = symtab; | |
20486 | sig_data.types_list = &types_cu_list; | |
987d643c | 20487 | sig_data.psyms_seen = psyms_seen; |
1fd400ff TT |
20488 | sig_data.cu_index = dwarf2_per_objfile->n_comp_units; |
20489 | htab_traverse_noresize (dwarf2_per_objfile->signatured_types, | |
20490 | write_one_signatured_type, &sig_data); | |
20491 | } | |
20492 | ||
156942c7 DE |
20493 | /* Now that we've processed all symbols we can shrink their cu_indices |
20494 | lists. */ | |
20495 | uniquify_cu_indices (symtab); | |
20496 | ||
9291a0cd TT |
20497 | obstack_init (&constant_pool); |
20498 | make_cleanup_obstack_free (&constant_pool); | |
20499 | obstack_init (&symtab_obstack); | |
20500 | make_cleanup_obstack_free (&symtab_obstack); | |
20501 | write_hash_table (symtab, &symtab_obstack, &constant_pool); | |
20502 | ||
20503 | obstack_init (&contents); | |
20504 | make_cleanup_obstack_free (&contents); | |
1fd400ff | 20505 | size_of_contents = 6 * sizeof (offset_type); |
9291a0cd TT |
20506 | total_len = size_of_contents; |
20507 | ||
20508 | /* The version number. */ | |
796a7ff8 | 20509 | val = MAYBE_SWAP (8); |
9291a0cd TT |
20510 | obstack_grow (&contents, &val, sizeof (val)); |
20511 | ||
20512 | /* The offset of the CU list from the start of the file. */ | |
20513 | val = MAYBE_SWAP (total_len); | |
20514 | obstack_grow (&contents, &val, sizeof (val)); | |
20515 | total_len += obstack_object_size (&cu_list); | |
20516 | ||
1fd400ff TT |
20517 | /* The offset of the types CU list from the start of the file. */ |
20518 | val = MAYBE_SWAP (total_len); | |
20519 | obstack_grow (&contents, &val, sizeof (val)); | |
20520 | total_len += obstack_object_size (&types_cu_list); | |
20521 | ||
9291a0cd TT |
20522 | /* The offset of the address table from the start of the file. */ |
20523 | val = MAYBE_SWAP (total_len); | |
20524 | obstack_grow (&contents, &val, sizeof (val)); | |
20525 | total_len += obstack_object_size (&addr_obstack); | |
20526 | ||
20527 | /* The offset of the symbol table from the start of the file. */ | |
20528 | val = MAYBE_SWAP (total_len); | |
20529 | obstack_grow (&contents, &val, sizeof (val)); | |
20530 | total_len += obstack_object_size (&symtab_obstack); | |
20531 | ||
20532 | /* The offset of the constant pool from the start of the file. */ | |
20533 | val = MAYBE_SWAP (total_len); | |
20534 | obstack_grow (&contents, &val, sizeof (val)); | |
20535 | total_len += obstack_object_size (&constant_pool); | |
20536 | ||
20537 | gdb_assert (obstack_object_size (&contents) == size_of_contents); | |
20538 | ||
20539 | write_obstack (out_file, &contents); | |
20540 | write_obstack (out_file, &cu_list); | |
1fd400ff | 20541 | write_obstack (out_file, &types_cu_list); |
9291a0cd TT |
20542 | write_obstack (out_file, &addr_obstack); |
20543 | write_obstack (out_file, &symtab_obstack); | |
20544 | write_obstack (out_file, &constant_pool); | |
20545 | ||
20546 | fclose (out_file); | |
20547 | ||
20548 | /* We want to keep the file, so we set cleanup_filename to NULL | |
20549 | here. See unlink_if_set. */ | |
20550 | cleanup_filename = NULL; | |
20551 | ||
20552 | do_cleanups (cleanup); | |
20553 | } | |
20554 | ||
90476074 TT |
20555 | /* Implementation of the `save gdb-index' command. |
20556 | ||
20557 | Note that the file format used by this command is documented in the | |
20558 | GDB manual. Any changes here must be documented there. */ | |
11570e71 | 20559 | |
9291a0cd TT |
20560 | static void |
20561 | save_gdb_index_command (char *arg, int from_tty) | |
20562 | { | |
20563 | struct objfile *objfile; | |
20564 | ||
20565 | if (!arg || !*arg) | |
96d19272 | 20566 | error (_("usage: save gdb-index DIRECTORY")); |
9291a0cd TT |
20567 | |
20568 | ALL_OBJFILES (objfile) | |
20569 | { | |
20570 | struct stat st; | |
20571 | ||
20572 | /* If the objfile does not correspond to an actual file, skip it. */ | |
20573 | if (stat (objfile->name, &st) < 0) | |
20574 | continue; | |
20575 | ||
20576 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); | |
20577 | if (dwarf2_per_objfile) | |
20578 | { | |
20579 | volatile struct gdb_exception except; | |
20580 | ||
20581 | TRY_CATCH (except, RETURN_MASK_ERROR) | |
20582 | { | |
20583 | write_psymtabs_to_index (objfile, arg); | |
20584 | } | |
20585 | if (except.reason < 0) | |
20586 | exception_fprintf (gdb_stderr, except, | |
20587 | _("Error while writing index for `%s': "), | |
20588 | objfile->name); | |
20589 | } | |
20590 | } | |
dce234bc PP |
20591 | } |
20592 | ||
9291a0cd TT |
20593 | \f |
20594 | ||
9eae7c52 TT |
20595 | int dwarf2_always_disassemble; |
20596 | ||
20597 | static void | |
20598 | show_dwarf2_always_disassemble (struct ui_file *file, int from_tty, | |
20599 | struct cmd_list_element *c, const char *value) | |
20600 | { | |
3e43a32a MS |
20601 | fprintf_filtered (file, |
20602 | _("Whether to always disassemble " | |
20603 | "DWARF expressions is %s.\n"), | |
9eae7c52 TT |
20604 | value); |
20605 | } | |
20606 | ||
900e11f9 JK |
20607 | static void |
20608 | show_check_physname (struct ui_file *file, int from_tty, | |
20609 | struct cmd_list_element *c, const char *value) | |
20610 | { | |
20611 | fprintf_filtered (file, | |
20612 | _("Whether to check \"physname\" is %s.\n"), | |
20613 | value); | |
20614 | } | |
20615 | ||
6502dd73 DJ |
20616 | void _initialize_dwarf2_read (void); |
20617 | ||
20618 | void | |
20619 | _initialize_dwarf2_read (void) | |
20620 | { | |
96d19272 JK |
20621 | struct cmd_list_element *c; |
20622 | ||
dce234bc | 20623 | dwarf2_objfile_data_key |
c1bd65d0 | 20624 | = register_objfile_data_with_cleanup (NULL, dwarf2_per_objfile_free); |
ae038cb0 | 20625 | |
1bedd215 AC |
20626 | add_prefix_cmd ("dwarf2", class_maintenance, set_dwarf2_cmd, _("\ |
20627 | Set DWARF 2 specific variables.\n\ | |
20628 | Configure DWARF 2 variables such as the cache size"), | |
ae038cb0 DJ |
20629 | &set_dwarf2_cmdlist, "maintenance set dwarf2 ", |
20630 | 0/*allow-unknown*/, &maintenance_set_cmdlist); | |
20631 | ||
1bedd215 AC |
20632 | add_prefix_cmd ("dwarf2", class_maintenance, show_dwarf2_cmd, _("\ |
20633 | Show DWARF 2 specific variables\n\ | |
20634 | Show DWARF 2 variables such as the cache size"), | |
ae038cb0 DJ |
20635 | &show_dwarf2_cmdlist, "maintenance show dwarf2 ", |
20636 | 0/*allow-unknown*/, &maintenance_show_cmdlist); | |
20637 | ||
20638 | add_setshow_zinteger_cmd ("max-cache-age", class_obscure, | |
7915a72c AC |
20639 | &dwarf2_max_cache_age, _("\ |
20640 | Set the upper bound on the age of cached dwarf2 compilation units."), _("\ | |
20641 | Show the upper bound on the age of cached dwarf2 compilation units."), _("\ | |
20642 | A higher limit means that cached compilation units will be stored\n\ | |
20643 | in memory longer, and more total memory will be used. Zero disables\n\ | |
20644 | caching, which can slow down startup."), | |
2c5b56ce | 20645 | NULL, |
920d2a44 | 20646 | show_dwarf2_max_cache_age, |
2c5b56ce | 20647 | &set_dwarf2_cmdlist, |
ae038cb0 | 20648 | &show_dwarf2_cmdlist); |
d97bc12b | 20649 | |
9eae7c52 TT |
20650 | add_setshow_boolean_cmd ("always-disassemble", class_obscure, |
20651 | &dwarf2_always_disassemble, _("\ | |
20652 | Set whether `info address' always disassembles DWARF expressions."), _("\ | |
20653 | Show whether `info address' always disassembles DWARF expressions."), _("\ | |
20654 | When enabled, DWARF expressions are always printed in an assembly-like\n\ | |
20655 | syntax. When disabled, expressions will be printed in a more\n\ | |
20656 | conversational style, when possible."), | |
20657 | NULL, | |
20658 | show_dwarf2_always_disassemble, | |
20659 | &set_dwarf2_cmdlist, | |
20660 | &show_dwarf2_cmdlist); | |
20661 | ||
45cfd468 DE |
20662 | add_setshow_boolean_cmd ("dwarf2-read", no_class, &dwarf2_read_debug, _("\ |
20663 | Set debugging of the dwarf2 reader."), _("\ | |
20664 | Show debugging of the dwarf2 reader."), _("\ | |
20665 | When enabled, debugging messages are printed during dwarf2 reading\n\ | |
20666 | and symtab expansion."), | |
20667 | NULL, | |
20668 | NULL, | |
20669 | &setdebuglist, &showdebuglist); | |
20670 | ||
ccce17b0 | 20671 | add_setshow_zuinteger_cmd ("dwarf2-die", no_class, &dwarf2_die_debug, _("\ |
d97bc12b DE |
20672 | Set debugging of the dwarf2 DIE reader."), _("\ |
20673 | Show debugging of the dwarf2 DIE reader."), _("\ | |
20674 | When enabled (non-zero), DIEs are dumped after they are read in.\n\ | |
20675 | The value is the maximum depth to print."), | |
ccce17b0 YQ |
20676 | NULL, |
20677 | NULL, | |
20678 | &setdebuglist, &showdebuglist); | |
9291a0cd | 20679 | |
900e11f9 JK |
20680 | add_setshow_boolean_cmd ("check-physname", no_class, &check_physname, _("\ |
20681 | Set cross-checking of \"physname\" code against demangler."), _("\ | |
20682 | Show cross-checking of \"physname\" code against demangler."), _("\ | |
20683 | When enabled, GDB's internal \"physname\" code is checked against\n\ | |
20684 | the demangler."), | |
20685 | NULL, show_check_physname, | |
20686 | &setdebuglist, &showdebuglist); | |
20687 | ||
e615022a DE |
20688 | add_setshow_boolean_cmd ("use-deprecated-index-sections", |
20689 | no_class, &use_deprecated_index_sections, _("\ | |
20690 | Set whether to use deprecated gdb_index sections."), _("\ | |
20691 | Show whether to use deprecated gdb_index sections."), _("\ | |
20692 | When enabled, deprecated .gdb_index sections are used anyway.\n\ | |
20693 | Normally they are ignored either because of a missing feature or\n\ | |
20694 | performance issue.\n\ | |
20695 | Warning: This option must be enabled before gdb reads the file."), | |
20696 | NULL, | |
20697 | NULL, | |
20698 | &setlist, &showlist); | |
20699 | ||
96d19272 | 20700 | c = add_cmd ("gdb-index", class_files, save_gdb_index_command, |
11570e71 | 20701 | _("\ |
fc1a9d6e | 20702 | Save a gdb-index file.\n\ |
11570e71 | 20703 | Usage: save gdb-index DIRECTORY"), |
96d19272 JK |
20704 | &save_cmdlist); |
20705 | set_cmd_completer (c, filename_completer); | |
6502dd73 | 20706 | } |