Commit | Line | Data |
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c906108c | 1 | /* DWARF 2 debugging format support for GDB. |
917c78fc | 2 | |
28e7fd62 | 3 | Copyright (C) 1994-2013 Free Software Foundation, Inc. |
c906108c SS |
4 | |
5 | Adapted by Gary Funck (gary@intrepid.com), Intrepid Technology, | |
6 | Inc. with support from Florida State University (under contract | |
7 | with the Ada Joint Program Office), and Silicon Graphics, Inc. | |
8 | Initial contribution by Brent Benson, Harris Computer Systems, Inc., | |
9 | based on Fred Fish's (Cygnus Support) implementation of DWARF 1 | |
7ce59000 | 10 | support. |
c906108c | 11 | |
c5aa993b | 12 | This file is part of GDB. |
c906108c | 13 | |
c5aa993b JM |
14 | This program is free software; you can redistribute it and/or modify |
15 | it under the terms of the GNU General Public License as published by | |
a9762ec7 JB |
16 | the Free Software Foundation; either version 3 of the License, or |
17 | (at your option) any later version. | |
c906108c | 18 | |
a9762ec7 JB |
19 | This program is distributed in the hope that it will be useful, |
20 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
21 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
22 | GNU General Public License for more details. | |
c906108c | 23 | |
c5aa993b | 24 | You should have received a copy of the GNU General Public License |
a9762ec7 | 25 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c | 26 | |
21b2bd31 DE |
27 | /* FIXME: Various die-reading functions need to be more careful with |
28 | reading off the end of the section. | |
29 | E.g., load_partial_dies, read_partial_die. */ | |
30 | ||
c906108c SS |
31 | #include "defs.h" |
32 | #include "bfd.h" | |
80626a55 | 33 | #include "elf-bfd.h" |
c906108c SS |
34 | #include "symtab.h" |
35 | #include "gdbtypes.h" | |
c906108c | 36 | #include "objfiles.h" |
fa8f86ff | 37 | #include "dwarf2.h" |
c906108c SS |
38 | #include "buildsym.h" |
39 | #include "demangle.h" | |
50f182aa | 40 | #include "gdb-demangle.h" |
c906108c | 41 | #include "expression.h" |
d5166ae1 | 42 | #include "filenames.h" /* for DOSish file names */ |
2e276125 | 43 | #include "macrotab.h" |
c906108c SS |
44 | #include "language.h" |
45 | #include "complaints.h" | |
357e46e7 | 46 | #include "bcache.h" |
4c2df51b DJ |
47 | #include "dwarf2expr.h" |
48 | #include "dwarf2loc.h" | |
9219021c | 49 | #include "cp-support.h" |
72bf9492 | 50 | #include "hashtab.h" |
ae038cb0 DJ |
51 | #include "command.h" |
52 | #include "gdbcmd.h" | |
edb3359d | 53 | #include "block.h" |
ff013f42 | 54 | #include "addrmap.h" |
94af9270 KS |
55 | #include "typeprint.h" |
56 | #include "jv-lang.h" | |
ccefe4c4 | 57 | #include "psympriv.h" |
9291a0cd TT |
58 | #include "exceptions.h" |
59 | #include "gdb_stat.h" | |
96d19272 | 60 | #include "completer.h" |
34eaf542 | 61 | #include "vec.h" |
98bfdba5 | 62 | #include "c-lang.h" |
a766d390 | 63 | #include "go-lang.h" |
98bfdba5 | 64 | #include "valprint.h" |
3019eac3 | 65 | #include "gdbcore.h" /* for gnutarget */ |
156942c7 | 66 | #include "gdb/gdb-index.h" |
60d5a603 | 67 | #include <ctype.h> |
cbb099e8 | 68 | #include "gdb_bfd.h" |
4357ac6c | 69 | #include "f-lang.h" |
05cba821 | 70 | #include "source.h" |
4c2df51b | 71 | |
c906108c SS |
72 | #include <fcntl.h> |
73 | #include "gdb_string.h" | |
4bdf3d34 | 74 | #include "gdb_assert.h" |
c906108c | 75 | #include <sys/types.h> |
d8151005 | 76 | |
34eaf542 TT |
77 | typedef struct symbol *symbolp; |
78 | DEF_VEC_P (symbolp); | |
79 | ||
45cfd468 DE |
80 | /* When non-zero, print basic high level tracing messages. |
81 | This is in contrast to the low level DIE reading of dwarf2_die_debug. */ | |
82 | static int dwarf2_read_debug = 0; | |
83 | ||
d97bc12b | 84 | /* When non-zero, dump DIEs after they are read in. */ |
ccce17b0 | 85 | static unsigned int dwarf2_die_debug = 0; |
d97bc12b | 86 | |
900e11f9 JK |
87 | /* When non-zero, cross-check physname against demangler. */ |
88 | static int check_physname = 0; | |
89 | ||
481860b3 | 90 | /* When non-zero, do not reject deprecated .gdb_index sections. */ |
e615022a | 91 | static int use_deprecated_index_sections = 0; |
481860b3 | 92 | |
6502dd73 DJ |
93 | static const struct objfile_data *dwarf2_objfile_data_key; |
94 | ||
f1e6e072 TT |
95 | /* The "aclass" indices for various kinds of computed DWARF symbols. */ |
96 | ||
97 | static int dwarf2_locexpr_index; | |
98 | static int dwarf2_loclist_index; | |
99 | static int dwarf2_locexpr_block_index; | |
100 | static int dwarf2_loclist_block_index; | |
101 | ||
dce234bc PP |
102 | struct dwarf2_section_info |
103 | { | |
104 | asection *asection; | |
105 | gdb_byte *buffer; | |
106 | bfd_size_type size; | |
be391dca TT |
107 | /* True if we have tried to read this section. */ |
108 | int readin; | |
dce234bc PP |
109 | }; |
110 | ||
8b70b953 TT |
111 | typedef struct dwarf2_section_info dwarf2_section_info_def; |
112 | DEF_VEC_O (dwarf2_section_info_def); | |
113 | ||
9291a0cd TT |
114 | /* All offsets in the index are of this type. It must be |
115 | architecture-independent. */ | |
116 | typedef uint32_t offset_type; | |
117 | ||
118 | DEF_VEC_I (offset_type); | |
119 | ||
156942c7 DE |
120 | /* Ensure only legit values are used. */ |
121 | #define DW2_GDB_INDEX_SYMBOL_STATIC_SET_VALUE(cu_index, value) \ | |
122 | do { \ | |
123 | gdb_assert ((unsigned int) (value) <= 1); \ | |
124 | GDB_INDEX_SYMBOL_STATIC_SET_VALUE((cu_index), (value)); \ | |
125 | } while (0) | |
126 | ||
127 | /* Ensure only legit values are used. */ | |
128 | #define DW2_GDB_INDEX_SYMBOL_KIND_SET_VALUE(cu_index, value) \ | |
129 | do { \ | |
130 | gdb_assert ((value) >= GDB_INDEX_SYMBOL_KIND_TYPE \ | |
131 | && (value) <= GDB_INDEX_SYMBOL_KIND_OTHER); \ | |
132 | GDB_INDEX_SYMBOL_KIND_SET_VALUE((cu_index), (value)); \ | |
133 | } while (0) | |
134 | ||
135 | /* Ensure we don't use more than the alloted nuber of bits for the CU. */ | |
136 | #define DW2_GDB_INDEX_CU_SET_VALUE(cu_index, value) \ | |
137 | do { \ | |
138 | gdb_assert (((value) & ~GDB_INDEX_CU_MASK) == 0); \ | |
139 | GDB_INDEX_CU_SET_VALUE((cu_index), (value)); \ | |
140 | } while (0) | |
141 | ||
9291a0cd TT |
142 | /* A description of the mapped index. The file format is described in |
143 | a comment by the code that writes the index. */ | |
144 | struct mapped_index | |
145 | { | |
559a7a62 JK |
146 | /* Index data format version. */ |
147 | int version; | |
148 | ||
9291a0cd TT |
149 | /* The total length of the buffer. */ |
150 | off_t total_size; | |
b11b1f88 | 151 | |
9291a0cd TT |
152 | /* A pointer to the address table data. */ |
153 | const gdb_byte *address_table; | |
b11b1f88 | 154 | |
9291a0cd TT |
155 | /* Size of the address table data in bytes. */ |
156 | offset_type address_table_size; | |
b11b1f88 | 157 | |
3876f04e DE |
158 | /* The symbol table, implemented as a hash table. */ |
159 | const offset_type *symbol_table; | |
b11b1f88 | 160 | |
9291a0cd | 161 | /* Size in slots, each slot is 2 offset_types. */ |
3876f04e | 162 | offset_type symbol_table_slots; |
b11b1f88 | 163 | |
9291a0cd TT |
164 | /* A pointer to the constant pool. */ |
165 | const char *constant_pool; | |
166 | }; | |
167 | ||
95554aad TT |
168 | typedef struct dwarf2_per_cu_data *dwarf2_per_cu_ptr; |
169 | DEF_VEC_P (dwarf2_per_cu_ptr); | |
170 | ||
9cdd5dbd DE |
171 | /* Collection of data recorded per objfile. |
172 | This hangs off of dwarf2_objfile_data_key. */ | |
173 | ||
6502dd73 DJ |
174 | struct dwarf2_per_objfile |
175 | { | |
dce234bc PP |
176 | struct dwarf2_section_info info; |
177 | struct dwarf2_section_info abbrev; | |
178 | struct dwarf2_section_info line; | |
dce234bc PP |
179 | struct dwarf2_section_info loc; |
180 | struct dwarf2_section_info macinfo; | |
cf2c3c16 | 181 | struct dwarf2_section_info macro; |
dce234bc PP |
182 | struct dwarf2_section_info str; |
183 | struct dwarf2_section_info ranges; | |
3019eac3 | 184 | struct dwarf2_section_info addr; |
dce234bc PP |
185 | struct dwarf2_section_info frame; |
186 | struct dwarf2_section_info eh_frame; | |
9291a0cd | 187 | struct dwarf2_section_info gdb_index; |
ae038cb0 | 188 | |
8b70b953 TT |
189 | VEC (dwarf2_section_info_def) *types; |
190 | ||
be391dca TT |
191 | /* Back link. */ |
192 | struct objfile *objfile; | |
193 | ||
d467dd73 | 194 | /* Table of all the compilation units. This is used to locate |
10b3939b | 195 | the target compilation unit of a particular reference. */ |
ae038cb0 DJ |
196 | struct dwarf2_per_cu_data **all_comp_units; |
197 | ||
198 | /* The number of compilation units in ALL_COMP_UNITS. */ | |
199 | int n_comp_units; | |
200 | ||
1fd400ff | 201 | /* The number of .debug_types-related CUs. */ |
d467dd73 | 202 | int n_type_units; |
1fd400ff | 203 | |
d467dd73 | 204 | /* The .debug_types-related CUs (TUs). */ |
b4dd5633 | 205 | struct signatured_type **all_type_units; |
1fd400ff | 206 | |
f4dc4d17 DE |
207 | /* The number of entries in all_type_unit_groups. */ |
208 | int n_type_unit_groups; | |
209 | ||
210 | /* Table of type unit groups. | |
211 | This exists to make it easy to iterate over all CUs and TU groups. */ | |
212 | struct type_unit_group **all_type_unit_groups; | |
213 | ||
214 | /* Table of struct type_unit_group objects. | |
215 | The hash key is the DW_AT_stmt_list value. */ | |
216 | htab_t type_unit_groups; | |
72dca2f5 | 217 | |
348e048f DE |
218 | /* A table mapping .debug_types signatures to its signatured_type entry. |
219 | This is NULL if the .debug_types section hasn't been read in yet. */ | |
220 | htab_t signatured_types; | |
221 | ||
f4dc4d17 DE |
222 | /* Type unit statistics, to see how well the scaling improvements |
223 | are doing. */ | |
224 | struct tu_stats | |
225 | { | |
226 | int nr_uniq_abbrev_tables; | |
227 | int nr_symtabs; | |
228 | int nr_symtab_sharers; | |
229 | int nr_stmt_less_type_units; | |
230 | } tu_stats; | |
231 | ||
232 | /* A chain of compilation units that are currently read in, so that | |
233 | they can be freed later. */ | |
234 | struct dwarf2_per_cu_data *read_in_chain; | |
235 | ||
3019eac3 DE |
236 | /* A table mapping DW_AT_dwo_name values to struct dwo_file objects. |
237 | This is NULL if the table hasn't been allocated yet. */ | |
238 | htab_t dwo_files; | |
239 | ||
80626a55 DE |
240 | /* Non-zero if we've check for whether there is a DWP file. */ |
241 | int dwp_checked; | |
242 | ||
243 | /* The DWP file if there is one, or NULL. */ | |
244 | struct dwp_file *dwp_file; | |
245 | ||
36586728 TT |
246 | /* The shared '.dwz' file, if one exists. This is used when the |
247 | original data was compressed using 'dwz -m'. */ | |
248 | struct dwz_file *dwz_file; | |
249 | ||
72dca2f5 FR |
250 | /* A flag indicating wether this objfile has a section loaded at a |
251 | VMA of 0. */ | |
252 | int has_section_at_zero; | |
9291a0cd | 253 | |
ae2de4f8 DE |
254 | /* True if we are using the mapped index, |
255 | or we are faking it for OBJF_READNOW's sake. */ | |
9291a0cd TT |
256 | unsigned char using_index; |
257 | ||
ae2de4f8 | 258 | /* The mapped index, or NULL if .gdb_index is missing or not being used. */ |
9291a0cd | 259 | struct mapped_index *index_table; |
98bfdba5 | 260 | |
7b9f3c50 | 261 | /* When using index_table, this keeps track of all quick_file_names entries. |
56e64610 DE |
262 | TUs typically share line table entries with a CU, so we maintain a |
263 | separate table of all line table entries to support the sharing. | |
264 | Note that while there can be way more TUs than CUs, we've already | |
265 | sorted all the TUs into "type unit groups", grouped by their | |
266 | DW_AT_stmt_list value. Therefore the only sharing done here is with a | |
267 | CU and its associated TU group if there is one. */ | |
7b9f3c50 DE |
268 | htab_t quick_file_names_table; |
269 | ||
98bfdba5 PA |
270 | /* Set during partial symbol reading, to prevent queueing of full |
271 | symbols. */ | |
272 | int reading_partial_symbols; | |
673bfd45 | 273 | |
dee91e82 | 274 | /* Table mapping type DIEs to their struct type *. |
673bfd45 | 275 | This is NULL if not allocated yet. |
dee91e82 DE |
276 | The mapping is done via (CU/TU signature + DIE offset) -> type. */ |
277 | htab_t die_type_hash; | |
95554aad TT |
278 | |
279 | /* The CUs we recently read. */ | |
280 | VEC (dwarf2_per_cu_ptr) *just_read_cus; | |
6502dd73 DJ |
281 | }; |
282 | ||
283 | static struct dwarf2_per_objfile *dwarf2_per_objfile; | |
c906108c | 284 | |
251d32d9 | 285 | /* Default names of the debugging sections. */ |
c906108c | 286 | |
233a11ab CS |
287 | /* Note that if the debugging section has been compressed, it might |
288 | have a name like .zdebug_info. */ | |
289 | ||
9cdd5dbd DE |
290 | static const struct dwarf2_debug_sections dwarf2_elf_names = |
291 | { | |
251d32d9 TG |
292 | { ".debug_info", ".zdebug_info" }, |
293 | { ".debug_abbrev", ".zdebug_abbrev" }, | |
294 | { ".debug_line", ".zdebug_line" }, | |
295 | { ".debug_loc", ".zdebug_loc" }, | |
296 | { ".debug_macinfo", ".zdebug_macinfo" }, | |
cf2c3c16 | 297 | { ".debug_macro", ".zdebug_macro" }, |
251d32d9 TG |
298 | { ".debug_str", ".zdebug_str" }, |
299 | { ".debug_ranges", ".zdebug_ranges" }, | |
300 | { ".debug_types", ".zdebug_types" }, | |
3019eac3 | 301 | { ".debug_addr", ".zdebug_addr" }, |
251d32d9 TG |
302 | { ".debug_frame", ".zdebug_frame" }, |
303 | { ".eh_frame", NULL }, | |
24d3216f TT |
304 | { ".gdb_index", ".zgdb_index" }, |
305 | 23 | |
251d32d9 | 306 | }; |
c906108c | 307 | |
80626a55 | 308 | /* List of DWO/DWP sections. */ |
3019eac3 | 309 | |
80626a55 | 310 | static const struct dwop_section_names |
3019eac3 DE |
311 | { |
312 | struct dwarf2_section_names abbrev_dwo; | |
313 | struct dwarf2_section_names info_dwo; | |
314 | struct dwarf2_section_names line_dwo; | |
315 | struct dwarf2_section_names loc_dwo; | |
09262596 DE |
316 | struct dwarf2_section_names macinfo_dwo; |
317 | struct dwarf2_section_names macro_dwo; | |
3019eac3 DE |
318 | struct dwarf2_section_names str_dwo; |
319 | struct dwarf2_section_names str_offsets_dwo; | |
320 | struct dwarf2_section_names types_dwo; | |
80626a55 DE |
321 | struct dwarf2_section_names cu_index; |
322 | struct dwarf2_section_names tu_index; | |
3019eac3 | 323 | } |
80626a55 | 324 | dwop_section_names = |
3019eac3 DE |
325 | { |
326 | { ".debug_abbrev.dwo", ".zdebug_abbrev.dwo" }, | |
327 | { ".debug_info.dwo", ".zdebug_info.dwo" }, | |
328 | { ".debug_line.dwo", ".zdebug_line.dwo" }, | |
329 | { ".debug_loc.dwo", ".zdebug_loc.dwo" }, | |
09262596 DE |
330 | { ".debug_macinfo.dwo", ".zdebug_macinfo.dwo" }, |
331 | { ".debug_macro.dwo", ".zdebug_macro.dwo" }, | |
3019eac3 DE |
332 | { ".debug_str.dwo", ".zdebug_str.dwo" }, |
333 | { ".debug_str_offsets.dwo", ".zdebug_str_offsets.dwo" }, | |
334 | { ".debug_types.dwo", ".zdebug_types.dwo" }, | |
80626a55 DE |
335 | { ".debug_cu_index", ".zdebug_cu_index" }, |
336 | { ".debug_tu_index", ".zdebug_tu_index" }, | |
3019eac3 DE |
337 | }; |
338 | ||
c906108c SS |
339 | /* local data types */ |
340 | ||
107d2387 AC |
341 | /* The data in a compilation unit header, after target2host |
342 | translation, looks like this. */ | |
c906108c | 343 | struct comp_unit_head |
a738430d | 344 | { |
c764a876 | 345 | unsigned int length; |
a738430d | 346 | short version; |
a738430d MK |
347 | unsigned char addr_size; |
348 | unsigned char signed_addr_p; | |
b64f50a1 | 349 | sect_offset abbrev_offset; |
57349743 | 350 | |
a738430d MK |
351 | /* Size of file offsets; either 4 or 8. */ |
352 | unsigned int offset_size; | |
57349743 | 353 | |
a738430d MK |
354 | /* Size of the length field; either 4 or 12. */ |
355 | unsigned int initial_length_size; | |
57349743 | 356 | |
a738430d MK |
357 | /* Offset to the first byte of this compilation unit header in the |
358 | .debug_info section, for resolving relative reference dies. */ | |
b64f50a1 | 359 | sect_offset offset; |
57349743 | 360 | |
d00adf39 DE |
361 | /* Offset to first die in this cu from the start of the cu. |
362 | This will be the first byte following the compilation unit header. */ | |
b64f50a1 | 363 | cu_offset first_die_offset; |
a738430d | 364 | }; |
c906108c | 365 | |
3da10d80 KS |
366 | /* Type used for delaying computation of method physnames. |
367 | See comments for compute_delayed_physnames. */ | |
368 | struct delayed_method_info | |
369 | { | |
370 | /* The type to which the method is attached, i.e., its parent class. */ | |
371 | struct type *type; | |
372 | ||
373 | /* The index of the method in the type's function fieldlists. */ | |
374 | int fnfield_index; | |
375 | ||
376 | /* The index of the method in the fieldlist. */ | |
377 | int index; | |
378 | ||
379 | /* The name of the DIE. */ | |
380 | const char *name; | |
381 | ||
382 | /* The DIE associated with this method. */ | |
383 | struct die_info *die; | |
384 | }; | |
385 | ||
386 | typedef struct delayed_method_info delayed_method_info; | |
387 | DEF_VEC_O (delayed_method_info); | |
388 | ||
e7c27a73 DJ |
389 | /* Internal state when decoding a particular compilation unit. */ |
390 | struct dwarf2_cu | |
391 | { | |
392 | /* The objfile containing this compilation unit. */ | |
393 | struct objfile *objfile; | |
394 | ||
d00adf39 | 395 | /* The header of the compilation unit. */ |
e7c27a73 | 396 | struct comp_unit_head header; |
e142c38c | 397 | |
d00adf39 DE |
398 | /* Base address of this compilation unit. */ |
399 | CORE_ADDR base_address; | |
400 | ||
401 | /* Non-zero if base_address has been set. */ | |
402 | int base_known; | |
403 | ||
e142c38c DJ |
404 | /* The language we are debugging. */ |
405 | enum language language; | |
406 | const struct language_defn *language_defn; | |
407 | ||
b0f35d58 DL |
408 | const char *producer; |
409 | ||
e142c38c DJ |
410 | /* The generic symbol table building routines have separate lists for |
411 | file scope symbols and all all other scopes (local scopes). So | |
412 | we need to select the right one to pass to add_symbol_to_list(). | |
413 | We do it by keeping a pointer to the correct list in list_in_scope. | |
414 | ||
415 | FIXME: The original dwarf code just treated the file scope as the | |
416 | first local scope, and all other local scopes as nested local | |
417 | scopes, and worked fine. Check to see if we really need to | |
418 | distinguish these in buildsym.c. */ | |
419 | struct pending **list_in_scope; | |
420 | ||
433df2d4 DE |
421 | /* The abbrev table for this CU. |
422 | Normally this points to the abbrev table in the objfile. | |
423 | But if DWO_UNIT is non-NULL this is the abbrev table in the DWO file. */ | |
424 | struct abbrev_table *abbrev_table; | |
72bf9492 | 425 | |
b64f50a1 JK |
426 | /* Hash table holding all the loaded partial DIEs |
427 | with partial_die->offset.SECT_OFF as hash. */ | |
72bf9492 DJ |
428 | htab_t partial_dies; |
429 | ||
430 | /* Storage for things with the same lifetime as this read-in compilation | |
431 | unit, including partial DIEs. */ | |
432 | struct obstack comp_unit_obstack; | |
433 | ||
ae038cb0 DJ |
434 | /* When multiple dwarf2_cu structures are living in memory, this field |
435 | chains them all together, so that they can be released efficiently. | |
436 | We will probably also want a generation counter so that most-recently-used | |
437 | compilation units are cached... */ | |
438 | struct dwarf2_per_cu_data *read_in_chain; | |
439 | ||
440 | /* Backchain to our per_cu entry if the tree has been built. */ | |
441 | struct dwarf2_per_cu_data *per_cu; | |
442 | ||
443 | /* How many compilation units ago was this CU last referenced? */ | |
444 | int last_used; | |
445 | ||
b64f50a1 JK |
446 | /* A hash table of DIE cu_offset for following references with |
447 | die_info->offset.sect_off as hash. */ | |
51545339 | 448 | htab_t die_hash; |
10b3939b DJ |
449 | |
450 | /* Full DIEs if read in. */ | |
451 | struct die_info *dies; | |
452 | ||
453 | /* A set of pointers to dwarf2_per_cu_data objects for compilation | |
454 | units referenced by this one. Only set during full symbol processing; | |
455 | partial symbol tables do not have dependencies. */ | |
456 | htab_t dependencies; | |
457 | ||
cb1df416 DJ |
458 | /* Header data from the line table, during full symbol processing. */ |
459 | struct line_header *line_header; | |
460 | ||
3da10d80 KS |
461 | /* A list of methods which need to have physnames computed |
462 | after all type information has been read. */ | |
463 | VEC (delayed_method_info) *method_list; | |
464 | ||
96408a79 SA |
465 | /* To be copied to symtab->call_site_htab. */ |
466 | htab_t call_site_htab; | |
467 | ||
034e5797 DE |
468 | /* Non-NULL if this CU came from a DWO file. |
469 | There is an invariant here that is important to remember: | |
470 | Except for attributes copied from the top level DIE in the "main" | |
471 | (or "stub") file in preparation for reading the DWO file | |
472 | (e.g., DW_AT_GNU_addr_base), we KISS: there is only *one* CU. | |
473 | Either there isn't a DWO file (in which case this is NULL and the point | |
474 | is moot), or there is and either we're not going to read it (in which | |
475 | case this is NULL) or there is and we are reading it (in which case this | |
476 | is non-NULL). */ | |
3019eac3 DE |
477 | struct dwo_unit *dwo_unit; |
478 | ||
479 | /* The DW_AT_addr_base attribute if present, zero otherwise | |
480 | (zero is a valid value though). | |
481 | Note this value comes from the stub CU/TU's DIE. */ | |
482 | ULONGEST addr_base; | |
483 | ||
2e3cf129 DE |
484 | /* The DW_AT_ranges_base attribute if present, zero otherwise |
485 | (zero is a valid value though). | |
486 | Note this value comes from the stub CU/TU's DIE. | |
487 | Also note that the value is zero in the non-DWO case so this value can | |
ab435259 DE |
488 | be used without needing to know whether DWO files are in use or not. |
489 | N.B. This does not apply to DW_AT_ranges appearing in | |
490 | DW_TAG_compile_unit dies. This is a bit of a wart, consider if ever | |
491 | DW_AT_ranges appeared in the DW_TAG_compile_unit of DWO DIEs: then | |
492 | DW_AT_ranges_base *would* have to be applied, and we'd have to care | |
493 | whether the DW_AT_ranges attribute came from the skeleton or DWO. */ | |
2e3cf129 DE |
494 | ULONGEST ranges_base; |
495 | ||
ae038cb0 DJ |
496 | /* Mark used when releasing cached dies. */ |
497 | unsigned int mark : 1; | |
498 | ||
8be455d7 JK |
499 | /* This CU references .debug_loc. See the symtab->locations_valid field. |
500 | This test is imperfect as there may exist optimized debug code not using | |
501 | any location list and still facing inlining issues if handled as | |
502 | unoptimized code. For a future better test see GCC PR other/32998. */ | |
8be455d7 | 503 | unsigned int has_loclist : 1; |
ba919b58 | 504 | |
1b80a9fa JK |
505 | /* These cache the results for producer_is_* fields. CHECKED_PRODUCER is set |
506 | if all the producer_is_* fields are valid. This information is cached | |
507 | because profiling CU expansion showed excessive time spent in | |
508 | producer_is_gxx_lt_4_6. */ | |
ba919b58 TT |
509 | unsigned int checked_producer : 1; |
510 | unsigned int producer_is_gxx_lt_4_6 : 1; | |
1b80a9fa | 511 | unsigned int producer_is_gcc_lt_4_3 : 1; |
685b1105 | 512 | unsigned int producer_is_icc : 1; |
4d4ec4e5 TT |
513 | |
514 | /* When set, the file that we're processing is known to have | |
515 | debugging info for C++ namespaces. GCC 3.3.x did not produce | |
516 | this information, but later versions do. */ | |
517 | ||
518 | unsigned int processing_has_namespace_info : 1; | |
e7c27a73 DJ |
519 | }; |
520 | ||
10b3939b DJ |
521 | /* Persistent data held for a compilation unit, even when not |
522 | processing it. We put a pointer to this structure in the | |
28dee7f5 | 523 | read_symtab_private field of the psymtab. */ |
10b3939b | 524 | |
ae038cb0 DJ |
525 | struct dwarf2_per_cu_data |
526 | { | |
36586728 | 527 | /* The start offset and length of this compilation unit. |
45452591 | 528 | NOTE: Unlike comp_unit_head.length, this length includes |
3019eac3 DE |
529 | initial_length_size. |
530 | If the DIE refers to a DWO file, this is always of the original die, | |
531 | not the DWO file. */ | |
b64f50a1 | 532 | sect_offset offset; |
36586728 | 533 | unsigned int length; |
ae038cb0 DJ |
534 | |
535 | /* Flag indicating this compilation unit will be read in before | |
536 | any of the current compilation units are processed. */ | |
c764a876 | 537 | unsigned int queued : 1; |
ae038cb0 | 538 | |
0d99eb77 DE |
539 | /* This flag will be set when reading partial DIEs if we need to load |
540 | absolutely all DIEs for this compilation unit, instead of just the ones | |
541 | we think are interesting. It gets set if we look for a DIE in the | |
5afb4e99 DJ |
542 | hash table and don't find it. */ |
543 | unsigned int load_all_dies : 1; | |
544 | ||
3019eac3 DE |
545 | /* Non-zero if this CU is from .debug_types. */ |
546 | unsigned int is_debug_types : 1; | |
547 | ||
36586728 TT |
548 | /* Non-zero if this CU is from the .dwz file. */ |
549 | unsigned int is_dwz : 1; | |
550 | ||
3019eac3 DE |
551 | /* The section this CU/TU lives in. |
552 | If the DIE refers to a DWO file, this is always the original die, | |
553 | not the DWO file. */ | |
8a0459fd | 554 | struct dwarf2_section_info *section; |
348e048f | 555 | |
17ea53c3 JK |
556 | /* Set to non-NULL iff this CU is currently loaded. When it gets freed out |
557 | of the CU cache it gets reset to NULL again. */ | |
ae038cb0 | 558 | struct dwarf2_cu *cu; |
1c379e20 | 559 | |
9cdd5dbd DE |
560 | /* The corresponding objfile. |
561 | Normally we can get the objfile from dwarf2_per_objfile. | |
562 | However we can enter this file with just a "per_cu" handle. */ | |
9291a0cd TT |
563 | struct objfile *objfile; |
564 | ||
565 | /* When using partial symbol tables, the 'psymtab' field is active. | |
566 | Otherwise the 'quick' field is active. */ | |
567 | union | |
568 | { | |
569 | /* The partial symbol table associated with this compilation unit, | |
95554aad | 570 | or NULL for unread partial units. */ |
9291a0cd TT |
571 | struct partial_symtab *psymtab; |
572 | ||
573 | /* Data needed by the "quick" functions. */ | |
574 | struct dwarf2_per_cu_quick_data *quick; | |
575 | } v; | |
95554aad | 576 | |
796a7ff8 DE |
577 | /* The CUs we import using DW_TAG_imported_unit. This is filled in |
578 | while reading psymtabs, used to compute the psymtab dependencies, | |
579 | and then cleared. Then it is filled in again while reading full | |
580 | symbols, and only deleted when the objfile is destroyed. | |
581 | ||
582 | This is also used to work around a difference between the way gold | |
583 | generates .gdb_index version <=7 and the way gdb does. Arguably this | |
584 | is a gold bug. For symbols coming from TUs, gold records in the index | |
585 | the CU that includes the TU instead of the TU itself. This breaks | |
586 | dw2_lookup_symbol: It assumes that if the index says symbol X lives | |
587 | in CU/TU Y, then one need only expand Y and a subsequent lookup in Y | |
588 | will find X. Alas TUs live in their own symtab, so after expanding CU Y | |
589 | we need to look in TU Z to find X. Fortunately, this is akin to | |
590 | DW_TAG_imported_unit, so we just use the same mechanism: For | |
591 | .gdb_index version <=7 this also records the TUs that the CU referred | |
592 | to. Concurrently with this change gdb was modified to emit version 8 | |
593 | indices so we only pay a price for gold generated indices. */ | |
594 | VEC (dwarf2_per_cu_ptr) *imported_symtabs; | |
595 | ||
596 | /* Type units are grouped by their DW_AT_stmt_list entry so that they | |
597 | can share them. If this is a TU, this points to the containing | |
598 | symtab. */ | |
599 | struct type_unit_group *type_unit_group; | |
ae038cb0 DJ |
600 | }; |
601 | ||
348e048f DE |
602 | /* Entry in the signatured_types hash table. */ |
603 | ||
604 | struct signatured_type | |
605 | { | |
42e7ad6c DE |
606 | /* The "per_cu" object of this type. |
607 | N.B.: This is the first member so that it's easy to convert pointers | |
608 | between them. */ | |
609 | struct dwarf2_per_cu_data per_cu; | |
610 | ||
3019eac3 | 611 | /* The type's signature. */ |
348e048f DE |
612 | ULONGEST signature; |
613 | ||
3019eac3 | 614 | /* Offset in the TU of the type's DIE, as read from the TU header. |
c88ee1f0 DE |
615 | If this TU is a DWO stub and the definition lives in a DWO file |
616 | (specified by DW_AT_GNU_dwo_name), this value is unusable. */ | |
3019eac3 DE |
617 | cu_offset type_offset_in_tu; |
618 | ||
619 | /* Offset in the section of the type's DIE. | |
620 | If the definition lives in a DWO file, this is the offset in the | |
621 | .debug_types.dwo section. | |
622 | The value is zero until the actual value is known. | |
623 | Zero is otherwise not a valid section offset. */ | |
624 | sect_offset type_offset_in_section; | |
348e048f DE |
625 | }; |
626 | ||
094b34ac DE |
627 | /* A struct that can be used as a hash key for tables based on DW_AT_stmt_list. |
628 | This includes type_unit_group and quick_file_names. */ | |
629 | ||
630 | struct stmt_list_hash | |
631 | { | |
632 | /* The DWO unit this table is from or NULL if there is none. */ | |
633 | struct dwo_unit *dwo_unit; | |
634 | ||
635 | /* Offset in .debug_line or .debug_line.dwo. */ | |
636 | sect_offset line_offset; | |
637 | }; | |
638 | ||
f4dc4d17 DE |
639 | /* Each element of dwarf2_per_objfile->type_unit_groups is a pointer to |
640 | an object of this type. */ | |
641 | ||
642 | struct type_unit_group | |
643 | { | |
644 | /* dwarf2read.c's main "handle" on the symtab. | |
645 | To simplify things we create an artificial CU that "includes" all the | |
646 | type units using this stmt_list so that the rest of the code still has | |
647 | a "per_cu" handle on the symtab. | |
648 | This PER_CU is recognized by having no section. */ | |
8a0459fd | 649 | #define IS_TYPE_UNIT_GROUP(per_cu) ((per_cu)->section == NULL) |
094b34ac DE |
650 | struct dwarf2_per_cu_data per_cu; |
651 | ||
652 | union | |
653 | { | |
654 | /* The TUs that share this DW_AT_stmt_list entry. | |
655 | This is added to while parsing type units to build partial symtabs, | |
656 | and is deleted afterwards and not used again. */ | |
657 | VEC (dwarf2_per_cu_ptr) *tus; | |
f4dc4d17 | 658 | |
094b34ac DE |
659 | /* When reading the line table in "quick" functions, we need a real TU. |
660 | Any will do, we know they all share the same DW_AT_stmt_list entry. | |
661 | For simplicity's sake, we pick the first one. */ | |
662 | struct dwarf2_per_cu_data *first_tu; | |
663 | } t; | |
f4dc4d17 DE |
664 | |
665 | /* The primary symtab. | |
094b34ac DE |
666 | Type units in a group needn't all be defined in the same source file, |
667 | so we create an essentially anonymous symtab as the primary symtab. */ | |
f4dc4d17 DE |
668 | struct symtab *primary_symtab; |
669 | ||
094b34ac DE |
670 | /* The data used to construct the hash key. */ |
671 | struct stmt_list_hash hash; | |
f4dc4d17 DE |
672 | |
673 | /* The number of symtabs from the line header. | |
674 | The value here must match line_header.num_file_names. */ | |
675 | unsigned int num_symtabs; | |
676 | ||
677 | /* The symbol tables for this TU (obtained from the files listed in | |
678 | DW_AT_stmt_list). | |
679 | WARNING: The order of entries here must match the order of entries | |
680 | in the line header. After the first TU using this type_unit_group, the | |
681 | line header for the subsequent TUs is recreated from this. This is done | |
682 | because we need to use the same symtabs for each TU using the same | |
683 | DW_AT_stmt_list value. Also note that symtabs may be repeated here, | |
684 | there's no guarantee the line header doesn't have duplicate entries. */ | |
685 | struct symtab **symtabs; | |
686 | }; | |
687 | ||
80626a55 | 688 | /* These sections are what may appear in a DWO file. */ |
3019eac3 DE |
689 | |
690 | struct dwo_sections | |
691 | { | |
692 | struct dwarf2_section_info abbrev; | |
3019eac3 DE |
693 | struct dwarf2_section_info line; |
694 | struct dwarf2_section_info loc; | |
09262596 DE |
695 | struct dwarf2_section_info macinfo; |
696 | struct dwarf2_section_info macro; | |
3019eac3 DE |
697 | struct dwarf2_section_info str; |
698 | struct dwarf2_section_info str_offsets; | |
80626a55 DE |
699 | /* In the case of a virtual DWO file, these two are unused. */ |
700 | struct dwarf2_section_info info; | |
3019eac3 DE |
701 | VEC (dwarf2_section_info_def) *types; |
702 | }; | |
703 | ||
c88ee1f0 | 704 | /* CUs/TUs in DWP/DWO files. */ |
3019eac3 DE |
705 | |
706 | struct dwo_unit | |
707 | { | |
708 | /* Backlink to the containing struct dwo_file. */ | |
709 | struct dwo_file *dwo_file; | |
710 | ||
711 | /* The "id" that distinguishes this CU/TU. | |
712 | .debug_info calls this "dwo_id", .debug_types calls this "signature". | |
713 | Since signatures came first, we stick with it for consistency. */ | |
714 | ULONGEST signature; | |
715 | ||
716 | /* The section this CU/TU lives in, in the DWO file. */ | |
8a0459fd | 717 | struct dwarf2_section_info *section; |
3019eac3 DE |
718 | |
719 | /* Same as dwarf2_per_cu_data:{offset,length} but for the DWO section. */ | |
720 | sect_offset offset; | |
721 | unsigned int length; | |
722 | ||
723 | /* For types, offset in the type's DIE of the type defined by this TU. */ | |
724 | cu_offset type_offset_in_tu; | |
725 | }; | |
726 | ||
80626a55 DE |
727 | /* Data for one DWO file. |
728 | This includes virtual DWO files that have been packaged into a | |
729 | DWP file. */ | |
3019eac3 DE |
730 | |
731 | struct dwo_file | |
732 | { | |
80626a55 DE |
733 | /* The DW_AT_GNU_dwo_name attribute. This is the hash key. |
734 | For virtual DWO files the name is constructed from the section offsets | |
735 | of abbrev,line,loc,str_offsets so that we combine virtual DWO files | |
736 | from related CU+TUs. */ | |
737 | const char *name; | |
3019eac3 | 738 | |
80626a55 DE |
739 | /* The bfd, when the file is open. Otherwise this is NULL. |
740 | This is unused(NULL) for virtual DWO files where we use dwp_file.dbfd. */ | |
741 | bfd *dbfd; | |
3019eac3 DE |
742 | |
743 | /* Section info for this file. */ | |
744 | struct dwo_sections sections; | |
745 | ||
746 | /* Table of CUs in the file. | |
747 | Each element is a struct dwo_unit. */ | |
748 | htab_t cus; | |
749 | ||
750 | /* Table of TUs in the file. | |
751 | Each element is a struct dwo_unit. */ | |
752 | htab_t tus; | |
753 | }; | |
754 | ||
80626a55 DE |
755 | /* These sections are what may appear in a DWP file. */ |
756 | ||
757 | struct dwp_sections | |
758 | { | |
759 | struct dwarf2_section_info str; | |
760 | struct dwarf2_section_info cu_index; | |
761 | struct dwarf2_section_info tu_index; | |
762 | /* The .debug_info.dwo, .debug_types.dwo, and other sections are referenced | |
763 | by section number. We don't need to record them here. */ | |
764 | }; | |
765 | ||
766 | /* These sections are what may appear in a virtual DWO file. */ | |
767 | ||
768 | struct virtual_dwo_sections | |
769 | { | |
770 | struct dwarf2_section_info abbrev; | |
771 | struct dwarf2_section_info line; | |
772 | struct dwarf2_section_info loc; | |
773 | struct dwarf2_section_info macinfo; | |
774 | struct dwarf2_section_info macro; | |
775 | struct dwarf2_section_info str_offsets; | |
776 | /* Each DWP hash table entry records one CU or one TU. | |
8a0459fd | 777 | That is recorded here, and copied to dwo_unit.section. */ |
80626a55 DE |
778 | struct dwarf2_section_info info_or_types; |
779 | }; | |
780 | ||
781 | /* Contents of DWP hash tables. */ | |
782 | ||
783 | struct dwp_hash_table | |
784 | { | |
785 | uint32_t nr_units, nr_slots; | |
786 | const gdb_byte *hash_table, *unit_table, *section_pool; | |
787 | }; | |
788 | ||
789 | /* Data for one DWP file. */ | |
790 | ||
791 | struct dwp_file | |
792 | { | |
793 | /* Name of the file. */ | |
794 | const char *name; | |
795 | ||
796 | /* The bfd, when the file is open. Otherwise this is NULL. */ | |
797 | bfd *dbfd; | |
798 | ||
799 | /* Section info for this file. */ | |
800 | struct dwp_sections sections; | |
801 | ||
802 | /* Table of CUs in the file. */ | |
803 | const struct dwp_hash_table *cus; | |
804 | ||
805 | /* Table of TUs in the file. */ | |
806 | const struct dwp_hash_table *tus; | |
807 | ||
808 | /* Table of loaded CUs/TUs. Each entry is a struct dwo_unit *. */ | |
809 | htab_t loaded_cutus; | |
810 | ||
811 | /* Table to map ELF section numbers to their sections. */ | |
812 | unsigned int num_sections; | |
813 | asection **elf_sections; | |
814 | }; | |
815 | ||
36586728 TT |
816 | /* This represents a '.dwz' file. */ |
817 | ||
818 | struct dwz_file | |
819 | { | |
820 | /* A dwz file can only contain a few sections. */ | |
821 | struct dwarf2_section_info abbrev; | |
822 | struct dwarf2_section_info info; | |
823 | struct dwarf2_section_info str; | |
824 | struct dwarf2_section_info line; | |
825 | struct dwarf2_section_info macro; | |
2ec9a5e0 | 826 | struct dwarf2_section_info gdb_index; |
36586728 TT |
827 | |
828 | /* The dwz's BFD. */ | |
829 | bfd *dwz_bfd; | |
830 | }; | |
831 | ||
0963b4bd MS |
832 | /* Struct used to pass misc. parameters to read_die_and_children, et |
833 | al. which are used for both .debug_info and .debug_types dies. | |
834 | All parameters here are unchanging for the life of the call. This | |
dee91e82 | 835 | struct exists to abstract away the constant parameters of die reading. */ |
93311388 DE |
836 | |
837 | struct die_reader_specs | |
838 | { | |
dee91e82 | 839 | /* die_section->asection->owner. */ |
93311388 DE |
840 | bfd* abfd; |
841 | ||
842 | /* The CU of the DIE we are parsing. */ | |
843 | struct dwarf2_cu *cu; | |
844 | ||
80626a55 | 845 | /* Non-NULL if reading a DWO file (including one packaged into a DWP). */ |
3019eac3 DE |
846 | struct dwo_file *dwo_file; |
847 | ||
dee91e82 | 848 | /* The section the die comes from. |
3019eac3 | 849 | This is either .debug_info or .debug_types, or the .dwo variants. */ |
dee91e82 DE |
850 | struct dwarf2_section_info *die_section; |
851 | ||
852 | /* die_section->buffer. */ | |
853 | gdb_byte *buffer; | |
f664829e DE |
854 | |
855 | /* The end of the buffer. */ | |
856 | const gdb_byte *buffer_end; | |
93311388 DE |
857 | }; |
858 | ||
fd820528 | 859 | /* Type of function passed to init_cutu_and_read_dies, et.al. */ |
dee91e82 DE |
860 | typedef void (die_reader_func_ftype) (const struct die_reader_specs *reader, |
861 | gdb_byte *info_ptr, | |
862 | struct die_info *comp_unit_die, | |
863 | int has_children, | |
864 | void *data); | |
865 | ||
debd256d JB |
866 | /* The line number information for a compilation unit (found in the |
867 | .debug_line section) begins with a "statement program header", | |
868 | which contains the following information. */ | |
869 | struct line_header | |
870 | { | |
871 | unsigned int total_length; | |
872 | unsigned short version; | |
873 | unsigned int header_length; | |
874 | unsigned char minimum_instruction_length; | |
2dc7f7b3 | 875 | unsigned char maximum_ops_per_instruction; |
debd256d JB |
876 | unsigned char default_is_stmt; |
877 | int line_base; | |
878 | unsigned char line_range; | |
879 | unsigned char opcode_base; | |
880 | ||
881 | /* standard_opcode_lengths[i] is the number of operands for the | |
882 | standard opcode whose value is i. This means that | |
883 | standard_opcode_lengths[0] is unused, and the last meaningful | |
884 | element is standard_opcode_lengths[opcode_base - 1]. */ | |
885 | unsigned char *standard_opcode_lengths; | |
886 | ||
887 | /* The include_directories table. NOTE! These strings are not | |
888 | allocated with xmalloc; instead, they are pointers into | |
889 | debug_line_buffer. If you try to free them, `free' will get | |
890 | indigestion. */ | |
891 | unsigned int num_include_dirs, include_dirs_size; | |
892 | char **include_dirs; | |
893 | ||
894 | /* The file_names table. NOTE! These strings are not allocated | |
895 | with xmalloc; instead, they are pointers into debug_line_buffer. | |
896 | Don't try to free them directly. */ | |
897 | unsigned int num_file_names, file_names_size; | |
898 | struct file_entry | |
c906108c | 899 | { |
debd256d JB |
900 | char *name; |
901 | unsigned int dir_index; | |
902 | unsigned int mod_time; | |
903 | unsigned int length; | |
aaa75496 | 904 | int included_p; /* Non-zero if referenced by the Line Number Program. */ |
cb1df416 | 905 | struct symtab *symtab; /* The associated symbol table, if any. */ |
debd256d JB |
906 | } *file_names; |
907 | ||
908 | /* The start and end of the statement program following this | |
6502dd73 | 909 | header. These point into dwarf2_per_objfile->line_buffer. */ |
fe1b8b76 | 910 | gdb_byte *statement_program_start, *statement_program_end; |
debd256d | 911 | }; |
c906108c SS |
912 | |
913 | /* When we construct a partial symbol table entry we only | |
0963b4bd | 914 | need this much information. */ |
c906108c SS |
915 | struct partial_die_info |
916 | { | |
72bf9492 | 917 | /* Offset of this DIE. */ |
b64f50a1 | 918 | sect_offset offset; |
72bf9492 DJ |
919 | |
920 | /* DWARF-2 tag for this DIE. */ | |
921 | ENUM_BITFIELD(dwarf_tag) tag : 16; | |
922 | ||
72bf9492 DJ |
923 | /* Assorted flags describing the data found in this DIE. */ |
924 | unsigned int has_children : 1; | |
925 | unsigned int is_external : 1; | |
926 | unsigned int is_declaration : 1; | |
927 | unsigned int has_type : 1; | |
928 | unsigned int has_specification : 1; | |
929 | unsigned int has_pc_info : 1; | |
481860b3 | 930 | unsigned int may_be_inlined : 1; |
72bf9492 DJ |
931 | |
932 | /* Flag set if the SCOPE field of this structure has been | |
933 | computed. */ | |
934 | unsigned int scope_set : 1; | |
935 | ||
fa4028e9 JB |
936 | /* Flag set if the DIE has a byte_size attribute. */ |
937 | unsigned int has_byte_size : 1; | |
938 | ||
98bfdba5 PA |
939 | /* Flag set if any of the DIE's children are template arguments. */ |
940 | unsigned int has_template_arguments : 1; | |
941 | ||
abc72ce4 DE |
942 | /* Flag set if fixup_partial_die has been called on this die. */ |
943 | unsigned int fixup_called : 1; | |
944 | ||
36586728 TT |
945 | /* Flag set if DW_TAG_imported_unit uses DW_FORM_GNU_ref_alt. */ |
946 | unsigned int is_dwz : 1; | |
947 | ||
948 | /* Flag set if spec_offset uses DW_FORM_GNU_ref_alt. */ | |
949 | unsigned int spec_is_dwz : 1; | |
950 | ||
72bf9492 | 951 | /* The name of this DIE. Normally the value of DW_AT_name, but |
94af9270 | 952 | sometimes a default name for unnamed DIEs. */ |
15d034d0 | 953 | const char *name; |
72bf9492 | 954 | |
abc72ce4 DE |
955 | /* The linkage name, if present. */ |
956 | const char *linkage_name; | |
957 | ||
72bf9492 DJ |
958 | /* The scope to prepend to our children. This is generally |
959 | allocated on the comp_unit_obstack, so will disappear | |
960 | when this compilation unit leaves the cache. */ | |
15d034d0 | 961 | const char *scope; |
72bf9492 | 962 | |
95554aad TT |
963 | /* Some data associated with the partial DIE. The tag determines |
964 | which field is live. */ | |
965 | union | |
966 | { | |
967 | /* The location description associated with this DIE, if any. */ | |
968 | struct dwarf_block *locdesc; | |
969 | /* The offset of an import, for DW_TAG_imported_unit. */ | |
970 | sect_offset offset; | |
971 | } d; | |
72bf9492 DJ |
972 | |
973 | /* If HAS_PC_INFO, the PC range associated with this DIE. */ | |
c906108c SS |
974 | CORE_ADDR lowpc; |
975 | CORE_ADDR highpc; | |
72bf9492 | 976 | |
93311388 | 977 | /* Pointer into the info_buffer (or types_buffer) pointing at the target of |
72bf9492 | 978 | DW_AT_sibling, if any. */ |
abc72ce4 DE |
979 | /* NOTE: This member isn't strictly necessary, read_partial_die could |
980 | return DW_AT_sibling values to its caller load_partial_dies. */ | |
fe1b8b76 | 981 | gdb_byte *sibling; |
72bf9492 DJ |
982 | |
983 | /* If HAS_SPECIFICATION, the offset of the DIE referred to by | |
984 | DW_AT_specification (or DW_AT_abstract_origin or | |
985 | DW_AT_extension). */ | |
b64f50a1 | 986 | sect_offset spec_offset; |
72bf9492 DJ |
987 | |
988 | /* Pointers to this DIE's parent, first child, and next sibling, | |
989 | if any. */ | |
990 | struct partial_die_info *die_parent, *die_child, *die_sibling; | |
c906108c SS |
991 | }; |
992 | ||
0963b4bd | 993 | /* This data structure holds the information of an abbrev. */ |
c906108c SS |
994 | struct abbrev_info |
995 | { | |
996 | unsigned int number; /* number identifying abbrev */ | |
997 | enum dwarf_tag tag; /* dwarf tag */ | |
f3dd6933 DJ |
998 | unsigned short has_children; /* boolean */ |
999 | unsigned short num_attrs; /* number of attributes */ | |
c906108c SS |
1000 | struct attr_abbrev *attrs; /* an array of attribute descriptions */ |
1001 | struct abbrev_info *next; /* next in chain */ | |
1002 | }; | |
1003 | ||
1004 | struct attr_abbrev | |
1005 | { | |
9d25dd43 DE |
1006 | ENUM_BITFIELD(dwarf_attribute) name : 16; |
1007 | ENUM_BITFIELD(dwarf_form) form : 16; | |
c906108c SS |
1008 | }; |
1009 | ||
433df2d4 DE |
1010 | /* Size of abbrev_table.abbrev_hash_table. */ |
1011 | #define ABBREV_HASH_SIZE 121 | |
1012 | ||
1013 | /* Top level data structure to contain an abbreviation table. */ | |
1014 | ||
1015 | struct abbrev_table | |
1016 | { | |
f4dc4d17 DE |
1017 | /* Where the abbrev table came from. |
1018 | This is used as a sanity check when the table is used. */ | |
433df2d4 DE |
1019 | sect_offset offset; |
1020 | ||
1021 | /* Storage for the abbrev table. */ | |
1022 | struct obstack abbrev_obstack; | |
1023 | ||
1024 | /* Hash table of abbrevs. | |
1025 | This is an array of size ABBREV_HASH_SIZE allocated in abbrev_obstack. | |
1026 | It could be statically allocated, but the previous code didn't so we | |
1027 | don't either. */ | |
1028 | struct abbrev_info **abbrevs; | |
1029 | }; | |
1030 | ||
0963b4bd | 1031 | /* Attributes have a name and a value. */ |
b60c80d6 DJ |
1032 | struct attribute |
1033 | { | |
9d25dd43 | 1034 | ENUM_BITFIELD(dwarf_attribute) name : 16; |
8285870a JK |
1035 | ENUM_BITFIELD(dwarf_form) form : 15; |
1036 | ||
1037 | /* Has DW_STRING already been updated by dwarf2_canonicalize_name? This | |
1038 | field should be in u.str (existing only for DW_STRING) but it is kept | |
1039 | here for better struct attribute alignment. */ | |
1040 | unsigned int string_is_canonical : 1; | |
1041 | ||
b60c80d6 DJ |
1042 | union |
1043 | { | |
15d034d0 | 1044 | const char *str; |
b60c80d6 | 1045 | struct dwarf_block *blk; |
43bbcdc2 PH |
1046 | ULONGEST unsnd; |
1047 | LONGEST snd; | |
b60c80d6 | 1048 | CORE_ADDR addr; |
348e048f | 1049 | struct signatured_type *signatured_type; |
b60c80d6 DJ |
1050 | } |
1051 | u; | |
1052 | }; | |
1053 | ||
0963b4bd | 1054 | /* This data structure holds a complete die structure. */ |
c906108c SS |
1055 | struct die_info |
1056 | { | |
76815b17 DE |
1057 | /* DWARF-2 tag for this DIE. */ |
1058 | ENUM_BITFIELD(dwarf_tag) tag : 16; | |
1059 | ||
1060 | /* Number of attributes */ | |
98bfdba5 PA |
1061 | unsigned char num_attrs; |
1062 | ||
1063 | /* True if we're presently building the full type name for the | |
1064 | type derived from this DIE. */ | |
1065 | unsigned char building_fullname : 1; | |
76815b17 DE |
1066 | |
1067 | /* Abbrev number */ | |
1068 | unsigned int abbrev; | |
1069 | ||
93311388 | 1070 | /* Offset in .debug_info or .debug_types section. */ |
b64f50a1 | 1071 | sect_offset offset; |
78ba4af6 JB |
1072 | |
1073 | /* The dies in a compilation unit form an n-ary tree. PARENT | |
1074 | points to this die's parent; CHILD points to the first child of | |
1075 | this node; and all the children of a given node are chained | |
4950bc1c | 1076 | together via their SIBLING fields. */ |
639d11d3 DC |
1077 | struct die_info *child; /* Its first child, if any. */ |
1078 | struct die_info *sibling; /* Its next sibling, if any. */ | |
1079 | struct die_info *parent; /* Its parent, if any. */ | |
c906108c | 1080 | |
b60c80d6 DJ |
1081 | /* An array of attributes, with NUM_ATTRS elements. There may be |
1082 | zero, but it's not common and zero-sized arrays are not | |
1083 | sufficiently portable C. */ | |
1084 | struct attribute attrs[1]; | |
c906108c SS |
1085 | }; |
1086 | ||
0963b4bd | 1087 | /* Get at parts of an attribute structure. */ |
c906108c SS |
1088 | |
1089 | #define DW_STRING(attr) ((attr)->u.str) | |
8285870a | 1090 | #define DW_STRING_IS_CANONICAL(attr) ((attr)->string_is_canonical) |
c906108c SS |
1091 | #define DW_UNSND(attr) ((attr)->u.unsnd) |
1092 | #define DW_BLOCK(attr) ((attr)->u.blk) | |
1093 | #define DW_SND(attr) ((attr)->u.snd) | |
1094 | #define DW_ADDR(attr) ((attr)->u.addr) | |
348e048f | 1095 | #define DW_SIGNATURED_TYPE(attr) ((attr)->u.signatured_type) |
c906108c | 1096 | |
0963b4bd | 1097 | /* Blocks are a bunch of untyped bytes. */ |
c906108c SS |
1098 | struct dwarf_block |
1099 | { | |
56eb65bd | 1100 | size_t size; |
1d6edc3c JK |
1101 | |
1102 | /* Valid only if SIZE is not zero. */ | |
fe1b8b76 | 1103 | gdb_byte *data; |
c906108c SS |
1104 | }; |
1105 | ||
c906108c SS |
1106 | #ifndef ATTR_ALLOC_CHUNK |
1107 | #define ATTR_ALLOC_CHUNK 4 | |
1108 | #endif | |
1109 | ||
c906108c SS |
1110 | /* Allocate fields for structs, unions and enums in this size. */ |
1111 | #ifndef DW_FIELD_ALLOC_CHUNK | |
1112 | #define DW_FIELD_ALLOC_CHUNK 4 | |
1113 | #endif | |
1114 | ||
c906108c SS |
1115 | /* FIXME: We might want to set this from BFD via bfd_arch_bits_per_byte, |
1116 | but this would require a corresponding change in unpack_field_as_long | |
1117 | and friends. */ | |
1118 | static int bits_per_byte = 8; | |
1119 | ||
1120 | /* The routines that read and process dies for a C struct or C++ class | |
1121 | pass lists of data member fields and lists of member function fields | |
1122 | in an instance of a field_info structure, as defined below. */ | |
1123 | struct field_info | |
c5aa993b | 1124 | { |
0963b4bd | 1125 | /* List of data member and baseclasses fields. */ |
c5aa993b JM |
1126 | struct nextfield |
1127 | { | |
1128 | struct nextfield *next; | |
1129 | int accessibility; | |
1130 | int virtuality; | |
1131 | struct field field; | |
1132 | } | |
7d0ccb61 | 1133 | *fields, *baseclasses; |
c906108c | 1134 | |
7d0ccb61 | 1135 | /* Number of fields (including baseclasses). */ |
c5aa993b | 1136 | int nfields; |
c906108c | 1137 | |
c5aa993b JM |
1138 | /* Number of baseclasses. */ |
1139 | int nbaseclasses; | |
c906108c | 1140 | |
c5aa993b JM |
1141 | /* Set if the accesibility of one of the fields is not public. */ |
1142 | int non_public_fields; | |
c906108c | 1143 | |
c5aa993b JM |
1144 | /* Member function fields array, entries are allocated in the order they |
1145 | are encountered in the object file. */ | |
1146 | struct nextfnfield | |
1147 | { | |
1148 | struct nextfnfield *next; | |
1149 | struct fn_field fnfield; | |
1150 | } | |
1151 | *fnfields; | |
c906108c | 1152 | |
c5aa993b JM |
1153 | /* Member function fieldlist array, contains name of possibly overloaded |
1154 | member function, number of overloaded member functions and a pointer | |
1155 | to the head of the member function field chain. */ | |
1156 | struct fnfieldlist | |
1157 | { | |
15d034d0 | 1158 | const char *name; |
c5aa993b JM |
1159 | int length; |
1160 | struct nextfnfield *head; | |
1161 | } | |
1162 | *fnfieldlists; | |
c906108c | 1163 | |
c5aa993b JM |
1164 | /* Number of entries in the fnfieldlists array. */ |
1165 | int nfnfields; | |
98751a41 JK |
1166 | |
1167 | /* typedefs defined inside this class. TYPEDEF_FIELD_LIST contains head of | |
1168 | a NULL terminated list of TYPEDEF_FIELD_LIST_COUNT elements. */ | |
1169 | struct typedef_field_list | |
1170 | { | |
1171 | struct typedef_field field; | |
1172 | struct typedef_field_list *next; | |
1173 | } | |
1174 | *typedef_field_list; | |
1175 | unsigned typedef_field_list_count; | |
c5aa993b | 1176 | }; |
c906108c | 1177 | |
10b3939b DJ |
1178 | /* One item on the queue of compilation units to read in full symbols |
1179 | for. */ | |
1180 | struct dwarf2_queue_item | |
1181 | { | |
1182 | struct dwarf2_per_cu_data *per_cu; | |
95554aad | 1183 | enum language pretend_language; |
10b3939b DJ |
1184 | struct dwarf2_queue_item *next; |
1185 | }; | |
1186 | ||
1187 | /* The current queue. */ | |
1188 | static struct dwarf2_queue_item *dwarf2_queue, *dwarf2_queue_tail; | |
1189 | ||
ae038cb0 DJ |
1190 | /* Loaded secondary compilation units are kept in memory until they |
1191 | have not been referenced for the processing of this many | |
1192 | compilation units. Set this to zero to disable caching. Cache | |
1193 | sizes of up to at least twenty will improve startup time for | |
1194 | typical inter-CU-reference binaries, at an obvious memory cost. */ | |
1195 | static int dwarf2_max_cache_age = 5; | |
920d2a44 AC |
1196 | static void |
1197 | show_dwarf2_max_cache_age (struct ui_file *file, int from_tty, | |
1198 | struct cmd_list_element *c, const char *value) | |
1199 | { | |
3e43a32a MS |
1200 | fprintf_filtered (file, _("The upper bound on the age of cached " |
1201 | "dwarf2 compilation units is %s.\n"), | |
920d2a44 AC |
1202 | value); |
1203 | } | |
1204 | ||
ae038cb0 | 1205 | |
0963b4bd | 1206 | /* Various complaints about symbol reading that don't abort the process. */ |
c906108c | 1207 | |
4d3c2250 KB |
1208 | static void |
1209 | dwarf2_statement_list_fits_in_line_number_section_complaint (void) | |
2e276125 | 1210 | { |
4d3c2250 | 1211 | complaint (&symfile_complaints, |
e2e0b3e5 | 1212 | _("statement list doesn't fit in .debug_line section")); |
4d3c2250 KB |
1213 | } |
1214 | ||
25e43795 DJ |
1215 | static void |
1216 | dwarf2_debug_line_missing_file_complaint (void) | |
1217 | { | |
1218 | complaint (&symfile_complaints, | |
1219 | _(".debug_line section has line data without a file")); | |
1220 | } | |
1221 | ||
59205f5a JB |
1222 | static void |
1223 | dwarf2_debug_line_missing_end_sequence_complaint (void) | |
1224 | { | |
1225 | complaint (&symfile_complaints, | |
3e43a32a MS |
1226 | _(".debug_line section has line " |
1227 | "program sequence without an end")); | |
59205f5a JB |
1228 | } |
1229 | ||
4d3c2250 KB |
1230 | static void |
1231 | dwarf2_complex_location_expr_complaint (void) | |
2e276125 | 1232 | { |
e2e0b3e5 | 1233 | complaint (&symfile_complaints, _("location expression too complex")); |
4d3c2250 KB |
1234 | } |
1235 | ||
4d3c2250 KB |
1236 | static void |
1237 | dwarf2_const_value_length_mismatch_complaint (const char *arg1, int arg2, | |
1238 | int arg3) | |
2e276125 | 1239 | { |
4d3c2250 | 1240 | complaint (&symfile_complaints, |
3e43a32a MS |
1241 | _("const value length mismatch for '%s', got %d, expected %d"), |
1242 | arg1, arg2, arg3); | |
4d3c2250 KB |
1243 | } |
1244 | ||
1245 | static void | |
f664829e | 1246 | dwarf2_section_buffer_overflow_complaint (struct dwarf2_section_info *section) |
2e276125 | 1247 | { |
4d3c2250 | 1248 | complaint (&symfile_complaints, |
f664829e DE |
1249 | _("debug info runs off end of %s section" |
1250 | " [in module %s]"), | |
1251 | section->asection->name, | |
1252 | bfd_get_filename (section->asection->owner)); | |
4d3c2250 KB |
1253 | } |
1254 | ||
1255 | static void | |
1256 | dwarf2_macro_malformed_definition_complaint (const char *arg1) | |
8e19ed76 | 1257 | { |
4d3c2250 | 1258 | complaint (&symfile_complaints, |
3e43a32a MS |
1259 | _("macro debug info contains a " |
1260 | "malformed macro definition:\n`%s'"), | |
4d3c2250 KB |
1261 | arg1); |
1262 | } | |
1263 | ||
1264 | static void | |
1265 | dwarf2_invalid_attrib_class_complaint (const char *arg1, const char *arg2) | |
8b2dbe47 | 1266 | { |
4d3c2250 | 1267 | complaint (&symfile_complaints, |
3e43a32a MS |
1268 | _("invalid attribute class or form for '%s' in '%s'"), |
1269 | arg1, arg2); | |
4d3c2250 | 1270 | } |
c906108c | 1271 | |
c906108c SS |
1272 | /* local function prototypes */ |
1273 | ||
4efb68b1 | 1274 | static void dwarf2_locate_sections (bfd *, asection *, void *); |
c906108c | 1275 | |
aaa75496 JB |
1276 | static void dwarf2_create_include_psymtab (char *, struct partial_symtab *, |
1277 | struct objfile *); | |
1278 | ||
918dd910 JK |
1279 | static void dwarf2_find_base_address (struct die_info *die, |
1280 | struct dwarf2_cu *cu); | |
1281 | ||
0018ea6f DE |
1282 | static struct partial_symtab *create_partial_symtab |
1283 | (struct dwarf2_per_cu_data *per_cu, const char *name); | |
1284 | ||
c67a9c90 | 1285 | static void dwarf2_build_psymtabs_hard (struct objfile *); |
c906108c | 1286 | |
72bf9492 DJ |
1287 | static void scan_partial_symbols (struct partial_die_info *, |
1288 | CORE_ADDR *, CORE_ADDR *, | |
5734ee8b | 1289 | int, struct dwarf2_cu *); |
c906108c | 1290 | |
72bf9492 DJ |
1291 | static void add_partial_symbol (struct partial_die_info *, |
1292 | struct dwarf2_cu *); | |
63d06c5c | 1293 | |
72bf9492 DJ |
1294 | static void add_partial_namespace (struct partial_die_info *pdi, |
1295 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 1296 | int need_pc, struct dwarf2_cu *cu); |
63d06c5c | 1297 | |
5d7cb8df JK |
1298 | static void add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, |
1299 | CORE_ADDR *highpc, int need_pc, | |
1300 | struct dwarf2_cu *cu); | |
1301 | ||
72bf9492 DJ |
1302 | static void add_partial_enumeration (struct partial_die_info *enum_pdi, |
1303 | struct dwarf2_cu *cu); | |
91c24f0a | 1304 | |
bc30ff58 JB |
1305 | static void add_partial_subprogram (struct partial_die_info *pdi, |
1306 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 1307 | int need_pc, struct dwarf2_cu *cu); |
bc30ff58 | 1308 | |
257e7a09 YQ |
1309 | static void dwarf2_read_symtab (struct partial_symtab *, |
1310 | struct objfile *); | |
c906108c | 1311 | |
a14ed312 | 1312 | static void psymtab_to_symtab_1 (struct partial_symtab *); |
c906108c | 1313 | |
433df2d4 DE |
1314 | static struct abbrev_info *abbrev_table_lookup_abbrev |
1315 | (const struct abbrev_table *, unsigned int); | |
1316 | ||
1317 | static struct abbrev_table *abbrev_table_read_table | |
1318 | (struct dwarf2_section_info *, sect_offset); | |
1319 | ||
1320 | static void abbrev_table_free (struct abbrev_table *); | |
1321 | ||
f4dc4d17 DE |
1322 | static void abbrev_table_free_cleanup (void *); |
1323 | ||
dee91e82 DE |
1324 | static void dwarf2_read_abbrevs (struct dwarf2_cu *, |
1325 | struct dwarf2_section_info *); | |
c906108c | 1326 | |
f3dd6933 | 1327 | static void dwarf2_free_abbrev_table (void *); |
c906108c | 1328 | |
6caca83c CC |
1329 | static unsigned int peek_abbrev_code (bfd *, gdb_byte *); |
1330 | ||
dee91e82 DE |
1331 | static struct partial_die_info *load_partial_dies |
1332 | (const struct die_reader_specs *, gdb_byte *, int); | |
72bf9492 | 1333 | |
dee91e82 DE |
1334 | static gdb_byte *read_partial_die (const struct die_reader_specs *, |
1335 | struct partial_die_info *, | |
1336 | struct abbrev_info *, | |
1337 | unsigned int, | |
1338 | gdb_byte *); | |
c906108c | 1339 | |
36586728 | 1340 | static struct partial_die_info *find_partial_die (sect_offset, int, |
10b3939b | 1341 | struct dwarf2_cu *); |
72bf9492 DJ |
1342 | |
1343 | static void fixup_partial_die (struct partial_die_info *, | |
1344 | struct dwarf2_cu *); | |
1345 | ||
dee91e82 DE |
1346 | static gdb_byte *read_attribute (const struct die_reader_specs *, |
1347 | struct attribute *, struct attr_abbrev *, | |
1348 | gdb_byte *); | |
a8329558 | 1349 | |
a1855c1d | 1350 | static unsigned int read_1_byte (bfd *, const gdb_byte *); |
c906108c | 1351 | |
a1855c1d | 1352 | static int read_1_signed_byte (bfd *, const gdb_byte *); |
c906108c | 1353 | |
a1855c1d | 1354 | static unsigned int read_2_bytes (bfd *, const gdb_byte *); |
c906108c | 1355 | |
a1855c1d | 1356 | static unsigned int read_4_bytes (bfd *, const gdb_byte *); |
c906108c | 1357 | |
a1855c1d | 1358 | static ULONGEST read_8_bytes (bfd *, const gdb_byte *); |
c906108c | 1359 | |
fe1b8b76 | 1360 | static CORE_ADDR read_address (bfd *, gdb_byte *ptr, struct dwarf2_cu *, |
891d2f0b | 1361 | unsigned int *); |
c906108c | 1362 | |
c764a876 DE |
1363 | static LONGEST read_initial_length (bfd *, gdb_byte *, unsigned int *); |
1364 | ||
1365 | static LONGEST read_checked_initial_length_and_offset | |
1366 | (bfd *, gdb_byte *, const struct comp_unit_head *, | |
1367 | unsigned int *, unsigned int *); | |
613e1657 | 1368 | |
fe1b8b76 | 1369 | static LONGEST read_offset (bfd *, gdb_byte *, const struct comp_unit_head *, |
c764a876 DE |
1370 | unsigned int *); |
1371 | ||
1372 | static LONGEST read_offset_1 (bfd *, gdb_byte *, unsigned int); | |
613e1657 | 1373 | |
f4dc4d17 DE |
1374 | static sect_offset read_abbrev_offset (struct dwarf2_section_info *, |
1375 | sect_offset); | |
1376 | ||
fe1b8b76 | 1377 | static gdb_byte *read_n_bytes (bfd *, gdb_byte *, unsigned int); |
c906108c | 1378 | |
9b1c24c8 | 1379 | static char *read_direct_string (bfd *, gdb_byte *, unsigned int *); |
c906108c | 1380 | |
fe1b8b76 JB |
1381 | static char *read_indirect_string (bfd *, gdb_byte *, |
1382 | const struct comp_unit_head *, | |
1383 | unsigned int *); | |
4bdf3d34 | 1384 | |
36586728 TT |
1385 | static char *read_indirect_string_from_dwz (struct dwz_file *, LONGEST); |
1386 | ||
12df843f | 1387 | static ULONGEST read_unsigned_leb128 (bfd *, gdb_byte *, unsigned int *); |
c906108c | 1388 | |
12df843f | 1389 | static LONGEST read_signed_leb128 (bfd *, gdb_byte *, unsigned int *); |
c906108c | 1390 | |
3019eac3 DE |
1391 | static CORE_ADDR read_addr_index_from_leb128 (struct dwarf2_cu *, gdb_byte *, |
1392 | unsigned int *); | |
1393 | ||
1394 | static char *read_str_index (const struct die_reader_specs *reader, | |
1395 | struct dwarf2_cu *cu, ULONGEST str_index); | |
1396 | ||
e142c38c | 1397 | static void set_cu_language (unsigned int, struct dwarf2_cu *); |
c906108c | 1398 | |
e142c38c DJ |
1399 | static struct attribute *dwarf2_attr (struct die_info *, unsigned int, |
1400 | struct dwarf2_cu *); | |
c906108c | 1401 | |
348e048f | 1402 | static struct attribute *dwarf2_attr_no_follow (struct die_info *, |
45e58e77 | 1403 | unsigned int); |
348e048f | 1404 | |
05cf31d1 JB |
1405 | static int dwarf2_flag_true_p (struct die_info *die, unsigned name, |
1406 | struct dwarf2_cu *cu); | |
1407 | ||
e142c38c | 1408 | static int die_is_declaration (struct die_info *, struct dwarf2_cu *cu); |
3ca72b44 | 1409 | |
e142c38c | 1410 | static struct die_info *die_specification (struct die_info *die, |
f2f0e013 | 1411 | struct dwarf2_cu **); |
63d06c5c | 1412 | |
debd256d JB |
1413 | static void free_line_header (struct line_header *lh); |
1414 | ||
aaa75496 JB |
1415 | static void add_file_name (struct line_header *, char *, unsigned int, |
1416 | unsigned int, unsigned int); | |
1417 | ||
3019eac3 DE |
1418 | static struct line_header *dwarf_decode_line_header (unsigned int offset, |
1419 | struct dwarf2_cu *cu); | |
debd256d | 1420 | |
f3f5162e DE |
1421 | static void dwarf_decode_lines (struct line_header *, const char *, |
1422 | struct dwarf2_cu *, struct partial_symtab *, | |
1423 | int); | |
c906108c | 1424 | |
72b9f47f | 1425 | static void dwarf2_start_subfile (char *, const char *, const char *); |
c906108c | 1426 | |
f4dc4d17 | 1427 | static void dwarf2_start_symtab (struct dwarf2_cu *, |
15d034d0 | 1428 | const char *, const char *, CORE_ADDR); |
f4dc4d17 | 1429 | |
a14ed312 | 1430 | static struct symbol *new_symbol (struct die_info *, struct type *, |
e7c27a73 | 1431 | struct dwarf2_cu *); |
c906108c | 1432 | |
34eaf542 TT |
1433 | static struct symbol *new_symbol_full (struct die_info *, struct type *, |
1434 | struct dwarf2_cu *, struct symbol *); | |
1435 | ||
a14ed312 | 1436 | static void dwarf2_const_value (struct attribute *, struct symbol *, |
e7c27a73 | 1437 | struct dwarf2_cu *); |
c906108c | 1438 | |
98bfdba5 PA |
1439 | static void dwarf2_const_value_attr (struct attribute *attr, |
1440 | struct type *type, | |
1441 | const char *name, | |
1442 | struct obstack *obstack, | |
12df843f | 1443 | struct dwarf2_cu *cu, LONGEST *value, |
98bfdba5 PA |
1444 | gdb_byte **bytes, |
1445 | struct dwarf2_locexpr_baton **baton); | |
2df3850c | 1446 | |
e7c27a73 | 1447 | static struct type *die_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 1448 | |
b4ba55a1 JB |
1449 | static int need_gnat_info (struct dwarf2_cu *); |
1450 | ||
3e43a32a MS |
1451 | static struct type *die_descriptive_type (struct die_info *, |
1452 | struct dwarf2_cu *); | |
b4ba55a1 JB |
1453 | |
1454 | static void set_descriptive_type (struct type *, struct die_info *, | |
1455 | struct dwarf2_cu *); | |
1456 | ||
e7c27a73 DJ |
1457 | static struct type *die_containing_type (struct die_info *, |
1458 | struct dwarf2_cu *); | |
c906108c | 1459 | |
673bfd45 DE |
1460 | static struct type *lookup_die_type (struct die_info *, struct attribute *, |
1461 | struct dwarf2_cu *); | |
c906108c | 1462 | |
f792889a | 1463 | static struct type *read_type_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1464 | |
673bfd45 DE |
1465 | static struct type *read_type_die_1 (struct die_info *, struct dwarf2_cu *); |
1466 | ||
0d5cff50 | 1467 | static const char *determine_prefix (struct die_info *die, struct dwarf2_cu *); |
63d06c5c | 1468 | |
6e70227d | 1469 | static char *typename_concat (struct obstack *obs, const char *prefix, |
f55ee35c JK |
1470 | const char *suffix, int physname, |
1471 | struct dwarf2_cu *cu); | |
63d06c5c | 1472 | |
e7c27a73 | 1473 | static void read_file_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1474 | |
348e048f DE |
1475 | static void read_type_unit_scope (struct die_info *, struct dwarf2_cu *); |
1476 | ||
e7c27a73 | 1477 | static void read_func_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1478 | |
e7c27a73 | 1479 | static void read_lexical_block_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1480 | |
96408a79 SA |
1481 | static void read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu); |
1482 | ||
ff013f42 JK |
1483 | static int dwarf2_ranges_read (unsigned, CORE_ADDR *, CORE_ADDR *, |
1484 | struct dwarf2_cu *, struct partial_symtab *); | |
1485 | ||
a14ed312 | 1486 | static int dwarf2_get_pc_bounds (struct die_info *, |
d85a05f0 DJ |
1487 | CORE_ADDR *, CORE_ADDR *, struct dwarf2_cu *, |
1488 | struct partial_symtab *); | |
c906108c | 1489 | |
fae299cd DC |
1490 | static void get_scope_pc_bounds (struct die_info *, |
1491 | CORE_ADDR *, CORE_ADDR *, | |
1492 | struct dwarf2_cu *); | |
1493 | ||
801e3a5b JB |
1494 | static void dwarf2_record_block_ranges (struct die_info *, struct block *, |
1495 | CORE_ADDR, struct dwarf2_cu *); | |
1496 | ||
a14ed312 | 1497 | static void dwarf2_add_field (struct field_info *, struct die_info *, |
e7c27a73 | 1498 | struct dwarf2_cu *); |
c906108c | 1499 | |
a14ed312 | 1500 | static void dwarf2_attach_fields_to_type (struct field_info *, |
e7c27a73 | 1501 | struct type *, struct dwarf2_cu *); |
c906108c | 1502 | |
a14ed312 | 1503 | static void dwarf2_add_member_fn (struct field_info *, |
e26fb1d7 | 1504 | struct die_info *, struct type *, |
e7c27a73 | 1505 | struct dwarf2_cu *); |
c906108c | 1506 | |
a14ed312 | 1507 | static void dwarf2_attach_fn_fields_to_type (struct field_info *, |
3e43a32a MS |
1508 | struct type *, |
1509 | struct dwarf2_cu *); | |
c906108c | 1510 | |
134d01f1 | 1511 | static void process_structure_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1512 | |
e7c27a73 | 1513 | static void read_common_block (struct die_info *, struct dwarf2_cu *); |
c906108c | 1514 | |
e7c27a73 | 1515 | static void read_namespace (struct die_info *die, struct dwarf2_cu *); |
d9fa45fe | 1516 | |
5d7cb8df JK |
1517 | static void read_module (struct die_info *die, struct dwarf2_cu *cu); |
1518 | ||
27aa8d6a SW |
1519 | static void read_import_statement (struct die_info *die, struct dwarf2_cu *); |
1520 | ||
f55ee35c JK |
1521 | static struct type *read_module_type (struct die_info *die, |
1522 | struct dwarf2_cu *cu); | |
1523 | ||
38d518c9 | 1524 | static const char *namespace_name (struct die_info *die, |
e142c38c | 1525 | int *is_anonymous, struct dwarf2_cu *); |
38d518c9 | 1526 | |
134d01f1 | 1527 | static void process_enumeration_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1528 | |
e7c27a73 | 1529 | static CORE_ADDR decode_locdesc (struct dwarf_block *, struct dwarf2_cu *); |
c906108c | 1530 | |
6e70227d | 1531 | static enum dwarf_array_dim_ordering read_array_order (struct die_info *, |
7ca2d3a3 DL |
1532 | struct dwarf2_cu *); |
1533 | ||
dee91e82 | 1534 | static struct die_info *read_die_and_children (const struct die_reader_specs *, |
93311388 | 1535 | gdb_byte *info_ptr, |
fe1b8b76 | 1536 | gdb_byte **new_info_ptr, |
639d11d3 DC |
1537 | struct die_info *parent); |
1538 | ||
dee91e82 | 1539 | static struct die_info *read_die_and_siblings (const struct die_reader_specs *, |
93311388 | 1540 | gdb_byte *info_ptr, |
fe1b8b76 | 1541 | gdb_byte **new_info_ptr, |
639d11d3 DC |
1542 | struct die_info *parent); |
1543 | ||
3019eac3 DE |
1544 | static gdb_byte *read_full_die_1 (const struct die_reader_specs *, |
1545 | struct die_info **, gdb_byte *, int *, int); | |
1546 | ||
dee91e82 DE |
1547 | static gdb_byte *read_full_die (const struct die_reader_specs *, |
1548 | struct die_info **, gdb_byte *, int *); | |
93311388 | 1549 | |
e7c27a73 | 1550 | static void process_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1551 | |
15d034d0 TT |
1552 | static const char *dwarf2_canonicalize_name (const char *, struct dwarf2_cu *, |
1553 | struct obstack *); | |
71c25dea | 1554 | |
15d034d0 | 1555 | static const char *dwarf2_name (struct die_info *die, struct dwarf2_cu *); |
9219021c | 1556 | |
15d034d0 | 1557 | static const char *dwarf2_full_name (const char *name, |
98bfdba5 PA |
1558 | struct die_info *die, |
1559 | struct dwarf2_cu *cu); | |
1560 | ||
ca69b9e6 DE |
1561 | static const char *dwarf2_physname (const char *name, struct die_info *die, |
1562 | struct dwarf2_cu *cu); | |
1563 | ||
e142c38c | 1564 | static struct die_info *dwarf2_extension (struct die_info *die, |
f2f0e013 | 1565 | struct dwarf2_cu **); |
9219021c | 1566 | |
f39c6ffd | 1567 | static const char *dwarf_tag_name (unsigned int); |
c906108c | 1568 | |
f39c6ffd | 1569 | static const char *dwarf_attr_name (unsigned int); |
c906108c | 1570 | |
f39c6ffd | 1571 | static const char *dwarf_form_name (unsigned int); |
c906108c | 1572 | |
a14ed312 | 1573 | static char *dwarf_bool_name (unsigned int); |
c906108c | 1574 | |
f39c6ffd | 1575 | static const char *dwarf_type_encoding_name (unsigned int); |
c906108c | 1576 | |
f9aca02d | 1577 | static struct die_info *sibling_die (struct die_info *); |
c906108c | 1578 | |
d97bc12b DE |
1579 | static void dump_die_shallow (struct ui_file *, int indent, struct die_info *); |
1580 | ||
1581 | static void dump_die_for_error (struct die_info *); | |
1582 | ||
1583 | static void dump_die_1 (struct ui_file *, int level, int max_level, | |
1584 | struct die_info *); | |
c906108c | 1585 | |
d97bc12b | 1586 | /*static*/ void dump_die (struct die_info *, int max_level); |
c906108c | 1587 | |
51545339 | 1588 | static void store_in_ref_table (struct die_info *, |
10b3939b | 1589 | struct dwarf2_cu *); |
c906108c | 1590 | |
93311388 DE |
1591 | static int is_ref_attr (struct attribute *); |
1592 | ||
b64f50a1 | 1593 | static sect_offset dwarf2_get_ref_die_offset (struct attribute *); |
c906108c | 1594 | |
43bbcdc2 | 1595 | static LONGEST dwarf2_get_attr_constant_value (struct attribute *, int); |
a02abb62 | 1596 | |
348e048f DE |
1597 | static struct die_info *follow_die_ref_or_sig (struct die_info *, |
1598 | struct attribute *, | |
1599 | struct dwarf2_cu **); | |
1600 | ||
10b3939b DJ |
1601 | static struct die_info *follow_die_ref (struct die_info *, |
1602 | struct attribute *, | |
f2f0e013 | 1603 | struct dwarf2_cu **); |
c906108c | 1604 | |
348e048f DE |
1605 | static struct die_info *follow_die_sig (struct die_info *, |
1606 | struct attribute *, | |
1607 | struct dwarf2_cu **); | |
1608 | ||
6c83ed52 TT |
1609 | static struct signatured_type *lookup_signatured_type_at_offset |
1610 | (struct objfile *objfile, | |
b64f50a1 | 1611 | struct dwarf2_section_info *section, sect_offset offset); |
6c83ed52 | 1612 | |
e5fe5e75 | 1613 | static void load_full_type_unit (struct dwarf2_per_cu_data *per_cu); |
348e048f | 1614 | |
52dc124a | 1615 | static void read_signatured_type (struct signatured_type *); |
348e048f | 1616 | |
f4dc4d17 | 1617 | static struct type_unit_group *get_type_unit_group |
094b34ac | 1618 | (struct dwarf2_cu *, struct attribute *); |
f4dc4d17 DE |
1619 | |
1620 | static void build_type_unit_groups (die_reader_func_ftype *, void *); | |
1621 | ||
c906108c SS |
1622 | /* memory allocation interface */ |
1623 | ||
7b5a2f43 | 1624 | static struct dwarf_block *dwarf_alloc_block (struct dwarf2_cu *); |
c906108c | 1625 | |
b60c80d6 | 1626 | static struct die_info *dwarf_alloc_die (struct dwarf2_cu *, int); |
c906108c | 1627 | |
09262596 | 1628 | static void dwarf_decode_macros (struct dwarf2_cu *, unsigned int, |
15d034d0 | 1629 | const char *, int); |
2e276125 | 1630 | |
8e19ed76 PS |
1631 | static int attr_form_is_block (struct attribute *); |
1632 | ||
3690dd37 JB |
1633 | static int attr_form_is_section_offset (struct attribute *); |
1634 | ||
1635 | static int attr_form_is_constant (struct attribute *); | |
1636 | ||
8cf6f0b1 TT |
1637 | static void fill_in_loclist_baton (struct dwarf2_cu *cu, |
1638 | struct dwarf2_loclist_baton *baton, | |
1639 | struct attribute *attr); | |
1640 | ||
93e7bd98 DJ |
1641 | static void dwarf2_symbol_mark_computed (struct attribute *attr, |
1642 | struct symbol *sym, | |
f1e6e072 TT |
1643 | struct dwarf2_cu *cu, |
1644 | int is_block); | |
4c2df51b | 1645 | |
dee91e82 DE |
1646 | static gdb_byte *skip_one_die (const struct die_reader_specs *reader, |
1647 | gdb_byte *info_ptr, | |
1648 | struct abbrev_info *abbrev); | |
4bb7a0a7 | 1649 | |
72bf9492 DJ |
1650 | static void free_stack_comp_unit (void *); |
1651 | ||
72bf9492 DJ |
1652 | static hashval_t partial_die_hash (const void *item); |
1653 | ||
1654 | static int partial_die_eq (const void *item_lhs, const void *item_rhs); | |
1655 | ||
ae038cb0 | 1656 | static struct dwarf2_per_cu_data *dwarf2_find_containing_comp_unit |
36586728 | 1657 | (sect_offset offset, unsigned int offset_in_dwz, struct objfile *objfile); |
ae038cb0 | 1658 | |
9816fde3 | 1659 | static void init_one_comp_unit (struct dwarf2_cu *cu, |
23745b47 | 1660 | struct dwarf2_per_cu_data *per_cu); |
9816fde3 JK |
1661 | |
1662 | static void prepare_one_comp_unit (struct dwarf2_cu *cu, | |
95554aad TT |
1663 | struct die_info *comp_unit_die, |
1664 | enum language pretend_language); | |
93311388 | 1665 | |
68dc6402 | 1666 | static void free_heap_comp_unit (void *); |
ae038cb0 DJ |
1667 | |
1668 | static void free_cached_comp_units (void *); | |
1669 | ||
1670 | static void age_cached_comp_units (void); | |
1671 | ||
dee91e82 | 1672 | static void free_one_cached_comp_unit (struct dwarf2_per_cu_data *); |
ae038cb0 | 1673 | |
f792889a DJ |
1674 | static struct type *set_die_type (struct die_info *, struct type *, |
1675 | struct dwarf2_cu *); | |
1c379e20 | 1676 | |
ae038cb0 DJ |
1677 | static void create_all_comp_units (struct objfile *); |
1678 | ||
0e50663e | 1679 | static int create_all_type_units (struct objfile *); |
1fd400ff | 1680 | |
95554aad TT |
1681 | static void load_full_comp_unit (struct dwarf2_per_cu_data *, |
1682 | enum language); | |
10b3939b | 1683 | |
95554aad TT |
1684 | static void process_full_comp_unit (struct dwarf2_per_cu_data *, |
1685 | enum language); | |
10b3939b | 1686 | |
f4dc4d17 DE |
1687 | static void process_full_type_unit (struct dwarf2_per_cu_data *, |
1688 | enum language); | |
1689 | ||
10b3939b DJ |
1690 | static void dwarf2_add_dependence (struct dwarf2_cu *, |
1691 | struct dwarf2_per_cu_data *); | |
1692 | ||
ae038cb0 DJ |
1693 | static void dwarf2_mark (struct dwarf2_cu *); |
1694 | ||
1695 | static void dwarf2_clear_marks (struct dwarf2_per_cu_data *); | |
1696 | ||
b64f50a1 | 1697 | static struct type *get_die_type_at_offset (sect_offset, |
673bfd45 DE |
1698 | struct dwarf2_per_cu_data *per_cu); |
1699 | ||
f792889a | 1700 | static struct type *get_die_type (struct die_info *die, struct dwarf2_cu *cu); |
72019c9c | 1701 | |
9291a0cd TT |
1702 | static void dwarf2_release_queue (void *dummy); |
1703 | ||
95554aad TT |
1704 | static void queue_comp_unit (struct dwarf2_per_cu_data *per_cu, |
1705 | enum language pretend_language); | |
1706 | ||
1707 | static int maybe_queue_comp_unit (struct dwarf2_cu *this_cu, | |
1708 | struct dwarf2_per_cu_data *per_cu, | |
1709 | enum language pretend_language); | |
9291a0cd | 1710 | |
a0f42c21 | 1711 | static void process_queue (void); |
9291a0cd TT |
1712 | |
1713 | static void find_file_and_directory (struct die_info *die, | |
1714 | struct dwarf2_cu *cu, | |
15d034d0 | 1715 | const char **name, const char **comp_dir); |
9291a0cd TT |
1716 | |
1717 | static char *file_full_name (int file, struct line_header *lh, | |
1718 | const char *comp_dir); | |
1719 | ||
36586728 TT |
1720 | static gdb_byte *read_and_check_comp_unit_head |
1721 | (struct comp_unit_head *header, | |
1722 | struct dwarf2_section_info *section, | |
1723 | struct dwarf2_section_info *abbrev_section, gdb_byte *info_ptr, | |
1724 | int is_debug_types_section); | |
1725 | ||
fd820528 | 1726 | static void init_cutu_and_read_dies |
f4dc4d17 DE |
1727 | (struct dwarf2_per_cu_data *this_cu, struct abbrev_table *abbrev_table, |
1728 | int use_existing_cu, int keep, | |
3019eac3 DE |
1729 | die_reader_func_ftype *die_reader_func, void *data); |
1730 | ||
dee91e82 DE |
1731 | static void init_cutu_and_read_dies_simple |
1732 | (struct dwarf2_per_cu_data *this_cu, | |
1733 | die_reader_func_ftype *die_reader_func, void *data); | |
9291a0cd | 1734 | |
673bfd45 | 1735 | static htab_t allocate_signatured_type_table (struct objfile *objfile); |
1fd400ff | 1736 | |
3019eac3 DE |
1737 | static htab_t allocate_dwo_unit_table (struct objfile *objfile); |
1738 | ||
1739 | static struct dwo_unit *lookup_dwo_comp_unit | |
a1855c1d | 1740 | (struct dwarf2_per_cu_data *, const char *, const char *, ULONGEST); |
3019eac3 DE |
1741 | |
1742 | static struct dwo_unit *lookup_dwo_type_unit | |
a1855c1d | 1743 | (struct signatured_type *, const char *, const char *); |
3019eac3 DE |
1744 | |
1745 | static void free_dwo_file_cleanup (void *); | |
1746 | ||
95554aad TT |
1747 | static void process_cu_includes (void); |
1748 | ||
1b80a9fa JK |
1749 | static void check_producer (struct dwarf2_cu *cu); |
1750 | ||
9291a0cd TT |
1751 | #if WORDS_BIGENDIAN |
1752 | ||
1753 | /* Convert VALUE between big- and little-endian. */ | |
1754 | static offset_type | |
1755 | byte_swap (offset_type value) | |
1756 | { | |
1757 | offset_type result; | |
1758 | ||
1759 | result = (value & 0xff) << 24; | |
1760 | result |= (value & 0xff00) << 8; | |
1761 | result |= (value & 0xff0000) >> 8; | |
1762 | result |= (value & 0xff000000) >> 24; | |
1763 | return result; | |
1764 | } | |
1765 | ||
1766 | #define MAYBE_SWAP(V) byte_swap (V) | |
1767 | ||
1768 | #else | |
1769 | #define MAYBE_SWAP(V) (V) | |
1770 | #endif /* WORDS_BIGENDIAN */ | |
1771 | ||
1772 | /* The suffix for an index file. */ | |
1773 | #define INDEX_SUFFIX ".gdb-index" | |
1774 | ||
c906108c | 1775 | /* Try to locate the sections we need for DWARF 2 debugging |
251d32d9 TG |
1776 | information and return true if we have enough to do something. |
1777 | NAMES points to the dwarf2 section names, or is NULL if the standard | |
1778 | ELF names are used. */ | |
c906108c SS |
1779 | |
1780 | int | |
251d32d9 TG |
1781 | dwarf2_has_info (struct objfile *objfile, |
1782 | const struct dwarf2_debug_sections *names) | |
c906108c | 1783 | { |
be391dca TT |
1784 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); |
1785 | if (!dwarf2_per_objfile) | |
1786 | { | |
1787 | /* Initialize per-objfile state. */ | |
1788 | struct dwarf2_per_objfile *data | |
1789 | = obstack_alloc (&objfile->objfile_obstack, sizeof (*data)); | |
9a619af0 | 1790 | |
be391dca TT |
1791 | memset (data, 0, sizeof (*data)); |
1792 | set_objfile_data (objfile, dwarf2_objfile_data_key, data); | |
1793 | dwarf2_per_objfile = data; | |
6502dd73 | 1794 | |
251d32d9 TG |
1795 | bfd_map_over_sections (objfile->obfd, dwarf2_locate_sections, |
1796 | (void *) names); | |
be391dca TT |
1797 | dwarf2_per_objfile->objfile = objfile; |
1798 | } | |
1799 | return (dwarf2_per_objfile->info.asection != NULL | |
1800 | && dwarf2_per_objfile->abbrev.asection != NULL); | |
c906108c SS |
1801 | } |
1802 | ||
251d32d9 TG |
1803 | /* When loading sections, we look either for uncompressed section or for |
1804 | compressed section names. */ | |
233a11ab CS |
1805 | |
1806 | static int | |
251d32d9 TG |
1807 | section_is_p (const char *section_name, |
1808 | const struct dwarf2_section_names *names) | |
233a11ab | 1809 | { |
251d32d9 TG |
1810 | if (names->normal != NULL |
1811 | && strcmp (section_name, names->normal) == 0) | |
1812 | return 1; | |
1813 | if (names->compressed != NULL | |
1814 | && strcmp (section_name, names->compressed) == 0) | |
1815 | return 1; | |
1816 | return 0; | |
233a11ab CS |
1817 | } |
1818 | ||
c906108c SS |
1819 | /* This function is mapped across the sections and remembers the |
1820 | offset and size of each of the debugging sections we are interested | |
1821 | in. */ | |
1822 | ||
1823 | static void | |
251d32d9 | 1824 | dwarf2_locate_sections (bfd *abfd, asection *sectp, void *vnames) |
c906108c | 1825 | { |
251d32d9 | 1826 | const struct dwarf2_debug_sections *names; |
dc7650b8 | 1827 | flagword aflag = bfd_get_section_flags (abfd, sectp); |
251d32d9 TG |
1828 | |
1829 | if (vnames == NULL) | |
1830 | names = &dwarf2_elf_names; | |
1831 | else | |
1832 | names = (const struct dwarf2_debug_sections *) vnames; | |
1833 | ||
dc7650b8 JK |
1834 | if ((aflag & SEC_HAS_CONTENTS) == 0) |
1835 | { | |
1836 | } | |
1837 | else if (section_is_p (sectp->name, &names->info)) | |
c906108c | 1838 | { |
dce234bc PP |
1839 | dwarf2_per_objfile->info.asection = sectp; |
1840 | dwarf2_per_objfile->info.size = bfd_get_section_size (sectp); | |
c906108c | 1841 | } |
251d32d9 | 1842 | else if (section_is_p (sectp->name, &names->abbrev)) |
c906108c | 1843 | { |
dce234bc PP |
1844 | dwarf2_per_objfile->abbrev.asection = sectp; |
1845 | dwarf2_per_objfile->abbrev.size = bfd_get_section_size (sectp); | |
c906108c | 1846 | } |
251d32d9 | 1847 | else if (section_is_p (sectp->name, &names->line)) |
c906108c | 1848 | { |
dce234bc PP |
1849 | dwarf2_per_objfile->line.asection = sectp; |
1850 | dwarf2_per_objfile->line.size = bfd_get_section_size (sectp); | |
c906108c | 1851 | } |
251d32d9 | 1852 | else if (section_is_p (sectp->name, &names->loc)) |
c906108c | 1853 | { |
dce234bc PP |
1854 | dwarf2_per_objfile->loc.asection = sectp; |
1855 | dwarf2_per_objfile->loc.size = bfd_get_section_size (sectp); | |
c906108c | 1856 | } |
251d32d9 | 1857 | else if (section_is_p (sectp->name, &names->macinfo)) |
c906108c | 1858 | { |
dce234bc PP |
1859 | dwarf2_per_objfile->macinfo.asection = sectp; |
1860 | dwarf2_per_objfile->macinfo.size = bfd_get_section_size (sectp); | |
c906108c | 1861 | } |
cf2c3c16 TT |
1862 | else if (section_is_p (sectp->name, &names->macro)) |
1863 | { | |
1864 | dwarf2_per_objfile->macro.asection = sectp; | |
1865 | dwarf2_per_objfile->macro.size = bfd_get_section_size (sectp); | |
1866 | } | |
251d32d9 | 1867 | else if (section_is_p (sectp->name, &names->str)) |
c906108c | 1868 | { |
dce234bc PP |
1869 | dwarf2_per_objfile->str.asection = sectp; |
1870 | dwarf2_per_objfile->str.size = bfd_get_section_size (sectp); | |
c906108c | 1871 | } |
3019eac3 DE |
1872 | else if (section_is_p (sectp->name, &names->addr)) |
1873 | { | |
1874 | dwarf2_per_objfile->addr.asection = sectp; | |
1875 | dwarf2_per_objfile->addr.size = bfd_get_section_size (sectp); | |
1876 | } | |
251d32d9 | 1877 | else if (section_is_p (sectp->name, &names->frame)) |
b6af0555 | 1878 | { |
dce234bc PP |
1879 | dwarf2_per_objfile->frame.asection = sectp; |
1880 | dwarf2_per_objfile->frame.size = bfd_get_section_size (sectp); | |
b6af0555 | 1881 | } |
251d32d9 | 1882 | else if (section_is_p (sectp->name, &names->eh_frame)) |
b6af0555 | 1883 | { |
dc7650b8 JK |
1884 | dwarf2_per_objfile->eh_frame.asection = sectp; |
1885 | dwarf2_per_objfile->eh_frame.size = bfd_get_section_size (sectp); | |
b6af0555 | 1886 | } |
251d32d9 | 1887 | else if (section_is_p (sectp->name, &names->ranges)) |
af34e669 | 1888 | { |
dce234bc PP |
1889 | dwarf2_per_objfile->ranges.asection = sectp; |
1890 | dwarf2_per_objfile->ranges.size = bfd_get_section_size (sectp); | |
af34e669 | 1891 | } |
251d32d9 | 1892 | else if (section_is_p (sectp->name, &names->types)) |
348e048f | 1893 | { |
8b70b953 TT |
1894 | struct dwarf2_section_info type_section; |
1895 | ||
1896 | memset (&type_section, 0, sizeof (type_section)); | |
1897 | type_section.asection = sectp; | |
1898 | type_section.size = bfd_get_section_size (sectp); | |
1899 | ||
1900 | VEC_safe_push (dwarf2_section_info_def, dwarf2_per_objfile->types, | |
1901 | &type_section); | |
348e048f | 1902 | } |
251d32d9 | 1903 | else if (section_is_p (sectp->name, &names->gdb_index)) |
9291a0cd TT |
1904 | { |
1905 | dwarf2_per_objfile->gdb_index.asection = sectp; | |
1906 | dwarf2_per_objfile->gdb_index.size = bfd_get_section_size (sectp); | |
1907 | } | |
dce234bc | 1908 | |
72dca2f5 FR |
1909 | if ((bfd_get_section_flags (abfd, sectp) & SEC_LOAD) |
1910 | && bfd_section_vma (abfd, sectp) == 0) | |
1911 | dwarf2_per_objfile->has_section_at_zero = 1; | |
c906108c SS |
1912 | } |
1913 | ||
fceca515 DE |
1914 | /* A helper function that decides whether a section is empty, |
1915 | or not present. */ | |
9e0ac564 TT |
1916 | |
1917 | static int | |
1918 | dwarf2_section_empty_p (struct dwarf2_section_info *info) | |
1919 | { | |
1920 | return info->asection == NULL || info->size == 0; | |
1921 | } | |
1922 | ||
3019eac3 DE |
1923 | /* Read the contents of the section INFO. |
1924 | OBJFILE is the main object file, but not necessarily the file where | |
1925 | the section comes from. E.g., for DWO files INFO->asection->owner | |
1926 | is the bfd of the DWO file. | |
dce234bc | 1927 | If the section is compressed, uncompress it before returning. */ |
c906108c | 1928 | |
dce234bc PP |
1929 | static void |
1930 | dwarf2_read_section (struct objfile *objfile, struct dwarf2_section_info *info) | |
c906108c | 1931 | { |
dce234bc | 1932 | asection *sectp = info->asection; |
3019eac3 | 1933 | bfd *abfd; |
dce234bc PP |
1934 | gdb_byte *buf, *retbuf; |
1935 | unsigned char header[4]; | |
c906108c | 1936 | |
be391dca TT |
1937 | if (info->readin) |
1938 | return; | |
dce234bc | 1939 | info->buffer = NULL; |
be391dca | 1940 | info->readin = 1; |
188dd5d6 | 1941 | |
9e0ac564 | 1942 | if (dwarf2_section_empty_p (info)) |
dce234bc | 1943 | return; |
c906108c | 1944 | |
3019eac3 DE |
1945 | abfd = sectp->owner; |
1946 | ||
4bf44c1c TT |
1947 | /* If the section has relocations, we must read it ourselves. |
1948 | Otherwise we attach it to the BFD. */ | |
1949 | if ((sectp->flags & SEC_RELOC) == 0) | |
dce234bc | 1950 | { |
4bf44c1c | 1951 | const gdb_byte *bytes = gdb_bfd_map_section (sectp, &info->size); |
dce234bc | 1952 | |
4bf44c1c TT |
1953 | /* We have to cast away const here for historical reasons. |
1954 | Fixing dwarf2read to be const-correct would be quite nice. */ | |
1955 | info->buffer = (gdb_byte *) bytes; | |
1956 | return; | |
dce234bc | 1957 | } |
dce234bc | 1958 | |
4bf44c1c TT |
1959 | buf = obstack_alloc (&objfile->objfile_obstack, info->size); |
1960 | info->buffer = buf; | |
dce234bc PP |
1961 | |
1962 | /* When debugging .o files, we may need to apply relocations; see | |
1963 | http://sourceware.org/ml/gdb-patches/2002-04/msg00136.html . | |
1964 | We never compress sections in .o files, so we only need to | |
1965 | try this when the section is not compressed. */ | |
ac8035ab | 1966 | retbuf = symfile_relocate_debug_section (objfile, sectp, buf); |
dce234bc PP |
1967 | if (retbuf != NULL) |
1968 | { | |
1969 | info->buffer = retbuf; | |
1970 | return; | |
1971 | } | |
1972 | ||
1973 | if (bfd_seek (abfd, sectp->filepos, SEEK_SET) != 0 | |
1974 | || bfd_bread (buf, info->size, abfd) != info->size) | |
1975 | error (_("Dwarf Error: Can't read DWARF data from '%s'"), | |
1976 | bfd_get_filename (abfd)); | |
1977 | } | |
1978 | ||
9e0ac564 TT |
1979 | /* A helper function that returns the size of a section in a safe way. |
1980 | If you are positive that the section has been read before using the | |
1981 | size, then it is safe to refer to the dwarf2_section_info object's | |
1982 | "size" field directly. In other cases, you must call this | |
1983 | function, because for compressed sections the size field is not set | |
1984 | correctly until the section has been read. */ | |
1985 | ||
1986 | static bfd_size_type | |
1987 | dwarf2_section_size (struct objfile *objfile, | |
1988 | struct dwarf2_section_info *info) | |
1989 | { | |
1990 | if (!info->readin) | |
1991 | dwarf2_read_section (objfile, info); | |
1992 | return info->size; | |
1993 | } | |
1994 | ||
dce234bc | 1995 | /* Fill in SECTP, BUFP and SIZEP with section info, given OBJFILE and |
0963b4bd | 1996 | SECTION_NAME. */ |
af34e669 | 1997 | |
dce234bc | 1998 | void |
3017a003 TG |
1999 | dwarf2_get_section_info (struct objfile *objfile, |
2000 | enum dwarf2_section_enum sect, | |
dce234bc PP |
2001 | asection **sectp, gdb_byte **bufp, |
2002 | bfd_size_type *sizep) | |
2003 | { | |
2004 | struct dwarf2_per_objfile *data | |
2005 | = objfile_data (objfile, dwarf2_objfile_data_key); | |
2006 | struct dwarf2_section_info *info; | |
a3b2a86b TT |
2007 | |
2008 | /* We may see an objfile without any DWARF, in which case we just | |
2009 | return nothing. */ | |
2010 | if (data == NULL) | |
2011 | { | |
2012 | *sectp = NULL; | |
2013 | *bufp = NULL; | |
2014 | *sizep = 0; | |
2015 | return; | |
2016 | } | |
3017a003 TG |
2017 | switch (sect) |
2018 | { | |
2019 | case DWARF2_DEBUG_FRAME: | |
2020 | info = &data->frame; | |
2021 | break; | |
2022 | case DWARF2_EH_FRAME: | |
2023 | info = &data->eh_frame; | |
2024 | break; | |
2025 | default: | |
2026 | gdb_assert_not_reached ("unexpected section"); | |
2027 | } | |
dce234bc | 2028 | |
9e0ac564 | 2029 | dwarf2_read_section (objfile, info); |
dce234bc PP |
2030 | |
2031 | *sectp = info->asection; | |
2032 | *bufp = info->buffer; | |
2033 | *sizep = info->size; | |
2034 | } | |
2035 | ||
36586728 TT |
2036 | /* A helper function to find the sections for a .dwz file. */ |
2037 | ||
2038 | static void | |
2039 | locate_dwz_sections (bfd *abfd, asection *sectp, void *arg) | |
2040 | { | |
2041 | struct dwz_file *dwz_file = arg; | |
2042 | ||
2043 | /* Note that we only support the standard ELF names, because .dwz | |
2044 | is ELF-only (at the time of writing). */ | |
2045 | if (section_is_p (sectp->name, &dwarf2_elf_names.abbrev)) | |
2046 | { | |
2047 | dwz_file->abbrev.asection = sectp; | |
2048 | dwz_file->abbrev.size = bfd_get_section_size (sectp); | |
2049 | } | |
2050 | else if (section_is_p (sectp->name, &dwarf2_elf_names.info)) | |
2051 | { | |
2052 | dwz_file->info.asection = sectp; | |
2053 | dwz_file->info.size = bfd_get_section_size (sectp); | |
2054 | } | |
2055 | else if (section_is_p (sectp->name, &dwarf2_elf_names.str)) | |
2056 | { | |
2057 | dwz_file->str.asection = sectp; | |
2058 | dwz_file->str.size = bfd_get_section_size (sectp); | |
2059 | } | |
2060 | else if (section_is_p (sectp->name, &dwarf2_elf_names.line)) | |
2061 | { | |
2062 | dwz_file->line.asection = sectp; | |
2063 | dwz_file->line.size = bfd_get_section_size (sectp); | |
2064 | } | |
2065 | else if (section_is_p (sectp->name, &dwarf2_elf_names.macro)) | |
2066 | { | |
2067 | dwz_file->macro.asection = sectp; | |
2068 | dwz_file->macro.size = bfd_get_section_size (sectp); | |
2069 | } | |
2ec9a5e0 TT |
2070 | else if (section_is_p (sectp->name, &dwarf2_elf_names.gdb_index)) |
2071 | { | |
2072 | dwz_file->gdb_index.asection = sectp; | |
2073 | dwz_file->gdb_index.size = bfd_get_section_size (sectp); | |
2074 | } | |
36586728 TT |
2075 | } |
2076 | ||
2077 | /* Open the separate '.dwz' debug file, if needed. Error if the file | |
2078 | cannot be found. */ | |
2079 | ||
2080 | static struct dwz_file * | |
2081 | dwarf2_get_dwz_file (void) | |
2082 | { | |
2083 | bfd *abfd, *dwz_bfd; | |
2084 | asection *section; | |
2085 | gdb_byte *data; | |
2086 | struct cleanup *cleanup; | |
2087 | const char *filename; | |
2088 | struct dwz_file *result; | |
2089 | ||
2090 | if (dwarf2_per_objfile->dwz_file != NULL) | |
2091 | return dwarf2_per_objfile->dwz_file; | |
2092 | ||
2093 | abfd = dwarf2_per_objfile->objfile->obfd; | |
2094 | section = bfd_get_section_by_name (abfd, ".gnu_debugaltlink"); | |
2095 | if (section == NULL) | |
2096 | error (_("could not find '.gnu_debugaltlink' section")); | |
2097 | if (!bfd_malloc_and_get_section (abfd, section, &data)) | |
2098 | error (_("could not read '.gnu_debugaltlink' section: %s"), | |
2099 | bfd_errmsg (bfd_get_error ())); | |
2100 | cleanup = make_cleanup (xfree, data); | |
2101 | ||
2102 | filename = data; | |
2103 | if (!IS_ABSOLUTE_PATH (filename)) | |
2104 | { | |
2105 | char *abs = gdb_realpath (dwarf2_per_objfile->objfile->name); | |
2106 | char *rel; | |
2107 | ||
2108 | make_cleanup (xfree, abs); | |
2109 | abs = ldirname (abs); | |
2110 | make_cleanup (xfree, abs); | |
2111 | ||
2112 | rel = concat (abs, SLASH_STRING, filename, (char *) NULL); | |
2113 | make_cleanup (xfree, rel); | |
2114 | filename = rel; | |
2115 | } | |
2116 | ||
2117 | /* The format is just a NUL-terminated file name, followed by the | |
2118 | build-id. For now, though, we ignore the build-id. */ | |
2119 | dwz_bfd = gdb_bfd_open (filename, gnutarget, -1); | |
2120 | if (dwz_bfd == NULL) | |
2121 | error (_("could not read '%s': %s"), filename, | |
2122 | bfd_errmsg (bfd_get_error ())); | |
2123 | ||
2124 | if (!bfd_check_format (dwz_bfd, bfd_object)) | |
2125 | { | |
2126 | gdb_bfd_unref (dwz_bfd); | |
2127 | error (_("file '%s' was not usable: %s"), filename, | |
2128 | bfd_errmsg (bfd_get_error ())); | |
2129 | } | |
2130 | ||
2131 | result = OBSTACK_ZALLOC (&dwarf2_per_objfile->objfile->objfile_obstack, | |
2132 | struct dwz_file); | |
2133 | result->dwz_bfd = dwz_bfd; | |
2134 | ||
2135 | bfd_map_over_sections (dwz_bfd, locate_dwz_sections, result); | |
2136 | ||
2137 | do_cleanups (cleanup); | |
2138 | ||
8d2cc612 | 2139 | dwarf2_per_objfile->dwz_file = result; |
36586728 TT |
2140 | return result; |
2141 | } | |
9291a0cd | 2142 | \f |
7b9f3c50 DE |
2143 | /* DWARF quick_symbols_functions support. */ |
2144 | ||
2145 | /* TUs can share .debug_line entries, and there can be a lot more TUs than | |
2146 | unique line tables, so we maintain a separate table of all .debug_line | |
2147 | derived entries to support the sharing. | |
2148 | All the quick functions need is the list of file names. We discard the | |
2149 | line_header when we're done and don't need to record it here. */ | |
2150 | struct quick_file_names | |
2151 | { | |
094b34ac DE |
2152 | /* The data used to construct the hash key. */ |
2153 | struct stmt_list_hash hash; | |
7b9f3c50 DE |
2154 | |
2155 | /* The number of entries in file_names, real_names. */ | |
2156 | unsigned int num_file_names; | |
2157 | ||
2158 | /* The file names from the line table, after being run through | |
2159 | file_full_name. */ | |
2160 | const char **file_names; | |
2161 | ||
2162 | /* The file names from the line table after being run through | |
2163 | gdb_realpath. These are computed lazily. */ | |
2164 | const char **real_names; | |
2165 | }; | |
2166 | ||
2167 | /* When using the index (and thus not using psymtabs), each CU has an | |
2168 | object of this type. This is used to hold information needed by | |
2169 | the various "quick" methods. */ | |
2170 | struct dwarf2_per_cu_quick_data | |
2171 | { | |
2172 | /* The file table. This can be NULL if there was no file table | |
2173 | or it's currently not read in. | |
2174 | NOTE: This points into dwarf2_per_objfile->quick_file_names_table. */ | |
2175 | struct quick_file_names *file_names; | |
2176 | ||
2177 | /* The corresponding symbol table. This is NULL if symbols for this | |
2178 | CU have not yet been read. */ | |
2179 | struct symtab *symtab; | |
2180 | ||
2181 | /* A temporary mark bit used when iterating over all CUs in | |
2182 | expand_symtabs_matching. */ | |
2183 | unsigned int mark : 1; | |
2184 | ||
2185 | /* True if we've tried to read the file table and found there isn't one. | |
2186 | There will be no point in trying to read it again next time. */ | |
2187 | unsigned int no_file_data : 1; | |
2188 | }; | |
2189 | ||
094b34ac DE |
2190 | /* Utility hash function for a stmt_list_hash. */ |
2191 | ||
2192 | static hashval_t | |
2193 | hash_stmt_list_entry (const struct stmt_list_hash *stmt_list_hash) | |
2194 | { | |
2195 | hashval_t v = 0; | |
2196 | ||
2197 | if (stmt_list_hash->dwo_unit != NULL) | |
2198 | v += (uintptr_t) stmt_list_hash->dwo_unit->dwo_file; | |
2199 | v += stmt_list_hash->line_offset.sect_off; | |
2200 | return v; | |
2201 | } | |
2202 | ||
2203 | /* Utility equality function for a stmt_list_hash. */ | |
2204 | ||
2205 | static int | |
2206 | eq_stmt_list_entry (const struct stmt_list_hash *lhs, | |
2207 | const struct stmt_list_hash *rhs) | |
2208 | { | |
2209 | if ((lhs->dwo_unit != NULL) != (rhs->dwo_unit != NULL)) | |
2210 | return 0; | |
2211 | if (lhs->dwo_unit != NULL | |
2212 | && lhs->dwo_unit->dwo_file != rhs->dwo_unit->dwo_file) | |
2213 | return 0; | |
2214 | ||
2215 | return lhs->line_offset.sect_off == rhs->line_offset.sect_off; | |
2216 | } | |
2217 | ||
7b9f3c50 DE |
2218 | /* Hash function for a quick_file_names. */ |
2219 | ||
2220 | static hashval_t | |
2221 | hash_file_name_entry (const void *e) | |
2222 | { | |
2223 | const struct quick_file_names *file_data = e; | |
2224 | ||
094b34ac | 2225 | return hash_stmt_list_entry (&file_data->hash); |
7b9f3c50 DE |
2226 | } |
2227 | ||
2228 | /* Equality function for a quick_file_names. */ | |
2229 | ||
2230 | static int | |
2231 | eq_file_name_entry (const void *a, const void *b) | |
2232 | { | |
2233 | const struct quick_file_names *ea = a; | |
2234 | const struct quick_file_names *eb = b; | |
2235 | ||
094b34ac | 2236 | return eq_stmt_list_entry (&ea->hash, &eb->hash); |
7b9f3c50 DE |
2237 | } |
2238 | ||
2239 | /* Delete function for a quick_file_names. */ | |
2240 | ||
2241 | static void | |
2242 | delete_file_name_entry (void *e) | |
2243 | { | |
2244 | struct quick_file_names *file_data = e; | |
2245 | int i; | |
2246 | ||
2247 | for (i = 0; i < file_data->num_file_names; ++i) | |
2248 | { | |
2249 | xfree ((void*) file_data->file_names[i]); | |
2250 | if (file_data->real_names) | |
2251 | xfree ((void*) file_data->real_names[i]); | |
2252 | } | |
2253 | ||
2254 | /* The space for the struct itself lives on objfile_obstack, | |
2255 | so we don't free it here. */ | |
2256 | } | |
2257 | ||
2258 | /* Create a quick_file_names hash table. */ | |
2259 | ||
2260 | static htab_t | |
2261 | create_quick_file_names_table (unsigned int nr_initial_entries) | |
2262 | { | |
2263 | return htab_create_alloc (nr_initial_entries, | |
2264 | hash_file_name_entry, eq_file_name_entry, | |
2265 | delete_file_name_entry, xcalloc, xfree); | |
2266 | } | |
9291a0cd | 2267 | |
918dd910 JK |
2268 | /* Read in PER_CU->CU. This function is unrelated to symtabs, symtab would |
2269 | have to be created afterwards. You should call age_cached_comp_units after | |
2270 | processing PER_CU->CU. dw2_setup must have been already called. */ | |
2271 | ||
2272 | static void | |
2273 | load_cu (struct dwarf2_per_cu_data *per_cu) | |
2274 | { | |
3019eac3 | 2275 | if (per_cu->is_debug_types) |
e5fe5e75 | 2276 | load_full_type_unit (per_cu); |
918dd910 | 2277 | else |
95554aad | 2278 | load_full_comp_unit (per_cu, language_minimal); |
918dd910 | 2279 | |
918dd910 | 2280 | gdb_assert (per_cu->cu != NULL); |
2dc860c0 DE |
2281 | |
2282 | dwarf2_find_base_address (per_cu->cu->dies, per_cu->cu); | |
918dd910 JK |
2283 | } |
2284 | ||
a0f42c21 | 2285 | /* Read in the symbols for PER_CU. */ |
2fdf6df6 | 2286 | |
9291a0cd | 2287 | static void |
a0f42c21 | 2288 | dw2_do_instantiate_symtab (struct dwarf2_per_cu_data *per_cu) |
9291a0cd TT |
2289 | { |
2290 | struct cleanup *back_to; | |
2291 | ||
f4dc4d17 DE |
2292 | /* Skip type_unit_groups, reading the type units they contain |
2293 | is handled elsewhere. */ | |
2294 | if (IS_TYPE_UNIT_GROUP (per_cu)) | |
2295 | return; | |
2296 | ||
9291a0cd TT |
2297 | back_to = make_cleanup (dwarf2_release_queue, NULL); |
2298 | ||
95554aad TT |
2299 | if (dwarf2_per_objfile->using_index |
2300 | ? per_cu->v.quick->symtab == NULL | |
2301 | : (per_cu->v.psymtab == NULL || !per_cu->v.psymtab->readin)) | |
2302 | { | |
2303 | queue_comp_unit (per_cu, language_minimal); | |
2304 | load_cu (per_cu); | |
2305 | } | |
9291a0cd | 2306 | |
a0f42c21 | 2307 | process_queue (); |
9291a0cd TT |
2308 | |
2309 | /* Age the cache, releasing compilation units that have not | |
2310 | been used recently. */ | |
2311 | age_cached_comp_units (); | |
2312 | ||
2313 | do_cleanups (back_to); | |
2314 | } | |
2315 | ||
2316 | /* Ensure that the symbols for PER_CU have been read in. OBJFILE is | |
2317 | the objfile from which this CU came. Returns the resulting symbol | |
2318 | table. */ | |
2fdf6df6 | 2319 | |
9291a0cd | 2320 | static struct symtab * |
a0f42c21 | 2321 | dw2_instantiate_symtab (struct dwarf2_per_cu_data *per_cu) |
9291a0cd | 2322 | { |
95554aad | 2323 | gdb_assert (dwarf2_per_objfile->using_index); |
9291a0cd TT |
2324 | if (!per_cu->v.quick->symtab) |
2325 | { | |
2326 | struct cleanup *back_to = make_cleanup (free_cached_comp_units, NULL); | |
2327 | increment_reading_symtab (); | |
a0f42c21 | 2328 | dw2_do_instantiate_symtab (per_cu); |
95554aad | 2329 | process_cu_includes (); |
9291a0cd TT |
2330 | do_cleanups (back_to); |
2331 | } | |
2332 | return per_cu->v.quick->symtab; | |
2333 | } | |
2334 | ||
f4dc4d17 DE |
2335 | /* Return the CU given its index. |
2336 | ||
2337 | This is intended for loops like: | |
2338 | ||
2339 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units | |
2340 | + dwarf2_per_objfile->n_type_units); ++i) | |
2341 | { | |
2342 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); | |
2343 | ||
2344 | ...; | |
2345 | } | |
2346 | */ | |
2fdf6df6 | 2347 | |
1fd400ff TT |
2348 | static struct dwarf2_per_cu_data * |
2349 | dw2_get_cu (int index) | |
2350 | { | |
2351 | if (index >= dwarf2_per_objfile->n_comp_units) | |
2352 | { | |
f4dc4d17 | 2353 | index -= dwarf2_per_objfile->n_comp_units; |
094b34ac DE |
2354 | gdb_assert (index < dwarf2_per_objfile->n_type_units); |
2355 | return &dwarf2_per_objfile->all_type_units[index]->per_cu; | |
f4dc4d17 DE |
2356 | } |
2357 | ||
2358 | return dwarf2_per_objfile->all_comp_units[index]; | |
2359 | } | |
2360 | ||
2361 | /* Return the primary CU given its index. | |
2362 | The difference between this function and dw2_get_cu is in the handling | |
2363 | of type units (TUs). Here we return the type_unit_group object. | |
2364 | ||
2365 | This is intended for loops like: | |
2366 | ||
2367 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units | |
2368 | + dwarf2_per_objfile->n_type_unit_groups); ++i) | |
2369 | { | |
2370 | struct dwarf2_per_cu_data *per_cu = dw2_get_primary_cu (i); | |
2371 | ||
2372 | ...; | |
2373 | } | |
2374 | */ | |
2375 | ||
2376 | static struct dwarf2_per_cu_data * | |
2377 | dw2_get_primary_cu (int index) | |
2378 | { | |
2379 | if (index >= dwarf2_per_objfile->n_comp_units) | |
2380 | { | |
1fd400ff | 2381 | index -= dwarf2_per_objfile->n_comp_units; |
094b34ac DE |
2382 | gdb_assert (index < dwarf2_per_objfile->n_type_unit_groups); |
2383 | return &dwarf2_per_objfile->all_type_unit_groups[index]->per_cu; | |
1fd400ff | 2384 | } |
f4dc4d17 | 2385 | |
1fd400ff TT |
2386 | return dwarf2_per_objfile->all_comp_units[index]; |
2387 | } | |
2388 | ||
2ec9a5e0 TT |
2389 | /* A helper for create_cus_from_index that handles a given list of |
2390 | CUs. */ | |
2fdf6df6 | 2391 | |
74a0d9f6 | 2392 | static void |
2ec9a5e0 TT |
2393 | create_cus_from_index_list (struct objfile *objfile, |
2394 | const gdb_byte *cu_list, offset_type n_elements, | |
2395 | struct dwarf2_section_info *section, | |
2396 | int is_dwz, | |
2397 | int base_offset) | |
9291a0cd TT |
2398 | { |
2399 | offset_type i; | |
9291a0cd | 2400 | |
2ec9a5e0 | 2401 | for (i = 0; i < n_elements; i += 2) |
9291a0cd TT |
2402 | { |
2403 | struct dwarf2_per_cu_data *the_cu; | |
2404 | ULONGEST offset, length; | |
2405 | ||
74a0d9f6 JK |
2406 | gdb_static_assert (sizeof (ULONGEST) >= 8); |
2407 | offset = extract_unsigned_integer (cu_list, 8, BFD_ENDIAN_LITTLE); | |
2408 | length = extract_unsigned_integer (cu_list + 8, 8, BFD_ENDIAN_LITTLE); | |
9291a0cd TT |
2409 | cu_list += 2 * 8; |
2410 | ||
2411 | the_cu = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
2412 | struct dwarf2_per_cu_data); | |
b64f50a1 | 2413 | the_cu->offset.sect_off = offset; |
9291a0cd TT |
2414 | the_cu->length = length; |
2415 | the_cu->objfile = objfile; | |
8a0459fd | 2416 | the_cu->section = section; |
9291a0cd TT |
2417 | the_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
2418 | struct dwarf2_per_cu_quick_data); | |
2ec9a5e0 TT |
2419 | the_cu->is_dwz = is_dwz; |
2420 | dwarf2_per_objfile->all_comp_units[base_offset + i / 2] = the_cu; | |
9291a0cd | 2421 | } |
9291a0cd TT |
2422 | } |
2423 | ||
2ec9a5e0 | 2424 | /* Read the CU list from the mapped index, and use it to create all |
74a0d9f6 | 2425 | the CU objects for this objfile. */ |
2ec9a5e0 | 2426 | |
74a0d9f6 | 2427 | static void |
2ec9a5e0 TT |
2428 | create_cus_from_index (struct objfile *objfile, |
2429 | const gdb_byte *cu_list, offset_type cu_list_elements, | |
2430 | const gdb_byte *dwz_list, offset_type dwz_elements) | |
2431 | { | |
2432 | struct dwz_file *dwz; | |
2433 | ||
2434 | dwarf2_per_objfile->n_comp_units = (cu_list_elements + dwz_elements) / 2; | |
2435 | dwarf2_per_objfile->all_comp_units | |
2436 | = obstack_alloc (&objfile->objfile_obstack, | |
2437 | dwarf2_per_objfile->n_comp_units | |
2438 | * sizeof (struct dwarf2_per_cu_data *)); | |
2439 | ||
74a0d9f6 JK |
2440 | create_cus_from_index_list (objfile, cu_list, cu_list_elements, |
2441 | &dwarf2_per_objfile->info, 0, 0); | |
2ec9a5e0 TT |
2442 | |
2443 | if (dwz_elements == 0) | |
74a0d9f6 | 2444 | return; |
2ec9a5e0 TT |
2445 | |
2446 | dwz = dwarf2_get_dwz_file (); | |
74a0d9f6 JK |
2447 | create_cus_from_index_list (objfile, dwz_list, dwz_elements, &dwz->info, 1, |
2448 | cu_list_elements / 2); | |
2ec9a5e0 TT |
2449 | } |
2450 | ||
1fd400ff | 2451 | /* Create the signatured type hash table from the index. */ |
673bfd45 | 2452 | |
74a0d9f6 | 2453 | static void |
673bfd45 | 2454 | create_signatured_type_table_from_index (struct objfile *objfile, |
8b70b953 | 2455 | struct dwarf2_section_info *section, |
673bfd45 DE |
2456 | const gdb_byte *bytes, |
2457 | offset_type elements) | |
1fd400ff TT |
2458 | { |
2459 | offset_type i; | |
673bfd45 | 2460 | htab_t sig_types_hash; |
1fd400ff | 2461 | |
d467dd73 DE |
2462 | dwarf2_per_objfile->n_type_units = elements / 3; |
2463 | dwarf2_per_objfile->all_type_units | |
1fd400ff | 2464 | = obstack_alloc (&objfile->objfile_obstack, |
d467dd73 | 2465 | dwarf2_per_objfile->n_type_units |
b4dd5633 | 2466 | * sizeof (struct signatured_type *)); |
1fd400ff | 2467 | |
673bfd45 | 2468 | sig_types_hash = allocate_signatured_type_table (objfile); |
1fd400ff TT |
2469 | |
2470 | for (i = 0; i < elements; i += 3) | |
2471 | { | |
52dc124a DE |
2472 | struct signatured_type *sig_type; |
2473 | ULONGEST offset, type_offset_in_tu, signature; | |
1fd400ff TT |
2474 | void **slot; |
2475 | ||
74a0d9f6 JK |
2476 | gdb_static_assert (sizeof (ULONGEST) >= 8); |
2477 | offset = extract_unsigned_integer (bytes, 8, BFD_ENDIAN_LITTLE); | |
2478 | type_offset_in_tu = extract_unsigned_integer (bytes + 8, 8, | |
2479 | BFD_ENDIAN_LITTLE); | |
1fd400ff TT |
2480 | signature = extract_unsigned_integer (bytes + 16, 8, BFD_ENDIAN_LITTLE); |
2481 | bytes += 3 * 8; | |
2482 | ||
52dc124a | 2483 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
1fd400ff | 2484 | struct signatured_type); |
52dc124a | 2485 | sig_type->signature = signature; |
3019eac3 DE |
2486 | sig_type->type_offset_in_tu.cu_off = type_offset_in_tu; |
2487 | sig_type->per_cu.is_debug_types = 1; | |
8a0459fd | 2488 | sig_type->per_cu.section = section; |
52dc124a DE |
2489 | sig_type->per_cu.offset.sect_off = offset; |
2490 | sig_type->per_cu.objfile = objfile; | |
2491 | sig_type->per_cu.v.quick | |
1fd400ff TT |
2492 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
2493 | struct dwarf2_per_cu_quick_data); | |
2494 | ||
52dc124a DE |
2495 | slot = htab_find_slot (sig_types_hash, sig_type, INSERT); |
2496 | *slot = sig_type; | |
1fd400ff | 2497 | |
b4dd5633 | 2498 | dwarf2_per_objfile->all_type_units[i / 3] = sig_type; |
1fd400ff TT |
2499 | } |
2500 | ||
673bfd45 | 2501 | dwarf2_per_objfile->signatured_types = sig_types_hash; |
1fd400ff TT |
2502 | } |
2503 | ||
9291a0cd TT |
2504 | /* Read the address map data from the mapped index, and use it to |
2505 | populate the objfile's psymtabs_addrmap. */ | |
2fdf6df6 | 2506 | |
9291a0cd TT |
2507 | static void |
2508 | create_addrmap_from_index (struct objfile *objfile, struct mapped_index *index) | |
2509 | { | |
2510 | const gdb_byte *iter, *end; | |
2511 | struct obstack temp_obstack; | |
2512 | struct addrmap *mutable_map; | |
2513 | struct cleanup *cleanup; | |
2514 | CORE_ADDR baseaddr; | |
2515 | ||
2516 | obstack_init (&temp_obstack); | |
2517 | cleanup = make_cleanup_obstack_free (&temp_obstack); | |
2518 | mutable_map = addrmap_create_mutable (&temp_obstack); | |
2519 | ||
2520 | iter = index->address_table; | |
2521 | end = iter + index->address_table_size; | |
2522 | ||
2523 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
2524 | ||
2525 | while (iter < end) | |
2526 | { | |
2527 | ULONGEST hi, lo, cu_index; | |
2528 | lo = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
2529 | iter += 8; | |
2530 | hi = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
2531 | iter += 8; | |
2532 | cu_index = extract_unsigned_integer (iter, 4, BFD_ENDIAN_LITTLE); | |
2533 | iter += 4; | |
f652bce2 DE |
2534 | |
2535 | if (cu_index < dwarf2_per_objfile->n_comp_units) | |
2536 | { | |
2537 | addrmap_set_empty (mutable_map, lo + baseaddr, hi + baseaddr - 1, | |
2538 | dw2_get_cu (cu_index)); | |
2539 | } | |
2540 | else | |
2541 | { | |
2542 | complaint (&symfile_complaints, | |
2543 | _(".gdb_index address table has invalid CU number %u"), | |
2544 | (unsigned) cu_index); | |
2545 | } | |
9291a0cd TT |
2546 | } |
2547 | ||
2548 | objfile->psymtabs_addrmap = addrmap_create_fixed (mutable_map, | |
2549 | &objfile->objfile_obstack); | |
2550 | do_cleanups (cleanup); | |
2551 | } | |
2552 | ||
59d7bcaf JK |
2553 | /* The hash function for strings in the mapped index. This is the same as |
2554 | SYMBOL_HASH_NEXT, but we keep a separate copy to maintain control over the | |
2555 | implementation. This is necessary because the hash function is tied to the | |
2556 | format of the mapped index file. The hash values do not have to match with | |
559a7a62 JK |
2557 | SYMBOL_HASH_NEXT. |
2558 | ||
2559 | Use INT_MAX for INDEX_VERSION if you generate the current index format. */ | |
2fdf6df6 | 2560 | |
9291a0cd | 2561 | static hashval_t |
559a7a62 | 2562 | mapped_index_string_hash (int index_version, const void *p) |
9291a0cd TT |
2563 | { |
2564 | const unsigned char *str = (const unsigned char *) p; | |
2565 | hashval_t r = 0; | |
2566 | unsigned char c; | |
2567 | ||
2568 | while ((c = *str++) != 0) | |
559a7a62 JK |
2569 | { |
2570 | if (index_version >= 5) | |
2571 | c = tolower (c); | |
2572 | r = r * 67 + c - 113; | |
2573 | } | |
9291a0cd TT |
2574 | |
2575 | return r; | |
2576 | } | |
2577 | ||
2578 | /* Find a slot in the mapped index INDEX for the object named NAME. | |
2579 | If NAME is found, set *VEC_OUT to point to the CU vector in the | |
2580 | constant pool and return 1. If NAME cannot be found, return 0. */ | |
2fdf6df6 | 2581 | |
9291a0cd TT |
2582 | static int |
2583 | find_slot_in_mapped_hash (struct mapped_index *index, const char *name, | |
2584 | offset_type **vec_out) | |
2585 | { | |
0cf03b49 JK |
2586 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
2587 | offset_type hash; | |
9291a0cd | 2588 | offset_type slot, step; |
559a7a62 | 2589 | int (*cmp) (const char *, const char *); |
9291a0cd | 2590 | |
0cf03b49 JK |
2591 | if (current_language->la_language == language_cplus |
2592 | || current_language->la_language == language_java | |
2593 | || current_language->la_language == language_fortran) | |
2594 | { | |
2595 | /* NAME is already canonical. Drop any qualifiers as .gdb_index does | |
2596 | not contain any. */ | |
2597 | const char *paren = strchr (name, '('); | |
2598 | ||
2599 | if (paren) | |
2600 | { | |
2601 | char *dup; | |
2602 | ||
2603 | dup = xmalloc (paren - name + 1); | |
2604 | memcpy (dup, name, paren - name); | |
2605 | dup[paren - name] = 0; | |
2606 | ||
2607 | make_cleanup (xfree, dup); | |
2608 | name = dup; | |
2609 | } | |
2610 | } | |
2611 | ||
559a7a62 | 2612 | /* Index version 4 did not support case insensitive searches. But the |
feea76c2 | 2613 | indices for case insensitive languages are built in lowercase, therefore |
559a7a62 JK |
2614 | simulate our NAME being searched is also lowercased. */ |
2615 | hash = mapped_index_string_hash ((index->version == 4 | |
2616 | && case_sensitivity == case_sensitive_off | |
2617 | ? 5 : index->version), | |
2618 | name); | |
2619 | ||
3876f04e DE |
2620 | slot = hash & (index->symbol_table_slots - 1); |
2621 | step = ((hash * 17) & (index->symbol_table_slots - 1)) | 1; | |
559a7a62 | 2622 | cmp = (case_sensitivity == case_sensitive_on ? strcmp : strcasecmp); |
9291a0cd TT |
2623 | |
2624 | for (;;) | |
2625 | { | |
2626 | /* Convert a slot number to an offset into the table. */ | |
2627 | offset_type i = 2 * slot; | |
2628 | const char *str; | |
3876f04e | 2629 | if (index->symbol_table[i] == 0 && index->symbol_table[i + 1] == 0) |
0cf03b49 JK |
2630 | { |
2631 | do_cleanups (back_to); | |
2632 | return 0; | |
2633 | } | |
9291a0cd | 2634 | |
3876f04e | 2635 | str = index->constant_pool + MAYBE_SWAP (index->symbol_table[i]); |
559a7a62 | 2636 | if (!cmp (name, str)) |
9291a0cd TT |
2637 | { |
2638 | *vec_out = (offset_type *) (index->constant_pool | |
3876f04e | 2639 | + MAYBE_SWAP (index->symbol_table[i + 1])); |
0cf03b49 | 2640 | do_cleanups (back_to); |
9291a0cd TT |
2641 | return 1; |
2642 | } | |
2643 | ||
3876f04e | 2644 | slot = (slot + step) & (index->symbol_table_slots - 1); |
9291a0cd TT |
2645 | } |
2646 | } | |
2647 | ||
2ec9a5e0 TT |
2648 | /* A helper function that reads the .gdb_index from SECTION and fills |
2649 | in MAP. FILENAME is the name of the file containing the section; | |
2650 | it is used for error reporting. DEPRECATED_OK is nonzero if it is | |
2651 | ok to use deprecated sections. | |
2652 | ||
2653 | CU_LIST, CU_LIST_ELEMENTS, TYPES_LIST, and TYPES_LIST_ELEMENTS are | |
2654 | out parameters that are filled in with information about the CU and | |
2655 | TU lists in the section. | |
2656 | ||
2657 | Returns 1 if all went well, 0 otherwise. */ | |
2fdf6df6 | 2658 | |
9291a0cd | 2659 | static int |
2ec9a5e0 TT |
2660 | read_index_from_section (struct objfile *objfile, |
2661 | const char *filename, | |
2662 | int deprecated_ok, | |
2663 | struct dwarf2_section_info *section, | |
2664 | struct mapped_index *map, | |
2665 | const gdb_byte **cu_list, | |
2666 | offset_type *cu_list_elements, | |
2667 | const gdb_byte **types_list, | |
2668 | offset_type *types_list_elements) | |
9291a0cd | 2669 | { |
9291a0cd | 2670 | char *addr; |
2ec9a5e0 | 2671 | offset_type version; |
b3b272e1 | 2672 | offset_type *metadata; |
1fd400ff | 2673 | int i; |
9291a0cd | 2674 | |
2ec9a5e0 | 2675 | if (dwarf2_section_empty_p (section)) |
9291a0cd | 2676 | return 0; |
82430852 JK |
2677 | |
2678 | /* Older elfutils strip versions could keep the section in the main | |
2679 | executable while splitting it for the separate debug info file. */ | |
2ec9a5e0 | 2680 | if ((bfd_get_file_flags (section->asection) & SEC_HAS_CONTENTS) == 0) |
82430852 JK |
2681 | return 0; |
2682 | ||
2ec9a5e0 | 2683 | dwarf2_read_section (objfile, section); |
9291a0cd | 2684 | |
2ec9a5e0 | 2685 | addr = section->buffer; |
9291a0cd | 2686 | /* Version check. */ |
1fd400ff | 2687 | version = MAYBE_SWAP (*(offset_type *) addr); |
987d643c | 2688 | /* Versions earlier than 3 emitted every copy of a psymbol. This |
a6e293d1 | 2689 | causes the index to behave very poorly for certain requests. Version 3 |
831adc1f | 2690 | contained incomplete addrmap. So, it seems better to just ignore such |
481860b3 | 2691 | indices. */ |
831adc1f | 2692 | if (version < 4) |
481860b3 GB |
2693 | { |
2694 | static int warning_printed = 0; | |
2695 | if (!warning_printed) | |
2696 | { | |
2697 | warning (_("Skipping obsolete .gdb_index section in %s."), | |
2ec9a5e0 | 2698 | filename); |
481860b3 GB |
2699 | warning_printed = 1; |
2700 | } | |
2701 | return 0; | |
2702 | } | |
2703 | /* Index version 4 uses a different hash function than index version | |
2704 | 5 and later. | |
2705 | ||
2706 | Versions earlier than 6 did not emit psymbols for inlined | |
2707 | functions. Using these files will cause GDB not to be able to | |
2708 | set breakpoints on inlined functions by name, so we ignore these | |
e615022a DE |
2709 | indices unless the user has done |
2710 | "set use-deprecated-index-sections on". */ | |
2ec9a5e0 | 2711 | if (version < 6 && !deprecated_ok) |
481860b3 GB |
2712 | { |
2713 | static int warning_printed = 0; | |
2714 | if (!warning_printed) | |
2715 | { | |
e615022a DE |
2716 | warning (_("\ |
2717 | Skipping deprecated .gdb_index section in %s.\n\ | |
2718 | Do \"set use-deprecated-index-sections on\" before the file is read\n\ | |
2719 | to use the section anyway."), | |
2ec9a5e0 | 2720 | filename); |
481860b3 GB |
2721 | warning_printed = 1; |
2722 | } | |
2723 | return 0; | |
2724 | } | |
796a7ff8 DE |
2725 | /* Version 7 indices generated by gold refer to the CU for a symbol instead |
2726 | of the TU (for symbols coming from TUs). It's just a performance bug, and | |
2727 | we can't distinguish gdb-generated indices from gold-generated ones, so | |
2728 | nothing to do here. */ | |
2729 | ||
481860b3 | 2730 | /* Indexes with higher version than the one supported by GDB may be no |
594e8718 | 2731 | longer backward compatible. */ |
796a7ff8 | 2732 | if (version > 8) |
594e8718 | 2733 | return 0; |
9291a0cd | 2734 | |
559a7a62 | 2735 | map->version = version; |
2ec9a5e0 | 2736 | map->total_size = section->size; |
9291a0cd TT |
2737 | |
2738 | metadata = (offset_type *) (addr + sizeof (offset_type)); | |
1fd400ff TT |
2739 | |
2740 | i = 0; | |
2ec9a5e0 TT |
2741 | *cu_list = addr + MAYBE_SWAP (metadata[i]); |
2742 | *cu_list_elements = ((MAYBE_SWAP (metadata[i + 1]) - MAYBE_SWAP (metadata[i])) | |
2743 | / 8); | |
1fd400ff TT |
2744 | ++i; |
2745 | ||
2ec9a5e0 TT |
2746 | *types_list = addr + MAYBE_SWAP (metadata[i]); |
2747 | *types_list_elements = ((MAYBE_SWAP (metadata[i + 1]) | |
2748 | - MAYBE_SWAP (metadata[i])) | |
2749 | / 8); | |
987d643c | 2750 | ++i; |
1fd400ff TT |
2751 | |
2752 | map->address_table = addr + MAYBE_SWAP (metadata[i]); | |
2753 | map->address_table_size = (MAYBE_SWAP (metadata[i + 1]) | |
2754 | - MAYBE_SWAP (metadata[i])); | |
2755 | ++i; | |
2756 | ||
3876f04e DE |
2757 | map->symbol_table = (offset_type *) (addr + MAYBE_SWAP (metadata[i])); |
2758 | map->symbol_table_slots = ((MAYBE_SWAP (metadata[i + 1]) | |
2759 | - MAYBE_SWAP (metadata[i])) | |
2760 | / (2 * sizeof (offset_type))); | |
1fd400ff | 2761 | ++i; |
9291a0cd | 2762 | |
1fd400ff TT |
2763 | map->constant_pool = addr + MAYBE_SWAP (metadata[i]); |
2764 | ||
2ec9a5e0 TT |
2765 | return 1; |
2766 | } | |
2767 | ||
2768 | ||
2769 | /* Read the index file. If everything went ok, initialize the "quick" | |
2770 | elements of all the CUs and return 1. Otherwise, return 0. */ | |
2771 | ||
2772 | static int | |
2773 | dwarf2_read_index (struct objfile *objfile) | |
2774 | { | |
2775 | struct mapped_index local_map, *map; | |
2776 | const gdb_byte *cu_list, *types_list, *dwz_list = NULL; | |
2777 | offset_type cu_list_elements, types_list_elements, dwz_list_elements = 0; | |
2778 | ||
2779 | if (!read_index_from_section (objfile, objfile->name, | |
2780 | use_deprecated_index_sections, | |
2781 | &dwarf2_per_objfile->gdb_index, &local_map, | |
2782 | &cu_list, &cu_list_elements, | |
2783 | &types_list, &types_list_elements)) | |
2784 | return 0; | |
2785 | ||
0fefef59 | 2786 | /* Don't use the index if it's empty. */ |
2ec9a5e0 | 2787 | if (local_map.symbol_table_slots == 0) |
0fefef59 DE |
2788 | return 0; |
2789 | ||
2ec9a5e0 TT |
2790 | /* If there is a .dwz file, read it so we can get its CU list as |
2791 | well. */ | |
2792 | if (bfd_get_section_by_name (objfile->obfd, ".gnu_debugaltlink") != NULL) | |
2793 | { | |
2794 | struct dwz_file *dwz = dwarf2_get_dwz_file (); | |
2795 | struct mapped_index dwz_map; | |
2796 | const gdb_byte *dwz_types_ignore; | |
2797 | offset_type dwz_types_elements_ignore; | |
2798 | ||
2799 | if (!read_index_from_section (objfile, bfd_get_filename (dwz->dwz_bfd), | |
2800 | 1, | |
2801 | &dwz->gdb_index, &dwz_map, | |
2802 | &dwz_list, &dwz_list_elements, | |
2803 | &dwz_types_ignore, | |
2804 | &dwz_types_elements_ignore)) | |
2805 | { | |
2806 | warning (_("could not read '.gdb_index' section from %s; skipping"), | |
2807 | bfd_get_filename (dwz->dwz_bfd)); | |
2808 | return 0; | |
2809 | } | |
2810 | } | |
2811 | ||
74a0d9f6 JK |
2812 | create_cus_from_index (objfile, cu_list, cu_list_elements, dwz_list, |
2813 | dwz_list_elements); | |
1fd400ff | 2814 | |
8b70b953 TT |
2815 | if (types_list_elements) |
2816 | { | |
2817 | struct dwarf2_section_info *section; | |
2818 | ||
2819 | /* We can only handle a single .debug_types when we have an | |
2820 | index. */ | |
2821 | if (VEC_length (dwarf2_section_info_def, dwarf2_per_objfile->types) != 1) | |
2822 | return 0; | |
2823 | ||
2824 | section = VEC_index (dwarf2_section_info_def, | |
2825 | dwarf2_per_objfile->types, 0); | |
2826 | ||
74a0d9f6 JK |
2827 | create_signatured_type_table_from_index (objfile, section, types_list, |
2828 | types_list_elements); | |
8b70b953 | 2829 | } |
9291a0cd | 2830 | |
2ec9a5e0 TT |
2831 | create_addrmap_from_index (objfile, &local_map); |
2832 | ||
2833 | map = obstack_alloc (&objfile->objfile_obstack, sizeof (struct mapped_index)); | |
2834 | *map = local_map; | |
9291a0cd TT |
2835 | |
2836 | dwarf2_per_objfile->index_table = map; | |
2837 | dwarf2_per_objfile->using_index = 1; | |
7b9f3c50 DE |
2838 | dwarf2_per_objfile->quick_file_names_table = |
2839 | create_quick_file_names_table (dwarf2_per_objfile->n_comp_units); | |
9291a0cd TT |
2840 | |
2841 | return 1; | |
2842 | } | |
2843 | ||
2844 | /* A helper for the "quick" functions which sets the global | |
2845 | dwarf2_per_objfile according to OBJFILE. */ | |
2fdf6df6 | 2846 | |
9291a0cd TT |
2847 | static void |
2848 | dw2_setup (struct objfile *objfile) | |
2849 | { | |
2850 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); | |
2851 | gdb_assert (dwarf2_per_objfile); | |
2852 | } | |
2853 | ||
dee91e82 | 2854 | /* die_reader_func for dw2_get_file_names. */ |
2fdf6df6 | 2855 | |
dee91e82 DE |
2856 | static void |
2857 | dw2_get_file_names_reader (const struct die_reader_specs *reader, | |
2858 | gdb_byte *info_ptr, | |
2859 | struct die_info *comp_unit_die, | |
2860 | int has_children, | |
2861 | void *data) | |
9291a0cd | 2862 | { |
dee91e82 DE |
2863 | struct dwarf2_cu *cu = reader->cu; |
2864 | struct dwarf2_per_cu_data *this_cu = cu->per_cu; | |
2865 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
094b34ac | 2866 | struct dwarf2_per_cu_data *lh_cu; |
7b9f3c50 | 2867 | struct line_header *lh; |
9291a0cd | 2868 | struct attribute *attr; |
dee91e82 | 2869 | int i; |
15d034d0 | 2870 | const char *name, *comp_dir; |
7b9f3c50 DE |
2871 | void **slot; |
2872 | struct quick_file_names *qfn; | |
2873 | unsigned int line_offset; | |
9291a0cd | 2874 | |
07261596 TT |
2875 | /* Our callers never want to match partial units -- instead they |
2876 | will match the enclosing full CU. */ | |
2877 | if (comp_unit_die->tag == DW_TAG_partial_unit) | |
2878 | { | |
2879 | this_cu->v.quick->no_file_data = 1; | |
2880 | return; | |
2881 | } | |
2882 | ||
094b34ac DE |
2883 | /* If we're reading the line header for TUs, store it in the "per_cu" |
2884 | for tu_group. */ | |
2885 | if (this_cu->is_debug_types) | |
2886 | { | |
2887 | struct type_unit_group *tu_group = data; | |
2888 | ||
2889 | gdb_assert (tu_group != NULL); | |
2890 | lh_cu = &tu_group->per_cu; | |
2891 | } | |
2892 | else | |
2893 | lh_cu = this_cu; | |
2894 | ||
7b9f3c50 DE |
2895 | lh = NULL; |
2896 | slot = NULL; | |
2897 | line_offset = 0; | |
dee91e82 DE |
2898 | |
2899 | attr = dwarf2_attr (comp_unit_die, DW_AT_stmt_list, cu); | |
9291a0cd TT |
2900 | if (attr) |
2901 | { | |
7b9f3c50 DE |
2902 | struct quick_file_names find_entry; |
2903 | ||
2904 | line_offset = DW_UNSND (attr); | |
2905 | ||
2906 | /* We may have already read in this line header (TU line header sharing). | |
2907 | If we have we're done. */ | |
094b34ac DE |
2908 | find_entry.hash.dwo_unit = cu->dwo_unit; |
2909 | find_entry.hash.line_offset.sect_off = line_offset; | |
7b9f3c50 DE |
2910 | slot = htab_find_slot (dwarf2_per_objfile->quick_file_names_table, |
2911 | &find_entry, INSERT); | |
2912 | if (*slot != NULL) | |
2913 | { | |
094b34ac | 2914 | lh_cu->v.quick->file_names = *slot; |
dee91e82 | 2915 | return; |
7b9f3c50 DE |
2916 | } |
2917 | ||
3019eac3 | 2918 | lh = dwarf_decode_line_header (line_offset, cu); |
9291a0cd TT |
2919 | } |
2920 | if (lh == NULL) | |
2921 | { | |
094b34ac | 2922 | lh_cu->v.quick->no_file_data = 1; |
dee91e82 | 2923 | return; |
9291a0cd TT |
2924 | } |
2925 | ||
7b9f3c50 | 2926 | qfn = obstack_alloc (&objfile->objfile_obstack, sizeof (*qfn)); |
094b34ac DE |
2927 | qfn->hash.dwo_unit = cu->dwo_unit; |
2928 | qfn->hash.line_offset.sect_off = line_offset; | |
7b9f3c50 DE |
2929 | gdb_assert (slot != NULL); |
2930 | *slot = qfn; | |
9291a0cd | 2931 | |
dee91e82 | 2932 | find_file_and_directory (comp_unit_die, cu, &name, &comp_dir); |
9291a0cd | 2933 | |
7b9f3c50 DE |
2934 | qfn->num_file_names = lh->num_file_names; |
2935 | qfn->file_names = obstack_alloc (&objfile->objfile_obstack, | |
2936 | lh->num_file_names * sizeof (char *)); | |
9291a0cd | 2937 | for (i = 0; i < lh->num_file_names; ++i) |
7b9f3c50 DE |
2938 | qfn->file_names[i] = file_full_name (i + 1, lh, comp_dir); |
2939 | qfn->real_names = NULL; | |
9291a0cd | 2940 | |
7b9f3c50 | 2941 | free_line_header (lh); |
7b9f3c50 | 2942 | |
094b34ac | 2943 | lh_cu->v.quick->file_names = qfn; |
dee91e82 DE |
2944 | } |
2945 | ||
2946 | /* A helper for the "quick" functions which attempts to read the line | |
2947 | table for THIS_CU. */ | |
2948 | ||
2949 | static struct quick_file_names * | |
e4a48d9d | 2950 | dw2_get_file_names (struct dwarf2_per_cu_data *this_cu) |
dee91e82 | 2951 | { |
f4dc4d17 DE |
2952 | /* For TUs this should only be called on the parent group. */ |
2953 | if (this_cu->is_debug_types) | |
2954 | gdb_assert (IS_TYPE_UNIT_GROUP (this_cu)); | |
2955 | ||
dee91e82 DE |
2956 | if (this_cu->v.quick->file_names != NULL) |
2957 | return this_cu->v.quick->file_names; | |
2958 | /* If we know there is no line data, no point in looking again. */ | |
2959 | if (this_cu->v.quick->no_file_data) | |
2960 | return NULL; | |
2961 | ||
3019eac3 DE |
2962 | /* If DWO files are in use, we can still find the DW_AT_stmt_list attribute |
2963 | in the stub for CUs, there's is no need to lookup the DWO file. | |
2964 | However, that's not the case for TUs where DW_AT_stmt_list lives in the | |
2965 | DWO file. */ | |
2966 | if (this_cu->is_debug_types) | |
094b34ac | 2967 | { |
796a7ff8 | 2968 | struct type_unit_group *tu_group = this_cu->type_unit_group; |
094b34ac DE |
2969 | |
2970 | init_cutu_and_read_dies (tu_group->t.first_tu, NULL, 0, 0, | |
2971 | dw2_get_file_names_reader, tu_group); | |
2972 | } | |
3019eac3 DE |
2973 | else |
2974 | init_cutu_and_read_dies_simple (this_cu, dw2_get_file_names_reader, NULL); | |
dee91e82 DE |
2975 | |
2976 | if (this_cu->v.quick->no_file_data) | |
2977 | return NULL; | |
2978 | return this_cu->v.quick->file_names; | |
9291a0cd TT |
2979 | } |
2980 | ||
2981 | /* A helper for the "quick" functions which computes and caches the | |
7b9f3c50 | 2982 | real path for a given file name from the line table. */ |
2fdf6df6 | 2983 | |
9291a0cd | 2984 | static const char * |
7b9f3c50 DE |
2985 | dw2_get_real_path (struct objfile *objfile, |
2986 | struct quick_file_names *qfn, int index) | |
9291a0cd | 2987 | { |
7b9f3c50 DE |
2988 | if (qfn->real_names == NULL) |
2989 | qfn->real_names = OBSTACK_CALLOC (&objfile->objfile_obstack, | |
2990 | qfn->num_file_names, sizeof (char *)); | |
9291a0cd | 2991 | |
7b9f3c50 DE |
2992 | if (qfn->real_names[index] == NULL) |
2993 | qfn->real_names[index] = gdb_realpath (qfn->file_names[index]); | |
9291a0cd | 2994 | |
7b9f3c50 | 2995 | return qfn->real_names[index]; |
9291a0cd TT |
2996 | } |
2997 | ||
2998 | static struct symtab * | |
2999 | dw2_find_last_source_symtab (struct objfile *objfile) | |
3000 | { | |
3001 | int index; | |
ae2de4f8 | 3002 | |
9291a0cd TT |
3003 | dw2_setup (objfile); |
3004 | index = dwarf2_per_objfile->n_comp_units - 1; | |
a0f42c21 | 3005 | return dw2_instantiate_symtab (dw2_get_cu (index)); |
9291a0cd TT |
3006 | } |
3007 | ||
7b9f3c50 DE |
3008 | /* Traversal function for dw2_forget_cached_source_info. */ |
3009 | ||
3010 | static int | |
3011 | dw2_free_cached_file_names (void **slot, void *info) | |
9291a0cd | 3012 | { |
7b9f3c50 | 3013 | struct quick_file_names *file_data = (struct quick_file_names *) *slot; |
9291a0cd | 3014 | |
7b9f3c50 | 3015 | if (file_data->real_names) |
9291a0cd | 3016 | { |
7b9f3c50 | 3017 | int i; |
9291a0cd | 3018 | |
7b9f3c50 | 3019 | for (i = 0; i < file_data->num_file_names; ++i) |
9291a0cd | 3020 | { |
7b9f3c50 DE |
3021 | xfree ((void*) file_data->real_names[i]); |
3022 | file_data->real_names[i] = NULL; | |
9291a0cd TT |
3023 | } |
3024 | } | |
7b9f3c50 DE |
3025 | |
3026 | return 1; | |
3027 | } | |
3028 | ||
3029 | static void | |
3030 | dw2_forget_cached_source_info (struct objfile *objfile) | |
3031 | { | |
3032 | dw2_setup (objfile); | |
3033 | ||
3034 | htab_traverse_noresize (dwarf2_per_objfile->quick_file_names_table, | |
3035 | dw2_free_cached_file_names, NULL); | |
9291a0cd TT |
3036 | } |
3037 | ||
f8eba3c6 TT |
3038 | /* Helper function for dw2_map_symtabs_matching_filename that expands |
3039 | the symtabs and calls the iterator. */ | |
3040 | ||
3041 | static int | |
3042 | dw2_map_expand_apply (struct objfile *objfile, | |
3043 | struct dwarf2_per_cu_data *per_cu, | |
f5b95b50 | 3044 | const char *name, const char *real_path, |
f8eba3c6 TT |
3045 | int (*callback) (struct symtab *, void *), |
3046 | void *data) | |
3047 | { | |
3048 | struct symtab *last_made = objfile->symtabs; | |
3049 | ||
3050 | /* Don't visit already-expanded CUs. */ | |
3051 | if (per_cu->v.quick->symtab) | |
3052 | return 0; | |
3053 | ||
3054 | /* This may expand more than one symtab, and we want to iterate over | |
3055 | all of them. */ | |
a0f42c21 | 3056 | dw2_instantiate_symtab (per_cu); |
f8eba3c6 | 3057 | |
f5b95b50 | 3058 | return iterate_over_some_symtabs (name, real_path, callback, data, |
f8eba3c6 TT |
3059 | objfile->symtabs, last_made); |
3060 | } | |
3061 | ||
3062 | /* Implementation of the map_symtabs_matching_filename method. */ | |
3063 | ||
9291a0cd | 3064 | static int |
f8eba3c6 | 3065 | dw2_map_symtabs_matching_filename (struct objfile *objfile, const char *name, |
f5b95b50 | 3066 | const char *real_path, |
f8eba3c6 TT |
3067 | int (*callback) (struct symtab *, void *), |
3068 | void *data) | |
9291a0cd TT |
3069 | { |
3070 | int i; | |
c011a4f4 | 3071 | const char *name_basename = lbasename (name); |
9291a0cd TT |
3072 | |
3073 | dw2_setup (objfile); | |
ae2de4f8 | 3074 | |
848e3e78 DE |
3075 | /* The rule is CUs specify all the files, including those used by |
3076 | any TU, so there's no need to scan TUs here. */ | |
f4dc4d17 | 3077 | |
848e3e78 | 3078 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
9291a0cd TT |
3079 | { |
3080 | int j; | |
f4dc4d17 | 3081 | struct dwarf2_per_cu_data *per_cu = dw2_get_primary_cu (i); |
7b9f3c50 | 3082 | struct quick_file_names *file_data; |
9291a0cd | 3083 | |
3d7bb9d9 | 3084 | /* We only need to look at symtabs not already expanded. */ |
e254ef6a | 3085 | if (per_cu->v.quick->symtab) |
9291a0cd TT |
3086 | continue; |
3087 | ||
e4a48d9d | 3088 | file_data = dw2_get_file_names (per_cu); |
7b9f3c50 | 3089 | if (file_data == NULL) |
9291a0cd TT |
3090 | continue; |
3091 | ||
7b9f3c50 | 3092 | for (j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 3093 | { |
7b9f3c50 | 3094 | const char *this_name = file_data->file_names[j]; |
da235a7c | 3095 | const char *this_real_name; |
9291a0cd | 3096 | |
af529f8f | 3097 | if (compare_filenames_for_search (this_name, name)) |
9291a0cd | 3098 | { |
f5b95b50 | 3099 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
f8eba3c6 TT |
3100 | callback, data)) |
3101 | return 1; | |
288e77a7 | 3102 | continue; |
4aac40c8 | 3103 | } |
9291a0cd | 3104 | |
c011a4f4 DE |
3105 | /* Before we invoke realpath, which can get expensive when many |
3106 | files are involved, do a quick comparison of the basenames. */ | |
3107 | if (! basenames_may_differ | |
3108 | && FILENAME_CMP (lbasename (this_name), name_basename) != 0) | |
3109 | continue; | |
3110 | ||
da235a7c JK |
3111 | this_real_name = dw2_get_real_path (objfile, file_data, j); |
3112 | if (compare_filenames_for_search (this_real_name, name)) | |
9291a0cd | 3113 | { |
da235a7c JK |
3114 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
3115 | callback, data)) | |
3116 | return 1; | |
288e77a7 | 3117 | continue; |
da235a7c | 3118 | } |
9291a0cd | 3119 | |
da235a7c JK |
3120 | if (real_path != NULL) |
3121 | { | |
af529f8f JK |
3122 | gdb_assert (IS_ABSOLUTE_PATH (real_path)); |
3123 | gdb_assert (IS_ABSOLUTE_PATH (name)); | |
7b9f3c50 | 3124 | if (this_real_name != NULL |
af529f8f | 3125 | && FILENAME_CMP (real_path, this_real_name) == 0) |
9291a0cd | 3126 | { |
f5b95b50 | 3127 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
f8eba3c6 TT |
3128 | callback, data)) |
3129 | return 1; | |
288e77a7 | 3130 | continue; |
9291a0cd TT |
3131 | } |
3132 | } | |
3133 | } | |
3134 | } | |
3135 | ||
9291a0cd TT |
3136 | return 0; |
3137 | } | |
3138 | ||
da51c347 DE |
3139 | /* Struct used to manage iterating over all CUs looking for a symbol. */ |
3140 | ||
3141 | struct dw2_symtab_iterator | |
9291a0cd | 3142 | { |
da51c347 DE |
3143 | /* The internalized form of .gdb_index. */ |
3144 | struct mapped_index *index; | |
3145 | /* If non-zero, only look for symbols that match BLOCK_INDEX. */ | |
3146 | int want_specific_block; | |
3147 | /* One of GLOBAL_BLOCK or STATIC_BLOCK. | |
3148 | Unused if !WANT_SPECIFIC_BLOCK. */ | |
3149 | int block_index; | |
3150 | /* The kind of symbol we're looking for. */ | |
3151 | domain_enum domain; | |
3152 | /* The list of CUs from the index entry of the symbol, | |
3153 | or NULL if not found. */ | |
3154 | offset_type *vec; | |
3155 | /* The next element in VEC to look at. */ | |
3156 | int next; | |
3157 | /* The number of elements in VEC, or zero if there is no match. */ | |
3158 | int length; | |
3159 | }; | |
9291a0cd | 3160 | |
da51c347 DE |
3161 | /* Initialize the index symtab iterator ITER. |
3162 | If WANT_SPECIFIC_BLOCK is non-zero, only look for symbols | |
3163 | in block BLOCK_INDEX. Otherwise BLOCK_INDEX is ignored. */ | |
2fdf6df6 | 3164 | |
9291a0cd | 3165 | static void |
da51c347 DE |
3166 | dw2_symtab_iter_init (struct dw2_symtab_iterator *iter, |
3167 | struct mapped_index *index, | |
3168 | int want_specific_block, | |
3169 | int block_index, | |
3170 | domain_enum domain, | |
3171 | const char *name) | |
3172 | { | |
3173 | iter->index = index; | |
3174 | iter->want_specific_block = want_specific_block; | |
3175 | iter->block_index = block_index; | |
3176 | iter->domain = domain; | |
3177 | iter->next = 0; | |
3178 | ||
3179 | if (find_slot_in_mapped_hash (index, name, &iter->vec)) | |
3180 | iter->length = MAYBE_SWAP (*iter->vec); | |
3181 | else | |
3182 | { | |
3183 | iter->vec = NULL; | |
3184 | iter->length = 0; | |
3185 | } | |
3186 | } | |
3187 | ||
3188 | /* Return the next matching CU or NULL if there are no more. */ | |
3189 | ||
3190 | static struct dwarf2_per_cu_data * | |
3191 | dw2_symtab_iter_next (struct dw2_symtab_iterator *iter) | |
3192 | { | |
3193 | for ( ; iter->next < iter->length; ++iter->next) | |
3194 | { | |
3195 | offset_type cu_index_and_attrs = | |
3196 | MAYBE_SWAP (iter->vec[iter->next + 1]); | |
3197 | offset_type cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
3198 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (cu_index); | |
3199 | int want_static = iter->block_index != GLOBAL_BLOCK; | |
3200 | /* This value is only valid for index versions >= 7. */ | |
3201 | int is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu_index_and_attrs); | |
3202 | gdb_index_symbol_kind symbol_kind = | |
3203 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
3204 | /* Only check the symbol attributes if they're present. | |
3205 | Indices prior to version 7 don't record them, | |
3206 | and indices >= 7 may elide them for certain symbols | |
3207 | (gold does this). */ | |
3208 | int attrs_valid = | |
3209 | (iter->index->version >= 7 | |
3210 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE); | |
3211 | ||
3212 | /* Skip if already read in. */ | |
3213 | if (per_cu->v.quick->symtab) | |
3214 | continue; | |
3215 | ||
3216 | if (attrs_valid | |
3217 | && iter->want_specific_block | |
3218 | && want_static != is_static) | |
3219 | continue; | |
3220 | ||
3221 | /* Only check the symbol's kind if it has one. */ | |
3222 | if (attrs_valid) | |
3223 | { | |
3224 | switch (iter->domain) | |
3225 | { | |
3226 | case VAR_DOMAIN: | |
3227 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE | |
3228 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION | |
3229 | /* Some types are also in VAR_DOMAIN. */ | |
3230 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
3231 | continue; | |
3232 | break; | |
3233 | case STRUCT_DOMAIN: | |
3234 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
3235 | continue; | |
3236 | break; | |
3237 | case LABEL_DOMAIN: | |
3238 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
3239 | continue; | |
3240 | break; | |
3241 | default: | |
3242 | break; | |
3243 | } | |
3244 | } | |
3245 | ||
3246 | ++iter->next; | |
3247 | return per_cu; | |
3248 | } | |
3249 | ||
3250 | return NULL; | |
3251 | } | |
3252 | ||
3253 | static struct symtab * | |
3254 | dw2_lookup_symbol (struct objfile *objfile, int block_index, | |
3255 | const char *name, domain_enum domain) | |
9291a0cd | 3256 | { |
da51c347 | 3257 | struct symtab *stab_best = NULL; |
156942c7 DE |
3258 | struct mapped_index *index; |
3259 | ||
9291a0cd TT |
3260 | dw2_setup (objfile); |
3261 | ||
156942c7 DE |
3262 | index = dwarf2_per_objfile->index_table; |
3263 | ||
da51c347 | 3264 | /* index is NULL if OBJF_READNOW. */ |
156942c7 | 3265 | if (index) |
9291a0cd | 3266 | { |
da51c347 DE |
3267 | struct dw2_symtab_iterator iter; |
3268 | struct dwarf2_per_cu_data *per_cu; | |
3269 | ||
3270 | dw2_symtab_iter_init (&iter, index, 1, block_index, domain, name); | |
9291a0cd | 3271 | |
da51c347 | 3272 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) |
9291a0cd | 3273 | { |
da51c347 DE |
3274 | struct symbol *sym = NULL; |
3275 | struct symtab *stab = dw2_instantiate_symtab (per_cu); | |
3276 | ||
3277 | /* Some caution must be observed with overloaded functions | |
3278 | and methods, since the index will not contain any overload | |
3279 | information (but NAME might contain it). */ | |
3280 | if (stab->primary) | |
9291a0cd | 3281 | { |
da51c347 DE |
3282 | struct blockvector *bv = BLOCKVECTOR (stab); |
3283 | struct block *block = BLOCKVECTOR_BLOCK (bv, block_index); | |
156942c7 | 3284 | |
da51c347 DE |
3285 | sym = lookup_block_symbol (block, name, domain); |
3286 | } | |
1fd400ff | 3287 | |
da51c347 DE |
3288 | if (sym && strcmp_iw (SYMBOL_SEARCH_NAME (sym), name) == 0) |
3289 | { | |
3290 | if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym))) | |
3291 | return stab; | |
3292 | ||
3293 | stab_best = stab; | |
9291a0cd | 3294 | } |
da51c347 DE |
3295 | |
3296 | /* Keep looking through other CUs. */ | |
9291a0cd TT |
3297 | } |
3298 | } | |
9291a0cd | 3299 | |
da51c347 | 3300 | return stab_best; |
9291a0cd TT |
3301 | } |
3302 | ||
3303 | static void | |
3304 | dw2_print_stats (struct objfile *objfile) | |
3305 | { | |
e4a48d9d | 3306 | int i, total, count; |
9291a0cd TT |
3307 | |
3308 | dw2_setup (objfile); | |
e4a48d9d | 3309 | total = dwarf2_per_objfile->n_comp_units + dwarf2_per_objfile->n_type_units; |
9291a0cd | 3310 | count = 0; |
e4a48d9d | 3311 | for (i = 0; i < total; ++i) |
9291a0cd | 3312 | { |
e254ef6a | 3313 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
9291a0cd | 3314 | |
e254ef6a | 3315 | if (!per_cu->v.quick->symtab) |
9291a0cd TT |
3316 | ++count; |
3317 | } | |
e4a48d9d | 3318 | printf_filtered (_(" Number of read CUs: %d\n"), total - count); |
9291a0cd TT |
3319 | printf_filtered (_(" Number of unread CUs: %d\n"), count); |
3320 | } | |
3321 | ||
3322 | static void | |
3323 | dw2_dump (struct objfile *objfile) | |
3324 | { | |
3325 | /* Nothing worth printing. */ | |
3326 | } | |
3327 | ||
3328 | static void | |
3329 | dw2_relocate (struct objfile *objfile, struct section_offsets *new_offsets, | |
3330 | struct section_offsets *delta) | |
3331 | { | |
3332 | /* There's nothing to relocate here. */ | |
3333 | } | |
3334 | ||
3335 | static void | |
3336 | dw2_expand_symtabs_for_function (struct objfile *objfile, | |
3337 | const char *func_name) | |
3338 | { | |
da51c347 DE |
3339 | struct mapped_index *index; |
3340 | ||
3341 | dw2_setup (objfile); | |
3342 | ||
3343 | index = dwarf2_per_objfile->index_table; | |
3344 | ||
3345 | /* index is NULL if OBJF_READNOW. */ | |
3346 | if (index) | |
3347 | { | |
3348 | struct dw2_symtab_iterator iter; | |
3349 | struct dwarf2_per_cu_data *per_cu; | |
3350 | ||
3351 | /* Note: It doesn't matter what we pass for block_index here. */ | |
3352 | dw2_symtab_iter_init (&iter, index, 0, GLOBAL_BLOCK, VAR_DOMAIN, | |
3353 | func_name); | |
3354 | ||
3355 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) | |
3356 | dw2_instantiate_symtab (per_cu); | |
3357 | } | |
9291a0cd TT |
3358 | } |
3359 | ||
3360 | static void | |
3361 | dw2_expand_all_symtabs (struct objfile *objfile) | |
3362 | { | |
3363 | int i; | |
3364 | ||
3365 | dw2_setup (objfile); | |
1fd400ff TT |
3366 | |
3367 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units | |
d467dd73 | 3368 | + dwarf2_per_objfile->n_type_units); ++i) |
9291a0cd | 3369 | { |
e254ef6a | 3370 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
9291a0cd | 3371 | |
a0f42c21 | 3372 | dw2_instantiate_symtab (per_cu); |
9291a0cd TT |
3373 | } |
3374 | } | |
3375 | ||
3376 | static void | |
652a8996 JK |
3377 | dw2_expand_symtabs_with_fullname (struct objfile *objfile, |
3378 | const char *fullname) | |
9291a0cd TT |
3379 | { |
3380 | int i; | |
3381 | ||
3382 | dw2_setup (objfile); | |
d4637a04 DE |
3383 | |
3384 | /* We don't need to consider type units here. | |
3385 | This is only called for examining code, e.g. expand_line_sal. | |
3386 | There can be an order of magnitude (or more) more type units | |
3387 | than comp units, and we avoid them if we can. */ | |
3388 | ||
3389 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) | |
9291a0cd TT |
3390 | { |
3391 | int j; | |
e254ef6a | 3392 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
7b9f3c50 | 3393 | struct quick_file_names *file_data; |
9291a0cd | 3394 | |
3d7bb9d9 | 3395 | /* We only need to look at symtabs not already expanded. */ |
e254ef6a | 3396 | if (per_cu->v.quick->symtab) |
9291a0cd TT |
3397 | continue; |
3398 | ||
e4a48d9d | 3399 | file_data = dw2_get_file_names (per_cu); |
7b9f3c50 | 3400 | if (file_data == NULL) |
9291a0cd TT |
3401 | continue; |
3402 | ||
7b9f3c50 | 3403 | for (j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 3404 | { |
652a8996 JK |
3405 | const char *this_fullname = file_data->file_names[j]; |
3406 | ||
3407 | if (filename_cmp (this_fullname, fullname) == 0) | |
9291a0cd | 3408 | { |
a0f42c21 | 3409 | dw2_instantiate_symtab (per_cu); |
9291a0cd TT |
3410 | break; |
3411 | } | |
3412 | } | |
3413 | } | |
3414 | } | |
3415 | ||
356d9f9d TT |
3416 | /* A helper function for dw2_find_symbol_file that finds the primary |
3417 | file name for a given CU. This is a die_reader_func. */ | |
3418 | ||
3419 | static void | |
3420 | dw2_get_primary_filename_reader (const struct die_reader_specs *reader, | |
3421 | gdb_byte *info_ptr, | |
3422 | struct die_info *comp_unit_die, | |
3423 | int has_children, | |
3424 | void *data) | |
3425 | { | |
3426 | const char **result_ptr = data; | |
3427 | struct dwarf2_cu *cu = reader->cu; | |
3428 | struct attribute *attr; | |
3429 | ||
3430 | attr = dwarf2_attr (comp_unit_die, DW_AT_name, cu); | |
3431 | if (attr == NULL) | |
3432 | *result_ptr = NULL; | |
3433 | else | |
3434 | *result_ptr = DW_STRING (attr); | |
3435 | } | |
3436 | ||
dd786858 | 3437 | static const char * |
9291a0cd TT |
3438 | dw2_find_symbol_file (struct objfile *objfile, const char *name) |
3439 | { | |
e254ef6a | 3440 | struct dwarf2_per_cu_data *per_cu; |
9291a0cd | 3441 | offset_type *vec; |
356d9f9d | 3442 | const char *filename; |
9291a0cd TT |
3443 | |
3444 | dw2_setup (objfile); | |
3445 | ||
ae2de4f8 | 3446 | /* index_table is NULL if OBJF_READNOW. */ |
9291a0cd | 3447 | if (!dwarf2_per_objfile->index_table) |
96408a79 SA |
3448 | { |
3449 | struct symtab *s; | |
3450 | ||
d790cf0a DE |
3451 | ALL_OBJFILE_PRIMARY_SYMTABS (objfile, s) |
3452 | { | |
3453 | struct blockvector *bv = BLOCKVECTOR (s); | |
3454 | const struct block *block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); | |
3455 | struct symbol *sym = lookup_block_symbol (block, name, VAR_DOMAIN); | |
3456 | ||
3457 | if (sym) | |
652a8996 JK |
3458 | { |
3459 | /* Only file extension of returned filename is recognized. */ | |
3460 | return SYMBOL_SYMTAB (sym)->filename; | |
3461 | } | |
d790cf0a | 3462 | } |
96408a79 SA |
3463 | return NULL; |
3464 | } | |
9291a0cd TT |
3465 | |
3466 | if (!find_slot_in_mapped_hash (dwarf2_per_objfile->index_table, | |
3467 | name, &vec)) | |
3468 | return NULL; | |
3469 | ||
3470 | /* Note that this just looks at the very first one named NAME -- but | |
3471 | actually we are looking for a function. find_main_filename | |
3472 | should be rewritten so that it doesn't require a custom hook. It | |
3473 | could just use the ordinary symbol tables. */ | |
3474 | /* vec[0] is the length, which must always be >0. */ | |
156942c7 | 3475 | per_cu = dw2_get_cu (GDB_INDEX_CU_VALUE (MAYBE_SWAP (vec[1]))); |
9291a0cd | 3476 | |
356d9f9d | 3477 | if (per_cu->v.quick->symtab != NULL) |
652a8996 JK |
3478 | { |
3479 | /* Only file extension of returned filename is recognized. */ | |
3480 | return per_cu->v.quick->symtab->filename; | |
3481 | } | |
356d9f9d | 3482 | |
f4dc4d17 DE |
3483 | init_cutu_and_read_dies (per_cu, NULL, 0, 0, |
3484 | dw2_get_primary_filename_reader, &filename); | |
9291a0cd | 3485 | |
652a8996 | 3486 | /* Only file extension of returned filename is recognized. */ |
356d9f9d | 3487 | return filename; |
9291a0cd TT |
3488 | } |
3489 | ||
3490 | static void | |
40658b94 PH |
3491 | dw2_map_matching_symbols (const char * name, domain_enum namespace, |
3492 | struct objfile *objfile, int global, | |
3493 | int (*callback) (struct block *, | |
3494 | struct symbol *, void *), | |
2edb89d3 JK |
3495 | void *data, symbol_compare_ftype *match, |
3496 | symbol_compare_ftype *ordered_compare) | |
9291a0cd | 3497 | { |
40658b94 | 3498 | /* Currently unimplemented; used for Ada. The function can be called if the |
a9e6a4bb JK |
3499 | current language is Ada for a non-Ada objfile using GNU index. As Ada |
3500 | does not look for non-Ada symbols this function should just return. */ | |
9291a0cd TT |
3501 | } |
3502 | ||
3503 | static void | |
f8eba3c6 TT |
3504 | dw2_expand_symtabs_matching |
3505 | (struct objfile *objfile, | |
fbd9ab74 | 3506 | int (*file_matcher) (const char *, void *, int basenames), |
e078317b | 3507 | int (*name_matcher) (const char *, void *), |
f8eba3c6 TT |
3508 | enum search_domain kind, |
3509 | void *data) | |
9291a0cd TT |
3510 | { |
3511 | int i; | |
3512 | offset_type iter; | |
4b5246aa | 3513 | struct mapped_index *index; |
9291a0cd TT |
3514 | |
3515 | dw2_setup (objfile); | |
ae2de4f8 DE |
3516 | |
3517 | /* index_table is NULL if OBJF_READNOW. */ | |
9291a0cd TT |
3518 | if (!dwarf2_per_objfile->index_table) |
3519 | return; | |
4b5246aa | 3520 | index = dwarf2_per_objfile->index_table; |
9291a0cd | 3521 | |
7b08b9eb | 3522 | if (file_matcher != NULL) |
24c79950 TT |
3523 | { |
3524 | struct cleanup *cleanup; | |
3525 | htab_t visited_found, visited_not_found; | |
3526 | ||
3527 | visited_found = htab_create_alloc (10, | |
3528 | htab_hash_pointer, htab_eq_pointer, | |
3529 | NULL, xcalloc, xfree); | |
3530 | cleanup = make_cleanup_htab_delete (visited_found); | |
3531 | visited_not_found = htab_create_alloc (10, | |
3532 | htab_hash_pointer, htab_eq_pointer, | |
3533 | NULL, xcalloc, xfree); | |
3534 | make_cleanup_htab_delete (visited_not_found); | |
3535 | ||
848e3e78 DE |
3536 | /* The rule is CUs specify all the files, including those used by |
3537 | any TU, so there's no need to scan TUs here. */ | |
3538 | ||
3539 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) | |
24c79950 TT |
3540 | { |
3541 | int j; | |
f4dc4d17 | 3542 | struct dwarf2_per_cu_data *per_cu = dw2_get_primary_cu (i); |
24c79950 TT |
3543 | struct quick_file_names *file_data; |
3544 | void **slot; | |
7b08b9eb | 3545 | |
24c79950 | 3546 | per_cu->v.quick->mark = 0; |
3d7bb9d9 | 3547 | |
24c79950 TT |
3548 | /* We only need to look at symtabs not already expanded. */ |
3549 | if (per_cu->v.quick->symtab) | |
3550 | continue; | |
7b08b9eb | 3551 | |
e4a48d9d | 3552 | file_data = dw2_get_file_names (per_cu); |
24c79950 TT |
3553 | if (file_data == NULL) |
3554 | continue; | |
7b08b9eb | 3555 | |
24c79950 TT |
3556 | if (htab_find (visited_not_found, file_data) != NULL) |
3557 | continue; | |
3558 | else if (htab_find (visited_found, file_data) != NULL) | |
3559 | { | |
3560 | per_cu->v.quick->mark = 1; | |
3561 | continue; | |
3562 | } | |
3563 | ||
3564 | for (j = 0; j < file_data->num_file_names; ++j) | |
3565 | { | |
da235a7c JK |
3566 | const char *this_real_name; |
3567 | ||
fbd9ab74 | 3568 | if (file_matcher (file_data->file_names[j], data, 0)) |
24c79950 TT |
3569 | { |
3570 | per_cu->v.quick->mark = 1; | |
3571 | break; | |
3572 | } | |
da235a7c JK |
3573 | |
3574 | /* Before we invoke realpath, which can get expensive when many | |
3575 | files are involved, do a quick comparison of the basenames. */ | |
3576 | if (!basenames_may_differ | |
3577 | && !file_matcher (lbasename (file_data->file_names[j]), | |
3578 | data, 1)) | |
3579 | continue; | |
3580 | ||
3581 | this_real_name = dw2_get_real_path (objfile, file_data, j); | |
3582 | if (file_matcher (this_real_name, data, 0)) | |
3583 | { | |
3584 | per_cu->v.quick->mark = 1; | |
3585 | break; | |
3586 | } | |
24c79950 TT |
3587 | } |
3588 | ||
3589 | slot = htab_find_slot (per_cu->v.quick->mark | |
3590 | ? visited_found | |
3591 | : visited_not_found, | |
3592 | file_data, INSERT); | |
3593 | *slot = file_data; | |
3594 | } | |
3595 | ||
3596 | do_cleanups (cleanup); | |
3597 | } | |
9291a0cd | 3598 | |
3876f04e | 3599 | for (iter = 0; iter < index->symbol_table_slots; ++iter) |
9291a0cd TT |
3600 | { |
3601 | offset_type idx = 2 * iter; | |
3602 | const char *name; | |
3603 | offset_type *vec, vec_len, vec_idx; | |
3604 | ||
3876f04e | 3605 | if (index->symbol_table[idx] == 0 && index->symbol_table[idx + 1] == 0) |
9291a0cd TT |
3606 | continue; |
3607 | ||
3876f04e | 3608 | name = index->constant_pool + MAYBE_SWAP (index->symbol_table[idx]); |
9291a0cd | 3609 | |
e078317b | 3610 | if (! (*name_matcher) (name, data)) |
9291a0cd TT |
3611 | continue; |
3612 | ||
3613 | /* The name was matched, now expand corresponding CUs that were | |
3614 | marked. */ | |
4b5246aa | 3615 | vec = (offset_type *) (index->constant_pool |
3876f04e | 3616 | + MAYBE_SWAP (index->symbol_table[idx + 1])); |
9291a0cd TT |
3617 | vec_len = MAYBE_SWAP (vec[0]); |
3618 | for (vec_idx = 0; vec_idx < vec_len; ++vec_idx) | |
3619 | { | |
e254ef6a | 3620 | struct dwarf2_per_cu_data *per_cu; |
156942c7 DE |
3621 | offset_type cu_index_and_attrs = MAYBE_SWAP (vec[vec_idx + 1]); |
3622 | gdb_index_symbol_kind symbol_kind = | |
3623 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
3624 | int cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
3625 | ||
3626 | /* Don't crash on bad data. */ | |
3627 | if (cu_index >= (dwarf2_per_objfile->n_comp_units | |
667e0a4b | 3628 | + dwarf2_per_objfile->n_type_units)) |
156942c7 | 3629 | continue; |
1fd400ff | 3630 | |
156942c7 DE |
3631 | /* Only check the symbol's kind if it has one. |
3632 | Indices prior to version 7 don't record it. */ | |
3633 | if (index->version >= 7) | |
3634 | { | |
3635 | switch (kind) | |
3636 | { | |
3637 | case VARIABLES_DOMAIN: | |
3638 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE) | |
3639 | continue; | |
3640 | break; | |
3641 | case FUNCTIONS_DOMAIN: | |
3642 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION) | |
3643 | continue; | |
3644 | break; | |
3645 | case TYPES_DOMAIN: | |
3646 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
3647 | continue; | |
3648 | break; | |
3649 | default: | |
3650 | break; | |
3651 | } | |
3652 | } | |
3653 | ||
3654 | per_cu = dw2_get_cu (cu_index); | |
7b08b9eb | 3655 | if (file_matcher == NULL || per_cu->v.quick->mark) |
a0f42c21 | 3656 | dw2_instantiate_symtab (per_cu); |
9291a0cd TT |
3657 | } |
3658 | } | |
3659 | } | |
3660 | ||
9703b513 TT |
3661 | /* A helper for dw2_find_pc_sect_symtab which finds the most specific |
3662 | symtab. */ | |
3663 | ||
3664 | static struct symtab * | |
3665 | recursively_find_pc_sect_symtab (struct symtab *symtab, CORE_ADDR pc) | |
3666 | { | |
3667 | int i; | |
3668 | ||
3669 | if (BLOCKVECTOR (symtab) != NULL | |
3670 | && blockvector_contains_pc (BLOCKVECTOR (symtab), pc)) | |
3671 | return symtab; | |
3672 | ||
a3ec0bb1 DE |
3673 | if (symtab->includes == NULL) |
3674 | return NULL; | |
3675 | ||
9703b513 TT |
3676 | for (i = 0; symtab->includes[i]; ++i) |
3677 | { | |
a3ec0bb1 | 3678 | struct symtab *s = symtab->includes[i]; |
9703b513 TT |
3679 | |
3680 | s = recursively_find_pc_sect_symtab (s, pc); | |
3681 | if (s != NULL) | |
3682 | return s; | |
3683 | } | |
3684 | ||
3685 | return NULL; | |
3686 | } | |
3687 | ||
9291a0cd TT |
3688 | static struct symtab * |
3689 | dw2_find_pc_sect_symtab (struct objfile *objfile, | |
3690 | struct minimal_symbol *msymbol, | |
3691 | CORE_ADDR pc, | |
3692 | struct obj_section *section, | |
3693 | int warn_if_readin) | |
3694 | { | |
3695 | struct dwarf2_per_cu_data *data; | |
9703b513 | 3696 | struct symtab *result; |
9291a0cd TT |
3697 | |
3698 | dw2_setup (objfile); | |
3699 | ||
3700 | if (!objfile->psymtabs_addrmap) | |
3701 | return NULL; | |
3702 | ||
3703 | data = addrmap_find (objfile->psymtabs_addrmap, pc); | |
3704 | if (!data) | |
3705 | return NULL; | |
3706 | ||
3707 | if (warn_if_readin && data->v.quick->symtab) | |
abebb8b0 | 3708 | warning (_("(Internal error: pc %s in read in CU, but not in symtab.)"), |
9291a0cd TT |
3709 | paddress (get_objfile_arch (objfile), pc)); |
3710 | ||
9703b513 TT |
3711 | result = recursively_find_pc_sect_symtab (dw2_instantiate_symtab (data), pc); |
3712 | gdb_assert (result != NULL); | |
3713 | return result; | |
9291a0cd TT |
3714 | } |
3715 | ||
9291a0cd | 3716 | static void |
44b13c5a | 3717 | dw2_map_symbol_filenames (struct objfile *objfile, symbol_filename_ftype *fun, |
74e2f255 | 3718 | void *data, int need_fullname) |
9291a0cd TT |
3719 | { |
3720 | int i; | |
24c79950 TT |
3721 | struct cleanup *cleanup; |
3722 | htab_t visited = htab_create_alloc (10, htab_hash_pointer, htab_eq_pointer, | |
3723 | NULL, xcalloc, xfree); | |
9291a0cd | 3724 | |
24c79950 | 3725 | cleanup = make_cleanup_htab_delete (visited); |
9291a0cd | 3726 | dw2_setup (objfile); |
ae2de4f8 | 3727 | |
848e3e78 DE |
3728 | /* The rule is CUs specify all the files, including those used by |
3729 | any TU, so there's no need to scan TUs here. | |
3730 | We can ignore file names coming from already-expanded CUs. */ | |
f4dc4d17 | 3731 | |
848e3e78 | 3732 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
24c79950 TT |
3733 | { |
3734 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); | |
3735 | ||
3736 | if (per_cu->v.quick->symtab) | |
3737 | { | |
3738 | void **slot = htab_find_slot (visited, per_cu->v.quick->file_names, | |
3739 | INSERT); | |
3740 | ||
3741 | *slot = per_cu->v.quick->file_names; | |
3742 | } | |
3743 | } | |
3744 | ||
848e3e78 | 3745 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
9291a0cd TT |
3746 | { |
3747 | int j; | |
f4dc4d17 | 3748 | struct dwarf2_per_cu_data *per_cu = dw2_get_primary_cu (i); |
7b9f3c50 | 3749 | struct quick_file_names *file_data; |
24c79950 | 3750 | void **slot; |
9291a0cd | 3751 | |
3d7bb9d9 | 3752 | /* We only need to look at symtabs not already expanded. */ |
e254ef6a | 3753 | if (per_cu->v.quick->symtab) |
9291a0cd TT |
3754 | continue; |
3755 | ||
e4a48d9d | 3756 | file_data = dw2_get_file_names (per_cu); |
7b9f3c50 | 3757 | if (file_data == NULL) |
9291a0cd TT |
3758 | continue; |
3759 | ||
24c79950 TT |
3760 | slot = htab_find_slot (visited, file_data, INSERT); |
3761 | if (*slot) | |
3762 | { | |
3763 | /* Already visited. */ | |
3764 | continue; | |
3765 | } | |
3766 | *slot = file_data; | |
3767 | ||
7b9f3c50 | 3768 | for (j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 3769 | { |
74e2f255 DE |
3770 | const char *this_real_name; |
3771 | ||
3772 | if (need_fullname) | |
3773 | this_real_name = dw2_get_real_path (objfile, file_data, j); | |
3774 | else | |
3775 | this_real_name = NULL; | |
7b9f3c50 | 3776 | (*fun) (file_data->file_names[j], this_real_name, data); |
9291a0cd TT |
3777 | } |
3778 | } | |
24c79950 TT |
3779 | |
3780 | do_cleanups (cleanup); | |
9291a0cd TT |
3781 | } |
3782 | ||
3783 | static int | |
3784 | dw2_has_symbols (struct objfile *objfile) | |
3785 | { | |
3786 | return 1; | |
3787 | } | |
3788 | ||
3789 | const struct quick_symbol_functions dwarf2_gdb_index_functions = | |
3790 | { | |
3791 | dw2_has_symbols, | |
3792 | dw2_find_last_source_symtab, | |
3793 | dw2_forget_cached_source_info, | |
f8eba3c6 | 3794 | dw2_map_symtabs_matching_filename, |
9291a0cd | 3795 | dw2_lookup_symbol, |
9291a0cd TT |
3796 | dw2_print_stats, |
3797 | dw2_dump, | |
3798 | dw2_relocate, | |
3799 | dw2_expand_symtabs_for_function, | |
3800 | dw2_expand_all_symtabs, | |
652a8996 | 3801 | dw2_expand_symtabs_with_fullname, |
9291a0cd | 3802 | dw2_find_symbol_file, |
40658b94 | 3803 | dw2_map_matching_symbols, |
9291a0cd TT |
3804 | dw2_expand_symtabs_matching, |
3805 | dw2_find_pc_sect_symtab, | |
9291a0cd TT |
3806 | dw2_map_symbol_filenames |
3807 | }; | |
3808 | ||
3809 | /* Initialize for reading DWARF for this objfile. Return 0 if this | |
3810 | file will use psymtabs, or 1 if using the GNU index. */ | |
3811 | ||
3812 | int | |
3813 | dwarf2_initialize_objfile (struct objfile *objfile) | |
3814 | { | |
3815 | /* If we're about to read full symbols, don't bother with the | |
3816 | indices. In this case we also don't care if some other debug | |
3817 | format is making psymtabs, because they are all about to be | |
3818 | expanded anyway. */ | |
3819 | if ((objfile->flags & OBJF_READNOW)) | |
3820 | { | |
3821 | int i; | |
3822 | ||
3823 | dwarf2_per_objfile->using_index = 1; | |
3824 | create_all_comp_units (objfile); | |
0e50663e | 3825 | create_all_type_units (objfile); |
7b9f3c50 DE |
3826 | dwarf2_per_objfile->quick_file_names_table = |
3827 | create_quick_file_names_table (dwarf2_per_objfile->n_comp_units); | |
9291a0cd | 3828 | |
1fd400ff | 3829 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units |
d467dd73 | 3830 | + dwarf2_per_objfile->n_type_units); ++i) |
9291a0cd | 3831 | { |
e254ef6a | 3832 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
9291a0cd | 3833 | |
e254ef6a DE |
3834 | per_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
3835 | struct dwarf2_per_cu_quick_data); | |
9291a0cd TT |
3836 | } |
3837 | ||
3838 | /* Return 1 so that gdb sees the "quick" functions. However, | |
3839 | these functions will be no-ops because we will have expanded | |
3840 | all symtabs. */ | |
3841 | return 1; | |
3842 | } | |
3843 | ||
3844 | if (dwarf2_read_index (objfile)) | |
3845 | return 1; | |
3846 | ||
9291a0cd TT |
3847 | return 0; |
3848 | } | |
3849 | ||
3850 | \f | |
3851 | ||
dce234bc PP |
3852 | /* Build a partial symbol table. */ |
3853 | ||
3854 | void | |
f29dff0a | 3855 | dwarf2_build_psymtabs (struct objfile *objfile) |
dce234bc | 3856 | { |
c9bf0622 TT |
3857 | volatile struct gdb_exception except; |
3858 | ||
f29dff0a | 3859 | if (objfile->global_psymbols.size == 0 && objfile->static_psymbols.size == 0) |
c906108c SS |
3860 | { |
3861 | init_psymbol_list (objfile, 1024); | |
3862 | } | |
3863 | ||
c9bf0622 TT |
3864 | TRY_CATCH (except, RETURN_MASK_ERROR) |
3865 | { | |
3866 | /* This isn't really ideal: all the data we allocate on the | |
3867 | objfile's obstack is still uselessly kept around. However, | |
3868 | freeing it seems unsafe. */ | |
3869 | struct cleanup *cleanups = make_cleanup_discard_psymtabs (objfile); | |
3870 | ||
3871 | dwarf2_build_psymtabs_hard (objfile); | |
3872 | discard_cleanups (cleanups); | |
3873 | } | |
3874 | if (except.reason < 0) | |
3875 | exception_print (gdb_stderr, except); | |
c906108c | 3876 | } |
c906108c | 3877 | |
1ce1cefd DE |
3878 | /* Return the total length of the CU described by HEADER. */ |
3879 | ||
3880 | static unsigned int | |
3881 | get_cu_length (const struct comp_unit_head *header) | |
3882 | { | |
3883 | return header->initial_length_size + header->length; | |
3884 | } | |
3885 | ||
45452591 DE |
3886 | /* Return TRUE if OFFSET is within CU_HEADER. */ |
3887 | ||
3888 | static inline int | |
b64f50a1 | 3889 | offset_in_cu_p (const struct comp_unit_head *cu_header, sect_offset offset) |
45452591 | 3890 | { |
b64f50a1 | 3891 | sect_offset bottom = { cu_header->offset.sect_off }; |
1ce1cefd | 3892 | sect_offset top = { cu_header->offset.sect_off + get_cu_length (cu_header) }; |
9a619af0 | 3893 | |
b64f50a1 | 3894 | return (offset.sect_off >= bottom.sect_off && offset.sect_off < top.sect_off); |
45452591 DE |
3895 | } |
3896 | ||
3b80fe9b DE |
3897 | /* Find the base address of the compilation unit for range lists and |
3898 | location lists. It will normally be specified by DW_AT_low_pc. | |
3899 | In DWARF-3 draft 4, the base address could be overridden by | |
3900 | DW_AT_entry_pc. It's been removed, but GCC still uses this for | |
3901 | compilation units with discontinuous ranges. */ | |
3902 | ||
3903 | static void | |
3904 | dwarf2_find_base_address (struct die_info *die, struct dwarf2_cu *cu) | |
3905 | { | |
3906 | struct attribute *attr; | |
3907 | ||
3908 | cu->base_known = 0; | |
3909 | cu->base_address = 0; | |
3910 | ||
3911 | attr = dwarf2_attr (die, DW_AT_entry_pc, cu); | |
3912 | if (attr) | |
3913 | { | |
3914 | cu->base_address = DW_ADDR (attr); | |
3915 | cu->base_known = 1; | |
3916 | } | |
3917 | else | |
3918 | { | |
3919 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
3920 | if (attr) | |
3921 | { | |
3922 | cu->base_address = DW_ADDR (attr); | |
3923 | cu->base_known = 1; | |
3924 | } | |
3925 | } | |
3926 | } | |
3927 | ||
93311388 DE |
3928 | /* Read in the comp unit header information from the debug_info at info_ptr. |
3929 | NOTE: This leaves members offset, first_die_offset to be filled in | |
3930 | by the caller. */ | |
107d2387 | 3931 | |
fe1b8b76 | 3932 | static gdb_byte * |
107d2387 | 3933 | read_comp_unit_head (struct comp_unit_head *cu_header, |
fe1b8b76 | 3934 | gdb_byte *info_ptr, bfd *abfd) |
107d2387 AC |
3935 | { |
3936 | int signed_addr; | |
891d2f0b | 3937 | unsigned int bytes_read; |
c764a876 DE |
3938 | |
3939 | cu_header->length = read_initial_length (abfd, info_ptr, &bytes_read); | |
3940 | cu_header->initial_length_size = bytes_read; | |
3941 | cu_header->offset_size = (bytes_read == 4) ? 4 : 8; | |
613e1657 | 3942 | info_ptr += bytes_read; |
107d2387 AC |
3943 | cu_header->version = read_2_bytes (abfd, info_ptr); |
3944 | info_ptr += 2; | |
b64f50a1 JK |
3945 | cu_header->abbrev_offset.sect_off = read_offset (abfd, info_ptr, cu_header, |
3946 | &bytes_read); | |
613e1657 | 3947 | info_ptr += bytes_read; |
107d2387 AC |
3948 | cu_header->addr_size = read_1_byte (abfd, info_ptr); |
3949 | info_ptr += 1; | |
3950 | signed_addr = bfd_get_sign_extend_vma (abfd); | |
3951 | if (signed_addr < 0) | |
8e65ff28 | 3952 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 3953 | _("read_comp_unit_head: dwarf from non elf file")); |
107d2387 | 3954 | cu_header->signed_addr_p = signed_addr; |
c764a876 | 3955 | |
107d2387 AC |
3956 | return info_ptr; |
3957 | } | |
3958 | ||
36586728 TT |
3959 | /* Helper function that returns the proper abbrev section for |
3960 | THIS_CU. */ | |
3961 | ||
3962 | static struct dwarf2_section_info * | |
3963 | get_abbrev_section_for_cu (struct dwarf2_per_cu_data *this_cu) | |
3964 | { | |
3965 | struct dwarf2_section_info *abbrev; | |
3966 | ||
3967 | if (this_cu->is_dwz) | |
3968 | abbrev = &dwarf2_get_dwz_file ()->abbrev; | |
3969 | else | |
3970 | abbrev = &dwarf2_per_objfile->abbrev; | |
3971 | ||
3972 | return abbrev; | |
3973 | } | |
3974 | ||
9ff913ba DE |
3975 | /* Subroutine of read_and_check_comp_unit_head and |
3976 | read_and_check_type_unit_head to simplify them. | |
3977 | Perform various error checking on the header. */ | |
3978 | ||
3979 | static void | |
3980 | error_check_comp_unit_head (struct comp_unit_head *header, | |
4bdcc0c1 DE |
3981 | struct dwarf2_section_info *section, |
3982 | struct dwarf2_section_info *abbrev_section) | |
9ff913ba DE |
3983 | { |
3984 | bfd *abfd = section->asection->owner; | |
3985 | const char *filename = bfd_get_filename (abfd); | |
3986 | ||
3987 | if (header->version != 2 && header->version != 3 && header->version != 4) | |
3988 | error (_("Dwarf Error: wrong version in compilation unit header " | |
3989 | "(is %d, should be 2, 3, or 4) [in module %s]"), header->version, | |
3990 | filename); | |
3991 | ||
b64f50a1 | 3992 | if (header->abbrev_offset.sect_off |
36586728 | 3993 | >= dwarf2_section_size (dwarf2_per_objfile->objfile, abbrev_section)) |
9ff913ba DE |
3994 | error (_("Dwarf Error: bad offset (0x%lx) in compilation unit header " |
3995 | "(offset 0x%lx + 6) [in module %s]"), | |
b64f50a1 | 3996 | (long) header->abbrev_offset.sect_off, (long) header->offset.sect_off, |
9ff913ba DE |
3997 | filename); |
3998 | ||
3999 | /* Cast to unsigned long to use 64-bit arithmetic when possible to | |
4000 | avoid potential 32-bit overflow. */ | |
1ce1cefd | 4001 | if (((unsigned long) header->offset.sect_off + get_cu_length (header)) |
9ff913ba DE |
4002 | > section->size) |
4003 | error (_("Dwarf Error: bad length (0x%lx) in compilation unit header " | |
4004 | "(offset 0x%lx + 0) [in module %s]"), | |
b64f50a1 | 4005 | (long) header->length, (long) header->offset.sect_off, |
9ff913ba DE |
4006 | filename); |
4007 | } | |
4008 | ||
4009 | /* Read in a CU/TU header and perform some basic error checking. | |
4010 | The contents of the header are stored in HEADER. | |
4011 | The result is a pointer to the start of the first DIE. */ | |
adabb602 | 4012 | |
fe1b8b76 | 4013 | static gdb_byte * |
9ff913ba DE |
4014 | read_and_check_comp_unit_head (struct comp_unit_head *header, |
4015 | struct dwarf2_section_info *section, | |
4bdcc0c1 | 4016 | struct dwarf2_section_info *abbrev_section, |
9ff913ba DE |
4017 | gdb_byte *info_ptr, |
4018 | int is_debug_types_section) | |
72bf9492 | 4019 | { |
fe1b8b76 | 4020 | gdb_byte *beg_of_comp_unit = info_ptr; |
9ff913ba | 4021 | bfd *abfd = section->asection->owner; |
72bf9492 | 4022 | |
b64f50a1 | 4023 | header->offset.sect_off = beg_of_comp_unit - section->buffer; |
adabb602 | 4024 | |
72bf9492 DJ |
4025 | info_ptr = read_comp_unit_head (header, info_ptr, abfd); |
4026 | ||
460c1c54 CC |
4027 | /* If we're reading a type unit, skip over the signature and |
4028 | type_offset fields. */ | |
b0df02fd | 4029 | if (is_debug_types_section) |
460c1c54 CC |
4030 | info_ptr += 8 /*signature*/ + header->offset_size; |
4031 | ||
b64f50a1 | 4032 | header->first_die_offset.cu_off = info_ptr - beg_of_comp_unit; |
adabb602 | 4033 | |
4bdcc0c1 | 4034 | error_check_comp_unit_head (header, section, abbrev_section); |
72bf9492 DJ |
4035 | |
4036 | return info_ptr; | |
4037 | } | |
4038 | ||
348e048f DE |
4039 | /* Read in the types comp unit header information from .debug_types entry at |
4040 | types_ptr. The result is a pointer to one past the end of the header. */ | |
4041 | ||
4042 | static gdb_byte * | |
9ff913ba DE |
4043 | read_and_check_type_unit_head (struct comp_unit_head *header, |
4044 | struct dwarf2_section_info *section, | |
4bdcc0c1 | 4045 | struct dwarf2_section_info *abbrev_section, |
9ff913ba | 4046 | gdb_byte *info_ptr, |
dee91e82 DE |
4047 | ULONGEST *signature, |
4048 | cu_offset *type_offset_in_tu) | |
348e048f | 4049 | { |
9ff913ba DE |
4050 | gdb_byte *beg_of_comp_unit = info_ptr; |
4051 | bfd *abfd = section->asection->owner; | |
348e048f | 4052 | |
b64f50a1 | 4053 | header->offset.sect_off = beg_of_comp_unit - section->buffer; |
348e048f | 4054 | |
9ff913ba | 4055 | info_ptr = read_comp_unit_head (header, info_ptr, abfd); |
348e048f | 4056 | |
9ff913ba DE |
4057 | /* If we're reading a type unit, skip over the signature and |
4058 | type_offset fields. */ | |
4059 | if (signature != NULL) | |
4060 | *signature = read_8_bytes (abfd, info_ptr); | |
4061 | info_ptr += 8; | |
dee91e82 DE |
4062 | if (type_offset_in_tu != NULL) |
4063 | type_offset_in_tu->cu_off = read_offset_1 (abfd, info_ptr, | |
4064 | header->offset_size); | |
9ff913ba DE |
4065 | info_ptr += header->offset_size; |
4066 | ||
b64f50a1 | 4067 | header->first_die_offset.cu_off = info_ptr - beg_of_comp_unit; |
348e048f | 4068 | |
4bdcc0c1 | 4069 | error_check_comp_unit_head (header, section, abbrev_section); |
9ff913ba DE |
4070 | |
4071 | return info_ptr; | |
348e048f DE |
4072 | } |
4073 | ||
f4dc4d17 DE |
4074 | /* Fetch the abbreviation table offset from a comp or type unit header. */ |
4075 | ||
4076 | static sect_offset | |
4077 | read_abbrev_offset (struct dwarf2_section_info *section, | |
4078 | sect_offset offset) | |
4079 | { | |
4080 | bfd *abfd = section->asection->owner; | |
4081 | gdb_byte *info_ptr; | |
4082 | unsigned int length, initial_length_size, offset_size; | |
4083 | sect_offset abbrev_offset; | |
4084 | ||
4085 | dwarf2_read_section (dwarf2_per_objfile->objfile, section); | |
4086 | info_ptr = section->buffer + offset.sect_off; | |
4087 | length = read_initial_length (abfd, info_ptr, &initial_length_size); | |
4088 | offset_size = initial_length_size == 4 ? 4 : 8; | |
4089 | info_ptr += initial_length_size + 2 /*version*/; | |
4090 | abbrev_offset.sect_off = read_offset_1 (abfd, info_ptr, offset_size); | |
4091 | return abbrev_offset; | |
4092 | } | |
4093 | ||
aaa75496 JB |
4094 | /* Allocate a new partial symtab for file named NAME and mark this new |
4095 | partial symtab as being an include of PST. */ | |
4096 | ||
4097 | static void | |
4098 | dwarf2_create_include_psymtab (char *name, struct partial_symtab *pst, | |
4099 | struct objfile *objfile) | |
4100 | { | |
4101 | struct partial_symtab *subpst = allocate_psymtab (name, objfile); | |
4102 | ||
fbd9ab74 JK |
4103 | if (!IS_ABSOLUTE_PATH (subpst->filename)) |
4104 | { | |
4105 | /* It shares objfile->objfile_obstack. */ | |
4106 | subpst->dirname = pst->dirname; | |
4107 | } | |
4108 | ||
aaa75496 JB |
4109 | subpst->section_offsets = pst->section_offsets; |
4110 | subpst->textlow = 0; | |
4111 | subpst->texthigh = 0; | |
4112 | ||
4113 | subpst->dependencies = (struct partial_symtab **) | |
4114 | obstack_alloc (&objfile->objfile_obstack, | |
4115 | sizeof (struct partial_symtab *)); | |
4116 | subpst->dependencies[0] = pst; | |
4117 | subpst->number_of_dependencies = 1; | |
4118 | ||
4119 | subpst->globals_offset = 0; | |
4120 | subpst->n_global_syms = 0; | |
4121 | subpst->statics_offset = 0; | |
4122 | subpst->n_static_syms = 0; | |
4123 | subpst->symtab = NULL; | |
4124 | subpst->read_symtab = pst->read_symtab; | |
4125 | subpst->readin = 0; | |
4126 | ||
4127 | /* No private part is necessary for include psymtabs. This property | |
4128 | can be used to differentiate between such include psymtabs and | |
10b3939b | 4129 | the regular ones. */ |
58a9656e | 4130 | subpst->read_symtab_private = NULL; |
aaa75496 JB |
4131 | } |
4132 | ||
4133 | /* Read the Line Number Program data and extract the list of files | |
4134 | included by the source file represented by PST. Build an include | |
d85a05f0 | 4135 | partial symtab for each of these included files. */ |
aaa75496 JB |
4136 | |
4137 | static void | |
4138 | dwarf2_build_include_psymtabs (struct dwarf2_cu *cu, | |
dee91e82 DE |
4139 | struct die_info *die, |
4140 | struct partial_symtab *pst) | |
aaa75496 | 4141 | { |
d85a05f0 DJ |
4142 | struct line_header *lh = NULL; |
4143 | struct attribute *attr; | |
aaa75496 | 4144 | |
d85a05f0 DJ |
4145 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
4146 | if (attr) | |
3019eac3 | 4147 | lh = dwarf_decode_line_header (DW_UNSND (attr), cu); |
aaa75496 JB |
4148 | if (lh == NULL) |
4149 | return; /* No linetable, so no includes. */ | |
4150 | ||
c6da4cef | 4151 | /* NOTE: pst->dirname is DW_AT_comp_dir (if present). */ |
f3f5162e | 4152 | dwarf_decode_lines (lh, pst->dirname, cu, pst, 1); |
aaa75496 JB |
4153 | |
4154 | free_line_header (lh); | |
4155 | } | |
4156 | ||
348e048f | 4157 | static hashval_t |
52dc124a | 4158 | hash_signatured_type (const void *item) |
348e048f | 4159 | { |
52dc124a | 4160 | const struct signatured_type *sig_type = item; |
9a619af0 | 4161 | |
348e048f | 4162 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
52dc124a | 4163 | return sig_type->signature; |
348e048f DE |
4164 | } |
4165 | ||
4166 | static int | |
52dc124a | 4167 | eq_signatured_type (const void *item_lhs, const void *item_rhs) |
348e048f DE |
4168 | { |
4169 | const struct signatured_type *lhs = item_lhs; | |
4170 | const struct signatured_type *rhs = item_rhs; | |
9a619af0 | 4171 | |
348e048f DE |
4172 | return lhs->signature == rhs->signature; |
4173 | } | |
4174 | ||
1fd400ff TT |
4175 | /* Allocate a hash table for signatured types. */ |
4176 | ||
4177 | static htab_t | |
673bfd45 | 4178 | allocate_signatured_type_table (struct objfile *objfile) |
1fd400ff TT |
4179 | { |
4180 | return htab_create_alloc_ex (41, | |
52dc124a DE |
4181 | hash_signatured_type, |
4182 | eq_signatured_type, | |
1fd400ff TT |
4183 | NULL, |
4184 | &objfile->objfile_obstack, | |
4185 | hashtab_obstack_allocate, | |
4186 | dummy_obstack_deallocate); | |
4187 | } | |
4188 | ||
d467dd73 | 4189 | /* A helper function to add a signatured type CU to a table. */ |
1fd400ff TT |
4190 | |
4191 | static int | |
d467dd73 | 4192 | add_signatured_type_cu_to_table (void **slot, void *datum) |
1fd400ff TT |
4193 | { |
4194 | struct signatured_type *sigt = *slot; | |
b4dd5633 | 4195 | struct signatured_type ***datap = datum; |
1fd400ff | 4196 | |
b4dd5633 | 4197 | **datap = sigt; |
1fd400ff TT |
4198 | ++*datap; |
4199 | ||
4200 | return 1; | |
4201 | } | |
4202 | ||
c88ee1f0 DE |
4203 | /* Create the hash table of all entries in the .debug_types |
4204 | (or .debug_types.dwo) section(s). | |
4205 | If reading a DWO file, then DWO_FILE is a pointer to the DWO file object, | |
4206 | otherwise it is NULL. | |
4207 | ||
4208 | The result is a pointer to the hash table or NULL if there are no types. | |
4209 | ||
4210 | Note: This function processes DWO files only, not DWP files. */ | |
348e048f | 4211 | |
3019eac3 DE |
4212 | static htab_t |
4213 | create_debug_types_hash_table (struct dwo_file *dwo_file, | |
4214 | VEC (dwarf2_section_info_def) *types) | |
348e048f | 4215 | { |
3019eac3 | 4216 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8b70b953 | 4217 | htab_t types_htab = NULL; |
8b70b953 TT |
4218 | int ix; |
4219 | struct dwarf2_section_info *section; | |
4bdcc0c1 | 4220 | struct dwarf2_section_info *abbrev_section; |
348e048f | 4221 | |
3019eac3 DE |
4222 | if (VEC_empty (dwarf2_section_info_def, types)) |
4223 | return NULL; | |
348e048f | 4224 | |
4bdcc0c1 DE |
4225 | abbrev_section = (dwo_file != NULL |
4226 | ? &dwo_file->sections.abbrev | |
4227 | : &dwarf2_per_objfile->abbrev); | |
4228 | ||
09406207 DE |
4229 | if (dwarf2_read_debug) |
4230 | fprintf_unfiltered (gdb_stdlog, "Reading .debug_types%s for %s:\n", | |
4231 | dwo_file ? ".dwo" : "", | |
4232 | bfd_get_filename (abbrev_section->asection->owner)); | |
4233 | ||
8b70b953 | 4234 | for (ix = 0; |
3019eac3 | 4235 | VEC_iterate (dwarf2_section_info_def, types, ix, section); |
8b70b953 TT |
4236 | ++ix) |
4237 | { | |
3019eac3 | 4238 | bfd *abfd; |
8b70b953 | 4239 | gdb_byte *info_ptr, *end_ptr; |
36586728 | 4240 | struct dwarf2_section_info *abbrev_section; |
348e048f | 4241 | |
8b70b953 TT |
4242 | dwarf2_read_section (objfile, section); |
4243 | info_ptr = section->buffer; | |
348e048f | 4244 | |
8b70b953 TT |
4245 | if (info_ptr == NULL) |
4246 | continue; | |
348e048f | 4247 | |
3019eac3 DE |
4248 | /* We can't set abfd until now because the section may be empty or |
4249 | not present, in which case section->asection will be NULL. */ | |
4250 | abfd = section->asection->owner; | |
4251 | ||
36586728 TT |
4252 | if (dwo_file) |
4253 | abbrev_section = &dwo_file->sections.abbrev; | |
4254 | else | |
4255 | abbrev_section = &dwarf2_per_objfile->abbrev; | |
4256 | ||
dee91e82 DE |
4257 | /* We don't use init_cutu_and_read_dies_simple, or some such, here |
4258 | because we don't need to read any dies: the signature is in the | |
4259 | header. */ | |
8b70b953 TT |
4260 | |
4261 | end_ptr = info_ptr + section->size; | |
4262 | while (info_ptr < end_ptr) | |
4263 | { | |
b64f50a1 | 4264 | sect_offset offset; |
3019eac3 | 4265 | cu_offset type_offset_in_tu; |
8b70b953 | 4266 | ULONGEST signature; |
52dc124a | 4267 | struct signatured_type *sig_type; |
3019eac3 | 4268 | struct dwo_unit *dwo_tu; |
8b70b953 TT |
4269 | void **slot; |
4270 | gdb_byte *ptr = info_ptr; | |
9ff913ba | 4271 | struct comp_unit_head header; |
dee91e82 | 4272 | unsigned int length; |
348e048f | 4273 | |
b64f50a1 | 4274 | offset.sect_off = ptr - section->buffer; |
348e048f | 4275 | |
8b70b953 | 4276 | /* We need to read the type's signature in order to build the hash |
9ff913ba | 4277 | table, but we don't need anything else just yet. */ |
348e048f | 4278 | |
4bdcc0c1 DE |
4279 | ptr = read_and_check_type_unit_head (&header, section, |
4280 | abbrev_section, ptr, | |
3019eac3 | 4281 | &signature, &type_offset_in_tu); |
6caca83c | 4282 | |
1ce1cefd | 4283 | length = get_cu_length (&header); |
dee91e82 | 4284 | |
6caca83c | 4285 | /* Skip dummy type units. */ |
dee91e82 DE |
4286 | if (ptr >= info_ptr + length |
4287 | || peek_abbrev_code (abfd, ptr) == 0) | |
6caca83c | 4288 | { |
1ce1cefd | 4289 | info_ptr += length; |
6caca83c CC |
4290 | continue; |
4291 | } | |
8b70b953 | 4292 | |
0349ea22 DE |
4293 | if (types_htab == NULL) |
4294 | { | |
4295 | if (dwo_file) | |
4296 | types_htab = allocate_dwo_unit_table (objfile); | |
4297 | else | |
4298 | types_htab = allocate_signatured_type_table (objfile); | |
4299 | } | |
4300 | ||
3019eac3 DE |
4301 | if (dwo_file) |
4302 | { | |
4303 | sig_type = NULL; | |
4304 | dwo_tu = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
4305 | struct dwo_unit); | |
4306 | dwo_tu->dwo_file = dwo_file; | |
4307 | dwo_tu->signature = signature; | |
4308 | dwo_tu->type_offset_in_tu = type_offset_in_tu; | |
8a0459fd | 4309 | dwo_tu->section = section; |
3019eac3 DE |
4310 | dwo_tu->offset = offset; |
4311 | dwo_tu->length = length; | |
4312 | } | |
4313 | else | |
4314 | { | |
4315 | /* N.B.: type_offset is not usable if this type uses a DWO file. | |
4316 | The real type_offset is in the DWO file. */ | |
4317 | dwo_tu = NULL; | |
4318 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
4319 | struct signatured_type); | |
4320 | sig_type->signature = signature; | |
4321 | sig_type->type_offset_in_tu = type_offset_in_tu; | |
4322 | sig_type->per_cu.objfile = objfile; | |
4323 | sig_type->per_cu.is_debug_types = 1; | |
8a0459fd | 4324 | sig_type->per_cu.section = section; |
3019eac3 DE |
4325 | sig_type->per_cu.offset = offset; |
4326 | sig_type->per_cu.length = length; | |
4327 | } | |
8b70b953 | 4328 | |
3019eac3 DE |
4329 | slot = htab_find_slot (types_htab, |
4330 | dwo_file ? (void*) dwo_tu : (void *) sig_type, | |
4331 | INSERT); | |
8b70b953 TT |
4332 | gdb_assert (slot != NULL); |
4333 | if (*slot != NULL) | |
4334 | { | |
3019eac3 DE |
4335 | sect_offset dup_offset; |
4336 | ||
4337 | if (dwo_file) | |
4338 | { | |
4339 | const struct dwo_unit *dup_tu = *slot; | |
4340 | ||
4341 | dup_offset = dup_tu->offset; | |
4342 | } | |
4343 | else | |
4344 | { | |
4345 | const struct signatured_type *dup_tu = *slot; | |
4346 | ||
4347 | dup_offset = dup_tu->per_cu.offset; | |
4348 | } | |
b3c8eb43 | 4349 | |
8b70b953 | 4350 | complaint (&symfile_complaints, |
c88ee1f0 DE |
4351 | _("debug type entry at offset 0x%x is duplicate to" |
4352 | " the entry at offset 0x%x, signature 0x%s"), | |
3019eac3 | 4353 | offset.sect_off, dup_offset.sect_off, |
8b70b953 | 4354 | phex (signature, sizeof (signature))); |
8b70b953 | 4355 | } |
3019eac3 | 4356 | *slot = dwo_file ? (void *) dwo_tu : (void *) sig_type; |
348e048f | 4357 | |
09406207 | 4358 | if (dwarf2_read_debug) |
8b70b953 | 4359 | fprintf_unfiltered (gdb_stdlog, " offset 0x%x, signature 0x%s\n", |
b64f50a1 JK |
4360 | offset.sect_off, |
4361 | phex (signature, sizeof (signature))); | |
348e048f | 4362 | |
dee91e82 | 4363 | info_ptr += length; |
8b70b953 | 4364 | } |
348e048f DE |
4365 | } |
4366 | ||
3019eac3 DE |
4367 | return types_htab; |
4368 | } | |
4369 | ||
4370 | /* Create the hash table of all entries in the .debug_types section, | |
4371 | and initialize all_type_units. | |
4372 | The result is zero if there is an error (e.g. missing .debug_types section), | |
4373 | otherwise non-zero. */ | |
4374 | ||
4375 | static int | |
4376 | create_all_type_units (struct objfile *objfile) | |
4377 | { | |
4378 | htab_t types_htab; | |
b4dd5633 | 4379 | struct signatured_type **iter; |
3019eac3 DE |
4380 | |
4381 | types_htab = create_debug_types_hash_table (NULL, dwarf2_per_objfile->types); | |
4382 | if (types_htab == NULL) | |
4383 | { | |
4384 | dwarf2_per_objfile->signatured_types = NULL; | |
4385 | return 0; | |
4386 | } | |
4387 | ||
348e048f DE |
4388 | dwarf2_per_objfile->signatured_types = types_htab; |
4389 | ||
d467dd73 DE |
4390 | dwarf2_per_objfile->n_type_units = htab_elements (types_htab); |
4391 | dwarf2_per_objfile->all_type_units | |
1fd400ff | 4392 | = obstack_alloc (&objfile->objfile_obstack, |
d467dd73 | 4393 | dwarf2_per_objfile->n_type_units |
b4dd5633 | 4394 | * sizeof (struct signatured_type *)); |
d467dd73 DE |
4395 | iter = &dwarf2_per_objfile->all_type_units[0]; |
4396 | htab_traverse_noresize (types_htab, add_signatured_type_cu_to_table, &iter); | |
4397 | gdb_assert (iter - &dwarf2_per_objfile->all_type_units[0] | |
4398 | == dwarf2_per_objfile->n_type_units); | |
1fd400ff | 4399 | |
348e048f DE |
4400 | return 1; |
4401 | } | |
4402 | ||
380bca97 | 4403 | /* Lookup a signature based type for DW_FORM_ref_sig8. |
5a8b3f62 DE |
4404 | Returns NULL if signature SIG is not present in the table. |
4405 | It is up to the caller to complain about this. */ | |
348e048f DE |
4406 | |
4407 | static struct signatured_type * | |
e319fa28 | 4408 | lookup_signatured_type (ULONGEST sig) |
348e048f DE |
4409 | { |
4410 | struct signatured_type find_entry, *entry; | |
4411 | ||
4412 | if (dwarf2_per_objfile->signatured_types == NULL) | |
5a8b3f62 | 4413 | return NULL; |
348e048f DE |
4414 | find_entry.signature = sig; |
4415 | entry = htab_find (dwarf2_per_objfile->signatured_types, &find_entry); | |
4416 | return entry; | |
4417 | } | |
42e7ad6c DE |
4418 | \f |
4419 | /* Low level DIE reading support. */ | |
348e048f | 4420 | |
d85a05f0 DJ |
4421 | /* Initialize a die_reader_specs struct from a dwarf2_cu struct. */ |
4422 | ||
4423 | static void | |
4424 | init_cu_die_reader (struct die_reader_specs *reader, | |
dee91e82 | 4425 | struct dwarf2_cu *cu, |
3019eac3 DE |
4426 | struct dwarf2_section_info *section, |
4427 | struct dwo_file *dwo_file) | |
d85a05f0 | 4428 | { |
fceca515 | 4429 | gdb_assert (section->readin && section->buffer != NULL); |
dee91e82 | 4430 | reader->abfd = section->asection->owner; |
d85a05f0 | 4431 | reader->cu = cu; |
3019eac3 | 4432 | reader->dwo_file = dwo_file; |
dee91e82 DE |
4433 | reader->die_section = section; |
4434 | reader->buffer = section->buffer; | |
f664829e | 4435 | reader->buffer_end = section->buffer + section->size; |
d85a05f0 DJ |
4436 | } |
4437 | ||
b0c7bfa9 DE |
4438 | /* Subroutine of init_cutu_and_read_dies to simplify it. |
4439 | Read in the rest of a CU/TU top level DIE from DWO_UNIT. | |
4440 | There's just a lot of work to do, and init_cutu_and_read_dies is big enough | |
4441 | already. | |
4442 | ||
4443 | STUB_COMP_UNIT_DIE is for the stub DIE, we copy over certain attributes | |
4444 | from it to the DIE in the DWO. If NULL we are skipping the stub. | |
4445 | *RESULT_READER,*RESULT_INFO_PTR,*RESULT_COMP_UNIT_DIE,*RESULT_HAS_CHILDREN | |
4446 | are filled in with the info of the DIE from the DWO file. | |
4447 | ABBREV_TABLE_PROVIDED is non-zero if the caller of init_cutu_and_read_dies | |
4448 | provided an abbrev table to use. | |
4449 | The result is non-zero if a valid (non-dummy) DIE was found. */ | |
4450 | ||
4451 | static int | |
4452 | read_cutu_die_from_dwo (struct dwarf2_per_cu_data *this_cu, | |
4453 | struct dwo_unit *dwo_unit, | |
4454 | int abbrev_table_provided, | |
4455 | struct die_info *stub_comp_unit_die, | |
4456 | struct die_reader_specs *result_reader, | |
4457 | gdb_byte **result_info_ptr, | |
4458 | struct die_info **result_comp_unit_die, | |
4459 | int *result_has_children) | |
4460 | { | |
4461 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
4462 | struct dwarf2_cu *cu = this_cu->cu; | |
4463 | struct dwarf2_section_info *section; | |
4464 | bfd *abfd; | |
4465 | gdb_byte *begin_info_ptr, *info_ptr; | |
4466 | const char *comp_dir_string; | |
4467 | ULONGEST signature; /* Or dwo_id. */ | |
4468 | struct attribute *comp_dir, *stmt_list, *low_pc, *high_pc, *ranges; | |
4469 | int i,num_extra_attrs; | |
4470 | struct dwarf2_section_info *dwo_abbrev_section; | |
4471 | struct attribute *attr; | |
4472 | struct die_info *comp_unit_die; | |
4473 | ||
4474 | /* These attributes aren't processed until later: | |
4475 | DW_AT_stmt_list, DW_AT_low_pc, DW_AT_high_pc, DW_AT_ranges. | |
4476 | However, the attribute is found in the stub which we won't have later. | |
4477 | In order to not impose this complication on the rest of the code, | |
4478 | we read them here and copy them to the DWO CU/TU die. */ | |
4479 | ||
4480 | stmt_list = NULL; | |
4481 | low_pc = NULL; | |
4482 | high_pc = NULL; | |
4483 | ranges = NULL; | |
4484 | comp_dir = NULL; | |
4485 | ||
4486 | if (stub_comp_unit_die != NULL) | |
4487 | { | |
4488 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
4489 | DWO file. */ | |
4490 | if (! this_cu->is_debug_types) | |
4491 | stmt_list = dwarf2_attr (stub_comp_unit_die, DW_AT_stmt_list, cu); | |
4492 | low_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_low_pc, cu); | |
4493 | high_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_high_pc, cu); | |
4494 | ranges = dwarf2_attr (stub_comp_unit_die, DW_AT_ranges, cu); | |
4495 | comp_dir = dwarf2_attr (stub_comp_unit_die, DW_AT_comp_dir, cu); | |
4496 | ||
4497 | /* There should be a DW_AT_addr_base attribute here (if needed). | |
4498 | We need the value before we can process DW_FORM_GNU_addr_index. */ | |
4499 | cu->addr_base = 0; | |
4500 | attr = dwarf2_attr (stub_comp_unit_die, DW_AT_GNU_addr_base, cu); | |
4501 | if (attr) | |
4502 | cu->addr_base = DW_UNSND (attr); | |
4503 | ||
4504 | /* There should be a DW_AT_ranges_base attribute here (if needed). | |
4505 | We need the value before we can process DW_AT_ranges. */ | |
4506 | cu->ranges_base = 0; | |
4507 | attr = dwarf2_attr (stub_comp_unit_die, DW_AT_GNU_ranges_base, cu); | |
4508 | if (attr) | |
4509 | cu->ranges_base = DW_UNSND (attr); | |
4510 | } | |
4511 | ||
4512 | /* Set up for reading the DWO CU/TU. */ | |
4513 | cu->dwo_unit = dwo_unit; | |
4514 | section = dwo_unit->section; | |
4515 | dwarf2_read_section (objfile, section); | |
4516 | abfd = section->asection->owner; | |
4517 | begin_info_ptr = info_ptr = section->buffer + dwo_unit->offset.sect_off; | |
4518 | dwo_abbrev_section = &dwo_unit->dwo_file->sections.abbrev; | |
4519 | init_cu_die_reader (result_reader, cu, section, dwo_unit->dwo_file); | |
4520 | ||
4521 | if (this_cu->is_debug_types) | |
4522 | { | |
4523 | ULONGEST header_signature; | |
4524 | cu_offset type_offset_in_tu; | |
4525 | struct signatured_type *sig_type = (struct signatured_type *) this_cu; | |
4526 | ||
4527 | info_ptr = read_and_check_type_unit_head (&cu->header, section, | |
4528 | dwo_abbrev_section, | |
4529 | info_ptr, | |
4530 | &header_signature, | |
4531 | &type_offset_in_tu); | |
4532 | gdb_assert (sig_type->signature == header_signature); | |
4533 | gdb_assert (dwo_unit->offset.sect_off == cu->header.offset.sect_off); | |
4534 | /* For DWOs coming from DWP files, we don't know the CU length | |
4535 | nor the type's offset in the TU until now. */ | |
4536 | dwo_unit->length = get_cu_length (&cu->header); | |
4537 | dwo_unit->type_offset_in_tu = type_offset_in_tu; | |
4538 | ||
4539 | /* Establish the type offset that can be used to lookup the type. | |
4540 | For DWO files, we don't know it until now. */ | |
4541 | sig_type->type_offset_in_section.sect_off = | |
4542 | dwo_unit->offset.sect_off + dwo_unit->type_offset_in_tu.cu_off; | |
4543 | } | |
4544 | else | |
4545 | { | |
4546 | info_ptr = read_and_check_comp_unit_head (&cu->header, section, | |
4547 | dwo_abbrev_section, | |
4548 | info_ptr, 0); | |
4549 | gdb_assert (dwo_unit->offset.sect_off == cu->header.offset.sect_off); | |
4550 | /* For DWOs coming from DWP files, we don't know the CU length | |
4551 | until now. */ | |
4552 | dwo_unit->length = get_cu_length (&cu->header); | |
4553 | } | |
4554 | ||
4555 | /* Replace the CU's original abbrev table with the DWO's. */ | |
4556 | if (abbrev_table_provided) | |
4557 | { | |
4558 | /* Don't free the provided abbrev table, the caller of | |
4559 | init_cutu_and_read_dies owns it. */ | |
4560 | dwarf2_read_abbrevs (cu, dwo_abbrev_section); | |
4561 | make_cleanup (dwarf2_free_abbrev_table, cu); | |
4562 | } | |
4563 | else | |
4564 | { | |
4565 | dwarf2_free_abbrev_table (cu); | |
4566 | dwarf2_read_abbrevs (cu, dwo_abbrev_section); | |
4567 | } | |
4568 | ||
4569 | /* Read in the die, but leave space to copy over the attributes | |
4570 | from the stub. This has the benefit of simplifying the rest of | |
4571 | the code - all the work to maintain the illusion of a single | |
4572 | DW_TAG_{compile,type}_unit DIE is done here. */ | |
4573 | num_extra_attrs = ((stmt_list != NULL) | |
4574 | + (low_pc != NULL) | |
4575 | + (high_pc != NULL) | |
4576 | + (ranges != NULL) | |
4577 | + (comp_dir != NULL)); | |
4578 | info_ptr = read_full_die_1 (result_reader, result_comp_unit_die, info_ptr, | |
4579 | result_has_children, num_extra_attrs); | |
4580 | ||
4581 | /* Copy over the attributes from the stub to the DIE we just read in. */ | |
4582 | comp_unit_die = *result_comp_unit_die; | |
4583 | i = comp_unit_die->num_attrs; | |
4584 | if (stmt_list != NULL) | |
4585 | comp_unit_die->attrs[i++] = *stmt_list; | |
4586 | if (low_pc != NULL) | |
4587 | comp_unit_die->attrs[i++] = *low_pc; | |
4588 | if (high_pc != NULL) | |
4589 | comp_unit_die->attrs[i++] = *high_pc; | |
4590 | if (ranges != NULL) | |
4591 | comp_unit_die->attrs[i++] = *ranges; | |
4592 | if (comp_dir != NULL) | |
4593 | comp_unit_die->attrs[i++] = *comp_dir; | |
4594 | comp_unit_die->num_attrs += num_extra_attrs; | |
4595 | ||
4596 | /* Skip dummy compilation units. */ | |
4597 | if (info_ptr >= begin_info_ptr + dwo_unit->length | |
4598 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
4599 | return 0; | |
4600 | ||
4601 | *result_info_ptr = info_ptr; | |
4602 | return 1; | |
4603 | } | |
4604 | ||
4605 | /* Subroutine of init_cutu_and_read_dies to simplify it. | |
4606 | Look up the DWO unit specified by COMP_UNIT_DIE of THIS_CU. | |
4607 | If the specified DWO unit cannot be found an error is thrown. */ | |
4608 | ||
4609 | static struct dwo_unit * | |
4610 | lookup_dwo_unit (struct dwarf2_per_cu_data *this_cu, | |
4611 | struct die_info *comp_unit_die) | |
4612 | { | |
4613 | struct dwarf2_cu *cu = this_cu->cu; | |
4614 | struct attribute *attr; | |
4615 | ULONGEST signature; | |
4616 | struct dwo_unit *dwo_unit; | |
4617 | const char *comp_dir, *dwo_name; | |
4618 | ||
4619 | /* Yeah, we look dwo_name up again, but it simplifies the code. */ | |
4620 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_name, cu); | |
4621 | gdb_assert (attr != NULL); | |
4622 | dwo_name = DW_STRING (attr); | |
4623 | comp_dir = NULL; | |
4624 | attr = dwarf2_attr (comp_unit_die, DW_AT_comp_dir, cu); | |
4625 | if (attr) | |
4626 | comp_dir = DW_STRING (attr); | |
4627 | ||
4628 | if (this_cu->is_debug_types) | |
4629 | { | |
4630 | struct signatured_type *sig_type; | |
4631 | ||
4632 | /* Since this_cu is the first member of struct signatured_type, | |
4633 | we can go from a pointer to one to a pointer to the other. */ | |
4634 | sig_type = (struct signatured_type *) this_cu; | |
4635 | signature = sig_type->signature; | |
4636 | dwo_unit = lookup_dwo_type_unit (sig_type, dwo_name, comp_dir); | |
4637 | } | |
4638 | else | |
4639 | { | |
4640 | struct attribute *attr; | |
4641 | ||
4642 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_id, cu); | |
4643 | if (! attr) | |
4644 | error (_("Dwarf Error: missing dwo_id for dwo_name %s" | |
4645 | " [in module %s]"), | |
4646 | dwo_name, this_cu->objfile->name); | |
4647 | signature = DW_UNSND (attr); | |
4648 | dwo_unit = lookup_dwo_comp_unit (this_cu, dwo_name, comp_dir, | |
4649 | signature); | |
4650 | } | |
4651 | ||
4652 | if (dwo_unit == NULL) | |
4653 | { | |
4654 | error (_("Dwarf Error: CU at offset 0x%x references unknown DWO" | |
4655 | " with ID %s [in module %s]"), | |
4656 | this_cu->offset.sect_off, | |
4657 | phex (signature, sizeof (signature)), | |
4658 | this_cu->objfile->name); | |
4659 | } | |
4660 | ||
4661 | return dwo_unit; | |
4662 | } | |
4663 | ||
fd820528 | 4664 | /* Initialize a CU (or TU) and read its DIEs. |
3019eac3 | 4665 | If the CU defers to a DWO file, read the DWO file as well. |
dee91e82 | 4666 | |
f4dc4d17 DE |
4667 | ABBREV_TABLE, if non-NULL, is the abbreviation table to use. |
4668 | Otherwise the table specified in the comp unit header is read in and used. | |
4669 | This is an optimization for when we already have the abbrev table. | |
4670 | ||
dee91e82 DE |
4671 | If USE_EXISTING_CU is non-zero, and THIS_CU->cu is non-NULL, then use it. |
4672 | Otherwise, a new CU is allocated with xmalloc. | |
4673 | ||
4674 | If KEEP is non-zero, then if we allocated a dwarf2_cu we add it to | |
4675 | read_in_chain. Otherwise the dwarf2_cu data is freed at the end. | |
4676 | ||
4677 | WARNING: If THIS_CU is a "dummy CU" (used as filler by the incremental | |
fd820528 | 4678 | linker) then DIE_READER_FUNC will not get called. */ |
aaa75496 | 4679 | |
70221824 | 4680 | static void |
fd820528 | 4681 | init_cutu_and_read_dies (struct dwarf2_per_cu_data *this_cu, |
f4dc4d17 | 4682 | struct abbrev_table *abbrev_table, |
fd820528 DE |
4683 | int use_existing_cu, int keep, |
4684 | die_reader_func_ftype *die_reader_func, | |
4685 | void *data) | |
c906108c | 4686 | { |
dee91e82 | 4687 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8a0459fd | 4688 | struct dwarf2_section_info *section = this_cu->section; |
3019eac3 | 4689 | bfd *abfd = section->asection->owner; |
dee91e82 DE |
4690 | struct dwarf2_cu *cu; |
4691 | gdb_byte *begin_info_ptr, *info_ptr; | |
4692 | struct die_reader_specs reader; | |
d85a05f0 | 4693 | struct die_info *comp_unit_die; |
dee91e82 | 4694 | int has_children; |
d85a05f0 | 4695 | struct attribute *attr; |
dee91e82 DE |
4696 | struct cleanup *cleanups, *free_cu_cleanup = NULL; |
4697 | struct signatured_type *sig_type = NULL; | |
4bdcc0c1 | 4698 | struct dwarf2_section_info *abbrev_section; |
42e7ad6c DE |
4699 | /* Non-zero if CU currently points to a DWO file and we need to |
4700 | reread it. When this happens we need to reread the skeleton die | |
4701 | before we can reread the DWO file. */ | |
4702 | int rereading_dwo_cu = 0; | |
c906108c | 4703 | |
09406207 DE |
4704 | if (dwarf2_die_debug) |
4705 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset 0x%x\n", | |
4706 | this_cu->is_debug_types ? "type" : "comp", | |
4707 | this_cu->offset.sect_off); | |
4708 | ||
dee91e82 DE |
4709 | if (use_existing_cu) |
4710 | gdb_assert (keep); | |
23745b47 | 4711 | |
dee91e82 DE |
4712 | cleanups = make_cleanup (null_cleanup, NULL); |
4713 | ||
4714 | /* This is cheap if the section is already read in. */ | |
4715 | dwarf2_read_section (objfile, section); | |
4716 | ||
4717 | begin_info_ptr = info_ptr = section->buffer + this_cu->offset.sect_off; | |
36586728 TT |
4718 | |
4719 | abbrev_section = get_abbrev_section_for_cu (this_cu); | |
dee91e82 DE |
4720 | |
4721 | if (use_existing_cu && this_cu->cu != NULL) | |
4722 | { | |
4723 | cu = this_cu->cu; | |
42e7ad6c DE |
4724 | |
4725 | /* If this CU is from a DWO file we need to start over, we need to | |
4726 | refetch the attributes from the skeleton CU. | |
4727 | This could be optimized by retrieving those attributes from when we | |
4728 | were here the first time: the previous comp_unit_die was stored in | |
4729 | comp_unit_obstack. But there's no data yet that we need this | |
4730 | optimization. */ | |
4731 | if (cu->dwo_unit != NULL) | |
4732 | rereading_dwo_cu = 1; | |
dee91e82 DE |
4733 | } |
4734 | else | |
4735 | { | |
4736 | /* If !use_existing_cu, this_cu->cu must be NULL. */ | |
4737 | gdb_assert (this_cu->cu == NULL); | |
4738 | ||
4739 | cu = xmalloc (sizeof (*cu)); | |
4740 | init_one_comp_unit (cu, this_cu); | |
4741 | ||
4742 | /* If an error occurs while loading, release our storage. */ | |
4743 | free_cu_cleanup = make_cleanup (free_heap_comp_unit, cu); | |
42e7ad6c | 4744 | } |
dee91e82 | 4745 | |
b0c7bfa9 | 4746 | /* Get the header. */ |
42e7ad6c DE |
4747 | if (cu->header.first_die_offset.cu_off != 0 && ! rereading_dwo_cu) |
4748 | { | |
4749 | /* We already have the header, there's no need to read it in again. */ | |
4750 | info_ptr += cu->header.first_die_offset.cu_off; | |
4751 | } | |
4752 | else | |
4753 | { | |
3019eac3 | 4754 | if (this_cu->is_debug_types) |
dee91e82 DE |
4755 | { |
4756 | ULONGEST signature; | |
42e7ad6c | 4757 | cu_offset type_offset_in_tu; |
dee91e82 | 4758 | |
4bdcc0c1 DE |
4759 | info_ptr = read_and_check_type_unit_head (&cu->header, section, |
4760 | abbrev_section, info_ptr, | |
42e7ad6c DE |
4761 | &signature, |
4762 | &type_offset_in_tu); | |
dee91e82 | 4763 | |
42e7ad6c DE |
4764 | /* Since per_cu is the first member of struct signatured_type, |
4765 | we can go from a pointer to one to a pointer to the other. */ | |
4766 | sig_type = (struct signatured_type *) this_cu; | |
4767 | gdb_assert (sig_type->signature == signature); | |
4768 | gdb_assert (sig_type->type_offset_in_tu.cu_off | |
4769 | == type_offset_in_tu.cu_off); | |
dee91e82 DE |
4770 | gdb_assert (this_cu->offset.sect_off == cu->header.offset.sect_off); |
4771 | ||
42e7ad6c DE |
4772 | /* LENGTH has not been set yet for type units if we're |
4773 | using .gdb_index. */ | |
1ce1cefd | 4774 | this_cu->length = get_cu_length (&cu->header); |
3019eac3 DE |
4775 | |
4776 | /* Establish the type offset that can be used to lookup the type. */ | |
4777 | sig_type->type_offset_in_section.sect_off = | |
4778 | this_cu->offset.sect_off + sig_type->type_offset_in_tu.cu_off; | |
dee91e82 DE |
4779 | } |
4780 | else | |
4781 | { | |
4bdcc0c1 DE |
4782 | info_ptr = read_and_check_comp_unit_head (&cu->header, section, |
4783 | abbrev_section, | |
4784 | info_ptr, 0); | |
dee91e82 DE |
4785 | |
4786 | gdb_assert (this_cu->offset.sect_off == cu->header.offset.sect_off); | |
1ce1cefd | 4787 | gdb_assert (this_cu->length == get_cu_length (&cu->header)); |
dee91e82 DE |
4788 | } |
4789 | } | |
10b3939b | 4790 | |
6caca83c | 4791 | /* Skip dummy compilation units. */ |
dee91e82 | 4792 | if (info_ptr >= begin_info_ptr + this_cu->length |
6caca83c CC |
4793 | || peek_abbrev_code (abfd, info_ptr) == 0) |
4794 | { | |
dee91e82 | 4795 | do_cleanups (cleanups); |
21b2bd31 | 4796 | return; |
6caca83c CC |
4797 | } |
4798 | ||
433df2d4 DE |
4799 | /* If we don't have them yet, read the abbrevs for this compilation unit. |
4800 | And if we need to read them now, make sure they're freed when we're | |
42e7ad6c DE |
4801 | done. Note that it's important that if the CU had an abbrev table |
4802 | on entry we don't free it when we're done: Somewhere up the call stack | |
4803 | it may be in use. */ | |
f4dc4d17 DE |
4804 | if (abbrev_table != NULL) |
4805 | { | |
4806 | gdb_assert (cu->abbrev_table == NULL); | |
4807 | gdb_assert (cu->header.abbrev_offset.sect_off | |
4808 | == abbrev_table->offset.sect_off); | |
4809 | cu->abbrev_table = abbrev_table; | |
4810 | } | |
4811 | else if (cu->abbrev_table == NULL) | |
dee91e82 | 4812 | { |
4bdcc0c1 | 4813 | dwarf2_read_abbrevs (cu, abbrev_section); |
dee91e82 DE |
4814 | make_cleanup (dwarf2_free_abbrev_table, cu); |
4815 | } | |
42e7ad6c DE |
4816 | else if (rereading_dwo_cu) |
4817 | { | |
4818 | dwarf2_free_abbrev_table (cu); | |
4819 | dwarf2_read_abbrevs (cu, abbrev_section); | |
4820 | } | |
af703f96 | 4821 | |
dee91e82 | 4822 | /* Read the top level CU/TU die. */ |
3019eac3 | 4823 | init_cu_die_reader (&reader, cu, section, NULL); |
dee91e82 | 4824 | info_ptr = read_full_die (&reader, &comp_unit_die, info_ptr, &has_children); |
93311388 | 4825 | |
b0c7bfa9 DE |
4826 | /* If we are in a DWO stub, process it and then read in the "real" CU/TU |
4827 | from the DWO file. | |
4828 | Note that if USE_EXISTING_OK != 0, and THIS_CU->cu already contains a | |
4829 | DWO CU, that this test will fail (the attribute will not be present). */ | |
3019eac3 DE |
4830 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_name, cu); |
4831 | if (attr) | |
4832 | { | |
3019eac3 | 4833 | struct dwo_unit *dwo_unit; |
b0c7bfa9 | 4834 | struct die_info *dwo_comp_unit_die; |
3019eac3 DE |
4835 | |
4836 | if (has_children) | |
4837 | error (_("Dwarf Error: compilation unit with DW_AT_GNU_dwo_name" | |
4838 | " has children (offset 0x%x) [in module %s]"), | |
4839 | this_cu->offset.sect_off, bfd_get_filename (abfd)); | |
b0c7bfa9 DE |
4840 | dwo_unit = lookup_dwo_unit (this_cu, comp_unit_die); |
4841 | if (read_cutu_die_from_dwo (this_cu, dwo_unit, | |
4842 | abbrev_table != NULL, | |
4843 | comp_unit_die, | |
4844 | &reader, &info_ptr, | |
4845 | &dwo_comp_unit_die, &has_children) == 0) | |
3019eac3 | 4846 | { |
b0c7bfa9 | 4847 | /* Dummy die. */ |
3019eac3 DE |
4848 | do_cleanups (cleanups); |
4849 | return; | |
4850 | } | |
b0c7bfa9 | 4851 | comp_unit_die = dwo_comp_unit_die; |
3019eac3 DE |
4852 | } |
4853 | ||
b0c7bfa9 | 4854 | /* All of the above is setup for this call. Yikes. */ |
dee91e82 DE |
4855 | die_reader_func (&reader, info_ptr, comp_unit_die, has_children, data); |
4856 | ||
b0c7bfa9 | 4857 | /* Done, clean up. */ |
dee91e82 | 4858 | if (free_cu_cleanup != NULL) |
348e048f | 4859 | { |
dee91e82 DE |
4860 | if (keep) |
4861 | { | |
4862 | /* We've successfully allocated this compilation unit. Let our | |
4863 | caller clean it up when finished with it. */ | |
4864 | discard_cleanups (free_cu_cleanup); | |
4865 | ||
4866 | /* We can only discard free_cu_cleanup and all subsequent cleanups. | |
4867 | So we have to manually free the abbrev table. */ | |
4868 | dwarf2_free_abbrev_table (cu); | |
4869 | ||
4870 | /* Link this CU into read_in_chain. */ | |
4871 | this_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
4872 | dwarf2_per_objfile->read_in_chain = this_cu; | |
4873 | } | |
4874 | else | |
4875 | do_cleanups (free_cu_cleanup); | |
348e048f | 4876 | } |
dee91e82 DE |
4877 | |
4878 | do_cleanups (cleanups); | |
4879 | } | |
4880 | ||
3019eac3 DE |
4881 | /* Read CU/TU THIS_CU in section SECTION, |
4882 | but do not follow DW_AT_GNU_dwo_name if present. | |
80626a55 DE |
4883 | DWOP_FILE, if non-NULL, is the DWO/DWP file to read (the caller is assumed |
4884 | to have already done the lookup to find the DWO/DWP file). | |
dee91e82 DE |
4885 | |
4886 | The caller is required to fill in THIS_CU->section, THIS_CU->offset, and | |
3019eac3 | 4887 | THIS_CU->is_debug_types, but nothing else. |
dee91e82 DE |
4888 | |
4889 | We fill in THIS_CU->length. | |
4890 | ||
4891 | WARNING: If THIS_CU is a "dummy CU" (used as filler by the incremental | |
4892 | linker) then DIE_READER_FUNC will not get called. | |
4893 | ||
4894 | THIS_CU->cu is always freed when done. | |
3019eac3 DE |
4895 | This is done in order to not leave THIS_CU->cu in a state where we have |
4896 | to care whether it refers to the "main" CU or the DWO CU. */ | |
dee91e82 DE |
4897 | |
4898 | static void | |
4899 | init_cutu_and_read_dies_no_follow (struct dwarf2_per_cu_data *this_cu, | |
4900 | struct dwarf2_section_info *abbrev_section, | |
3019eac3 | 4901 | struct dwo_file *dwo_file, |
dee91e82 DE |
4902 | die_reader_func_ftype *die_reader_func, |
4903 | void *data) | |
4904 | { | |
4905 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
8a0459fd | 4906 | struct dwarf2_section_info *section = this_cu->section; |
3019eac3 | 4907 | bfd *abfd = section->asection->owner; |
dee91e82 DE |
4908 | struct dwarf2_cu cu; |
4909 | gdb_byte *begin_info_ptr, *info_ptr; | |
4910 | struct die_reader_specs reader; | |
4911 | struct cleanup *cleanups; | |
4912 | struct die_info *comp_unit_die; | |
4913 | int has_children; | |
4914 | ||
09406207 DE |
4915 | if (dwarf2_die_debug) |
4916 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset 0x%x\n", | |
4917 | this_cu->is_debug_types ? "type" : "comp", | |
4918 | this_cu->offset.sect_off); | |
4919 | ||
dee91e82 DE |
4920 | gdb_assert (this_cu->cu == NULL); |
4921 | ||
dee91e82 DE |
4922 | /* This is cheap if the section is already read in. */ |
4923 | dwarf2_read_section (objfile, section); | |
4924 | ||
4925 | init_one_comp_unit (&cu, this_cu); | |
4926 | ||
4927 | cleanups = make_cleanup (free_stack_comp_unit, &cu); | |
4928 | ||
4929 | begin_info_ptr = info_ptr = section->buffer + this_cu->offset.sect_off; | |
4bdcc0c1 DE |
4930 | info_ptr = read_and_check_comp_unit_head (&cu.header, section, |
4931 | abbrev_section, info_ptr, | |
3019eac3 | 4932 | this_cu->is_debug_types); |
dee91e82 | 4933 | |
1ce1cefd | 4934 | this_cu->length = get_cu_length (&cu.header); |
dee91e82 DE |
4935 | |
4936 | /* Skip dummy compilation units. */ | |
4937 | if (info_ptr >= begin_info_ptr + this_cu->length | |
4938 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
c906108c | 4939 | { |
dee91e82 | 4940 | do_cleanups (cleanups); |
21b2bd31 | 4941 | return; |
93311388 | 4942 | } |
72bf9492 | 4943 | |
dee91e82 DE |
4944 | dwarf2_read_abbrevs (&cu, abbrev_section); |
4945 | make_cleanup (dwarf2_free_abbrev_table, &cu); | |
4946 | ||
3019eac3 | 4947 | init_cu_die_reader (&reader, &cu, section, dwo_file); |
dee91e82 DE |
4948 | info_ptr = read_full_die (&reader, &comp_unit_die, info_ptr, &has_children); |
4949 | ||
4950 | die_reader_func (&reader, info_ptr, comp_unit_die, has_children, data); | |
4951 | ||
4952 | do_cleanups (cleanups); | |
4953 | } | |
4954 | ||
3019eac3 DE |
4955 | /* Read a CU/TU, except that this does not look for DW_AT_GNU_dwo_name and |
4956 | does not lookup the specified DWO file. | |
4957 | This cannot be used to read DWO files. | |
dee91e82 DE |
4958 | |
4959 | THIS_CU->cu is always freed when done. | |
3019eac3 DE |
4960 | This is done in order to not leave THIS_CU->cu in a state where we have |
4961 | to care whether it refers to the "main" CU or the DWO CU. | |
4962 | We can revisit this if the data shows there's a performance issue. */ | |
dee91e82 DE |
4963 | |
4964 | static void | |
4965 | init_cutu_and_read_dies_simple (struct dwarf2_per_cu_data *this_cu, | |
4966 | die_reader_func_ftype *die_reader_func, | |
4967 | void *data) | |
4968 | { | |
4969 | init_cutu_and_read_dies_no_follow (this_cu, | |
36586728 | 4970 | get_abbrev_section_for_cu (this_cu), |
3019eac3 | 4971 | NULL, |
dee91e82 DE |
4972 | die_reader_func, data); |
4973 | } | |
0018ea6f DE |
4974 | \f |
4975 | /* Type Unit Groups. | |
dee91e82 | 4976 | |
0018ea6f DE |
4977 | Type Unit Groups are a way to collapse the set of all TUs (type units) into |
4978 | a more manageable set. The grouping is done by DW_AT_stmt_list entry | |
4979 | so that all types coming from the same compilation (.o file) are grouped | |
4980 | together. A future step could be to put the types in the same symtab as | |
4981 | the CU the types ultimately came from. */ | |
ff013f42 | 4982 | |
f4dc4d17 DE |
4983 | static hashval_t |
4984 | hash_type_unit_group (const void *item) | |
4985 | { | |
094b34ac | 4986 | const struct type_unit_group *tu_group = item; |
f4dc4d17 | 4987 | |
094b34ac | 4988 | return hash_stmt_list_entry (&tu_group->hash); |
f4dc4d17 | 4989 | } |
348e048f DE |
4990 | |
4991 | static int | |
f4dc4d17 | 4992 | eq_type_unit_group (const void *item_lhs, const void *item_rhs) |
348e048f | 4993 | { |
f4dc4d17 DE |
4994 | const struct type_unit_group *lhs = item_lhs; |
4995 | const struct type_unit_group *rhs = item_rhs; | |
348e048f | 4996 | |
094b34ac | 4997 | return eq_stmt_list_entry (&lhs->hash, &rhs->hash); |
f4dc4d17 | 4998 | } |
348e048f | 4999 | |
f4dc4d17 DE |
5000 | /* Allocate a hash table for type unit groups. */ |
5001 | ||
5002 | static htab_t | |
5003 | allocate_type_unit_groups_table (void) | |
5004 | { | |
5005 | return htab_create_alloc_ex (3, | |
5006 | hash_type_unit_group, | |
5007 | eq_type_unit_group, | |
5008 | NULL, | |
5009 | &dwarf2_per_objfile->objfile->objfile_obstack, | |
5010 | hashtab_obstack_allocate, | |
5011 | dummy_obstack_deallocate); | |
5012 | } | |
dee91e82 | 5013 | |
f4dc4d17 DE |
5014 | /* Type units that don't have DW_AT_stmt_list are grouped into their own |
5015 | partial symtabs. We combine several TUs per psymtab to not let the size | |
5016 | of any one psymtab grow too big. */ | |
5017 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB (1 << 31) | |
5018 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE 10 | |
dee91e82 | 5019 | |
094b34ac | 5020 | /* Helper routine for get_type_unit_group. |
f4dc4d17 DE |
5021 | Create the type_unit_group object used to hold one or more TUs. */ |
5022 | ||
5023 | static struct type_unit_group * | |
094b34ac | 5024 | create_type_unit_group (struct dwarf2_cu *cu, sect_offset line_offset_struct) |
f4dc4d17 DE |
5025 | { |
5026 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
094b34ac | 5027 | struct dwarf2_per_cu_data *per_cu; |
f4dc4d17 | 5028 | struct type_unit_group *tu_group; |
f4dc4d17 DE |
5029 | |
5030 | tu_group = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
5031 | struct type_unit_group); | |
094b34ac | 5032 | per_cu = &tu_group->per_cu; |
f4dc4d17 DE |
5033 | per_cu->objfile = objfile; |
5034 | per_cu->is_debug_types = 1; | |
796a7ff8 | 5035 | per_cu->type_unit_group = tu_group; |
f4dc4d17 | 5036 | |
094b34ac DE |
5037 | if (dwarf2_per_objfile->using_index) |
5038 | { | |
5039 | per_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
5040 | struct dwarf2_per_cu_quick_data); | |
5041 | tu_group->t.first_tu = cu->per_cu; | |
5042 | } | |
5043 | else | |
5044 | { | |
5045 | unsigned int line_offset = line_offset_struct.sect_off; | |
5046 | struct partial_symtab *pst; | |
5047 | char *name; | |
5048 | ||
5049 | /* Give the symtab a useful name for debug purposes. */ | |
5050 | if ((line_offset & NO_STMT_LIST_TYPE_UNIT_PSYMTAB) != 0) | |
5051 | name = xstrprintf ("<type_units_%d>", | |
5052 | (line_offset & ~NO_STMT_LIST_TYPE_UNIT_PSYMTAB)); | |
5053 | else | |
5054 | name = xstrprintf ("<type_units_at_0x%x>", line_offset); | |
5055 | ||
5056 | pst = create_partial_symtab (per_cu, name); | |
5057 | pst->anonymous = 1; | |
f4dc4d17 | 5058 | |
094b34ac DE |
5059 | xfree (name); |
5060 | } | |
f4dc4d17 | 5061 | |
094b34ac DE |
5062 | tu_group->hash.dwo_unit = cu->dwo_unit; |
5063 | tu_group->hash.line_offset = line_offset_struct; | |
f4dc4d17 DE |
5064 | |
5065 | return tu_group; | |
5066 | } | |
5067 | ||
094b34ac DE |
5068 | /* Look up the type_unit_group for type unit CU, and create it if necessary. |
5069 | STMT_LIST is a DW_AT_stmt_list attribute. */ | |
f4dc4d17 DE |
5070 | |
5071 | static struct type_unit_group * | |
094b34ac | 5072 | get_type_unit_group (struct dwarf2_cu *cu, struct attribute *stmt_list) |
f4dc4d17 DE |
5073 | { |
5074 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; | |
5075 | struct type_unit_group *tu_group; | |
5076 | void **slot; | |
5077 | unsigned int line_offset; | |
5078 | struct type_unit_group type_unit_group_for_lookup; | |
5079 | ||
5080 | if (dwarf2_per_objfile->type_unit_groups == NULL) | |
5081 | { | |
5082 | dwarf2_per_objfile->type_unit_groups = | |
5083 | allocate_type_unit_groups_table (); | |
5084 | } | |
5085 | ||
5086 | /* Do we need to create a new group, or can we use an existing one? */ | |
5087 | ||
5088 | if (stmt_list) | |
5089 | { | |
5090 | line_offset = DW_UNSND (stmt_list); | |
5091 | ++tu_stats->nr_symtab_sharers; | |
5092 | } | |
5093 | else | |
5094 | { | |
5095 | /* Ugh, no stmt_list. Rare, but we have to handle it. | |
5096 | We can do various things here like create one group per TU or | |
5097 | spread them over multiple groups to split up the expansion work. | |
5098 | To avoid worst case scenarios (too many groups or too large groups) | |
5099 | we, umm, group them in bunches. */ | |
5100 | line_offset = (NO_STMT_LIST_TYPE_UNIT_PSYMTAB | |
5101 | | (tu_stats->nr_stmt_less_type_units | |
5102 | / NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE)); | |
5103 | ++tu_stats->nr_stmt_less_type_units; | |
5104 | } | |
5105 | ||
094b34ac DE |
5106 | type_unit_group_for_lookup.hash.dwo_unit = cu->dwo_unit; |
5107 | type_unit_group_for_lookup.hash.line_offset.sect_off = line_offset; | |
f4dc4d17 DE |
5108 | slot = htab_find_slot (dwarf2_per_objfile->type_unit_groups, |
5109 | &type_unit_group_for_lookup, INSERT); | |
5110 | if (*slot != NULL) | |
5111 | { | |
5112 | tu_group = *slot; | |
5113 | gdb_assert (tu_group != NULL); | |
5114 | } | |
5115 | else | |
5116 | { | |
5117 | sect_offset line_offset_struct; | |
5118 | ||
5119 | line_offset_struct.sect_off = line_offset; | |
094b34ac | 5120 | tu_group = create_type_unit_group (cu, line_offset_struct); |
f4dc4d17 DE |
5121 | *slot = tu_group; |
5122 | ++tu_stats->nr_symtabs; | |
5123 | } | |
5124 | ||
5125 | return tu_group; | |
5126 | } | |
5127 | ||
5128 | /* Struct used to sort TUs by their abbreviation table offset. */ | |
5129 | ||
5130 | struct tu_abbrev_offset | |
5131 | { | |
5132 | struct signatured_type *sig_type; | |
5133 | sect_offset abbrev_offset; | |
5134 | }; | |
5135 | ||
5136 | /* Helper routine for build_type_unit_groups, passed to qsort. */ | |
5137 | ||
5138 | static int | |
5139 | sort_tu_by_abbrev_offset (const void *ap, const void *bp) | |
5140 | { | |
5141 | const struct tu_abbrev_offset * const *a = ap; | |
5142 | const struct tu_abbrev_offset * const *b = bp; | |
5143 | unsigned int aoff = (*a)->abbrev_offset.sect_off; | |
5144 | unsigned int boff = (*b)->abbrev_offset.sect_off; | |
5145 | ||
5146 | return (aoff > boff) - (aoff < boff); | |
5147 | } | |
5148 | ||
5149 | /* A helper function to add a type_unit_group to a table. */ | |
5150 | ||
5151 | static int | |
5152 | add_type_unit_group_to_table (void **slot, void *datum) | |
5153 | { | |
5154 | struct type_unit_group *tu_group = *slot; | |
5155 | struct type_unit_group ***datap = datum; | |
5156 | ||
5157 | **datap = tu_group; | |
5158 | ++*datap; | |
5159 | ||
5160 | return 1; | |
5161 | } | |
5162 | ||
5163 | /* Efficiently read all the type units, calling init_cutu_and_read_dies on | |
5164 | each one passing FUNC,DATA. | |
5165 | ||
5166 | The efficiency is because we sort TUs by the abbrev table they use and | |
5167 | only read each abbrev table once. In one program there are 200K TUs | |
5168 | sharing 8K abbrev tables. | |
5169 | ||
5170 | The main purpose of this function is to support building the | |
5171 | dwarf2_per_objfile->type_unit_groups table. | |
5172 | TUs typically share the DW_AT_stmt_list of the CU they came from, so we | |
5173 | can collapse the search space by grouping them by stmt_list. | |
5174 | The savings can be significant, in the same program from above the 200K TUs | |
5175 | share 8K stmt_list tables. | |
5176 | ||
5177 | FUNC is expected to call get_type_unit_group, which will create the | |
5178 | struct type_unit_group if necessary and add it to | |
5179 | dwarf2_per_objfile->type_unit_groups. */ | |
5180 | ||
5181 | static void | |
5182 | build_type_unit_groups (die_reader_func_ftype *func, void *data) | |
5183 | { | |
5184 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
5185 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; | |
5186 | struct cleanup *cleanups; | |
5187 | struct abbrev_table *abbrev_table; | |
5188 | sect_offset abbrev_offset; | |
5189 | struct tu_abbrev_offset *sorted_by_abbrev; | |
5190 | struct type_unit_group **iter; | |
5191 | int i; | |
5192 | ||
5193 | /* It's up to the caller to not call us multiple times. */ | |
5194 | gdb_assert (dwarf2_per_objfile->type_unit_groups == NULL); | |
5195 | ||
5196 | if (dwarf2_per_objfile->n_type_units == 0) | |
5197 | return; | |
5198 | ||
5199 | /* TUs typically share abbrev tables, and there can be way more TUs than | |
5200 | abbrev tables. Sort by abbrev table to reduce the number of times we | |
5201 | read each abbrev table in. | |
5202 | Alternatives are to punt or to maintain a cache of abbrev tables. | |
5203 | This is simpler and efficient enough for now. | |
5204 | ||
5205 | Later we group TUs by their DW_AT_stmt_list value (as this defines the | |
5206 | symtab to use). Typically TUs with the same abbrev offset have the same | |
5207 | stmt_list value too so in practice this should work well. | |
5208 | ||
5209 | The basic algorithm here is: | |
5210 | ||
5211 | sort TUs by abbrev table | |
5212 | for each TU with same abbrev table: | |
5213 | read abbrev table if first user | |
5214 | read TU top level DIE | |
5215 | [IWBN if DWO skeletons had DW_AT_stmt_list] | |
5216 | call FUNC */ | |
5217 | ||
5218 | if (dwarf2_read_debug) | |
5219 | fprintf_unfiltered (gdb_stdlog, "Building type unit groups ...\n"); | |
5220 | ||
5221 | /* Sort in a separate table to maintain the order of all_type_units | |
5222 | for .gdb_index: TU indices directly index all_type_units. */ | |
5223 | sorted_by_abbrev = XNEWVEC (struct tu_abbrev_offset, | |
5224 | dwarf2_per_objfile->n_type_units); | |
5225 | for (i = 0; i < dwarf2_per_objfile->n_type_units; ++i) | |
5226 | { | |
5227 | struct signatured_type *sig_type = dwarf2_per_objfile->all_type_units[i]; | |
5228 | ||
5229 | sorted_by_abbrev[i].sig_type = sig_type; | |
5230 | sorted_by_abbrev[i].abbrev_offset = | |
8a0459fd | 5231 | read_abbrev_offset (sig_type->per_cu.section, |
f4dc4d17 DE |
5232 | sig_type->per_cu.offset); |
5233 | } | |
5234 | cleanups = make_cleanup (xfree, sorted_by_abbrev); | |
5235 | qsort (sorted_by_abbrev, dwarf2_per_objfile->n_type_units, | |
5236 | sizeof (struct tu_abbrev_offset), sort_tu_by_abbrev_offset); | |
5237 | ||
094b34ac DE |
5238 | /* Note: In the .gdb_index case, get_type_unit_group may have already been |
5239 | called any number of times, so we don't reset tu_stats here. */ | |
5240 | ||
f4dc4d17 DE |
5241 | abbrev_offset.sect_off = ~(unsigned) 0; |
5242 | abbrev_table = NULL; | |
5243 | make_cleanup (abbrev_table_free_cleanup, &abbrev_table); | |
5244 | ||
5245 | for (i = 0; i < dwarf2_per_objfile->n_type_units; ++i) | |
5246 | { | |
5247 | const struct tu_abbrev_offset *tu = &sorted_by_abbrev[i]; | |
5248 | ||
5249 | /* Switch to the next abbrev table if necessary. */ | |
5250 | if (abbrev_table == NULL | |
5251 | || tu->abbrev_offset.sect_off != abbrev_offset.sect_off) | |
5252 | { | |
5253 | if (abbrev_table != NULL) | |
5254 | { | |
5255 | abbrev_table_free (abbrev_table); | |
5256 | /* Reset to NULL in case abbrev_table_read_table throws | |
5257 | an error: abbrev_table_free_cleanup will get called. */ | |
5258 | abbrev_table = NULL; | |
5259 | } | |
5260 | abbrev_offset = tu->abbrev_offset; | |
5261 | abbrev_table = | |
5262 | abbrev_table_read_table (&dwarf2_per_objfile->abbrev, | |
5263 | abbrev_offset); | |
5264 | ++tu_stats->nr_uniq_abbrev_tables; | |
5265 | } | |
5266 | ||
5267 | init_cutu_and_read_dies (&tu->sig_type->per_cu, abbrev_table, 0, 0, | |
5268 | func, data); | |
5269 | } | |
5270 | ||
5271 | /* Create a vector of pointers to primary type units to make it easy to | |
5272 | iterate over them and CUs. See dw2_get_primary_cu. */ | |
5273 | dwarf2_per_objfile->n_type_unit_groups = | |
5274 | htab_elements (dwarf2_per_objfile->type_unit_groups); | |
5275 | dwarf2_per_objfile->all_type_unit_groups = | |
5276 | obstack_alloc (&objfile->objfile_obstack, | |
5277 | dwarf2_per_objfile->n_type_unit_groups | |
5278 | * sizeof (struct type_unit_group *)); | |
5279 | iter = &dwarf2_per_objfile->all_type_unit_groups[0]; | |
5280 | htab_traverse_noresize (dwarf2_per_objfile->type_unit_groups, | |
5281 | add_type_unit_group_to_table, &iter); | |
5282 | gdb_assert (iter - &dwarf2_per_objfile->all_type_unit_groups[0] | |
5283 | == dwarf2_per_objfile->n_type_unit_groups); | |
5284 | ||
5285 | do_cleanups (cleanups); | |
5286 | ||
5287 | if (dwarf2_read_debug) | |
5288 | { | |
5289 | fprintf_unfiltered (gdb_stdlog, "Done building type unit groups:\n"); | |
5290 | fprintf_unfiltered (gdb_stdlog, " %d TUs\n", | |
5291 | dwarf2_per_objfile->n_type_units); | |
5292 | fprintf_unfiltered (gdb_stdlog, " %d uniq abbrev tables\n", | |
5293 | tu_stats->nr_uniq_abbrev_tables); | |
5294 | fprintf_unfiltered (gdb_stdlog, " %d symtabs from stmt_list entries\n", | |
5295 | tu_stats->nr_symtabs); | |
5296 | fprintf_unfiltered (gdb_stdlog, " %d symtab sharers\n", | |
5297 | tu_stats->nr_symtab_sharers); | |
5298 | fprintf_unfiltered (gdb_stdlog, " %d type units without a stmt_list\n", | |
5299 | tu_stats->nr_stmt_less_type_units); | |
5300 | } | |
5301 | } | |
0018ea6f DE |
5302 | \f |
5303 | /* Partial symbol tables. */ | |
5304 | ||
5305 | /* Create a psymtab named NAME and assign it to PER_CU. | |
5306 | ||
5307 | The caller must fill in the following details: | |
5308 | dirname, textlow, texthigh. */ | |
5309 | ||
5310 | static struct partial_symtab * | |
5311 | create_partial_symtab (struct dwarf2_per_cu_data *per_cu, const char *name) | |
5312 | { | |
5313 | struct objfile *objfile = per_cu->objfile; | |
5314 | struct partial_symtab *pst; | |
5315 | ||
5316 | pst = start_psymtab_common (objfile, objfile->section_offsets, | |
5317 | name, 0, | |
5318 | objfile->global_psymbols.next, | |
5319 | objfile->static_psymbols.next); | |
5320 | ||
5321 | pst->psymtabs_addrmap_supported = 1; | |
5322 | ||
5323 | /* This is the glue that links PST into GDB's symbol API. */ | |
5324 | pst->read_symtab_private = per_cu; | |
5325 | pst->read_symtab = dwarf2_read_symtab; | |
5326 | per_cu->v.psymtab = pst; | |
5327 | ||
5328 | return pst; | |
5329 | } | |
5330 | ||
5331 | /* die_reader_func for process_psymtab_comp_unit. */ | |
5332 | ||
5333 | static void | |
5334 | process_psymtab_comp_unit_reader (const struct die_reader_specs *reader, | |
5335 | gdb_byte *info_ptr, | |
5336 | struct die_info *comp_unit_die, | |
5337 | int has_children, | |
5338 | void *data) | |
5339 | { | |
5340 | struct dwarf2_cu *cu = reader->cu; | |
5341 | struct objfile *objfile = cu->objfile; | |
5342 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; | |
5343 | struct attribute *attr; | |
5344 | CORE_ADDR baseaddr; | |
5345 | CORE_ADDR best_lowpc = 0, best_highpc = 0; | |
5346 | struct partial_symtab *pst; | |
5347 | int has_pc_info; | |
5348 | const char *filename; | |
5349 | int *want_partial_unit_ptr = data; | |
5350 | ||
5351 | if (comp_unit_die->tag == DW_TAG_partial_unit | |
5352 | && (want_partial_unit_ptr == NULL | |
5353 | || !*want_partial_unit_ptr)) | |
5354 | return; | |
5355 | ||
5356 | gdb_assert (! per_cu->is_debug_types); | |
5357 | ||
5358 | prepare_one_comp_unit (cu, comp_unit_die, language_minimal); | |
5359 | ||
5360 | cu->list_in_scope = &file_symbols; | |
5361 | ||
5362 | /* Allocate a new partial symbol table structure. */ | |
5363 | attr = dwarf2_attr (comp_unit_die, DW_AT_name, cu); | |
5364 | if (attr == NULL || !DW_STRING (attr)) | |
5365 | filename = ""; | |
5366 | else | |
5367 | filename = DW_STRING (attr); | |
5368 | ||
5369 | pst = create_partial_symtab (per_cu, filename); | |
5370 | ||
5371 | /* This must be done before calling dwarf2_build_include_psymtabs. */ | |
5372 | attr = dwarf2_attr (comp_unit_die, DW_AT_comp_dir, cu); | |
5373 | if (attr != NULL) | |
5374 | pst->dirname = DW_STRING (attr); | |
5375 | ||
5376 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
5377 | ||
5378 | dwarf2_find_base_address (comp_unit_die, cu); | |
5379 | ||
5380 | /* Possibly set the default values of LOWPC and HIGHPC from | |
5381 | `DW_AT_ranges'. */ | |
5382 | has_pc_info = dwarf2_get_pc_bounds (comp_unit_die, &best_lowpc, | |
5383 | &best_highpc, cu, pst); | |
5384 | if (has_pc_info == 1 && best_lowpc < best_highpc) | |
5385 | /* Store the contiguous range if it is not empty; it can be empty for | |
5386 | CUs with no code. */ | |
5387 | addrmap_set_empty (objfile->psymtabs_addrmap, | |
5388 | best_lowpc + baseaddr, | |
5389 | best_highpc + baseaddr - 1, pst); | |
5390 | ||
5391 | /* Check if comp unit has_children. | |
5392 | If so, read the rest of the partial symbols from this comp unit. | |
5393 | If not, there's no more debug_info for this comp unit. */ | |
5394 | if (has_children) | |
5395 | { | |
5396 | struct partial_die_info *first_die; | |
5397 | CORE_ADDR lowpc, highpc; | |
5398 | ||
5399 | lowpc = ((CORE_ADDR) -1); | |
5400 | highpc = ((CORE_ADDR) 0); | |
5401 | ||
5402 | first_die = load_partial_dies (reader, info_ptr, 1); | |
5403 | ||
5404 | scan_partial_symbols (first_die, &lowpc, &highpc, | |
5405 | ! has_pc_info, cu); | |
5406 | ||
5407 | /* If we didn't find a lowpc, set it to highpc to avoid | |
5408 | complaints from `maint check'. */ | |
5409 | if (lowpc == ((CORE_ADDR) -1)) | |
5410 | lowpc = highpc; | |
5411 | ||
5412 | /* If the compilation unit didn't have an explicit address range, | |
5413 | then use the information extracted from its child dies. */ | |
5414 | if (! has_pc_info) | |
5415 | { | |
5416 | best_lowpc = lowpc; | |
5417 | best_highpc = highpc; | |
5418 | } | |
5419 | } | |
5420 | pst->textlow = best_lowpc + baseaddr; | |
5421 | pst->texthigh = best_highpc + baseaddr; | |
5422 | ||
5423 | pst->n_global_syms = objfile->global_psymbols.next - | |
5424 | (objfile->global_psymbols.list + pst->globals_offset); | |
5425 | pst->n_static_syms = objfile->static_psymbols.next - | |
5426 | (objfile->static_psymbols.list + pst->statics_offset); | |
5427 | sort_pst_symbols (objfile, pst); | |
5428 | ||
5429 | if (!VEC_empty (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs)) | |
5430 | { | |
5431 | int i; | |
5432 | int len = VEC_length (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs); | |
5433 | struct dwarf2_per_cu_data *iter; | |
5434 | ||
5435 | /* Fill in 'dependencies' here; we fill in 'users' in a | |
5436 | post-pass. */ | |
5437 | pst->number_of_dependencies = len; | |
5438 | pst->dependencies = obstack_alloc (&objfile->objfile_obstack, | |
5439 | len * sizeof (struct symtab *)); | |
5440 | for (i = 0; | |
5441 | VEC_iterate (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs, | |
5442 | i, iter); | |
5443 | ++i) | |
5444 | pst->dependencies[i] = iter->v.psymtab; | |
5445 | ||
5446 | VEC_free (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs); | |
5447 | } | |
5448 | ||
5449 | /* Get the list of files included in the current compilation unit, | |
5450 | and build a psymtab for each of them. */ | |
5451 | dwarf2_build_include_psymtabs (cu, comp_unit_die, pst); | |
5452 | ||
5453 | if (dwarf2_read_debug) | |
5454 | { | |
5455 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
5456 | ||
5457 | fprintf_unfiltered (gdb_stdlog, | |
5458 | "Psymtab for %s unit @0x%x: %s - %s" | |
5459 | ", %d global, %d static syms\n", | |
5460 | per_cu->is_debug_types ? "type" : "comp", | |
5461 | per_cu->offset.sect_off, | |
5462 | paddress (gdbarch, pst->textlow), | |
5463 | paddress (gdbarch, pst->texthigh), | |
5464 | pst->n_global_syms, pst->n_static_syms); | |
5465 | } | |
5466 | } | |
5467 | ||
5468 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
5469 | Process compilation unit THIS_CU for a psymtab. */ | |
5470 | ||
5471 | static void | |
5472 | process_psymtab_comp_unit (struct dwarf2_per_cu_data *this_cu, | |
5473 | int want_partial_unit) | |
5474 | { | |
5475 | /* If this compilation unit was already read in, free the | |
5476 | cached copy in order to read it in again. This is | |
5477 | necessary because we skipped some symbols when we first | |
5478 | read in the compilation unit (see load_partial_dies). | |
5479 | This problem could be avoided, but the benefit is unclear. */ | |
5480 | if (this_cu->cu != NULL) | |
5481 | free_one_cached_comp_unit (this_cu); | |
5482 | ||
5483 | gdb_assert (! this_cu->is_debug_types); | |
5484 | init_cutu_and_read_dies (this_cu, NULL, 0, 0, | |
5485 | process_psymtab_comp_unit_reader, | |
5486 | &want_partial_unit); | |
5487 | ||
5488 | /* Age out any secondary CUs. */ | |
5489 | age_cached_comp_units (); | |
5490 | } | |
f4dc4d17 DE |
5491 | |
5492 | /* Reader function for build_type_psymtabs. */ | |
5493 | ||
5494 | static void | |
5495 | build_type_psymtabs_reader (const struct die_reader_specs *reader, | |
5496 | gdb_byte *info_ptr, | |
5497 | struct die_info *type_unit_die, | |
5498 | int has_children, | |
5499 | void *data) | |
5500 | { | |
5501 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
5502 | struct dwarf2_cu *cu = reader->cu; | |
5503 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; | |
5504 | struct type_unit_group *tu_group; | |
5505 | struct attribute *attr; | |
5506 | struct partial_die_info *first_die; | |
5507 | CORE_ADDR lowpc, highpc; | |
5508 | struct partial_symtab *pst; | |
5509 | ||
5510 | gdb_assert (data == NULL); | |
5511 | ||
5512 | if (! has_children) | |
5513 | return; | |
5514 | ||
5515 | attr = dwarf2_attr_no_follow (type_unit_die, DW_AT_stmt_list); | |
094b34ac | 5516 | tu_group = get_type_unit_group (cu, attr); |
f4dc4d17 | 5517 | |
094b34ac | 5518 | VEC_safe_push (dwarf2_per_cu_ptr, tu_group->t.tus, per_cu); |
f4dc4d17 DE |
5519 | |
5520 | prepare_one_comp_unit (cu, type_unit_die, language_minimal); | |
5521 | cu->list_in_scope = &file_symbols; | |
5522 | pst = create_partial_symtab (per_cu, ""); | |
5523 | pst->anonymous = 1; | |
5524 | ||
5525 | first_die = load_partial_dies (reader, info_ptr, 1); | |
5526 | ||
5527 | lowpc = (CORE_ADDR) -1; | |
5528 | highpc = (CORE_ADDR) 0; | |
5529 | scan_partial_symbols (first_die, &lowpc, &highpc, 0, cu); | |
5530 | ||
5531 | pst->n_global_syms = objfile->global_psymbols.next - | |
5532 | (objfile->global_psymbols.list + pst->globals_offset); | |
5533 | pst->n_static_syms = objfile->static_psymbols.next - | |
5534 | (objfile->static_psymbols.list + pst->statics_offset); | |
5c80ed9d | 5535 | sort_pst_symbols (objfile, pst); |
f4dc4d17 DE |
5536 | } |
5537 | ||
5538 | /* Traversal function for build_type_psymtabs. */ | |
5539 | ||
5540 | static int | |
5541 | build_type_psymtab_dependencies (void **slot, void *info) | |
5542 | { | |
5543 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
5544 | struct type_unit_group *tu_group = (struct type_unit_group *) *slot; | |
094b34ac | 5545 | struct dwarf2_per_cu_data *per_cu = &tu_group->per_cu; |
f4dc4d17 | 5546 | struct partial_symtab *pst = per_cu->v.psymtab; |
094b34ac | 5547 | int len = VEC_length (dwarf2_per_cu_ptr, tu_group->t.tus); |
f4dc4d17 DE |
5548 | struct dwarf2_per_cu_data *iter; |
5549 | int i; | |
5550 | ||
5551 | gdb_assert (len > 0); | |
5552 | ||
5553 | pst->number_of_dependencies = len; | |
5554 | pst->dependencies = obstack_alloc (&objfile->objfile_obstack, | |
5555 | len * sizeof (struct psymtab *)); | |
5556 | for (i = 0; | |
094b34ac | 5557 | VEC_iterate (dwarf2_per_cu_ptr, tu_group->t.tus, i, iter); |
f4dc4d17 DE |
5558 | ++i) |
5559 | { | |
5560 | pst->dependencies[i] = iter->v.psymtab; | |
796a7ff8 | 5561 | iter->type_unit_group = tu_group; |
f4dc4d17 DE |
5562 | } |
5563 | ||
094b34ac | 5564 | VEC_free (dwarf2_per_cu_ptr, tu_group->t.tus); |
348e048f DE |
5565 | |
5566 | return 1; | |
5567 | } | |
5568 | ||
5569 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
5570 | Build partial symbol tables for the .debug_types comp-units. */ | |
5571 | ||
5572 | static void | |
5573 | build_type_psymtabs (struct objfile *objfile) | |
5574 | { | |
0e50663e | 5575 | if (! create_all_type_units (objfile)) |
348e048f DE |
5576 | return; |
5577 | ||
f4dc4d17 DE |
5578 | build_type_unit_groups (build_type_psymtabs_reader, NULL); |
5579 | ||
5580 | /* Now that all TUs have been processed we can fill in the dependencies. */ | |
5581 | htab_traverse_noresize (dwarf2_per_objfile->type_unit_groups, | |
5582 | build_type_psymtab_dependencies, NULL); | |
348e048f DE |
5583 | } |
5584 | ||
60606b2c TT |
5585 | /* A cleanup function that clears objfile's psymtabs_addrmap field. */ |
5586 | ||
5587 | static void | |
5588 | psymtabs_addrmap_cleanup (void *o) | |
5589 | { | |
5590 | struct objfile *objfile = o; | |
ec61707d | 5591 | |
60606b2c TT |
5592 | objfile->psymtabs_addrmap = NULL; |
5593 | } | |
5594 | ||
95554aad TT |
5595 | /* Compute the 'user' field for each psymtab in OBJFILE. */ |
5596 | ||
5597 | static void | |
5598 | set_partial_user (struct objfile *objfile) | |
5599 | { | |
5600 | int i; | |
5601 | ||
5602 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) | |
5603 | { | |
5604 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); | |
5605 | struct partial_symtab *pst = per_cu->v.psymtab; | |
5606 | int j; | |
5607 | ||
36586728 TT |
5608 | if (pst == NULL) |
5609 | continue; | |
5610 | ||
95554aad TT |
5611 | for (j = 0; j < pst->number_of_dependencies; ++j) |
5612 | { | |
5613 | /* Set the 'user' field only if it is not already set. */ | |
5614 | if (pst->dependencies[j]->user == NULL) | |
5615 | pst->dependencies[j]->user = pst; | |
5616 | } | |
5617 | } | |
5618 | } | |
5619 | ||
93311388 DE |
5620 | /* Build the partial symbol table by doing a quick pass through the |
5621 | .debug_info and .debug_abbrev sections. */ | |
72bf9492 | 5622 | |
93311388 | 5623 | static void |
c67a9c90 | 5624 | dwarf2_build_psymtabs_hard (struct objfile *objfile) |
93311388 | 5625 | { |
60606b2c TT |
5626 | struct cleanup *back_to, *addrmap_cleanup; |
5627 | struct obstack temp_obstack; | |
21b2bd31 | 5628 | int i; |
93311388 | 5629 | |
45cfd468 DE |
5630 | if (dwarf2_read_debug) |
5631 | { | |
5632 | fprintf_unfiltered (gdb_stdlog, "Building psymtabs of objfile %s ...\n", | |
5633 | objfile->name); | |
5634 | } | |
5635 | ||
98bfdba5 PA |
5636 | dwarf2_per_objfile->reading_partial_symbols = 1; |
5637 | ||
be391dca | 5638 | dwarf2_read_section (objfile, &dwarf2_per_objfile->info); |
91c24f0a | 5639 | |
93311388 DE |
5640 | /* Any cached compilation units will be linked by the per-objfile |
5641 | read_in_chain. Make sure to free them when we're done. */ | |
5642 | back_to = make_cleanup (free_cached_comp_units, NULL); | |
72bf9492 | 5643 | |
348e048f DE |
5644 | build_type_psymtabs (objfile); |
5645 | ||
93311388 | 5646 | create_all_comp_units (objfile); |
c906108c | 5647 | |
60606b2c TT |
5648 | /* Create a temporary address map on a temporary obstack. We later |
5649 | copy this to the final obstack. */ | |
5650 | obstack_init (&temp_obstack); | |
5651 | make_cleanup_obstack_free (&temp_obstack); | |
5652 | objfile->psymtabs_addrmap = addrmap_create_mutable (&temp_obstack); | |
5653 | addrmap_cleanup = make_cleanup (psymtabs_addrmap_cleanup, objfile); | |
72bf9492 | 5654 | |
21b2bd31 | 5655 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
93311388 | 5656 | { |
21b2bd31 | 5657 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
aaa75496 | 5658 | |
95554aad | 5659 | process_psymtab_comp_unit (per_cu, 0); |
c906108c | 5660 | } |
ff013f42 | 5661 | |
95554aad TT |
5662 | set_partial_user (objfile); |
5663 | ||
ff013f42 JK |
5664 | objfile->psymtabs_addrmap = addrmap_create_fixed (objfile->psymtabs_addrmap, |
5665 | &objfile->objfile_obstack); | |
60606b2c | 5666 | discard_cleanups (addrmap_cleanup); |
ff013f42 | 5667 | |
ae038cb0 | 5668 | do_cleanups (back_to); |
45cfd468 DE |
5669 | |
5670 | if (dwarf2_read_debug) | |
5671 | fprintf_unfiltered (gdb_stdlog, "Done building psymtabs of %s\n", | |
5672 | objfile->name); | |
ae038cb0 DJ |
5673 | } |
5674 | ||
3019eac3 | 5675 | /* die_reader_func for load_partial_comp_unit. */ |
ae038cb0 DJ |
5676 | |
5677 | static void | |
dee91e82 DE |
5678 | load_partial_comp_unit_reader (const struct die_reader_specs *reader, |
5679 | gdb_byte *info_ptr, | |
5680 | struct die_info *comp_unit_die, | |
5681 | int has_children, | |
5682 | void *data) | |
ae038cb0 | 5683 | { |
dee91e82 | 5684 | struct dwarf2_cu *cu = reader->cu; |
ae038cb0 | 5685 | |
95554aad | 5686 | prepare_one_comp_unit (cu, comp_unit_die, language_minimal); |
ae038cb0 | 5687 | |
ae038cb0 DJ |
5688 | /* Check if comp unit has_children. |
5689 | If so, read the rest of the partial symbols from this comp unit. | |
0963b4bd | 5690 | If not, there's no more debug_info for this comp unit. */ |
d85a05f0 | 5691 | if (has_children) |
dee91e82 DE |
5692 | load_partial_dies (reader, info_ptr, 0); |
5693 | } | |
98bfdba5 | 5694 | |
dee91e82 DE |
5695 | /* Load the partial DIEs for a secondary CU into memory. |
5696 | This is also used when rereading a primary CU with load_all_dies. */ | |
c5b7e1cb | 5697 | |
dee91e82 DE |
5698 | static void |
5699 | load_partial_comp_unit (struct dwarf2_per_cu_data *this_cu) | |
5700 | { | |
f4dc4d17 DE |
5701 | init_cutu_and_read_dies (this_cu, NULL, 1, 1, |
5702 | load_partial_comp_unit_reader, NULL); | |
ae038cb0 DJ |
5703 | } |
5704 | ||
ae038cb0 | 5705 | static void |
36586728 TT |
5706 | read_comp_units_from_section (struct objfile *objfile, |
5707 | struct dwarf2_section_info *section, | |
5708 | unsigned int is_dwz, | |
5709 | int *n_allocated, | |
5710 | int *n_comp_units, | |
5711 | struct dwarf2_per_cu_data ***all_comp_units) | |
ae038cb0 | 5712 | { |
be391dca | 5713 | gdb_byte *info_ptr; |
36586728 | 5714 | bfd *abfd = section->asection->owner; |
be391dca | 5715 | |
36586728 | 5716 | dwarf2_read_section (objfile, section); |
ae038cb0 | 5717 | |
36586728 | 5718 | info_ptr = section->buffer; |
6e70227d | 5719 | |
36586728 | 5720 | while (info_ptr < section->buffer + section->size) |
ae038cb0 | 5721 | { |
c764a876 | 5722 | unsigned int length, initial_length_size; |
ae038cb0 | 5723 | struct dwarf2_per_cu_data *this_cu; |
b64f50a1 | 5724 | sect_offset offset; |
ae038cb0 | 5725 | |
36586728 | 5726 | offset.sect_off = info_ptr - section->buffer; |
ae038cb0 DJ |
5727 | |
5728 | /* Read just enough information to find out where the next | |
5729 | compilation unit is. */ | |
36586728 | 5730 | length = read_initial_length (abfd, info_ptr, &initial_length_size); |
ae038cb0 DJ |
5731 | |
5732 | /* Save the compilation unit for later lookup. */ | |
5733 | this_cu = obstack_alloc (&objfile->objfile_obstack, | |
5734 | sizeof (struct dwarf2_per_cu_data)); | |
5735 | memset (this_cu, 0, sizeof (*this_cu)); | |
5736 | this_cu->offset = offset; | |
c764a876 | 5737 | this_cu->length = length + initial_length_size; |
36586728 | 5738 | this_cu->is_dwz = is_dwz; |
9291a0cd | 5739 | this_cu->objfile = objfile; |
8a0459fd | 5740 | this_cu->section = section; |
ae038cb0 | 5741 | |
36586728 | 5742 | if (*n_comp_units == *n_allocated) |
ae038cb0 | 5743 | { |
36586728 TT |
5744 | *n_allocated *= 2; |
5745 | *all_comp_units = xrealloc (*all_comp_units, | |
5746 | *n_allocated | |
5747 | * sizeof (struct dwarf2_per_cu_data *)); | |
ae038cb0 | 5748 | } |
36586728 TT |
5749 | (*all_comp_units)[*n_comp_units] = this_cu; |
5750 | ++*n_comp_units; | |
ae038cb0 DJ |
5751 | |
5752 | info_ptr = info_ptr + this_cu->length; | |
5753 | } | |
36586728 TT |
5754 | } |
5755 | ||
5756 | /* Create a list of all compilation units in OBJFILE. | |
5757 | This is only done for -readnow and building partial symtabs. */ | |
5758 | ||
5759 | static void | |
5760 | create_all_comp_units (struct objfile *objfile) | |
5761 | { | |
5762 | int n_allocated; | |
5763 | int n_comp_units; | |
5764 | struct dwarf2_per_cu_data **all_comp_units; | |
5765 | ||
5766 | n_comp_units = 0; | |
5767 | n_allocated = 10; | |
5768 | all_comp_units = xmalloc (n_allocated | |
5769 | * sizeof (struct dwarf2_per_cu_data *)); | |
5770 | ||
5771 | read_comp_units_from_section (objfile, &dwarf2_per_objfile->info, 0, | |
5772 | &n_allocated, &n_comp_units, &all_comp_units); | |
5773 | ||
5774 | if (bfd_get_section_by_name (objfile->obfd, ".gnu_debugaltlink") != NULL) | |
5775 | { | |
5776 | struct dwz_file *dwz = dwarf2_get_dwz_file (); | |
5777 | ||
5778 | read_comp_units_from_section (objfile, &dwz->info, 1, | |
5779 | &n_allocated, &n_comp_units, | |
5780 | &all_comp_units); | |
5781 | } | |
ae038cb0 DJ |
5782 | |
5783 | dwarf2_per_objfile->all_comp_units | |
5784 | = obstack_alloc (&objfile->objfile_obstack, | |
5785 | n_comp_units * sizeof (struct dwarf2_per_cu_data *)); | |
5786 | memcpy (dwarf2_per_objfile->all_comp_units, all_comp_units, | |
5787 | n_comp_units * sizeof (struct dwarf2_per_cu_data *)); | |
5788 | xfree (all_comp_units); | |
5789 | dwarf2_per_objfile->n_comp_units = n_comp_units; | |
c906108c SS |
5790 | } |
5791 | ||
5734ee8b DJ |
5792 | /* Process all loaded DIEs for compilation unit CU, starting at |
5793 | FIRST_DIE. The caller should pass NEED_PC == 1 if the compilation | |
5794 | unit DIE did not have PC info (DW_AT_low_pc and DW_AT_high_pc, or | |
5795 | DW_AT_ranges). If NEED_PC is set, then this function will set | |
5796 | *LOWPC and *HIGHPC to the lowest and highest PC values found in CU | |
5797 | and record the covered ranges in the addrmap. */ | |
c906108c | 5798 | |
72bf9492 DJ |
5799 | static void |
5800 | scan_partial_symbols (struct partial_die_info *first_die, CORE_ADDR *lowpc, | |
5734ee8b | 5801 | CORE_ADDR *highpc, int need_pc, struct dwarf2_cu *cu) |
c906108c | 5802 | { |
72bf9492 | 5803 | struct partial_die_info *pdi; |
c906108c | 5804 | |
91c24f0a DC |
5805 | /* Now, march along the PDI's, descending into ones which have |
5806 | interesting children but skipping the children of the other ones, | |
5807 | until we reach the end of the compilation unit. */ | |
c906108c | 5808 | |
72bf9492 | 5809 | pdi = first_die; |
91c24f0a | 5810 | |
72bf9492 DJ |
5811 | while (pdi != NULL) |
5812 | { | |
5813 | fixup_partial_die (pdi, cu); | |
c906108c | 5814 | |
f55ee35c | 5815 | /* Anonymous namespaces or modules have no name but have interesting |
91c24f0a DC |
5816 | children, so we need to look at them. Ditto for anonymous |
5817 | enums. */ | |
933c6fe4 | 5818 | |
72bf9492 | 5819 | if (pdi->name != NULL || pdi->tag == DW_TAG_namespace |
95554aad TT |
5820 | || pdi->tag == DW_TAG_module || pdi->tag == DW_TAG_enumeration_type |
5821 | || pdi->tag == DW_TAG_imported_unit) | |
c906108c | 5822 | { |
72bf9492 | 5823 | switch (pdi->tag) |
c906108c SS |
5824 | { |
5825 | case DW_TAG_subprogram: | |
5734ee8b | 5826 | add_partial_subprogram (pdi, lowpc, highpc, need_pc, cu); |
c906108c | 5827 | break; |
72929c62 | 5828 | case DW_TAG_constant: |
c906108c SS |
5829 | case DW_TAG_variable: |
5830 | case DW_TAG_typedef: | |
91c24f0a | 5831 | case DW_TAG_union_type: |
72bf9492 | 5832 | if (!pdi->is_declaration) |
63d06c5c | 5833 | { |
72bf9492 | 5834 | add_partial_symbol (pdi, cu); |
63d06c5c DC |
5835 | } |
5836 | break; | |
c906108c | 5837 | case DW_TAG_class_type: |
680b30c7 | 5838 | case DW_TAG_interface_type: |
c906108c | 5839 | case DW_TAG_structure_type: |
72bf9492 | 5840 | if (!pdi->is_declaration) |
c906108c | 5841 | { |
72bf9492 | 5842 | add_partial_symbol (pdi, cu); |
c906108c SS |
5843 | } |
5844 | break; | |
91c24f0a | 5845 | case DW_TAG_enumeration_type: |
72bf9492 DJ |
5846 | if (!pdi->is_declaration) |
5847 | add_partial_enumeration (pdi, cu); | |
c906108c SS |
5848 | break; |
5849 | case DW_TAG_base_type: | |
a02abb62 | 5850 | case DW_TAG_subrange_type: |
c906108c | 5851 | /* File scope base type definitions are added to the partial |
c5aa993b | 5852 | symbol table. */ |
72bf9492 | 5853 | add_partial_symbol (pdi, cu); |
c906108c | 5854 | break; |
d9fa45fe | 5855 | case DW_TAG_namespace: |
5734ee8b | 5856 | add_partial_namespace (pdi, lowpc, highpc, need_pc, cu); |
91c24f0a | 5857 | break; |
5d7cb8df JK |
5858 | case DW_TAG_module: |
5859 | add_partial_module (pdi, lowpc, highpc, need_pc, cu); | |
5860 | break; | |
95554aad TT |
5861 | case DW_TAG_imported_unit: |
5862 | { | |
5863 | struct dwarf2_per_cu_data *per_cu; | |
5864 | ||
f4dc4d17 DE |
5865 | /* For now we don't handle imported units in type units. */ |
5866 | if (cu->per_cu->is_debug_types) | |
5867 | { | |
5868 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
5869 | " supported in type units [in module %s]"), | |
5870 | cu->objfile->name); | |
5871 | } | |
5872 | ||
95554aad | 5873 | per_cu = dwarf2_find_containing_comp_unit (pdi->d.offset, |
36586728 | 5874 | pdi->is_dwz, |
95554aad TT |
5875 | cu->objfile); |
5876 | ||
5877 | /* Go read the partial unit, if needed. */ | |
5878 | if (per_cu->v.psymtab == NULL) | |
5879 | process_psymtab_comp_unit (per_cu, 1); | |
5880 | ||
f4dc4d17 | 5881 | VEC_safe_push (dwarf2_per_cu_ptr, |
796a7ff8 | 5882 | cu->per_cu->imported_symtabs, per_cu); |
95554aad TT |
5883 | } |
5884 | break; | |
c906108c SS |
5885 | default: |
5886 | break; | |
5887 | } | |
5888 | } | |
5889 | ||
72bf9492 DJ |
5890 | /* If the die has a sibling, skip to the sibling. */ |
5891 | ||
5892 | pdi = pdi->die_sibling; | |
5893 | } | |
5894 | } | |
5895 | ||
5896 | /* Functions used to compute the fully scoped name of a partial DIE. | |
91c24f0a | 5897 | |
72bf9492 | 5898 | Normally, this is simple. For C++, the parent DIE's fully scoped |
987504bb JJ |
5899 | name is concatenated with "::" and the partial DIE's name. For |
5900 | Java, the same thing occurs except that "." is used instead of "::". | |
72bf9492 DJ |
5901 | Enumerators are an exception; they use the scope of their parent |
5902 | enumeration type, i.e. the name of the enumeration type is not | |
5903 | prepended to the enumerator. | |
91c24f0a | 5904 | |
72bf9492 DJ |
5905 | There are two complexities. One is DW_AT_specification; in this |
5906 | case "parent" means the parent of the target of the specification, | |
5907 | instead of the direct parent of the DIE. The other is compilers | |
5908 | which do not emit DW_TAG_namespace; in this case we try to guess | |
5909 | the fully qualified name of structure types from their members' | |
5910 | linkage names. This must be done using the DIE's children rather | |
5911 | than the children of any DW_AT_specification target. We only need | |
5912 | to do this for structures at the top level, i.e. if the target of | |
5913 | any DW_AT_specification (if any; otherwise the DIE itself) does not | |
5914 | have a parent. */ | |
5915 | ||
5916 | /* Compute the scope prefix associated with PDI's parent, in | |
5917 | compilation unit CU. The result will be allocated on CU's | |
5918 | comp_unit_obstack, or a copy of the already allocated PDI->NAME | |
5919 | field. NULL is returned if no prefix is necessary. */ | |
15d034d0 | 5920 | static const char * |
72bf9492 DJ |
5921 | partial_die_parent_scope (struct partial_die_info *pdi, |
5922 | struct dwarf2_cu *cu) | |
5923 | { | |
15d034d0 | 5924 | const char *grandparent_scope; |
72bf9492 | 5925 | struct partial_die_info *parent, *real_pdi; |
91c24f0a | 5926 | |
72bf9492 DJ |
5927 | /* We need to look at our parent DIE; if we have a DW_AT_specification, |
5928 | then this means the parent of the specification DIE. */ | |
5929 | ||
5930 | real_pdi = pdi; | |
72bf9492 | 5931 | while (real_pdi->has_specification) |
36586728 TT |
5932 | real_pdi = find_partial_die (real_pdi->spec_offset, |
5933 | real_pdi->spec_is_dwz, cu); | |
72bf9492 DJ |
5934 | |
5935 | parent = real_pdi->die_parent; | |
5936 | if (parent == NULL) | |
5937 | return NULL; | |
5938 | ||
5939 | if (parent->scope_set) | |
5940 | return parent->scope; | |
5941 | ||
5942 | fixup_partial_die (parent, cu); | |
5943 | ||
10b3939b | 5944 | grandparent_scope = partial_die_parent_scope (parent, cu); |
72bf9492 | 5945 | |
acebe513 UW |
5946 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
5947 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
5948 | Work around this problem here. */ | |
5949 | if (cu->language == language_cplus | |
6e70227d | 5950 | && parent->tag == DW_TAG_namespace |
acebe513 UW |
5951 | && strcmp (parent->name, "::") == 0 |
5952 | && grandparent_scope == NULL) | |
5953 | { | |
5954 | parent->scope = NULL; | |
5955 | parent->scope_set = 1; | |
5956 | return NULL; | |
5957 | } | |
5958 | ||
9c6c53f7 SA |
5959 | if (pdi->tag == DW_TAG_enumerator) |
5960 | /* Enumerators should not get the name of the enumeration as a prefix. */ | |
5961 | parent->scope = grandparent_scope; | |
5962 | else if (parent->tag == DW_TAG_namespace | |
f55ee35c | 5963 | || parent->tag == DW_TAG_module |
72bf9492 DJ |
5964 | || parent->tag == DW_TAG_structure_type |
5965 | || parent->tag == DW_TAG_class_type | |
680b30c7 | 5966 | || parent->tag == DW_TAG_interface_type |
ceeb3d5a TT |
5967 | || parent->tag == DW_TAG_union_type |
5968 | || parent->tag == DW_TAG_enumeration_type) | |
72bf9492 DJ |
5969 | { |
5970 | if (grandparent_scope == NULL) | |
5971 | parent->scope = parent->name; | |
5972 | else | |
3e43a32a MS |
5973 | parent->scope = typename_concat (&cu->comp_unit_obstack, |
5974 | grandparent_scope, | |
f55ee35c | 5975 | parent->name, 0, cu); |
72bf9492 | 5976 | } |
72bf9492 DJ |
5977 | else |
5978 | { | |
5979 | /* FIXME drow/2004-04-01: What should we be doing with | |
5980 | function-local names? For partial symbols, we should probably be | |
5981 | ignoring them. */ | |
5982 | complaint (&symfile_complaints, | |
e2e0b3e5 | 5983 | _("unhandled containing DIE tag %d for DIE at %d"), |
b64f50a1 | 5984 | parent->tag, pdi->offset.sect_off); |
72bf9492 | 5985 | parent->scope = grandparent_scope; |
c906108c SS |
5986 | } |
5987 | ||
72bf9492 DJ |
5988 | parent->scope_set = 1; |
5989 | return parent->scope; | |
5990 | } | |
5991 | ||
5992 | /* Return the fully scoped name associated with PDI, from compilation unit | |
5993 | CU. The result will be allocated with malloc. */ | |
4568ecf9 | 5994 | |
72bf9492 DJ |
5995 | static char * |
5996 | partial_die_full_name (struct partial_die_info *pdi, | |
5997 | struct dwarf2_cu *cu) | |
5998 | { | |
15d034d0 | 5999 | const char *parent_scope; |
72bf9492 | 6000 | |
98bfdba5 PA |
6001 | /* If this is a template instantiation, we can not work out the |
6002 | template arguments from partial DIEs. So, unfortunately, we have | |
6003 | to go through the full DIEs. At least any work we do building | |
6004 | types here will be reused if full symbols are loaded later. */ | |
6005 | if (pdi->has_template_arguments) | |
6006 | { | |
6007 | fixup_partial_die (pdi, cu); | |
6008 | ||
6009 | if (pdi->name != NULL && strchr (pdi->name, '<') == NULL) | |
6010 | { | |
6011 | struct die_info *die; | |
6012 | struct attribute attr; | |
6013 | struct dwarf2_cu *ref_cu = cu; | |
6014 | ||
b64f50a1 | 6015 | /* DW_FORM_ref_addr is using section offset. */ |
98bfdba5 PA |
6016 | attr.name = 0; |
6017 | attr.form = DW_FORM_ref_addr; | |
4568ecf9 | 6018 | attr.u.unsnd = pdi->offset.sect_off; |
98bfdba5 PA |
6019 | die = follow_die_ref (NULL, &attr, &ref_cu); |
6020 | ||
6021 | return xstrdup (dwarf2_full_name (NULL, die, ref_cu)); | |
6022 | } | |
6023 | } | |
6024 | ||
72bf9492 DJ |
6025 | parent_scope = partial_die_parent_scope (pdi, cu); |
6026 | if (parent_scope == NULL) | |
6027 | return NULL; | |
6028 | else | |
f55ee35c | 6029 | return typename_concat (NULL, parent_scope, pdi->name, 0, cu); |
c906108c SS |
6030 | } |
6031 | ||
6032 | static void | |
72bf9492 | 6033 | add_partial_symbol (struct partial_die_info *pdi, struct dwarf2_cu *cu) |
c906108c | 6034 | { |
e7c27a73 | 6035 | struct objfile *objfile = cu->objfile; |
c906108c | 6036 | CORE_ADDR addr = 0; |
15d034d0 | 6037 | const char *actual_name = NULL; |
e142c38c | 6038 | CORE_ADDR baseaddr; |
15d034d0 | 6039 | char *built_actual_name; |
e142c38c DJ |
6040 | |
6041 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 6042 | |
15d034d0 TT |
6043 | built_actual_name = partial_die_full_name (pdi, cu); |
6044 | if (built_actual_name != NULL) | |
6045 | actual_name = built_actual_name; | |
63d06c5c | 6046 | |
72bf9492 DJ |
6047 | if (actual_name == NULL) |
6048 | actual_name = pdi->name; | |
6049 | ||
c906108c SS |
6050 | switch (pdi->tag) |
6051 | { | |
6052 | case DW_TAG_subprogram: | |
2cfa0c8d | 6053 | if (pdi->is_external || cu->language == language_ada) |
c906108c | 6054 | { |
2cfa0c8d JB |
6055 | /* brobecker/2007-12-26: Normally, only "external" DIEs are part |
6056 | of the global scope. But in Ada, we want to be able to access | |
6057 | nested procedures globally. So all Ada subprograms are stored | |
6058 | in the global scope. */ | |
f47fb265 | 6059 | /* prim_record_minimal_symbol (actual_name, pdi->lowpc + baseaddr, |
c5aa993b | 6060 | mst_text, objfile); */ |
f47fb265 | 6061 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 6062 | built_actual_name != NULL, |
f47fb265 MS |
6063 | VAR_DOMAIN, LOC_BLOCK, |
6064 | &objfile->global_psymbols, | |
6065 | 0, pdi->lowpc + baseaddr, | |
6066 | cu->language, objfile); | |
c906108c SS |
6067 | } |
6068 | else | |
6069 | { | |
f47fb265 | 6070 | /* prim_record_minimal_symbol (actual_name, pdi->lowpc + baseaddr, |
c5aa993b | 6071 | mst_file_text, objfile); */ |
f47fb265 | 6072 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 6073 | built_actual_name != NULL, |
f47fb265 MS |
6074 | VAR_DOMAIN, LOC_BLOCK, |
6075 | &objfile->static_psymbols, | |
6076 | 0, pdi->lowpc + baseaddr, | |
6077 | cu->language, objfile); | |
c906108c SS |
6078 | } |
6079 | break; | |
72929c62 JB |
6080 | case DW_TAG_constant: |
6081 | { | |
6082 | struct psymbol_allocation_list *list; | |
6083 | ||
6084 | if (pdi->is_external) | |
6085 | list = &objfile->global_psymbols; | |
6086 | else | |
6087 | list = &objfile->static_psymbols; | |
f47fb265 | 6088 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 6089 | built_actual_name != NULL, VAR_DOMAIN, LOC_STATIC, |
f47fb265 | 6090 | list, 0, 0, cu->language, objfile); |
72929c62 JB |
6091 | } |
6092 | break; | |
c906108c | 6093 | case DW_TAG_variable: |
95554aad TT |
6094 | if (pdi->d.locdesc) |
6095 | addr = decode_locdesc (pdi->d.locdesc, cu); | |
caac4577 | 6096 | |
95554aad | 6097 | if (pdi->d.locdesc |
caac4577 JG |
6098 | && addr == 0 |
6099 | && !dwarf2_per_objfile->has_section_at_zero) | |
6100 | { | |
6101 | /* A global or static variable may also have been stripped | |
6102 | out by the linker if unused, in which case its address | |
6103 | will be nullified; do not add such variables into partial | |
6104 | symbol table then. */ | |
6105 | } | |
6106 | else if (pdi->is_external) | |
c906108c SS |
6107 | { |
6108 | /* Global Variable. | |
6109 | Don't enter into the minimal symbol tables as there is | |
6110 | a minimal symbol table entry from the ELF symbols already. | |
6111 | Enter into partial symbol table if it has a location | |
6112 | descriptor or a type. | |
6113 | If the location descriptor is missing, new_symbol will create | |
6114 | a LOC_UNRESOLVED symbol, the address of the variable will then | |
6115 | be determined from the minimal symbol table whenever the variable | |
6116 | is referenced. | |
6117 | The address for the partial symbol table entry is not | |
6118 | used by GDB, but it comes in handy for debugging partial symbol | |
6119 | table building. */ | |
6120 | ||
95554aad | 6121 | if (pdi->d.locdesc || pdi->has_type) |
f47fb265 | 6122 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 6123 | built_actual_name != NULL, |
f47fb265 MS |
6124 | VAR_DOMAIN, LOC_STATIC, |
6125 | &objfile->global_psymbols, | |
6126 | 0, addr + baseaddr, | |
6127 | cu->language, objfile); | |
c906108c SS |
6128 | } |
6129 | else | |
6130 | { | |
0963b4bd | 6131 | /* Static Variable. Skip symbols without location descriptors. */ |
95554aad | 6132 | if (pdi->d.locdesc == NULL) |
decbce07 | 6133 | { |
15d034d0 | 6134 | xfree (built_actual_name); |
decbce07 MS |
6135 | return; |
6136 | } | |
f47fb265 | 6137 | /* prim_record_minimal_symbol (actual_name, addr + baseaddr, |
c5aa993b | 6138 | mst_file_data, objfile); */ |
f47fb265 | 6139 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 6140 | built_actual_name != NULL, |
f47fb265 MS |
6141 | VAR_DOMAIN, LOC_STATIC, |
6142 | &objfile->static_psymbols, | |
6143 | 0, addr + baseaddr, | |
6144 | cu->language, objfile); | |
c906108c SS |
6145 | } |
6146 | break; | |
6147 | case DW_TAG_typedef: | |
6148 | case DW_TAG_base_type: | |
a02abb62 | 6149 | case DW_TAG_subrange_type: |
38d518c9 | 6150 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 6151 | built_actual_name != NULL, |
176620f1 | 6152 | VAR_DOMAIN, LOC_TYPEDEF, |
c906108c | 6153 | &objfile->static_psymbols, |
e142c38c | 6154 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c | 6155 | break; |
72bf9492 DJ |
6156 | case DW_TAG_namespace: |
6157 | add_psymbol_to_list (actual_name, strlen (actual_name), | |
15d034d0 | 6158 | built_actual_name != NULL, |
72bf9492 DJ |
6159 | VAR_DOMAIN, LOC_TYPEDEF, |
6160 | &objfile->global_psymbols, | |
6161 | 0, (CORE_ADDR) 0, cu->language, objfile); | |
6162 | break; | |
c906108c | 6163 | case DW_TAG_class_type: |
680b30c7 | 6164 | case DW_TAG_interface_type: |
c906108c SS |
6165 | case DW_TAG_structure_type: |
6166 | case DW_TAG_union_type: | |
6167 | case DW_TAG_enumeration_type: | |
fa4028e9 JB |
6168 | /* Skip external references. The DWARF standard says in the section |
6169 | about "Structure, Union, and Class Type Entries": "An incomplete | |
6170 | structure, union or class type is represented by a structure, | |
6171 | union or class entry that does not have a byte size attribute | |
6172 | and that has a DW_AT_declaration attribute." */ | |
6173 | if (!pdi->has_byte_size && pdi->is_declaration) | |
decbce07 | 6174 | { |
15d034d0 | 6175 | xfree (built_actual_name); |
decbce07 MS |
6176 | return; |
6177 | } | |
fa4028e9 | 6178 | |
63d06c5c DC |
6179 | /* NOTE: carlton/2003-10-07: See comment in new_symbol about |
6180 | static vs. global. */ | |
38d518c9 | 6181 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 6182 | built_actual_name != NULL, |
176620f1 | 6183 | STRUCT_DOMAIN, LOC_TYPEDEF, |
987504bb JJ |
6184 | (cu->language == language_cplus |
6185 | || cu->language == language_java) | |
63d06c5c DC |
6186 | ? &objfile->global_psymbols |
6187 | : &objfile->static_psymbols, | |
e142c38c | 6188 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c | 6189 | |
c906108c SS |
6190 | break; |
6191 | case DW_TAG_enumerator: | |
38d518c9 | 6192 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 6193 | built_actual_name != NULL, |
176620f1 | 6194 | VAR_DOMAIN, LOC_CONST, |
987504bb JJ |
6195 | (cu->language == language_cplus |
6196 | || cu->language == language_java) | |
f6fe98ef DJ |
6197 | ? &objfile->global_psymbols |
6198 | : &objfile->static_psymbols, | |
e142c38c | 6199 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c SS |
6200 | break; |
6201 | default: | |
6202 | break; | |
6203 | } | |
5c4e30ca | 6204 | |
15d034d0 | 6205 | xfree (built_actual_name); |
c906108c SS |
6206 | } |
6207 | ||
5c4e30ca DC |
6208 | /* Read a partial die corresponding to a namespace; also, add a symbol |
6209 | corresponding to that namespace to the symbol table. NAMESPACE is | |
6210 | the name of the enclosing namespace. */ | |
91c24f0a | 6211 | |
72bf9492 DJ |
6212 | static void |
6213 | add_partial_namespace (struct partial_die_info *pdi, | |
91c24f0a | 6214 | CORE_ADDR *lowpc, CORE_ADDR *highpc, |
5734ee8b | 6215 | int need_pc, struct dwarf2_cu *cu) |
91c24f0a | 6216 | { |
72bf9492 | 6217 | /* Add a symbol for the namespace. */ |
e7c27a73 | 6218 | |
72bf9492 | 6219 | add_partial_symbol (pdi, cu); |
5c4e30ca DC |
6220 | |
6221 | /* Now scan partial symbols in that namespace. */ | |
6222 | ||
91c24f0a | 6223 | if (pdi->has_children) |
5734ee8b | 6224 | scan_partial_symbols (pdi->die_child, lowpc, highpc, need_pc, cu); |
91c24f0a DC |
6225 | } |
6226 | ||
5d7cb8df JK |
6227 | /* Read a partial die corresponding to a Fortran module. */ |
6228 | ||
6229 | static void | |
6230 | add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, | |
6231 | CORE_ADDR *highpc, int need_pc, struct dwarf2_cu *cu) | |
6232 | { | |
f55ee35c | 6233 | /* Now scan partial symbols in that module. */ |
5d7cb8df JK |
6234 | |
6235 | if (pdi->has_children) | |
6236 | scan_partial_symbols (pdi->die_child, lowpc, highpc, need_pc, cu); | |
6237 | } | |
6238 | ||
bc30ff58 JB |
6239 | /* Read a partial die corresponding to a subprogram and create a partial |
6240 | symbol for that subprogram. When the CU language allows it, this | |
6241 | routine also defines a partial symbol for each nested subprogram | |
6242 | that this subprogram contains. | |
6e70227d | 6243 | |
bc30ff58 JB |
6244 | DIE my also be a lexical block, in which case we simply search |
6245 | recursively for suprograms defined inside that lexical block. | |
6246 | Again, this is only performed when the CU language allows this | |
6247 | type of definitions. */ | |
6248 | ||
6249 | static void | |
6250 | add_partial_subprogram (struct partial_die_info *pdi, | |
6251 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 6252 | int need_pc, struct dwarf2_cu *cu) |
bc30ff58 JB |
6253 | { |
6254 | if (pdi->tag == DW_TAG_subprogram) | |
6255 | { | |
6256 | if (pdi->has_pc_info) | |
6257 | { | |
6258 | if (pdi->lowpc < *lowpc) | |
6259 | *lowpc = pdi->lowpc; | |
6260 | if (pdi->highpc > *highpc) | |
6261 | *highpc = pdi->highpc; | |
5734ee8b DJ |
6262 | if (need_pc) |
6263 | { | |
6264 | CORE_ADDR baseaddr; | |
6265 | struct objfile *objfile = cu->objfile; | |
6266 | ||
6267 | baseaddr = ANOFFSET (objfile->section_offsets, | |
6268 | SECT_OFF_TEXT (objfile)); | |
6269 | addrmap_set_empty (objfile->psymtabs_addrmap, | |
01637564 DE |
6270 | pdi->lowpc + baseaddr, |
6271 | pdi->highpc - 1 + baseaddr, | |
9291a0cd | 6272 | cu->per_cu->v.psymtab); |
5734ee8b | 6273 | } |
481860b3 GB |
6274 | } |
6275 | ||
6276 | if (pdi->has_pc_info || (!pdi->is_external && pdi->may_be_inlined)) | |
6277 | { | |
bc30ff58 | 6278 | if (!pdi->is_declaration) |
e8d05480 JB |
6279 | /* Ignore subprogram DIEs that do not have a name, they are |
6280 | illegal. Do not emit a complaint at this point, we will | |
6281 | do so when we convert this psymtab into a symtab. */ | |
6282 | if (pdi->name) | |
6283 | add_partial_symbol (pdi, cu); | |
bc30ff58 JB |
6284 | } |
6285 | } | |
6e70227d | 6286 | |
bc30ff58 JB |
6287 | if (! pdi->has_children) |
6288 | return; | |
6289 | ||
6290 | if (cu->language == language_ada) | |
6291 | { | |
6292 | pdi = pdi->die_child; | |
6293 | while (pdi != NULL) | |
6294 | { | |
6295 | fixup_partial_die (pdi, cu); | |
6296 | if (pdi->tag == DW_TAG_subprogram | |
6297 | || pdi->tag == DW_TAG_lexical_block) | |
5734ee8b | 6298 | add_partial_subprogram (pdi, lowpc, highpc, need_pc, cu); |
bc30ff58 JB |
6299 | pdi = pdi->die_sibling; |
6300 | } | |
6301 | } | |
6302 | } | |
6303 | ||
91c24f0a DC |
6304 | /* Read a partial die corresponding to an enumeration type. */ |
6305 | ||
72bf9492 DJ |
6306 | static void |
6307 | add_partial_enumeration (struct partial_die_info *enum_pdi, | |
6308 | struct dwarf2_cu *cu) | |
91c24f0a | 6309 | { |
72bf9492 | 6310 | struct partial_die_info *pdi; |
91c24f0a DC |
6311 | |
6312 | if (enum_pdi->name != NULL) | |
72bf9492 DJ |
6313 | add_partial_symbol (enum_pdi, cu); |
6314 | ||
6315 | pdi = enum_pdi->die_child; | |
6316 | while (pdi) | |
91c24f0a | 6317 | { |
72bf9492 | 6318 | if (pdi->tag != DW_TAG_enumerator || pdi->name == NULL) |
e2e0b3e5 | 6319 | complaint (&symfile_complaints, _("malformed enumerator DIE ignored")); |
91c24f0a | 6320 | else |
72bf9492 DJ |
6321 | add_partial_symbol (pdi, cu); |
6322 | pdi = pdi->die_sibling; | |
91c24f0a | 6323 | } |
91c24f0a DC |
6324 | } |
6325 | ||
6caca83c CC |
6326 | /* Return the initial uleb128 in the die at INFO_PTR. */ |
6327 | ||
6328 | static unsigned int | |
6329 | peek_abbrev_code (bfd *abfd, gdb_byte *info_ptr) | |
6330 | { | |
6331 | unsigned int bytes_read; | |
6332 | ||
6333 | return read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
6334 | } | |
6335 | ||
4bb7a0a7 DJ |
6336 | /* Read the initial uleb128 in the die at INFO_PTR in compilation unit CU. |
6337 | Return the corresponding abbrev, or NULL if the number is zero (indicating | |
6338 | an empty DIE). In either case *BYTES_READ will be set to the length of | |
6339 | the initial number. */ | |
6340 | ||
6341 | static struct abbrev_info * | |
fe1b8b76 | 6342 | peek_die_abbrev (gdb_byte *info_ptr, unsigned int *bytes_read, |
891d2f0b | 6343 | struct dwarf2_cu *cu) |
4bb7a0a7 DJ |
6344 | { |
6345 | bfd *abfd = cu->objfile->obfd; | |
6346 | unsigned int abbrev_number; | |
6347 | struct abbrev_info *abbrev; | |
6348 | ||
6349 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
6350 | ||
6351 | if (abbrev_number == 0) | |
6352 | return NULL; | |
6353 | ||
433df2d4 | 6354 | abbrev = abbrev_table_lookup_abbrev (cu->abbrev_table, abbrev_number); |
4bb7a0a7 DJ |
6355 | if (!abbrev) |
6356 | { | |
3e43a32a MS |
6357 | error (_("Dwarf Error: Could not find abbrev number %d [in module %s]"), |
6358 | abbrev_number, bfd_get_filename (abfd)); | |
4bb7a0a7 DJ |
6359 | } |
6360 | ||
6361 | return abbrev; | |
6362 | } | |
6363 | ||
93311388 DE |
6364 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
6365 | Returns a pointer to the end of a series of DIEs, terminated by an empty | |
4bb7a0a7 DJ |
6366 | DIE. Any children of the skipped DIEs will also be skipped. */ |
6367 | ||
fe1b8b76 | 6368 | static gdb_byte * |
dee91e82 | 6369 | skip_children (const struct die_reader_specs *reader, gdb_byte *info_ptr) |
4bb7a0a7 | 6370 | { |
dee91e82 | 6371 | struct dwarf2_cu *cu = reader->cu; |
4bb7a0a7 DJ |
6372 | struct abbrev_info *abbrev; |
6373 | unsigned int bytes_read; | |
6374 | ||
6375 | while (1) | |
6376 | { | |
6377 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, cu); | |
6378 | if (abbrev == NULL) | |
6379 | return info_ptr + bytes_read; | |
6380 | else | |
dee91e82 | 6381 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
4bb7a0a7 DJ |
6382 | } |
6383 | } | |
6384 | ||
93311388 DE |
6385 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
6386 | INFO_PTR should point just after the initial uleb128 of a DIE, and the | |
4bb7a0a7 DJ |
6387 | abbrev corresponding to that skipped uleb128 should be passed in |
6388 | ABBREV. Returns a pointer to this DIE's sibling, skipping any | |
6389 | children. */ | |
6390 | ||
fe1b8b76 | 6391 | static gdb_byte * |
dee91e82 DE |
6392 | skip_one_die (const struct die_reader_specs *reader, gdb_byte *info_ptr, |
6393 | struct abbrev_info *abbrev) | |
4bb7a0a7 DJ |
6394 | { |
6395 | unsigned int bytes_read; | |
6396 | struct attribute attr; | |
dee91e82 DE |
6397 | bfd *abfd = reader->abfd; |
6398 | struct dwarf2_cu *cu = reader->cu; | |
6399 | gdb_byte *buffer = reader->buffer; | |
f664829e DE |
6400 | const gdb_byte *buffer_end = reader->buffer_end; |
6401 | gdb_byte *start_info_ptr = info_ptr; | |
4bb7a0a7 DJ |
6402 | unsigned int form, i; |
6403 | ||
6404 | for (i = 0; i < abbrev->num_attrs; i++) | |
6405 | { | |
6406 | /* The only abbrev we care about is DW_AT_sibling. */ | |
6407 | if (abbrev->attrs[i].name == DW_AT_sibling) | |
6408 | { | |
dee91e82 | 6409 | read_attribute (reader, &attr, &abbrev->attrs[i], info_ptr); |
4bb7a0a7 | 6410 | if (attr.form == DW_FORM_ref_addr) |
3e43a32a MS |
6411 | complaint (&symfile_complaints, |
6412 | _("ignoring absolute DW_AT_sibling")); | |
4bb7a0a7 | 6413 | else |
b64f50a1 | 6414 | return buffer + dwarf2_get_ref_die_offset (&attr).sect_off; |
4bb7a0a7 DJ |
6415 | } |
6416 | ||
6417 | /* If it isn't DW_AT_sibling, skip this attribute. */ | |
6418 | form = abbrev->attrs[i].form; | |
6419 | skip_attribute: | |
6420 | switch (form) | |
6421 | { | |
4bb7a0a7 | 6422 | case DW_FORM_ref_addr: |
ae411497 TT |
6423 | /* In DWARF 2, DW_FORM_ref_addr is address sized; in DWARF 3 |
6424 | and later it is offset sized. */ | |
6425 | if (cu->header.version == 2) | |
6426 | info_ptr += cu->header.addr_size; | |
6427 | else | |
6428 | info_ptr += cu->header.offset_size; | |
6429 | break; | |
36586728 TT |
6430 | case DW_FORM_GNU_ref_alt: |
6431 | info_ptr += cu->header.offset_size; | |
6432 | break; | |
ae411497 | 6433 | case DW_FORM_addr: |
4bb7a0a7 DJ |
6434 | info_ptr += cu->header.addr_size; |
6435 | break; | |
6436 | case DW_FORM_data1: | |
6437 | case DW_FORM_ref1: | |
6438 | case DW_FORM_flag: | |
6439 | info_ptr += 1; | |
6440 | break; | |
2dc7f7b3 TT |
6441 | case DW_FORM_flag_present: |
6442 | break; | |
4bb7a0a7 DJ |
6443 | case DW_FORM_data2: |
6444 | case DW_FORM_ref2: | |
6445 | info_ptr += 2; | |
6446 | break; | |
6447 | case DW_FORM_data4: | |
6448 | case DW_FORM_ref4: | |
6449 | info_ptr += 4; | |
6450 | break; | |
6451 | case DW_FORM_data8: | |
6452 | case DW_FORM_ref8: | |
55f1336d | 6453 | case DW_FORM_ref_sig8: |
4bb7a0a7 DJ |
6454 | info_ptr += 8; |
6455 | break; | |
6456 | case DW_FORM_string: | |
9b1c24c8 | 6457 | read_direct_string (abfd, info_ptr, &bytes_read); |
4bb7a0a7 DJ |
6458 | info_ptr += bytes_read; |
6459 | break; | |
2dc7f7b3 | 6460 | case DW_FORM_sec_offset: |
4bb7a0a7 | 6461 | case DW_FORM_strp: |
36586728 | 6462 | case DW_FORM_GNU_strp_alt: |
4bb7a0a7 DJ |
6463 | info_ptr += cu->header.offset_size; |
6464 | break; | |
2dc7f7b3 | 6465 | case DW_FORM_exprloc: |
4bb7a0a7 DJ |
6466 | case DW_FORM_block: |
6467 | info_ptr += read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
6468 | info_ptr += bytes_read; | |
6469 | break; | |
6470 | case DW_FORM_block1: | |
6471 | info_ptr += 1 + read_1_byte (abfd, info_ptr); | |
6472 | break; | |
6473 | case DW_FORM_block2: | |
6474 | info_ptr += 2 + read_2_bytes (abfd, info_ptr); | |
6475 | break; | |
6476 | case DW_FORM_block4: | |
6477 | info_ptr += 4 + read_4_bytes (abfd, info_ptr); | |
6478 | break; | |
6479 | case DW_FORM_sdata: | |
6480 | case DW_FORM_udata: | |
6481 | case DW_FORM_ref_udata: | |
3019eac3 DE |
6482 | case DW_FORM_GNU_addr_index: |
6483 | case DW_FORM_GNU_str_index: | |
f664829e | 6484 | info_ptr = (gdb_byte *) safe_skip_leb128 (info_ptr, buffer_end); |
4bb7a0a7 DJ |
6485 | break; |
6486 | case DW_FORM_indirect: | |
6487 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
6488 | info_ptr += bytes_read; | |
6489 | /* We need to continue parsing from here, so just go back to | |
6490 | the top. */ | |
6491 | goto skip_attribute; | |
6492 | ||
6493 | default: | |
3e43a32a MS |
6494 | error (_("Dwarf Error: Cannot handle %s " |
6495 | "in DWARF reader [in module %s]"), | |
4bb7a0a7 DJ |
6496 | dwarf_form_name (form), |
6497 | bfd_get_filename (abfd)); | |
6498 | } | |
6499 | } | |
6500 | ||
6501 | if (abbrev->has_children) | |
dee91e82 | 6502 | return skip_children (reader, info_ptr); |
4bb7a0a7 DJ |
6503 | else |
6504 | return info_ptr; | |
6505 | } | |
6506 | ||
93311388 | 6507 | /* Locate ORIG_PDI's sibling. |
dee91e82 | 6508 | INFO_PTR should point to the start of the next DIE after ORIG_PDI. */ |
91c24f0a | 6509 | |
fe1b8b76 | 6510 | static gdb_byte * |
dee91e82 DE |
6511 | locate_pdi_sibling (const struct die_reader_specs *reader, |
6512 | struct partial_die_info *orig_pdi, | |
6513 | gdb_byte *info_ptr) | |
91c24f0a DC |
6514 | { |
6515 | /* Do we know the sibling already? */ | |
72bf9492 | 6516 | |
91c24f0a DC |
6517 | if (orig_pdi->sibling) |
6518 | return orig_pdi->sibling; | |
6519 | ||
6520 | /* Are there any children to deal with? */ | |
6521 | ||
6522 | if (!orig_pdi->has_children) | |
6523 | return info_ptr; | |
6524 | ||
4bb7a0a7 | 6525 | /* Skip the children the long way. */ |
91c24f0a | 6526 | |
dee91e82 | 6527 | return skip_children (reader, info_ptr); |
91c24f0a DC |
6528 | } |
6529 | ||
257e7a09 | 6530 | /* Expand this partial symbol table into a full symbol table. SELF is |
442e4d9c | 6531 | not NULL. */ |
c906108c SS |
6532 | |
6533 | static void | |
257e7a09 YQ |
6534 | dwarf2_read_symtab (struct partial_symtab *self, |
6535 | struct objfile *objfile) | |
c906108c | 6536 | { |
257e7a09 | 6537 | if (self->readin) |
c906108c | 6538 | { |
442e4d9c | 6539 | warning (_("bug: psymtab for %s is already read in."), |
257e7a09 | 6540 | self->filename); |
442e4d9c YQ |
6541 | } |
6542 | else | |
6543 | { | |
6544 | if (info_verbose) | |
c906108c | 6545 | { |
442e4d9c | 6546 | printf_filtered (_("Reading in symbols for %s..."), |
257e7a09 | 6547 | self->filename); |
442e4d9c | 6548 | gdb_flush (gdb_stdout); |
c906108c | 6549 | } |
c906108c | 6550 | |
442e4d9c YQ |
6551 | /* Restore our global data. */ |
6552 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); | |
10b3939b | 6553 | |
442e4d9c YQ |
6554 | /* If this psymtab is constructed from a debug-only objfile, the |
6555 | has_section_at_zero flag will not necessarily be correct. We | |
6556 | can get the correct value for this flag by looking at the data | |
6557 | associated with the (presumably stripped) associated objfile. */ | |
6558 | if (objfile->separate_debug_objfile_backlink) | |
6559 | { | |
6560 | struct dwarf2_per_objfile *dpo_backlink | |
6561 | = objfile_data (objfile->separate_debug_objfile_backlink, | |
6562 | dwarf2_objfile_data_key); | |
9a619af0 | 6563 | |
442e4d9c YQ |
6564 | dwarf2_per_objfile->has_section_at_zero |
6565 | = dpo_backlink->has_section_at_zero; | |
6566 | } | |
b2ab525c | 6567 | |
442e4d9c | 6568 | dwarf2_per_objfile->reading_partial_symbols = 0; |
98bfdba5 | 6569 | |
257e7a09 | 6570 | psymtab_to_symtab_1 (self); |
c906108c | 6571 | |
442e4d9c YQ |
6572 | /* Finish up the debug error message. */ |
6573 | if (info_verbose) | |
6574 | printf_filtered (_("done.\n")); | |
c906108c | 6575 | } |
95554aad TT |
6576 | |
6577 | process_cu_includes (); | |
c906108c | 6578 | } |
9cdd5dbd DE |
6579 | \f |
6580 | /* Reading in full CUs. */ | |
c906108c | 6581 | |
10b3939b DJ |
6582 | /* Add PER_CU to the queue. */ |
6583 | ||
6584 | static void | |
95554aad TT |
6585 | queue_comp_unit (struct dwarf2_per_cu_data *per_cu, |
6586 | enum language pretend_language) | |
10b3939b DJ |
6587 | { |
6588 | struct dwarf2_queue_item *item; | |
6589 | ||
6590 | per_cu->queued = 1; | |
6591 | item = xmalloc (sizeof (*item)); | |
6592 | item->per_cu = per_cu; | |
95554aad | 6593 | item->pretend_language = pretend_language; |
10b3939b DJ |
6594 | item->next = NULL; |
6595 | ||
6596 | if (dwarf2_queue == NULL) | |
6597 | dwarf2_queue = item; | |
6598 | else | |
6599 | dwarf2_queue_tail->next = item; | |
6600 | ||
6601 | dwarf2_queue_tail = item; | |
6602 | } | |
6603 | ||
0907af0c DE |
6604 | /* THIS_CU has a reference to PER_CU. If necessary, load the new compilation |
6605 | unit and add it to our queue. | |
6606 | The result is non-zero if PER_CU was queued, otherwise the result is zero | |
6607 | meaning either PER_CU is already queued or it is already loaded. */ | |
6608 | ||
6609 | static int | |
6610 | maybe_queue_comp_unit (struct dwarf2_cu *this_cu, | |
6611 | struct dwarf2_per_cu_data *per_cu, | |
6612 | enum language pretend_language) | |
6613 | { | |
6614 | /* We may arrive here during partial symbol reading, if we need full | |
6615 | DIEs to process an unusual case (e.g. template arguments). Do | |
6616 | not queue PER_CU, just tell our caller to load its DIEs. */ | |
6617 | if (dwarf2_per_objfile->reading_partial_symbols) | |
6618 | { | |
6619 | if (per_cu->cu == NULL || per_cu->cu->dies == NULL) | |
6620 | return 1; | |
6621 | return 0; | |
6622 | } | |
6623 | ||
6624 | /* Mark the dependence relation so that we don't flush PER_CU | |
6625 | too early. */ | |
6626 | dwarf2_add_dependence (this_cu, per_cu); | |
6627 | ||
6628 | /* If it's already on the queue, we have nothing to do. */ | |
6629 | if (per_cu->queued) | |
6630 | return 0; | |
6631 | ||
6632 | /* If the compilation unit is already loaded, just mark it as | |
6633 | used. */ | |
6634 | if (per_cu->cu != NULL) | |
6635 | { | |
6636 | per_cu->cu->last_used = 0; | |
6637 | return 0; | |
6638 | } | |
6639 | ||
6640 | /* Add it to the queue. */ | |
6641 | queue_comp_unit (per_cu, pretend_language); | |
6642 | ||
6643 | return 1; | |
6644 | } | |
6645 | ||
10b3939b DJ |
6646 | /* Process the queue. */ |
6647 | ||
6648 | static void | |
a0f42c21 | 6649 | process_queue (void) |
10b3939b DJ |
6650 | { |
6651 | struct dwarf2_queue_item *item, *next_item; | |
6652 | ||
45cfd468 DE |
6653 | if (dwarf2_read_debug) |
6654 | { | |
6655 | fprintf_unfiltered (gdb_stdlog, | |
6656 | "Expanding one or more symtabs of objfile %s ...\n", | |
6657 | dwarf2_per_objfile->objfile->name); | |
6658 | } | |
6659 | ||
03dd20cc DJ |
6660 | /* The queue starts out with one item, but following a DIE reference |
6661 | may load a new CU, adding it to the end of the queue. */ | |
10b3939b DJ |
6662 | for (item = dwarf2_queue; item != NULL; dwarf2_queue = item = next_item) |
6663 | { | |
9291a0cd TT |
6664 | if (dwarf2_per_objfile->using_index |
6665 | ? !item->per_cu->v.quick->symtab | |
6666 | : (item->per_cu->v.psymtab && !item->per_cu->v.psymtab->readin)) | |
f4dc4d17 DE |
6667 | { |
6668 | struct dwarf2_per_cu_data *per_cu = item->per_cu; | |
6669 | ||
6670 | if (dwarf2_read_debug) | |
6671 | { | |
6672 | fprintf_unfiltered (gdb_stdlog, | |
6673 | "Expanding symtab of %s at offset 0x%x\n", | |
6674 | per_cu->is_debug_types ? "TU" : "CU", | |
6675 | per_cu->offset.sect_off); | |
6676 | } | |
6677 | ||
6678 | if (per_cu->is_debug_types) | |
6679 | process_full_type_unit (per_cu, item->pretend_language); | |
6680 | else | |
6681 | process_full_comp_unit (per_cu, item->pretend_language); | |
6682 | ||
6683 | if (dwarf2_read_debug) | |
6684 | { | |
6685 | fprintf_unfiltered (gdb_stdlog, | |
6686 | "Done expanding %s at offset 0x%x\n", | |
6687 | per_cu->is_debug_types ? "TU" : "CU", | |
6688 | per_cu->offset.sect_off); | |
6689 | } | |
6690 | } | |
10b3939b DJ |
6691 | |
6692 | item->per_cu->queued = 0; | |
6693 | next_item = item->next; | |
6694 | xfree (item); | |
6695 | } | |
6696 | ||
6697 | dwarf2_queue_tail = NULL; | |
45cfd468 DE |
6698 | |
6699 | if (dwarf2_read_debug) | |
6700 | { | |
6701 | fprintf_unfiltered (gdb_stdlog, "Done expanding symtabs of %s.\n", | |
6702 | dwarf2_per_objfile->objfile->name); | |
6703 | } | |
10b3939b DJ |
6704 | } |
6705 | ||
6706 | /* Free all allocated queue entries. This function only releases anything if | |
6707 | an error was thrown; if the queue was processed then it would have been | |
6708 | freed as we went along. */ | |
6709 | ||
6710 | static void | |
6711 | dwarf2_release_queue (void *dummy) | |
6712 | { | |
6713 | struct dwarf2_queue_item *item, *last; | |
6714 | ||
6715 | item = dwarf2_queue; | |
6716 | while (item) | |
6717 | { | |
6718 | /* Anything still marked queued is likely to be in an | |
6719 | inconsistent state, so discard it. */ | |
6720 | if (item->per_cu->queued) | |
6721 | { | |
6722 | if (item->per_cu->cu != NULL) | |
dee91e82 | 6723 | free_one_cached_comp_unit (item->per_cu); |
10b3939b DJ |
6724 | item->per_cu->queued = 0; |
6725 | } | |
6726 | ||
6727 | last = item; | |
6728 | item = item->next; | |
6729 | xfree (last); | |
6730 | } | |
6731 | ||
6732 | dwarf2_queue = dwarf2_queue_tail = NULL; | |
6733 | } | |
6734 | ||
6735 | /* Read in full symbols for PST, and anything it depends on. */ | |
6736 | ||
c906108c | 6737 | static void |
fba45db2 | 6738 | psymtab_to_symtab_1 (struct partial_symtab *pst) |
c906108c | 6739 | { |
10b3939b | 6740 | struct dwarf2_per_cu_data *per_cu; |
aaa75496 JB |
6741 | int i; |
6742 | ||
95554aad TT |
6743 | if (pst->readin) |
6744 | return; | |
6745 | ||
aaa75496 | 6746 | for (i = 0; i < pst->number_of_dependencies; i++) |
95554aad TT |
6747 | if (!pst->dependencies[i]->readin |
6748 | && pst->dependencies[i]->user == NULL) | |
aaa75496 JB |
6749 | { |
6750 | /* Inform about additional files that need to be read in. */ | |
6751 | if (info_verbose) | |
6752 | { | |
a3f17187 | 6753 | /* FIXME: i18n: Need to make this a single string. */ |
aaa75496 JB |
6754 | fputs_filtered (" ", gdb_stdout); |
6755 | wrap_here (""); | |
6756 | fputs_filtered ("and ", gdb_stdout); | |
6757 | wrap_here (""); | |
6758 | printf_filtered ("%s...", pst->dependencies[i]->filename); | |
0963b4bd | 6759 | wrap_here (""); /* Flush output. */ |
aaa75496 JB |
6760 | gdb_flush (gdb_stdout); |
6761 | } | |
6762 | psymtab_to_symtab_1 (pst->dependencies[i]); | |
6763 | } | |
6764 | ||
e38df1d0 | 6765 | per_cu = pst->read_symtab_private; |
10b3939b DJ |
6766 | |
6767 | if (per_cu == NULL) | |
aaa75496 JB |
6768 | { |
6769 | /* It's an include file, no symbols to read for it. | |
6770 | Everything is in the parent symtab. */ | |
6771 | pst->readin = 1; | |
6772 | return; | |
6773 | } | |
c906108c | 6774 | |
a0f42c21 | 6775 | dw2_do_instantiate_symtab (per_cu); |
10b3939b DJ |
6776 | } |
6777 | ||
dee91e82 DE |
6778 | /* Trivial hash function for die_info: the hash value of a DIE |
6779 | is its offset in .debug_info for this objfile. */ | |
10b3939b | 6780 | |
dee91e82 DE |
6781 | static hashval_t |
6782 | die_hash (const void *item) | |
10b3939b | 6783 | { |
dee91e82 | 6784 | const struct die_info *die = item; |
6502dd73 | 6785 | |
dee91e82 DE |
6786 | return die->offset.sect_off; |
6787 | } | |
63d06c5c | 6788 | |
dee91e82 DE |
6789 | /* Trivial comparison function for die_info structures: two DIEs |
6790 | are equal if they have the same offset. */ | |
98bfdba5 | 6791 | |
dee91e82 DE |
6792 | static int |
6793 | die_eq (const void *item_lhs, const void *item_rhs) | |
6794 | { | |
6795 | const struct die_info *die_lhs = item_lhs; | |
6796 | const struct die_info *die_rhs = item_rhs; | |
c906108c | 6797 | |
dee91e82 DE |
6798 | return die_lhs->offset.sect_off == die_rhs->offset.sect_off; |
6799 | } | |
c906108c | 6800 | |
dee91e82 DE |
6801 | /* die_reader_func for load_full_comp_unit. |
6802 | This is identical to read_signatured_type_reader, | |
6803 | but is kept separate for now. */ | |
c906108c | 6804 | |
dee91e82 DE |
6805 | static void |
6806 | load_full_comp_unit_reader (const struct die_reader_specs *reader, | |
6807 | gdb_byte *info_ptr, | |
6808 | struct die_info *comp_unit_die, | |
6809 | int has_children, | |
6810 | void *data) | |
6811 | { | |
6812 | struct dwarf2_cu *cu = reader->cu; | |
95554aad | 6813 | enum language *language_ptr = data; |
6caca83c | 6814 | |
dee91e82 DE |
6815 | gdb_assert (cu->die_hash == NULL); |
6816 | cu->die_hash = | |
6817 | htab_create_alloc_ex (cu->header.length / 12, | |
6818 | die_hash, | |
6819 | die_eq, | |
6820 | NULL, | |
6821 | &cu->comp_unit_obstack, | |
6822 | hashtab_obstack_allocate, | |
6823 | dummy_obstack_deallocate); | |
e142c38c | 6824 | |
dee91e82 DE |
6825 | if (has_children) |
6826 | comp_unit_die->child = read_die_and_siblings (reader, info_ptr, | |
6827 | &info_ptr, comp_unit_die); | |
6828 | cu->dies = comp_unit_die; | |
6829 | /* comp_unit_die is not stored in die_hash, no need. */ | |
10b3939b DJ |
6830 | |
6831 | /* We try not to read any attributes in this function, because not | |
9cdd5dbd | 6832 | all CUs needed for references have been loaded yet, and symbol |
10b3939b | 6833 | table processing isn't initialized. But we have to set the CU language, |
dee91e82 DE |
6834 | or we won't be able to build types correctly. |
6835 | Similarly, if we do not read the producer, we can not apply | |
6836 | producer-specific interpretation. */ | |
95554aad | 6837 | prepare_one_comp_unit (cu, cu->dies, *language_ptr); |
dee91e82 | 6838 | } |
10b3939b | 6839 | |
dee91e82 | 6840 | /* Load the DIEs associated with PER_CU into memory. */ |
a6c727b2 | 6841 | |
dee91e82 | 6842 | static void |
95554aad TT |
6843 | load_full_comp_unit (struct dwarf2_per_cu_data *this_cu, |
6844 | enum language pretend_language) | |
dee91e82 | 6845 | { |
3019eac3 | 6846 | gdb_assert (! this_cu->is_debug_types); |
c5b7e1cb | 6847 | |
f4dc4d17 DE |
6848 | init_cutu_and_read_dies (this_cu, NULL, 1, 1, |
6849 | load_full_comp_unit_reader, &pretend_language); | |
10b3939b DJ |
6850 | } |
6851 | ||
3da10d80 KS |
6852 | /* Add a DIE to the delayed physname list. */ |
6853 | ||
6854 | static void | |
6855 | add_to_method_list (struct type *type, int fnfield_index, int index, | |
6856 | const char *name, struct die_info *die, | |
6857 | struct dwarf2_cu *cu) | |
6858 | { | |
6859 | struct delayed_method_info mi; | |
6860 | mi.type = type; | |
6861 | mi.fnfield_index = fnfield_index; | |
6862 | mi.index = index; | |
6863 | mi.name = name; | |
6864 | mi.die = die; | |
6865 | VEC_safe_push (delayed_method_info, cu->method_list, &mi); | |
6866 | } | |
6867 | ||
6868 | /* A cleanup for freeing the delayed method list. */ | |
6869 | ||
6870 | static void | |
6871 | free_delayed_list (void *ptr) | |
6872 | { | |
6873 | struct dwarf2_cu *cu = (struct dwarf2_cu *) ptr; | |
6874 | if (cu->method_list != NULL) | |
6875 | { | |
6876 | VEC_free (delayed_method_info, cu->method_list); | |
6877 | cu->method_list = NULL; | |
6878 | } | |
6879 | } | |
6880 | ||
6881 | /* Compute the physnames of any methods on the CU's method list. | |
6882 | ||
6883 | The computation of method physnames is delayed in order to avoid the | |
6884 | (bad) condition that one of the method's formal parameters is of an as yet | |
6885 | incomplete type. */ | |
6886 | ||
6887 | static void | |
6888 | compute_delayed_physnames (struct dwarf2_cu *cu) | |
6889 | { | |
6890 | int i; | |
6891 | struct delayed_method_info *mi; | |
6892 | for (i = 0; VEC_iterate (delayed_method_info, cu->method_list, i, mi) ; ++i) | |
6893 | { | |
1d06ead6 | 6894 | const char *physname; |
3da10d80 KS |
6895 | struct fn_fieldlist *fn_flp |
6896 | = &TYPE_FN_FIELDLIST (mi->type, mi->fnfield_index); | |
7d455152 | 6897 | physname = dwarf2_physname (mi->name, mi->die, cu); |
3da10d80 KS |
6898 | fn_flp->fn_fields[mi->index].physname = physname ? physname : ""; |
6899 | } | |
6900 | } | |
6901 | ||
a766d390 DE |
6902 | /* Go objects should be embedded in a DW_TAG_module DIE, |
6903 | and it's not clear if/how imported objects will appear. | |
6904 | To keep Go support simple until that's worked out, | |
6905 | go back through what we've read and create something usable. | |
6906 | We could do this while processing each DIE, and feels kinda cleaner, | |
6907 | but that way is more invasive. | |
6908 | This is to, for example, allow the user to type "p var" or "b main" | |
6909 | without having to specify the package name, and allow lookups | |
6910 | of module.object to work in contexts that use the expression | |
6911 | parser. */ | |
6912 | ||
6913 | static void | |
6914 | fixup_go_packaging (struct dwarf2_cu *cu) | |
6915 | { | |
6916 | char *package_name = NULL; | |
6917 | struct pending *list; | |
6918 | int i; | |
6919 | ||
6920 | for (list = global_symbols; list != NULL; list = list->next) | |
6921 | { | |
6922 | for (i = 0; i < list->nsyms; ++i) | |
6923 | { | |
6924 | struct symbol *sym = list->symbol[i]; | |
6925 | ||
6926 | if (SYMBOL_LANGUAGE (sym) == language_go | |
6927 | && SYMBOL_CLASS (sym) == LOC_BLOCK) | |
6928 | { | |
6929 | char *this_package_name = go_symbol_package_name (sym); | |
6930 | ||
6931 | if (this_package_name == NULL) | |
6932 | continue; | |
6933 | if (package_name == NULL) | |
6934 | package_name = this_package_name; | |
6935 | else | |
6936 | { | |
6937 | if (strcmp (package_name, this_package_name) != 0) | |
6938 | complaint (&symfile_complaints, | |
6939 | _("Symtab %s has objects from two different Go packages: %s and %s"), | |
210bbc17 | 6940 | (SYMBOL_SYMTAB (sym) |
05cba821 | 6941 | ? symtab_to_filename_for_display (SYMBOL_SYMTAB (sym)) |
a766d390 DE |
6942 | : cu->objfile->name), |
6943 | this_package_name, package_name); | |
6944 | xfree (this_package_name); | |
6945 | } | |
6946 | } | |
6947 | } | |
6948 | } | |
6949 | ||
6950 | if (package_name != NULL) | |
6951 | { | |
6952 | struct objfile *objfile = cu->objfile; | |
10f0c4bb TT |
6953 | const char *saved_package_name = obstack_copy0 (&objfile->objfile_obstack, |
6954 | package_name, | |
6955 | strlen (package_name)); | |
a766d390 | 6956 | struct type *type = init_type (TYPE_CODE_MODULE, 0, 0, |
86f62fd7 | 6957 | saved_package_name, objfile); |
a766d390 DE |
6958 | struct symbol *sym; |
6959 | ||
6960 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
6961 | ||
6962 | sym = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct symbol); | |
6963 | SYMBOL_SET_LANGUAGE (sym, language_go); | |
86f62fd7 TT |
6964 | SYMBOL_SET_NAMES (sym, saved_package_name, |
6965 | strlen (saved_package_name), 0, objfile); | |
a766d390 DE |
6966 | /* This is not VAR_DOMAIN because we want a way to ensure a lookup of, |
6967 | e.g., "main" finds the "main" module and not C's main(). */ | |
6968 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; | |
f1e6e072 | 6969 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
a766d390 DE |
6970 | SYMBOL_TYPE (sym) = type; |
6971 | ||
6972 | add_symbol_to_list (sym, &global_symbols); | |
6973 | ||
6974 | xfree (package_name); | |
6975 | } | |
6976 | } | |
6977 | ||
95554aad TT |
6978 | /* Return the symtab for PER_CU. This works properly regardless of |
6979 | whether we're using the index or psymtabs. */ | |
6980 | ||
6981 | static struct symtab * | |
6982 | get_symtab (struct dwarf2_per_cu_data *per_cu) | |
6983 | { | |
6984 | return (dwarf2_per_objfile->using_index | |
6985 | ? per_cu->v.quick->symtab | |
6986 | : per_cu->v.psymtab->symtab); | |
6987 | } | |
6988 | ||
6989 | /* A helper function for computing the list of all symbol tables | |
6990 | included by PER_CU. */ | |
6991 | ||
6992 | static void | |
6993 | recursively_compute_inclusions (VEC (dwarf2_per_cu_ptr) **result, | |
6994 | htab_t all_children, | |
6995 | struct dwarf2_per_cu_data *per_cu) | |
6996 | { | |
6997 | void **slot; | |
6998 | int ix; | |
6999 | struct dwarf2_per_cu_data *iter; | |
7000 | ||
7001 | slot = htab_find_slot (all_children, per_cu, INSERT); | |
7002 | if (*slot != NULL) | |
7003 | { | |
7004 | /* This inclusion and its children have been processed. */ | |
7005 | return; | |
7006 | } | |
7007 | ||
7008 | *slot = per_cu; | |
7009 | /* Only add a CU if it has a symbol table. */ | |
7010 | if (get_symtab (per_cu) != NULL) | |
7011 | VEC_safe_push (dwarf2_per_cu_ptr, *result, per_cu); | |
7012 | ||
7013 | for (ix = 0; | |
796a7ff8 | 7014 | VEC_iterate (dwarf2_per_cu_ptr, per_cu->imported_symtabs, ix, iter); |
95554aad TT |
7015 | ++ix) |
7016 | recursively_compute_inclusions (result, all_children, iter); | |
7017 | } | |
7018 | ||
7019 | /* Compute the symtab 'includes' fields for the symtab related to | |
7020 | PER_CU. */ | |
7021 | ||
7022 | static void | |
7023 | compute_symtab_includes (struct dwarf2_per_cu_data *per_cu) | |
7024 | { | |
f4dc4d17 DE |
7025 | gdb_assert (! per_cu->is_debug_types); |
7026 | ||
796a7ff8 | 7027 | if (!VEC_empty (dwarf2_per_cu_ptr, per_cu->imported_symtabs)) |
95554aad TT |
7028 | { |
7029 | int ix, len; | |
7030 | struct dwarf2_per_cu_data *iter; | |
7031 | VEC (dwarf2_per_cu_ptr) *result_children = NULL; | |
7032 | htab_t all_children; | |
7033 | struct symtab *symtab = get_symtab (per_cu); | |
7034 | ||
7035 | /* If we don't have a symtab, we can just skip this case. */ | |
7036 | if (symtab == NULL) | |
7037 | return; | |
7038 | ||
7039 | all_children = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, | |
7040 | NULL, xcalloc, xfree); | |
7041 | ||
7042 | for (ix = 0; | |
796a7ff8 | 7043 | VEC_iterate (dwarf2_per_cu_ptr, per_cu->imported_symtabs, |
95554aad TT |
7044 | ix, iter); |
7045 | ++ix) | |
7046 | recursively_compute_inclusions (&result_children, all_children, iter); | |
7047 | ||
796a7ff8 DE |
7048 | /* Now we have a transitive closure of all the included CUs, and |
7049 | for .gdb_index version 7 the included TUs, so we can convert it | |
7050 | to a list of symtabs. */ | |
95554aad TT |
7051 | len = VEC_length (dwarf2_per_cu_ptr, result_children); |
7052 | symtab->includes | |
7053 | = obstack_alloc (&dwarf2_per_objfile->objfile->objfile_obstack, | |
7054 | (len + 1) * sizeof (struct symtab *)); | |
7055 | for (ix = 0; | |
7056 | VEC_iterate (dwarf2_per_cu_ptr, result_children, ix, iter); | |
7057 | ++ix) | |
7058 | symtab->includes[ix] = get_symtab (iter); | |
7059 | symtab->includes[len] = NULL; | |
7060 | ||
7061 | VEC_free (dwarf2_per_cu_ptr, result_children); | |
7062 | htab_delete (all_children); | |
7063 | } | |
7064 | } | |
7065 | ||
7066 | /* Compute the 'includes' field for the symtabs of all the CUs we just | |
7067 | read. */ | |
7068 | ||
7069 | static void | |
7070 | process_cu_includes (void) | |
7071 | { | |
7072 | int ix; | |
7073 | struct dwarf2_per_cu_data *iter; | |
7074 | ||
7075 | for (ix = 0; | |
7076 | VEC_iterate (dwarf2_per_cu_ptr, dwarf2_per_objfile->just_read_cus, | |
7077 | ix, iter); | |
7078 | ++ix) | |
f4dc4d17 DE |
7079 | { |
7080 | if (! iter->is_debug_types) | |
7081 | compute_symtab_includes (iter); | |
7082 | } | |
95554aad TT |
7083 | |
7084 | VEC_free (dwarf2_per_cu_ptr, dwarf2_per_objfile->just_read_cus); | |
7085 | } | |
7086 | ||
9cdd5dbd | 7087 | /* Generate full symbol information for PER_CU, whose DIEs have |
10b3939b DJ |
7088 | already been loaded into memory. */ |
7089 | ||
7090 | static void | |
95554aad TT |
7091 | process_full_comp_unit (struct dwarf2_per_cu_data *per_cu, |
7092 | enum language pretend_language) | |
10b3939b | 7093 | { |
10b3939b | 7094 | struct dwarf2_cu *cu = per_cu->cu; |
9291a0cd | 7095 | struct objfile *objfile = per_cu->objfile; |
10b3939b DJ |
7096 | CORE_ADDR lowpc, highpc; |
7097 | struct symtab *symtab; | |
3da10d80 | 7098 | struct cleanup *back_to, *delayed_list_cleanup; |
10b3939b | 7099 | CORE_ADDR baseaddr; |
4359dff1 | 7100 | struct block *static_block; |
10b3939b DJ |
7101 | |
7102 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
7103 | ||
10b3939b DJ |
7104 | buildsym_init (); |
7105 | back_to = make_cleanup (really_free_pendings, NULL); | |
3da10d80 | 7106 | delayed_list_cleanup = make_cleanup (free_delayed_list, cu); |
10b3939b DJ |
7107 | |
7108 | cu->list_in_scope = &file_symbols; | |
c906108c | 7109 | |
95554aad TT |
7110 | cu->language = pretend_language; |
7111 | cu->language_defn = language_def (cu->language); | |
7112 | ||
c906108c | 7113 | /* Do line number decoding in read_file_scope () */ |
10b3939b | 7114 | process_die (cu->dies, cu); |
c906108c | 7115 | |
a766d390 DE |
7116 | /* For now fudge the Go package. */ |
7117 | if (cu->language == language_go) | |
7118 | fixup_go_packaging (cu); | |
7119 | ||
3da10d80 KS |
7120 | /* Now that we have processed all the DIEs in the CU, all the types |
7121 | should be complete, and it should now be safe to compute all of the | |
7122 | physnames. */ | |
7123 | compute_delayed_physnames (cu); | |
7124 | do_cleanups (delayed_list_cleanup); | |
7125 | ||
fae299cd DC |
7126 | /* Some compilers don't define a DW_AT_high_pc attribute for the |
7127 | compilation unit. If the DW_AT_high_pc is missing, synthesize | |
7128 | it, by scanning the DIE's below the compilation unit. */ | |
10b3939b | 7129 | get_scope_pc_bounds (cu->dies, &lowpc, &highpc, cu); |
c906108c | 7130 | |
36586728 TT |
7131 | static_block |
7132 | = end_symtab_get_static_block (highpc + baseaddr, objfile, 0, | |
796a7ff8 | 7133 | per_cu->imported_symtabs != NULL); |
4359dff1 JK |
7134 | |
7135 | /* If the comp unit has DW_AT_ranges, it may have discontiguous ranges. | |
7136 | Also, DW_AT_ranges may record ranges not belonging to any child DIEs | |
7137 | (such as virtual method tables). Record the ranges in STATIC_BLOCK's | |
7138 | addrmap to help ensure it has an accurate map of pc values belonging to | |
7139 | this comp unit. */ | |
7140 | dwarf2_record_block_ranges (cu->dies, static_block, baseaddr, cu); | |
7141 | ||
7142 | symtab = end_symtab_from_static_block (static_block, objfile, | |
7143 | SECT_OFF_TEXT (objfile), 0); | |
c906108c | 7144 | |
8be455d7 | 7145 | if (symtab != NULL) |
c906108c | 7146 | { |
df15bd07 | 7147 | int gcc_4_minor = producer_is_gcc_ge_4 (cu->producer); |
4632c0d0 | 7148 | |
8be455d7 JK |
7149 | /* Set symtab language to language from DW_AT_language. If the |
7150 | compilation is from a C file generated by language preprocessors, do | |
7151 | not set the language if it was already deduced by start_subfile. */ | |
7152 | if (!(cu->language == language_c && symtab->language != language_c)) | |
7153 | symtab->language = cu->language; | |
7154 | ||
7155 | /* GCC-4.0 has started to support -fvar-tracking. GCC-3.x still can | |
7156 | produce DW_AT_location with location lists but it can be possibly | |
ab260dad JK |
7157 | invalid without -fvar-tracking. Still up to GCC-4.4.x incl. 4.4.0 |
7158 | there were bugs in prologue debug info, fixed later in GCC-4.5 | |
7159 | by "unwind info for epilogues" patch (which is not directly related). | |
8be455d7 JK |
7160 | |
7161 | For -gdwarf-4 type units LOCATIONS_VALID indication is fortunately not | |
7162 | needed, it would be wrong due to missing DW_AT_producer there. | |
7163 | ||
7164 | Still one can confuse GDB by using non-standard GCC compilation | |
7165 | options - this waits on GCC PR other/32998 (-frecord-gcc-switches). | |
7166 | */ | |
ab260dad | 7167 | if (cu->has_loclist && gcc_4_minor >= 5) |
8be455d7 | 7168 | symtab->locations_valid = 1; |
e0d00bc7 JK |
7169 | |
7170 | if (gcc_4_minor >= 5) | |
7171 | symtab->epilogue_unwind_valid = 1; | |
96408a79 SA |
7172 | |
7173 | symtab->call_site_htab = cu->call_site_htab; | |
c906108c | 7174 | } |
9291a0cd TT |
7175 | |
7176 | if (dwarf2_per_objfile->using_index) | |
7177 | per_cu->v.quick->symtab = symtab; | |
7178 | else | |
7179 | { | |
7180 | struct partial_symtab *pst = per_cu->v.psymtab; | |
7181 | pst->symtab = symtab; | |
7182 | pst->readin = 1; | |
7183 | } | |
c906108c | 7184 | |
95554aad TT |
7185 | /* Push it for inclusion processing later. */ |
7186 | VEC_safe_push (dwarf2_per_cu_ptr, dwarf2_per_objfile->just_read_cus, per_cu); | |
7187 | ||
c906108c | 7188 | do_cleanups (back_to); |
f4dc4d17 | 7189 | } |
45cfd468 | 7190 | |
f4dc4d17 DE |
7191 | /* Generate full symbol information for type unit PER_CU, whose DIEs have |
7192 | already been loaded into memory. */ | |
7193 | ||
7194 | static void | |
7195 | process_full_type_unit (struct dwarf2_per_cu_data *per_cu, | |
7196 | enum language pretend_language) | |
7197 | { | |
7198 | struct dwarf2_cu *cu = per_cu->cu; | |
7199 | struct objfile *objfile = per_cu->objfile; | |
7200 | struct symtab *symtab; | |
7201 | struct cleanup *back_to, *delayed_list_cleanup; | |
7202 | ||
7203 | buildsym_init (); | |
7204 | back_to = make_cleanup (really_free_pendings, NULL); | |
7205 | delayed_list_cleanup = make_cleanup (free_delayed_list, cu); | |
7206 | ||
7207 | cu->list_in_scope = &file_symbols; | |
7208 | ||
7209 | cu->language = pretend_language; | |
7210 | cu->language_defn = language_def (cu->language); | |
7211 | ||
7212 | /* The symbol tables are set up in read_type_unit_scope. */ | |
7213 | process_die (cu->dies, cu); | |
7214 | ||
7215 | /* For now fudge the Go package. */ | |
7216 | if (cu->language == language_go) | |
7217 | fixup_go_packaging (cu); | |
7218 | ||
7219 | /* Now that we have processed all the DIEs in the CU, all the types | |
7220 | should be complete, and it should now be safe to compute all of the | |
7221 | physnames. */ | |
7222 | compute_delayed_physnames (cu); | |
7223 | do_cleanups (delayed_list_cleanup); | |
7224 | ||
7225 | /* TUs share symbol tables. | |
7226 | If this is the first TU to use this symtab, complete the construction | |
094b34ac DE |
7227 | of it with end_expandable_symtab. Otherwise, complete the addition of |
7228 | this TU's symbols to the existing symtab. */ | |
796a7ff8 | 7229 | if (per_cu->type_unit_group->primary_symtab == NULL) |
45cfd468 | 7230 | { |
f4dc4d17 | 7231 | symtab = end_expandable_symtab (0, objfile, SECT_OFF_TEXT (objfile)); |
796a7ff8 | 7232 | per_cu->type_unit_group->primary_symtab = symtab; |
f4dc4d17 DE |
7233 | |
7234 | if (symtab != NULL) | |
7235 | { | |
7236 | /* Set symtab language to language from DW_AT_language. If the | |
7237 | compilation is from a C file generated by language preprocessors, | |
7238 | do not set the language if it was already deduced by | |
7239 | start_subfile. */ | |
7240 | if (!(cu->language == language_c && symtab->language != language_c)) | |
7241 | symtab->language = cu->language; | |
7242 | } | |
7243 | } | |
7244 | else | |
7245 | { | |
7246 | augment_type_symtab (objfile, | |
796a7ff8 DE |
7247 | per_cu->type_unit_group->primary_symtab); |
7248 | symtab = per_cu->type_unit_group->primary_symtab; | |
f4dc4d17 DE |
7249 | } |
7250 | ||
7251 | if (dwarf2_per_objfile->using_index) | |
7252 | per_cu->v.quick->symtab = symtab; | |
7253 | else | |
7254 | { | |
7255 | struct partial_symtab *pst = per_cu->v.psymtab; | |
7256 | pst->symtab = symtab; | |
7257 | pst->readin = 1; | |
45cfd468 | 7258 | } |
f4dc4d17 DE |
7259 | |
7260 | do_cleanups (back_to); | |
c906108c SS |
7261 | } |
7262 | ||
95554aad TT |
7263 | /* Process an imported unit DIE. */ |
7264 | ||
7265 | static void | |
7266 | process_imported_unit_die (struct die_info *die, struct dwarf2_cu *cu) | |
7267 | { | |
7268 | struct attribute *attr; | |
7269 | ||
f4dc4d17 DE |
7270 | /* For now we don't handle imported units in type units. */ |
7271 | if (cu->per_cu->is_debug_types) | |
7272 | { | |
7273 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
7274 | " supported in type units [in module %s]"), | |
7275 | cu->objfile->name); | |
7276 | } | |
7277 | ||
95554aad TT |
7278 | attr = dwarf2_attr (die, DW_AT_import, cu); |
7279 | if (attr != NULL) | |
7280 | { | |
7281 | struct dwarf2_per_cu_data *per_cu; | |
7282 | struct symtab *imported_symtab; | |
7283 | sect_offset offset; | |
36586728 | 7284 | int is_dwz; |
95554aad TT |
7285 | |
7286 | offset = dwarf2_get_ref_die_offset (attr); | |
36586728 TT |
7287 | is_dwz = (attr->form == DW_FORM_GNU_ref_alt || cu->per_cu->is_dwz); |
7288 | per_cu = dwarf2_find_containing_comp_unit (offset, is_dwz, cu->objfile); | |
95554aad TT |
7289 | |
7290 | /* Queue the unit, if needed. */ | |
7291 | if (maybe_queue_comp_unit (cu, per_cu, cu->language)) | |
7292 | load_full_comp_unit (per_cu, cu->language); | |
7293 | ||
796a7ff8 | 7294 | VEC_safe_push (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs, |
95554aad TT |
7295 | per_cu); |
7296 | } | |
7297 | } | |
7298 | ||
c906108c SS |
7299 | /* Process a die and its children. */ |
7300 | ||
7301 | static void | |
e7c27a73 | 7302 | process_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
7303 | { |
7304 | switch (die->tag) | |
7305 | { | |
7306 | case DW_TAG_padding: | |
7307 | break; | |
7308 | case DW_TAG_compile_unit: | |
95554aad | 7309 | case DW_TAG_partial_unit: |
e7c27a73 | 7310 | read_file_scope (die, cu); |
c906108c | 7311 | break; |
348e048f DE |
7312 | case DW_TAG_type_unit: |
7313 | read_type_unit_scope (die, cu); | |
7314 | break; | |
c906108c | 7315 | case DW_TAG_subprogram: |
c906108c | 7316 | case DW_TAG_inlined_subroutine: |
edb3359d | 7317 | read_func_scope (die, cu); |
c906108c SS |
7318 | break; |
7319 | case DW_TAG_lexical_block: | |
14898363 L |
7320 | case DW_TAG_try_block: |
7321 | case DW_TAG_catch_block: | |
e7c27a73 | 7322 | read_lexical_block_scope (die, cu); |
c906108c | 7323 | break; |
96408a79 SA |
7324 | case DW_TAG_GNU_call_site: |
7325 | read_call_site_scope (die, cu); | |
7326 | break; | |
c906108c | 7327 | case DW_TAG_class_type: |
680b30c7 | 7328 | case DW_TAG_interface_type: |
c906108c SS |
7329 | case DW_TAG_structure_type: |
7330 | case DW_TAG_union_type: | |
134d01f1 | 7331 | process_structure_scope (die, cu); |
c906108c SS |
7332 | break; |
7333 | case DW_TAG_enumeration_type: | |
134d01f1 | 7334 | process_enumeration_scope (die, cu); |
c906108c | 7335 | break; |
134d01f1 | 7336 | |
f792889a DJ |
7337 | /* These dies have a type, but processing them does not create |
7338 | a symbol or recurse to process the children. Therefore we can | |
7339 | read them on-demand through read_type_die. */ | |
c906108c | 7340 | case DW_TAG_subroutine_type: |
72019c9c | 7341 | case DW_TAG_set_type: |
c906108c | 7342 | case DW_TAG_array_type: |
c906108c | 7343 | case DW_TAG_pointer_type: |
c906108c | 7344 | case DW_TAG_ptr_to_member_type: |
c906108c | 7345 | case DW_TAG_reference_type: |
c906108c | 7346 | case DW_TAG_string_type: |
c906108c | 7347 | break; |
134d01f1 | 7348 | |
c906108c | 7349 | case DW_TAG_base_type: |
a02abb62 | 7350 | case DW_TAG_subrange_type: |
cb249c71 | 7351 | case DW_TAG_typedef: |
134d01f1 DJ |
7352 | /* Add a typedef symbol for the type definition, if it has a |
7353 | DW_AT_name. */ | |
f792889a | 7354 | new_symbol (die, read_type_die (die, cu), cu); |
a02abb62 | 7355 | break; |
c906108c | 7356 | case DW_TAG_common_block: |
e7c27a73 | 7357 | read_common_block (die, cu); |
c906108c SS |
7358 | break; |
7359 | case DW_TAG_common_inclusion: | |
7360 | break; | |
d9fa45fe | 7361 | case DW_TAG_namespace: |
4d4ec4e5 | 7362 | cu->processing_has_namespace_info = 1; |
e7c27a73 | 7363 | read_namespace (die, cu); |
d9fa45fe | 7364 | break; |
5d7cb8df | 7365 | case DW_TAG_module: |
4d4ec4e5 | 7366 | cu->processing_has_namespace_info = 1; |
5d7cb8df JK |
7367 | read_module (die, cu); |
7368 | break; | |
d9fa45fe DC |
7369 | case DW_TAG_imported_declaration: |
7370 | case DW_TAG_imported_module: | |
4d4ec4e5 | 7371 | cu->processing_has_namespace_info = 1; |
27aa8d6a SW |
7372 | if (die->child != NULL && (die->tag == DW_TAG_imported_declaration |
7373 | || cu->language != language_fortran)) | |
7374 | complaint (&symfile_complaints, _("Tag '%s' has unexpected children"), | |
7375 | dwarf_tag_name (die->tag)); | |
7376 | read_import_statement (die, cu); | |
d9fa45fe | 7377 | break; |
95554aad TT |
7378 | |
7379 | case DW_TAG_imported_unit: | |
7380 | process_imported_unit_die (die, cu); | |
7381 | break; | |
7382 | ||
c906108c | 7383 | default: |
e7c27a73 | 7384 | new_symbol (die, NULL, cu); |
c906108c SS |
7385 | break; |
7386 | } | |
7387 | } | |
ca69b9e6 DE |
7388 | \f |
7389 | /* DWARF name computation. */ | |
c906108c | 7390 | |
94af9270 KS |
7391 | /* A helper function for dwarf2_compute_name which determines whether DIE |
7392 | needs to have the name of the scope prepended to the name listed in the | |
7393 | die. */ | |
7394 | ||
7395 | static int | |
7396 | die_needs_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
7397 | { | |
1c809c68 TT |
7398 | struct attribute *attr; |
7399 | ||
94af9270 KS |
7400 | switch (die->tag) |
7401 | { | |
7402 | case DW_TAG_namespace: | |
7403 | case DW_TAG_typedef: | |
7404 | case DW_TAG_class_type: | |
7405 | case DW_TAG_interface_type: | |
7406 | case DW_TAG_structure_type: | |
7407 | case DW_TAG_union_type: | |
7408 | case DW_TAG_enumeration_type: | |
7409 | case DW_TAG_enumerator: | |
7410 | case DW_TAG_subprogram: | |
7411 | case DW_TAG_member: | |
7412 | return 1; | |
7413 | ||
7414 | case DW_TAG_variable: | |
c2b0a229 | 7415 | case DW_TAG_constant: |
94af9270 KS |
7416 | /* We only need to prefix "globally" visible variables. These include |
7417 | any variable marked with DW_AT_external or any variable that | |
7418 | lives in a namespace. [Variables in anonymous namespaces | |
7419 | require prefixing, but they are not DW_AT_external.] */ | |
7420 | ||
7421 | if (dwarf2_attr (die, DW_AT_specification, cu)) | |
7422 | { | |
7423 | struct dwarf2_cu *spec_cu = cu; | |
9a619af0 | 7424 | |
94af9270 KS |
7425 | return die_needs_namespace (die_specification (die, &spec_cu), |
7426 | spec_cu); | |
7427 | } | |
7428 | ||
1c809c68 | 7429 | attr = dwarf2_attr (die, DW_AT_external, cu); |
f55ee35c JK |
7430 | if (attr == NULL && die->parent->tag != DW_TAG_namespace |
7431 | && die->parent->tag != DW_TAG_module) | |
1c809c68 TT |
7432 | return 0; |
7433 | /* A variable in a lexical block of some kind does not need a | |
7434 | namespace, even though in C++ such variables may be external | |
7435 | and have a mangled name. */ | |
7436 | if (die->parent->tag == DW_TAG_lexical_block | |
7437 | || die->parent->tag == DW_TAG_try_block | |
1054b214 TT |
7438 | || die->parent->tag == DW_TAG_catch_block |
7439 | || die->parent->tag == DW_TAG_subprogram) | |
1c809c68 TT |
7440 | return 0; |
7441 | return 1; | |
94af9270 KS |
7442 | |
7443 | default: | |
7444 | return 0; | |
7445 | } | |
7446 | } | |
7447 | ||
98bfdba5 PA |
7448 | /* Retrieve the last character from a mem_file. */ |
7449 | ||
7450 | static void | |
7451 | do_ui_file_peek_last (void *object, const char *buffer, long length) | |
7452 | { | |
7453 | char *last_char_p = (char *) object; | |
7454 | ||
7455 | if (length > 0) | |
7456 | *last_char_p = buffer[length - 1]; | |
7457 | } | |
7458 | ||
94af9270 | 7459 | /* Compute the fully qualified name of DIE in CU. If PHYSNAME is nonzero, |
a766d390 DE |
7460 | compute the physname for the object, which include a method's: |
7461 | - formal parameters (C++/Java), | |
7462 | - receiver type (Go), | |
7463 | - return type (Java). | |
7464 | ||
7465 | The term "physname" is a bit confusing. | |
7466 | For C++, for example, it is the demangled name. | |
7467 | For Go, for example, it's the mangled name. | |
94af9270 | 7468 | |
af6b7be1 JB |
7469 | For Ada, return the DIE's linkage name rather than the fully qualified |
7470 | name. PHYSNAME is ignored.. | |
7471 | ||
94af9270 KS |
7472 | The result is allocated on the objfile_obstack and canonicalized. */ |
7473 | ||
7474 | static const char * | |
15d034d0 TT |
7475 | dwarf2_compute_name (const char *name, |
7476 | struct die_info *die, struct dwarf2_cu *cu, | |
94af9270 KS |
7477 | int physname) |
7478 | { | |
bb5ed363 DE |
7479 | struct objfile *objfile = cu->objfile; |
7480 | ||
94af9270 KS |
7481 | if (name == NULL) |
7482 | name = dwarf2_name (die, cu); | |
7483 | ||
f55ee35c JK |
7484 | /* For Fortran GDB prefers DW_AT_*linkage_name if present but otherwise |
7485 | compute it by typename_concat inside GDB. */ | |
7486 | if (cu->language == language_ada | |
7487 | || (cu->language == language_fortran && physname)) | |
7488 | { | |
7489 | /* For Ada unit, we prefer the linkage name over the name, as | |
7490 | the former contains the exported name, which the user expects | |
7491 | to be able to reference. Ideally, we want the user to be able | |
7492 | to reference this entity using either natural or linkage name, | |
7493 | but we haven't started looking at this enhancement yet. */ | |
7494 | struct attribute *attr; | |
7495 | ||
7496 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
7497 | if (attr == NULL) | |
7498 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
7499 | if (attr && DW_STRING (attr)) | |
7500 | return DW_STRING (attr); | |
7501 | } | |
7502 | ||
94af9270 KS |
7503 | /* These are the only languages we know how to qualify names in. */ |
7504 | if (name != NULL | |
f55ee35c JK |
7505 | && (cu->language == language_cplus || cu->language == language_java |
7506 | || cu->language == language_fortran)) | |
94af9270 KS |
7507 | { |
7508 | if (die_needs_namespace (die, cu)) | |
7509 | { | |
7510 | long length; | |
0d5cff50 | 7511 | const char *prefix; |
94af9270 KS |
7512 | struct ui_file *buf; |
7513 | ||
7514 | prefix = determine_prefix (die, cu); | |
7515 | buf = mem_fileopen (); | |
7516 | if (*prefix != '\0') | |
7517 | { | |
f55ee35c JK |
7518 | char *prefixed_name = typename_concat (NULL, prefix, name, |
7519 | physname, cu); | |
9a619af0 | 7520 | |
94af9270 KS |
7521 | fputs_unfiltered (prefixed_name, buf); |
7522 | xfree (prefixed_name); | |
7523 | } | |
7524 | else | |
62d5b8da | 7525 | fputs_unfiltered (name, buf); |
94af9270 | 7526 | |
98bfdba5 PA |
7527 | /* Template parameters may be specified in the DIE's DW_AT_name, or |
7528 | as children with DW_TAG_template_type_param or | |
7529 | DW_TAG_value_type_param. If the latter, add them to the name | |
7530 | here. If the name already has template parameters, then | |
7531 | skip this step; some versions of GCC emit both, and | |
7532 | it is more efficient to use the pre-computed name. | |
7533 | ||
7534 | Something to keep in mind about this process: it is very | |
7535 | unlikely, or in some cases downright impossible, to produce | |
7536 | something that will match the mangled name of a function. | |
7537 | If the definition of the function has the same debug info, | |
7538 | we should be able to match up with it anyway. But fallbacks | |
7539 | using the minimal symbol, for instance to find a method | |
7540 | implemented in a stripped copy of libstdc++, will not work. | |
7541 | If we do not have debug info for the definition, we will have to | |
7542 | match them up some other way. | |
7543 | ||
7544 | When we do name matching there is a related problem with function | |
7545 | templates; two instantiated function templates are allowed to | |
7546 | differ only by their return types, which we do not add here. */ | |
7547 | ||
7548 | if (cu->language == language_cplus && strchr (name, '<') == NULL) | |
7549 | { | |
7550 | struct attribute *attr; | |
7551 | struct die_info *child; | |
7552 | int first = 1; | |
7553 | ||
7554 | die->building_fullname = 1; | |
7555 | ||
7556 | for (child = die->child; child != NULL; child = child->sibling) | |
7557 | { | |
7558 | struct type *type; | |
12df843f | 7559 | LONGEST value; |
98bfdba5 PA |
7560 | gdb_byte *bytes; |
7561 | struct dwarf2_locexpr_baton *baton; | |
7562 | struct value *v; | |
7563 | ||
7564 | if (child->tag != DW_TAG_template_type_param | |
7565 | && child->tag != DW_TAG_template_value_param) | |
7566 | continue; | |
7567 | ||
7568 | if (first) | |
7569 | { | |
7570 | fputs_unfiltered ("<", buf); | |
7571 | first = 0; | |
7572 | } | |
7573 | else | |
7574 | fputs_unfiltered (", ", buf); | |
7575 | ||
7576 | attr = dwarf2_attr (child, DW_AT_type, cu); | |
7577 | if (attr == NULL) | |
7578 | { | |
7579 | complaint (&symfile_complaints, | |
7580 | _("template parameter missing DW_AT_type")); | |
7581 | fputs_unfiltered ("UNKNOWN_TYPE", buf); | |
7582 | continue; | |
7583 | } | |
7584 | type = die_type (child, cu); | |
7585 | ||
7586 | if (child->tag == DW_TAG_template_type_param) | |
7587 | { | |
79d43c61 | 7588 | c_print_type (type, "", buf, -1, 0, &type_print_raw_options); |
98bfdba5 PA |
7589 | continue; |
7590 | } | |
7591 | ||
7592 | attr = dwarf2_attr (child, DW_AT_const_value, cu); | |
7593 | if (attr == NULL) | |
7594 | { | |
7595 | complaint (&symfile_complaints, | |
3e43a32a MS |
7596 | _("template parameter missing " |
7597 | "DW_AT_const_value")); | |
98bfdba5 PA |
7598 | fputs_unfiltered ("UNKNOWN_VALUE", buf); |
7599 | continue; | |
7600 | } | |
7601 | ||
7602 | dwarf2_const_value_attr (attr, type, name, | |
7603 | &cu->comp_unit_obstack, cu, | |
7604 | &value, &bytes, &baton); | |
7605 | ||
7606 | if (TYPE_NOSIGN (type)) | |
7607 | /* GDB prints characters as NUMBER 'CHAR'. If that's | |
7608 | changed, this can use value_print instead. */ | |
7609 | c_printchar (value, type, buf); | |
7610 | else | |
7611 | { | |
7612 | struct value_print_options opts; | |
7613 | ||
7614 | if (baton != NULL) | |
7615 | v = dwarf2_evaluate_loc_desc (type, NULL, | |
7616 | baton->data, | |
7617 | baton->size, | |
7618 | baton->per_cu); | |
7619 | else if (bytes != NULL) | |
7620 | { | |
7621 | v = allocate_value (type); | |
7622 | memcpy (value_contents_writeable (v), bytes, | |
7623 | TYPE_LENGTH (type)); | |
7624 | } | |
7625 | else | |
7626 | v = value_from_longest (type, value); | |
7627 | ||
3e43a32a MS |
7628 | /* Specify decimal so that we do not depend on |
7629 | the radix. */ | |
98bfdba5 PA |
7630 | get_formatted_print_options (&opts, 'd'); |
7631 | opts.raw = 1; | |
7632 | value_print (v, buf, &opts); | |
7633 | release_value (v); | |
7634 | value_free (v); | |
7635 | } | |
7636 | } | |
7637 | ||
7638 | die->building_fullname = 0; | |
7639 | ||
7640 | if (!first) | |
7641 | { | |
7642 | /* Close the argument list, with a space if necessary | |
7643 | (nested templates). */ | |
7644 | char last_char = '\0'; | |
7645 | ui_file_put (buf, do_ui_file_peek_last, &last_char); | |
7646 | if (last_char == '>') | |
7647 | fputs_unfiltered (" >", buf); | |
7648 | else | |
7649 | fputs_unfiltered (">", buf); | |
7650 | } | |
7651 | } | |
7652 | ||
94af9270 KS |
7653 | /* For Java and C++ methods, append formal parameter type |
7654 | information, if PHYSNAME. */ | |
6e70227d | 7655 | |
94af9270 KS |
7656 | if (physname && die->tag == DW_TAG_subprogram |
7657 | && (cu->language == language_cplus | |
7658 | || cu->language == language_java)) | |
7659 | { | |
7660 | struct type *type = read_type_die (die, cu); | |
7661 | ||
79d43c61 TT |
7662 | c_type_print_args (type, buf, 1, cu->language, |
7663 | &type_print_raw_options); | |
94af9270 KS |
7664 | |
7665 | if (cu->language == language_java) | |
7666 | { | |
7667 | /* For java, we must append the return type to method | |
0963b4bd | 7668 | names. */ |
94af9270 KS |
7669 | if (die->tag == DW_TAG_subprogram) |
7670 | java_print_type (TYPE_TARGET_TYPE (type), "", buf, | |
79d43c61 | 7671 | 0, 0, &type_print_raw_options); |
94af9270 KS |
7672 | } |
7673 | else if (cu->language == language_cplus) | |
7674 | { | |
60430eff DJ |
7675 | /* Assume that an artificial first parameter is |
7676 | "this", but do not crash if it is not. RealView | |
7677 | marks unnamed (and thus unused) parameters as | |
7678 | artificial; there is no way to differentiate | |
7679 | the two cases. */ | |
94af9270 KS |
7680 | if (TYPE_NFIELDS (type) > 0 |
7681 | && TYPE_FIELD_ARTIFICIAL (type, 0) | |
60430eff | 7682 | && TYPE_CODE (TYPE_FIELD_TYPE (type, 0)) == TYPE_CODE_PTR |
3e43a32a MS |
7683 | && TYPE_CONST (TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, |
7684 | 0)))) | |
94af9270 KS |
7685 | fputs_unfiltered (" const", buf); |
7686 | } | |
7687 | } | |
7688 | ||
bb5ed363 | 7689 | name = ui_file_obsavestring (buf, &objfile->objfile_obstack, |
94af9270 KS |
7690 | &length); |
7691 | ui_file_delete (buf); | |
7692 | ||
7693 | if (cu->language == language_cplus) | |
7694 | { | |
15d034d0 | 7695 | const char *cname |
94af9270 | 7696 | = dwarf2_canonicalize_name (name, cu, |
bb5ed363 | 7697 | &objfile->objfile_obstack); |
9a619af0 | 7698 | |
94af9270 KS |
7699 | if (cname != NULL) |
7700 | name = cname; | |
7701 | } | |
7702 | } | |
7703 | } | |
7704 | ||
7705 | return name; | |
7706 | } | |
7707 | ||
0114d602 DJ |
7708 | /* Return the fully qualified name of DIE, based on its DW_AT_name. |
7709 | If scope qualifiers are appropriate they will be added. The result | |
7710 | will be allocated on the objfile_obstack, or NULL if the DIE does | |
94af9270 KS |
7711 | not have a name. NAME may either be from a previous call to |
7712 | dwarf2_name or NULL. | |
7713 | ||
0963b4bd | 7714 | The output string will be canonicalized (if C++/Java). */ |
0114d602 DJ |
7715 | |
7716 | static const char * | |
15d034d0 | 7717 | dwarf2_full_name (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
0114d602 | 7718 | { |
94af9270 KS |
7719 | return dwarf2_compute_name (name, die, cu, 0); |
7720 | } | |
0114d602 | 7721 | |
94af9270 KS |
7722 | /* Construct a physname for the given DIE in CU. NAME may either be |
7723 | from a previous call to dwarf2_name or NULL. The result will be | |
7724 | allocated on the objfile_objstack or NULL if the DIE does not have a | |
7725 | name. | |
0114d602 | 7726 | |
94af9270 | 7727 | The output string will be canonicalized (if C++/Java). */ |
0114d602 | 7728 | |
94af9270 | 7729 | static const char * |
15d034d0 | 7730 | dwarf2_physname (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
94af9270 | 7731 | { |
bb5ed363 | 7732 | struct objfile *objfile = cu->objfile; |
900e11f9 JK |
7733 | struct attribute *attr; |
7734 | const char *retval, *mangled = NULL, *canon = NULL; | |
7735 | struct cleanup *back_to; | |
7736 | int need_copy = 1; | |
7737 | ||
7738 | /* In this case dwarf2_compute_name is just a shortcut not building anything | |
7739 | on its own. */ | |
7740 | if (!die_needs_namespace (die, cu)) | |
7741 | return dwarf2_compute_name (name, die, cu, 1); | |
7742 | ||
7743 | back_to = make_cleanup (null_cleanup, NULL); | |
7744 | ||
7745 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
7746 | if (!attr) | |
7747 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
7748 | ||
7749 | /* DW_AT_linkage_name is missing in some cases - depend on what GDB | |
7750 | has computed. */ | |
7751 | if (attr && DW_STRING (attr)) | |
7752 | { | |
7753 | char *demangled; | |
7754 | ||
7755 | mangled = DW_STRING (attr); | |
7756 | ||
7757 | /* Use DMGL_RET_DROP for C++ template functions to suppress their return | |
7758 | type. It is easier for GDB users to search for such functions as | |
7759 | `name(params)' than `long name(params)'. In such case the minimal | |
7760 | symbol names do not match the full symbol names but for template | |
7761 | functions there is never a need to look up their definition from their | |
7762 | declaration so the only disadvantage remains the minimal symbol | |
7763 | variant `long name(params)' does not have the proper inferior type. | |
7764 | */ | |
7765 | ||
a766d390 DE |
7766 | if (cu->language == language_go) |
7767 | { | |
7768 | /* This is a lie, but we already lie to the caller new_symbol_full. | |
7769 | new_symbol_full assumes we return the mangled name. | |
7770 | This just undoes that lie until things are cleaned up. */ | |
7771 | demangled = NULL; | |
7772 | } | |
7773 | else | |
7774 | { | |
7775 | demangled = cplus_demangle (mangled, | |
7776 | (DMGL_PARAMS | DMGL_ANSI | |
7777 | | (cu->language == language_java | |
7778 | ? DMGL_JAVA | DMGL_RET_POSTFIX | |
7779 | : DMGL_RET_DROP))); | |
7780 | } | |
900e11f9 JK |
7781 | if (demangled) |
7782 | { | |
7783 | make_cleanup (xfree, demangled); | |
7784 | canon = demangled; | |
7785 | } | |
7786 | else | |
7787 | { | |
7788 | canon = mangled; | |
7789 | need_copy = 0; | |
7790 | } | |
7791 | } | |
7792 | ||
7793 | if (canon == NULL || check_physname) | |
7794 | { | |
7795 | const char *physname = dwarf2_compute_name (name, die, cu, 1); | |
7796 | ||
7797 | if (canon != NULL && strcmp (physname, canon) != 0) | |
7798 | { | |
7799 | /* It may not mean a bug in GDB. The compiler could also | |
7800 | compute DW_AT_linkage_name incorrectly. But in such case | |
7801 | GDB would need to be bug-to-bug compatible. */ | |
7802 | ||
7803 | complaint (&symfile_complaints, | |
7804 | _("Computed physname <%s> does not match demangled <%s> " | |
7805 | "(from linkage <%s>) - DIE at 0x%x [in module %s]"), | |
b64f50a1 | 7806 | physname, canon, mangled, die->offset.sect_off, objfile->name); |
900e11f9 JK |
7807 | |
7808 | /* Prefer DW_AT_linkage_name (in the CANON form) - when it | |
7809 | is available here - over computed PHYSNAME. It is safer | |
7810 | against both buggy GDB and buggy compilers. */ | |
7811 | ||
7812 | retval = canon; | |
7813 | } | |
7814 | else | |
7815 | { | |
7816 | retval = physname; | |
7817 | need_copy = 0; | |
7818 | } | |
7819 | } | |
7820 | else | |
7821 | retval = canon; | |
7822 | ||
7823 | if (need_copy) | |
10f0c4bb | 7824 | retval = obstack_copy0 (&objfile->objfile_obstack, retval, strlen (retval)); |
900e11f9 JK |
7825 | |
7826 | do_cleanups (back_to); | |
7827 | return retval; | |
0114d602 DJ |
7828 | } |
7829 | ||
27aa8d6a SW |
7830 | /* Read the import statement specified by the given die and record it. */ |
7831 | ||
7832 | static void | |
7833 | read_import_statement (struct die_info *die, struct dwarf2_cu *cu) | |
7834 | { | |
bb5ed363 | 7835 | struct objfile *objfile = cu->objfile; |
27aa8d6a | 7836 | struct attribute *import_attr; |
32019081 | 7837 | struct die_info *imported_die, *child_die; |
de4affc9 | 7838 | struct dwarf2_cu *imported_cu; |
27aa8d6a | 7839 | const char *imported_name; |
794684b6 | 7840 | const char *imported_name_prefix; |
13387711 SW |
7841 | const char *canonical_name; |
7842 | const char *import_alias; | |
7843 | const char *imported_declaration = NULL; | |
794684b6 | 7844 | const char *import_prefix; |
32019081 JK |
7845 | VEC (const_char_ptr) *excludes = NULL; |
7846 | struct cleanup *cleanups; | |
13387711 | 7847 | |
27aa8d6a SW |
7848 | import_attr = dwarf2_attr (die, DW_AT_import, cu); |
7849 | if (import_attr == NULL) | |
7850 | { | |
7851 | complaint (&symfile_complaints, _("Tag '%s' has no DW_AT_import"), | |
7852 | dwarf_tag_name (die->tag)); | |
7853 | return; | |
7854 | } | |
7855 | ||
de4affc9 CC |
7856 | imported_cu = cu; |
7857 | imported_die = follow_die_ref_or_sig (die, import_attr, &imported_cu); | |
7858 | imported_name = dwarf2_name (imported_die, imported_cu); | |
27aa8d6a SW |
7859 | if (imported_name == NULL) |
7860 | { | |
7861 | /* GCC bug: https://bugzilla.redhat.com/show_bug.cgi?id=506524 | |
7862 | ||
7863 | The import in the following code: | |
7864 | namespace A | |
7865 | { | |
7866 | typedef int B; | |
7867 | } | |
7868 | ||
7869 | int main () | |
7870 | { | |
7871 | using A::B; | |
7872 | B b; | |
7873 | return b; | |
7874 | } | |
7875 | ||
7876 | ... | |
7877 | <2><51>: Abbrev Number: 3 (DW_TAG_imported_declaration) | |
7878 | <52> DW_AT_decl_file : 1 | |
7879 | <53> DW_AT_decl_line : 6 | |
7880 | <54> DW_AT_import : <0x75> | |
7881 | <2><58>: Abbrev Number: 4 (DW_TAG_typedef) | |
7882 | <59> DW_AT_name : B | |
7883 | <5b> DW_AT_decl_file : 1 | |
7884 | <5c> DW_AT_decl_line : 2 | |
7885 | <5d> DW_AT_type : <0x6e> | |
7886 | ... | |
7887 | <1><75>: Abbrev Number: 7 (DW_TAG_base_type) | |
7888 | <76> DW_AT_byte_size : 4 | |
7889 | <77> DW_AT_encoding : 5 (signed) | |
7890 | ||
7891 | imports the wrong die ( 0x75 instead of 0x58 ). | |
7892 | This case will be ignored until the gcc bug is fixed. */ | |
7893 | return; | |
7894 | } | |
7895 | ||
82856980 SW |
7896 | /* Figure out the local name after import. */ |
7897 | import_alias = dwarf2_name (die, cu); | |
27aa8d6a | 7898 | |
794684b6 SW |
7899 | /* Figure out where the statement is being imported to. */ |
7900 | import_prefix = determine_prefix (die, cu); | |
7901 | ||
7902 | /* Figure out what the scope of the imported die is and prepend it | |
7903 | to the name of the imported die. */ | |
de4affc9 | 7904 | imported_name_prefix = determine_prefix (imported_die, imported_cu); |
794684b6 | 7905 | |
f55ee35c JK |
7906 | if (imported_die->tag != DW_TAG_namespace |
7907 | && imported_die->tag != DW_TAG_module) | |
794684b6 | 7908 | { |
13387711 SW |
7909 | imported_declaration = imported_name; |
7910 | canonical_name = imported_name_prefix; | |
794684b6 | 7911 | } |
13387711 | 7912 | else if (strlen (imported_name_prefix) > 0) |
12aaed36 TT |
7913 | canonical_name = obconcat (&objfile->objfile_obstack, |
7914 | imported_name_prefix, "::", imported_name, | |
7915 | (char *) NULL); | |
13387711 SW |
7916 | else |
7917 | canonical_name = imported_name; | |
794684b6 | 7918 | |
32019081 JK |
7919 | cleanups = make_cleanup (VEC_cleanup (const_char_ptr), &excludes); |
7920 | ||
7921 | if (die->tag == DW_TAG_imported_module && cu->language == language_fortran) | |
7922 | for (child_die = die->child; child_die && child_die->tag; | |
7923 | child_die = sibling_die (child_die)) | |
7924 | { | |
7925 | /* DWARF-4: A Fortran use statement with a “rename list” may be | |
7926 | represented by an imported module entry with an import attribute | |
7927 | referring to the module and owned entries corresponding to those | |
7928 | entities that are renamed as part of being imported. */ | |
7929 | ||
7930 | if (child_die->tag != DW_TAG_imported_declaration) | |
7931 | { | |
7932 | complaint (&symfile_complaints, | |
7933 | _("child DW_TAG_imported_declaration expected " | |
7934 | "- DIE at 0x%x [in module %s]"), | |
b64f50a1 | 7935 | child_die->offset.sect_off, objfile->name); |
32019081 JK |
7936 | continue; |
7937 | } | |
7938 | ||
7939 | import_attr = dwarf2_attr (child_die, DW_AT_import, cu); | |
7940 | if (import_attr == NULL) | |
7941 | { | |
7942 | complaint (&symfile_complaints, _("Tag '%s' has no DW_AT_import"), | |
7943 | dwarf_tag_name (child_die->tag)); | |
7944 | continue; | |
7945 | } | |
7946 | ||
7947 | imported_cu = cu; | |
7948 | imported_die = follow_die_ref_or_sig (child_die, import_attr, | |
7949 | &imported_cu); | |
7950 | imported_name = dwarf2_name (imported_die, imported_cu); | |
7951 | if (imported_name == NULL) | |
7952 | { | |
7953 | complaint (&symfile_complaints, | |
7954 | _("child DW_TAG_imported_declaration has unknown " | |
7955 | "imported name - DIE at 0x%x [in module %s]"), | |
b64f50a1 | 7956 | child_die->offset.sect_off, objfile->name); |
32019081 JK |
7957 | continue; |
7958 | } | |
7959 | ||
7960 | VEC_safe_push (const_char_ptr, excludes, imported_name); | |
7961 | ||
7962 | process_die (child_die, cu); | |
7963 | } | |
7964 | ||
c0cc3a76 SW |
7965 | cp_add_using_directive (import_prefix, |
7966 | canonical_name, | |
7967 | import_alias, | |
13387711 | 7968 | imported_declaration, |
32019081 | 7969 | excludes, |
12aaed36 | 7970 | 0, |
bb5ed363 | 7971 | &objfile->objfile_obstack); |
32019081 JK |
7972 | |
7973 | do_cleanups (cleanups); | |
27aa8d6a SW |
7974 | } |
7975 | ||
f4dc4d17 | 7976 | /* Cleanup function for handle_DW_AT_stmt_list. */ |
ae2de4f8 | 7977 | |
cb1df416 DJ |
7978 | static void |
7979 | free_cu_line_header (void *arg) | |
7980 | { | |
7981 | struct dwarf2_cu *cu = arg; | |
7982 | ||
7983 | free_line_header (cu->line_header); | |
7984 | cu->line_header = NULL; | |
7985 | } | |
7986 | ||
1b80a9fa JK |
7987 | /* Check for possibly missing DW_AT_comp_dir with relative .debug_line |
7988 | directory paths. GCC SVN r127613 (new option -fdebug-prefix-map) fixed | |
7989 | this, it was first present in GCC release 4.3.0. */ | |
7990 | ||
7991 | static int | |
7992 | producer_is_gcc_lt_4_3 (struct dwarf2_cu *cu) | |
7993 | { | |
7994 | if (!cu->checked_producer) | |
7995 | check_producer (cu); | |
7996 | ||
7997 | return cu->producer_is_gcc_lt_4_3; | |
7998 | } | |
7999 | ||
9291a0cd TT |
8000 | static void |
8001 | find_file_and_directory (struct die_info *die, struct dwarf2_cu *cu, | |
15d034d0 | 8002 | const char **name, const char **comp_dir) |
9291a0cd TT |
8003 | { |
8004 | struct attribute *attr; | |
8005 | ||
8006 | *name = NULL; | |
8007 | *comp_dir = NULL; | |
8008 | ||
8009 | /* Find the filename. Do not use dwarf2_name here, since the filename | |
8010 | is not a source language identifier. */ | |
8011 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
8012 | if (attr) | |
8013 | { | |
8014 | *name = DW_STRING (attr); | |
8015 | } | |
8016 | ||
8017 | attr = dwarf2_attr (die, DW_AT_comp_dir, cu); | |
8018 | if (attr) | |
8019 | *comp_dir = DW_STRING (attr); | |
1b80a9fa JK |
8020 | else if (producer_is_gcc_lt_4_3 (cu) && *name != NULL |
8021 | && IS_ABSOLUTE_PATH (*name)) | |
9291a0cd | 8022 | { |
15d034d0 TT |
8023 | char *d = ldirname (*name); |
8024 | ||
8025 | *comp_dir = d; | |
8026 | if (d != NULL) | |
8027 | make_cleanup (xfree, d); | |
9291a0cd TT |
8028 | } |
8029 | if (*comp_dir != NULL) | |
8030 | { | |
8031 | /* Irix 6.2 native cc prepends <machine>.: to the compilation | |
8032 | directory, get rid of it. */ | |
8033 | char *cp = strchr (*comp_dir, ':'); | |
8034 | ||
8035 | if (cp && cp != *comp_dir && cp[-1] == '.' && cp[1] == '/') | |
8036 | *comp_dir = cp + 1; | |
8037 | } | |
8038 | ||
8039 | if (*name == NULL) | |
8040 | *name = "<unknown>"; | |
8041 | } | |
8042 | ||
f4dc4d17 DE |
8043 | /* Handle DW_AT_stmt_list for a compilation unit. |
8044 | DIE is the DW_TAG_compile_unit die for CU. | |
f3f5162e DE |
8045 | COMP_DIR is the compilation directory. |
8046 | WANT_LINE_INFO is non-zero if the pc/line-number mapping is needed. */ | |
2ab95328 TT |
8047 | |
8048 | static void | |
8049 | handle_DW_AT_stmt_list (struct die_info *die, struct dwarf2_cu *cu, | |
f4dc4d17 | 8050 | const char *comp_dir) |
2ab95328 TT |
8051 | { |
8052 | struct attribute *attr; | |
2ab95328 | 8053 | |
f4dc4d17 DE |
8054 | gdb_assert (! cu->per_cu->is_debug_types); |
8055 | ||
2ab95328 TT |
8056 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
8057 | if (attr) | |
8058 | { | |
8059 | unsigned int line_offset = DW_UNSND (attr); | |
8060 | struct line_header *line_header | |
3019eac3 | 8061 | = dwarf_decode_line_header (line_offset, cu); |
2ab95328 TT |
8062 | |
8063 | if (line_header) | |
dee91e82 DE |
8064 | { |
8065 | cu->line_header = line_header; | |
8066 | make_cleanup (free_cu_line_header, cu); | |
f4dc4d17 | 8067 | dwarf_decode_lines (line_header, comp_dir, cu, NULL, 1); |
dee91e82 | 8068 | } |
2ab95328 TT |
8069 | } |
8070 | } | |
8071 | ||
95554aad | 8072 | /* Process DW_TAG_compile_unit or DW_TAG_partial_unit. */ |
ae2de4f8 | 8073 | |
c906108c | 8074 | static void |
e7c27a73 | 8075 | read_file_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 8076 | { |
dee91e82 | 8077 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
debd256d | 8078 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
2acceee2 | 8079 | CORE_ADDR lowpc = ((CORE_ADDR) -1); |
c906108c SS |
8080 | CORE_ADDR highpc = ((CORE_ADDR) 0); |
8081 | struct attribute *attr; | |
15d034d0 TT |
8082 | const char *name = NULL; |
8083 | const char *comp_dir = NULL; | |
c906108c SS |
8084 | struct die_info *child_die; |
8085 | bfd *abfd = objfile->obfd; | |
e142c38c | 8086 | CORE_ADDR baseaddr; |
6e70227d | 8087 | |
e142c38c | 8088 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c | 8089 | |
fae299cd | 8090 | get_scope_pc_bounds (die, &lowpc, &highpc, cu); |
c906108c SS |
8091 | |
8092 | /* If we didn't find a lowpc, set it to highpc to avoid complaints | |
8093 | from finish_block. */ | |
2acceee2 | 8094 | if (lowpc == ((CORE_ADDR) -1)) |
c906108c SS |
8095 | lowpc = highpc; |
8096 | lowpc += baseaddr; | |
8097 | highpc += baseaddr; | |
8098 | ||
9291a0cd | 8099 | find_file_and_directory (die, cu, &name, &comp_dir); |
e1024ff1 | 8100 | |
95554aad | 8101 | prepare_one_comp_unit (cu, die, cu->language); |
303b6f5d | 8102 | |
f4b8a18d KW |
8103 | /* The XLCL doesn't generate DW_LANG_OpenCL because this attribute is not |
8104 | standardised yet. As a workaround for the language detection we fall | |
8105 | back to the DW_AT_producer string. */ | |
8106 | if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL") != NULL) | |
8107 | cu->language = language_opencl; | |
8108 | ||
3019eac3 DE |
8109 | /* Similar hack for Go. */ |
8110 | if (cu->producer && strstr (cu->producer, "GNU Go ") != NULL) | |
8111 | set_cu_language (DW_LANG_Go, cu); | |
8112 | ||
f4dc4d17 | 8113 | dwarf2_start_symtab (cu, name, comp_dir, lowpc); |
3019eac3 DE |
8114 | |
8115 | /* Decode line number information if present. We do this before | |
8116 | processing child DIEs, so that the line header table is available | |
8117 | for DW_AT_decl_file. */ | |
f4dc4d17 | 8118 | handle_DW_AT_stmt_list (die, cu, comp_dir); |
3019eac3 DE |
8119 | |
8120 | /* Process all dies in compilation unit. */ | |
8121 | if (die->child != NULL) | |
8122 | { | |
8123 | child_die = die->child; | |
8124 | while (child_die && child_die->tag) | |
8125 | { | |
8126 | process_die (child_die, cu); | |
8127 | child_die = sibling_die (child_die); | |
8128 | } | |
8129 | } | |
8130 | ||
8131 | /* Decode macro information, if present. Dwarf 2 macro information | |
8132 | refers to information in the line number info statement program | |
8133 | header, so we can only read it if we've read the header | |
8134 | successfully. */ | |
8135 | attr = dwarf2_attr (die, DW_AT_GNU_macros, cu); | |
8136 | if (attr && cu->line_header) | |
8137 | { | |
8138 | if (dwarf2_attr (die, DW_AT_macro_info, cu)) | |
8139 | complaint (&symfile_complaints, | |
8140 | _("CU refers to both DW_AT_GNU_macros and DW_AT_macro_info")); | |
8141 | ||
09262596 | 8142 | dwarf_decode_macros (cu, DW_UNSND (attr), comp_dir, 1); |
3019eac3 DE |
8143 | } |
8144 | else | |
8145 | { | |
8146 | attr = dwarf2_attr (die, DW_AT_macro_info, cu); | |
8147 | if (attr && cu->line_header) | |
8148 | { | |
8149 | unsigned int macro_offset = DW_UNSND (attr); | |
8150 | ||
09262596 | 8151 | dwarf_decode_macros (cu, macro_offset, comp_dir, 0); |
3019eac3 DE |
8152 | } |
8153 | } | |
8154 | ||
8155 | do_cleanups (back_to); | |
8156 | } | |
8157 | ||
f4dc4d17 DE |
8158 | /* TU version of handle_DW_AT_stmt_list for read_type_unit_scope. |
8159 | Create the set of symtabs used by this TU, or if this TU is sharing | |
8160 | symtabs with another TU and the symtabs have already been created | |
8161 | then restore those symtabs in the line header. | |
8162 | We don't need the pc/line-number mapping for type units. */ | |
3019eac3 DE |
8163 | |
8164 | static void | |
f4dc4d17 | 8165 | setup_type_unit_groups (struct die_info *die, struct dwarf2_cu *cu) |
3019eac3 | 8166 | { |
f4dc4d17 DE |
8167 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8168 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; | |
8169 | struct type_unit_group *tu_group; | |
8170 | int first_time; | |
8171 | struct line_header *lh; | |
3019eac3 | 8172 | struct attribute *attr; |
f4dc4d17 | 8173 | unsigned int i, line_offset; |
3019eac3 | 8174 | |
f4dc4d17 | 8175 | gdb_assert (per_cu->is_debug_types); |
3019eac3 | 8176 | |
f4dc4d17 | 8177 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
3019eac3 | 8178 | |
f4dc4d17 DE |
8179 | /* If we're using .gdb_index (includes -readnow) then |
8180 | per_cu->s.type_unit_group may not have been set up yet. */ | |
796a7ff8 DE |
8181 | if (per_cu->type_unit_group == NULL) |
8182 | per_cu->type_unit_group = get_type_unit_group (cu, attr); | |
8183 | tu_group = per_cu->type_unit_group; | |
f4dc4d17 DE |
8184 | |
8185 | /* If we've already processed this stmt_list there's no real need to | |
8186 | do it again, we could fake it and just recreate the part we need | |
8187 | (file name,index -> symtab mapping). If data shows this optimization | |
8188 | is useful we can do it then. */ | |
8189 | first_time = tu_group->primary_symtab == NULL; | |
8190 | ||
8191 | /* We have to handle the case of both a missing DW_AT_stmt_list or bad | |
8192 | debug info. */ | |
8193 | lh = NULL; | |
8194 | if (attr != NULL) | |
3019eac3 | 8195 | { |
f4dc4d17 DE |
8196 | line_offset = DW_UNSND (attr); |
8197 | lh = dwarf_decode_line_header (line_offset, cu); | |
8198 | } | |
8199 | if (lh == NULL) | |
8200 | { | |
8201 | if (first_time) | |
8202 | dwarf2_start_symtab (cu, "", NULL, 0); | |
8203 | else | |
8204 | { | |
8205 | gdb_assert (tu_group->symtabs == NULL); | |
8206 | restart_symtab (0); | |
8207 | } | |
8208 | /* Note: The primary symtab will get allocated at the end. */ | |
8209 | return; | |
3019eac3 DE |
8210 | } |
8211 | ||
f4dc4d17 DE |
8212 | cu->line_header = lh; |
8213 | make_cleanup (free_cu_line_header, cu); | |
3019eac3 | 8214 | |
f4dc4d17 DE |
8215 | if (first_time) |
8216 | { | |
8217 | dwarf2_start_symtab (cu, "", NULL, 0); | |
3019eac3 | 8218 | |
f4dc4d17 DE |
8219 | tu_group->num_symtabs = lh->num_file_names; |
8220 | tu_group->symtabs = XNEWVEC (struct symtab *, lh->num_file_names); | |
3019eac3 | 8221 | |
f4dc4d17 DE |
8222 | for (i = 0; i < lh->num_file_names; ++i) |
8223 | { | |
8224 | char *dir = NULL; | |
8225 | struct file_entry *fe = &lh->file_names[i]; | |
3019eac3 | 8226 | |
f4dc4d17 DE |
8227 | if (fe->dir_index) |
8228 | dir = lh->include_dirs[fe->dir_index - 1]; | |
8229 | dwarf2_start_subfile (fe->name, dir, NULL); | |
3019eac3 | 8230 | |
f4dc4d17 DE |
8231 | /* Note: We don't have to watch for the main subfile here, type units |
8232 | don't have DW_AT_name. */ | |
3019eac3 | 8233 | |
f4dc4d17 DE |
8234 | if (current_subfile->symtab == NULL) |
8235 | { | |
8236 | /* NOTE: start_subfile will recognize when it's been passed | |
8237 | a file it has already seen. So we can't assume there's a | |
8238 | simple mapping from lh->file_names to subfiles, | |
8239 | lh->file_names may contain dups. */ | |
8240 | current_subfile->symtab = allocate_symtab (current_subfile->name, | |
8241 | objfile); | |
8242 | } | |
8243 | ||
8244 | fe->symtab = current_subfile->symtab; | |
8245 | tu_group->symtabs[i] = fe->symtab; | |
8246 | } | |
8247 | } | |
8248 | else | |
3019eac3 | 8249 | { |
f4dc4d17 DE |
8250 | restart_symtab (0); |
8251 | ||
8252 | for (i = 0; i < lh->num_file_names; ++i) | |
8253 | { | |
8254 | struct file_entry *fe = &lh->file_names[i]; | |
8255 | ||
8256 | fe->symtab = tu_group->symtabs[i]; | |
8257 | } | |
3019eac3 DE |
8258 | } |
8259 | ||
f4dc4d17 DE |
8260 | /* The main symtab is allocated last. Type units don't have DW_AT_name |
8261 | so they don't have a "real" (so to speak) symtab anyway. | |
8262 | There is later code that will assign the main symtab to all symbols | |
8263 | that don't have one. We need to handle the case of a symbol with a | |
8264 | missing symtab (DW_AT_decl_file) anyway. */ | |
8265 | } | |
3019eac3 | 8266 | |
f4dc4d17 DE |
8267 | /* Process DW_TAG_type_unit. |
8268 | For TUs we want to skip the first top level sibling if it's not the | |
8269 | actual type being defined by this TU. In this case the first top | |
8270 | level sibling is there to provide context only. */ | |
3019eac3 | 8271 | |
f4dc4d17 DE |
8272 | static void |
8273 | read_type_unit_scope (struct die_info *die, struct dwarf2_cu *cu) | |
8274 | { | |
8275 | struct die_info *child_die; | |
3019eac3 | 8276 | |
f4dc4d17 DE |
8277 | prepare_one_comp_unit (cu, die, language_minimal); |
8278 | ||
8279 | /* Initialize (or reinitialize) the machinery for building symtabs. | |
8280 | We do this before processing child DIEs, so that the line header table | |
8281 | is available for DW_AT_decl_file. */ | |
8282 | setup_type_unit_groups (die, cu); | |
8283 | ||
8284 | if (die->child != NULL) | |
8285 | { | |
8286 | child_die = die->child; | |
8287 | while (child_die && child_die->tag) | |
8288 | { | |
8289 | process_die (child_die, cu); | |
8290 | child_die = sibling_die (child_die); | |
8291 | } | |
8292 | } | |
3019eac3 DE |
8293 | } |
8294 | \f | |
80626a55 DE |
8295 | /* DWO/DWP files. |
8296 | ||
8297 | http://gcc.gnu.org/wiki/DebugFission | |
8298 | http://gcc.gnu.org/wiki/DebugFissionDWP | |
8299 | ||
8300 | To simplify handling of both DWO files ("object" files with the DWARF info) | |
8301 | and DWP files (a file with the DWOs packaged up into one file), we treat | |
8302 | DWP files as having a collection of virtual DWO files. */ | |
3019eac3 DE |
8303 | |
8304 | static hashval_t | |
8305 | hash_dwo_file (const void *item) | |
8306 | { | |
8307 | const struct dwo_file *dwo_file = item; | |
8308 | ||
80626a55 | 8309 | return htab_hash_string (dwo_file->name); |
3019eac3 DE |
8310 | } |
8311 | ||
8312 | static int | |
8313 | eq_dwo_file (const void *item_lhs, const void *item_rhs) | |
8314 | { | |
8315 | const struct dwo_file *lhs = item_lhs; | |
8316 | const struct dwo_file *rhs = item_rhs; | |
8317 | ||
80626a55 | 8318 | return strcmp (lhs->name, rhs->name) == 0; |
3019eac3 DE |
8319 | } |
8320 | ||
8321 | /* Allocate a hash table for DWO files. */ | |
8322 | ||
8323 | static htab_t | |
8324 | allocate_dwo_file_hash_table (void) | |
8325 | { | |
8326 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
8327 | ||
8328 | return htab_create_alloc_ex (41, | |
8329 | hash_dwo_file, | |
8330 | eq_dwo_file, | |
8331 | NULL, | |
8332 | &objfile->objfile_obstack, | |
8333 | hashtab_obstack_allocate, | |
8334 | dummy_obstack_deallocate); | |
8335 | } | |
8336 | ||
80626a55 DE |
8337 | /* Lookup DWO file DWO_NAME. */ |
8338 | ||
8339 | static void ** | |
8340 | lookup_dwo_file_slot (const char *dwo_name) | |
8341 | { | |
8342 | struct dwo_file find_entry; | |
8343 | void **slot; | |
8344 | ||
8345 | if (dwarf2_per_objfile->dwo_files == NULL) | |
8346 | dwarf2_per_objfile->dwo_files = allocate_dwo_file_hash_table (); | |
8347 | ||
8348 | memset (&find_entry, 0, sizeof (find_entry)); | |
8349 | find_entry.name = dwo_name; | |
8350 | slot = htab_find_slot (dwarf2_per_objfile->dwo_files, &find_entry, INSERT); | |
8351 | ||
8352 | return slot; | |
8353 | } | |
8354 | ||
3019eac3 DE |
8355 | static hashval_t |
8356 | hash_dwo_unit (const void *item) | |
8357 | { | |
8358 | const struct dwo_unit *dwo_unit = item; | |
8359 | ||
8360 | /* This drops the top 32 bits of the id, but is ok for a hash. */ | |
8361 | return dwo_unit->signature; | |
8362 | } | |
8363 | ||
8364 | static int | |
8365 | eq_dwo_unit (const void *item_lhs, const void *item_rhs) | |
8366 | { | |
8367 | const struct dwo_unit *lhs = item_lhs; | |
8368 | const struct dwo_unit *rhs = item_rhs; | |
8369 | ||
8370 | /* The signature is assumed to be unique within the DWO file. | |
8371 | So while object file CU dwo_id's always have the value zero, | |
8372 | that's OK, assuming each object file DWO file has only one CU, | |
8373 | and that's the rule for now. */ | |
8374 | return lhs->signature == rhs->signature; | |
8375 | } | |
8376 | ||
8377 | /* Allocate a hash table for DWO CUs,TUs. | |
8378 | There is one of these tables for each of CUs,TUs for each DWO file. */ | |
8379 | ||
8380 | static htab_t | |
8381 | allocate_dwo_unit_table (struct objfile *objfile) | |
8382 | { | |
8383 | /* Start out with a pretty small number. | |
8384 | Generally DWO files contain only one CU and maybe some TUs. */ | |
8385 | return htab_create_alloc_ex (3, | |
8386 | hash_dwo_unit, | |
8387 | eq_dwo_unit, | |
8388 | NULL, | |
8389 | &objfile->objfile_obstack, | |
8390 | hashtab_obstack_allocate, | |
8391 | dummy_obstack_deallocate); | |
8392 | } | |
8393 | ||
80626a55 | 8394 | /* Structure used to pass data to create_dwo_debug_info_hash_table_reader. */ |
3019eac3 DE |
8395 | |
8396 | struct create_dwo_info_table_data | |
8397 | { | |
8398 | struct dwo_file *dwo_file; | |
8399 | htab_t cu_htab; | |
8400 | }; | |
8401 | ||
80626a55 | 8402 | /* die_reader_func for create_dwo_debug_info_hash_table. */ |
3019eac3 DE |
8403 | |
8404 | static void | |
80626a55 DE |
8405 | create_dwo_debug_info_hash_table_reader (const struct die_reader_specs *reader, |
8406 | gdb_byte *info_ptr, | |
8407 | struct die_info *comp_unit_die, | |
8408 | int has_children, | |
8409 | void *datap) | |
3019eac3 DE |
8410 | { |
8411 | struct dwarf2_cu *cu = reader->cu; | |
8412 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
8413 | sect_offset offset = cu->per_cu->offset; | |
8a0459fd | 8414 | struct dwarf2_section_info *section = cu->per_cu->section; |
3019eac3 DE |
8415 | struct create_dwo_info_table_data *data = datap; |
8416 | struct dwo_file *dwo_file = data->dwo_file; | |
8417 | htab_t cu_htab = data->cu_htab; | |
8418 | void **slot; | |
8419 | struct attribute *attr; | |
8420 | struct dwo_unit *dwo_unit; | |
8421 | ||
8422 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_id, cu); | |
8423 | if (attr == NULL) | |
8424 | { | |
8425 | error (_("Dwarf Error: debug entry at offset 0x%x is missing" | |
8426 | " its dwo_id [in module %s]"), | |
80626a55 | 8427 | offset.sect_off, dwo_file->name); |
3019eac3 DE |
8428 | return; |
8429 | } | |
8430 | ||
8431 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); | |
8432 | dwo_unit->dwo_file = dwo_file; | |
8433 | dwo_unit->signature = DW_UNSND (attr); | |
8a0459fd | 8434 | dwo_unit->section = section; |
3019eac3 DE |
8435 | dwo_unit->offset = offset; |
8436 | dwo_unit->length = cu->per_cu->length; | |
8437 | ||
8438 | slot = htab_find_slot (cu_htab, dwo_unit, INSERT); | |
8439 | gdb_assert (slot != NULL); | |
8440 | if (*slot != NULL) | |
8441 | { | |
8442 | const struct dwo_unit *dup_dwo_unit = *slot; | |
8443 | ||
8444 | complaint (&symfile_complaints, | |
8445 | _("debug entry at offset 0x%x is duplicate to the entry at" | |
8446 | " offset 0x%x, dwo_id 0x%s [in module %s]"), | |
8447 | offset.sect_off, dup_dwo_unit->offset.sect_off, | |
8448 | phex (dwo_unit->signature, sizeof (dwo_unit->signature)), | |
80626a55 | 8449 | dwo_file->name); |
3019eac3 DE |
8450 | } |
8451 | else | |
8452 | *slot = dwo_unit; | |
8453 | ||
09406207 | 8454 | if (dwarf2_read_debug) |
3019eac3 DE |
8455 | fprintf_unfiltered (gdb_stdlog, " offset 0x%x, dwo_id 0x%s\n", |
8456 | offset.sect_off, | |
8457 | phex (dwo_unit->signature, | |
8458 | sizeof (dwo_unit->signature))); | |
8459 | } | |
8460 | ||
80626a55 DE |
8461 | /* Create a hash table to map DWO IDs to their CU entry in |
8462 | .debug_info.dwo in DWO_FILE. | |
c88ee1f0 DE |
8463 | Note: This function processes DWO files only, not DWP files. |
8464 | Note: A DWO file generally contains one CU, but we don't assume this. */ | |
3019eac3 DE |
8465 | |
8466 | static htab_t | |
80626a55 | 8467 | create_dwo_debug_info_hash_table (struct dwo_file *dwo_file) |
3019eac3 DE |
8468 | { |
8469 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
8470 | struct dwarf2_section_info *section = &dwo_file->sections.info; | |
8471 | bfd *abfd; | |
8472 | htab_t cu_htab; | |
8473 | gdb_byte *info_ptr, *end_ptr; | |
8474 | struct create_dwo_info_table_data create_dwo_info_table_data; | |
8475 | ||
8476 | dwarf2_read_section (objfile, section); | |
8477 | info_ptr = section->buffer; | |
8478 | ||
8479 | if (info_ptr == NULL) | |
8480 | return NULL; | |
8481 | ||
8482 | /* We can't set abfd until now because the section may be empty or | |
8483 | not present, in which case section->asection will be NULL. */ | |
8484 | abfd = section->asection->owner; | |
8485 | ||
09406207 | 8486 | if (dwarf2_read_debug) |
3019eac3 DE |
8487 | fprintf_unfiltered (gdb_stdlog, "Reading .debug_info.dwo for %s:\n", |
8488 | bfd_get_filename (abfd)); | |
8489 | ||
8490 | cu_htab = allocate_dwo_unit_table (objfile); | |
8491 | ||
8492 | create_dwo_info_table_data.dwo_file = dwo_file; | |
8493 | create_dwo_info_table_data.cu_htab = cu_htab; | |
8494 | ||
8495 | end_ptr = info_ptr + section->size; | |
8496 | while (info_ptr < end_ptr) | |
8497 | { | |
8498 | struct dwarf2_per_cu_data per_cu; | |
8499 | ||
8500 | memset (&per_cu, 0, sizeof (per_cu)); | |
8501 | per_cu.objfile = objfile; | |
8502 | per_cu.is_debug_types = 0; | |
8503 | per_cu.offset.sect_off = info_ptr - section->buffer; | |
8a0459fd | 8504 | per_cu.section = section; |
3019eac3 DE |
8505 | |
8506 | init_cutu_and_read_dies_no_follow (&per_cu, | |
8507 | &dwo_file->sections.abbrev, | |
8508 | dwo_file, | |
80626a55 | 8509 | create_dwo_debug_info_hash_table_reader, |
3019eac3 DE |
8510 | &create_dwo_info_table_data); |
8511 | ||
8512 | info_ptr += per_cu.length; | |
8513 | } | |
8514 | ||
8515 | return cu_htab; | |
8516 | } | |
8517 | ||
80626a55 DE |
8518 | /* DWP file .debug_{cu,tu}_index section format: |
8519 | [ref: http://gcc.gnu.org/wiki/DebugFissionDWP] | |
8520 | ||
8521 | Both index sections have the same format, and serve to map a 64-bit | |
8522 | signature to a set of section numbers. Each section begins with a header, | |
8523 | followed by a hash table of 64-bit signatures, a parallel table of 32-bit | |
8524 | indexes, and a pool of 32-bit section numbers. The index sections will be | |
8525 | aligned at 8-byte boundaries in the file. | |
8526 | ||
8527 | The index section header contains two unsigned 32-bit values (using the | |
8528 | byte order of the application binary): | |
8529 | ||
8530 | N, the number of compilation units or type units in the index | |
8531 | M, the number of slots in the hash table | |
8532 | ||
8533 | (We assume that N and M will not exceed 2^32 - 1.) | |
8534 | ||
8535 | The size of the hash table, M, must be 2^k such that 2^k > 3*N/2. | |
8536 | ||
8537 | The hash table begins at offset 8 in the section, and consists of an array | |
8538 | of M 64-bit slots. Each slot contains a 64-bit signature (using the byte | |
8539 | order of the application binary). Unused slots in the hash table are 0. | |
8540 | (We rely on the extreme unlikeliness of a signature being exactly 0.) | |
8541 | ||
8542 | The parallel table begins immediately after the hash table | |
8543 | (at offset 8 + 8 * M from the beginning of the section), and consists of an | |
8544 | array of 32-bit indexes (using the byte order of the application binary), | |
8545 | corresponding 1-1 with slots in the hash table. Each entry in the parallel | |
8546 | table contains a 32-bit index into the pool of section numbers. For unused | |
8547 | hash table slots, the corresponding entry in the parallel table will be 0. | |
8548 | ||
8549 | Given a 64-bit compilation unit signature or a type signature S, an entry | |
8550 | in the hash table is located as follows: | |
8551 | ||
8552 | 1) Calculate a primary hash H = S & MASK(k), where MASK(k) is a mask with | |
8553 | the low-order k bits all set to 1. | |
8554 | ||
8555 | 2) Calculate a secondary hash H' = (((S >> 32) & MASK(k)) | 1). | |
8556 | ||
8557 | 3) If the hash table entry at index H matches the signature, use that | |
8558 | entry. If the hash table entry at index H is unused (all zeroes), | |
8559 | terminate the search: the signature is not present in the table. | |
8560 | ||
8561 | 4) Let H = (H + H') modulo M. Repeat at Step 3. | |
8562 | ||
8563 | Because M > N and H' and M are relatively prime, the search is guaranteed | |
8564 | to stop at an unused slot or find the match. | |
8565 | ||
8566 | The pool of section numbers begins immediately following the hash table | |
8567 | (at offset 8 + 12 * M from the beginning of the section). The pool of | |
8568 | section numbers consists of an array of 32-bit words (using the byte order | |
8569 | of the application binary). Each item in the array is indexed starting | |
8570 | from 0. The hash table entry provides the index of the first section | |
8571 | number in the set. Additional section numbers in the set follow, and the | |
8572 | set is terminated by a 0 entry (section number 0 is not used in ELF). | |
8573 | ||
8574 | In each set of section numbers, the .debug_info.dwo or .debug_types.dwo | |
8575 | section must be the first entry in the set, and the .debug_abbrev.dwo must | |
8576 | be the second entry. Other members of the set may follow in any order. */ | |
8577 | ||
8578 | /* Create a hash table to map DWO IDs to their CU/TU entry in | |
8579 | .debug_{info,types}.dwo in DWP_FILE. | |
8580 | Returns NULL if there isn't one. | |
8581 | Note: This function processes DWP files only, not DWO files. */ | |
8582 | ||
8583 | static struct dwp_hash_table * | |
8584 | create_dwp_hash_table (struct dwp_file *dwp_file, int is_debug_types) | |
8585 | { | |
8586 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
8587 | bfd *dbfd = dwp_file->dbfd; | |
8588 | char *index_ptr, *index_end; | |
8589 | struct dwarf2_section_info *index; | |
8590 | uint32_t version, nr_units, nr_slots; | |
8591 | struct dwp_hash_table *htab; | |
8592 | ||
8593 | if (is_debug_types) | |
8594 | index = &dwp_file->sections.tu_index; | |
8595 | else | |
8596 | index = &dwp_file->sections.cu_index; | |
8597 | ||
8598 | if (dwarf2_section_empty_p (index)) | |
8599 | return NULL; | |
8600 | dwarf2_read_section (objfile, index); | |
8601 | ||
8602 | index_ptr = index->buffer; | |
8603 | index_end = index_ptr + index->size; | |
8604 | ||
8605 | version = read_4_bytes (dbfd, index_ptr); | |
8606 | index_ptr += 8; /* Skip the unused word. */ | |
8607 | nr_units = read_4_bytes (dbfd, index_ptr); | |
8608 | index_ptr += 4; | |
8609 | nr_slots = read_4_bytes (dbfd, index_ptr); | |
8610 | index_ptr += 4; | |
8611 | ||
8612 | if (version != 1) | |
8613 | { | |
8614 | error (_("Dwarf Error: unsupported DWP file version (%u)" | |
8615 | " [in module %s]"), | |
8616 | version, dwp_file->name); | |
8617 | } | |
8618 | if (nr_slots != (nr_slots & -nr_slots)) | |
8619 | { | |
8620 | error (_("Dwarf Error: number of slots in DWP hash table (%u)" | |
8621 | " is not power of 2 [in module %s]"), | |
8622 | nr_slots, dwp_file->name); | |
8623 | } | |
8624 | ||
8625 | htab = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwp_hash_table); | |
8626 | htab->nr_units = nr_units; | |
8627 | htab->nr_slots = nr_slots; | |
8628 | htab->hash_table = index_ptr; | |
8629 | htab->unit_table = htab->hash_table + sizeof (uint64_t) * nr_slots; | |
8630 | htab->section_pool = htab->unit_table + sizeof (uint32_t) * nr_slots; | |
8631 | ||
8632 | return htab; | |
8633 | } | |
8634 | ||
8635 | /* Update SECTIONS with the data from SECTP. | |
8636 | ||
8637 | This function is like the other "locate" section routines that are | |
8638 | passed to bfd_map_over_sections, but in this context the sections to | |
8639 | read comes from the DWP hash table, not the full ELF section table. | |
8640 | ||
8641 | The result is non-zero for success, or zero if an error was found. */ | |
8642 | ||
8643 | static int | |
8644 | locate_virtual_dwo_sections (asection *sectp, | |
8645 | struct virtual_dwo_sections *sections) | |
8646 | { | |
8647 | const struct dwop_section_names *names = &dwop_section_names; | |
8648 | ||
8649 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
8650 | { | |
8651 | /* There can be only one. */ | |
8652 | if (sections->abbrev.asection != NULL) | |
8653 | return 0; | |
8654 | sections->abbrev.asection = sectp; | |
8655 | sections->abbrev.size = bfd_get_section_size (sectp); | |
8656 | } | |
8657 | else if (section_is_p (sectp->name, &names->info_dwo) | |
8658 | || section_is_p (sectp->name, &names->types_dwo)) | |
8659 | { | |
8660 | /* There can be only one. */ | |
8661 | if (sections->info_or_types.asection != NULL) | |
8662 | return 0; | |
8663 | sections->info_or_types.asection = sectp; | |
8664 | sections->info_or_types.size = bfd_get_section_size (sectp); | |
8665 | } | |
8666 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
8667 | { | |
8668 | /* There can be only one. */ | |
8669 | if (sections->line.asection != NULL) | |
8670 | return 0; | |
8671 | sections->line.asection = sectp; | |
8672 | sections->line.size = bfd_get_section_size (sectp); | |
8673 | } | |
8674 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
8675 | { | |
8676 | /* There can be only one. */ | |
8677 | if (sections->loc.asection != NULL) | |
8678 | return 0; | |
8679 | sections->loc.asection = sectp; | |
8680 | sections->loc.size = bfd_get_section_size (sectp); | |
8681 | } | |
8682 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
8683 | { | |
8684 | /* There can be only one. */ | |
8685 | if (sections->macinfo.asection != NULL) | |
8686 | return 0; | |
8687 | sections->macinfo.asection = sectp; | |
8688 | sections->macinfo.size = bfd_get_section_size (sectp); | |
8689 | } | |
8690 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
8691 | { | |
8692 | /* There can be only one. */ | |
8693 | if (sections->macro.asection != NULL) | |
8694 | return 0; | |
8695 | sections->macro.asection = sectp; | |
8696 | sections->macro.size = bfd_get_section_size (sectp); | |
8697 | } | |
8698 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
8699 | { | |
8700 | /* There can be only one. */ | |
8701 | if (sections->str_offsets.asection != NULL) | |
8702 | return 0; | |
8703 | sections->str_offsets.asection = sectp; | |
8704 | sections->str_offsets.size = bfd_get_section_size (sectp); | |
8705 | } | |
8706 | else | |
8707 | { | |
8708 | /* No other kind of section is valid. */ | |
8709 | return 0; | |
8710 | } | |
8711 | ||
8712 | return 1; | |
8713 | } | |
8714 | ||
8715 | /* Create a dwo_unit object for the DWO with signature SIGNATURE. | |
8716 | HTAB is the hash table from the DWP file. | |
8717 | SECTION_INDEX is the index of the DWO in HTAB. */ | |
8718 | ||
8719 | static struct dwo_unit * | |
8720 | create_dwo_in_dwp (struct dwp_file *dwp_file, | |
8721 | const struct dwp_hash_table *htab, | |
8722 | uint32_t section_index, | |
8723 | ULONGEST signature, int is_debug_types) | |
8724 | { | |
8725 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
8726 | bfd *dbfd = dwp_file->dbfd; | |
8727 | const char *kind = is_debug_types ? "TU" : "CU"; | |
8728 | struct dwo_file *dwo_file; | |
8729 | struct dwo_unit *dwo_unit; | |
8730 | struct virtual_dwo_sections sections; | |
8731 | void **dwo_file_slot; | |
8732 | char *virtual_dwo_name; | |
8733 | struct dwarf2_section_info *cutu; | |
8734 | struct cleanup *cleanups; | |
8735 | int i; | |
8736 | ||
8737 | if (dwarf2_read_debug) | |
8738 | { | |
8739 | fprintf_unfiltered (gdb_stdlog, "Reading %s %u/0x%s in DWP file: %s\n", | |
8740 | kind, | |
8741 | section_index, phex (signature, sizeof (signature)), | |
8742 | dwp_file->name); | |
8743 | } | |
8744 | ||
8745 | /* Fetch the sections of this DWO. | |
8746 | Put a limit on the number of sections we look for so that bad data | |
8747 | doesn't cause us to loop forever. */ | |
8748 | ||
8749 | #define MAX_NR_DWO_SECTIONS \ | |
8750 | (1 /* .debug_info or .debug_types */ \ | |
8751 | + 1 /* .debug_abbrev */ \ | |
8752 | + 1 /* .debug_line */ \ | |
8753 | + 1 /* .debug_loc */ \ | |
8754 | + 1 /* .debug_str_offsets */ \ | |
8755 | + 1 /* .debug_macro */ \ | |
8756 | + 1 /* .debug_macinfo */ \ | |
8757 | + 1 /* trailing zero */) | |
8758 | ||
8759 | memset (§ions, 0, sizeof (sections)); | |
8760 | cleanups = make_cleanup (null_cleanup, 0); | |
8761 | ||
8762 | for (i = 0; i < MAX_NR_DWO_SECTIONS; ++i) | |
8763 | { | |
8764 | asection *sectp; | |
8765 | uint32_t section_nr = | |
8766 | read_4_bytes (dbfd, | |
8767 | htab->section_pool | |
8768 | + (section_index + i) * sizeof (uint32_t)); | |
8769 | ||
8770 | if (section_nr == 0) | |
8771 | break; | |
8772 | if (section_nr >= dwp_file->num_sections) | |
8773 | { | |
8774 | error (_("Dwarf Error: bad DWP hash table, section number too large" | |
8775 | " [in module %s]"), | |
8776 | dwp_file->name); | |
8777 | } | |
8778 | ||
8779 | sectp = dwp_file->elf_sections[section_nr]; | |
8780 | if (! locate_virtual_dwo_sections (sectp, §ions)) | |
8781 | { | |
8782 | error (_("Dwarf Error: bad DWP hash table, invalid section found" | |
8783 | " [in module %s]"), | |
8784 | dwp_file->name); | |
8785 | } | |
8786 | } | |
8787 | ||
8788 | if (i < 2 | |
8789 | || sections.info_or_types.asection == NULL | |
8790 | || sections.abbrev.asection == NULL) | |
8791 | { | |
8792 | error (_("Dwarf Error: bad DWP hash table, missing DWO sections" | |
8793 | " [in module %s]"), | |
8794 | dwp_file->name); | |
8795 | } | |
8796 | if (i == MAX_NR_DWO_SECTIONS) | |
8797 | { | |
8798 | error (_("Dwarf Error: bad DWP hash table, too many DWO sections" | |
8799 | " [in module %s]"), | |
8800 | dwp_file->name); | |
8801 | } | |
8802 | ||
8803 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
8804 | have dwo_unit "live" in that. At least for now. | |
8805 | ||
8806 | The DWP file can be made up of a random collection of CUs and TUs. | |
c766f7ec DE |
8807 | However, for each CU + set of TUs that came from the same original DWO |
8808 | file, we want to combine them back into a virtual DWO file to save space | |
80626a55 DE |
8809 | (fewer struct dwo_file objects to allocated). Remember that for really |
8810 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ | |
8811 | ||
2792b94d PM |
8812 | virtual_dwo_name = |
8813 | xstrprintf ("virtual-dwo/%d-%d-%d-%d", | |
8814 | sections.abbrev.asection ? sections.abbrev.asection->id : 0, | |
8815 | sections.line.asection ? sections.line.asection->id : 0, | |
8816 | sections.loc.asection ? sections.loc.asection->id : 0, | |
8817 | (sections.str_offsets.asection | |
8818 | ? sections.str_offsets.asection->id | |
8819 | : 0)); | |
80626a55 DE |
8820 | make_cleanup (xfree, virtual_dwo_name); |
8821 | /* Can we use an existing virtual DWO file? */ | |
8822 | dwo_file_slot = lookup_dwo_file_slot (virtual_dwo_name); | |
8823 | /* Create one if necessary. */ | |
8824 | if (*dwo_file_slot == NULL) | |
8825 | { | |
8826 | if (dwarf2_read_debug) | |
8827 | { | |
8828 | fprintf_unfiltered (gdb_stdlog, "Creating virtual DWO: %s\n", | |
8829 | virtual_dwo_name); | |
8830 | } | |
8831 | dwo_file = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_file); | |
8832 | dwo_file->name = obstack_copy0 (&objfile->objfile_obstack, | |
8833 | virtual_dwo_name, | |
8834 | strlen (virtual_dwo_name)); | |
8835 | dwo_file->sections.abbrev = sections.abbrev; | |
8836 | dwo_file->sections.line = sections.line; | |
8837 | dwo_file->sections.loc = sections.loc; | |
8838 | dwo_file->sections.macinfo = sections.macinfo; | |
8839 | dwo_file->sections.macro = sections.macro; | |
8840 | dwo_file->sections.str_offsets = sections.str_offsets; | |
8841 | /* The "str" section is global to the entire DWP file. */ | |
8842 | dwo_file->sections.str = dwp_file->sections.str; | |
8843 | /* The info or types section is assigned later to dwo_unit, | |
8844 | there's no need to record it in dwo_file. | |
8845 | Also, we can't simply record type sections in dwo_file because | |
8846 | we record a pointer into the vector in dwo_unit. As we collect more | |
8847 | types we'll grow the vector and eventually have to reallocate space | |
8848 | for it, invalidating all the pointers into the current copy. */ | |
8849 | *dwo_file_slot = dwo_file; | |
8850 | } | |
8851 | else | |
8852 | { | |
8853 | if (dwarf2_read_debug) | |
8854 | { | |
8855 | fprintf_unfiltered (gdb_stdlog, "Using existing virtual DWO: %s\n", | |
8856 | virtual_dwo_name); | |
8857 | } | |
8858 | dwo_file = *dwo_file_slot; | |
8859 | } | |
8860 | do_cleanups (cleanups); | |
8861 | ||
8862 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); | |
8863 | dwo_unit->dwo_file = dwo_file; | |
8864 | dwo_unit->signature = signature; | |
8a0459fd DE |
8865 | dwo_unit->section = obstack_alloc (&objfile->objfile_obstack, |
8866 | sizeof (struct dwarf2_section_info)); | |
8867 | *dwo_unit->section = sections.info_or_types; | |
80626a55 DE |
8868 | /* offset, length, type_offset_in_tu are set later. */ |
8869 | ||
8870 | return dwo_unit; | |
8871 | } | |
8872 | ||
8873 | /* Lookup the DWO with SIGNATURE in DWP_FILE. */ | |
8874 | ||
8875 | static struct dwo_unit * | |
8876 | lookup_dwo_in_dwp (struct dwp_file *dwp_file, | |
8877 | const struct dwp_hash_table *htab, | |
8878 | ULONGEST signature, int is_debug_types) | |
8879 | { | |
8880 | bfd *dbfd = dwp_file->dbfd; | |
8881 | uint32_t mask = htab->nr_slots - 1; | |
8882 | uint32_t hash = signature & mask; | |
8883 | uint32_t hash2 = ((signature >> 32) & mask) | 1; | |
8884 | unsigned int i; | |
8885 | void **slot; | |
8886 | struct dwo_unit find_dwo_cu, *dwo_cu; | |
8887 | ||
8888 | memset (&find_dwo_cu, 0, sizeof (find_dwo_cu)); | |
8889 | find_dwo_cu.signature = signature; | |
8890 | slot = htab_find_slot (dwp_file->loaded_cutus, &find_dwo_cu, INSERT); | |
8891 | ||
8892 | if (*slot != NULL) | |
8893 | return *slot; | |
8894 | ||
8895 | /* Use a for loop so that we don't loop forever on bad debug info. */ | |
8896 | for (i = 0; i < htab->nr_slots; ++i) | |
8897 | { | |
8898 | ULONGEST signature_in_table; | |
8899 | ||
8900 | signature_in_table = | |
8901 | read_8_bytes (dbfd, htab->hash_table + hash * sizeof (uint64_t)); | |
8902 | if (signature_in_table == signature) | |
8903 | { | |
8904 | uint32_t section_index = | |
8905 | read_4_bytes (dbfd, htab->unit_table + hash * sizeof (uint32_t)); | |
8906 | ||
8907 | *slot = create_dwo_in_dwp (dwp_file, htab, section_index, | |
8908 | signature, is_debug_types); | |
8909 | return *slot; | |
8910 | } | |
8911 | if (signature_in_table == 0) | |
8912 | return NULL; | |
8913 | hash = (hash + hash2) & mask; | |
8914 | } | |
8915 | ||
8916 | error (_("Dwarf Error: bad DWP hash table, lookup didn't terminate" | |
8917 | " [in module %s]"), | |
8918 | dwp_file->name); | |
8919 | } | |
8920 | ||
8921 | /* Subroutine of open_dwop_file to simplify it. | |
3019eac3 DE |
8922 | Open the file specified by FILE_NAME and hand it off to BFD for |
8923 | preliminary analysis. Return a newly initialized bfd *, which | |
8924 | includes a canonicalized copy of FILE_NAME. | |
80626a55 | 8925 | If IS_DWP is TRUE, we're opening a DWP file, otherwise a DWO file. |
3019eac3 DE |
8926 | In case of trouble, return NULL. |
8927 | NOTE: This function is derived from symfile_bfd_open. */ | |
8928 | ||
8929 | static bfd * | |
80626a55 | 8930 | try_open_dwop_file (const char *file_name, int is_dwp) |
3019eac3 DE |
8931 | { |
8932 | bfd *sym_bfd; | |
80626a55 | 8933 | int desc, flags; |
3019eac3 | 8934 | char *absolute_name; |
3019eac3 | 8935 | |
80626a55 DE |
8936 | flags = OPF_TRY_CWD_FIRST; |
8937 | if (is_dwp) | |
8938 | flags |= OPF_SEARCH_IN_PATH; | |
8939 | desc = openp (debug_file_directory, flags, file_name, | |
3019eac3 DE |
8940 | O_RDONLY | O_BINARY, &absolute_name); |
8941 | if (desc < 0) | |
8942 | return NULL; | |
8943 | ||
bb397797 | 8944 | sym_bfd = gdb_bfd_open (absolute_name, gnutarget, desc); |
3019eac3 DE |
8945 | if (!sym_bfd) |
8946 | { | |
3019eac3 DE |
8947 | xfree (absolute_name); |
8948 | return NULL; | |
8949 | } | |
a4453b7e | 8950 | xfree (absolute_name); |
3019eac3 DE |
8951 | bfd_set_cacheable (sym_bfd, 1); |
8952 | ||
8953 | if (!bfd_check_format (sym_bfd, bfd_object)) | |
8954 | { | |
cbb099e8 | 8955 | gdb_bfd_unref (sym_bfd); /* This also closes desc. */ |
3019eac3 DE |
8956 | return NULL; |
8957 | } | |
8958 | ||
3019eac3 DE |
8959 | return sym_bfd; |
8960 | } | |
8961 | ||
80626a55 | 8962 | /* Try to open DWO/DWP file FILE_NAME. |
3019eac3 | 8963 | COMP_DIR is the DW_AT_comp_dir attribute. |
80626a55 | 8964 | If IS_DWP is TRUE, we're opening a DWP file, otherwise a DWO file. |
3019eac3 DE |
8965 | The result is the bfd handle of the file. |
8966 | If there is a problem finding or opening the file, return NULL. | |
8967 | Upon success, the canonicalized path of the file is stored in the bfd, | |
8968 | same as symfile_bfd_open. */ | |
8969 | ||
8970 | static bfd * | |
80626a55 | 8971 | open_dwop_file (const char *file_name, const char *comp_dir, int is_dwp) |
3019eac3 DE |
8972 | { |
8973 | bfd *abfd; | |
3019eac3 | 8974 | |
80626a55 DE |
8975 | if (IS_ABSOLUTE_PATH (file_name)) |
8976 | return try_open_dwop_file (file_name, is_dwp); | |
3019eac3 DE |
8977 | |
8978 | /* Before trying the search path, try DWO_NAME in COMP_DIR. */ | |
8979 | ||
8980 | if (comp_dir != NULL) | |
8981 | { | |
80626a55 | 8982 | char *path_to_try = concat (comp_dir, SLASH_STRING, file_name, NULL); |
3019eac3 DE |
8983 | |
8984 | /* NOTE: If comp_dir is a relative path, this will also try the | |
8985 | search path, which seems useful. */ | |
80626a55 | 8986 | abfd = try_open_dwop_file (path_to_try, is_dwp); |
3019eac3 DE |
8987 | xfree (path_to_try); |
8988 | if (abfd != NULL) | |
8989 | return abfd; | |
8990 | } | |
8991 | ||
8992 | /* That didn't work, try debug-file-directory, which, despite its name, | |
8993 | is a list of paths. */ | |
8994 | ||
8995 | if (*debug_file_directory == '\0') | |
8996 | return NULL; | |
8997 | ||
80626a55 | 8998 | return try_open_dwop_file (file_name, is_dwp); |
3019eac3 DE |
8999 | } |
9000 | ||
80626a55 DE |
9001 | /* This function is mapped across the sections and remembers the offset and |
9002 | size of each of the DWO debugging sections we are interested in. */ | |
9003 | ||
9004 | static void | |
9005 | dwarf2_locate_dwo_sections (bfd *abfd, asection *sectp, void *dwo_sections_ptr) | |
9006 | { | |
9007 | struct dwo_sections *dwo_sections = dwo_sections_ptr; | |
9008 | const struct dwop_section_names *names = &dwop_section_names; | |
9009 | ||
9010 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
9011 | { | |
9012 | dwo_sections->abbrev.asection = sectp; | |
9013 | dwo_sections->abbrev.size = bfd_get_section_size (sectp); | |
9014 | } | |
9015 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
9016 | { | |
9017 | dwo_sections->info.asection = sectp; | |
9018 | dwo_sections->info.size = bfd_get_section_size (sectp); | |
9019 | } | |
9020 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
9021 | { | |
9022 | dwo_sections->line.asection = sectp; | |
9023 | dwo_sections->line.size = bfd_get_section_size (sectp); | |
9024 | } | |
9025 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
9026 | { | |
9027 | dwo_sections->loc.asection = sectp; | |
9028 | dwo_sections->loc.size = bfd_get_section_size (sectp); | |
9029 | } | |
9030 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
9031 | { | |
9032 | dwo_sections->macinfo.asection = sectp; | |
9033 | dwo_sections->macinfo.size = bfd_get_section_size (sectp); | |
9034 | } | |
9035 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
9036 | { | |
9037 | dwo_sections->macro.asection = sectp; | |
9038 | dwo_sections->macro.size = bfd_get_section_size (sectp); | |
9039 | } | |
9040 | else if (section_is_p (sectp->name, &names->str_dwo)) | |
9041 | { | |
9042 | dwo_sections->str.asection = sectp; | |
9043 | dwo_sections->str.size = bfd_get_section_size (sectp); | |
9044 | } | |
9045 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
9046 | { | |
9047 | dwo_sections->str_offsets.asection = sectp; | |
9048 | dwo_sections->str_offsets.size = bfd_get_section_size (sectp); | |
9049 | } | |
9050 | else if (section_is_p (sectp->name, &names->types_dwo)) | |
9051 | { | |
9052 | struct dwarf2_section_info type_section; | |
9053 | ||
9054 | memset (&type_section, 0, sizeof (type_section)); | |
9055 | type_section.asection = sectp; | |
9056 | type_section.size = bfd_get_section_size (sectp); | |
9057 | VEC_safe_push (dwarf2_section_info_def, dwo_sections->types, | |
9058 | &type_section); | |
9059 | } | |
9060 | } | |
9061 | ||
9062 | /* Initialize the use of the DWO file specified by DWO_NAME. | |
9063 | The result is NULL if DWO_NAME can't be found. */ | |
3019eac3 DE |
9064 | |
9065 | static struct dwo_file * | |
80626a55 | 9066 | open_and_init_dwo_file (const char *dwo_name, const char *comp_dir) |
3019eac3 DE |
9067 | { |
9068 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
80626a55 DE |
9069 | struct dwo_file *dwo_file; |
9070 | bfd *dbfd; | |
3019eac3 DE |
9071 | struct cleanup *cleanups; |
9072 | ||
80626a55 DE |
9073 | dbfd = open_dwop_file (dwo_name, comp_dir, 0); |
9074 | if (dbfd == NULL) | |
9075 | { | |
9076 | if (dwarf2_read_debug) | |
9077 | fprintf_unfiltered (gdb_stdlog, "DWO file not found: %s\n", dwo_name); | |
9078 | return NULL; | |
9079 | } | |
9080 | dwo_file = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_file); | |
9081 | dwo_file->name = obstack_copy0 (&objfile->objfile_obstack, | |
9082 | dwo_name, strlen (dwo_name)); | |
9083 | dwo_file->dbfd = dbfd; | |
3019eac3 DE |
9084 | |
9085 | cleanups = make_cleanup (free_dwo_file_cleanup, dwo_file); | |
9086 | ||
80626a55 | 9087 | bfd_map_over_sections (dbfd, dwarf2_locate_dwo_sections, &dwo_file->sections); |
3019eac3 | 9088 | |
80626a55 | 9089 | dwo_file->cus = create_dwo_debug_info_hash_table (dwo_file); |
3019eac3 DE |
9090 | |
9091 | dwo_file->tus = create_debug_types_hash_table (dwo_file, | |
9092 | dwo_file->sections.types); | |
9093 | ||
9094 | discard_cleanups (cleanups); | |
9095 | ||
80626a55 DE |
9096 | if (dwarf2_read_debug) |
9097 | fprintf_unfiltered (gdb_stdlog, "DWO file found: %s\n", dwo_name); | |
9098 | ||
3019eac3 DE |
9099 | return dwo_file; |
9100 | } | |
9101 | ||
80626a55 DE |
9102 | /* This function is mapped across the sections and remembers the offset and |
9103 | size of each of the DWP debugging sections we are interested in. */ | |
3019eac3 | 9104 | |
80626a55 DE |
9105 | static void |
9106 | dwarf2_locate_dwp_sections (bfd *abfd, asection *sectp, void *dwp_file_ptr) | |
3019eac3 | 9107 | { |
80626a55 DE |
9108 | struct dwp_file *dwp_file = dwp_file_ptr; |
9109 | const struct dwop_section_names *names = &dwop_section_names; | |
9110 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
3019eac3 | 9111 | |
80626a55 DE |
9112 | /* Record the ELF section number for later lookup: this is what the |
9113 | .debug_cu_index,.debug_tu_index tables use. */ | |
9114 | gdb_assert (elf_section_nr < dwp_file->num_sections); | |
9115 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
3019eac3 | 9116 | |
80626a55 DE |
9117 | /* Look for specific sections that we need. */ |
9118 | if (section_is_p (sectp->name, &names->str_dwo)) | |
9119 | { | |
9120 | dwp_file->sections.str.asection = sectp; | |
9121 | dwp_file->sections.str.size = bfd_get_section_size (sectp); | |
9122 | } | |
9123 | else if (section_is_p (sectp->name, &names->cu_index)) | |
9124 | { | |
9125 | dwp_file->sections.cu_index.asection = sectp; | |
9126 | dwp_file->sections.cu_index.size = bfd_get_section_size (sectp); | |
9127 | } | |
9128 | else if (section_is_p (sectp->name, &names->tu_index)) | |
9129 | { | |
9130 | dwp_file->sections.tu_index.asection = sectp; | |
9131 | dwp_file->sections.tu_index.size = bfd_get_section_size (sectp); | |
9132 | } | |
9133 | } | |
3019eac3 | 9134 | |
80626a55 | 9135 | /* Hash function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 9136 | |
80626a55 DE |
9137 | static hashval_t |
9138 | hash_dwp_loaded_cutus (const void *item) | |
9139 | { | |
9140 | const struct dwo_unit *dwo_unit = item; | |
3019eac3 | 9141 | |
80626a55 DE |
9142 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
9143 | return dwo_unit->signature; | |
3019eac3 DE |
9144 | } |
9145 | ||
80626a55 | 9146 | /* Equality function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 9147 | |
80626a55 DE |
9148 | static int |
9149 | eq_dwp_loaded_cutus (const void *a, const void *b) | |
3019eac3 | 9150 | { |
80626a55 DE |
9151 | const struct dwo_unit *dua = a; |
9152 | const struct dwo_unit *dub = b; | |
3019eac3 | 9153 | |
80626a55 DE |
9154 | return dua->signature == dub->signature; |
9155 | } | |
3019eac3 | 9156 | |
80626a55 | 9157 | /* Allocate a hash table for dwp_file loaded CUs/TUs. */ |
3019eac3 | 9158 | |
80626a55 DE |
9159 | static htab_t |
9160 | allocate_dwp_loaded_cutus_table (struct objfile *objfile) | |
9161 | { | |
9162 | return htab_create_alloc_ex (3, | |
9163 | hash_dwp_loaded_cutus, | |
9164 | eq_dwp_loaded_cutus, | |
9165 | NULL, | |
9166 | &objfile->objfile_obstack, | |
9167 | hashtab_obstack_allocate, | |
9168 | dummy_obstack_deallocate); | |
9169 | } | |
3019eac3 | 9170 | |
80626a55 DE |
9171 | /* Initialize the use of the DWP file for the current objfile. |
9172 | By convention the name of the DWP file is ${objfile}.dwp. | |
9173 | The result is NULL if it can't be found. */ | |
a766d390 | 9174 | |
80626a55 DE |
9175 | static struct dwp_file * |
9176 | open_and_init_dwp_file (const char *comp_dir) | |
9177 | { | |
9178 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
9179 | struct dwp_file *dwp_file; | |
9180 | char *dwp_name; | |
9181 | bfd *dbfd; | |
9182 | struct cleanup *cleanups; | |
9183 | ||
2792b94d | 9184 | dwp_name = xstrprintf ("%s.dwp", dwarf2_per_objfile->objfile->name); |
80626a55 DE |
9185 | cleanups = make_cleanup (xfree, dwp_name); |
9186 | ||
9187 | dbfd = open_dwop_file (dwp_name, comp_dir, 1); | |
9188 | if (dbfd == NULL) | |
9189 | { | |
9190 | if (dwarf2_read_debug) | |
9191 | fprintf_unfiltered (gdb_stdlog, "DWP file not found: %s\n", dwp_name); | |
9192 | do_cleanups (cleanups); | |
9193 | return NULL; | |
3019eac3 | 9194 | } |
80626a55 DE |
9195 | dwp_file = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwp_file); |
9196 | dwp_file->name = obstack_copy0 (&objfile->objfile_obstack, | |
9197 | dwp_name, strlen (dwp_name)); | |
9198 | dwp_file->dbfd = dbfd; | |
9199 | do_cleanups (cleanups); | |
c906108c | 9200 | |
80626a55 | 9201 | cleanups = make_cleanup (free_dwo_file_cleanup, dwp_file); |
df8a16a1 | 9202 | |
80626a55 DE |
9203 | /* +1: section 0 is unused */ |
9204 | dwp_file->num_sections = bfd_count_sections (dbfd) + 1; | |
9205 | dwp_file->elf_sections = | |
9206 | OBSTACK_CALLOC (&objfile->objfile_obstack, | |
9207 | dwp_file->num_sections, asection *); | |
9208 | ||
9209 | bfd_map_over_sections (dbfd, dwarf2_locate_dwp_sections, dwp_file); | |
9210 | ||
9211 | dwp_file->cus = create_dwp_hash_table (dwp_file, 0); | |
9212 | ||
9213 | dwp_file->tus = create_dwp_hash_table (dwp_file, 1); | |
9214 | ||
9215 | dwp_file->loaded_cutus = allocate_dwp_loaded_cutus_table (objfile); | |
9216 | ||
9217 | discard_cleanups (cleanups); | |
9218 | ||
9219 | if (dwarf2_read_debug) | |
9220 | { | |
9221 | fprintf_unfiltered (gdb_stdlog, "DWP file found: %s\n", dwp_file->name); | |
9222 | fprintf_unfiltered (gdb_stdlog, | |
9223 | " %u CUs, %u TUs\n", | |
9224 | dwp_file->cus ? dwp_file->cus->nr_units : 0, | |
9225 | dwp_file->tus ? dwp_file->tus->nr_units : 0); | |
9226 | } | |
9227 | ||
9228 | return dwp_file; | |
3019eac3 | 9229 | } |
c906108c | 9230 | |
80626a55 DE |
9231 | /* Subroutine of lookup_dwo_comp_unit, lookup_dwo_type_unit. |
9232 | Look up the CU/TU with signature SIGNATURE, either in DWO file DWO_NAME | |
9233 | or in the DWP file for the objfile, referenced by THIS_UNIT. | |
3019eac3 | 9234 | If non-NULL, comp_dir is the DW_AT_comp_dir attribute. |
80626a55 DE |
9235 | IS_DEBUG_TYPES is non-zero if reading a TU, otherwise read a CU. |
9236 | ||
9237 | This is called, for example, when wanting to read a variable with a | |
9238 | complex location. Therefore we don't want to do file i/o for every call. | |
9239 | Therefore we don't want to look for a DWO file on every call. | |
9240 | Therefore we first see if we've already seen SIGNATURE in a DWP file, | |
9241 | then we check if we've already seen DWO_NAME, and only THEN do we check | |
9242 | for a DWO file. | |
9243 | ||
1c658ad5 | 9244 | The result is a pointer to the dwo_unit object or NULL if we didn't find it |
80626a55 | 9245 | (dwo_id mismatch or couldn't find the DWO/DWP file). */ |
debd256d | 9246 | |
3019eac3 | 9247 | static struct dwo_unit * |
80626a55 DE |
9248 | lookup_dwo_cutu (struct dwarf2_per_cu_data *this_unit, |
9249 | const char *dwo_name, const char *comp_dir, | |
9250 | ULONGEST signature, int is_debug_types) | |
3019eac3 DE |
9251 | { |
9252 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
80626a55 DE |
9253 | const char *kind = is_debug_types ? "TU" : "CU"; |
9254 | void **dwo_file_slot; | |
3019eac3 | 9255 | struct dwo_file *dwo_file; |
80626a55 | 9256 | struct dwp_file *dwp_file; |
cb1df416 | 9257 | |
80626a55 | 9258 | /* Have we already read SIGNATURE from a DWP file? */ |
cf2c3c16 | 9259 | |
80626a55 DE |
9260 | if (! dwarf2_per_objfile->dwp_checked) |
9261 | { | |
9262 | dwarf2_per_objfile->dwp_file = open_and_init_dwp_file (comp_dir); | |
9263 | dwarf2_per_objfile->dwp_checked = 1; | |
9264 | } | |
9265 | dwp_file = dwarf2_per_objfile->dwp_file; | |
3019eac3 | 9266 | |
80626a55 | 9267 | if (dwp_file != NULL) |
cf2c3c16 | 9268 | { |
80626a55 DE |
9269 | const struct dwp_hash_table *dwp_htab = |
9270 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
9271 | ||
9272 | if (dwp_htab != NULL) | |
9273 | { | |
9274 | struct dwo_unit *dwo_cutu = | |
9275 | lookup_dwo_in_dwp (dwp_file, dwp_htab, signature, is_debug_types); | |
9276 | ||
9277 | if (dwo_cutu != NULL) | |
9278 | { | |
9279 | if (dwarf2_read_debug) | |
9280 | { | |
9281 | fprintf_unfiltered (gdb_stdlog, | |
9282 | "Virtual DWO %s %s found: @%s\n", | |
9283 | kind, hex_string (signature), | |
9284 | host_address_to_string (dwo_cutu)); | |
9285 | } | |
9286 | return dwo_cutu; | |
9287 | } | |
9288 | } | |
9289 | } | |
9290 | ||
9291 | /* Have we already seen DWO_NAME? */ | |
9292 | ||
9293 | dwo_file_slot = lookup_dwo_file_slot (dwo_name); | |
9294 | if (*dwo_file_slot == NULL) | |
9295 | { | |
9296 | /* Read in the file and build a table of the DWOs it contains. */ | |
9297 | *dwo_file_slot = open_and_init_dwo_file (dwo_name, comp_dir); | |
9298 | } | |
9299 | /* NOTE: This will be NULL if unable to open the file. */ | |
9300 | dwo_file = *dwo_file_slot; | |
9301 | ||
9302 | if (dwo_file != NULL) | |
9303 | { | |
9304 | htab_t htab = is_debug_types ? dwo_file->tus : dwo_file->cus; | |
9305 | ||
9306 | if (htab != NULL) | |
9307 | { | |
9308 | struct dwo_unit find_dwo_cutu, *dwo_cutu; | |
9a619af0 | 9309 | |
80626a55 DE |
9310 | memset (&find_dwo_cutu, 0, sizeof (find_dwo_cutu)); |
9311 | find_dwo_cutu.signature = signature; | |
9312 | dwo_cutu = htab_find (htab, &find_dwo_cutu); | |
3019eac3 | 9313 | |
80626a55 DE |
9314 | if (dwo_cutu != NULL) |
9315 | { | |
9316 | if (dwarf2_read_debug) | |
9317 | { | |
9318 | fprintf_unfiltered (gdb_stdlog, "DWO %s %s(%s) found: @%s\n", | |
9319 | kind, dwo_name, hex_string (signature), | |
9320 | host_address_to_string (dwo_cutu)); | |
9321 | } | |
9322 | return dwo_cutu; | |
9323 | } | |
9324 | } | |
2e276125 | 9325 | } |
9cdd5dbd | 9326 | |
80626a55 DE |
9327 | /* We didn't find it. This could mean a dwo_id mismatch, or |
9328 | someone deleted the DWO/DWP file, or the search path isn't set up | |
9329 | correctly to find the file. */ | |
9330 | ||
9331 | if (dwarf2_read_debug) | |
9332 | { | |
9333 | fprintf_unfiltered (gdb_stdlog, "DWO %s %s(%s) not found\n", | |
9334 | kind, dwo_name, hex_string (signature)); | |
9335 | } | |
3019eac3 DE |
9336 | |
9337 | complaint (&symfile_complaints, | |
80626a55 | 9338 | _("Could not find DWO CU referenced by CU at offset 0x%x" |
3019eac3 | 9339 | " [in module %s]"), |
80626a55 | 9340 | this_unit->offset.sect_off, objfile->name); |
3019eac3 | 9341 | return NULL; |
5fb290d7 DJ |
9342 | } |
9343 | ||
80626a55 DE |
9344 | /* Lookup the DWO CU DWO_NAME/SIGNATURE referenced from THIS_CU. |
9345 | See lookup_dwo_cutu_unit for details. */ | |
9346 | ||
9347 | static struct dwo_unit * | |
9348 | lookup_dwo_comp_unit (struct dwarf2_per_cu_data *this_cu, | |
9349 | const char *dwo_name, const char *comp_dir, | |
9350 | ULONGEST signature) | |
9351 | { | |
9352 | return lookup_dwo_cutu (this_cu, dwo_name, comp_dir, signature, 0); | |
9353 | } | |
9354 | ||
9355 | /* Lookup the DWO TU DWO_NAME/SIGNATURE referenced from THIS_TU. | |
9356 | See lookup_dwo_cutu_unit for details. */ | |
9357 | ||
9358 | static struct dwo_unit * | |
9359 | lookup_dwo_type_unit (struct signatured_type *this_tu, | |
9360 | const char *dwo_name, const char *comp_dir) | |
9361 | { | |
9362 | return lookup_dwo_cutu (&this_tu->per_cu, dwo_name, comp_dir, this_tu->signature, 1); | |
9363 | } | |
9364 | ||
3019eac3 DE |
9365 | /* Free all resources associated with DWO_FILE. |
9366 | Close the DWO file and munmap the sections. | |
9367 | All memory should be on the objfile obstack. */ | |
348e048f DE |
9368 | |
9369 | static void | |
3019eac3 | 9370 | free_dwo_file (struct dwo_file *dwo_file, struct objfile *objfile) |
348e048f | 9371 | { |
3019eac3 DE |
9372 | int ix; |
9373 | struct dwarf2_section_info *section; | |
348e048f | 9374 | |
80626a55 | 9375 | gdb_bfd_unref (dwo_file->dbfd); |
348e048f | 9376 | |
3019eac3 DE |
9377 | VEC_free (dwarf2_section_info_def, dwo_file->sections.types); |
9378 | } | |
348e048f | 9379 | |
3019eac3 | 9380 | /* Wrapper for free_dwo_file for use in cleanups. */ |
348e048f | 9381 | |
3019eac3 DE |
9382 | static void |
9383 | free_dwo_file_cleanup (void *arg) | |
9384 | { | |
9385 | struct dwo_file *dwo_file = (struct dwo_file *) arg; | |
9386 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
348e048f | 9387 | |
3019eac3 DE |
9388 | free_dwo_file (dwo_file, objfile); |
9389 | } | |
348e048f | 9390 | |
3019eac3 | 9391 | /* Traversal function for free_dwo_files. */ |
2ab95328 | 9392 | |
3019eac3 DE |
9393 | static int |
9394 | free_dwo_file_from_slot (void **slot, void *info) | |
9395 | { | |
9396 | struct dwo_file *dwo_file = (struct dwo_file *) *slot; | |
9397 | struct objfile *objfile = (struct objfile *) info; | |
348e048f | 9398 | |
3019eac3 | 9399 | free_dwo_file (dwo_file, objfile); |
348e048f | 9400 | |
3019eac3 DE |
9401 | return 1; |
9402 | } | |
348e048f | 9403 | |
3019eac3 | 9404 | /* Free all resources associated with DWO_FILES. */ |
348e048f | 9405 | |
3019eac3 DE |
9406 | static void |
9407 | free_dwo_files (htab_t dwo_files, struct objfile *objfile) | |
9408 | { | |
9409 | htab_traverse_noresize (dwo_files, free_dwo_file_from_slot, objfile); | |
348e048f | 9410 | } |
3019eac3 DE |
9411 | \f |
9412 | /* Read in various DIEs. */ | |
348e048f | 9413 | |
d389af10 JK |
9414 | /* qsort helper for inherit_abstract_dies. */ |
9415 | ||
9416 | static int | |
9417 | unsigned_int_compar (const void *ap, const void *bp) | |
9418 | { | |
9419 | unsigned int a = *(unsigned int *) ap; | |
9420 | unsigned int b = *(unsigned int *) bp; | |
9421 | ||
9422 | return (a > b) - (b > a); | |
9423 | } | |
9424 | ||
9425 | /* DW_AT_abstract_origin inherits whole DIEs (not just their attributes). | |
3e43a32a MS |
9426 | Inherit only the children of the DW_AT_abstract_origin DIE not being |
9427 | already referenced by DW_AT_abstract_origin from the children of the | |
9428 | current DIE. */ | |
d389af10 JK |
9429 | |
9430 | static void | |
9431 | inherit_abstract_dies (struct die_info *die, struct dwarf2_cu *cu) | |
9432 | { | |
9433 | struct die_info *child_die; | |
9434 | unsigned die_children_count; | |
9435 | /* CU offsets which were referenced by children of the current DIE. */ | |
b64f50a1 JK |
9436 | sect_offset *offsets; |
9437 | sect_offset *offsets_end, *offsetp; | |
d389af10 JK |
9438 | /* Parent of DIE - referenced by DW_AT_abstract_origin. */ |
9439 | struct die_info *origin_die; | |
9440 | /* Iterator of the ORIGIN_DIE children. */ | |
9441 | struct die_info *origin_child_die; | |
9442 | struct cleanup *cleanups; | |
9443 | struct attribute *attr; | |
cd02d79d PA |
9444 | struct dwarf2_cu *origin_cu; |
9445 | struct pending **origin_previous_list_in_scope; | |
d389af10 JK |
9446 | |
9447 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
9448 | if (!attr) | |
9449 | return; | |
9450 | ||
cd02d79d PA |
9451 | /* Note that following die references may follow to a die in a |
9452 | different cu. */ | |
9453 | ||
9454 | origin_cu = cu; | |
9455 | origin_die = follow_die_ref (die, attr, &origin_cu); | |
9456 | ||
9457 | /* We're inheriting ORIGIN's children into the scope we'd put DIE's | |
9458 | symbols in. */ | |
9459 | origin_previous_list_in_scope = origin_cu->list_in_scope; | |
9460 | origin_cu->list_in_scope = cu->list_in_scope; | |
9461 | ||
edb3359d DJ |
9462 | if (die->tag != origin_die->tag |
9463 | && !(die->tag == DW_TAG_inlined_subroutine | |
9464 | && origin_die->tag == DW_TAG_subprogram)) | |
d389af10 JK |
9465 | complaint (&symfile_complaints, |
9466 | _("DIE 0x%x and its abstract origin 0x%x have different tags"), | |
b64f50a1 | 9467 | die->offset.sect_off, origin_die->offset.sect_off); |
d389af10 JK |
9468 | |
9469 | child_die = die->child; | |
9470 | die_children_count = 0; | |
9471 | while (child_die && child_die->tag) | |
9472 | { | |
9473 | child_die = sibling_die (child_die); | |
9474 | die_children_count++; | |
9475 | } | |
9476 | offsets = xmalloc (sizeof (*offsets) * die_children_count); | |
9477 | cleanups = make_cleanup (xfree, offsets); | |
9478 | ||
9479 | offsets_end = offsets; | |
9480 | child_die = die->child; | |
9481 | while (child_die && child_die->tag) | |
9482 | { | |
c38f313d DJ |
9483 | /* For each CHILD_DIE, find the corresponding child of |
9484 | ORIGIN_DIE. If there is more than one layer of | |
9485 | DW_AT_abstract_origin, follow them all; there shouldn't be, | |
9486 | but GCC versions at least through 4.4 generate this (GCC PR | |
9487 | 40573). */ | |
9488 | struct die_info *child_origin_die = child_die; | |
cd02d79d | 9489 | struct dwarf2_cu *child_origin_cu = cu; |
9a619af0 | 9490 | |
c38f313d DJ |
9491 | while (1) |
9492 | { | |
cd02d79d PA |
9493 | attr = dwarf2_attr (child_origin_die, DW_AT_abstract_origin, |
9494 | child_origin_cu); | |
c38f313d DJ |
9495 | if (attr == NULL) |
9496 | break; | |
cd02d79d PA |
9497 | child_origin_die = follow_die_ref (child_origin_die, attr, |
9498 | &child_origin_cu); | |
c38f313d DJ |
9499 | } |
9500 | ||
d389af10 JK |
9501 | /* According to DWARF3 3.3.8.2 #3 new entries without their abstract |
9502 | counterpart may exist. */ | |
c38f313d | 9503 | if (child_origin_die != child_die) |
d389af10 | 9504 | { |
edb3359d DJ |
9505 | if (child_die->tag != child_origin_die->tag |
9506 | && !(child_die->tag == DW_TAG_inlined_subroutine | |
9507 | && child_origin_die->tag == DW_TAG_subprogram)) | |
d389af10 JK |
9508 | complaint (&symfile_complaints, |
9509 | _("Child DIE 0x%x and its abstract origin 0x%x have " | |
b64f50a1 JK |
9510 | "different tags"), child_die->offset.sect_off, |
9511 | child_origin_die->offset.sect_off); | |
c38f313d DJ |
9512 | if (child_origin_die->parent != origin_die) |
9513 | complaint (&symfile_complaints, | |
9514 | _("Child DIE 0x%x and its abstract origin 0x%x have " | |
b64f50a1 JK |
9515 | "different parents"), child_die->offset.sect_off, |
9516 | child_origin_die->offset.sect_off); | |
c38f313d DJ |
9517 | else |
9518 | *offsets_end++ = child_origin_die->offset; | |
d389af10 JK |
9519 | } |
9520 | child_die = sibling_die (child_die); | |
9521 | } | |
9522 | qsort (offsets, offsets_end - offsets, sizeof (*offsets), | |
9523 | unsigned_int_compar); | |
9524 | for (offsetp = offsets + 1; offsetp < offsets_end; offsetp++) | |
b64f50a1 | 9525 | if (offsetp[-1].sect_off == offsetp->sect_off) |
3e43a32a MS |
9526 | complaint (&symfile_complaints, |
9527 | _("Multiple children of DIE 0x%x refer " | |
9528 | "to DIE 0x%x as their abstract origin"), | |
b64f50a1 | 9529 | die->offset.sect_off, offsetp->sect_off); |
d389af10 JK |
9530 | |
9531 | offsetp = offsets; | |
9532 | origin_child_die = origin_die->child; | |
9533 | while (origin_child_die && origin_child_die->tag) | |
9534 | { | |
9535 | /* Is ORIGIN_CHILD_DIE referenced by any of the DIE children? */ | |
b64f50a1 JK |
9536 | while (offsetp < offsets_end |
9537 | && offsetp->sect_off < origin_child_die->offset.sect_off) | |
d389af10 | 9538 | offsetp++; |
b64f50a1 JK |
9539 | if (offsetp >= offsets_end |
9540 | || offsetp->sect_off > origin_child_die->offset.sect_off) | |
d389af10 JK |
9541 | { |
9542 | /* Found that ORIGIN_CHILD_DIE is really not referenced. */ | |
cd02d79d | 9543 | process_die (origin_child_die, origin_cu); |
d389af10 JK |
9544 | } |
9545 | origin_child_die = sibling_die (origin_child_die); | |
9546 | } | |
cd02d79d | 9547 | origin_cu->list_in_scope = origin_previous_list_in_scope; |
d389af10 JK |
9548 | |
9549 | do_cleanups (cleanups); | |
9550 | } | |
9551 | ||
c906108c | 9552 | static void |
e7c27a73 | 9553 | read_func_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 9554 | { |
e7c27a73 | 9555 | struct objfile *objfile = cu->objfile; |
52f0bd74 | 9556 | struct context_stack *new; |
c906108c SS |
9557 | CORE_ADDR lowpc; |
9558 | CORE_ADDR highpc; | |
9559 | struct die_info *child_die; | |
edb3359d | 9560 | struct attribute *attr, *call_line, *call_file; |
15d034d0 | 9561 | const char *name; |
e142c38c | 9562 | CORE_ADDR baseaddr; |
801e3a5b | 9563 | struct block *block; |
edb3359d | 9564 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
34eaf542 TT |
9565 | VEC (symbolp) *template_args = NULL; |
9566 | struct template_symbol *templ_func = NULL; | |
edb3359d DJ |
9567 | |
9568 | if (inlined_func) | |
9569 | { | |
9570 | /* If we do not have call site information, we can't show the | |
9571 | caller of this inlined function. That's too confusing, so | |
9572 | only use the scope for local variables. */ | |
9573 | call_line = dwarf2_attr (die, DW_AT_call_line, cu); | |
9574 | call_file = dwarf2_attr (die, DW_AT_call_file, cu); | |
9575 | if (call_line == NULL || call_file == NULL) | |
9576 | { | |
9577 | read_lexical_block_scope (die, cu); | |
9578 | return; | |
9579 | } | |
9580 | } | |
c906108c | 9581 | |
e142c38c DJ |
9582 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
9583 | ||
94af9270 | 9584 | name = dwarf2_name (die, cu); |
c906108c | 9585 | |
e8d05480 JB |
9586 | /* Ignore functions with missing or empty names. These are actually |
9587 | illegal according to the DWARF standard. */ | |
9588 | if (name == NULL) | |
9589 | { | |
9590 | complaint (&symfile_complaints, | |
b64f50a1 JK |
9591 | _("missing name for subprogram DIE at %d"), |
9592 | die->offset.sect_off); | |
e8d05480 JB |
9593 | return; |
9594 | } | |
9595 | ||
9596 | /* Ignore functions with missing or invalid low and high pc attributes. */ | |
9597 | if (!dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL)) | |
9598 | { | |
ae4d0c03 PM |
9599 | attr = dwarf2_attr (die, DW_AT_external, cu); |
9600 | if (!attr || !DW_UNSND (attr)) | |
9601 | complaint (&symfile_complaints, | |
3e43a32a MS |
9602 | _("cannot get low and high bounds " |
9603 | "for subprogram DIE at %d"), | |
b64f50a1 | 9604 | die->offset.sect_off); |
e8d05480 JB |
9605 | return; |
9606 | } | |
c906108c SS |
9607 | |
9608 | lowpc += baseaddr; | |
9609 | highpc += baseaddr; | |
9610 | ||
34eaf542 TT |
9611 | /* If we have any template arguments, then we must allocate a |
9612 | different sort of symbol. */ | |
9613 | for (child_die = die->child; child_die; child_die = sibling_die (child_die)) | |
9614 | { | |
9615 | if (child_die->tag == DW_TAG_template_type_param | |
9616 | || child_die->tag == DW_TAG_template_value_param) | |
9617 | { | |
9618 | templ_func = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
9619 | struct template_symbol); | |
9620 | templ_func->base.is_cplus_template_function = 1; | |
9621 | break; | |
9622 | } | |
9623 | } | |
9624 | ||
c906108c | 9625 | new = push_context (0, lowpc); |
34eaf542 TT |
9626 | new->name = new_symbol_full (die, read_type_die (die, cu), cu, |
9627 | (struct symbol *) templ_func); | |
4c2df51b | 9628 | |
4cecd739 DJ |
9629 | /* If there is a location expression for DW_AT_frame_base, record |
9630 | it. */ | |
e142c38c | 9631 | attr = dwarf2_attr (die, DW_AT_frame_base, cu); |
4c2df51b | 9632 | if (attr) |
f1e6e072 | 9633 | dwarf2_symbol_mark_computed (attr, new->name, cu, 1); |
4c2df51b | 9634 | |
e142c38c | 9635 | cu->list_in_scope = &local_symbols; |
c906108c | 9636 | |
639d11d3 | 9637 | if (die->child != NULL) |
c906108c | 9638 | { |
639d11d3 | 9639 | child_die = die->child; |
c906108c SS |
9640 | while (child_die && child_die->tag) |
9641 | { | |
34eaf542 TT |
9642 | if (child_die->tag == DW_TAG_template_type_param |
9643 | || child_die->tag == DW_TAG_template_value_param) | |
9644 | { | |
9645 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
9646 | ||
f1078f66 DJ |
9647 | if (arg != NULL) |
9648 | VEC_safe_push (symbolp, template_args, arg); | |
34eaf542 TT |
9649 | } |
9650 | else | |
9651 | process_die (child_die, cu); | |
c906108c SS |
9652 | child_die = sibling_die (child_die); |
9653 | } | |
9654 | } | |
9655 | ||
d389af10 JK |
9656 | inherit_abstract_dies (die, cu); |
9657 | ||
4a811a97 UW |
9658 | /* If we have a DW_AT_specification, we might need to import using |
9659 | directives from the context of the specification DIE. See the | |
9660 | comment in determine_prefix. */ | |
9661 | if (cu->language == language_cplus | |
9662 | && dwarf2_attr (die, DW_AT_specification, cu)) | |
9663 | { | |
9664 | struct dwarf2_cu *spec_cu = cu; | |
9665 | struct die_info *spec_die = die_specification (die, &spec_cu); | |
9666 | ||
9667 | while (spec_die) | |
9668 | { | |
9669 | child_die = spec_die->child; | |
9670 | while (child_die && child_die->tag) | |
9671 | { | |
9672 | if (child_die->tag == DW_TAG_imported_module) | |
9673 | process_die (child_die, spec_cu); | |
9674 | child_die = sibling_die (child_die); | |
9675 | } | |
9676 | ||
9677 | /* In some cases, GCC generates specification DIEs that | |
9678 | themselves contain DW_AT_specification attributes. */ | |
9679 | spec_die = die_specification (spec_die, &spec_cu); | |
9680 | } | |
9681 | } | |
9682 | ||
c906108c SS |
9683 | new = pop_context (); |
9684 | /* Make a block for the local symbols within. */ | |
801e3a5b JB |
9685 | block = finish_block (new->name, &local_symbols, new->old_blocks, |
9686 | lowpc, highpc, objfile); | |
9687 | ||
df8a16a1 | 9688 | /* For C++, set the block's scope. */ |
195a3f6c | 9689 | if ((cu->language == language_cplus || cu->language == language_fortran) |
4d4ec4e5 | 9690 | && cu->processing_has_namespace_info) |
195a3f6c TT |
9691 | block_set_scope (block, determine_prefix (die, cu), |
9692 | &objfile->objfile_obstack); | |
df8a16a1 | 9693 | |
801e3a5b JB |
9694 | /* If we have address ranges, record them. */ |
9695 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
6e70227d | 9696 | |
34eaf542 TT |
9697 | /* Attach template arguments to function. */ |
9698 | if (! VEC_empty (symbolp, template_args)) | |
9699 | { | |
9700 | gdb_assert (templ_func != NULL); | |
9701 | ||
9702 | templ_func->n_template_arguments = VEC_length (symbolp, template_args); | |
9703 | templ_func->template_arguments | |
9704 | = obstack_alloc (&objfile->objfile_obstack, | |
9705 | (templ_func->n_template_arguments | |
9706 | * sizeof (struct symbol *))); | |
9707 | memcpy (templ_func->template_arguments, | |
9708 | VEC_address (symbolp, template_args), | |
9709 | (templ_func->n_template_arguments * sizeof (struct symbol *))); | |
9710 | VEC_free (symbolp, template_args); | |
9711 | } | |
9712 | ||
208d8187 JB |
9713 | /* In C++, we can have functions nested inside functions (e.g., when |
9714 | a function declares a class that has methods). This means that | |
9715 | when we finish processing a function scope, we may need to go | |
9716 | back to building a containing block's symbol lists. */ | |
9717 | local_symbols = new->locals; | |
27aa8d6a | 9718 | using_directives = new->using_directives; |
208d8187 | 9719 | |
921e78cf JB |
9720 | /* If we've finished processing a top-level function, subsequent |
9721 | symbols go in the file symbol list. */ | |
9722 | if (outermost_context_p ()) | |
e142c38c | 9723 | cu->list_in_scope = &file_symbols; |
c906108c SS |
9724 | } |
9725 | ||
9726 | /* Process all the DIES contained within a lexical block scope. Start | |
9727 | a new scope, process the dies, and then close the scope. */ | |
9728 | ||
9729 | static void | |
e7c27a73 | 9730 | read_lexical_block_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 9731 | { |
e7c27a73 | 9732 | struct objfile *objfile = cu->objfile; |
52f0bd74 | 9733 | struct context_stack *new; |
c906108c SS |
9734 | CORE_ADDR lowpc, highpc; |
9735 | struct die_info *child_die; | |
e142c38c DJ |
9736 | CORE_ADDR baseaddr; |
9737 | ||
9738 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c SS |
9739 | |
9740 | /* Ignore blocks with missing or invalid low and high pc attributes. */ | |
af34e669 DJ |
9741 | /* ??? Perhaps consider discontiguous blocks defined by DW_AT_ranges |
9742 | as multiple lexical blocks? Handling children in a sane way would | |
6e70227d | 9743 | be nasty. Might be easier to properly extend generic blocks to |
af34e669 | 9744 | describe ranges. */ |
d85a05f0 | 9745 | if (!dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL)) |
c906108c SS |
9746 | return; |
9747 | lowpc += baseaddr; | |
9748 | highpc += baseaddr; | |
9749 | ||
9750 | push_context (0, lowpc); | |
639d11d3 | 9751 | if (die->child != NULL) |
c906108c | 9752 | { |
639d11d3 | 9753 | child_die = die->child; |
c906108c SS |
9754 | while (child_die && child_die->tag) |
9755 | { | |
e7c27a73 | 9756 | process_die (child_die, cu); |
c906108c SS |
9757 | child_die = sibling_die (child_die); |
9758 | } | |
9759 | } | |
9760 | new = pop_context (); | |
9761 | ||
8540c487 | 9762 | if (local_symbols != NULL || using_directives != NULL) |
c906108c | 9763 | { |
801e3a5b JB |
9764 | struct block *block |
9765 | = finish_block (0, &local_symbols, new->old_blocks, new->start_addr, | |
9766 | highpc, objfile); | |
9767 | ||
9768 | /* Note that recording ranges after traversing children, as we | |
9769 | do here, means that recording a parent's ranges entails | |
9770 | walking across all its children's ranges as they appear in | |
9771 | the address map, which is quadratic behavior. | |
9772 | ||
9773 | It would be nicer to record the parent's ranges before | |
9774 | traversing its children, simply overriding whatever you find | |
9775 | there. But since we don't even decide whether to create a | |
9776 | block until after we've traversed its children, that's hard | |
9777 | to do. */ | |
9778 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
c906108c SS |
9779 | } |
9780 | local_symbols = new->locals; | |
27aa8d6a | 9781 | using_directives = new->using_directives; |
c906108c SS |
9782 | } |
9783 | ||
96408a79 SA |
9784 | /* Read in DW_TAG_GNU_call_site and insert it to CU->call_site_htab. */ |
9785 | ||
9786 | static void | |
9787 | read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu) | |
9788 | { | |
9789 | struct objfile *objfile = cu->objfile; | |
9790 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
9791 | CORE_ADDR pc, baseaddr; | |
9792 | struct attribute *attr; | |
9793 | struct call_site *call_site, call_site_local; | |
9794 | void **slot; | |
9795 | int nparams; | |
9796 | struct die_info *child_die; | |
9797 | ||
9798 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
9799 | ||
9800 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
9801 | if (!attr) | |
9802 | { | |
9803 | complaint (&symfile_complaints, | |
9804 | _("missing DW_AT_low_pc for DW_TAG_GNU_call_site " | |
9805 | "DIE 0x%x [in module %s]"), | |
b64f50a1 | 9806 | die->offset.sect_off, objfile->name); |
96408a79 SA |
9807 | return; |
9808 | } | |
9809 | pc = DW_ADDR (attr) + baseaddr; | |
9810 | ||
9811 | if (cu->call_site_htab == NULL) | |
9812 | cu->call_site_htab = htab_create_alloc_ex (16, core_addr_hash, core_addr_eq, | |
9813 | NULL, &objfile->objfile_obstack, | |
9814 | hashtab_obstack_allocate, NULL); | |
9815 | call_site_local.pc = pc; | |
9816 | slot = htab_find_slot (cu->call_site_htab, &call_site_local, INSERT); | |
9817 | if (*slot != NULL) | |
9818 | { | |
9819 | complaint (&symfile_complaints, | |
9820 | _("Duplicate PC %s for DW_TAG_GNU_call_site " | |
9821 | "DIE 0x%x [in module %s]"), | |
b64f50a1 | 9822 | paddress (gdbarch, pc), die->offset.sect_off, objfile->name); |
96408a79 SA |
9823 | return; |
9824 | } | |
9825 | ||
9826 | /* Count parameters at the caller. */ | |
9827 | ||
9828 | nparams = 0; | |
9829 | for (child_die = die->child; child_die && child_die->tag; | |
9830 | child_die = sibling_die (child_die)) | |
9831 | { | |
9832 | if (child_die->tag != DW_TAG_GNU_call_site_parameter) | |
9833 | { | |
9834 | complaint (&symfile_complaints, | |
9835 | _("Tag %d is not DW_TAG_GNU_call_site_parameter in " | |
9836 | "DW_TAG_GNU_call_site child DIE 0x%x [in module %s]"), | |
b64f50a1 | 9837 | child_die->tag, child_die->offset.sect_off, objfile->name); |
96408a79 SA |
9838 | continue; |
9839 | } | |
9840 | ||
9841 | nparams++; | |
9842 | } | |
9843 | ||
9844 | call_site = obstack_alloc (&objfile->objfile_obstack, | |
9845 | (sizeof (*call_site) | |
9846 | + (sizeof (*call_site->parameter) | |
9847 | * (nparams - 1)))); | |
9848 | *slot = call_site; | |
9849 | memset (call_site, 0, sizeof (*call_site) - sizeof (*call_site->parameter)); | |
9850 | call_site->pc = pc; | |
9851 | ||
9852 | if (dwarf2_flag_true_p (die, DW_AT_GNU_tail_call, cu)) | |
9853 | { | |
9854 | struct die_info *func_die; | |
9855 | ||
9856 | /* Skip also over DW_TAG_inlined_subroutine. */ | |
9857 | for (func_die = die->parent; | |
9858 | func_die && func_die->tag != DW_TAG_subprogram | |
9859 | && func_die->tag != DW_TAG_subroutine_type; | |
9860 | func_die = func_die->parent); | |
9861 | ||
9862 | /* DW_AT_GNU_all_call_sites is a superset | |
9863 | of DW_AT_GNU_all_tail_call_sites. */ | |
9864 | if (func_die | |
9865 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_call_sites, cu) | |
9866 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_tail_call_sites, cu)) | |
9867 | { | |
9868 | /* TYPE_TAIL_CALL_LIST is not interesting in functions where it is | |
9869 | not complete. But keep CALL_SITE for look ups via call_site_htab, | |
9870 | both the initial caller containing the real return address PC and | |
9871 | the final callee containing the current PC of a chain of tail | |
9872 | calls do not need to have the tail call list complete. But any | |
9873 | function candidate for a virtual tail call frame searched via | |
9874 | TYPE_TAIL_CALL_LIST must have the tail call list complete to be | |
9875 | determined unambiguously. */ | |
9876 | } | |
9877 | else | |
9878 | { | |
9879 | struct type *func_type = NULL; | |
9880 | ||
9881 | if (func_die) | |
9882 | func_type = get_die_type (func_die, cu); | |
9883 | if (func_type != NULL) | |
9884 | { | |
9885 | gdb_assert (TYPE_CODE (func_type) == TYPE_CODE_FUNC); | |
9886 | ||
9887 | /* Enlist this call site to the function. */ | |
9888 | call_site->tail_call_next = TYPE_TAIL_CALL_LIST (func_type); | |
9889 | TYPE_TAIL_CALL_LIST (func_type) = call_site; | |
9890 | } | |
9891 | else | |
9892 | complaint (&symfile_complaints, | |
9893 | _("Cannot find function owning DW_TAG_GNU_call_site " | |
9894 | "DIE 0x%x [in module %s]"), | |
b64f50a1 | 9895 | die->offset.sect_off, objfile->name); |
96408a79 SA |
9896 | } |
9897 | } | |
9898 | ||
9899 | attr = dwarf2_attr (die, DW_AT_GNU_call_site_target, cu); | |
9900 | if (attr == NULL) | |
9901 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
9902 | SET_FIELD_DWARF_BLOCK (call_site->target, NULL); | |
9903 | if (!attr || (attr_form_is_block (attr) && DW_BLOCK (attr)->size == 0)) | |
9904 | /* Keep NULL DWARF_BLOCK. */; | |
9905 | else if (attr_form_is_block (attr)) | |
9906 | { | |
9907 | struct dwarf2_locexpr_baton *dlbaton; | |
9908 | ||
9909 | dlbaton = obstack_alloc (&objfile->objfile_obstack, sizeof (*dlbaton)); | |
9910 | dlbaton->data = DW_BLOCK (attr)->data; | |
9911 | dlbaton->size = DW_BLOCK (attr)->size; | |
9912 | dlbaton->per_cu = cu->per_cu; | |
9913 | ||
9914 | SET_FIELD_DWARF_BLOCK (call_site->target, dlbaton); | |
9915 | } | |
9916 | else if (is_ref_attr (attr)) | |
9917 | { | |
96408a79 SA |
9918 | struct dwarf2_cu *target_cu = cu; |
9919 | struct die_info *target_die; | |
9920 | ||
9921 | target_die = follow_die_ref_or_sig (die, attr, &target_cu); | |
9922 | gdb_assert (target_cu->objfile == objfile); | |
9923 | if (die_is_declaration (target_die, target_cu)) | |
9924 | { | |
9112db09 JK |
9925 | const char *target_physname = NULL; |
9926 | struct attribute *target_attr; | |
9927 | ||
9928 | /* Prefer the mangled name; otherwise compute the demangled one. */ | |
9929 | target_attr = dwarf2_attr (target_die, DW_AT_linkage_name, target_cu); | |
9930 | if (target_attr == NULL) | |
9931 | target_attr = dwarf2_attr (target_die, DW_AT_MIPS_linkage_name, | |
9932 | target_cu); | |
9933 | if (target_attr != NULL && DW_STRING (target_attr) != NULL) | |
9934 | target_physname = DW_STRING (target_attr); | |
9935 | else | |
9936 | target_physname = dwarf2_physname (NULL, target_die, target_cu); | |
96408a79 SA |
9937 | if (target_physname == NULL) |
9938 | complaint (&symfile_complaints, | |
9939 | _("DW_AT_GNU_call_site_target target DIE has invalid " | |
9940 | "physname, for referencing DIE 0x%x [in module %s]"), | |
b64f50a1 | 9941 | die->offset.sect_off, objfile->name); |
96408a79 | 9942 | else |
7d455152 | 9943 | SET_FIELD_PHYSNAME (call_site->target, target_physname); |
96408a79 SA |
9944 | } |
9945 | else | |
9946 | { | |
9947 | CORE_ADDR lowpc; | |
9948 | ||
9949 | /* DW_AT_entry_pc should be preferred. */ | |
9950 | if (!dwarf2_get_pc_bounds (target_die, &lowpc, NULL, target_cu, NULL)) | |
9951 | complaint (&symfile_complaints, | |
9952 | _("DW_AT_GNU_call_site_target target DIE has invalid " | |
9953 | "low pc, for referencing DIE 0x%x [in module %s]"), | |
b64f50a1 | 9954 | die->offset.sect_off, objfile->name); |
96408a79 SA |
9955 | else |
9956 | SET_FIELD_PHYSADDR (call_site->target, lowpc + baseaddr); | |
9957 | } | |
9958 | } | |
9959 | else | |
9960 | complaint (&symfile_complaints, | |
9961 | _("DW_TAG_GNU_call_site DW_AT_GNU_call_site_target is neither " | |
9962 | "block nor reference, for DIE 0x%x [in module %s]"), | |
b64f50a1 | 9963 | die->offset.sect_off, objfile->name); |
96408a79 SA |
9964 | |
9965 | call_site->per_cu = cu->per_cu; | |
9966 | ||
9967 | for (child_die = die->child; | |
9968 | child_die && child_die->tag; | |
9969 | child_die = sibling_die (child_die)) | |
9970 | { | |
96408a79 | 9971 | struct call_site_parameter *parameter; |
1788b2d3 | 9972 | struct attribute *loc, *origin; |
96408a79 SA |
9973 | |
9974 | if (child_die->tag != DW_TAG_GNU_call_site_parameter) | |
9975 | { | |
9976 | /* Already printed the complaint above. */ | |
9977 | continue; | |
9978 | } | |
9979 | ||
9980 | gdb_assert (call_site->parameter_count < nparams); | |
9981 | parameter = &call_site->parameter[call_site->parameter_count]; | |
9982 | ||
1788b2d3 JK |
9983 | /* DW_AT_location specifies the register number or DW_AT_abstract_origin |
9984 | specifies DW_TAG_formal_parameter. Value of the data assumed for the | |
9985 | register is contained in DW_AT_GNU_call_site_value. */ | |
96408a79 | 9986 | |
24c5c679 | 9987 | loc = dwarf2_attr (child_die, DW_AT_location, cu); |
1788b2d3 JK |
9988 | origin = dwarf2_attr (child_die, DW_AT_abstract_origin, cu); |
9989 | if (loc == NULL && origin != NULL && is_ref_attr (origin)) | |
9990 | { | |
9991 | sect_offset offset; | |
9992 | ||
9993 | parameter->kind = CALL_SITE_PARAMETER_PARAM_OFFSET; | |
9994 | offset = dwarf2_get_ref_die_offset (origin); | |
d76b7dbc JK |
9995 | if (!offset_in_cu_p (&cu->header, offset)) |
9996 | { | |
9997 | /* As DW_OP_GNU_parameter_ref uses CU-relative offset this | |
9998 | binding can be done only inside one CU. Such referenced DIE | |
9999 | therefore cannot be even moved to DW_TAG_partial_unit. */ | |
10000 | complaint (&symfile_complaints, | |
10001 | _("DW_AT_abstract_origin offset is not in CU for " | |
10002 | "DW_TAG_GNU_call_site child DIE 0x%x " | |
10003 | "[in module %s]"), | |
10004 | child_die->offset.sect_off, objfile->name); | |
10005 | continue; | |
10006 | } | |
1788b2d3 JK |
10007 | parameter->u.param_offset.cu_off = (offset.sect_off |
10008 | - cu->header.offset.sect_off); | |
10009 | } | |
10010 | else if (loc == NULL || origin != NULL || !attr_form_is_block (loc)) | |
96408a79 SA |
10011 | { |
10012 | complaint (&symfile_complaints, | |
10013 | _("No DW_FORM_block* DW_AT_location for " | |
10014 | "DW_TAG_GNU_call_site child DIE 0x%x [in module %s]"), | |
b64f50a1 | 10015 | child_die->offset.sect_off, objfile->name); |
96408a79 SA |
10016 | continue; |
10017 | } | |
24c5c679 | 10018 | else |
96408a79 | 10019 | { |
24c5c679 JK |
10020 | parameter->u.dwarf_reg = dwarf_block_to_dwarf_reg |
10021 | (DW_BLOCK (loc)->data, &DW_BLOCK (loc)->data[DW_BLOCK (loc)->size]); | |
10022 | if (parameter->u.dwarf_reg != -1) | |
10023 | parameter->kind = CALL_SITE_PARAMETER_DWARF_REG; | |
10024 | else if (dwarf_block_to_sp_offset (gdbarch, DW_BLOCK (loc)->data, | |
10025 | &DW_BLOCK (loc)->data[DW_BLOCK (loc)->size], | |
10026 | ¶meter->u.fb_offset)) | |
10027 | parameter->kind = CALL_SITE_PARAMETER_FB_OFFSET; | |
10028 | else | |
10029 | { | |
10030 | complaint (&symfile_complaints, | |
10031 | _("Only single DW_OP_reg or DW_OP_fbreg is supported " | |
10032 | "for DW_FORM_block* DW_AT_location is supported for " | |
10033 | "DW_TAG_GNU_call_site child DIE 0x%x " | |
10034 | "[in module %s]"), | |
10035 | child_die->offset.sect_off, objfile->name); | |
10036 | continue; | |
10037 | } | |
96408a79 SA |
10038 | } |
10039 | ||
10040 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_value, cu); | |
10041 | if (!attr_form_is_block (attr)) | |
10042 | { | |
10043 | complaint (&symfile_complaints, | |
10044 | _("No DW_FORM_block* DW_AT_GNU_call_site_value for " | |
10045 | "DW_TAG_GNU_call_site child DIE 0x%x [in module %s]"), | |
b64f50a1 | 10046 | child_die->offset.sect_off, objfile->name); |
96408a79 SA |
10047 | continue; |
10048 | } | |
10049 | parameter->value = DW_BLOCK (attr)->data; | |
10050 | parameter->value_size = DW_BLOCK (attr)->size; | |
10051 | ||
10052 | /* Parameters are not pre-cleared by memset above. */ | |
10053 | parameter->data_value = NULL; | |
10054 | parameter->data_value_size = 0; | |
10055 | call_site->parameter_count++; | |
10056 | ||
10057 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_data_value, cu); | |
10058 | if (attr) | |
10059 | { | |
10060 | if (!attr_form_is_block (attr)) | |
10061 | complaint (&symfile_complaints, | |
10062 | _("No DW_FORM_block* DW_AT_GNU_call_site_data_value for " | |
10063 | "DW_TAG_GNU_call_site child DIE 0x%x [in module %s]"), | |
b64f50a1 | 10064 | child_die->offset.sect_off, objfile->name); |
96408a79 SA |
10065 | else |
10066 | { | |
10067 | parameter->data_value = DW_BLOCK (attr)->data; | |
10068 | parameter->data_value_size = DW_BLOCK (attr)->size; | |
10069 | } | |
10070 | } | |
10071 | } | |
10072 | } | |
10073 | ||
43039443 | 10074 | /* Get low and high pc attributes from DW_AT_ranges attribute value OFFSET. |
ff013f42 JK |
10075 | Return 1 if the attributes are present and valid, otherwise, return 0. |
10076 | If RANGES_PST is not NULL we should setup `objfile->psymtabs_addrmap'. */ | |
43039443 JK |
10077 | |
10078 | static int | |
10079 | dwarf2_ranges_read (unsigned offset, CORE_ADDR *low_return, | |
ff013f42 JK |
10080 | CORE_ADDR *high_return, struct dwarf2_cu *cu, |
10081 | struct partial_symtab *ranges_pst) | |
43039443 JK |
10082 | { |
10083 | struct objfile *objfile = cu->objfile; | |
10084 | struct comp_unit_head *cu_header = &cu->header; | |
10085 | bfd *obfd = objfile->obfd; | |
10086 | unsigned int addr_size = cu_header->addr_size; | |
10087 | CORE_ADDR mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
10088 | /* Base address selection entry. */ | |
10089 | CORE_ADDR base; | |
10090 | int found_base; | |
10091 | unsigned int dummy; | |
10092 | gdb_byte *buffer; | |
10093 | CORE_ADDR marker; | |
10094 | int low_set; | |
10095 | CORE_ADDR low = 0; | |
10096 | CORE_ADDR high = 0; | |
ff013f42 | 10097 | CORE_ADDR baseaddr; |
43039443 | 10098 | |
d00adf39 DE |
10099 | found_base = cu->base_known; |
10100 | base = cu->base_address; | |
43039443 | 10101 | |
be391dca | 10102 | dwarf2_read_section (objfile, &dwarf2_per_objfile->ranges); |
dce234bc | 10103 | if (offset >= dwarf2_per_objfile->ranges.size) |
43039443 JK |
10104 | { |
10105 | complaint (&symfile_complaints, | |
10106 | _("Offset %d out of bounds for DW_AT_ranges attribute"), | |
10107 | offset); | |
10108 | return 0; | |
10109 | } | |
dce234bc | 10110 | buffer = dwarf2_per_objfile->ranges.buffer + offset; |
43039443 JK |
10111 | |
10112 | /* Read in the largest possible address. */ | |
10113 | marker = read_address (obfd, buffer, cu, &dummy); | |
10114 | if ((marker & mask) == mask) | |
10115 | { | |
10116 | /* If we found the largest possible address, then | |
10117 | read the base address. */ | |
10118 | base = read_address (obfd, buffer + addr_size, cu, &dummy); | |
10119 | buffer += 2 * addr_size; | |
10120 | offset += 2 * addr_size; | |
10121 | found_base = 1; | |
10122 | } | |
10123 | ||
10124 | low_set = 0; | |
10125 | ||
e7030f15 | 10126 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
ff013f42 | 10127 | |
43039443 JK |
10128 | while (1) |
10129 | { | |
10130 | CORE_ADDR range_beginning, range_end; | |
10131 | ||
10132 | range_beginning = read_address (obfd, buffer, cu, &dummy); | |
10133 | buffer += addr_size; | |
10134 | range_end = read_address (obfd, buffer, cu, &dummy); | |
10135 | buffer += addr_size; | |
10136 | offset += 2 * addr_size; | |
10137 | ||
10138 | /* An end of list marker is a pair of zero addresses. */ | |
10139 | if (range_beginning == 0 && range_end == 0) | |
10140 | /* Found the end of list entry. */ | |
10141 | break; | |
10142 | ||
10143 | /* Each base address selection entry is a pair of 2 values. | |
10144 | The first is the largest possible address, the second is | |
10145 | the base address. Check for a base address here. */ | |
10146 | if ((range_beginning & mask) == mask) | |
10147 | { | |
10148 | /* If we found the largest possible address, then | |
10149 | read the base address. */ | |
10150 | base = read_address (obfd, buffer + addr_size, cu, &dummy); | |
10151 | found_base = 1; | |
10152 | continue; | |
10153 | } | |
10154 | ||
10155 | if (!found_base) | |
10156 | { | |
10157 | /* We have no valid base address for the ranges | |
10158 | data. */ | |
10159 | complaint (&symfile_complaints, | |
10160 | _("Invalid .debug_ranges data (no base address)")); | |
10161 | return 0; | |
10162 | } | |
10163 | ||
9277c30c UW |
10164 | if (range_beginning > range_end) |
10165 | { | |
10166 | /* Inverted range entries are invalid. */ | |
10167 | complaint (&symfile_complaints, | |
10168 | _("Invalid .debug_ranges data (inverted range)")); | |
10169 | return 0; | |
10170 | } | |
10171 | ||
10172 | /* Empty range entries have no effect. */ | |
10173 | if (range_beginning == range_end) | |
10174 | continue; | |
10175 | ||
43039443 JK |
10176 | range_beginning += base; |
10177 | range_end += base; | |
10178 | ||
01093045 DE |
10179 | /* A not-uncommon case of bad debug info. |
10180 | Don't pollute the addrmap with bad data. */ | |
10181 | if (range_beginning + baseaddr == 0 | |
10182 | && !dwarf2_per_objfile->has_section_at_zero) | |
10183 | { | |
10184 | complaint (&symfile_complaints, | |
10185 | _(".debug_ranges entry has start address of zero" | |
10186 | " [in module %s]"), objfile->name); | |
10187 | continue; | |
10188 | } | |
10189 | ||
9277c30c | 10190 | if (ranges_pst != NULL) |
ff013f42 | 10191 | addrmap_set_empty (objfile->psymtabs_addrmap, |
3e43a32a MS |
10192 | range_beginning + baseaddr, |
10193 | range_end - 1 + baseaddr, | |
ff013f42 JK |
10194 | ranges_pst); |
10195 | ||
43039443 JK |
10196 | /* FIXME: This is recording everything as a low-high |
10197 | segment of consecutive addresses. We should have a | |
10198 | data structure for discontiguous block ranges | |
10199 | instead. */ | |
10200 | if (! low_set) | |
10201 | { | |
10202 | low = range_beginning; | |
10203 | high = range_end; | |
10204 | low_set = 1; | |
10205 | } | |
10206 | else | |
10207 | { | |
10208 | if (range_beginning < low) | |
10209 | low = range_beginning; | |
10210 | if (range_end > high) | |
10211 | high = range_end; | |
10212 | } | |
10213 | } | |
10214 | ||
10215 | if (! low_set) | |
10216 | /* If the first entry is an end-of-list marker, the range | |
10217 | describes an empty scope, i.e. no instructions. */ | |
10218 | return 0; | |
10219 | ||
10220 | if (low_return) | |
10221 | *low_return = low; | |
10222 | if (high_return) | |
10223 | *high_return = high; | |
10224 | return 1; | |
10225 | } | |
10226 | ||
af34e669 DJ |
10227 | /* Get low and high pc attributes from a die. Return 1 if the attributes |
10228 | are present and valid, otherwise, return 0. Return -1 if the range is | |
10229 | discontinuous, i.e. derived from DW_AT_ranges information. */ | |
380bca97 | 10230 | |
c906108c | 10231 | static int |
af34e669 | 10232 | dwarf2_get_pc_bounds (struct die_info *die, CORE_ADDR *lowpc, |
d85a05f0 DJ |
10233 | CORE_ADDR *highpc, struct dwarf2_cu *cu, |
10234 | struct partial_symtab *pst) | |
c906108c SS |
10235 | { |
10236 | struct attribute *attr; | |
91da1414 | 10237 | struct attribute *attr_high; |
af34e669 DJ |
10238 | CORE_ADDR low = 0; |
10239 | CORE_ADDR high = 0; | |
10240 | int ret = 0; | |
c906108c | 10241 | |
91da1414 MW |
10242 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
10243 | if (attr_high) | |
af34e669 | 10244 | { |
e142c38c | 10245 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
af34e669 | 10246 | if (attr) |
91da1414 MW |
10247 | { |
10248 | low = DW_ADDR (attr); | |
3019eac3 DE |
10249 | if (attr_high->form == DW_FORM_addr |
10250 | || attr_high->form == DW_FORM_GNU_addr_index) | |
91da1414 MW |
10251 | high = DW_ADDR (attr_high); |
10252 | else | |
10253 | high = low + DW_UNSND (attr_high); | |
10254 | } | |
af34e669 DJ |
10255 | else |
10256 | /* Found high w/o low attribute. */ | |
10257 | return 0; | |
10258 | ||
10259 | /* Found consecutive range of addresses. */ | |
10260 | ret = 1; | |
10261 | } | |
c906108c | 10262 | else |
af34e669 | 10263 | { |
e142c38c | 10264 | attr = dwarf2_attr (die, DW_AT_ranges, cu); |
af34e669 DJ |
10265 | if (attr != NULL) |
10266 | { | |
ab435259 DE |
10267 | /* DW_AT_ranges_base does not apply to DIEs from the DWO skeleton. |
10268 | We take advantage of the fact that DW_AT_ranges does not appear | |
10269 | in DW_TAG_compile_unit of DWO files. */ | |
10270 | int need_ranges_base = die->tag != DW_TAG_compile_unit; | |
10271 | unsigned int ranges_offset = (DW_UNSND (attr) | |
10272 | + (need_ranges_base | |
10273 | ? cu->ranges_base | |
10274 | : 0)); | |
2e3cf129 | 10275 | |
af34e669 | 10276 | /* Value of the DW_AT_ranges attribute is the offset in the |
a604369a | 10277 | .debug_ranges section. */ |
2e3cf129 | 10278 | if (!dwarf2_ranges_read (ranges_offset, &low, &high, cu, pst)) |
af34e669 | 10279 | return 0; |
43039443 | 10280 | /* Found discontinuous range of addresses. */ |
af34e669 DJ |
10281 | ret = -1; |
10282 | } | |
10283 | } | |
c906108c | 10284 | |
9373cf26 JK |
10285 | /* read_partial_die has also the strict LOW < HIGH requirement. */ |
10286 | if (high <= low) | |
c906108c SS |
10287 | return 0; |
10288 | ||
10289 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
10290 | eliminate duplicate copies of functions and vtables and such. | |
10291 | The linker will arbitrarily choose one and discard the others. | |
10292 | The AT_*_pc values for such functions refer to local labels in | |
10293 | these sections. If the section from that file was discarded, the | |
10294 | labels are not in the output, so the relocs get a value of 0. | |
10295 | If this is a discarded function, mark the pc bounds as invalid, | |
10296 | so that GDB will ignore it. */ | |
72dca2f5 | 10297 | if (low == 0 && !dwarf2_per_objfile->has_section_at_zero) |
c906108c SS |
10298 | return 0; |
10299 | ||
10300 | *lowpc = low; | |
96408a79 SA |
10301 | if (highpc) |
10302 | *highpc = high; | |
af34e669 | 10303 | return ret; |
c906108c SS |
10304 | } |
10305 | ||
b084d499 JB |
10306 | /* Assuming that DIE represents a subprogram DIE or a lexical block, get |
10307 | its low and high PC addresses. Do nothing if these addresses could not | |
10308 | be determined. Otherwise, set LOWPC to the low address if it is smaller, | |
10309 | and HIGHPC to the high address if greater than HIGHPC. */ | |
10310 | ||
10311 | static void | |
10312 | dwarf2_get_subprogram_pc_bounds (struct die_info *die, | |
10313 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
10314 | struct dwarf2_cu *cu) | |
10315 | { | |
10316 | CORE_ADDR low, high; | |
10317 | struct die_info *child = die->child; | |
10318 | ||
d85a05f0 | 10319 | if (dwarf2_get_pc_bounds (die, &low, &high, cu, NULL)) |
b084d499 JB |
10320 | { |
10321 | *lowpc = min (*lowpc, low); | |
10322 | *highpc = max (*highpc, high); | |
10323 | } | |
10324 | ||
10325 | /* If the language does not allow nested subprograms (either inside | |
10326 | subprograms or lexical blocks), we're done. */ | |
10327 | if (cu->language != language_ada) | |
10328 | return; | |
6e70227d | 10329 | |
b084d499 JB |
10330 | /* Check all the children of the given DIE. If it contains nested |
10331 | subprograms, then check their pc bounds. Likewise, we need to | |
10332 | check lexical blocks as well, as they may also contain subprogram | |
10333 | definitions. */ | |
10334 | while (child && child->tag) | |
10335 | { | |
10336 | if (child->tag == DW_TAG_subprogram | |
10337 | || child->tag == DW_TAG_lexical_block) | |
10338 | dwarf2_get_subprogram_pc_bounds (child, lowpc, highpc, cu); | |
10339 | child = sibling_die (child); | |
10340 | } | |
10341 | } | |
10342 | ||
fae299cd DC |
10343 | /* Get the low and high pc's represented by the scope DIE, and store |
10344 | them in *LOWPC and *HIGHPC. If the correct values can't be | |
10345 | determined, set *LOWPC to -1 and *HIGHPC to 0. */ | |
10346 | ||
10347 | static void | |
10348 | get_scope_pc_bounds (struct die_info *die, | |
10349 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
10350 | struct dwarf2_cu *cu) | |
10351 | { | |
10352 | CORE_ADDR best_low = (CORE_ADDR) -1; | |
10353 | CORE_ADDR best_high = (CORE_ADDR) 0; | |
10354 | CORE_ADDR current_low, current_high; | |
10355 | ||
d85a05f0 | 10356 | if (dwarf2_get_pc_bounds (die, ¤t_low, ¤t_high, cu, NULL)) |
fae299cd DC |
10357 | { |
10358 | best_low = current_low; | |
10359 | best_high = current_high; | |
10360 | } | |
10361 | else | |
10362 | { | |
10363 | struct die_info *child = die->child; | |
10364 | ||
10365 | while (child && child->tag) | |
10366 | { | |
10367 | switch (child->tag) { | |
10368 | case DW_TAG_subprogram: | |
b084d499 | 10369 | dwarf2_get_subprogram_pc_bounds (child, &best_low, &best_high, cu); |
fae299cd DC |
10370 | break; |
10371 | case DW_TAG_namespace: | |
f55ee35c | 10372 | case DW_TAG_module: |
fae299cd DC |
10373 | /* FIXME: carlton/2004-01-16: Should we do this for |
10374 | DW_TAG_class_type/DW_TAG_structure_type, too? I think | |
10375 | that current GCC's always emit the DIEs corresponding | |
10376 | to definitions of methods of classes as children of a | |
10377 | DW_TAG_compile_unit or DW_TAG_namespace (as opposed to | |
10378 | the DIEs giving the declarations, which could be | |
10379 | anywhere). But I don't see any reason why the | |
10380 | standards says that they have to be there. */ | |
10381 | get_scope_pc_bounds (child, ¤t_low, ¤t_high, cu); | |
10382 | ||
10383 | if (current_low != ((CORE_ADDR) -1)) | |
10384 | { | |
10385 | best_low = min (best_low, current_low); | |
10386 | best_high = max (best_high, current_high); | |
10387 | } | |
10388 | break; | |
10389 | default: | |
0963b4bd | 10390 | /* Ignore. */ |
fae299cd DC |
10391 | break; |
10392 | } | |
10393 | ||
10394 | child = sibling_die (child); | |
10395 | } | |
10396 | } | |
10397 | ||
10398 | *lowpc = best_low; | |
10399 | *highpc = best_high; | |
10400 | } | |
10401 | ||
801e3a5b JB |
10402 | /* Record the address ranges for BLOCK, offset by BASEADDR, as given |
10403 | in DIE. */ | |
380bca97 | 10404 | |
801e3a5b JB |
10405 | static void |
10406 | dwarf2_record_block_ranges (struct die_info *die, struct block *block, | |
10407 | CORE_ADDR baseaddr, struct dwarf2_cu *cu) | |
10408 | { | |
bb5ed363 | 10409 | struct objfile *objfile = cu->objfile; |
801e3a5b | 10410 | struct attribute *attr; |
91da1414 | 10411 | struct attribute *attr_high; |
801e3a5b | 10412 | |
91da1414 MW |
10413 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
10414 | if (attr_high) | |
801e3a5b | 10415 | { |
801e3a5b JB |
10416 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
10417 | if (attr) | |
10418 | { | |
10419 | CORE_ADDR low = DW_ADDR (attr); | |
91da1414 | 10420 | CORE_ADDR high; |
3019eac3 DE |
10421 | if (attr_high->form == DW_FORM_addr |
10422 | || attr_high->form == DW_FORM_GNU_addr_index) | |
91da1414 MW |
10423 | high = DW_ADDR (attr_high); |
10424 | else | |
10425 | high = low + DW_UNSND (attr_high); | |
9a619af0 | 10426 | |
801e3a5b JB |
10427 | record_block_range (block, baseaddr + low, baseaddr + high - 1); |
10428 | } | |
10429 | } | |
10430 | ||
10431 | attr = dwarf2_attr (die, DW_AT_ranges, cu); | |
10432 | if (attr) | |
10433 | { | |
bb5ed363 | 10434 | bfd *obfd = objfile->obfd; |
ab435259 DE |
10435 | /* DW_AT_ranges_base does not apply to DIEs from the DWO skeleton. |
10436 | We take advantage of the fact that DW_AT_ranges does not appear | |
10437 | in DW_TAG_compile_unit of DWO files. */ | |
10438 | int need_ranges_base = die->tag != DW_TAG_compile_unit; | |
801e3a5b JB |
10439 | |
10440 | /* The value of the DW_AT_ranges attribute is the offset of the | |
10441 | address range list in the .debug_ranges section. */ | |
ab435259 DE |
10442 | unsigned long offset = (DW_UNSND (attr) |
10443 | + (need_ranges_base ? cu->ranges_base : 0)); | |
dce234bc | 10444 | gdb_byte *buffer = dwarf2_per_objfile->ranges.buffer + offset; |
801e3a5b JB |
10445 | |
10446 | /* For some target architectures, but not others, the | |
10447 | read_address function sign-extends the addresses it returns. | |
10448 | To recognize base address selection entries, we need a | |
10449 | mask. */ | |
10450 | unsigned int addr_size = cu->header.addr_size; | |
10451 | CORE_ADDR base_select_mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
10452 | ||
10453 | /* The base address, to which the next pair is relative. Note | |
10454 | that this 'base' is a DWARF concept: most entries in a range | |
10455 | list are relative, to reduce the number of relocs against the | |
10456 | debugging information. This is separate from this function's | |
10457 | 'baseaddr' argument, which GDB uses to relocate debugging | |
10458 | information from a shared library based on the address at | |
10459 | which the library was loaded. */ | |
d00adf39 DE |
10460 | CORE_ADDR base = cu->base_address; |
10461 | int base_known = cu->base_known; | |
801e3a5b | 10462 | |
be391dca | 10463 | gdb_assert (dwarf2_per_objfile->ranges.readin); |
dce234bc | 10464 | if (offset >= dwarf2_per_objfile->ranges.size) |
801e3a5b JB |
10465 | { |
10466 | complaint (&symfile_complaints, | |
10467 | _("Offset %lu out of bounds for DW_AT_ranges attribute"), | |
10468 | offset); | |
10469 | return; | |
10470 | } | |
10471 | ||
10472 | for (;;) | |
10473 | { | |
10474 | unsigned int bytes_read; | |
10475 | CORE_ADDR start, end; | |
10476 | ||
10477 | start = read_address (obfd, buffer, cu, &bytes_read); | |
10478 | buffer += bytes_read; | |
10479 | end = read_address (obfd, buffer, cu, &bytes_read); | |
10480 | buffer += bytes_read; | |
10481 | ||
10482 | /* Did we find the end of the range list? */ | |
10483 | if (start == 0 && end == 0) | |
10484 | break; | |
10485 | ||
10486 | /* Did we find a base address selection entry? */ | |
10487 | else if ((start & base_select_mask) == base_select_mask) | |
10488 | { | |
10489 | base = end; | |
10490 | base_known = 1; | |
10491 | } | |
10492 | ||
10493 | /* We found an ordinary address range. */ | |
10494 | else | |
10495 | { | |
10496 | if (!base_known) | |
10497 | { | |
10498 | complaint (&symfile_complaints, | |
3e43a32a MS |
10499 | _("Invalid .debug_ranges data " |
10500 | "(no base address)")); | |
801e3a5b JB |
10501 | return; |
10502 | } | |
10503 | ||
9277c30c UW |
10504 | if (start > end) |
10505 | { | |
10506 | /* Inverted range entries are invalid. */ | |
10507 | complaint (&symfile_complaints, | |
10508 | _("Invalid .debug_ranges data " | |
10509 | "(inverted range)")); | |
10510 | return; | |
10511 | } | |
10512 | ||
10513 | /* Empty range entries have no effect. */ | |
10514 | if (start == end) | |
10515 | continue; | |
10516 | ||
01093045 DE |
10517 | start += base + baseaddr; |
10518 | end += base + baseaddr; | |
10519 | ||
10520 | /* A not-uncommon case of bad debug info. | |
10521 | Don't pollute the addrmap with bad data. */ | |
10522 | if (start == 0 && !dwarf2_per_objfile->has_section_at_zero) | |
10523 | { | |
10524 | complaint (&symfile_complaints, | |
10525 | _(".debug_ranges entry has start address of zero" | |
10526 | " [in module %s]"), objfile->name); | |
10527 | continue; | |
10528 | } | |
10529 | ||
10530 | record_block_range (block, start, end - 1); | |
801e3a5b JB |
10531 | } |
10532 | } | |
10533 | } | |
10534 | } | |
10535 | ||
685b1105 JK |
10536 | /* Check whether the producer field indicates either of GCC < 4.6, or the |
10537 | Intel C/C++ compiler, and cache the result in CU. */ | |
60d5a603 | 10538 | |
685b1105 JK |
10539 | static void |
10540 | check_producer (struct dwarf2_cu *cu) | |
60d5a603 JK |
10541 | { |
10542 | const char *cs; | |
10543 | int major, minor, release; | |
10544 | ||
10545 | if (cu->producer == NULL) | |
10546 | { | |
10547 | /* For unknown compilers expect their behavior is DWARF version | |
10548 | compliant. | |
10549 | ||
10550 | GCC started to support .debug_types sections by -gdwarf-4 since | |
10551 | gcc-4.5.x. As the .debug_types sections are missing DW_AT_producer | |
10552 | for their space efficiency GDB cannot workaround gcc-4.5.x -gdwarf-4 | |
10553 | combination. gcc-4.5.x -gdwarf-4 binaries have DW_AT_accessibility | |
10554 | interpreted incorrectly by GDB now - GCC PR debug/48229. */ | |
60d5a603 | 10555 | } |
685b1105 | 10556 | else if (strncmp (cu->producer, "GNU ", strlen ("GNU ")) == 0) |
60d5a603 | 10557 | { |
685b1105 JK |
10558 | /* Skip any identifier after "GNU " - such as "C++" or "Java". */ |
10559 | ||
ba919b58 TT |
10560 | cs = &cu->producer[strlen ("GNU ")]; |
10561 | while (*cs && !isdigit (*cs)) | |
10562 | cs++; | |
10563 | if (sscanf (cs, "%d.%d.%d", &major, &minor, &release) != 3) | |
10564 | { | |
10565 | /* Not recognized as GCC. */ | |
10566 | } | |
10567 | else | |
1b80a9fa JK |
10568 | { |
10569 | cu->producer_is_gxx_lt_4_6 = major < 4 || (major == 4 && minor < 6); | |
10570 | cu->producer_is_gcc_lt_4_3 = major < 4 || (major == 4 && minor < 3); | |
10571 | } | |
685b1105 JK |
10572 | } |
10573 | else if (strncmp (cu->producer, "Intel(R) C", strlen ("Intel(R) C")) == 0) | |
10574 | cu->producer_is_icc = 1; | |
10575 | else | |
10576 | { | |
10577 | /* For other non-GCC compilers, expect their behavior is DWARF version | |
10578 | compliant. */ | |
60d5a603 JK |
10579 | } |
10580 | ||
ba919b58 | 10581 | cu->checked_producer = 1; |
685b1105 | 10582 | } |
ba919b58 | 10583 | |
685b1105 JK |
10584 | /* Check for GCC PR debug/45124 fix which is not present in any G++ version up |
10585 | to 4.5.any while it is present already in G++ 4.6.0 - the PR has been fixed | |
10586 | during 4.6.0 experimental. */ | |
10587 | ||
10588 | static int | |
10589 | producer_is_gxx_lt_4_6 (struct dwarf2_cu *cu) | |
10590 | { | |
10591 | if (!cu->checked_producer) | |
10592 | check_producer (cu); | |
10593 | ||
10594 | return cu->producer_is_gxx_lt_4_6; | |
60d5a603 JK |
10595 | } |
10596 | ||
10597 | /* Return the default accessibility type if it is not overriden by | |
10598 | DW_AT_accessibility. */ | |
10599 | ||
10600 | static enum dwarf_access_attribute | |
10601 | dwarf2_default_access_attribute (struct die_info *die, struct dwarf2_cu *cu) | |
10602 | { | |
10603 | if (cu->header.version < 3 || producer_is_gxx_lt_4_6 (cu)) | |
10604 | { | |
10605 | /* The default DWARF 2 accessibility for members is public, the default | |
10606 | accessibility for inheritance is private. */ | |
10607 | ||
10608 | if (die->tag != DW_TAG_inheritance) | |
10609 | return DW_ACCESS_public; | |
10610 | else | |
10611 | return DW_ACCESS_private; | |
10612 | } | |
10613 | else | |
10614 | { | |
10615 | /* DWARF 3+ defines the default accessibility a different way. The same | |
10616 | rules apply now for DW_TAG_inheritance as for the members and it only | |
10617 | depends on the container kind. */ | |
10618 | ||
10619 | if (die->parent->tag == DW_TAG_class_type) | |
10620 | return DW_ACCESS_private; | |
10621 | else | |
10622 | return DW_ACCESS_public; | |
10623 | } | |
10624 | } | |
10625 | ||
74ac6d43 TT |
10626 | /* Look for DW_AT_data_member_location. Set *OFFSET to the byte |
10627 | offset. If the attribute was not found return 0, otherwise return | |
10628 | 1. If it was found but could not properly be handled, set *OFFSET | |
10629 | to 0. */ | |
10630 | ||
10631 | static int | |
10632 | handle_data_member_location (struct die_info *die, struct dwarf2_cu *cu, | |
10633 | LONGEST *offset) | |
10634 | { | |
10635 | struct attribute *attr; | |
10636 | ||
10637 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); | |
10638 | if (attr != NULL) | |
10639 | { | |
10640 | *offset = 0; | |
10641 | ||
10642 | /* Note that we do not check for a section offset first here. | |
10643 | This is because DW_AT_data_member_location is new in DWARF 4, | |
10644 | so if we see it, we can assume that a constant form is really | |
10645 | a constant and not a section offset. */ | |
10646 | if (attr_form_is_constant (attr)) | |
10647 | *offset = dwarf2_get_attr_constant_value (attr, 0); | |
10648 | else if (attr_form_is_section_offset (attr)) | |
10649 | dwarf2_complex_location_expr_complaint (); | |
10650 | else if (attr_form_is_block (attr)) | |
10651 | *offset = decode_locdesc (DW_BLOCK (attr), cu); | |
10652 | else | |
10653 | dwarf2_complex_location_expr_complaint (); | |
10654 | ||
10655 | return 1; | |
10656 | } | |
10657 | ||
10658 | return 0; | |
10659 | } | |
10660 | ||
c906108c SS |
10661 | /* Add an aggregate field to the field list. */ |
10662 | ||
10663 | static void | |
107d2387 | 10664 | dwarf2_add_field (struct field_info *fip, struct die_info *die, |
e7c27a73 | 10665 | struct dwarf2_cu *cu) |
6e70227d | 10666 | { |
e7c27a73 | 10667 | struct objfile *objfile = cu->objfile; |
5e2b427d | 10668 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
10669 | struct nextfield *new_field; |
10670 | struct attribute *attr; | |
10671 | struct field *fp; | |
15d034d0 | 10672 | const char *fieldname = ""; |
c906108c SS |
10673 | |
10674 | /* Allocate a new field list entry and link it in. */ | |
10675 | new_field = (struct nextfield *) xmalloc (sizeof (struct nextfield)); | |
b8c9b27d | 10676 | make_cleanup (xfree, new_field); |
c906108c | 10677 | memset (new_field, 0, sizeof (struct nextfield)); |
7d0ccb61 DJ |
10678 | |
10679 | if (die->tag == DW_TAG_inheritance) | |
10680 | { | |
10681 | new_field->next = fip->baseclasses; | |
10682 | fip->baseclasses = new_field; | |
10683 | } | |
10684 | else | |
10685 | { | |
10686 | new_field->next = fip->fields; | |
10687 | fip->fields = new_field; | |
10688 | } | |
c906108c SS |
10689 | fip->nfields++; |
10690 | ||
e142c38c | 10691 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c SS |
10692 | if (attr) |
10693 | new_field->accessibility = DW_UNSND (attr); | |
60d5a603 JK |
10694 | else |
10695 | new_field->accessibility = dwarf2_default_access_attribute (die, cu); | |
c906108c SS |
10696 | if (new_field->accessibility != DW_ACCESS_public) |
10697 | fip->non_public_fields = 1; | |
60d5a603 | 10698 | |
e142c38c | 10699 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); |
c906108c SS |
10700 | if (attr) |
10701 | new_field->virtuality = DW_UNSND (attr); | |
60d5a603 JK |
10702 | else |
10703 | new_field->virtuality = DW_VIRTUALITY_none; | |
c906108c SS |
10704 | |
10705 | fp = &new_field->field; | |
a9a9bd0f | 10706 | |
e142c38c | 10707 | if (die->tag == DW_TAG_member && ! die_is_declaration (die, cu)) |
c906108c | 10708 | { |
74ac6d43 TT |
10709 | LONGEST offset; |
10710 | ||
a9a9bd0f | 10711 | /* Data member other than a C++ static data member. */ |
6e70227d | 10712 | |
c906108c | 10713 | /* Get type of field. */ |
e7c27a73 | 10714 | fp->type = die_type (die, cu); |
c906108c | 10715 | |
d6a843b5 | 10716 | SET_FIELD_BITPOS (*fp, 0); |
01ad7f36 | 10717 | |
c906108c | 10718 | /* Get bit size of field (zero if none). */ |
e142c38c | 10719 | attr = dwarf2_attr (die, DW_AT_bit_size, cu); |
c906108c SS |
10720 | if (attr) |
10721 | { | |
10722 | FIELD_BITSIZE (*fp) = DW_UNSND (attr); | |
10723 | } | |
10724 | else | |
10725 | { | |
10726 | FIELD_BITSIZE (*fp) = 0; | |
10727 | } | |
10728 | ||
10729 | /* Get bit offset of field. */ | |
74ac6d43 TT |
10730 | if (handle_data_member_location (die, cu, &offset)) |
10731 | SET_FIELD_BITPOS (*fp, offset * bits_per_byte); | |
e142c38c | 10732 | attr = dwarf2_attr (die, DW_AT_bit_offset, cu); |
c906108c SS |
10733 | if (attr) |
10734 | { | |
5e2b427d | 10735 | if (gdbarch_bits_big_endian (gdbarch)) |
c906108c SS |
10736 | { |
10737 | /* For big endian bits, the DW_AT_bit_offset gives the | |
c5aa993b JM |
10738 | additional bit offset from the MSB of the containing |
10739 | anonymous object to the MSB of the field. We don't | |
10740 | have to do anything special since we don't need to | |
10741 | know the size of the anonymous object. */ | |
f41f5e61 | 10742 | SET_FIELD_BITPOS (*fp, FIELD_BITPOS (*fp) + DW_UNSND (attr)); |
c906108c SS |
10743 | } |
10744 | else | |
10745 | { | |
10746 | /* For little endian bits, compute the bit offset to the | |
c5aa993b JM |
10747 | MSB of the anonymous object, subtract off the number of |
10748 | bits from the MSB of the field to the MSB of the | |
10749 | object, and then subtract off the number of bits of | |
10750 | the field itself. The result is the bit offset of | |
10751 | the LSB of the field. */ | |
c906108c SS |
10752 | int anonymous_size; |
10753 | int bit_offset = DW_UNSND (attr); | |
10754 | ||
e142c38c | 10755 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
10756 | if (attr) |
10757 | { | |
10758 | /* The size of the anonymous object containing | |
10759 | the bit field is explicit, so use the | |
10760 | indicated size (in bytes). */ | |
10761 | anonymous_size = DW_UNSND (attr); | |
10762 | } | |
10763 | else | |
10764 | { | |
10765 | /* The size of the anonymous object containing | |
10766 | the bit field must be inferred from the type | |
10767 | attribute of the data member containing the | |
10768 | bit field. */ | |
10769 | anonymous_size = TYPE_LENGTH (fp->type); | |
10770 | } | |
f41f5e61 PA |
10771 | SET_FIELD_BITPOS (*fp, |
10772 | (FIELD_BITPOS (*fp) | |
10773 | + anonymous_size * bits_per_byte | |
10774 | - bit_offset - FIELD_BITSIZE (*fp))); | |
c906108c SS |
10775 | } |
10776 | } | |
10777 | ||
10778 | /* Get name of field. */ | |
39cbfefa DJ |
10779 | fieldname = dwarf2_name (die, cu); |
10780 | if (fieldname == NULL) | |
10781 | fieldname = ""; | |
d8151005 DJ |
10782 | |
10783 | /* The name is already allocated along with this objfile, so we don't | |
10784 | need to duplicate it for the type. */ | |
10785 | fp->name = fieldname; | |
c906108c SS |
10786 | |
10787 | /* Change accessibility for artificial fields (e.g. virtual table | |
c5aa993b | 10788 | pointer or virtual base class pointer) to private. */ |
e142c38c | 10789 | if (dwarf2_attr (die, DW_AT_artificial, cu)) |
c906108c | 10790 | { |
d48cc9dd | 10791 | FIELD_ARTIFICIAL (*fp) = 1; |
c906108c SS |
10792 | new_field->accessibility = DW_ACCESS_private; |
10793 | fip->non_public_fields = 1; | |
10794 | } | |
10795 | } | |
a9a9bd0f | 10796 | else if (die->tag == DW_TAG_member || die->tag == DW_TAG_variable) |
c906108c | 10797 | { |
a9a9bd0f DC |
10798 | /* C++ static member. */ |
10799 | ||
10800 | /* NOTE: carlton/2002-11-05: It should be a DW_TAG_member that | |
10801 | is a declaration, but all versions of G++ as of this writing | |
10802 | (so through at least 3.2.1) incorrectly generate | |
10803 | DW_TAG_variable tags. */ | |
6e70227d | 10804 | |
ff355380 | 10805 | const char *physname; |
c906108c | 10806 | |
a9a9bd0f | 10807 | /* Get name of field. */ |
39cbfefa DJ |
10808 | fieldname = dwarf2_name (die, cu); |
10809 | if (fieldname == NULL) | |
c906108c SS |
10810 | return; |
10811 | ||
254e6b9e | 10812 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
3863f96c DE |
10813 | if (attr |
10814 | /* Only create a symbol if this is an external value. | |
10815 | new_symbol checks this and puts the value in the global symbol | |
10816 | table, which we want. If it is not external, new_symbol | |
10817 | will try to put the value in cu->list_in_scope which is wrong. */ | |
10818 | && dwarf2_flag_true_p (die, DW_AT_external, cu)) | |
254e6b9e DE |
10819 | { |
10820 | /* A static const member, not much different than an enum as far as | |
10821 | we're concerned, except that we can support more types. */ | |
10822 | new_symbol (die, NULL, cu); | |
10823 | } | |
10824 | ||
2df3850c | 10825 | /* Get physical name. */ |
ff355380 | 10826 | physname = dwarf2_physname (fieldname, die, cu); |
c906108c | 10827 | |
d8151005 DJ |
10828 | /* The name is already allocated along with this objfile, so we don't |
10829 | need to duplicate it for the type. */ | |
10830 | SET_FIELD_PHYSNAME (*fp, physname ? physname : ""); | |
e7c27a73 | 10831 | FIELD_TYPE (*fp) = die_type (die, cu); |
d8151005 | 10832 | FIELD_NAME (*fp) = fieldname; |
c906108c SS |
10833 | } |
10834 | else if (die->tag == DW_TAG_inheritance) | |
10835 | { | |
74ac6d43 | 10836 | LONGEST offset; |
d4b96c9a | 10837 | |
74ac6d43 TT |
10838 | /* C++ base class field. */ |
10839 | if (handle_data_member_location (die, cu, &offset)) | |
10840 | SET_FIELD_BITPOS (*fp, offset * bits_per_byte); | |
c906108c | 10841 | FIELD_BITSIZE (*fp) = 0; |
e7c27a73 | 10842 | FIELD_TYPE (*fp) = die_type (die, cu); |
c906108c SS |
10843 | FIELD_NAME (*fp) = type_name_no_tag (fp->type); |
10844 | fip->nbaseclasses++; | |
10845 | } | |
10846 | } | |
10847 | ||
98751a41 JK |
10848 | /* Add a typedef defined in the scope of the FIP's class. */ |
10849 | ||
10850 | static void | |
10851 | dwarf2_add_typedef (struct field_info *fip, struct die_info *die, | |
10852 | struct dwarf2_cu *cu) | |
6e70227d | 10853 | { |
98751a41 | 10854 | struct objfile *objfile = cu->objfile; |
98751a41 JK |
10855 | struct typedef_field_list *new_field; |
10856 | struct attribute *attr; | |
10857 | struct typedef_field *fp; | |
10858 | char *fieldname = ""; | |
10859 | ||
10860 | /* Allocate a new field list entry and link it in. */ | |
10861 | new_field = xzalloc (sizeof (*new_field)); | |
10862 | make_cleanup (xfree, new_field); | |
10863 | ||
10864 | gdb_assert (die->tag == DW_TAG_typedef); | |
10865 | ||
10866 | fp = &new_field->field; | |
10867 | ||
10868 | /* Get name of field. */ | |
10869 | fp->name = dwarf2_name (die, cu); | |
10870 | if (fp->name == NULL) | |
10871 | return; | |
10872 | ||
10873 | fp->type = read_type_die (die, cu); | |
10874 | ||
10875 | new_field->next = fip->typedef_field_list; | |
10876 | fip->typedef_field_list = new_field; | |
10877 | fip->typedef_field_list_count++; | |
10878 | } | |
10879 | ||
c906108c SS |
10880 | /* Create the vector of fields, and attach it to the type. */ |
10881 | ||
10882 | static void | |
fba45db2 | 10883 | dwarf2_attach_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 10884 | struct dwarf2_cu *cu) |
c906108c SS |
10885 | { |
10886 | int nfields = fip->nfields; | |
10887 | ||
10888 | /* Record the field count, allocate space for the array of fields, | |
10889 | and create blank accessibility bitfields if necessary. */ | |
10890 | TYPE_NFIELDS (type) = nfields; | |
10891 | TYPE_FIELDS (type) = (struct field *) | |
10892 | TYPE_ALLOC (type, sizeof (struct field) * nfields); | |
10893 | memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nfields); | |
10894 | ||
b4ba55a1 | 10895 | if (fip->non_public_fields && cu->language != language_ada) |
c906108c SS |
10896 | { |
10897 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
10898 | ||
10899 | TYPE_FIELD_PRIVATE_BITS (type) = | |
10900 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
10901 | B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); | |
10902 | ||
10903 | TYPE_FIELD_PROTECTED_BITS (type) = | |
10904 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
10905 | B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); | |
10906 | ||
774b6a14 TT |
10907 | TYPE_FIELD_IGNORE_BITS (type) = |
10908 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
10909 | B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields); | |
c906108c SS |
10910 | } |
10911 | ||
10912 | /* If the type has baseclasses, allocate and clear a bit vector for | |
10913 | TYPE_FIELD_VIRTUAL_BITS. */ | |
b4ba55a1 | 10914 | if (fip->nbaseclasses && cu->language != language_ada) |
c906108c SS |
10915 | { |
10916 | int num_bytes = B_BYTES (fip->nbaseclasses); | |
fe1b8b76 | 10917 | unsigned char *pointer; |
c906108c SS |
10918 | |
10919 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
fe1b8b76 JB |
10920 | pointer = TYPE_ALLOC (type, num_bytes); |
10921 | TYPE_FIELD_VIRTUAL_BITS (type) = pointer; | |
c906108c SS |
10922 | B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), fip->nbaseclasses); |
10923 | TYPE_N_BASECLASSES (type) = fip->nbaseclasses; | |
10924 | } | |
10925 | ||
3e43a32a MS |
10926 | /* Copy the saved-up fields into the field vector. Start from the head of |
10927 | the list, adding to the tail of the field array, so that they end up in | |
10928 | the same order in the array in which they were added to the list. */ | |
c906108c SS |
10929 | while (nfields-- > 0) |
10930 | { | |
7d0ccb61 DJ |
10931 | struct nextfield *fieldp; |
10932 | ||
10933 | if (fip->fields) | |
10934 | { | |
10935 | fieldp = fip->fields; | |
10936 | fip->fields = fieldp->next; | |
10937 | } | |
10938 | else | |
10939 | { | |
10940 | fieldp = fip->baseclasses; | |
10941 | fip->baseclasses = fieldp->next; | |
10942 | } | |
10943 | ||
10944 | TYPE_FIELD (type, nfields) = fieldp->field; | |
10945 | switch (fieldp->accessibility) | |
c906108c | 10946 | { |
c5aa993b | 10947 | case DW_ACCESS_private: |
b4ba55a1 JB |
10948 | if (cu->language != language_ada) |
10949 | SET_TYPE_FIELD_PRIVATE (type, nfields); | |
c5aa993b | 10950 | break; |
c906108c | 10951 | |
c5aa993b | 10952 | case DW_ACCESS_protected: |
b4ba55a1 JB |
10953 | if (cu->language != language_ada) |
10954 | SET_TYPE_FIELD_PROTECTED (type, nfields); | |
c5aa993b | 10955 | break; |
c906108c | 10956 | |
c5aa993b JM |
10957 | case DW_ACCESS_public: |
10958 | break; | |
c906108c | 10959 | |
c5aa993b JM |
10960 | default: |
10961 | /* Unknown accessibility. Complain and treat it as public. */ | |
10962 | { | |
e2e0b3e5 | 10963 | complaint (&symfile_complaints, _("unsupported accessibility %d"), |
7d0ccb61 | 10964 | fieldp->accessibility); |
c5aa993b JM |
10965 | } |
10966 | break; | |
c906108c SS |
10967 | } |
10968 | if (nfields < fip->nbaseclasses) | |
10969 | { | |
7d0ccb61 | 10970 | switch (fieldp->virtuality) |
c906108c | 10971 | { |
c5aa993b JM |
10972 | case DW_VIRTUALITY_virtual: |
10973 | case DW_VIRTUALITY_pure_virtual: | |
b4ba55a1 | 10974 | if (cu->language == language_ada) |
a73c6dcd | 10975 | error (_("unexpected virtuality in component of Ada type")); |
c5aa993b JM |
10976 | SET_TYPE_FIELD_VIRTUAL (type, nfields); |
10977 | break; | |
c906108c SS |
10978 | } |
10979 | } | |
c906108c SS |
10980 | } |
10981 | } | |
10982 | ||
7d27a96d TT |
10983 | /* Return true if this member function is a constructor, false |
10984 | otherwise. */ | |
10985 | ||
10986 | static int | |
10987 | dwarf2_is_constructor (struct die_info *die, struct dwarf2_cu *cu) | |
10988 | { | |
10989 | const char *fieldname; | |
10990 | const char *typename; | |
10991 | int len; | |
10992 | ||
10993 | if (die->parent == NULL) | |
10994 | return 0; | |
10995 | ||
10996 | if (die->parent->tag != DW_TAG_structure_type | |
10997 | && die->parent->tag != DW_TAG_union_type | |
10998 | && die->parent->tag != DW_TAG_class_type) | |
10999 | return 0; | |
11000 | ||
11001 | fieldname = dwarf2_name (die, cu); | |
11002 | typename = dwarf2_name (die->parent, cu); | |
11003 | if (fieldname == NULL || typename == NULL) | |
11004 | return 0; | |
11005 | ||
11006 | len = strlen (fieldname); | |
11007 | return (strncmp (fieldname, typename, len) == 0 | |
11008 | && (typename[len] == '\0' || typename[len] == '<')); | |
11009 | } | |
11010 | ||
c906108c SS |
11011 | /* Add a member function to the proper fieldlist. */ |
11012 | ||
11013 | static void | |
107d2387 | 11014 | dwarf2_add_member_fn (struct field_info *fip, struct die_info *die, |
e7c27a73 | 11015 | struct type *type, struct dwarf2_cu *cu) |
c906108c | 11016 | { |
e7c27a73 | 11017 | struct objfile *objfile = cu->objfile; |
c906108c SS |
11018 | struct attribute *attr; |
11019 | struct fnfieldlist *flp; | |
11020 | int i; | |
11021 | struct fn_field *fnp; | |
15d034d0 | 11022 | const char *fieldname; |
c906108c | 11023 | struct nextfnfield *new_fnfield; |
f792889a | 11024 | struct type *this_type; |
60d5a603 | 11025 | enum dwarf_access_attribute accessibility; |
c906108c | 11026 | |
b4ba55a1 | 11027 | if (cu->language == language_ada) |
a73c6dcd | 11028 | error (_("unexpected member function in Ada type")); |
b4ba55a1 | 11029 | |
2df3850c | 11030 | /* Get name of member function. */ |
39cbfefa DJ |
11031 | fieldname = dwarf2_name (die, cu); |
11032 | if (fieldname == NULL) | |
2df3850c | 11033 | return; |
c906108c | 11034 | |
c906108c SS |
11035 | /* Look up member function name in fieldlist. */ |
11036 | for (i = 0; i < fip->nfnfields; i++) | |
11037 | { | |
27bfe10e | 11038 | if (strcmp (fip->fnfieldlists[i].name, fieldname) == 0) |
c906108c SS |
11039 | break; |
11040 | } | |
11041 | ||
11042 | /* Create new list element if necessary. */ | |
11043 | if (i < fip->nfnfields) | |
11044 | flp = &fip->fnfieldlists[i]; | |
11045 | else | |
11046 | { | |
11047 | if ((fip->nfnfields % DW_FIELD_ALLOC_CHUNK) == 0) | |
11048 | { | |
11049 | fip->fnfieldlists = (struct fnfieldlist *) | |
11050 | xrealloc (fip->fnfieldlists, | |
11051 | (fip->nfnfields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 11052 | * sizeof (struct fnfieldlist)); |
c906108c | 11053 | if (fip->nfnfields == 0) |
c13c43fd | 11054 | make_cleanup (free_current_contents, &fip->fnfieldlists); |
c906108c SS |
11055 | } |
11056 | flp = &fip->fnfieldlists[fip->nfnfields]; | |
11057 | flp->name = fieldname; | |
11058 | flp->length = 0; | |
11059 | flp->head = NULL; | |
3da10d80 | 11060 | i = fip->nfnfields++; |
c906108c SS |
11061 | } |
11062 | ||
11063 | /* Create a new member function field and chain it to the field list | |
0963b4bd | 11064 | entry. */ |
c906108c | 11065 | new_fnfield = (struct nextfnfield *) xmalloc (sizeof (struct nextfnfield)); |
b8c9b27d | 11066 | make_cleanup (xfree, new_fnfield); |
c906108c SS |
11067 | memset (new_fnfield, 0, sizeof (struct nextfnfield)); |
11068 | new_fnfield->next = flp->head; | |
11069 | flp->head = new_fnfield; | |
11070 | flp->length++; | |
11071 | ||
11072 | /* Fill in the member function field info. */ | |
11073 | fnp = &new_fnfield->fnfield; | |
3da10d80 KS |
11074 | |
11075 | /* Delay processing of the physname until later. */ | |
11076 | if (cu->language == language_cplus || cu->language == language_java) | |
11077 | { | |
11078 | add_to_method_list (type, i, flp->length - 1, fieldname, | |
11079 | die, cu); | |
11080 | } | |
11081 | else | |
11082 | { | |
1d06ead6 | 11083 | const char *physname = dwarf2_physname (fieldname, die, cu); |
3da10d80 KS |
11084 | fnp->physname = physname ? physname : ""; |
11085 | } | |
11086 | ||
c906108c | 11087 | fnp->type = alloc_type (objfile); |
f792889a DJ |
11088 | this_type = read_type_die (die, cu); |
11089 | if (this_type && TYPE_CODE (this_type) == TYPE_CODE_FUNC) | |
c906108c | 11090 | { |
f792889a | 11091 | int nparams = TYPE_NFIELDS (this_type); |
c906108c | 11092 | |
f792889a | 11093 | /* TYPE is the domain of this method, and THIS_TYPE is the type |
e26fb1d7 DC |
11094 | of the method itself (TYPE_CODE_METHOD). */ |
11095 | smash_to_method_type (fnp->type, type, | |
f792889a DJ |
11096 | TYPE_TARGET_TYPE (this_type), |
11097 | TYPE_FIELDS (this_type), | |
11098 | TYPE_NFIELDS (this_type), | |
11099 | TYPE_VARARGS (this_type)); | |
c906108c SS |
11100 | |
11101 | /* Handle static member functions. | |
c5aa993b | 11102 | Dwarf2 has no clean way to discern C++ static and non-static |
0963b4bd MS |
11103 | member functions. G++ helps GDB by marking the first |
11104 | parameter for non-static member functions (which is the this | |
11105 | pointer) as artificial. We obtain this information from | |
11106 | read_subroutine_type via TYPE_FIELD_ARTIFICIAL. */ | |
f792889a | 11107 | if (nparams == 0 || TYPE_FIELD_ARTIFICIAL (this_type, 0) == 0) |
c906108c SS |
11108 | fnp->voffset = VOFFSET_STATIC; |
11109 | } | |
11110 | else | |
e2e0b3e5 | 11111 | complaint (&symfile_complaints, _("member function type missing for '%s'"), |
3da10d80 | 11112 | dwarf2_full_name (fieldname, die, cu)); |
c906108c SS |
11113 | |
11114 | /* Get fcontext from DW_AT_containing_type if present. */ | |
e142c38c | 11115 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
e7c27a73 | 11116 | fnp->fcontext = die_containing_type (die, cu); |
c906108c | 11117 | |
3e43a32a MS |
11118 | /* dwarf2 doesn't have stubbed physical names, so the setting of is_const and |
11119 | is_volatile is irrelevant, as it is needed by gdb_mangle_name only. */ | |
c906108c SS |
11120 | |
11121 | /* Get accessibility. */ | |
e142c38c | 11122 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c | 11123 | if (attr) |
60d5a603 JK |
11124 | accessibility = DW_UNSND (attr); |
11125 | else | |
11126 | accessibility = dwarf2_default_access_attribute (die, cu); | |
11127 | switch (accessibility) | |
c906108c | 11128 | { |
60d5a603 JK |
11129 | case DW_ACCESS_private: |
11130 | fnp->is_private = 1; | |
11131 | break; | |
11132 | case DW_ACCESS_protected: | |
11133 | fnp->is_protected = 1; | |
11134 | break; | |
c906108c SS |
11135 | } |
11136 | ||
b02dede2 | 11137 | /* Check for artificial methods. */ |
e142c38c | 11138 | attr = dwarf2_attr (die, DW_AT_artificial, cu); |
b02dede2 DJ |
11139 | if (attr && DW_UNSND (attr) != 0) |
11140 | fnp->is_artificial = 1; | |
11141 | ||
7d27a96d TT |
11142 | fnp->is_constructor = dwarf2_is_constructor (die, cu); |
11143 | ||
0d564a31 | 11144 | /* Get index in virtual function table if it is a virtual member |
aec5aa8b TT |
11145 | function. For older versions of GCC, this is an offset in the |
11146 | appropriate virtual table, as specified by DW_AT_containing_type. | |
11147 | For everyone else, it is an expression to be evaluated relative | |
0d564a31 DJ |
11148 | to the object address. */ |
11149 | ||
e142c38c | 11150 | attr = dwarf2_attr (die, DW_AT_vtable_elem_location, cu); |
aec5aa8b | 11151 | if (attr) |
8e19ed76 | 11152 | { |
aec5aa8b | 11153 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size > 0) |
8e19ed76 | 11154 | { |
aec5aa8b TT |
11155 | if (DW_BLOCK (attr)->data[0] == DW_OP_constu) |
11156 | { | |
11157 | /* Old-style GCC. */ | |
11158 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu) + 2; | |
11159 | } | |
11160 | else if (DW_BLOCK (attr)->data[0] == DW_OP_deref | |
11161 | || (DW_BLOCK (attr)->size > 1 | |
11162 | && DW_BLOCK (attr)->data[0] == DW_OP_deref_size | |
11163 | && DW_BLOCK (attr)->data[1] == cu->header.addr_size)) | |
11164 | { | |
11165 | struct dwarf_block blk; | |
11166 | int offset; | |
11167 | ||
11168 | offset = (DW_BLOCK (attr)->data[0] == DW_OP_deref | |
11169 | ? 1 : 2); | |
11170 | blk.size = DW_BLOCK (attr)->size - offset; | |
11171 | blk.data = DW_BLOCK (attr)->data + offset; | |
11172 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu); | |
11173 | if ((fnp->voffset % cu->header.addr_size) != 0) | |
11174 | dwarf2_complex_location_expr_complaint (); | |
11175 | else | |
11176 | fnp->voffset /= cu->header.addr_size; | |
11177 | fnp->voffset += 2; | |
11178 | } | |
11179 | else | |
11180 | dwarf2_complex_location_expr_complaint (); | |
11181 | ||
11182 | if (!fnp->fcontext) | |
11183 | fnp->fcontext = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (this_type, 0)); | |
11184 | } | |
3690dd37 | 11185 | else if (attr_form_is_section_offset (attr)) |
8e19ed76 | 11186 | { |
4d3c2250 | 11187 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
11188 | } |
11189 | else | |
11190 | { | |
4d3c2250 KB |
11191 | dwarf2_invalid_attrib_class_complaint ("DW_AT_vtable_elem_location", |
11192 | fieldname); | |
8e19ed76 | 11193 | } |
0d564a31 | 11194 | } |
d48cc9dd DJ |
11195 | else |
11196 | { | |
11197 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); | |
11198 | if (attr && DW_UNSND (attr)) | |
11199 | { | |
11200 | /* GCC does this, as of 2008-08-25; PR debug/37237. */ | |
11201 | complaint (&symfile_complaints, | |
3e43a32a MS |
11202 | _("Member function \"%s\" (offset %d) is virtual " |
11203 | "but the vtable offset is not specified"), | |
b64f50a1 | 11204 | fieldname, die->offset.sect_off); |
9655fd1a | 11205 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
d48cc9dd DJ |
11206 | TYPE_CPLUS_DYNAMIC (type) = 1; |
11207 | } | |
11208 | } | |
c906108c SS |
11209 | } |
11210 | ||
11211 | /* Create the vector of member function fields, and attach it to the type. */ | |
11212 | ||
11213 | static void | |
fba45db2 | 11214 | dwarf2_attach_fn_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 11215 | struct dwarf2_cu *cu) |
c906108c SS |
11216 | { |
11217 | struct fnfieldlist *flp; | |
c906108c SS |
11218 | int i; |
11219 | ||
b4ba55a1 | 11220 | if (cu->language == language_ada) |
a73c6dcd | 11221 | error (_("unexpected member functions in Ada type")); |
b4ba55a1 | 11222 | |
c906108c SS |
11223 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
11224 | TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) | |
11225 | TYPE_ALLOC (type, sizeof (struct fn_fieldlist) * fip->nfnfields); | |
11226 | ||
11227 | for (i = 0, flp = fip->fnfieldlists; i < fip->nfnfields; i++, flp++) | |
11228 | { | |
11229 | struct nextfnfield *nfp = flp->head; | |
11230 | struct fn_fieldlist *fn_flp = &TYPE_FN_FIELDLIST (type, i); | |
11231 | int k; | |
11232 | ||
11233 | TYPE_FN_FIELDLIST_NAME (type, i) = flp->name; | |
11234 | TYPE_FN_FIELDLIST_LENGTH (type, i) = flp->length; | |
11235 | fn_flp->fn_fields = (struct fn_field *) | |
11236 | TYPE_ALLOC (type, sizeof (struct fn_field) * flp->length); | |
11237 | for (k = flp->length; (k--, nfp); nfp = nfp->next) | |
c5aa993b | 11238 | fn_flp->fn_fields[k] = nfp->fnfield; |
c906108c SS |
11239 | } |
11240 | ||
11241 | TYPE_NFN_FIELDS (type) = fip->nfnfields; | |
c906108c SS |
11242 | } |
11243 | ||
1168df01 JB |
11244 | /* Returns non-zero if NAME is the name of a vtable member in CU's |
11245 | language, zero otherwise. */ | |
11246 | static int | |
11247 | is_vtable_name (const char *name, struct dwarf2_cu *cu) | |
11248 | { | |
11249 | static const char vptr[] = "_vptr"; | |
987504bb | 11250 | static const char vtable[] = "vtable"; |
1168df01 | 11251 | |
987504bb JJ |
11252 | /* Look for the C++ and Java forms of the vtable. */ |
11253 | if ((cu->language == language_java | |
11254 | && strncmp (name, vtable, sizeof (vtable) - 1) == 0) | |
11255 | || (strncmp (name, vptr, sizeof (vptr) - 1) == 0 | |
11256 | && is_cplus_marker (name[sizeof (vptr) - 1]))) | |
1168df01 JB |
11257 | return 1; |
11258 | ||
11259 | return 0; | |
11260 | } | |
11261 | ||
c0dd20ea | 11262 | /* GCC outputs unnamed structures that are really pointers to member |
0b92b5bb TT |
11263 | functions, with the ABI-specified layout. If TYPE describes |
11264 | such a structure, smash it into a member function type. | |
61049d3b DJ |
11265 | |
11266 | GCC shouldn't do this; it should just output pointer to member DIEs. | |
11267 | This is GCC PR debug/28767. */ | |
c0dd20ea | 11268 | |
0b92b5bb TT |
11269 | static void |
11270 | quirk_gcc_member_function_pointer (struct type *type, struct objfile *objfile) | |
c0dd20ea | 11271 | { |
0b92b5bb | 11272 | struct type *pfn_type, *domain_type, *new_type; |
c0dd20ea DJ |
11273 | |
11274 | /* Check for a structure with no name and two children. */ | |
0b92b5bb TT |
11275 | if (TYPE_CODE (type) != TYPE_CODE_STRUCT || TYPE_NFIELDS (type) != 2) |
11276 | return; | |
c0dd20ea DJ |
11277 | |
11278 | /* Check for __pfn and __delta members. */ | |
0b92b5bb TT |
11279 | if (TYPE_FIELD_NAME (type, 0) == NULL |
11280 | || strcmp (TYPE_FIELD_NAME (type, 0), "__pfn") != 0 | |
11281 | || TYPE_FIELD_NAME (type, 1) == NULL | |
11282 | || strcmp (TYPE_FIELD_NAME (type, 1), "__delta") != 0) | |
11283 | return; | |
c0dd20ea DJ |
11284 | |
11285 | /* Find the type of the method. */ | |
0b92b5bb | 11286 | pfn_type = TYPE_FIELD_TYPE (type, 0); |
c0dd20ea DJ |
11287 | if (pfn_type == NULL |
11288 | || TYPE_CODE (pfn_type) != TYPE_CODE_PTR | |
11289 | || TYPE_CODE (TYPE_TARGET_TYPE (pfn_type)) != TYPE_CODE_FUNC) | |
0b92b5bb | 11290 | return; |
c0dd20ea DJ |
11291 | |
11292 | /* Look for the "this" argument. */ | |
11293 | pfn_type = TYPE_TARGET_TYPE (pfn_type); | |
11294 | if (TYPE_NFIELDS (pfn_type) == 0 | |
0b92b5bb | 11295 | /* || TYPE_FIELD_TYPE (pfn_type, 0) == NULL */ |
c0dd20ea | 11296 | || TYPE_CODE (TYPE_FIELD_TYPE (pfn_type, 0)) != TYPE_CODE_PTR) |
0b92b5bb | 11297 | return; |
c0dd20ea DJ |
11298 | |
11299 | domain_type = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (pfn_type, 0)); | |
0b92b5bb TT |
11300 | new_type = alloc_type (objfile); |
11301 | smash_to_method_type (new_type, domain_type, TYPE_TARGET_TYPE (pfn_type), | |
c0dd20ea DJ |
11302 | TYPE_FIELDS (pfn_type), TYPE_NFIELDS (pfn_type), |
11303 | TYPE_VARARGS (pfn_type)); | |
0b92b5bb | 11304 | smash_to_methodptr_type (type, new_type); |
c0dd20ea | 11305 | } |
1168df01 | 11306 | |
685b1105 JK |
11307 | /* Return non-zero if the CU's PRODUCER string matches the Intel C/C++ compiler |
11308 | (icc). */ | |
11309 | ||
11310 | static int | |
11311 | producer_is_icc (struct dwarf2_cu *cu) | |
11312 | { | |
11313 | if (!cu->checked_producer) | |
11314 | check_producer (cu); | |
11315 | ||
11316 | return cu->producer_is_icc; | |
11317 | } | |
11318 | ||
c906108c | 11319 | /* Called when we find the DIE that starts a structure or union scope |
c767944b DJ |
11320 | (definition) to create a type for the structure or union. Fill in |
11321 | the type's name and general properties; the members will not be | |
11322 | processed until process_structure_type. | |
c906108c | 11323 | |
c767944b DJ |
11324 | NOTE: we need to call these functions regardless of whether or not the |
11325 | DIE has a DW_AT_name attribute, since it might be an anonymous | |
c906108c SS |
11326 | structure or union. This gets the type entered into our set of |
11327 | user defined types. | |
11328 | ||
11329 | However, if the structure is incomplete (an opaque struct/union) | |
11330 | then suppress creating a symbol table entry for it since gdb only | |
11331 | wants to find the one with the complete definition. Note that if | |
11332 | it is complete, we just call new_symbol, which does it's own | |
11333 | checking about whether the struct/union is anonymous or not (and | |
11334 | suppresses creating a symbol table entry itself). */ | |
11335 | ||
f792889a | 11336 | static struct type * |
134d01f1 | 11337 | read_structure_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 11338 | { |
e7c27a73 | 11339 | struct objfile *objfile = cu->objfile; |
c906108c SS |
11340 | struct type *type; |
11341 | struct attribute *attr; | |
15d034d0 | 11342 | const char *name; |
c906108c | 11343 | |
348e048f DE |
11344 | /* If the definition of this type lives in .debug_types, read that type. |
11345 | Don't follow DW_AT_specification though, that will take us back up | |
11346 | the chain and we want to go down. */ | |
45e58e77 | 11347 | attr = dwarf2_attr_no_follow (die, DW_AT_signature); |
348e048f DE |
11348 | if (attr) |
11349 | { | |
11350 | struct dwarf2_cu *type_cu = cu; | |
11351 | struct die_info *type_die = follow_die_ref_or_sig (die, attr, &type_cu); | |
9a619af0 | 11352 | |
348e048f DE |
11353 | /* We could just recurse on read_structure_type, but we need to call |
11354 | get_die_type to ensure only one type for this DIE is created. | |
11355 | This is important, for example, because for c++ classes we need | |
11356 | TYPE_NAME set which is only done by new_symbol. Blech. */ | |
11357 | type = read_type_die (type_die, type_cu); | |
9dc481d3 DE |
11358 | |
11359 | /* TYPE_CU may not be the same as CU. | |
11360 | Ensure TYPE is recorded in CU's type_hash table. */ | |
348e048f DE |
11361 | return set_die_type (die, type, cu); |
11362 | } | |
11363 | ||
c0dd20ea | 11364 | type = alloc_type (objfile); |
c906108c | 11365 | INIT_CPLUS_SPECIFIC (type); |
93311388 | 11366 | |
39cbfefa DJ |
11367 | name = dwarf2_name (die, cu); |
11368 | if (name != NULL) | |
c906108c | 11369 | { |
987504bb JJ |
11370 | if (cu->language == language_cplus |
11371 | || cu->language == language_java) | |
63d06c5c | 11372 | { |
15d034d0 | 11373 | const char *full_name = dwarf2_full_name (name, die, cu); |
3da10d80 KS |
11374 | |
11375 | /* dwarf2_full_name might have already finished building the DIE's | |
11376 | type. If so, there is no need to continue. */ | |
11377 | if (get_die_type (die, cu) != NULL) | |
11378 | return get_die_type (die, cu); | |
11379 | ||
11380 | TYPE_TAG_NAME (type) = full_name; | |
94af9270 KS |
11381 | if (die->tag == DW_TAG_structure_type |
11382 | || die->tag == DW_TAG_class_type) | |
11383 | TYPE_NAME (type) = TYPE_TAG_NAME (type); | |
63d06c5c DC |
11384 | } |
11385 | else | |
11386 | { | |
d8151005 DJ |
11387 | /* The name is already allocated along with this objfile, so |
11388 | we don't need to duplicate it for the type. */ | |
7d455152 | 11389 | TYPE_TAG_NAME (type) = name; |
94af9270 KS |
11390 | if (die->tag == DW_TAG_class_type) |
11391 | TYPE_NAME (type) = TYPE_TAG_NAME (type); | |
63d06c5c | 11392 | } |
c906108c SS |
11393 | } |
11394 | ||
11395 | if (die->tag == DW_TAG_structure_type) | |
11396 | { | |
11397 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
11398 | } | |
11399 | else if (die->tag == DW_TAG_union_type) | |
11400 | { | |
11401 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
11402 | } | |
11403 | else | |
11404 | { | |
c906108c SS |
11405 | TYPE_CODE (type) = TYPE_CODE_CLASS; |
11406 | } | |
11407 | ||
0cc2414c TT |
11408 | if (cu->language == language_cplus && die->tag == DW_TAG_class_type) |
11409 | TYPE_DECLARED_CLASS (type) = 1; | |
11410 | ||
e142c38c | 11411 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
11412 | if (attr) |
11413 | { | |
11414 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
11415 | } | |
11416 | else | |
11417 | { | |
11418 | TYPE_LENGTH (type) = 0; | |
11419 | } | |
11420 | ||
685b1105 JK |
11421 | if (producer_is_icc (cu)) |
11422 | { | |
11423 | /* ICC does not output the required DW_AT_declaration | |
11424 | on incomplete types, but gives them a size of zero. */ | |
11425 | } | |
11426 | else | |
11427 | TYPE_STUB_SUPPORTED (type) = 1; | |
11428 | ||
dc718098 | 11429 | if (die_is_declaration (die, cu)) |
876cecd0 | 11430 | TYPE_STUB (type) = 1; |
a6c727b2 DJ |
11431 | else if (attr == NULL && die->child == NULL |
11432 | && producer_is_realview (cu->producer)) | |
11433 | /* RealView does not output the required DW_AT_declaration | |
11434 | on incomplete types. */ | |
11435 | TYPE_STUB (type) = 1; | |
dc718098 | 11436 | |
c906108c SS |
11437 | /* We need to add the type field to the die immediately so we don't |
11438 | infinitely recurse when dealing with pointers to the structure | |
0963b4bd | 11439 | type within the structure itself. */ |
1c379e20 | 11440 | set_die_type (die, type, cu); |
c906108c | 11441 | |
7e314c57 JK |
11442 | /* set_die_type should be already done. */ |
11443 | set_descriptive_type (type, die, cu); | |
11444 | ||
c767944b DJ |
11445 | return type; |
11446 | } | |
11447 | ||
11448 | /* Finish creating a structure or union type, including filling in | |
11449 | its members and creating a symbol for it. */ | |
11450 | ||
11451 | static void | |
11452 | process_structure_scope (struct die_info *die, struct dwarf2_cu *cu) | |
11453 | { | |
11454 | struct objfile *objfile = cu->objfile; | |
11455 | struct die_info *child_die = die->child; | |
11456 | struct type *type; | |
11457 | ||
11458 | type = get_die_type (die, cu); | |
11459 | if (type == NULL) | |
11460 | type = read_structure_type (die, cu); | |
11461 | ||
e142c38c | 11462 | if (die->child != NULL && ! die_is_declaration (die, cu)) |
c906108c SS |
11463 | { |
11464 | struct field_info fi; | |
11465 | struct die_info *child_die; | |
34eaf542 | 11466 | VEC (symbolp) *template_args = NULL; |
c767944b | 11467 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
c906108c SS |
11468 | |
11469 | memset (&fi, 0, sizeof (struct field_info)); | |
11470 | ||
639d11d3 | 11471 | child_die = die->child; |
c906108c SS |
11472 | |
11473 | while (child_die && child_die->tag) | |
11474 | { | |
a9a9bd0f DC |
11475 | if (child_die->tag == DW_TAG_member |
11476 | || child_die->tag == DW_TAG_variable) | |
c906108c | 11477 | { |
a9a9bd0f DC |
11478 | /* NOTE: carlton/2002-11-05: A C++ static data member |
11479 | should be a DW_TAG_member that is a declaration, but | |
11480 | all versions of G++ as of this writing (so through at | |
11481 | least 3.2.1) incorrectly generate DW_TAG_variable | |
11482 | tags for them instead. */ | |
e7c27a73 | 11483 | dwarf2_add_field (&fi, child_die, cu); |
c906108c | 11484 | } |
8713b1b1 | 11485 | else if (child_die->tag == DW_TAG_subprogram) |
c906108c | 11486 | { |
0963b4bd | 11487 | /* C++ member function. */ |
e7c27a73 | 11488 | dwarf2_add_member_fn (&fi, child_die, type, cu); |
c906108c SS |
11489 | } |
11490 | else if (child_die->tag == DW_TAG_inheritance) | |
11491 | { | |
11492 | /* C++ base class field. */ | |
e7c27a73 | 11493 | dwarf2_add_field (&fi, child_die, cu); |
c906108c | 11494 | } |
98751a41 JK |
11495 | else if (child_die->tag == DW_TAG_typedef) |
11496 | dwarf2_add_typedef (&fi, child_die, cu); | |
34eaf542 TT |
11497 | else if (child_die->tag == DW_TAG_template_type_param |
11498 | || child_die->tag == DW_TAG_template_value_param) | |
11499 | { | |
11500 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
11501 | ||
f1078f66 DJ |
11502 | if (arg != NULL) |
11503 | VEC_safe_push (symbolp, template_args, arg); | |
34eaf542 TT |
11504 | } |
11505 | ||
c906108c SS |
11506 | child_die = sibling_die (child_die); |
11507 | } | |
11508 | ||
34eaf542 TT |
11509 | /* Attach template arguments to type. */ |
11510 | if (! VEC_empty (symbolp, template_args)) | |
11511 | { | |
11512 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
11513 | TYPE_N_TEMPLATE_ARGUMENTS (type) | |
11514 | = VEC_length (symbolp, template_args); | |
11515 | TYPE_TEMPLATE_ARGUMENTS (type) | |
11516 | = obstack_alloc (&objfile->objfile_obstack, | |
11517 | (TYPE_N_TEMPLATE_ARGUMENTS (type) | |
11518 | * sizeof (struct symbol *))); | |
11519 | memcpy (TYPE_TEMPLATE_ARGUMENTS (type), | |
11520 | VEC_address (symbolp, template_args), | |
11521 | (TYPE_N_TEMPLATE_ARGUMENTS (type) | |
11522 | * sizeof (struct symbol *))); | |
11523 | VEC_free (symbolp, template_args); | |
11524 | } | |
11525 | ||
c906108c SS |
11526 | /* Attach fields and member functions to the type. */ |
11527 | if (fi.nfields) | |
e7c27a73 | 11528 | dwarf2_attach_fields_to_type (&fi, type, cu); |
c906108c SS |
11529 | if (fi.nfnfields) |
11530 | { | |
e7c27a73 | 11531 | dwarf2_attach_fn_fields_to_type (&fi, type, cu); |
c906108c | 11532 | |
c5aa993b | 11533 | /* Get the type which refers to the base class (possibly this |
c906108c | 11534 | class itself) which contains the vtable pointer for the current |
0d564a31 DJ |
11535 | class from the DW_AT_containing_type attribute. This use of |
11536 | DW_AT_containing_type is a GNU extension. */ | |
c906108c | 11537 | |
e142c38c | 11538 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
c906108c | 11539 | { |
e7c27a73 | 11540 | struct type *t = die_containing_type (die, cu); |
c906108c SS |
11541 | |
11542 | TYPE_VPTR_BASETYPE (type) = t; | |
11543 | if (type == t) | |
11544 | { | |
c906108c SS |
11545 | int i; |
11546 | ||
11547 | /* Our own class provides vtbl ptr. */ | |
11548 | for (i = TYPE_NFIELDS (t) - 1; | |
11549 | i >= TYPE_N_BASECLASSES (t); | |
11550 | --i) | |
11551 | { | |
0d5cff50 | 11552 | const char *fieldname = TYPE_FIELD_NAME (t, i); |
c906108c | 11553 | |
1168df01 | 11554 | if (is_vtable_name (fieldname, cu)) |
c906108c SS |
11555 | { |
11556 | TYPE_VPTR_FIELDNO (type) = i; | |
11557 | break; | |
11558 | } | |
11559 | } | |
11560 | ||
11561 | /* Complain if virtual function table field not found. */ | |
11562 | if (i < TYPE_N_BASECLASSES (t)) | |
4d3c2250 | 11563 | complaint (&symfile_complaints, |
3e43a32a MS |
11564 | _("virtual function table pointer " |
11565 | "not found when defining class '%s'"), | |
4d3c2250 KB |
11566 | TYPE_TAG_NAME (type) ? TYPE_TAG_NAME (type) : |
11567 | ""); | |
c906108c SS |
11568 | } |
11569 | else | |
11570 | { | |
11571 | TYPE_VPTR_FIELDNO (type) = TYPE_VPTR_FIELDNO (t); | |
11572 | } | |
11573 | } | |
f6235d4c EZ |
11574 | else if (cu->producer |
11575 | && strncmp (cu->producer, | |
11576 | "IBM(R) XL C/C++ Advanced Edition", 32) == 0) | |
11577 | { | |
11578 | /* The IBM XLC compiler does not provide direct indication | |
11579 | of the containing type, but the vtable pointer is | |
11580 | always named __vfp. */ | |
11581 | ||
11582 | int i; | |
11583 | ||
11584 | for (i = TYPE_NFIELDS (type) - 1; | |
11585 | i >= TYPE_N_BASECLASSES (type); | |
11586 | --i) | |
11587 | { | |
11588 | if (strcmp (TYPE_FIELD_NAME (type, i), "__vfp") == 0) | |
11589 | { | |
11590 | TYPE_VPTR_FIELDNO (type) = i; | |
11591 | TYPE_VPTR_BASETYPE (type) = type; | |
11592 | break; | |
11593 | } | |
11594 | } | |
11595 | } | |
c906108c | 11596 | } |
98751a41 JK |
11597 | |
11598 | /* Copy fi.typedef_field_list linked list elements content into the | |
11599 | allocated array TYPE_TYPEDEF_FIELD_ARRAY (type). */ | |
11600 | if (fi.typedef_field_list) | |
11601 | { | |
11602 | int i = fi.typedef_field_list_count; | |
11603 | ||
a0d7a4ff | 11604 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
98751a41 JK |
11605 | TYPE_TYPEDEF_FIELD_ARRAY (type) |
11606 | = TYPE_ALLOC (type, sizeof (TYPE_TYPEDEF_FIELD (type, 0)) * i); | |
11607 | TYPE_TYPEDEF_FIELD_COUNT (type) = i; | |
11608 | ||
11609 | /* Reverse the list order to keep the debug info elements order. */ | |
11610 | while (--i >= 0) | |
11611 | { | |
11612 | struct typedef_field *dest, *src; | |
6e70227d | 11613 | |
98751a41 JK |
11614 | dest = &TYPE_TYPEDEF_FIELD (type, i); |
11615 | src = &fi.typedef_field_list->field; | |
11616 | fi.typedef_field_list = fi.typedef_field_list->next; | |
11617 | *dest = *src; | |
11618 | } | |
11619 | } | |
c767944b DJ |
11620 | |
11621 | do_cleanups (back_to); | |
eb2a6f42 TT |
11622 | |
11623 | if (HAVE_CPLUS_STRUCT (type)) | |
11624 | TYPE_CPLUS_REALLY_JAVA (type) = cu->language == language_java; | |
c906108c | 11625 | } |
63d06c5c | 11626 | |
bb5ed363 | 11627 | quirk_gcc_member_function_pointer (type, objfile); |
0b92b5bb | 11628 | |
90aeadfc DC |
11629 | /* NOTE: carlton/2004-03-16: GCC 3.4 (or at least one of its |
11630 | snapshots) has been known to create a die giving a declaration | |
11631 | for a class that has, as a child, a die giving a definition for a | |
11632 | nested class. So we have to process our children even if the | |
11633 | current die is a declaration. Normally, of course, a declaration | |
11634 | won't have any children at all. */ | |
134d01f1 | 11635 | |
90aeadfc DC |
11636 | while (child_die != NULL && child_die->tag) |
11637 | { | |
11638 | if (child_die->tag == DW_TAG_member | |
11639 | || child_die->tag == DW_TAG_variable | |
34eaf542 TT |
11640 | || child_die->tag == DW_TAG_inheritance |
11641 | || child_die->tag == DW_TAG_template_value_param | |
11642 | || child_die->tag == DW_TAG_template_type_param) | |
134d01f1 | 11643 | { |
90aeadfc | 11644 | /* Do nothing. */ |
134d01f1 | 11645 | } |
90aeadfc DC |
11646 | else |
11647 | process_die (child_die, cu); | |
134d01f1 | 11648 | |
90aeadfc | 11649 | child_die = sibling_die (child_die); |
134d01f1 DJ |
11650 | } |
11651 | ||
fa4028e9 JB |
11652 | /* Do not consider external references. According to the DWARF standard, |
11653 | these DIEs are identified by the fact that they have no byte_size | |
11654 | attribute, and a declaration attribute. */ | |
11655 | if (dwarf2_attr (die, DW_AT_byte_size, cu) != NULL | |
11656 | || !die_is_declaration (die, cu)) | |
c767944b | 11657 | new_symbol (die, type, cu); |
134d01f1 DJ |
11658 | } |
11659 | ||
11660 | /* Given a DW_AT_enumeration_type die, set its type. We do not | |
11661 | complete the type's fields yet, or create any symbols. */ | |
c906108c | 11662 | |
f792889a | 11663 | static struct type * |
134d01f1 | 11664 | read_enumeration_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 11665 | { |
e7c27a73 | 11666 | struct objfile *objfile = cu->objfile; |
c906108c | 11667 | struct type *type; |
c906108c | 11668 | struct attribute *attr; |
0114d602 | 11669 | const char *name; |
134d01f1 | 11670 | |
348e048f DE |
11671 | /* If the definition of this type lives in .debug_types, read that type. |
11672 | Don't follow DW_AT_specification though, that will take us back up | |
11673 | the chain and we want to go down. */ | |
45e58e77 | 11674 | attr = dwarf2_attr_no_follow (die, DW_AT_signature); |
348e048f DE |
11675 | if (attr) |
11676 | { | |
11677 | struct dwarf2_cu *type_cu = cu; | |
11678 | struct die_info *type_die = follow_die_ref_or_sig (die, attr, &type_cu); | |
9a619af0 | 11679 | |
348e048f | 11680 | type = read_type_die (type_die, type_cu); |
9dc481d3 DE |
11681 | |
11682 | /* TYPE_CU may not be the same as CU. | |
11683 | Ensure TYPE is recorded in CU's type_hash table. */ | |
348e048f DE |
11684 | return set_die_type (die, type, cu); |
11685 | } | |
11686 | ||
c906108c SS |
11687 | type = alloc_type (objfile); |
11688 | ||
11689 | TYPE_CODE (type) = TYPE_CODE_ENUM; | |
94af9270 | 11690 | name = dwarf2_full_name (NULL, die, cu); |
39cbfefa | 11691 | if (name != NULL) |
7d455152 | 11692 | TYPE_TAG_NAME (type) = name; |
c906108c | 11693 | |
e142c38c | 11694 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
11695 | if (attr) |
11696 | { | |
11697 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
11698 | } | |
11699 | else | |
11700 | { | |
11701 | TYPE_LENGTH (type) = 0; | |
11702 | } | |
11703 | ||
137033e9 JB |
11704 | /* The enumeration DIE can be incomplete. In Ada, any type can be |
11705 | declared as private in the package spec, and then defined only | |
11706 | inside the package body. Such types are known as Taft Amendment | |
11707 | Types. When another package uses such a type, an incomplete DIE | |
11708 | may be generated by the compiler. */ | |
02eb380e | 11709 | if (die_is_declaration (die, cu)) |
876cecd0 | 11710 | TYPE_STUB (type) = 1; |
02eb380e | 11711 | |
f792889a | 11712 | return set_die_type (die, type, cu); |
134d01f1 DJ |
11713 | } |
11714 | ||
11715 | /* Given a pointer to a die which begins an enumeration, process all | |
11716 | the dies that define the members of the enumeration, and create the | |
11717 | symbol for the enumeration type. | |
11718 | ||
11719 | NOTE: We reverse the order of the element list. */ | |
11720 | ||
11721 | static void | |
11722 | process_enumeration_scope (struct die_info *die, struct dwarf2_cu *cu) | |
11723 | { | |
f792889a | 11724 | struct type *this_type; |
134d01f1 | 11725 | |
f792889a DJ |
11726 | this_type = get_die_type (die, cu); |
11727 | if (this_type == NULL) | |
11728 | this_type = read_enumeration_type (die, cu); | |
9dc481d3 | 11729 | |
639d11d3 | 11730 | if (die->child != NULL) |
c906108c | 11731 | { |
9dc481d3 DE |
11732 | struct die_info *child_die; |
11733 | struct symbol *sym; | |
11734 | struct field *fields = NULL; | |
11735 | int num_fields = 0; | |
11736 | int unsigned_enum = 1; | |
15d034d0 | 11737 | const char *name; |
cafec441 TT |
11738 | int flag_enum = 1; |
11739 | ULONGEST mask = 0; | |
9dc481d3 | 11740 | |
639d11d3 | 11741 | child_die = die->child; |
c906108c SS |
11742 | while (child_die && child_die->tag) |
11743 | { | |
11744 | if (child_die->tag != DW_TAG_enumerator) | |
11745 | { | |
e7c27a73 | 11746 | process_die (child_die, cu); |
c906108c SS |
11747 | } |
11748 | else | |
11749 | { | |
39cbfefa DJ |
11750 | name = dwarf2_name (child_die, cu); |
11751 | if (name) | |
c906108c | 11752 | { |
f792889a | 11753 | sym = new_symbol (child_die, this_type, cu); |
c906108c | 11754 | if (SYMBOL_VALUE (sym) < 0) |
cafec441 TT |
11755 | { |
11756 | unsigned_enum = 0; | |
11757 | flag_enum = 0; | |
11758 | } | |
11759 | else if ((mask & SYMBOL_VALUE (sym)) != 0) | |
11760 | flag_enum = 0; | |
11761 | else | |
11762 | mask |= SYMBOL_VALUE (sym); | |
c906108c SS |
11763 | |
11764 | if ((num_fields % DW_FIELD_ALLOC_CHUNK) == 0) | |
11765 | { | |
11766 | fields = (struct field *) | |
11767 | xrealloc (fields, | |
11768 | (num_fields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 11769 | * sizeof (struct field)); |
c906108c SS |
11770 | } |
11771 | ||
3567439c | 11772 | FIELD_NAME (fields[num_fields]) = SYMBOL_LINKAGE_NAME (sym); |
c906108c | 11773 | FIELD_TYPE (fields[num_fields]) = NULL; |
14e75d8e | 11774 | SET_FIELD_ENUMVAL (fields[num_fields], SYMBOL_VALUE (sym)); |
c906108c SS |
11775 | FIELD_BITSIZE (fields[num_fields]) = 0; |
11776 | ||
11777 | num_fields++; | |
11778 | } | |
11779 | } | |
11780 | ||
11781 | child_die = sibling_die (child_die); | |
11782 | } | |
11783 | ||
11784 | if (num_fields) | |
11785 | { | |
f792889a DJ |
11786 | TYPE_NFIELDS (this_type) = num_fields; |
11787 | TYPE_FIELDS (this_type) = (struct field *) | |
11788 | TYPE_ALLOC (this_type, sizeof (struct field) * num_fields); | |
11789 | memcpy (TYPE_FIELDS (this_type), fields, | |
c906108c | 11790 | sizeof (struct field) * num_fields); |
b8c9b27d | 11791 | xfree (fields); |
c906108c SS |
11792 | } |
11793 | if (unsigned_enum) | |
876cecd0 | 11794 | TYPE_UNSIGNED (this_type) = 1; |
cafec441 TT |
11795 | if (flag_enum) |
11796 | TYPE_FLAG_ENUM (this_type) = 1; | |
c906108c | 11797 | } |
134d01f1 | 11798 | |
6c83ed52 TT |
11799 | /* If we are reading an enum from a .debug_types unit, and the enum |
11800 | is a declaration, and the enum is not the signatured type in the | |
11801 | unit, then we do not want to add a symbol for it. Adding a | |
11802 | symbol would in some cases obscure the true definition of the | |
11803 | enum, giving users an incomplete type when the definition is | |
11804 | actually available. Note that we do not want to do this for all | |
11805 | enums which are just declarations, because C++0x allows forward | |
11806 | enum declarations. */ | |
3019eac3 | 11807 | if (cu->per_cu->is_debug_types |
6c83ed52 TT |
11808 | && die_is_declaration (die, cu)) |
11809 | { | |
52dc124a | 11810 | struct signatured_type *sig_type; |
6c83ed52 | 11811 | |
52dc124a | 11812 | sig_type |
6c83ed52 | 11813 | = lookup_signatured_type_at_offset (dwarf2_per_objfile->objfile, |
8a0459fd | 11814 | cu->per_cu->section, |
6c83ed52 | 11815 | cu->per_cu->offset); |
3019eac3 DE |
11816 | gdb_assert (sig_type->type_offset_in_section.sect_off != 0); |
11817 | if (sig_type->type_offset_in_section.sect_off != die->offset.sect_off) | |
6c83ed52 TT |
11818 | return; |
11819 | } | |
11820 | ||
f792889a | 11821 | new_symbol (die, this_type, cu); |
c906108c SS |
11822 | } |
11823 | ||
11824 | /* Extract all information from a DW_TAG_array_type DIE and put it in | |
11825 | the DIE's type field. For now, this only handles one dimensional | |
11826 | arrays. */ | |
11827 | ||
f792889a | 11828 | static struct type * |
e7c27a73 | 11829 | read_array_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 11830 | { |
e7c27a73 | 11831 | struct objfile *objfile = cu->objfile; |
c906108c | 11832 | struct die_info *child_die; |
7e314c57 | 11833 | struct type *type; |
c906108c SS |
11834 | struct type *element_type, *range_type, *index_type; |
11835 | struct type **range_types = NULL; | |
11836 | struct attribute *attr; | |
11837 | int ndim = 0; | |
11838 | struct cleanup *back_to; | |
15d034d0 | 11839 | const char *name; |
c906108c | 11840 | |
e7c27a73 | 11841 | element_type = die_type (die, cu); |
c906108c | 11842 | |
7e314c57 JK |
11843 | /* The die_type call above may have already set the type for this DIE. */ |
11844 | type = get_die_type (die, cu); | |
11845 | if (type) | |
11846 | return type; | |
11847 | ||
c906108c SS |
11848 | /* Irix 6.2 native cc creates array types without children for |
11849 | arrays with unspecified length. */ | |
639d11d3 | 11850 | if (die->child == NULL) |
c906108c | 11851 | { |
46bf5051 | 11852 | index_type = objfile_type (objfile)->builtin_int; |
c906108c | 11853 | range_type = create_range_type (NULL, index_type, 0, -1); |
f792889a DJ |
11854 | type = create_array_type (NULL, element_type, range_type); |
11855 | return set_die_type (die, type, cu); | |
c906108c SS |
11856 | } |
11857 | ||
11858 | back_to = make_cleanup (null_cleanup, NULL); | |
639d11d3 | 11859 | child_die = die->child; |
c906108c SS |
11860 | while (child_die && child_die->tag) |
11861 | { | |
11862 | if (child_die->tag == DW_TAG_subrange_type) | |
11863 | { | |
f792889a | 11864 | struct type *child_type = read_type_die (child_die, cu); |
9a619af0 | 11865 | |
f792889a | 11866 | if (child_type != NULL) |
a02abb62 | 11867 | { |
0963b4bd MS |
11868 | /* The range type was succesfully read. Save it for the |
11869 | array type creation. */ | |
a02abb62 JB |
11870 | if ((ndim % DW_FIELD_ALLOC_CHUNK) == 0) |
11871 | { | |
11872 | range_types = (struct type **) | |
11873 | xrealloc (range_types, (ndim + DW_FIELD_ALLOC_CHUNK) | |
11874 | * sizeof (struct type *)); | |
11875 | if (ndim == 0) | |
11876 | make_cleanup (free_current_contents, &range_types); | |
11877 | } | |
f792889a | 11878 | range_types[ndim++] = child_type; |
a02abb62 | 11879 | } |
c906108c SS |
11880 | } |
11881 | child_die = sibling_die (child_die); | |
11882 | } | |
11883 | ||
11884 | /* Dwarf2 dimensions are output from left to right, create the | |
11885 | necessary array types in backwards order. */ | |
7ca2d3a3 | 11886 | |
c906108c | 11887 | type = element_type; |
7ca2d3a3 DL |
11888 | |
11889 | if (read_array_order (die, cu) == DW_ORD_col_major) | |
11890 | { | |
11891 | int i = 0; | |
9a619af0 | 11892 | |
7ca2d3a3 DL |
11893 | while (i < ndim) |
11894 | type = create_array_type (NULL, type, range_types[i++]); | |
11895 | } | |
11896 | else | |
11897 | { | |
11898 | while (ndim-- > 0) | |
11899 | type = create_array_type (NULL, type, range_types[ndim]); | |
11900 | } | |
c906108c | 11901 | |
f5f8a009 EZ |
11902 | /* Understand Dwarf2 support for vector types (like they occur on |
11903 | the PowerPC w/ AltiVec). Gcc just adds another attribute to the | |
11904 | array type. This is not part of the Dwarf2/3 standard yet, but a | |
11905 | custom vendor extension. The main difference between a regular | |
11906 | array and the vector variant is that vectors are passed by value | |
11907 | to functions. */ | |
e142c38c | 11908 | attr = dwarf2_attr (die, DW_AT_GNU_vector, cu); |
f5f8a009 | 11909 | if (attr) |
ea37ba09 | 11910 | make_vector_type (type); |
f5f8a009 | 11911 | |
dbc98a8b KW |
11912 | /* The DIE may have DW_AT_byte_size set. For example an OpenCL |
11913 | implementation may choose to implement triple vectors using this | |
11914 | attribute. */ | |
11915 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
11916 | if (attr) | |
11917 | { | |
11918 | if (DW_UNSND (attr) >= TYPE_LENGTH (type)) | |
11919 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
11920 | else | |
3e43a32a MS |
11921 | complaint (&symfile_complaints, |
11922 | _("DW_AT_byte_size for array type smaller " | |
11923 | "than the total size of elements")); | |
dbc98a8b KW |
11924 | } |
11925 | ||
39cbfefa DJ |
11926 | name = dwarf2_name (die, cu); |
11927 | if (name) | |
11928 | TYPE_NAME (type) = name; | |
6e70227d | 11929 | |
0963b4bd | 11930 | /* Install the type in the die. */ |
7e314c57 JK |
11931 | set_die_type (die, type, cu); |
11932 | ||
11933 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
11934 | set_descriptive_type (type, die, cu); |
11935 | ||
c906108c SS |
11936 | do_cleanups (back_to); |
11937 | ||
7e314c57 | 11938 | return type; |
c906108c SS |
11939 | } |
11940 | ||
7ca2d3a3 | 11941 | static enum dwarf_array_dim_ordering |
6e70227d | 11942 | read_array_order (struct die_info *die, struct dwarf2_cu *cu) |
7ca2d3a3 DL |
11943 | { |
11944 | struct attribute *attr; | |
11945 | ||
11946 | attr = dwarf2_attr (die, DW_AT_ordering, cu); | |
11947 | ||
11948 | if (attr) return DW_SND (attr); | |
11949 | ||
0963b4bd MS |
11950 | /* GNU F77 is a special case, as at 08/2004 array type info is the |
11951 | opposite order to the dwarf2 specification, but data is still | |
11952 | laid out as per normal fortran. | |
7ca2d3a3 | 11953 | |
0963b4bd MS |
11954 | FIXME: dsl/2004-8-20: If G77 is ever fixed, this will also need |
11955 | version checking. */ | |
7ca2d3a3 | 11956 | |
905e0470 PM |
11957 | if (cu->language == language_fortran |
11958 | && cu->producer && strstr (cu->producer, "GNU F77")) | |
7ca2d3a3 DL |
11959 | { |
11960 | return DW_ORD_row_major; | |
11961 | } | |
11962 | ||
6e70227d | 11963 | switch (cu->language_defn->la_array_ordering) |
7ca2d3a3 DL |
11964 | { |
11965 | case array_column_major: | |
11966 | return DW_ORD_col_major; | |
11967 | case array_row_major: | |
11968 | default: | |
11969 | return DW_ORD_row_major; | |
11970 | }; | |
11971 | } | |
11972 | ||
72019c9c | 11973 | /* Extract all information from a DW_TAG_set_type DIE and put it in |
0963b4bd | 11974 | the DIE's type field. */ |
72019c9c | 11975 | |
f792889a | 11976 | static struct type * |
72019c9c GM |
11977 | read_set_type (struct die_info *die, struct dwarf2_cu *cu) |
11978 | { | |
7e314c57 JK |
11979 | struct type *domain_type, *set_type; |
11980 | struct attribute *attr; | |
f792889a | 11981 | |
7e314c57 JK |
11982 | domain_type = die_type (die, cu); |
11983 | ||
11984 | /* The die_type call above may have already set the type for this DIE. */ | |
11985 | set_type = get_die_type (die, cu); | |
11986 | if (set_type) | |
11987 | return set_type; | |
11988 | ||
11989 | set_type = create_set_type (NULL, domain_type); | |
11990 | ||
11991 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
d09039dd PM |
11992 | if (attr) |
11993 | TYPE_LENGTH (set_type) = DW_UNSND (attr); | |
7e314c57 | 11994 | |
f792889a | 11995 | return set_die_type (die, set_type, cu); |
72019c9c | 11996 | } |
7ca2d3a3 | 11997 | |
0971de02 TT |
11998 | /* A helper for read_common_block that creates a locexpr baton. |
11999 | SYM is the symbol which we are marking as computed. | |
12000 | COMMON_DIE is the DIE for the common block. | |
12001 | COMMON_LOC is the location expression attribute for the common | |
12002 | block itself. | |
12003 | MEMBER_LOC is the location expression attribute for the particular | |
12004 | member of the common block that we are processing. | |
12005 | CU is the CU from which the above come. */ | |
12006 | ||
12007 | static void | |
12008 | mark_common_block_symbol_computed (struct symbol *sym, | |
12009 | struct die_info *common_die, | |
12010 | struct attribute *common_loc, | |
12011 | struct attribute *member_loc, | |
12012 | struct dwarf2_cu *cu) | |
12013 | { | |
12014 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
12015 | struct dwarf2_locexpr_baton *baton; | |
12016 | gdb_byte *ptr; | |
12017 | unsigned int cu_off; | |
12018 | enum bfd_endian byte_order = gdbarch_byte_order (get_objfile_arch (objfile)); | |
12019 | LONGEST offset = 0; | |
12020 | ||
12021 | gdb_assert (common_loc && member_loc); | |
12022 | gdb_assert (attr_form_is_block (common_loc)); | |
12023 | gdb_assert (attr_form_is_block (member_loc) | |
12024 | || attr_form_is_constant (member_loc)); | |
12025 | ||
12026 | baton = obstack_alloc (&objfile->objfile_obstack, | |
12027 | sizeof (struct dwarf2_locexpr_baton)); | |
12028 | baton->per_cu = cu->per_cu; | |
12029 | gdb_assert (baton->per_cu); | |
12030 | ||
12031 | baton->size = 5 /* DW_OP_call4 */ + 1 /* DW_OP_plus */; | |
12032 | ||
12033 | if (attr_form_is_constant (member_loc)) | |
12034 | { | |
12035 | offset = dwarf2_get_attr_constant_value (member_loc, 0); | |
12036 | baton->size += 1 /* DW_OP_addr */ + cu->header.addr_size; | |
12037 | } | |
12038 | else | |
12039 | baton->size += DW_BLOCK (member_loc)->size; | |
12040 | ||
12041 | ptr = obstack_alloc (&objfile->objfile_obstack, baton->size); | |
12042 | baton->data = ptr; | |
12043 | ||
12044 | *ptr++ = DW_OP_call4; | |
12045 | cu_off = common_die->offset.sect_off - cu->per_cu->offset.sect_off; | |
12046 | store_unsigned_integer (ptr, 4, byte_order, cu_off); | |
12047 | ptr += 4; | |
12048 | ||
12049 | if (attr_form_is_constant (member_loc)) | |
12050 | { | |
12051 | *ptr++ = DW_OP_addr; | |
12052 | store_unsigned_integer (ptr, cu->header.addr_size, byte_order, offset); | |
12053 | ptr += cu->header.addr_size; | |
12054 | } | |
12055 | else | |
12056 | { | |
12057 | /* We have to copy the data here, because DW_OP_call4 will only | |
12058 | use a DW_AT_location attribute. */ | |
12059 | memcpy (ptr, DW_BLOCK (member_loc)->data, DW_BLOCK (member_loc)->size); | |
12060 | ptr += DW_BLOCK (member_loc)->size; | |
12061 | } | |
12062 | ||
12063 | *ptr++ = DW_OP_plus; | |
12064 | gdb_assert (ptr - baton->data == baton->size); | |
12065 | ||
0971de02 | 12066 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 12067 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
0971de02 TT |
12068 | } |
12069 | ||
4357ac6c TT |
12070 | /* Create appropriate locally-scoped variables for all the |
12071 | DW_TAG_common_block entries. Also create a struct common_block | |
12072 | listing all such variables for `info common'. COMMON_BLOCK_DOMAIN | |
12073 | is used to sepate the common blocks name namespace from regular | |
12074 | variable names. */ | |
c906108c SS |
12075 | |
12076 | static void | |
e7c27a73 | 12077 | read_common_block (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 12078 | { |
0971de02 TT |
12079 | struct attribute *attr; |
12080 | ||
12081 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
12082 | if (attr) | |
12083 | { | |
12084 | /* Support the .debug_loc offsets. */ | |
12085 | if (attr_form_is_block (attr)) | |
12086 | { | |
12087 | /* Ok. */ | |
12088 | } | |
12089 | else if (attr_form_is_section_offset (attr)) | |
12090 | { | |
12091 | dwarf2_complex_location_expr_complaint (); | |
12092 | attr = NULL; | |
12093 | } | |
12094 | else | |
12095 | { | |
12096 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", | |
12097 | "common block member"); | |
12098 | attr = NULL; | |
12099 | } | |
12100 | } | |
12101 | ||
639d11d3 | 12102 | if (die->child != NULL) |
c906108c | 12103 | { |
4357ac6c TT |
12104 | struct objfile *objfile = cu->objfile; |
12105 | struct die_info *child_die; | |
12106 | size_t n_entries = 0, size; | |
12107 | struct common_block *common_block; | |
12108 | struct symbol *sym; | |
74ac6d43 | 12109 | |
4357ac6c TT |
12110 | for (child_die = die->child; |
12111 | child_die && child_die->tag; | |
12112 | child_die = sibling_die (child_die)) | |
12113 | ++n_entries; | |
12114 | ||
12115 | size = (sizeof (struct common_block) | |
12116 | + (n_entries - 1) * sizeof (struct symbol *)); | |
12117 | common_block = obstack_alloc (&objfile->objfile_obstack, size); | |
12118 | memset (common_block->contents, 0, n_entries * sizeof (struct symbol *)); | |
12119 | common_block->n_entries = 0; | |
12120 | ||
12121 | for (child_die = die->child; | |
12122 | child_die && child_die->tag; | |
12123 | child_die = sibling_die (child_die)) | |
12124 | { | |
12125 | /* Create the symbol in the DW_TAG_common_block block in the current | |
12126 | symbol scope. */ | |
e7c27a73 | 12127 | sym = new_symbol (child_die, NULL, cu); |
0971de02 TT |
12128 | if (sym != NULL) |
12129 | { | |
12130 | struct attribute *member_loc; | |
12131 | ||
12132 | common_block->contents[common_block->n_entries++] = sym; | |
12133 | ||
12134 | member_loc = dwarf2_attr (child_die, DW_AT_data_member_location, | |
12135 | cu); | |
12136 | if (member_loc) | |
12137 | { | |
12138 | /* GDB has handled this for a long time, but it is | |
12139 | not specified by DWARF. It seems to have been | |
12140 | emitted by gfortran at least as recently as: | |
12141 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23057. */ | |
12142 | complaint (&symfile_complaints, | |
12143 | _("Variable in common block has " | |
12144 | "DW_AT_data_member_location " | |
12145 | "- DIE at 0x%x [in module %s]"), | |
12146 | child_die->offset.sect_off, cu->objfile->name); | |
12147 | ||
12148 | if (attr_form_is_section_offset (member_loc)) | |
12149 | dwarf2_complex_location_expr_complaint (); | |
12150 | else if (attr_form_is_constant (member_loc) | |
12151 | || attr_form_is_block (member_loc)) | |
12152 | { | |
12153 | if (attr) | |
12154 | mark_common_block_symbol_computed (sym, die, attr, | |
12155 | member_loc, cu); | |
12156 | } | |
12157 | else | |
12158 | dwarf2_complex_location_expr_complaint (); | |
12159 | } | |
12160 | } | |
c906108c | 12161 | } |
4357ac6c TT |
12162 | |
12163 | sym = new_symbol (die, objfile_type (objfile)->builtin_void, cu); | |
12164 | SYMBOL_VALUE_COMMON_BLOCK (sym) = common_block; | |
c906108c SS |
12165 | } |
12166 | } | |
12167 | ||
0114d602 | 12168 | /* Create a type for a C++ namespace. */ |
d9fa45fe | 12169 | |
0114d602 DJ |
12170 | static struct type * |
12171 | read_namespace_type (struct die_info *die, struct dwarf2_cu *cu) | |
d9fa45fe | 12172 | { |
e7c27a73 | 12173 | struct objfile *objfile = cu->objfile; |
0114d602 | 12174 | const char *previous_prefix, *name; |
9219021c | 12175 | int is_anonymous; |
0114d602 DJ |
12176 | struct type *type; |
12177 | ||
12178 | /* For extensions, reuse the type of the original namespace. */ | |
12179 | if (dwarf2_attr (die, DW_AT_extension, cu) != NULL) | |
12180 | { | |
12181 | struct die_info *ext_die; | |
12182 | struct dwarf2_cu *ext_cu = cu; | |
9a619af0 | 12183 | |
0114d602 DJ |
12184 | ext_die = dwarf2_extension (die, &ext_cu); |
12185 | type = read_type_die (ext_die, ext_cu); | |
9dc481d3 DE |
12186 | |
12187 | /* EXT_CU may not be the same as CU. | |
12188 | Ensure TYPE is recorded in CU's type_hash table. */ | |
0114d602 DJ |
12189 | return set_die_type (die, type, cu); |
12190 | } | |
9219021c | 12191 | |
e142c38c | 12192 | name = namespace_name (die, &is_anonymous, cu); |
9219021c DC |
12193 | |
12194 | /* Now build the name of the current namespace. */ | |
12195 | ||
0114d602 DJ |
12196 | previous_prefix = determine_prefix (die, cu); |
12197 | if (previous_prefix[0] != '\0') | |
12198 | name = typename_concat (&objfile->objfile_obstack, | |
f55ee35c | 12199 | previous_prefix, name, 0, cu); |
0114d602 DJ |
12200 | |
12201 | /* Create the type. */ | |
12202 | type = init_type (TYPE_CODE_NAMESPACE, 0, 0, NULL, | |
12203 | objfile); | |
abee88f2 | 12204 | TYPE_NAME (type) = name; |
0114d602 DJ |
12205 | TYPE_TAG_NAME (type) = TYPE_NAME (type); |
12206 | ||
60531b24 | 12207 | return set_die_type (die, type, cu); |
0114d602 DJ |
12208 | } |
12209 | ||
12210 | /* Read a C++ namespace. */ | |
12211 | ||
12212 | static void | |
12213 | read_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
12214 | { | |
12215 | struct objfile *objfile = cu->objfile; | |
0114d602 | 12216 | int is_anonymous; |
9219021c | 12217 | |
5c4e30ca DC |
12218 | /* Add a symbol associated to this if we haven't seen the namespace |
12219 | before. Also, add a using directive if it's an anonymous | |
12220 | namespace. */ | |
9219021c | 12221 | |
f2f0e013 | 12222 | if (dwarf2_attr (die, DW_AT_extension, cu) == NULL) |
5c4e30ca DC |
12223 | { |
12224 | struct type *type; | |
12225 | ||
0114d602 | 12226 | type = read_type_die (die, cu); |
e7c27a73 | 12227 | new_symbol (die, type, cu); |
5c4e30ca | 12228 | |
e8e80198 | 12229 | namespace_name (die, &is_anonymous, cu); |
5c4e30ca | 12230 | if (is_anonymous) |
0114d602 DJ |
12231 | { |
12232 | const char *previous_prefix = determine_prefix (die, cu); | |
9a619af0 | 12233 | |
c0cc3a76 | 12234 | cp_add_using_directive (previous_prefix, TYPE_NAME (type), NULL, |
12aaed36 | 12235 | NULL, NULL, 0, &objfile->objfile_obstack); |
0114d602 | 12236 | } |
5c4e30ca | 12237 | } |
9219021c | 12238 | |
639d11d3 | 12239 | if (die->child != NULL) |
d9fa45fe | 12240 | { |
639d11d3 | 12241 | struct die_info *child_die = die->child; |
6e70227d | 12242 | |
d9fa45fe DC |
12243 | while (child_die && child_die->tag) |
12244 | { | |
e7c27a73 | 12245 | process_die (child_die, cu); |
d9fa45fe DC |
12246 | child_die = sibling_die (child_die); |
12247 | } | |
12248 | } | |
38d518c9 EZ |
12249 | } |
12250 | ||
f55ee35c JK |
12251 | /* Read a Fortran module as type. This DIE can be only a declaration used for |
12252 | imported module. Still we need that type as local Fortran "use ... only" | |
12253 | declaration imports depend on the created type in determine_prefix. */ | |
12254 | ||
12255 | static struct type * | |
12256 | read_module_type (struct die_info *die, struct dwarf2_cu *cu) | |
12257 | { | |
12258 | struct objfile *objfile = cu->objfile; | |
15d034d0 | 12259 | const char *module_name; |
f55ee35c JK |
12260 | struct type *type; |
12261 | ||
12262 | module_name = dwarf2_name (die, cu); | |
12263 | if (!module_name) | |
3e43a32a MS |
12264 | complaint (&symfile_complaints, |
12265 | _("DW_TAG_module has no name, offset 0x%x"), | |
b64f50a1 | 12266 | die->offset.sect_off); |
f55ee35c JK |
12267 | type = init_type (TYPE_CODE_MODULE, 0, 0, module_name, objfile); |
12268 | ||
12269 | /* determine_prefix uses TYPE_TAG_NAME. */ | |
12270 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
12271 | ||
12272 | return set_die_type (die, type, cu); | |
12273 | } | |
12274 | ||
5d7cb8df JK |
12275 | /* Read a Fortran module. */ |
12276 | ||
12277 | static void | |
12278 | read_module (struct die_info *die, struct dwarf2_cu *cu) | |
12279 | { | |
12280 | struct die_info *child_die = die->child; | |
12281 | ||
5d7cb8df JK |
12282 | while (child_die && child_die->tag) |
12283 | { | |
12284 | process_die (child_die, cu); | |
12285 | child_die = sibling_die (child_die); | |
12286 | } | |
12287 | } | |
12288 | ||
38d518c9 EZ |
12289 | /* Return the name of the namespace represented by DIE. Set |
12290 | *IS_ANONYMOUS to tell whether or not the namespace is an anonymous | |
12291 | namespace. */ | |
12292 | ||
12293 | static const char * | |
e142c38c | 12294 | namespace_name (struct die_info *die, int *is_anonymous, struct dwarf2_cu *cu) |
38d518c9 EZ |
12295 | { |
12296 | struct die_info *current_die; | |
12297 | const char *name = NULL; | |
12298 | ||
12299 | /* Loop through the extensions until we find a name. */ | |
12300 | ||
12301 | for (current_die = die; | |
12302 | current_die != NULL; | |
f2f0e013 | 12303 | current_die = dwarf2_extension (die, &cu)) |
38d518c9 | 12304 | { |
e142c38c | 12305 | name = dwarf2_name (current_die, cu); |
38d518c9 EZ |
12306 | if (name != NULL) |
12307 | break; | |
12308 | } | |
12309 | ||
12310 | /* Is it an anonymous namespace? */ | |
12311 | ||
12312 | *is_anonymous = (name == NULL); | |
12313 | if (*is_anonymous) | |
2b1dbab0 | 12314 | name = CP_ANONYMOUS_NAMESPACE_STR; |
38d518c9 EZ |
12315 | |
12316 | return name; | |
d9fa45fe DC |
12317 | } |
12318 | ||
c906108c SS |
12319 | /* Extract all information from a DW_TAG_pointer_type DIE and add to |
12320 | the user defined type vector. */ | |
12321 | ||
f792889a | 12322 | static struct type * |
e7c27a73 | 12323 | read_tag_pointer_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 12324 | { |
5e2b427d | 12325 | struct gdbarch *gdbarch = get_objfile_arch (cu->objfile); |
e7c27a73 | 12326 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 12327 | struct type *type; |
8b2dbe47 KB |
12328 | struct attribute *attr_byte_size; |
12329 | struct attribute *attr_address_class; | |
12330 | int byte_size, addr_class; | |
7e314c57 JK |
12331 | struct type *target_type; |
12332 | ||
12333 | target_type = die_type (die, cu); | |
c906108c | 12334 | |
7e314c57 JK |
12335 | /* The die_type call above may have already set the type for this DIE. */ |
12336 | type = get_die_type (die, cu); | |
12337 | if (type) | |
12338 | return type; | |
12339 | ||
12340 | type = lookup_pointer_type (target_type); | |
8b2dbe47 | 12341 | |
e142c38c | 12342 | attr_byte_size = dwarf2_attr (die, DW_AT_byte_size, cu); |
8b2dbe47 KB |
12343 | if (attr_byte_size) |
12344 | byte_size = DW_UNSND (attr_byte_size); | |
c906108c | 12345 | else |
8b2dbe47 KB |
12346 | byte_size = cu_header->addr_size; |
12347 | ||
e142c38c | 12348 | attr_address_class = dwarf2_attr (die, DW_AT_address_class, cu); |
8b2dbe47 KB |
12349 | if (attr_address_class) |
12350 | addr_class = DW_UNSND (attr_address_class); | |
12351 | else | |
12352 | addr_class = DW_ADDR_none; | |
12353 | ||
12354 | /* If the pointer size or address class is different than the | |
12355 | default, create a type variant marked as such and set the | |
12356 | length accordingly. */ | |
12357 | if (TYPE_LENGTH (type) != byte_size || addr_class != DW_ADDR_none) | |
c906108c | 12358 | { |
5e2b427d | 12359 | if (gdbarch_address_class_type_flags_p (gdbarch)) |
8b2dbe47 KB |
12360 | { |
12361 | int type_flags; | |
12362 | ||
849957d9 | 12363 | type_flags = gdbarch_address_class_type_flags |
5e2b427d | 12364 | (gdbarch, byte_size, addr_class); |
876cecd0 TT |
12365 | gdb_assert ((type_flags & ~TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL) |
12366 | == 0); | |
8b2dbe47 KB |
12367 | type = make_type_with_address_space (type, type_flags); |
12368 | } | |
12369 | else if (TYPE_LENGTH (type) != byte_size) | |
12370 | { | |
3e43a32a MS |
12371 | complaint (&symfile_complaints, |
12372 | _("invalid pointer size %d"), byte_size); | |
8b2dbe47 | 12373 | } |
6e70227d | 12374 | else |
9a619af0 MS |
12375 | { |
12376 | /* Should we also complain about unhandled address classes? */ | |
12377 | } | |
c906108c | 12378 | } |
8b2dbe47 KB |
12379 | |
12380 | TYPE_LENGTH (type) = byte_size; | |
f792889a | 12381 | return set_die_type (die, type, cu); |
c906108c SS |
12382 | } |
12383 | ||
12384 | /* Extract all information from a DW_TAG_ptr_to_member_type DIE and add to | |
12385 | the user defined type vector. */ | |
12386 | ||
f792889a | 12387 | static struct type * |
e7c27a73 | 12388 | read_tag_ptr_to_member_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
12389 | { |
12390 | struct type *type; | |
12391 | struct type *to_type; | |
12392 | struct type *domain; | |
12393 | ||
e7c27a73 DJ |
12394 | to_type = die_type (die, cu); |
12395 | domain = die_containing_type (die, cu); | |
0d5de010 | 12396 | |
7e314c57 JK |
12397 | /* The calls above may have already set the type for this DIE. */ |
12398 | type = get_die_type (die, cu); | |
12399 | if (type) | |
12400 | return type; | |
12401 | ||
0d5de010 DJ |
12402 | if (TYPE_CODE (check_typedef (to_type)) == TYPE_CODE_METHOD) |
12403 | type = lookup_methodptr_type (to_type); | |
7078baeb TT |
12404 | else if (TYPE_CODE (check_typedef (to_type)) == TYPE_CODE_FUNC) |
12405 | { | |
12406 | struct type *new_type = alloc_type (cu->objfile); | |
12407 | ||
12408 | smash_to_method_type (new_type, domain, TYPE_TARGET_TYPE (to_type), | |
12409 | TYPE_FIELDS (to_type), TYPE_NFIELDS (to_type), | |
12410 | TYPE_VARARGS (to_type)); | |
12411 | type = lookup_methodptr_type (new_type); | |
12412 | } | |
0d5de010 DJ |
12413 | else |
12414 | type = lookup_memberptr_type (to_type, domain); | |
c906108c | 12415 | |
f792889a | 12416 | return set_die_type (die, type, cu); |
c906108c SS |
12417 | } |
12418 | ||
12419 | /* Extract all information from a DW_TAG_reference_type DIE and add to | |
12420 | the user defined type vector. */ | |
12421 | ||
f792889a | 12422 | static struct type * |
e7c27a73 | 12423 | read_tag_reference_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 12424 | { |
e7c27a73 | 12425 | struct comp_unit_head *cu_header = &cu->header; |
7e314c57 | 12426 | struct type *type, *target_type; |
c906108c SS |
12427 | struct attribute *attr; |
12428 | ||
7e314c57 JK |
12429 | target_type = die_type (die, cu); |
12430 | ||
12431 | /* The die_type call above may have already set the type for this DIE. */ | |
12432 | type = get_die_type (die, cu); | |
12433 | if (type) | |
12434 | return type; | |
12435 | ||
12436 | type = lookup_reference_type (target_type); | |
e142c38c | 12437 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
12438 | if (attr) |
12439 | { | |
12440 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
12441 | } | |
12442 | else | |
12443 | { | |
107d2387 | 12444 | TYPE_LENGTH (type) = cu_header->addr_size; |
c906108c | 12445 | } |
f792889a | 12446 | return set_die_type (die, type, cu); |
c906108c SS |
12447 | } |
12448 | ||
f792889a | 12449 | static struct type * |
e7c27a73 | 12450 | read_tag_const_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 12451 | { |
f792889a | 12452 | struct type *base_type, *cv_type; |
c906108c | 12453 | |
e7c27a73 | 12454 | base_type = die_type (die, cu); |
7e314c57 JK |
12455 | |
12456 | /* The die_type call above may have already set the type for this DIE. */ | |
12457 | cv_type = get_die_type (die, cu); | |
12458 | if (cv_type) | |
12459 | return cv_type; | |
12460 | ||
2f608a3a KW |
12461 | /* In case the const qualifier is applied to an array type, the element type |
12462 | is so qualified, not the array type (section 6.7.3 of C99). */ | |
12463 | if (TYPE_CODE (base_type) == TYPE_CODE_ARRAY) | |
12464 | { | |
12465 | struct type *el_type, *inner_array; | |
12466 | ||
12467 | base_type = copy_type (base_type); | |
12468 | inner_array = base_type; | |
12469 | ||
12470 | while (TYPE_CODE (TYPE_TARGET_TYPE (inner_array)) == TYPE_CODE_ARRAY) | |
12471 | { | |
12472 | TYPE_TARGET_TYPE (inner_array) = | |
12473 | copy_type (TYPE_TARGET_TYPE (inner_array)); | |
12474 | inner_array = TYPE_TARGET_TYPE (inner_array); | |
12475 | } | |
12476 | ||
12477 | el_type = TYPE_TARGET_TYPE (inner_array); | |
12478 | TYPE_TARGET_TYPE (inner_array) = | |
12479 | make_cv_type (1, TYPE_VOLATILE (el_type), el_type, NULL); | |
12480 | ||
12481 | return set_die_type (die, base_type, cu); | |
12482 | } | |
12483 | ||
f792889a DJ |
12484 | cv_type = make_cv_type (1, TYPE_VOLATILE (base_type), base_type, 0); |
12485 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
12486 | } |
12487 | ||
f792889a | 12488 | static struct type * |
e7c27a73 | 12489 | read_tag_volatile_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 12490 | { |
f792889a | 12491 | struct type *base_type, *cv_type; |
c906108c | 12492 | |
e7c27a73 | 12493 | base_type = die_type (die, cu); |
7e314c57 JK |
12494 | |
12495 | /* The die_type call above may have already set the type for this DIE. */ | |
12496 | cv_type = get_die_type (die, cu); | |
12497 | if (cv_type) | |
12498 | return cv_type; | |
12499 | ||
f792889a DJ |
12500 | cv_type = make_cv_type (TYPE_CONST (base_type), 1, base_type, 0); |
12501 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
12502 | } |
12503 | ||
06d66ee9 TT |
12504 | /* Handle DW_TAG_restrict_type. */ |
12505 | ||
12506 | static struct type * | |
12507 | read_tag_restrict_type (struct die_info *die, struct dwarf2_cu *cu) | |
12508 | { | |
12509 | struct type *base_type, *cv_type; | |
12510 | ||
12511 | base_type = die_type (die, cu); | |
12512 | ||
12513 | /* The die_type call above may have already set the type for this DIE. */ | |
12514 | cv_type = get_die_type (die, cu); | |
12515 | if (cv_type) | |
12516 | return cv_type; | |
12517 | ||
12518 | cv_type = make_restrict_type (base_type); | |
12519 | return set_die_type (die, cv_type, cu); | |
12520 | } | |
12521 | ||
c906108c SS |
12522 | /* Extract all information from a DW_TAG_string_type DIE and add to |
12523 | the user defined type vector. It isn't really a user defined type, | |
12524 | but it behaves like one, with other DIE's using an AT_user_def_type | |
12525 | attribute to reference it. */ | |
12526 | ||
f792889a | 12527 | static struct type * |
e7c27a73 | 12528 | read_tag_string_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 12529 | { |
e7c27a73 | 12530 | struct objfile *objfile = cu->objfile; |
3b7538c0 | 12531 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
12532 | struct type *type, *range_type, *index_type, *char_type; |
12533 | struct attribute *attr; | |
12534 | unsigned int length; | |
12535 | ||
e142c38c | 12536 | attr = dwarf2_attr (die, DW_AT_string_length, cu); |
c906108c SS |
12537 | if (attr) |
12538 | { | |
12539 | length = DW_UNSND (attr); | |
12540 | } | |
12541 | else | |
12542 | { | |
0963b4bd | 12543 | /* Check for the DW_AT_byte_size attribute. */ |
e142c38c | 12544 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
b21b22e0 PS |
12545 | if (attr) |
12546 | { | |
12547 | length = DW_UNSND (attr); | |
12548 | } | |
12549 | else | |
12550 | { | |
12551 | length = 1; | |
12552 | } | |
c906108c | 12553 | } |
6ccb9162 | 12554 | |
46bf5051 | 12555 | index_type = objfile_type (objfile)->builtin_int; |
c906108c | 12556 | range_type = create_range_type (NULL, index_type, 1, length); |
3b7538c0 UW |
12557 | char_type = language_string_char_type (cu->language_defn, gdbarch); |
12558 | type = create_string_type (NULL, char_type, range_type); | |
6ccb9162 | 12559 | |
f792889a | 12560 | return set_die_type (die, type, cu); |
c906108c SS |
12561 | } |
12562 | ||
12563 | /* Handle DIES due to C code like: | |
12564 | ||
12565 | struct foo | |
c5aa993b JM |
12566 | { |
12567 | int (*funcp)(int a, long l); | |
12568 | int b; | |
12569 | }; | |
c906108c | 12570 | |
0963b4bd | 12571 | ('funcp' generates a DW_TAG_subroutine_type DIE). */ |
c906108c | 12572 | |
f792889a | 12573 | static struct type * |
e7c27a73 | 12574 | read_subroutine_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 12575 | { |
bb5ed363 | 12576 | struct objfile *objfile = cu->objfile; |
0963b4bd MS |
12577 | struct type *type; /* Type that this function returns. */ |
12578 | struct type *ftype; /* Function that returns above type. */ | |
c906108c SS |
12579 | struct attribute *attr; |
12580 | ||
e7c27a73 | 12581 | type = die_type (die, cu); |
7e314c57 JK |
12582 | |
12583 | /* The die_type call above may have already set the type for this DIE. */ | |
12584 | ftype = get_die_type (die, cu); | |
12585 | if (ftype) | |
12586 | return ftype; | |
12587 | ||
0c8b41f1 | 12588 | ftype = lookup_function_type (type); |
c906108c | 12589 | |
5b8101ae | 12590 | /* All functions in C++, Pascal and Java have prototypes. */ |
e142c38c | 12591 | attr = dwarf2_attr (die, DW_AT_prototyped, cu); |
c906108c | 12592 | if ((attr && (DW_UNSND (attr) != 0)) |
987504bb | 12593 | || cu->language == language_cplus |
5b8101ae PM |
12594 | || cu->language == language_java |
12595 | || cu->language == language_pascal) | |
876cecd0 | 12596 | TYPE_PROTOTYPED (ftype) = 1; |
a6c727b2 DJ |
12597 | else if (producer_is_realview (cu->producer)) |
12598 | /* RealView does not emit DW_AT_prototyped. We can not | |
12599 | distinguish prototyped and unprototyped functions; default to | |
12600 | prototyped, since that is more common in modern code (and | |
12601 | RealView warns about unprototyped functions). */ | |
12602 | TYPE_PROTOTYPED (ftype) = 1; | |
c906108c | 12603 | |
c055b101 CV |
12604 | /* Store the calling convention in the type if it's available in |
12605 | the subroutine die. Otherwise set the calling convention to | |
12606 | the default value DW_CC_normal. */ | |
12607 | attr = dwarf2_attr (die, DW_AT_calling_convention, cu); | |
54fcddd0 UW |
12608 | if (attr) |
12609 | TYPE_CALLING_CONVENTION (ftype) = DW_UNSND (attr); | |
12610 | else if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL")) | |
12611 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_GDB_IBM_OpenCL; | |
12612 | else | |
12613 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_normal; | |
76c10ea2 GM |
12614 | |
12615 | /* We need to add the subroutine type to the die immediately so | |
12616 | we don't infinitely recurse when dealing with parameters | |
0963b4bd | 12617 | declared as the same subroutine type. */ |
76c10ea2 | 12618 | set_die_type (die, ftype, cu); |
6e70227d | 12619 | |
639d11d3 | 12620 | if (die->child != NULL) |
c906108c | 12621 | { |
bb5ed363 | 12622 | struct type *void_type = objfile_type (objfile)->builtin_void; |
c906108c | 12623 | struct die_info *child_die; |
8072405b | 12624 | int nparams, iparams; |
c906108c SS |
12625 | |
12626 | /* Count the number of parameters. | |
12627 | FIXME: GDB currently ignores vararg functions, but knows about | |
12628 | vararg member functions. */ | |
8072405b | 12629 | nparams = 0; |
639d11d3 | 12630 | child_die = die->child; |
c906108c SS |
12631 | while (child_die && child_die->tag) |
12632 | { | |
12633 | if (child_die->tag == DW_TAG_formal_parameter) | |
12634 | nparams++; | |
12635 | else if (child_die->tag == DW_TAG_unspecified_parameters) | |
876cecd0 | 12636 | TYPE_VARARGS (ftype) = 1; |
c906108c SS |
12637 | child_die = sibling_die (child_die); |
12638 | } | |
12639 | ||
12640 | /* Allocate storage for parameters and fill them in. */ | |
12641 | TYPE_NFIELDS (ftype) = nparams; | |
12642 | TYPE_FIELDS (ftype) = (struct field *) | |
ae5a43e0 | 12643 | TYPE_ZALLOC (ftype, nparams * sizeof (struct field)); |
c906108c | 12644 | |
8072405b JK |
12645 | /* TYPE_FIELD_TYPE must never be NULL. Pre-fill the array to ensure it |
12646 | even if we error out during the parameters reading below. */ | |
12647 | for (iparams = 0; iparams < nparams; iparams++) | |
12648 | TYPE_FIELD_TYPE (ftype, iparams) = void_type; | |
12649 | ||
12650 | iparams = 0; | |
639d11d3 | 12651 | child_die = die->child; |
c906108c SS |
12652 | while (child_die && child_die->tag) |
12653 | { | |
12654 | if (child_die->tag == DW_TAG_formal_parameter) | |
12655 | { | |
3ce3b1ba PA |
12656 | struct type *arg_type; |
12657 | ||
12658 | /* DWARF version 2 has no clean way to discern C++ | |
12659 | static and non-static member functions. G++ helps | |
12660 | GDB by marking the first parameter for non-static | |
12661 | member functions (which is the this pointer) as | |
12662 | artificial. We pass this information to | |
12663 | dwarf2_add_member_fn via TYPE_FIELD_ARTIFICIAL. | |
12664 | ||
12665 | DWARF version 3 added DW_AT_object_pointer, which GCC | |
12666 | 4.5 does not yet generate. */ | |
e142c38c | 12667 | attr = dwarf2_attr (child_die, DW_AT_artificial, cu); |
c906108c SS |
12668 | if (attr) |
12669 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = DW_UNSND (attr); | |
12670 | else | |
418835cc KS |
12671 | { |
12672 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; | |
12673 | ||
12674 | /* GCC/43521: In java, the formal parameter | |
12675 | "this" is sometimes not marked with DW_AT_artificial. */ | |
12676 | if (cu->language == language_java) | |
12677 | { | |
12678 | const char *name = dwarf2_name (child_die, cu); | |
9a619af0 | 12679 | |
418835cc KS |
12680 | if (name && !strcmp (name, "this")) |
12681 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 1; | |
12682 | } | |
12683 | } | |
3ce3b1ba PA |
12684 | arg_type = die_type (child_die, cu); |
12685 | ||
12686 | /* RealView does not mark THIS as const, which the testsuite | |
12687 | expects. GCC marks THIS as const in method definitions, | |
12688 | but not in the class specifications (GCC PR 43053). */ | |
12689 | if (cu->language == language_cplus && !TYPE_CONST (arg_type) | |
12690 | && TYPE_FIELD_ARTIFICIAL (ftype, iparams)) | |
12691 | { | |
12692 | int is_this = 0; | |
12693 | struct dwarf2_cu *arg_cu = cu; | |
12694 | const char *name = dwarf2_name (child_die, cu); | |
12695 | ||
12696 | attr = dwarf2_attr (die, DW_AT_object_pointer, cu); | |
12697 | if (attr) | |
12698 | { | |
12699 | /* If the compiler emits this, use it. */ | |
12700 | if (follow_die_ref (die, attr, &arg_cu) == child_die) | |
12701 | is_this = 1; | |
12702 | } | |
12703 | else if (name && strcmp (name, "this") == 0) | |
12704 | /* Function definitions will have the argument names. */ | |
12705 | is_this = 1; | |
12706 | else if (name == NULL && iparams == 0) | |
12707 | /* Declarations may not have the names, so like | |
12708 | elsewhere in GDB, assume an artificial first | |
12709 | argument is "this". */ | |
12710 | is_this = 1; | |
12711 | ||
12712 | if (is_this) | |
12713 | arg_type = make_cv_type (1, TYPE_VOLATILE (arg_type), | |
12714 | arg_type, 0); | |
12715 | } | |
12716 | ||
12717 | TYPE_FIELD_TYPE (ftype, iparams) = arg_type; | |
c906108c SS |
12718 | iparams++; |
12719 | } | |
12720 | child_die = sibling_die (child_die); | |
12721 | } | |
12722 | } | |
12723 | ||
76c10ea2 | 12724 | return ftype; |
c906108c SS |
12725 | } |
12726 | ||
f792889a | 12727 | static struct type * |
e7c27a73 | 12728 | read_typedef (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 12729 | { |
e7c27a73 | 12730 | struct objfile *objfile = cu->objfile; |
0114d602 | 12731 | const char *name = NULL; |
3c8e0968 | 12732 | struct type *this_type, *target_type; |
c906108c | 12733 | |
94af9270 | 12734 | name = dwarf2_full_name (NULL, die, cu); |
f792889a | 12735 | this_type = init_type (TYPE_CODE_TYPEDEF, 0, |
0114d602 | 12736 | TYPE_FLAG_TARGET_STUB, NULL, objfile); |
abee88f2 | 12737 | TYPE_NAME (this_type) = name; |
f792889a | 12738 | set_die_type (die, this_type, cu); |
3c8e0968 DE |
12739 | target_type = die_type (die, cu); |
12740 | if (target_type != this_type) | |
12741 | TYPE_TARGET_TYPE (this_type) = target_type; | |
12742 | else | |
12743 | { | |
12744 | /* Self-referential typedefs are, it seems, not allowed by the DWARF | |
12745 | spec and cause infinite loops in GDB. */ | |
12746 | complaint (&symfile_complaints, | |
12747 | _("Self-referential DW_TAG_typedef " | |
12748 | "- DIE at 0x%x [in module %s]"), | |
b64f50a1 | 12749 | die->offset.sect_off, objfile->name); |
3c8e0968 DE |
12750 | TYPE_TARGET_TYPE (this_type) = NULL; |
12751 | } | |
f792889a | 12752 | return this_type; |
c906108c SS |
12753 | } |
12754 | ||
12755 | /* Find a representation of a given base type and install | |
12756 | it in the TYPE field of the die. */ | |
12757 | ||
f792889a | 12758 | static struct type * |
e7c27a73 | 12759 | read_base_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 12760 | { |
e7c27a73 | 12761 | struct objfile *objfile = cu->objfile; |
c906108c SS |
12762 | struct type *type; |
12763 | struct attribute *attr; | |
12764 | int encoding = 0, size = 0; | |
15d034d0 | 12765 | const char *name; |
6ccb9162 UW |
12766 | enum type_code code = TYPE_CODE_INT; |
12767 | int type_flags = 0; | |
12768 | struct type *target_type = NULL; | |
c906108c | 12769 | |
e142c38c | 12770 | attr = dwarf2_attr (die, DW_AT_encoding, cu); |
c906108c SS |
12771 | if (attr) |
12772 | { | |
12773 | encoding = DW_UNSND (attr); | |
12774 | } | |
e142c38c | 12775 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
12776 | if (attr) |
12777 | { | |
12778 | size = DW_UNSND (attr); | |
12779 | } | |
39cbfefa | 12780 | name = dwarf2_name (die, cu); |
6ccb9162 | 12781 | if (!name) |
c906108c | 12782 | { |
6ccb9162 UW |
12783 | complaint (&symfile_complaints, |
12784 | _("DW_AT_name missing from DW_TAG_base_type")); | |
c906108c | 12785 | } |
6ccb9162 UW |
12786 | |
12787 | switch (encoding) | |
c906108c | 12788 | { |
6ccb9162 UW |
12789 | case DW_ATE_address: |
12790 | /* Turn DW_ATE_address into a void * pointer. */ | |
12791 | code = TYPE_CODE_PTR; | |
12792 | type_flags |= TYPE_FLAG_UNSIGNED; | |
12793 | target_type = init_type (TYPE_CODE_VOID, 1, 0, NULL, objfile); | |
12794 | break; | |
12795 | case DW_ATE_boolean: | |
12796 | code = TYPE_CODE_BOOL; | |
12797 | type_flags |= TYPE_FLAG_UNSIGNED; | |
12798 | break; | |
12799 | case DW_ATE_complex_float: | |
12800 | code = TYPE_CODE_COMPLEX; | |
12801 | target_type = init_type (TYPE_CODE_FLT, size / 2, 0, NULL, objfile); | |
12802 | break; | |
12803 | case DW_ATE_decimal_float: | |
12804 | code = TYPE_CODE_DECFLOAT; | |
12805 | break; | |
12806 | case DW_ATE_float: | |
12807 | code = TYPE_CODE_FLT; | |
12808 | break; | |
12809 | case DW_ATE_signed: | |
12810 | break; | |
12811 | case DW_ATE_unsigned: | |
12812 | type_flags |= TYPE_FLAG_UNSIGNED; | |
3b2b8fea TT |
12813 | if (cu->language == language_fortran |
12814 | && name | |
12815 | && strncmp (name, "character(", sizeof ("character(") - 1) == 0) | |
12816 | code = TYPE_CODE_CHAR; | |
6ccb9162 UW |
12817 | break; |
12818 | case DW_ATE_signed_char: | |
6e70227d | 12819 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea TT |
12820 | || cu->language == language_pascal |
12821 | || cu->language == language_fortran) | |
6ccb9162 UW |
12822 | code = TYPE_CODE_CHAR; |
12823 | break; | |
12824 | case DW_ATE_unsigned_char: | |
868a0084 | 12825 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea TT |
12826 | || cu->language == language_pascal |
12827 | || cu->language == language_fortran) | |
6ccb9162 UW |
12828 | code = TYPE_CODE_CHAR; |
12829 | type_flags |= TYPE_FLAG_UNSIGNED; | |
12830 | break; | |
75079b2b TT |
12831 | case DW_ATE_UTF: |
12832 | /* We just treat this as an integer and then recognize the | |
12833 | type by name elsewhere. */ | |
12834 | break; | |
12835 | ||
6ccb9162 UW |
12836 | default: |
12837 | complaint (&symfile_complaints, _("unsupported DW_AT_encoding: '%s'"), | |
12838 | dwarf_type_encoding_name (encoding)); | |
12839 | break; | |
c906108c | 12840 | } |
6ccb9162 | 12841 | |
0114d602 DJ |
12842 | type = init_type (code, size, type_flags, NULL, objfile); |
12843 | TYPE_NAME (type) = name; | |
6ccb9162 UW |
12844 | TYPE_TARGET_TYPE (type) = target_type; |
12845 | ||
0114d602 | 12846 | if (name && strcmp (name, "char") == 0) |
876cecd0 | 12847 | TYPE_NOSIGN (type) = 1; |
0114d602 | 12848 | |
f792889a | 12849 | return set_die_type (die, type, cu); |
c906108c SS |
12850 | } |
12851 | ||
a02abb62 JB |
12852 | /* Read the given DW_AT_subrange DIE. */ |
12853 | ||
f792889a | 12854 | static struct type * |
a02abb62 JB |
12855 | read_subrange_type (struct die_info *die, struct dwarf2_cu *cu) |
12856 | { | |
4c9ad8c2 | 12857 | struct type *base_type, *orig_base_type; |
a02abb62 JB |
12858 | struct type *range_type; |
12859 | struct attribute *attr; | |
4fae6e18 JK |
12860 | LONGEST low, high; |
12861 | int low_default_is_valid; | |
15d034d0 | 12862 | const char *name; |
43bbcdc2 | 12863 | LONGEST negative_mask; |
e77813c8 | 12864 | |
4c9ad8c2 TT |
12865 | orig_base_type = die_type (die, cu); |
12866 | /* If ORIG_BASE_TYPE is a typedef, it will not be TYPE_UNSIGNED, | |
12867 | whereas the real type might be. So, we use ORIG_BASE_TYPE when | |
12868 | creating the range type, but we use the result of check_typedef | |
12869 | when examining properties of the type. */ | |
12870 | base_type = check_typedef (orig_base_type); | |
a02abb62 | 12871 | |
7e314c57 JK |
12872 | /* The die_type call above may have already set the type for this DIE. */ |
12873 | range_type = get_die_type (die, cu); | |
12874 | if (range_type) | |
12875 | return range_type; | |
12876 | ||
4fae6e18 JK |
12877 | /* Set LOW_DEFAULT_IS_VALID if current language and DWARF version allow |
12878 | omitting DW_AT_lower_bound. */ | |
12879 | switch (cu->language) | |
6e70227d | 12880 | { |
4fae6e18 JK |
12881 | case language_c: |
12882 | case language_cplus: | |
12883 | low = 0; | |
12884 | low_default_is_valid = 1; | |
12885 | break; | |
12886 | case language_fortran: | |
12887 | low = 1; | |
12888 | low_default_is_valid = 1; | |
12889 | break; | |
12890 | case language_d: | |
12891 | case language_java: | |
12892 | case language_objc: | |
12893 | low = 0; | |
12894 | low_default_is_valid = (cu->header.version >= 4); | |
12895 | break; | |
12896 | case language_ada: | |
12897 | case language_m2: | |
12898 | case language_pascal: | |
a02abb62 | 12899 | low = 1; |
4fae6e18 JK |
12900 | low_default_is_valid = (cu->header.version >= 4); |
12901 | break; | |
12902 | default: | |
12903 | low = 0; | |
12904 | low_default_is_valid = 0; | |
12905 | break; | |
a02abb62 JB |
12906 | } |
12907 | ||
dd5e6932 DJ |
12908 | /* FIXME: For variable sized arrays either of these could be |
12909 | a variable rather than a constant value. We'll allow it, | |
12910 | but we don't know how to handle it. */ | |
e142c38c | 12911 | attr = dwarf2_attr (die, DW_AT_lower_bound, cu); |
a02abb62 | 12912 | if (attr) |
4fae6e18 JK |
12913 | low = dwarf2_get_attr_constant_value (attr, low); |
12914 | else if (!low_default_is_valid) | |
12915 | complaint (&symfile_complaints, _("Missing DW_AT_lower_bound " | |
12916 | "- DIE at 0x%x [in module %s]"), | |
12917 | die->offset.sect_off, cu->objfile->name); | |
a02abb62 | 12918 | |
e142c38c | 12919 | attr = dwarf2_attr (die, DW_AT_upper_bound, cu); |
a02abb62 | 12920 | if (attr) |
6e70227d | 12921 | { |
d48323d8 | 12922 | if (attr_form_is_block (attr) || is_ref_attr (attr)) |
a02abb62 JB |
12923 | { |
12924 | /* GCC encodes arrays with unspecified or dynamic length | |
e77813c8 | 12925 | with a DW_FORM_block1 attribute or a reference attribute. |
a02abb62 JB |
12926 | FIXME: GDB does not yet know how to handle dynamic |
12927 | arrays properly, treat them as arrays with unspecified | |
12928 | length for now. | |
12929 | ||
12930 | FIXME: jimb/2003-09-22: GDB does not really know | |
12931 | how to handle arrays of unspecified length | |
12932 | either; we just represent them as zero-length | |
12933 | arrays. Choose an appropriate upper bound given | |
12934 | the lower bound we've computed above. */ | |
12935 | high = low - 1; | |
12936 | } | |
12937 | else | |
12938 | high = dwarf2_get_attr_constant_value (attr, 1); | |
12939 | } | |
e77813c8 PM |
12940 | else |
12941 | { | |
12942 | attr = dwarf2_attr (die, DW_AT_count, cu); | |
12943 | if (attr) | |
12944 | { | |
12945 | int count = dwarf2_get_attr_constant_value (attr, 1); | |
12946 | high = low + count - 1; | |
12947 | } | |
c2ff108b JK |
12948 | else |
12949 | { | |
12950 | /* Unspecified array length. */ | |
12951 | high = low - 1; | |
12952 | } | |
e77813c8 PM |
12953 | } |
12954 | ||
12955 | /* Dwarf-2 specifications explicitly allows to create subrange types | |
12956 | without specifying a base type. | |
12957 | In that case, the base type must be set to the type of | |
12958 | the lower bound, upper bound or count, in that order, if any of these | |
12959 | three attributes references an object that has a type. | |
12960 | If no base type is found, the Dwarf-2 specifications say that | |
12961 | a signed integer type of size equal to the size of an address should | |
12962 | be used. | |
12963 | For the following C code: `extern char gdb_int [];' | |
12964 | GCC produces an empty range DIE. | |
12965 | FIXME: muller/2010-05-28: Possible references to object for low bound, | |
0963b4bd | 12966 | high bound or count are not yet handled by this code. */ |
e77813c8 PM |
12967 | if (TYPE_CODE (base_type) == TYPE_CODE_VOID) |
12968 | { | |
12969 | struct objfile *objfile = cu->objfile; | |
12970 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
12971 | int addr_size = gdbarch_addr_bit (gdbarch) /8; | |
12972 | struct type *int_type = objfile_type (objfile)->builtin_int; | |
12973 | ||
12974 | /* Test "int", "long int", and "long long int" objfile types, | |
12975 | and select the first one having a size above or equal to the | |
12976 | architecture address size. */ | |
12977 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
12978 | base_type = int_type; | |
12979 | else | |
12980 | { | |
12981 | int_type = objfile_type (objfile)->builtin_long; | |
12982 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
12983 | base_type = int_type; | |
12984 | else | |
12985 | { | |
12986 | int_type = objfile_type (objfile)->builtin_long_long; | |
12987 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
12988 | base_type = int_type; | |
12989 | } | |
12990 | } | |
12991 | } | |
a02abb62 | 12992 | |
6e70227d | 12993 | negative_mask = |
43bbcdc2 PH |
12994 | (LONGEST) -1 << (TYPE_LENGTH (base_type) * TARGET_CHAR_BIT - 1); |
12995 | if (!TYPE_UNSIGNED (base_type) && (low & negative_mask)) | |
12996 | low |= negative_mask; | |
12997 | if (!TYPE_UNSIGNED (base_type) && (high & negative_mask)) | |
12998 | high |= negative_mask; | |
12999 | ||
4c9ad8c2 | 13000 | range_type = create_range_type (NULL, orig_base_type, low, high); |
a02abb62 | 13001 | |
bbb0eef6 JK |
13002 | /* Mark arrays with dynamic length at least as an array of unspecified |
13003 | length. GDB could check the boundary but before it gets implemented at | |
13004 | least allow accessing the array elements. */ | |
d48323d8 | 13005 | if (attr && attr_form_is_block (attr)) |
bbb0eef6 JK |
13006 | TYPE_HIGH_BOUND_UNDEFINED (range_type) = 1; |
13007 | ||
c2ff108b JK |
13008 | /* Ada expects an empty array on no boundary attributes. */ |
13009 | if (attr == NULL && cu->language != language_ada) | |
13010 | TYPE_HIGH_BOUND_UNDEFINED (range_type) = 1; | |
13011 | ||
39cbfefa DJ |
13012 | name = dwarf2_name (die, cu); |
13013 | if (name) | |
13014 | TYPE_NAME (range_type) = name; | |
6e70227d | 13015 | |
e142c38c | 13016 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
a02abb62 JB |
13017 | if (attr) |
13018 | TYPE_LENGTH (range_type) = DW_UNSND (attr); | |
13019 | ||
7e314c57 JK |
13020 | set_die_type (die, range_type, cu); |
13021 | ||
13022 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
13023 | set_descriptive_type (range_type, die, cu); |
13024 | ||
7e314c57 | 13025 | return range_type; |
a02abb62 | 13026 | } |
6e70227d | 13027 | |
f792889a | 13028 | static struct type * |
81a17f79 JB |
13029 | read_unspecified_type (struct die_info *die, struct dwarf2_cu *cu) |
13030 | { | |
13031 | struct type *type; | |
81a17f79 | 13032 | |
81a17f79 JB |
13033 | /* For now, we only support the C meaning of an unspecified type: void. */ |
13034 | ||
0114d602 DJ |
13035 | type = init_type (TYPE_CODE_VOID, 0, 0, NULL, cu->objfile); |
13036 | TYPE_NAME (type) = dwarf2_name (die, cu); | |
81a17f79 | 13037 | |
f792889a | 13038 | return set_die_type (die, type, cu); |
81a17f79 | 13039 | } |
a02abb62 | 13040 | |
639d11d3 DC |
13041 | /* Read a single die and all its descendents. Set the die's sibling |
13042 | field to NULL; set other fields in the die correctly, and set all | |
13043 | of the descendents' fields correctly. Set *NEW_INFO_PTR to the | |
13044 | location of the info_ptr after reading all of those dies. PARENT | |
13045 | is the parent of the die in question. */ | |
13046 | ||
13047 | static struct die_info * | |
dee91e82 DE |
13048 | read_die_and_children (const struct die_reader_specs *reader, |
13049 | gdb_byte *info_ptr, | |
13050 | gdb_byte **new_info_ptr, | |
13051 | struct die_info *parent) | |
639d11d3 DC |
13052 | { |
13053 | struct die_info *die; | |
fe1b8b76 | 13054 | gdb_byte *cur_ptr; |
639d11d3 DC |
13055 | int has_children; |
13056 | ||
93311388 | 13057 | cur_ptr = read_full_die (reader, &die, info_ptr, &has_children); |
1d325ec1 DJ |
13058 | if (die == NULL) |
13059 | { | |
13060 | *new_info_ptr = cur_ptr; | |
13061 | return NULL; | |
13062 | } | |
93311388 | 13063 | store_in_ref_table (die, reader->cu); |
639d11d3 DC |
13064 | |
13065 | if (has_children) | |
348e048f | 13066 | die->child = read_die_and_siblings (reader, cur_ptr, new_info_ptr, die); |
639d11d3 DC |
13067 | else |
13068 | { | |
13069 | die->child = NULL; | |
13070 | *new_info_ptr = cur_ptr; | |
13071 | } | |
13072 | ||
13073 | die->sibling = NULL; | |
13074 | die->parent = parent; | |
13075 | return die; | |
13076 | } | |
13077 | ||
13078 | /* Read a die, all of its descendents, and all of its siblings; set | |
13079 | all of the fields of all of the dies correctly. Arguments are as | |
13080 | in read_die_and_children. */ | |
13081 | ||
13082 | static struct die_info * | |
93311388 DE |
13083 | read_die_and_siblings (const struct die_reader_specs *reader, |
13084 | gdb_byte *info_ptr, | |
fe1b8b76 | 13085 | gdb_byte **new_info_ptr, |
639d11d3 DC |
13086 | struct die_info *parent) |
13087 | { | |
13088 | struct die_info *first_die, *last_sibling; | |
fe1b8b76 | 13089 | gdb_byte *cur_ptr; |
639d11d3 | 13090 | |
c906108c | 13091 | cur_ptr = info_ptr; |
639d11d3 DC |
13092 | first_die = last_sibling = NULL; |
13093 | ||
13094 | while (1) | |
c906108c | 13095 | { |
639d11d3 | 13096 | struct die_info *die |
dee91e82 | 13097 | = read_die_and_children (reader, cur_ptr, &cur_ptr, parent); |
639d11d3 | 13098 | |
1d325ec1 | 13099 | if (die == NULL) |
c906108c | 13100 | { |
639d11d3 DC |
13101 | *new_info_ptr = cur_ptr; |
13102 | return first_die; | |
c906108c | 13103 | } |
1d325ec1 DJ |
13104 | |
13105 | if (!first_die) | |
13106 | first_die = die; | |
c906108c | 13107 | else |
1d325ec1 DJ |
13108 | last_sibling->sibling = die; |
13109 | ||
13110 | last_sibling = die; | |
c906108c | 13111 | } |
c906108c SS |
13112 | } |
13113 | ||
3019eac3 DE |
13114 | /* Read a die and all its attributes, leave space for NUM_EXTRA_ATTRS |
13115 | attributes. | |
13116 | The caller is responsible for filling in the extra attributes | |
13117 | and updating (*DIEP)->num_attrs. | |
13118 | Set DIEP to point to a newly allocated die with its information, | |
13119 | except for its child, sibling, and parent fields. | |
13120 | Set HAS_CHILDREN to tell whether the die has children or not. */ | |
93311388 DE |
13121 | |
13122 | static gdb_byte * | |
3019eac3 DE |
13123 | read_full_die_1 (const struct die_reader_specs *reader, |
13124 | struct die_info **diep, gdb_byte *info_ptr, | |
13125 | int *has_children, int num_extra_attrs) | |
93311388 | 13126 | { |
b64f50a1 JK |
13127 | unsigned int abbrev_number, bytes_read, i; |
13128 | sect_offset offset; | |
93311388 DE |
13129 | struct abbrev_info *abbrev; |
13130 | struct die_info *die; | |
13131 | struct dwarf2_cu *cu = reader->cu; | |
13132 | bfd *abfd = reader->abfd; | |
13133 | ||
b64f50a1 | 13134 | offset.sect_off = info_ptr - reader->buffer; |
93311388 DE |
13135 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
13136 | info_ptr += bytes_read; | |
13137 | if (!abbrev_number) | |
13138 | { | |
13139 | *diep = NULL; | |
13140 | *has_children = 0; | |
13141 | return info_ptr; | |
13142 | } | |
13143 | ||
433df2d4 | 13144 | abbrev = abbrev_table_lookup_abbrev (cu->abbrev_table, abbrev_number); |
93311388 | 13145 | if (!abbrev) |
348e048f DE |
13146 | error (_("Dwarf Error: could not find abbrev number %d [in module %s]"), |
13147 | abbrev_number, | |
13148 | bfd_get_filename (abfd)); | |
13149 | ||
3019eac3 | 13150 | die = dwarf_alloc_die (cu, abbrev->num_attrs + num_extra_attrs); |
93311388 DE |
13151 | die->offset = offset; |
13152 | die->tag = abbrev->tag; | |
13153 | die->abbrev = abbrev_number; | |
13154 | ||
3019eac3 DE |
13155 | /* Make the result usable. |
13156 | The caller needs to update num_attrs after adding the extra | |
13157 | attributes. */ | |
93311388 DE |
13158 | die->num_attrs = abbrev->num_attrs; |
13159 | ||
13160 | for (i = 0; i < abbrev->num_attrs; ++i) | |
dee91e82 DE |
13161 | info_ptr = read_attribute (reader, &die->attrs[i], &abbrev->attrs[i], |
13162 | info_ptr); | |
93311388 DE |
13163 | |
13164 | *diep = die; | |
13165 | *has_children = abbrev->has_children; | |
13166 | return info_ptr; | |
13167 | } | |
13168 | ||
3019eac3 DE |
13169 | /* Read a die and all its attributes. |
13170 | Set DIEP to point to a newly allocated die with its information, | |
13171 | except for its child, sibling, and parent fields. | |
13172 | Set HAS_CHILDREN to tell whether the die has children or not. */ | |
13173 | ||
13174 | static gdb_byte * | |
13175 | read_full_die (const struct die_reader_specs *reader, | |
13176 | struct die_info **diep, gdb_byte *info_ptr, | |
13177 | int *has_children) | |
13178 | { | |
13179 | return read_full_die_1 (reader, diep, info_ptr, has_children, 0); | |
13180 | } | |
433df2d4 DE |
13181 | \f |
13182 | /* Abbreviation tables. | |
3019eac3 | 13183 | |
433df2d4 | 13184 | In DWARF version 2, the description of the debugging information is |
c906108c SS |
13185 | stored in a separate .debug_abbrev section. Before we read any |
13186 | dies from a section we read in all abbreviations and install them | |
433df2d4 DE |
13187 | in a hash table. */ |
13188 | ||
13189 | /* Allocate space for a struct abbrev_info object in ABBREV_TABLE. */ | |
13190 | ||
13191 | static struct abbrev_info * | |
13192 | abbrev_table_alloc_abbrev (struct abbrev_table *abbrev_table) | |
13193 | { | |
13194 | struct abbrev_info *abbrev; | |
13195 | ||
13196 | abbrev = (struct abbrev_info *) | |
13197 | obstack_alloc (&abbrev_table->abbrev_obstack, sizeof (struct abbrev_info)); | |
13198 | memset (abbrev, 0, sizeof (struct abbrev_info)); | |
13199 | return abbrev; | |
13200 | } | |
13201 | ||
13202 | /* Add an abbreviation to the table. */ | |
c906108c SS |
13203 | |
13204 | static void | |
433df2d4 DE |
13205 | abbrev_table_add_abbrev (struct abbrev_table *abbrev_table, |
13206 | unsigned int abbrev_number, | |
13207 | struct abbrev_info *abbrev) | |
13208 | { | |
13209 | unsigned int hash_number; | |
13210 | ||
13211 | hash_number = abbrev_number % ABBREV_HASH_SIZE; | |
13212 | abbrev->next = abbrev_table->abbrevs[hash_number]; | |
13213 | abbrev_table->abbrevs[hash_number] = abbrev; | |
13214 | } | |
dee91e82 | 13215 | |
433df2d4 DE |
13216 | /* Look up an abbrev in the table. |
13217 | Returns NULL if the abbrev is not found. */ | |
13218 | ||
13219 | static struct abbrev_info * | |
13220 | abbrev_table_lookup_abbrev (const struct abbrev_table *abbrev_table, | |
13221 | unsigned int abbrev_number) | |
c906108c | 13222 | { |
433df2d4 DE |
13223 | unsigned int hash_number; |
13224 | struct abbrev_info *abbrev; | |
13225 | ||
13226 | hash_number = abbrev_number % ABBREV_HASH_SIZE; | |
13227 | abbrev = abbrev_table->abbrevs[hash_number]; | |
13228 | ||
13229 | while (abbrev) | |
13230 | { | |
13231 | if (abbrev->number == abbrev_number) | |
13232 | return abbrev; | |
13233 | abbrev = abbrev->next; | |
13234 | } | |
13235 | return NULL; | |
13236 | } | |
13237 | ||
13238 | /* Read in an abbrev table. */ | |
13239 | ||
13240 | static struct abbrev_table * | |
13241 | abbrev_table_read_table (struct dwarf2_section_info *section, | |
13242 | sect_offset offset) | |
13243 | { | |
13244 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
13245 | bfd *abfd = section->asection->owner; | |
13246 | struct abbrev_table *abbrev_table; | |
fe1b8b76 | 13247 | gdb_byte *abbrev_ptr; |
c906108c SS |
13248 | struct abbrev_info *cur_abbrev; |
13249 | unsigned int abbrev_number, bytes_read, abbrev_name; | |
433df2d4 | 13250 | unsigned int abbrev_form; |
f3dd6933 DJ |
13251 | struct attr_abbrev *cur_attrs; |
13252 | unsigned int allocated_attrs; | |
c906108c | 13253 | |
433df2d4 | 13254 | abbrev_table = XMALLOC (struct abbrev_table); |
f4dc4d17 | 13255 | abbrev_table->offset = offset; |
433df2d4 DE |
13256 | obstack_init (&abbrev_table->abbrev_obstack); |
13257 | abbrev_table->abbrevs = obstack_alloc (&abbrev_table->abbrev_obstack, | |
13258 | (ABBREV_HASH_SIZE | |
13259 | * sizeof (struct abbrev_info *))); | |
13260 | memset (abbrev_table->abbrevs, 0, | |
13261 | ABBREV_HASH_SIZE * sizeof (struct abbrev_info *)); | |
c906108c | 13262 | |
433df2d4 DE |
13263 | dwarf2_read_section (objfile, section); |
13264 | abbrev_ptr = section->buffer + offset.sect_off; | |
c906108c SS |
13265 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
13266 | abbrev_ptr += bytes_read; | |
13267 | ||
f3dd6933 DJ |
13268 | allocated_attrs = ATTR_ALLOC_CHUNK; |
13269 | cur_attrs = xmalloc (allocated_attrs * sizeof (struct attr_abbrev)); | |
6e70227d | 13270 | |
0963b4bd | 13271 | /* Loop until we reach an abbrev number of 0. */ |
c906108c SS |
13272 | while (abbrev_number) |
13273 | { | |
433df2d4 | 13274 | cur_abbrev = abbrev_table_alloc_abbrev (abbrev_table); |
c906108c SS |
13275 | |
13276 | /* read in abbrev header */ | |
13277 | cur_abbrev->number = abbrev_number; | |
13278 | cur_abbrev->tag = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
13279 | abbrev_ptr += bytes_read; | |
13280 | cur_abbrev->has_children = read_1_byte (abfd, abbrev_ptr); | |
13281 | abbrev_ptr += 1; | |
13282 | ||
13283 | /* now read in declarations */ | |
13284 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
13285 | abbrev_ptr += bytes_read; | |
13286 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
13287 | abbrev_ptr += bytes_read; | |
13288 | while (abbrev_name) | |
13289 | { | |
f3dd6933 | 13290 | if (cur_abbrev->num_attrs == allocated_attrs) |
c906108c | 13291 | { |
f3dd6933 DJ |
13292 | allocated_attrs += ATTR_ALLOC_CHUNK; |
13293 | cur_attrs | |
13294 | = xrealloc (cur_attrs, (allocated_attrs | |
13295 | * sizeof (struct attr_abbrev))); | |
c906108c | 13296 | } |
ae038cb0 | 13297 | |
f3dd6933 DJ |
13298 | cur_attrs[cur_abbrev->num_attrs].name = abbrev_name; |
13299 | cur_attrs[cur_abbrev->num_attrs++].form = abbrev_form; | |
c906108c SS |
13300 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
13301 | abbrev_ptr += bytes_read; | |
13302 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
13303 | abbrev_ptr += bytes_read; | |
13304 | } | |
13305 | ||
433df2d4 | 13306 | cur_abbrev->attrs = obstack_alloc (&abbrev_table->abbrev_obstack, |
f3dd6933 DJ |
13307 | (cur_abbrev->num_attrs |
13308 | * sizeof (struct attr_abbrev))); | |
13309 | memcpy (cur_abbrev->attrs, cur_attrs, | |
13310 | cur_abbrev->num_attrs * sizeof (struct attr_abbrev)); | |
13311 | ||
433df2d4 | 13312 | abbrev_table_add_abbrev (abbrev_table, abbrev_number, cur_abbrev); |
c906108c SS |
13313 | |
13314 | /* Get next abbreviation. | |
13315 | Under Irix6 the abbreviations for a compilation unit are not | |
c5aa993b JM |
13316 | always properly terminated with an abbrev number of 0. |
13317 | Exit loop if we encounter an abbreviation which we have | |
13318 | already read (which means we are about to read the abbreviations | |
13319 | for the next compile unit) or if the end of the abbreviation | |
13320 | table is reached. */ | |
433df2d4 | 13321 | if ((unsigned int) (abbrev_ptr - section->buffer) >= section->size) |
c906108c SS |
13322 | break; |
13323 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
13324 | abbrev_ptr += bytes_read; | |
433df2d4 | 13325 | if (abbrev_table_lookup_abbrev (abbrev_table, abbrev_number) != NULL) |
c906108c SS |
13326 | break; |
13327 | } | |
f3dd6933 DJ |
13328 | |
13329 | xfree (cur_attrs); | |
433df2d4 | 13330 | return abbrev_table; |
c906108c SS |
13331 | } |
13332 | ||
433df2d4 | 13333 | /* Free the resources held by ABBREV_TABLE. */ |
c906108c | 13334 | |
c906108c | 13335 | static void |
433df2d4 | 13336 | abbrev_table_free (struct abbrev_table *abbrev_table) |
c906108c | 13337 | { |
433df2d4 DE |
13338 | obstack_free (&abbrev_table->abbrev_obstack, NULL); |
13339 | xfree (abbrev_table); | |
c906108c SS |
13340 | } |
13341 | ||
f4dc4d17 DE |
13342 | /* Same as abbrev_table_free but as a cleanup. |
13343 | We pass in a pointer to the pointer to the table so that we can | |
13344 | set the pointer to NULL when we're done. It also simplifies | |
13345 | build_type_unit_groups. */ | |
13346 | ||
13347 | static void | |
13348 | abbrev_table_free_cleanup (void *table_ptr) | |
13349 | { | |
13350 | struct abbrev_table **abbrev_table_ptr = table_ptr; | |
13351 | ||
13352 | if (*abbrev_table_ptr != NULL) | |
13353 | abbrev_table_free (*abbrev_table_ptr); | |
13354 | *abbrev_table_ptr = NULL; | |
13355 | } | |
13356 | ||
433df2d4 DE |
13357 | /* Read the abbrev table for CU from ABBREV_SECTION. */ |
13358 | ||
13359 | static void | |
13360 | dwarf2_read_abbrevs (struct dwarf2_cu *cu, | |
13361 | struct dwarf2_section_info *abbrev_section) | |
c906108c | 13362 | { |
433df2d4 DE |
13363 | cu->abbrev_table = |
13364 | abbrev_table_read_table (abbrev_section, cu->header.abbrev_offset); | |
13365 | } | |
c906108c | 13366 | |
433df2d4 | 13367 | /* Release the memory used by the abbrev table for a compilation unit. */ |
c906108c | 13368 | |
433df2d4 DE |
13369 | static void |
13370 | dwarf2_free_abbrev_table (void *ptr_to_cu) | |
13371 | { | |
13372 | struct dwarf2_cu *cu = ptr_to_cu; | |
c906108c | 13373 | |
433df2d4 DE |
13374 | abbrev_table_free (cu->abbrev_table); |
13375 | /* Set this to NULL so that we SEGV if we try to read it later, | |
13376 | and also because free_comp_unit verifies this is NULL. */ | |
13377 | cu->abbrev_table = NULL; | |
13378 | } | |
13379 | \f | |
72bf9492 DJ |
13380 | /* Returns nonzero if TAG represents a type that we might generate a partial |
13381 | symbol for. */ | |
13382 | ||
13383 | static int | |
13384 | is_type_tag_for_partial (int tag) | |
13385 | { | |
13386 | switch (tag) | |
13387 | { | |
13388 | #if 0 | |
13389 | /* Some types that would be reasonable to generate partial symbols for, | |
13390 | that we don't at present. */ | |
13391 | case DW_TAG_array_type: | |
13392 | case DW_TAG_file_type: | |
13393 | case DW_TAG_ptr_to_member_type: | |
13394 | case DW_TAG_set_type: | |
13395 | case DW_TAG_string_type: | |
13396 | case DW_TAG_subroutine_type: | |
13397 | #endif | |
13398 | case DW_TAG_base_type: | |
13399 | case DW_TAG_class_type: | |
680b30c7 | 13400 | case DW_TAG_interface_type: |
72bf9492 DJ |
13401 | case DW_TAG_enumeration_type: |
13402 | case DW_TAG_structure_type: | |
13403 | case DW_TAG_subrange_type: | |
13404 | case DW_TAG_typedef: | |
13405 | case DW_TAG_union_type: | |
13406 | return 1; | |
13407 | default: | |
13408 | return 0; | |
13409 | } | |
13410 | } | |
13411 | ||
13412 | /* Load all DIEs that are interesting for partial symbols into memory. */ | |
13413 | ||
13414 | static struct partial_die_info * | |
dee91e82 DE |
13415 | load_partial_dies (const struct die_reader_specs *reader, |
13416 | gdb_byte *info_ptr, int building_psymtab) | |
72bf9492 | 13417 | { |
dee91e82 | 13418 | struct dwarf2_cu *cu = reader->cu; |
bb5ed363 | 13419 | struct objfile *objfile = cu->objfile; |
72bf9492 DJ |
13420 | struct partial_die_info *part_die; |
13421 | struct partial_die_info *parent_die, *last_die, *first_die = NULL; | |
13422 | struct abbrev_info *abbrev; | |
13423 | unsigned int bytes_read; | |
5afb4e99 | 13424 | unsigned int load_all = 0; |
72bf9492 DJ |
13425 | int nesting_level = 1; |
13426 | ||
13427 | parent_die = NULL; | |
13428 | last_die = NULL; | |
13429 | ||
7adf1e79 DE |
13430 | gdb_assert (cu->per_cu != NULL); |
13431 | if (cu->per_cu->load_all_dies) | |
5afb4e99 DJ |
13432 | load_all = 1; |
13433 | ||
72bf9492 DJ |
13434 | cu->partial_dies |
13435 | = htab_create_alloc_ex (cu->header.length / 12, | |
13436 | partial_die_hash, | |
13437 | partial_die_eq, | |
13438 | NULL, | |
13439 | &cu->comp_unit_obstack, | |
13440 | hashtab_obstack_allocate, | |
13441 | dummy_obstack_deallocate); | |
13442 | ||
13443 | part_die = obstack_alloc (&cu->comp_unit_obstack, | |
13444 | sizeof (struct partial_die_info)); | |
13445 | ||
13446 | while (1) | |
13447 | { | |
13448 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, cu); | |
13449 | ||
13450 | /* A NULL abbrev means the end of a series of children. */ | |
13451 | if (abbrev == NULL) | |
13452 | { | |
13453 | if (--nesting_level == 0) | |
13454 | { | |
13455 | /* PART_DIE was probably the last thing allocated on the | |
13456 | comp_unit_obstack, so we could call obstack_free | |
13457 | here. We don't do that because the waste is small, | |
13458 | and will be cleaned up when we're done with this | |
13459 | compilation unit. This way, we're also more robust | |
13460 | against other users of the comp_unit_obstack. */ | |
13461 | return first_die; | |
13462 | } | |
13463 | info_ptr += bytes_read; | |
13464 | last_die = parent_die; | |
13465 | parent_die = parent_die->die_parent; | |
13466 | continue; | |
13467 | } | |
13468 | ||
98bfdba5 PA |
13469 | /* Check for template arguments. We never save these; if |
13470 | they're seen, we just mark the parent, and go on our way. */ | |
13471 | if (parent_die != NULL | |
13472 | && cu->language == language_cplus | |
13473 | && (abbrev->tag == DW_TAG_template_type_param | |
13474 | || abbrev->tag == DW_TAG_template_value_param)) | |
13475 | { | |
13476 | parent_die->has_template_arguments = 1; | |
13477 | ||
13478 | if (!load_all) | |
13479 | { | |
13480 | /* We don't need a partial DIE for the template argument. */ | |
dee91e82 | 13481 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
13482 | continue; |
13483 | } | |
13484 | } | |
13485 | ||
0d99eb77 | 13486 | /* We only recurse into c++ subprograms looking for template arguments. |
98bfdba5 PA |
13487 | Skip their other children. */ |
13488 | if (!load_all | |
13489 | && cu->language == language_cplus | |
13490 | && parent_die != NULL | |
13491 | && parent_die->tag == DW_TAG_subprogram) | |
13492 | { | |
dee91e82 | 13493 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
13494 | continue; |
13495 | } | |
13496 | ||
5afb4e99 DJ |
13497 | /* Check whether this DIE is interesting enough to save. Normally |
13498 | we would not be interested in members here, but there may be | |
13499 | later variables referencing them via DW_AT_specification (for | |
13500 | static members). */ | |
13501 | if (!load_all | |
13502 | && !is_type_tag_for_partial (abbrev->tag) | |
72929c62 | 13503 | && abbrev->tag != DW_TAG_constant |
72bf9492 DJ |
13504 | && abbrev->tag != DW_TAG_enumerator |
13505 | && abbrev->tag != DW_TAG_subprogram | |
bc30ff58 | 13506 | && abbrev->tag != DW_TAG_lexical_block |
72bf9492 | 13507 | && abbrev->tag != DW_TAG_variable |
5afb4e99 | 13508 | && abbrev->tag != DW_TAG_namespace |
f55ee35c | 13509 | && abbrev->tag != DW_TAG_module |
95554aad TT |
13510 | && abbrev->tag != DW_TAG_member |
13511 | && abbrev->tag != DW_TAG_imported_unit) | |
72bf9492 DJ |
13512 | { |
13513 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 13514 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
72bf9492 DJ |
13515 | continue; |
13516 | } | |
13517 | ||
dee91e82 DE |
13518 | info_ptr = read_partial_die (reader, part_die, abbrev, bytes_read, |
13519 | info_ptr); | |
72bf9492 DJ |
13520 | |
13521 | /* This two-pass algorithm for processing partial symbols has a | |
13522 | high cost in cache pressure. Thus, handle some simple cases | |
13523 | here which cover the majority of C partial symbols. DIEs | |
13524 | which neither have specification tags in them, nor could have | |
13525 | specification tags elsewhere pointing at them, can simply be | |
13526 | processed and discarded. | |
13527 | ||
13528 | This segment is also optional; scan_partial_symbols and | |
13529 | add_partial_symbol will handle these DIEs if we chain | |
13530 | them in normally. When compilers which do not emit large | |
13531 | quantities of duplicate debug information are more common, | |
13532 | this code can probably be removed. */ | |
13533 | ||
13534 | /* Any complete simple types at the top level (pretty much all | |
13535 | of them, for a language without namespaces), can be processed | |
13536 | directly. */ | |
13537 | if (parent_die == NULL | |
13538 | && part_die->has_specification == 0 | |
13539 | && part_die->is_declaration == 0 | |
d8228535 | 13540 | && ((part_die->tag == DW_TAG_typedef && !part_die->has_children) |
72bf9492 DJ |
13541 | || part_die->tag == DW_TAG_base_type |
13542 | || part_die->tag == DW_TAG_subrange_type)) | |
13543 | { | |
13544 | if (building_psymtab && part_die->name != NULL) | |
04a679b8 | 13545 | add_psymbol_to_list (part_die->name, strlen (part_die->name), 0, |
72bf9492 | 13546 | VAR_DOMAIN, LOC_TYPEDEF, |
bb5ed363 DE |
13547 | &objfile->static_psymbols, |
13548 | 0, (CORE_ADDR) 0, cu->language, objfile); | |
dee91e82 | 13549 | info_ptr = locate_pdi_sibling (reader, part_die, info_ptr); |
72bf9492 DJ |
13550 | continue; |
13551 | } | |
13552 | ||
d8228535 JK |
13553 | /* The exception for DW_TAG_typedef with has_children above is |
13554 | a workaround of GCC PR debug/47510. In the case of this complaint | |
13555 | type_name_no_tag_or_error will error on such types later. | |
13556 | ||
13557 | GDB skipped children of DW_TAG_typedef by the shortcut above and then | |
13558 | it could not find the child DIEs referenced later, this is checked | |
13559 | above. In correct DWARF DW_TAG_typedef should have no children. */ | |
13560 | ||
13561 | if (part_die->tag == DW_TAG_typedef && part_die->has_children) | |
13562 | complaint (&symfile_complaints, | |
13563 | _("DW_TAG_typedef has childen - GCC PR debug/47510 bug " | |
13564 | "- DIE at 0x%x [in module %s]"), | |
b64f50a1 | 13565 | part_die->offset.sect_off, objfile->name); |
d8228535 | 13566 | |
72bf9492 DJ |
13567 | /* If we're at the second level, and we're an enumerator, and |
13568 | our parent has no specification (meaning possibly lives in a | |
13569 | namespace elsewhere), then we can add the partial symbol now | |
13570 | instead of queueing it. */ | |
13571 | if (part_die->tag == DW_TAG_enumerator | |
13572 | && parent_die != NULL | |
13573 | && parent_die->die_parent == NULL | |
13574 | && parent_die->tag == DW_TAG_enumeration_type | |
13575 | && parent_die->has_specification == 0) | |
13576 | { | |
13577 | if (part_die->name == NULL) | |
3e43a32a MS |
13578 | complaint (&symfile_complaints, |
13579 | _("malformed enumerator DIE ignored")); | |
72bf9492 | 13580 | else if (building_psymtab) |
04a679b8 | 13581 | add_psymbol_to_list (part_die->name, strlen (part_die->name), 0, |
72bf9492 | 13582 | VAR_DOMAIN, LOC_CONST, |
987504bb JJ |
13583 | (cu->language == language_cplus |
13584 | || cu->language == language_java) | |
bb5ed363 DE |
13585 | ? &objfile->global_psymbols |
13586 | : &objfile->static_psymbols, | |
13587 | 0, (CORE_ADDR) 0, cu->language, objfile); | |
72bf9492 | 13588 | |
dee91e82 | 13589 | info_ptr = locate_pdi_sibling (reader, part_die, info_ptr); |
72bf9492 DJ |
13590 | continue; |
13591 | } | |
13592 | ||
13593 | /* We'll save this DIE so link it in. */ | |
13594 | part_die->die_parent = parent_die; | |
13595 | part_die->die_sibling = NULL; | |
13596 | part_die->die_child = NULL; | |
13597 | ||
13598 | if (last_die && last_die == parent_die) | |
13599 | last_die->die_child = part_die; | |
13600 | else if (last_die) | |
13601 | last_die->die_sibling = part_die; | |
13602 | ||
13603 | last_die = part_die; | |
13604 | ||
13605 | if (first_die == NULL) | |
13606 | first_die = part_die; | |
13607 | ||
13608 | /* Maybe add the DIE to the hash table. Not all DIEs that we | |
13609 | find interesting need to be in the hash table, because we | |
13610 | also have the parent/sibling/child chains; only those that we | |
13611 | might refer to by offset later during partial symbol reading. | |
13612 | ||
13613 | For now this means things that might have be the target of a | |
13614 | DW_AT_specification, DW_AT_abstract_origin, or | |
13615 | DW_AT_extension. DW_AT_extension will refer only to | |
13616 | namespaces; DW_AT_abstract_origin refers to functions (and | |
13617 | many things under the function DIE, but we do not recurse | |
13618 | into function DIEs during partial symbol reading) and | |
13619 | possibly variables as well; DW_AT_specification refers to | |
13620 | declarations. Declarations ought to have the DW_AT_declaration | |
13621 | flag. It happens that GCC forgets to put it in sometimes, but | |
13622 | only for functions, not for types. | |
13623 | ||
13624 | Adding more things than necessary to the hash table is harmless | |
13625 | except for the performance cost. Adding too few will result in | |
5afb4e99 DJ |
13626 | wasted time in find_partial_die, when we reread the compilation |
13627 | unit with load_all_dies set. */ | |
72bf9492 | 13628 | |
5afb4e99 | 13629 | if (load_all |
72929c62 | 13630 | || abbrev->tag == DW_TAG_constant |
5afb4e99 | 13631 | || abbrev->tag == DW_TAG_subprogram |
72bf9492 DJ |
13632 | || abbrev->tag == DW_TAG_variable |
13633 | || abbrev->tag == DW_TAG_namespace | |
13634 | || part_die->is_declaration) | |
13635 | { | |
13636 | void **slot; | |
13637 | ||
13638 | slot = htab_find_slot_with_hash (cu->partial_dies, part_die, | |
b64f50a1 | 13639 | part_die->offset.sect_off, INSERT); |
72bf9492 DJ |
13640 | *slot = part_die; |
13641 | } | |
13642 | ||
13643 | part_die = obstack_alloc (&cu->comp_unit_obstack, | |
13644 | sizeof (struct partial_die_info)); | |
13645 | ||
13646 | /* For some DIEs we want to follow their children (if any). For C | |
bc30ff58 | 13647 | we have no reason to follow the children of structures; for other |
98bfdba5 PA |
13648 | languages we have to, so that we can get at method physnames |
13649 | to infer fully qualified class names, for DW_AT_specification, | |
13650 | and for C++ template arguments. For C++, we also look one level | |
13651 | inside functions to find template arguments (if the name of the | |
13652 | function does not already contain the template arguments). | |
bc30ff58 JB |
13653 | |
13654 | For Ada, we need to scan the children of subprograms and lexical | |
13655 | blocks as well because Ada allows the definition of nested | |
13656 | entities that could be interesting for the debugger, such as | |
13657 | nested subprograms for instance. */ | |
72bf9492 | 13658 | if (last_die->has_children |
5afb4e99 DJ |
13659 | && (load_all |
13660 | || last_die->tag == DW_TAG_namespace | |
f55ee35c | 13661 | || last_die->tag == DW_TAG_module |
72bf9492 | 13662 | || last_die->tag == DW_TAG_enumeration_type |
98bfdba5 PA |
13663 | || (cu->language == language_cplus |
13664 | && last_die->tag == DW_TAG_subprogram | |
13665 | && (last_die->name == NULL | |
13666 | || strchr (last_die->name, '<') == NULL)) | |
72bf9492 DJ |
13667 | || (cu->language != language_c |
13668 | && (last_die->tag == DW_TAG_class_type | |
680b30c7 | 13669 | || last_die->tag == DW_TAG_interface_type |
72bf9492 | 13670 | || last_die->tag == DW_TAG_structure_type |
bc30ff58 JB |
13671 | || last_die->tag == DW_TAG_union_type)) |
13672 | || (cu->language == language_ada | |
13673 | && (last_die->tag == DW_TAG_subprogram | |
13674 | || last_die->tag == DW_TAG_lexical_block)))) | |
72bf9492 DJ |
13675 | { |
13676 | nesting_level++; | |
13677 | parent_die = last_die; | |
13678 | continue; | |
13679 | } | |
13680 | ||
13681 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 13682 | info_ptr = locate_pdi_sibling (reader, last_die, info_ptr); |
72bf9492 DJ |
13683 | |
13684 | /* Back to the top, do it again. */ | |
13685 | } | |
13686 | } | |
13687 | ||
c906108c SS |
13688 | /* Read a minimal amount of information into the minimal die structure. */ |
13689 | ||
fe1b8b76 | 13690 | static gdb_byte * |
dee91e82 DE |
13691 | read_partial_die (const struct die_reader_specs *reader, |
13692 | struct partial_die_info *part_die, | |
13693 | struct abbrev_info *abbrev, unsigned int abbrev_len, | |
13694 | gdb_byte *info_ptr) | |
c906108c | 13695 | { |
dee91e82 | 13696 | struct dwarf2_cu *cu = reader->cu; |
bb5ed363 | 13697 | struct objfile *objfile = cu->objfile; |
dee91e82 | 13698 | gdb_byte *buffer = reader->buffer; |
fa238c03 | 13699 | unsigned int i; |
c906108c | 13700 | struct attribute attr; |
c5aa993b | 13701 | int has_low_pc_attr = 0; |
c906108c | 13702 | int has_high_pc_attr = 0; |
91da1414 | 13703 | int high_pc_relative = 0; |
c906108c | 13704 | |
72bf9492 | 13705 | memset (part_die, 0, sizeof (struct partial_die_info)); |
c906108c | 13706 | |
b64f50a1 | 13707 | part_die->offset.sect_off = info_ptr - buffer; |
72bf9492 DJ |
13708 | |
13709 | info_ptr += abbrev_len; | |
13710 | ||
13711 | if (abbrev == NULL) | |
13712 | return info_ptr; | |
13713 | ||
c906108c SS |
13714 | part_die->tag = abbrev->tag; |
13715 | part_die->has_children = abbrev->has_children; | |
c906108c SS |
13716 | |
13717 | for (i = 0; i < abbrev->num_attrs; ++i) | |
13718 | { | |
dee91e82 | 13719 | info_ptr = read_attribute (reader, &attr, &abbrev->attrs[i], info_ptr); |
c906108c SS |
13720 | |
13721 | /* Store the data if it is of an attribute we want to keep in a | |
c5aa993b | 13722 | partial symbol table. */ |
c906108c SS |
13723 | switch (attr.name) |
13724 | { | |
13725 | case DW_AT_name: | |
71c25dea TT |
13726 | switch (part_die->tag) |
13727 | { | |
13728 | case DW_TAG_compile_unit: | |
95554aad | 13729 | case DW_TAG_partial_unit: |
348e048f | 13730 | case DW_TAG_type_unit: |
71c25dea TT |
13731 | /* Compilation units have a DW_AT_name that is a filename, not |
13732 | a source language identifier. */ | |
13733 | case DW_TAG_enumeration_type: | |
13734 | case DW_TAG_enumerator: | |
13735 | /* These tags always have simple identifiers already; no need | |
13736 | to canonicalize them. */ | |
13737 | part_die->name = DW_STRING (&attr); | |
13738 | break; | |
13739 | default: | |
13740 | part_die->name | |
13741 | = dwarf2_canonicalize_name (DW_STRING (&attr), cu, | |
bb5ed363 | 13742 | &objfile->objfile_obstack); |
71c25dea TT |
13743 | break; |
13744 | } | |
c906108c | 13745 | break; |
31ef98ae | 13746 | case DW_AT_linkage_name: |
c906108c | 13747 | case DW_AT_MIPS_linkage_name: |
31ef98ae TT |
13748 | /* Note that both forms of linkage name might appear. We |
13749 | assume they will be the same, and we only store the last | |
13750 | one we see. */ | |
94af9270 KS |
13751 | if (cu->language == language_ada) |
13752 | part_die->name = DW_STRING (&attr); | |
abc72ce4 | 13753 | part_die->linkage_name = DW_STRING (&attr); |
c906108c SS |
13754 | break; |
13755 | case DW_AT_low_pc: | |
13756 | has_low_pc_attr = 1; | |
13757 | part_die->lowpc = DW_ADDR (&attr); | |
13758 | break; | |
13759 | case DW_AT_high_pc: | |
13760 | has_high_pc_attr = 1; | |
3019eac3 DE |
13761 | if (attr.form == DW_FORM_addr |
13762 | || attr.form == DW_FORM_GNU_addr_index) | |
91da1414 MW |
13763 | part_die->highpc = DW_ADDR (&attr); |
13764 | else | |
13765 | { | |
13766 | high_pc_relative = 1; | |
13767 | part_die->highpc = DW_UNSND (&attr); | |
13768 | } | |
c906108c SS |
13769 | break; |
13770 | case DW_AT_location: | |
0963b4bd | 13771 | /* Support the .debug_loc offsets. */ |
8e19ed76 PS |
13772 | if (attr_form_is_block (&attr)) |
13773 | { | |
95554aad | 13774 | part_die->d.locdesc = DW_BLOCK (&attr); |
8e19ed76 | 13775 | } |
3690dd37 | 13776 | else if (attr_form_is_section_offset (&attr)) |
8e19ed76 | 13777 | { |
4d3c2250 | 13778 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
13779 | } |
13780 | else | |
13781 | { | |
4d3c2250 KB |
13782 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
13783 | "partial symbol information"); | |
8e19ed76 | 13784 | } |
c906108c | 13785 | break; |
c906108c SS |
13786 | case DW_AT_external: |
13787 | part_die->is_external = DW_UNSND (&attr); | |
13788 | break; | |
13789 | case DW_AT_declaration: | |
13790 | part_die->is_declaration = DW_UNSND (&attr); | |
13791 | break; | |
13792 | case DW_AT_type: | |
13793 | part_die->has_type = 1; | |
13794 | break; | |
13795 | case DW_AT_abstract_origin: | |
13796 | case DW_AT_specification: | |
72bf9492 DJ |
13797 | case DW_AT_extension: |
13798 | part_die->has_specification = 1; | |
c764a876 | 13799 | part_die->spec_offset = dwarf2_get_ref_die_offset (&attr); |
36586728 TT |
13800 | part_die->spec_is_dwz = (attr.form == DW_FORM_GNU_ref_alt |
13801 | || cu->per_cu->is_dwz); | |
c906108c SS |
13802 | break; |
13803 | case DW_AT_sibling: | |
13804 | /* Ignore absolute siblings, they might point outside of | |
13805 | the current compile unit. */ | |
13806 | if (attr.form == DW_FORM_ref_addr) | |
3e43a32a MS |
13807 | complaint (&symfile_complaints, |
13808 | _("ignoring absolute DW_AT_sibling")); | |
c906108c | 13809 | else |
b64f50a1 | 13810 | part_die->sibling = buffer + dwarf2_get_ref_die_offset (&attr).sect_off; |
c906108c | 13811 | break; |
fa4028e9 JB |
13812 | case DW_AT_byte_size: |
13813 | part_die->has_byte_size = 1; | |
13814 | break; | |
68511cec CES |
13815 | case DW_AT_calling_convention: |
13816 | /* DWARF doesn't provide a way to identify a program's source-level | |
13817 | entry point. DW_AT_calling_convention attributes are only meant | |
13818 | to describe functions' calling conventions. | |
13819 | ||
13820 | However, because it's a necessary piece of information in | |
13821 | Fortran, and because DW_CC_program is the only piece of debugging | |
13822 | information whose definition refers to a 'main program' at all, | |
13823 | several compilers have begun marking Fortran main programs with | |
13824 | DW_CC_program --- even when those functions use the standard | |
13825 | calling conventions. | |
13826 | ||
13827 | So until DWARF specifies a way to provide this information and | |
13828 | compilers pick up the new representation, we'll support this | |
13829 | practice. */ | |
13830 | if (DW_UNSND (&attr) == DW_CC_program | |
13831 | && cu->language == language_fortran) | |
01f8c46d JK |
13832 | { |
13833 | set_main_name (part_die->name); | |
13834 | ||
13835 | /* As this DIE has a static linkage the name would be difficult | |
13836 | to look up later. */ | |
13837 | language_of_main = language_fortran; | |
13838 | } | |
68511cec | 13839 | break; |
481860b3 GB |
13840 | case DW_AT_inline: |
13841 | if (DW_UNSND (&attr) == DW_INL_inlined | |
13842 | || DW_UNSND (&attr) == DW_INL_declared_inlined) | |
13843 | part_die->may_be_inlined = 1; | |
13844 | break; | |
95554aad TT |
13845 | |
13846 | case DW_AT_import: | |
13847 | if (part_die->tag == DW_TAG_imported_unit) | |
36586728 TT |
13848 | { |
13849 | part_die->d.offset = dwarf2_get_ref_die_offset (&attr); | |
13850 | part_die->is_dwz = (attr.form == DW_FORM_GNU_ref_alt | |
13851 | || cu->per_cu->is_dwz); | |
13852 | } | |
95554aad TT |
13853 | break; |
13854 | ||
c906108c SS |
13855 | default: |
13856 | break; | |
13857 | } | |
13858 | } | |
13859 | ||
91da1414 MW |
13860 | if (high_pc_relative) |
13861 | part_die->highpc += part_die->lowpc; | |
13862 | ||
9373cf26 JK |
13863 | if (has_low_pc_attr && has_high_pc_attr) |
13864 | { | |
13865 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
13866 | eliminate duplicate copies of functions and vtables and such. | |
13867 | The linker will arbitrarily choose one and discard the others. | |
13868 | The AT_*_pc values for such functions refer to local labels in | |
13869 | these sections. If the section from that file was discarded, the | |
13870 | labels are not in the output, so the relocs get a value of 0. | |
13871 | If this is a discarded function, mark the pc bounds as invalid, | |
13872 | so that GDB will ignore it. */ | |
13873 | if (part_die->lowpc == 0 && !dwarf2_per_objfile->has_section_at_zero) | |
13874 | { | |
bb5ed363 | 13875 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9373cf26 JK |
13876 | |
13877 | complaint (&symfile_complaints, | |
13878 | _("DW_AT_low_pc %s is zero " | |
13879 | "for DIE at 0x%x [in module %s]"), | |
13880 | paddress (gdbarch, part_die->lowpc), | |
b64f50a1 | 13881 | part_die->offset.sect_off, objfile->name); |
9373cf26 JK |
13882 | } |
13883 | /* dwarf2_get_pc_bounds has also the strict low < high requirement. */ | |
13884 | else if (part_die->lowpc >= part_die->highpc) | |
13885 | { | |
bb5ed363 | 13886 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9373cf26 JK |
13887 | |
13888 | complaint (&symfile_complaints, | |
13889 | _("DW_AT_low_pc %s is not < DW_AT_high_pc %s " | |
13890 | "for DIE at 0x%x [in module %s]"), | |
13891 | paddress (gdbarch, part_die->lowpc), | |
13892 | paddress (gdbarch, part_die->highpc), | |
b64f50a1 | 13893 | part_die->offset.sect_off, objfile->name); |
9373cf26 JK |
13894 | } |
13895 | else | |
13896 | part_die->has_pc_info = 1; | |
13897 | } | |
85cbf3d3 | 13898 | |
c906108c SS |
13899 | return info_ptr; |
13900 | } | |
13901 | ||
72bf9492 DJ |
13902 | /* Find a cached partial DIE at OFFSET in CU. */ |
13903 | ||
13904 | static struct partial_die_info * | |
b64f50a1 | 13905 | find_partial_die_in_comp_unit (sect_offset offset, struct dwarf2_cu *cu) |
72bf9492 DJ |
13906 | { |
13907 | struct partial_die_info *lookup_die = NULL; | |
13908 | struct partial_die_info part_die; | |
13909 | ||
13910 | part_die.offset = offset; | |
b64f50a1 JK |
13911 | lookup_die = htab_find_with_hash (cu->partial_dies, &part_die, |
13912 | offset.sect_off); | |
72bf9492 | 13913 | |
72bf9492 DJ |
13914 | return lookup_die; |
13915 | } | |
13916 | ||
348e048f DE |
13917 | /* Find a partial DIE at OFFSET, which may or may not be in CU, |
13918 | except in the case of .debug_types DIEs which do not reference | |
13919 | outside their CU (they do however referencing other types via | |
55f1336d | 13920 | DW_FORM_ref_sig8). */ |
72bf9492 DJ |
13921 | |
13922 | static struct partial_die_info * | |
36586728 | 13923 | find_partial_die (sect_offset offset, int offset_in_dwz, struct dwarf2_cu *cu) |
72bf9492 | 13924 | { |
bb5ed363 | 13925 | struct objfile *objfile = cu->objfile; |
5afb4e99 DJ |
13926 | struct dwarf2_per_cu_data *per_cu = NULL; |
13927 | struct partial_die_info *pd = NULL; | |
72bf9492 | 13928 | |
36586728 TT |
13929 | if (offset_in_dwz == cu->per_cu->is_dwz |
13930 | && offset_in_cu_p (&cu->header, offset)) | |
5afb4e99 DJ |
13931 | { |
13932 | pd = find_partial_die_in_comp_unit (offset, cu); | |
13933 | if (pd != NULL) | |
13934 | return pd; | |
0d99eb77 DE |
13935 | /* We missed recording what we needed. |
13936 | Load all dies and try again. */ | |
13937 | per_cu = cu->per_cu; | |
5afb4e99 | 13938 | } |
0d99eb77 DE |
13939 | else |
13940 | { | |
13941 | /* TUs don't reference other CUs/TUs (except via type signatures). */ | |
3019eac3 | 13942 | if (cu->per_cu->is_debug_types) |
0d99eb77 DE |
13943 | { |
13944 | error (_("Dwarf Error: Type Unit at offset 0x%lx contains" | |
13945 | " external reference to offset 0x%lx [in module %s].\n"), | |
13946 | (long) cu->header.offset.sect_off, (long) offset.sect_off, | |
13947 | bfd_get_filename (objfile->obfd)); | |
13948 | } | |
36586728 TT |
13949 | per_cu = dwarf2_find_containing_comp_unit (offset, offset_in_dwz, |
13950 | objfile); | |
72bf9492 | 13951 | |
0d99eb77 DE |
13952 | if (per_cu->cu == NULL || per_cu->cu->partial_dies == NULL) |
13953 | load_partial_comp_unit (per_cu); | |
ae038cb0 | 13954 | |
0d99eb77 DE |
13955 | per_cu->cu->last_used = 0; |
13956 | pd = find_partial_die_in_comp_unit (offset, per_cu->cu); | |
13957 | } | |
5afb4e99 | 13958 | |
dee91e82 DE |
13959 | /* If we didn't find it, and not all dies have been loaded, |
13960 | load them all and try again. */ | |
13961 | ||
5afb4e99 DJ |
13962 | if (pd == NULL && per_cu->load_all_dies == 0) |
13963 | { | |
5afb4e99 | 13964 | per_cu->load_all_dies = 1; |
fd820528 DE |
13965 | |
13966 | /* This is nasty. When we reread the DIEs, somewhere up the call chain | |
13967 | THIS_CU->cu may already be in use. So we can't just free it and | |
13968 | replace its DIEs with the ones we read in. Instead, we leave those | |
13969 | DIEs alone (which can still be in use, e.g. in scan_partial_symbols), | |
13970 | and clobber THIS_CU->cu->partial_dies with the hash table for the new | |
13971 | set. */ | |
dee91e82 | 13972 | load_partial_comp_unit (per_cu); |
5afb4e99 DJ |
13973 | |
13974 | pd = find_partial_die_in_comp_unit (offset, per_cu->cu); | |
13975 | } | |
13976 | ||
13977 | if (pd == NULL) | |
13978 | internal_error (__FILE__, __LINE__, | |
3e43a32a MS |
13979 | _("could not find partial DIE 0x%x " |
13980 | "in cache [from module %s]\n"), | |
b64f50a1 | 13981 | offset.sect_off, bfd_get_filename (objfile->obfd)); |
5afb4e99 | 13982 | return pd; |
72bf9492 DJ |
13983 | } |
13984 | ||
abc72ce4 DE |
13985 | /* See if we can figure out if the class lives in a namespace. We do |
13986 | this by looking for a member function; its demangled name will | |
13987 | contain namespace info, if there is any. */ | |
13988 | ||
13989 | static void | |
13990 | guess_partial_die_structure_name (struct partial_die_info *struct_pdi, | |
13991 | struct dwarf2_cu *cu) | |
13992 | { | |
13993 | /* NOTE: carlton/2003-10-07: Getting the info this way changes | |
13994 | what template types look like, because the demangler | |
13995 | frequently doesn't give the same name as the debug info. We | |
13996 | could fix this by only using the demangled name to get the | |
13997 | prefix (but see comment in read_structure_type). */ | |
13998 | ||
13999 | struct partial_die_info *real_pdi; | |
14000 | struct partial_die_info *child_pdi; | |
14001 | ||
14002 | /* If this DIE (this DIE's specification, if any) has a parent, then | |
14003 | we should not do this. We'll prepend the parent's fully qualified | |
14004 | name when we create the partial symbol. */ | |
14005 | ||
14006 | real_pdi = struct_pdi; | |
14007 | while (real_pdi->has_specification) | |
36586728 TT |
14008 | real_pdi = find_partial_die (real_pdi->spec_offset, |
14009 | real_pdi->spec_is_dwz, cu); | |
abc72ce4 DE |
14010 | |
14011 | if (real_pdi->die_parent != NULL) | |
14012 | return; | |
14013 | ||
14014 | for (child_pdi = struct_pdi->die_child; | |
14015 | child_pdi != NULL; | |
14016 | child_pdi = child_pdi->die_sibling) | |
14017 | { | |
14018 | if (child_pdi->tag == DW_TAG_subprogram | |
14019 | && child_pdi->linkage_name != NULL) | |
14020 | { | |
14021 | char *actual_class_name | |
14022 | = language_class_name_from_physname (cu->language_defn, | |
14023 | child_pdi->linkage_name); | |
14024 | if (actual_class_name != NULL) | |
14025 | { | |
14026 | struct_pdi->name | |
10f0c4bb TT |
14027 | = obstack_copy0 (&cu->objfile->objfile_obstack, |
14028 | actual_class_name, | |
14029 | strlen (actual_class_name)); | |
abc72ce4 DE |
14030 | xfree (actual_class_name); |
14031 | } | |
14032 | break; | |
14033 | } | |
14034 | } | |
14035 | } | |
14036 | ||
72bf9492 DJ |
14037 | /* Adjust PART_DIE before generating a symbol for it. This function |
14038 | may set the is_external flag or change the DIE's name. */ | |
14039 | ||
14040 | static void | |
14041 | fixup_partial_die (struct partial_die_info *part_die, | |
14042 | struct dwarf2_cu *cu) | |
14043 | { | |
abc72ce4 DE |
14044 | /* Once we've fixed up a die, there's no point in doing so again. |
14045 | This also avoids a memory leak if we were to call | |
14046 | guess_partial_die_structure_name multiple times. */ | |
14047 | if (part_die->fixup_called) | |
14048 | return; | |
14049 | ||
72bf9492 DJ |
14050 | /* If we found a reference attribute and the DIE has no name, try |
14051 | to find a name in the referred to DIE. */ | |
14052 | ||
14053 | if (part_die->name == NULL && part_die->has_specification) | |
14054 | { | |
14055 | struct partial_die_info *spec_die; | |
72bf9492 | 14056 | |
36586728 TT |
14057 | spec_die = find_partial_die (part_die->spec_offset, |
14058 | part_die->spec_is_dwz, cu); | |
72bf9492 | 14059 | |
10b3939b | 14060 | fixup_partial_die (spec_die, cu); |
72bf9492 DJ |
14061 | |
14062 | if (spec_die->name) | |
14063 | { | |
14064 | part_die->name = spec_die->name; | |
14065 | ||
14066 | /* Copy DW_AT_external attribute if it is set. */ | |
14067 | if (spec_die->is_external) | |
14068 | part_die->is_external = spec_die->is_external; | |
14069 | } | |
14070 | } | |
14071 | ||
14072 | /* Set default names for some unnamed DIEs. */ | |
72bf9492 DJ |
14073 | |
14074 | if (part_die->name == NULL && part_die->tag == DW_TAG_namespace) | |
2b1dbab0 | 14075 | part_die->name = CP_ANONYMOUS_NAMESPACE_STR; |
72bf9492 | 14076 | |
abc72ce4 DE |
14077 | /* If there is no parent die to provide a namespace, and there are |
14078 | children, see if we can determine the namespace from their linkage | |
122d1940 | 14079 | name. */ |
abc72ce4 | 14080 | if (cu->language == language_cplus |
8b70b953 | 14081 | && !VEC_empty (dwarf2_section_info_def, dwarf2_per_objfile->types) |
abc72ce4 DE |
14082 | && part_die->die_parent == NULL |
14083 | && part_die->has_children | |
14084 | && (part_die->tag == DW_TAG_class_type | |
14085 | || part_die->tag == DW_TAG_structure_type | |
14086 | || part_die->tag == DW_TAG_union_type)) | |
14087 | guess_partial_die_structure_name (part_die, cu); | |
14088 | ||
53832f31 TT |
14089 | /* GCC might emit a nameless struct or union that has a linkage |
14090 | name. See http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
14091 | if (part_die->name == NULL | |
96408a79 SA |
14092 | && (part_die->tag == DW_TAG_class_type |
14093 | || part_die->tag == DW_TAG_interface_type | |
14094 | || part_die->tag == DW_TAG_structure_type | |
14095 | || part_die->tag == DW_TAG_union_type) | |
53832f31 TT |
14096 | && part_die->linkage_name != NULL) |
14097 | { | |
14098 | char *demangled; | |
14099 | ||
14100 | demangled = cplus_demangle (part_die->linkage_name, DMGL_TYPES); | |
14101 | if (demangled) | |
14102 | { | |
96408a79 SA |
14103 | const char *base; |
14104 | ||
14105 | /* Strip any leading namespaces/classes, keep only the base name. | |
14106 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
14107 | base = strrchr (demangled, ':'); | |
14108 | if (base && base > demangled && base[-1] == ':') | |
14109 | base++; | |
14110 | else | |
14111 | base = demangled; | |
14112 | ||
10f0c4bb TT |
14113 | part_die->name = obstack_copy0 (&cu->objfile->objfile_obstack, |
14114 | base, strlen (base)); | |
53832f31 TT |
14115 | xfree (demangled); |
14116 | } | |
14117 | } | |
14118 | ||
abc72ce4 | 14119 | part_die->fixup_called = 1; |
72bf9492 DJ |
14120 | } |
14121 | ||
a8329558 | 14122 | /* Read an attribute value described by an attribute form. */ |
c906108c | 14123 | |
fe1b8b76 | 14124 | static gdb_byte * |
dee91e82 DE |
14125 | read_attribute_value (const struct die_reader_specs *reader, |
14126 | struct attribute *attr, unsigned form, | |
14127 | gdb_byte *info_ptr) | |
c906108c | 14128 | { |
dee91e82 DE |
14129 | struct dwarf2_cu *cu = reader->cu; |
14130 | bfd *abfd = reader->abfd; | |
e7c27a73 | 14131 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
14132 | unsigned int bytes_read; |
14133 | struct dwarf_block *blk; | |
14134 | ||
a8329558 KW |
14135 | attr->form = form; |
14136 | switch (form) | |
c906108c | 14137 | { |
c906108c | 14138 | case DW_FORM_ref_addr: |
ae411497 | 14139 | if (cu->header.version == 2) |
4568ecf9 | 14140 | DW_UNSND (attr) = read_address (abfd, info_ptr, cu, &bytes_read); |
ae411497 | 14141 | else |
4568ecf9 DE |
14142 | DW_UNSND (attr) = read_offset (abfd, info_ptr, |
14143 | &cu->header, &bytes_read); | |
ae411497 TT |
14144 | info_ptr += bytes_read; |
14145 | break; | |
36586728 TT |
14146 | case DW_FORM_GNU_ref_alt: |
14147 | DW_UNSND (attr) = read_offset (abfd, info_ptr, &cu->header, &bytes_read); | |
14148 | info_ptr += bytes_read; | |
14149 | break; | |
ae411497 | 14150 | case DW_FORM_addr: |
e7c27a73 | 14151 | DW_ADDR (attr) = read_address (abfd, info_ptr, cu, &bytes_read); |
107d2387 | 14152 | info_ptr += bytes_read; |
c906108c SS |
14153 | break; |
14154 | case DW_FORM_block2: | |
7b5a2f43 | 14155 | blk = dwarf_alloc_block (cu); |
c906108c SS |
14156 | blk->size = read_2_bytes (abfd, info_ptr); |
14157 | info_ptr += 2; | |
14158 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
14159 | info_ptr += blk->size; | |
14160 | DW_BLOCK (attr) = blk; | |
14161 | break; | |
14162 | case DW_FORM_block4: | |
7b5a2f43 | 14163 | blk = dwarf_alloc_block (cu); |
c906108c SS |
14164 | blk->size = read_4_bytes (abfd, info_ptr); |
14165 | info_ptr += 4; | |
14166 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
14167 | info_ptr += blk->size; | |
14168 | DW_BLOCK (attr) = blk; | |
14169 | break; | |
14170 | case DW_FORM_data2: | |
14171 | DW_UNSND (attr) = read_2_bytes (abfd, info_ptr); | |
14172 | info_ptr += 2; | |
14173 | break; | |
14174 | case DW_FORM_data4: | |
14175 | DW_UNSND (attr) = read_4_bytes (abfd, info_ptr); | |
14176 | info_ptr += 4; | |
14177 | break; | |
14178 | case DW_FORM_data8: | |
14179 | DW_UNSND (attr) = read_8_bytes (abfd, info_ptr); | |
14180 | info_ptr += 8; | |
14181 | break; | |
2dc7f7b3 TT |
14182 | case DW_FORM_sec_offset: |
14183 | DW_UNSND (attr) = read_offset (abfd, info_ptr, &cu->header, &bytes_read); | |
14184 | info_ptr += bytes_read; | |
14185 | break; | |
c906108c | 14186 | case DW_FORM_string: |
9b1c24c8 | 14187 | DW_STRING (attr) = read_direct_string (abfd, info_ptr, &bytes_read); |
8285870a | 14188 | DW_STRING_IS_CANONICAL (attr) = 0; |
c906108c SS |
14189 | info_ptr += bytes_read; |
14190 | break; | |
4bdf3d34 | 14191 | case DW_FORM_strp: |
36586728 TT |
14192 | if (!cu->per_cu->is_dwz) |
14193 | { | |
14194 | DW_STRING (attr) = read_indirect_string (abfd, info_ptr, cu_header, | |
14195 | &bytes_read); | |
14196 | DW_STRING_IS_CANONICAL (attr) = 0; | |
14197 | info_ptr += bytes_read; | |
14198 | break; | |
14199 | } | |
14200 | /* FALLTHROUGH */ | |
14201 | case DW_FORM_GNU_strp_alt: | |
14202 | { | |
14203 | struct dwz_file *dwz = dwarf2_get_dwz_file (); | |
14204 | LONGEST str_offset = read_offset (abfd, info_ptr, cu_header, | |
14205 | &bytes_read); | |
14206 | ||
14207 | DW_STRING (attr) = read_indirect_string_from_dwz (dwz, str_offset); | |
14208 | DW_STRING_IS_CANONICAL (attr) = 0; | |
14209 | info_ptr += bytes_read; | |
14210 | } | |
4bdf3d34 | 14211 | break; |
2dc7f7b3 | 14212 | case DW_FORM_exprloc: |
c906108c | 14213 | case DW_FORM_block: |
7b5a2f43 | 14214 | blk = dwarf_alloc_block (cu); |
c906108c SS |
14215 | blk->size = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
14216 | info_ptr += bytes_read; | |
14217 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
14218 | info_ptr += blk->size; | |
14219 | DW_BLOCK (attr) = blk; | |
14220 | break; | |
14221 | case DW_FORM_block1: | |
7b5a2f43 | 14222 | blk = dwarf_alloc_block (cu); |
c906108c SS |
14223 | blk->size = read_1_byte (abfd, info_ptr); |
14224 | info_ptr += 1; | |
14225 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
14226 | info_ptr += blk->size; | |
14227 | DW_BLOCK (attr) = blk; | |
14228 | break; | |
14229 | case DW_FORM_data1: | |
14230 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
14231 | info_ptr += 1; | |
14232 | break; | |
14233 | case DW_FORM_flag: | |
14234 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
14235 | info_ptr += 1; | |
14236 | break; | |
2dc7f7b3 TT |
14237 | case DW_FORM_flag_present: |
14238 | DW_UNSND (attr) = 1; | |
14239 | break; | |
c906108c SS |
14240 | case DW_FORM_sdata: |
14241 | DW_SND (attr) = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
14242 | info_ptr += bytes_read; | |
14243 | break; | |
14244 | case DW_FORM_udata: | |
14245 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
14246 | info_ptr += bytes_read; | |
14247 | break; | |
14248 | case DW_FORM_ref1: | |
4568ecf9 DE |
14249 | DW_UNSND (attr) = (cu->header.offset.sect_off |
14250 | + read_1_byte (abfd, info_ptr)); | |
c906108c SS |
14251 | info_ptr += 1; |
14252 | break; | |
14253 | case DW_FORM_ref2: | |
4568ecf9 DE |
14254 | DW_UNSND (attr) = (cu->header.offset.sect_off |
14255 | + read_2_bytes (abfd, info_ptr)); | |
c906108c SS |
14256 | info_ptr += 2; |
14257 | break; | |
14258 | case DW_FORM_ref4: | |
4568ecf9 DE |
14259 | DW_UNSND (attr) = (cu->header.offset.sect_off |
14260 | + read_4_bytes (abfd, info_ptr)); | |
c906108c SS |
14261 | info_ptr += 4; |
14262 | break; | |
613e1657 | 14263 | case DW_FORM_ref8: |
4568ecf9 DE |
14264 | DW_UNSND (attr) = (cu->header.offset.sect_off |
14265 | + read_8_bytes (abfd, info_ptr)); | |
613e1657 KB |
14266 | info_ptr += 8; |
14267 | break; | |
55f1336d | 14268 | case DW_FORM_ref_sig8: |
348e048f DE |
14269 | /* Convert the signature to something we can record in DW_UNSND |
14270 | for later lookup. | |
14271 | NOTE: This is NULL if the type wasn't found. */ | |
14272 | DW_SIGNATURED_TYPE (attr) = | |
e319fa28 | 14273 | lookup_signatured_type (read_8_bytes (abfd, info_ptr)); |
348e048f DE |
14274 | info_ptr += 8; |
14275 | break; | |
c906108c | 14276 | case DW_FORM_ref_udata: |
4568ecf9 DE |
14277 | DW_UNSND (attr) = (cu->header.offset.sect_off |
14278 | + read_unsigned_leb128 (abfd, info_ptr, &bytes_read)); | |
c906108c SS |
14279 | info_ptr += bytes_read; |
14280 | break; | |
c906108c | 14281 | case DW_FORM_indirect: |
a8329558 KW |
14282 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
14283 | info_ptr += bytes_read; | |
dee91e82 | 14284 | info_ptr = read_attribute_value (reader, attr, form, info_ptr); |
a8329558 | 14285 | break; |
3019eac3 DE |
14286 | case DW_FORM_GNU_addr_index: |
14287 | if (reader->dwo_file == NULL) | |
14288 | { | |
14289 | /* For now flag a hard error. | |
14290 | Later we can turn this into a complaint. */ | |
14291 | error (_("Dwarf Error: %s found in non-DWO CU [in module %s]"), | |
14292 | dwarf_form_name (form), | |
14293 | bfd_get_filename (abfd)); | |
14294 | } | |
14295 | DW_ADDR (attr) = read_addr_index_from_leb128 (cu, info_ptr, &bytes_read); | |
14296 | info_ptr += bytes_read; | |
14297 | break; | |
14298 | case DW_FORM_GNU_str_index: | |
14299 | if (reader->dwo_file == NULL) | |
14300 | { | |
14301 | /* For now flag a hard error. | |
14302 | Later we can turn this into a complaint if warranted. */ | |
14303 | error (_("Dwarf Error: %s found in non-DWO CU [in module %s]"), | |
14304 | dwarf_form_name (form), | |
14305 | bfd_get_filename (abfd)); | |
14306 | } | |
14307 | { | |
14308 | ULONGEST str_index = | |
14309 | read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
14310 | ||
14311 | DW_STRING (attr) = read_str_index (reader, cu, str_index); | |
14312 | DW_STRING_IS_CANONICAL (attr) = 0; | |
14313 | info_ptr += bytes_read; | |
14314 | } | |
14315 | break; | |
c906108c | 14316 | default: |
8a3fe4f8 | 14317 | error (_("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]"), |
659b0389 ML |
14318 | dwarf_form_name (form), |
14319 | bfd_get_filename (abfd)); | |
c906108c | 14320 | } |
28e94949 | 14321 | |
36586728 TT |
14322 | /* Super hack. */ |
14323 | if (cu->per_cu->is_dwz && is_ref_attr (attr)) | |
14324 | attr->form = DW_FORM_GNU_ref_alt; | |
14325 | ||
28e94949 JB |
14326 | /* We have seen instances where the compiler tried to emit a byte |
14327 | size attribute of -1 which ended up being encoded as an unsigned | |
14328 | 0xffffffff. Although 0xffffffff is technically a valid size value, | |
14329 | an object of this size seems pretty unlikely so we can relatively | |
14330 | safely treat these cases as if the size attribute was invalid and | |
14331 | treat them as zero by default. */ | |
14332 | if (attr->name == DW_AT_byte_size | |
14333 | && form == DW_FORM_data4 | |
14334 | && DW_UNSND (attr) >= 0xffffffff) | |
01c66ae6 JB |
14335 | { |
14336 | complaint | |
14337 | (&symfile_complaints, | |
43bbcdc2 PH |
14338 | _("Suspicious DW_AT_byte_size value treated as zero instead of %s"), |
14339 | hex_string (DW_UNSND (attr))); | |
01c66ae6 JB |
14340 | DW_UNSND (attr) = 0; |
14341 | } | |
28e94949 | 14342 | |
c906108c SS |
14343 | return info_ptr; |
14344 | } | |
14345 | ||
a8329558 KW |
14346 | /* Read an attribute described by an abbreviated attribute. */ |
14347 | ||
fe1b8b76 | 14348 | static gdb_byte * |
dee91e82 DE |
14349 | read_attribute (const struct die_reader_specs *reader, |
14350 | struct attribute *attr, struct attr_abbrev *abbrev, | |
14351 | gdb_byte *info_ptr) | |
a8329558 KW |
14352 | { |
14353 | attr->name = abbrev->name; | |
dee91e82 | 14354 | return read_attribute_value (reader, attr, abbrev->form, info_ptr); |
a8329558 KW |
14355 | } |
14356 | ||
0963b4bd | 14357 | /* Read dwarf information from a buffer. */ |
c906108c SS |
14358 | |
14359 | static unsigned int | |
a1855c1d | 14360 | read_1_byte (bfd *abfd, const gdb_byte *buf) |
c906108c | 14361 | { |
fe1b8b76 | 14362 | return bfd_get_8 (abfd, buf); |
c906108c SS |
14363 | } |
14364 | ||
14365 | static int | |
a1855c1d | 14366 | read_1_signed_byte (bfd *abfd, const gdb_byte *buf) |
c906108c | 14367 | { |
fe1b8b76 | 14368 | return bfd_get_signed_8 (abfd, buf); |
c906108c SS |
14369 | } |
14370 | ||
14371 | static unsigned int | |
a1855c1d | 14372 | read_2_bytes (bfd *abfd, const gdb_byte *buf) |
c906108c | 14373 | { |
fe1b8b76 | 14374 | return bfd_get_16 (abfd, buf); |
c906108c SS |
14375 | } |
14376 | ||
21ae7a4d | 14377 | static int |
a1855c1d | 14378 | read_2_signed_bytes (bfd *abfd, const gdb_byte *buf) |
21ae7a4d JK |
14379 | { |
14380 | return bfd_get_signed_16 (abfd, buf); | |
14381 | } | |
14382 | ||
c906108c | 14383 | static unsigned int |
a1855c1d | 14384 | read_4_bytes (bfd *abfd, const gdb_byte *buf) |
c906108c | 14385 | { |
fe1b8b76 | 14386 | return bfd_get_32 (abfd, buf); |
c906108c SS |
14387 | } |
14388 | ||
21ae7a4d | 14389 | static int |
a1855c1d | 14390 | read_4_signed_bytes (bfd *abfd, const gdb_byte *buf) |
21ae7a4d JK |
14391 | { |
14392 | return bfd_get_signed_32 (abfd, buf); | |
14393 | } | |
14394 | ||
93311388 | 14395 | static ULONGEST |
a1855c1d | 14396 | read_8_bytes (bfd *abfd, const gdb_byte *buf) |
c906108c | 14397 | { |
fe1b8b76 | 14398 | return bfd_get_64 (abfd, buf); |
c906108c SS |
14399 | } |
14400 | ||
14401 | static CORE_ADDR | |
fe1b8b76 | 14402 | read_address (bfd *abfd, gdb_byte *buf, struct dwarf2_cu *cu, |
891d2f0b | 14403 | unsigned int *bytes_read) |
c906108c | 14404 | { |
e7c27a73 | 14405 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
14406 | CORE_ADDR retval = 0; |
14407 | ||
107d2387 | 14408 | if (cu_header->signed_addr_p) |
c906108c | 14409 | { |
107d2387 AC |
14410 | switch (cu_header->addr_size) |
14411 | { | |
14412 | case 2: | |
fe1b8b76 | 14413 | retval = bfd_get_signed_16 (abfd, buf); |
107d2387 AC |
14414 | break; |
14415 | case 4: | |
fe1b8b76 | 14416 | retval = bfd_get_signed_32 (abfd, buf); |
107d2387 AC |
14417 | break; |
14418 | case 8: | |
fe1b8b76 | 14419 | retval = bfd_get_signed_64 (abfd, buf); |
107d2387 AC |
14420 | break; |
14421 | default: | |
8e65ff28 | 14422 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 14423 | _("read_address: bad switch, signed [in module %s]"), |
659b0389 | 14424 | bfd_get_filename (abfd)); |
107d2387 AC |
14425 | } |
14426 | } | |
14427 | else | |
14428 | { | |
14429 | switch (cu_header->addr_size) | |
14430 | { | |
14431 | case 2: | |
fe1b8b76 | 14432 | retval = bfd_get_16 (abfd, buf); |
107d2387 AC |
14433 | break; |
14434 | case 4: | |
fe1b8b76 | 14435 | retval = bfd_get_32 (abfd, buf); |
107d2387 AC |
14436 | break; |
14437 | case 8: | |
fe1b8b76 | 14438 | retval = bfd_get_64 (abfd, buf); |
107d2387 AC |
14439 | break; |
14440 | default: | |
8e65ff28 | 14441 | internal_error (__FILE__, __LINE__, |
a73c6dcd MS |
14442 | _("read_address: bad switch, " |
14443 | "unsigned [in module %s]"), | |
659b0389 | 14444 | bfd_get_filename (abfd)); |
107d2387 | 14445 | } |
c906108c | 14446 | } |
64367e0a | 14447 | |
107d2387 AC |
14448 | *bytes_read = cu_header->addr_size; |
14449 | return retval; | |
c906108c SS |
14450 | } |
14451 | ||
f7ef9339 | 14452 | /* Read the initial length from a section. The (draft) DWARF 3 |
613e1657 KB |
14453 | specification allows the initial length to take up either 4 bytes |
14454 | or 12 bytes. If the first 4 bytes are 0xffffffff, then the next 8 | |
14455 | bytes describe the length and all offsets will be 8 bytes in length | |
14456 | instead of 4. | |
14457 | ||
f7ef9339 KB |
14458 | An older, non-standard 64-bit format is also handled by this |
14459 | function. The older format in question stores the initial length | |
14460 | as an 8-byte quantity without an escape value. Lengths greater | |
14461 | than 2^32 aren't very common which means that the initial 4 bytes | |
14462 | is almost always zero. Since a length value of zero doesn't make | |
14463 | sense for the 32-bit format, this initial zero can be considered to | |
14464 | be an escape value which indicates the presence of the older 64-bit | |
14465 | format. As written, the code can't detect (old format) lengths | |
917c78fc MK |
14466 | greater than 4GB. If it becomes necessary to handle lengths |
14467 | somewhat larger than 4GB, we could allow other small values (such | |
14468 | as the non-sensical values of 1, 2, and 3) to also be used as | |
14469 | escape values indicating the presence of the old format. | |
f7ef9339 | 14470 | |
917c78fc MK |
14471 | The value returned via bytes_read should be used to increment the |
14472 | relevant pointer after calling read_initial_length(). | |
c764a876 | 14473 | |
613e1657 KB |
14474 | [ Note: read_initial_length() and read_offset() are based on the |
14475 | document entitled "DWARF Debugging Information Format", revision | |
f7ef9339 | 14476 | 3, draft 8, dated November 19, 2001. This document was obtained |
613e1657 KB |
14477 | from: |
14478 | ||
f7ef9339 | 14479 | http://reality.sgiweb.org/davea/dwarf3-draft8-011125.pdf |
6e70227d | 14480 | |
613e1657 KB |
14481 | This document is only a draft and is subject to change. (So beware.) |
14482 | ||
f7ef9339 | 14483 | Details regarding the older, non-standard 64-bit format were |
917c78fc MK |
14484 | determined empirically by examining 64-bit ELF files produced by |
14485 | the SGI toolchain on an IRIX 6.5 machine. | |
f7ef9339 KB |
14486 | |
14487 | - Kevin, July 16, 2002 | |
613e1657 KB |
14488 | ] */ |
14489 | ||
14490 | static LONGEST | |
c764a876 | 14491 | read_initial_length (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read) |
613e1657 | 14492 | { |
fe1b8b76 | 14493 | LONGEST length = bfd_get_32 (abfd, buf); |
613e1657 | 14494 | |
dd373385 | 14495 | if (length == 0xffffffff) |
613e1657 | 14496 | { |
fe1b8b76 | 14497 | length = bfd_get_64 (abfd, buf + 4); |
613e1657 | 14498 | *bytes_read = 12; |
613e1657 | 14499 | } |
dd373385 | 14500 | else if (length == 0) |
f7ef9339 | 14501 | { |
dd373385 | 14502 | /* Handle the (non-standard) 64-bit DWARF2 format used by IRIX. */ |
fe1b8b76 | 14503 | length = bfd_get_64 (abfd, buf); |
f7ef9339 | 14504 | *bytes_read = 8; |
f7ef9339 | 14505 | } |
613e1657 KB |
14506 | else |
14507 | { | |
14508 | *bytes_read = 4; | |
613e1657 KB |
14509 | } |
14510 | ||
c764a876 DE |
14511 | return length; |
14512 | } | |
dd373385 | 14513 | |
c764a876 DE |
14514 | /* Cover function for read_initial_length. |
14515 | Returns the length of the object at BUF, and stores the size of the | |
14516 | initial length in *BYTES_READ and stores the size that offsets will be in | |
14517 | *OFFSET_SIZE. | |
14518 | If the initial length size is not equivalent to that specified in | |
14519 | CU_HEADER then issue a complaint. | |
14520 | This is useful when reading non-comp-unit headers. */ | |
dd373385 | 14521 | |
c764a876 DE |
14522 | static LONGEST |
14523 | read_checked_initial_length_and_offset (bfd *abfd, gdb_byte *buf, | |
14524 | const struct comp_unit_head *cu_header, | |
14525 | unsigned int *bytes_read, | |
14526 | unsigned int *offset_size) | |
14527 | { | |
14528 | LONGEST length = read_initial_length (abfd, buf, bytes_read); | |
14529 | ||
14530 | gdb_assert (cu_header->initial_length_size == 4 | |
14531 | || cu_header->initial_length_size == 8 | |
14532 | || cu_header->initial_length_size == 12); | |
14533 | ||
14534 | if (cu_header->initial_length_size != *bytes_read) | |
14535 | complaint (&symfile_complaints, | |
14536 | _("intermixed 32-bit and 64-bit DWARF sections")); | |
dd373385 | 14537 | |
c764a876 | 14538 | *offset_size = (*bytes_read == 4) ? 4 : 8; |
dd373385 | 14539 | return length; |
613e1657 KB |
14540 | } |
14541 | ||
14542 | /* Read an offset from the data stream. The size of the offset is | |
917c78fc | 14543 | given by cu_header->offset_size. */ |
613e1657 KB |
14544 | |
14545 | static LONGEST | |
fe1b8b76 | 14546 | read_offset (bfd *abfd, gdb_byte *buf, const struct comp_unit_head *cu_header, |
891d2f0b | 14547 | unsigned int *bytes_read) |
c764a876 DE |
14548 | { |
14549 | LONGEST offset = read_offset_1 (abfd, buf, cu_header->offset_size); | |
9a619af0 | 14550 | |
c764a876 DE |
14551 | *bytes_read = cu_header->offset_size; |
14552 | return offset; | |
14553 | } | |
14554 | ||
14555 | /* Read an offset from the data stream. */ | |
14556 | ||
14557 | static LONGEST | |
14558 | read_offset_1 (bfd *abfd, gdb_byte *buf, unsigned int offset_size) | |
613e1657 KB |
14559 | { |
14560 | LONGEST retval = 0; | |
14561 | ||
c764a876 | 14562 | switch (offset_size) |
613e1657 KB |
14563 | { |
14564 | case 4: | |
fe1b8b76 | 14565 | retval = bfd_get_32 (abfd, buf); |
613e1657 KB |
14566 | break; |
14567 | case 8: | |
fe1b8b76 | 14568 | retval = bfd_get_64 (abfd, buf); |
613e1657 KB |
14569 | break; |
14570 | default: | |
8e65ff28 | 14571 | internal_error (__FILE__, __LINE__, |
c764a876 | 14572 | _("read_offset_1: bad switch [in module %s]"), |
659b0389 | 14573 | bfd_get_filename (abfd)); |
613e1657 KB |
14574 | } |
14575 | ||
917c78fc | 14576 | return retval; |
613e1657 KB |
14577 | } |
14578 | ||
fe1b8b76 JB |
14579 | static gdb_byte * |
14580 | read_n_bytes (bfd *abfd, gdb_byte *buf, unsigned int size) | |
c906108c SS |
14581 | { |
14582 | /* If the size of a host char is 8 bits, we can return a pointer | |
14583 | to the buffer, otherwise we have to copy the data to a buffer | |
14584 | allocated on the temporary obstack. */ | |
4bdf3d34 | 14585 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c | 14586 | return buf; |
c906108c SS |
14587 | } |
14588 | ||
14589 | static char * | |
9b1c24c8 | 14590 | read_direct_string (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read_ptr) |
c906108c SS |
14591 | { |
14592 | /* If the size of a host char is 8 bits, we can return a pointer | |
14593 | to the string, otherwise we have to copy the string to a buffer | |
14594 | allocated on the temporary obstack. */ | |
4bdf3d34 | 14595 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c SS |
14596 | if (*buf == '\0') |
14597 | { | |
14598 | *bytes_read_ptr = 1; | |
14599 | return NULL; | |
14600 | } | |
fe1b8b76 JB |
14601 | *bytes_read_ptr = strlen ((char *) buf) + 1; |
14602 | return (char *) buf; | |
4bdf3d34 JJ |
14603 | } |
14604 | ||
14605 | static char * | |
cf2c3c16 | 14606 | read_indirect_string_at_offset (bfd *abfd, LONGEST str_offset) |
4bdf3d34 | 14607 | { |
be391dca | 14608 | dwarf2_read_section (dwarf2_per_objfile->objfile, &dwarf2_per_objfile->str); |
dce234bc | 14609 | if (dwarf2_per_objfile->str.buffer == NULL) |
cf2c3c16 TT |
14610 | error (_("DW_FORM_strp used without .debug_str section [in module %s]"), |
14611 | bfd_get_filename (abfd)); | |
dce234bc | 14612 | if (str_offset >= dwarf2_per_objfile->str.size) |
cf2c3c16 TT |
14613 | error (_("DW_FORM_strp pointing outside of " |
14614 | ".debug_str section [in module %s]"), | |
14615 | bfd_get_filename (abfd)); | |
4bdf3d34 | 14616 | gdb_assert (HOST_CHAR_BIT == 8); |
dce234bc | 14617 | if (dwarf2_per_objfile->str.buffer[str_offset] == '\0') |
4bdf3d34 | 14618 | return NULL; |
dce234bc | 14619 | return (char *) (dwarf2_per_objfile->str.buffer + str_offset); |
c906108c SS |
14620 | } |
14621 | ||
36586728 TT |
14622 | /* Read a string at offset STR_OFFSET in the .debug_str section from |
14623 | the .dwz file DWZ. Throw an error if the offset is too large. If | |
14624 | the string consists of a single NUL byte, return NULL; otherwise | |
14625 | return a pointer to the string. */ | |
14626 | ||
14627 | static char * | |
14628 | read_indirect_string_from_dwz (struct dwz_file *dwz, LONGEST str_offset) | |
14629 | { | |
14630 | dwarf2_read_section (dwarf2_per_objfile->objfile, &dwz->str); | |
14631 | ||
14632 | if (dwz->str.buffer == NULL) | |
14633 | error (_("DW_FORM_GNU_strp_alt used without .debug_str " | |
14634 | "section [in module %s]"), | |
14635 | bfd_get_filename (dwz->dwz_bfd)); | |
14636 | if (str_offset >= dwz->str.size) | |
14637 | error (_("DW_FORM_GNU_strp_alt pointing outside of " | |
14638 | ".debug_str section [in module %s]"), | |
14639 | bfd_get_filename (dwz->dwz_bfd)); | |
14640 | gdb_assert (HOST_CHAR_BIT == 8); | |
14641 | if (dwz->str.buffer[str_offset] == '\0') | |
14642 | return NULL; | |
14643 | return (char *) (dwz->str.buffer + str_offset); | |
14644 | } | |
14645 | ||
cf2c3c16 TT |
14646 | static char * |
14647 | read_indirect_string (bfd *abfd, gdb_byte *buf, | |
14648 | const struct comp_unit_head *cu_header, | |
14649 | unsigned int *bytes_read_ptr) | |
14650 | { | |
14651 | LONGEST str_offset = read_offset (abfd, buf, cu_header, bytes_read_ptr); | |
14652 | ||
14653 | return read_indirect_string_at_offset (abfd, str_offset); | |
14654 | } | |
14655 | ||
12df843f | 14656 | static ULONGEST |
fe1b8b76 | 14657 | read_unsigned_leb128 (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read_ptr) |
c906108c | 14658 | { |
12df843f | 14659 | ULONGEST result; |
ce5d95e1 | 14660 | unsigned int num_read; |
c906108c SS |
14661 | int i, shift; |
14662 | unsigned char byte; | |
14663 | ||
14664 | result = 0; | |
14665 | shift = 0; | |
14666 | num_read = 0; | |
14667 | i = 0; | |
14668 | while (1) | |
14669 | { | |
fe1b8b76 | 14670 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
14671 | buf++; |
14672 | num_read++; | |
12df843f | 14673 | result |= ((ULONGEST) (byte & 127) << shift); |
c906108c SS |
14674 | if ((byte & 128) == 0) |
14675 | { | |
14676 | break; | |
14677 | } | |
14678 | shift += 7; | |
14679 | } | |
14680 | *bytes_read_ptr = num_read; | |
14681 | return result; | |
14682 | } | |
14683 | ||
12df843f | 14684 | static LONGEST |
fe1b8b76 | 14685 | read_signed_leb128 (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read_ptr) |
c906108c | 14686 | { |
12df843f | 14687 | LONGEST result; |
77e0b926 | 14688 | int i, shift, num_read; |
c906108c SS |
14689 | unsigned char byte; |
14690 | ||
14691 | result = 0; | |
14692 | shift = 0; | |
c906108c SS |
14693 | num_read = 0; |
14694 | i = 0; | |
14695 | while (1) | |
14696 | { | |
fe1b8b76 | 14697 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
14698 | buf++; |
14699 | num_read++; | |
12df843f | 14700 | result |= ((LONGEST) (byte & 127) << shift); |
c906108c SS |
14701 | shift += 7; |
14702 | if ((byte & 128) == 0) | |
14703 | { | |
14704 | break; | |
14705 | } | |
14706 | } | |
77e0b926 | 14707 | if ((shift < 8 * sizeof (result)) && (byte & 0x40)) |
12df843f | 14708 | result |= -(((LONGEST) 1) << shift); |
c906108c SS |
14709 | *bytes_read_ptr = num_read; |
14710 | return result; | |
14711 | } | |
14712 | ||
3019eac3 DE |
14713 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. |
14714 | ADDR_BASE is the DW_AT_GNU_addr_base attribute or zero. | |
14715 | ADDR_SIZE is the size of addresses from the CU header. */ | |
14716 | ||
14717 | static CORE_ADDR | |
14718 | read_addr_index_1 (unsigned int addr_index, ULONGEST addr_base, int addr_size) | |
14719 | { | |
14720 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
14721 | bfd *abfd = objfile->obfd; | |
14722 | const gdb_byte *info_ptr; | |
14723 | ||
14724 | dwarf2_read_section (objfile, &dwarf2_per_objfile->addr); | |
14725 | if (dwarf2_per_objfile->addr.buffer == NULL) | |
14726 | error (_("DW_FORM_addr_index used without .debug_addr section [in module %s]"), | |
14727 | objfile->name); | |
14728 | if (addr_base + addr_index * addr_size >= dwarf2_per_objfile->addr.size) | |
14729 | error (_("DW_FORM_addr_index pointing outside of " | |
14730 | ".debug_addr section [in module %s]"), | |
14731 | objfile->name); | |
14732 | info_ptr = (dwarf2_per_objfile->addr.buffer | |
14733 | + addr_base + addr_index * addr_size); | |
14734 | if (addr_size == 4) | |
14735 | return bfd_get_32 (abfd, info_ptr); | |
14736 | else | |
14737 | return bfd_get_64 (abfd, info_ptr); | |
14738 | } | |
14739 | ||
14740 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. */ | |
14741 | ||
14742 | static CORE_ADDR | |
14743 | read_addr_index (struct dwarf2_cu *cu, unsigned int addr_index) | |
14744 | { | |
14745 | return read_addr_index_1 (addr_index, cu->addr_base, cu->header.addr_size); | |
14746 | } | |
14747 | ||
14748 | /* Given a pointer to an leb128 value, fetch the value from .debug_addr. */ | |
14749 | ||
14750 | static CORE_ADDR | |
14751 | read_addr_index_from_leb128 (struct dwarf2_cu *cu, gdb_byte *info_ptr, | |
14752 | unsigned int *bytes_read) | |
14753 | { | |
14754 | bfd *abfd = cu->objfile->obfd; | |
14755 | unsigned int addr_index = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
14756 | ||
14757 | return read_addr_index (cu, addr_index); | |
14758 | } | |
14759 | ||
14760 | /* Data structure to pass results from dwarf2_read_addr_index_reader | |
14761 | back to dwarf2_read_addr_index. */ | |
14762 | ||
14763 | struct dwarf2_read_addr_index_data | |
14764 | { | |
14765 | ULONGEST addr_base; | |
14766 | int addr_size; | |
14767 | }; | |
14768 | ||
14769 | /* die_reader_func for dwarf2_read_addr_index. */ | |
14770 | ||
14771 | static void | |
14772 | dwarf2_read_addr_index_reader (const struct die_reader_specs *reader, | |
14773 | gdb_byte *info_ptr, | |
14774 | struct die_info *comp_unit_die, | |
14775 | int has_children, | |
14776 | void *data) | |
14777 | { | |
14778 | struct dwarf2_cu *cu = reader->cu; | |
14779 | struct dwarf2_read_addr_index_data *aidata = | |
14780 | (struct dwarf2_read_addr_index_data *) data; | |
14781 | ||
14782 | aidata->addr_base = cu->addr_base; | |
14783 | aidata->addr_size = cu->header.addr_size; | |
14784 | } | |
14785 | ||
14786 | /* Given an index in .debug_addr, fetch the value. | |
14787 | NOTE: This can be called during dwarf expression evaluation, | |
14788 | long after the debug information has been read, and thus per_cu->cu | |
14789 | may no longer exist. */ | |
14790 | ||
14791 | CORE_ADDR | |
14792 | dwarf2_read_addr_index (struct dwarf2_per_cu_data *per_cu, | |
14793 | unsigned int addr_index) | |
14794 | { | |
14795 | struct objfile *objfile = per_cu->objfile; | |
14796 | struct dwarf2_cu *cu = per_cu->cu; | |
14797 | ULONGEST addr_base; | |
14798 | int addr_size; | |
14799 | ||
14800 | /* This is intended to be called from outside this file. */ | |
14801 | dw2_setup (objfile); | |
14802 | ||
14803 | /* We need addr_base and addr_size. | |
14804 | If we don't have PER_CU->cu, we have to get it. | |
14805 | Nasty, but the alternative is storing the needed info in PER_CU, | |
14806 | which at this point doesn't seem justified: it's not clear how frequently | |
14807 | it would get used and it would increase the size of every PER_CU. | |
14808 | Entry points like dwarf2_per_cu_addr_size do a similar thing | |
14809 | so we're not in uncharted territory here. | |
14810 | Alas we need to be a bit more complicated as addr_base is contained | |
14811 | in the DIE. | |
14812 | ||
14813 | We don't need to read the entire CU(/TU). | |
14814 | We just need the header and top level die. | |
a1b64ce1 | 14815 | |
3019eac3 | 14816 | IWBN to use the aging mechanism to let us lazily later discard the CU. |
a1b64ce1 | 14817 | For now we skip this optimization. */ |
3019eac3 DE |
14818 | |
14819 | if (cu != NULL) | |
14820 | { | |
14821 | addr_base = cu->addr_base; | |
14822 | addr_size = cu->header.addr_size; | |
14823 | } | |
14824 | else | |
14825 | { | |
14826 | struct dwarf2_read_addr_index_data aidata; | |
14827 | ||
a1b64ce1 DE |
14828 | /* Note: We can't use init_cutu_and_read_dies_simple here, |
14829 | we need addr_base. */ | |
14830 | init_cutu_and_read_dies (per_cu, NULL, 0, 0, | |
14831 | dwarf2_read_addr_index_reader, &aidata); | |
3019eac3 DE |
14832 | addr_base = aidata.addr_base; |
14833 | addr_size = aidata.addr_size; | |
14834 | } | |
14835 | ||
14836 | return read_addr_index_1 (addr_index, addr_base, addr_size); | |
14837 | } | |
14838 | ||
14839 | /* Given a DW_AT_str_index, fetch the string. */ | |
14840 | ||
14841 | static char * | |
14842 | read_str_index (const struct die_reader_specs *reader, | |
14843 | struct dwarf2_cu *cu, ULONGEST str_index) | |
14844 | { | |
14845 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
14846 | const char *dwo_name = objfile->name; | |
14847 | bfd *abfd = objfile->obfd; | |
14848 | struct dwo_sections *sections = &reader->dwo_file->sections; | |
14849 | gdb_byte *info_ptr; | |
14850 | ULONGEST str_offset; | |
14851 | ||
14852 | dwarf2_read_section (objfile, §ions->str); | |
14853 | dwarf2_read_section (objfile, §ions->str_offsets); | |
14854 | if (sections->str.buffer == NULL) | |
14855 | error (_("DW_FORM_str_index used without .debug_str.dwo section" | |
14856 | " in CU at offset 0x%lx [in module %s]"), | |
14857 | (long) cu->header.offset.sect_off, dwo_name); | |
14858 | if (sections->str_offsets.buffer == NULL) | |
14859 | error (_("DW_FORM_str_index used without .debug_str_offsets.dwo section" | |
14860 | " in CU at offset 0x%lx [in module %s]"), | |
14861 | (long) cu->header.offset.sect_off, dwo_name); | |
14862 | if (str_index * cu->header.offset_size >= sections->str_offsets.size) | |
14863 | error (_("DW_FORM_str_index pointing outside of .debug_str_offsets.dwo" | |
14864 | " section in CU at offset 0x%lx [in module %s]"), | |
14865 | (long) cu->header.offset.sect_off, dwo_name); | |
14866 | info_ptr = (sections->str_offsets.buffer | |
14867 | + str_index * cu->header.offset_size); | |
14868 | if (cu->header.offset_size == 4) | |
14869 | str_offset = bfd_get_32 (abfd, info_ptr); | |
14870 | else | |
14871 | str_offset = bfd_get_64 (abfd, info_ptr); | |
14872 | if (str_offset >= sections->str.size) | |
14873 | error (_("Offset from DW_FORM_str_index pointing outside of" | |
14874 | " .debug_str.dwo section in CU at offset 0x%lx [in module %s]"), | |
14875 | (long) cu->header.offset.sect_off, dwo_name); | |
14876 | return (char *) (sections->str.buffer + str_offset); | |
14877 | } | |
14878 | ||
3019eac3 DE |
14879 | /* Return the length of an LEB128 number in BUF. */ |
14880 | ||
14881 | static int | |
14882 | leb128_size (const gdb_byte *buf) | |
14883 | { | |
14884 | const gdb_byte *begin = buf; | |
14885 | gdb_byte byte; | |
14886 | ||
14887 | while (1) | |
14888 | { | |
14889 | byte = *buf++; | |
14890 | if ((byte & 128) == 0) | |
14891 | return buf - begin; | |
14892 | } | |
14893 | } | |
14894 | ||
c906108c | 14895 | static void |
e142c38c | 14896 | set_cu_language (unsigned int lang, struct dwarf2_cu *cu) |
c906108c SS |
14897 | { |
14898 | switch (lang) | |
14899 | { | |
14900 | case DW_LANG_C89: | |
76bee0cc | 14901 | case DW_LANG_C99: |
c906108c | 14902 | case DW_LANG_C: |
e142c38c | 14903 | cu->language = language_c; |
c906108c SS |
14904 | break; |
14905 | case DW_LANG_C_plus_plus: | |
e142c38c | 14906 | cu->language = language_cplus; |
c906108c | 14907 | break; |
6aecb9c2 JB |
14908 | case DW_LANG_D: |
14909 | cu->language = language_d; | |
14910 | break; | |
c906108c SS |
14911 | case DW_LANG_Fortran77: |
14912 | case DW_LANG_Fortran90: | |
b21b22e0 | 14913 | case DW_LANG_Fortran95: |
e142c38c | 14914 | cu->language = language_fortran; |
c906108c | 14915 | break; |
a766d390 DE |
14916 | case DW_LANG_Go: |
14917 | cu->language = language_go; | |
14918 | break; | |
c906108c | 14919 | case DW_LANG_Mips_Assembler: |
e142c38c | 14920 | cu->language = language_asm; |
c906108c | 14921 | break; |
bebd888e | 14922 | case DW_LANG_Java: |
e142c38c | 14923 | cu->language = language_java; |
bebd888e | 14924 | break; |
c906108c | 14925 | case DW_LANG_Ada83: |
8aaf0b47 | 14926 | case DW_LANG_Ada95: |
bc5f45f8 JB |
14927 | cu->language = language_ada; |
14928 | break; | |
72019c9c GM |
14929 | case DW_LANG_Modula2: |
14930 | cu->language = language_m2; | |
14931 | break; | |
fe8e67fd PM |
14932 | case DW_LANG_Pascal83: |
14933 | cu->language = language_pascal; | |
14934 | break; | |
22566fbd DJ |
14935 | case DW_LANG_ObjC: |
14936 | cu->language = language_objc; | |
14937 | break; | |
c906108c SS |
14938 | case DW_LANG_Cobol74: |
14939 | case DW_LANG_Cobol85: | |
c906108c | 14940 | default: |
e142c38c | 14941 | cu->language = language_minimal; |
c906108c SS |
14942 | break; |
14943 | } | |
e142c38c | 14944 | cu->language_defn = language_def (cu->language); |
c906108c SS |
14945 | } |
14946 | ||
14947 | /* Return the named attribute or NULL if not there. */ | |
14948 | ||
14949 | static struct attribute * | |
e142c38c | 14950 | dwarf2_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) |
c906108c | 14951 | { |
a48e046c | 14952 | for (;;) |
c906108c | 14953 | { |
a48e046c TT |
14954 | unsigned int i; |
14955 | struct attribute *spec = NULL; | |
14956 | ||
14957 | for (i = 0; i < die->num_attrs; ++i) | |
14958 | { | |
14959 | if (die->attrs[i].name == name) | |
14960 | return &die->attrs[i]; | |
14961 | if (die->attrs[i].name == DW_AT_specification | |
14962 | || die->attrs[i].name == DW_AT_abstract_origin) | |
14963 | spec = &die->attrs[i]; | |
14964 | } | |
14965 | ||
14966 | if (!spec) | |
14967 | break; | |
c906108c | 14968 | |
f2f0e013 | 14969 | die = follow_die_ref (die, spec, &cu); |
f2f0e013 | 14970 | } |
c5aa993b | 14971 | |
c906108c SS |
14972 | return NULL; |
14973 | } | |
14974 | ||
348e048f DE |
14975 | /* Return the named attribute or NULL if not there, |
14976 | but do not follow DW_AT_specification, etc. | |
14977 | This is for use in contexts where we're reading .debug_types dies. | |
14978 | Following DW_AT_specification, DW_AT_abstract_origin will take us | |
14979 | back up the chain, and we want to go down. */ | |
14980 | ||
14981 | static struct attribute * | |
45e58e77 | 14982 | dwarf2_attr_no_follow (struct die_info *die, unsigned int name) |
348e048f DE |
14983 | { |
14984 | unsigned int i; | |
14985 | ||
14986 | for (i = 0; i < die->num_attrs; ++i) | |
14987 | if (die->attrs[i].name == name) | |
14988 | return &die->attrs[i]; | |
14989 | ||
14990 | return NULL; | |
14991 | } | |
14992 | ||
05cf31d1 JB |
14993 | /* Return non-zero iff the attribute NAME is defined for the given DIE, |
14994 | and holds a non-zero value. This function should only be used for | |
2dc7f7b3 | 14995 | DW_FORM_flag or DW_FORM_flag_present attributes. */ |
05cf31d1 JB |
14996 | |
14997 | static int | |
14998 | dwarf2_flag_true_p (struct die_info *die, unsigned name, struct dwarf2_cu *cu) | |
14999 | { | |
15000 | struct attribute *attr = dwarf2_attr (die, name, cu); | |
15001 | ||
15002 | return (attr && DW_UNSND (attr)); | |
15003 | } | |
15004 | ||
3ca72b44 | 15005 | static int |
e142c38c | 15006 | die_is_declaration (struct die_info *die, struct dwarf2_cu *cu) |
3ca72b44 | 15007 | { |
05cf31d1 JB |
15008 | /* A DIE is a declaration if it has a DW_AT_declaration attribute |
15009 | which value is non-zero. However, we have to be careful with | |
15010 | DIEs having a DW_AT_specification attribute, because dwarf2_attr() | |
15011 | (via dwarf2_flag_true_p) follows this attribute. So we may | |
15012 | end up accidently finding a declaration attribute that belongs | |
15013 | to a different DIE referenced by the specification attribute, | |
15014 | even though the given DIE does not have a declaration attribute. */ | |
15015 | return (dwarf2_flag_true_p (die, DW_AT_declaration, cu) | |
15016 | && dwarf2_attr (die, DW_AT_specification, cu) == NULL); | |
3ca72b44 AC |
15017 | } |
15018 | ||
63d06c5c | 15019 | /* Return the die giving the specification for DIE, if there is |
f2f0e013 | 15020 | one. *SPEC_CU is the CU containing DIE on input, and the CU |
edb3359d DJ |
15021 | containing the return value on output. If there is no |
15022 | specification, but there is an abstract origin, that is | |
15023 | returned. */ | |
63d06c5c DC |
15024 | |
15025 | static struct die_info * | |
f2f0e013 | 15026 | die_specification (struct die_info *die, struct dwarf2_cu **spec_cu) |
63d06c5c | 15027 | { |
f2f0e013 DJ |
15028 | struct attribute *spec_attr = dwarf2_attr (die, DW_AT_specification, |
15029 | *spec_cu); | |
63d06c5c | 15030 | |
edb3359d DJ |
15031 | if (spec_attr == NULL) |
15032 | spec_attr = dwarf2_attr (die, DW_AT_abstract_origin, *spec_cu); | |
15033 | ||
63d06c5c DC |
15034 | if (spec_attr == NULL) |
15035 | return NULL; | |
15036 | else | |
f2f0e013 | 15037 | return follow_die_ref (die, spec_attr, spec_cu); |
63d06c5c | 15038 | } |
c906108c | 15039 | |
debd256d | 15040 | /* Free the line_header structure *LH, and any arrays and strings it |
ae2de4f8 DE |
15041 | refers to. |
15042 | NOTE: This is also used as a "cleanup" function. */ | |
15043 | ||
debd256d JB |
15044 | static void |
15045 | free_line_header (struct line_header *lh) | |
15046 | { | |
15047 | if (lh->standard_opcode_lengths) | |
a8bc7b56 | 15048 | xfree (lh->standard_opcode_lengths); |
debd256d JB |
15049 | |
15050 | /* Remember that all the lh->file_names[i].name pointers are | |
15051 | pointers into debug_line_buffer, and don't need to be freed. */ | |
15052 | if (lh->file_names) | |
a8bc7b56 | 15053 | xfree (lh->file_names); |
debd256d JB |
15054 | |
15055 | /* Similarly for the include directory names. */ | |
15056 | if (lh->include_dirs) | |
a8bc7b56 | 15057 | xfree (lh->include_dirs); |
debd256d | 15058 | |
a8bc7b56 | 15059 | xfree (lh); |
debd256d JB |
15060 | } |
15061 | ||
debd256d | 15062 | /* Add an entry to LH's include directory table. */ |
ae2de4f8 | 15063 | |
debd256d JB |
15064 | static void |
15065 | add_include_dir (struct line_header *lh, char *include_dir) | |
c906108c | 15066 | { |
debd256d JB |
15067 | /* Grow the array if necessary. */ |
15068 | if (lh->include_dirs_size == 0) | |
c5aa993b | 15069 | { |
debd256d JB |
15070 | lh->include_dirs_size = 1; /* for testing */ |
15071 | lh->include_dirs = xmalloc (lh->include_dirs_size | |
15072 | * sizeof (*lh->include_dirs)); | |
15073 | } | |
15074 | else if (lh->num_include_dirs >= lh->include_dirs_size) | |
15075 | { | |
15076 | lh->include_dirs_size *= 2; | |
15077 | lh->include_dirs = xrealloc (lh->include_dirs, | |
15078 | (lh->include_dirs_size | |
15079 | * sizeof (*lh->include_dirs))); | |
c5aa993b | 15080 | } |
c906108c | 15081 | |
debd256d JB |
15082 | lh->include_dirs[lh->num_include_dirs++] = include_dir; |
15083 | } | |
6e70227d | 15084 | |
debd256d | 15085 | /* Add an entry to LH's file name table. */ |
ae2de4f8 | 15086 | |
debd256d JB |
15087 | static void |
15088 | add_file_name (struct line_header *lh, | |
15089 | char *name, | |
15090 | unsigned int dir_index, | |
15091 | unsigned int mod_time, | |
15092 | unsigned int length) | |
15093 | { | |
15094 | struct file_entry *fe; | |
15095 | ||
15096 | /* Grow the array if necessary. */ | |
15097 | if (lh->file_names_size == 0) | |
15098 | { | |
15099 | lh->file_names_size = 1; /* for testing */ | |
15100 | lh->file_names = xmalloc (lh->file_names_size | |
15101 | * sizeof (*lh->file_names)); | |
15102 | } | |
15103 | else if (lh->num_file_names >= lh->file_names_size) | |
15104 | { | |
15105 | lh->file_names_size *= 2; | |
15106 | lh->file_names = xrealloc (lh->file_names, | |
15107 | (lh->file_names_size | |
15108 | * sizeof (*lh->file_names))); | |
15109 | } | |
15110 | ||
15111 | fe = &lh->file_names[lh->num_file_names++]; | |
15112 | fe->name = name; | |
15113 | fe->dir_index = dir_index; | |
15114 | fe->mod_time = mod_time; | |
15115 | fe->length = length; | |
aaa75496 | 15116 | fe->included_p = 0; |
cb1df416 | 15117 | fe->symtab = NULL; |
debd256d | 15118 | } |
6e70227d | 15119 | |
36586728 TT |
15120 | /* A convenience function to find the proper .debug_line section for a |
15121 | CU. */ | |
15122 | ||
15123 | static struct dwarf2_section_info * | |
15124 | get_debug_line_section (struct dwarf2_cu *cu) | |
15125 | { | |
15126 | struct dwarf2_section_info *section; | |
15127 | ||
15128 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
15129 | DWO file. */ | |
15130 | if (cu->dwo_unit && cu->per_cu->is_debug_types) | |
15131 | section = &cu->dwo_unit->dwo_file->sections.line; | |
15132 | else if (cu->per_cu->is_dwz) | |
15133 | { | |
15134 | struct dwz_file *dwz = dwarf2_get_dwz_file (); | |
15135 | ||
15136 | section = &dwz->line; | |
15137 | } | |
15138 | else | |
15139 | section = &dwarf2_per_objfile->line; | |
15140 | ||
15141 | return section; | |
15142 | } | |
15143 | ||
debd256d | 15144 | /* Read the statement program header starting at OFFSET in |
3019eac3 | 15145 | .debug_line, or .debug_line.dwo. Return a pointer |
6502dd73 | 15146 | to a struct line_header, allocated using xmalloc. |
debd256d JB |
15147 | |
15148 | NOTE: the strings in the include directory and file name tables of | |
3019eac3 DE |
15149 | the returned object point into the dwarf line section buffer, |
15150 | and must not be freed. */ | |
ae2de4f8 | 15151 | |
debd256d | 15152 | static struct line_header * |
3019eac3 | 15153 | dwarf_decode_line_header (unsigned int offset, struct dwarf2_cu *cu) |
debd256d JB |
15154 | { |
15155 | struct cleanup *back_to; | |
15156 | struct line_header *lh; | |
fe1b8b76 | 15157 | gdb_byte *line_ptr; |
c764a876 | 15158 | unsigned int bytes_read, offset_size; |
debd256d JB |
15159 | int i; |
15160 | char *cur_dir, *cur_file; | |
3019eac3 DE |
15161 | struct dwarf2_section_info *section; |
15162 | bfd *abfd; | |
15163 | ||
36586728 | 15164 | section = get_debug_line_section (cu); |
3019eac3 DE |
15165 | dwarf2_read_section (dwarf2_per_objfile->objfile, section); |
15166 | if (section->buffer == NULL) | |
debd256d | 15167 | { |
3019eac3 DE |
15168 | if (cu->dwo_unit && cu->per_cu->is_debug_types) |
15169 | complaint (&symfile_complaints, _("missing .debug_line.dwo section")); | |
15170 | else | |
15171 | complaint (&symfile_complaints, _("missing .debug_line section")); | |
debd256d JB |
15172 | return 0; |
15173 | } | |
15174 | ||
fceca515 DE |
15175 | /* We can't do this until we know the section is non-empty. |
15176 | Only then do we know we have such a section. */ | |
15177 | abfd = section->asection->owner; | |
15178 | ||
a738430d MK |
15179 | /* Make sure that at least there's room for the total_length field. |
15180 | That could be 12 bytes long, but we're just going to fudge that. */ | |
3019eac3 | 15181 | if (offset + 4 >= section->size) |
debd256d | 15182 | { |
4d3c2250 | 15183 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
15184 | return 0; |
15185 | } | |
15186 | ||
15187 | lh = xmalloc (sizeof (*lh)); | |
15188 | memset (lh, 0, sizeof (*lh)); | |
15189 | back_to = make_cleanup ((make_cleanup_ftype *) free_line_header, | |
15190 | (void *) lh); | |
15191 | ||
3019eac3 | 15192 | line_ptr = section->buffer + offset; |
debd256d | 15193 | |
a738430d | 15194 | /* Read in the header. */ |
6e70227d | 15195 | lh->total_length = |
c764a876 DE |
15196 | read_checked_initial_length_and_offset (abfd, line_ptr, &cu->header, |
15197 | &bytes_read, &offset_size); | |
debd256d | 15198 | line_ptr += bytes_read; |
3019eac3 | 15199 | if (line_ptr + lh->total_length > (section->buffer + section->size)) |
debd256d | 15200 | { |
4d3c2250 | 15201 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
15202 | return 0; |
15203 | } | |
15204 | lh->statement_program_end = line_ptr + lh->total_length; | |
15205 | lh->version = read_2_bytes (abfd, line_ptr); | |
15206 | line_ptr += 2; | |
c764a876 DE |
15207 | lh->header_length = read_offset_1 (abfd, line_ptr, offset_size); |
15208 | line_ptr += offset_size; | |
debd256d JB |
15209 | lh->minimum_instruction_length = read_1_byte (abfd, line_ptr); |
15210 | line_ptr += 1; | |
2dc7f7b3 TT |
15211 | if (lh->version >= 4) |
15212 | { | |
15213 | lh->maximum_ops_per_instruction = read_1_byte (abfd, line_ptr); | |
15214 | line_ptr += 1; | |
15215 | } | |
15216 | else | |
15217 | lh->maximum_ops_per_instruction = 1; | |
15218 | ||
15219 | if (lh->maximum_ops_per_instruction == 0) | |
15220 | { | |
15221 | lh->maximum_ops_per_instruction = 1; | |
15222 | complaint (&symfile_complaints, | |
3e43a32a MS |
15223 | _("invalid maximum_ops_per_instruction " |
15224 | "in `.debug_line' section")); | |
2dc7f7b3 TT |
15225 | } |
15226 | ||
debd256d JB |
15227 | lh->default_is_stmt = read_1_byte (abfd, line_ptr); |
15228 | line_ptr += 1; | |
15229 | lh->line_base = read_1_signed_byte (abfd, line_ptr); | |
15230 | line_ptr += 1; | |
15231 | lh->line_range = read_1_byte (abfd, line_ptr); | |
15232 | line_ptr += 1; | |
15233 | lh->opcode_base = read_1_byte (abfd, line_ptr); | |
15234 | line_ptr += 1; | |
15235 | lh->standard_opcode_lengths | |
fe1b8b76 | 15236 | = xmalloc (lh->opcode_base * sizeof (lh->standard_opcode_lengths[0])); |
debd256d JB |
15237 | |
15238 | lh->standard_opcode_lengths[0] = 1; /* This should never be used anyway. */ | |
15239 | for (i = 1; i < lh->opcode_base; ++i) | |
15240 | { | |
15241 | lh->standard_opcode_lengths[i] = read_1_byte (abfd, line_ptr); | |
15242 | line_ptr += 1; | |
15243 | } | |
15244 | ||
a738430d | 15245 | /* Read directory table. */ |
9b1c24c8 | 15246 | while ((cur_dir = read_direct_string (abfd, line_ptr, &bytes_read)) != NULL) |
debd256d JB |
15247 | { |
15248 | line_ptr += bytes_read; | |
15249 | add_include_dir (lh, cur_dir); | |
15250 | } | |
15251 | line_ptr += bytes_read; | |
15252 | ||
a738430d | 15253 | /* Read file name table. */ |
9b1c24c8 | 15254 | while ((cur_file = read_direct_string (abfd, line_ptr, &bytes_read)) != NULL) |
debd256d JB |
15255 | { |
15256 | unsigned int dir_index, mod_time, length; | |
15257 | ||
15258 | line_ptr += bytes_read; | |
15259 | dir_index = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
15260 | line_ptr += bytes_read; | |
15261 | mod_time = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
15262 | line_ptr += bytes_read; | |
15263 | length = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
15264 | line_ptr += bytes_read; | |
15265 | ||
15266 | add_file_name (lh, cur_file, dir_index, mod_time, length); | |
15267 | } | |
15268 | line_ptr += bytes_read; | |
6e70227d | 15269 | lh->statement_program_start = line_ptr; |
debd256d | 15270 | |
3019eac3 | 15271 | if (line_ptr > (section->buffer + section->size)) |
4d3c2250 | 15272 | complaint (&symfile_complaints, |
3e43a32a MS |
15273 | _("line number info header doesn't " |
15274 | "fit in `.debug_line' section")); | |
debd256d JB |
15275 | |
15276 | discard_cleanups (back_to); | |
15277 | return lh; | |
15278 | } | |
c906108c | 15279 | |
c6da4cef DE |
15280 | /* Subroutine of dwarf_decode_lines to simplify it. |
15281 | Return the file name of the psymtab for included file FILE_INDEX | |
15282 | in line header LH of PST. | |
15283 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
15284 | If space for the result is malloc'd, it will be freed by a cleanup. | |
1ed59174 JK |
15285 | Returns NULL if FILE_INDEX should be ignored, i.e., it is pst->filename. |
15286 | ||
15287 | The function creates dangling cleanup registration. */ | |
c6da4cef DE |
15288 | |
15289 | static char * | |
15290 | psymtab_include_file_name (const struct line_header *lh, int file_index, | |
15291 | const struct partial_symtab *pst, | |
15292 | const char *comp_dir) | |
15293 | { | |
15294 | const struct file_entry fe = lh->file_names [file_index]; | |
15295 | char *include_name = fe.name; | |
15296 | char *include_name_to_compare = include_name; | |
15297 | char *dir_name = NULL; | |
72b9f47f TT |
15298 | const char *pst_filename; |
15299 | char *copied_name = NULL; | |
c6da4cef DE |
15300 | int file_is_pst; |
15301 | ||
15302 | if (fe.dir_index) | |
15303 | dir_name = lh->include_dirs[fe.dir_index - 1]; | |
15304 | ||
15305 | if (!IS_ABSOLUTE_PATH (include_name) | |
15306 | && (dir_name != NULL || comp_dir != NULL)) | |
15307 | { | |
15308 | /* Avoid creating a duplicate psymtab for PST. | |
15309 | We do this by comparing INCLUDE_NAME and PST_FILENAME. | |
15310 | Before we do the comparison, however, we need to account | |
15311 | for DIR_NAME and COMP_DIR. | |
15312 | First prepend dir_name (if non-NULL). If we still don't | |
15313 | have an absolute path prepend comp_dir (if non-NULL). | |
15314 | However, the directory we record in the include-file's | |
15315 | psymtab does not contain COMP_DIR (to match the | |
15316 | corresponding symtab(s)). | |
15317 | ||
15318 | Example: | |
15319 | ||
15320 | bash$ cd /tmp | |
15321 | bash$ gcc -g ./hello.c | |
15322 | include_name = "hello.c" | |
15323 | dir_name = "." | |
15324 | DW_AT_comp_dir = comp_dir = "/tmp" | |
15325 | DW_AT_name = "./hello.c" */ | |
15326 | ||
15327 | if (dir_name != NULL) | |
15328 | { | |
15329 | include_name = concat (dir_name, SLASH_STRING, | |
15330 | include_name, (char *)NULL); | |
15331 | include_name_to_compare = include_name; | |
15332 | make_cleanup (xfree, include_name); | |
15333 | } | |
15334 | if (!IS_ABSOLUTE_PATH (include_name) && comp_dir != NULL) | |
15335 | { | |
15336 | include_name_to_compare = concat (comp_dir, SLASH_STRING, | |
15337 | include_name, (char *)NULL); | |
15338 | } | |
15339 | } | |
15340 | ||
15341 | pst_filename = pst->filename; | |
15342 | if (!IS_ABSOLUTE_PATH (pst_filename) && pst->dirname != NULL) | |
15343 | { | |
72b9f47f TT |
15344 | copied_name = concat (pst->dirname, SLASH_STRING, |
15345 | pst_filename, (char *)NULL); | |
15346 | pst_filename = copied_name; | |
c6da4cef DE |
15347 | } |
15348 | ||
1e3fad37 | 15349 | file_is_pst = FILENAME_CMP (include_name_to_compare, pst_filename) == 0; |
c6da4cef DE |
15350 | |
15351 | if (include_name_to_compare != include_name) | |
15352 | xfree (include_name_to_compare); | |
72b9f47f TT |
15353 | if (copied_name != NULL) |
15354 | xfree (copied_name); | |
c6da4cef DE |
15355 | |
15356 | if (file_is_pst) | |
15357 | return NULL; | |
15358 | return include_name; | |
15359 | } | |
15360 | ||
c91513d8 PP |
15361 | /* Ignore this record_line request. */ |
15362 | ||
15363 | static void | |
15364 | noop_record_line (struct subfile *subfile, int line, CORE_ADDR pc) | |
15365 | { | |
15366 | return; | |
15367 | } | |
15368 | ||
f3f5162e DE |
15369 | /* Subroutine of dwarf_decode_lines to simplify it. |
15370 | Process the line number information in LH. */ | |
debd256d | 15371 | |
c906108c | 15372 | static void |
f3f5162e DE |
15373 | dwarf_decode_lines_1 (struct line_header *lh, const char *comp_dir, |
15374 | struct dwarf2_cu *cu, struct partial_symtab *pst) | |
c906108c | 15375 | { |
a8c50c1f | 15376 | gdb_byte *line_ptr, *extended_end; |
fe1b8b76 | 15377 | gdb_byte *line_end; |
a8c50c1f | 15378 | unsigned int bytes_read, extended_len; |
c906108c | 15379 | unsigned char op_code, extended_op, adj_opcode; |
e142c38c DJ |
15380 | CORE_ADDR baseaddr; |
15381 | struct objfile *objfile = cu->objfile; | |
f3f5162e | 15382 | bfd *abfd = objfile->obfd; |
fbf65064 | 15383 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
aaa75496 | 15384 | const int decode_for_pst_p = (pst != NULL); |
f3f5162e | 15385 | struct subfile *last_subfile = NULL; |
c91513d8 PP |
15386 | void (*p_record_line) (struct subfile *subfile, int line, CORE_ADDR pc) |
15387 | = record_line; | |
e142c38c DJ |
15388 | |
15389 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 15390 | |
debd256d JB |
15391 | line_ptr = lh->statement_program_start; |
15392 | line_end = lh->statement_program_end; | |
c906108c SS |
15393 | |
15394 | /* Read the statement sequences until there's nothing left. */ | |
15395 | while (line_ptr < line_end) | |
15396 | { | |
15397 | /* state machine registers */ | |
15398 | CORE_ADDR address = 0; | |
15399 | unsigned int file = 1; | |
15400 | unsigned int line = 1; | |
15401 | unsigned int column = 0; | |
debd256d | 15402 | int is_stmt = lh->default_is_stmt; |
c906108c SS |
15403 | int basic_block = 0; |
15404 | int end_sequence = 0; | |
fbf65064 | 15405 | CORE_ADDR addr; |
2dc7f7b3 | 15406 | unsigned char op_index = 0; |
c906108c | 15407 | |
aaa75496 | 15408 | if (!decode_for_pst_p && lh->num_file_names >= file) |
c906108c | 15409 | { |
aaa75496 | 15410 | /* Start a subfile for the current file of the state machine. */ |
debd256d JB |
15411 | /* lh->include_dirs and lh->file_names are 0-based, but the |
15412 | directory and file name numbers in the statement program | |
15413 | are 1-based. */ | |
15414 | struct file_entry *fe = &lh->file_names[file - 1]; | |
4f1520fb | 15415 | char *dir = NULL; |
a738430d | 15416 | |
debd256d JB |
15417 | if (fe->dir_index) |
15418 | dir = lh->include_dirs[fe->dir_index - 1]; | |
4f1520fb FR |
15419 | |
15420 | dwarf2_start_subfile (fe->name, dir, comp_dir); | |
c906108c SS |
15421 | } |
15422 | ||
a738430d | 15423 | /* Decode the table. */ |
c5aa993b | 15424 | while (!end_sequence) |
c906108c SS |
15425 | { |
15426 | op_code = read_1_byte (abfd, line_ptr); | |
15427 | line_ptr += 1; | |
59205f5a JB |
15428 | if (line_ptr > line_end) |
15429 | { | |
15430 | dwarf2_debug_line_missing_end_sequence_complaint (); | |
15431 | break; | |
15432 | } | |
9aa1fe7e | 15433 | |
debd256d | 15434 | if (op_code >= lh->opcode_base) |
6e70227d | 15435 | { |
a738430d | 15436 | /* Special operand. */ |
debd256d | 15437 | adj_opcode = op_code - lh->opcode_base; |
2dc7f7b3 TT |
15438 | address += (((op_index + (adj_opcode / lh->line_range)) |
15439 | / lh->maximum_ops_per_instruction) | |
15440 | * lh->minimum_instruction_length); | |
15441 | op_index = ((op_index + (adj_opcode / lh->line_range)) | |
15442 | % lh->maximum_ops_per_instruction); | |
debd256d | 15443 | line += lh->line_base + (adj_opcode % lh->line_range); |
59205f5a | 15444 | if (lh->num_file_names < file || file == 0) |
25e43795 | 15445 | dwarf2_debug_line_missing_file_complaint (); |
2dc7f7b3 TT |
15446 | /* For now we ignore lines not starting on an |
15447 | instruction boundary. */ | |
15448 | else if (op_index == 0) | |
25e43795 DJ |
15449 | { |
15450 | lh->file_names[file - 1].included_p = 1; | |
ca5f395d | 15451 | if (!decode_for_pst_p && is_stmt) |
fbf65064 UW |
15452 | { |
15453 | if (last_subfile != current_subfile) | |
15454 | { | |
15455 | addr = gdbarch_addr_bits_remove (gdbarch, address); | |
15456 | if (last_subfile) | |
c91513d8 | 15457 | (*p_record_line) (last_subfile, 0, addr); |
fbf65064 UW |
15458 | last_subfile = current_subfile; |
15459 | } | |
25e43795 | 15460 | /* Append row to matrix using current values. */ |
7019d805 | 15461 | addr = gdbarch_addr_bits_remove (gdbarch, address); |
c91513d8 | 15462 | (*p_record_line) (current_subfile, line, addr); |
366da635 | 15463 | } |
25e43795 | 15464 | } |
ca5f395d | 15465 | basic_block = 0; |
9aa1fe7e GK |
15466 | } |
15467 | else switch (op_code) | |
c906108c SS |
15468 | { |
15469 | case DW_LNS_extended_op: | |
3e43a32a MS |
15470 | extended_len = read_unsigned_leb128 (abfd, line_ptr, |
15471 | &bytes_read); | |
473b7be6 | 15472 | line_ptr += bytes_read; |
a8c50c1f | 15473 | extended_end = line_ptr + extended_len; |
c906108c SS |
15474 | extended_op = read_1_byte (abfd, line_ptr); |
15475 | line_ptr += 1; | |
15476 | switch (extended_op) | |
15477 | { | |
15478 | case DW_LNE_end_sequence: | |
c91513d8 | 15479 | p_record_line = record_line; |
c906108c | 15480 | end_sequence = 1; |
c906108c SS |
15481 | break; |
15482 | case DW_LNE_set_address: | |
e7c27a73 | 15483 | address = read_address (abfd, line_ptr, cu, &bytes_read); |
c91513d8 PP |
15484 | |
15485 | if (address == 0 && !dwarf2_per_objfile->has_section_at_zero) | |
15486 | { | |
15487 | /* This line table is for a function which has been | |
15488 | GCd by the linker. Ignore it. PR gdb/12528 */ | |
15489 | ||
15490 | long line_offset | |
36586728 | 15491 | = line_ptr - get_debug_line_section (cu)->buffer; |
c91513d8 PP |
15492 | |
15493 | complaint (&symfile_complaints, | |
15494 | _(".debug_line address at offset 0x%lx is 0 " | |
15495 | "[in module %s]"), | |
bb5ed363 | 15496 | line_offset, objfile->name); |
c91513d8 PP |
15497 | p_record_line = noop_record_line; |
15498 | } | |
15499 | ||
2dc7f7b3 | 15500 | op_index = 0; |
107d2387 AC |
15501 | line_ptr += bytes_read; |
15502 | address += baseaddr; | |
c906108c SS |
15503 | break; |
15504 | case DW_LNE_define_file: | |
debd256d JB |
15505 | { |
15506 | char *cur_file; | |
15507 | unsigned int dir_index, mod_time, length; | |
6e70227d | 15508 | |
3e43a32a MS |
15509 | cur_file = read_direct_string (abfd, line_ptr, |
15510 | &bytes_read); | |
debd256d JB |
15511 | line_ptr += bytes_read; |
15512 | dir_index = | |
15513 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
15514 | line_ptr += bytes_read; | |
15515 | mod_time = | |
15516 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
15517 | line_ptr += bytes_read; | |
15518 | length = | |
15519 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
15520 | line_ptr += bytes_read; | |
15521 | add_file_name (lh, cur_file, dir_index, mod_time, length); | |
15522 | } | |
c906108c | 15523 | break; |
d0c6ba3d CC |
15524 | case DW_LNE_set_discriminator: |
15525 | /* The discriminator is not interesting to the debugger; | |
15526 | just ignore it. */ | |
15527 | line_ptr = extended_end; | |
15528 | break; | |
c906108c | 15529 | default: |
4d3c2250 | 15530 | complaint (&symfile_complaints, |
e2e0b3e5 | 15531 | _("mangled .debug_line section")); |
debd256d | 15532 | return; |
c906108c | 15533 | } |
a8c50c1f DJ |
15534 | /* Make sure that we parsed the extended op correctly. If e.g. |
15535 | we expected a different address size than the producer used, | |
15536 | we may have read the wrong number of bytes. */ | |
15537 | if (line_ptr != extended_end) | |
15538 | { | |
15539 | complaint (&symfile_complaints, | |
15540 | _("mangled .debug_line section")); | |
15541 | return; | |
15542 | } | |
c906108c SS |
15543 | break; |
15544 | case DW_LNS_copy: | |
59205f5a | 15545 | if (lh->num_file_names < file || file == 0) |
25e43795 DJ |
15546 | dwarf2_debug_line_missing_file_complaint (); |
15547 | else | |
366da635 | 15548 | { |
25e43795 | 15549 | lh->file_names[file - 1].included_p = 1; |
ca5f395d | 15550 | if (!decode_for_pst_p && is_stmt) |
fbf65064 UW |
15551 | { |
15552 | if (last_subfile != current_subfile) | |
15553 | { | |
15554 | addr = gdbarch_addr_bits_remove (gdbarch, address); | |
15555 | if (last_subfile) | |
c91513d8 | 15556 | (*p_record_line) (last_subfile, 0, addr); |
fbf65064 UW |
15557 | last_subfile = current_subfile; |
15558 | } | |
7019d805 | 15559 | addr = gdbarch_addr_bits_remove (gdbarch, address); |
c91513d8 | 15560 | (*p_record_line) (current_subfile, line, addr); |
fbf65064 | 15561 | } |
366da635 | 15562 | } |
c906108c SS |
15563 | basic_block = 0; |
15564 | break; | |
15565 | case DW_LNS_advance_pc: | |
2dc7f7b3 TT |
15566 | { |
15567 | CORE_ADDR adjust | |
15568 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
15569 | ||
15570 | address += (((op_index + adjust) | |
15571 | / lh->maximum_ops_per_instruction) | |
15572 | * lh->minimum_instruction_length); | |
15573 | op_index = ((op_index + adjust) | |
15574 | % lh->maximum_ops_per_instruction); | |
15575 | line_ptr += bytes_read; | |
15576 | } | |
c906108c SS |
15577 | break; |
15578 | case DW_LNS_advance_line: | |
15579 | line += read_signed_leb128 (abfd, line_ptr, &bytes_read); | |
15580 | line_ptr += bytes_read; | |
15581 | break; | |
15582 | case DW_LNS_set_file: | |
debd256d | 15583 | { |
a738430d MK |
15584 | /* The arrays lh->include_dirs and lh->file_names are |
15585 | 0-based, but the directory and file name numbers in | |
15586 | the statement program are 1-based. */ | |
debd256d | 15587 | struct file_entry *fe; |
4f1520fb | 15588 | char *dir = NULL; |
a738430d | 15589 | |
debd256d JB |
15590 | file = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
15591 | line_ptr += bytes_read; | |
59205f5a | 15592 | if (lh->num_file_names < file || file == 0) |
25e43795 DJ |
15593 | dwarf2_debug_line_missing_file_complaint (); |
15594 | else | |
15595 | { | |
15596 | fe = &lh->file_names[file - 1]; | |
15597 | if (fe->dir_index) | |
15598 | dir = lh->include_dirs[fe->dir_index - 1]; | |
15599 | if (!decode_for_pst_p) | |
15600 | { | |
15601 | last_subfile = current_subfile; | |
15602 | dwarf2_start_subfile (fe->name, dir, comp_dir); | |
15603 | } | |
15604 | } | |
debd256d | 15605 | } |
c906108c SS |
15606 | break; |
15607 | case DW_LNS_set_column: | |
15608 | column = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
15609 | line_ptr += bytes_read; | |
15610 | break; | |
15611 | case DW_LNS_negate_stmt: | |
15612 | is_stmt = (!is_stmt); | |
15613 | break; | |
15614 | case DW_LNS_set_basic_block: | |
15615 | basic_block = 1; | |
15616 | break; | |
c2c6d25f JM |
15617 | /* Add to the address register of the state machine the |
15618 | address increment value corresponding to special opcode | |
a738430d MK |
15619 | 255. I.e., this value is scaled by the minimum |
15620 | instruction length since special opcode 255 would have | |
b021a221 | 15621 | scaled the increment. */ |
c906108c | 15622 | case DW_LNS_const_add_pc: |
2dc7f7b3 TT |
15623 | { |
15624 | CORE_ADDR adjust = (255 - lh->opcode_base) / lh->line_range; | |
15625 | ||
15626 | address += (((op_index + adjust) | |
15627 | / lh->maximum_ops_per_instruction) | |
15628 | * lh->minimum_instruction_length); | |
15629 | op_index = ((op_index + adjust) | |
15630 | % lh->maximum_ops_per_instruction); | |
15631 | } | |
c906108c SS |
15632 | break; |
15633 | case DW_LNS_fixed_advance_pc: | |
15634 | address += read_2_bytes (abfd, line_ptr); | |
2dc7f7b3 | 15635 | op_index = 0; |
c906108c SS |
15636 | line_ptr += 2; |
15637 | break; | |
9aa1fe7e | 15638 | default: |
a738430d MK |
15639 | { |
15640 | /* Unknown standard opcode, ignore it. */ | |
9aa1fe7e | 15641 | int i; |
a738430d | 15642 | |
debd256d | 15643 | for (i = 0; i < lh->standard_opcode_lengths[op_code]; i++) |
9aa1fe7e GK |
15644 | { |
15645 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
15646 | line_ptr += bytes_read; | |
15647 | } | |
15648 | } | |
c906108c SS |
15649 | } |
15650 | } | |
59205f5a JB |
15651 | if (lh->num_file_names < file || file == 0) |
15652 | dwarf2_debug_line_missing_file_complaint (); | |
15653 | else | |
15654 | { | |
15655 | lh->file_names[file - 1].included_p = 1; | |
15656 | if (!decode_for_pst_p) | |
fbf65064 UW |
15657 | { |
15658 | addr = gdbarch_addr_bits_remove (gdbarch, address); | |
c91513d8 | 15659 | (*p_record_line) (current_subfile, 0, addr); |
fbf65064 | 15660 | } |
59205f5a | 15661 | } |
c906108c | 15662 | } |
f3f5162e DE |
15663 | } |
15664 | ||
15665 | /* Decode the Line Number Program (LNP) for the given line_header | |
15666 | structure and CU. The actual information extracted and the type | |
15667 | of structures created from the LNP depends on the value of PST. | |
15668 | ||
15669 | 1. If PST is NULL, then this procedure uses the data from the program | |
15670 | to create all necessary symbol tables, and their linetables. | |
15671 | ||
15672 | 2. If PST is not NULL, this procedure reads the program to determine | |
15673 | the list of files included by the unit represented by PST, and | |
15674 | builds all the associated partial symbol tables. | |
15675 | ||
15676 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
15677 | It is used for relative paths in the line table. | |
15678 | NOTE: When processing partial symtabs (pst != NULL), | |
15679 | comp_dir == pst->dirname. | |
15680 | ||
15681 | NOTE: It is important that psymtabs have the same file name (via strcmp) | |
15682 | as the corresponding symtab. Since COMP_DIR is not used in the name of the | |
15683 | symtab we don't use it in the name of the psymtabs we create. | |
15684 | E.g. expand_line_sal requires this when finding psymtabs to expand. | |
15685 | A good testcase for this is mb-inline.exp. */ | |
15686 | ||
15687 | static void | |
15688 | dwarf_decode_lines (struct line_header *lh, const char *comp_dir, | |
15689 | struct dwarf2_cu *cu, struct partial_symtab *pst, | |
15690 | int want_line_info) | |
15691 | { | |
15692 | struct objfile *objfile = cu->objfile; | |
15693 | const int decode_for_pst_p = (pst != NULL); | |
15694 | struct subfile *first_subfile = current_subfile; | |
15695 | ||
15696 | if (want_line_info) | |
15697 | dwarf_decode_lines_1 (lh, comp_dir, cu, pst); | |
aaa75496 JB |
15698 | |
15699 | if (decode_for_pst_p) | |
15700 | { | |
15701 | int file_index; | |
15702 | ||
15703 | /* Now that we're done scanning the Line Header Program, we can | |
15704 | create the psymtab of each included file. */ | |
15705 | for (file_index = 0; file_index < lh->num_file_names; file_index++) | |
15706 | if (lh->file_names[file_index].included_p == 1) | |
15707 | { | |
c6da4cef DE |
15708 | char *include_name = |
15709 | psymtab_include_file_name (lh, file_index, pst, comp_dir); | |
15710 | if (include_name != NULL) | |
aaa75496 JB |
15711 | dwarf2_create_include_psymtab (include_name, pst, objfile); |
15712 | } | |
15713 | } | |
cb1df416 DJ |
15714 | else |
15715 | { | |
15716 | /* Make sure a symtab is created for every file, even files | |
15717 | which contain only variables (i.e. no code with associated | |
15718 | line numbers). */ | |
cb1df416 | 15719 | int i; |
cb1df416 DJ |
15720 | |
15721 | for (i = 0; i < lh->num_file_names; i++) | |
15722 | { | |
15723 | char *dir = NULL; | |
f3f5162e | 15724 | struct file_entry *fe; |
9a619af0 | 15725 | |
cb1df416 DJ |
15726 | fe = &lh->file_names[i]; |
15727 | if (fe->dir_index) | |
15728 | dir = lh->include_dirs[fe->dir_index - 1]; | |
15729 | dwarf2_start_subfile (fe->name, dir, comp_dir); | |
15730 | ||
15731 | /* Skip the main file; we don't need it, and it must be | |
15732 | allocated last, so that it will show up before the | |
15733 | non-primary symtabs in the objfile's symtab list. */ | |
15734 | if (current_subfile == first_subfile) | |
15735 | continue; | |
15736 | ||
15737 | if (current_subfile->symtab == NULL) | |
15738 | current_subfile->symtab = allocate_symtab (current_subfile->name, | |
bb5ed363 | 15739 | objfile); |
cb1df416 DJ |
15740 | fe->symtab = current_subfile->symtab; |
15741 | } | |
15742 | } | |
c906108c SS |
15743 | } |
15744 | ||
15745 | /* Start a subfile for DWARF. FILENAME is the name of the file and | |
15746 | DIRNAME the name of the source directory which contains FILENAME | |
4f1520fb FR |
15747 | or NULL if not known. COMP_DIR is the compilation directory for the |
15748 | linetable's compilation unit or NULL if not known. | |
c906108c SS |
15749 | This routine tries to keep line numbers from identical absolute and |
15750 | relative file names in a common subfile. | |
15751 | ||
15752 | Using the `list' example from the GDB testsuite, which resides in | |
15753 | /srcdir and compiling it with Irix6.2 cc in /compdir using a filename | |
15754 | of /srcdir/list0.c yields the following debugging information for list0.c: | |
15755 | ||
c5aa993b JM |
15756 | DW_AT_name: /srcdir/list0.c |
15757 | DW_AT_comp_dir: /compdir | |
357e46e7 | 15758 | files.files[0].name: list0.h |
c5aa993b | 15759 | files.files[0].dir: /srcdir |
357e46e7 | 15760 | files.files[1].name: list0.c |
c5aa993b | 15761 | files.files[1].dir: /srcdir |
c906108c SS |
15762 | |
15763 | The line number information for list0.c has to end up in a single | |
4f1520fb FR |
15764 | subfile, so that `break /srcdir/list0.c:1' works as expected. |
15765 | start_subfile will ensure that this happens provided that we pass the | |
15766 | concatenation of files.files[1].dir and files.files[1].name as the | |
15767 | subfile's name. */ | |
c906108c SS |
15768 | |
15769 | static void | |
3e43a32a MS |
15770 | dwarf2_start_subfile (char *filename, const char *dirname, |
15771 | const char *comp_dir) | |
c906108c | 15772 | { |
4f1520fb FR |
15773 | char *fullname; |
15774 | ||
15775 | /* While reading the DIEs, we call start_symtab(DW_AT_name, DW_AT_comp_dir). | |
15776 | `start_symtab' will always pass the contents of DW_AT_comp_dir as | |
15777 | second argument to start_subfile. To be consistent, we do the | |
15778 | same here. In order not to lose the line information directory, | |
15779 | we concatenate it to the filename when it makes sense. | |
15780 | Note that the Dwarf3 standard says (speaking of filenames in line | |
15781 | information): ``The directory index is ignored for file names | |
15782 | that represent full path names''. Thus ignoring dirname in the | |
15783 | `else' branch below isn't an issue. */ | |
c906108c | 15784 | |
d5166ae1 | 15785 | if (!IS_ABSOLUTE_PATH (filename) && dirname != NULL) |
4f1520fb FR |
15786 | fullname = concat (dirname, SLASH_STRING, filename, (char *)NULL); |
15787 | else | |
15788 | fullname = filename; | |
c906108c | 15789 | |
4f1520fb FR |
15790 | start_subfile (fullname, comp_dir); |
15791 | ||
15792 | if (fullname != filename) | |
15793 | xfree (fullname); | |
c906108c SS |
15794 | } |
15795 | ||
f4dc4d17 DE |
15796 | /* Start a symtab for DWARF. |
15797 | NAME, COMP_DIR, LOW_PC are passed to start_symtab. */ | |
15798 | ||
15799 | static void | |
15800 | dwarf2_start_symtab (struct dwarf2_cu *cu, | |
15d034d0 | 15801 | const char *name, const char *comp_dir, CORE_ADDR low_pc) |
f4dc4d17 DE |
15802 | { |
15803 | start_symtab (name, comp_dir, low_pc); | |
15804 | record_debugformat ("DWARF 2"); | |
15805 | record_producer (cu->producer); | |
15806 | ||
15807 | /* We assume that we're processing GCC output. */ | |
15808 | processing_gcc_compilation = 2; | |
15809 | ||
4d4ec4e5 | 15810 | cu->processing_has_namespace_info = 0; |
f4dc4d17 DE |
15811 | } |
15812 | ||
4c2df51b DJ |
15813 | static void |
15814 | var_decode_location (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 15815 | struct dwarf2_cu *cu) |
4c2df51b | 15816 | { |
e7c27a73 DJ |
15817 | struct objfile *objfile = cu->objfile; |
15818 | struct comp_unit_head *cu_header = &cu->header; | |
15819 | ||
4c2df51b DJ |
15820 | /* NOTE drow/2003-01-30: There used to be a comment and some special |
15821 | code here to turn a symbol with DW_AT_external and a | |
15822 | SYMBOL_VALUE_ADDRESS of 0 into a LOC_UNRESOLVED symbol. This was | |
15823 | necessary for platforms (maybe Alpha, certainly PowerPC GNU/Linux | |
15824 | with some versions of binutils) where shared libraries could have | |
15825 | relocations against symbols in their debug information - the | |
15826 | minimal symbol would have the right address, but the debug info | |
15827 | would not. It's no longer necessary, because we will explicitly | |
15828 | apply relocations when we read in the debug information now. */ | |
15829 | ||
15830 | /* A DW_AT_location attribute with no contents indicates that a | |
15831 | variable has been optimized away. */ | |
15832 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size == 0) | |
15833 | { | |
f1e6e072 | 15834 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
4c2df51b DJ |
15835 | return; |
15836 | } | |
15837 | ||
15838 | /* Handle one degenerate form of location expression specially, to | |
15839 | preserve GDB's previous behavior when section offsets are | |
3019eac3 DE |
15840 | specified. If this is just a DW_OP_addr or DW_OP_GNU_addr_index |
15841 | then mark this symbol as LOC_STATIC. */ | |
4c2df51b DJ |
15842 | |
15843 | if (attr_form_is_block (attr) | |
3019eac3 DE |
15844 | && ((DW_BLOCK (attr)->data[0] == DW_OP_addr |
15845 | && DW_BLOCK (attr)->size == 1 + cu_header->addr_size) | |
15846 | || (DW_BLOCK (attr)->data[0] == DW_OP_GNU_addr_index | |
15847 | && (DW_BLOCK (attr)->size | |
15848 | == 1 + leb128_size (&DW_BLOCK (attr)->data[1]))))) | |
4c2df51b | 15849 | { |
891d2f0b | 15850 | unsigned int dummy; |
4c2df51b | 15851 | |
3019eac3 DE |
15852 | if (DW_BLOCK (attr)->data[0] == DW_OP_addr) |
15853 | SYMBOL_VALUE_ADDRESS (sym) = | |
15854 | read_address (objfile->obfd, DW_BLOCK (attr)->data + 1, cu, &dummy); | |
15855 | else | |
15856 | SYMBOL_VALUE_ADDRESS (sym) = | |
15857 | read_addr_index_from_leb128 (cu, DW_BLOCK (attr)->data + 1, &dummy); | |
f1e6e072 | 15858 | SYMBOL_ACLASS_INDEX (sym) = LOC_STATIC; |
4c2df51b DJ |
15859 | fixup_symbol_section (sym, objfile); |
15860 | SYMBOL_VALUE_ADDRESS (sym) += ANOFFSET (objfile->section_offsets, | |
15861 | SYMBOL_SECTION (sym)); | |
4c2df51b DJ |
15862 | return; |
15863 | } | |
15864 | ||
15865 | /* NOTE drow/2002-01-30: It might be worthwhile to have a static | |
15866 | expression evaluator, and use LOC_COMPUTED only when necessary | |
15867 | (i.e. when the value of a register or memory location is | |
15868 | referenced, or a thread-local block, etc.). Then again, it might | |
15869 | not be worthwhile. I'm assuming that it isn't unless performance | |
15870 | or memory numbers show me otherwise. */ | |
15871 | ||
f1e6e072 | 15872 | dwarf2_symbol_mark_computed (attr, sym, cu, 0); |
8be455d7 | 15873 | |
f1e6e072 | 15874 | if (SYMBOL_COMPUTED_OPS (sym)->location_has_loclist) |
8be455d7 | 15875 | cu->has_loclist = 1; |
4c2df51b DJ |
15876 | } |
15877 | ||
c906108c SS |
15878 | /* Given a pointer to a DWARF information entry, figure out if we need |
15879 | to make a symbol table entry for it, and if so, create a new entry | |
15880 | and return a pointer to it. | |
15881 | If TYPE is NULL, determine symbol type from the die, otherwise | |
34eaf542 TT |
15882 | used the passed type. |
15883 | If SPACE is not NULL, use it to hold the new symbol. If it is | |
15884 | NULL, allocate a new symbol on the objfile's obstack. */ | |
c906108c SS |
15885 | |
15886 | static struct symbol * | |
34eaf542 TT |
15887 | new_symbol_full (struct die_info *die, struct type *type, struct dwarf2_cu *cu, |
15888 | struct symbol *space) | |
c906108c | 15889 | { |
e7c27a73 | 15890 | struct objfile *objfile = cu->objfile; |
c906108c | 15891 | struct symbol *sym = NULL; |
15d034d0 | 15892 | const char *name; |
c906108c SS |
15893 | struct attribute *attr = NULL; |
15894 | struct attribute *attr2 = NULL; | |
e142c38c | 15895 | CORE_ADDR baseaddr; |
e37fd15a SW |
15896 | struct pending **list_to_add = NULL; |
15897 | ||
edb3359d | 15898 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
e142c38c DJ |
15899 | |
15900 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 15901 | |
94af9270 | 15902 | name = dwarf2_name (die, cu); |
c906108c SS |
15903 | if (name) |
15904 | { | |
94af9270 | 15905 | const char *linkagename; |
34eaf542 | 15906 | int suppress_add = 0; |
94af9270 | 15907 | |
34eaf542 TT |
15908 | if (space) |
15909 | sym = space; | |
15910 | else | |
15911 | sym = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct symbol); | |
c906108c | 15912 | OBJSTAT (objfile, n_syms++); |
2de7ced7 DJ |
15913 | |
15914 | /* Cache this symbol's name and the name's demangled form (if any). */ | |
33e5013e | 15915 | SYMBOL_SET_LANGUAGE (sym, cu->language); |
94af9270 KS |
15916 | linkagename = dwarf2_physname (name, die, cu); |
15917 | SYMBOL_SET_NAMES (sym, linkagename, strlen (linkagename), 0, objfile); | |
c906108c | 15918 | |
f55ee35c JK |
15919 | /* Fortran does not have mangling standard and the mangling does differ |
15920 | between gfortran, iFort etc. */ | |
15921 | if (cu->language == language_fortran | |
b250c185 | 15922 | && symbol_get_demangled_name (&(sym->ginfo)) == NULL) |
29df156d | 15923 | symbol_set_demangled_name (&(sym->ginfo), |
cfc594ee | 15924 | dwarf2_full_name (name, die, cu), |
29df156d | 15925 | NULL); |
f55ee35c | 15926 | |
c906108c | 15927 | /* Default assumptions. |
c5aa993b | 15928 | Use the passed type or decode it from the die. */ |
176620f1 | 15929 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
f1e6e072 | 15930 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
c906108c SS |
15931 | if (type != NULL) |
15932 | SYMBOL_TYPE (sym) = type; | |
15933 | else | |
e7c27a73 | 15934 | SYMBOL_TYPE (sym) = die_type (die, cu); |
edb3359d DJ |
15935 | attr = dwarf2_attr (die, |
15936 | inlined_func ? DW_AT_call_line : DW_AT_decl_line, | |
15937 | cu); | |
c906108c SS |
15938 | if (attr) |
15939 | { | |
15940 | SYMBOL_LINE (sym) = DW_UNSND (attr); | |
15941 | } | |
cb1df416 | 15942 | |
edb3359d DJ |
15943 | attr = dwarf2_attr (die, |
15944 | inlined_func ? DW_AT_call_file : DW_AT_decl_file, | |
15945 | cu); | |
cb1df416 DJ |
15946 | if (attr) |
15947 | { | |
15948 | int file_index = DW_UNSND (attr); | |
9a619af0 | 15949 | |
cb1df416 DJ |
15950 | if (cu->line_header == NULL |
15951 | || file_index > cu->line_header->num_file_names) | |
15952 | complaint (&symfile_complaints, | |
15953 | _("file index out of range")); | |
1c3d648d | 15954 | else if (file_index > 0) |
cb1df416 DJ |
15955 | { |
15956 | struct file_entry *fe; | |
9a619af0 | 15957 | |
cb1df416 DJ |
15958 | fe = &cu->line_header->file_names[file_index - 1]; |
15959 | SYMBOL_SYMTAB (sym) = fe->symtab; | |
15960 | } | |
15961 | } | |
15962 | ||
c906108c SS |
15963 | switch (die->tag) |
15964 | { | |
15965 | case DW_TAG_label: | |
e142c38c | 15966 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
c906108c SS |
15967 | if (attr) |
15968 | { | |
15969 | SYMBOL_VALUE_ADDRESS (sym) = DW_ADDR (attr) + baseaddr; | |
15970 | } | |
0f5238ed TT |
15971 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_core_addr; |
15972 | SYMBOL_DOMAIN (sym) = LABEL_DOMAIN; | |
f1e6e072 | 15973 | SYMBOL_ACLASS_INDEX (sym) = LOC_LABEL; |
0f5238ed | 15974 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
15975 | break; |
15976 | case DW_TAG_subprogram: | |
15977 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
15978 | finish_block. */ | |
f1e6e072 | 15979 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
e142c38c | 15980 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
2cfa0c8d JB |
15981 | if ((attr2 && (DW_UNSND (attr2) != 0)) |
15982 | || cu->language == language_ada) | |
c906108c | 15983 | { |
2cfa0c8d JB |
15984 | /* Subprograms marked external are stored as a global symbol. |
15985 | Ada subprograms, whether marked external or not, are always | |
15986 | stored as a global symbol, because we want to be able to | |
15987 | access them globally. For instance, we want to be able | |
15988 | to break on a nested subprogram without having to | |
15989 | specify the context. */ | |
e37fd15a | 15990 | list_to_add = &global_symbols; |
c906108c SS |
15991 | } |
15992 | else | |
15993 | { | |
e37fd15a | 15994 | list_to_add = cu->list_in_scope; |
c906108c SS |
15995 | } |
15996 | break; | |
edb3359d DJ |
15997 | case DW_TAG_inlined_subroutine: |
15998 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
15999 | finish_block. */ | |
f1e6e072 | 16000 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
edb3359d | 16001 | SYMBOL_INLINED (sym) = 1; |
481860b3 | 16002 | list_to_add = cu->list_in_scope; |
edb3359d | 16003 | break; |
34eaf542 TT |
16004 | case DW_TAG_template_value_param: |
16005 | suppress_add = 1; | |
16006 | /* Fall through. */ | |
72929c62 | 16007 | case DW_TAG_constant: |
c906108c | 16008 | case DW_TAG_variable: |
254e6b9e | 16009 | case DW_TAG_member: |
0963b4bd MS |
16010 | /* Compilation with minimal debug info may result in |
16011 | variables with missing type entries. Change the | |
16012 | misleading `void' type to something sensible. */ | |
c906108c | 16013 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_VOID) |
64c50499 | 16014 | SYMBOL_TYPE (sym) |
46bf5051 | 16015 | = objfile_type (objfile)->nodebug_data_symbol; |
64c50499 | 16016 | |
e142c38c | 16017 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
254e6b9e DE |
16018 | /* In the case of DW_TAG_member, we should only be called for |
16019 | static const members. */ | |
16020 | if (die->tag == DW_TAG_member) | |
16021 | { | |
3863f96c DE |
16022 | /* dwarf2_add_field uses die_is_declaration, |
16023 | so we do the same. */ | |
254e6b9e DE |
16024 | gdb_assert (die_is_declaration (die, cu)); |
16025 | gdb_assert (attr); | |
16026 | } | |
c906108c SS |
16027 | if (attr) |
16028 | { | |
e7c27a73 | 16029 | dwarf2_const_value (attr, sym, cu); |
e142c38c | 16030 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
e37fd15a | 16031 | if (!suppress_add) |
34eaf542 TT |
16032 | { |
16033 | if (attr2 && (DW_UNSND (attr2) != 0)) | |
e37fd15a | 16034 | list_to_add = &global_symbols; |
34eaf542 | 16035 | else |
e37fd15a | 16036 | list_to_add = cu->list_in_scope; |
34eaf542 | 16037 | } |
c906108c SS |
16038 | break; |
16039 | } | |
e142c38c | 16040 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
16041 | if (attr) |
16042 | { | |
e7c27a73 | 16043 | var_decode_location (attr, sym, cu); |
e142c38c | 16044 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
4357ac6c TT |
16045 | |
16046 | /* Fortran explicitly imports any global symbols to the local | |
16047 | scope by DW_TAG_common_block. */ | |
16048 | if (cu->language == language_fortran && die->parent | |
16049 | && die->parent->tag == DW_TAG_common_block) | |
16050 | attr2 = NULL; | |
16051 | ||
caac4577 JG |
16052 | if (SYMBOL_CLASS (sym) == LOC_STATIC |
16053 | && SYMBOL_VALUE_ADDRESS (sym) == 0 | |
16054 | && !dwarf2_per_objfile->has_section_at_zero) | |
16055 | { | |
16056 | /* When a static variable is eliminated by the linker, | |
16057 | the corresponding debug information is not stripped | |
16058 | out, but the variable address is set to null; | |
16059 | do not add such variables into symbol table. */ | |
16060 | } | |
16061 | else if (attr2 && (DW_UNSND (attr2) != 0)) | |
1c809c68 | 16062 | { |
f55ee35c JK |
16063 | /* Workaround gfortran PR debug/40040 - it uses |
16064 | DW_AT_location for variables in -fPIC libraries which may | |
16065 | get overriden by other libraries/executable and get | |
16066 | a different address. Resolve it by the minimal symbol | |
16067 | which may come from inferior's executable using copy | |
16068 | relocation. Make this workaround only for gfortran as for | |
16069 | other compilers GDB cannot guess the minimal symbol | |
16070 | Fortran mangling kind. */ | |
16071 | if (cu->language == language_fortran && die->parent | |
16072 | && die->parent->tag == DW_TAG_module | |
16073 | && cu->producer | |
16074 | && strncmp (cu->producer, "GNU Fortran ", 12) == 0) | |
f1e6e072 | 16075 | SYMBOL_ACLASS_INDEX (sym) = LOC_UNRESOLVED; |
f55ee35c | 16076 | |
1c809c68 TT |
16077 | /* A variable with DW_AT_external is never static, |
16078 | but it may be block-scoped. */ | |
16079 | list_to_add = (cu->list_in_scope == &file_symbols | |
16080 | ? &global_symbols : cu->list_in_scope); | |
1c809c68 | 16081 | } |
c906108c | 16082 | else |
e37fd15a | 16083 | list_to_add = cu->list_in_scope; |
c906108c SS |
16084 | } |
16085 | else | |
16086 | { | |
16087 | /* We do not know the address of this symbol. | |
c5aa993b JM |
16088 | If it is an external symbol and we have type information |
16089 | for it, enter the symbol as a LOC_UNRESOLVED symbol. | |
16090 | The address of the variable will then be determined from | |
16091 | the minimal symbol table whenever the variable is | |
16092 | referenced. */ | |
e142c38c | 16093 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
0971de02 TT |
16094 | |
16095 | /* Fortran explicitly imports any global symbols to the local | |
16096 | scope by DW_TAG_common_block. */ | |
16097 | if (cu->language == language_fortran && die->parent | |
16098 | && die->parent->tag == DW_TAG_common_block) | |
16099 | { | |
16100 | /* SYMBOL_CLASS doesn't matter here because | |
16101 | read_common_block is going to reset it. */ | |
16102 | if (!suppress_add) | |
16103 | list_to_add = cu->list_in_scope; | |
16104 | } | |
16105 | else if (attr2 && (DW_UNSND (attr2) != 0) | |
16106 | && dwarf2_attr (die, DW_AT_type, cu) != NULL) | |
c906108c | 16107 | { |
0fe7935b DJ |
16108 | /* A variable with DW_AT_external is never static, but it |
16109 | may be block-scoped. */ | |
16110 | list_to_add = (cu->list_in_scope == &file_symbols | |
16111 | ? &global_symbols : cu->list_in_scope); | |
16112 | ||
f1e6e072 | 16113 | SYMBOL_ACLASS_INDEX (sym) = LOC_UNRESOLVED; |
c906108c | 16114 | } |
442ddf59 JK |
16115 | else if (!die_is_declaration (die, cu)) |
16116 | { | |
16117 | /* Use the default LOC_OPTIMIZED_OUT class. */ | |
16118 | gdb_assert (SYMBOL_CLASS (sym) == LOC_OPTIMIZED_OUT); | |
e37fd15a SW |
16119 | if (!suppress_add) |
16120 | list_to_add = cu->list_in_scope; | |
442ddf59 | 16121 | } |
c906108c SS |
16122 | } |
16123 | break; | |
16124 | case DW_TAG_formal_parameter: | |
edb3359d DJ |
16125 | /* If we are inside a function, mark this as an argument. If |
16126 | not, we might be looking at an argument to an inlined function | |
16127 | when we do not have enough information to show inlined frames; | |
16128 | pretend it's a local variable in that case so that the user can | |
16129 | still see it. */ | |
16130 | if (context_stack_depth > 0 | |
16131 | && context_stack[context_stack_depth - 1].name != NULL) | |
16132 | SYMBOL_IS_ARGUMENT (sym) = 1; | |
e142c38c | 16133 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
16134 | if (attr) |
16135 | { | |
e7c27a73 | 16136 | var_decode_location (attr, sym, cu); |
c906108c | 16137 | } |
e142c38c | 16138 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
16139 | if (attr) |
16140 | { | |
e7c27a73 | 16141 | dwarf2_const_value (attr, sym, cu); |
c906108c | 16142 | } |
f346a30d | 16143 | |
e37fd15a | 16144 | list_to_add = cu->list_in_scope; |
c906108c SS |
16145 | break; |
16146 | case DW_TAG_unspecified_parameters: | |
16147 | /* From varargs functions; gdb doesn't seem to have any | |
16148 | interest in this information, so just ignore it for now. | |
16149 | (FIXME?) */ | |
16150 | break; | |
34eaf542 TT |
16151 | case DW_TAG_template_type_param: |
16152 | suppress_add = 1; | |
16153 | /* Fall through. */ | |
c906108c | 16154 | case DW_TAG_class_type: |
680b30c7 | 16155 | case DW_TAG_interface_type: |
c906108c SS |
16156 | case DW_TAG_structure_type: |
16157 | case DW_TAG_union_type: | |
72019c9c | 16158 | case DW_TAG_set_type: |
c906108c | 16159 | case DW_TAG_enumeration_type: |
f1e6e072 | 16160 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 16161 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c906108c | 16162 | |
63d06c5c | 16163 | { |
987504bb | 16164 | /* NOTE: carlton/2003-11-10: C++ and Java class symbols shouldn't |
63d06c5c DC |
16165 | really ever be static objects: otherwise, if you try |
16166 | to, say, break of a class's method and you're in a file | |
16167 | which doesn't mention that class, it won't work unless | |
16168 | the check for all static symbols in lookup_symbol_aux | |
16169 | saves you. See the OtherFileClass tests in | |
16170 | gdb.c++/namespace.exp. */ | |
16171 | ||
e37fd15a | 16172 | if (!suppress_add) |
34eaf542 | 16173 | { |
34eaf542 TT |
16174 | list_to_add = (cu->list_in_scope == &file_symbols |
16175 | && (cu->language == language_cplus | |
16176 | || cu->language == language_java) | |
16177 | ? &global_symbols : cu->list_in_scope); | |
63d06c5c | 16178 | |
64382290 TT |
16179 | /* The semantics of C++ state that "struct foo { |
16180 | ... }" also defines a typedef for "foo". A Java | |
16181 | class declaration also defines a typedef for the | |
16182 | class. */ | |
16183 | if (cu->language == language_cplus | |
16184 | || cu->language == language_java | |
16185 | || cu->language == language_ada) | |
16186 | { | |
16187 | /* The symbol's name is already allocated along | |
16188 | with this objfile, so we don't need to | |
16189 | duplicate it for the type. */ | |
16190 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) | |
16191 | TYPE_NAME (SYMBOL_TYPE (sym)) = SYMBOL_SEARCH_NAME (sym); | |
16192 | } | |
63d06c5c DC |
16193 | } |
16194 | } | |
c906108c SS |
16195 | break; |
16196 | case DW_TAG_typedef: | |
f1e6e072 | 16197 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
63d06c5c | 16198 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 16199 | list_to_add = cu->list_in_scope; |
63d06c5c | 16200 | break; |
c906108c | 16201 | case DW_TAG_base_type: |
a02abb62 | 16202 | case DW_TAG_subrange_type: |
f1e6e072 | 16203 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 16204 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 16205 | list_to_add = cu->list_in_scope; |
c906108c SS |
16206 | break; |
16207 | case DW_TAG_enumerator: | |
e142c38c | 16208 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
16209 | if (attr) |
16210 | { | |
e7c27a73 | 16211 | dwarf2_const_value (attr, sym, cu); |
c906108c | 16212 | } |
63d06c5c DC |
16213 | { |
16214 | /* NOTE: carlton/2003-11-10: See comment above in the | |
16215 | DW_TAG_class_type, etc. block. */ | |
16216 | ||
e142c38c | 16217 | list_to_add = (cu->list_in_scope == &file_symbols |
987504bb JJ |
16218 | && (cu->language == language_cplus |
16219 | || cu->language == language_java) | |
e142c38c | 16220 | ? &global_symbols : cu->list_in_scope); |
63d06c5c | 16221 | } |
c906108c | 16222 | break; |
5c4e30ca | 16223 | case DW_TAG_namespace: |
f1e6e072 | 16224 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
e37fd15a | 16225 | list_to_add = &global_symbols; |
5c4e30ca | 16226 | break; |
4357ac6c | 16227 | case DW_TAG_common_block: |
f1e6e072 | 16228 | SYMBOL_ACLASS_INDEX (sym) = LOC_COMMON_BLOCK; |
4357ac6c TT |
16229 | SYMBOL_DOMAIN (sym) = COMMON_BLOCK_DOMAIN; |
16230 | add_symbol_to_list (sym, cu->list_in_scope); | |
16231 | break; | |
c906108c SS |
16232 | default: |
16233 | /* Not a tag we recognize. Hopefully we aren't processing | |
16234 | trash data, but since we must specifically ignore things | |
16235 | we don't recognize, there is nothing else we should do at | |
0963b4bd | 16236 | this point. */ |
e2e0b3e5 | 16237 | complaint (&symfile_complaints, _("unsupported tag: '%s'"), |
4d3c2250 | 16238 | dwarf_tag_name (die->tag)); |
c906108c SS |
16239 | break; |
16240 | } | |
df8a16a1 | 16241 | |
e37fd15a SW |
16242 | if (suppress_add) |
16243 | { | |
16244 | sym->hash_next = objfile->template_symbols; | |
16245 | objfile->template_symbols = sym; | |
16246 | list_to_add = NULL; | |
16247 | } | |
16248 | ||
16249 | if (list_to_add != NULL) | |
16250 | add_symbol_to_list (sym, list_to_add); | |
16251 | ||
df8a16a1 DJ |
16252 | /* For the benefit of old versions of GCC, check for anonymous |
16253 | namespaces based on the demangled name. */ | |
4d4ec4e5 | 16254 | if (!cu->processing_has_namespace_info |
94af9270 | 16255 | && cu->language == language_cplus) |
a10964d1 | 16256 | cp_scan_for_anonymous_namespaces (sym, objfile); |
c906108c SS |
16257 | } |
16258 | return (sym); | |
16259 | } | |
16260 | ||
34eaf542 TT |
16261 | /* A wrapper for new_symbol_full that always allocates a new symbol. */ |
16262 | ||
16263 | static struct symbol * | |
16264 | new_symbol (struct die_info *die, struct type *type, struct dwarf2_cu *cu) | |
16265 | { | |
16266 | return new_symbol_full (die, type, cu, NULL); | |
16267 | } | |
16268 | ||
98bfdba5 PA |
16269 | /* Given an attr with a DW_FORM_dataN value in host byte order, |
16270 | zero-extend it as appropriate for the symbol's type. The DWARF | |
16271 | standard (v4) is not entirely clear about the meaning of using | |
16272 | DW_FORM_dataN for a constant with a signed type, where the type is | |
16273 | wider than the data. The conclusion of a discussion on the DWARF | |
16274 | list was that this is unspecified. We choose to always zero-extend | |
16275 | because that is the interpretation long in use by GCC. */ | |
c906108c | 16276 | |
98bfdba5 PA |
16277 | static gdb_byte * |
16278 | dwarf2_const_value_data (struct attribute *attr, struct type *type, | |
16279 | const char *name, struct obstack *obstack, | |
12df843f | 16280 | struct dwarf2_cu *cu, LONGEST *value, int bits) |
c906108c | 16281 | { |
e7c27a73 | 16282 | struct objfile *objfile = cu->objfile; |
e17a4113 UW |
16283 | enum bfd_endian byte_order = bfd_big_endian (objfile->obfd) ? |
16284 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE; | |
98bfdba5 PA |
16285 | LONGEST l = DW_UNSND (attr); |
16286 | ||
16287 | if (bits < sizeof (*value) * 8) | |
16288 | { | |
16289 | l &= ((LONGEST) 1 << bits) - 1; | |
16290 | *value = l; | |
16291 | } | |
16292 | else if (bits == sizeof (*value) * 8) | |
16293 | *value = l; | |
16294 | else | |
16295 | { | |
16296 | gdb_byte *bytes = obstack_alloc (obstack, bits / 8); | |
16297 | store_unsigned_integer (bytes, bits / 8, byte_order, l); | |
16298 | return bytes; | |
16299 | } | |
16300 | ||
16301 | return NULL; | |
16302 | } | |
16303 | ||
16304 | /* Read a constant value from an attribute. Either set *VALUE, or if | |
16305 | the value does not fit in *VALUE, set *BYTES - either already | |
16306 | allocated on the objfile obstack, or newly allocated on OBSTACK, | |
16307 | or, set *BATON, if we translated the constant to a location | |
16308 | expression. */ | |
16309 | ||
16310 | static void | |
16311 | dwarf2_const_value_attr (struct attribute *attr, struct type *type, | |
16312 | const char *name, struct obstack *obstack, | |
16313 | struct dwarf2_cu *cu, | |
12df843f | 16314 | LONGEST *value, gdb_byte **bytes, |
98bfdba5 PA |
16315 | struct dwarf2_locexpr_baton **baton) |
16316 | { | |
16317 | struct objfile *objfile = cu->objfile; | |
16318 | struct comp_unit_head *cu_header = &cu->header; | |
c906108c | 16319 | struct dwarf_block *blk; |
98bfdba5 PA |
16320 | enum bfd_endian byte_order = (bfd_big_endian (objfile->obfd) ? |
16321 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); | |
16322 | ||
16323 | *value = 0; | |
16324 | *bytes = NULL; | |
16325 | *baton = NULL; | |
c906108c SS |
16326 | |
16327 | switch (attr->form) | |
16328 | { | |
16329 | case DW_FORM_addr: | |
3019eac3 | 16330 | case DW_FORM_GNU_addr_index: |
ac56253d | 16331 | { |
ac56253d TT |
16332 | gdb_byte *data; |
16333 | ||
98bfdba5 PA |
16334 | if (TYPE_LENGTH (type) != cu_header->addr_size) |
16335 | dwarf2_const_value_length_mismatch_complaint (name, | |
ac56253d | 16336 | cu_header->addr_size, |
98bfdba5 | 16337 | TYPE_LENGTH (type)); |
ac56253d TT |
16338 | /* Symbols of this form are reasonably rare, so we just |
16339 | piggyback on the existing location code rather than writing | |
16340 | a new implementation of symbol_computed_ops. */ | |
98bfdba5 PA |
16341 | *baton = obstack_alloc (&objfile->objfile_obstack, |
16342 | sizeof (struct dwarf2_locexpr_baton)); | |
16343 | (*baton)->per_cu = cu->per_cu; | |
16344 | gdb_assert ((*baton)->per_cu); | |
ac56253d | 16345 | |
98bfdba5 PA |
16346 | (*baton)->size = 2 + cu_header->addr_size; |
16347 | data = obstack_alloc (&objfile->objfile_obstack, (*baton)->size); | |
16348 | (*baton)->data = data; | |
ac56253d TT |
16349 | |
16350 | data[0] = DW_OP_addr; | |
16351 | store_unsigned_integer (&data[1], cu_header->addr_size, | |
16352 | byte_order, DW_ADDR (attr)); | |
16353 | data[cu_header->addr_size + 1] = DW_OP_stack_value; | |
ac56253d | 16354 | } |
c906108c | 16355 | break; |
4ac36638 | 16356 | case DW_FORM_string: |
93b5768b | 16357 | case DW_FORM_strp: |
3019eac3 | 16358 | case DW_FORM_GNU_str_index: |
36586728 | 16359 | case DW_FORM_GNU_strp_alt: |
98bfdba5 PA |
16360 | /* DW_STRING is already allocated on the objfile obstack, point |
16361 | directly to it. */ | |
16362 | *bytes = (gdb_byte *) DW_STRING (attr); | |
93b5768b | 16363 | break; |
c906108c SS |
16364 | case DW_FORM_block1: |
16365 | case DW_FORM_block2: | |
16366 | case DW_FORM_block4: | |
16367 | case DW_FORM_block: | |
2dc7f7b3 | 16368 | case DW_FORM_exprloc: |
c906108c | 16369 | blk = DW_BLOCK (attr); |
98bfdba5 PA |
16370 | if (TYPE_LENGTH (type) != blk->size) |
16371 | dwarf2_const_value_length_mismatch_complaint (name, blk->size, | |
16372 | TYPE_LENGTH (type)); | |
16373 | *bytes = blk->data; | |
c906108c | 16374 | break; |
2df3850c JM |
16375 | |
16376 | /* The DW_AT_const_value attributes are supposed to carry the | |
16377 | symbol's value "represented as it would be on the target | |
16378 | architecture." By the time we get here, it's already been | |
16379 | converted to host endianness, so we just need to sign- or | |
16380 | zero-extend it as appropriate. */ | |
16381 | case DW_FORM_data1: | |
3e43a32a MS |
16382 | *bytes = dwarf2_const_value_data (attr, type, name, |
16383 | obstack, cu, value, 8); | |
2df3850c | 16384 | break; |
c906108c | 16385 | case DW_FORM_data2: |
3e43a32a MS |
16386 | *bytes = dwarf2_const_value_data (attr, type, name, |
16387 | obstack, cu, value, 16); | |
2df3850c | 16388 | break; |
c906108c | 16389 | case DW_FORM_data4: |
3e43a32a MS |
16390 | *bytes = dwarf2_const_value_data (attr, type, name, |
16391 | obstack, cu, value, 32); | |
2df3850c | 16392 | break; |
c906108c | 16393 | case DW_FORM_data8: |
3e43a32a MS |
16394 | *bytes = dwarf2_const_value_data (attr, type, name, |
16395 | obstack, cu, value, 64); | |
2df3850c JM |
16396 | break; |
16397 | ||
c906108c | 16398 | case DW_FORM_sdata: |
98bfdba5 | 16399 | *value = DW_SND (attr); |
2df3850c JM |
16400 | break; |
16401 | ||
c906108c | 16402 | case DW_FORM_udata: |
98bfdba5 | 16403 | *value = DW_UNSND (attr); |
c906108c | 16404 | break; |
2df3850c | 16405 | |
c906108c | 16406 | default: |
4d3c2250 | 16407 | complaint (&symfile_complaints, |
e2e0b3e5 | 16408 | _("unsupported const value attribute form: '%s'"), |
4d3c2250 | 16409 | dwarf_form_name (attr->form)); |
98bfdba5 | 16410 | *value = 0; |
c906108c SS |
16411 | break; |
16412 | } | |
16413 | } | |
16414 | ||
2df3850c | 16415 | |
98bfdba5 PA |
16416 | /* Copy constant value from an attribute to a symbol. */ |
16417 | ||
2df3850c | 16418 | static void |
98bfdba5 PA |
16419 | dwarf2_const_value (struct attribute *attr, struct symbol *sym, |
16420 | struct dwarf2_cu *cu) | |
2df3850c | 16421 | { |
98bfdba5 PA |
16422 | struct objfile *objfile = cu->objfile; |
16423 | struct comp_unit_head *cu_header = &cu->header; | |
12df843f | 16424 | LONGEST value; |
98bfdba5 PA |
16425 | gdb_byte *bytes; |
16426 | struct dwarf2_locexpr_baton *baton; | |
2df3850c | 16427 | |
98bfdba5 PA |
16428 | dwarf2_const_value_attr (attr, SYMBOL_TYPE (sym), |
16429 | SYMBOL_PRINT_NAME (sym), | |
16430 | &objfile->objfile_obstack, cu, | |
16431 | &value, &bytes, &baton); | |
2df3850c | 16432 | |
98bfdba5 PA |
16433 | if (baton != NULL) |
16434 | { | |
98bfdba5 | 16435 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 16436 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
98bfdba5 PA |
16437 | } |
16438 | else if (bytes != NULL) | |
16439 | { | |
16440 | SYMBOL_VALUE_BYTES (sym) = bytes; | |
f1e6e072 | 16441 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST_BYTES; |
98bfdba5 PA |
16442 | } |
16443 | else | |
16444 | { | |
16445 | SYMBOL_VALUE (sym) = value; | |
f1e6e072 | 16446 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
98bfdba5 | 16447 | } |
2df3850c JM |
16448 | } |
16449 | ||
c906108c SS |
16450 | /* Return the type of the die in question using its DW_AT_type attribute. */ |
16451 | ||
16452 | static struct type * | |
e7c27a73 | 16453 | die_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16454 | { |
c906108c | 16455 | struct attribute *type_attr; |
c906108c | 16456 | |
e142c38c | 16457 | type_attr = dwarf2_attr (die, DW_AT_type, cu); |
c906108c SS |
16458 | if (!type_attr) |
16459 | { | |
16460 | /* A missing DW_AT_type represents a void type. */ | |
46bf5051 | 16461 | return objfile_type (cu->objfile)->builtin_void; |
c906108c | 16462 | } |
348e048f | 16463 | |
673bfd45 | 16464 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
16465 | } |
16466 | ||
b4ba55a1 JB |
16467 | /* True iff CU's producer generates GNAT Ada auxiliary information |
16468 | that allows to find parallel types through that information instead | |
16469 | of having to do expensive parallel lookups by type name. */ | |
16470 | ||
16471 | static int | |
16472 | need_gnat_info (struct dwarf2_cu *cu) | |
16473 | { | |
16474 | /* FIXME: brobecker/2010-10-12: As of now, only the AdaCore version | |
16475 | of GNAT produces this auxiliary information, without any indication | |
16476 | that it is produced. Part of enhancing the FSF version of GNAT | |
16477 | to produce that information will be to put in place an indicator | |
16478 | that we can use in order to determine whether the descriptive type | |
16479 | info is available or not. One suggestion that has been made is | |
16480 | to use a new attribute, attached to the CU die. For now, assume | |
16481 | that the descriptive type info is not available. */ | |
16482 | return 0; | |
16483 | } | |
16484 | ||
b4ba55a1 JB |
16485 | /* Return the auxiliary type of the die in question using its |
16486 | DW_AT_GNAT_descriptive_type attribute. Returns NULL if the | |
16487 | attribute is not present. */ | |
16488 | ||
16489 | static struct type * | |
16490 | die_descriptive_type (struct die_info *die, struct dwarf2_cu *cu) | |
16491 | { | |
b4ba55a1 | 16492 | struct attribute *type_attr; |
b4ba55a1 JB |
16493 | |
16494 | type_attr = dwarf2_attr (die, DW_AT_GNAT_descriptive_type, cu); | |
16495 | if (!type_attr) | |
16496 | return NULL; | |
16497 | ||
673bfd45 | 16498 | return lookup_die_type (die, type_attr, cu); |
b4ba55a1 JB |
16499 | } |
16500 | ||
16501 | /* If DIE has a descriptive_type attribute, then set the TYPE's | |
16502 | descriptive type accordingly. */ | |
16503 | ||
16504 | static void | |
16505 | set_descriptive_type (struct type *type, struct die_info *die, | |
16506 | struct dwarf2_cu *cu) | |
16507 | { | |
16508 | struct type *descriptive_type = die_descriptive_type (die, cu); | |
16509 | ||
16510 | if (descriptive_type) | |
16511 | { | |
16512 | ALLOCATE_GNAT_AUX_TYPE (type); | |
16513 | TYPE_DESCRIPTIVE_TYPE (type) = descriptive_type; | |
16514 | } | |
16515 | } | |
16516 | ||
c906108c SS |
16517 | /* Return the containing type of the die in question using its |
16518 | DW_AT_containing_type attribute. */ | |
16519 | ||
16520 | static struct type * | |
e7c27a73 | 16521 | die_containing_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16522 | { |
c906108c | 16523 | struct attribute *type_attr; |
c906108c | 16524 | |
e142c38c | 16525 | type_attr = dwarf2_attr (die, DW_AT_containing_type, cu); |
33ac96f0 JK |
16526 | if (!type_attr) |
16527 | error (_("Dwarf Error: Problem turning containing type into gdb type " | |
16528 | "[in module %s]"), cu->objfile->name); | |
16529 | ||
673bfd45 | 16530 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
16531 | } |
16532 | ||
673bfd45 DE |
16533 | /* Look up the type of DIE in CU using its type attribute ATTR. |
16534 | If there is no type substitute an error marker. */ | |
16535 | ||
c906108c | 16536 | static struct type * |
673bfd45 DE |
16537 | lookup_die_type (struct die_info *die, struct attribute *attr, |
16538 | struct dwarf2_cu *cu) | |
c906108c | 16539 | { |
bb5ed363 | 16540 | struct objfile *objfile = cu->objfile; |
f792889a DJ |
16541 | struct type *this_type; |
16542 | ||
673bfd45 DE |
16543 | /* First see if we have it cached. */ |
16544 | ||
36586728 TT |
16545 | if (attr->form == DW_FORM_GNU_ref_alt) |
16546 | { | |
16547 | struct dwarf2_per_cu_data *per_cu; | |
16548 | sect_offset offset = dwarf2_get_ref_die_offset (attr); | |
16549 | ||
16550 | per_cu = dwarf2_find_containing_comp_unit (offset, 1, cu->objfile); | |
16551 | this_type = get_die_type_at_offset (offset, per_cu); | |
16552 | } | |
16553 | else if (is_ref_attr (attr)) | |
673bfd45 | 16554 | { |
b64f50a1 | 16555 | sect_offset offset = dwarf2_get_ref_die_offset (attr); |
673bfd45 DE |
16556 | |
16557 | this_type = get_die_type_at_offset (offset, cu->per_cu); | |
16558 | } | |
55f1336d | 16559 | else if (attr->form == DW_FORM_ref_sig8) |
673bfd45 DE |
16560 | { |
16561 | struct signatured_type *sig_type = DW_SIGNATURED_TYPE (attr); | |
673bfd45 DE |
16562 | |
16563 | /* sig_type will be NULL if the signatured type is missing from | |
16564 | the debug info. */ | |
16565 | if (sig_type == NULL) | |
16566 | error (_("Dwarf Error: Cannot find signatured DIE referenced from DIE " | |
16567 | "at 0x%x [in module %s]"), | |
b64f50a1 | 16568 | die->offset.sect_off, objfile->name); |
673bfd45 | 16569 | |
3019eac3 DE |
16570 | gdb_assert (sig_type->per_cu.is_debug_types); |
16571 | /* If we haven't filled in type_offset_in_section yet, then we | |
16572 | haven't read the type in yet. */ | |
16573 | this_type = NULL; | |
16574 | if (sig_type->type_offset_in_section.sect_off != 0) | |
16575 | { | |
16576 | this_type = | |
16577 | get_die_type_at_offset (sig_type->type_offset_in_section, | |
16578 | &sig_type->per_cu); | |
16579 | } | |
673bfd45 DE |
16580 | } |
16581 | else | |
16582 | { | |
16583 | dump_die_for_error (die); | |
16584 | error (_("Dwarf Error: Bad type attribute %s [in module %s]"), | |
bb5ed363 | 16585 | dwarf_attr_name (attr->name), objfile->name); |
673bfd45 DE |
16586 | } |
16587 | ||
16588 | /* If not cached we need to read it in. */ | |
16589 | ||
16590 | if (this_type == NULL) | |
16591 | { | |
16592 | struct die_info *type_die; | |
16593 | struct dwarf2_cu *type_cu = cu; | |
16594 | ||
16595 | type_die = follow_die_ref_or_sig (die, attr, &type_cu); | |
3019eac3 DE |
16596 | /* If we found the type now, it's probably because the type came |
16597 | from an inter-CU reference and the type's CU got expanded before | |
16598 | ours. */ | |
16599 | this_type = get_die_type (type_die, type_cu); | |
16600 | if (this_type == NULL) | |
16601 | this_type = read_type_die_1 (type_die, type_cu); | |
673bfd45 DE |
16602 | } |
16603 | ||
16604 | /* If we still don't have a type use an error marker. */ | |
16605 | ||
16606 | if (this_type == NULL) | |
c906108c | 16607 | { |
b00fdb78 TT |
16608 | char *message, *saved; |
16609 | ||
16610 | /* read_type_die already issued a complaint. */ | |
16611 | message = xstrprintf (_("<unknown type in %s, CU 0x%x, DIE 0x%x>"), | |
bb5ed363 | 16612 | objfile->name, |
b64f50a1 JK |
16613 | cu->header.offset.sect_off, |
16614 | die->offset.sect_off); | |
bb5ed363 | 16615 | saved = obstack_copy0 (&objfile->objfile_obstack, |
b00fdb78 TT |
16616 | message, strlen (message)); |
16617 | xfree (message); | |
16618 | ||
bb5ed363 | 16619 | this_type = init_type (TYPE_CODE_ERROR, 0, 0, saved, objfile); |
c906108c | 16620 | } |
673bfd45 | 16621 | |
f792889a | 16622 | return this_type; |
c906108c SS |
16623 | } |
16624 | ||
673bfd45 DE |
16625 | /* Return the type in DIE, CU. |
16626 | Returns NULL for invalid types. | |
16627 | ||
16628 | This first does a lookup in the appropriate type_hash table, | |
16629 | and only reads the die in if necessary. | |
16630 | ||
16631 | NOTE: This can be called when reading in partial or full symbols. */ | |
16632 | ||
f792889a | 16633 | static struct type * |
e7c27a73 | 16634 | read_type_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16635 | { |
f792889a DJ |
16636 | struct type *this_type; |
16637 | ||
16638 | this_type = get_die_type (die, cu); | |
16639 | if (this_type) | |
16640 | return this_type; | |
16641 | ||
673bfd45 DE |
16642 | return read_type_die_1 (die, cu); |
16643 | } | |
16644 | ||
16645 | /* Read the type in DIE, CU. | |
16646 | Returns NULL for invalid types. */ | |
16647 | ||
16648 | static struct type * | |
16649 | read_type_die_1 (struct die_info *die, struct dwarf2_cu *cu) | |
16650 | { | |
16651 | struct type *this_type = NULL; | |
16652 | ||
c906108c SS |
16653 | switch (die->tag) |
16654 | { | |
16655 | case DW_TAG_class_type: | |
680b30c7 | 16656 | case DW_TAG_interface_type: |
c906108c SS |
16657 | case DW_TAG_structure_type: |
16658 | case DW_TAG_union_type: | |
f792889a | 16659 | this_type = read_structure_type (die, cu); |
c906108c SS |
16660 | break; |
16661 | case DW_TAG_enumeration_type: | |
f792889a | 16662 | this_type = read_enumeration_type (die, cu); |
c906108c SS |
16663 | break; |
16664 | case DW_TAG_subprogram: | |
16665 | case DW_TAG_subroutine_type: | |
edb3359d | 16666 | case DW_TAG_inlined_subroutine: |
f792889a | 16667 | this_type = read_subroutine_type (die, cu); |
c906108c SS |
16668 | break; |
16669 | case DW_TAG_array_type: | |
f792889a | 16670 | this_type = read_array_type (die, cu); |
c906108c | 16671 | break; |
72019c9c | 16672 | case DW_TAG_set_type: |
f792889a | 16673 | this_type = read_set_type (die, cu); |
72019c9c | 16674 | break; |
c906108c | 16675 | case DW_TAG_pointer_type: |
f792889a | 16676 | this_type = read_tag_pointer_type (die, cu); |
c906108c SS |
16677 | break; |
16678 | case DW_TAG_ptr_to_member_type: | |
f792889a | 16679 | this_type = read_tag_ptr_to_member_type (die, cu); |
c906108c SS |
16680 | break; |
16681 | case DW_TAG_reference_type: | |
f792889a | 16682 | this_type = read_tag_reference_type (die, cu); |
c906108c SS |
16683 | break; |
16684 | case DW_TAG_const_type: | |
f792889a | 16685 | this_type = read_tag_const_type (die, cu); |
c906108c SS |
16686 | break; |
16687 | case DW_TAG_volatile_type: | |
f792889a | 16688 | this_type = read_tag_volatile_type (die, cu); |
c906108c | 16689 | break; |
06d66ee9 TT |
16690 | case DW_TAG_restrict_type: |
16691 | this_type = read_tag_restrict_type (die, cu); | |
16692 | break; | |
c906108c | 16693 | case DW_TAG_string_type: |
f792889a | 16694 | this_type = read_tag_string_type (die, cu); |
c906108c SS |
16695 | break; |
16696 | case DW_TAG_typedef: | |
f792889a | 16697 | this_type = read_typedef (die, cu); |
c906108c | 16698 | break; |
a02abb62 | 16699 | case DW_TAG_subrange_type: |
f792889a | 16700 | this_type = read_subrange_type (die, cu); |
a02abb62 | 16701 | break; |
c906108c | 16702 | case DW_TAG_base_type: |
f792889a | 16703 | this_type = read_base_type (die, cu); |
c906108c | 16704 | break; |
81a17f79 | 16705 | case DW_TAG_unspecified_type: |
f792889a | 16706 | this_type = read_unspecified_type (die, cu); |
81a17f79 | 16707 | break; |
0114d602 DJ |
16708 | case DW_TAG_namespace: |
16709 | this_type = read_namespace_type (die, cu); | |
16710 | break; | |
f55ee35c JK |
16711 | case DW_TAG_module: |
16712 | this_type = read_module_type (die, cu); | |
16713 | break; | |
c906108c | 16714 | default: |
3e43a32a MS |
16715 | complaint (&symfile_complaints, |
16716 | _("unexpected tag in read_type_die: '%s'"), | |
4d3c2250 | 16717 | dwarf_tag_name (die->tag)); |
c906108c SS |
16718 | break; |
16719 | } | |
63d06c5c | 16720 | |
f792889a | 16721 | return this_type; |
63d06c5c DC |
16722 | } |
16723 | ||
abc72ce4 DE |
16724 | /* See if we can figure out if the class lives in a namespace. We do |
16725 | this by looking for a member function; its demangled name will | |
16726 | contain namespace info, if there is any. | |
16727 | Return the computed name or NULL. | |
16728 | Space for the result is allocated on the objfile's obstack. | |
16729 | This is the full-die version of guess_partial_die_structure_name. | |
16730 | In this case we know DIE has no useful parent. */ | |
16731 | ||
16732 | static char * | |
16733 | guess_full_die_structure_name (struct die_info *die, struct dwarf2_cu *cu) | |
16734 | { | |
16735 | struct die_info *spec_die; | |
16736 | struct dwarf2_cu *spec_cu; | |
16737 | struct die_info *child; | |
16738 | ||
16739 | spec_cu = cu; | |
16740 | spec_die = die_specification (die, &spec_cu); | |
16741 | if (spec_die != NULL) | |
16742 | { | |
16743 | die = spec_die; | |
16744 | cu = spec_cu; | |
16745 | } | |
16746 | ||
16747 | for (child = die->child; | |
16748 | child != NULL; | |
16749 | child = child->sibling) | |
16750 | { | |
16751 | if (child->tag == DW_TAG_subprogram) | |
16752 | { | |
16753 | struct attribute *attr; | |
16754 | ||
16755 | attr = dwarf2_attr (child, DW_AT_linkage_name, cu); | |
16756 | if (attr == NULL) | |
16757 | attr = dwarf2_attr (child, DW_AT_MIPS_linkage_name, cu); | |
16758 | if (attr != NULL) | |
16759 | { | |
16760 | char *actual_name | |
16761 | = language_class_name_from_physname (cu->language_defn, | |
16762 | DW_STRING (attr)); | |
16763 | char *name = NULL; | |
16764 | ||
16765 | if (actual_name != NULL) | |
16766 | { | |
15d034d0 | 16767 | const char *die_name = dwarf2_name (die, cu); |
abc72ce4 DE |
16768 | |
16769 | if (die_name != NULL | |
16770 | && strcmp (die_name, actual_name) != 0) | |
16771 | { | |
16772 | /* Strip off the class name from the full name. | |
16773 | We want the prefix. */ | |
16774 | int die_name_len = strlen (die_name); | |
16775 | int actual_name_len = strlen (actual_name); | |
16776 | ||
16777 | /* Test for '::' as a sanity check. */ | |
16778 | if (actual_name_len > die_name_len + 2 | |
3e43a32a MS |
16779 | && actual_name[actual_name_len |
16780 | - die_name_len - 1] == ':') | |
abc72ce4 | 16781 | name = |
10f0c4bb TT |
16782 | obstack_copy0 (&cu->objfile->objfile_obstack, |
16783 | actual_name, | |
16784 | actual_name_len - die_name_len - 2); | |
abc72ce4 DE |
16785 | } |
16786 | } | |
16787 | xfree (actual_name); | |
16788 | return name; | |
16789 | } | |
16790 | } | |
16791 | } | |
16792 | ||
16793 | return NULL; | |
16794 | } | |
16795 | ||
96408a79 SA |
16796 | /* GCC might emit a nameless typedef that has a linkage name. Determine the |
16797 | prefix part in such case. See | |
16798 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
16799 | ||
16800 | static char * | |
16801 | anonymous_struct_prefix (struct die_info *die, struct dwarf2_cu *cu) | |
16802 | { | |
16803 | struct attribute *attr; | |
16804 | char *base; | |
16805 | ||
16806 | if (die->tag != DW_TAG_class_type && die->tag != DW_TAG_interface_type | |
16807 | && die->tag != DW_TAG_structure_type && die->tag != DW_TAG_union_type) | |
16808 | return NULL; | |
16809 | ||
16810 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
16811 | if (attr != NULL && DW_STRING (attr) != NULL) | |
16812 | return NULL; | |
16813 | ||
16814 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
16815 | if (attr == NULL) | |
16816 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
16817 | if (attr == NULL || DW_STRING (attr) == NULL) | |
16818 | return NULL; | |
16819 | ||
16820 | /* dwarf2_name had to be already called. */ | |
16821 | gdb_assert (DW_STRING_IS_CANONICAL (attr)); | |
16822 | ||
16823 | /* Strip the base name, keep any leading namespaces/classes. */ | |
16824 | base = strrchr (DW_STRING (attr), ':'); | |
16825 | if (base == NULL || base == DW_STRING (attr) || base[-1] != ':') | |
16826 | return ""; | |
16827 | ||
10f0c4bb TT |
16828 | return obstack_copy0 (&cu->objfile->objfile_obstack, |
16829 | DW_STRING (attr), &base[-1] - DW_STRING (attr)); | |
96408a79 SA |
16830 | } |
16831 | ||
fdde2d81 | 16832 | /* Return the name of the namespace/class that DIE is defined within, |
0114d602 | 16833 | or "" if we can't tell. The caller should not xfree the result. |
fdde2d81 | 16834 | |
0114d602 DJ |
16835 | For example, if we're within the method foo() in the following |
16836 | code: | |
16837 | ||
16838 | namespace N { | |
16839 | class C { | |
16840 | void foo () { | |
16841 | } | |
16842 | }; | |
16843 | } | |
16844 | ||
16845 | then determine_prefix on foo's die will return "N::C". */ | |
fdde2d81 | 16846 | |
0d5cff50 | 16847 | static const char * |
e142c38c | 16848 | determine_prefix (struct die_info *die, struct dwarf2_cu *cu) |
63d06c5c | 16849 | { |
0114d602 DJ |
16850 | struct die_info *parent, *spec_die; |
16851 | struct dwarf2_cu *spec_cu; | |
16852 | struct type *parent_type; | |
96408a79 | 16853 | char *retval; |
63d06c5c | 16854 | |
f55ee35c JK |
16855 | if (cu->language != language_cplus && cu->language != language_java |
16856 | && cu->language != language_fortran) | |
0114d602 DJ |
16857 | return ""; |
16858 | ||
96408a79 SA |
16859 | retval = anonymous_struct_prefix (die, cu); |
16860 | if (retval) | |
16861 | return retval; | |
16862 | ||
0114d602 DJ |
16863 | /* We have to be careful in the presence of DW_AT_specification. |
16864 | For example, with GCC 3.4, given the code | |
16865 | ||
16866 | namespace N { | |
16867 | void foo() { | |
16868 | // Definition of N::foo. | |
16869 | } | |
16870 | } | |
16871 | ||
16872 | then we'll have a tree of DIEs like this: | |
16873 | ||
16874 | 1: DW_TAG_compile_unit | |
16875 | 2: DW_TAG_namespace // N | |
16876 | 3: DW_TAG_subprogram // declaration of N::foo | |
16877 | 4: DW_TAG_subprogram // definition of N::foo | |
16878 | DW_AT_specification // refers to die #3 | |
16879 | ||
16880 | Thus, when processing die #4, we have to pretend that we're in | |
16881 | the context of its DW_AT_specification, namely the contex of die | |
16882 | #3. */ | |
16883 | spec_cu = cu; | |
16884 | spec_die = die_specification (die, &spec_cu); | |
16885 | if (spec_die == NULL) | |
16886 | parent = die->parent; | |
16887 | else | |
63d06c5c | 16888 | { |
0114d602 DJ |
16889 | parent = spec_die->parent; |
16890 | cu = spec_cu; | |
63d06c5c | 16891 | } |
0114d602 DJ |
16892 | |
16893 | if (parent == NULL) | |
16894 | return ""; | |
98bfdba5 PA |
16895 | else if (parent->building_fullname) |
16896 | { | |
16897 | const char *name; | |
16898 | const char *parent_name; | |
16899 | ||
16900 | /* It has been seen on RealView 2.2 built binaries, | |
16901 | DW_TAG_template_type_param types actually _defined_ as | |
16902 | children of the parent class: | |
16903 | ||
16904 | enum E {}; | |
16905 | template class <class Enum> Class{}; | |
16906 | Class<enum E> class_e; | |
16907 | ||
16908 | 1: DW_TAG_class_type (Class) | |
16909 | 2: DW_TAG_enumeration_type (E) | |
16910 | 3: DW_TAG_enumerator (enum1:0) | |
16911 | 3: DW_TAG_enumerator (enum2:1) | |
16912 | ... | |
16913 | 2: DW_TAG_template_type_param | |
16914 | DW_AT_type DW_FORM_ref_udata (E) | |
16915 | ||
16916 | Besides being broken debug info, it can put GDB into an | |
16917 | infinite loop. Consider: | |
16918 | ||
16919 | When we're building the full name for Class<E>, we'll start | |
16920 | at Class, and go look over its template type parameters, | |
16921 | finding E. We'll then try to build the full name of E, and | |
16922 | reach here. We're now trying to build the full name of E, | |
16923 | and look over the parent DIE for containing scope. In the | |
16924 | broken case, if we followed the parent DIE of E, we'd again | |
16925 | find Class, and once again go look at its template type | |
16926 | arguments, etc., etc. Simply don't consider such parent die | |
16927 | as source-level parent of this die (it can't be, the language | |
16928 | doesn't allow it), and break the loop here. */ | |
16929 | name = dwarf2_name (die, cu); | |
16930 | parent_name = dwarf2_name (parent, cu); | |
16931 | complaint (&symfile_complaints, | |
16932 | _("template param type '%s' defined within parent '%s'"), | |
16933 | name ? name : "<unknown>", | |
16934 | parent_name ? parent_name : "<unknown>"); | |
16935 | return ""; | |
16936 | } | |
63d06c5c | 16937 | else |
0114d602 DJ |
16938 | switch (parent->tag) |
16939 | { | |
63d06c5c | 16940 | case DW_TAG_namespace: |
0114d602 | 16941 | parent_type = read_type_die (parent, cu); |
acebe513 UW |
16942 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
16943 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
16944 | Work around this problem here. */ | |
16945 | if (cu->language == language_cplus | |
16946 | && strcmp (TYPE_TAG_NAME (parent_type), "::") == 0) | |
16947 | return ""; | |
0114d602 DJ |
16948 | /* We give a name to even anonymous namespaces. */ |
16949 | return TYPE_TAG_NAME (parent_type); | |
63d06c5c | 16950 | case DW_TAG_class_type: |
680b30c7 | 16951 | case DW_TAG_interface_type: |
63d06c5c | 16952 | case DW_TAG_structure_type: |
0114d602 | 16953 | case DW_TAG_union_type: |
f55ee35c | 16954 | case DW_TAG_module: |
0114d602 DJ |
16955 | parent_type = read_type_die (parent, cu); |
16956 | if (TYPE_TAG_NAME (parent_type) != NULL) | |
16957 | return TYPE_TAG_NAME (parent_type); | |
16958 | else | |
16959 | /* An anonymous structure is only allowed non-static data | |
16960 | members; no typedefs, no member functions, et cetera. | |
16961 | So it does not need a prefix. */ | |
16962 | return ""; | |
abc72ce4 | 16963 | case DW_TAG_compile_unit: |
95554aad | 16964 | case DW_TAG_partial_unit: |
abc72ce4 DE |
16965 | /* gcc-4.5 -gdwarf-4 can drop the enclosing namespace. Cope. */ |
16966 | if (cu->language == language_cplus | |
8b70b953 | 16967 | && !VEC_empty (dwarf2_section_info_def, dwarf2_per_objfile->types) |
abc72ce4 DE |
16968 | && die->child != NULL |
16969 | && (die->tag == DW_TAG_class_type | |
16970 | || die->tag == DW_TAG_structure_type | |
16971 | || die->tag == DW_TAG_union_type)) | |
16972 | { | |
16973 | char *name = guess_full_die_structure_name (die, cu); | |
16974 | if (name != NULL) | |
16975 | return name; | |
16976 | } | |
16977 | return ""; | |
63d06c5c | 16978 | default: |
8176b9b8 | 16979 | return determine_prefix (parent, cu); |
63d06c5c | 16980 | } |
63d06c5c DC |
16981 | } |
16982 | ||
3e43a32a MS |
16983 | /* Return a newly-allocated string formed by concatenating PREFIX and SUFFIX |
16984 | with appropriate separator. If PREFIX or SUFFIX is NULL or empty, then | |
16985 | simply copy the SUFFIX or PREFIX, respectively. If OBS is non-null, perform | |
16986 | an obconcat, otherwise allocate storage for the result. The CU argument is | |
16987 | used to determine the language and hence, the appropriate separator. */ | |
987504bb | 16988 | |
f55ee35c | 16989 | #define MAX_SEP_LEN 7 /* strlen ("__") + strlen ("_MOD_") */ |
63d06c5c DC |
16990 | |
16991 | static char * | |
f55ee35c JK |
16992 | typename_concat (struct obstack *obs, const char *prefix, const char *suffix, |
16993 | int physname, struct dwarf2_cu *cu) | |
63d06c5c | 16994 | { |
f55ee35c | 16995 | const char *lead = ""; |
5c315b68 | 16996 | const char *sep; |
63d06c5c | 16997 | |
3e43a32a MS |
16998 | if (suffix == NULL || suffix[0] == '\0' |
16999 | || prefix == NULL || prefix[0] == '\0') | |
987504bb JJ |
17000 | sep = ""; |
17001 | else if (cu->language == language_java) | |
17002 | sep = "."; | |
f55ee35c JK |
17003 | else if (cu->language == language_fortran && physname) |
17004 | { | |
17005 | /* This is gfortran specific mangling. Normally DW_AT_linkage_name or | |
17006 | DW_AT_MIPS_linkage_name is preferred and used instead. */ | |
17007 | ||
17008 | lead = "__"; | |
17009 | sep = "_MOD_"; | |
17010 | } | |
987504bb JJ |
17011 | else |
17012 | sep = "::"; | |
63d06c5c | 17013 | |
6dd47d34 DE |
17014 | if (prefix == NULL) |
17015 | prefix = ""; | |
17016 | if (suffix == NULL) | |
17017 | suffix = ""; | |
17018 | ||
987504bb JJ |
17019 | if (obs == NULL) |
17020 | { | |
3e43a32a MS |
17021 | char *retval |
17022 | = xmalloc (strlen (prefix) + MAX_SEP_LEN + strlen (suffix) + 1); | |
9a619af0 | 17023 | |
f55ee35c JK |
17024 | strcpy (retval, lead); |
17025 | strcat (retval, prefix); | |
6dd47d34 DE |
17026 | strcat (retval, sep); |
17027 | strcat (retval, suffix); | |
63d06c5c DC |
17028 | return retval; |
17029 | } | |
987504bb JJ |
17030 | else |
17031 | { | |
17032 | /* We have an obstack. */ | |
f55ee35c | 17033 | return obconcat (obs, lead, prefix, sep, suffix, (char *) NULL); |
987504bb | 17034 | } |
63d06c5c DC |
17035 | } |
17036 | ||
c906108c SS |
17037 | /* Return sibling of die, NULL if no sibling. */ |
17038 | ||
f9aca02d | 17039 | static struct die_info * |
fba45db2 | 17040 | sibling_die (struct die_info *die) |
c906108c | 17041 | { |
639d11d3 | 17042 | return die->sibling; |
c906108c SS |
17043 | } |
17044 | ||
71c25dea TT |
17045 | /* Get name of a die, return NULL if not found. */ |
17046 | ||
15d034d0 TT |
17047 | static const char * |
17048 | dwarf2_canonicalize_name (const char *name, struct dwarf2_cu *cu, | |
71c25dea TT |
17049 | struct obstack *obstack) |
17050 | { | |
17051 | if (name && cu->language == language_cplus) | |
17052 | { | |
17053 | char *canon_name = cp_canonicalize_string (name); | |
17054 | ||
17055 | if (canon_name != NULL) | |
17056 | { | |
17057 | if (strcmp (canon_name, name) != 0) | |
10f0c4bb | 17058 | name = obstack_copy0 (obstack, canon_name, strlen (canon_name)); |
71c25dea TT |
17059 | xfree (canon_name); |
17060 | } | |
17061 | } | |
17062 | ||
17063 | return name; | |
c906108c SS |
17064 | } |
17065 | ||
9219021c DC |
17066 | /* Get name of a die, return NULL if not found. */ |
17067 | ||
15d034d0 | 17068 | static const char * |
e142c38c | 17069 | dwarf2_name (struct die_info *die, struct dwarf2_cu *cu) |
9219021c DC |
17070 | { |
17071 | struct attribute *attr; | |
17072 | ||
e142c38c | 17073 | attr = dwarf2_attr (die, DW_AT_name, cu); |
53832f31 TT |
17074 | if ((!attr || !DW_STRING (attr)) |
17075 | && die->tag != DW_TAG_class_type | |
17076 | && die->tag != DW_TAG_interface_type | |
17077 | && die->tag != DW_TAG_structure_type | |
17078 | && die->tag != DW_TAG_union_type) | |
71c25dea TT |
17079 | return NULL; |
17080 | ||
17081 | switch (die->tag) | |
17082 | { | |
17083 | case DW_TAG_compile_unit: | |
95554aad | 17084 | case DW_TAG_partial_unit: |
71c25dea TT |
17085 | /* Compilation units have a DW_AT_name that is a filename, not |
17086 | a source language identifier. */ | |
17087 | case DW_TAG_enumeration_type: | |
17088 | case DW_TAG_enumerator: | |
17089 | /* These tags always have simple identifiers already; no need | |
17090 | to canonicalize them. */ | |
17091 | return DW_STRING (attr); | |
907af001 | 17092 | |
418835cc KS |
17093 | case DW_TAG_subprogram: |
17094 | /* Java constructors will all be named "<init>", so return | |
17095 | the class name when we see this special case. */ | |
17096 | if (cu->language == language_java | |
17097 | && DW_STRING (attr) != NULL | |
17098 | && strcmp (DW_STRING (attr), "<init>") == 0) | |
17099 | { | |
17100 | struct dwarf2_cu *spec_cu = cu; | |
17101 | struct die_info *spec_die; | |
17102 | ||
17103 | /* GCJ will output '<init>' for Java constructor names. | |
17104 | For this special case, return the name of the parent class. */ | |
17105 | ||
17106 | /* GCJ may output suprogram DIEs with AT_specification set. | |
17107 | If so, use the name of the specified DIE. */ | |
17108 | spec_die = die_specification (die, &spec_cu); | |
17109 | if (spec_die != NULL) | |
17110 | return dwarf2_name (spec_die, spec_cu); | |
17111 | ||
17112 | do | |
17113 | { | |
17114 | die = die->parent; | |
17115 | if (die->tag == DW_TAG_class_type) | |
17116 | return dwarf2_name (die, cu); | |
17117 | } | |
95554aad TT |
17118 | while (die->tag != DW_TAG_compile_unit |
17119 | && die->tag != DW_TAG_partial_unit); | |
418835cc | 17120 | } |
907af001 UW |
17121 | break; |
17122 | ||
17123 | case DW_TAG_class_type: | |
17124 | case DW_TAG_interface_type: | |
17125 | case DW_TAG_structure_type: | |
17126 | case DW_TAG_union_type: | |
17127 | /* Some GCC versions emit spurious DW_AT_name attributes for unnamed | |
17128 | structures or unions. These were of the form "._%d" in GCC 4.1, | |
17129 | or simply "<anonymous struct>" or "<anonymous union>" in GCC 4.3 | |
17130 | and GCC 4.4. We work around this problem by ignoring these. */ | |
53832f31 TT |
17131 | if (attr && DW_STRING (attr) |
17132 | && (strncmp (DW_STRING (attr), "._", 2) == 0 | |
17133 | || strncmp (DW_STRING (attr), "<anonymous", 10) == 0)) | |
907af001 | 17134 | return NULL; |
53832f31 TT |
17135 | |
17136 | /* GCC might emit a nameless typedef that has a linkage name. See | |
17137 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
17138 | if (!attr || DW_STRING (attr) == NULL) | |
17139 | { | |
df5c6c50 | 17140 | char *demangled = NULL; |
53832f31 TT |
17141 | |
17142 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
17143 | if (attr == NULL) | |
17144 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
17145 | ||
17146 | if (attr == NULL || DW_STRING (attr) == NULL) | |
17147 | return NULL; | |
17148 | ||
df5c6c50 JK |
17149 | /* Avoid demangling DW_STRING (attr) the second time on a second |
17150 | call for the same DIE. */ | |
17151 | if (!DW_STRING_IS_CANONICAL (attr)) | |
17152 | demangled = cplus_demangle (DW_STRING (attr), DMGL_TYPES); | |
53832f31 TT |
17153 | |
17154 | if (demangled) | |
17155 | { | |
96408a79 SA |
17156 | char *base; |
17157 | ||
53832f31 | 17158 | /* FIXME: we already did this for the partial symbol... */ |
10f0c4bb TT |
17159 | DW_STRING (attr) = obstack_copy0 (&cu->objfile->objfile_obstack, |
17160 | demangled, strlen (demangled)); | |
53832f31 TT |
17161 | DW_STRING_IS_CANONICAL (attr) = 1; |
17162 | xfree (demangled); | |
96408a79 SA |
17163 | |
17164 | /* Strip any leading namespaces/classes, keep only the base name. | |
17165 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
17166 | base = strrchr (DW_STRING (attr), ':'); | |
17167 | if (base && base > DW_STRING (attr) && base[-1] == ':') | |
17168 | return &base[1]; | |
17169 | else | |
17170 | return DW_STRING (attr); | |
53832f31 TT |
17171 | } |
17172 | } | |
907af001 UW |
17173 | break; |
17174 | ||
71c25dea | 17175 | default: |
907af001 UW |
17176 | break; |
17177 | } | |
17178 | ||
17179 | if (!DW_STRING_IS_CANONICAL (attr)) | |
17180 | { | |
17181 | DW_STRING (attr) | |
17182 | = dwarf2_canonicalize_name (DW_STRING (attr), cu, | |
17183 | &cu->objfile->objfile_obstack); | |
17184 | DW_STRING_IS_CANONICAL (attr) = 1; | |
71c25dea | 17185 | } |
907af001 | 17186 | return DW_STRING (attr); |
9219021c DC |
17187 | } |
17188 | ||
17189 | /* Return the die that this die in an extension of, or NULL if there | |
f2f0e013 DJ |
17190 | is none. *EXT_CU is the CU containing DIE on input, and the CU |
17191 | containing the return value on output. */ | |
9219021c DC |
17192 | |
17193 | static struct die_info * | |
f2f0e013 | 17194 | dwarf2_extension (struct die_info *die, struct dwarf2_cu **ext_cu) |
9219021c DC |
17195 | { |
17196 | struct attribute *attr; | |
9219021c | 17197 | |
f2f0e013 | 17198 | attr = dwarf2_attr (die, DW_AT_extension, *ext_cu); |
9219021c DC |
17199 | if (attr == NULL) |
17200 | return NULL; | |
17201 | ||
f2f0e013 | 17202 | return follow_die_ref (die, attr, ext_cu); |
9219021c DC |
17203 | } |
17204 | ||
c906108c SS |
17205 | /* Convert a DIE tag into its string name. */ |
17206 | ||
f39c6ffd | 17207 | static const char * |
aa1ee363 | 17208 | dwarf_tag_name (unsigned tag) |
c906108c | 17209 | { |
f39c6ffd TT |
17210 | const char *name = get_DW_TAG_name (tag); |
17211 | ||
17212 | if (name == NULL) | |
17213 | return "DW_TAG_<unknown>"; | |
17214 | ||
17215 | return name; | |
c906108c SS |
17216 | } |
17217 | ||
17218 | /* Convert a DWARF attribute code into its string name. */ | |
17219 | ||
f39c6ffd | 17220 | static const char * |
aa1ee363 | 17221 | dwarf_attr_name (unsigned attr) |
c906108c | 17222 | { |
f39c6ffd TT |
17223 | const char *name; |
17224 | ||
c764a876 | 17225 | #ifdef MIPS /* collides with DW_AT_HP_block_index */ |
f39c6ffd TT |
17226 | if (attr == DW_AT_MIPS_fde) |
17227 | return "DW_AT_MIPS_fde"; | |
17228 | #else | |
17229 | if (attr == DW_AT_HP_block_index) | |
17230 | return "DW_AT_HP_block_index"; | |
c764a876 | 17231 | #endif |
f39c6ffd TT |
17232 | |
17233 | name = get_DW_AT_name (attr); | |
17234 | ||
17235 | if (name == NULL) | |
17236 | return "DW_AT_<unknown>"; | |
17237 | ||
17238 | return name; | |
c906108c SS |
17239 | } |
17240 | ||
17241 | /* Convert a DWARF value form code into its string name. */ | |
17242 | ||
f39c6ffd | 17243 | static const char * |
aa1ee363 | 17244 | dwarf_form_name (unsigned form) |
c906108c | 17245 | { |
f39c6ffd TT |
17246 | const char *name = get_DW_FORM_name (form); |
17247 | ||
17248 | if (name == NULL) | |
17249 | return "DW_FORM_<unknown>"; | |
17250 | ||
17251 | return name; | |
c906108c SS |
17252 | } |
17253 | ||
17254 | static char * | |
fba45db2 | 17255 | dwarf_bool_name (unsigned mybool) |
c906108c SS |
17256 | { |
17257 | if (mybool) | |
17258 | return "TRUE"; | |
17259 | else | |
17260 | return "FALSE"; | |
17261 | } | |
17262 | ||
17263 | /* Convert a DWARF type code into its string name. */ | |
17264 | ||
f39c6ffd | 17265 | static const char * |
aa1ee363 | 17266 | dwarf_type_encoding_name (unsigned enc) |
c906108c | 17267 | { |
f39c6ffd | 17268 | const char *name = get_DW_ATE_name (enc); |
c906108c | 17269 | |
f39c6ffd TT |
17270 | if (name == NULL) |
17271 | return "DW_ATE_<unknown>"; | |
c906108c | 17272 | |
f39c6ffd | 17273 | return name; |
c906108c | 17274 | } |
c906108c | 17275 | |
f9aca02d | 17276 | static void |
d97bc12b | 17277 | dump_die_shallow (struct ui_file *f, int indent, struct die_info *die) |
c906108c SS |
17278 | { |
17279 | unsigned int i; | |
17280 | ||
d97bc12b DE |
17281 | print_spaces (indent, f); |
17282 | fprintf_unfiltered (f, "Die: %s (abbrev %d, offset 0x%x)\n", | |
b64f50a1 | 17283 | dwarf_tag_name (die->tag), die->abbrev, die->offset.sect_off); |
d97bc12b DE |
17284 | |
17285 | if (die->parent != NULL) | |
17286 | { | |
17287 | print_spaces (indent, f); | |
17288 | fprintf_unfiltered (f, " parent at offset: 0x%x\n", | |
b64f50a1 | 17289 | die->parent->offset.sect_off); |
d97bc12b DE |
17290 | } |
17291 | ||
17292 | print_spaces (indent, f); | |
17293 | fprintf_unfiltered (f, " has children: %s\n", | |
639d11d3 | 17294 | dwarf_bool_name (die->child != NULL)); |
c906108c | 17295 | |
d97bc12b DE |
17296 | print_spaces (indent, f); |
17297 | fprintf_unfiltered (f, " attributes:\n"); | |
17298 | ||
c906108c SS |
17299 | for (i = 0; i < die->num_attrs; ++i) |
17300 | { | |
d97bc12b DE |
17301 | print_spaces (indent, f); |
17302 | fprintf_unfiltered (f, " %s (%s) ", | |
c906108c SS |
17303 | dwarf_attr_name (die->attrs[i].name), |
17304 | dwarf_form_name (die->attrs[i].form)); | |
d97bc12b | 17305 | |
c906108c SS |
17306 | switch (die->attrs[i].form) |
17307 | { | |
c906108c | 17308 | case DW_FORM_addr: |
3019eac3 | 17309 | case DW_FORM_GNU_addr_index: |
d97bc12b | 17310 | fprintf_unfiltered (f, "address: "); |
5af949e3 | 17311 | fputs_filtered (hex_string (DW_ADDR (&die->attrs[i])), f); |
c906108c SS |
17312 | break; |
17313 | case DW_FORM_block2: | |
17314 | case DW_FORM_block4: | |
17315 | case DW_FORM_block: | |
17316 | case DW_FORM_block1: | |
56eb65bd SP |
17317 | fprintf_unfiltered (f, "block: size %s", |
17318 | pulongest (DW_BLOCK (&die->attrs[i])->size)); | |
c906108c | 17319 | break; |
2dc7f7b3 | 17320 | case DW_FORM_exprloc: |
56eb65bd SP |
17321 | fprintf_unfiltered (f, "expression: size %s", |
17322 | pulongest (DW_BLOCK (&die->attrs[i])->size)); | |
2dc7f7b3 | 17323 | break; |
4568ecf9 DE |
17324 | case DW_FORM_ref_addr: |
17325 | fprintf_unfiltered (f, "ref address: "); | |
17326 | fputs_filtered (hex_string (DW_UNSND (&die->attrs[i])), f); | |
17327 | break; | |
36586728 TT |
17328 | case DW_FORM_GNU_ref_alt: |
17329 | fprintf_unfiltered (f, "alt ref address: "); | |
17330 | fputs_filtered (hex_string (DW_UNSND (&die->attrs[i])), f); | |
17331 | break; | |
10b3939b DJ |
17332 | case DW_FORM_ref1: |
17333 | case DW_FORM_ref2: | |
17334 | case DW_FORM_ref4: | |
4568ecf9 DE |
17335 | case DW_FORM_ref8: |
17336 | case DW_FORM_ref_udata: | |
d97bc12b | 17337 | fprintf_unfiltered (f, "constant ref: 0x%lx (adjusted)", |
4568ecf9 | 17338 | (long) (DW_UNSND (&die->attrs[i]))); |
10b3939b | 17339 | break; |
c906108c SS |
17340 | case DW_FORM_data1: |
17341 | case DW_FORM_data2: | |
17342 | case DW_FORM_data4: | |
ce5d95e1 | 17343 | case DW_FORM_data8: |
c906108c SS |
17344 | case DW_FORM_udata: |
17345 | case DW_FORM_sdata: | |
43bbcdc2 PH |
17346 | fprintf_unfiltered (f, "constant: %s", |
17347 | pulongest (DW_UNSND (&die->attrs[i]))); | |
c906108c | 17348 | break; |
2dc7f7b3 TT |
17349 | case DW_FORM_sec_offset: |
17350 | fprintf_unfiltered (f, "section offset: %s", | |
17351 | pulongest (DW_UNSND (&die->attrs[i]))); | |
17352 | break; | |
55f1336d | 17353 | case DW_FORM_ref_sig8: |
348e048f | 17354 | if (DW_SIGNATURED_TYPE (&die->attrs[i]) != NULL) |
e4a48d9d DE |
17355 | { |
17356 | struct signatured_type *sig_type = | |
17357 | DW_SIGNATURED_TYPE (&die->attrs[i]); | |
17358 | ||
17359 | fprintf_unfiltered (f, "signatured type: 0x%s, offset 0x%x", | |
17360 | hex_string (sig_type->signature), | |
17361 | sig_type->per_cu.offset.sect_off); | |
17362 | } | |
348e048f | 17363 | else |
e4a48d9d | 17364 | fprintf_unfiltered (f, "signatured type, unknown"); |
348e048f | 17365 | break; |
c906108c | 17366 | case DW_FORM_string: |
4bdf3d34 | 17367 | case DW_FORM_strp: |
3019eac3 | 17368 | case DW_FORM_GNU_str_index: |
36586728 | 17369 | case DW_FORM_GNU_strp_alt: |
8285870a | 17370 | fprintf_unfiltered (f, "string: \"%s\" (%s canonicalized)", |
c906108c | 17371 | DW_STRING (&die->attrs[i]) |
8285870a JK |
17372 | ? DW_STRING (&die->attrs[i]) : "", |
17373 | DW_STRING_IS_CANONICAL (&die->attrs[i]) ? "is" : "not"); | |
c906108c SS |
17374 | break; |
17375 | case DW_FORM_flag: | |
17376 | if (DW_UNSND (&die->attrs[i])) | |
d97bc12b | 17377 | fprintf_unfiltered (f, "flag: TRUE"); |
c906108c | 17378 | else |
d97bc12b | 17379 | fprintf_unfiltered (f, "flag: FALSE"); |
c906108c | 17380 | break; |
2dc7f7b3 TT |
17381 | case DW_FORM_flag_present: |
17382 | fprintf_unfiltered (f, "flag: TRUE"); | |
17383 | break; | |
a8329558 | 17384 | case DW_FORM_indirect: |
0963b4bd MS |
17385 | /* The reader will have reduced the indirect form to |
17386 | the "base form" so this form should not occur. */ | |
3e43a32a MS |
17387 | fprintf_unfiltered (f, |
17388 | "unexpected attribute form: DW_FORM_indirect"); | |
a8329558 | 17389 | break; |
c906108c | 17390 | default: |
d97bc12b | 17391 | fprintf_unfiltered (f, "unsupported attribute form: %d.", |
c5aa993b | 17392 | die->attrs[i].form); |
d97bc12b | 17393 | break; |
c906108c | 17394 | } |
d97bc12b | 17395 | fprintf_unfiltered (f, "\n"); |
c906108c SS |
17396 | } |
17397 | } | |
17398 | ||
f9aca02d | 17399 | static void |
d97bc12b | 17400 | dump_die_for_error (struct die_info *die) |
c906108c | 17401 | { |
d97bc12b DE |
17402 | dump_die_shallow (gdb_stderr, 0, die); |
17403 | } | |
17404 | ||
17405 | static void | |
17406 | dump_die_1 (struct ui_file *f, int level, int max_level, struct die_info *die) | |
17407 | { | |
17408 | int indent = level * 4; | |
17409 | ||
17410 | gdb_assert (die != NULL); | |
17411 | ||
17412 | if (level >= max_level) | |
17413 | return; | |
17414 | ||
17415 | dump_die_shallow (f, indent, die); | |
17416 | ||
17417 | if (die->child != NULL) | |
c906108c | 17418 | { |
d97bc12b DE |
17419 | print_spaces (indent, f); |
17420 | fprintf_unfiltered (f, " Children:"); | |
17421 | if (level + 1 < max_level) | |
17422 | { | |
17423 | fprintf_unfiltered (f, "\n"); | |
17424 | dump_die_1 (f, level + 1, max_level, die->child); | |
17425 | } | |
17426 | else | |
17427 | { | |
3e43a32a MS |
17428 | fprintf_unfiltered (f, |
17429 | " [not printed, max nesting level reached]\n"); | |
d97bc12b DE |
17430 | } |
17431 | } | |
17432 | ||
17433 | if (die->sibling != NULL && level > 0) | |
17434 | { | |
17435 | dump_die_1 (f, level, max_level, die->sibling); | |
c906108c SS |
17436 | } |
17437 | } | |
17438 | ||
d97bc12b DE |
17439 | /* This is called from the pdie macro in gdbinit.in. |
17440 | It's not static so gcc will keep a copy callable from gdb. */ | |
17441 | ||
17442 | void | |
17443 | dump_die (struct die_info *die, int max_level) | |
17444 | { | |
17445 | dump_die_1 (gdb_stdlog, 0, max_level, die); | |
17446 | } | |
17447 | ||
f9aca02d | 17448 | static void |
51545339 | 17449 | store_in_ref_table (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17450 | { |
51545339 | 17451 | void **slot; |
c906108c | 17452 | |
b64f50a1 JK |
17453 | slot = htab_find_slot_with_hash (cu->die_hash, die, die->offset.sect_off, |
17454 | INSERT); | |
51545339 DJ |
17455 | |
17456 | *slot = die; | |
c906108c SS |
17457 | } |
17458 | ||
b64f50a1 JK |
17459 | /* DW_ADDR is always stored already as sect_offset; despite for the forms |
17460 | besides DW_FORM_ref_addr it is stored as cu_offset in the DWARF file. */ | |
17461 | ||
93311388 DE |
17462 | static int |
17463 | is_ref_attr (struct attribute *attr) | |
c906108c | 17464 | { |
c906108c SS |
17465 | switch (attr->form) |
17466 | { | |
17467 | case DW_FORM_ref_addr: | |
c906108c SS |
17468 | case DW_FORM_ref1: |
17469 | case DW_FORM_ref2: | |
17470 | case DW_FORM_ref4: | |
613e1657 | 17471 | case DW_FORM_ref8: |
c906108c | 17472 | case DW_FORM_ref_udata: |
36586728 | 17473 | case DW_FORM_GNU_ref_alt: |
93311388 | 17474 | return 1; |
c906108c | 17475 | default: |
93311388 | 17476 | return 0; |
c906108c | 17477 | } |
93311388 DE |
17478 | } |
17479 | ||
b64f50a1 JK |
17480 | /* Return DIE offset of ATTR. Return 0 with complaint if ATTR is not of the |
17481 | required kind. */ | |
17482 | ||
17483 | static sect_offset | |
93311388 DE |
17484 | dwarf2_get_ref_die_offset (struct attribute *attr) |
17485 | { | |
4568ecf9 | 17486 | sect_offset retval = { DW_UNSND (attr) }; |
b64f50a1 | 17487 | |
93311388 | 17488 | if (is_ref_attr (attr)) |
b64f50a1 | 17489 | return retval; |
93311388 | 17490 | |
b64f50a1 | 17491 | retval.sect_off = 0; |
93311388 DE |
17492 | complaint (&symfile_complaints, |
17493 | _("unsupported die ref attribute form: '%s'"), | |
17494 | dwarf_form_name (attr->form)); | |
b64f50a1 | 17495 | return retval; |
c906108c SS |
17496 | } |
17497 | ||
43bbcdc2 PH |
17498 | /* Return the constant value held by ATTR. Return DEFAULT_VALUE if |
17499 | * the value held by the attribute is not constant. */ | |
a02abb62 | 17500 | |
43bbcdc2 | 17501 | static LONGEST |
a02abb62 JB |
17502 | dwarf2_get_attr_constant_value (struct attribute *attr, int default_value) |
17503 | { | |
17504 | if (attr->form == DW_FORM_sdata) | |
17505 | return DW_SND (attr); | |
17506 | else if (attr->form == DW_FORM_udata | |
17507 | || attr->form == DW_FORM_data1 | |
17508 | || attr->form == DW_FORM_data2 | |
17509 | || attr->form == DW_FORM_data4 | |
17510 | || attr->form == DW_FORM_data8) | |
17511 | return DW_UNSND (attr); | |
17512 | else | |
17513 | { | |
3e43a32a MS |
17514 | complaint (&symfile_complaints, |
17515 | _("Attribute value is not a constant (%s)"), | |
a02abb62 JB |
17516 | dwarf_form_name (attr->form)); |
17517 | return default_value; | |
17518 | } | |
17519 | } | |
17520 | ||
348e048f DE |
17521 | /* Follow reference or signature attribute ATTR of SRC_DIE. |
17522 | On entry *REF_CU is the CU of SRC_DIE. | |
17523 | On exit *REF_CU is the CU of the result. */ | |
17524 | ||
17525 | static struct die_info * | |
17526 | follow_die_ref_or_sig (struct die_info *src_die, struct attribute *attr, | |
17527 | struct dwarf2_cu **ref_cu) | |
17528 | { | |
17529 | struct die_info *die; | |
17530 | ||
17531 | if (is_ref_attr (attr)) | |
17532 | die = follow_die_ref (src_die, attr, ref_cu); | |
55f1336d | 17533 | else if (attr->form == DW_FORM_ref_sig8) |
348e048f DE |
17534 | die = follow_die_sig (src_die, attr, ref_cu); |
17535 | else | |
17536 | { | |
17537 | dump_die_for_error (src_die); | |
17538 | error (_("Dwarf Error: Expected reference attribute [in module %s]"), | |
17539 | (*ref_cu)->objfile->name); | |
17540 | } | |
17541 | ||
17542 | return die; | |
03dd20cc DJ |
17543 | } |
17544 | ||
5c631832 | 17545 | /* Follow reference OFFSET. |
673bfd45 DE |
17546 | On entry *REF_CU is the CU of the source die referencing OFFSET. |
17547 | On exit *REF_CU is the CU of the result. | |
17548 | Returns NULL if OFFSET is invalid. */ | |
f504f079 | 17549 | |
f9aca02d | 17550 | static struct die_info * |
36586728 TT |
17551 | follow_die_offset (sect_offset offset, int offset_in_dwz, |
17552 | struct dwarf2_cu **ref_cu) | |
c906108c | 17553 | { |
10b3939b | 17554 | struct die_info temp_die; |
f2f0e013 | 17555 | struct dwarf2_cu *target_cu, *cu = *ref_cu; |
10b3939b | 17556 | |
348e048f DE |
17557 | gdb_assert (cu->per_cu != NULL); |
17558 | ||
98bfdba5 PA |
17559 | target_cu = cu; |
17560 | ||
3019eac3 | 17561 | if (cu->per_cu->is_debug_types) |
348e048f DE |
17562 | { |
17563 | /* .debug_types CUs cannot reference anything outside their CU. | |
17564 | If they need to, they have to reference a signatured type via | |
55f1336d | 17565 | DW_FORM_ref_sig8. */ |
348e048f | 17566 | if (! offset_in_cu_p (&cu->header, offset)) |
5c631832 | 17567 | return NULL; |
348e048f | 17568 | } |
36586728 TT |
17569 | else if (offset_in_dwz != cu->per_cu->is_dwz |
17570 | || ! offset_in_cu_p (&cu->header, offset)) | |
10b3939b DJ |
17571 | { |
17572 | struct dwarf2_per_cu_data *per_cu; | |
9a619af0 | 17573 | |
36586728 TT |
17574 | per_cu = dwarf2_find_containing_comp_unit (offset, offset_in_dwz, |
17575 | cu->objfile); | |
03dd20cc DJ |
17576 | |
17577 | /* If necessary, add it to the queue and load its DIEs. */ | |
95554aad TT |
17578 | if (maybe_queue_comp_unit (cu, per_cu, cu->language)) |
17579 | load_full_comp_unit (per_cu, cu->language); | |
03dd20cc | 17580 | |
10b3939b DJ |
17581 | target_cu = per_cu->cu; |
17582 | } | |
98bfdba5 PA |
17583 | else if (cu->dies == NULL) |
17584 | { | |
17585 | /* We're loading full DIEs during partial symbol reading. */ | |
17586 | gdb_assert (dwarf2_per_objfile->reading_partial_symbols); | |
95554aad | 17587 | load_full_comp_unit (cu->per_cu, language_minimal); |
98bfdba5 | 17588 | } |
c906108c | 17589 | |
f2f0e013 | 17590 | *ref_cu = target_cu; |
51545339 | 17591 | temp_die.offset = offset; |
b64f50a1 | 17592 | return htab_find_with_hash (target_cu->die_hash, &temp_die, offset.sect_off); |
5c631832 | 17593 | } |
10b3939b | 17594 | |
5c631832 JK |
17595 | /* Follow reference attribute ATTR of SRC_DIE. |
17596 | On entry *REF_CU is the CU of SRC_DIE. | |
17597 | On exit *REF_CU is the CU of the result. */ | |
17598 | ||
17599 | static struct die_info * | |
17600 | follow_die_ref (struct die_info *src_die, struct attribute *attr, | |
17601 | struct dwarf2_cu **ref_cu) | |
17602 | { | |
b64f50a1 | 17603 | sect_offset offset = dwarf2_get_ref_die_offset (attr); |
5c631832 JK |
17604 | struct dwarf2_cu *cu = *ref_cu; |
17605 | struct die_info *die; | |
17606 | ||
36586728 TT |
17607 | die = follow_die_offset (offset, |
17608 | (attr->form == DW_FORM_GNU_ref_alt | |
17609 | || cu->per_cu->is_dwz), | |
17610 | ref_cu); | |
5c631832 JK |
17611 | if (!die) |
17612 | error (_("Dwarf Error: Cannot find DIE at 0x%x referenced from DIE " | |
17613 | "at 0x%x [in module %s]"), | |
b64f50a1 | 17614 | offset.sect_off, src_die->offset.sect_off, cu->objfile->name); |
348e048f | 17615 | |
5c631832 JK |
17616 | return die; |
17617 | } | |
17618 | ||
d83e736b JK |
17619 | /* Return DWARF block referenced by DW_AT_location of DIE at OFFSET at PER_CU. |
17620 | Returned value is intended for DW_OP_call*. Returned | |
17621 | dwarf2_locexpr_baton->data has lifetime of PER_CU->OBJFILE. */ | |
5c631832 JK |
17622 | |
17623 | struct dwarf2_locexpr_baton | |
8b9737bf TT |
17624 | dwarf2_fetch_die_loc_sect_off (sect_offset offset, |
17625 | struct dwarf2_per_cu_data *per_cu, | |
17626 | CORE_ADDR (*get_frame_pc) (void *baton), | |
17627 | void *baton) | |
5c631832 | 17628 | { |
918dd910 | 17629 | struct dwarf2_cu *cu; |
5c631832 JK |
17630 | struct die_info *die; |
17631 | struct attribute *attr; | |
17632 | struct dwarf2_locexpr_baton retval; | |
17633 | ||
8cf6f0b1 TT |
17634 | dw2_setup (per_cu->objfile); |
17635 | ||
918dd910 JK |
17636 | if (per_cu->cu == NULL) |
17637 | load_cu (per_cu); | |
17638 | cu = per_cu->cu; | |
17639 | ||
36586728 | 17640 | die = follow_die_offset (offset, per_cu->is_dwz, &cu); |
5c631832 JK |
17641 | if (!die) |
17642 | error (_("Dwarf Error: Cannot find DIE at 0x%x referenced in module %s"), | |
b64f50a1 | 17643 | offset.sect_off, per_cu->objfile->name); |
5c631832 JK |
17644 | |
17645 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
17646 | if (!attr) | |
17647 | { | |
e103e986 JK |
17648 | /* DWARF: "If there is no such attribute, then there is no effect.". |
17649 | DATA is ignored if SIZE is 0. */ | |
5c631832 | 17650 | |
e103e986 | 17651 | retval.data = NULL; |
5c631832 JK |
17652 | retval.size = 0; |
17653 | } | |
8cf6f0b1 TT |
17654 | else if (attr_form_is_section_offset (attr)) |
17655 | { | |
17656 | struct dwarf2_loclist_baton loclist_baton; | |
17657 | CORE_ADDR pc = (*get_frame_pc) (baton); | |
17658 | size_t size; | |
17659 | ||
17660 | fill_in_loclist_baton (cu, &loclist_baton, attr); | |
17661 | ||
17662 | retval.data = dwarf2_find_location_expression (&loclist_baton, | |
17663 | &size, pc); | |
17664 | retval.size = size; | |
17665 | } | |
5c631832 JK |
17666 | else |
17667 | { | |
17668 | if (!attr_form_is_block (attr)) | |
17669 | error (_("Dwarf Error: DIE at 0x%x referenced in module %s " | |
17670 | "is neither DW_FORM_block* nor DW_FORM_exprloc"), | |
b64f50a1 | 17671 | offset.sect_off, per_cu->objfile->name); |
5c631832 JK |
17672 | |
17673 | retval.data = DW_BLOCK (attr)->data; | |
17674 | retval.size = DW_BLOCK (attr)->size; | |
17675 | } | |
17676 | retval.per_cu = cu->per_cu; | |
918dd910 | 17677 | |
918dd910 JK |
17678 | age_cached_comp_units (); |
17679 | ||
5c631832 | 17680 | return retval; |
348e048f DE |
17681 | } |
17682 | ||
8b9737bf TT |
17683 | /* Like dwarf2_fetch_die_loc_sect_off, but take a CU |
17684 | offset. */ | |
17685 | ||
17686 | struct dwarf2_locexpr_baton | |
17687 | dwarf2_fetch_die_loc_cu_off (cu_offset offset_in_cu, | |
17688 | struct dwarf2_per_cu_data *per_cu, | |
17689 | CORE_ADDR (*get_frame_pc) (void *baton), | |
17690 | void *baton) | |
17691 | { | |
17692 | sect_offset offset = { per_cu->offset.sect_off + offset_in_cu.cu_off }; | |
17693 | ||
17694 | return dwarf2_fetch_die_loc_sect_off (offset, per_cu, get_frame_pc, baton); | |
17695 | } | |
17696 | ||
8a9b8146 TT |
17697 | /* Return the type of the DIE at DIE_OFFSET in the CU named by |
17698 | PER_CU. */ | |
17699 | ||
17700 | struct type * | |
b64f50a1 | 17701 | dwarf2_get_die_type (cu_offset die_offset, |
8a9b8146 TT |
17702 | struct dwarf2_per_cu_data *per_cu) |
17703 | { | |
b64f50a1 JK |
17704 | sect_offset die_offset_sect; |
17705 | ||
8a9b8146 | 17706 | dw2_setup (per_cu->objfile); |
b64f50a1 JK |
17707 | |
17708 | die_offset_sect.sect_off = per_cu->offset.sect_off + die_offset.cu_off; | |
17709 | return get_die_type_at_offset (die_offset_sect, per_cu); | |
8a9b8146 TT |
17710 | } |
17711 | ||
348e048f DE |
17712 | /* Follow the signature attribute ATTR in SRC_DIE. |
17713 | On entry *REF_CU is the CU of SRC_DIE. | |
17714 | On exit *REF_CU is the CU of the result. */ | |
17715 | ||
17716 | static struct die_info * | |
17717 | follow_die_sig (struct die_info *src_die, struct attribute *attr, | |
17718 | struct dwarf2_cu **ref_cu) | |
17719 | { | |
17720 | struct objfile *objfile = (*ref_cu)->objfile; | |
17721 | struct die_info temp_die; | |
17722 | struct signatured_type *sig_type = DW_SIGNATURED_TYPE (attr); | |
17723 | struct dwarf2_cu *sig_cu; | |
17724 | struct die_info *die; | |
17725 | ||
17726 | /* sig_type will be NULL if the signatured type is missing from | |
17727 | the debug info. */ | |
17728 | if (sig_type == NULL) | |
17729 | error (_("Dwarf Error: Cannot find signatured DIE referenced from DIE " | |
17730 | "at 0x%x [in module %s]"), | |
b64f50a1 | 17731 | src_die->offset.sect_off, objfile->name); |
348e048f DE |
17732 | |
17733 | /* If necessary, add it to the queue and load its DIEs. */ | |
17734 | ||
95554aad | 17735 | if (maybe_queue_comp_unit (*ref_cu, &sig_type->per_cu, language_minimal)) |
a0f42c21 | 17736 | read_signatured_type (sig_type); |
348e048f DE |
17737 | |
17738 | gdb_assert (sig_type->per_cu.cu != NULL); | |
17739 | ||
17740 | sig_cu = sig_type->per_cu.cu; | |
3019eac3 DE |
17741 | gdb_assert (sig_type->type_offset_in_section.sect_off != 0); |
17742 | temp_die.offset = sig_type->type_offset_in_section; | |
b64f50a1 JK |
17743 | die = htab_find_with_hash (sig_cu->die_hash, &temp_die, |
17744 | temp_die.offset.sect_off); | |
348e048f DE |
17745 | if (die) |
17746 | { | |
796a7ff8 DE |
17747 | /* For .gdb_index version 7 keep track of included TUs. |
17748 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. */ | |
17749 | if (dwarf2_per_objfile->index_table != NULL | |
17750 | && dwarf2_per_objfile->index_table->version <= 7) | |
17751 | { | |
17752 | VEC_safe_push (dwarf2_per_cu_ptr, | |
17753 | (*ref_cu)->per_cu->imported_symtabs, | |
17754 | sig_cu->per_cu); | |
17755 | } | |
17756 | ||
348e048f DE |
17757 | *ref_cu = sig_cu; |
17758 | return die; | |
17759 | } | |
17760 | ||
3e43a32a MS |
17761 | error (_("Dwarf Error: Cannot find signatured DIE at 0x%x referenced " |
17762 | "from DIE at 0x%x [in module %s]"), | |
b64f50a1 | 17763 | temp_die.offset.sect_off, src_die->offset.sect_off, objfile->name); |
348e048f DE |
17764 | } |
17765 | ||
17766 | /* Given an offset of a signatured type, return its signatured_type. */ | |
17767 | ||
17768 | static struct signatured_type * | |
8b70b953 TT |
17769 | lookup_signatured_type_at_offset (struct objfile *objfile, |
17770 | struct dwarf2_section_info *section, | |
b64f50a1 | 17771 | sect_offset offset) |
348e048f | 17772 | { |
b64f50a1 | 17773 | gdb_byte *info_ptr = section->buffer + offset.sect_off; |
348e048f DE |
17774 | unsigned int length, initial_length_size; |
17775 | unsigned int sig_offset; | |
52dc124a | 17776 | struct signatured_type find_entry, *sig_type; |
348e048f DE |
17777 | |
17778 | length = read_initial_length (objfile->obfd, info_ptr, &initial_length_size); | |
17779 | sig_offset = (initial_length_size | |
17780 | + 2 /*version*/ | |
17781 | + (initial_length_size == 4 ? 4 : 8) /*debug_abbrev_offset*/ | |
17782 | + 1 /*address_size*/); | |
17783 | find_entry.signature = bfd_get_64 (objfile->obfd, info_ptr + sig_offset); | |
52dc124a | 17784 | sig_type = htab_find (dwarf2_per_objfile->signatured_types, &find_entry); |
348e048f DE |
17785 | |
17786 | /* This is only used to lookup previously recorded types. | |
17787 | If we didn't find it, it's our bug. */ | |
52dc124a DE |
17788 | gdb_assert (sig_type != NULL); |
17789 | gdb_assert (offset.sect_off == sig_type->per_cu.offset.sect_off); | |
348e048f | 17790 | |
52dc124a | 17791 | return sig_type; |
348e048f DE |
17792 | } |
17793 | ||
e5fe5e75 | 17794 | /* Load the DIEs associated with type unit PER_CU into memory. */ |
348e048f DE |
17795 | |
17796 | static void | |
e5fe5e75 | 17797 | load_full_type_unit (struct dwarf2_per_cu_data *per_cu) |
348e048f | 17798 | { |
52dc124a | 17799 | struct signatured_type *sig_type; |
348e048f | 17800 | |
f4dc4d17 DE |
17801 | /* Caller is responsible for ensuring type_unit_groups don't get here. */ |
17802 | gdb_assert (! IS_TYPE_UNIT_GROUP (per_cu)); | |
17803 | ||
6721b2ec DE |
17804 | /* We have the per_cu, but we need the signatured_type. |
17805 | Fortunately this is an easy translation. */ | |
17806 | gdb_assert (per_cu->is_debug_types); | |
17807 | sig_type = (struct signatured_type *) per_cu; | |
348e048f | 17808 | |
6721b2ec | 17809 | gdb_assert (per_cu->cu == NULL); |
348e048f | 17810 | |
52dc124a | 17811 | read_signatured_type (sig_type); |
348e048f | 17812 | |
6721b2ec | 17813 | gdb_assert (per_cu->cu != NULL); |
348e048f DE |
17814 | } |
17815 | ||
dee91e82 DE |
17816 | /* die_reader_func for read_signatured_type. |
17817 | This is identical to load_full_comp_unit_reader, | |
17818 | but is kept separate for now. */ | |
348e048f DE |
17819 | |
17820 | static void | |
dee91e82 DE |
17821 | read_signatured_type_reader (const struct die_reader_specs *reader, |
17822 | gdb_byte *info_ptr, | |
17823 | struct die_info *comp_unit_die, | |
17824 | int has_children, | |
17825 | void *data) | |
348e048f | 17826 | { |
dee91e82 | 17827 | struct dwarf2_cu *cu = reader->cu; |
348e048f | 17828 | |
dee91e82 DE |
17829 | gdb_assert (cu->die_hash == NULL); |
17830 | cu->die_hash = | |
17831 | htab_create_alloc_ex (cu->header.length / 12, | |
17832 | die_hash, | |
17833 | die_eq, | |
17834 | NULL, | |
17835 | &cu->comp_unit_obstack, | |
17836 | hashtab_obstack_allocate, | |
17837 | dummy_obstack_deallocate); | |
348e048f | 17838 | |
dee91e82 DE |
17839 | if (has_children) |
17840 | comp_unit_die->child = read_die_and_siblings (reader, info_ptr, | |
17841 | &info_ptr, comp_unit_die); | |
17842 | cu->dies = comp_unit_die; | |
17843 | /* comp_unit_die is not stored in die_hash, no need. */ | |
348e048f DE |
17844 | |
17845 | /* We try not to read any attributes in this function, because not | |
9cdd5dbd | 17846 | all CUs needed for references have been loaded yet, and symbol |
348e048f | 17847 | table processing isn't initialized. But we have to set the CU language, |
dee91e82 DE |
17848 | or we won't be able to build types correctly. |
17849 | Similarly, if we do not read the producer, we can not apply | |
17850 | producer-specific interpretation. */ | |
95554aad | 17851 | prepare_one_comp_unit (cu, cu->dies, language_minimal); |
dee91e82 | 17852 | } |
348e048f | 17853 | |
3019eac3 DE |
17854 | /* Read in a signatured type and build its CU and DIEs. |
17855 | If the type is a stub for the real type in a DWO file, | |
17856 | read in the real type from the DWO file as well. */ | |
dee91e82 DE |
17857 | |
17858 | static void | |
17859 | read_signatured_type (struct signatured_type *sig_type) | |
17860 | { | |
17861 | struct dwarf2_per_cu_data *per_cu = &sig_type->per_cu; | |
348e048f | 17862 | |
3019eac3 | 17863 | gdb_assert (per_cu->is_debug_types); |
dee91e82 | 17864 | gdb_assert (per_cu->cu == NULL); |
348e048f | 17865 | |
f4dc4d17 DE |
17866 | init_cutu_and_read_dies (per_cu, NULL, 0, 1, |
17867 | read_signatured_type_reader, NULL); | |
c906108c SS |
17868 | } |
17869 | ||
c906108c SS |
17870 | /* Decode simple location descriptions. |
17871 | Given a pointer to a dwarf block that defines a location, compute | |
17872 | the location and return the value. | |
17873 | ||
4cecd739 DJ |
17874 | NOTE drow/2003-11-18: This function is called in two situations |
17875 | now: for the address of static or global variables (partial symbols | |
17876 | only) and for offsets into structures which are expected to be | |
17877 | (more or less) constant. The partial symbol case should go away, | |
17878 | and only the constant case should remain. That will let this | |
17879 | function complain more accurately. A few special modes are allowed | |
17880 | without complaint for global variables (for instance, global | |
17881 | register values and thread-local values). | |
c906108c SS |
17882 | |
17883 | A location description containing no operations indicates that the | |
4cecd739 | 17884 | object is optimized out. The return value is 0 for that case. |
6b992462 DJ |
17885 | FIXME drow/2003-11-16: No callers check for this case any more; soon all |
17886 | callers will only want a very basic result and this can become a | |
21ae7a4d JK |
17887 | complaint. |
17888 | ||
17889 | Note that stack[0] is unused except as a default error return. */ | |
c906108c SS |
17890 | |
17891 | static CORE_ADDR | |
e7c27a73 | 17892 | decode_locdesc (struct dwarf_block *blk, struct dwarf2_cu *cu) |
c906108c | 17893 | { |
e7c27a73 | 17894 | struct objfile *objfile = cu->objfile; |
56eb65bd SP |
17895 | size_t i; |
17896 | size_t size = blk->size; | |
21ae7a4d JK |
17897 | gdb_byte *data = blk->data; |
17898 | CORE_ADDR stack[64]; | |
17899 | int stacki; | |
17900 | unsigned int bytes_read, unsnd; | |
17901 | gdb_byte op; | |
c906108c | 17902 | |
21ae7a4d JK |
17903 | i = 0; |
17904 | stacki = 0; | |
17905 | stack[stacki] = 0; | |
17906 | stack[++stacki] = 0; | |
17907 | ||
17908 | while (i < size) | |
17909 | { | |
17910 | op = data[i++]; | |
17911 | switch (op) | |
17912 | { | |
17913 | case DW_OP_lit0: | |
17914 | case DW_OP_lit1: | |
17915 | case DW_OP_lit2: | |
17916 | case DW_OP_lit3: | |
17917 | case DW_OP_lit4: | |
17918 | case DW_OP_lit5: | |
17919 | case DW_OP_lit6: | |
17920 | case DW_OP_lit7: | |
17921 | case DW_OP_lit8: | |
17922 | case DW_OP_lit9: | |
17923 | case DW_OP_lit10: | |
17924 | case DW_OP_lit11: | |
17925 | case DW_OP_lit12: | |
17926 | case DW_OP_lit13: | |
17927 | case DW_OP_lit14: | |
17928 | case DW_OP_lit15: | |
17929 | case DW_OP_lit16: | |
17930 | case DW_OP_lit17: | |
17931 | case DW_OP_lit18: | |
17932 | case DW_OP_lit19: | |
17933 | case DW_OP_lit20: | |
17934 | case DW_OP_lit21: | |
17935 | case DW_OP_lit22: | |
17936 | case DW_OP_lit23: | |
17937 | case DW_OP_lit24: | |
17938 | case DW_OP_lit25: | |
17939 | case DW_OP_lit26: | |
17940 | case DW_OP_lit27: | |
17941 | case DW_OP_lit28: | |
17942 | case DW_OP_lit29: | |
17943 | case DW_OP_lit30: | |
17944 | case DW_OP_lit31: | |
17945 | stack[++stacki] = op - DW_OP_lit0; | |
17946 | break; | |
f1bea926 | 17947 | |
21ae7a4d JK |
17948 | case DW_OP_reg0: |
17949 | case DW_OP_reg1: | |
17950 | case DW_OP_reg2: | |
17951 | case DW_OP_reg3: | |
17952 | case DW_OP_reg4: | |
17953 | case DW_OP_reg5: | |
17954 | case DW_OP_reg6: | |
17955 | case DW_OP_reg7: | |
17956 | case DW_OP_reg8: | |
17957 | case DW_OP_reg9: | |
17958 | case DW_OP_reg10: | |
17959 | case DW_OP_reg11: | |
17960 | case DW_OP_reg12: | |
17961 | case DW_OP_reg13: | |
17962 | case DW_OP_reg14: | |
17963 | case DW_OP_reg15: | |
17964 | case DW_OP_reg16: | |
17965 | case DW_OP_reg17: | |
17966 | case DW_OP_reg18: | |
17967 | case DW_OP_reg19: | |
17968 | case DW_OP_reg20: | |
17969 | case DW_OP_reg21: | |
17970 | case DW_OP_reg22: | |
17971 | case DW_OP_reg23: | |
17972 | case DW_OP_reg24: | |
17973 | case DW_OP_reg25: | |
17974 | case DW_OP_reg26: | |
17975 | case DW_OP_reg27: | |
17976 | case DW_OP_reg28: | |
17977 | case DW_OP_reg29: | |
17978 | case DW_OP_reg30: | |
17979 | case DW_OP_reg31: | |
17980 | stack[++stacki] = op - DW_OP_reg0; | |
17981 | if (i < size) | |
17982 | dwarf2_complex_location_expr_complaint (); | |
17983 | break; | |
c906108c | 17984 | |
21ae7a4d JK |
17985 | case DW_OP_regx: |
17986 | unsnd = read_unsigned_leb128 (NULL, (data + i), &bytes_read); | |
17987 | i += bytes_read; | |
17988 | stack[++stacki] = unsnd; | |
17989 | if (i < size) | |
17990 | dwarf2_complex_location_expr_complaint (); | |
17991 | break; | |
c906108c | 17992 | |
21ae7a4d JK |
17993 | case DW_OP_addr: |
17994 | stack[++stacki] = read_address (objfile->obfd, &data[i], | |
17995 | cu, &bytes_read); | |
17996 | i += bytes_read; | |
17997 | break; | |
d53d4ac5 | 17998 | |
21ae7a4d JK |
17999 | case DW_OP_const1u: |
18000 | stack[++stacki] = read_1_byte (objfile->obfd, &data[i]); | |
18001 | i += 1; | |
18002 | break; | |
18003 | ||
18004 | case DW_OP_const1s: | |
18005 | stack[++stacki] = read_1_signed_byte (objfile->obfd, &data[i]); | |
18006 | i += 1; | |
18007 | break; | |
18008 | ||
18009 | case DW_OP_const2u: | |
18010 | stack[++stacki] = read_2_bytes (objfile->obfd, &data[i]); | |
18011 | i += 2; | |
18012 | break; | |
18013 | ||
18014 | case DW_OP_const2s: | |
18015 | stack[++stacki] = read_2_signed_bytes (objfile->obfd, &data[i]); | |
18016 | i += 2; | |
18017 | break; | |
d53d4ac5 | 18018 | |
21ae7a4d JK |
18019 | case DW_OP_const4u: |
18020 | stack[++stacki] = read_4_bytes (objfile->obfd, &data[i]); | |
18021 | i += 4; | |
18022 | break; | |
18023 | ||
18024 | case DW_OP_const4s: | |
18025 | stack[++stacki] = read_4_signed_bytes (objfile->obfd, &data[i]); | |
18026 | i += 4; | |
18027 | break; | |
18028 | ||
585861ea JK |
18029 | case DW_OP_const8u: |
18030 | stack[++stacki] = read_8_bytes (objfile->obfd, &data[i]); | |
18031 | i += 8; | |
18032 | break; | |
18033 | ||
21ae7a4d JK |
18034 | case DW_OP_constu: |
18035 | stack[++stacki] = read_unsigned_leb128 (NULL, (data + i), | |
18036 | &bytes_read); | |
18037 | i += bytes_read; | |
18038 | break; | |
18039 | ||
18040 | case DW_OP_consts: | |
18041 | stack[++stacki] = read_signed_leb128 (NULL, (data + i), &bytes_read); | |
18042 | i += bytes_read; | |
18043 | break; | |
18044 | ||
18045 | case DW_OP_dup: | |
18046 | stack[stacki + 1] = stack[stacki]; | |
18047 | stacki++; | |
18048 | break; | |
18049 | ||
18050 | case DW_OP_plus: | |
18051 | stack[stacki - 1] += stack[stacki]; | |
18052 | stacki--; | |
18053 | break; | |
18054 | ||
18055 | case DW_OP_plus_uconst: | |
18056 | stack[stacki] += read_unsigned_leb128 (NULL, (data + i), | |
18057 | &bytes_read); | |
18058 | i += bytes_read; | |
18059 | break; | |
18060 | ||
18061 | case DW_OP_minus: | |
18062 | stack[stacki - 1] -= stack[stacki]; | |
18063 | stacki--; | |
18064 | break; | |
18065 | ||
18066 | case DW_OP_deref: | |
18067 | /* If we're not the last op, then we definitely can't encode | |
18068 | this using GDB's address_class enum. This is valid for partial | |
18069 | global symbols, although the variable's address will be bogus | |
18070 | in the psymtab. */ | |
18071 | if (i < size) | |
18072 | dwarf2_complex_location_expr_complaint (); | |
18073 | break; | |
18074 | ||
18075 | case DW_OP_GNU_push_tls_address: | |
18076 | /* The top of the stack has the offset from the beginning | |
18077 | of the thread control block at which the variable is located. */ | |
18078 | /* Nothing should follow this operator, so the top of stack would | |
18079 | be returned. */ | |
18080 | /* This is valid for partial global symbols, but the variable's | |
585861ea JK |
18081 | address will be bogus in the psymtab. Make it always at least |
18082 | non-zero to not look as a variable garbage collected by linker | |
18083 | which have DW_OP_addr 0. */ | |
21ae7a4d JK |
18084 | if (i < size) |
18085 | dwarf2_complex_location_expr_complaint (); | |
585861ea | 18086 | stack[stacki]++; |
21ae7a4d JK |
18087 | break; |
18088 | ||
18089 | case DW_OP_GNU_uninit: | |
18090 | break; | |
18091 | ||
3019eac3 | 18092 | case DW_OP_GNU_addr_index: |
49f6c839 | 18093 | case DW_OP_GNU_const_index: |
3019eac3 DE |
18094 | stack[++stacki] = read_addr_index_from_leb128 (cu, &data[i], |
18095 | &bytes_read); | |
18096 | i += bytes_read; | |
18097 | break; | |
18098 | ||
21ae7a4d JK |
18099 | default: |
18100 | { | |
f39c6ffd | 18101 | const char *name = get_DW_OP_name (op); |
21ae7a4d JK |
18102 | |
18103 | if (name) | |
18104 | complaint (&symfile_complaints, _("unsupported stack op: '%s'"), | |
18105 | name); | |
18106 | else | |
18107 | complaint (&symfile_complaints, _("unsupported stack op: '%02x'"), | |
18108 | op); | |
18109 | } | |
18110 | ||
18111 | return (stack[stacki]); | |
d53d4ac5 | 18112 | } |
3c6e0cb3 | 18113 | |
21ae7a4d JK |
18114 | /* Enforce maximum stack depth of SIZE-1 to avoid writing |
18115 | outside of the allocated space. Also enforce minimum>0. */ | |
18116 | if (stacki >= ARRAY_SIZE (stack) - 1) | |
18117 | { | |
18118 | complaint (&symfile_complaints, | |
18119 | _("location description stack overflow")); | |
18120 | return 0; | |
18121 | } | |
18122 | ||
18123 | if (stacki <= 0) | |
18124 | { | |
18125 | complaint (&symfile_complaints, | |
18126 | _("location description stack underflow")); | |
18127 | return 0; | |
18128 | } | |
18129 | } | |
18130 | return (stack[stacki]); | |
c906108c SS |
18131 | } |
18132 | ||
18133 | /* memory allocation interface */ | |
18134 | ||
c906108c | 18135 | static struct dwarf_block * |
7b5a2f43 | 18136 | dwarf_alloc_block (struct dwarf2_cu *cu) |
c906108c SS |
18137 | { |
18138 | struct dwarf_block *blk; | |
18139 | ||
18140 | blk = (struct dwarf_block *) | |
7b5a2f43 | 18141 | obstack_alloc (&cu->comp_unit_obstack, sizeof (struct dwarf_block)); |
c906108c SS |
18142 | return (blk); |
18143 | } | |
18144 | ||
c906108c | 18145 | static struct die_info * |
b60c80d6 | 18146 | dwarf_alloc_die (struct dwarf2_cu *cu, int num_attrs) |
c906108c SS |
18147 | { |
18148 | struct die_info *die; | |
b60c80d6 DJ |
18149 | size_t size = sizeof (struct die_info); |
18150 | ||
18151 | if (num_attrs > 1) | |
18152 | size += (num_attrs - 1) * sizeof (struct attribute); | |
c906108c | 18153 | |
b60c80d6 | 18154 | die = (struct die_info *) obstack_alloc (&cu->comp_unit_obstack, size); |
c906108c SS |
18155 | memset (die, 0, sizeof (struct die_info)); |
18156 | return (die); | |
18157 | } | |
2e276125 JB |
18158 | |
18159 | \f | |
18160 | /* Macro support. */ | |
18161 | ||
233d95b5 JK |
18162 | /* Return file name relative to the compilation directory of file number I in |
18163 | *LH's file name table. The result is allocated using xmalloc; the caller is | |
2e276125 | 18164 | responsible for freeing it. */ |
233d95b5 | 18165 | |
2e276125 | 18166 | static char * |
233d95b5 | 18167 | file_file_name (int file, struct line_header *lh) |
2e276125 | 18168 | { |
6a83a1e6 EZ |
18169 | /* Is the file number a valid index into the line header's file name |
18170 | table? Remember that file numbers start with one, not zero. */ | |
18171 | if (1 <= file && file <= lh->num_file_names) | |
18172 | { | |
18173 | struct file_entry *fe = &lh->file_names[file - 1]; | |
6e70227d | 18174 | |
233d95b5 | 18175 | if (IS_ABSOLUTE_PATH (fe->name) || fe->dir_index == 0) |
6a83a1e6 | 18176 | return xstrdup (fe->name); |
233d95b5 JK |
18177 | return concat (lh->include_dirs[fe->dir_index - 1], SLASH_STRING, |
18178 | fe->name, NULL); | |
6a83a1e6 | 18179 | } |
2e276125 JB |
18180 | else |
18181 | { | |
6a83a1e6 EZ |
18182 | /* The compiler produced a bogus file number. We can at least |
18183 | record the macro definitions made in the file, even if we | |
18184 | won't be able to find the file by name. */ | |
18185 | char fake_name[80]; | |
9a619af0 | 18186 | |
8c042590 PM |
18187 | xsnprintf (fake_name, sizeof (fake_name), |
18188 | "<bad macro file number %d>", file); | |
2e276125 | 18189 | |
6e70227d | 18190 | complaint (&symfile_complaints, |
6a83a1e6 EZ |
18191 | _("bad file number in macro information (%d)"), |
18192 | file); | |
2e276125 | 18193 | |
6a83a1e6 | 18194 | return xstrdup (fake_name); |
2e276125 JB |
18195 | } |
18196 | } | |
18197 | ||
233d95b5 JK |
18198 | /* Return the full name of file number I in *LH's file name table. |
18199 | Use COMP_DIR as the name of the current directory of the | |
18200 | compilation. The result is allocated using xmalloc; the caller is | |
18201 | responsible for freeing it. */ | |
18202 | static char * | |
18203 | file_full_name (int file, struct line_header *lh, const char *comp_dir) | |
18204 | { | |
18205 | /* Is the file number a valid index into the line header's file name | |
18206 | table? Remember that file numbers start with one, not zero. */ | |
18207 | if (1 <= file && file <= lh->num_file_names) | |
18208 | { | |
18209 | char *relative = file_file_name (file, lh); | |
18210 | ||
18211 | if (IS_ABSOLUTE_PATH (relative) || comp_dir == NULL) | |
18212 | return relative; | |
18213 | return reconcat (relative, comp_dir, SLASH_STRING, relative, NULL); | |
18214 | } | |
18215 | else | |
18216 | return file_file_name (file, lh); | |
18217 | } | |
18218 | ||
2e276125 JB |
18219 | |
18220 | static struct macro_source_file * | |
18221 | macro_start_file (int file, int line, | |
18222 | struct macro_source_file *current_file, | |
18223 | const char *comp_dir, | |
18224 | struct line_header *lh, struct objfile *objfile) | |
18225 | { | |
233d95b5 JK |
18226 | /* File name relative to the compilation directory of this source file. */ |
18227 | char *file_name = file_file_name (file, lh); | |
2e276125 JB |
18228 | |
18229 | /* We don't create a macro table for this compilation unit | |
18230 | at all until we actually get a filename. */ | |
18231 | if (! pending_macros) | |
6532ff36 | 18232 | pending_macros = new_macro_table (&objfile->per_bfd->storage_obstack, |
233d95b5 JK |
18233 | objfile->per_bfd->macro_cache, |
18234 | comp_dir); | |
2e276125 JB |
18235 | |
18236 | if (! current_file) | |
abc9d0dc TT |
18237 | { |
18238 | /* If we have no current file, then this must be the start_file | |
18239 | directive for the compilation unit's main source file. */ | |
233d95b5 | 18240 | current_file = macro_set_main (pending_macros, file_name); |
abc9d0dc TT |
18241 | macro_define_special (pending_macros); |
18242 | } | |
2e276125 | 18243 | else |
233d95b5 | 18244 | current_file = macro_include (current_file, line, file_name); |
2e276125 | 18245 | |
233d95b5 | 18246 | xfree (file_name); |
6e70227d | 18247 | |
2e276125 JB |
18248 | return current_file; |
18249 | } | |
18250 | ||
18251 | ||
18252 | /* Copy the LEN characters at BUF to a xmalloc'ed block of memory, | |
18253 | followed by a null byte. */ | |
18254 | static char * | |
18255 | copy_string (const char *buf, int len) | |
18256 | { | |
18257 | char *s = xmalloc (len + 1); | |
9a619af0 | 18258 | |
2e276125 JB |
18259 | memcpy (s, buf, len); |
18260 | s[len] = '\0'; | |
2e276125 JB |
18261 | return s; |
18262 | } | |
18263 | ||
18264 | ||
18265 | static const char * | |
18266 | consume_improper_spaces (const char *p, const char *body) | |
18267 | { | |
18268 | if (*p == ' ') | |
18269 | { | |
4d3c2250 | 18270 | complaint (&symfile_complaints, |
3e43a32a MS |
18271 | _("macro definition contains spaces " |
18272 | "in formal argument list:\n`%s'"), | |
4d3c2250 | 18273 | body); |
2e276125 JB |
18274 | |
18275 | while (*p == ' ') | |
18276 | p++; | |
18277 | } | |
18278 | ||
18279 | return p; | |
18280 | } | |
18281 | ||
18282 | ||
18283 | static void | |
18284 | parse_macro_definition (struct macro_source_file *file, int line, | |
18285 | const char *body) | |
18286 | { | |
18287 | const char *p; | |
18288 | ||
18289 | /* The body string takes one of two forms. For object-like macro | |
18290 | definitions, it should be: | |
18291 | ||
18292 | <macro name> " " <definition> | |
18293 | ||
18294 | For function-like macro definitions, it should be: | |
18295 | ||
18296 | <macro name> "() " <definition> | |
18297 | or | |
18298 | <macro name> "(" <arg name> ( "," <arg name> ) * ") " <definition> | |
18299 | ||
18300 | Spaces may appear only where explicitly indicated, and in the | |
18301 | <definition>. | |
18302 | ||
18303 | The Dwarf 2 spec says that an object-like macro's name is always | |
18304 | followed by a space, but versions of GCC around March 2002 omit | |
6e70227d | 18305 | the space when the macro's definition is the empty string. |
2e276125 JB |
18306 | |
18307 | The Dwarf 2 spec says that there should be no spaces between the | |
18308 | formal arguments in a function-like macro's formal argument list, | |
18309 | but versions of GCC around March 2002 include spaces after the | |
18310 | commas. */ | |
18311 | ||
18312 | ||
18313 | /* Find the extent of the macro name. The macro name is terminated | |
18314 | by either a space or null character (for an object-like macro) or | |
18315 | an opening paren (for a function-like macro). */ | |
18316 | for (p = body; *p; p++) | |
18317 | if (*p == ' ' || *p == '(') | |
18318 | break; | |
18319 | ||
18320 | if (*p == ' ' || *p == '\0') | |
18321 | { | |
18322 | /* It's an object-like macro. */ | |
18323 | int name_len = p - body; | |
18324 | char *name = copy_string (body, name_len); | |
18325 | const char *replacement; | |
18326 | ||
18327 | if (*p == ' ') | |
18328 | replacement = body + name_len + 1; | |
18329 | else | |
18330 | { | |
4d3c2250 | 18331 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
18332 | replacement = body + name_len; |
18333 | } | |
6e70227d | 18334 | |
2e276125 JB |
18335 | macro_define_object (file, line, name, replacement); |
18336 | ||
18337 | xfree (name); | |
18338 | } | |
18339 | else if (*p == '(') | |
18340 | { | |
18341 | /* It's a function-like macro. */ | |
18342 | char *name = copy_string (body, p - body); | |
18343 | int argc = 0; | |
18344 | int argv_size = 1; | |
18345 | char **argv = xmalloc (argv_size * sizeof (*argv)); | |
18346 | ||
18347 | p++; | |
18348 | ||
18349 | p = consume_improper_spaces (p, body); | |
18350 | ||
18351 | /* Parse the formal argument list. */ | |
18352 | while (*p && *p != ')') | |
18353 | { | |
18354 | /* Find the extent of the current argument name. */ | |
18355 | const char *arg_start = p; | |
18356 | ||
18357 | while (*p && *p != ',' && *p != ')' && *p != ' ') | |
18358 | p++; | |
18359 | ||
18360 | if (! *p || p == arg_start) | |
4d3c2250 | 18361 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
18362 | else |
18363 | { | |
18364 | /* Make sure argv has room for the new argument. */ | |
18365 | if (argc >= argv_size) | |
18366 | { | |
18367 | argv_size *= 2; | |
18368 | argv = xrealloc (argv, argv_size * sizeof (*argv)); | |
18369 | } | |
18370 | ||
18371 | argv[argc++] = copy_string (arg_start, p - arg_start); | |
18372 | } | |
18373 | ||
18374 | p = consume_improper_spaces (p, body); | |
18375 | ||
18376 | /* Consume the comma, if present. */ | |
18377 | if (*p == ',') | |
18378 | { | |
18379 | p++; | |
18380 | ||
18381 | p = consume_improper_spaces (p, body); | |
18382 | } | |
18383 | } | |
18384 | ||
18385 | if (*p == ')') | |
18386 | { | |
18387 | p++; | |
18388 | ||
18389 | if (*p == ' ') | |
18390 | /* Perfectly formed definition, no complaints. */ | |
18391 | macro_define_function (file, line, name, | |
6e70227d | 18392 | argc, (const char **) argv, |
2e276125 JB |
18393 | p + 1); |
18394 | else if (*p == '\0') | |
18395 | { | |
18396 | /* Complain, but do define it. */ | |
4d3c2250 | 18397 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 | 18398 | macro_define_function (file, line, name, |
6e70227d | 18399 | argc, (const char **) argv, |
2e276125 JB |
18400 | p); |
18401 | } | |
18402 | else | |
18403 | /* Just complain. */ | |
4d3c2250 | 18404 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
18405 | } |
18406 | else | |
18407 | /* Just complain. */ | |
4d3c2250 | 18408 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
18409 | |
18410 | xfree (name); | |
18411 | { | |
18412 | int i; | |
18413 | ||
18414 | for (i = 0; i < argc; i++) | |
18415 | xfree (argv[i]); | |
18416 | } | |
18417 | xfree (argv); | |
18418 | } | |
18419 | else | |
4d3c2250 | 18420 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
18421 | } |
18422 | ||
cf2c3c16 TT |
18423 | /* Skip some bytes from BYTES according to the form given in FORM. |
18424 | Returns the new pointer. */ | |
2e276125 | 18425 | |
cf2c3c16 | 18426 | static gdb_byte * |
f664829e | 18427 | skip_form_bytes (bfd *abfd, gdb_byte *bytes, gdb_byte *buffer_end, |
cf2c3c16 TT |
18428 | enum dwarf_form form, |
18429 | unsigned int offset_size, | |
18430 | struct dwarf2_section_info *section) | |
2e276125 | 18431 | { |
cf2c3c16 | 18432 | unsigned int bytes_read; |
2e276125 | 18433 | |
cf2c3c16 | 18434 | switch (form) |
2e276125 | 18435 | { |
cf2c3c16 TT |
18436 | case DW_FORM_data1: |
18437 | case DW_FORM_flag: | |
18438 | ++bytes; | |
18439 | break; | |
18440 | ||
18441 | case DW_FORM_data2: | |
18442 | bytes += 2; | |
18443 | break; | |
18444 | ||
18445 | case DW_FORM_data4: | |
18446 | bytes += 4; | |
18447 | break; | |
18448 | ||
18449 | case DW_FORM_data8: | |
18450 | bytes += 8; | |
18451 | break; | |
18452 | ||
18453 | case DW_FORM_string: | |
18454 | read_direct_string (abfd, bytes, &bytes_read); | |
18455 | bytes += bytes_read; | |
18456 | break; | |
18457 | ||
18458 | case DW_FORM_sec_offset: | |
18459 | case DW_FORM_strp: | |
36586728 | 18460 | case DW_FORM_GNU_strp_alt: |
cf2c3c16 TT |
18461 | bytes += offset_size; |
18462 | break; | |
18463 | ||
18464 | case DW_FORM_block: | |
18465 | bytes += read_unsigned_leb128 (abfd, bytes, &bytes_read); | |
18466 | bytes += bytes_read; | |
18467 | break; | |
18468 | ||
18469 | case DW_FORM_block1: | |
18470 | bytes += 1 + read_1_byte (abfd, bytes); | |
18471 | break; | |
18472 | case DW_FORM_block2: | |
18473 | bytes += 2 + read_2_bytes (abfd, bytes); | |
18474 | break; | |
18475 | case DW_FORM_block4: | |
18476 | bytes += 4 + read_4_bytes (abfd, bytes); | |
18477 | break; | |
18478 | ||
18479 | case DW_FORM_sdata: | |
18480 | case DW_FORM_udata: | |
3019eac3 DE |
18481 | case DW_FORM_GNU_addr_index: |
18482 | case DW_FORM_GNU_str_index: | |
f664829e DE |
18483 | bytes = (gdb_byte *) gdb_skip_leb128 (bytes, buffer_end); |
18484 | if (bytes == NULL) | |
18485 | { | |
18486 | dwarf2_section_buffer_overflow_complaint (section); | |
18487 | return NULL; | |
18488 | } | |
cf2c3c16 TT |
18489 | break; |
18490 | ||
18491 | default: | |
18492 | { | |
18493 | complain: | |
18494 | complaint (&symfile_complaints, | |
18495 | _("invalid form 0x%x in `%s'"), | |
18496 | form, | |
18497 | section->asection->name); | |
18498 | return NULL; | |
18499 | } | |
2e276125 JB |
18500 | } |
18501 | ||
cf2c3c16 TT |
18502 | return bytes; |
18503 | } | |
757a13d0 | 18504 | |
cf2c3c16 TT |
18505 | /* A helper for dwarf_decode_macros that handles skipping an unknown |
18506 | opcode. Returns an updated pointer to the macro data buffer; or, | |
18507 | on error, issues a complaint and returns NULL. */ | |
757a13d0 | 18508 | |
cf2c3c16 TT |
18509 | static gdb_byte * |
18510 | skip_unknown_opcode (unsigned int opcode, | |
18511 | gdb_byte **opcode_definitions, | |
f664829e | 18512 | gdb_byte *mac_ptr, gdb_byte *mac_end, |
cf2c3c16 TT |
18513 | bfd *abfd, |
18514 | unsigned int offset_size, | |
18515 | struct dwarf2_section_info *section) | |
18516 | { | |
18517 | unsigned int bytes_read, i; | |
18518 | unsigned long arg; | |
18519 | gdb_byte *defn; | |
2e276125 | 18520 | |
cf2c3c16 | 18521 | if (opcode_definitions[opcode] == NULL) |
2e276125 | 18522 | { |
cf2c3c16 TT |
18523 | complaint (&symfile_complaints, |
18524 | _("unrecognized DW_MACFINO opcode 0x%x"), | |
18525 | opcode); | |
18526 | return NULL; | |
18527 | } | |
2e276125 | 18528 | |
cf2c3c16 TT |
18529 | defn = opcode_definitions[opcode]; |
18530 | arg = read_unsigned_leb128 (abfd, defn, &bytes_read); | |
18531 | defn += bytes_read; | |
2e276125 | 18532 | |
cf2c3c16 TT |
18533 | for (i = 0; i < arg; ++i) |
18534 | { | |
f664829e DE |
18535 | mac_ptr = skip_form_bytes (abfd, mac_ptr, mac_end, defn[i], offset_size, |
18536 | section); | |
cf2c3c16 TT |
18537 | if (mac_ptr == NULL) |
18538 | { | |
18539 | /* skip_form_bytes already issued the complaint. */ | |
18540 | return NULL; | |
18541 | } | |
18542 | } | |
757a13d0 | 18543 | |
cf2c3c16 TT |
18544 | return mac_ptr; |
18545 | } | |
757a13d0 | 18546 | |
cf2c3c16 TT |
18547 | /* A helper function which parses the header of a macro section. |
18548 | If the macro section is the extended (for now called "GNU") type, | |
18549 | then this updates *OFFSET_SIZE. Returns a pointer to just after | |
18550 | the header, or issues a complaint and returns NULL on error. */ | |
757a13d0 | 18551 | |
cf2c3c16 TT |
18552 | static gdb_byte * |
18553 | dwarf_parse_macro_header (gdb_byte **opcode_definitions, | |
18554 | bfd *abfd, | |
18555 | gdb_byte *mac_ptr, | |
18556 | unsigned int *offset_size, | |
18557 | int section_is_gnu) | |
18558 | { | |
18559 | memset (opcode_definitions, 0, 256 * sizeof (gdb_byte *)); | |
757a13d0 | 18560 | |
cf2c3c16 TT |
18561 | if (section_is_gnu) |
18562 | { | |
18563 | unsigned int version, flags; | |
757a13d0 | 18564 | |
cf2c3c16 TT |
18565 | version = read_2_bytes (abfd, mac_ptr); |
18566 | if (version != 4) | |
18567 | { | |
18568 | complaint (&symfile_complaints, | |
18569 | _("unrecognized version `%d' in .debug_macro section"), | |
18570 | version); | |
18571 | return NULL; | |
18572 | } | |
18573 | mac_ptr += 2; | |
757a13d0 | 18574 | |
cf2c3c16 TT |
18575 | flags = read_1_byte (abfd, mac_ptr); |
18576 | ++mac_ptr; | |
18577 | *offset_size = (flags & 1) ? 8 : 4; | |
757a13d0 | 18578 | |
cf2c3c16 TT |
18579 | if ((flags & 2) != 0) |
18580 | /* We don't need the line table offset. */ | |
18581 | mac_ptr += *offset_size; | |
757a13d0 | 18582 | |
cf2c3c16 TT |
18583 | /* Vendor opcode descriptions. */ |
18584 | if ((flags & 4) != 0) | |
18585 | { | |
18586 | unsigned int i, count; | |
757a13d0 | 18587 | |
cf2c3c16 TT |
18588 | count = read_1_byte (abfd, mac_ptr); |
18589 | ++mac_ptr; | |
18590 | for (i = 0; i < count; ++i) | |
18591 | { | |
18592 | unsigned int opcode, bytes_read; | |
18593 | unsigned long arg; | |
18594 | ||
18595 | opcode = read_1_byte (abfd, mac_ptr); | |
18596 | ++mac_ptr; | |
18597 | opcode_definitions[opcode] = mac_ptr; | |
18598 | arg = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
18599 | mac_ptr += bytes_read; | |
18600 | mac_ptr += arg; | |
18601 | } | |
757a13d0 | 18602 | } |
cf2c3c16 | 18603 | } |
757a13d0 | 18604 | |
cf2c3c16 TT |
18605 | return mac_ptr; |
18606 | } | |
757a13d0 | 18607 | |
cf2c3c16 | 18608 | /* A helper for dwarf_decode_macros that handles the GNU extensions, |
8fc3fc34 | 18609 | including DW_MACRO_GNU_transparent_include. */ |
cf2c3c16 TT |
18610 | |
18611 | static void | |
18612 | dwarf_decode_macro_bytes (bfd *abfd, gdb_byte *mac_ptr, gdb_byte *mac_end, | |
18613 | struct macro_source_file *current_file, | |
15d034d0 | 18614 | struct line_header *lh, const char *comp_dir, |
cf2c3c16 | 18615 | struct dwarf2_section_info *section, |
36586728 | 18616 | int section_is_gnu, int section_is_dwz, |
cf2c3c16 | 18617 | unsigned int offset_size, |
8fc3fc34 TT |
18618 | struct objfile *objfile, |
18619 | htab_t include_hash) | |
cf2c3c16 TT |
18620 | { |
18621 | enum dwarf_macro_record_type macinfo_type; | |
18622 | int at_commandline; | |
18623 | gdb_byte *opcode_definitions[256]; | |
757a13d0 | 18624 | |
cf2c3c16 TT |
18625 | mac_ptr = dwarf_parse_macro_header (opcode_definitions, abfd, mac_ptr, |
18626 | &offset_size, section_is_gnu); | |
18627 | if (mac_ptr == NULL) | |
18628 | { | |
18629 | /* We already issued a complaint. */ | |
18630 | return; | |
18631 | } | |
757a13d0 JK |
18632 | |
18633 | /* Determines if GDB is still before first DW_MACINFO_start_file. If true | |
18634 | GDB is still reading the definitions from command line. First | |
18635 | DW_MACINFO_start_file will need to be ignored as it was already executed | |
18636 | to create CURRENT_FILE for the main source holding also the command line | |
18637 | definitions. On first met DW_MACINFO_start_file this flag is reset to | |
18638 | normally execute all the remaining DW_MACINFO_start_file macinfos. */ | |
18639 | ||
18640 | at_commandline = 1; | |
18641 | ||
18642 | do | |
18643 | { | |
18644 | /* Do we at least have room for a macinfo type byte? */ | |
18645 | if (mac_ptr >= mac_end) | |
18646 | { | |
f664829e | 18647 | dwarf2_section_buffer_overflow_complaint (section); |
757a13d0 JK |
18648 | break; |
18649 | } | |
18650 | ||
18651 | macinfo_type = read_1_byte (abfd, mac_ptr); | |
18652 | mac_ptr++; | |
18653 | ||
cf2c3c16 TT |
18654 | /* Note that we rely on the fact that the corresponding GNU and |
18655 | DWARF constants are the same. */ | |
757a13d0 JK |
18656 | switch (macinfo_type) |
18657 | { | |
18658 | /* A zero macinfo type indicates the end of the macro | |
18659 | information. */ | |
18660 | case 0: | |
18661 | break; | |
2e276125 | 18662 | |
cf2c3c16 TT |
18663 | case DW_MACRO_GNU_define: |
18664 | case DW_MACRO_GNU_undef: | |
18665 | case DW_MACRO_GNU_define_indirect: | |
18666 | case DW_MACRO_GNU_undef_indirect: | |
36586728 TT |
18667 | case DW_MACRO_GNU_define_indirect_alt: |
18668 | case DW_MACRO_GNU_undef_indirect_alt: | |
2e276125 | 18669 | { |
891d2f0b | 18670 | unsigned int bytes_read; |
2e276125 JB |
18671 | int line; |
18672 | char *body; | |
cf2c3c16 | 18673 | int is_define; |
2e276125 | 18674 | |
cf2c3c16 TT |
18675 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); |
18676 | mac_ptr += bytes_read; | |
18677 | ||
18678 | if (macinfo_type == DW_MACRO_GNU_define | |
18679 | || macinfo_type == DW_MACRO_GNU_undef) | |
18680 | { | |
18681 | body = read_direct_string (abfd, mac_ptr, &bytes_read); | |
18682 | mac_ptr += bytes_read; | |
18683 | } | |
18684 | else | |
18685 | { | |
18686 | LONGEST str_offset; | |
18687 | ||
18688 | str_offset = read_offset_1 (abfd, mac_ptr, offset_size); | |
18689 | mac_ptr += offset_size; | |
2e276125 | 18690 | |
36586728 | 18691 | if (macinfo_type == DW_MACRO_GNU_define_indirect_alt |
f7a35f02 TT |
18692 | || macinfo_type == DW_MACRO_GNU_undef_indirect_alt |
18693 | || section_is_dwz) | |
36586728 TT |
18694 | { |
18695 | struct dwz_file *dwz = dwarf2_get_dwz_file (); | |
18696 | ||
18697 | body = read_indirect_string_from_dwz (dwz, str_offset); | |
18698 | } | |
18699 | else | |
18700 | body = read_indirect_string_at_offset (abfd, str_offset); | |
cf2c3c16 TT |
18701 | } |
18702 | ||
18703 | is_define = (macinfo_type == DW_MACRO_GNU_define | |
36586728 TT |
18704 | || macinfo_type == DW_MACRO_GNU_define_indirect |
18705 | || macinfo_type == DW_MACRO_GNU_define_indirect_alt); | |
2e276125 | 18706 | if (! current_file) |
757a13d0 JK |
18707 | { |
18708 | /* DWARF violation as no main source is present. */ | |
18709 | complaint (&symfile_complaints, | |
18710 | _("debug info with no main source gives macro %s " | |
18711 | "on line %d: %s"), | |
cf2c3c16 TT |
18712 | is_define ? _("definition") : _("undefinition"), |
18713 | line, body); | |
757a13d0 JK |
18714 | break; |
18715 | } | |
3e43a32a MS |
18716 | if ((line == 0 && !at_commandline) |
18717 | || (line != 0 && at_commandline)) | |
4d3c2250 | 18718 | complaint (&symfile_complaints, |
757a13d0 JK |
18719 | _("debug info gives %s macro %s with %s line %d: %s"), |
18720 | at_commandline ? _("command-line") : _("in-file"), | |
cf2c3c16 | 18721 | is_define ? _("definition") : _("undefinition"), |
757a13d0 JK |
18722 | line == 0 ? _("zero") : _("non-zero"), line, body); |
18723 | ||
cf2c3c16 | 18724 | if (is_define) |
757a13d0 | 18725 | parse_macro_definition (current_file, line, body); |
cf2c3c16 TT |
18726 | else |
18727 | { | |
18728 | gdb_assert (macinfo_type == DW_MACRO_GNU_undef | |
36586728 TT |
18729 | || macinfo_type == DW_MACRO_GNU_undef_indirect |
18730 | || macinfo_type == DW_MACRO_GNU_undef_indirect_alt); | |
cf2c3c16 TT |
18731 | macro_undef (current_file, line, body); |
18732 | } | |
2e276125 JB |
18733 | } |
18734 | break; | |
18735 | ||
cf2c3c16 | 18736 | case DW_MACRO_GNU_start_file: |
2e276125 | 18737 | { |
891d2f0b | 18738 | unsigned int bytes_read; |
2e276125 JB |
18739 | int line, file; |
18740 | ||
18741 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
18742 | mac_ptr += bytes_read; | |
18743 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
18744 | mac_ptr += bytes_read; | |
18745 | ||
3e43a32a MS |
18746 | if ((line == 0 && !at_commandline) |
18747 | || (line != 0 && at_commandline)) | |
757a13d0 JK |
18748 | complaint (&symfile_complaints, |
18749 | _("debug info gives source %d included " | |
18750 | "from %s at %s line %d"), | |
18751 | file, at_commandline ? _("command-line") : _("file"), | |
18752 | line == 0 ? _("zero") : _("non-zero"), line); | |
18753 | ||
18754 | if (at_commandline) | |
18755 | { | |
cf2c3c16 TT |
18756 | /* This DW_MACRO_GNU_start_file was executed in the |
18757 | pass one. */ | |
757a13d0 JK |
18758 | at_commandline = 0; |
18759 | } | |
18760 | else | |
18761 | current_file = macro_start_file (file, line, | |
18762 | current_file, comp_dir, | |
cf2c3c16 | 18763 | lh, objfile); |
2e276125 JB |
18764 | } |
18765 | break; | |
18766 | ||
cf2c3c16 | 18767 | case DW_MACRO_GNU_end_file: |
2e276125 | 18768 | if (! current_file) |
4d3c2250 | 18769 | complaint (&symfile_complaints, |
3e43a32a MS |
18770 | _("macro debug info has an unmatched " |
18771 | "`close_file' directive")); | |
2e276125 JB |
18772 | else |
18773 | { | |
18774 | current_file = current_file->included_by; | |
18775 | if (! current_file) | |
18776 | { | |
cf2c3c16 | 18777 | enum dwarf_macro_record_type next_type; |
2e276125 JB |
18778 | |
18779 | /* GCC circa March 2002 doesn't produce the zero | |
18780 | type byte marking the end of the compilation | |
18781 | unit. Complain if it's not there, but exit no | |
18782 | matter what. */ | |
18783 | ||
18784 | /* Do we at least have room for a macinfo type byte? */ | |
18785 | if (mac_ptr >= mac_end) | |
18786 | { | |
f664829e | 18787 | dwarf2_section_buffer_overflow_complaint (section); |
2e276125 JB |
18788 | return; |
18789 | } | |
18790 | ||
18791 | /* We don't increment mac_ptr here, so this is just | |
18792 | a look-ahead. */ | |
18793 | next_type = read_1_byte (abfd, mac_ptr); | |
18794 | if (next_type != 0) | |
4d3c2250 | 18795 | complaint (&symfile_complaints, |
3e43a32a MS |
18796 | _("no terminating 0-type entry for " |
18797 | "macros in `.debug_macinfo' section")); | |
2e276125 JB |
18798 | |
18799 | return; | |
18800 | } | |
18801 | } | |
18802 | break; | |
18803 | ||
cf2c3c16 | 18804 | case DW_MACRO_GNU_transparent_include: |
36586728 | 18805 | case DW_MACRO_GNU_transparent_include_alt: |
cf2c3c16 TT |
18806 | { |
18807 | LONGEST offset; | |
8fc3fc34 | 18808 | void **slot; |
a036ba48 TT |
18809 | bfd *include_bfd = abfd; |
18810 | struct dwarf2_section_info *include_section = section; | |
18811 | struct dwarf2_section_info alt_section; | |
18812 | gdb_byte *include_mac_end = mac_end; | |
18813 | int is_dwz = section_is_dwz; | |
18814 | gdb_byte *new_mac_ptr; | |
cf2c3c16 TT |
18815 | |
18816 | offset = read_offset_1 (abfd, mac_ptr, offset_size); | |
18817 | mac_ptr += offset_size; | |
18818 | ||
a036ba48 TT |
18819 | if (macinfo_type == DW_MACRO_GNU_transparent_include_alt) |
18820 | { | |
18821 | struct dwz_file *dwz = dwarf2_get_dwz_file (); | |
18822 | ||
18823 | dwarf2_read_section (dwarf2_per_objfile->objfile, | |
18824 | &dwz->macro); | |
18825 | ||
18826 | include_bfd = dwz->macro.asection->owner; | |
18827 | include_section = &dwz->macro; | |
18828 | include_mac_end = dwz->macro.buffer + dwz->macro.size; | |
18829 | is_dwz = 1; | |
18830 | } | |
18831 | ||
18832 | new_mac_ptr = include_section->buffer + offset; | |
18833 | slot = htab_find_slot (include_hash, new_mac_ptr, INSERT); | |
18834 | ||
8fc3fc34 TT |
18835 | if (*slot != NULL) |
18836 | { | |
18837 | /* This has actually happened; see | |
18838 | http://sourceware.org/bugzilla/show_bug.cgi?id=13568. */ | |
18839 | complaint (&symfile_complaints, | |
18840 | _("recursive DW_MACRO_GNU_transparent_include in " | |
18841 | ".debug_macro section")); | |
18842 | } | |
18843 | else | |
18844 | { | |
a036ba48 | 18845 | *slot = new_mac_ptr; |
36586728 | 18846 | |
a036ba48 | 18847 | dwarf_decode_macro_bytes (include_bfd, new_mac_ptr, |
36586728 | 18848 | include_mac_end, current_file, |
8fc3fc34 | 18849 | lh, comp_dir, |
36586728 | 18850 | section, section_is_gnu, is_dwz, |
8fc3fc34 TT |
18851 | offset_size, objfile, include_hash); |
18852 | ||
a036ba48 | 18853 | htab_remove_elt (include_hash, new_mac_ptr); |
8fc3fc34 | 18854 | } |
cf2c3c16 TT |
18855 | } |
18856 | break; | |
18857 | ||
2e276125 | 18858 | case DW_MACINFO_vendor_ext: |
cf2c3c16 TT |
18859 | if (!section_is_gnu) |
18860 | { | |
18861 | unsigned int bytes_read; | |
18862 | int constant; | |
2e276125 | 18863 | |
cf2c3c16 TT |
18864 | constant = 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; | |
2e276125 | 18868 | |
cf2c3c16 TT |
18869 | /* We don't recognize any vendor extensions. */ |
18870 | break; | |
18871 | } | |
18872 | /* FALLTHROUGH */ | |
18873 | ||
18874 | default: | |
18875 | mac_ptr = skip_unknown_opcode (macinfo_type, opcode_definitions, | |
f664829e | 18876 | mac_ptr, mac_end, abfd, offset_size, |
cf2c3c16 TT |
18877 | section); |
18878 | if (mac_ptr == NULL) | |
18879 | return; | |
18880 | break; | |
2e276125 | 18881 | } |
757a13d0 | 18882 | } while (macinfo_type != 0); |
2e276125 | 18883 | } |
8e19ed76 | 18884 | |
cf2c3c16 | 18885 | static void |
09262596 | 18886 | dwarf_decode_macros (struct dwarf2_cu *cu, unsigned int offset, |
15d034d0 | 18887 | const char *comp_dir, int section_is_gnu) |
cf2c3c16 | 18888 | { |
bb5ed363 | 18889 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
09262596 DE |
18890 | struct line_header *lh = cu->line_header; |
18891 | bfd *abfd; | |
cf2c3c16 TT |
18892 | gdb_byte *mac_ptr, *mac_end; |
18893 | struct macro_source_file *current_file = 0; | |
18894 | enum dwarf_macro_record_type macinfo_type; | |
18895 | unsigned int offset_size = cu->header.offset_size; | |
18896 | gdb_byte *opcode_definitions[256]; | |
8fc3fc34 TT |
18897 | struct cleanup *cleanup; |
18898 | htab_t include_hash; | |
18899 | void **slot; | |
09262596 DE |
18900 | struct dwarf2_section_info *section; |
18901 | const char *section_name; | |
18902 | ||
18903 | if (cu->dwo_unit != NULL) | |
18904 | { | |
18905 | if (section_is_gnu) | |
18906 | { | |
18907 | section = &cu->dwo_unit->dwo_file->sections.macro; | |
18908 | section_name = ".debug_macro.dwo"; | |
18909 | } | |
18910 | else | |
18911 | { | |
18912 | section = &cu->dwo_unit->dwo_file->sections.macinfo; | |
18913 | section_name = ".debug_macinfo.dwo"; | |
18914 | } | |
18915 | } | |
18916 | else | |
18917 | { | |
18918 | if (section_is_gnu) | |
18919 | { | |
18920 | section = &dwarf2_per_objfile->macro; | |
18921 | section_name = ".debug_macro"; | |
18922 | } | |
18923 | else | |
18924 | { | |
18925 | section = &dwarf2_per_objfile->macinfo; | |
18926 | section_name = ".debug_macinfo"; | |
18927 | } | |
18928 | } | |
cf2c3c16 | 18929 | |
bb5ed363 | 18930 | dwarf2_read_section (objfile, section); |
cf2c3c16 TT |
18931 | if (section->buffer == NULL) |
18932 | { | |
fceca515 | 18933 | complaint (&symfile_complaints, _("missing %s section"), section_name); |
cf2c3c16 TT |
18934 | return; |
18935 | } | |
09262596 | 18936 | abfd = section->asection->owner; |
cf2c3c16 TT |
18937 | |
18938 | /* First pass: Find the name of the base filename. | |
18939 | This filename is needed in order to process all macros whose definition | |
18940 | (or undefinition) comes from the command line. These macros are defined | |
18941 | before the first DW_MACINFO_start_file entry, and yet still need to be | |
18942 | associated to the base file. | |
18943 | ||
18944 | To determine the base file name, we scan the macro definitions until we | |
18945 | reach the first DW_MACINFO_start_file entry. We then initialize | |
18946 | CURRENT_FILE accordingly so that any macro definition found before the | |
18947 | first DW_MACINFO_start_file can still be associated to the base file. */ | |
18948 | ||
18949 | mac_ptr = section->buffer + offset; | |
18950 | mac_end = section->buffer + section->size; | |
18951 | ||
18952 | mac_ptr = dwarf_parse_macro_header (opcode_definitions, abfd, mac_ptr, | |
18953 | &offset_size, section_is_gnu); | |
18954 | if (mac_ptr == NULL) | |
18955 | { | |
18956 | /* We already issued a complaint. */ | |
18957 | return; | |
18958 | } | |
18959 | ||
18960 | do | |
18961 | { | |
18962 | /* Do we at least have room for a macinfo type byte? */ | |
18963 | if (mac_ptr >= mac_end) | |
18964 | { | |
18965 | /* Complaint is printed during the second pass as GDB will probably | |
18966 | stop the first pass earlier upon finding | |
18967 | DW_MACINFO_start_file. */ | |
18968 | break; | |
18969 | } | |
18970 | ||
18971 | macinfo_type = read_1_byte (abfd, mac_ptr); | |
18972 | mac_ptr++; | |
18973 | ||
18974 | /* Note that we rely on the fact that the corresponding GNU and | |
18975 | DWARF constants are the same. */ | |
18976 | switch (macinfo_type) | |
18977 | { | |
18978 | /* A zero macinfo type indicates the end of the macro | |
18979 | information. */ | |
18980 | case 0: | |
18981 | break; | |
18982 | ||
18983 | case DW_MACRO_GNU_define: | |
18984 | case DW_MACRO_GNU_undef: | |
18985 | /* Only skip the data by MAC_PTR. */ | |
18986 | { | |
18987 | unsigned int bytes_read; | |
18988 | ||
18989 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
18990 | mac_ptr += bytes_read; | |
18991 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
18992 | mac_ptr += bytes_read; | |
18993 | } | |
18994 | break; | |
18995 | ||
18996 | case DW_MACRO_GNU_start_file: | |
18997 | { | |
18998 | unsigned int bytes_read; | |
18999 | int line, file; | |
19000 | ||
19001 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
19002 | mac_ptr += bytes_read; | |
19003 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
19004 | mac_ptr += bytes_read; | |
19005 | ||
19006 | current_file = macro_start_file (file, line, current_file, | |
bb5ed363 | 19007 | comp_dir, lh, objfile); |
cf2c3c16 TT |
19008 | } |
19009 | break; | |
19010 | ||
19011 | case DW_MACRO_GNU_end_file: | |
19012 | /* No data to skip by MAC_PTR. */ | |
19013 | break; | |
19014 | ||
19015 | case DW_MACRO_GNU_define_indirect: | |
19016 | case DW_MACRO_GNU_undef_indirect: | |
f7a35f02 TT |
19017 | case DW_MACRO_GNU_define_indirect_alt: |
19018 | case DW_MACRO_GNU_undef_indirect_alt: | |
cf2c3c16 TT |
19019 | { |
19020 | unsigned int bytes_read; | |
19021 | ||
19022 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
19023 | mac_ptr += bytes_read; | |
19024 | mac_ptr += offset_size; | |
19025 | } | |
19026 | break; | |
19027 | ||
19028 | case DW_MACRO_GNU_transparent_include: | |
f7a35f02 | 19029 | case DW_MACRO_GNU_transparent_include_alt: |
cf2c3c16 TT |
19030 | /* Note that, according to the spec, a transparent include |
19031 | chain cannot call DW_MACRO_GNU_start_file. So, we can just | |
19032 | skip this opcode. */ | |
19033 | mac_ptr += offset_size; | |
19034 | break; | |
19035 | ||
19036 | case DW_MACINFO_vendor_ext: | |
19037 | /* Only skip the data by MAC_PTR. */ | |
19038 | if (!section_is_gnu) | |
19039 | { | |
19040 | unsigned int bytes_read; | |
19041 | ||
19042 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
19043 | mac_ptr += bytes_read; | |
19044 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
19045 | mac_ptr += bytes_read; | |
19046 | } | |
19047 | /* FALLTHROUGH */ | |
19048 | ||
19049 | default: | |
19050 | mac_ptr = skip_unknown_opcode (macinfo_type, opcode_definitions, | |
f664829e | 19051 | mac_ptr, mac_end, abfd, offset_size, |
cf2c3c16 TT |
19052 | section); |
19053 | if (mac_ptr == NULL) | |
19054 | return; | |
19055 | break; | |
19056 | } | |
19057 | } while (macinfo_type != 0 && current_file == NULL); | |
19058 | ||
19059 | /* Second pass: Process all entries. | |
19060 | ||
19061 | Use the AT_COMMAND_LINE flag to determine whether we are still processing | |
19062 | command-line macro definitions/undefinitions. This flag is unset when we | |
19063 | reach the first DW_MACINFO_start_file entry. */ | |
19064 | ||
8fc3fc34 TT |
19065 | include_hash = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, |
19066 | NULL, xcalloc, xfree); | |
19067 | cleanup = make_cleanup_htab_delete (include_hash); | |
19068 | mac_ptr = section->buffer + offset; | |
19069 | slot = htab_find_slot (include_hash, mac_ptr, INSERT); | |
19070 | *slot = mac_ptr; | |
19071 | dwarf_decode_macro_bytes (abfd, mac_ptr, mac_end, | |
36586728 TT |
19072 | current_file, lh, comp_dir, section, |
19073 | section_is_gnu, 0, | |
8fc3fc34 TT |
19074 | offset_size, objfile, include_hash); |
19075 | do_cleanups (cleanup); | |
cf2c3c16 TT |
19076 | } |
19077 | ||
8e19ed76 | 19078 | /* Check if the attribute's form is a DW_FORM_block* |
0963b4bd | 19079 | if so return true else false. */ |
380bca97 | 19080 | |
8e19ed76 PS |
19081 | static int |
19082 | attr_form_is_block (struct attribute *attr) | |
19083 | { | |
19084 | return (attr == NULL ? 0 : | |
19085 | attr->form == DW_FORM_block1 | |
19086 | || attr->form == DW_FORM_block2 | |
19087 | || attr->form == DW_FORM_block4 | |
2dc7f7b3 TT |
19088 | || attr->form == DW_FORM_block |
19089 | || attr->form == DW_FORM_exprloc); | |
8e19ed76 | 19090 | } |
4c2df51b | 19091 | |
c6a0999f JB |
19092 | /* Return non-zero if ATTR's value is a section offset --- classes |
19093 | lineptr, loclistptr, macptr or rangelistptr --- or zero, otherwise. | |
19094 | You may use DW_UNSND (attr) to retrieve such offsets. | |
19095 | ||
19096 | Section 7.5.4, "Attribute Encodings", explains that no attribute | |
19097 | may have a value that belongs to more than one of these classes; it | |
19098 | would be ambiguous if we did, because we use the same forms for all | |
19099 | of them. */ | |
380bca97 | 19100 | |
3690dd37 JB |
19101 | static int |
19102 | attr_form_is_section_offset (struct attribute *attr) | |
19103 | { | |
19104 | return (attr->form == DW_FORM_data4 | |
2dc7f7b3 TT |
19105 | || attr->form == DW_FORM_data8 |
19106 | || attr->form == DW_FORM_sec_offset); | |
3690dd37 JB |
19107 | } |
19108 | ||
3690dd37 JB |
19109 | /* Return non-zero if ATTR's value falls in the 'constant' class, or |
19110 | zero otherwise. When this function returns true, you can apply | |
19111 | dwarf2_get_attr_constant_value to it. | |
19112 | ||
19113 | However, note that for some attributes you must check | |
19114 | attr_form_is_section_offset before using this test. DW_FORM_data4 | |
19115 | and DW_FORM_data8 are members of both the constant class, and of | |
19116 | the classes that contain offsets into other debug sections | |
19117 | (lineptr, loclistptr, macptr or rangelistptr). The DWARF spec says | |
19118 | that, if an attribute's can be either a constant or one of the | |
19119 | section offset classes, DW_FORM_data4 and DW_FORM_data8 should be | |
19120 | taken as section offsets, not constants. */ | |
380bca97 | 19121 | |
3690dd37 JB |
19122 | static int |
19123 | attr_form_is_constant (struct attribute *attr) | |
19124 | { | |
19125 | switch (attr->form) | |
19126 | { | |
19127 | case DW_FORM_sdata: | |
19128 | case DW_FORM_udata: | |
19129 | case DW_FORM_data1: | |
19130 | case DW_FORM_data2: | |
19131 | case DW_FORM_data4: | |
19132 | case DW_FORM_data8: | |
19133 | return 1; | |
19134 | default: | |
19135 | return 0; | |
19136 | } | |
19137 | } | |
19138 | ||
3019eac3 DE |
19139 | /* Return the .debug_loc section to use for CU. |
19140 | For DWO files use .debug_loc.dwo. */ | |
19141 | ||
19142 | static struct dwarf2_section_info * | |
19143 | cu_debug_loc_section (struct dwarf2_cu *cu) | |
19144 | { | |
19145 | if (cu->dwo_unit) | |
19146 | return &cu->dwo_unit->dwo_file->sections.loc; | |
19147 | return &dwarf2_per_objfile->loc; | |
19148 | } | |
19149 | ||
8cf6f0b1 TT |
19150 | /* A helper function that fills in a dwarf2_loclist_baton. */ |
19151 | ||
19152 | static void | |
19153 | fill_in_loclist_baton (struct dwarf2_cu *cu, | |
19154 | struct dwarf2_loclist_baton *baton, | |
19155 | struct attribute *attr) | |
19156 | { | |
3019eac3 DE |
19157 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
19158 | ||
19159 | dwarf2_read_section (dwarf2_per_objfile->objfile, section); | |
8cf6f0b1 TT |
19160 | |
19161 | baton->per_cu = cu->per_cu; | |
19162 | gdb_assert (baton->per_cu); | |
19163 | /* We don't know how long the location list is, but make sure we | |
19164 | don't run off the edge of the section. */ | |
3019eac3 DE |
19165 | baton->size = section->size - DW_UNSND (attr); |
19166 | baton->data = section->buffer + DW_UNSND (attr); | |
8cf6f0b1 | 19167 | baton->base_address = cu->base_address; |
f664829e | 19168 | baton->from_dwo = cu->dwo_unit != NULL; |
8cf6f0b1 TT |
19169 | } |
19170 | ||
4c2df51b DJ |
19171 | static void |
19172 | dwarf2_symbol_mark_computed (struct attribute *attr, struct symbol *sym, | |
f1e6e072 | 19173 | struct dwarf2_cu *cu, int is_block) |
4c2df51b | 19174 | { |
bb5ed363 | 19175 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3019eac3 | 19176 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
bb5ed363 | 19177 | |
3690dd37 | 19178 | if (attr_form_is_section_offset (attr) |
3019eac3 | 19179 | /* .debug_loc{,.dwo} may not exist at all, or the offset may be outside |
99bcc461 DJ |
19180 | the section. If so, fall through to the complaint in the |
19181 | other branch. */ | |
3019eac3 | 19182 | && DW_UNSND (attr) < dwarf2_section_size (objfile, section)) |
4c2df51b | 19183 | { |
0d53c4c4 | 19184 | struct dwarf2_loclist_baton *baton; |
4c2df51b | 19185 | |
bb5ed363 | 19186 | baton = obstack_alloc (&objfile->objfile_obstack, |
0d53c4c4 | 19187 | sizeof (struct dwarf2_loclist_baton)); |
4c2df51b | 19188 | |
8cf6f0b1 | 19189 | fill_in_loclist_baton (cu, baton, attr); |
be391dca | 19190 | |
d00adf39 | 19191 | if (cu->base_known == 0) |
0d53c4c4 | 19192 | complaint (&symfile_complaints, |
3e43a32a MS |
19193 | _("Location list used without " |
19194 | "specifying the CU base address.")); | |
4c2df51b | 19195 | |
f1e6e072 TT |
19196 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
19197 | ? dwarf2_loclist_block_index | |
19198 | : dwarf2_loclist_index); | |
0d53c4c4 DJ |
19199 | SYMBOL_LOCATION_BATON (sym) = baton; |
19200 | } | |
19201 | else | |
19202 | { | |
19203 | struct dwarf2_locexpr_baton *baton; | |
19204 | ||
bb5ed363 | 19205 | baton = obstack_alloc (&objfile->objfile_obstack, |
0d53c4c4 | 19206 | sizeof (struct dwarf2_locexpr_baton)); |
ae0d2f24 UW |
19207 | baton->per_cu = cu->per_cu; |
19208 | gdb_assert (baton->per_cu); | |
0d53c4c4 DJ |
19209 | |
19210 | if (attr_form_is_block (attr)) | |
19211 | { | |
19212 | /* Note that we're just copying the block's data pointer | |
19213 | here, not the actual data. We're still pointing into the | |
6502dd73 DJ |
19214 | info_buffer for SYM's objfile; right now we never release |
19215 | that buffer, but when we do clean up properly this may | |
19216 | need to change. */ | |
0d53c4c4 DJ |
19217 | baton->size = DW_BLOCK (attr)->size; |
19218 | baton->data = DW_BLOCK (attr)->data; | |
19219 | } | |
19220 | else | |
19221 | { | |
19222 | dwarf2_invalid_attrib_class_complaint ("location description", | |
19223 | SYMBOL_NATURAL_NAME (sym)); | |
19224 | baton->size = 0; | |
0d53c4c4 | 19225 | } |
6e70227d | 19226 | |
f1e6e072 TT |
19227 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
19228 | ? dwarf2_locexpr_block_index | |
19229 | : dwarf2_locexpr_index); | |
0d53c4c4 DJ |
19230 | SYMBOL_LOCATION_BATON (sym) = baton; |
19231 | } | |
4c2df51b | 19232 | } |
6502dd73 | 19233 | |
9aa1f1e3 TT |
19234 | /* Return the OBJFILE associated with the compilation unit CU. If CU |
19235 | came from a separate debuginfo file, then the master objfile is | |
19236 | returned. */ | |
ae0d2f24 UW |
19237 | |
19238 | struct objfile * | |
19239 | dwarf2_per_cu_objfile (struct dwarf2_per_cu_data *per_cu) | |
19240 | { | |
9291a0cd | 19241 | struct objfile *objfile = per_cu->objfile; |
ae0d2f24 UW |
19242 | |
19243 | /* Return the master objfile, so that we can report and look up the | |
19244 | correct file containing this variable. */ | |
19245 | if (objfile->separate_debug_objfile_backlink) | |
19246 | objfile = objfile->separate_debug_objfile_backlink; | |
19247 | ||
19248 | return objfile; | |
19249 | } | |
19250 | ||
96408a79 SA |
19251 | /* Return comp_unit_head for PER_CU, either already available in PER_CU->CU |
19252 | (CU_HEADERP is unused in such case) or prepare a temporary copy at | |
19253 | CU_HEADERP first. */ | |
19254 | ||
19255 | static const struct comp_unit_head * | |
19256 | per_cu_header_read_in (struct comp_unit_head *cu_headerp, | |
19257 | struct dwarf2_per_cu_data *per_cu) | |
19258 | { | |
96408a79 SA |
19259 | gdb_byte *info_ptr; |
19260 | ||
19261 | if (per_cu->cu) | |
19262 | return &per_cu->cu->header; | |
19263 | ||
8a0459fd | 19264 | info_ptr = per_cu->section->buffer + per_cu->offset.sect_off; |
96408a79 SA |
19265 | |
19266 | memset (cu_headerp, 0, sizeof (*cu_headerp)); | |
0bc3a05c | 19267 | read_comp_unit_head (cu_headerp, info_ptr, per_cu->objfile->obfd); |
96408a79 SA |
19268 | |
19269 | return cu_headerp; | |
19270 | } | |
19271 | ||
ae0d2f24 UW |
19272 | /* Return the address size given in the compilation unit header for CU. */ |
19273 | ||
98714339 | 19274 | int |
ae0d2f24 UW |
19275 | dwarf2_per_cu_addr_size (struct dwarf2_per_cu_data *per_cu) |
19276 | { | |
96408a79 SA |
19277 | struct comp_unit_head cu_header_local; |
19278 | const struct comp_unit_head *cu_headerp; | |
c471e790 | 19279 | |
96408a79 SA |
19280 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); |
19281 | ||
19282 | return cu_headerp->addr_size; | |
ae0d2f24 UW |
19283 | } |
19284 | ||
9eae7c52 TT |
19285 | /* Return the offset size given in the compilation unit header for CU. */ |
19286 | ||
19287 | int | |
19288 | dwarf2_per_cu_offset_size (struct dwarf2_per_cu_data *per_cu) | |
19289 | { | |
96408a79 SA |
19290 | struct comp_unit_head cu_header_local; |
19291 | const struct comp_unit_head *cu_headerp; | |
9c6c53f7 | 19292 | |
96408a79 SA |
19293 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); |
19294 | ||
19295 | return cu_headerp->offset_size; | |
19296 | } | |
19297 | ||
19298 | /* See its dwarf2loc.h declaration. */ | |
19299 | ||
19300 | int | |
19301 | dwarf2_per_cu_ref_addr_size (struct dwarf2_per_cu_data *per_cu) | |
19302 | { | |
19303 | struct comp_unit_head cu_header_local; | |
19304 | const struct comp_unit_head *cu_headerp; | |
19305 | ||
19306 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); | |
19307 | ||
19308 | if (cu_headerp->version == 2) | |
19309 | return cu_headerp->addr_size; | |
19310 | else | |
19311 | return cu_headerp->offset_size; | |
181cebd4 JK |
19312 | } |
19313 | ||
9aa1f1e3 TT |
19314 | /* Return the text offset of the CU. The returned offset comes from |
19315 | this CU's objfile. If this objfile came from a separate debuginfo | |
19316 | file, then the offset may be different from the corresponding | |
19317 | offset in the parent objfile. */ | |
19318 | ||
19319 | CORE_ADDR | |
19320 | dwarf2_per_cu_text_offset (struct dwarf2_per_cu_data *per_cu) | |
19321 | { | |
bb3fa9d0 | 19322 | struct objfile *objfile = per_cu->objfile; |
9aa1f1e3 TT |
19323 | |
19324 | return ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
19325 | } | |
19326 | ||
348e048f DE |
19327 | /* Locate the .debug_info compilation unit from CU's objfile which contains |
19328 | the DIE at OFFSET. Raises an error on failure. */ | |
ae038cb0 DJ |
19329 | |
19330 | static struct dwarf2_per_cu_data * | |
b64f50a1 | 19331 | dwarf2_find_containing_comp_unit (sect_offset offset, |
36586728 | 19332 | unsigned int offset_in_dwz, |
ae038cb0 DJ |
19333 | struct objfile *objfile) |
19334 | { | |
19335 | struct dwarf2_per_cu_data *this_cu; | |
19336 | int low, high; | |
36586728 | 19337 | const sect_offset *cu_off; |
ae038cb0 | 19338 | |
ae038cb0 DJ |
19339 | low = 0; |
19340 | high = dwarf2_per_objfile->n_comp_units - 1; | |
19341 | while (high > low) | |
19342 | { | |
36586728 | 19343 | struct dwarf2_per_cu_data *mid_cu; |
ae038cb0 | 19344 | int mid = low + (high - low) / 2; |
9a619af0 | 19345 | |
36586728 TT |
19346 | mid_cu = dwarf2_per_objfile->all_comp_units[mid]; |
19347 | cu_off = &mid_cu->offset; | |
19348 | if (mid_cu->is_dwz > offset_in_dwz | |
19349 | || (mid_cu->is_dwz == offset_in_dwz | |
19350 | && cu_off->sect_off >= offset.sect_off)) | |
ae038cb0 DJ |
19351 | high = mid; |
19352 | else | |
19353 | low = mid + 1; | |
19354 | } | |
19355 | gdb_assert (low == high); | |
36586728 TT |
19356 | this_cu = dwarf2_per_objfile->all_comp_units[low]; |
19357 | cu_off = &this_cu->offset; | |
19358 | if (this_cu->is_dwz != offset_in_dwz || cu_off->sect_off > offset.sect_off) | |
ae038cb0 | 19359 | { |
36586728 | 19360 | if (low == 0 || this_cu->is_dwz != offset_in_dwz) |
8a3fe4f8 AC |
19361 | error (_("Dwarf Error: could not find partial DIE containing " |
19362 | "offset 0x%lx [in module %s]"), | |
b64f50a1 | 19363 | (long) offset.sect_off, bfd_get_filename (objfile->obfd)); |
10b3939b | 19364 | |
b64f50a1 JK |
19365 | gdb_assert (dwarf2_per_objfile->all_comp_units[low-1]->offset.sect_off |
19366 | <= offset.sect_off); | |
ae038cb0 DJ |
19367 | return dwarf2_per_objfile->all_comp_units[low-1]; |
19368 | } | |
19369 | else | |
19370 | { | |
19371 | this_cu = dwarf2_per_objfile->all_comp_units[low]; | |
19372 | if (low == dwarf2_per_objfile->n_comp_units - 1 | |
b64f50a1 JK |
19373 | && offset.sect_off >= this_cu->offset.sect_off + this_cu->length) |
19374 | error (_("invalid dwarf2 offset %u"), offset.sect_off); | |
19375 | gdb_assert (offset.sect_off < this_cu->offset.sect_off + this_cu->length); | |
ae038cb0 DJ |
19376 | return this_cu; |
19377 | } | |
19378 | } | |
19379 | ||
23745b47 | 19380 | /* Initialize dwarf2_cu CU, owned by PER_CU. */ |
93311388 | 19381 | |
9816fde3 | 19382 | static void |
23745b47 | 19383 | init_one_comp_unit (struct dwarf2_cu *cu, struct dwarf2_per_cu_data *per_cu) |
93311388 | 19384 | { |
9816fde3 | 19385 | memset (cu, 0, sizeof (*cu)); |
23745b47 DE |
19386 | per_cu->cu = cu; |
19387 | cu->per_cu = per_cu; | |
19388 | cu->objfile = per_cu->objfile; | |
93311388 | 19389 | obstack_init (&cu->comp_unit_obstack); |
9816fde3 JK |
19390 | } |
19391 | ||
19392 | /* Initialize basic fields of dwarf_cu CU according to DIE COMP_UNIT_DIE. */ | |
19393 | ||
19394 | static void | |
95554aad TT |
19395 | prepare_one_comp_unit (struct dwarf2_cu *cu, struct die_info *comp_unit_die, |
19396 | enum language pretend_language) | |
9816fde3 JK |
19397 | { |
19398 | struct attribute *attr; | |
19399 | ||
19400 | /* Set the language we're debugging. */ | |
19401 | attr = dwarf2_attr (comp_unit_die, DW_AT_language, cu); | |
19402 | if (attr) | |
19403 | set_cu_language (DW_UNSND (attr), cu); | |
19404 | else | |
9cded63f | 19405 | { |
95554aad | 19406 | cu->language = pretend_language; |
9cded63f TT |
19407 | cu->language_defn = language_def (cu->language); |
19408 | } | |
dee91e82 DE |
19409 | |
19410 | attr = dwarf2_attr (comp_unit_die, DW_AT_producer, cu); | |
19411 | if (attr) | |
19412 | cu->producer = DW_STRING (attr); | |
93311388 DE |
19413 | } |
19414 | ||
ae038cb0 DJ |
19415 | /* Release one cached compilation unit, CU. We unlink it from the tree |
19416 | of compilation units, but we don't remove it from the read_in_chain; | |
93311388 DE |
19417 | the caller is responsible for that. |
19418 | NOTE: DATA is a void * because this function is also used as a | |
19419 | cleanup routine. */ | |
ae038cb0 DJ |
19420 | |
19421 | static void | |
68dc6402 | 19422 | free_heap_comp_unit (void *data) |
ae038cb0 DJ |
19423 | { |
19424 | struct dwarf2_cu *cu = data; | |
19425 | ||
23745b47 DE |
19426 | gdb_assert (cu->per_cu != NULL); |
19427 | cu->per_cu->cu = NULL; | |
ae038cb0 DJ |
19428 | cu->per_cu = NULL; |
19429 | ||
19430 | obstack_free (&cu->comp_unit_obstack, NULL); | |
19431 | ||
19432 | xfree (cu); | |
19433 | } | |
19434 | ||
72bf9492 | 19435 | /* This cleanup function is passed the address of a dwarf2_cu on the stack |
ae038cb0 | 19436 | when we're finished with it. We can't free the pointer itself, but be |
dee91e82 | 19437 | sure to unlink it from the cache. Also release any associated storage. */ |
72bf9492 DJ |
19438 | |
19439 | static void | |
19440 | free_stack_comp_unit (void *data) | |
19441 | { | |
19442 | struct dwarf2_cu *cu = data; | |
19443 | ||
23745b47 DE |
19444 | gdb_assert (cu->per_cu != NULL); |
19445 | cu->per_cu->cu = NULL; | |
19446 | cu->per_cu = NULL; | |
19447 | ||
72bf9492 DJ |
19448 | obstack_free (&cu->comp_unit_obstack, NULL); |
19449 | cu->partial_dies = NULL; | |
ae038cb0 DJ |
19450 | } |
19451 | ||
19452 | /* Free all cached compilation units. */ | |
19453 | ||
19454 | static void | |
19455 | free_cached_comp_units (void *data) | |
19456 | { | |
19457 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
19458 | ||
19459 | per_cu = dwarf2_per_objfile->read_in_chain; | |
19460 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
19461 | while (per_cu != NULL) | |
19462 | { | |
19463 | struct dwarf2_per_cu_data *next_cu; | |
19464 | ||
19465 | next_cu = per_cu->cu->read_in_chain; | |
19466 | ||
68dc6402 | 19467 | free_heap_comp_unit (per_cu->cu); |
ae038cb0 DJ |
19468 | *last_chain = next_cu; |
19469 | ||
19470 | per_cu = next_cu; | |
19471 | } | |
19472 | } | |
19473 | ||
19474 | /* Increase the age counter on each cached compilation unit, and free | |
19475 | any that are too old. */ | |
19476 | ||
19477 | static void | |
19478 | age_cached_comp_units (void) | |
19479 | { | |
19480 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
19481 | ||
19482 | dwarf2_clear_marks (dwarf2_per_objfile->read_in_chain); | |
19483 | per_cu = dwarf2_per_objfile->read_in_chain; | |
19484 | while (per_cu != NULL) | |
19485 | { | |
19486 | per_cu->cu->last_used ++; | |
19487 | if (per_cu->cu->last_used <= dwarf2_max_cache_age) | |
19488 | dwarf2_mark (per_cu->cu); | |
19489 | per_cu = per_cu->cu->read_in_chain; | |
19490 | } | |
19491 | ||
19492 | per_cu = dwarf2_per_objfile->read_in_chain; | |
19493 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
19494 | while (per_cu != NULL) | |
19495 | { | |
19496 | struct dwarf2_per_cu_data *next_cu; | |
19497 | ||
19498 | next_cu = per_cu->cu->read_in_chain; | |
19499 | ||
19500 | if (!per_cu->cu->mark) | |
19501 | { | |
68dc6402 | 19502 | free_heap_comp_unit (per_cu->cu); |
ae038cb0 DJ |
19503 | *last_chain = next_cu; |
19504 | } | |
19505 | else | |
19506 | last_chain = &per_cu->cu->read_in_chain; | |
19507 | ||
19508 | per_cu = next_cu; | |
19509 | } | |
19510 | } | |
19511 | ||
19512 | /* Remove a single compilation unit from the cache. */ | |
19513 | ||
19514 | static void | |
dee91e82 | 19515 | free_one_cached_comp_unit (struct dwarf2_per_cu_data *target_per_cu) |
ae038cb0 DJ |
19516 | { |
19517 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
19518 | ||
19519 | per_cu = dwarf2_per_objfile->read_in_chain; | |
19520 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
19521 | while (per_cu != NULL) | |
19522 | { | |
19523 | struct dwarf2_per_cu_data *next_cu; | |
19524 | ||
19525 | next_cu = per_cu->cu->read_in_chain; | |
19526 | ||
dee91e82 | 19527 | if (per_cu == target_per_cu) |
ae038cb0 | 19528 | { |
68dc6402 | 19529 | free_heap_comp_unit (per_cu->cu); |
dee91e82 | 19530 | per_cu->cu = NULL; |
ae038cb0 DJ |
19531 | *last_chain = next_cu; |
19532 | break; | |
19533 | } | |
19534 | else | |
19535 | last_chain = &per_cu->cu->read_in_chain; | |
19536 | ||
19537 | per_cu = next_cu; | |
19538 | } | |
19539 | } | |
19540 | ||
fe3e1990 DJ |
19541 | /* Release all extra memory associated with OBJFILE. */ |
19542 | ||
19543 | void | |
19544 | dwarf2_free_objfile (struct objfile *objfile) | |
19545 | { | |
19546 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); | |
19547 | ||
19548 | if (dwarf2_per_objfile == NULL) | |
19549 | return; | |
19550 | ||
19551 | /* Cached DIE trees use xmalloc and the comp_unit_obstack. */ | |
19552 | free_cached_comp_units (NULL); | |
19553 | ||
7b9f3c50 DE |
19554 | if (dwarf2_per_objfile->quick_file_names_table) |
19555 | htab_delete (dwarf2_per_objfile->quick_file_names_table); | |
9291a0cd | 19556 | |
fe3e1990 DJ |
19557 | /* Everything else should be on the objfile obstack. */ |
19558 | } | |
19559 | ||
dee91e82 DE |
19560 | /* A set of CU "per_cu" pointer, DIE offset, and GDB type pointer. |
19561 | We store these in a hash table separate from the DIEs, and preserve them | |
19562 | when the DIEs are flushed out of cache. | |
19563 | ||
19564 | The CU "per_cu" pointer is needed because offset alone is not enough to | |
3019eac3 | 19565 | uniquely identify the type. A file may have multiple .debug_types sections, |
c88ee1f0 DE |
19566 | or the type may come from a DWO file. Furthermore, while it's more logical |
19567 | to use per_cu->section+offset, with Fission the section with the data is in | |
19568 | the DWO file but we don't know that section at the point we need it. | |
19569 | We have to use something in dwarf2_per_cu_data (or the pointer to it) | |
19570 | because we can enter the lookup routine, get_die_type_at_offset, from | |
19571 | outside this file, and thus won't necessarily have PER_CU->cu. | |
19572 | Fortunately, PER_CU is stable for the life of the objfile. */ | |
1c379e20 | 19573 | |
dee91e82 | 19574 | struct dwarf2_per_cu_offset_and_type |
1c379e20 | 19575 | { |
dee91e82 | 19576 | const struct dwarf2_per_cu_data *per_cu; |
b64f50a1 | 19577 | sect_offset offset; |
1c379e20 DJ |
19578 | struct type *type; |
19579 | }; | |
19580 | ||
dee91e82 | 19581 | /* Hash function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
19582 | |
19583 | static hashval_t | |
dee91e82 | 19584 | per_cu_offset_and_type_hash (const void *item) |
1c379e20 | 19585 | { |
dee91e82 | 19586 | const struct dwarf2_per_cu_offset_and_type *ofs = item; |
9a619af0 | 19587 | |
dee91e82 | 19588 | return (uintptr_t) ofs->per_cu + ofs->offset.sect_off; |
1c379e20 DJ |
19589 | } |
19590 | ||
dee91e82 | 19591 | /* Equality function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
19592 | |
19593 | static int | |
dee91e82 | 19594 | per_cu_offset_and_type_eq (const void *item_lhs, const void *item_rhs) |
1c379e20 | 19595 | { |
dee91e82 DE |
19596 | const struct dwarf2_per_cu_offset_and_type *ofs_lhs = item_lhs; |
19597 | const struct dwarf2_per_cu_offset_and_type *ofs_rhs = item_rhs; | |
9a619af0 | 19598 | |
dee91e82 DE |
19599 | return (ofs_lhs->per_cu == ofs_rhs->per_cu |
19600 | && ofs_lhs->offset.sect_off == ofs_rhs->offset.sect_off); | |
1c379e20 DJ |
19601 | } |
19602 | ||
19603 | /* Set the type associated with DIE to TYPE. Save it in CU's hash | |
7e314c57 JK |
19604 | table if necessary. For convenience, return TYPE. |
19605 | ||
19606 | The DIEs reading must have careful ordering to: | |
19607 | * Not cause infite loops trying to read in DIEs as a prerequisite for | |
19608 | reading current DIE. | |
19609 | * Not trying to dereference contents of still incompletely read in types | |
19610 | while reading in other DIEs. | |
19611 | * Enable referencing still incompletely read in types just by a pointer to | |
19612 | the type without accessing its fields. | |
19613 | ||
19614 | Therefore caller should follow these rules: | |
19615 | * Try to fetch any prerequisite types we may need to build this DIE type | |
19616 | before building the type and calling set_die_type. | |
e71ec853 | 19617 | * After building type call set_die_type for current DIE as soon as |
7e314c57 JK |
19618 | possible before fetching more types to complete the current type. |
19619 | * Make the type as complete as possible before fetching more types. */ | |
1c379e20 | 19620 | |
f792889a | 19621 | static struct type * |
1c379e20 DJ |
19622 | set_die_type (struct die_info *die, struct type *type, struct dwarf2_cu *cu) |
19623 | { | |
dee91e82 | 19624 | struct dwarf2_per_cu_offset_and_type **slot, ofs; |
673bfd45 | 19625 | struct objfile *objfile = cu->objfile; |
1c379e20 | 19626 | |
b4ba55a1 JB |
19627 | /* For Ada types, make sure that the gnat-specific data is always |
19628 | initialized (if not already set). There are a few types where | |
19629 | we should not be doing so, because the type-specific area is | |
19630 | already used to hold some other piece of info (eg: TYPE_CODE_FLT | |
19631 | where the type-specific area is used to store the floatformat). | |
19632 | But this is not a problem, because the gnat-specific information | |
19633 | is actually not needed for these types. */ | |
19634 | if (need_gnat_info (cu) | |
19635 | && TYPE_CODE (type) != TYPE_CODE_FUNC | |
19636 | && TYPE_CODE (type) != TYPE_CODE_FLT | |
19637 | && !HAVE_GNAT_AUX_INFO (type)) | |
19638 | INIT_GNAT_SPECIFIC (type); | |
19639 | ||
dee91e82 | 19640 | if (dwarf2_per_objfile->die_type_hash == NULL) |
f792889a | 19641 | { |
dee91e82 DE |
19642 | dwarf2_per_objfile->die_type_hash = |
19643 | htab_create_alloc_ex (127, | |
19644 | per_cu_offset_and_type_hash, | |
19645 | per_cu_offset_and_type_eq, | |
19646 | NULL, | |
19647 | &objfile->objfile_obstack, | |
19648 | hashtab_obstack_allocate, | |
19649 | dummy_obstack_deallocate); | |
f792889a | 19650 | } |
1c379e20 | 19651 | |
dee91e82 | 19652 | ofs.per_cu = cu->per_cu; |
1c379e20 DJ |
19653 | ofs.offset = die->offset; |
19654 | ofs.type = type; | |
dee91e82 DE |
19655 | slot = (struct dwarf2_per_cu_offset_and_type **) |
19656 | htab_find_slot (dwarf2_per_objfile->die_type_hash, &ofs, INSERT); | |
7e314c57 JK |
19657 | if (*slot) |
19658 | complaint (&symfile_complaints, | |
19659 | _("A problem internal to GDB: DIE 0x%x has type already set"), | |
b64f50a1 | 19660 | die->offset.sect_off); |
673bfd45 | 19661 | *slot = obstack_alloc (&objfile->objfile_obstack, sizeof (**slot)); |
1c379e20 | 19662 | **slot = ofs; |
f792889a | 19663 | return type; |
1c379e20 DJ |
19664 | } |
19665 | ||
380bca97 | 19666 | /* Look up the type for the die at OFFSET in the appropriate type_hash |
673bfd45 | 19667 | table, or return NULL if the die does not have a saved type. */ |
1c379e20 DJ |
19668 | |
19669 | static struct type * | |
b64f50a1 | 19670 | get_die_type_at_offset (sect_offset offset, |
673bfd45 | 19671 | struct dwarf2_per_cu_data *per_cu) |
1c379e20 | 19672 | { |
dee91e82 | 19673 | struct dwarf2_per_cu_offset_and_type *slot, ofs; |
f792889a | 19674 | |
dee91e82 | 19675 | if (dwarf2_per_objfile->die_type_hash == NULL) |
f792889a | 19676 | return NULL; |
1c379e20 | 19677 | |
dee91e82 | 19678 | ofs.per_cu = per_cu; |
673bfd45 | 19679 | ofs.offset = offset; |
dee91e82 | 19680 | slot = htab_find (dwarf2_per_objfile->die_type_hash, &ofs); |
1c379e20 DJ |
19681 | if (slot) |
19682 | return slot->type; | |
19683 | else | |
19684 | return NULL; | |
19685 | } | |
19686 | ||
673bfd45 DE |
19687 | /* Look up the type for DIE in the appropriate type_hash table, |
19688 | or return NULL if DIE does not have a saved type. */ | |
19689 | ||
19690 | static struct type * | |
19691 | get_die_type (struct die_info *die, struct dwarf2_cu *cu) | |
19692 | { | |
19693 | return get_die_type_at_offset (die->offset, cu->per_cu); | |
19694 | } | |
19695 | ||
10b3939b DJ |
19696 | /* Add a dependence relationship from CU to REF_PER_CU. */ |
19697 | ||
19698 | static void | |
19699 | dwarf2_add_dependence (struct dwarf2_cu *cu, | |
19700 | struct dwarf2_per_cu_data *ref_per_cu) | |
19701 | { | |
19702 | void **slot; | |
19703 | ||
19704 | if (cu->dependencies == NULL) | |
19705 | cu->dependencies | |
19706 | = htab_create_alloc_ex (5, htab_hash_pointer, htab_eq_pointer, | |
19707 | NULL, &cu->comp_unit_obstack, | |
19708 | hashtab_obstack_allocate, | |
19709 | dummy_obstack_deallocate); | |
19710 | ||
19711 | slot = htab_find_slot (cu->dependencies, ref_per_cu, INSERT); | |
19712 | if (*slot == NULL) | |
19713 | *slot = ref_per_cu; | |
19714 | } | |
1c379e20 | 19715 | |
f504f079 DE |
19716 | /* Subroutine of dwarf2_mark to pass to htab_traverse. |
19717 | Set the mark field in every compilation unit in the | |
ae038cb0 DJ |
19718 | cache that we must keep because we are keeping CU. */ |
19719 | ||
10b3939b DJ |
19720 | static int |
19721 | dwarf2_mark_helper (void **slot, void *data) | |
19722 | { | |
19723 | struct dwarf2_per_cu_data *per_cu; | |
19724 | ||
19725 | per_cu = (struct dwarf2_per_cu_data *) *slot; | |
d07ed419 JK |
19726 | |
19727 | /* cu->dependencies references may not yet have been ever read if QUIT aborts | |
19728 | reading of the chain. As such dependencies remain valid it is not much | |
19729 | useful to track and undo them during QUIT cleanups. */ | |
19730 | if (per_cu->cu == NULL) | |
19731 | return 1; | |
19732 | ||
10b3939b DJ |
19733 | if (per_cu->cu->mark) |
19734 | return 1; | |
19735 | per_cu->cu->mark = 1; | |
19736 | ||
19737 | if (per_cu->cu->dependencies != NULL) | |
19738 | htab_traverse (per_cu->cu->dependencies, dwarf2_mark_helper, NULL); | |
19739 | ||
19740 | return 1; | |
19741 | } | |
19742 | ||
f504f079 DE |
19743 | /* Set the mark field in CU and in every other compilation unit in the |
19744 | cache that we must keep because we are keeping CU. */ | |
19745 | ||
ae038cb0 DJ |
19746 | static void |
19747 | dwarf2_mark (struct dwarf2_cu *cu) | |
19748 | { | |
19749 | if (cu->mark) | |
19750 | return; | |
19751 | cu->mark = 1; | |
10b3939b DJ |
19752 | if (cu->dependencies != NULL) |
19753 | htab_traverse (cu->dependencies, dwarf2_mark_helper, NULL); | |
ae038cb0 DJ |
19754 | } |
19755 | ||
19756 | static void | |
19757 | dwarf2_clear_marks (struct dwarf2_per_cu_data *per_cu) | |
19758 | { | |
19759 | while (per_cu) | |
19760 | { | |
19761 | per_cu->cu->mark = 0; | |
19762 | per_cu = per_cu->cu->read_in_chain; | |
19763 | } | |
72bf9492 DJ |
19764 | } |
19765 | ||
72bf9492 DJ |
19766 | /* Trivial hash function for partial_die_info: the hash value of a DIE |
19767 | is its offset in .debug_info for this objfile. */ | |
19768 | ||
19769 | static hashval_t | |
19770 | partial_die_hash (const void *item) | |
19771 | { | |
19772 | const struct partial_die_info *part_die = item; | |
9a619af0 | 19773 | |
b64f50a1 | 19774 | return part_die->offset.sect_off; |
72bf9492 DJ |
19775 | } |
19776 | ||
19777 | /* Trivial comparison function for partial_die_info structures: two DIEs | |
19778 | are equal if they have the same offset. */ | |
19779 | ||
19780 | static int | |
19781 | partial_die_eq (const void *item_lhs, const void *item_rhs) | |
19782 | { | |
19783 | const struct partial_die_info *part_die_lhs = item_lhs; | |
19784 | const struct partial_die_info *part_die_rhs = item_rhs; | |
9a619af0 | 19785 | |
b64f50a1 | 19786 | return part_die_lhs->offset.sect_off == part_die_rhs->offset.sect_off; |
72bf9492 DJ |
19787 | } |
19788 | ||
ae038cb0 DJ |
19789 | static struct cmd_list_element *set_dwarf2_cmdlist; |
19790 | static struct cmd_list_element *show_dwarf2_cmdlist; | |
19791 | ||
19792 | static void | |
19793 | set_dwarf2_cmd (char *args, int from_tty) | |
19794 | { | |
19795 | help_list (set_dwarf2_cmdlist, "maintenance set dwarf2 ", -1, gdb_stdout); | |
19796 | } | |
19797 | ||
19798 | static void | |
19799 | show_dwarf2_cmd (char *args, int from_tty) | |
6e70227d | 19800 | { |
ae038cb0 DJ |
19801 | cmd_show_list (show_dwarf2_cmdlist, from_tty, ""); |
19802 | } | |
19803 | ||
4bf44c1c | 19804 | /* Free data associated with OBJFILE, if necessary. */ |
dce234bc PP |
19805 | |
19806 | static void | |
c1bd65d0 | 19807 | dwarf2_per_objfile_free (struct objfile *objfile, void *d) |
dce234bc PP |
19808 | { |
19809 | struct dwarf2_per_objfile *data = d; | |
8b70b953 | 19810 | int ix; |
8b70b953 | 19811 | |
95554aad TT |
19812 | for (ix = 0; ix < dwarf2_per_objfile->n_comp_units; ++ix) |
19813 | VEC_free (dwarf2_per_cu_ptr, | |
796a7ff8 DE |
19814 | dwarf2_per_objfile->all_comp_units[ix]->imported_symtabs); |
19815 | ||
19816 | for (ix = 0; ix < dwarf2_per_objfile->n_type_units; ++ix) | |
19817 | VEC_free (dwarf2_per_cu_ptr, | |
19818 | dwarf2_per_objfile->all_type_units[ix]->per_cu.imported_symtabs); | |
95554aad | 19819 | |
8b70b953 | 19820 | VEC_free (dwarf2_section_info_def, data->types); |
3019eac3 DE |
19821 | |
19822 | if (data->dwo_files) | |
19823 | free_dwo_files (data->dwo_files, objfile); | |
36586728 TT |
19824 | |
19825 | if (data->dwz_file && data->dwz_file->dwz_bfd) | |
19826 | gdb_bfd_unref (data->dwz_file->dwz_bfd); | |
9291a0cd TT |
19827 | } |
19828 | ||
19829 | \f | |
ae2de4f8 | 19830 | /* The "save gdb-index" command. */ |
9291a0cd TT |
19831 | |
19832 | /* The contents of the hash table we create when building the string | |
19833 | table. */ | |
19834 | struct strtab_entry | |
19835 | { | |
19836 | offset_type offset; | |
19837 | const char *str; | |
19838 | }; | |
19839 | ||
559a7a62 JK |
19840 | /* Hash function for a strtab_entry. |
19841 | ||
19842 | Function is used only during write_hash_table so no index format backward | |
19843 | compatibility is needed. */ | |
b89be57b | 19844 | |
9291a0cd TT |
19845 | static hashval_t |
19846 | hash_strtab_entry (const void *e) | |
19847 | { | |
19848 | const struct strtab_entry *entry = e; | |
559a7a62 | 19849 | return mapped_index_string_hash (INT_MAX, entry->str); |
9291a0cd TT |
19850 | } |
19851 | ||
19852 | /* Equality function for a strtab_entry. */ | |
b89be57b | 19853 | |
9291a0cd TT |
19854 | static int |
19855 | eq_strtab_entry (const void *a, const void *b) | |
19856 | { | |
19857 | const struct strtab_entry *ea = a; | |
19858 | const struct strtab_entry *eb = b; | |
19859 | return !strcmp (ea->str, eb->str); | |
19860 | } | |
19861 | ||
19862 | /* Create a strtab_entry hash table. */ | |
b89be57b | 19863 | |
9291a0cd TT |
19864 | static htab_t |
19865 | create_strtab (void) | |
19866 | { | |
19867 | return htab_create_alloc (100, hash_strtab_entry, eq_strtab_entry, | |
19868 | xfree, xcalloc, xfree); | |
19869 | } | |
19870 | ||
19871 | /* Add a string to the constant pool. Return the string's offset in | |
19872 | host order. */ | |
b89be57b | 19873 | |
9291a0cd TT |
19874 | static offset_type |
19875 | add_string (htab_t table, struct obstack *cpool, const char *str) | |
19876 | { | |
19877 | void **slot; | |
19878 | struct strtab_entry entry; | |
19879 | struct strtab_entry *result; | |
19880 | ||
19881 | entry.str = str; | |
19882 | slot = htab_find_slot (table, &entry, INSERT); | |
19883 | if (*slot) | |
19884 | result = *slot; | |
19885 | else | |
19886 | { | |
19887 | result = XNEW (struct strtab_entry); | |
19888 | result->offset = obstack_object_size (cpool); | |
19889 | result->str = str; | |
19890 | obstack_grow_str0 (cpool, str); | |
19891 | *slot = result; | |
19892 | } | |
19893 | return result->offset; | |
19894 | } | |
19895 | ||
19896 | /* An entry in the symbol table. */ | |
19897 | struct symtab_index_entry | |
19898 | { | |
19899 | /* The name of the symbol. */ | |
19900 | const char *name; | |
19901 | /* The offset of the name in the constant pool. */ | |
19902 | offset_type index_offset; | |
19903 | /* A sorted vector of the indices of all the CUs that hold an object | |
19904 | of this name. */ | |
19905 | VEC (offset_type) *cu_indices; | |
19906 | }; | |
19907 | ||
19908 | /* The symbol table. This is a power-of-2-sized hash table. */ | |
19909 | struct mapped_symtab | |
19910 | { | |
19911 | offset_type n_elements; | |
19912 | offset_type size; | |
19913 | struct symtab_index_entry **data; | |
19914 | }; | |
19915 | ||
19916 | /* Hash function for a symtab_index_entry. */ | |
b89be57b | 19917 | |
9291a0cd TT |
19918 | static hashval_t |
19919 | hash_symtab_entry (const void *e) | |
19920 | { | |
19921 | const struct symtab_index_entry *entry = e; | |
19922 | return iterative_hash (VEC_address (offset_type, entry->cu_indices), | |
19923 | sizeof (offset_type) * VEC_length (offset_type, | |
19924 | entry->cu_indices), | |
19925 | 0); | |
19926 | } | |
19927 | ||
19928 | /* Equality function for a symtab_index_entry. */ | |
b89be57b | 19929 | |
9291a0cd TT |
19930 | static int |
19931 | eq_symtab_entry (const void *a, const void *b) | |
19932 | { | |
19933 | const struct symtab_index_entry *ea = a; | |
19934 | const struct symtab_index_entry *eb = b; | |
19935 | int len = VEC_length (offset_type, ea->cu_indices); | |
19936 | if (len != VEC_length (offset_type, eb->cu_indices)) | |
19937 | return 0; | |
19938 | return !memcmp (VEC_address (offset_type, ea->cu_indices), | |
19939 | VEC_address (offset_type, eb->cu_indices), | |
19940 | sizeof (offset_type) * len); | |
19941 | } | |
19942 | ||
19943 | /* Destroy a symtab_index_entry. */ | |
b89be57b | 19944 | |
9291a0cd TT |
19945 | static void |
19946 | delete_symtab_entry (void *p) | |
19947 | { | |
19948 | struct symtab_index_entry *entry = p; | |
19949 | VEC_free (offset_type, entry->cu_indices); | |
19950 | xfree (entry); | |
19951 | } | |
19952 | ||
19953 | /* Create a hash table holding symtab_index_entry objects. */ | |
b89be57b | 19954 | |
9291a0cd | 19955 | static htab_t |
3876f04e | 19956 | create_symbol_hash_table (void) |
9291a0cd TT |
19957 | { |
19958 | return htab_create_alloc (100, hash_symtab_entry, eq_symtab_entry, | |
19959 | delete_symtab_entry, xcalloc, xfree); | |
19960 | } | |
19961 | ||
19962 | /* Create a new mapped symtab object. */ | |
b89be57b | 19963 | |
9291a0cd TT |
19964 | static struct mapped_symtab * |
19965 | create_mapped_symtab (void) | |
19966 | { | |
19967 | struct mapped_symtab *symtab = XNEW (struct mapped_symtab); | |
19968 | symtab->n_elements = 0; | |
19969 | symtab->size = 1024; | |
19970 | symtab->data = XCNEWVEC (struct symtab_index_entry *, symtab->size); | |
19971 | return symtab; | |
19972 | } | |
19973 | ||
19974 | /* Destroy a mapped_symtab. */ | |
b89be57b | 19975 | |
9291a0cd TT |
19976 | static void |
19977 | cleanup_mapped_symtab (void *p) | |
19978 | { | |
19979 | struct mapped_symtab *symtab = p; | |
19980 | /* The contents of the array are freed when the other hash table is | |
19981 | destroyed. */ | |
19982 | xfree (symtab->data); | |
19983 | xfree (symtab); | |
19984 | } | |
19985 | ||
19986 | /* Find a slot in SYMTAB for the symbol NAME. Returns a pointer to | |
559a7a62 JK |
19987 | the slot. |
19988 | ||
19989 | Function is used only during write_hash_table so no index format backward | |
19990 | compatibility is needed. */ | |
b89be57b | 19991 | |
9291a0cd TT |
19992 | static struct symtab_index_entry ** |
19993 | find_slot (struct mapped_symtab *symtab, const char *name) | |
19994 | { | |
559a7a62 | 19995 | offset_type index, step, hash = mapped_index_string_hash (INT_MAX, name); |
9291a0cd TT |
19996 | |
19997 | index = hash & (symtab->size - 1); | |
19998 | step = ((hash * 17) & (symtab->size - 1)) | 1; | |
19999 | ||
20000 | for (;;) | |
20001 | { | |
20002 | if (!symtab->data[index] || !strcmp (name, symtab->data[index]->name)) | |
20003 | return &symtab->data[index]; | |
20004 | index = (index + step) & (symtab->size - 1); | |
20005 | } | |
20006 | } | |
20007 | ||
20008 | /* Expand SYMTAB's hash table. */ | |
b89be57b | 20009 | |
9291a0cd TT |
20010 | static void |
20011 | hash_expand (struct mapped_symtab *symtab) | |
20012 | { | |
20013 | offset_type old_size = symtab->size; | |
20014 | offset_type i; | |
20015 | struct symtab_index_entry **old_entries = symtab->data; | |
20016 | ||
20017 | symtab->size *= 2; | |
20018 | symtab->data = XCNEWVEC (struct symtab_index_entry *, symtab->size); | |
20019 | ||
20020 | for (i = 0; i < old_size; ++i) | |
20021 | { | |
20022 | if (old_entries[i]) | |
20023 | { | |
20024 | struct symtab_index_entry **slot = find_slot (symtab, | |
20025 | old_entries[i]->name); | |
20026 | *slot = old_entries[i]; | |
20027 | } | |
20028 | } | |
20029 | ||
20030 | xfree (old_entries); | |
20031 | } | |
20032 | ||
156942c7 DE |
20033 | /* Add an entry to SYMTAB. NAME is the name of the symbol. |
20034 | CU_INDEX is the index of the CU in which the symbol appears. | |
20035 | IS_STATIC is one if the symbol is static, otherwise zero (global). */ | |
b89be57b | 20036 | |
9291a0cd TT |
20037 | static void |
20038 | add_index_entry (struct mapped_symtab *symtab, const char *name, | |
156942c7 | 20039 | int is_static, gdb_index_symbol_kind kind, |
9291a0cd TT |
20040 | offset_type cu_index) |
20041 | { | |
20042 | struct symtab_index_entry **slot; | |
156942c7 | 20043 | offset_type cu_index_and_attrs; |
9291a0cd TT |
20044 | |
20045 | ++symtab->n_elements; | |
20046 | if (4 * symtab->n_elements / 3 >= symtab->size) | |
20047 | hash_expand (symtab); | |
20048 | ||
20049 | slot = find_slot (symtab, name); | |
20050 | if (!*slot) | |
20051 | { | |
20052 | *slot = XNEW (struct symtab_index_entry); | |
20053 | (*slot)->name = name; | |
156942c7 | 20054 | /* index_offset is set later. */ |
9291a0cd TT |
20055 | (*slot)->cu_indices = NULL; |
20056 | } | |
156942c7 DE |
20057 | |
20058 | cu_index_and_attrs = 0; | |
20059 | DW2_GDB_INDEX_CU_SET_VALUE (cu_index_and_attrs, cu_index); | |
20060 | DW2_GDB_INDEX_SYMBOL_STATIC_SET_VALUE (cu_index_and_attrs, is_static); | |
20061 | DW2_GDB_INDEX_SYMBOL_KIND_SET_VALUE (cu_index_and_attrs, kind); | |
20062 | ||
20063 | /* We don't want to record an index value twice as we want to avoid the | |
20064 | duplication. | |
20065 | We process all global symbols and then all static symbols | |
20066 | (which would allow us to avoid the duplication by only having to check | |
20067 | the last entry pushed), but a symbol could have multiple kinds in one CU. | |
20068 | To keep things simple we don't worry about the duplication here and | |
20069 | sort and uniqufy the list after we've processed all symbols. */ | |
20070 | VEC_safe_push (offset_type, (*slot)->cu_indices, cu_index_and_attrs); | |
20071 | } | |
20072 | ||
20073 | /* qsort helper routine for uniquify_cu_indices. */ | |
20074 | ||
20075 | static int | |
20076 | offset_type_compare (const void *ap, const void *bp) | |
20077 | { | |
20078 | offset_type a = *(offset_type *) ap; | |
20079 | offset_type b = *(offset_type *) bp; | |
20080 | ||
20081 | return (a > b) - (b > a); | |
20082 | } | |
20083 | ||
20084 | /* Sort and remove duplicates of all symbols' cu_indices lists. */ | |
20085 | ||
20086 | static void | |
20087 | uniquify_cu_indices (struct mapped_symtab *symtab) | |
20088 | { | |
20089 | int i; | |
20090 | ||
20091 | for (i = 0; i < symtab->size; ++i) | |
20092 | { | |
20093 | struct symtab_index_entry *entry = symtab->data[i]; | |
20094 | ||
20095 | if (entry | |
20096 | && entry->cu_indices != NULL) | |
20097 | { | |
20098 | unsigned int next_to_insert, next_to_check; | |
20099 | offset_type last_value; | |
20100 | ||
20101 | qsort (VEC_address (offset_type, entry->cu_indices), | |
20102 | VEC_length (offset_type, entry->cu_indices), | |
20103 | sizeof (offset_type), offset_type_compare); | |
20104 | ||
20105 | last_value = VEC_index (offset_type, entry->cu_indices, 0); | |
20106 | next_to_insert = 1; | |
20107 | for (next_to_check = 1; | |
20108 | next_to_check < VEC_length (offset_type, entry->cu_indices); | |
20109 | ++next_to_check) | |
20110 | { | |
20111 | if (VEC_index (offset_type, entry->cu_indices, next_to_check) | |
20112 | != last_value) | |
20113 | { | |
20114 | last_value = VEC_index (offset_type, entry->cu_indices, | |
20115 | next_to_check); | |
20116 | VEC_replace (offset_type, entry->cu_indices, next_to_insert, | |
20117 | last_value); | |
20118 | ++next_to_insert; | |
20119 | } | |
20120 | } | |
20121 | VEC_truncate (offset_type, entry->cu_indices, next_to_insert); | |
20122 | } | |
20123 | } | |
9291a0cd TT |
20124 | } |
20125 | ||
20126 | /* Add a vector of indices to the constant pool. */ | |
b89be57b | 20127 | |
9291a0cd | 20128 | static offset_type |
3876f04e | 20129 | add_indices_to_cpool (htab_t symbol_hash_table, struct obstack *cpool, |
9291a0cd TT |
20130 | struct symtab_index_entry *entry) |
20131 | { | |
20132 | void **slot; | |
20133 | ||
3876f04e | 20134 | slot = htab_find_slot (symbol_hash_table, entry, INSERT); |
9291a0cd TT |
20135 | if (!*slot) |
20136 | { | |
20137 | offset_type len = VEC_length (offset_type, entry->cu_indices); | |
20138 | offset_type val = MAYBE_SWAP (len); | |
20139 | offset_type iter; | |
20140 | int i; | |
20141 | ||
20142 | *slot = entry; | |
20143 | entry->index_offset = obstack_object_size (cpool); | |
20144 | ||
20145 | obstack_grow (cpool, &val, sizeof (val)); | |
20146 | for (i = 0; | |
20147 | VEC_iterate (offset_type, entry->cu_indices, i, iter); | |
20148 | ++i) | |
20149 | { | |
20150 | val = MAYBE_SWAP (iter); | |
20151 | obstack_grow (cpool, &val, sizeof (val)); | |
20152 | } | |
20153 | } | |
20154 | else | |
20155 | { | |
20156 | struct symtab_index_entry *old_entry = *slot; | |
20157 | entry->index_offset = old_entry->index_offset; | |
20158 | entry = old_entry; | |
20159 | } | |
20160 | return entry->index_offset; | |
20161 | } | |
20162 | ||
20163 | /* Write the mapped hash table SYMTAB to the obstack OUTPUT, with | |
20164 | constant pool entries going into the obstack CPOOL. */ | |
b89be57b | 20165 | |
9291a0cd TT |
20166 | static void |
20167 | write_hash_table (struct mapped_symtab *symtab, | |
20168 | struct obstack *output, struct obstack *cpool) | |
20169 | { | |
20170 | offset_type i; | |
3876f04e | 20171 | htab_t symbol_hash_table; |
9291a0cd TT |
20172 | htab_t str_table; |
20173 | ||
3876f04e | 20174 | symbol_hash_table = create_symbol_hash_table (); |
9291a0cd | 20175 | str_table = create_strtab (); |
3876f04e | 20176 | |
9291a0cd TT |
20177 | /* We add all the index vectors to the constant pool first, to |
20178 | ensure alignment is ok. */ | |
20179 | for (i = 0; i < symtab->size; ++i) | |
20180 | { | |
20181 | if (symtab->data[i]) | |
3876f04e | 20182 | add_indices_to_cpool (symbol_hash_table, cpool, symtab->data[i]); |
9291a0cd TT |
20183 | } |
20184 | ||
20185 | /* Now write out the hash table. */ | |
20186 | for (i = 0; i < symtab->size; ++i) | |
20187 | { | |
20188 | offset_type str_off, vec_off; | |
20189 | ||
20190 | if (symtab->data[i]) | |
20191 | { | |
20192 | str_off = add_string (str_table, cpool, symtab->data[i]->name); | |
20193 | vec_off = symtab->data[i]->index_offset; | |
20194 | } | |
20195 | else | |
20196 | { | |
20197 | /* While 0 is a valid constant pool index, it is not valid | |
20198 | to have 0 for both offsets. */ | |
20199 | str_off = 0; | |
20200 | vec_off = 0; | |
20201 | } | |
20202 | ||
20203 | str_off = MAYBE_SWAP (str_off); | |
20204 | vec_off = MAYBE_SWAP (vec_off); | |
20205 | ||
20206 | obstack_grow (output, &str_off, sizeof (str_off)); | |
20207 | obstack_grow (output, &vec_off, sizeof (vec_off)); | |
20208 | } | |
20209 | ||
20210 | htab_delete (str_table); | |
3876f04e | 20211 | htab_delete (symbol_hash_table); |
9291a0cd TT |
20212 | } |
20213 | ||
0a5429f6 DE |
20214 | /* Struct to map psymtab to CU index in the index file. */ |
20215 | struct psymtab_cu_index_map | |
20216 | { | |
20217 | struct partial_symtab *psymtab; | |
20218 | unsigned int cu_index; | |
20219 | }; | |
20220 | ||
20221 | static hashval_t | |
20222 | hash_psymtab_cu_index (const void *item) | |
20223 | { | |
20224 | const struct psymtab_cu_index_map *map = item; | |
20225 | ||
20226 | return htab_hash_pointer (map->psymtab); | |
20227 | } | |
20228 | ||
20229 | static int | |
20230 | eq_psymtab_cu_index (const void *item_lhs, const void *item_rhs) | |
20231 | { | |
20232 | const struct psymtab_cu_index_map *lhs = item_lhs; | |
20233 | const struct psymtab_cu_index_map *rhs = item_rhs; | |
20234 | ||
20235 | return lhs->psymtab == rhs->psymtab; | |
20236 | } | |
20237 | ||
20238 | /* Helper struct for building the address table. */ | |
20239 | struct addrmap_index_data | |
20240 | { | |
20241 | struct objfile *objfile; | |
20242 | struct obstack *addr_obstack; | |
20243 | htab_t cu_index_htab; | |
20244 | ||
20245 | /* Non-zero if the previous_* fields are valid. | |
20246 | We can't write an entry until we see the next entry (since it is only then | |
20247 | that we know the end of the entry). */ | |
20248 | int previous_valid; | |
20249 | /* Index of the CU in the table of all CUs in the index file. */ | |
20250 | unsigned int previous_cu_index; | |
0963b4bd | 20251 | /* Start address of the CU. */ |
0a5429f6 DE |
20252 | CORE_ADDR previous_cu_start; |
20253 | }; | |
20254 | ||
20255 | /* Write an address entry to OBSTACK. */ | |
b89be57b | 20256 | |
9291a0cd | 20257 | static void |
0a5429f6 DE |
20258 | add_address_entry (struct objfile *objfile, struct obstack *obstack, |
20259 | CORE_ADDR start, CORE_ADDR end, unsigned int cu_index) | |
9291a0cd | 20260 | { |
0a5429f6 | 20261 | offset_type cu_index_to_write; |
9291a0cd TT |
20262 | char addr[8]; |
20263 | CORE_ADDR baseaddr; | |
20264 | ||
20265 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
20266 | ||
0a5429f6 DE |
20267 | store_unsigned_integer (addr, 8, BFD_ENDIAN_LITTLE, start - baseaddr); |
20268 | obstack_grow (obstack, addr, 8); | |
20269 | store_unsigned_integer (addr, 8, BFD_ENDIAN_LITTLE, end - baseaddr); | |
20270 | obstack_grow (obstack, addr, 8); | |
20271 | cu_index_to_write = MAYBE_SWAP (cu_index); | |
20272 | obstack_grow (obstack, &cu_index_to_write, sizeof (offset_type)); | |
20273 | } | |
20274 | ||
20275 | /* Worker function for traversing an addrmap to build the address table. */ | |
20276 | ||
20277 | static int | |
20278 | add_address_entry_worker (void *datap, CORE_ADDR start_addr, void *obj) | |
20279 | { | |
20280 | struct addrmap_index_data *data = datap; | |
20281 | struct partial_symtab *pst = obj; | |
0a5429f6 DE |
20282 | |
20283 | if (data->previous_valid) | |
20284 | add_address_entry (data->objfile, data->addr_obstack, | |
20285 | data->previous_cu_start, start_addr, | |
20286 | data->previous_cu_index); | |
20287 | ||
20288 | data->previous_cu_start = start_addr; | |
20289 | if (pst != NULL) | |
20290 | { | |
20291 | struct psymtab_cu_index_map find_map, *map; | |
20292 | find_map.psymtab = pst; | |
20293 | map = htab_find (data->cu_index_htab, &find_map); | |
20294 | gdb_assert (map != NULL); | |
20295 | data->previous_cu_index = map->cu_index; | |
20296 | data->previous_valid = 1; | |
20297 | } | |
20298 | else | |
20299 | data->previous_valid = 0; | |
20300 | ||
20301 | return 0; | |
20302 | } | |
20303 | ||
20304 | /* Write OBJFILE's address map to OBSTACK. | |
20305 | CU_INDEX_HTAB is used to map addrmap entries to their CU indices | |
20306 | in the index file. */ | |
20307 | ||
20308 | static void | |
20309 | write_address_map (struct objfile *objfile, struct obstack *obstack, | |
20310 | htab_t cu_index_htab) | |
20311 | { | |
20312 | struct addrmap_index_data addrmap_index_data; | |
20313 | ||
20314 | /* When writing the address table, we have to cope with the fact that | |
20315 | the addrmap iterator only provides the start of a region; we have to | |
20316 | wait until the next invocation to get the start of the next region. */ | |
20317 | ||
20318 | addrmap_index_data.objfile = objfile; | |
20319 | addrmap_index_data.addr_obstack = obstack; | |
20320 | addrmap_index_data.cu_index_htab = cu_index_htab; | |
20321 | addrmap_index_data.previous_valid = 0; | |
20322 | ||
20323 | addrmap_foreach (objfile->psymtabs_addrmap, add_address_entry_worker, | |
20324 | &addrmap_index_data); | |
20325 | ||
20326 | /* It's highly unlikely the last entry (end address = 0xff...ff) | |
20327 | is valid, but we should still handle it. | |
20328 | The end address is recorded as the start of the next region, but that | |
20329 | doesn't work here. To cope we pass 0xff...ff, this is a rare situation | |
20330 | anyway. */ | |
20331 | if (addrmap_index_data.previous_valid) | |
20332 | add_address_entry (objfile, obstack, | |
20333 | addrmap_index_data.previous_cu_start, (CORE_ADDR) -1, | |
20334 | addrmap_index_data.previous_cu_index); | |
9291a0cd TT |
20335 | } |
20336 | ||
156942c7 DE |
20337 | /* Return the symbol kind of PSYM. */ |
20338 | ||
20339 | static gdb_index_symbol_kind | |
20340 | symbol_kind (struct partial_symbol *psym) | |
20341 | { | |
20342 | domain_enum domain = PSYMBOL_DOMAIN (psym); | |
20343 | enum address_class aclass = PSYMBOL_CLASS (psym); | |
20344 | ||
20345 | switch (domain) | |
20346 | { | |
20347 | case VAR_DOMAIN: | |
20348 | switch (aclass) | |
20349 | { | |
20350 | case LOC_BLOCK: | |
20351 | return GDB_INDEX_SYMBOL_KIND_FUNCTION; | |
20352 | case LOC_TYPEDEF: | |
20353 | return GDB_INDEX_SYMBOL_KIND_TYPE; | |
20354 | case LOC_COMPUTED: | |
20355 | case LOC_CONST_BYTES: | |
20356 | case LOC_OPTIMIZED_OUT: | |
20357 | case LOC_STATIC: | |
20358 | return GDB_INDEX_SYMBOL_KIND_VARIABLE; | |
20359 | case LOC_CONST: | |
20360 | /* Note: It's currently impossible to recognize psyms as enum values | |
20361 | short of reading the type info. For now punt. */ | |
20362 | return GDB_INDEX_SYMBOL_KIND_VARIABLE; | |
20363 | default: | |
20364 | /* There are other LOC_FOO values that one might want to classify | |
20365 | as variables, but dwarf2read.c doesn't currently use them. */ | |
20366 | return GDB_INDEX_SYMBOL_KIND_OTHER; | |
20367 | } | |
20368 | case STRUCT_DOMAIN: | |
20369 | return GDB_INDEX_SYMBOL_KIND_TYPE; | |
20370 | default: | |
20371 | return GDB_INDEX_SYMBOL_KIND_OTHER; | |
20372 | } | |
20373 | } | |
20374 | ||
9291a0cd | 20375 | /* Add a list of partial symbols to SYMTAB. */ |
b89be57b | 20376 | |
9291a0cd TT |
20377 | static void |
20378 | write_psymbols (struct mapped_symtab *symtab, | |
987d643c | 20379 | htab_t psyms_seen, |
9291a0cd TT |
20380 | struct partial_symbol **psymp, |
20381 | int count, | |
987d643c TT |
20382 | offset_type cu_index, |
20383 | int is_static) | |
9291a0cd TT |
20384 | { |
20385 | for (; count-- > 0; ++psymp) | |
20386 | { | |
156942c7 DE |
20387 | struct partial_symbol *psym = *psymp; |
20388 | void **slot; | |
987d643c | 20389 | |
156942c7 | 20390 | if (SYMBOL_LANGUAGE (psym) == language_ada) |
9291a0cd | 20391 | error (_("Ada is not currently supported by the index")); |
987d643c | 20392 | |
987d643c | 20393 | /* Only add a given psymbol once. */ |
156942c7 | 20394 | slot = htab_find_slot (psyms_seen, psym, INSERT); |
987d643c TT |
20395 | if (!*slot) |
20396 | { | |
156942c7 DE |
20397 | gdb_index_symbol_kind kind = symbol_kind (psym); |
20398 | ||
20399 | *slot = psym; | |
20400 | add_index_entry (symtab, SYMBOL_SEARCH_NAME (psym), | |
20401 | is_static, kind, cu_index); | |
987d643c | 20402 | } |
9291a0cd TT |
20403 | } |
20404 | } | |
20405 | ||
20406 | /* Write the contents of an ("unfinished") obstack to FILE. Throw an | |
20407 | exception if there is an error. */ | |
b89be57b | 20408 | |
9291a0cd TT |
20409 | static void |
20410 | write_obstack (FILE *file, struct obstack *obstack) | |
20411 | { | |
20412 | if (fwrite (obstack_base (obstack), 1, obstack_object_size (obstack), | |
20413 | file) | |
20414 | != obstack_object_size (obstack)) | |
20415 | error (_("couldn't data write to file")); | |
20416 | } | |
20417 | ||
20418 | /* Unlink a file if the argument is not NULL. */ | |
b89be57b | 20419 | |
9291a0cd TT |
20420 | static void |
20421 | unlink_if_set (void *p) | |
20422 | { | |
20423 | char **filename = p; | |
20424 | if (*filename) | |
20425 | unlink (*filename); | |
20426 | } | |
20427 | ||
1fd400ff TT |
20428 | /* A helper struct used when iterating over debug_types. */ |
20429 | struct signatured_type_index_data | |
20430 | { | |
20431 | struct objfile *objfile; | |
20432 | struct mapped_symtab *symtab; | |
20433 | struct obstack *types_list; | |
987d643c | 20434 | htab_t psyms_seen; |
1fd400ff TT |
20435 | int cu_index; |
20436 | }; | |
20437 | ||
20438 | /* A helper function that writes a single signatured_type to an | |
20439 | obstack. */ | |
b89be57b | 20440 | |
1fd400ff TT |
20441 | static int |
20442 | write_one_signatured_type (void **slot, void *d) | |
20443 | { | |
20444 | struct signatured_type_index_data *info = d; | |
20445 | struct signatured_type *entry = (struct signatured_type *) *slot; | |
e254ef6a DE |
20446 | struct dwarf2_per_cu_data *per_cu = &entry->per_cu; |
20447 | struct partial_symtab *psymtab = per_cu->v.psymtab; | |
1fd400ff TT |
20448 | gdb_byte val[8]; |
20449 | ||
20450 | write_psymbols (info->symtab, | |
987d643c | 20451 | info->psyms_seen, |
3e43a32a MS |
20452 | info->objfile->global_psymbols.list |
20453 | + psymtab->globals_offset, | |
987d643c TT |
20454 | psymtab->n_global_syms, info->cu_index, |
20455 | 0); | |
1fd400ff | 20456 | write_psymbols (info->symtab, |
987d643c | 20457 | info->psyms_seen, |
3e43a32a MS |
20458 | info->objfile->static_psymbols.list |
20459 | + psymtab->statics_offset, | |
987d643c TT |
20460 | psymtab->n_static_syms, info->cu_index, |
20461 | 1); | |
1fd400ff | 20462 | |
b64f50a1 JK |
20463 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, |
20464 | entry->per_cu.offset.sect_off); | |
1fd400ff | 20465 | obstack_grow (info->types_list, val, 8); |
3019eac3 DE |
20466 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, |
20467 | entry->type_offset_in_tu.cu_off); | |
1fd400ff TT |
20468 | obstack_grow (info->types_list, val, 8); |
20469 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, entry->signature); | |
20470 | obstack_grow (info->types_list, val, 8); | |
20471 | ||
20472 | ++info->cu_index; | |
20473 | ||
20474 | return 1; | |
20475 | } | |
20476 | ||
95554aad TT |
20477 | /* Recurse into all "included" dependencies and write their symbols as |
20478 | if they appeared in this psymtab. */ | |
20479 | ||
20480 | static void | |
20481 | recursively_write_psymbols (struct objfile *objfile, | |
20482 | struct partial_symtab *psymtab, | |
20483 | struct mapped_symtab *symtab, | |
20484 | htab_t psyms_seen, | |
20485 | offset_type cu_index) | |
20486 | { | |
20487 | int i; | |
20488 | ||
20489 | for (i = 0; i < psymtab->number_of_dependencies; ++i) | |
20490 | if (psymtab->dependencies[i]->user != NULL) | |
20491 | recursively_write_psymbols (objfile, psymtab->dependencies[i], | |
20492 | symtab, psyms_seen, cu_index); | |
20493 | ||
20494 | write_psymbols (symtab, | |
20495 | psyms_seen, | |
20496 | objfile->global_psymbols.list + psymtab->globals_offset, | |
20497 | psymtab->n_global_syms, cu_index, | |
20498 | 0); | |
20499 | write_psymbols (symtab, | |
20500 | psyms_seen, | |
20501 | objfile->static_psymbols.list + psymtab->statics_offset, | |
20502 | psymtab->n_static_syms, cu_index, | |
20503 | 1); | |
20504 | } | |
20505 | ||
9291a0cd | 20506 | /* Create an index file for OBJFILE in the directory DIR. */ |
b89be57b | 20507 | |
9291a0cd TT |
20508 | static void |
20509 | write_psymtabs_to_index (struct objfile *objfile, const char *dir) | |
20510 | { | |
20511 | struct cleanup *cleanup; | |
20512 | char *filename, *cleanup_filename; | |
1fd400ff TT |
20513 | struct obstack contents, addr_obstack, constant_pool, symtab_obstack; |
20514 | struct obstack cu_list, types_cu_list; | |
9291a0cd TT |
20515 | int i; |
20516 | FILE *out_file; | |
20517 | struct mapped_symtab *symtab; | |
20518 | offset_type val, size_of_contents, total_len; | |
20519 | struct stat st; | |
987d643c | 20520 | htab_t psyms_seen; |
0a5429f6 DE |
20521 | htab_t cu_index_htab; |
20522 | struct psymtab_cu_index_map *psymtab_cu_index_map; | |
9291a0cd | 20523 | |
b4f2f049 | 20524 | if (!objfile->psymtabs || !objfile->psymtabs_addrmap) |
9291a0cd | 20525 | return; |
b4f2f049 | 20526 | |
9291a0cd TT |
20527 | if (dwarf2_per_objfile->using_index) |
20528 | error (_("Cannot use an index to create the index")); | |
20529 | ||
8b70b953 TT |
20530 | if (VEC_length (dwarf2_section_info_def, dwarf2_per_objfile->types) > 1) |
20531 | error (_("Cannot make an index when the file has multiple .debug_types sections")); | |
20532 | ||
9291a0cd | 20533 | if (stat (objfile->name, &st) < 0) |
7e17e088 | 20534 | perror_with_name (objfile->name); |
9291a0cd TT |
20535 | |
20536 | filename = concat (dir, SLASH_STRING, lbasename (objfile->name), | |
20537 | INDEX_SUFFIX, (char *) NULL); | |
20538 | cleanup = make_cleanup (xfree, filename); | |
20539 | ||
20540 | out_file = fopen (filename, "wb"); | |
20541 | if (!out_file) | |
20542 | error (_("Can't open `%s' for writing"), filename); | |
20543 | ||
20544 | cleanup_filename = filename; | |
20545 | make_cleanup (unlink_if_set, &cleanup_filename); | |
20546 | ||
20547 | symtab = create_mapped_symtab (); | |
20548 | make_cleanup (cleanup_mapped_symtab, symtab); | |
20549 | ||
20550 | obstack_init (&addr_obstack); | |
20551 | make_cleanup_obstack_free (&addr_obstack); | |
20552 | ||
20553 | obstack_init (&cu_list); | |
20554 | make_cleanup_obstack_free (&cu_list); | |
20555 | ||
1fd400ff TT |
20556 | obstack_init (&types_cu_list); |
20557 | make_cleanup_obstack_free (&types_cu_list); | |
20558 | ||
987d643c TT |
20559 | psyms_seen = htab_create_alloc (100, htab_hash_pointer, htab_eq_pointer, |
20560 | NULL, xcalloc, xfree); | |
96408a79 | 20561 | make_cleanup_htab_delete (psyms_seen); |
987d643c | 20562 | |
0a5429f6 DE |
20563 | /* While we're scanning CU's create a table that maps a psymtab pointer |
20564 | (which is what addrmap records) to its index (which is what is recorded | |
20565 | in the index file). This will later be needed to write the address | |
20566 | table. */ | |
20567 | cu_index_htab = htab_create_alloc (100, | |
20568 | hash_psymtab_cu_index, | |
20569 | eq_psymtab_cu_index, | |
20570 | NULL, xcalloc, xfree); | |
96408a79 | 20571 | make_cleanup_htab_delete (cu_index_htab); |
0a5429f6 DE |
20572 | psymtab_cu_index_map = (struct psymtab_cu_index_map *) |
20573 | xmalloc (sizeof (struct psymtab_cu_index_map) | |
20574 | * dwarf2_per_objfile->n_comp_units); | |
20575 | make_cleanup (xfree, psymtab_cu_index_map); | |
20576 | ||
20577 | /* The CU list is already sorted, so we don't need to do additional | |
1fd400ff TT |
20578 | work here. Also, the debug_types entries do not appear in |
20579 | all_comp_units, but only in their own hash table. */ | |
9291a0cd TT |
20580 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
20581 | { | |
3e43a32a MS |
20582 | struct dwarf2_per_cu_data *per_cu |
20583 | = dwarf2_per_objfile->all_comp_units[i]; | |
e254ef6a | 20584 | struct partial_symtab *psymtab = per_cu->v.psymtab; |
9291a0cd | 20585 | gdb_byte val[8]; |
0a5429f6 DE |
20586 | struct psymtab_cu_index_map *map; |
20587 | void **slot; | |
9291a0cd | 20588 | |
95554aad TT |
20589 | if (psymtab->user == NULL) |
20590 | recursively_write_psymbols (objfile, psymtab, symtab, psyms_seen, i); | |
9291a0cd | 20591 | |
0a5429f6 DE |
20592 | map = &psymtab_cu_index_map[i]; |
20593 | map->psymtab = psymtab; | |
20594 | map->cu_index = i; | |
20595 | slot = htab_find_slot (cu_index_htab, map, INSERT); | |
20596 | gdb_assert (slot != NULL); | |
20597 | gdb_assert (*slot == NULL); | |
20598 | *slot = map; | |
9291a0cd | 20599 | |
b64f50a1 JK |
20600 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, |
20601 | per_cu->offset.sect_off); | |
9291a0cd | 20602 | obstack_grow (&cu_list, val, 8); |
e254ef6a | 20603 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, per_cu->length); |
9291a0cd TT |
20604 | obstack_grow (&cu_list, val, 8); |
20605 | } | |
20606 | ||
0a5429f6 DE |
20607 | /* Dump the address map. */ |
20608 | write_address_map (objfile, &addr_obstack, cu_index_htab); | |
20609 | ||
1fd400ff TT |
20610 | /* Write out the .debug_type entries, if any. */ |
20611 | if (dwarf2_per_objfile->signatured_types) | |
20612 | { | |
20613 | struct signatured_type_index_data sig_data; | |
20614 | ||
20615 | sig_data.objfile = objfile; | |
20616 | sig_data.symtab = symtab; | |
20617 | sig_data.types_list = &types_cu_list; | |
987d643c | 20618 | sig_data.psyms_seen = psyms_seen; |
1fd400ff TT |
20619 | sig_data.cu_index = dwarf2_per_objfile->n_comp_units; |
20620 | htab_traverse_noresize (dwarf2_per_objfile->signatured_types, | |
20621 | write_one_signatured_type, &sig_data); | |
20622 | } | |
20623 | ||
156942c7 DE |
20624 | /* Now that we've processed all symbols we can shrink their cu_indices |
20625 | lists. */ | |
20626 | uniquify_cu_indices (symtab); | |
20627 | ||
9291a0cd TT |
20628 | obstack_init (&constant_pool); |
20629 | make_cleanup_obstack_free (&constant_pool); | |
20630 | obstack_init (&symtab_obstack); | |
20631 | make_cleanup_obstack_free (&symtab_obstack); | |
20632 | write_hash_table (symtab, &symtab_obstack, &constant_pool); | |
20633 | ||
20634 | obstack_init (&contents); | |
20635 | make_cleanup_obstack_free (&contents); | |
1fd400ff | 20636 | size_of_contents = 6 * sizeof (offset_type); |
9291a0cd TT |
20637 | total_len = size_of_contents; |
20638 | ||
20639 | /* The version number. */ | |
796a7ff8 | 20640 | val = MAYBE_SWAP (8); |
9291a0cd TT |
20641 | obstack_grow (&contents, &val, sizeof (val)); |
20642 | ||
20643 | /* The offset of the CU list from the start of the file. */ | |
20644 | val = MAYBE_SWAP (total_len); | |
20645 | obstack_grow (&contents, &val, sizeof (val)); | |
20646 | total_len += obstack_object_size (&cu_list); | |
20647 | ||
1fd400ff TT |
20648 | /* The offset of the types CU list from the start of the file. */ |
20649 | val = MAYBE_SWAP (total_len); | |
20650 | obstack_grow (&contents, &val, sizeof (val)); | |
20651 | total_len += obstack_object_size (&types_cu_list); | |
20652 | ||
9291a0cd TT |
20653 | /* The offset of the address table from the start of the file. */ |
20654 | val = MAYBE_SWAP (total_len); | |
20655 | obstack_grow (&contents, &val, sizeof (val)); | |
20656 | total_len += obstack_object_size (&addr_obstack); | |
20657 | ||
20658 | /* The offset of the symbol table from the start of the file. */ | |
20659 | val = MAYBE_SWAP (total_len); | |
20660 | obstack_grow (&contents, &val, sizeof (val)); | |
20661 | total_len += obstack_object_size (&symtab_obstack); | |
20662 | ||
20663 | /* The offset of the constant pool from the start of the file. */ | |
20664 | val = MAYBE_SWAP (total_len); | |
20665 | obstack_grow (&contents, &val, sizeof (val)); | |
20666 | total_len += obstack_object_size (&constant_pool); | |
20667 | ||
20668 | gdb_assert (obstack_object_size (&contents) == size_of_contents); | |
20669 | ||
20670 | write_obstack (out_file, &contents); | |
20671 | write_obstack (out_file, &cu_list); | |
1fd400ff | 20672 | write_obstack (out_file, &types_cu_list); |
9291a0cd TT |
20673 | write_obstack (out_file, &addr_obstack); |
20674 | write_obstack (out_file, &symtab_obstack); | |
20675 | write_obstack (out_file, &constant_pool); | |
20676 | ||
20677 | fclose (out_file); | |
20678 | ||
20679 | /* We want to keep the file, so we set cleanup_filename to NULL | |
20680 | here. See unlink_if_set. */ | |
20681 | cleanup_filename = NULL; | |
20682 | ||
20683 | do_cleanups (cleanup); | |
20684 | } | |
20685 | ||
90476074 TT |
20686 | /* Implementation of the `save gdb-index' command. |
20687 | ||
20688 | Note that the file format used by this command is documented in the | |
20689 | GDB manual. Any changes here must be documented there. */ | |
11570e71 | 20690 | |
9291a0cd TT |
20691 | static void |
20692 | save_gdb_index_command (char *arg, int from_tty) | |
20693 | { | |
20694 | struct objfile *objfile; | |
20695 | ||
20696 | if (!arg || !*arg) | |
96d19272 | 20697 | error (_("usage: save gdb-index DIRECTORY")); |
9291a0cd TT |
20698 | |
20699 | ALL_OBJFILES (objfile) | |
20700 | { | |
20701 | struct stat st; | |
20702 | ||
20703 | /* If the objfile does not correspond to an actual file, skip it. */ | |
20704 | if (stat (objfile->name, &st) < 0) | |
20705 | continue; | |
20706 | ||
20707 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); | |
20708 | if (dwarf2_per_objfile) | |
20709 | { | |
20710 | volatile struct gdb_exception except; | |
20711 | ||
20712 | TRY_CATCH (except, RETURN_MASK_ERROR) | |
20713 | { | |
20714 | write_psymtabs_to_index (objfile, arg); | |
20715 | } | |
20716 | if (except.reason < 0) | |
20717 | exception_fprintf (gdb_stderr, except, | |
20718 | _("Error while writing index for `%s': "), | |
20719 | objfile->name); | |
20720 | } | |
20721 | } | |
dce234bc PP |
20722 | } |
20723 | ||
9291a0cd TT |
20724 | \f |
20725 | ||
9eae7c52 TT |
20726 | int dwarf2_always_disassemble; |
20727 | ||
20728 | static void | |
20729 | show_dwarf2_always_disassemble (struct ui_file *file, int from_tty, | |
20730 | struct cmd_list_element *c, const char *value) | |
20731 | { | |
3e43a32a MS |
20732 | fprintf_filtered (file, |
20733 | _("Whether to always disassemble " | |
20734 | "DWARF expressions is %s.\n"), | |
9eae7c52 TT |
20735 | value); |
20736 | } | |
20737 | ||
900e11f9 JK |
20738 | static void |
20739 | show_check_physname (struct ui_file *file, int from_tty, | |
20740 | struct cmd_list_element *c, const char *value) | |
20741 | { | |
20742 | fprintf_filtered (file, | |
20743 | _("Whether to check \"physname\" is %s.\n"), | |
20744 | value); | |
20745 | } | |
20746 | ||
6502dd73 DJ |
20747 | void _initialize_dwarf2_read (void); |
20748 | ||
20749 | void | |
20750 | _initialize_dwarf2_read (void) | |
20751 | { | |
96d19272 JK |
20752 | struct cmd_list_element *c; |
20753 | ||
dce234bc | 20754 | dwarf2_objfile_data_key |
c1bd65d0 | 20755 | = register_objfile_data_with_cleanup (NULL, dwarf2_per_objfile_free); |
ae038cb0 | 20756 | |
1bedd215 AC |
20757 | add_prefix_cmd ("dwarf2", class_maintenance, set_dwarf2_cmd, _("\ |
20758 | Set DWARF 2 specific variables.\n\ | |
20759 | Configure DWARF 2 variables such as the cache size"), | |
ae038cb0 DJ |
20760 | &set_dwarf2_cmdlist, "maintenance set dwarf2 ", |
20761 | 0/*allow-unknown*/, &maintenance_set_cmdlist); | |
20762 | ||
1bedd215 AC |
20763 | add_prefix_cmd ("dwarf2", class_maintenance, show_dwarf2_cmd, _("\ |
20764 | Show DWARF 2 specific variables\n\ | |
20765 | Show DWARF 2 variables such as the cache size"), | |
ae038cb0 DJ |
20766 | &show_dwarf2_cmdlist, "maintenance show dwarf2 ", |
20767 | 0/*allow-unknown*/, &maintenance_show_cmdlist); | |
20768 | ||
20769 | add_setshow_zinteger_cmd ("max-cache-age", class_obscure, | |
7915a72c AC |
20770 | &dwarf2_max_cache_age, _("\ |
20771 | Set the upper bound on the age of cached dwarf2 compilation units."), _("\ | |
20772 | Show the upper bound on the age of cached dwarf2 compilation units."), _("\ | |
20773 | A higher limit means that cached compilation units will be stored\n\ | |
20774 | in memory longer, and more total memory will be used. Zero disables\n\ | |
20775 | caching, which can slow down startup."), | |
2c5b56ce | 20776 | NULL, |
920d2a44 | 20777 | show_dwarf2_max_cache_age, |
2c5b56ce | 20778 | &set_dwarf2_cmdlist, |
ae038cb0 | 20779 | &show_dwarf2_cmdlist); |
d97bc12b | 20780 | |
9eae7c52 TT |
20781 | add_setshow_boolean_cmd ("always-disassemble", class_obscure, |
20782 | &dwarf2_always_disassemble, _("\ | |
20783 | Set whether `info address' always disassembles DWARF expressions."), _("\ | |
20784 | Show whether `info address' always disassembles DWARF expressions."), _("\ | |
20785 | When enabled, DWARF expressions are always printed in an assembly-like\n\ | |
20786 | syntax. When disabled, expressions will be printed in a more\n\ | |
20787 | conversational style, when possible."), | |
20788 | NULL, | |
20789 | show_dwarf2_always_disassemble, | |
20790 | &set_dwarf2_cmdlist, | |
20791 | &show_dwarf2_cmdlist); | |
20792 | ||
45cfd468 DE |
20793 | add_setshow_boolean_cmd ("dwarf2-read", no_class, &dwarf2_read_debug, _("\ |
20794 | Set debugging of the dwarf2 reader."), _("\ | |
20795 | Show debugging of the dwarf2 reader."), _("\ | |
20796 | When enabled, debugging messages are printed during dwarf2 reading\n\ | |
20797 | and symtab expansion."), | |
20798 | NULL, | |
20799 | NULL, | |
20800 | &setdebuglist, &showdebuglist); | |
20801 | ||
ccce17b0 | 20802 | add_setshow_zuinteger_cmd ("dwarf2-die", no_class, &dwarf2_die_debug, _("\ |
d97bc12b DE |
20803 | Set debugging of the dwarf2 DIE reader."), _("\ |
20804 | Show debugging of the dwarf2 DIE reader."), _("\ | |
20805 | When enabled (non-zero), DIEs are dumped after they are read in.\n\ | |
20806 | The value is the maximum depth to print."), | |
ccce17b0 YQ |
20807 | NULL, |
20808 | NULL, | |
20809 | &setdebuglist, &showdebuglist); | |
9291a0cd | 20810 | |
900e11f9 JK |
20811 | add_setshow_boolean_cmd ("check-physname", no_class, &check_physname, _("\ |
20812 | Set cross-checking of \"physname\" code against demangler."), _("\ | |
20813 | Show cross-checking of \"physname\" code against demangler."), _("\ | |
20814 | When enabled, GDB's internal \"physname\" code is checked against\n\ | |
20815 | the demangler."), | |
20816 | NULL, show_check_physname, | |
20817 | &setdebuglist, &showdebuglist); | |
20818 | ||
e615022a DE |
20819 | add_setshow_boolean_cmd ("use-deprecated-index-sections", |
20820 | no_class, &use_deprecated_index_sections, _("\ | |
20821 | Set whether to use deprecated gdb_index sections."), _("\ | |
20822 | Show whether to use deprecated gdb_index sections."), _("\ | |
20823 | When enabled, deprecated .gdb_index sections are used anyway.\n\ | |
20824 | Normally they are ignored either because of a missing feature or\n\ | |
20825 | performance issue.\n\ | |
20826 | Warning: This option must be enabled before gdb reads the file."), | |
20827 | NULL, | |
20828 | NULL, | |
20829 | &setlist, &showlist); | |
20830 | ||
96d19272 | 20831 | c = add_cmd ("gdb-index", class_files, save_gdb_index_command, |
11570e71 | 20832 | _("\ |
fc1a9d6e | 20833 | Save a gdb-index file.\n\ |
11570e71 | 20834 | Usage: save gdb-index DIRECTORY"), |
96d19272 JK |
20835 | &save_cmdlist); |
20836 | set_cmd_completer (c, filename_completer); | |
f1e6e072 TT |
20837 | |
20838 | dwarf2_locexpr_index = register_symbol_computed_impl (LOC_COMPUTED, | |
20839 | &dwarf2_locexpr_funcs); | |
20840 | dwarf2_loclist_index = register_symbol_computed_impl (LOC_COMPUTED, | |
20841 | &dwarf2_loclist_funcs); | |
20842 | ||
20843 | dwarf2_locexpr_block_index = register_symbol_block_impl (LOC_BLOCK, | |
20844 | &dwarf2_block_frame_base_locexpr_funcs); | |
20845 | dwarf2_loclist_block_index = register_symbol_block_impl (LOC_BLOCK, | |
20846 | &dwarf2_block_frame_base_loclist_funcs); | |
6502dd73 | 20847 | } |