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 | 58 | #include "exceptions.h" |
53ce3c39 | 59 | #include <sys/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" |
614c279d | 71 | #include "filestuff.h" |
dc294be5 | 72 | #include "build-id.h" |
4c2df51b | 73 | |
c906108c | 74 | #include <fcntl.h> |
0e9f083f | 75 | #include <string.h> |
4bdf3d34 | 76 | #include "gdb_assert.h" |
c906108c | 77 | #include <sys/types.h> |
d8151005 | 78 | |
34eaf542 TT |
79 | typedef struct symbol *symbolp; |
80 | DEF_VEC_P (symbolp); | |
81 | ||
73be47f5 DE |
82 | /* When == 1, print basic high level tracing messages. |
83 | When > 1, be more verbose. | |
45cfd468 | 84 | This is in contrast to the low level DIE reading of dwarf2_die_debug. */ |
73be47f5 | 85 | static unsigned int dwarf2_read_debug = 0; |
45cfd468 | 86 | |
d97bc12b | 87 | /* When non-zero, dump DIEs after they are read in. */ |
ccce17b0 | 88 | static unsigned int dwarf2_die_debug = 0; |
d97bc12b | 89 | |
900e11f9 JK |
90 | /* When non-zero, cross-check physname against demangler. */ |
91 | static int check_physname = 0; | |
92 | ||
481860b3 | 93 | /* When non-zero, do not reject deprecated .gdb_index sections. */ |
e615022a | 94 | static int use_deprecated_index_sections = 0; |
481860b3 | 95 | |
6502dd73 DJ |
96 | static const struct objfile_data *dwarf2_objfile_data_key; |
97 | ||
f1e6e072 TT |
98 | /* The "aclass" indices for various kinds of computed DWARF symbols. */ |
99 | ||
100 | static int dwarf2_locexpr_index; | |
101 | static int dwarf2_loclist_index; | |
102 | static int dwarf2_locexpr_block_index; | |
103 | static int dwarf2_loclist_block_index; | |
104 | ||
73869dc2 DE |
105 | /* A descriptor for dwarf sections. |
106 | ||
107 | S.ASECTION, SIZE are typically initialized when the objfile is first | |
108 | scanned. BUFFER, READIN are filled in later when the section is read. | |
109 | If the section contained compressed data then SIZE is updated to record | |
110 | the uncompressed size of the section. | |
111 | ||
112 | DWP file format V2 introduces a wrinkle that is easiest to handle by | |
113 | creating the concept of virtual sections contained within a real section. | |
114 | In DWP V2 the sections of the input DWO files are concatenated together | |
115 | into one section, but section offsets are kept relative to the original | |
116 | input section. | |
117 | If this is a virtual dwp-v2 section, S.CONTAINING_SECTION is a backlink to | |
118 | the real section this "virtual" section is contained in, and BUFFER,SIZE | |
119 | describe the virtual section. */ | |
120 | ||
dce234bc PP |
121 | struct dwarf2_section_info |
122 | { | |
73869dc2 DE |
123 | union |
124 | { | |
e5aa3347 | 125 | /* If this is a real section, the bfd section. */ |
73869dc2 DE |
126 | asection *asection; |
127 | /* If this is a virtual section, pointer to the containing ("real") | |
e5aa3347 | 128 | section. */ |
73869dc2 DE |
129 | struct dwarf2_section_info *containing_section; |
130 | } s; | |
19ac8c2e | 131 | /* Pointer to section data, only valid if readin. */ |
d521ce57 | 132 | const gdb_byte *buffer; |
73869dc2 | 133 | /* The size of the section, real or virtual. */ |
dce234bc | 134 | bfd_size_type size; |
73869dc2 DE |
135 | /* If this is a virtual section, the offset in the real section. |
136 | Only valid if is_virtual. */ | |
137 | bfd_size_type virtual_offset; | |
be391dca | 138 | /* True if we have tried to read this section. */ |
73869dc2 DE |
139 | char readin; |
140 | /* True if this is a virtual section, False otherwise. | |
141 | This specifies which of s.asection and s.containing_section to use. */ | |
142 | char is_virtual; | |
dce234bc PP |
143 | }; |
144 | ||
8b70b953 TT |
145 | typedef struct dwarf2_section_info dwarf2_section_info_def; |
146 | DEF_VEC_O (dwarf2_section_info_def); | |
147 | ||
9291a0cd TT |
148 | /* All offsets in the index are of this type. It must be |
149 | architecture-independent. */ | |
150 | typedef uint32_t offset_type; | |
151 | ||
152 | DEF_VEC_I (offset_type); | |
153 | ||
156942c7 DE |
154 | /* Ensure only legit values are used. */ |
155 | #define DW2_GDB_INDEX_SYMBOL_STATIC_SET_VALUE(cu_index, value) \ | |
156 | do { \ | |
157 | gdb_assert ((unsigned int) (value) <= 1); \ | |
158 | GDB_INDEX_SYMBOL_STATIC_SET_VALUE((cu_index), (value)); \ | |
159 | } while (0) | |
160 | ||
161 | /* Ensure only legit values are used. */ | |
162 | #define DW2_GDB_INDEX_SYMBOL_KIND_SET_VALUE(cu_index, value) \ | |
163 | do { \ | |
164 | gdb_assert ((value) >= GDB_INDEX_SYMBOL_KIND_TYPE \ | |
165 | && (value) <= GDB_INDEX_SYMBOL_KIND_OTHER); \ | |
166 | GDB_INDEX_SYMBOL_KIND_SET_VALUE((cu_index), (value)); \ | |
167 | } while (0) | |
168 | ||
169 | /* Ensure we don't use more than the alloted nuber of bits for the CU. */ | |
170 | #define DW2_GDB_INDEX_CU_SET_VALUE(cu_index, value) \ | |
171 | do { \ | |
172 | gdb_assert (((value) & ~GDB_INDEX_CU_MASK) == 0); \ | |
173 | GDB_INDEX_CU_SET_VALUE((cu_index), (value)); \ | |
174 | } while (0) | |
175 | ||
9291a0cd TT |
176 | /* A description of the mapped index. The file format is described in |
177 | a comment by the code that writes the index. */ | |
178 | struct mapped_index | |
179 | { | |
559a7a62 JK |
180 | /* Index data format version. */ |
181 | int version; | |
182 | ||
9291a0cd TT |
183 | /* The total length of the buffer. */ |
184 | off_t total_size; | |
b11b1f88 | 185 | |
9291a0cd TT |
186 | /* A pointer to the address table data. */ |
187 | const gdb_byte *address_table; | |
b11b1f88 | 188 | |
9291a0cd TT |
189 | /* Size of the address table data in bytes. */ |
190 | offset_type address_table_size; | |
b11b1f88 | 191 | |
3876f04e DE |
192 | /* The symbol table, implemented as a hash table. */ |
193 | const offset_type *symbol_table; | |
b11b1f88 | 194 | |
9291a0cd | 195 | /* Size in slots, each slot is 2 offset_types. */ |
3876f04e | 196 | offset_type symbol_table_slots; |
b11b1f88 | 197 | |
9291a0cd TT |
198 | /* A pointer to the constant pool. */ |
199 | const char *constant_pool; | |
200 | }; | |
201 | ||
95554aad TT |
202 | typedef struct dwarf2_per_cu_data *dwarf2_per_cu_ptr; |
203 | DEF_VEC_P (dwarf2_per_cu_ptr); | |
204 | ||
9cdd5dbd DE |
205 | /* Collection of data recorded per objfile. |
206 | This hangs off of dwarf2_objfile_data_key. */ | |
207 | ||
6502dd73 DJ |
208 | struct dwarf2_per_objfile |
209 | { | |
dce234bc PP |
210 | struct dwarf2_section_info info; |
211 | struct dwarf2_section_info abbrev; | |
212 | struct dwarf2_section_info line; | |
dce234bc PP |
213 | struct dwarf2_section_info loc; |
214 | struct dwarf2_section_info macinfo; | |
cf2c3c16 | 215 | struct dwarf2_section_info macro; |
dce234bc PP |
216 | struct dwarf2_section_info str; |
217 | struct dwarf2_section_info ranges; | |
3019eac3 | 218 | struct dwarf2_section_info addr; |
dce234bc PP |
219 | struct dwarf2_section_info frame; |
220 | struct dwarf2_section_info eh_frame; | |
9291a0cd | 221 | struct dwarf2_section_info gdb_index; |
ae038cb0 | 222 | |
8b70b953 TT |
223 | VEC (dwarf2_section_info_def) *types; |
224 | ||
be391dca TT |
225 | /* Back link. */ |
226 | struct objfile *objfile; | |
227 | ||
d467dd73 | 228 | /* Table of all the compilation units. This is used to locate |
10b3939b | 229 | the target compilation unit of a particular reference. */ |
ae038cb0 DJ |
230 | struct dwarf2_per_cu_data **all_comp_units; |
231 | ||
232 | /* The number of compilation units in ALL_COMP_UNITS. */ | |
233 | int n_comp_units; | |
234 | ||
1fd400ff | 235 | /* The number of .debug_types-related CUs. */ |
d467dd73 | 236 | int n_type_units; |
1fd400ff | 237 | |
a2ce51a0 DE |
238 | /* The .debug_types-related CUs (TUs). |
239 | This is stored in malloc space because we may realloc it. */ | |
b4dd5633 | 240 | struct signatured_type **all_type_units; |
1fd400ff | 241 | |
f4dc4d17 DE |
242 | /* The number of entries in all_type_unit_groups. */ |
243 | int n_type_unit_groups; | |
244 | ||
245 | /* Table of type unit groups. | |
246 | This exists to make it easy to iterate over all CUs and TU groups. */ | |
247 | struct type_unit_group **all_type_unit_groups; | |
248 | ||
249 | /* Table of struct type_unit_group objects. | |
250 | The hash key is the DW_AT_stmt_list value. */ | |
251 | htab_t type_unit_groups; | |
72dca2f5 | 252 | |
348e048f DE |
253 | /* A table mapping .debug_types signatures to its signatured_type entry. |
254 | This is NULL if the .debug_types section hasn't been read in yet. */ | |
255 | htab_t signatured_types; | |
256 | ||
f4dc4d17 DE |
257 | /* Type unit statistics, to see how well the scaling improvements |
258 | are doing. */ | |
259 | struct tu_stats | |
260 | { | |
261 | int nr_uniq_abbrev_tables; | |
262 | int nr_symtabs; | |
263 | int nr_symtab_sharers; | |
264 | int nr_stmt_less_type_units; | |
265 | } tu_stats; | |
266 | ||
267 | /* A chain of compilation units that are currently read in, so that | |
268 | they can be freed later. */ | |
269 | struct dwarf2_per_cu_data *read_in_chain; | |
270 | ||
3019eac3 DE |
271 | /* A table mapping DW_AT_dwo_name values to struct dwo_file objects. |
272 | This is NULL if the table hasn't been allocated yet. */ | |
273 | htab_t dwo_files; | |
274 | ||
80626a55 DE |
275 | /* Non-zero if we've check for whether there is a DWP file. */ |
276 | int dwp_checked; | |
277 | ||
278 | /* The DWP file if there is one, or NULL. */ | |
279 | struct dwp_file *dwp_file; | |
280 | ||
36586728 TT |
281 | /* The shared '.dwz' file, if one exists. This is used when the |
282 | original data was compressed using 'dwz -m'. */ | |
283 | struct dwz_file *dwz_file; | |
284 | ||
72dca2f5 FR |
285 | /* A flag indicating wether this objfile has a section loaded at a |
286 | VMA of 0. */ | |
287 | int has_section_at_zero; | |
9291a0cd | 288 | |
ae2de4f8 DE |
289 | /* True if we are using the mapped index, |
290 | or we are faking it for OBJF_READNOW's sake. */ | |
9291a0cd TT |
291 | unsigned char using_index; |
292 | ||
ae2de4f8 | 293 | /* The mapped index, or NULL if .gdb_index is missing or not being used. */ |
9291a0cd | 294 | struct mapped_index *index_table; |
98bfdba5 | 295 | |
7b9f3c50 | 296 | /* When using index_table, this keeps track of all quick_file_names entries. |
56e64610 DE |
297 | TUs typically share line table entries with a CU, so we maintain a |
298 | separate table of all line table entries to support the sharing. | |
299 | Note that while there can be way more TUs than CUs, we've already | |
300 | sorted all the TUs into "type unit groups", grouped by their | |
301 | DW_AT_stmt_list value. Therefore the only sharing done here is with a | |
302 | CU and its associated TU group if there is one. */ | |
7b9f3c50 DE |
303 | htab_t quick_file_names_table; |
304 | ||
98bfdba5 PA |
305 | /* Set during partial symbol reading, to prevent queueing of full |
306 | symbols. */ | |
307 | int reading_partial_symbols; | |
673bfd45 | 308 | |
dee91e82 | 309 | /* Table mapping type DIEs to their struct type *. |
673bfd45 | 310 | This is NULL if not allocated yet. |
02142a6c | 311 | The mapping is done via (CU/TU + DIE offset) -> type. */ |
dee91e82 | 312 | htab_t die_type_hash; |
95554aad TT |
313 | |
314 | /* The CUs we recently read. */ | |
315 | VEC (dwarf2_per_cu_ptr) *just_read_cus; | |
6502dd73 DJ |
316 | }; |
317 | ||
318 | static struct dwarf2_per_objfile *dwarf2_per_objfile; | |
c906108c | 319 | |
251d32d9 | 320 | /* Default names of the debugging sections. */ |
c906108c | 321 | |
233a11ab CS |
322 | /* Note that if the debugging section has been compressed, it might |
323 | have a name like .zdebug_info. */ | |
324 | ||
9cdd5dbd DE |
325 | static const struct dwarf2_debug_sections dwarf2_elf_names = |
326 | { | |
251d32d9 TG |
327 | { ".debug_info", ".zdebug_info" }, |
328 | { ".debug_abbrev", ".zdebug_abbrev" }, | |
329 | { ".debug_line", ".zdebug_line" }, | |
330 | { ".debug_loc", ".zdebug_loc" }, | |
331 | { ".debug_macinfo", ".zdebug_macinfo" }, | |
cf2c3c16 | 332 | { ".debug_macro", ".zdebug_macro" }, |
251d32d9 TG |
333 | { ".debug_str", ".zdebug_str" }, |
334 | { ".debug_ranges", ".zdebug_ranges" }, | |
335 | { ".debug_types", ".zdebug_types" }, | |
3019eac3 | 336 | { ".debug_addr", ".zdebug_addr" }, |
251d32d9 TG |
337 | { ".debug_frame", ".zdebug_frame" }, |
338 | { ".eh_frame", NULL }, | |
24d3216f TT |
339 | { ".gdb_index", ".zgdb_index" }, |
340 | 23 | |
251d32d9 | 341 | }; |
c906108c | 342 | |
80626a55 | 343 | /* List of DWO/DWP sections. */ |
3019eac3 | 344 | |
80626a55 | 345 | static const struct dwop_section_names |
3019eac3 DE |
346 | { |
347 | struct dwarf2_section_names abbrev_dwo; | |
348 | struct dwarf2_section_names info_dwo; | |
349 | struct dwarf2_section_names line_dwo; | |
350 | struct dwarf2_section_names loc_dwo; | |
09262596 DE |
351 | struct dwarf2_section_names macinfo_dwo; |
352 | struct dwarf2_section_names macro_dwo; | |
3019eac3 DE |
353 | struct dwarf2_section_names str_dwo; |
354 | struct dwarf2_section_names str_offsets_dwo; | |
355 | struct dwarf2_section_names types_dwo; | |
80626a55 DE |
356 | struct dwarf2_section_names cu_index; |
357 | struct dwarf2_section_names tu_index; | |
3019eac3 | 358 | } |
80626a55 | 359 | dwop_section_names = |
3019eac3 DE |
360 | { |
361 | { ".debug_abbrev.dwo", ".zdebug_abbrev.dwo" }, | |
362 | { ".debug_info.dwo", ".zdebug_info.dwo" }, | |
363 | { ".debug_line.dwo", ".zdebug_line.dwo" }, | |
364 | { ".debug_loc.dwo", ".zdebug_loc.dwo" }, | |
09262596 DE |
365 | { ".debug_macinfo.dwo", ".zdebug_macinfo.dwo" }, |
366 | { ".debug_macro.dwo", ".zdebug_macro.dwo" }, | |
3019eac3 DE |
367 | { ".debug_str.dwo", ".zdebug_str.dwo" }, |
368 | { ".debug_str_offsets.dwo", ".zdebug_str_offsets.dwo" }, | |
369 | { ".debug_types.dwo", ".zdebug_types.dwo" }, | |
80626a55 DE |
370 | { ".debug_cu_index", ".zdebug_cu_index" }, |
371 | { ".debug_tu_index", ".zdebug_tu_index" }, | |
3019eac3 DE |
372 | }; |
373 | ||
c906108c SS |
374 | /* local data types */ |
375 | ||
107d2387 AC |
376 | /* The data in a compilation unit header, after target2host |
377 | translation, looks like this. */ | |
c906108c | 378 | struct comp_unit_head |
a738430d | 379 | { |
c764a876 | 380 | unsigned int length; |
a738430d | 381 | short version; |
a738430d MK |
382 | unsigned char addr_size; |
383 | unsigned char signed_addr_p; | |
b64f50a1 | 384 | sect_offset abbrev_offset; |
57349743 | 385 | |
a738430d MK |
386 | /* Size of file offsets; either 4 or 8. */ |
387 | unsigned int offset_size; | |
57349743 | 388 | |
a738430d MK |
389 | /* Size of the length field; either 4 or 12. */ |
390 | unsigned int initial_length_size; | |
57349743 | 391 | |
a738430d MK |
392 | /* Offset to the first byte of this compilation unit header in the |
393 | .debug_info section, for resolving relative reference dies. */ | |
b64f50a1 | 394 | sect_offset offset; |
57349743 | 395 | |
d00adf39 DE |
396 | /* Offset to first die in this cu from the start of the cu. |
397 | This will be the first byte following the compilation unit header. */ | |
b64f50a1 | 398 | cu_offset first_die_offset; |
a738430d | 399 | }; |
c906108c | 400 | |
3da10d80 KS |
401 | /* Type used for delaying computation of method physnames. |
402 | See comments for compute_delayed_physnames. */ | |
403 | struct delayed_method_info | |
404 | { | |
405 | /* The type to which the method is attached, i.e., its parent class. */ | |
406 | struct type *type; | |
407 | ||
408 | /* The index of the method in the type's function fieldlists. */ | |
409 | int fnfield_index; | |
410 | ||
411 | /* The index of the method in the fieldlist. */ | |
412 | int index; | |
413 | ||
414 | /* The name of the DIE. */ | |
415 | const char *name; | |
416 | ||
417 | /* The DIE associated with this method. */ | |
418 | struct die_info *die; | |
419 | }; | |
420 | ||
421 | typedef struct delayed_method_info delayed_method_info; | |
422 | DEF_VEC_O (delayed_method_info); | |
423 | ||
e7c27a73 DJ |
424 | /* Internal state when decoding a particular compilation unit. */ |
425 | struct dwarf2_cu | |
426 | { | |
427 | /* The objfile containing this compilation unit. */ | |
428 | struct objfile *objfile; | |
429 | ||
d00adf39 | 430 | /* The header of the compilation unit. */ |
e7c27a73 | 431 | struct comp_unit_head header; |
e142c38c | 432 | |
d00adf39 DE |
433 | /* Base address of this compilation unit. */ |
434 | CORE_ADDR base_address; | |
435 | ||
436 | /* Non-zero if base_address has been set. */ | |
437 | int base_known; | |
438 | ||
e142c38c DJ |
439 | /* The language we are debugging. */ |
440 | enum language language; | |
441 | const struct language_defn *language_defn; | |
442 | ||
b0f35d58 DL |
443 | const char *producer; |
444 | ||
e142c38c DJ |
445 | /* The generic symbol table building routines have separate lists for |
446 | file scope symbols and all all other scopes (local scopes). So | |
447 | we need to select the right one to pass to add_symbol_to_list(). | |
448 | We do it by keeping a pointer to the correct list in list_in_scope. | |
449 | ||
450 | FIXME: The original dwarf code just treated the file scope as the | |
451 | first local scope, and all other local scopes as nested local | |
452 | scopes, and worked fine. Check to see if we really need to | |
453 | distinguish these in buildsym.c. */ | |
454 | struct pending **list_in_scope; | |
455 | ||
433df2d4 DE |
456 | /* The abbrev table for this CU. |
457 | Normally this points to the abbrev table in the objfile. | |
458 | But if DWO_UNIT is non-NULL this is the abbrev table in the DWO file. */ | |
459 | struct abbrev_table *abbrev_table; | |
72bf9492 | 460 | |
b64f50a1 JK |
461 | /* Hash table holding all the loaded partial DIEs |
462 | with partial_die->offset.SECT_OFF as hash. */ | |
72bf9492 DJ |
463 | htab_t partial_dies; |
464 | ||
465 | /* Storage for things with the same lifetime as this read-in compilation | |
466 | unit, including partial DIEs. */ | |
467 | struct obstack comp_unit_obstack; | |
468 | ||
ae038cb0 DJ |
469 | /* When multiple dwarf2_cu structures are living in memory, this field |
470 | chains them all together, so that they can be released efficiently. | |
471 | We will probably also want a generation counter so that most-recently-used | |
472 | compilation units are cached... */ | |
473 | struct dwarf2_per_cu_data *read_in_chain; | |
474 | ||
69d751e3 | 475 | /* Backlink to our per_cu entry. */ |
ae038cb0 DJ |
476 | struct dwarf2_per_cu_data *per_cu; |
477 | ||
478 | /* How many compilation units ago was this CU last referenced? */ | |
479 | int last_used; | |
480 | ||
b64f50a1 JK |
481 | /* A hash table of DIE cu_offset for following references with |
482 | die_info->offset.sect_off as hash. */ | |
51545339 | 483 | htab_t die_hash; |
10b3939b DJ |
484 | |
485 | /* Full DIEs if read in. */ | |
486 | struct die_info *dies; | |
487 | ||
488 | /* A set of pointers to dwarf2_per_cu_data objects for compilation | |
489 | units referenced by this one. Only set during full symbol processing; | |
490 | partial symbol tables do not have dependencies. */ | |
491 | htab_t dependencies; | |
492 | ||
cb1df416 DJ |
493 | /* Header data from the line table, during full symbol processing. */ |
494 | struct line_header *line_header; | |
495 | ||
3da10d80 KS |
496 | /* A list of methods which need to have physnames computed |
497 | after all type information has been read. */ | |
498 | VEC (delayed_method_info) *method_list; | |
499 | ||
96408a79 SA |
500 | /* To be copied to symtab->call_site_htab. */ |
501 | htab_t call_site_htab; | |
502 | ||
034e5797 DE |
503 | /* Non-NULL if this CU came from a DWO file. |
504 | There is an invariant here that is important to remember: | |
505 | Except for attributes copied from the top level DIE in the "main" | |
506 | (or "stub") file in preparation for reading the DWO file | |
507 | (e.g., DW_AT_GNU_addr_base), we KISS: there is only *one* CU. | |
508 | Either there isn't a DWO file (in which case this is NULL and the point | |
509 | is moot), or there is and either we're not going to read it (in which | |
510 | case this is NULL) or there is and we are reading it (in which case this | |
511 | is non-NULL). */ | |
3019eac3 DE |
512 | struct dwo_unit *dwo_unit; |
513 | ||
514 | /* The DW_AT_addr_base attribute if present, zero otherwise | |
515 | (zero is a valid value though). | |
516 | Note this value comes from the stub CU/TU's DIE. */ | |
517 | ULONGEST addr_base; | |
518 | ||
2e3cf129 DE |
519 | /* The DW_AT_ranges_base attribute if present, zero otherwise |
520 | (zero is a valid value though). | |
521 | Note this value comes from the stub CU/TU's DIE. | |
522 | Also note that the value is zero in the non-DWO case so this value can | |
ab435259 DE |
523 | be used without needing to know whether DWO files are in use or not. |
524 | N.B. This does not apply to DW_AT_ranges appearing in | |
525 | DW_TAG_compile_unit dies. This is a bit of a wart, consider if ever | |
526 | DW_AT_ranges appeared in the DW_TAG_compile_unit of DWO DIEs: then | |
527 | DW_AT_ranges_base *would* have to be applied, and we'd have to care | |
528 | whether the DW_AT_ranges attribute came from the skeleton or DWO. */ | |
2e3cf129 DE |
529 | ULONGEST ranges_base; |
530 | ||
ae038cb0 DJ |
531 | /* Mark used when releasing cached dies. */ |
532 | unsigned int mark : 1; | |
533 | ||
8be455d7 JK |
534 | /* This CU references .debug_loc. See the symtab->locations_valid field. |
535 | This test is imperfect as there may exist optimized debug code not using | |
536 | any location list and still facing inlining issues if handled as | |
537 | unoptimized code. For a future better test see GCC PR other/32998. */ | |
8be455d7 | 538 | unsigned int has_loclist : 1; |
ba919b58 | 539 | |
1b80a9fa JK |
540 | /* These cache the results for producer_is_* fields. CHECKED_PRODUCER is set |
541 | if all the producer_is_* fields are valid. This information is cached | |
542 | because profiling CU expansion showed excessive time spent in | |
543 | producer_is_gxx_lt_4_6. */ | |
ba919b58 TT |
544 | unsigned int checked_producer : 1; |
545 | unsigned int producer_is_gxx_lt_4_6 : 1; | |
1b80a9fa | 546 | unsigned int producer_is_gcc_lt_4_3 : 1; |
685b1105 | 547 | unsigned int producer_is_icc : 1; |
4d4ec4e5 TT |
548 | |
549 | /* When set, the file that we're processing is known to have | |
550 | debugging info for C++ namespaces. GCC 3.3.x did not produce | |
551 | this information, but later versions do. */ | |
552 | ||
553 | unsigned int processing_has_namespace_info : 1; | |
e7c27a73 DJ |
554 | }; |
555 | ||
10b3939b DJ |
556 | /* Persistent data held for a compilation unit, even when not |
557 | processing it. We put a pointer to this structure in the | |
28dee7f5 | 558 | read_symtab_private field of the psymtab. */ |
10b3939b | 559 | |
ae038cb0 DJ |
560 | struct dwarf2_per_cu_data |
561 | { | |
36586728 | 562 | /* The start offset and length of this compilation unit. |
45452591 | 563 | NOTE: Unlike comp_unit_head.length, this length includes |
3019eac3 DE |
564 | initial_length_size. |
565 | If the DIE refers to a DWO file, this is always of the original die, | |
566 | not the DWO file. */ | |
b64f50a1 | 567 | sect_offset offset; |
36586728 | 568 | unsigned int length; |
ae038cb0 DJ |
569 | |
570 | /* Flag indicating this compilation unit will be read in before | |
571 | any of the current compilation units are processed. */ | |
c764a876 | 572 | unsigned int queued : 1; |
ae038cb0 | 573 | |
0d99eb77 DE |
574 | /* This flag will be set when reading partial DIEs if we need to load |
575 | absolutely all DIEs for this compilation unit, instead of just the ones | |
576 | we think are interesting. It gets set if we look for a DIE in the | |
5afb4e99 DJ |
577 | hash table and don't find it. */ |
578 | unsigned int load_all_dies : 1; | |
579 | ||
0186c6a7 DE |
580 | /* Non-zero if this CU is from .debug_types. |
581 | Struct dwarf2_per_cu_data is contained in struct signatured_type iff | |
582 | this is non-zero. */ | |
3019eac3 DE |
583 | unsigned int is_debug_types : 1; |
584 | ||
36586728 TT |
585 | /* Non-zero if this CU is from the .dwz file. */ |
586 | unsigned int is_dwz : 1; | |
587 | ||
a2ce51a0 DE |
588 | /* Non-zero if reading a TU directly from a DWO file, bypassing the stub. |
589 | This flag is only valid if is_debug_types is true. | |
590 | We can't read a CU directly from a DWO file: There are required | |
591 | attributes in the stub. */ | |
592 | unsigned int reading_dwo_directly : 1; | |
593 | ||
7ee85ab1 DE |
594 | /* Non-zero if the TU has been read. |
595 | This is used to assist the "Stay in DWO Optimization" for Fission: | |
596 | When reading a DWO, it's faster to read TUs from the DWO instead of | |
597 | fetching them from random other DWOs (due to comdat folding). | |
598 | If the TU has already been read, the optimization is unnecessary | |
599 | (and unwise - we don't want to change where gdb thinks the TU lives | |
600 | "midflight"). | |
601 | This flag is only valid if is_debug_types is true. */ | |
602 | unsigned int tu_read : 1; | |
603 | ||
3019eac3 DE |
604 | /* The section this CU/TU lives in. |
605 | If the DIE refers to a DWO file, this is always the original die, | |
606 | not the DWO file. */ | |
8a0459fd | 607 | struct dwarf2_section_info *section; |
348e048f | 608 | |
17ea53c3 JK |
609 | /* Set to non-NULL iff this CU is currently loaded. When it gets freed out |
610 | of the CU cache it gets reset to NULL again. */ | |
ae038cb0 | 611 | struct dwarf2_cu *cu; |
1c379e20 | 612 | |
9cdd5dbd DE |
613 | /* The corresponding objfile. |
614 | Normally we can get the objfile from dwarf2_per_objfile. | |
615 | However we can enter this file with just a "per_cu" handle. */ | |
9291a0cd TT |
616 | struct objfile *objfile; |
617 | ||
618 | /* When using partial symbol tables, the 'psymtab' field is active. | |
619 | Otherwise the 'quick' field is active. */ | |
620 | union | |
621 | { | |
622 | /* The partial symbol table associated with this compilation unit, | |
95554aad | 623 | or NULL for unread partial units. */ |
9291a0cd TT |
624 | struct partial_symtab *psymtab; |
625 | ||
626 | /* Data needed by the "quick" functions. */ | |
627 | struct dwarf2_per_cu_quick_data *quick; | |
628 | } v; | |
95554aad | 629 | |
796a7ff8 DE |
630 | /* The CUs we import using DW_TAG_imported_unit. This is filled in |
631 | while reading psymtabs, used to compute the psymtab dependencies, | |
632 | and then cleared. Then it is filled in again while reading full | |
633 | symbols, and only deleted when the objfile is destroyed. | |
634 | ||
635 | This is also used to work around a difference between the way gold | |
636 | generates .gdb_index version <=7 and the way gdb does. Arguably this | |
637 | is a gold bug. For symbols coming from TUs, gold records in the index | |
638 | the CU that includes the TU instead of the TU itself. This breaks | |
639 | dw2_lookup_symbol: It assumes that if the index says symbol X lives | |
640 | in CU/TU Y, then one need only expand Y and a subsequent lookup in Y | |
641 | will find X. Alas TUs live in their own symtab, so after expanding CU Y | |
642 | we need to look in TU Z to find X. Fortunately, this is akin to | |
643 | DW_TAG_imported_unit, so we just use the same mechanism: For | |
644 | .gdb_index version <=7 this also records the TUs that the CU referred | |
645 | to. Concurrently with this change gdb was modified to emit version 8 | |
69d751e3 DE |
646 | indices so we only pay a price for gold generated indices. |
647 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. */ | |
796a7ff8 | 648 | VEC (dwarf2_per_cu_ptr) *imported_symtabs; |
ae038cb0 DJ |
649 | }; |
650 | ||
348e048f DE |
651 | /* Entry in the signatured_types hash table. */ |
652 | ||
653 | struct signatured_type | |
654 | { | |
42e7ad6c | 655 | /* The "per_cu" object of this type. |
ac9ec31b | 656 | This struct is used iff per_cu.is_debug_types. |
42e7ad6c DE |
657 | N.B.: This is the first member so that it's easy to convert pointers |
658 | between them. */ | |
659 | struct dwarf2_per_cu_data per_cu; | |
660 | ||
3019eac3 | 661 | /* The type's signature. */ |
348e048f DE |
662 | ULONGEST signature; |
663 | ||
3019eac3 | 664 | /* Offset in the TU of the type's DIE, as read from the TU header. |
c88ee1f0 DE |
665 | If this TU is a DWO stub and the definition lives in a DWO file |
666 | (specified by DW_AT_GNU_dwo_name), this value is unusable. */ | |
3019eac3 DE |
667 | cu_offset type_offset_in_tu; |
668 | ||
669 | /* Offset in the section of the type's DIE. | |
670 | If the definition lives in a DWO file, this is the offset in the | |
671 | .debug_types.dwo section. | |
672 | The value is zero until the actual value is known. | |
673 | Zero is otherwise not a valid section offset. */ | |
674 | sect_offset type_offset_in_section; | |
0186c6a7 DE |
675 | |
676 | /* Type units are grouped by their DW_AT_stmt_list entry so that they | |
677 | can share them. This points to the containing symtab. */ | |
678 | struct type_unit_group *type_unit_group; | |
ac9ec31b DE |
679 | |
680 | /* The type. | |
681 | The first time we encounter this type we fully read it in and install it | |
682 | in the symbol tables. Subsequent times we only need the type. */ | |
683 | struct type *type; | |
a2ce51a0 DE |
684 | |
685 | /* Containing DWO unit. | |
686 | This field is valid iff per_cu.reading_dwo_directly. */ | |
687 | struct dwo_unit *dwo_unit; | |
348e048f DE |
688 | }; |
689 | ||
0186c6a7 DE |
690 | typedef struct signatured_type *sig_type_ptr; |
691 | DEF_VEC_P (sig_type_ptr); | |
692 | ||
094b34ac DE |
693 | /* A struct that can be used as a hash key for tables based on DW_AT_stmt_list. |
694 | This includes type_unit_group and quick_file_names. */ | |
695 | ||
696 | struct stmt_list_hash | |
697 | { | |
698 | /* The DWO unit this table is from or NULL if there is none. */ | |
699 | struct dwo_unit *dwo_unit; | |
700 | ||
701 | /* Offset in .debug_line or .debug_line.dwo. */ | |
702 | sect_offset line_offset; | |
703 | }; | |
704 | ||
f4dc4d17 DE |
705 | /* Each element of dwarf2_per_objfile->type_unit_groups is a pointer to |
706 | an object of this type. */ | |
707 | ||
708 | struct type_unit_group | |
709 | { | |
0186c6a7 | 710 | /* dwarf2read.c's main "handle" on a TU symtab. |
f4dc4d17 DE |
711 | To simplify things we create an artificial CU that "includes" all the |
712 | type units using this stmt_list so that the rest of the code still has | |
713 | a "per_cu" handle on the symtab. | |
714 | This PER_CU is recognized by having no section. */ | |
8a0459fd | 715 | #define IS_TYPE_UNIT_GROUP(per_cu) ((per_cu)->section == NULL) |
094b34ac DE |
716 | struct dwarf2_per_cu_data per_cu; |
717 | ||
0186c6a7 DE |
718 | /* The TUs that share this DW_AT_stmt_list entry. |
719 | This is added to while parsing type units to build partial symtabs, | |
720 | and is deleted afterwards and not used again. */ | |
721 | VEC (sig_type_ptr) *tus; | |
f4dc4d17 DE |
722 | |
723 | /* The primary symtab. | |
094b34ac DE |
724 | Type units in a group needn't all be defined in the same source file, |
725 | so we create an essentially anonymous symtab as the primary symtab. */ | |
f4dc4d17 DE |
726 | struct symtab *primary_symtab; |
727 | ||
094b34ac DE |
728 | /* The data used to construct the hash key. */ |
729 | struct stmt_list_hash hash; | |
f4dc4d17 DE |
730 | |
731 | /* The number of symtabs from the line header. | |
732 | The value here must match line_header.num_file_names. */ | |
733 | unsigned int num_symtabs; | |
734 | ||
735 | /* The symbol tables for this TU (obtained from the files listed in | |
736 | DW_AT_stmt_list). | |
737 | WARNING: The order of entries here must match the order of entries | |
738 | in the line header. After the first TU using this type_unit_group, the | |
739 | line header for the subsequent TUs is recreated from this. This is done | |
740 | because we need to use the same symtabs for each TU using the same | |
741 | DW_AT_stmt_list value. Also note that symtabs may be repeated here, | |
742 | there's no guarantee the line header doesn't have duplicate entries. */ | |
743 | struct symtab **symtabs; | |
744 | }; | |
745 | ||
73869dc2 | 746 | /* These sections are what may appear in a (real or virtual) DWO file. */ |
3019eac3 DE |
747 | |
748 | struct dwo_sections | |
749 | { | |
750 | struct dwarf2_section_info abbrev; | |
3019eac3 DE |
751 | struct dwarf2_section_info line; |
752 | struct dwarf2_section_info loc; | |
09262596 DE |
753 | struct dwarf2_section_info macinfo; |
754 | struct dwarf2_section_info macro; | |
3019eac3 DE |
755 | struct dwarf2_section_info str; |
756 | struct dwarf2_section_info str_offsets; | |
80626a55 DE |
757 | /* In the case of a virtual DWO file, these two are unused. */ |
758 | struct dwarf2_section_info info; | |
3019eac3 DE |
759 | VEC (dwarf2_section_info_def) *types; |
760 | }; | |
761 | ||
c88ee1f0 | 762 | /* CUs/TUs in DWP/DWO files. */ |
3019eac3 DE |
763 | |
764 | struct dwo_unit | |
765 | { | |
766 | /* Backlink to the containing struct dwo_file. */ | |
767 | struct dwo_file *dwo_file; | |
768 | ||
769 | /* The "id" that distinguishes this CU/TU. | |
770 | .debug_info calls this "dwo_id", .debug_types calls this "signature". | |
771 | Since signatures came first, we stick with it for consistency. */ | |
772 | ULONGEST signature; | |
773 | ||
774 | /* The section this CU/TU lives in, in the DWO file. */ | |
8a0459fd | 775 | struct dwarf2_section_info *section; |
3019eac3 | 776 | |
19ac8c2e | 777 | /* Same as dwarf2_per_cu_data:{offset,length} but in the DWO section. */ |
3019eac3 DE |
778 | sect_offset offset; |
779 | unsigned int length; | |
780 | ||
781 | /* For types, offset in the type's DIE of the type defined by this TU. */ | |
782 | cu_offset type_offset_in_tu; | |
783 | }; | |
784 | ||
73869dc2 DE |
785 | /* include/dwarf2.h defines the DWP section codes. |
786 | It defines a max value but it doesn't define a min value, which we | |
787 | use for error checking, so provide one. */ | |
788 | ||
789 | enum dwp_v2_section_ids | |
790 | { | |
791 | DW_SECT_MIN = 1 | |
792 | }; | |
793 | ||
80626a55 | 794 | /* Data for one DWO file. |
57d63ce2 DE |
795 | |
796 | This includes virtual DWO files (a virtual DWO file is a DWO file as it | |
797 | appears in a DWP file). DWP files don't really have DWO files per se - | |
798 | comdat folding of types "loses" the DWO file they came from, and from | |
799 | a high level view DWP files appear to contain a mass of random types. | |
800 | However, to maintain consistency with the non-DWP case we pretend DWP | |
801 | files contain virtual DWO files, and we assign each TU with one virtual | |
802 | DWO file (generally based on the line and abbrev section offsets - | |
803 | a heuristic that seems to work in practice). */ | |
3019eac3 DE |
804 | |
805 | struct dwo_file | |
806 | { | |
0ac5b59e | 807 | /* The DW_AT_GNU_dwo_name attribute. |
80626a55 DE |
808 | For virtual DWO files the name is constructed from the section offsets |
809 | of abbrev,line,loc,str_offsets so that we combine virtual DWO files | |
810 | from related CU+TUs. */ | |
0ac5b59e DE |
811 | const char *dwo_name; |
812 | ||
813 | /* The DW_AT_comp_dir attribute. */ | |
814 | const char *comp_dir; | |
3019eac3 | 815 | |
80626a55 DE |
816 | /* The bfd, when the file is open. Otherwise this is NULL. |
817 | This is unused(NULL) for virtual DWO files where we use dwp_file.dbfd. */ | |
818 | bfd *dbfd; | |
3019eac3 | 819 | |
73869dc2 DE |
820 | /* The sections that make up this DWO file. |
821 | Remember that for virtual DWO files in DWP V2, these are virtual | |
822 | sections (for lack of a better name). */ | |
3019eac3 DE |
823 | struct dwo_sections sections; |
824 | ||
19c3d4c9 DE |
825 | /* The CU in the file. |
826 | We only support one because having more than one requires hacking the | |
827 | dwo_name of each to match, which is highly unlikely to happen. | |
828 | Doing this means all TUs can share comp_dir: We also assume that | |
829 | DW_AT_comp_dir across all TUs in a DWO file will be identical. */ | |
830 | struct dwo_unit *cu; | |
3019eac3 DE |
831 | |
832 | /* Table of TUs in the file. | |
833 | Each element is a struct dwo_unit. */ | |
834 | htab_t tus; | |
835 | }; | |
836 | ||
80626a55 DE |
837 | /* These sections are what may appear in a DWP file. */ |
838 | ||
839 | struct dwp_sections | |
840 | { | |
73869dc2 | 841 | /* These are used by both DWP version 1 and 2. */ |
80626a55 DE |
842 | struct dwarf2_section_info str; |
843 | struct dwarf2_section_info cu_index; | |
844 | struct dwarf2_section_info tu_index; | |
73869dc2 DE |
845 | |
846 | /* These are only used by DWP version 2 files. | |
847 | In DWP version 1 the .debug_info.dwo, .debug_types.dwo, and other | |
848 | sections are referenced by section number, and are not recorded here. | |
849 | In DWP version 2 there is at most one copy of all these sections, each | |
850 | section being (effectively) comprised of the concatenation of all of the | |
851 | individual sections that exist in the version 1 format. | |
852 | To keep the code simple we treat each of these concatenated pieces as a | |
853 | section itself (a virtual section?). */ | |
854 | struct dwarf2_section_info abbrev; | |
855 | struct dwarf2_section_info info; | |
856 | struct dwarf2_section_info line; | |
857 | struct dwarf2_section_info loc; | |
858 | struct dwarf2_section_info macinfo; | |
859 | struct dwarf2_section_info macro; | |
860 | struct dwarf2_section_info str_offsets; | |
861 | struct dwarf2_section_info types; | |
80626a55 DE |
862 | }; |
863 | ||
73869dc2 DE |
864 | /* These sections are what may appear in a virtual DWO file in DWP version 1. |
865 | A virtual DWO file is a DWO file as it appears in a DWP file. */ | |
80626a55 | 866 | |
73869dc2 | 867 | struct virtual_v1_dwo_sections |
80626a55 DE |
868 | { |
869 | struct dwarf2_section_info abbrev; | |
870 | struct dwarf2_section_info line; | |
871 | struct dwarf2_section_info loc; | |
872 | struct dwarf2_section_info macinfo; | |
873 | struct dwarf2_section_info macro; | |
874 | struct dwarf2_section_info str_offsets; | |
875 | /* Each DWP hash table entry records one CU or one TU. | |
8a0459fd | 876 | That is recorded here, and copied to dwo_unit.section. */ |
80626a55 DE |
877 | struct dwarf2_section_info info_or_types; |
878 | }; | |
879 | ||
73869dc2 DE |
880 | /* Similar to virtual_v1_dwo_sections, but for DWP version 2. |
881 | In version 2, the sections of the DWO files are concatenated together | |
882 | and stored in one section of that name. Thus each ELF section contains | |
883 | several "virtual" sections. */ | |
884 | ||
885 | struct virtual_v2_dwo_sections | |
886 | { | |
887 | bfd_size_type abbrev_offset; | |
888 | bfd_size_type abbrev_size; | |
889 | ||
890 | bfd_size_type line_offset; | |
891 | bfd_size_type line_size; | |
892 | ||
893 | bfd_size_type loc_offset; | |
894 | bfd_size_type loc_size; | |
895 | ||
896 | bfd_size_type macinfo_offset; | |
897 | bfd_size_type macinfo_size; | |
898 | ||
899 | bfd_size_type macro_offset; | |
900 | bfd_size_type macro_size; | |
901 | ||
902 | bfd_size_type str_offsets_offset; | |
903 | bfd_size_type str_offsets_size; | |
904 | ||
905 | /* Each DWP hash table entry records one CU or one TU. | |
906 | That is recorded here, and copied to dwo_unit.section. */ | |
907 | bfd_size_type info_or_types_offset; | |
908 | bfd_size_type info_or_types_size; | |
909 | }; | |
910 | ||
80626a55 DE |
911 | /* Contents of DWP hash tables. */ |
912 | ||
913 | struct dwp_hash_table | |
914 | { | |
73869dc2 | 915 | uint32_t version, nr_columns; |
80626a55 | 916 | uint32_t nr_units, nr_slots; |
73869dc2 DE |
917 | const gdb_byte *hash_table, *unit_table; |
918 | union | |
919 | { | |
920 | struct | |
921 | { | |
922 | const gdb_byte *indices; | |
923 | } v1; | |
924 | struct | |
925 | { | |
926 | /* This is indexed by column number and gives the id of the section | |
927 | in that column. */ | |
928 | #define MAX_NR_V2_DWO_SECTIONS \ | |
929 | (1 /* .debug_info or .debug_types */ \ | |
930 | + 1 /* .debug_abbrev */ \ | |
931 | + 1 /* .debug_line */ \ | |
932 | + 1 /* .debug_loc */ \ | |
933 | + 1 /* .debug_str_offsets */ \ | |
934 | + 1 /* .debug_macro or .debug_macinfo */) | |
935 | int section_ids[MAX_NR_V2_DWO_SECTIONS]; | |
936 | const gdb_byte *offsets; | |
937 | const gdb_byte *sizes; | |
938 | } v2; | |
939 | } section_pool; | |
80626a55 DE |
940 | }; |
941 | ||
942 | /* Data for one DWP file. */ | |
943 | ||
944 | struct dwp_file | |
945 | { | |
946 | /* Name of the file. */ | |
947 | const char *name; | |
948 | ||
73869dc2 DE |
949 | /* File format version. */ |
950 | int version; | |
951 | ||
93417882 | 952 | /* The bfd. */ |
80626a55 DE |
953 | bfd *dbfd; |
954 | ||
955 | /* Section info for this file. */ | |
956 | struct dwp_sections sections; | |
957 | ||
57d63ce2 | 958 | /* Table of CUs in the file. */ |
80626a55 DE |
959 | const struct dwp_hash_table *cus; |
960 | ||
961 | /* Table of TUs in the file. */ | |
962 | const struct dwp_hash_table *tus; | |
963 | ||
19ac8c2e DE |
964 | /* Tables of loaded CUs/TUs. Each entry is a struct dwo_unit *. */ |
965 | htab_t loaded_cus; | |
966 | htab_t loaded_tus; | |
80626a55 | 967 | |
73869dc2 DE |
968 | /* Table to map ELF section numbers to their sections. |
969 | This is only needed for the DWP V1 file format. */ | |
80626a55 DE |
970 | unsigned int num_sections; |
971 | asection **elf_sections; | |
972 | }; | |
973 | ||
36586728 TT |
974 | /* This represents a '.dwz' file. */ |
975 | ||
976 | struct dwz_file | |
977 | { | |
978 | /* A dwz file can only contain a few sections. */ | |
979 | struct dwarf2_section_info abbrev; | |
980 | struct dwarf2_section_info info; | |
981 | struct dwarf2_section_info str; | |
982 | struct dwarf2_section_info line; | |
983 | struct dwarf2_section_info macro; | |
2ec9a5e0 | 984 | struct dwarf2_section_info gdb_index; |
36586728 TT |
985 | |
986 | /* The dwz's BFD. */ | |
987 | bfd *dwz_bfd; | |
988 | }; | |
989 | ||
0963b4bd MS |
990 | /* Struct used to pass misc. parameters to read_die_and_children, et |
991 | al. which are used for both .debug_info and .debug_types dies. | |
992 | All parameters here are unchanging for the life of the call. This | |
dee91e82 | 993 | struct exists to abstract away the constant parameters of die reading. */ |
93311388 DE |
994 | |
995 | struct die_reader_specs | |
996 | { | |
a32a8923 | 997 | /* The bfd of die_section. */ |
93311388 DE |
998 | bfd* abfd; |
999 | ||
1000 | /* The CU of the DIE we are parsing. */ | |
1001 | struct dwarf2_cu *cu; | |
1002 | ||
80626a55 | 1003 | /* Non-NULL if reading a DWO file (including one packaged into a DWP). */ |
3019eac3 DE |
1004 | struct dwo_file *dwo_file; |
1005 | ||
dee91e82 | 1006 | /* The section the die comes from. |
3019eac3 | 1007 | This is either .debug_info or .debug_types, or the .dwo variants. */ |
dee91e82 DE |
1008 | struct dwarf2_section_info *die_section; |
1009 | ||
1010 | /* die_section->buffer. */ | |
d521ce57 | 1011 | const gdb_byte *buffer; |
f664829e DE |
1012 | |
1013 | /* The end of the buffer. */ | |
1014 | const gdb_byte *buffer_end; | |
a2ce51a0 DE |
1015 | |
1016 | /* The value of the DW_AT_comp_dir attribute. */ | |
1017 | const char *comp_dir; | |
93311388 DE |
1018 | }; |
1019 | ||
fd820528 | 1020 | /* Type of function passed to init_cutu_and_read_dies, et.al. */ |
dee91e82 | 1021 | typedef void (die_reader_func_ftype) (const struct die_reader_specs *reader, |
d521ce57 | 1022 | const gdb_byte *info_ptr, |
dee91e82 DE |
1023 | struct die_info *comp_unit_die, |
1024 | int has_children, | |
1025 | void *data); | |
1026 | ||
debd256d JB |
1027 | /* The line number information for a compilation unit (found in the |
1028 | .debug_line section) begins with a "statement program header", | |
1029 | which contains the following information. */ | |
1030 | struct line_header | |
1031 | { | |
1032 | unsigned int total_length; | |
1033 | unsigned short version; | |
1034 | unsigned int header_length; | |
1035 | unsigned char minimum_instruction_length; | |
2dc7f7b3 | 1036 | unsigned char maximum_ops_per_instruction; |
debd256d JB |
1037 | unsigned char default_is_stmt; |
1038 | int line_base; | |
1039 | unsigned char line_range; | |
1040 | unsigned char opcode_base; | |
1041 | ||
1042 | /* standard_opcode_lengths[i] is the number of operands for the | |
1043 | standard opcode whose value is i. This means that | |
1044 | standard_opcode_lengths[0] is unused, and the last meaningful | |
1045 | element is standard_opcode_lengths[opcode_base - 1]. */ | |
1046 | unsigned char *standard_opcode_lengths; | |
1047 | ||
1048 | /* The include_directories table. NOTE! These strings are not | |
1049 | allocated with xmalloc; instead, they are pointers into | |
1050 | debug_line_buffer. If you try to free them, `free' will get | |
1051 | indigestion. */ | |
1052 | unsigned int num_include_dirs, include_dirs_size; | |
d521ce57 | 1053 | const char **include_dirs; |
debd256d JB |
1054 | |
1055 | /* The file_names table. NOTE! These strings are not allocated | |
1056 | with xmalloc; instead, they are pointers into debug_line_buffer. | |
1057 | Don't try to free them directly. */ | |
1058 | unsigned int num_file_names, file_names_size; | |
1059 | struct file_entry | |
c906108c | 1060 | { |
d521ce57 | 1061 | const char *name; |
debd256d JB |
1062 | unsigned int dir_index; |
1063 | unsigned int mod_time; | |
1064 | unsigned int length; | |
aaa75496 | 1065 | int included_p; /* Non-zero if referenced by the Line Number Program. */ |
cb1df416 | 1066 | struct symtab *symtab; /* The associated symbol table, if any. */ |
debd256d JB |
1067 | } *file_names; |
1068 | ||
1069 | /* The start and end of the statement program following this | |
6502dd73 | 1070 | header. These point into dwarf2_per_objfile->line_buffer. */ |
d521ce57 | 1071 | const gdb_byte *statement_program_start, *statement_program_end; |
debd256d | 1072 | }; |
c906108c SS |
1073 | |
1074 | /* When we construct a partial symbol table entry we only | |
0963b4bd | 1075 | need this much information. */ |
c906108c SS |
1076 | struct partial_die_info |
1077 | { | |
72bf9492 | 1078 | /* Offset of this DIE. */ |
b64f50a1 | 1079 | sect_offset offset; |
72bf9492 DJ |
1080 | |
1081 | /* DWARF-2 tag for this DIE. */ | |
1082 | ENUM_BITFIELD(dwarf_tag) tag : 16; | |
1083 | ||
72bf9492 DJ |
1084 | /* Assorted flags describing the data found in this DIE. */ |
1085 | unsigned int has_children : 1; | |
1086 | unsigned int is_external : 1; | |
1087 | unsigned int is_declaration : 1; | |
1088 | unsigned int has_type : 1; | |
1089 | unsigned int has_specification : 1; | |
1090 | unsigned int has_pc_info : 1; | |
481860b3 | 1091 | unsigned int may_be_inlined : 1; |
72bf9492 DJ |
1092 | |
1093 | /* Flag set if the SCOPE field of this structure has been | |
1094 | computed. */ | |
1095 | unsigned int scope_set : 1; | |
1096 | ||
fa4028e9 JB |
1097 | /* Flag set if the DIE has a byte_size attribute. */ |
1098 | unsigned int has_byte_size : 1; | |
1099 | ||
98bfdba5 PA |
1100 | /* Flag set if any of the DIE's children are template arguments. */ |
1101 | unsigned int has_template_arguments : 1; | |
1102 | ||
abc72ce4 DE |
1103 | /* Flag set if fixup_partial_die has been called on this die. */ |
1104 | unsigned int fixup_called : 1; | |
1105 | ||
36586728 TT |
1106 | /* Flag set if DW_TAG_imported_unit uses DW_FORM_GNU_ref_alt. */ |
1107 | unsigned int is_dwz : 1; | |
1108 | ||
1109 | /* Flag set if spec_offset uses DW_FORM_GNU_ref_alt. */ | |
1110 | unsigned int spec_is_dwz : 1; | |
1111 | ||
72bf9492 | 1112 | /* The name of this DIE. Normally the value of DW_AT_name, but |
94af9270 | 1113 | sometimes a default name for unnamed DIEs. */ |
15d034d0 | 1114 | const char *name; |
72bf9492 | 1115 | |
abc72ce4 DE |
1116 | /* The linkage name, if present. */ |
1117 | const char *linkage_name; | |
1118 | ||
72bf9492 DJ |
1119 | /* The scope to prepend to our children. This is generally |
1120 | allocated on the comp_unit_obstack, so will disappear | |
1121 | when this compilation unit leaves the cache. */ | |
15d034d0 | 1122 | const char *scope; |
72bf9492 | 1123 | |
95554aad TT |
1124 | /* Some data associated with the partial DIE. The tag determines |
1125 | which field is live. */ | |
1126 | union | |
1127 | { | |
1128 | /* The location description associated with this DIE, if any. */ | |
1129 | struct dwarf_block *locdesc; | |
1130 | /* The offset of an import, for DW_TAG_imported_unit. */ | |
1131 | sect_offset offset; | |
1132 | } d; | |
72bf9492 DJ |
1133 | |
1134 | /* If HAS_PC_INFO, the PC range associated with this DIE. */ | |
c906108c SS |
1135 | CORE_ADDR lowpc; |
1136 | CORE_ADDR highpc; | |
72bf9492 | 1137 | |
93311388 | 1138 | /* Pointer into the info_buffer (or types_buffer) pointing at the target of |
72bf9492 | 1139 | DW_AT_sibling, if any. */ |
abc72ce4 DE |
1140 | /* NOTE: This member isn't strictly necessary, read_partial_die could |
1141 | return DW_AT_sibling values to its caller load_partial_dies. */ | |
d521ce57 | 1142 | const gdb_byte *sibling; |
72bf9492 DJ |
1143 | |
1144 | /* If HAS_SPECIFICATION, the offset of the DIE referred to by | |
1145 | DW_AT_specification (or DW_AT_abstract_origin or | |
1146 | DW_AT_extension). */ | |
b64f50a1 | 1147 | sect_offset spec_offset; |
72bf9492 DJ |
1148 | |
1149 | /* Pointers to this DIE's parent, first child, and next sibling, | |
1150 | if any. */ | |
1151 | struct partial_die_info *die_parent, *die_child, *die_sibling; | |
c906108c SS |
1152 | }; |
1153 | ||
0963b4bd | 1154 | /* This data structure holds the information of an abbrev. */ |
c906108c SS |
1155 | struct abbrev_info |
1156 | { | |
1157 | unsigned int number; /* number identifying abbrev */ | |
1158 | enum dwarf_tag tag; /* dwarf tag */ | |
f3dd6933 DJ |
1159 | unsigned short has_children; /* boolean */ |
1160 | unsigned short num_attrs; /* number of attributes */ | |
c906108c SS |
1161 | struct attr_abbrev *attrs; /* an array of attribute descriptions */ |
1162 | struct abbrev_info *next; /* next in chain */ | |
1163 | }; | |
1164 | ||
1165 | struct attr_abbrev | |
1166 | { | |
9d25dd43 DE |
1167 | ENUM_BITFIELD(dwarf_attribute) name : 16; |
1168 | ENUM_BITFIELD(dwarf_form) form : 16; | |
c906108c SS |
1169 | }; |
1170 | ||
433df2d4 DE |
1171 | /* Size of abbrev_table.abbrev_hash_table. */ |
1172 | #define ABBREV_HASH_SIZE 121 | |
1173 | ||
1174 | /* Top level data structure to contain an abbreviation table. */ | |
1175 | ||
1176 | struct abbrev_table | |
1177 | { | |
f4dc4d17 DE |
1178 | /* Where the abbrev table came from. |
1179 | This is used as a sanity check when the table is used. */ | |
433df2d4 DE |
1180 | sect_offset offset; |
1181 | ||
1182 | /* Storage for the abbrev table. */ | |
1183 | struct obstack abbrev_obstack; | |
1184 | ||
1185 | /* Hash table of abbrevs. | |
1186 | This is an array of size ABBREV_HASH_SIZE allocated in abbrev_obstack. | |
1187 | It could be statically allocated, but the previous code didn't so we | |
1188 | don't either. */ | |
1189 | struct abbrev_info **abbrevs; | |
1190 | }; | |
1191 | ||
0963b4bd | 1192 | /* Attributes have a name and a value. */ |
b60c80d6 DJ |
1193 | struct attribute |
1194 | { | |
9d25dd43 | 1195 | ENUM_BITFIELD(dwarf_attribute) name : 16; |
8285870a JK |
1196 | ENUM_BITFIELD(dwarf_form) form : 15; |
1197 | ||
1198 | /* Has DW_STRING already been updated by dwarf2_canonicalize_name? This | |
1199 | field should be in u.str (existing only for DW_STRING) but it is kept | |
1200 | here for better struct attribute alignment. */ | |
1201 | unsigned int string_is_canonical : 1; | |
1202 | ||
b60c80d6 DJ |
1203 | union |
1204 | { | |
15d034d0 | 1205 | const char *str; |
b60c80d6 | 1206 | struct dwarf_block *blk; |
43bbcdc2 PH |
1207 | ULONGEST unsnd; |
1208 | LONGEST snd; | |
b60c80d6 | 1209 | CORE_ADDR addr; |
ac9ec31b | 1210 | ULONGEST signature; |
b60c80d6 DJ |
1211 | } |
1212 | u; | |
1213 | }; | |
1214 | ||
0963b4bd | 1215 | /* This data structure holds a complete die structure. */ |
c906108c SS |
1216 | struct die_info |
1217 | { | |
76815b17 DE |
1218 | /* DWARF-2 tag for this DIE. */ |
1219 | ENUM_BITFIELD(dwarf_tag) tag : 16; | |
1220 | ||
1221 | /* Number of attributes */ | |
98bfdba5 PA |
1222 | unsigned char num_attrs; |
1223 | ||
1224 | /* True if we're presently building the full type name for the | |
1225 | type derived from this DIE. */ | |
1226 | unsigned char building_fullname : 1; | |
76815b17 DE |
1227 | |
1228 | /* Abbrev number */ | |
1229 | unsigned int abbrev; | |
1230 | ||
93311388 | 1231 | /* Offset in .debug_info or .debug_types section. */ |
b64f50a1 | 1232 | sect_offset offset; |
78ba4af6 JB |
1233 | |
1234 | /* The dies in a compilation unit form an n-ary tree. PARENT | |
1235 | points to this die's parent; CHILD points to the first child of | |
1236 | this node; and all the children of a given node are chained | |
4950bc1c | 1237 | together via their SIBLING fields. */ |
639d11d3 DC |
1238 | struct die_info *child; /* Its first child, if any. */ |
1239 | struct die_info *sibling; /* Its next sibling, if any. */ | |
1240 | struct die_info *parent; /* Its parent, if any. */ | |
c906108c | 1241 | |
b60c80d6 DJ |
1242 | /* An array of attributes, with NUM_ATTRS elements. There may be |
1243 | zero, but it's not common and zero-sized arrays are not | |
1244 | sufficiently portable C. */ | |
1245 | struct attribute attrs[1]; | |
c906108c SS |
1246 | }; |
1247 | ||
0963b4bd | 1248 | /* Get at parts of an attribute structure. */ |
c906108c SS |
1249 | |
1250 | #define DW_STRING(attr) ((attr)->u.str) | |
8285870a | 1251 | #define DW_STRING_IS_CANONICAL(attr) ((attr)->string_is_canonical) |
c906108c SS |
1252 | #define DW_UNSND(attr) ((attr)->u.unsnd) |
1253 | #define DW_BLOCK(attr) ((attr)->u.blk) | |
1254 | #define DW_SND(attr) ((attr)->u.snd) | |
1255 | #define DW_ADDR(attr) ((attr)->u.addr) | |
ac9ec31b | 1256 | #define DW_SIGNATURE(attr) ((attr)->u.signature) |
c906108c | 1257 | |
0963b4bd | 1258 | /* Blocks are a bunch of untyped bytes. */ |
c906108c SS |
1259 | struct dwarf_block |
1260 | { | |
56eb65bd | 1261 | size_t size; |
1d6edc3c JK |
1262 | |
1263 | /* Valid only if SIZE is not zero. */ | |
d521ce57 | 1264 | const gdb_byte *data; |
c906108c SS |
1265 | }; |
1266 | ||
c906108c SS |
1267 | #ifndef ATTR_ALLOC_CHUNK |
1268 | #define ATTR_ALLOC_CHUNK 4 | |
1269 | #endif | |
1270 | ||
c906108c SS |
1271 | /* Allocate fields for structs, unions and enums in this size. */ |
1272 | #ifndef DW_FIELD_ALLOC_CHUNK | |
1273 | #define DW_FIELD_ALLOC_CHUNK 4 | |
1274 | #endif | |
1275 | ||
c906108c SS |
1276 | /* FIXME: We might want to set this from BFD via bfd_arch_bits_per_byte, |
1277 | but this would require a corresponding change in unpack_field_as_long | |
1278 | and friends. */ | |
1279 | static int bits_per_byte = 8; | |
1280 | ||
1281 | /* The routines that read and process dies for a C struct or C++ class | |
1282 | pass lists of data member fields and lists of member function fields | |
1283 | in an instance of a field_info structure, as defined below. */ | |
1284 | struct field_info | |
c5aa993b | 1285 | { |
0963b4bd | 1286 | /* List of data member and baseclasses fields. */ |
c5aa993b JM |
1287 | struct nextfield |
1288 | { | |
1289 | struct nextfield *next; | |
1290 | int accessibility; | |
1291 | int virtuality; | |
1292 | struct field field; | |
1293 | } | |
7d0ccb61 | 1294 | *fields, *baseclasses; |
c906108c | 1295 | |
7d0ccb61 | 1296 | /* Number of fields (including baseclasses). */ |
c5aa993b | 1297 | int nfields; |
c906108c | 1298 | |
c5aa993b JM |
1299 | /* Number of baseclasses. */ |
1300 | int nbaseclasses; | |
c906108c | 1301 | |
c5aa993b JM |
1302 | /* Set if the accesibility of one of the fields is not public. */ |
1303 | int non_public_fields; | |
c906108c | 1304 | |
c5aa993b JM |
1305 | /* Member function fields array, entries are allocated in the order they |
1306 | are encountered in the object file. */ | |
1307 | struct nextfnfield | |
1308 | { | |
1309 | struct nextfnfield *next; | |
1310 | struct fn_field fnfield; | |
1311 | } | |
1312 | *fnfields; | |
c906108c | 1313 | |
c5aa993b JM |
1314 | /* Member function fieldlist array, contains name of possibly overloaded |
1315 | member function, number of overloaded member functions and a pointer | |
1316 | to the head of the member function field chain. */ | |
1317 | struct fnfieldlist | |
1318 | { | |
15d034d0 | 1319 | const char *name; |
c5aa993b JM |
1320 | int length; |
1321 | struct nextfnfield *head; | |
1322 | } | |
1323 | *fnfieldlists; | |
c906108c | 1324 | |
c5aa993b JM |
1325 | /* Number of entries in the fnfieldlists array. */ |
1326 | int nfnfields; | |
98751a41 JK |
1327 | |
1328 | /* typedefs defined inside this class. TYPEDEF_FIELD_LIST contains head of | |
1329 | a NULL terminated list of TYPEDEF_FIELD_LIST_COUNT elements. */ | |
1330 | struct typedef_field_list | |
1331 | { | |
1332 | struct typedef_field field; | |
1333 | struct typedef_field_list *next; | |
1334 | } | |
1335 | *typedef_field_list; | |
1336 | unsigned typedef_field_list_count; | |
c5aa993b | 1337 | }; |
c906108c | 1338 | |
10b3939b DJ |
1339 | /* One item on the queue of compilation units to read in full symbols |
1340 | for. */ | |
1341 | struct dwarf2_queue_item | |
1342 | { | |
1343 | struct dwarf2_per_cu_data *per_cu; | |
95554aad | 1344 | enum language pretend_language; |
10b3939b DJ |
1345 | struct dwarf2_queue_item *next; |
1346 | }; | |
1347 | ||
1348 | /* The current queue. */ | |
1349 | static struct dwarf2_queue_item *dwarf2_queue, *dwarf2_queue_tail; | |
1350 | ||
ae038cb0 DJ |
1351 | /* Loaded secondary compilation units are kept in memory until they |
1352 | have not been referenced for the processing of this many | |
1353 | compilation units. Set this to zero to disable caching. Cache | |
1354 | sizes of up to at least twenty will improve startup time for | |
1355 | typical inter-CU-reference binaries, at an obvious memory cost. */ | |
1356 | static int dwarf2_max_cache_age = 5; | |
920d2a44 AC |
1357 | static void |
1358 | show_dwarf2_max_cache_age (struct ui_file *file, int from_tty, | |
1359 | struct cmd_list_element *c, const char *value) | |
1360 | { | |
3e43a32a MS |
1361 | fprintf_filtered (file, _("The upper bound on the age of cached " |
1362 | "dwarf2 compilation units is %s.\n"), | |
920d2a44 AC |
1363 | value); |
1364 | } | |
4390d890 | 1365 | \f |
c906108c SS |
1366 | /* local function prototypes */ |
1367 | ||
a32a8923 DE |
1368 | static const char *get_section_name (const struct dwarf2_section_info *); |
1369 | ||
1370 | static const char *get_section_file_name (const struct dwarf2_section_info *); | |
1371 | ||
4efb68b1 | 1372 | static void dwarf2_locate_sections (bfd *, asection *, void *); |
c906108c | 1373 | |
918dd910 JK |
1374 | static void dwarf2_find_base_address (struct die_info *die, |
1375 | struct dwarf2_cu *cu); | |
1376 | ||
0018ea6f DE |
1377 | static struct partial_symtab *create_partial_symtab |
1378 | (struct dwarf2_per_cu_data *per_cu, const char *name); | |
1379 | ||
c67a9c90 | 1380 | static void dwarf2_build_psymtabs_hard (struct objfile *); |
c906108c | 1381 | |
72bf9492 DJ |
1382 | static void scan_partial_symbols (struct partial_die_info *, |
1383 | CORE_ADDR *, CORE_ADDR *, | |
5734ee8b | 1384 | int, struct dwarf2_cu *); |
c906108c | 1385 | |
72bf9492 DJ |
1386 | static void add_partial_symbol (struct partial_die_info *, |
1387 | struct dwarf2_cu *); | |
63d06c5c | 1388 | |
72bf9492 DJ |
1389 | static void add_partial_namespace (struct partial_die_info *pdi, |
1390 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 1391 | int need_pc, struct dwarf2_cu *cu); |
63d06c5c | 1392 | |
5d7cb8df JK |
1393 | static void add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, |
1394 | CORE_ADDR *highpc, int need_pc, | |
1395 | struct dwarf2_cu *cu); | |
1396 | ||
72bf9492 DJ |
1397 | static void add_partial_enumeration (struct partial_die_info *enum_pdi, |
1398 | struct dwarf2_cu *cu); | |
91c24f0a | 1399 | |
bc30ff58 JB |
1400 | static void add_partial_subprogram (struct partial_die_info *pdi, |
1401 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 1402 | int need_pc, struct dwarf2_cu *cu); |
bc30ff58 | 1403 | |
257e7a09 YQ |
1404 | static void dwarf2_read_symtab (struct partial_symtab *, |
1405 | struct objfile *); | |
c906108c | 1406 | |
a14ed312 | 1407 | static void psymtab_to_symtab_1 (struct partial_symtab *); |
c906108c | 1408 | |
433df2d4 DE |
1409 | static struct abbrev_info *abbrev_table_lookup_abbrev |
1410 | (const struct abbrev_table *, unsigned int); | |
1411 | ||
1412 | static struct abbrev_table *abbrev_table_read_table | |
1413 | (struct dwarf2_section_info *, sect_offset); | |
1414 | ||
1415 | static void abbrev_table_free (struct abbrev_table *); | |
1416 | ||
f4dc4d17 DE |
1417 | static void abbrev_table_free_cleanup (void *); |
1418 | ||
dee91e82 DE |
1419 | static void dwarf2_read_abbrevs (struct dwarf2_cu *, |
1420 | struct dwarf2_section_info *); | |
c906108c | 1421 | |
f3dd6933 | 1422 | static void dwarf2_free_abbrev_table (void *); |
c906108c | 1423 | |
d521ce57 | 1424 | static unsigned int peek_abbrev_code (bfd *, const gdb_byte *); |
6caca83c | 1425 | |
dee91e82 | 1426 | static struct partial_die_info *load_partial_dies |
d521ce57 | 1427 | (const struct die_reader_specs *, const gdb_byte *, int); |
72bf9492 | 1428 | |
d521ce57 TT |
1429 | static const gdb_byte *read_partial_die (const struct die_reader_specs *, |
1430 | struct partial_die_info *, | |
1431 | struct abbrev_info *, | |
1432 | unsigned int, | |
1433 | const gdb_byte *); | |
c906108c | 1434 | |
36586728 | 1435 | static struct partial_die_info *find_partial_die (sect_offset, int, |
10b3939b | 1436 | struct dwarf2_cu *); |
72bf9492 DJ |
1437 | |
1438 | static void fixup_partial_die (struct partial_die_info *, | |
1439 | struct dwarf2_cu *); | |
1440 | ||
d521ce57 TT |
1441 | static const gdb_byte *read_attribute (const struct die_reader_specs *, |
1442 | struct attribute *, struct attr_abbrev *, | |
1443 | const gdb_byte *); | |
a8329558 | 1444 | |
a1855c1d | 1445 | static unsigned int read_1_byte (bfd *, const gdb_byte *); |
c906108c | 1446 | |
a1855c1d | 1447 | static int read_1_signed_byte (bfd *, const gdb_byte *); |
c906108c | 1448 | |
a1855c1d | 1449 | static unsigned int read_2_bytes (bfd *, const gdb_byte *); |
c906108c | 1450 | |
a1855c1d | 1451 | static unsigned int read_4_bytes (bfd *, const gdb_byte *); |
c906108c | 1452 | |
a1855c1d | 1453 | static ULONGEST read_8_bytes (bfd *, const gdb_byte *); |
c906108c | 1454 | |
d521ce57 | 1455 | static CORE_ADDR read_address (bfd *, const gdb_byte *ptr, struct dwarf2_cu *, |
891d2f0b | 1456 | unsigned int *); |
c906108c | 1457 | |
d521ce57 | 1458 | static LONGEST read_initial_length (bfd *, const gdb_byte *, unsigned int *); |
c764a876 DE |
1459 | |
1460 | static LONGEST read_checked_initial_length_and_offset | |
d521ce57 | 1461 | (bfd *, const gdb_byte *, const struct comp_unit_head *, |
c764a876 | 1462 | unsigned int *, unsigned int *); |
613e1657 | 1463 | |
d521ce57 TT |
1464 | static LONGEST read_offset (bfd *, const gdb_byte *, |
1465 | const struct comp_unit_head *, | |
c764a876 DE |
1466 | unsigned int *); |
1467 | ||
d521ce57 | 1468 | static LONGEST read_offset_1 (bfd *, const gdb_byte *, unsigned int); |
613e1657 | 1469 | |
f4dc4d17 DE |
1470 | static sect_offset read_abbrev_offset (struct dwarf2_section_info *, |
1471 | sect_offset); | |
1472 | ||
d521ce57 | 1473 | static const gdb_byte *read_n_bytes (bfd *, const gdb_byte *, unsigned int); |
c906108c | 1474 | |
d521ce57 | 1475 | static const char *read_direct_string (bfd *, const gdb_byte *, unsigned int *); |
c906108c | 1476 | |
d521ce57 TT |
1477 | static const char *read_indirect_string (bfd *, const gdb_byte *, |
1478 | const struct comp_unit_head *, | |
1479 | unsigned int *); | |
4bdf3d34 | 1480 | |
d521ce57 | 1481 | static const char *read_indirect_string_from_dwz (struct dwz_file *, LONGEST); |
36586728 | 1482 | |
d521ce57 | 1483 | static ULONGEST read_unsigned_leb128 (bfd *, const gdb_byte *, unsigned int *); |
c906108c | 1484 | |
d521ce57 | 1485 | static LONGEST read_signed_leb128 (bfd *, const gdb_byte *, unsigned int *); |
c906108c | 1486 | |
d521ce57 TT |
1487 | static CORE_ADDR read_addr_index_from_leb128 (struct dwarf2_cu *, |
1488 | const gdb_byte *, | |
3019eac3 DE |
1489 | unsigned int *); |
1490 | ||
d521ce57 TT |
1491 | static const char *read_str_index (const struct die_reader_specs *reader, |
1492 | struct dwarf2_cu *cu, ULONGEST str_index); | |
3019eac3 | 1493 | |
e142c38c | 1494 | static void set_cu_language (unsigned int, struct dwarf2_cu *); |
c906108c | 1495 | |
e142c38c DJ |
1496 | static struct attribute *dwarf2_attr (struct die_info *, unsigned int, |
1497 | struct dwarf2_cu *); | |
c906108c | 1498 | |
348e048f | 1499 | static struct attribute *dwarf2_attr_no_follow (struct die_info *, |
45e58e77 | 1500 | unsigned int); |
348e048f | 1501 | |
05cf31d1 JB |
1502 | static int dwarf2_flag_true_p (struct die_info *die, unsigned name, |
1503 | struct dwarf2_cu *cu); | |
1504 | ||
e142c38c | 1505 | static int die_is_declaration (struct die_info *, struct dwarf2_cu *cu); |
3ca72b44 | 1506 | |
e142c38c | 1507 | static struct die_info *die_specification (struct die_info *die, |
f2f0e013 | 1508 | struct dwarf2_cu **); |
63d06c5c | 1509 | |
debd256d JB |
1510 | static void free_line_header (struct line_header *lh); |
1511 | ||
3019eac3 DE |
1512 | static struct line_header *dwarf_decode_line_header (unsigned int offset, |
1513 | struct dwarf2_cu *cu); | |
debd256d | 1514 | |
f3f5162e DE |
1515 | static void dwarf_decode_lines (struct line_header *, const char *, |
1516 | struct dwarf2_cu *, struct partial_symtab *, | |
1517 | int); | |
c906108c | 1518 | |
d521ce57 | 1519 | static void dwarf2_start_subfile (const char *, const char *, const char *); |
c906108c | 1520 | |
f4dc4d17 | 1521 | static void dwarf2_start_symtab (struct dwarf2_cu *, |
15d034d0 | 1522 | const char *, const char *, CORE_ADDR); |
f4dc4d17 | 1523 | |
a14ed312 | 1524 | static struct symbol *new_symbol (struct die_info *, struct type *, |
e7c27a73 | 1525 | struct dwarf2_cu *); |
c906108c | 1526 | |
34eaf542 TT |
1527 | static struct symbol *new_symbol_full (struct die_info *, struct type *, |
1528 | struct dwarf2_cu *, struct symbol *); | |
1529 | ||
ff39bb5e | 1530 | static void dwarf2_const_value (const struct attribute *, struct symbol *, |
e7c27a73 | 1531 | struct dwarf2_cu *); |
c906108c | 1532 | |
ff39bb5e | 1533 | static void dwarf2_const_value_attr (const struct attribute *attr, |
98bfdba5 PA |
1534 | struct type *type, |
1535 | const char *name, | |
1536 | struct obstack *obstack, | |
12df843f | 1537 | struct dwarf2_cu *cu, LONGEST *value, |
d521ce57 | 1538 | const gdb_byte **bytes, |
98bfdba5 | 1539 | struct dwarf2_locexpr_baton **baton); |
2df3850c | 1540 | |
e7c27a73 | 1541 | static struct type *die_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 1542 | |
b4ba55a1 JB |
1543 | static int need_gnat_info (struct dwarf2_cu *); |
1544 | ||
3e43a32a MS |
1545 | static struct type *die_descriptive_type (struct die_info *, |
1546 | struct dwarf2_cu *); | |
b4ba55a1 JB |
1547 | |
1548 | static void set_descriptive_type (struct type *, struct die_info *, | |
1549 | struct dwarf2_cu *); | |
1550 | ||
e7c27a73 DJ |
1551 | static struct type *die_containing_type (struct die_info *, |
1552 | struct dwarf2_cu *); | |
c906108c | 1553 | |
ff39bb5e | 1554 | static struct type *lookup_die_type (struct die_info *, const struct attribute *, |
673bfd45 | 1555 | struct dwarf2_cu *); |
c906108c | 1556 | |
f792889a | 1557 | static struct type *read_type_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1558 | |
673bfd45 DE |
1559 | static struct type *read_type_die_1 (struct die_info *, struct dwarf2_cu *); |
1560 | ||
0d5cff50 | 1561 | static const char *determine_prefix (struct die_info *die, struct dwarf2_cu *); |
63d06c5c | 1562 | |
6e70227d | 1563 | static char *typename_concat (struct obstack *obs, const char *prefix, |
f55ee35c JK |
1564 | const char *suffix, int physname, |
1565 | struct dwarf2_cu *cu); | |
63d06c5c | 1566 | |
e7c27a73 | 1567 | static void read_file_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1568 | |
348e048f DE |
1569 | static void read_type_unit_scope (struct die_info *, struct dwarf2_cu *); |
1570 | ||
e7c27a73 | 1571 | static void read_func_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1572 | |
e7c27a73 | 1573 | static void read_lexical_block_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1574 | |
96408a79 SA |
1575 | static void read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu); |
1576 | ||
ff013f42 JK |
1577 | static int dwarf2_ranges_read (unsigned, CORE_ADDR *, CORE_ADDR *, |
1578 | struct dwarf2_cu *, struct partial_symtab *); | |
1579 | ||
a14ed312 | 1580 | static int dwarf2_get_pc_bounds (struct die_info *, |
d85a05f0 DJ |
1581 | CORE_ADDR *, CORE_ADDR *, struct dwarf2_cu *, |
1582 | struct partial_symtab *); | |
c906108c | 1583 | |
fae299cd DC |
1584 | static void get_scope_pc_bounds (struct die_info *, |
1585 | CORE_ADDR *, CORE_ADDR *, | |
1586 | struct dwarf2_cu *); | |
1587 | ||
801e3a5b JB |
1588 | static void dwarf2_record_block_ranges (struct die_info *, struct block *, |
1589 | CORE_ADDR, struct dwarf2_cu *); | |
1590 | ||
a14ed312 | 1591 | static void dwarf2_add_field (struct field_info *, struct die_info *, |
e7c27a73 | 1592 | struct dwarf2_cu *); |
c906108c | 1593 | |
a14ed312 | 1594 | static void dwarf2_attach_fields_to_type (struct field_info *, |
e7c27a73 | 1595 | struct type *, struct dwarf2_cu *); |
c906108c | 1596 | |
a14ed312 | 1597 | static void dwarf2_add_member_fn (struct field_info *, |
e26fb1d7 | 1598 | struct die_info *, struct type *, |
e7c27a73 | 1599 | struct dwarf2_cu *); |
c906108c | 1600 | |
a14ed312 | 1601 | static void dwarf2_attach_fn_fields_to_type (struct field_info *, |
3e43a32a MS |
1602 | struct type *, |
1603 | struct dwarf2_cu *); | |
c906108c | 1604 | |
134d01f1 | 1605 | static void process_structure_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1606 | |
e7c27a73 | 1607 | static void read_common_block (struct die_info *, struct dwarf2_cu *); |
c906108c | 1608 | |
e7c27a73 | 1609 | static void read_namespace (struct die_info *die, struct dwarf2_cu *); |
d9fa45fe | 1610 | |
5d7cb8df JK |
1611 | static void read_module (struct die_info *die, struct dwarf2_cu *cu); |
1612 | ||
27aa8d6a SW |
1613 | static void read_import_statement (struct die_info *die, struct dwarf2_cu *); |
1614 | ||
74921315 KS |
1615 | static int read_namespace_alias (struct die_info *die, struct dwarf2_cu *cu); |
1616 | ||
f55ee35c JK |
1617 | static struct type *read_module_type (struct die_info *die, |
1618 | struct dwarf2_cu *cu); | |
1619 | ||
38d518c9 | 1620 | static const char *namespace_name (struct die_info *die, |
e142c38c | 1621 | int *is_anonymous, struct dwarf2_cu *); |
38d518c9 | 1622 | |
134d01f1 | 1623 | static void process_enumeration_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1624 | |
e7c27a73 | 1625 | static CORE_ADDR decode_locdesc (struct dwarf_block *, struct dwarf2_cu *); |
c906108c | 1626 | |
6e70227d | 1627 | static enum dwarf_array_dim_ordering read_array_order (struct die_info *, |
7ca2d3a3 DL |
1628 | struct dwarf2_cu *); |
1629 | ||
bf6af496 | 1630 | static struct die_info *read_die_and_siblings_1 |
d521ce57 | 1631 | (const struct die_reader_specs *, const gdb_byte *, const gdb_byte **, |
bf6af496 | 1632 | struct die_info *); |
639d11d3 | 1633 | |
dee91e82 | 1634 | static struct die_info *read_die_and_siblings (const struct die_reader_specs *, |
d521ce57 TT |
1635 | const gdb_byte *info_ptr, |
1636 | const gdb_byte **new_info_ptr, | |
639d11d3 DC |
1637 | struct die_info *parent); |
1638 | ||
d521ce57 TT |
1639 | static const gdb_byte *read_full_die_1 (const struct die_reader_specs *, |
1640 | struct die_info **, const gdb_byte *, | |
1641 | int *, int); | |
3019eac3 | 1642 | |
d521ce57 TT |
1643 | static const gdb_byte *read_full_die (const struct die_reader_specs *, |
1644 | struct die_info **, const gdb_byte *, | |
1645 | int *); | |
93311388 | 1646 | |
e7c27a73 | 1647 | static void process_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1648 | |
15d034d0 TT |
1649 | static const char *dwarf2_canonicalize_name (const char *, struct dwarf2_cu *, |
1650 | struct obstack *); | |
71c25dea | 1651 | |
15d034d0 | 1652 | static const char *dwarf2_name (struct die_info *die, struct dwarf2_cu *); |
9219021c | 1653 | |
15d034d0 | 1654 | static const char *dwarf2_full_name (const char *name, |
98bfdba5 PA |
1655 | struct die_info *die, |
1656 | struct dwarf2_cu *cu); | |
1657 | ||
ca69b9e6 DE |
1658 | static const char *dwarf2_physname (const char *name, struct die_info *die, |
1659 | struct dwarf2_cu *cu); | |
1660 | ||
e142c38c | 1661 | static struct die_info *dwarf2_extension (struct die_info *die, |
f2f0e013 | 1662 | struct dwarf2_cu **); |
9219021c | 1663 | |
f39c6ffd | 1664 | static const char *dwarf_tag_name (unsigned int); |
c906108c | 1665 | |
f39c6ffd | 1666 | static const char *dwarf_attr_name (unsigned int); |
c906108c | 1667 | |
f39c6ffd | 1668 | static const char *dwarf_form_name (unsigned int); |
c906108c | 1669 | |
a14ed312 | 1670 | static char *dwarf_bool_name (unsigned int); |
c906108c | 1671 | |
f39c6ffd | 1672 | static const char *dwarf_type_encoding_name (unsigned int); |
c906108c | 1673 | |
f9aca02d | 1674 | static struct die_info *sibling_die (struct die_info *); |
c906108c | 1675 | |
d97bc12b DE |
1676 | static void dump_die_shallow (struct ui_file *, int indent, struct die_info *); |
1677 | ||
1678 | static void dump_die_for_error (struct die_info *); | |
1679 | ||
1680 | static void dump_die_1 (struct ui_file *, int level, int max_level, | |
1681 | struct die_info *); | |
c906108c | 1682 | |
d97bc12b | 1683 | /*static*/ void dump_die (struct die_info *, int max_level); |
c906108c | 1684 | |
51545339 | 1685 | static void store_in_ref_table (struct die_info *, |
10b3939b | 1686 | struct dwarf2_cu *); |
c906108c | 1687 | |
ff39bb5e | 1688 | static sect_offset dwarf2_get_ref_die_offset (const struct attribute *); |
c906108c | 1689 | |
ff39bb5e | 1690 | static LONGEST dwarf2_get_attr_constant_value (const struct attribute *, int); |
a02abb62 | 1691 | |
348e048f | 1692 | static struct die_info *follow_die_ref_or_sig (struct die_info *, |
ff39bb5e | 1693 | const struct attribute *, |
348e048f DE |
1694 | struct dwarf2_cu **); |
1695 | ||
10b3939b | 1696 | static struct die_info *follow_die_ref (struct die_info *, |
ff39bb5e | 1697 | const struct attribute *, |
f2f0e013 | 1698 | struct dwarf2_cu **); |
c906108c | 1699 | |
348e048f | 1700 | static struct die_info *follow_die_sig (struct die_info *, |
ff39bb5e | 1701 | const struct attribute *, |
348e048f DE |
1702 | struct dwarf2_cu **); |
1703 | ||
ac9ec31b DE |
1704 | static struct type *get_signatured_type (struct die_info *, ULONGEST, |
1705 | struct dwarf2_cu *); | |
1706 | ||
1707 | static struct type *get_DW_AT_signature_type (struct die_info *, | |
ff39bb5e | 1708 | const struct attribute *, |
ac9ec31b DE |
1709 | struct dwarf2_cu *); |
1710 | ||
e5fe5e75 | 1711 | static void load_full_type_unit (struct dwarf2_per_cu_data *per_cu); |
348e048f | 1712 | |
52dc124a | 1713 | static void read_signatured_type (struct signatured_type *); |
348e048f | 1714 | |
f4dc4d17 | 1715 | static struct type_unit_group *get_type_unit_group |
ff39bb5e | 1716 | (struct dwarf2_cu *, const struct attribute *); |
f4dc4d17 DE |
1717 | |
1718 | static void build_type_unit_groups (die_reader_func_ftype *, void *); | |
1719 | ||
c906108c SS |
1720 | /* memory allocation interface */ |
1721 | ||
7b5a2f43 | 1722 | static struct dwarf_block *dwarf_alloc_block (struct dwarf2_cu *); |
c906108c | 1723 | |
b60c80d6 | 1724 | static struct die_info *dwarf_alloc_die (struct dwarf2_cu *, int); |
c906108c | 1725 | |
09262596 | 1726 | static void dwarf_decode_macros (struct dwarf2_cu *, unsigned int, |
15d034d0 | 1727 | const char *, int); |
2e276125 | 1728 | |
6e5a29e1 | 1729 | static int attr_form_is_block (const struct attribute *); |
8e19ed76 | 1730 | |
6e5a29e1 | 1731 | static int attr_form_is_section_offset (const struct attribute *); |
3690dd37 | 1732 | |
6e5a29e1 | 1733 | static int attr_form_is_constant (const struct attribute *); |
3690dd37 | 1734 | |
6e5a29e1 | 1735 | static int attr_form_is_ref (const struct attribute *); |
7771576e | 1736 | |
8cf6f0b1 TT |
1737 | static void fill_in_loclist_baton (struct dwarf2_cu *cu, |
1738 | struct dwarf2_loclist_baton *baton, | |
ff39bb5e | 1739 | const struct attribute *attr); |
8cf6f0b1 | 1740 | |
ff39bb5e | 1741 | static void dwarf2_symbol_mark_computed (const struct attribute *attr, |
93e7bd98 | 1742 | struct symbol *sym, |
f1e6e072 TT |
1743 | struct dwarf2_cu *cu, |
1744 | int is_block); | |
4c2df51b | 1745 | |
d521ce57 TT |
1746 | static const gdb_byte *skip_one_die (const struct die_reader_specs *reader, |
1747 | const gdb_byte *info_ptr, | |
1748 | struct abbrev_info *abbrev); | |
4bb7a0a7 | 1749 | |
72bf9492 DJ |
1750 | static void free_stack_comp_unit (void *); |
1751 | ||
72bf9492 DJ |
1752 | static hashval_t partial_die_hash (const void *item); |
1753 | ||
1754 | static int partial_die_eq (const void *item_lhs, const void *item_rhs); | |
1755 | ||
ae038cb0 | 1756 | static struct dwarf2_per_cu_data *dwarf2_find_containing_comp_unit |
36586728 | 1757 | (sect_offset offset, unsigned int offset_in_dwz, struct objfile *objfile); |
ae038cb0 | 1758 | |
9816fde3 | 1759 | static void init_one_comp_unit (struct dwarf2_cu *cu, |
23745b47 | 1760 | struct dwarf2_per_cu_data *per_cu); |
9816fde3 JK |
1761 | |
1762 | static void prepare_one_comp_unit (struct dwarf2_cu *cu, | |
95554aad TT |
1763 | struct die_info *comp_unit_die, |
1764 | enum language pretend_language); | |
93311388 | 1765 | |
68dc6402 | 1766 | static void free_heap_comp_unit (void *); |
ae038cb0 DJ |
1767 | |
1768 | static void free_cached_comp_units (void *); | |
1769 | ||
1770 | static void age_cached_comp_units (void); | |
1771 | ||
dee91e82 | 1772 | static void free_one_cached_comp_unit (struct dwarf2_per_cu_data *); |
ae038cb0 | 1773 | |
f792889a DJ |
1774 | static struct type *set_die_type (struct die_info *, struct type *, |
1775 | struct dwarf2_cu *); | |
1c379e20 | 1776 | |
ae038cb0 DJ |
1777 | static void create_all_comp_units (struct objfile *); |
1778 | ||
0e50663e | 1779 | static int create_all_type_units (struct objfile *); |
1fd400ff | 1780 | |
95554aad TT |
1781 | static void load_full_comp_unit (struct dwarf2_per_cu_data *, |
1782 | enum language); | |
10b3939b | 1783 | |
95554aad TT |
1784 | static void process_full_comp_unit (struct dwarf2_per_cu_data *, |
1785 | enum language); | |
10b3939b | 1786 | |
f4dc4d17 DE |
1787 | static void process_full_type_unit (struct dwarf2_per_cu_data *, |
1788 | enum language); | |
1789 | ||
10b3939b DJ |
1790 | static void dwarf2_add_dependence (struct dwarf2_cu *, |
1791 | struct dwarf2_per_cu_data *); | |
1792 | ||
ae038cb0 DJ |
1793 | static void dwarf2_mark (struct dwarf2_cu *); |
1794 | ||
1795 | static void dwarf2_clear_marks (struct dwarf2_per_cu_data *); | |
1796 | ||
b64f50a1 | 1797 | static struct type *get_die_type_at_offset (sect_offset, |
ac9ec31b | 1798 | struct dwarf2_per_cu_data *); |
673bfd45 | 1799 | |
f792889a | 1800 | static struct type *get_die_type (struct die_info *die, struct dwarf2_cu *cu); |
72019c9c | 1801 | |
9291a0cd TT |
1802 | static void dwarf2_release_queue (void *dummy); |
1803 | ||
95554aad TT |
1804 | static void queue_comp_unit (struct dwarf2_per_cu_data *per_cu, |
1805 | enum language pretend_language); | |
1806 | ||
a0f42c21 | 1807 | static void process_queue (void); |
9291a0cd TT |
1808 | |
1809 | static void find_file_and_directory (struct die_info *die, | |
1810 | struct dwarf2_cu *cu, | |
15d034d0 | 1811 | const char **name, const char **comp_dir); |
9291a0cd TT |
1812 | |
1813 | static char *file_full_name (int file, struct line_header *lh, | |
1814 | const char *comp_dir); | |
1815 | ||
d521ce57 | 1816 | static const gdb_byte *read_and_check_comp_unit_head |
36586728 TT |
1817 | (struct comp_unit_head *header, |
1818 | struct dwarf2_section_info *section, | |
d521ce57 | 1819 | struct dwarf2_section_info *abbrev_section, const gdb_byte *info_ptr, |
36586728 TT |
1820 | int is_debug_types_section); |
1821 | ||
fd820528 | 1822 | static void init_cutu_and_read_dies |
f4dc4d17 DE |
1823 | (struct dwarf2_per_cu_data *this_cu, struct abbrev_table *abbrev_table, |
1824 | int use_existing_cu, int keep, | |
3019eac3 DE |
1825 | die_reader_func_ftype *die_reader_func, void *data); |
1826 | ||
dee91e82 DE |
1827 | static void init_cutu_and_read_dies_simple |
1828 | (struct dwarf2_per_cu_data *this_cu, | |
1829 | die_reader_func_ftype *die_reader_func, void *data); | |
9291a0cd | 1830 | |
673bfd45 | 1831 | static htab_t allocate_signatured_type_table (struct objfile *objfile); |
1fd400ff | 1832 | |
3019eac3 DE |
1833 | static htab_t allocate_dwo_unit_table (struct objfile *objfile); |
1834 | ||
57d63ce2 DE |
1835 | static struct dwo_unit *lookup_dwo_unit_in_dwp |
1836 | (struct dwp_file *dwp_file, const char *comp_dir, | |
1837 | ULONGEST signature, int is_debug_types); | |
a2ce51a0 DE |
1838 | |
1839 | static struct dwp_file *get_dwp_file (void); | |
1840 | ||
3019eac3 | 1841 | static struct dwo_unit *lookup_dwo_comp_unit |
a1855c1d | 1842 | (struct dwarf2_per_cu_data *, const char *, const char *, ULONGEST); |
3019eac3 DE |
1843 | |
1844 | static struct dwo_unit *lookup_dwo_type_unit | |
a1855c1d | 1845 | (struct signatured_type *, const char *, const char *); |
3019eac3 | 1846 | |
89e63ee4 DE |
1847 | static void queue_and_load_all_dwo_tus (struct dwarf2_per_cu_data *); |
1848 | ||
3019eac3 DE |
1849 | static void free_dwo_file_cleanup (void *); |
1850 | ||
95554aad TT |
1851 | static void process_cu_includes (void); |
1852 | ||
1b80a9fa | 1853 | static void check_producer (struct dwarf2_cu *cu); |
4390d890 DE |
1854 | \f |
1855 | /* Various complaints about symbol reading that don't abort the process. */ | |
1856 | ||
1857 | static void | |
1858 | dwarf2_statement_list_fits_in_line_number_section_complaint (void) | |
1859 | { | |
1860 | complaint (&symfile_complaints, | |
1861 | _("statement list doesn't fit in .debug_line section")); | |
1862 | } | |
1863 | ||
1864 | static void | |
1865 | dwarf2_debug_line_missing_file_complaint (void) | |
1866 | { | |
1867 | complaint (&symfile_complaints, | |
1868 | _(".debug_line section has line data without a file")); | |
1869 | } | |
1870 | ||
1871 | static void | |
1872 | dwarf2_debug_line_missing_end_sequence_complaint (void) | |
1873 | { | |
1874 | complaint (&symfile_complaints, | |
1875 | _(".debug_line section has line " | |
1876 | "program sequence without an end")); | |
1877 | } | |
1878 | ||
1879 | static void | |
1880 | dwarf2_complex_location_expr_complaint (void) | |
1881 | { | |
1882 | complaint (&symfile_complaints, _("location expression too complex")); | |
1883 | } | |
1884 | ||
1885 | static void | |
1886 | dwarf2_const_value_length_mismatch_complaint (const char *arg1, int arg2, | |
1887 | int arg3) | |
1888 | { | |
1889 | complaint (&symfile_complaints, | |
1890 | _("const value length mismatch for '%s', got %d, expected %d"), | |
1891 | arg1, arg2, arg3); | |
1892 | } | |
1893 | ||
1894 | static void | |
1895 | dwarf2_section_buffer_overflow_complaint (struct dwarf2_section_info *section) | |
1896 | { | |
1897 | complaint (&symfile_complaints, | |
1898 | _("debug info runs off end of %s section" | |
1899 | " [in module %s]"), | |
a32a8923 DE |
1900 | get_section_name (section), |
1901 | get_section_file_name (section)); | |
4390d890 | 1902 | } |
1b80a9fa | 1903 | |
4390d890 DE |
1904 | static void |
1905 | dwarf2_macro_malformed_definition_complaint (const char *arg1) | |
1906 | { | |
1907 | complaint (&symfile_complaints, | |
1908 | _("macro debug info contains a " | |
1909 | "malformed macro definition:\n`%s'"), | |
1910 | arg1); | |
1911 | } | |
1912 | ||
1913 | static void | |
1914 | dwarf2_invalid_attrib_class_complaint (const char *arg1, const char *arg2) | |
1915 | { | |
1916 | complaint (&symfile_complaints, | |
1917 | _("invalid attribute class or form for '%s' in '%s'"), | |
1918 | arg1, arg2); | |
1919 | } | |
1920 | \f | |
9291a0cd TT |
1921 | #if WORDS_BIGENDIAN |
1922 | ||
1923 | /* Convert VALUE between big- and little-endian. */ | |
1924 | static offset_type | |
1925 | byte_swap (offset_type value) | |
1926 | { | |
1927 | offset_type result; | |
1928 | ||
1929 | result = (value & 0xff) << 24; | |
1930 | result |= (value & 0xff00) << 8; | |
1931 | result |= (value & 0xff0000) >> 8; | |
1932 | result |= (value & 0xff000000) >> 24; | |
1933 | return result; | |
1934 | } | |
1935 | ||
1936 | #define MAYBE_SWAP(V) byte_swap (V) | |
1937 | ||
1938 | #else | |
1939 | #define MAYBE_SWAP(V) (V) | |
1940 | #endif /* WORDS_BIGENDIAN */ | |
1941 | ||
1942 | /* The suffix for an index file. */ | |
1943 | #define INDEX_SUFFIX ".gdb-index" | |
1944 | ||
c906108c | 1945 | /* Try to locate the sections we need for DWARF 2 debugging |
251d32d9 TG |
1946 | information and return true if we have enough to do something. |
1947 | NAMES points to the dwarf2 section names, or is NULL if the standard | |
1948 | ELF names are used. */ | |
c906108c SS |
1949 | |
1950 | int | |
251d32d9 TG |
1951 | dwarf2_has_info (struct objfile *objfile, |
1952 | const struct dwarf2_debug_sections *names) | |
c906108c | 1953 | { |
be391dca TT |
1954 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); |
1955 | if (!dwarf2_per_objfile) | |
1956 | { | |
1957 | /* Initialize per-objfile state. */ | |
1958 | struct dwarf2_per_objfile *data | |
1959 | = obstack_alloc (&objfile->objfile_obstack, sizeof (*data)); | |
9a619af0 | 1960 | |
be391dca TT |
1961 | memset (data, 0, sizeof (*data)); |
1962 | set_objfile_data (objfile, dwarf2_objfile_data_key, data); | |
1963 | dwarf2_per_objfile = data; | |
6502dd73 | 1964 | |
251d32d9 TG |
1965 | bfd_map_over_sections (objfile->obfd, dwarf2_locate_sections, |
1966 | (void *) names); | |
be391dca TT |
1967 | dwarf2_per_objfile->objfile = objfile; |
1968 | } | |
73869dc2 DE |
1969 | return (!dwarf2_per_objfile->info.is_virtual |
1970 | && dwarf2_per_objfile->info.s.asection != NULL | |
1971 | && !dwarf2_per_objfile->abbrev.is_virtual | |
1972 | && dwarf2_per_objfile->abbrev.s.asection != NULL); | |
1973 | } | |
1974 | ||
1975 | /* Return the containing section of virtual section SECTION. */ | |
1976 | ||
1977 | static struct dwarf2_section_info * | |
1978 | get_containing_section (const struct dwarf2_section_info *section) | |
1979 | { | |
1980 | gdb_assert (section->is_virtual); | |
1981 | return section->s.containing_section; | |
c906108c SS |
1982 | } |
1983 | ||
a32a8923 DE |
1984 | /* Return the bfd owner of SECTION. */ |
1985 | ||
1986 | static struct bfd * | |
1987 | get_section_bfd_owner (const struct dwarf2_section_info *section) | |
1988 | { | |
73869dc2 DE |
1989 | if (section->is_virtual) |
1990 | { | |
1991 | section = get_containing_section (section); | |
1992 | gdb_assert (!section->is_virtual); | |
1993 | } | |
1994 | return section->s.asection->owner; | |
a32a8923 DE |
1995 | } |
1996 | ||
1997 | /* Return the bfd section of SECTION. | |
1998 | Returns NULL if the section is not present. */ | |
1999 | ||
2000 | static asection * | |
2001 | get_section_bfd_section (const struct dwarf2_section_info *section) | |
2002 | { | |
73869dc2 DE |
2003 | if (section->is_virtual) |
2004 | { | |
2005 | section = get_containing_section (section); | |
2006 | gdb_assert (!section->is_virtual); | |
2007 | } | |
2008 | return section->s.asection; | |
a32a8923 DE |
2009 | } |
2010 | ||
2011 | /* Return the name of SECTION. */ | |
2012 | ||
2013 | static const char * | |
2014 | get_section_name (const struct dwarf2_section_info *section) | |
2015 | { | |
2016 | asection *sectp = get_section_bfd_section (section); | |
2017 | ||
2018 | gdb_assert (sectp != NULL); | |
2019 | return bfd_section_name (get_section_bfd_owner (section), sectp); | |
2020 | } | |
2021 | ||
2022 | /* Return the name of the file SECTION is in. */ | |
2023 | ||
2024 | static const char * | |
2025 | get_section_file_name (const struct dwarf2_section_info *section) | |
2026 | { | |
2027 | bfd *abfd = get_section_bfd_owner (section); | |
2028 | ||
2029 | return bfd_get_filename (abfd); | |
2030 | } | |
2031 | ||
2032 | /* Return the id of SECTION. | |
2033 | Returns 0 if SECTION doesn't exist. */ | |
2034 | ||
2035 | static int | |
2036 | get_section_id (const struct dwarf2_section_info *section) | |
2037 | { | |
2038 | asection *sectp = get_section_bfd_section (section); | |
2039 | ||
2040 | if (sectp == NULL) | |
2041 | return 0; | |
2042 | return sectp->id; | |
2043 | } | |
2044 | ||
2045 | /* Return the flags of SECTION. | |
73869dc2 | 2046 | SECTION (or containing section if this is a virtual section) must exist. */ |
a32a8923 DE |
2047 | |
2048 | static int | |
2049 | get_section_flags (const struct dwarf2_section_info *section) | |
2050 | { | |
2051 | asection *sectp = get_section_bfd_section (section); | |
2052 | ||
2053 | gdb_assert (sectp != NULL); | |
2054 | return bfd_get_section_flags (sectp->owner, sectp); | |
2055 | } | |
2056 | ||
251d32d9 TG |
2057 | /* When loading sections, we look either for uncompressed section or for |
2058 | compressed section names. */ | |
233a11ab CS |
2059 | |
2060 | static int | |
251d32d9 TG |
2061 | section_is_p (const char *section_name, |
2062 | const struct dwarf2_section_names *names) | |
233a11ab | 2063 | { |
251d32d9 TG |
2064 | if (names->normal != NULL |
2065 | && strcmp (section_name, names->normal) == 0) | |
2066 | return 1; | |
2067 | if (names->compressed != NULL | |
2068 | && strcmp (section_name, names->compressed) == 0) | |
2069 | return 1; | |
2070 | return 0; | |
233a11ab CS |
2071 | } |
2072 | ||
c906108c SS |
2073 | /* This function is mapped across the sections and remembers the |
2074 | offset and size of each of the debugging sections we are interested | |
2075 | in. */ | |
2076 | ||
2077 | static void | |
251d32d9 | 2078 | dwarf2_locate_sections (bfd *abfd, asection *sectp, void *vnames) |
c906108c | 2079 | { |
251d32d9 | 2080 | const struct dwarf2_debug_sections *names; |
dc7650b8 | 2081 | flagword aflag = bfd_get_section_flags (abfd, sectp); |
251d32d9 TG |
2082 | |
2083 | if (vnames == NULL) | |
2084 | names = &dwarf2_elf_names; | |
2085 | else | |
2086 | names = (const struct dwarf2_debug_sections *) vnames; | |
2087 | ||
dc7650b8 JK |
2088 | if ((aflag & SEC_HAS_CONTENTS) == 0) |
2089 | { | |
2090 | } | |
2091 | else if (section_is_p (sectp->name, &names->info)) | |
c906108c | 2092 | { |
73869dc2 | 2093 | dwarf2_per_objfile->info.s.asection = sectp; |
dce234bc | 2094 | dwarf2_per_objfile->info.size = bfd_get_section_size (sectp); |
c906108c | 2095 | } |
251d32d9 | 2096 | else if (section_is_p (sectp->name, &names->abbrev)) |
c906108c | 2097 | { |
73869dc2 | 2098 | dwarf2_per_objfile->abbrev.s.asection = sectp; |
dce234bc | 2099 | dwarf2_per_objfile->abbrev.size = bfd_get_section_size (sectp); |
c906108c | 2100 | } |
251d32d9 | 2101 | else if (section_is_p (sectp->name, &names->line)) |
c906108c | 2102 | { |
73869dc2 | 2103 | dwarf2_per_objfile->line.s.asection = sectp; |
dce234bc | 2104 | dwarf2_per_objfile->line.size = bfd_get_section_size (sectp); |
c906108c | 2105 | } |
251d32d9 | 2106 | else if (section_is_p (sectp->name, &names->loc)) |
c906108c | 2107 | { |
73869dc2 | 2108 | dwarf2_per_objfile->loc.s.asection = sectp; |
dce234bc | 2109 | dwarf2_per_objfile->loc.size = bfd_get_section_size (sectp); |
c906108c | 2110 | } |
251d32d9 | 2111 | else if (section_is_p (sectp->name, &names->macinfo)) |
c906108c | 2112 | { |
73869dc2 | 2113 | dwarf2_per_objfile->macinfo.s.asection = sectp; |
dce234bc | 2114 | dwarf2_per_objfile->macinfo.size = bfd_get_section_size (sectp); |
c906108c | 2115 | } |
cf2c3c16 TT |
2116 | else if (section_is_p (sectp->name, &names->macro)) |
2117 | { | |
73869dc2 | 2118 | dwarf2_per_objfile->macro.s.asection = sectp; |
cf2c3c16 TT |
2119 | dwarf2_per_objfile->macro.size = bfd_get_section_size (sectp); |
2120 | } | |
251d32d9 | 2121 | else if (section_is_p (sectp->name, &names->str)) |
c906108c | 2122 | { |
73869dc2 | 2123 | dwarf2_per_objfile->str.s.asection = sectp; |
dce234bc | 2124 | dwarf2_per_objfile->str.size = bfd_get_section_size (sectp); |
c906108c | 2125 | } |
3019eac3 DE |
2126 | else if (section_is_p (sectp->name, &names->addr)) |
2127 | { | |
73869dc2 | 2128 | dwarf2_per_objfile->addr.s.asection = sectp; |
3019eac3 DE |
2129 | dwarf2_per_objfile->addr.size = bfd_get_section_size (sectp); |
2130 | } | |
251d32d9 | 2131 | else if (section_is_p (sectp->name, &names->frame)) |
b6af0555 | 2132 | { |
73869dc2 | 2133 | dwarf2_per_objfile->frame.s.asection = sectp; |
dce234bc | 2134 | dwarf2_per_objfile->frame.size = bfd_get_section_size (sectp); |
b6af0555 | 2135 | } |
251d32d9 | 2136 | else if (section_is_p (sectp->name, &names->eh_frame)) |
b6af0555 | 2137 | { |
73869dc2 | 2138 | dwarf2_per_objfile->eh_frame.s.asection = sectp; |
dc7650b8 | 2139 | dwarf2_per_objfile->eh_frame.size = bfd_get_section_size (sectp); |
b6af0555 | 2140 | } |
251d32d9 | 2141 | else if (section_is_p (sectp->name, &names->ranges)) |
af34e669 | 2142 | { |
73869dc2 | 2143 | dwarf2_per_objfile->ranges.s.asection = sectp; |
dce234bc | 2144 | dwarf2_per_objfile->ranges.size = bfd_get_section_size (sectp); |
af34e669 | 2145 | } |
251d32d9 | 2146 | else if (section_is_p (sectp->name, &names->types)) |
348e048f | 2147 | { |
8b70b953 TT |
2148 | struct dwarf2_section_info type_section; |
2149 | ||
2150 | memset (&type_section, 0, sizeof (type_section)); | |
73869dc2 | 2151 | type_section.s.asection = sectp; |
8b70b953 TT |
2152 | type_section.size = bfd_get_section_size (sectp); |
2153 | ||
2154 | VEC_safe_push (dwarf2_section_info_def, dwarf2_per_objfile->types, | |
2155 | &type_section); | |
348e048f | 2156 | } |
251d32d9 | 2157 | else if (section_is_p (sectp->name, &names->gdb_index)) |
9291a0cd | 2158 | { |
73869dc2 | 2159 | dwarf2_per_objfile->gdb_index.s.asection = sectp; |
9291a0cd TT |
2160 | dwarf2_per_objfile->gdb_index.size = bfd_get_section_size (sectp); |
2161 | } | |
dce234bc | 2162 | |
72dca2f5 FR |
2163 | if ((bfd_get_section_flags (abfd, sectp) & SEC_LOAD) |
2164 | && bfd_section_vma (abfd, sectp) == 0) | |
2165 | dwarf2_per_objfile->has_section_at_zero = 1; | |
c906108c SS |
2166 | } |
2167 | ||
fceca515 DE |
2168 | /* A helper function that decides whether a section is empty, |
2169 | or not present. */ | |
9e0ac564 TT |
2170 | |
2171 | static int | |
19ac8c2e | 2172 | dwarf2_section_empty_p (const struct dwarf2_section_info *section) |
9e0ac564 | 2173 | { |
73869dc2 DE |
2174 | if (section->is_virtual) |
2175 | return section->size == 0; | |
2176 | return section->s.asection == NULL || section->size == 0; | |
9e0ac564 TT |
2177 | } |
2178 | ||
3019eac3 DE |
2179 | /* Read the contents of the section INFO. |
2180 | OBJFILE is the main object file, but not necessarily the file where | |
a32a8923 DE |
2181 | the section comes from. E.g., for DWO files the bfd of INFO is the bfd |
2182 | of the DWO file. | |
dce234bc | 2183 | If the section is compressed, uncompress it before returning. */ |
c906108c | 2184 | |
dce234bc PP |
2185 | static void |
2186 | dwarf2_read_section (struct objfile *objfile, struct dwarf2_section_info *info) | |
c906108c | 2187 | { |
a32a8923 | 2188 | asection *sectp; |
3019eac3 | 2189 | bfd *abfd; |
dce234bc | 2190 | gdb_byte *buf, *retbuf; |
c906108c | 2191 | |
be391dca TT |
2192 | if (info->readin) |
2193 | return; | |
dce234bc | 2194 | info->buffer = NULL; |
be391dca | 2195 | info->readin = 1; |
188dd5d6 | 2196 | |
9e0ac564 | 2197 | if (dwarf2_section_empty_p (info)) |
dce234bc | 2198 | return; |
c906108c | 2199 | |
a32a8923 | 2200 | sectp = get_section_bfd_section (info); |
3019eac3 | 2201 | |
73869dc2 DE |
2202 | /* If this is a virtual section we need to read in the real one first. */ |
2203 | if (info->is_virtual) | |
2204 | { | |
2205 | struct dwarf2_section_info *containing_section = | |
2206 | get_containing_section (info); | |
2207 | ||
2208 | gdb_assert (sectp != NULL); | |
2209 | if ((sectp->flags & SEC_RELOC) != 0) | |
2210 | { | |
2211 | error (_("Dwarf Error: DWP format V2 with relocations is not" | |
2212 | " supported in section %s [in module %s]"), | |
2213 | get_section_name (info), get_section_file_name (info)); | |
2214 | } | |
2215 | dwarf2_read_section (objfile, containing_section); | |
2216 | /* Other code should have already caught virtual sections that don't | |
2217 | fit. */ | |
2218 | gdb_assert (info->virtual_offset + info->size | |
2219 | <= containing_section->size); | |
2220 | /* If the real section is empty or there was a problem reading the | |
2221 | section we shouldn't get here. */ | |
2222 | gdb_assert (containing_section->buffer != NULL); | |
2223 | info->buffer = containing_section->buffer + info->virtual_offset; | |
2224 | return; | |
2225 | } | |
2226 | ||
4bf44c1c TT |
2227 | /* If the section has relocations, we must read it ourselves. |
2228 | Otherwise we attach it to the BFD. */ | |
2229 | if ((sectp->flags & SEC_RELOC) == 0) | |
dce234bc | 2230 | { |
d521ce57 | 2231 | info->buffer = gdb_bfd_map_section (sectp, &info->size); |
4bf44c1c | 2232 | return; |
dce234bc | 2233 | } |
dce234bc | 2234 | |
4bf44c1c TT |
2235 | buf = obstack_alloc (&objfile->objfile_obstack, info->size); |
2236 | info->buffer = buf; | |
dce234bc PP |
2237 | |
2238 | /* When debugging .o files, we may need to apply relocations; see | |
2239 | http://sourceware.org/ml/gdb-patches/2002-04/msg00136.html . | |
2240 | We never compress sections in .o files, so we only need to | |
2241 | try this when the section is not compressed. */ | |
ac8035ab | 2242 | retbuf = symfile_relocate_debug_section (objfile, sectp, buf); |
dce234bc PP |
2243 | if (retbuf != NULL) |
2244 | { | |
2245 | info->buffer = retbuf; | |
2246 | return; | |
2247 | } | |
2248 | ||
a32a8923 DE |
2249 | abfd = get_section_bfd_owner (info); |
2250 | gdb_assert (abfd != NULL); | |
2251 | ||
dce234bc PP |
2252 | if (bfd_seek (abfd, sectp->filepos, SEEK_SET) != 0 |
2253 | || bfd_bread (buf, info->size, abfd) != info->size) | |
19ac8c2e DE |
2254 | { |
2255 | error (_("Dwarf Error: Can't read DWARF data" | |
2256 | " in section %s [in module %s]"), | |
2257 | bfd_section_name (abfd, sectp), bfd_get_filename (abfd)); | |
2258 | } | |
dce234bc PP |
2259 | } |
2260 | ||
9e0ac564 TT |
2261 | /* A helper function that returns the size of a section in a safe way. |
2262 | If you are positive that the section has been read before using the | |
2263 | size, then it is safe to refer to the dwarf2_section_info object's | |
2264 | "size" field directly. In other cases, you must call this | |
2265 | function, because for compressed sections the size field is not set | |
2266 | correctly until the section has been read. */ | |
2267 | ||
2268 | static bfd_size_type | |
2269 | dwarf2_section_size (struct objfile *objfile, | |
2270 | struct dwarf2_section_info *info) | |
2271 | { | |
2272 | if (!info->readin) | |
2273 | dwarf2_read_section (objfile, info); | |
2274 | return info->size; | |
2275 | } | |
2276 | ||
dce234bc | 2277 | /* Fill in SECTP, BUFP and SIZEP with section info, given OBJFILE and |
0963b4bd | 2278 | SECTION_NAME. */ |
af34e669 | 2279 | |
dce234bc | 2280 | void |
3017a003 TG |
2281 | dwarf2_get_section_info (struct objfile *objfile, |
2282 | enum dwarf2_section_enum sect, | |
d521ce57 | 2283 | asection **sectp, const gdb_byte **bufp, |
dce234bc PP |
2284 | bfd_size_type *sizep) |
2285 | { | |
2286 | struct dwarf2_per_objfile *data | |
2287 | = objfile_data (objfile, dwarf2_objfile_data_key); | |
2288 | struct dwarf2_section_info *info; | |
a3b2a86b TT |
2289 | |
2290 | /* We may see an objfile without any DWARF, in which case we just | |
2291 | return nothing. */ | |
2292 | if (data == NULL) | |
2293 | { | |
2294 | *sectp = NULL; | |
2295 | *bufp = NULL; | |
2296 | *sizep = 0; | |
2297 | return; | |
2298 | } | |
3017a003 TG |
2299 | switch (sect) |
2300 | { | |
2301 | case DWARF2_DEBUG_FRAME: | |
2302 | info = &data->frame; | |
2303 | break; | |
2304 | case DWARF2_EH_FRAME: | |
2305 | info = &data->eh_frame; | |
2306 | break; | |
2307 | default: | |
2308 | gdb_assert_not_reached ("unexpected section"); | |
2309 | } | |
dce234bc | 2310 | |
9e0ac564 | 2311 | dwarf2_read_section (objfile, info); |
dce234bc | 2312 | |
a32a8923 | 2313 | *sectp = get_section_bfd_section (info); |
dce234bc PP |
2314 | *bufp = info->buffer; |
2315 | *sizep = info->size; | |
2316 | } | |
2317 | ||
36586728 TT |
2318 | /* A helper function to find the sections for a .dwz file. */ |
2319 | ||
2320 | static void | |
2321 | locate_dwz_sections (bfd *abfd, asection *sectp, void *arg) | |
2322 | { | |
2323 | struct dwz_file *dwz_file = arg; | |
2324 | ||
2325 | /* Note that we only support the standard ELF names, because .dwz | |
2326 | is ELF-only (at the time of writing). */ | |
2327 | if (section_is_p (sectp->name, &dwarf2_elf_names.abbrev)) | |
2328 | { | |
73869dc2 | 2329 | dwz_file->abbrev.s.asection = sectp; |
36586728 TT |
2330 | dwz_file->abbrev.size = bfd_get_section_size (sectp); |
2331 | } | |
2332 | else if (section_is_p (sectp->name, &dwarf2_elf_names.info)) | |
2333 | { | |
73869dc2 | 2334 | dwz_file->info.s.asection = sectp; |
36586728 TT |
2335 | dwz_file->info.size = bfd_get_section_size (sectp); |
2336 | } | |
2337 | else if (section_is_p (sectp->name, &dwarf2_elf_names.str)) | |
2338 | { | |
73869dc2 | 2339 | dwz_file->str.s.asection = sectp; |
36586728 TT |
2340 | dwz_file->str.size = bfd_get_section_size (sectp); |
2341 | } | |
2342 | else if (section_is_p (sectp->name, &dwarf2_elf_names.line)) | |
2343 | { | |
73869dc2 | 2344 | dwz_file->line.s.asection = sectp; |
36586728 TT |
2345 | dwz_file->line.size = bfd_get_section_size (sectp); |
2346 | } | |
2347 | else if (section_is_p (sectp->name, &dwarf2_elf_names.macro)) | |
2348 | { | |
73869dc2 | 2349 | dwz_file->macro.s.asection = sectp; |
36586728 TT |
2350 | dwz_file->macro.size = bfd_get_section_size (sectp); |
2351 | } | |
2ec9a5e0 TT |
2352 | else if (section_is_p (sectp->name, &dwarf2_elf_names.gdb_index)) |
2353 | { | |
73869dc2 | 2354 | dwz_file->gdb_index.s.asection = sectp; |
2ec9a5e0 TT |
2355 | dwz_file->gdb_index.size = bfd_get_section_size (sectp); |
2356 | } | |
36586728 TT |
2357 | } |
2358 | ||
4db1a1dc TT |
2359 | /* Open the separate '.dwz' debug file, if needed. Return NULL if |
2360 | there is no .gnu_debugaltlink section in the file. Error if there | |
2361 | is such a section but the file cannot be found. */ | |
36586728 TT |
2362 | |
2363 | static struct dwz_file * | |
2364 | dwarf2_get_dwz_file (void) | |
2365 | { | |
4db1a1dc TT |
2366 | bfd *dwz_bfd; |
2367 | char *data; | |
36586728 TT |
2368 | struct cleanup *cleanup; |
2369 | const char *filename; | |
2370 | struct dwz_file *result; | |
acd13123 | 2371 | bfd_size_type buildid_len_arg; |
dc294be5 TT |
2372 | size_t buildid_len; |
2373 | bfd_byte *buildid; | |
36586728 TT |
2374 | |
2375 | if (dwarf2_per_objfile->dwz_file != NULL) | |
2376 | return dwarf2_per_objfile->dwz_file; | |
2377 | ||
4db1a1dc TT |
2378 | bfd_set_error (bfd_error_no_error); |
2379 | data = bfd_get_alt_debug_link_info (dwarf2_per_objfile->objfile->obfd, | |
acd13123 | 2380 | &buildid_len_arg, &buildid); |
4db1a1dc TT |
2381 | if (data == NULL) |
2382 | { | |
2383 | if (bfd_get_error () == bfd_error_no_error) | |
2384 | return NULL; | |
2385 | error (_("could not read '.gnu_debugaltlink' section: %s"), | |
2386 | bfd_errmsg (bfd_get_error ())); | |
2387 | } | |
36586728 | 2388 | cleanup = make_cleanup (xfree, data); |
dc294be5 | 2389 | make_cleanup (xfree, buildid); |
36586728 | 2390 | |
acd13123 TT |
2391 | buildid_len = (size_t) buildid_len_arg; |
2392 | ||
f9d83a0b | 2393 | filename = (const char *) data; |
36586728 TT |
2394 | if (!IS_ABSOLUTE_PATH (filename)) |
2395 | { | |
4262abfb | 2396 | char *abs = gdb_realpath (objfile_name (dwarf2_per_objfile->objfile)); |
36586728 TT |
2397 | char *rel; |
2398 | ||
2399 | make_cleanup (xfree, abs); | |
2400 | abs = ldirname (abs); | |
2401 | make_cleanup (xfree, abs); | |
2402 | ||
2403 | rel = concat (abs, SLASH_STRING, filename, (char *) NULL); | |
2404 | make_cleanup (xfree, rel); | |
2405 | filename = rel; | |
2406 | } | |
2407 | ||
dc294be5 TT |
2408 | /* First try the file name given in the section. If that doesn't |
2409 | work, try to use the build-id instead. */ | |
36586728 | 2410 | dwz_bfd = gdb_bfd_open (filename, gnutarget, -1); |
dc294be5 | 2411 | if (dwz_bfd != NULL) |
36586728 | 2412 | { |
dc294be5 TT |
2413 | if (!build_id_verify (dwz_bfd, buildid_len, buildid)) |
2414 | { | |
2415 | gdb_bfd_unref (dwz_bfd); | |
2416 | dwz_bfd = NULL; | |
2417 | } | |
36586728 TT |
2418 | } |
2419 | ||
dc294be5 TT |
2420 | if (dwz_bfd == NULL) |
2421 | dwz_bfd = build_id_to_debug_bfd (buildid_len, buildid); | |
2422 | ||
2423 | if (dwz_bfd == NULL) | |
2424 | error (_("could not find '.gnu_debugaltlink' file for %s"), | |
2425 | objfile_name (dwarf2_per_objfile->objfile)); | |
2426 | ||
36586728 TT |
2427 | result = OBSTACK_ZALLOC (&dwarf2_per_objfile->objfile->objfile_obstack, |
2428 | struct dwz_file); | |
2429 | result->dwz_bfd = dwz_bfd; | |
2430 | ||
2431 | bfd_map_over_sections (dwz_bfd, locate_dwz_sections, result); | |
2432 | ||
2433 | do_cleanups (cleanup); | |
2434 | ||
8d2cc612 | 2435 | dwarf2_per_objfile->dwz_file = result; |
36586728 TT |
2436 | return result; |
2437 | } | |
9291a0cd | 2438 | \f |
7b9f3c50 DE |
2439 | /* DWARF quick_symbols_functions support. */ |
2440 | ||
2441 | /* TUs can share .debug_line entries, and there can be a lot more TUs than | |
2442 | unique line tables, so we maintain a separate table of all .debug_line | |
2443 | derived entries to support the sharing. | |
2444 | All the quick functions need is the list of file names. We discard the | |
2445 | line_header when we're done and don't need to record it here. */ | |
2446 | struct quick_file_names | |
2447 | { | |
094b34ac DE |
2448 | /* The data used to construct the hash key. */ |
2449 | struct stmt_list_hash hash; | |
7b9f3c50 DE |
2450 | |
2451 | /* The number of entries in file_names, real_names. */ | |
2452 | unsigned int num_file_names; | |
2453 | ||
2454 | /* The file names from the line table, after being run through | |
2455 | file_full_name. */ | |
2456 | const char **file_names; | |
2457 | ||
2458 | /* The file names from the line table after being run through | |
2459 | gdb_realpath. These are computed lazily. */ | |
2460 | const char **real_names; | |
2461 | }; | |
2462 | ||
2463 | /* When using the index (and thus not using psymtabs), each CU has an | |
2464 | object of this type. This is used to hold information needed by | |
2465 | the various "quick" methods. */ | |
2466 | struct dwarf2_per_cu_quick_data | |
2467 | { | |
2468 | /* The file table. This can be NULL if there was no file table | |
2469 | or it's currently not read in. | |
2470 | NOTE: This points into dwarf2_per_objfile->quick_file_names_table. */ | |
2471 | struct quick_file_names *file_names; | |
2472 | ||
2473 | /* The corresponding symbol table. This is NULL if symbols for this | |
2474 | CU have not yet been read. */ | |
2475 | struct symtab *symtab; | |
2476 | ||
2477 | /* A temporary mark bit used when iterating over all CUs in | |
2478 | expand_symtabs_matching. */ | |
2479 | unsigned int mark : 1; | |
2480 | ||
2481 | /* True if we've tried to read the file table and found there isn't one. | |
2482 | There will be no point in trying to read it again next time. */ | |
2483 | unsigned int no_file_data : 1; | |
2484 | }; | |
2485 | ||
094b34ac DE |
2486 | /* Utility hash function for a stmt_list_hash. */ |
2487 | ||
2488 | static hashval_t | |
2489 | hash_stmt_list_entry (const struct stmt_list_hash *stmt_list_hash) | |
2490 | { | |
2491 | hashval_t v = 0; | |
2492 | ||
2493 | if (stmt_list_hash->dwo_unit != NULL) | |
2494 | v += (uintptr_t) stmt_list_hash->dwo_unit->dwo_file; | |
2495 | v += stmt_list_hash->line_offset.sect_off; | |
2496 | return v; | |
2497 | } | |
2498 | ||
2499 | /* Utility equality function for a stmt_list_hash. */ | |
2500 | ||
2501 | static int | |
2502 | eq_stmt_list_entry (const struct stmt_list_hash *lhs, | |
2503 | const struct stmt_list_hash *rhs) | |
2504 | { | |
2505 | if ((lhs->dwo_unit != NULL) != (rhs->dwo_unit != NULL)) | |
2506 | return 0; | |
2507 | if (lhs->dwo_unit != NULL | |
2508 | && lhs->dwo_unit->dwo_file != rhs->dwo_unit->dwo_file) | |
2509 | return 0; | |
2510 | ||
2511 | return lhs->line_offset.sect_off == rhs->line_offset.sect_off; | |
2512 | } | |
2513 | ||
7b9f3c50 DE |
2514 | /* Hash function for a quick_file_names. */ |
2515 | ||
2516 | static hashval_t | |
2517 | hash_file_name_entry (const void *e) | |
2518 | { | |
2519 | const struct quick_file_names *file_data = e; | |
2520 | ||
094b34ac | 2521 | return hash_stmt_list_entry (&file_data->hash); |
7b9f3c50 DE |
2522 | } |
2523 | ||
2524 | /* Equality function for a quick_file_names. */ | |
2525 | ||
2526 | static int | |
2527 | eq_file_name_entry (const void *a, const void *b) | |
2528 | { | |
2529 | const struct quick_file_names *ea = a; | |
2530 | const struct quick_file_names *eb = b; | |
2531 | ||
094b34ac | 2532 | return eq_stmt_list_entry (&ea->hash, &eb->hash); |
7b9f3c50 DE |
2533 | } |
2534 | ||
2535 | /* Delete function for a quick_file_names. */ | |
2536 | ||
2537 | static void | |
2538 | delete_file_name_entry (void *e) | |
2539 | { | |
2540 | struct quick_file_names *file_data = e; | |
2541 | int i; | |
2542 | ||
2543 | for (i = 0; i < file_data->num_file_names; ++i) | |
2544 | { | |
2545 | xfree ((void*) file_data->file_names[i]); | |
2546 | if (file_data->real_names) | |
2547 | xfree ((void*) file_data->real_names[i]); | |
2548 | } | |
2549 | ||
2550 | /* The space for the struct itself lives on objfile_obstack, | |
2551 | so we don't free it here. */ | |
2552 | } | |
2553 | ||
2554 | /* Create a quick_file_names hash table. */ | |
2555 | ||
2556 | static htab_t | |
2557 | create_quick_file_names_table (unsigned int nr_initial_entries) | |
2558 | { | |
2559 | return htab_create_alloc (nr_initial_entries, | |
2560 | hash_file_name_entry, eq_file_name_entry, | |
2561 | delete_file_name_entry, xcalloc, xfree); | |
2562 | } | |
9291a0cd | 2563 | |
918dd910 JK |
2564 | /* Read in PER_CU->CU. This function is unrelated to symtabs, symtab would |
2565 | have to be created afterwards. You should call age_cached_comp_units after | |
2566 | processing PER_CU->CU. dw2_setup must have been already called. */ | |
2567 | ||
2568 | static void | |
2569 | load_cu (struct dwarf2_per_cu_data *per_cu) | |
2570 | { | |
3019eac3 | 2571 | if (per_cu->is_debug_types) |
e5fe5e75 | 2572 | load_full_type_unit (per_cu); |
918dd910 | 2573 | else |
95554aad | 2574 | load_full_comp_unit (per_cu, language_minimal); |
918dd910 | 2575 | |
918dd910 | 2576 | gdb_assert (per_cu->cu != NULL); |
2dc860c0 DE |
2577 | |
2578 | dwarf2_find_base_address (per_cu->cu->dies, per_cu->cu); | |
918dd910 JK |
2579 | } |
2580 | ||
a0f42c21 | 2581 | /* Read in the symbols for PER_CU. */ |
2fdf6df6 | 2582 | |
9291a0cd | 2583 | static void |
a0f42c21 | 2584 | dw2_do_instantiate_symtab (struct dwarf2_per_cu_data *per_cu) |
9291a0cd TT |
2585 | { |
2586 | struct cleanup *back_to; | |
2587 | ||
f4dc4d17 DE |
2588 | /* Skip type_unit_groups, reading the type units they contain |
2589 | is handled elsewhere. */ | |
2590 | if (IS_TYPE_UNIT_GROUP (per_cu)) | |
2591 | return; | |
2592 | ||
9291a0cd TT |
2593 | back_to = make_cleanup (dwarf2_release_queue, NULL); |
2594 | ||
95554aad TT |
2595 | if (dwarf2_per_objfile->using_index |
2596 | ? per_cu->v.quick->symtab == NULL | |
2597 | : (per_cu->v.psymtab == NULL || !per_cu->v.psymtab->readin)) | |
2598 | { | |
2599 | queue_comp_unit (per_cu, language_minimal); | |
2600 | load_cu (per_cu); | |
89e63ee4 DE |
2601 | |
2602 | /* If we just loaded a CU from a DWO, and we're working with an index | |
2603 | that may badly handle TUs, load all the TUs in that DWO as well. | |
2604 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021 */ | |
2605 | if (!per_cu->is_debug_types | |
2606 | && per_cu->cu->dwo_unit != NULL | |
2607 | && dwarf2_per_objfile->index_table != NULL | |
2608 | && dwarf2_per_objfile->index_table->version <= 7 | |
2609 | /* DWP files aren't supported yet. */ | |
2610 | && get_dwp_file () == NULL) | |
2611 | queue_and_load_all_dwo_tus (per_cu); | |
95554aad | 2612 | } |
9291a0cd | 2613 | |
a0f42c21 | 2614 | process_queue (); |
9291a0cd TT |
2615 | |
2616 | /* Age the cache, releasing compilation units that have not | |
2617 | been used recently. */ | |
2618 | age_cached_comp_units (); | |
2619 | ||
2620 | do_cleanups (back_to); | |
2621 | } | |
2622 | ||
2623 | /* Ensure that the symbols for PER_CU have been read in. OBJFILE is | |
2624 | the objfile from which this CU came. Returns the resulting symbol | |
2625 | table. */ | |
2fdf6df6 | 2626 | |
9291a0cd | 2627 | static struct symtab * |
a0f42c21 | 2628 | dw2_instantiate_symtab (struct dwarf2_per_cu_data *per_cu) |
9291a0cd | 2629 | { |
95554aad | 2630 | gdb_assert (dwarf2_per_objfile->using_index); |
9291a0cd TT |
2631 | if (!per_cu->v.quick->symtab) |
2632 | { | |
2633 | struct cleanup *back_to = make_cleanup (free_cached_comp_units, NULL); | |
2634 | increment_reading_symtab (); | |
a0f42c21 | 2635 | dw2_do_instantiate_symtab (per_cu); |
95554aad | 2636 | process_cu_includes (); |
9291a0cd TT |
2637 | do_cleanups (back_to); |
2638 | } | |
2639 | return per_cu->v.quick->symtab; | |
2640 | } | |
2641 | ||
f4dc4d17 DE |
2642 | /* Return the CU given its index. |
2643 | ||
2644 | This is intended for loops like: | |
2645 | ||
2646 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units | |
2647 | + dwarf2_per_objfile->n_type_units); ++i) | |
2648 | { | |
2649 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); | |
2650 | ||
2651 | ...; | |
2652 | } | |
2653 | */ | |
2fdf6df6 | 2654 | |
1fd400ff TT |
2655 | static struct dwarf2_per_cu_data * |
2656 | dw2_get_cu (int index) | |
2657 | { | |
2658 | if (index >= dwarf2_per_objfile->n_comp_units) | |
2659 | { | |
f4dc4d17 | 2660 | index -= dwarf2_per_objfile->n_comp_units; |
094b34ac DE |
2661 | gdb_assert (index < dwarf2_per_objfile->n_type_units); |
2662 | return &dwarf2_per_objfile->all_type_units[index]->per_cu; | |
f4dc4d17 DE |
2663 | } |
2664 | ||
2665 | return dwarf2_per_objfile->all_comp_units[index]; | |
2666 | } | |
2667 | ||
2668 | /* Return the primary CU given its index. | |
2669 | The difference between this function and dw2_get_cu is in the handling | |
2670 | of type units (TUs). Here we return the type_unit_group object. | |
2671 | ||
2672 | This is intended for loops like: | |
2673 | ||
2674 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units | |
2675 | + dwarf2_per_objfile->n_type_unit_groups); ++i) | |
2676 | { | |
2677 | struct dwarf2_per_cu_data *per_cu = dw2_get_primary_cu (i); | |
2678 | ||
2679 | ...; | |
2680 | } | |
2681 | */ | |
2682 | ||
2683 | static struct dwarf2_per_cu_data * | |
2684 | dw2_get_primary_cu (int index) | |
2685 | { | |
2686 | if (index >= dwarf2_per_objfile->n_comp_units) | |
2687 | { | |
1fd400ff | 2688 | index -= dwarf2_per_objfile->n_comp_units; |
094b34ac DE |
2689 | gdb_assert (index < dwarf2_per_objfile->n_type_unit_groups); |
2690 | return &dwarf2_per_objfile->all_type_unit_groups[index]->per_cu; | |
1fd400ff | 2691 | } |
f4dc4d17 | 2692 | |
1fd400ff TT |
2693 | return dwarf2_per_objfile->all_comp_units[index]; |
2694 | } | |
2695 | ||
2ec9a5e0 TT |
2696 | /* A helper for create_cus_from_index that handles a given list of |
2697 | CUs. */ | |
2fdf6df6 | 2698 | |
74a0d9f6 | 2699 | static void |
2ec9a5e0 TT |
2700 | create_cus_from_index_list (struct objfile *objfile, |
2701 | const gdb_byte *cu_list, offset_type n_elements, | |
2702 | struct dwarf2_section_info *section, | |
2703 | int is_dwz, | |
2704 | int base_offset) | |
9291a0cd TT |
2705 | { |
2706 | offset_type i; | |
9291a0cd | 2707 | |
2ec9a5e0 | 2708 | for (i = 0; i < n_elements; i += 2) |
9291a0cd TT |
2709 | { |
2710 | struct dwarf2_per_cu_data *the_cu; | |
2711 | ULONGEST offset, length; | |
2712 | ||
74a0d9f6 JK |
2713 | gdb_static_assert (sizeof (ULONGEST) >= 8); |
2714 | offset = extract_unsigned_integer (cu_list, 8, BFD_ENDIAN_LITTLE); | |
2715 | length = extract_unsigned_integer (cu_list + 8, 8, BFD_ENDIAN_LITTLE); | |
9291a0cd TT |
2716 | cu_list += 2 * 8; |
2717 | ||
2718 | the_cu = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
2719 | struct dwarf2_per_cu_data); | |
b64f50a1 | 2720 | the_cu->offset.sect_off = offset; |
9291a0cd TT |
2721 | the_cu->length = length; |
2722 | the_cu->objfile = objfile; | |
8a0459fd | 2723 | the_cu->section = section; |
9291a0cd TT |
2724 | the_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
2725 | struct dwarf2_per_cu_quick_data); | |
2ec9a5e0 TT |
2726 | the_cu->is_dwz = is_dwz; |
2727 | dwarf2_per_objfile->all_comp_units[base_offset + i / 2] = the_cu; | |
9291a0cd | 2728 | } |
9291a0cd TT |
2729 | } |
2730 | ||
2ec9a5e0 | 2731 | /* Read the CU list from the mapped index, and use it to create all |
74a0d9f6 | 2732 | the CU objects for this objfile. */ |
2ec9a5e0 | 2733 | |
74a0d9f6 | 2734 | static void |
2ec9a5e0 TT |
2735 | create_cus_from_index (struct objfile *objfile, |
2736 | const gdb_byte *cu_list, offset_type cu_list_elements, | |
2737 | const gdb_byte *dwz_list, offset_type dwz_elements) | |
2738 | { | |
2739 | struct dwz_file *dwz; | |
2740 | ||
2741 | dwarf2_per_objfile->n_comp_units = (cu_list_elements + dwz_elements) / 2; | |
2742 | dwarf2_per_objfile->all_comp_units | |
2743 | = obstack_alloc (&objfile->objfile_obstack, | |
2744 | dwarf2_per_objfile->n_comp_units | |
2745 | * sizeof (struct dwarf2_per_cu_data *)); | |
2746 | ||
74a0d9f6 JK |
2747 | create_cus_from_index_list (objfile, cu_list, cu_list_elements, |
2748 | &dwarf2_per_objfile->info, 0, 0); | |
2ec9a5e0 TT |
2749 | |
2750 | if (dwz_elements == 0) | |
74a0d9f6 | 2751 | return; |
2ec9a5e0 TT |
2752 | |
2753 | dwz = dwarf2_get_dwz_file (); | |
74a0d9f6 JK |
2754 | create_cus_from_index_list (objfile, dwz_list, dwz_elements, &dwz->info, 1, |
2755 | cu_list_elements / 2); | |
2ec9a5e0 TT |
2756 | } |
2757 | ||
1fd400ff | 2758 | /* Create the signatured type hash table from the index. */ |
673bfd45 | 2759 | |
74a0d9f6 | 2760 | static void |
673bfd45 | 2761 | create_signatured_type_table_from_index (struct objfile *objfile, |
8b70b953 | 2762 | struct dwarf2_section_info *section, |
673bfd45 DE |
2763 | const gdb_byte *bytes, |
2764 | offset_type elements) | |
1fd400ff TT |
2765 | { |
2766 | offset_type i; | |
673bfd45 | 2767 | htab_t sig_types_hash; |
1fd400ff | 2768 | |
d467dd73 DE |
2769 | dwarf2_per_objfile->n_type_units = elements / 3; |
2770 | dwarf2_per_objfile->all_type_units | |
a2ce51a0 DE |
2771 | = xmalloc (dwarf2_per_objfile->n_type_units |
2772 | * sizeof (struct signatured_type *)); | |
1fd400ff | 2773 | |
673bfd45 | 2774 | sig_types_hash = allocate_signatured_type_table (objfile); |
1fd400ff TT |
2775 | |
2776 | for (i = 0; i < elements; i += 3) | |
2777 | { | |
52dc124a DE |
2778 | struct signatured_type *sig_type; |
2779 | ULONGEST offset, type_offset_in_tu, signature; | |
1fd400ff TT |
2780 | void **slot; |
2781 | ||
74a0d9f6 JK |
2782 | gdb_static_assert (sizeof (ULONGEST) >= 8); |
2783 | offset = extract_unsigned_integer (bytes, 8, BFD_ENDIAN_LITTLE); | |
2784 | type_offset_in_tu = extract_unsigned_integer (bytes + 8, 8, | |
2785 | BFD_ENDIAN_LITTLE); | |
1fd400ff TT |
2786 | signature = extract_unsigned_integer (bytes + 16, 8, BFD_ENDIAN_LITTLE); |
2787 | bytes += 3 * 8; | |
2788 | ||
52dc124a | 2789 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
1fd400ff | 2790 | struct signatured_type); |
52dc124a | 2791 | sig_type->signature = signature; |
3019eac3 DE |
2792 | sig_type->type_offset_in_tu.cu_off = type_offset_in_tu; |
2793 | sig_type->per_cu.is_debug_types = 1; | |
8a0459fd | 2794 | sig_type->per_cu.section = section; |
52dc124a DE |
2795 | sig_type->per_cu.offset.sect_off = offset; |
2796 | sig_type->per_cu.objfile = objfile; | |
2797 | sig_type->per_cu.v.quick | |
1fd400ff TT |
2798 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
2799 | struct dwarf2_per_cu_quick_data); | |
2800 | ||
52dc124a DE |
2801 | slot = htab_find_slot (sig_types_hash, sig_type, INSERT); |
2802 | *slot = sig_type; | |
1fd400ff | 2803 | |
b4dd5633 | 2804 | dwarf2_per_objfile->all_type_units[i / 3] = sig_type; |
1fd400ff TT |
2805 | } |
2806 | ||
673bfd45 | 2807 | dwarf2_per_objfile->signatured_types = sig_types_hash; |
1fd400ff TT |
2808 | } |
2809 | ||
9291a0cd TT |
2810 | /* Read the address map data from the mapped index, and use it to |
2811 | populate the objfile's psymtabs_addrmap. */ | |
2fdf6df6 | 2812 | |
9291a0cd TT |
2813 | static void |
2814 | create_addrmap_from_index (struct objfile *objfile, struct mapped_index *index) | |
2815 | { | |
2816 | const gdb_byte *iter, *end; | |
2817 | struct obstack temp_obstack; | |
2818 | struct addrmap *mutable_map; | |
2819 | struct cleanup *cleanup; | |
2820 | CORE_ADDR baseaddr; | |
2821 | ||
2822 | obstack_init (&temp_obstack); | |
2823 | cleanup = make_cleanup_obstack_free (&temp_obstack); | |
2824 | mutable_map = addrmap_create_mutable (&temp_obstack); | |
2825 | ||
2826 | iter = index->address_table; | |
2827 | end = iter + index->address_table_size; | |
2828 | ||
2829 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
2830 | ||
2831 | while (iter < end) | |
2832 | { | |
2833 | ULONGEST hi, lo, cu_index; | |
2834 | lo = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
2835 | iter += 8; | |
2836 | hi = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
2837 | iter += 8; | |
2838 | cu_index = extract_unsigned_integer (iter, 4, BFD_ENDIAN_LITTLE); | |
2839 | iter += 4; | |
f652bce2 | 2840 | |
24a55014 | 2841 | if (lo > hi) |
f652bce2 | 2842 | { |
24a55014 DE |
2843 | complaint (&symfile_complaints, |
2844 | _(".gdb_index address table has invalid range (%s - %s)"), | |
c0cd8254 | 2845 | hex_string (lo), hex_string (hi)); |
24a55014 | 2846 | continue; |
f652bce2 | 2847 | } |
24a55014 DE |
2848 | |
2849 | if (cu_index >= dwarf2_per_objfile->n_comp_units) | |
f652bce2 DE |
2850 | { |
2851 | complaint (&symfile_complaints, | |
2852 | _(".gdb_index address table has invalid CU number %u"), | |
2853 | (unsigned) cu_index); | |
24a55014 | 2854 | continue; |
f652bce2 | 2855 | } |
24a55014 DE |
2856 | |
2857 | addrmap_set_empty (mutable_map, lo + baseaddr, hi + baseaddr - 1, | |
2858 | dw2_get_cu (cu_index)); | |
9291a0cd TT |
2859 | } |
2860 | ||
2861 | objfile->psymtabs_addrmap = addrmap_create_fixed (mutable_map, | |
2862 | &objfile->objfile_obstack); | |
2863 | do_cleanups (cleanup); | |
2864 | } | |
2865 | ||
59d7bcaf JK |
2866 | /* The hash function for strings in the mapped index. This is the same as |
2867 | SYMBOL_HASH_NEXT, but we keep a separate copy to maintain control over the | |
2868 | implementation. This is necessary because the hash function is tied to the | |
2869 | format of the mapped index file. The hash values do not have to match with | |
559a7a62 JK |
2870 | SYMBOL_HASH_NEXT. |
2871 | ||
2872 | Use INT_MAX for INDEX_VERSION if you generate the current index format. */ | |
2fdf6df6 | 2873 | |
9291a0cd | 2874 | static hashval_t |
559a7a62 | 2875 | mapped_index_string_hash (int index_version, const void *p) |
9291a0cd TT |
2876 | { |
2877 | const unsigned char *str = (const unsigned char *) p; | |
2878 | hashval_t r = 0; | |
2879 | unsigned char c; | |
2880 | ||
2881 | while ((c = *str++) != 0) | |
559a7a62 JK |
2882 | { |
2883 | if (index_version >= 5) | |
2884 | c = tolower (c); | |
2885 | r = r * 67 + c - 113; | |
2886 | } | |
9291a0cd TT |
2887 | |
2888 | return r; | |
2889 | } | |
2890 | ||
2891 | /* Find a slot in the mapped index INDEX for the object named NAME. | |
2892 | If NAME is found, set *VEC_OUT to point to the CU vector in the | |
2893 | constant pool and return 1. If NAME cannot be found, return 0. */ | |
2fdf6df6 | 2894 | |
9291a0cd TT |
2895 | static int |
2896 | find_slot_in_mapped_hash (struct mapped_index *index, const char *name, | |
2897 | offset_type **vec_out) | |
2898 | { | |
0cf03b49 JK |
2899 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
2900 | offset_type hash; | |
9291a0cd | 2901 | offset_type slot, step; |
559a7a62 | 2902 | int (*cmp) (const char *, const char *); |
9291a0cd | 2903 | |
0cf03b49 JK |
2904 | if (current_language->la_language == language_cplus |
2905 | || current_language->la_language == language_java | |
2906 | || current_language->la_language == language_fortran) | |
2907 | { | |
2908 | /* NAME is already canonical. Drop any qualifiers as .gdb_index does | |
2909 | not contain any. */ | |
2910 | const char *paren = strchr (name, '('); | |
2911 | ||
2912 | if (paren) | |
2913 | { | |
2914 | char *dup; | |
2915 | ||
2916 | dup = xmalloc (paren - name + 1); | |
2917 | memcpy (dup, name, paren - name); | |
2918 | dup[paren - name] = 0; | |
2919 | ||
2920 | make_cleanup (xfree, dup); | |
2921 | name = dup; | |
2922 | } | |
2923 | } | |
2924 | ||
559a7a62 | 2925 | /* Index version 4 did not support case insensitive searches. But the |
feea76c2 | 2926 | indices for case insensitive languages are built in lowercase, therefore |
559a7a62 JK |
2927 | simulate our NAME being searched is also lowercased. */ |
2928 | hash = mapped_index_string_hash ((index->version == 4 | |
2929 | && case_sensitivity == case_sensitive_off | |
2930 | ? 5 : index->version), | |
2931 | name); | |
2932 | ||
3876f04e DE |
2933 | slot = hash & (index->symbol_table_slots - 1); |
2934 | step = ((hash * 17) & (index->symbol_table_slots - 1)) | 1; | |
559a7a62 | 2935 | cmp = (case_sensitivity == case_sensitive_on ? strcmp : strcasecmp); |
9291a0cd TT |
2936 | |
2937 | for (;;) | |
2938 | { | |
2939 | /* Convert a slot number to an offset into the table. */ | |
2940 | offset_type i = 2 * slot; | |
2941 | const char *str; | |
3876f04e | 2942 | if (index->symbol_table[i] == 0 && index->symbol_table[i + 1] == 0) |
0cf03b49 JK |
2943 | { |
2944 | do_cleanups (back_to); | |
2945 | return 0; | |
2946 | } | |
9291a0cd | 2947 | |
3876f04e | 2948 | str = index->constant_pool + MAYBE_SWAP (index->symbol_table[i]); |
559a7a62 | 2949 | if (!cmp (name, str)) |
9291a0cd TT |
2950 | { |
2951 | *vec_out = (offset_type *) (index->constant_pool | |
3876f04e | 2952 | + MAYBE_SWAP (index->symbol_table[i + 1])); |
0cf03b49 | 2953 | do_cleanups (back_to); |
9291a0cd TT |
2954 | return 1; |
2955 | } | |
2956 | ||
3876f04e | 2957 | slot = (slot + step) & (index->symbol_table_slots - 1); |
9291a0cd TT |
2958 | } |
2959 | } | |
2960 | ||
2ec9a5e0 TT |
2961 | /* A helper function that reads the .gdb_index from SECTION and fills |
2962 | in MAP. FILENAME is the name of the file containing the section; | |
2963 | it is used for error reporting. DEPRECATED_OK is nonzero if it is | |
2964 | ok to use deprecated sections. | |
2965 | ||
2966 | CU_LIST, CU_LIST_ELEMENTS, TYPES_LIST, and TYPES_LIST_ELEMENTS are | |
2967 | out parameters that are filled in with information about the CU and | |
2968 | TU lists in the section. | |
2969 | ||
2970 | Returns 1 if all went well, 0 otherwise. */ | |
2fdf6df6 | 2971 | |
9291a0cd | 2972 | static int |
2ec9a5e0 TT |
2973 | read_index_from_section (struct objfile *objfile, |
2974 | const char *filename, | |
2975 | int deprecated_ok, | |
2976 | struct dwarf2_section_info *section, | |
2977 | struct mapped_index *map, | |
2978 | const gdb_byte **cu_list, | |
2979 | offset_type *cu_list_elements, | |
2980 | const gdb_byte **types_list, | |
2981 | offset_type *types_list_elements) | |
9291a0cd | 2982 | { |
948f8e3d | 2983 | const gdb_byte *addr; |
2ec9a5e0 | 2984 | offset_type version; |
b3b272e1 | 2985 | offset_type *metadata; |
1fd400ff | 2986 | int i; |
9291a0cd | 2987 | |
2ec9a5e0 | 2988 | if (dwarf2_section_empty_p (section)) |
9291a0cd | 2989 | return 0; |
82430852 JK |
2990 | |
2991 | /* Older elfutils strip versions could keep the section in the main | |
2992 | executable while splitting it for the separate debug info file. */ | |
a32a8923 | 2993 | if ((get_section_flags (section) & SEC_HAS_CONTENTS) == 0) |
82430852 JK |
2994 | return 0; |
2995 | ||
2ec9a5e0 | 2996 | dwarf2_read_section (objfile, section); |
9291a0cd | 2997 | |
2ec9a5e0 | 2998 | addr = section->buffer; |
9291a0cd | 2999 | /* Version check. */ |
1fd400ff | 3000 | version = MAYBE_SWAP (*(offset_type *) addr); |
987d643c | 3001 | /* Versions earlier than 3 emitted every copy of a psymbol. This |
a6e293d1 | 3002 | causes the index to behave very poorly for certain requests. Version 3 |
831adc1f | 3003 | contained incomplete addrmap. So, it seems better to just ignore such |
481860b3 | 3004 | indices. */ |
831adc1f | 3005 | if (version < 4) |
481860b3 GB |
3006 | { |
3007 | static int warning_printed = 0; | |
3008 | if (!warning_printed) | |
3009 | { | |
3010 | warning (_("Skipping obsolete .gdb_index section in %s."), | |
2ec9a5e0 | 3011 | filename); |
481860b3 GB |
3012 | warning_printed = 1; |
3013 | } | |
3014 | return 0; | |
3015 | } | |
3016 | /* Index version 4 uses a different hash function than index version | |
3017 | 5 and later. | |
3018 | ||
3019 | Versions earlier than 6 did not emit psymbols for inlined | |
3020 | functions. Using these files will cause GDB not to be able to | |
3021 | set breakpoints on inlined functions by name, so we ignore these | |
e615022a DE |
3022 | indices unless the user has done |
3023 | "set use-deprecated-index-sections on". */ | |
2ec9a5e0 | 3024 | if (version < 6 && !deprecated_ok) |
481860b3 GB |
3025 | { |
3026 | static int warning_printed = 0; | |
3027 | if (!warning_printed) | |
3028 | { | |
e615022a DE |
3029 | warning (_("\ |
3030 | Skipping deprecated .gdb_index section in %s.\n\ | |
3031 | Do \"set use-deprecated-index-sections on\" before the file is read\n\ | |
3032 | to use the section anyway."), | |
2ec9a5e0 | 3033 | filename); |
481860b3 GB |
3034 | warning_printed = 1; |
3035 | } | |
3036 | return 0; | |
3037 | } | |
796a7ff8 | 3038 | /* Version 7 indices generated by gold refer to the CU for a symbol instead |
8943b874 DE |
3039 | of the TU (for symbols coming from TUs), |
3040 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. | |
3041 | Plus gold-generated indices can have duplicate entries for global symbols, | |
3042 | http://sourceware.org/bugzilla/show_bug.cgi?id=15646. | |
3043 | These are just performance bugs, and we can't distinguish gdb-generated | |
3044 | indices from gold-generated ones, so issue no warning here. */ | |
796a7ff8 | 3045 | |
481860b3 | 3046 | /* Indexes with higher version than the one supported by GDB may be no |
594e8718 | 3047 | longer backward compatible. */ |
796a7ff8 | 3048 | if (version > 8) |
594e8718 | 3049 | return 0; |
9291a0cd | 3050 | |
559a7a62 | 3051 | map->version = version; |
2ec9a5e0 | 3052 | map->total_size = section->size; |
9291a0cd TT |
3053 | |
3054 | metadata = (offset_type *) (addr + sizeof (offset_type)); | |
1fd400ff TT |
3055 | |
3056 | i = 0; | |
2ec9a5e0 TT |
3057 | *cu_list = addr + MAYBE_SWAP (metadata[i]); |
3058 | *cu_list_elements = ((MAYBE_SWAP (metadata[i + 1]) - MAYBE_SWAP (metadata[i])) | |
3059 | / 8); | |
1fd400ff TT |
3060 | ++i; |
3061 | ||
2ec9a5e0 TT |
3062 | *types_list = addr + MAYBE_SWAP (metadata[i]); |
3063 | *types_list_elements = ((MAYBE_SWAP (metadata[i + 1]) | |
3064 | - MAYBE_SWAP (metadata[i])) | |
3065 | / 8); | |
987d643c | 3066 | ++i; |
1fd400ff TT |
3067 | |
3068 | map->address_table = addr + MAYBE_SWAP (metadata[i]); | |
3069 | map->address_table_size = (MAYBE_SWAP (metadata[i + 1]) | |
3070 | - MAYBE_SWAP (metadata[i])); | |
3071 | ++i; | |
3072 | ||
3876f04e DE |
3073 | map->symbol_table = (offset_type *) (addr + MAYBE_SWAP (metadata[i])); |
3074 | map->symbol_table_slots = ((MAYBE_SWAP (metadata[i + 1]) | |
3075 | - MAYBE_SWAP (metadata[i])) | |
3076 | / (2 * sizeof (offset_type))); | |
1fd400ff | 3077 | ++i; |
9291a0cd | 3078 | |
f9d83a0b | 3079 | map->constant_pool = (char *) (addr + MAYBE_SWAP (metadata[i])); |
1fd400ff | 3080 | |
2ec9a5e0 TT |
3081 | return 1; |
3082 | } | |
3083 | ||
3084 | ||
3085 | /* Read the index file. If everything went ok, initialize the "quick" | |
3086 | elements of all the CUs and return 1. Otherwise, return 0. */ | |
3087 | ||
3088 | static int | |
3089 | dwarf2_read_index (struct objfile *objfile) | |
3090 | { | |
3091 | struct mapped_index local_map, *map; | |
3092 | const gdb_byte *cu_list, *types_list, *dwz_list = NULL; | |
3093 | offset_type cu_list_elements, types_list_elements, dwz_list_elements = 0; | |
4db1a1dc | 3094 | struct dwz_file *dwz; |
2ec9a5e0 | 3095 | |
4262abfb | 3096 | if (!read_index_from_section (objfile, objfile_name (objfile), |
2ec9a5e0 TT |
3097 | use_deprecated_index_sections, |
3098 | &dwarf2_per_objfile->gdb_index, &local_map, | |
3099 | &cu_list, &cu_list_elements, | |
3100 | &types_list, &types_list_elements)) | |
3101 | return 0; | |
3102 | ||
0fefef59 | 3103 | /* Don't use the index if it's empty. */ |
2ec9a5e0 | 3104 | if (local_map.symbol_table_slots == 0) |
0fefef59 DE |
3105 | return 0; |
3106 | ||
2ec9a5e0 TT |
3107 | /* If there is a .dwz file, read it so we can get its CU list as |
3108 | well. */ | |
4db1a1dc TT |
3109 | dwz = dwarf2_get_dwz_file (); |
3110 | if (dwz != NULL) | |
2ec9a5e0 | 3111 | { |
2ec9a5e0 TT |
3112 | struct mapped_index dwz_map; |
3113 | const gdb_byte *dwz_types_ignore; | |
3114 | offset_type dwz_types_elements_ignore; | |
3115 | ||
3116 | if (!read_index_from_section (objfile, bfd_get_filename (dwz->dwz_bfd), | |
3117 | 1, | |
3118 | &dwz->gdb_index, &dwz_map, | |
3119 | &dwz_list, &dwz_list_elements, | |
3120 | &dwz_types_ignore, | |
3121 | &dwz_types_elements_ignore)) | |
3122 | { | |
3123 | warning (_("could not read '.gdb_index' section from %s; skipping"), | |
3124 | bfd_get_filename (dwz->dwz_bfd)); | |
3125 | return 0; | |
3126 | } | |
3127 | } | |
3128 | ||
74a0d9f6 JK |
3129 | create_cus_from_index (objfile, cu_list, cu_list_elements, dwz_list, |
3130 | dwz_list_elements); | |
1fd400ff | 3131 | |
8b70b953 TT |
3132 | if (types_list_elements) |
3133 | { | |
3134 | struct dwarf2_section_info *section; | |
3135 | ||
3136 | /* We can only handle a single .debug_types when we have an | |
3137 | index. */ | |
3138 | if (VEC_length (dwarf2_section_info_def, dwarf2_per_objfile->types) != 1) | |
3139 | return 0; | |
3140 | ||
3141 | section = VEC_index (dwarf2_section_info_def, | |
3142 | dwarf2_per_objfile->types, 0); | |
3143 | ||
74a0d9f6 JK |
3144 | create_signatured_type_table_from_index (objfile, section, types_list, |
3145 | types_list_elements); | |
8b70b953 | 3146 | } |
9291a0cd | 3147 | |
2ec9a5e0 TT |
3148 | create_addrmap_from_index (objfile, &local_map); |
3149 | ||
3150 | map = obstack_alloc (&objfile->objfile_obstack, sizeof (struct mapped_index)); | |
3151 | *map = local_map; | |
9291a0cd TT |
3152 | |
3153 | dwarf2_per_objfile->index_table = map; | |
3154 | dwarf2_per_objfile->using_index = 1; | |
7b9f3c50 DE |
3155 | dwarf2_per_objfile->quick_file_names_table = |
3156 | create_quick_file_names_table (dwarf2_per_objfile->n_comp_units); | |
9291a0cd TT |
3157 | |
3158 | return 1; | |
3159 | } | |
3160 | ||
3161 | /* A helper for the "quick" functions which sets the global | |
3162 | dwarf2_per_objfile according to OBJFILE. */ | |
2fdf6df6 | 3163 | |
9291a0cd TT |
3164 | static void |
3165 | dw2_setup (struct objfile *objfile) | |
3166 | { | |
3167 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); | |
3168 | gdb_assert (dwarf2_per_objfile); | |
3169 | } | |
3170 | ||
dee91e82 | 3171 | /* die_reader_func for dw2_get_file_names. */ |
2fdf6df6 | 3172 | |
dee91e82 DE |
3173 | static void |
3174 | dw2_get_file_names_reader (const struct die_reader_specs *reader, | |
d521ce57 | 3175 | const gdb_byte *info_ptr, |
dee91e82 DE |
3176 | struct die_info *comp_unit_die, |
3177 | int has_children, | |
3178 | void *data) | |
9291a0cd | 3179 | { |
dee91e82 DE |
3180 | struct dwarf2_cu *cu = reader->cu; |
3181 | struct dwarf2_per_cu_data *this_cu = cu->per_cu; | |
3182 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
094b34ac | 3183 | struct dwarf2_per_cu_data *lh_cu; |
7b9f3c50 | 3184 | struct line_header *lh; |
9291a0cd | 3185 | struct attribute *attr; |
dee91e82 | 3186 | int i; |
15d034d0 | 3187 | const char *name, *comp_dir; |
7b9f3c50 DE |
3188 | void **slot; |
3189 | struct quick_file_names *qfn; | |
3190 | unsigned int line_offset; | |
9291a0cd | 3191 | |
0186c6a7 DE |
3192 | gdb_assert (! this_cu->is_debug_types); |
3193 | ||
07261596 TT |
3194 | /* Our callers never want to match partial units -- instead they |
3195 | will match the enclosing full CU. */ | |
3196 | if (comp_unit_die->tag == DW_TAG_partial_unit) | |
3197 | { | |
3198 | this_cu->v.quick->no_file_data = 1; | |
3199 | return; | |
3200 | } | |
3201 | ||
0186c6a7 | 3202 | lh_cu = this_cu; |
7b9f3c50 DE |
3203 | lh = NULL; |
3204 | slot = NULL; | |
3205 | line_offset = 0; | |
dee91e82 DE |
3206 | |
3207 | attr = dwarf2_attr (comp_unit_die, DW_AT_stmt_list, cu); | |
9291a0cd TT |
3208 | if (attr) |
3209 | { | |
7b9f3c50 DE |
3210 | struct quick_file_names find_entry; |
3211 | ||
3212 | line_offset = DW_UNSND (attr); | |
3213 | ||
3214 | /* We may have already read in this line header (TU line header sharing). | |
3215 | If we have we're done. */ | |
094b34ac DE |
3216 | find_entry.hash.dwo_unit = cu->dwo_unit; |
3217 | find_entry.hash.line_offset.sect_off = line_offset; | |
7b9f3c50 DE |
3218 | slot = htab_find_slot (dwarf2_per_objfile->quick_file_names_table, |
3219 | &find_entry, INSERT); | |
3220 | if (*slot != NULL) | |
3221 | { | |
094b34ac | 3222 | lh_cu->v.quick->file_names = *slot; |
dee91e82 | 3223 | return; |
7b9f3c50 DE |
3224 | } |
3225 | ||
3019eac3 | 3226 | lh = dwarf_decode_line_header (line_offset, cu); |
9291a0cd TT |
3227 | } |
3228 | if (lh == NULL) | |
3229 | { | |
094b34ac | 3230 | lh_cu->v.quick->no_file_data = 1; |
dee91e82 | 3231 | return; |
9291a0cd TT |
3232 | } |
3233 | ||
7b9f3c50 | 3234 | qfn = obstack_alloc (&objfile->objfile_obstack, sizeof (*qfn)); |
094b34ac DE |
3235 | qfn->hash.dwo_unit = cu->dwo_unit; |
3236 | qfn->hash.line_offset.sect_off = line_offset; | |
7b9f3c50 DE |
3237 | gdb_assert (slot != NULL); |
3238 | *slot = qfn; | |
9291a0cd | 3239 | |
dee91e82 | 3240 | find_file_and_directory (comp_unit_die, cu, &name, &comp_dir); |
9291a0cd | 3241 | |
7b9f3c50 DE |
3242 | qfn->num_file_names = lh->num_file_names; |
3243 | qfn->file_names = obstack_alloc (&objfile->objfile_obstack, | |
3244 | lh->num_file_names * sizeof (char *)); | |
9291a0cd | 3245 | for (i = 0; i < lh->num_file_names; ++i) |
7b9f3c50 DE |
3246 | qfn->file_names[i] = file_full_name (i + 1, lh, comp_dir); |
3247 | qfn->real_names = NULL; | |
9291a0cd | 3248 | |
7b9f3c50 | 3249 | free_line_header (lh); |
7b9f3c50 | 3250 | |
094b34ac | 3251 | lh_cu->v.quick->file_names = qfn; |
dee91e82 DE |
3252 | } |
3253 | ||
3254 | /* A helper for the "quick" functions which attempts to read the line | |
3255 | table for THIS_CU. */ | |
3256 | ||
3257 | static struct quick_file_names * | |
e4a48d9d | 3258 | dw2_get_file_names (struct dwarf2_per_cu_data *this_cu) |
dee91e82 | 3259 | { |
0186c6a7 DE |
3260 | /* This should never be called for TUs. */ |
3261 | gdb_assert (! this_cu->is_debug_types); | |
3262 | /* Nor type unit groups. */ | |
3263 | gdb_assert (! IS_TYPE_UNIT_GROUP (this_cu)); | |
f4dc4d17 | 3264 | |
dee91e82 DE |
3265 | if (this_cu->v.quick->file_names != NULL) |
3266 | return this_cu->v.quick->file_names; | |
3267 | /* If we know there is no line data, no point in looking again. */ | |
3268 | if (this_cu->v.quick->no_file_data) | |
3269 | return NULL; | |
3270 | ||
0186c6a7 | 3271 | init_cutu_and_read_dies_simple (this_cu, dw2_get_file_names_reader, NULL); |
dee91e82 DE |
3272 | |
3273 | if (this_cu->v.quick->no_file_data) | |
3274 | return NULL; | |
3275 | return this_cu->v.quick->file_names; | |
9291a0cd TT |
3276 | } |
3277 | ||
3278 | /* A helper for the "quick" functions which computes and caches the | |
7b9f3c50 | 3279 | real path for a given file name from the line table. */ |
2fdf6df6 | 3280 | |
9291a0cd | 3281 | static const char * |
7b9f3c50 DE |
3282 | dw2_get_real_path (struct objfile *objfile, |
3283 | struct quick_file_names *qfn, int index) | |
9291a0cd | 3284 | { |
7b9f3c50 DE |
3285 | if (qfn->real_names == NULL) |
3286 | qfn->real_names = OBSTACK_CALLOC (&objfile->objfile_obstack, | |
fd0a4d76 | 3287 | qfn->num_file_names, char *); |
9291a0cd | 3288 | |
7b9f3c50 DE |
3289 | if (qfn->real_names[index] == NULL) |
3290 | qfn->real_names[index] = gdb_realpath (qfn->file_names[index]); | |
9291a0cd | 3291 | |
7b9f3c50 | 3292 | return qfn->real_names[index]; |
9291a0cd TT |
3293 | } |
3294 | ||
3295 | static struct symtab * | |
3296 | dw2_find_last_source_symtab (struct objfile *objfile) | |
3297 | { | |
3298 | int index; | |
ae2de4f8 | 3299 | |
9291a0cd TT |
3300 | dw2_setup (objfile); |
3301 | index = dwarf2_per_objfile->n_comp_units - 1; | |
a0f42c21 | 3302 | return dw2_instantiate_symtab (dw2_get_cu (index)); |
9291a0cd TT |
3303 | } |
3304 | ||
7b9f3c50 DE |
3305 | /* Traversal function for dw2_forget_cached_source_info. */ |
3306 | ||
3307 | static int | |
3308 | dw2_free_cached_file_names (void **slot, void *info) | |
9291a0cd | 3309 | { |
7b9f3c50 | 3310 | struct quick_file_names *file_data = (struct quick_file_names *) *slot; |
9291a0cd | 3311 | |
7b9f3c50 | 3312 | if (file_data->real_names) |
9291a0cd | 3313 | { |
7b9f3c50 | 3314 | int i; |
9291a0cd | 3315 | |
7b9f3c50 | 3316 | for (i = 0; i < file_data->num_file_names; ++i) |
9291a0cd | 3317 | { |
7b9f3c50 DE |
3318 | xfree ((void*) file_data->real_names[i]); |
3319 | file_data->real_names[i] = NULL; | |
9291a0cd TT |
3320 | } |
3321 | } | |
7b9f3c50 DE |
3322 | |
3323 | return 1; | |
3324 | } | |
3325 | ||
3326 | static void | |
3327 | dw2_forget_cached_source_info (struct objfile *objfile) | |
3328 | { | |
3329 | dw2_setup (objfile); | |
3330 | ||
3331 | htab_traverse_noresize (dwarf2_per_objfile->quick_file_names_table, | |
3332 | dw2_free_cached_file_names, NULL); | |
9291a0cd TT |
3333 | } |
3334 | ||
f8eba3c6 TT |
3335 | /* Helper function for dw2_map_symtabs_matching_filename that expands |
3336 | the symtabs and calls the iterator. */ | |
3337 | ||
3338 | static int | |
3339 | dw2_map_expand_apply (struct objfile *objfile, | |
3340 | struct dwarf2_per_cu_data *per_cu, | |
f5b95b50 | 3341 | const char *name, const char *real_path, |
f8eba3c6 TT |
3342 | int (*callback) (struct symtab *, void *), |
3343 | void *data) | |
3344 | { | |
3345 | struct symtab *last_made = objfile->symtabs; | |
3346 | ||
3347 | /* Don't visit already-expanded CUs. */ | |
3348 | if (per_cu->v.quick->symtab) | |
3349 | return 0; | |
3350 | ||
3351 | /* This may expand more than one symtab, and we want to iterate over | |
3352 | all of them. */ | |
a0f42c21 | 3353 | dw2_instantiate_symtab (per_cu); |
f8eba3c6 | 3354 | |
f5b95b50 | 3355 | return iterate_over_some_symtabs (name, real_path, callback, data, |
f8eba3c6 TT |
3356 | objfile->symtabs, last_made); |
3357 | } | |
3358 | ||
3359 | /* Implementation of the map_symtabs_matching_filename method. */ | |
3360 | ||
9291a0cd | 3361 | static int |
f8eba3c6 | 3362 | dw2_map_symtabs_matching_filename (struct objfile *objfile, const char *name, |
f5b95b50 | 3363 | const char *real_path, |
f8eba3c6 TT |
3364 | int (*callback) (struct symtab *, void *), |
3365 | void *data) | |
9291a0cd TT |
3366 | { |
3367 | int i; | |
c011a4f4 | 3368 | const char *name_basename = lbasename (name); |
9291a0cd TT |
3369 | |
3370 | dw2_setup (objfile); | |
ae2de4f8 | 3371 | |
848e3e78 DE |
3372 | /* The rule is CUs specify all the files, including those used by |
3373 | any TU, so there's no need to scan TUs here. */ | |
f4dc4d17 | 3374 | |
848e3e78 | 3375 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
9291a0cd TT |
3376 | { |
3377 | int j; | |
f4dc4d17 | 3378 | struct dwarf2_per_cu_data *per_cu = dw2_get_primary_cu (i); |
7b9f3c50 | 3379 | struct quick_file_names *file_data; |
9291a0cd | 3380 | |
3d7bb9d9 | 3381 | /* We only need to look at symtabs not already expanded. */ |
e254ef6a | 3382 | if (per_cu->v.quick->symtab) |
9291a0cd TT |
3383 | continue; |
3384 | ||
e4a48d9d | 3385 | file_data = dw2_get_file_names (per_cu); |
7b9f3c50 | 3386 | if (file_data == NULL) |
9291a0cd TT |
3387 | continue; |
3388 | ||
7b9f3c50 | 3389 | for (j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 3390 | { |
7b9f3c50 | 3391 | const char *this_name = file_data->file_names[j]; |
da235a7c | 3392 | const char *this_real_name; |
9291a0cd | 3393 | |
af529f8f | 3394 | if (compare_filenames_for_search (this_name, name)) |
9291a0cd | 3395 | { |
f5b95b50 | 3396 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
f8eba3c6 TT |
3397 | callback, data)) |
3398 | return 1; | |
288e77a7 | 3399 | continue; |
4aac40c8 | 3400 | } |
9291a0cd | 3401 | |
c011a4f4 DE |
3402 | /* Before we invoke realpath, which can get expensive when many |
3403 | files are involved, do a quick comparison of the basenames. */ | |
3404 | if (! basenames_may_differ | |
3405 | && FILENAME_CMP (lbasename (this_name), name_basename) != 0) | |
3406 | continue; | |
3407 | ||
da235a7c JK |
3408 | this_real_name = dw2_get_real_path (objfile, file_data, j); |
3409 | if (compare_filenames_for_search (this_real_name, name)) | |
9291a0cd | 3410 | { |
da235a7c JK |
3411 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
3412 | callback, data)) | |
3413 | return 1; | |
288e77a7 | 3414 | continue; |
da235a7c | 3415 | } |
9291a0cd | 3416 | |
da235a7c JK |
3417 | if (real_path != NULL) |
3418 | { | |
af529f8f JK |
3419 | gdb_assert (IS_ABSOLUTE_PATH (real_path)); |
3420 | gdb_assert (IS_ABSOLUTE_PATH (name)); | |
7b9f3c50 | 3421 | if (this_real_name != NULL |
af529f8f | 3422 | && FILENAME_CMP (real_path, this_real_name) == 0) |
9291a0cd | 3423 | { |
f5b95b50 | 3424 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
f8eba3c6 TT |
3425 | callback, data)) |
3426 | return 1; | |
288e77a7 | 3427 | continue; |
9291a0cd TT |
3428 | } |
3429 | } | |
3430 | } | |
3431 | } | |
3432 | ||
9291a0cd TT |
3433 | return 0; |
3434 | } | |
3435 | ||
da51c347 DE |
3436 | /* Struct used to manage iterating over all CUs looking for a symbol. */ |
3437 | ||
3438 | struct dw2_symtab_iterator | |
9291a0cd | 3439 | { |
da51c347 DE |
3440 | /* The internalized form of .gdb_index. */ |
3441 | struct mapped_index *index; | |
3442 | /* If non-zero, only look for symbols that match BLOCK_INDEX. */ | |
3443 | int want_specific_block; | |
3444 | /* One of GLOBAL_BLOCK or STATIC_BLOCK. | |
3445 | Unused if !WANT_SPECIFIC_BLOCK. */ | |
3446 | int block_index; | |
3447 | /* The kind of symbol we're looking for. */ | |
3448 | domain_enum domain; | |
3449 | /* The list of CUs from the index entry of the symbol, | |
3450 | or NULL if not found. */ | |
3451 | offset_type *vec; | |
3452 | /* The next element in VEC to look at. */ | |
3453 | int next; | |
3454 | /* The number of elements in VEC, or zero if there is no match. */ | |
3455 | int length; | |
8943b874 DE |
3456 | /* Have we seen a global version of the symbol? |
3457 | If so we can ignore all further global instances. | |
3458 | This is to work around gold/15646, inefficient gold-generated | |
3459 | indices. */ | |
3460 | int global_seen; | |
da51c347 | 3461 | }; |
9291a0cd | 3462 | |
da51c347 DE |
3463 | /* Initialize the index symtab iterator ITER. |
3464 | If WANT_SPECIFIC_BLOCK is non-zero, only look for symbols | |
3465 | in block BLOCK_INDEX. Otherwise BLOCK_INDEX is ignored. */ | |
2fdf6df6 | 3466 | |
9291a0cd | 3467 | static void |
da51c347 DE |
3468 | dw2_symtab_iter_init (struct dw2_symtab_iterator *iter, |
3469 | struct mapped_index *index, | |
3470 | int want_specific_block, | |
3471 | int block_index, | |
3472 | domain_enum domain, | |
3473 | const char *name) | |
3474 | { | |
3475 | iter->index = index; | |
3476 | iter->want_specific_block = want_specific_block; | |
3477 | iter->block_index = block_index; | |
3478 | iter->domain = domain; | |
3479 | iter->next = 0; | |
8943b874 | 3480 | iter->global_seen = 0; |
da51c347 DE |
3481 | |
3482 | if (find_slot_in_mapped_hash (index, name, &iter->vec)) | |
3483 | iter->length = MAYBE_SWAP (*iter->vec); | |
3484 | else | |
3485 | { | |
3486 | iter->vec = NULL; | |
3487 | iter->length = 0; | |
3488 | } | |
3489 | } | |
3490 | ||
3491 | /* Return the next matching CU or NULL if there are no more. */ | |
3492 | ||
3493 | static struct dwarf2_per_cu_data * | |
3494 | dw2_symtab_iter_next (struct dw2_symtab_iterator *iter) | |
3495 | { | |
3496 | for ( ; iter->next < iter->length; ++iter->next) | |
3497 | { | |
3498 | offset_type cu_index_and_attrs = | |
3499 | MAYBE_SWAP (iter->vec[iter->next + 1]); | |
3500 | offset_type cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
3190f0c6 | 3501 | struct dwarf2_per_cu_data *per_cu; |
da51c347 DE |
3502 | int want_static = iter->block_index != GLOBAL_BLOCK; |
3503 | /* This value is only valid for index versions >= 7. */ | |
3504 | int is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu_index_and_attrs); | |
3505 | gdb_index_symbol_kind symbol_kind = | |
3506 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
3507 | /* Only check the symbol attributes if they're present. | |
3508 | Indices prior to version 7 don't record them, | |
3509 | and indices >= 7 may elide them for certain symbols | |
3510 | (gold does this). */ | |
3511 | int attrs_valid = | |
3512 | (iter->index->version >= 7 | |
3513 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE); | |
3514 | ||
3190f0c6 DE |
3515 | /* Don't crash on bad data. */ |
3516 | if (cu_index >= (dwarf2_per_objfile->n_comp_units | |
3517 | + dwarf2_per_objfile->n_type_units)) | |
3518 | { | |
3519 | complaint (&symfile_complaints, | |
3520 | _(".gdb_index entry has bad CU index" | |
4262abfb JK |
3521 | " [in module %s]"), |
3522 | objfile_name (dwarf2_per_objfile->objfile)); | |
3190f0c6 DE |
3523 | continue; |
3524 | } | |
3525 | ||
3526 | per_cu = dw2_get_cu (cu_index); | |
3527 | ||
da51c347 DE |
3528 | /* Skip if already read in. */ |
3529 | if (per_cu->v.quick->symtab) | |
3530 | continue; | |
3531 | ||
8943b874 DE |
3532 | /* Check static vs global. */ |
3533 | if (attrs_valid) | |
3534 | { | |
3535 | if (iter->want_specific_block | |
3536 | && want_static != is_static) | |
3537 | continue; | |
3538 | /* Work around gold/15646. */ | |
3539 | if (!is_static && iter->global_seen) | |
3540 | continue; | |
3541 | if (!is_static) | |
3542 | iter->global_seen = 1; | |
3543 | } | |
da51c347 DE |
3544 | |
3545 | /* Only check the symbol's kind if it has one. */ | |
3546 | if (attrs_valid) | |
3547 | { | |
3548 | switch (iter->domain) | |
3549 | { | |
3550 | case VAR_DOMAIN: | |
3551 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE | |
3552 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION | |
3553 | /* Some types are also in VAR_DOMAIN. */ | |
3554 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
3555 | continue; | |
3556 | break; | |
3557 | case STRUCT_DOMAIN: | |
3558 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
3559 | continue; | |
3560 | break; | |
3561 | case LABEL_DOMAIN: | |
3562 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
3563 | continue; | |
3564 | break; | |
3565 | default: | |
3566 | break; | |
3567 | } | |
3568 | } | |
3569 | ||
3570 | ++iter->next; | |
3571 | return per_cu; | |
3572 | } | |
3573 | ||
3574 | return NULL; | |
3575 | } | |
3576 | ||
3577 | static struct symtab * | |
3578 | dw2_lookup_symbol (struct objfile *objfile, int block_index, | |
3579 | const char *name, domain_enum domain) | |
9291a0cd | 3580 | { |
da51c347 | 3581 | struct symtab *stab_best = NULL; |
156942c7 DE |
3582 | struct mapped_index *index; |
3583 | ||
9291a0cd TT |
3584 | dw2_setup (objfile); |
3585 | ||
156942c7 DE |
3586 | index = dwarf2_per_objfile->index_table; |
3587 | ||
da51c347 | 3588 | /* index is NULL if OBJF_READNOW. */ |
156942c7 | 3589 | if (index) |
9291a0cd | 3590 | { |
da51c347 DE |
3591 | struct dw2_symtab_iterator iter; |
3592 | struct dwarf2_per_cu_data *per_cu; | |
3593 | ||
3594 | dw2_symtab_iter_init (&iter, index, 1, block_index, domain, name); | |
9291a0cd | 3595 | |
da51c347 | 3596 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) |
9291a0cd | 3597 | { |
da51c347 DE |
3598 | struct symbol *sym = NULL; |
3599 | struct symtab *stab = dw2_instantiate_symtab (per_cu); | |
3600 | ||
3601 | /* Some caution must be observed with overloaded functions | |
3602 | and methods, since the index will not contain any overload | |
3603 | information (but NAME might contain it). */ | |
3604 | if (stab->primary) | |
9291a0cd | 3605 | { |
da51c347 DE |
3606 | struct blockvector *bv = BLOCKVECTOR (stab); |
3607 | struct block *block = BLOCKVECTOR_BLOCK (bv, block_index); | |
156942c7 | 3608 | |
da51c347 DE |
3609 | sym = lookup_block_symbol (block, name, domain); |
3610 | } | |
1fd400ff | 3611 | |
da51c347 DE |
3612 | if (sym && strcmp_iw (SYMBOL_SEARCH_NAME (sym), name) == 0) |
3613 | { | |
3614 | if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym))) | |
3615 | return stab; | |
3616 | ||
3617 | stab_best = stab; | |
9291a0cd | 3618 | } |
da51c347 DE |
3619 | |
3620 | /* Keep looking through other CUs. */ | |
9291a0cd TT |
3621 | } |
3622 | } | |
9291a0cd | 3623 | |
da51c347 | 3624 | return stab_best; |
9291a0cd TT |
3625 | } |
3626 | ||
3627 | static void | |
3628 | dw2_print_stats (struct objfile *objfile) | |
3629 | { | |
e4a48d9d | 3630 | int i, total, count; |
9291a0cd TT |
3631 | |
3632 | dw2_setup (objfile); | |
e4a48d9d | 3633 | total = dwarf2_per_objfile->n_comp_units + dwarf2_per_objfile->n_type_units; |
9291a0cd | 3634 | count = 0; |
e4a48d9d | 3635 | for (i = 0; i < total; ++i) |
9291a0cd | 3636 | { |
e254ef6a | 3637 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
9291a0cd | 3638 | |
e254ef6a | 3639 | if (!per_cu->v.quick->symtab) |
9291a0cd TT |
3640 | ++count; |
3641 | } | |
e4a48d9d | 3642 | printf_filtered (_(" Number of read CUs: %d\n"), total - count); |
9291a0cd TT |
3643 | printf_filtered (_(" Number of unread CUs: %d\n"), count); |
3644 | } | |
3645 | ||
779bd270 DE |
3646 | /* This dumps minimal information about the index. |
3647 | It is called via "mt print objfiles". | |
3648 | One use is to verify .gdb_index has been loaded by the | |
3649 | gdb.dwarf2/gdb-index.exp testcase. */ | |
3650 | ||
9291a0cd TT |
3651 | static void |
3652 | dw2_dump (struct objfile *objfile) | |
3653 | { | |
779bd270 DE |
3654 | dw2_setup (objfile); |
3655 | gdb_assert (dwarf2_per_objfile->using_index); | |
3656 | printf_filtered (".gdb_index:"); | |
3657 | if (dwarf2_per_objfile->index_table != NULL) | |
3658 | { | |
3659 | printf_filtered (" version %d\n", | |
3660 | dwarf2_per_objfile->index_table->version); | |
3661 | } | |
3662 | else | |
3663 | printf_filtered (" faked for \"readnow\"\n"); | |
3664 | printf_filtered ("\n"); | |
9291a0cd TT |
3665 | } |
3666 | ||
3667 | static void | |
3189cb12 DE |
3668 | dw2_relocate (struct objfile *objfile, |
3669 | const struct section_offsets *new_offsets, | |
3670 | const struct section_offsets *delta) | |
9291a0cd TT |
3671 | { |
3672 | /* There's nothing to relocate here. */ | |
3673 | } | |
3674 | ||
3675 | static void | |
3676 | dw2_expand_symtabs_for_function (struct objfile *objfile, | |
3677 | const char *func_name) | |
3678 | { | |
da51c347 DE |
3679 | struct mapped_index *index; |
3680 | ||
3681 | dw2_setup (objfile); | |
3682 | ||
3683 | index = dwarf2_per_objfile->index_table; | |
3684 | ||
3685 | /* index is NULL if OBJF_READNOW. */ | |
3686 | if (index) | |
3687 | { | |
3688 | struct dw2_symtab_iterator iter; | |
3689 | struct dwarf2_per_cu_data *per_cu; | |
3690 | ||
3691 | /* Note: It doesn't matter what we pass for block_index here. */ | |
3692 | dw2_symtab_iter_init (&iter, index, 0, GLOBAL_BLOCK, VAR_DOMAIN, | |
3693 | func_name); | |
3694 | ||
3695 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) | |
3696 | dw2_instantiate_symtab (per_cu); | |
3697 | } | |
9291a0cd TT |
3698 | } |
3699 | ||
3700 | static void | |
3701 | dw2_expand_all_symtabs (struct objfile *objfile) | |
3702 | { | |
3703 | int i; | |
3704 | ||
3705 | dw2_setup (objfile); | |
1fd400ff TT |
3706 | |
3707 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units | |
d467dd73 | 3708 | + dwarf2_per_objfile->n_type_units); ++i) |
9291a0cd | 3709 | { |
e254ef6a | 3710 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
9291a0cd | 3711 | |
a0f42c21 | 3712 | dw2_instantiate_symtab (per_cu); |
9291a0cd TT |
3713 | } |
3714 | } | |
3715 | ||
3716 | static void | |
652a8996 JK |
3717 | dw2_expand_symtabs_with_fullname (struct objfile *objfile, |
3718 | const char *fullname) | |
9291a0cd TT |
3719 | { |
3720 | int i; | |
3721 | ||
3722 | dw2_setup (objfile); | |
d4637a04 DE |
3723 | |
3724 | /* We don't need to consider type units here. | |
3725 | This is only called for examining code, e.g. expand_line_sal. | |
3726 | There can be an order of magnitude (or more) more type units | |
3727 | than comp units, and we avoid them if we can. */ | |
3728 | ||
3729 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) | |
9291a0cd TT |
3730 | { |
3731 | int j; | |
e254ef6a | 3732 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
7b9f3c50 | 3733 | struct quick_file_names *file_data; |
9291a0cd | 3734 | |
3d7bb9d9 | 3735 | /* We only need to look at symtabs not already expanded. */ |
e254ef6a | 3736 | if (per_cu->v.quick->symtab) |
9291a0cd TT |
3737 | continue; |
3738 | ||
e4a48d9d | 3739 | file_data = dw2_get_file_names (per_cu); |
7b9f3c50 | 3740 | if (file_data == NULL) |
9291a0cd TT |
3741 | continue; |
3742 | ||
7b9f3c50 | 3743 | for (j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 3744 | { |
652a8996 JK |
3745 | const char *this_fullname = file_data->file_names[j]; |
3746 | ||
3747 | if (filename_cmp (this_fullname, fullname) == 0) | |
9291a0cd | 3748 | { |
a0f42c21 | 3749 | dw2_instantiate_symtab (per_cu); |
9291a0cd TT |
3750 | break; |
3751 | } | |
3752 | } | |
3753 | } | |
3754 | } | |
3755 | ||
9291a0cd | 3756 | static void |
ade7ed9e DE |
3757 | dw2_map_matching_symbols (struct objfile *objfile, |
3758 | const char * name, domain_enum namespace, | |
3759 | int global, | |
40658b94 PH |
3760 | int (*callback) (struct block *, |
3761 | struct symbol *, void *), | |
2edb89d3 JK |
3762 | void *data, symbol_compare_ftype *match, |
3763 | symbol_compare_ftype *ordered_compare) | |
9291a0cd | 3764 | { |
40658b94 | 3765 | /* Currently unimplemented; used for Ada. The function can be called if the |
a9e6a4bb JK |
3766 | current language is Ada for a non-Ada objfile using GNU index. As Ada |
3767 | does not look for non-Ada symbols this function should just return. */ | |
9291a0cd TT |
3768 | } |
3769 | ||
3770 | static void | |
f8eba3c6 TT |
3771 | dw2_expand_symtabs_matching |
3772 | (struct objfile *objfile, | |
fbd9ab74 | 3773 | int (*file_matcher) (const char *, void *, int basenames), |
e078317b | 3774 | int (*name_matcher) (const char *, void *), |
f8eba3c6 TT |
3775 | enum search_domain kind, |
3776 | void *data) | |
9291a0cd TT |
3777 | { |
3778 | int i; | |
3779 | offset_type iter; | |
4b5246aa | 3780 | struct mapped_index *index; |
9291a0cd TT |
3781 | |
3782 | dw2_setup (objfile); | |
ae2de4f8 DE |
3783 | |
3784 | /* index_table is NULL if OBJF_READNOW. */ | |
9291a0cd TT |
3785 | if (!dwarf2_per_objfile->index_table) |
3786 | return; | |
4b5246aa | 3787 | index = dwarf2_per_objfile->index_table; |
9291a0cd | 3788 | |
7b08b9eb | 3789 | if (file_matcher != NULL) |
24c79950 TT |
3790 | { |
3791 | struct cleanup *cleanup; | |
3792 | htab_t visited_found, visited_not_found; | |
3793 | ||
3794 | visited_found = htab_create_alloc (10, | |
3795 | htab_hash_pointer, htab_eq_pointer, | |
3796 | NULL, xcalloc, xfree); | |
3797 | cleanup = make_cleanup_htab_delete (visited_found); | |
3798 | visited_not_found = htab_create_alloc (10, | |
3799 | htab_hash_pointer, htab_eq_pointer, | |
3800 | NULL, xcalloc, xfree); | |
3801 | make_cleanup_htab_delete (visited_not_found); | |
3802 | ||
848e3e78 DE |
3803 | /* The rule is CUs specify all the files, including those used by |
3804 | any TU, so there's no need to scan TUs here. */ | |
3805 | ||
3806 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) | |
24c79950 TT |
3807 | { |
3808 | int j; | |
f4dc4d17 | 3809 | struct dwarf2_per_cu_data *per_cu = dw2_get_primary_cu (i); |
24c79950 TT |
3810 | struct quick_file_names *file_data; |
3811 | void **slot; | |
7b08b9eb | 3812 | |
24c79950 | 3813 | per_cu->v.quick->mark = 0; |
3d7bb9d9 | 3814 | |
24c79950 TT |
3815 | /* We only need to look at symtabs not already expanded. */ |
3816 | if (per_cu->v.quick->symtab) | |
3817 | continue; | |
7b08b9eb | 3818 | |
e4a48d9d | 3819 | file_data = dw2_get_file_names (per_cu); |
24c79950 TT |
3820 | if (file_data == NULL) |
3821 | continue; | |
7b08b9eb | 3822 | |
24c79950 TT |
3823 | if (htab_find (visited_not_found, file_data) != NULL) |
3824 | continue; | |
3825 | else if (htab_find (visited_found, file_data) != NULL) | |
3826 | { | |
3827 | per_cu->v.quick->mark = 1; | |
3828 | continue; | |
3829 | } | |
3830 | ||
3831 | for (j = 0; j < file_data->num_file_names; ++j) | |
3832 | { | |
da235a7c JK |
3833 | const char *this_real_name; |
3834 | ||
fbd9ab74 | 3835 | if (file_matcher (file_data->file_names[j], data, 0)) |
24c79950 TT |
3836 | { |
3837 | per_cu->v.quick->mark = 1; | |
3838 | break; | |
3839 | } | |
da235a7c JK |
3840 | |
3841 | /* Before we invoke realpath, which can get expensive when many | |
3842 | files are involved, do a quick comparison of the basenames. */ | |
3843 | if (!basenames_may_differ | |
3844 | && !file_matcher (lbasename (file_data->file_names[j]), | |
3845 | data, 1)) | |
3846 | continue; | |
3847 | ||
3848 | this_real_name = dw2_get_real_path (objfile, file_data, j); | |
3849 | if (file_matcher (this_real_name, data, 0)) | |
3850 | { | |
3851 | per_cu->v.quick->mark = 1; | |
3852 | break; | |
3853 | } | |
24c79950 TT |
3854 | } |
3855 | ||
3856 | slot = htab_find_slot (per_cu->v.quick->mark | |
3857 | ? visited_found | |
3858 | : visited_not_found, | |
3859 | file_data, INSERT); | |
3860 | *slot = file_data; | |
3861 | } | |
3862 | ||
3863 | do_cleanups (cleanup); | |
3864 | } | |
9291a0cd | 3865 | |
3876f04e | 3866 | for (iter = 0; iter < index->symbol_table_slots; ++iter) |
9291a0cd TT |
3867 | { |
3868 | offset_type idx = 2 * iter; | |
3869 | const char *name; | |
3870 | offset_type *vec, vec_len, vec_idx; | |
8943b874 | 3871 | int global_seen = 0; |
9291a0cd | 3872 | |
3876f04e | 3873 | if (index->symbol_table[idx] == 0 && index->symbol_table[idx + 1] == 0) |
9291a0cd TT |
3874 | continue; |
3875 | ||
3876f04e | 3876 | name = index->constant_pool + MAYBE_SWAP (index->symbol_table[idx]); |
9291a0cd | 3877 | |
e078317b | 3878 | if (! (*name_matcher) (name, data)) |
9291a0cd TT |
3879 | continue; |
3880 | ||
3881 | /* The name was matched, now expand corresponding CUs that were | |
3882 | marked. */ | |
4b5246aa | 3883 | vec = (offset_type *) (index->constant_pool |
3876f04e | 3884 | + MAYBE_SWAP (index->symbol_table[idx + 1])); |
9291a0cd TT |
3885 | vec_len = MAYBE_SWAP (vec[0]); |
3886 | for (vec_idx = 0; vec_idx < vec_len; ++vec_idx) | |
3887 | { | |
e254ef6a | 3888 | struct dwarf2_per_cu_data *per_cu; |
156942c7 | 3889 | offset_type cu_index_and_attrs = MAYBE_SWAP (vec[vec_idx + 1]); |
8943b874 DE |
3890 | /* This value is only valid for index versions >= 7. */ |
3891 | int is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu_index_and_attrs); | |
156942c7 DE |
3892 | gdb_index_symbol_kind symbol_kind = |
3893 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
3894 | int cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
3190f0c6 DE |
3895 | /* Only check the symbol attributes if they're present. |
3896 | Indices prior to version 7 don't record them, | |
3897 | and indices >= 7 may elide them for certain symbols | |
3898 | (gold does this). */ | |
3899 | int attrs_valid = | |
3900 | (index->version >= 7 | |
3901 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE); | |
3902 | ||
8943b874 DE |
3903 | /* Work around gold/15646. */ |
3904 | if (attrs_valid) | |
3905 | { | |
3906 | if (!is_static && global_seen) | |
3907 | continue; | |
3908 | if (!is_static) | |
3909 | global_seen = 1; | |
3910 | } | |
3911 | ||
3190f0c6 DE |
3912 | /* Only check the symbol's kind if it has one. */ |
3913 | if (attrs_valid) | |
156942c7 DE |
3914 | { |
3915 | switch (kind) | |
3916 | { | |
3917 | case VARIABLES_DOMAIN: | |
3918 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE) | |
3919 | continue; | |
3920 | break; | |
3921 | case FUNCTIONS_DOMAIN: | |
3922 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION) | |
3923 | continue; | |
3924 | break; | |
3925 | case TYPES_DOMAIN: | |
3926 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
3927 | continue; | |
3928 | break; | |
3929 | default: | |
3930 | break; | |
3931 | } | |
3932 | } | |
3933 | ||
3190f0c6 DE |
3934 | /* Don't crash on bad data. */ |
3935 | if (cu_index >= (dwarf2_per_objfile->n_comp_units | |
3936 | + dwarf2_per_objfile->n_type_units)) | |
3937 | { | |
3938 | complaint (&symfile_complaints, | |
3939 | _(".gdb_index entry has bad CU index" | |
4262abfb | 3940 | " [in module %s]"), objfile_name (objfile)); |
3190f0c6 DE |
3941 | continue; |
3942 | } | |
3943 | ||
156942c7 | 3944 | per_cu = dw2_get_cu (cu_index); |
7b08b9eb | 3945 | if (file_matcher == NULL || per_cu->v.quick->mark) |
a0f42c21 | 3946 | dw2_instantiate_symtab (per_cu); |
9291a0cd TT |
3947 | } |
3948 | } | |
3949 | } | |
3950 | ||
9703b513 TT |
3951 | /* A helper for dw2_find_pc_sect_symtab which finds the most specific |
3952 | symtab. */ | |
3953 | ||
3954 | static struct symtab * | |
3955 | recursively_find_pc_sect_symtab (struct symtab *symtab, CORE_ADDR pc) | |
3956 | { | |
3957 | int i; | |
3958 | ||
3959 | if (BLOCKVECTOR (symtab) != NULL | |
3960 | && blockvector_contains_pc (BLOCKVECTOR (symtab), pc)) | |
3961 | return symtab; | |
3962 | ||
a3ec0bb1 DE |
3963 | if (symtab->includes == NULL) |
3964 | return NULL; | |
3965 | ||
9703b513 TT |
3966 | for (i = 0; symtab->includes[i]; ++i) |
3967 | { | |
a3ec0bb1 | 3968 | struct symtab *s = symtab->includes[i]; |
9703b513 TT |
3969 | |
3970 | s = recursively_find_pc_sect_symtab (s, pc); | |
3971 | if (s != NULL) | |
3972 | return s; | |
3973 | } | |
3974 | ||
3975 | return NULL; | |
3976 | } | |
3977 | ||
9291a0cd TT |
3978 | static struct symtab * |
3979 | dw2_find_pc_sect_symtab (struct objfile *objfile, | |
3980 | struct minimal_symbol *msymbol, | |
3981 | CORE_ADDR pc, | |
3982 | struct obj_section *section, | |
3983 | int warn_if_readin) | |
3984 | { | |
3985 | struct dwarf2_per_cu_data *data; | |
9703b513 | 3986 | struct symtab *result; |
9291a0cd TT |
3987 | |
3988 | dw2_setup (objfile); | |
3989 | ||
3990 | if (!objfile->psymtabs_addrmap) | |
3991 | return NULL; | |
3992 | ||
3993 | data = addrmap_find (objfile->psymtabs_addrmap, pc); | |
3994 | if (!data) | |
3995 | return NULL; | |
3996 | ||
3997 | if (warn_if_readin && data->v.quick->symtab) | |
abebb8b0 | 3998 | warning (_("(Internal error: pc %s in read in CU, but not in symtab.)"), |
9291a0cd TT |
3999 | paddress (get_objfile_arch (objfile), pc)); |
4000 | ||
9703b513 TT |
4001 | result = recursively_find_pc_sect_symtab (dw2_instantiate_symtab (data), pc); |
4002 | gdb_assert (result != NULL); | |
4003 | return result; | |
9291a0cd TT |
4004 | } |
4005 | ||
9291a0cd | 4006 | static void |
44b13c5a | 4007 | dw2_map_symbol_filenames (struct objfile *objfile, symbol_filename_ftype *fun, |
74e2f255 | 4008 | void *data, int need_fullname) |
9291a0cd TT |
4009 | { |
4010 | int i; | |
24c79950 TT |
4011 | struct cleanup *cleanup; |
4012 | htab_t visited = htab_create_alloc (10, htab_hash_pointer, htab_eq_pointer, | |
4013 | NULL, xcalloc, xfree); | |
9291a0cd | 4014 | |
24c79950 | 4015 | cleanup = make_cleanup_htab_delete (visited); |
9291a0cd | 4016 | dw2_setup (objfile); |
ae2de4f8 | 4017 | |
848e3e78 DE |
4018 | /* The rule is CUs specify all the files, including those used by |
4019 | any TU, so there's no need to scan TUs here. | |
4020 | We can ignore file names coming from already-expanded CUs. */ | |
f4dc4d17 | 4021 | |
848e3e78 | 4022 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
24c79950 TT |
4023 | { |
4024 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); | |
4025 | ||
4026 | if (per_cu->v.quick->symtab) | |
4027 | { | |
4028 | void **slot = htab_find_slot (visited, per_cu->v.quick->file_names, | |
4029 | INSERT); | |
4030 | ||
4031 | *slot = per_cu->v.quick->file_names; | |
4032 | } | |
4033 | } | |
4034 | ||
848e3e78 | 4035 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
9291a0cd TT |
4036 | { |
4037 | int j; | |
f4dc4d17 | 4038 | struct dwarf2_per_cu_data *per_cu = dw2_get_primary_cu (i); |
7b9f3c50 | 4039 | struct quick_file_names *file_data; |
24c79950 | 4040 | void **slot; |
9291a0cd | 4041 | |
3d7bb9d9 | 4042 | /* We only need to look at symtabs not already expanded. */ |
e254ef6a | 4043 | if (per_cu->v.quick->symtab) |
9291a0cd TT |
4044 | continue; |
4045 | ||
e4a48d9d | 4046 | file_data = dw2_get_file_names (per_cu); |
7b9f3c50 | 4047 | if (file_data == NULL) |
9291a0cd TT |
4048 | continue; |
4049 | ||
24c79950 TT |
4050 | slot = htab_find_slot (visited, file_data, INSERT); |
4051 | if (*slot) | |
4052 | { | |
4053 | /* Already visited. */ | |
4054 | continue; | |
4055 | } | |
4056 | *slot = file_data; | |
4057 | ||
7b9f3c50 | 4058 | for (j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 4059 | { |
74e2f255 DE |
4060 | const char *this_real_name; |
4061 | ||
4062 | if (need_fullname) | |
4063 | this_real_name = dw2_get_real_path (objfile, file_data, j); | |
4064 | else | |
4065 | this_real_name = NULL; | |
7b9f3c50 | 4066 | (*fun) (file_data->file_names[j], this_real_name, data); |
9291a0cd TT |
4067 | } |
4068 | } | |
24c79950 TT |
4069 | |
4070 | do_cleanups (cleanup); | |
9291a0cd TT |
4071 | } |
4072 | ||
4073 | static int | |
4074 | dw2_has_symbols (struct objfile *objfile) | |
4075 | { | |
4076 | return 1; | |
4077 | } | |
4078 | ||
4079 | const struct quick_symbol_functions dwarf2_gdb_index_functions = | |
4080 | { | |
4081 | dw2_has_symbols, | |
4082 | dw2_find_last_source_symtab, | |
4083 | dw2_forget_cached_source_info, | |
f8eba3c6 | 4084 | dw2_map_symtabs_matching_filename, |
9291a0cd | 4085 | dw2_lookup_symbol, |
9291a0cd TT |
4086 | dw2_print_stats, |
4087 | dw2_dump, | |
4088 | dw2_relocate, | |
4089 | dw2_expand_symtabs_for_function, | |
4090 | dw2_expand_all_symtabs, | |
652a8996 | 4091 | dw2_expand_symtabs_with_fullname, |
40658b94 | 4092 | dw2_map_matching_symbols, |
9291a0cd TT |
4093 | dw2_expand_symtabs_matching, |
4094 | dw2_find_pc_sect_symtab, | |
9291a0cd TT |
4095 | dw2_map_symbol_filenames |
4096 | }; | |
4097 | ||
4098 | /* Initialize for reading DWARF for this objfile. Return 0 if this | |
4099 | file will use psymtabs, or 1 if using the GNU index. */ | |
4100 | ||
4101 | int | |
4102 | dwarf2_initialize_objfile (struct objfile *objfile) | |
4103 | { | |
4104 | /* If we're about to read full symbols, don't bother with the | |
4105 | indices. In this case we also don't care if some other debug | |
4106 | format is making psymtabs, because they are all about to be | |
4107 | expanded anyway. */ | |
4108 | if ((objfile->flags & OBJF_READNOW)) | |
4109 | { | |
4110 | int i; | |
4111 | ||
4112 | dwarf2_per_objfile->using_index = 1; | |
4113 | create_all_comp_units (objfile); | |
0e50663e | 4114 | create_all_type_units (objfile); |
7b9f3c50 DE |
4115 | dwarf2_per_objfile->quick_file_names_table = |
4116 | create_quick_file_names_table (dwarf2_per_objfile->n_comp_units); | |
9291a0cd | 4117 | |
1fd400ff | 4118 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units |
d467dd73 | 4119 | + dwarf2_per_objfile->n_type_units); ++i) |
9291a0cd | 4120 | { |
e254ef6a | 4121 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
9291a0cd | 4122 | |
e254ef6a DE |
4123 | per_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
4124 | struct dwarf2_per_cu_quick_data); | |
9291a0cd TT |
4125 | } |
4126 | ||
4127 | /* Return 1 so that gdb sees the "quick" functions. However, | |
4128 | these functions will be no-ops because we will have expanded | |
4129 | all symtabs. */ | |
4130 | return 1; | |
4131 | } | |
4132 | ||
4133 | if (dwarf2_read_index (objfile)) | |
4134 | return 1; | |
4135 | ||
9291a0cd TT |
4136 | return 0; |
4137 | } | |
4138 | ||
4139 | \f | |
4140 | ||
dce234bc PP |
4141 | /* Build a partial symbol table. */ |
4142 | ||
4143 | void | |
f29dff0a | 4144 | dwarf2_build_psymtabs (struct objfile *objfile) |
dce234bc | 4145 | { |
c9bf0622 TT |
4146 | volatile struct gdb_exception except; |
4147 | ||
f29dff0a | 4148 | if (objfile->global_psymbols.size == 0 && objfile->static_psymbols.size == 0) |
c906108c SS |
4149 | { |
4150 | init_psymbol_list (objfile, 1024); | |
4151 | } | |
4152 | ||
c9bf0622 TT |
4153 | TRY_CATCH (except, RETURN_MASK_ERROR) |
4154 | { | |
4155 | /* This isn't really ideal: all the data we allocate on the | |
4156 | objfile's obstack is still uselessly kept around. However, | |
4157 | freeing it seems unsafe. */ | |
4158 | struct cleanup *cleanups = make_cleanup_discard_psymtabs (objfile); | |
4159 | ||
4160 | dwarf2_build_psymtabs_hard (objfile); | |
4161 | discard_cleanups (cleanups); | |
4162 | } | |
4163 | if (except.reason < 0) | |
4164 | exception_print (gdb_stderr, except); | |
c906108c | 4165 | } |
c906108c | 4166 | |
1ce1cefd DE |
4167 | /* Return the total length of the CU described by HEADER. */ |
4168 | ||
4169 | static unsigned int | |
4170 | get_cu_length (const struct comp_unit_head *header) | |
4171 | { | |
4172 | return header->initial_length_size + header->length; | |
4173 | } | |
4174 | ||
45452591 DE |
4175 | /* Return TRUE if OFFSET is within CU_HEADER. */ |
4176 | ||
4177 | static inline int | |
b64f50a1 | 4178 | offset_in_cu_p (const struct comp_unit_head *cu_header, sect_offset offset) |
45452591 | 4179 | { |
b64f50a1 | 4180 | sect_offset bottom = { cu_header->offset.sect_off }; |
1ce1cefd | 4181 | sect_offset top = { cu_header->offset.sect_off + get_cu_length (cu_header) }; |
9a619af0 | 4182 | |
b64f50a1 | 4183 | return (offset.sect_off >= bottom.sect_off && offset.sect_off < top.sect_off); |
45452591 DE |
4184 | } |
4185 | ||
3b80fe9b DE |
4186 | /* Find the base address of the compilation unit for range lists and |
4187 | location lists. It will normally be specified by DW_AT_low_pc. | |
4188 | In DWARF-3 draft 4, the base address could be overridden by | |
4189 | DW_AT_entry_pc. It's been removed, but GCC still uses this for | |
4190 | compilation units with discontinuous ranges. */ | |
4191 | ||
4192 | static void | |
4193 | dwarf2_find_base_address (struct die_info *die, struct dwarf2_cu *cu) | |
4194 | { | |
4195 | struct attribute *attr; | |
4196 | ||
4197 | cu->base_known = 0; | |
4198 | cu->base_address = 0; | |
4199 | ||
4200 | attr = dwarf2_attr (die, DW_AT_entry_pc, cu); | |
4201 | if (attr) | |
4202 | { | |
4203 | cu->base_address = DW_ADDR (attr); | |
4204 | cu->base_known = 1; | |
4205 | } | |
4206 | else | |
4207 | { | |
4208 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
4209 | if (attr) | |
4210 | { | |
4211 | cu->base_address = DW_ADDR (attr); | |
4212 | cu->base_known = 1; | |
4213 | } | |
4214 | } | |
4215 | } | |
4216 | ||
93311388 DE |
4217 | /* Read in the comp unit header information from the debug_info at info_ptr. |
4218 | NOTE: This leaves members offset, first_die_offset to be filled in | |
4219 | by the caller. */ | |
107d2387 | 4220 | |
d521ce57 | 4221 | static const gdb_byte * |
107d2387 | 4222 | read_comp_unit_head (struct comp_unit_head *cu_header, |
d521ce57 | 4223 | const gdb_byte *info_ptr, bfd *abfd) |
107d2387 AC |
4224 | { |
4225 | int signed_addr; | |
891d2f0b | 4226 | unsigned int bytes_read; |
c764a876 DE |
4227 | |
4228 | cu_header->length = read_initial_length (abfd, info_ptr, &bytes_read); | |
4229 | cu_header->initial_length_size = bytes_read; | |
4230 | cu_header->offset_size = (bytes_read == 4) ? 4 : 8; | |
613e1657 | 4231 | info_ptr += bytes_read; |
107d2387 AC |
4232 | cu_header->version = read_2_bytes (abfd, info_ptr); |
4233 | info_ptr += 2; | |
b64f50a1 JK |
4234 | cu_header->abbrev_offset.sect_off = read_offset (abfd, info_ptr, cu_header, |
4235 | &bytes_read); | |
613e1657 | 4236 | info_ptr += bytes_read; |
107d2387 AC |
4237 | cu_header->addr_size = read_1_byte (abfd, info_ptr); |
4238 | info_ptr += 1; | |
4239 | signed_addr = bfd_get_sign_extend_vma (abfd); | |
4240 | if (signed_addr < 0) | |
8e65ff28 | 4241 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4242 | _("read_comp_unit_head: dwarf from non elf file")); |
107d2387 | 4243 | cu_header->signed_addr_p = signed_addr; |
c764a876 | 4244 | |
107d2387 AC |
4245 | return info_ptr; |
4246 | } | |
4247 | ||
36586728 TT |
4248 | /* Helper function that returns the proper abbrev section for |
4249 | THIS_CU. */ | |
4250 | ||
4251 | static struct dwarf2_section_info * | |
4252 | get_abbrev_section_for_cu (struct dwarf2_per_cu_data *this_cu) | |
4253 | { | |
4254 | struct dwarf2_section_info *abbrev; | |
4255 | ||
4256 | if (this_cu->is_dwz) | |
4257 | abbrev = &dwarf2_get_dwz_file ()->abbrev; | |
4258 | else | |
4259 | abbrev = &dwarf2_per_objfile->abbrev; | |
4260 | ||
4261 | return abbrev; | |
4262 | } | |
4263 | ||
9ff913ba DE |
4264 | /* Subroutine of read_and_check_comp_unit_head and |
4265 | read_and_check_type_unit_head to simplify them. | |
4266 | Perform various error checking on the header. */ | |
4267 | ||
4268 | static void | |
4269 | error_check_comp_unit_head (struct comp_unit_head *header, | |
4bdcc0c1 DE |
4270 | struct dwarf2_section_info *section, |
4271 | struct dwarf2_section_info *abbrev_section) | |
9ff913ba | 4272 | { |
a32a8923 DE |
4273 | bfd *abfd = get_section_bfd_owner (section); |
4274 | const char *filename = get_section_file_name (section); | |
9ff913ba DE |
4275 | |
4276 | if (header->version != 2 && header->version != 3 && header->version != 4) | |
4277 | error (_("Dwarf Error: wrong version in compilation unit header " | |
4278 | "(is %d, should be 2, 3, or 4) [in module %s]"), header->version, | |
4279 | filename); | |
4280 | ||
b64f50a1 | 4281 | if (header->abbrev_offset.sect_off |
36586728 | 4282 | >= dwarf2_section_size (dwarf2_per_objfile->objfile, abbrev_section)) |
9ff913ba DE |
4283 | error (_("Dwarf Error: bad offset (0x%lx) in compilation unit header " |
4284 | "(offset 0x%lx + 6) [in module %s]"), | |
b64f50a1 | 4285 | (long) header->abbrev_offset.sect_off, (long) header->offset.sect_off, |
9ff913ba DE |
4286 | filename); |
4287 | ||
4288 | /* Cast to unsigned long to use 64-bit arithmetic when possible to | |
4289 | avoid potential 32-bit overflow. */ | |
1ce1cefd | 4290 | if (((unsigned long) header->offset.sect_off + get_cu_length (header)) |
9ff913ba DE |
4291 | > section->size) |
4292 | error (_("Dwarf Error: bad length (0x%lx) in compilation unit header " | |
4293 | "(offset 0x%lx + 0) [in module %s]"), | |
b64f50a1 | 4294 | (long) header->length, (long) header->offset.sect_off, |
9ff913ba DE |
4295 | filename); |
4296 | } | |
4297 | ||
4298 | /* Read in a CU/TU header and perform some basic error checking. | |
4299 | The contents of the header are stored in HEADER. | |
4300 | The result is a pointer to the start of the first DIE. */ | |
adabb602 | 4301 | |
d521ce57 | 4302 | static const gdb_byte * |
9ff913ba DE |
4303 | read_and_check_comp_unit_head (struct comp_unit_head *header, |
4304 | struct dwarf2_section_info *section, | |
4bdcc0c1 | 4305 | struct dwarf2_section_info *abbrev_section, |
d521ce57 | 4306 | const gdb_byte *info_ptr, |
9ff913ba | 4307 | int is_debug_types_section) |
72bf9492 | 4308 | { |
d521ce57 | 4309 | const gdb_byte *beg_of_comp_unit = info_ptr; |
a32a8923 | 4310 | bfd *abfd = get_section_bfd_owner (section); |
72bf9492 | 4311 | |
b64f50a1 | 4312 | header->offset.sect_off = beg_of_comp_unit - section->buffer; |
adabb602 | 4313 | |
72bf9492 DJ |
4314 | info_ptr = read_comp_unit_head (header, info_ptr, abfd); |
4315 | ||
460c1c54 CC |
4316 | /* If we're reading a type unit, skip over the signature and |
4317 | type_offset fields. */ | |
b0df02fd | 4318 | if (is_debug_types_section) |
460c1c54 CC |
4319 | info_ptr += 8 /*signature*/ + header->offset_size; |
4320 | ||
b64f50a1 | 4321 | header->first_die_offset.cu_off = info_ptr - beg_of_comp_unit; |
adabb602 | 4322 | |
4bdcc0c1 | 4323 | error_check_comp_unit_head (header, section, abbrev_section); |
72bf9492 DJ |
4324 | |
4325 | return info_ptr; | |
4326 | } | |
4327 | ||
348e048f DE |
4328 | /* Read in the types comp unit header information from .debug_types entry at |
4329 | types_ptr. The result is a pointer to one past the end of the header. */ | |
4330 | ||
d521ce57 | 4331 | static const gdb_byte * |
9ff913ba DE |
4332 | read_and_check_type_unit_head (struct comp_unit_head *header, |
4333 | struct dwarf2_section_info *section, | |
4bdcc0c1 | 4334 | struct dwarf2_section_info *abbrev_section, |
d521ce57 | 4335 | const gdb_byte *info_ptr, |
dee91e82 DE |
4336 | ULONGEST *signature, |
4337 | cu_offset *type_offset_in_tu) | |
348e048f | 4338 | { |
d521ce57 | 4339 | const gdb_byte *beg_of_comp_unit = info_ptr; |
a32a8923 | 4340 | bfd *abfd = get_section_bfd_owner (section); |
348e048f | 4341 | |
b64f50a1 | 4342 | header->offset.sect_off = beg_of_comp_unit - section->buffer; |
348e048f | 4343 | |
9ff913ba | 4344 | info_ptr = read_comp_unit_head (header, info_ptr, abfd); |
348e048f | 4345 | |
9ff913ba DE |
4346 | /* If we're reading a type unit, skip over the signature and |
4347 | type_offset fields. */ | |
4348 | if (signature != NULL) | |
4349 | *signature = read_8_bytes (abfd, info_ptr); | |
4350 | info_ptr += 8; | |
dee91e82 DE |
4351 | if (type_offset_in_tu != NULL) |
4352 | type_offset_in_tu->cu_off = read_offset_1 (abfd, info_ptr, | |
4353 | header->offset_size); | |
9ff913ba DE |
4354 | info_ptr += header->offset_size; |
4355 | ||
b64f50a1 | 4356 | header->first_die_offset.cu_off = info_ptr - beg_of_comp_unit; |
348e048f | 4357 | |
4bdcc0c1 | 4358 | error_check_comp_unit_head (header, section, abbrev_section); |
9ff913ba DE |
4359 | |
4360 | return info_ptr; | |
348e048f DE |
4361 | } |
4362 | ||
f4dc4d17 DE |
4363 | /* Fetch the abbreviation table offset from a comp or type unit header. */ |
4364 | ||
4365 | static sect_offset | |
4366 | read_abbrev_offset (struct dwarf2_section_info *section, | |
4367 | sect_offset offset) | |
4368 | { | |
a32a8923 | 4369 | bfd *abfd = get_section_bfd_owner (section); |
d521ce57 | 4370 | const gdb_byte *info_ptr; |
f4dc4d17 DE |
4371 | unsigned int length, initial_length_size, offset_size; |
4372 | sect_offset abbrev_offset; | |
4373 | ||
4374 | dwarf2_read_section (dwarf2_per_objfile->objfile, section); | |
4375 | info_ptr = section->buffer + offset.sect_off; | |
4376 | length = read_initial_length (abfd, info_ptr, &initial_length_size); | |
4377 | offset_size = initial_length_size == 4 ? 4 : 8; | |
4378 | info_ptr += initial_length_size + 2 /*version*/; | |
4379 | abbrev_offset.sect_off = read_offset_1 (abfd, info_ptr, offset_size); | |
4380 | return abbrev_offset; | |
4381 | } | |
4382 | ||
aaa75496 JB |
4383 | /* Allocate a new partial symtab for file named NAME and mark this new |
4384 | partial symtab as being an include of PST. */ | |
4385 | ||
4386 | static void | |
d521ce57 | 4387 | dwarf2_create_include_psymtab (const char *name, struct partial_symtab *pst, |
aaa75496 JB |
4388 | struct objfile *objfile) |
4389 | { | |
4390 | struct partial_symtab *subpst = allocate_psymtab (name, objfile); | |
4391 | ||
fbd9ab74 JK |
4392 | if (!IS_ABSOLUTE_PATH (subpst->filename)) |
4393 | { | |
4394 | /* It shares objfile->objfile_obstack. */ | |
4395 | subpst->dirname = pst->dirname; | |
4396 | } | |
4397 | ||
aaa75496 JB |
4398 | subpst->section_offsets = pst->section_offsets; |
4399 | subpst->textlow = 0; | |
4400 | subpst->texthigh = 0; | |
4401 | ||
4402 | subpst->dependencies = (struct partial_symtab **) | |
4403 | obstack_alloc (&objfile->objfile_obstack, | |
4404 | sizeof (struct partial_symtab *)); | |
4405 | subpst->dependencies[0] = pst; | |
4406 | subpst->number_of_dependencies = 1; | |
4407 | ||
4408 | subpst->globals_offset = 0; | |
4409 | subpst->n_global_syms = 0; | |
4410 | subpst->statics_offset = 0; | |
4411 | subpst->n_static_syms = 0; | |
4412 | subpst->symtab = NULL; | |
4413 | subpst->read_symtab = pst->read_symtab; | |
4414 | subpst->readin = 0; | |
4415 | ||
4416 | /* No private part is necessary for include psymtabs. This property | |
4417 | can be used to differentiate between such include psymtabs and | |
10b3939b | 4418 | the regular ones. */ |
58a9656e | 4419 | subpst->read_symtab_private = NULL; |
aaa75496 JB |
4420 | } |
4421 | ||
4422 | /* Read the Line Number Program data and extract the list of files | |
4423 | included by the source file represented by PST. Build an include | |
d85a05f0 | 4424 | partial symtab for each of these included files. */ |
aaa75496 JB |
4425 | |
4426 | static void | |
4427 | dwarf2_build_include_psymtabs (struct dwarf2_cu *cu, | |
dee91e82 DE |
4428 | struct die_info *die, |
4429 | struct partial_symtab *pst) | |
aaa75496 | 4430 | { |
d85a05f0 DJ |
4431 | struct line_header *lh = NULL; |
4432 | struct attribute *attr; | |
aaa75496 | 4433 | |
d85a05f0 DJ |
4434 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
4435 | if (attr) | |
3019eac3 | 4436 | lh = dwarf_decode_line_header (DW_UNSND (attr), cu); |
aaa75496 JB |
4437 | if (lh == NULL) |
4438 | return; /* No linetable, so no includes. */ | |
4439 | ||
c6da4cef | 4440 | /* NOTE: pst->dirname is DW_AT_comp_dir (if present). */ |
f3f5162e | 4441 | dwarf_decode_lines (lh, pst->dirname, cu, pst, 1); |
aaa75496 JB |
4442 | |
4443 | free_line_header (lh); | |
4444 | } | |
4445 | ||
348e048f | 4446 | static hashval_t |
52dc124a | 4447 | hash_signatured_type (const void *item) |
348e048f | 4448 | { |
52dc124a | 4449 | const struct signatured_type *sig_type = item; |
9a619af0 | 4450 | |
348e048f | 4451 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
52dc124a | 4452 | return sig_type->signature; |
348e048f DE |
4453 | } |
4454 | ||
4455 | static int | |
52dc124a | 4456 | eq_signatured_type (const void *item_lhs, const void *item_rhs) |
348e048f DE |
4457 | { |
4458 | const struct signatured_type *lhs = item_lhs; | |
4459 | const struct signatured_type *rhs = item_rhs; | |
9a619af0 | 4460 | |
348e048f DE |
4461 | return lhs->signature == rhs->signature; |
4462 | } | |
4463 | ||
1fd400ff TT |
4464 | /* Allocate a hash table for signatured types. */ |
4465 | ||
4466 | static htab_t | |
673bfd45 | 4467 | allocate_signatured_type_table (struct objfile *objfile) |
1fd400ff TT |
4468 | { |
4469 | return htab_create_alloc_ex (41, | |
52dc124a DE |
4470 | hash_signatured_type, |
4471 | eq_signatured_type, | |
1fd400ff TT |
4472 | NULL, |
4473 | &objfile->objfile_obstack, | |
4474 | hashtab_obstack_allocate, | |
4475 | dummy_obstack_deallocate); | |
4476 | } | |
4477 | ||
d467dd73 | 4478 | /* A helper function to add a signatured type CU to a table. */ |
1fd400ff TT |
4479 | |
4480 | static int | |
d467dd73 | 4481 | add_signatured_type_cu_to_table (void **slot, void *datum) |
1fd400ff TT |
4482 | { |
4483 | struct signatured_type *sigt = *slot; | |
b4dd5633 | 4484 | struct signatured_type ***datap = datum; |
1fd400ff | 4485 | |
b4dd5633 | 4486 | **datap = sigt; |
1fd400ff TT |
4487 | ++*datap; |
4488 | ||
4489 | return 1; | |
4490 | } | |
4491 | ||
c88ee1f0 DE |
4492 | /* Create the hash table of all entries in the .debug_types |
4493 | (or .debug_types.dwo) section(s). | |
4494 | If reading a DWO file, then DWO_FILE is a pointer to the DWO file object, | |
4495 | otherwise it is NULL. | |
4496 | ||
4497 | The result is a pointer to the hash table or NULL if there are no types. | |
4498 | ||
4499 | Note: This function processes DWO files only, not DWP files. */ | |
348e048f | 4500 | |
3019eac3 DE |
4501 | static htab_t |
4502 | create_debug_types_hash_table (struct dwo_file *dwo_file, | |
4503 | VEC (dwarf2_section_info_def) *types) | |
348e048f | 4504 | { |
3019eac3 | 4505 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8b70b953 | 4506 | htab_t types_htab = NULL; |
8b70b953 TT |
4507 | int ix; |
4508 | struct dwarf2_section_info *section; | |
4bdcc0c1 | 4509 | struct dwarf2_section_info *abbrev_section; |
348e048f | 4510 | |
3019eac3 DE |
4511 | if (VEC_empty (dwarf2_section_info_def, types)) |
4512 | return NULL; | |
348e048f | 4513 | |
4bdcc0c1 DE |
4514 | abbrev_section = (dwo_file != NULL |
4515 | ? &dwo_file->sections.abbrev | |
4516 | : &dwarf2_per_objfile->abbrev); | |
4517 | ||
09406207 DE |
4518 | if (dwarf2_read_debug) |
4519 | fprintf_unfiltered (gdb_stdlog, "Reading .debug_types%s for %s:\n", | |
4520 | dwo_file ? ".dwo" : "", | |
a32a8923 | 4521 | get_section_file_name (abbrev_section)); |
09406207 | 4522 | |
8b70b953 | 4523 | for (ix = 0; |
3019eac3 | 4524 | VEC_iterate (dwarf2_section_info_def, types, ix, section); |
8b70b953 TT |
4525 | ++ix) |
4526 | { | |
3019eac3 | 4527 | bfd *abfd; |
d521ce57 | 4528 | const gdb_byte *info_ptr, *end_ptr; |
348e048f | 4529 | |
8b70b953 TT |
4530 | dwarf2_read_section (objfile, section); |
4531 | info_ptr = section->buffer; | |
348e048f | 4532 | |
8b70b953 TT |
4533 | if (info_ptr == NULL) |
4534 | continue; | |
348e048f | 4535 | |
3019eac3 | 4536 | /* We can't set abfd until now because the section may be empty or |
a32a8923 DE |
4537 | not present, in which case the bfd is unknown. */ |
4538 | abfd = get_section_bfd_owner (section); | |
3019eac3 | 4539 | |
dee91e82 DE |
4540 | /* We don't use init_cutu_and_read_dies_simple, or some such, here |
4541 | because we don't need to read any dies: the signature is in the | |
4542 | header. */ | |
8b70b953 TT |
4543 | |
4544 | end_ptr = info_ptr + section->size; | |
4545 | while (info_ptr < end_ptr) | |
4546 | { | |
b64f50a1 | 4547 | sect_offset offset; |
3019eac3 | 4548 | cu_offset type_offset_in_tu; |
8b70b953 | 4549 | ULONGEST signature; |
52dc124a | 4550 | struct signatured_type *sig_type; |
3019eac3 | 4551 | struct dwo_unit *dwo_tu; |
8b70b953 | 4552 | void **slot; |
d521ce57 | 4553 | const gdb_byte *ptr = info_ptr; |
9ff913ba | 4554 | struct comp_unit_head header; |
dee91e82 | 4555 | unsigned int length; |
348e048f | 4556 | |
b64f50a1 | 4557 | offset.sect_off = ptr - section->buffer; |
348e048f | 4558 | |
8b70b953 | 4559 | /* We need to read the type's signature in order to build the hash |
9ff913ba | 4560 | table, but we don't need anything else just yet. */ |
348e048f | 4561 | |
4bdcc0c1 DE |
4562 | ptr = read_and_check_type_unit_head (&header, section, |
4563 | abbrev_section, ptr, | |
3019eac3 | 4564 | &signature, &type_offset_in_tu); |
6caca83c | 4565 | |
1ce1cefd | 4566 | length = get_cu_length (&header); |
dee91e82 | 4567 | |
6caca83c | 4568 | /* Skip dummy type units. */ |
dee91e82 DE |
4569 | if (ptr >= info_ptr + length |
4570 | || peek_abbrev_code (abfd, ptr) == 0) | |
6caca83c | 4571 | { |
1ce1cefd | 4572 | info_ptr += length; |
6caca83c CC |
4573 | continue; |
4574 | } | |
8b70b953 | 4575 | |
0349ea22 DE |
4576 | if (types_htab == NULL) |
4577 | { | |
4578 | if (dwo_file) | |
4579 | types_htab = allocate_dwo_unit_table (objfile); | |
4580 | else | |
4581 | types_htab = allocate_signatured_type_table (objfile); | |
4582 | } | |
4583 | ||
3019eac3 DE |
4584 | if (dwo_file) |
4585 | { | |
4586 | sig_type = NULL; | |
4587 | dwo_tu = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
4588 | struct dwo_unit); | |
4589 | dwo_tu->dwo_file = dwo_file; | |
4590 | dwo_tu->signature = signature; | |
4591 | dwo_tu->type_offset_in_tu = type_offset_in_tu; | |
8a0459fd | 4592 | dwo_tu->section = section; |
3019eac3 DE |
4593 | dwo_tu->offset = offset; |
4594 | dwo_tu->length = length; | |
4595 | } | |
4596 | else | |
4597 | { | |
4598 | /* N.B.: type_offset is not usable if this type uses a DWO file. | |
4599 | The real type_offset is in the DWO file. */ | |
4600 | dwo_tu = NULL; | |
4601 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
4602 | struct signatured_type); | |
4603 | sig_type->signature = signature; | |
4604 | sig_type->type_offset_in_tu = type_offset_in_tu; | |
4605 | sig_type->per_cu.objfile = objfile; | |
4606 | sig_type->per_cu.is_debug_types = 1; | |
8a0459fd | 4607 | sig_type->per_cu.section = section; |
3019eac3 DE |
4608 | sig_type->per_cu.offset = offset; |
4609 | sig_type->per_cu.length = length; | |
4610 | } | |
8b70b953 | 4611 | |
3019eac3 DE |
4612 | slot = htab_find_slot (types_htab, |
4613 | dwo_file ? (void*) dwo_tu : (void *) sig_type, | |
4614 | INSERT); | |
8b70b953 TT |
4615 | gdb_assert (slot != NULL); |
4616 | if (*slot != NULL) | |
4617 | { | |
3019eac3 DE |
4618 | sect_offset dup_offset; |
4619 | ||
4620 | if (dwo_file) | |
4621 | { | |
4622 | const struct dwo_unit *dup_tu = *slot; | |
4623 | ||
4624 | dup_offset = dup_tu->offset; | |
4625 | } | |
4626 | else | |
4627 | { | |
4628 | const struct signatured_type *dup_tu = *slot; | |
4629 | ||
4630 | dup_offset = dup_tu->per_cu.offset; | |
4631 | } | |
b3c8eb43 | 4632 | |
8b70b953 | 4633 | complaint (&symfile_complaints, |
c88ee1f0 | 4634 | _("debug type entry at offset 0x%x is duplicate to" |
4031ecc5 | 4635 | " the entry at offset 0x%x, signature %s"), |
3019eac3 | 4636 | offset.sect_off, dup_offset.sect_off, |
4031ecc5 | 4637 | hex_string (signature)); |
8b70b953 | 4638 | } |
3019eac3 | 4639 | *slot = dwo_file ? (void *) dwo_tu : (void *) sig_type; |
348e048f | 4640 | |
73be47f5 | 4641 | if (dwarf2_read_debug > 1) |
4031ecc5 | 4642 | fprintf_unfiltered (gdb_stdlog, " offset 0x%x, signature %s\n", |
b64f50a1 | 4643 | offset.sect_off, |
4031ecc5 | 4644 | hex_string (signature)); |
348e048f | 4645 | |
dee91e82 | 4646 | info_ptr += length; |
8b70b953 | 4647 | } |
348e048f DE |
4648 | } |
4649 | ||
3019eac3 DE |
4650 | return types_htab; |
4651 | } | |
4652 | ||
4653 | /* Create the hash table of all entries in the .debug_types section, | |
4654 | and initialize all_type_units. | |
4655 | The result is zero if there is an error (e.g. missing .debug_types section), | |
4656 | otherwise non-zero. */ | |
4657 | ||
4658 | static int | |
4659 | create_all_type_units (struct objfile *objfile) | |
4660 | { | |
4661 | htab_t types_htab; | |
b4dd5633 | 4662 | struct signatured_type **iter; |
3019eac3 DE |
4663 | |
4664 | types_htab = create_debug_types_hash_table (NULL, dwarf2_per_objfile->types); | |
4665 | if (types_htab == NULL) | |
4666 | { | |
4667 | dwarf2_per_objfile->signatured_types = NULL; | |
4668 | return 0; | |
4669 | } | |
4670 | ||
348e048f DE |
4671 | dwarf2_per_objfile->signatured_types = types_htab; |
4672 | ||
d467dd73 DE |
4673 | dwarf2_per_objfile->n_type_units = htab_elements (types_htab); |
4674 | dwarf2_per_objfile->all_type_units | |
a2ce51a0 DE |
4675 | = xmalloc (dwarf2_per_objfile->n_type_units |
4676 | * sizeof (struct signatured_type *)); | |
d467dd73 DE |
4677 | iter = &dwarf2_per_objfile->all_type_units[0]; |
4678 | htab_traverse_noresize (types_htab, add_signatured_type_cu_to_table, &iter); | |
4679 | gdb_assert (iter - &dwarf2_per_objfile->all_type_units[0] | |
4680 | == dwarf2_per_objfile->n_type_units); | |
1fd400ff | 4681 | |
348e048f DE |
4682 | return 1; |
4683 | } | |
4684 | ||
a2ce51a0 DE |
4685 | /* Subroutine of lookup_dwo_signatured_type and lookup_dwp_signatured_type. |
4686 | Fill in SIG_ENTRY with DWO_ENTRY. */ | |
4687 | ||
4688 | static void | |
4689 | fill_in_sig_entry_from_dwo_entry (struct objfile *objfile, | |
4690 | struct signatured_type *sig_entry, | |
4691 | struct dwo_unit *dwo_entry) | |
4692 | { | |
7ee85ab1 | 4693 | /* Make sure we're not clobbering something we don't expect to. */ |
a2ce51a0 DE |
4694 | gdb_assert (! sig_entry->per_cu.queued); |
4695 | gdb_assert (sig_entry->per_cu.cu == NULL); | |
4696 | gdb_assert (sig_entry->per_cu.v.quick != NULL); | |
4697 | gdb_assert (sig_entry->per_cu.v.quick->symtab == NULL); | |
4698 | gdb_assert (sig_entry->signature == dwo_entry->signature); | |
4699 | gdb_assert (sig_entry->type_offset_in_section.sect_off == 0); | |
4700 | gdb_assert (sig_entry->type_unit_group == NULL); | |
7ee85ab1 DE |
4701 | gdb_assert (sig_entry->dwo_unit == NULL); |
4702 | ||
4703 | sig_entry->per_cu.section = dwo_entry->section; | |
4704 | sig_entry->per_cu.offset = dwo_entry->offset; | |
4705 | sig_entry->per_cu.length = dwo_entry->length; | |
4706 | sig_entry->per_cu.reading_dwo_directly = 1; | |
4707 | sig_entry->per_cu.objfile = objfile; | |
a2ce51a0 DE |
4708 | sig_entry->type_offset_in_tu = dwo_entry->type_offset_in_tu; |
4709 | sig_entry->dwo_unit = dwo_entry; | |
4710 | } | |
4711 | ||
4712 | /* Subroutine of lookup_signatured_type. | |
7ee85ab1 DE |
4713 | If we haven't read the TU yet, create the signatured_type data structure |
4714 | for a TU to be read in directly from a DWO file, bypassing the stub. | |
4715 | This is the "Stay in DWO Optimization": When there is no DWP file and we're | |
4716 | using .gdb_index, then when reading a CU we want to stay in the DWO file | |
4717 | containing that CU. Otherwise we could end up reading several other DWO | |
4718 | files (due to comdat folding) to process the transitive closure of all the | |
4719 | mentioned TUs, and that can be slow. The current DWO file will have every | |
4720 | type signature that it needs. | |
a2ce51a0 DE |
4721 | We only do this for .gdb_index because in the psymtab case we already have |
4722 | to read all the DWOs to build the type unit groups. */ | |
4723 | ||
4724 | static struct signatured_type * | |
4725 | lookup_dwo_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) | |
4726 | { | |
4727 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
4728 | struct dwo_file *dwo_file; | |
4729 | struct dwo_unit find_dwo_entry, *dwo_entry; | |
4730 | struct signatured_type find_sig_entry, *sig_entry; | |
4731 | ||
4732 | gdb_assert (cu->dwo_unit && dwarf2_per_objfile->using_index); | |
4733 | ||
4734 | /* Note: cu->dwo_unit is the dwo_unit that references this TU, not the | |
4735 | dwo_unit of the TU itself. */ | |
4736 | dwo_file = cu->dwo_unit->dwo_file; | |
4737 | ||
4738 | /* We only ever need to read in one copy of a signatured type. | |
4739 | Just use the global signatured_types array. If this is the first time | |
4740 | we're reading this type, replace the recorded data from .gdb_index with | |
4741 | this TU. */ | |
4742 | ||
4743 | if (dwarf2_per_objfile->signatured_types == NULL) | |
4744 | return NULL; | |
4745 | find_sig_entry.signature = sig; | |
4746 | sig_entry = htab_find (dwarf2_per_objfile->signatured_types, &find_sig_entry); | |
4747 | if (sig_entry == NULL) | |
4748 | return NULL; | |
7ee85ab1 DE |
4749 | |
4750 | /* We can get here with the TU already read, *or* in the process of being | |
4751 | read. Don't reassign it if that's the case. Also note that if the TU is | |
4752 | already being read, it may not have come from a DWO, the program may be | |
4753 | a mix of Fission-compiled code and non-Fission-compiled code. */ | |
a2ce51a0 | 4754 | /* Have we already tried to read this TU? */ |
7ee85ab1 | 4755 | if (sig_entry->per_cu.tu_read) |
a2ce51a0 DE |
4756 | return sig_entry; |
4757 | ||
4758 | /* Ok, this is the first time we're reading this TU. */ | |
4759 | if (dwo_file->tus == NULL) | |
4760 | return NULL; | |
4761 | find_dwo_entry.signature = sig; | |
4762 | dwo_entry = htab_find (dwo_file->tus, &find_dwo_entry); | |
4763 | if (dwo_entry == NULL) | |
4764 | return NULL; | |
4765 | ||
4766 | fill_in_sig_entry_from_dwo_entry (objfile, sig_entry, dwo_entry); | |
89e63ee4 | 4767 | sig_entry->per_cu.tu_read = 1; |
a2ce51a0 DE |
4768 | return sig_entry; |
4769 | } | |
4770 | ||
4771 | /* Subroutine of lookup_dwp_signatured_type. | |
4772 | Add an entry for signature SIG to dwarf2_per_objfile->signatured_types. */ | |
4773 | ||
4774 | static struct signatured_type * | |
4775 | add_type_unit (ULONGEST sig) | |
4776 | { | |
4777 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
4778 | int n_type_units = dwarf2_per_objfile->n_type_units; | |
4779 | struct signatured_type *sig_type; | |
4780 | void **slot; | |
4781 | ||
4782 | ++n_type_units; | |
4783 | dwarf2_per_objfile->all_type_units = | |
4784 | xrealloc (dwarf2_per_objfile->all_type_units, | |
4785 | n_type_units * sizeof (struct signatured_type *)); | |
4786 | dwarf2_per_objfile->n_type_units = n_type_units; | |
4787 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
4788 | struct signatured_type); | |
4789 | dwarf2_per_objfile->all_type_units[n_type_units - 1] = sig_type; | |
4790 | sig_type->signature = sig; | |
4791 | sig_type->per_cu.is_debug_types = 1; | |
4792 | sig_type->per_cu.v.quick = | |
4793 | OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
4794 | struct dwarf2_per_cu_quick_data); | |
4795 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types, | |
4796 | sig_type, INSERT); | |
4797 | gdb_assert (*slot == NULL); | |
4798 | *slot = sig_type; | |
4799 | /* The rest of sig_type must be filled in by the caller. */ | |
4800 | return sig_type; | |
4801 | } | |
4802 | ||
4803 | /* Subroutine of lookup_signatured_type. | |
4804 | Look up the type for signature SIG, and if we can't find SIG in .gdb_index | |
4805 | then try the DWP file. | |
4806 | Normally this "can't happen", but if there's a bug in signature | |
4807 | generation and/or the DWP file is built incorrectly, it can happen. | |
4808 | Using the type directly from the DWP file means we don't have the stub | |
4809 | which has some useful attributes (e.g., DW_AT_comp_dir), but they're | |
4810 | not critical. [Eventually the stub may go away for type units anyway.] */ | |
4811 | ||
4812 | static struct signatured_type * | |
4813 | lookup_dwp_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) | |
4814 | { | |
4815 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
4816 | struct dwp_file *dwp_file = get_dwp_file (); | |
4817 | struct dwo_unit *dwo_entry; | |
4818 | struct signatured_type find_sig_entry, *sig_entry; | |
4819 | ||
4820 | gdb_assert (cu->dwo_unit && dwarf2_per_objfile->using_index); | |
4821 | gdb_assert (dwp_file != NULL); | |
4822 | ||
4823 | if (dwarf2_per_objfile->signatured_types != NULL) | |
4824 | { | |
4825 | find_sig_entry.signature = sig; | |
4826 | sig_entry = htab_find (dwarf2_per_objfile->signatured_types, | |
4827 | &find_sig_entry); | |
4828 | if (sig_entry != NULL) | |
4829 | return sig_entry; | |
4830 | } | |
4831 | ||
4832 | /* This is the "shouldn't happen" case. | |
4833 | Try the DWP file and hope for the best. */ | |
4834 | if (dwp_file->tus == NULL) | |
4835 | return NULL; | |
57d63ce2 DE |
4836 | dwo_entry = lookup_dwo_unit_in_dwp (dwp_file, NULL, |
4837 | sig, 1 /* is_debug_types */); | |
a2ce51a0 DE |
4838 | if (dwo_entry == NULL) |
4839 | return NULL; | |
4840 | ||
4841 | sig_entry = add_type_unit (sig); | |
4842 | fill_in_sig_entry_from_dwo_entry (objfile, sig_entry, dwo_entry); | |
4843 | ||
4844 | /* The caller will signal a complaint if we return NULL. | |
4845 | Here we don't return NULL but we still want to complain. */ | |
4846 | complaint (&symfile_complaints, | |
4847 | _("Bad type signature %s referenced by %s at 0x%x," | |
4848 | " coping by using copy in DWP [in module %s]"), | |
4849 | hex_string (sig), | |
4850 | cu->per_cu->is_debug_types ? "TU" : "CU", | |
4851 | cu->per_cu->offset.sect_off, | |
4262abfb | 4852 | objfile_name (objfile)); |
a2ce51a0 DE |
4853 | |
4854 | return sig_entry; | |
4855 | } | |
4856 | ||
380bca97 | 4857 | /* Lookup a signature based type for DW_FORM_ref_sig8. |
5a8b3f62 DE |
4858 | Returns NULL if signature SIG is not present in the table. |
4859 | It is up to the caller to complain about this. */ | |
348e048f DE |
4860 | |
4861 | static struct signatured_type * | |
a2ce51a0 | 4862 | lookup_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) |
348e048f | 4863 | { |
a2ce51a0 DE |
4864 | if (cu->dwo_unit |
4865 | && dwarf2_per_objfile->using_index) | |
4866 | { | |
4867 | /* We're in a DWO/DWP file, and we're using .gdb_index. | |
4868 | These cases require special processing. */ | |
4869 | if (get_dwp_file () == NULL) | |
4870 | return lookup_dwo_signatured_type (cu, sig); | |
4871 | else | |
4872 | return lookup_dwp_signatured_type (cu, sig); | |
4873 | } | |
4874 | else | |
4875 | { | |
4876 | struct signatured_type find_entry, *entry; | |
348e048f | 4877 | |
a2ce51a0 DE |
4878 | if (dwarf2_per_objfile->signatured_types == NULL) |
4879 | return NULL; | |
4880 | find_entry.signature = sig; | |
4881 | entry = htab_find (dwarf2_per_objfile->signatured_types, &find_entry); | |
4882 | return entry; | |
4883 | } | |
348e048f | 4884 | } |
42e7ad6c DE |
4885 | \f |
4886 | /* Low level DIE reading support. */ | |
348e048f | 4887 | |
d85a05f0 DJ |
4888 | /* Initialize a die_reader_specs struct from a dwarf2_cu struct. */ |
4889 | ||
4890 | static void | |
4891 | init_cu_die_reader (struct die_reader_specs *reader, | |
dee91e82 | 4892 | struct dwarf2_cu *cu, |
3019eac3 DE |
4893 | struct dwarf2_section_info *section, |
4894 | struct dwo_file *dwo_file) | |
d85a05f0 | 4895 | { |
fceca515 | 4896 | gdb_assert (section->readin && section->buffer != NULL); |
a32a8923 | 4897 | reader->abfd = get_section_bfd_owner (section); |
d85a05f0 | 4898 | reader->cu = cu; |
3019eac3 | 4899 | reader->dwo_file = dwo_file; |
dee91e82 DE |
4900 | reader->die_section = section; |
4901 | reader->buffer = section->buffer; | |
f664829e | 4902 | reader->buffer_end = section->buffer + section->size; |
a2ce51a0 | 4903 | reader->comp_dir = NULL; |
d85a05f0 DJ |
4904 | } |
4905 | ||
b0c7bfa9 DE |
4906 | /* Subroutine of init_cutu_and_read_dies to simplify it. |
4907 | Read in the rest of a CU/TU top level DIE from DWO_UNIT. | |
4908 | There's just a lot of work to do, and init_cutu_and_read_dies is big enough | |
4909 | already. | |
4910 | ||
4911 | STUB_COMP_UNIT_DIE is for the stub DIE, we copy over certain attributes | |
4912 | from it to the DIE in the DWO. If NULL we are skipping the stub. | |
a2ce51a0 DE |
4913 | STUB_COMP_DIR is similar to STUB_COMP_UNIT_DIE: When reading a TU directly |
4914 | from the DWO file, bypassing the stub, it contains the DW_AT_comp_dir | |
4915 | attribute of the referencing CU. Exactly one of STUB_COMP_UNIT_DIE and | |
4916 | COMP_DIR must be non-NULL. | |
b0c7bfa9 DE |
4917 | *RESULT_READER,*RESULT_INFO_PTR,*RESULT_COMP_UNIT_DIE,*RESULT_HAS_CHILDREN |
4918 | are filled in with the info of the DIE from the DWO file. | |
4919 | ABBREV_TABLE_PROVIDED is non-zero if the caller of init_cutu_and_read_dies | |
4920 | provided an abbrev table to use. | |
4921 | The result is non-zero if a valid (non-dummy) DIE was found. */ | |
4922 | ||
4923 | static int | |
4924 | read_cutu_die_from_dwo (struct dwarf2_per_cu_data *this_cu, | |
4925 | struct dwo_unit *dwo_unit, | |
4926 | int abbrev_table_provided, | |
4927 | struct die_info *stub_comp_unit_die, | |
a2ce51a0 | 4928 | const char *stub_comp_dir, |
b0c7bfa9 | 4929 | struct die_reader_specs *result_reader, |
d521ce57 | 4930 | const gdb_byte **result_info_ptr, |
b0c7bfa9 DE |
4931 | struct die_info **result_comp_unit_die, |
4932 | int *result_has_children) | |
4933 | { | |
4934 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
4935 | struct dwarf2_cu *cu = this_cu->cu; | |
4936 | struct dwarf2_section_info *section; | |
4937 | bfd *abfd; | |
d521ce57 | 4938 | const gdb_byte *begin_info_ptr, *info_ptr; |
b0c7bfa9 DE |
4939 | const char *comp_dir_string; |
4940 | ULONGEST signature; /* Or dwo_id. */ | |
4941 | struct attribute *comp_dir, *stmt_list, *low_pc, *high_pc, *ranges; | |
4942 | int i,num_extra_attrs; | |
4943 | struct dwarf2_section_info *dwo_abbrev_section; | |
4944 | struct attribute *attr; | |
a2ce51a0 | 4945 | struct attribute comp_dir_attr; |
b0c7bfa9 DE |
4946 | struct die_info *comp_unit_die; |
4947 | ||
a2ce51a0 DE |
4948 | /* Both can't be provided. */ |
4949 | gdb_assert (! (stub_comp_unit_die && stub_comp_dir)); | |
4950 | ||
b0c7bfa9 DE |
4951 | /* These attributes aren't processed until later: |
4952 | DW_AT_stmt_list, DW_AT_low_pc, DW_AT_high_pc, DW_AT_ranges. | |
4953 | However, the attribute is found in the stub which we won't have later. | |
4954 | In order to not impose this complication on the rest of the code, | |
4955 | we read them here and copy them to the DWO CU/TU die. */ | |
4956 | ||
4957 | stmt_list = NULL; | |
4958 | low_pc = NULL; | |
4959 | high_pc = NULL; | |
4960 | ranges = NULL; | |
4961 | comp_dir = NULL; | |
4962 | ||
4963 | if (stub_comp_unit_die != NULL) | |
4964 | { | |
4965 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
4966 | DWO file. */ | |
4967 | if (! this_cu->is_debug_types) | |
4968 | stmt_list = dwarf2_attr (stub_comp_unit_die, DW_AT_stmt_list, cu); | |
4969 | low_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_low_pc, cu); | |
4970 | high_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_high_pc, cu); | |
4971 | ranges = dwarf2_attr (stub_comp_unit_die, DW_AT_ranges, cu); | |
4972 | comp_dir = dwarf2_attr (stub_comp_unit_die, DW_AT_comp_dir, cu); | |
4973 | ||
4974 | /* There should be a DW_AT_addr_base attribute here (if needed). | |
4975 | We need the value before we can process DW_FORM_GNU_addr_index. */ | |
4976 | cu->addr_base = 0; | |
4977 | attr = dwarf2_attr (stub_comp_unit_die, DW_AT_GNU_addr_base, cu); | |
4978 | if (attr) | |
4979 | cu->addr_base = DW_UNSND (attr); | |
4980 | ||
4981 | /* There should be a DW_AT_ranges_base attribute here (if needed). | |
4982 | We need the value before we can process DW_AT_ranges. */ | |
4983 | cu->ranges_base = 0; | |
4984 | attr = dwarf2_attr (stub_comp_unit_die, DW_AT_GNU_ranges_base, cu); | |
4985 | if (attr) | |
4986 | cu->ranges_base = DW_UNSND (attr); | |
4987 | } | |
a2ce51a0 DE |
4988 | else if (stub_comp_dir != NULL) |
4989 | { | |
4990 | /* Reconstruct the comp_dir attribute to simplify the code below. */ | |
4991 | comp_dir = (struct attribute *) | |
4992 | obstack_alloc (&cu->comp_unit_obstack, sizeof (*comp_dir)); | |
4993 | comp_dir->name = DW_AT_comp_dir; | |
4994 | comp_dir->form = DW_FORM_string; | |
4995 | DW_STRING_IS_CANONICAL (comp_dir) = 0; | |
4996 | DW_STRING (comp_dir) = stub_comp_dir; | |
4997 | } | |
b0c7bfa9 DE |
4998 | |
4999 | /* Set up for reading the DWO CU/TU. */ | |
5000 | cu->dwo_unit = dwo_unit; | |
5001 | section = dwo_unit->section; | |
5002 | dwarf2_read_section (objfile, section); | |
a32a8923 | 5003 | abfd = get_section_bfd_owner (section); |
b0c7bfa9 DE |
5004 | begin_info_ptr = info_ptr = section->buffer + dwo_unit->offset.sect_off; |
5005 | dwo_abbrev_section = &dwo_unit->dwo_file->sections.abbrev; | |
5006 | init_cu_die_reader (result_reader, cu, section, dwo_unit->dwo_file); | |
5007 | ||
5008 | if (this_cu->is_debug_types) | |
5009 | { | |
5010 | ULONGEST header_signature; | |
5011 | cu_offset type_offset_in_tu; | |
5012 | struct signatured_type *sig_type = (struct signatured_type *) this_cu; | |
5013 | ||
5014 | info_ptr = read_and_check_type_unit_head (&cu->header, section, | |
5015 | dwo_abbrev_section, | |
5016 | info_ptr, | |
5017 | &header_signature, | |
5018 | &type_offset_in_tu); | |
a2ce51a0 DE |
5019 | /* This is not an assert because it can be caused by bad debug info. */ |
5020 | if (sig_type->signature != header_signature) | |
5021 | { | |
5022 | error (_("Dwarf Error: signature mismatch %s vs %s while reading" | |
5023 | " TU at offset 0x%x [in module %s]"), | |
5024 | hex_string (sig_type->signature), | |
5025 | hex_string (header_signature), | |
5026 | dwo_unit->offset.sect_off, | |
5027 | bfd_get_filename (abfd)); | |
5028 | } | |
b0c7bfa9 DE |
5029 | gdb_assert (dwo_unit->offset.sect_off == cu->header.offset.sect_off); |
5030 | /* For DWOs coming from DWP files, we don't know the CU length | |
5031 | nor the type's offset in the TU until now. */ | |
5032 | dwo_unit->length = get_cu_length (&cu->header); | |
5033 | dwo_unit->type_offset_in_tu = type_offset_in_tu; | |
5034 | ||
5035 | /* Establish the type offset that can be used to lookup the type. | |
5036 | For DWO files, we don't know it until now. */ | |
5037 | sig_type->type_offset_in_section.sect_off = | |
5038 | dwo_unit->offset.sect_off + dwo_unit->type_offset_in_tu.cu_off; | |
5039 | } | |
5040 | else | |
5041 | { | |
5042 | info_ptr = read_and_check_comp_unit_head (&cu->header, section, | |
5043 | dwo_abbrev_section, | |
5044 | info_ptr, 0); | |
5045 | gdb_assert (dwo_unit->offset.sect_off == cu->header.offset.sect_off); | |
5046 | /* For DWOs coming from DWP files, we don't know the CU length | |
5047 | until now. */ | |
5048 | dwo_unit->length = get_cu_length (&cu->header); | |
5049 | } | |
5050 | ||
02142a6c DE |
5051 | /* Replace the CU's original abbrev table with the DWO's. |
5052 | Reminder: We can't read the abbrev table until we've read the header. */ | |
b0c7bfa9 DE |
5053 | if (abbrev_table_provided) |
5054 | { | |
5055 | /* Don't free the provided abbrev table, the caller of | |
5056 | init_cutu_and_read_dies owns it. */ | |
5057 | dwarf2_read_abbrevs (cu, dwo_abbrev_section); | |
02142a6c | 5058 | /* Ensure the DWO abbrev table gets freed. */ |
b0c7bfa9 DE |
5059 | make_cleanup (dwarf2_free_abbrev_table, cu); |
5060 | } | |
5061 | else | |
5062 | { | |
5063 | dwarf2_free_abbrev_table (cu); | |
5064 | dwarf2_read_abbrevs (cu, dwo_abbrev_section); | |
02142a6c | 5065 | /* Leave any existing abbrev table cleanup as is. */ |
b0c7bfa9 DE |
5066 | } |
5067 | ||
5068 | /* Read in the die, but leave space to copy over the attributes | |
5069 | from the stub. This has the benefit of simplifying the rest of | |
5070 | the code - all the work to maintain the illusion of a single | |
5071 | DW_TAG_{compile,type}_unit DIE is done here. */ | |
5072 | num_extra_attrs = ((stmt_list != NULL) | |
5073 | + (low_pc != NULL) | |
5074 | + (high_pc != NULL) | |
5075 | + (ranges != NULL) | |
5076 | + (comp_dir != NULL)); | |
5077 | info_ptr = read_full_die_1 (result_reader, result_comp_unit_die, info_ptr, | |
5078 | result_has_children, num_extra_attrs); | |
5079 | ||
5080 | /* Copy over the attributes from the stub to the DIE we just read in. */ | |
5081 | comp_unit_die = *result_comp_unit_die; | |
5082 | i = comp_unit_die->num_attrs; | |
5083 | if (stmt_list != NULL) | |
5084 | comp_unit_die->attrs[i++] = *stmt_list; | |
5085 | if (low_pc != NULL) | |
5086 | comp_unit_die->attrs[i++] = *low_pc; | |
5087 | if (high_pc != NULL) | |
5088 | comp_unit_die->attrs[i++] = *high_pc; | |
5089 | if (ranges != NULL) | |
5090 | comp_unit_die->attrs[i++] = *ranges; | |
5091 | if (comp_dir != NULL) | |
5092 | comp_unit_die->attrs[i++] = *comp_dir; | |
5093 | comp_unit_die->num_attrs += num_extra_attrs; | |
5094 | ||
bf6af496 DE |
5095 | if (dwarf2_die_debug) |
5096 | { | |
5097 | fprintf_unfiltered (gdb_stdlog, | |
5098 | "Read die from %s@0x%x of %s:\n", | |
a32a8923 | 5099 | get_section_name (section), |
bf6af496 DE |
5100 | (unsigned) (begin_info_ptr - section->buffer), |
5101 | bfd_get_filename (abfd)); | |
5102 | dump_die (comp_unit_die, dwarf2_die_debug); | |
5103 | } | |
5104 | ||
a2ce51a0 DE |
5105 | /* Save the comp_dir attribute. If there is no DWP file then we'll read |
5106 | TUs by skipping the stub and going directly to the entry in the DWO file. | |
5107 | However, skipping the stub means we won't get DW_AT_comp_dir, so we have | |
5108 | to get it via circuitous means. Blech. */ | |
5109 | if (comp_dir != NULL) | |
5110 | result_reader->comp_dir = DW_STRING (comp_dir); | |
5111 | ||
b0c7bfa9 DE |
5112 | /* Skip dummy compilation units. */ |
5113 | if (info_ptr >= begin_info_ptr + dwo_unit->length | |
5114 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
5115 | return 0; | |
5116 | ||
5117 | *result_info_ptr = info_ptr; | |
5118 | return 1; | |
5119 | } | |
5120 | ||
5121 | /* Subroutine of init_cutu_and_read_dies to simplify it. | |
5122 | Look up the DWO unit specified by COMP_UNIT_DIE of THIS_CU. | |
6a506a2d | 5123 | Returns NULL if the specified DWO unit cannot be found. */ |
b0c7bfa9 DE |
5124 | |
5125 | static struct dwo_unit * | |
5126 | lookup_dwo_unit (struct dwarf2_per_cu_data *this_cu, | |
5127 | struct die_info *comp_unit_die) | |
5128 | { | |
5129 | struct dwarf2_cu *cu = this_cu->cu; | |
5130 | struct attribute *attr; | |
5131 | ULONGEST signature; | |
5132 | struct dwo_unit *dwo_unit; | |
5133 | const char *comp_dir, *dwo_name; | |
5134 | ||
a2ce51a0 DE |
5135 | gdb_assert (cu != NULL); |
5136 | ||
b0c7bfa9 DE |
5137 | /* Yeah, we look dwo_name up again, but it simplifies the code. */ |
5138 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_name, cu); | |
5139 | gdb_assert (attr != NULL); | |
5140 | dwo_name = DW_STRING (attr); | |
5141 | comp_dir = NULL; | |
5142 | attr = dwarf2_attr (comp_unit_die, DW_AT_comp_dir, cu); | |
5143 | if (attr) | |
5144 | comp_dir = DW_STRING (attr); | |
5145 | ||
5146 | if (this_cu->is_debug_types) | |
5147 | { | |
5148 | struct signatured_type *sig_type; | |
5149 | ||
5150 | /* Since this_cu is the first member of struct signatured_type, | |
5151 | we can go from a pointer to one to a pointer to the other. */ | |
5152 | sig_type = (struct signatured_type *) this_cu; | |
5153 | signature = sig_type->signature; | |
5154 | dwo_unit = lookup_dwo_type_unit (sig_type, dwo_name, comp_dir); | |
5155 | } | |
5156 | else | |
5157 | { | |
5158 | struct attribute *attr; | |
5159 | ||
5160 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_id, cu); | |
5161 | if (! attr) | |
5162 | error (_("Dwarf Error: missing dwo_id for dwo_name %s" | |
5163 | " [in module %s]"), | |
4262abfb | 5164 | dwo_name, objfile_name (this_cu->objfile)); |
b0c7bfa9 DE |
5165 | signature = DW_UNSND (attr); |
5166 | dwo_unit = lookup_dwo_comp_unit (this_cu, dwo_name, comp_dir, | |
5167 | signature); | |
5168 | } | |
5169 | ||
b0c7bfa9 DE |
5170 | return dwo_unit; |
5171 | } | |
5172 | ||
a2ce51a0 DE |
5173 | /* Subroutine of init_cutu_and_read_dies to simplify it. |
5174 | Read a TU directly from a DWO file, bypassing the stub. */ | |
5175 | ||
5176 | static void | |
5177 | init_tu_and_read_dwo_dies (struct dwarf2_per_cu_data *this_cu, int keep, | |
5178 | die_reader_func_ftype *die_reader_func, | |
5179 | void *data) | |
5180 | { | |
5181 | struct dwarf2_cu *cu; | |
5182 | struct signatured_type *sig_type; | |
5183 | struct cleanup *cleanups, *free_cu_cleanup; | |
5184 | struct die_reader_specs reader; | |
5185 | const gdb_byte *info_ptr; | |
5186 | struct die_info *comp_unit_die; | |
5187 | int has_children; | |
5188 | ||
5189 | /* Verify we can do the following downcast, and that we have the | |
5190 | data we need. */ | |
5191 | gdb_assert (this_cu->is_debug_types && this_cu->reading_dwo_directly); | |
5192 | sig_type = (struct signatured_type *) this_cu; | |
5193 | gdb_assert (sig_type->dwo_unit != NULL); | |
5194 | ||
5195 | cleanups = make_cleanup (null_cleanup, NULL); | |
5196 | ||
5197 | gdb_assert (this_cu->cu == NULL); | |
5198 | cu = xmalloc (sizeof (*cu)); | |
5199 | init_one_comp_unit (cu, this_cu); | |
5200 | /* If an error occurs while loading, release our storage. */ | |
5201 | free_cu_cleanup = make_cleanup (free_heap_comp_unit, cu); | |
5202 | ||
5203 | if (read_cutu_die_from_dwo (this_cu, sig_type->dwo_unit, | |
5204 | 0 /* abbrev_table_provided */, | |
5205 | NULL /* stub_comp_unit_die */, | |
5206 | sig_type->dwo_unit->dwo_file->comp_dir, | |
5207 | &reader, &info_ptr, | |
5208 | &comp_unit_die, &has_children) == 0) | |
5209 | { | |
5210 | /* Dummy die. */ | |
5211 | do_cleanups (cleanups); | |
5212 | return; | |
5213 | } | |
5214 | ||
5215 | /* All the "real" work is done here. */ | |
5216 | die_reader_func (&reader, info_ptr, comp_unit_die, has_children, data); | |
5217 | ||
5218 | /* This duplicates some code in init_cutu_and_read_dies, | |
5219 | but the alternative is making the latter more complex. | |
5220 | This function is only for the special case of using DWO files directly: | |
5221 | no point in overly complicating the general case just to handle this. */ | |
5222 | if (keep) | |
5223 | { | |
5224 | /* We've successfully allocated this compilation unit. Let our | |
5225 | caller clean it up when finished with it. */ | |
5226 | discard_cleanups (free_cu_cleanup); | |
5227 | ||
5228 | /* We can only discard free_cu_cleanup and all subsequent cleanups. | |
5229 | So we have to manually free the abbrev table. */ | |
5230 | dwarf2_free_abbrev_table (cu); | |
5231 | ||
5232 | /* Link this CU into read_in_chain. */ | |
5233 | this_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
5234 | dwarf2_per_objfile->read_in_chain = this_cu; | |
5235 | } | |
5236 | else | |
5237 | do_cleanups (free_cu_cleanup); | |
5238 | ||
5239 | do_cleanups (cleanups); | |
5240 | } | |
5241 | ||
fd820528 | 5242 | /* Initialize a CU (or TU) and read its DIEs. |
3019eac3 | 5243 | If the CU defers to a DWO file, read the DWO file as well. |
dee91e82 | 5244 | |
f4dc4d17 DE |
5245 | ABBREV_TABLE, if non-NULL, is the abbreviation table to use. |
5246 | Otherwise the table specified in the comp unit header is read in and used. | |
5247 | This is an optimization for when we already have the abbrev table. | |
5248 | ||
dee91e82 DE |
5249 | If USE_EXISTING_CU is non-zero, and THIS_CU->cu is non-NULL, then use it. |
5250 | Otherwise, a new CU is allocated with xmalloc. | |
5251 | ||
5252 | If KEEP is non-zero, then if we allocated a dwarf2_cu we add it to | |
5253 | read_in_chain. Otherwise the dwarf2_cu data is freed at the end. | |
5254 | ||
5255 | WARNING: If THIS_CU is a "dummy CU" (used as filler by the incremental | |
fd820528 | 5256 | linker) then DIE_READER_FUNC will not get called. */ |
aaa75496 | 5257 | |
70221824 | 5258 | static void |
fd820528 | 5259 | init_cutu_and_read_dies (struct dwarf2_per_cu_data *this_cu, |
f4dc4d17 | 5260 | struct abbrev_table *abbrev_table, |
fd820528 DE |
5261 | int use_existing_cu, int keep, |
5262 | die_reader_func_ftype *die_reader_func, | |
5263 | void *data) | |
c906108c | 5264 | { |
dee91e82 | 5265 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8a0459fd | 5266 | struct dwarf2_section_info *section = this_cu->section; |
a32a8923 | 5267 | bfd *abfd = get_section_bfd_owner (section); |
dee91e82 | 5268 | struct dwarf2_cu *cu; |
d521ce57 | 5269 | const gdb_byte *begin_info_ptr, *info_ptr; |
dee91e82 | 5270 | struct die_reader_specs reader; |
d85a05f0 | 5271 | struct die_info *comp_unit_die; |
dee91e82 | 5272 | int has_children; |
d85a05f0 | 5273 | struct attribute *attr; |
365156ad | 5274 | struct cleanup *cleanups, *free_cu_cleanup = NULL; |
dee91e82 | 5275 | struct signatured_type *sig_type = NULL; |
4bdcc0c1 | 5276 | struct dwarf2_section_info *abbrev_section; |
42e7ad6c DE |
5277 | /* Non-zero if CU currently points to a DWO file and we need to |
5278 | reread it. When this happens we need to reread the skeleton die | |
a2ce51a0 | 5279 | before we can reread the DWO file (this only applies to CUs, not TUs). */ |
42e7ad6c | 5280 | int rereading_dwo_cu = 0; |
c906108c | 5281 | |
09406207 DE |
5282 | if (dwarf2_die_debug) |
5283 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset 0x%x\n", | |
5284 | this_cu->is_debug_types ? "type" : "comp", | |
5285 | this_cu->offset.sect_off); | |
5286 | ||
dee91e82 DE |
5287 | if (use_existing_cu) |
5288 | gdb_assert (keep); | |
23745b47 | 5289 | |
a2ce51a0 DE |
5290 | /* If we're reading a TU directly from a DWO file, including a virtual DWO |
5291 | file (instead of going through the stub), short-circuit all of this. */ | |
5292 | if (this_cu->reading_dwo_directly) | |
5293 | { | |
5294 | /* Narrow down the scope of possibilities to have to understand. */ | |
5295 | gdb_assert (this_cu->is_debug_types); | |
5296 | gdb_assert (abbrev_table == NULL); | |
5297 | gdb_assert (!use_existing_cu); | |
5298 | init_tu_and_read_dwo_dies (this_cu, keep, die_reader_func, data); | |
5299 | return; | |
5300 | } | |
5301 | ||
dee91e82 DE |
5302 | cleanups = make_cleanup (null_cleanup, NULL); |
5303 | ||
5304 | /* This is cheap if the section is already read in. */ | |
5305 | dwarf2_read_section (objfile, section); | |
5306 | ||
5307 | begin_info_ptr = info_ptr = section->buffer + this_cu->offset.sect_off; | |
36586728 TT |
5308 | |
5309 | abbrev_section = get_abbrev_section_for_cu (this_cu); | |
dee91e82 DE |
5310 | |
5311 | if (use_existing_cu && this_cu->cu != NULL) | |
5312 | { | |
5313 | cu = this_cu->cu; | |
42e7ad6c DE |
5314 | |
5315 | /* If this CU is from a DWO file we need to start over, we need to | |
5316 | refetch the attributes from the skeleton CU. | |
5317 | This could be optimized by retrieving those attributes from when we | |
5318 | were here the first time: the previous comp_unit_die was stored in | |
5319 | comp_unit_obstack. But there's no data yet that we need this | |
5320 | optimization. */ | |
5321 | if (cu->dwo_unit != NULL) | |
5322 | rereading_dwo_cu = 1; | |
dee91e82 DE |
5323 | } |
5324 | else | |
5325 | { | |
5326 | /* If !use_existing_cu, this_cu->cu must be NULL. */ | |
5327 | gdb_assert (this_cu->cu == NULL); | |
5328 | ||
5329 | cu = xmalloc (sizeof (*cu)); | |
5330 | init_one_comp_unit (cu, this_cu); | |
5331 | ||
5332 | /* If an error occurs while loading, release our storage. */ | |
365156ad | 5333 | free_cu_cleanup = make_cleanup (free_heap_comp_unit, cu); |
42e7ad6c | 5334 | } |
dee91e82 | 5335 | |
b0c7bfa9 | 5336 | /* Get the header. */ |
42e7ad6c DE |
5337 | if (cu->header.first_die_offset.cu_off != 0 && ! rereading_dwo_cu) |
5338 | { | |
5339 | /* We already have the header, there's no need to read it in again. */ | |
5340 | info_ptr += cu->header.first_die_offset.cu_off; | |
5341 | } | |
5342 | else | |
5343 | { | |
3019eac3 | 5344 | if (this_cu->is_debug_types) |
dee91e82 DE |
5345 | { |
5346 | ULONGEST signature; | |
42e7ad6c | 5347 | cu_offset type_offset_in_tu; |
dee91e82 | 5348 | |
4bdcc0c1 DE |
5349 | info_ptr = read_and_check_type_unit_head (&cu->header, section, |
5350 | abbrev_section, info_ptr, | |
42e7ad6c DE |
5351 | &signature, |
5352 | &type_offset_in_tu); | |
dee91e82 | 5353 | |
42e7ad6c DE |
5354 | /* Since per_cu is the first member of struct signatured_type, |
5355 | we can go from a pointer to one to a pointer to the other. */ | |
5356 | sig_type = (struct signatured_type *) this_cu; | |
5357 | gdb_assert (sig_type->signature == signature); | |
5358 | gdb_assert (sig_type->type_offset_in_tu.cu_off | |
5359 | == type_offset_in_tu.cu_off); | |
dee91e82 DE |
5360 | gdb_assert (this_cu->offset.sect_off == cu->header.offset.sect_off); |
5361 | ||
42e7ad6c DE |
5362 | /* LENGTH has not been set yet for type units if we're |
5363 | using .gdb_index. */ | |
1ce1cefd | 5364 | this_cu->length = get_cu_length (&cu->header); |
3019eac3 DE |
5365 | |
5366 | /* Establish the type offset that can be used to lookup the type. */ | |
5367 | sig_type->type_offset_in_section.sect_off = | |
5368 | this_cu->offset.sect_off + sig_type->type_offset_in_tu.cu_off; | |
dee91e82 DE |
5369 | } |
5370 | else | |
5371 | { | |
4bdcc0c1 DE |
5372 | info_ptr = read_and_check_comp_unit_head (&cu->header, section, |
5373 | abbrev_section, | |
5374 | info_ptr, 0); | |
dee91e82 DE |
5375 | |
5376 | gdb_assert (this_cu->offset.sect_off == cu->header.offset.sect_off); | |
1ce1cefd | 5377 | gdb_assert (this_cu->length == get_cu_length (&cu->header)); |
dee91e82 DE |
5378 | } |
5379 | } | |
10b3939b | 5380 | |
6caca83c | 5381 | /* Skip dummy compilation units. */ |
dee91e82 | 5382 | if (info_ptr >= begin_info_ptr + this_cu->length |
6caca83c CC |
5383 | || peek_abbrev_code (abfd, info_ptr) == 0) |
5384 | { | |
dee91e82 | 5385 | do_cleanups (cleanups); |
21b2bd31 | 5386 | return; |
6caca83c CC |
5387 | } |
5388 | ||
433df2d4 DE |
5389 | /* If we don't have them yet, read the abbrevs for this compilation unit. |
5390 | And if we need to read them now, make sure they're freed when we're | |
42e7ad6c DE |
5391 | done. Note that it's important that if the CU had an abbrev table |
5392 | on entry we don't free it when we're done: Somewhere up the call stack | |
5393 | it may be in use. */ | |
f4dc4d17 DE |
5394 | if (abbrev_table != NULL) |
5395 | { | |
5396 | gdb_assert (cu->abbrev_table == NULL); | |
5397 | gdb_assert (cu->header.abbrev_offset.sect_off | |
5398 | == abbrev_table->offset.sect_off); | |
5399 | cu->abbrev_table = abbrev_table; | |
5400 | } | |
5401 | else if (cu->abbrev_table == NULL) | |
dee91e82 | 5402 | { |
4bdcc0c1 | 5403 | dwarf2_read_abbrevs (cu, abbrev_section); |
dee91e82 DE |
5404 | make_cleanup (dwarf2_free_abbrev_table, cu); |
5405 | } | |
42e7ad6c DE |
5406 | else if (rereading_dwo_cu) |
5407 | { | |
5408 | dwarf2_free_abbrev_table (cu); | |
5409 | dwarf2_read_abbrevs (cu, abbrev_section); | |
5410 | } | |
af703f96 | 5411 | |
dee91e82 | 5412 | /* Read the top level CU/TU die. */ |
3019eac3 | 5413 | init_cu_die_reader (&reader, cu, section, NULL); |
dee91e82 | 5414 | info_ptr = read_full_die (&reader, &comp_unit_die, info_ptr, &has_children); |
93311388 | 5415 | |
b0c7bfa9 DE |
5416 | /* If we are in a DWO stub, process it and then read in the "real" CU/TU |
5417 | from the DWO file. | |
5418 | Note that if USE_EXISTING_OK != 0, and THIS_CU->cu already contains a | |
5419 | DWO CU, that this test will fail (the attribute will not be present). */ | |
3019eac3 DE |
5420 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_name, cu); |
5421 | if (attr) | |
5422 | { | |
3019eac3 | 5423 | struct dwo_unit *dwo_unit; |
b0c7bfa9 | 5424 | struct die_info *dwo_comp_unit_die; |
3019eac3 DE |
5425 | |
5426 | if (has_children) | |
6a506a2d DE |
5427 | { |
5428 | complaint (&symfile_complaints, | |
5429 | _("compilation unit with DW_AT_GNU_dwo_name" | |
5430 | " has children (offset 0x%x) [in module %s]"), | |
5431 | this_cu->offset.sect_off, bfd_get_filename (abfd)); | |
5432 | } | |
b0c7bfa9 | 5433 | dwo_unit = lookup_dwo_unit (this_cu, comp_unit_die); |
6a506a2d | 5434 | if (dwo_unit != NULL) |
3019eac3 | 5435 | { |
6a506a2d DE |
5436 | if (read_cutu_die_from_dwo (this_cu, dwo_unit, |
5437 | abbrev_table != NULL, | |
a2ce51a0 | 5438 | comp_unit_die, NULL, |
6a506a2d DE |
5439 | &reader, &info_ptr, |
5440 | &dwo_comp_unit_die, &has_children) == 0) | |
5441 | { | |
5442 | /* Dummy die. */ | |
5443 | do_cleanups (cleanups); | |
5444 | return; | |
5445 | } | |
5446 | comp_unit_die = dwo_comp_unit_die; | |
5447 | } | |
5448 | else | |
5449 | { | |
5450 | /* Yikes, we couldn't find the rest of the DIE, we only have | |
5451 | the stub. A complaint has already been logged. There's | |
5452 | not much more we can do except pass on the stub DIE to | |
5453 | die_reader_func. We don't want to throw an error on bad | |
5454 | debug info. */ | |
3019eac3 DE |
5455 | } |
5456 | } | |
5457 | ||
b0c7bfa9 | 5458 | /* All of the above is setup for this call. Yikes. */ |
dee91e82 DE |
5459 | die_reader_func (&reader, info_ptr, comp_unit_die, has_children, data); |
5460 | ||
b0c7bfa9 | 5461 | /* Done, clean up. */ |
365156ad | 5462 | if (free_cu_cleanup != NULL) |
348e048f | 5463 | { |
365156ad TT |
5464 | if (keep) |
5465 | { | |
5466 | /* We've successfully allocated this compilation unit. Let our | |
5467 | caller clean it up when finished with it. */ | |
5468 | discard_cleanups (free_cu_cleanup); | |
dee91e82 | 5469 | |
365156ad TT |
5470 | /* We can only discard free_cu_cleanup and all subsequent cleanups. |
5471 | So we have to manually free the abbrev table. */ | |
5472 | dwarf2_free_abbrev_table (cu); | |
dee91e82 | 5473 | |
365156ad TT |
5474 | /* Link this CU into read_in_chain. */ |
5475 | this_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
5476 | dwarf2_per_objfile->read_in_chain = this_cu; | |
5477 | } | |
5478 | else | |
5479 | do_cleanups (free_cu_cleanup); | |
348e048f | 5480 | } |
365156ad TT |
5481 | |
5482 | do_cleanups (cleanups); | |
dee91e82 DE |
5483 | } |
5484 | ||
3019eac3 DE |
5485 | /* Read CU/TU THIS_CU in section SECTION, |
5486 | but do not follow DW_AT_GNU_dwo_name if present. | |
80626a55 DE |
5487 | DWOP_FILE, if non-NULL, is the DWO/DWP file to read (the caller is assumed |
5488 | to have already done the lookup to find the DWO/DWP file). | |
dee91e82 DE |
5489 | |
5490 | The caller is required to fill in THIS_CU->section, THIS_CU->offset, and | |
3019eac3 | 5491 | THIS_CU->is_debug_types, but nothing else. |
dee91e82 DE |
5492 | |
5493 | We fill in THIS_CU->length. | |
5494 | ||
5495 | WARNING: If THIS_CU is a "dummy CU" (used as filler by the incremental | |
5496 | linker) then DIE_READER_FUNC will not get called. | |
5497 | ||
5498 | THIS_CU->cu is always freed when done. | |
3019eac3 DE |
5499 | This is done in order to not leave THIS_CU->cu in a state where we have |
5500 | to care whether it refers to the "main" CU or the DWO CU. */ | |
dee91e82 DE |
5501 | |
5502 | static void | |
5503 | init_cutu_and_read_dies_no_follow (struct dwarf2_per_cu_data *this_cu, | |
5504 | struct dwarf2_section_info *abbrev_section, | |
3019eac3 | 5505 | struct dwo_file *dwo_file, |
dee91e82 DE |
5506 | die_reader_func_ftype *die_reader_func, |
5507 | void *data) | |
5508 | { | |
5509 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
8a0459fd | 5510 | struct dwarf2_section_info *section = this_cu->section; |
a32a8923 | 5511 | bfd *abfd = get_section_bfd_owner (section); |
dee91e82 | 5512 | struct dwarf2_cu cu; |
d521ce57 | 5513 | const gdb_byte *begin_info_ptr, *info_ptr; |
dee91e82 DE |
5514 | struct die_reader_specs reader; |
5515 | struct cleanup *cleanups; | |
5516 | struct die_info *comp_unit_die; | |
5517 | int has_children; | |
5518 | ||
09406207 DE |
5519 | if (dwarf2_die_debug) |
5520 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset 0x%x\n", | |
5521 | this_cu->is_debug_types ? "type" : "comp", | |
5522 | this_cu->offset.sect_off); | |
5523 | ||
dee91e82 DE |
5524 | gdb_assert (this_cu->cu == NULL); |
5525 | ||
dee91e82 DE |
5526 | /* This is cheap if the section is already read in. */ |
5527 | dwarf2_read_section (objfile, section); | |
5528 | ||
5529 | init_one_comp_unit (&cu, this_cu); | |
5530 | ||
5531 | cleanups = make_cleanup (free_stack_comp_unit, &cu); | |
5532 | ||
5533 | begin_info_ptr = info_ptr = section->buffer + this_cu->offset.sect_off; | |
4bdcc0c1 DE |
5534 | info_ptr = read_and_check_comp_unit_head (&cu.header, section, |
5535 | abbrev_section, info_ptr, | |
3019eac3 | 5536 | this_cu->is_debug_types); |
dee91e82 | 5537 | |
1ce1cefd | 5538 | this_cu->length = get_cu_length (&cu.header); |
dee91e82 DE |
5539 | |
5540 | /* Skip dummy compilation units. */ | |
5541 | if (info_ptr >= begin_info_ptr + this_cu->length | |
5542 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
c906108c | 5543 | { |
dee91e82 | 5544 | do_cleanups (cleanups); |
21b2bd31 | 5545 | return; |
93311388 | 5546 | } |
72bf9492 | 5547 | |
dee91e82 DE |
5548 | dwarf2_read_abbrevs (&cu, abbrev_section); |
5549 | make_cleanup (dwarf2_free_abbrev_table, &cu); | |
5550 | ||
3019eac3 | 5551 | init_cu_die_reader (&reader, &cu, section, dwo_file); |
dee91e82 DE |
5552 | info_ptr = read_full_die (&reader, &comp_unit_die, info_ptr, &has_children); |
5553 | ||
5554 | die_reader_func (&reader, info_ptr, comp_unit_die, has_children, data); | |
5555 | ||
5556 | do_cleanups (cleanups); | |
5557 | } | |
5558 | ||
3019eac3 DE |
5559 | /* Read a CU/TU, except that this does not look for DW_AT_GNU_dwo_name and |
5560 | does not lookup the specified DWO file. | |
5561 | This cannot be used to read DWO files. | |
dee91e82 DE |
5562 | |
5563 | THIS_CU->cu is always freed when done. | |
3019eac3 DE |
5564 | This is done in order to not leave THIS_CU->cu in a state where we have |
5565 | to care whether it refers to the "main" CU or the DWO CU. | |
5566 | We can revisit this if the data shows there's a performance issue. */ | |
dee91e82 DE |
5567 | |
5568 | static void | |
5569 | init_cutu_and_read_dies_simple (struct dwarf2_per_cu_data *this_cu, | |
5570 | die_reader_func_ftype *die_reader_func, | |
5571 | void *data) | |
5572 | { | |
5573 | init_cutu_and_read_dies_no_follow (this_cu, | |
36586728 | 5574 | get_abbrev_section_for_cu (this_cu), |
3019eac3 | 5575 | NULL, |
dee91e82 DE |
5576 | die_reader_func, data); |
5577 | } | |
0018ea6f DE |
5578 | \f |
5579 | /* Type Unit Groups. | |
dee91e82 | 5580 | |
0018ea6f DE |
5581 | Type Unit Groups are a way to collapse the set of all TUs (type units) into |
5582 | a more manageable set. The grouping is done by DW_AT_stmt_list entry | |
5583 | so that all types coming from the same compilation (.o file) are grouped | |
5584 | together. A future step could be to put the types in the same symtab as | |
5585 | the CU the types ultimately came from. */ | |
ff013f42 | 5586 | |
f4dc4d17 DE |
5587 | static hashval_t |
5588 | hash_type_unit_group (const void *item) | |
5589 | { | |
094b34ac | 5590 | const struct type_unit_group *tu_group = item; |
f4dc4d17 | 5591 | |
094b34ac | 5592 | return hash_stmt_list_entry (&tu_group->hash); |
f4dc4d17 | 5593 | } |
348e048f DE |
5594 | |
5595 | static int | |
f4dc4d17 | 5596 | eq_type_unit_group (const void *item_lhs, const void *item_rhs) |
348e048f | 5597 | { |
f4dc4d17 DE |
5598 | const struct type_unit_group *lhs = item_lhs; |
5599 | const struct type_unit_group *rhs = item_rhs; | |
348e048f | 5600 | |
094b34ac | 5601 | return eq_stmt_list_entry (&lhs->hash, &rhs->hash); |
f4dc4d17 | 5602 | } |
348e048f | 5603 | |
f4dc4d17 DE |
5604 | /* Allocate a hash table for type unit groups. */ |
5605 | ||
5606 | static htab_t | |
5607 | allocate_type_unit_groups_table (void) | |
5608 | { | |
5609 | return htab_create_alloc_ex (3, | |
5610 | hash_type_unit_group, | |
5611 | eq_type_unit_group, | |
5612 | NULL, | |
5613 | &dwarf2_per_objfile->objfile->objfile_obstack, | |
5614 | hashtab_obstack_allocate, | |
5615 | dummy_obstack_deallocate); | |
5616 | } | |
dee91e82 | 5617 | |
f4dc4d17 DE |
5618 | /* Type units that don't have DW_AT_stmt_list are grouped into their own |
5619 | partial symtabs. We combine several TUs per psymtab to not let the size | |
5620 | of any one psymtab grow too big. */ | |
5621 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB (1 << 31) | |
5622 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE 10 | |
dee91e82 | 5623 | |
094b34ac | 5624 | /* Helper routine for get_type_unit_group. |
f4dc4d17 DE |
5625 | Create the type_unit_group object used to hold one or more TUs. */ |
5626 | ||
5627 | static struct type_unit_group * | |
094b34ac | 5628 | create_type_unit_group (struct dwarf2_cu *cu, sect_offset line_offset_struct) |
f4dc4d17 DE |
5629 | { |
5630 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
094b34ac | 5631 | struct dwarf2_per_cu_data *per_cu; |
f4dc4d17 | 5632 | struct type_unit_group *tu_group; |
f4dc4d17 DE |
5633 | |
5634 | tu_group = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
5635 | struct type_unit_group); | |
094b34ac | 5636 | per_cu = &tu_group->per_cu; |
f4dc4d17 | 5637 | per_cu->objfile = objfile; |
f4dc4d17 | 5638 | |
094b34ac DE |
5639 | if (dwarf2_per_objfile->using_index) |
5640 | { | |
5641 | per_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
5642 | struct dwarf2_per_cu_quick_data); | |
094b34ac DE |
5643 | } |
5644 | else | |
5645 | { | |
5646 | unsigned int line_offset = line_offset_struct.sect_off; | |
5647 | struct partial_symtab *pst; | |
5648 | char *name; | |
5649 | ||
5650 | /* Give the symtab a useful name for debug purposes. */ | |
5651 | if ((line_offset & NO_STMT_LIST_TYPE_UNIT_PSYMTAB) != 0) | |
5652 | name = xstrprintf ("<type_units_%d>", | |
5653 | (line_offset & ~NO_STMT_LIST_TYPE_UNIT_PSYMTAB)); | |
5654 | else | |
5655 | name = xstrprintf ("<type_units_at_0x%x>", line_offset); | |
5656 | ||
5657 | pst = create_partial_symtab (per_cu, name); | |
5658 | pst->anonymous = 1; | |
f4dc4d17 | 5659 | |
094b34ac DE |
5660 | xfree (name); |
5661 | } | |
f4dc4d17 | 5662 | |
094b34ac DE |
5663 | tu_group->hash.dwo_unit = cu->dwo_unit; |
5664 | tu_group->hash.line_offset = line_offset_struct; | |
f4dc4d17 DE |
5665 | |
5666 | return tu_group; | |
5667 | } | |
5668 | ||
094b34ac DE |
5669 | /* Look up the type_unit_group for type unit CU, and create it if necessary. |
5670 | STMT_LIST is a DW_AT_stmt_list attribute. */ | |
f4dc4d17 DE |
5671 | |
5672 | static struct type_unit_group * | |
ff39bb5e | 5673 | get_type_unit_group (struct dwarf2_cu *cu, const struct attribute *stmt_list) |
f4dc4d17 DE |
5674 | { |
5675 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; | |
5676 | struct type_unit_group *tu_group; | |
5677 | void **slot; | |
5678 | unsigned int line_offset; | |
5679 | struct type_unit_group type_unit_group_for_lookup; | |
5680 | ||
5681 | if (dwarf2_per_objfile->type_unit_groups == NULL) | |
5682 | { | |
5683 | dwarf2_per_objfile->type_unit_groups = | |
5684 | allocate_type_unit_groups_table (); | |
5685 | } | |
5686 | ||
5687 | /* Do we need to create a new group, or can we use an existing one? */ | |
5688 | ||
5689 | if (stmt_list) | |
5690 | { | |
5691 | line_offset = DW_UNSND (stmt_list); | |
5692 | ++tu_stats->nr_symtab_sharers; | |
5693 | } | |
5694 | else | |
5695 | { | |
5696 | /* Ugh, no stmt_list. Rare, but we have to handle it. | |
5697 | We can do various things here like create one group per TU or | |
5698 | spread them over multiple groups to split up the expansion work. | |
5699 | To avoid worst case scenarios (too many groups or too large groups) | |
5700 | we, umm, group them in bunches. */ | |
5701 | line_offset = (NO_STMT_LIST_TYPE_UNIT_PSYMTAB | |
5702 | | (tu_stats->nr_stmt_less_type_units | |
5703 | / NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE)); | |
5704 | ++tu_stats->nr_stmt_less_type_units; | |
5705 | } | |
5706 | ||
094b34ac DE |
5707 | type_unit_group_for_lookup.hash.dwo_unit = cu->dwo_unit; |
5708 | type_unit_group_for_lookup.hash.line_offset.sect_off = line_offset; | |
f4dc4d17 DE |
5709 | slot = htab_find_slot (dwarf2_per_objfile->type_unit_groups, |
5710 | &type_unit_group_for_lookup, INSERT); | |
5711 | if (*slot != NULL) | |
5712 | { | |
5713 | tu_group = *slot; | |
5714 | gdb_assert (tu_group != NULL); | |
5715 | } | |
5716 | else | |
5717 | { | |
5718 | sect_offset line_offset_struct; | |
5719 | ||
5720 | line_offset_struct.sect_off = line_offset; | |
094b34ac | 5721 | tu_group = create_type_unit_group (cu, line_offset_struct); |
f4dc4d17 DE |
5722 | *slot = tu_group; |
5723 | ++tu_stats->nr_symtabs; | |
5724 | } | |
5725 | ||
5726 | return tu_group; | |
5727 | } | |
5728 | ||
5729 | /* Struct used to sort TUs by their abbreviation table offset. */ | |
5730 | ||
5731 | struct tu_abbrev_offset | |
5732 | { | |
5733 | struct signatured_type *sig_type; | |
5734 | sect_offset abbrev_offset; | |
5735 | }; | |
5736 | ||
5737 | /* Helper routine for build_type_unit_groups, passed to qsort. */ | |
5738 | ||
5739 | static int | |
5740 | sort_tu_by_abbrev_offset (const void *ap, const void *bp) | |
5741 | { | |
5742 | const struct tu_abbrev_offset * const *a = ap; | |
5743 | const struct tu_abbrev_offset * const *b = bp; | |
5744 | unsigned int aoff = (*a)->abbrev_offset.sect_off; | |
5745 | unsigned int boff = (*b)->abbrev_offset.sect_off; | |
5746 | ||
5747 | return (aoff > boff) - (aoff < boff); | |
5748 | } | |
5749 | ||
5750 | /* A helper function to add a type_unit_group to a table. */ | |
5751 | ||
5752 | static int | |
5753 | add_type_unit_group_to_table (void **slot, void *datum) | |
5754 | { | |
5755 | struct type_unit_group *tu_group = *slot; | |
5756 | struct type_unit_group ***datap = datum; | |
5757 | ||
5758 | **datap = tu_group; | |
5759 | ++*datap; | |
5760 | ||
5761 | return 1; | |
5762 | } | |
5763 | ||
5764 | /* Efficiently read all the type units, calling init_cutu_and_read_dies on | |
5765 | each one passing FUNC,DATA. | |
5766 | ||
5767 | The efficiency is because we sort TUs by the abbrev table they use and | |
5768 | only read each abbrev table once. In one program there are 200K TUs | |
5769 | sharing 8K abbrev tables. | |
5770 | ||
5771 | The main purpose of this function is to support building the | |
5772 | dwarf2_per_objfile->type_unit_groups table. | |
5773 | TUs typically share the DW_AT_stmt_list of the CU they came from, so we | |
5774 | can collapse the search space by grouping them by stmt_list. | |
5775 | The savings can be significant, in the same program from above the 200K TUs | |
5776 | share 8K stmt_list tables. | |
5777 | ||
5778 | FUNC is expected to call get_type_unit_group, which will create the | |
5779 | struct type_unit_group if necessary and add it to | |
5780 | dwarf2_per_objfile->type_unit_groups. */ | |
5781 | ||
5782 | static void | |
5783 | build_type_unit_groups (die_reader_func_ftype *func, void *data) | |
5784 | { | |
5785 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
5786 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; | |
5787 | struct cleanup *cleanups; | |
5788 | struct abbrev_table *abbrev_table; | |
5789 | sect_offset abbrev_offset; | |
5790 | struct tu_abbrev_offset *sorted_by_abbrev; | |
5791 | struct type_unit_group **iter; | |
5792 | int i; | |
5793 | ||
5794 | /* It's up to the caller to not call us multiple times. */ | |
5795 | gdb_assert (dwarf2_per_objfile->type_unit_groups == NULL); | |
5796 | ||
5797 | if (dwarf2_per_objfile->n_type_units == 0) | |
5798 | return; | |
5799 | ||
5800 | /* TUs typically share abbrev tables, and there can be way more TUs than | |
5801 | abbrev tables. Sort by abbrev table to reduce the number of times we | |
5802 | read each abbrev table in. | |
5803 | Alternatives are to punt or to maintain a cache of abbrev tables. | |
5804 | This is simpler and efficient enough for now. | |
5805 | ||
5806 | Later we group TUs by their DW_AT_stmt_list value (as this defines the | |
5807 | symtab to use). Typically TUs with the same abbrev offset have the same | |
5808 | stmt_list value too so in practice this should work well. | |
5809 | ||
5810 | The basic algorithm here is: | |
5811 | ||
5812 | sort TUs by abbrev table | |
5813 | for each TU with same abbrev table: | |
5814 | read abbrev table if first user | |
5815 | read TU top level DIE | |
5816 | [IWBN if DWO skeletons had DW_AT_stmt_list] | |
5817 | call FUNC */ | |
5818 | ||
5819 | if (dwarf2_read_debug) | |
5820 | fprintf_unfiltered (gdb_stdlog, "Building type unit groups ...\n"); | |
5821 | ||
5822 | /* Sort in a separate table to maintain the order of all_type_units | |
5823 | for .gdb_index: TU indices directly index all_type_units. */ | |
5824 | sorted_by_abbrev = XNEWVEC (struct tu_abbrev_offset, | |
5825 | dwarf2_per_objfile->n_type_units); | |
5826 | for (i = 0; i < dwarf2_per_objfile->n_type_units; ++i) | |
5827 | { | |
5828 | struct signatured_type *sig_type = dwarf2_per_objfile->all_type_units[i]; | |
5829 | ||
5830 | sorted_by_abbrev[i].sig_type = sig_type; | |
5831 | sorted_by_abbrev[i].abbrev_offset = | |
8a0459fd | 5832 | read_abbrev_offset (sig_type->per_cu.section, |
f4dc4d17 DE |
5833 | sig_type->per_cu.offset); |
5834 | } | |
5835 | cleanups = make_cleanup (xfree, sorted_by_abbrev); | |
5836 | qsort (sorted_by_abbrev, dwarf2_per_objfile->n_type_units, | |
5837 | sizeof (struct tu_abbrev_offset), sort_tu_by_abbrev_offset); | |
5838 | ||
094b34ac DE |
5839 | /* Note: In the .gdb_index case, get_type_unit_group may have already been |
5840 | called any number of times, so we don't reset tu_stats here. */ | |
5841 | ||
f4dc4d17 DE |
5842 | abbrev_offset.sect_off = ~(unsigned) 0; |
5843 | abbrev_table = NULL; | |
5844 | make_cleanup (abbrev_table_free_cleanup, &abbrev_table); | |
5845 | ||
5846 | for (i = 0; i < dwarf2_per_objfile->n_type_units; ++i) | |
5847 | { | |
5848 | const struct tu_abbrev_offset *tu = &sorted_by_abbrev[i]; | |
5849 | ||
5850 | /* Switch to the next abbrev table if necessary. */ | |
5851 | if (abbrev_table == NULL | |
5852 | || tu->abbrev_offset.sect_off != abbrev_offset.sect_off) | |
5853 | { | |
5854 | if (abbrev_table != NULL) | |
5855 | { | |
5856 | abbrev_table_free (abbrev_table); | |
5857 | /* Reset to NULL in case abbrev_table_read_table throws | |
5858 | an error: abbrev_table_free_cleanup will get called. */ | |
5859 | abbrev_table = NULL; | |
5860 | } | |
5861 | abbrev_offset = tu->abbrev_offset; | |
5862 | abbrev_table = | |
5863 | abbrev_table_read_table (&dwarf2_per_objfile->abbrev, | |
5864 | abbrev_offset); | |
5865 | ++tu_stats->nr_uniq_abbrev_tables; | |
5866 | } | |
5867 | ||
5868 | init_cutu_and_read_dies (&tu->sig_type->per_cu, abbrev_table, 0, 0, | |
5869 | func, data); | |
5870 | } | |
5871 | ||
a2ce51a0 DE |
5872 | /* type_unit_groups can be NULL if there is an error in the debug info. |
5873 | Just create an empty table so the rest of gdb doesn't have to watch | |
5874 | for this error case. */ | |
5875 | if (dwarf2_per_objfile->type_unit_groups == NULL) | |
5876 | { | |
5877 | dwarf2_per_objfile->type_unit_groups = | |
5878 | allocate_type_unit_groups_table (); | |
5879 | dwarf2_per_objfile->n_type_unit_groups = 0; | |
5880 | } | |
5881 | ||
f4dc4d17 DE |
5882 | /* Create a vector of pointers to primary type units to make it easy to |
5883 | iterate over them and CUs. See dw2_get_primary_cu. */ | |
5884 | dwarf2_per_objfile->n_type_unit_groups = | |
5885 | htab_elements (dwarf2_per_objfile->type_unit_groups); | |
5886 | dwarf2_per_objfile->all_type_unit_groups = | |
5887 | obstack_alloc (&objfile->objfile_obstack, | |
5888 | dwarf2_per_objfile->n_type_unit_groups | |
5889 | * sizeof (struct type_unit_group *)); | |
5890 | iter = &dwarf2_per_objfile->all_type_unit_groups[0]; | |
5891 | htab_traverse_noresize (dwarf2_per_objfile->type_unit_groups, | |
5892 | add_type_unit_group_to_table, &iter); | |
5893 | gdb_assert (iter - &dwarf2_per_objfile->all_type_unit_groups[0] | |
5894 | == dwarf2_per_objfile->n_type_unit_groups); | |
5895 | ||
5896 | do_cleanups (cleanups); | |
5897 | ||
5898 | if (dwarf2_read_debug) | |
5899 | { | |
5900 | fprintf_unfiltered (gdb_stdlog, "Done building type unit groups:\n"); | |
5901 | fprintf_unfiltered (gdb_stdlog, " %d TUs\n", | |
5902 | dwarf2_per_objfile->n_type_units); | |
5903 | fprintf_unfiltered (gdb_stdlog, " %d uniq abbrev tables\n", | |
5904 | tu_stats->nr_uniq_abbrev_tables); | |
5905 | fprintf_unfiltered (gdb_stdlog, " %d symtabs from stmt_list entries\n", | |
5906 | tu_stats->nr_symtabs); | |
5907 | fprintf_unfiltered (gdb_stdlog, " %d symtab sharers\n", | |
5908 | tu_stats->nr_symtab_sharers); | |
5909 | fprintf_unfiltered (gdb_stdlog, " %d type units without a stmt_list\n", | |
5910 | tu_stats->nr_stmt_less_type_units); | |
5911 | } | |
5912 | } | |
0018ea6f DE |
5913 | \f |
5914 | /* Partial symbol tables. */ | |
5915 | ||
5916 | /* Create a psymtab named NAME and assign it to PER_CU. | |
5917 | ||
5918 | The caller must fill in the following details: | |
5919 | dirname, textlow, texthigh. */ | |
5920 | ||
5921 | static struct partial_symtab * | |
5922 | create_partial_symtab (struct dwarf2_per_cu_data *per_cu, const char *name) | |
5923 | { | |
5924 | struct objfile *objfile = per_cu->objfile; | |
5925 | struct partial_symtab *pst; | |
5926 | ||
5927 | pst = start_psymtab_common (objfile, objfile->section_offsets, | |
5928 | name, 0, | |
5929 | objfile->global_psymbols.next, | |
5930 | objfile->static_psymbols.next); | |
5931 | ||
5932 | pst->psymtabs_addrmap_supported = 1; | |
5933 | ||
5934 | /* This is the glue that links PST into GDB's symbol API. */ | |
5935 | pst->read_symtab_private = per_cu; | |
5936 | pst->read_symtab = dwarf2_read_symtab; | |
5937 | per_cu->v.psymtab = pst; | |
5938 | ||
5939 | return pst; | |
5940 | } | |
5941 | ||
b93601f3 TT |
5942 | /* The DATA object passed to process_psymtab_comp_unit_reader has this |
5943 | type. */ | |
5944 | ||
5945 | struct process_psymtab_comp_unit_data | |
5946 | { | |
5947 | /* True if we are reading a DW_TAG_partial_unit. */ | |
5948 | ||
5949 | int want_partial_unit; | |
5950 | ||
5951 | /* The "pretend" language that is used if the CU doesn't declare a | |
5952 | language. */ | |
5953 | ||
5954 | enum language pretend_language; | |
5955 | }; | |
5956 | ||
0018ea6f DE |
5957 | /* die_reader_func for process_psymtab_comp_unit. */ |
5958 | ||
5959 | static void | |
5960 | process_psymtab_comp_unit_reader (const struct die_reader_specs *reader, | |
d521ce57 | 5961 | const gdb_byte *info_ptr, |
0018ea6f DE |
5962 | struct die_info *comp_unit_die, |
5963 | int has_children, | |
5964 | void *data) | |
5965 | { | |
5966 | struct dwarf2_cu *cu = reader->cu; | |
5967 | struct objfile *objfile = cu->objfile; | |
5968 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; | |
5969 | struct attribute *attr; | |
5970 | CORE_ADDR baseaddr; | |
5971 | CORE_ADDR best_lowpc = 0, best_highpc = 0; | |
5972 | struct partial_symtab *pst; | |
5973 | int has_pc_info; | |
5974 | const char *filename; | |
b93601f3 | 5975 | struct process_psymtab_comp_unit_data *info = data; |
0018ea6f | 5976 | |
b93601f3 | 5977 | if (comp_unit_die->tag == DW_TAG_partial_unit && !info->want_partial_unit) |
0018ea6f DE |
5978 | return; |
5979 | ||
5980 | gdb_assert (! per_cu->is_debug_types); | |
5981 | ||
b93601f3 | 5982 | prepare_one_comp_unit (cu, comp_unit_die, info->pretend_language); |
0018ea6f DE |
5983 | |
5984 | cu->list_in_scope = &file_symbols; | |
5985 | ||
5986 | /* Allocate a new partial symbol table structure. */ | |
5987 | attr = dwarf2_attr (comp_unit_die, DW_AT_name, cu); | |
5988 | if (attr == NULL || !DW_STRING (attr)) | |
5989 | filename = ""; | |
5990 | else | |
5991 | filename = DW_STRING (attr); | |
5992 | ||
5993 | pst = create_partial_symtab (per_cu, filename); | |
5994 | ||
5995 | /* This must be done before calling dwarf2_build_include_psymtabs. */ | |
5996 | attr = dwarf2_attr (comp_unit_die, DW_AT_comp_dir, cu); | |
5997 | if (attr != NULL) | |
5998 | pst->dirname = DW_STRING (attr); | |
5999 | ||
6000 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
6001 | ||
6002 | dwarf2_find_base_address (comp_unit_die, cu); | |
6003 | ||
6004 | /* Possibly set the default values of LOWPC and HIGHPC from | |
6005 | `DW_AT_ranges'. */ | |
6006 | has_pc_info = dwarf2_get_pc_bounds (comp_unit_die, &best_lowpc, | |
6007 | &best_highpc, cu, pst); | |
6008 | if (has_pc_info == 1 && best_lowpc < best_highpc) | |
6009 | /* Store the contiguous range if it is not empty; it can be empty for | |
6010 | CUs with no code. */ | |
6011 | addrmap_set_empty (objfile->psymtabs_addrmap, | |
6012 | best_lowpc + baseaddr, | |
6013 | best_highpc + baseaddr - 1, pst); | |
6014 | ||
6015 | /* Check if comp unit has_children. | |
6016 | If so, read the rest of the partial symbols from this comp unit. | |
6017 | If not, there's no more debug_info for this comp unit. */ | |
6018 | if (has_children) | |
6019 | { | |
6020 | struct partial_die_info *first_die; | |
6021 | CORE_ADDR lowpc, highpc; | |
6022 | ||
6023 | lowpc = ((CORE_ADDR) -1); | |
6024 | highpc = ((CORE_ADDR) 0); | |
6025 | ||
6026 | first_die = load_partial_dies (reader, info_ptr, 1); | |
6027 | ||
6028 | scan_partial_symbols (first_die, &lowpc, &highpc, | |
6029 | ! has_pc_info, cu); | |
6030 | ||
6031 | /* If we didn't find a lowpc, set it to highpc to avoid | |
6032 | complaints from `maint check'. */ | |
6033 | if (lowpc == ((CORE_ADDR) -1)) | |
6034 | lowpc = highpc; | |
6035 | ||
6036 | /* If the compilation unit didn't have an explicit address range, | |
6037 | then use the information extracted from its child dies. */ | |
6038 | if (! has_pc_info) | |
6039 | { | |
6040 | best_lowpc = lowpc; | |
6041 | best_highpc = highpc; | |
6042 | } | |
6043 | } | |
6044 | pst->textlow = best_lowpc + baseaddr; | |
6045 | pst->texthigh = best_highpc + baseaddr; | |
6046 | ||
6047 | pst->n_global_syms = objfile->global_psymbols.next - | |
6048 | (objfile->global_psymbols.list + pst->globals_offset); | |
6049 | pst->n_static_syms = objfile->static_psymbols.next - | |
6050 | (objfile->static_psymbols.list + pst->statics_offset); | |
6051 | sort_pst_symbols (objfile, pst); | |
6052 | ||
6053 | if (!VEC_empty (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs)) | |
6054 | { | |
6055 | int i; | |
6056 | int len = VEC_length (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs); | |
6057 | struct dwarf2_per_cu_data *iter; | |
6058 | ||
6059 | /* Fill in 'dependencies' here; we fill in 'users' in a | |
6060 | post-pass. */ | |
6061 | pst->number_of_dependencies = len; | |
6062 | pst->dependencies = obstack_alloc (&objfile->objfile_obstack, | |
6063 | len * sizeof (struct symtab *)); | |
6064 | for (i = 0; | |
6065 | VEC_iterate (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs, | |
6066 | i, iter); | |
6067 | ++i) | |
6068 | pst->dependencies[i] = iter->v.psymtab; | |
6069 | ||
6070 | VEC_free (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs); | |
6071 | } | |
6072 | ||
6073 | /* Get the list of files included in the current compilation unit, | |
6074 | and build a psymtab for each of them. */ | |
6075 | dwarf2_build_include_psymtabs (cu, comp_unit_die, pst); | |
6076 | ||
6077 | if (dwarf2_read_debug) | |
6078 | { | |
6079 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
6080 | ||
6081 | fprintf_unfiltered (gdb_stdlog, | |
6082 | "Psymtab for %s unit @0x%x: %s - %s" | |
6083 | ", %d global, %d static syms\n", | |
6084 | per_cu->is_debug_types ? "type" : "comp", | |
6085 | per_cu->offset.sect_off, | |
6086 | paddress (gdbarch, pst->textlow), | |
6087 | paddress (gdbarch, pst->texthigh), | |
6088 | pst->n_global_syms, pst->n_static_syms); | |
6089 | } | |
6090 | } | |
6091 | ||
6092 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
6093 | Process compilation unit THIS_CU for a psymtab. */ | |
6094 | ||
6095 | static void | |
6096 | process_psymtab_comp_unit (struct dwarf2_per_cu_data *this_cu, | |
b93601f3 TT |
6097 | int want_partial_unit, |
6098 | enum language pretend_language) | |
0018ea6f | 6099 | { |
b93601f3 TT |
6100 | struct process_psymtab_comp_unit_data info; |
6101 | ||
0018ea6f DE |
6102 | /* If this compilation unit was already read in, free the |
6103 | cached copy in order to read it in again. This is | |
6104 | necessary because we skipped some symbols when we first | |
6105 | read in the compilation unit (see load_partial_dies). | |
6106 | This problem could be avoided, but the benefit is unclear. */ | |
6107 | if (this_cu->cu != NULL) | |
6108 | free_one_cached_comp_unit (this_cu); | |
6109 | ||
6110 | gdb_assert (! this_cu->is_debug_types); | |
b93601f3 TT |
6111 | info.want_partial_unit = want_partial_unit; |
6112 | info.pretend_language = pretend_language; | |
0018ea6f DE |
6113 | init_cutu_and_read_dies (this_cu, NULL, 0, 0, |
6114 | process_psymtab_comp_unit_reader, | |
b93601f3 | 6115 | &info); |
0018ea6f DE |
6116 | |
6117 | /* Age out any secondary CUs. */ | |
6118 | age_cached_comp_units (); | |
6119 | } | |
f4dc4d17 DE |
6120 | |
6121 | /* Reader function for build_type_psymtabs. */ | |
6122 | ||
6123 | static void | |
6124 | build_type_psymtabs_reader (const struct die_reader_specs *reader, | |
d521ce57 | 6125 | const gdb_byte *info_ptr, |
f4dc4d17 DE |
6126 | struct die_info *type_unit_die, |
6127 | int has_children, | |
6128 | void *data) | |
6129 | { | |
6130 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
6131 | struct dwarf2_cu *cu = reader->cu; | |
6132 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; | |
0186c6a7 | 6133 | struct signatured_type *sig_type; |
f4dc4d17 DE |
6134 | struct type_unit_group *tu_group; |
6135 | struct attribute *attr; | |
6136 | struct partial_die_info *first_die; | |
6137 | CORE_ADDR lowpc, highpc; | |
6138 | struct partial_symtab *pst; | |
6139 | ||
6140 | gdb_assert (data == NULL); | |
0186c6a7 DE |
6141 | gdb_assert (per_cu->is_debug_types); |
6142 | sig_type = (struct signatured_type *) per_cu; | |
f4dc4d17 DE |
6143 | |
6144 | if (! has_children) | |
6145 | return; | |
6146 | ||
6147 | attr = dwarf2_attr_no_follow (type_unit_die, DW_AT_stmt_list); | |
094b34ac | 6148 | tu_group = get_type_unit_group (cu, attr); |
f4dc4d17 | 6149 | |
0186c6a7 | 6150 | VEC_safe_push (sig_type_ptr, tu_group->tus, sig_type); |
f4dc4d17 DE |
6151 | |
6152 | prepare_one_comp_unit (cu, type_unit_die, language_minimal); | |
6153 | cu->list_in_scope = &file_symbols; | |
6154 | pst = create_partial_symtab (per_cu, ""); | |
6155 | pst->anonymous = 1; | |
6156 | ||
6157 | first_die = load_partial_dies (reader, info_ptr, 1); | |
6158 | ||
6159 | lowpc = (CORE_ADDR) -1; | |
6160 | highpc = (CORE_ADDR) 0; | |
6161 | scan_partial_symbols (first_die, &lowpc, &highpc, 0, cu); | |
6162 | ||
6163 | pst->n_global_syms = objfile->global_psymbols.next - | |
6164 | (objfile->global_psymbols.list + pst->globals_offset); | |
6165 | pst->n_static_syms = objfile->static_psymbols.next - | |
6166 | (objfile->static_psymbols.list + pst->statics_offset); | |
5c80ed9d | 6167 | sort_pst_symbols (objfile, pst); |
f4dc4d17 DE |
6168 | } |
6169 | ||
6170 | /* Traversal function for build_type_psymtabs. */ | |
6171 | ||
6172 | static int | |
6173 | build_type_psymtab_dependencies (void **slot, void *info) | |
6174 | { | |
6175 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
6176 | struct type_unit_group *tu_group = (struct type_unit_group *) *slot; | |
094b34ac | 6177 | struct dwarf2_per_cu_data *per_cu = &tu_group->per_cu; |
f4dc4d17 | 6178 | struct partial_symtab *pst = per_cu->v.psymtab; |
0186c6a7 DE |
6179 | int len = VEC_length (sig_type_ptr, tu_group->tus); |
6180 | struct signatured_type *iter; | |
f4dc4d17 DE |
6181 | int i; |
6182 | ||
6183 | gdb_assert (len > 0); | |
0186c6a7 | 6184 | gdb_assert (IS_TYPE_UNIT_GROUP (per_cu)); |
f4dc4d17 DE |
6185 | |
6186 | pst->number_of_dependencies = len; | |
6187 | pst->dependencies = obstack_alloc (&objfile->objfile_obstack, | |
6188 | len * sizeof (struct psymtab *)); | |
6189 | for (i = 0; | |
0186c6a7 | 6190 | VEC_iterate (sig_type_ptr, tu_group->tus, i, iter); |
f4dc4d17 DE |
6191 | ++i) |
6192 | { | |
0186c6a7 DE |
6193 | gdb_assert (iter->per_cu.is_debug_types); |
6194 | pst->dependencies[i] = iter->per_cu.v.psymtab; | |
796a7ff8 | 6195 | iter->type_unit_group = tu_group; |
f4dc4d17 DE |
6196 | } |
6197 | ||
0186c6a7 | 6198 | VEC_free (sig_type_ptr, tu_group->tus); |
348e048f DE |
6199 | |
6200 | return 1; | |
6201 | } | |
6202 | ||
6203 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
6204 | Build partial symbol tables for the .debug_types comp-units. */ | |
6205 | ||
6206 | static void | |
6207 | build_type_psymtabs (struct objfile *objfile) | |
6208 | { | |
0e50663e | 6209 | if (! create_all_type_units (objfile)) |
348e048f DE |
6210 | return; |
6211 | ||
f4dc4d17 DE |
6212 | build_type_unit_groups (build_type_psymtabs_reader, NULL); |
6213 | ||
6214 | /* Now that all TUs have been processed we can fill in the dependencies. */ | |
6215 | htab_traverse_noresize (dwarf2_per_objfile->type_unit_groups, | |
6216 | build_type_psymtab_dependencies, NULL); | |
348e048f DE |
6217 | } |
6218 | ||
60606b2c TT |
6219 | /* A cleanup function that clears objfile's psymtabs_addrmap field. */ |
6220 | ||
6221 | static void | |
6222 | psymtabs_addrmap_cleanup (void *o) | |
6223 | { | |
6224 | struct objfile *objfile = o; | |
ec61707d | 6225 | |
60606b2c TT |
6226 | objfile->psymtabs_addrmap = NULL; |
6227 | } | |
6228 | ||
95554aad TT |
6229 | /* Compute the 'user' field for each psymtab in OBJFILE. */ |
6230 | ||
6231 | static void | |
6232 | set_partial_user (struct objfile *objfile) | |
6233 | { | |
6234 | int i; | |
6235 | ||
6236 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) | |
6237 | { | |
6238 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); | |
6239 | struct partial_symtab *pst = per_cu->v.psymtab; | |
6240 | int j; | |
6241 | ||
36586728 TT |
6242 | if (pst == NULL) |
6243 | continue; | |
6244 | ||
95554aad TT |
6245 | for (j = 0; j < pst->number_of_dependencies; ++j) |
6246 | { | |
6247 | /* Set the 'user' field only if it is not already set. */ | |
6248 | if (pst->dependencies[j]->user == NULL) | |
6249 | pst->dependencies[j]->user = pst; | |
6250 | } | |
6251 | } | |
6252 | } | |
6253 | ||
93311388 DE |
6254 | /* Build the partial symbol table by doing a quick pass through the |
6255 | .debug_info and .debug_abbrev sections. */ | |
72bf9492 | 6256 | |
93311388 | 6257 | static void |
c67a9c90 | 6258 | dwarf2_build_psymtabs_hard (struct objfile *objfile) |
93311388 | 6259 | { |
60606b2c TT |
6260 | struct cleanup *back_to, *addrmap_cleanup; |
6261 | struct obstack temp_obstack; | |
21b2bd31 | 6262 | int i; |
93311388 | 6263 | |
45cfd468 DE |
6264 | if (dwarf2_read_debug) |
6265 | { | |
6266 | fprintf_unfiltered (gdb_stdlog, "Building psymtabs of objfile %s ...\n", | |
4262abfb | 6267 | objfile_name (objfile)); |
45cfd468 DE |
6268 | } |
6269 | ||
98bfdba5 PA |
6270 | dwarf2_per_objfile->reading_partial_symbols = 1; |
6271 | ||
be391dca | 6272 | dwarf2_read_section (objfile, &dwarf2_per_objfile->info); |
91c24f0a | 6273 | |
93311388 DE |
6274 | /* Any cached compilation units will be linked by the per-objfile |
6275 | read_in_chain. Make sure to free them when we're done. */ | |
6276 | back_to = make_cleanup (free_cached_comp_units, NULL); | |
72bf9492 | 6277 | |
348e048f DE |
6278 | build_type_psymtabs (objfile); |
6279 | ||
93311388 | 6280 | create_all_comp_units (objfile); |
c906108c | 6281 | |
60606b2c TT |
6282 | /* Create a temporary address map on a temporary obstack. We later |
6283 | copy this to the final obstack. */ | |
6284 | obstack_init (&temp_obstack); | |
6285 | make_cleanup_obstack_free (&temp_obstack); | |
6286 | objfile->psymtabs_addrmap = addrmap_create_mutable (&temp_obstack); | |
6287 | addrmap_cleanup = make_cleanup (psymtabs_addrmap_cleanup, objfile); | |
72bf9492 | 6288 | |
21b2bd31 | 6289 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
93311388 | 6290 | { |
21b2bd31 | 6291 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
aaa75496 | 6292 | |
b93601f3 | 6293 | process_psymtab_comp_unit (per_cu, 0, language_minimal); |
c906108c | 6294 | } |
ff013f42 | 6295 | |
95554aad TT |
6296 | set_partial_user (objfile); |
6297 | ||
ff013f42 JK |
6298 | objfile->psymtabs_addrmap = addrmap_create_fixed (objfile->psymtabs_addrmap, |
6299 | &objfile->objfile_obstack); | |
60606b2c | 6300 | discard_cleanups (addrmap_cleanup); |
ff013f42 | 6301 | |
ae038cb0 | 6302 | do_cleanups (back_to); |
45cfd468 DE |
6303 | |
6304 | if (dwarf2_read_debug) | |
6305 | fprintf_unfiltered (gdb_stdlog, "Done building psymtabs of %s\n", | |
4262abfb | 6306 | objfile_name (objfile)); |
ae038cb0 DJ |
6307 | } |
6308 | ||
3019eac3 | 6309 | /* die_reader_func for load_partial_comp_unit. */ |
ae038cb0 DJ |
6310 | |
6311 | static void | |
dee91e82 | 6312 | load_partial_comp_unit_reader (const struct die_reader_specs *reader, |
d521ce57 | 6313 | const gdb_byte *info_ptr, |
dee91e82 DE |
6314 | struct die_info *comp_unit_die, |
6315 | int has_children, | |
6316 | void *data) | |
ae038cb0 | 6317 | { |
dee91e82 | 6318 | struct dwarf2_cu *cu = reader->cu; |
ae038cb0 | 6319 | |
95554aad | 6320 | prepare_one_comp_unit (cu, comp_unit_die, language_minimal); |
ae038cb0 | 6321 | |
ae038cb0 DJ |
6322 | /* Check if comp unit has_children. |
6323 | If so, read the rest of the partial symbols from this comp unit. | |
0963b4bd | 6324 | If not, there's no more debug_info for this comp unit. */ |
d85a05f0 | 6325 | if (has_children) |
dee91e82 DE |
6326 | load_partial_dies (reader, info_ptr, 0); |
6327 | } | |
98bfdba5 | 6328 | |
dee91e82 DE |
6329 | /* Load the partial DIEs for a secondary CU into memory. |
6330 | This is also used when rereading a primary CU with load_all_dies. */ | |
c5b7e1cb | 6331 | |
dee91e82 DE |
6332 | static void |
6333 | load_partial_comp_unit (struct dwarf2_per_cu_data *this_cu) | |
6334 | { | |
f4dc4d17 DE |
6335 | init_cutu_and_read_dies (this_cu, NULL, 1, 1, |
6336 | load_partial_comp_unit_reader, NULL); | |
ae038cb0 DJ |
6337 | } |
6338 | ||
ae038cb0 | 6339 | static void |
36586728 TT |
6340 | read_comp_units_from_section (struct objfile *objfile, |
6341 | struct dwarf2_section_info *section, | |
6342 | unsigned int is_dwz, | |
6343 | int *n_allocated, | |
6344 | int *n_comp_units, | |
6345 | struct dwarf2_per_cu_data ***all_comp_units) | |
ae038cb0 | 6346 | { |
d521ce57 | 6347 | const gdb_byte *info_ptr; |
a32a8923 | 6348 | bfd *abfd = get_section_bfd_owner (section); |
be391dca | 6349 | |
bf6af496 DE |
6350 | if (dwarf2_read_debug) |
6351 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s\n", | |
a32a8923 DE |
6352 | get_section_name (section), |
6353 | get_section_file_name (section)); | |
bf6af496 | 6354 | |
36586728 | 6355 | dwarf2_read_section (objfile, section); |
ae038cb0 | 6356 | |
36586728 | 6357 | info_ptr = section->buffer; |
6e70227d | 6358 | |
36586728 | 6359 | while (info_ptr < section->buffer + section->size) |
ae038cb0 | 6360 | { |
c764a876 | 6361 | unsigned int length, initial_length_size; |
ae038cb0 | 6362 | struct dwarf2_per_cu_data *this_cu; |
b64f50a1 | 6363 | sect_offset offset; |
ae038cb0 | 6364 | |
36586728 | 6365 | offset.sect_off = info_ptr - section->buffer; |
ae038cb0 DJ |
6366 | |
6367 | /* Read just enough information to find out where the next | |
6368 | compilation unit is. */ | |
36586728 | 6369 | length = read_initial_length (abfd, info_ptr, &initial_length_size); |
ae038cb0 DJ |
6370 | |
6371 | /* Save the compilation unit for later lookup. */ | |
6372 | this_cu = obstack_alloc (&objfile->objfile_obstack, | |
6373 | sizeof (struct dwarf2_per_cu_data)); | |
6374 | memset (this_cu, 0, sizeof (*this_cu)); | |
6375 | this_cu->offset = offset; | |
c764a876 | 6376 | this_cu->length = length + initial_length_size; |
36586728 | 6377 | this_cu->is_dwz = is_dwz; |
9291a0cd | 6378 | this_cu->objfile = objfile; |
8a0459fd | 6379 | this_cu->section = section; |
ae038cb0 | 6380 | |
36586728 | 6381 | if (*n_comp_units == *n_allocated) |
ae038cb0 | 6382 | { |
36586728 TT |
6383 | *n_allocated *= 2; |
6384 | *all_comp_units = xrealloc (*all_comp_units, | |
6385 | *n_allocated | |
6386 | * sizeof (struct dwarf2_per_cu_data *)); | |
ae038cb0 | 6387 | } |
36586728 TT |
6388 | (*all_comp_units)[*n_comp_units] = this_cu; |
6389 | ++*n_comp_units; | |
ae038cb0 DJ |
6390 | |
6391 | info_ptr = info_ptr + this_cu->length; | |
6392 | } | |
36586728 TT |
6393 | } |
6394 | ||
6395 | /* Create a list of all compilation units in OBJFILE. | |
6396 | This is only done for -readnow and building partial symtabs. */ | |
6397 | ||
6398 | static void | |
6399 | create_all_comp_units (struct objfile *objfile) | |
6400 | { | |
6401 | int n_allocated; | |
6402 | int n_comp_units; | |
6403 | struct dwarf2_per_cu_data **all_comp_units; | |
4db1a1dc | 6404 | struct dwz_file *dwz; |
36586728 TT |
6405 | |
6406 | n_comp_units = 0; | |
6407 | n_allocated = 10; | |
6408 | all_comp_units = xmalloc (n_allocated | |
6409 | * sizeof (struct dwarf2_per_cu_data *)); | |
6410 | ||
6411 | read_comp_units_from_section (objfile, &dwarf2_per_objfile->info, 0, | |
6412 | &n_allocated, &n_comp_units, &all_comp_units); | |
6413 | ||
4db1a1dc TT |
6414 | dwz = dwarf2_get_dwz_file (); |
6415 | if (dwz != NULL) | |
6416 | read_comp_units_from_section (objfile, &dwz->info, 1, | |
6417 | &n_allocated, &n_comp_units, | |
6418 | &all_comp_units); | |
ae038cb0 DJ |
6419 | |
6420 | dwarf2_per_objfile->all_comp_units | |
6421 | = obstack_alloc (&objfile->objfile_obstack, | |
6422 | n_comp_units * sizeof (struct dwarf2_per_cu_data *)); | |
6423 | memcpy (dwarf2_per_objfile->all_comp_units, all_comp_units, | |
6424 | n_comp_units * sizeof (struct dwarf2_per_cu_data *)); | |
6425 | xfree (all_comp_units); | |
6426 | dwarf2_per_objfile->n_comp_units = n_comp_units; | |
c906108c SS |
6427 | } |
6428 | ||
5734ee8b DJ |
6429 | /* Process all loaded DIEs for compilation unit CU, starting at |
6430 | FIRST_DIE. The caller should pass NEED_PC == 1 if the compilation | |
6431 | unit DIE did not have PC info (DW_AT_low_pc and DW_AT_high_pc, or | |
6432 | DW_AT_ranges). If NEED_PC is set, then this function will set | |
6433 | *LOWPC and *HIGHPC to the lowest and highest PC values found in CU | |
6434 | and record the covered ranges in the addrmap. */ | |
c906108c | 6435 | |
72bf9492 DJ |
6436 | static void |
6437 | scan_partial_symbols (struct partial_die_info *first_die, CORE_ADDR *lowpc, | |
5734ee8b | 6438 | CORE_ADDR *highpc, int need_pc, struct dwarf2_cu *cu) |
c906108c | 6439 | { |
72bf9492 | 6440 | struct partial_die_info *pdi; |
c906108c | 6441 | |
91c24f0a DC |
6442 | /* Now, march along the PDI's, descending into ones which have |
6443 | interesting children but skipping the children of the other ones, | |
6444 | until we reach the end of the compilation unit. */ | |
c906108c | 6445 | |
72bf9492 | 6446 | pdi = first_die; |
91c24f0a | 6447 | |
72bf9492 DJ |
6448 | while (pdi != NULL) |
6449 | { | |
6450 | fixup_partial_die (pdi, cu); | |
c906108c | 6451 | |
f55ee35c | 6452 | /* Anonymous namespaces or modules have no name but have interesting |
91c24f0a DC |
6453 | children, so we need to look at them. Ditto for anonymous |
6454 | enums. */ | |
933c6fe4 | 6455 | |
72bf9492 | 6456 | if (pdi->name != NULL || pdi->tag == DW_TAG_namespace |
95554aad TT |
6457 | || pdi->tag == DW_TAG_module || pdi->tag == DW_TAG_enumeration_type |
6458 | || pdi->tag == DW_TAG_imported_unit) | |
c906108c | 6459 | { |
72bf9492 | 6460 | switch (pdi->tag) |
c906108c SS |
6461 | { |
6462 | case DW_TAG_subprogram: | |
5734ee8b | 6463 | add_partial_subprogram (pdi, lowpc, highpc, need_pc, cu); |
c906108c | 6464 | break; |
72929c62 | 6465 | case DW_TAG_constant: |
c906108c SS |
6466 | case DW_TAG_variable: |
6467 | case DW_TAG_typedef: | |
91c24f0a | 6468 | case DW_TAG_union_type: |
72bf9492 | 6469 | if (!pdi->is_declaration) |
63d06c5c | 6470 | { |
72bf9492 | 6471 | add_partial_symbol (pdi, cu); |
63d06c5c DC |
6472 | } |
6473 | break; | |
c906108c | 6474 | case DW_TAG_class_type: |
680b30c7 | 6475 | case DW_TAG_interface_type: |
c906108c | 6476 | case DW_TAG_structure_type: |
72bf9492 | 6477 | if (!pdi->is_declaration) |
c906108c | 6478 | { |
72bf9492 | 6479 | add_partial_symbol (pdi, cu); |
c906108c SS |
6480 | } |
6481 | break; | |
91c24f0a | 6482 | case DW_TAG_enumeration_type: |
72bf9492 DJ |
6483 | if (!pdi->is_declaration) |
6484 | add_partial_enumeration (pdi, cu); | |
c906108c SS |
6485 | break; |
6486 | case DW_TAG_base_type: | |
a02abb62 | 6487 | case DW_TAG_subrange_type: |
c906108c | 6488 | /* File scope base type definitions are added to the partial |
c5aa993b | 6489 | symbol table. */ |
72bf9492 | 6490 | add_partial_symbol (pdi, cu); |
c906108c | 6491 | break; |
d9fa45fe | 6492 | case DW_TAG_namespace: |
5734ee8b | 6493 | add_partial_namespace (pdi, lowpc, highpc, need_pc, cu); |
91c24f0a | 6494 | break; |
5d7cb8df JK |
6495 | case DW_TAG_module: |
6496 | add_partial_module (pdi, lowpc, highpc, need_pc, cu); | |
6497 | break; | |
95554aad TT |
6498 | case DW_TAG_imported_unit: |
6499 | { | |
6500 | struct dwarf2_per_cu_data *per_cu; | |
6501 | ||
f4dc4d17 DE |
6502 | /* For now we don't handle imported units in type units. */ |
6503 | if (cu->per_cu->is_debug_types) | |
6504 | { | |
6505 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
6506 | " supported in type units [in module %s]"), | |
4262abfb | 6507 | objfile_name (cu->objfile)); |
f4dc4d17 DE |
6508 | } |
6509 | ||
95554aad | 6510 | per_cu = dwarf2_find_containing_comp_unit (pdi->d.offset, |
36586728 | 6511 | pdi->is_dwz, |
95554aad TT |
6512 | cu->objfile); |
6513 | ||
6514 | /* Go read the partial unit, if needed. */ | |
6515 | if (per_cu->v.psymtab == NULL) | |
b93601f3 | 6516 | process_psymtab_comp_unit (per_cu, 1, cu->language); |
95554aad | 6517 | |
f4dc4d17 | 6518 | VEC_safe_push (dwarf2_per_cu_ptr, |
796a7ff8 | 6519 | cu->per_cu->imported_symtabs, per_cu); |
95554aad TT |
6520 | } |
6521 | break; | |
74921315 KS |
6522 | case DW_TAG_imported_declaration: |
6523 | add_partial_symbol (pdi, cu); | |
6524 | break; | |
c906108c SS |
6525 | default: |
6526 | break; | |
6527 | } | |
6528 | } | |
6529 | ||
72bf9492 DJ |
6530 | /* If the die has a sibling, skip to the sibling. */ |
6531 | ||
6532 | pdi = pdi->die_sibling; | |
6533 | } | |
6534 | } | |
6535 | ||
6536 | /* Functions used to compute the fully scoped name of a partial DIE. | |
91c24f0a | 6537 | |
72bf9492 | 6538 | Normally, this is simple. For C++, the parent DIE's fully scoped |
987504bb JJ |
6539 | name is concatenated with "::" and the partial DIE's name. For |
6540 | Java, the same thing occurs except that "." is used instead of "::". | |
72bf9492 DJ |
6541 | Enumerators are an exception; they use the scope of their parent |
6542 | enumeration type, i.e. the name of the enumeration type is not | |
6543 | prepended to the enumerator. | |
91c24f0a | 6544 | |
72bf9492 DJ |
6545 | There are two complexities. One is DW_AT_specification; in this |
6546 | case "parent" means the parent of the target of the specification, | |
6547 | instead of the direct parent of the DIE. The other is compilers | |
6548 | which do not emit DW_TAG_namespace; in this case we try to guess | |
6549 | the fully qualified name of structure types from their members' | |
6550 | linkage names. This must be done using the DIE's children rather | |
6551 | than the children of any DW_AT_specification target. We only need | |
6552 | to do this for structures at the top level, i.e. if the target of | |
6553 | any DW_AT_specification (if any; otherwise the DIE itself) does not | |
6554 | have a parent. */ | |
6555 | ||
6556 | /* Compute the scope prefix associated with PDI's parent, in | |
6557 | compilation unit CU. The result will be allocated on CU's | |
6558 | comp_unit_obstack, or a copy of the already allocated PDI->NAME | |
6559 | field. NULL is returned if no prefix is necessary. */ | |
15d034d0 | 6560 | static const char * |
72bf9492 DJ |
6561 | partial_die_parent_scope (struct partial_die_info *pdi, |
6562 | struct dwarf2_cu *cu) | |
6563 | { | |
15d034d0 | 6564 | const char *grandparent_scope; |
72bf9492 | 6565 | struct partial_die_info *parent, *real_pdi; |
91c24f0a | 6566 | |
72bf9492 DJ |
6567 | /* We need to look at our parent DIE; if we have a DW_AT_specification, |
6568 | then this means the parent of the specification DIE. */ | |
6569 | ||
6570 | real_pdi = pdi; | |
72bf9492 | 6571 | while (real_pdi->has_specification) |
36586728 TT |
6572 | real_pdi = find_partial_die (real_pdi->spec_offset, |
6573 | real_pdi->spec_is_dwz, cu); | |
72bf9492 DJ |
6574 | |
6575 | parent = real_pdi->die_parent; | |
6576 | if (parent == NULL) | |
6577 | return NULL; | |
6578 | ||
6579 | if (parent->scope_set) | |
6580 | return parent->scope; | |
6581 | ||
6582 | fixup_partial_die (parent, cu); | |
6583 | ||
10b3939b | 6584 | grandparent_scope = partial_die_parent_scope (parent, cu); |
72bf9492 | 6585 | |
acebe513 UW |
6586 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
6587 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
6588 | Work around this problem here. */ | |
6589 | if (cu->language == language_cplus | |
6e70227d | 6590 | && parent->tag == DW_TAG_namespace |
acebe513 UW |
6591 | && strcmp (parent->name, "::") == 0 |
6592 | && grandparent_scope == NULL) | |
6593 | { | |
6594 | parent->scope = NULL; | |
6595 | parent->scope_set = 1; | |
6596 | return NULL; | |
6597 | } | |
6598 | ||
9c6c53f7 SA |
6599 | if (pdi->tag == DW_TAG_enumerator) |
6600 | /* Enumerators should not get the name of the enumeration as a prefix. */ | |
6601 | parent->scope = grandparent_scope; | |
6602 | else if (parent->tag == DW_TAG_namespace | |
f55ee35c | 6603 | || parent->tag == DW_TAG_module |
72bf9492 DJ |
6604 | || parent->tag == DW_TAG_structure_type |
6605 | || parent->tag == DW_TAG_class_type | |
680b30c7 | 6606 | || parent->tag == DW_TAG_interface_type |
ceeb3d5a TT |
6607 | || parent->tag == DW_TAG_union_type |
6608 | || parent->tag == DW_TAG_enumeration_type) | |
72bf9492 DJ |
6609 | { |
6610 | if (grandparent_scope == NULL) | |
6611 | parent->scope = parent->name; | |
6612 | else | |
3e43a32a MS |
6613 | parent->scope = typename_concat (&cu->comp_unit_obstack, |
6614 | grandparent_scope, | |
f55ee35c | 6615 | parent->name, 0, cu); |
72bf9492 | 6616 | } |
72bf9492 DJ |
6617 | else |
6618 | { | |
6619 | /* FIXME drow/2004-04-01: What should we be doing with | |
6620 | function-local names? For partial symbols, we should probably be | |
6621 | ignoring them. */ | |
6622 | complaint (&symfile_complaints, | |
e2e0b3e5 | 6623 | _("unhandled containing DIE tag %d for DIE at %d"), |
b64f50a1 | 6624 | parent->tag, pdi->offset.sect_off); |
72bf9492 | 6625 | parent->scope = grandparent_scope; |
c906108c SS |
6626 | } |
6627 | ||
72bf9492 DJ |
6628 | parent->scope_set = 1; |
6629 | return parent->scope; | |
6630 | } | |
6631 | ||
6632 | /* Return the fully scoped name associated with PDI, from compilation unit | |
6633 | CU. The result will be allocated with malloc. */ | |
4568ecf9 | 6634 | |
72bf9492 DJ |
6635 | static char * |
6636 | partial_die_full_name (struct partial_die_info *pdi, | |
6637 | struct dwarf2_cu *cu) | |
6638 | { | |
15d034d0 | 6639 | const char *parent_scope; |
72bf9492 | 6640 | |
98bfdba5 PA |
6641 | /* If this is a template instantiation, we can not work out the |
6642 | template arguments from partial DIEs. So, unfortunately, we have | |
6643 | to go through the full DIEs. At least any work we do building | |
6644 | types here will be reused if full symbols are loaded later. */ | |
6645 | if (pdi->has_template_arguments) | |
6646 | { | |
6647 | fixup_partial_die (pdi, cu); | |
6648 | ||
6649 | if (pdi->name != NULL && strchr (pdi->name, '<') == NULL) | |
6650 | { | |
6651 | struct die_info *die; | |
6652 | struct attribute attr; | |
6653 | struct dwarf2_cu *ref_cu = cu; | |
6654 | ||
b64f50a1 | 6655 | /* DW_FORM_ref_addr is using section offset. */ |
98bfdba5 PA |
6656 | attr.name = 0; |
6657 | attr.form = DW_FORM_ref_addr; | |
4568ecf9 | 6658 | attr.u.unsnd = pdi->offset.sect_off; |
98bfdba5 PA |
6659 | die = follow_die_ref (NULL, &attr, &ref_cu); |
6660 | ||
6661 | return xstrdup (dwarf2_full_name (NULL, die, ref_cu)); | |
6662 | } | |
6663 | } | |
6664 | ||
72bf9492 DJ |
6665 | parent_scope = partial_die_parent_scope (pdi, cu); |
6666 | if (parent_scope == NULL) | |
6667 | return NULL; | |
6668 | else | |
f55ee35c | 6669 | return typename_concat (NULL, parent_scope, pdi->name, 0, cu); |
c906108c SS |
6670 | } |
6671 | ||
6672 | static void | |
72bf9492 | 6673 | add_partial_symbol (struct partial_die_info *pdi, struct dwarf2_cu *cu) |
c906108c | 6674 | { |
e7c27a73 | 6675 | struct objfile *objfile = cu->objfile; |
c906108c | 6676 | CORE_ADDR addr = 0; |
15d034d0 | 6677 | const char *actual_name = NULL; |
e142c38c | 6678 | CORE_ADDR baseaddr; |
15d034d0 | 6679 | char *built_actual_name; |
e142c38c DJ |
6680 | |
6681 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 6682 | |
15d034d0 TT |
6683 | built_actual_name = partial_die_full_name (pdi, cu); |
6684 | if (built_actual_name != NULL) | |
6685 | actual_name = built_actual_name; | |
63d06c5c | 6686 | |
72bf9492 DJ |
6687 | if (actual_name == NULL) |
6688 | actual_name = pdi->name; | |
6689 | ||
c906108c SS |
6690 | switch (pdi->tag) |
6691 | { | |
6692 | case DW_TAG_subprogram: | |
2cfa0c8d | 6693 | if (pdi->is_external || cu->language == language_ada) |
c906108c | 6694 | { |
2cfa0c8d JB |
6695 | /* brobecker/2007-12-26: Normally, only "external" DIEs are part |
6696 | of the global scope. But in Ada, we want to be able to access | |
6697 | nested procedures globally. So all Ada subprograms are stored | |
6698 | in the global scope. */ | |
f47fb265 | 6699 | /* prim_record_minimal_symbol (actual_name, pdi->lowpc + baseaddr, |
c5aa993b | 6700 | mst_text, objfile); */ |
f47fb265 | 6701 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 6702 | built_actual_name != NULL, |
f47fb265 MS |
6703 | VAR_DOMAIN, LOC_BLOCK, |
6704 | &objfile->global_psymbols, | |
6705 | 0, pdi->lowpc + baseaddr, | |
6706 | cu->language, objfile); | |
c906108c SS |
6707 | } |
6708 | else | |
6709 | { | |
f47fb265 | 6710 | /* prim_record_minimal_symbol (actual_name, pdi->lowpc + baseaddr, |
c5aa993b | 6711 | mst_file_text, objfile); */ |
f47fb265 | 6712 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 6713 | built_actual_name != NULL, |
f47fb265 MS |
6714 | VAR_DOMAIN, LOC_BLOCK, |
6715 | &objfile->static_psymbols, | |
6716 | 0, pdi->lowpc + baseaddr, | |
6717 | cu->language, objfile); | |
c906108c SS |
6718 | } |
6719 | break; | |
72929c62 JB |
6720 | case DW_TAG_constant: |
6721 | { | |
6722 | struct psymbol_allocation_list *list; | |
6723 | ||
6724 | if (pdi->is_external) | |
6725 | list = &objfile->global_psymbols; | |
6726 | else | |
6727 | list = &objfile->static_psymbols; | |
f47fb265 | 6728 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 6729 | built_actual_name != NULL, VAR_DOMAIN, LOC_STATIC, |
f47fb265 | 6730 | list, 0, 0, cu->language, objfile); |
72929c62 JB |
6731 | } |
6732 | break; | |
c906108c | 6733 | case DW_TAG_variable: |
95554aad TT |
6734 | if (pdi->d.locdesc) |
6735 | addr = decode_locdesc (pdi->d.locdesc, cu); | |
caac4577 | 6736 | |
95554aad | 6737 | if (pdi->d.locdesc |
caac4577 JG |
6738 | && addr == 0 |
6739 | && !dwarf2_per_objfile->has_section_at_zero) | |
6740 | { | |
6741 | /* A global or static variable may also have been stripped | |
6742 | out by the linker if unused, in which case its address | |
6743 | will be nullified; do not add such variables into partial | |
6744 | symbol table then. */ | |
6745 | } | |
6746 | else if (pdi->is_external) | |
c906108c SS |
6747 | { |
6748 | /* Global Variable. | |
6749 | Don't enter into the minimal symbol tables as there is | |
6750 | a minimal symbol table entry from the ELF symbols already. | |
6751 | Enter into partial symbol table if it has a location | |
6752 | descriptor or a type. | |
6753 | If the location descriptor is missing, new_symbol will create | |
6754 | a LOC_UNRESOLVED symbol, the address of the variable will then | |
6755 | be determined from the minimal symbol table whenever the variable | |
6756 | is referenced. | |
6757 | The address for the partial symbol table entry is not | |
6758 | used by GDB, but it comes in handy for debugging partial symbol | |
6759 | table building. */ | |
6760 | ||
95554aad | 6761 | if (pdi->d.locdesc || pdi->has_type) |
f47fb265 | 6762 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 6763 | built_actual_name != NULL, |
f47fb265 MS |
6764 | VAR_DOMAIN, LOC_STATIC, |
6765 | &objfile->global_psymbols, | |
6766 | 0, addr + baseaddr, | |
6767 | cu->language, objfile); | |
c906108c SS |
6768 | } |
6769 | else | |
6770 | { | |
0963b4bd | 6771 | /* Static Variable. Skip symbols without location descriptors. */ |
95554aad | 6772 | if (pdi->d.locdesc == NULL) |
decbce07 | 6773 | { |
15d034d0 | 6774 | xfree (built_actual_name); |
decbce07 MS |
6775 | return; |
6776 | } | |
f47fb265 | 6777 | /* prim_record_minimal_symbol (actual_name, addr + baseaddr, |
c5aa993b | 6778 | mst_file_data, objfile); */ |
f47fb265 | 6779 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 6780 | built_actual_name != NULL, |
f47fb265 MS |
6781 | VAR_DOMAIN, LOC_STATIC, |
6782 | &objfile->static_psymbols, | |
6783 | 0, addr + baseaddr, | |
6784 | cu->language, objfile); | |
c906108c SS |
6785 | } |
6786 | break; | |
6787 | case DW_TAG_typedef: | |
6788 | case DW_TAG_base_type: | |
a02abb62 | 6789 | case DW_TAG_subrange_type: |
38d518c9 | 6790 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 6791 | built_actual_name != NULL, |
176620f1 | 6792 | VAR_DOMAIN, LOC_TYPEDEF, |
c906108c | 6793 | &objfile->static_psymbols, |
e142c38c | 6794 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c | 6795 | break; |
74921315 | 6796 | case DW_TAG_imported_declaration: |
72bf9492 DJ |
6797 | case DW_TAG_namespace: |
6798 | add_psymbol_to_list (actual_name, strlen (actual_name), | |
15d034d0 | 6799 | built_actual_name != NULL, |
72bf9492 DJ |
6800 | VAR_DOMAIN, LOC_TYPEDEF, |
6801 | &objfile->global_psymbols, | |
6802 | 0, (CORE_ADDR) 0, cu->language, objfile); | |
6803 | break; | |
530e8392 KB |
6804 | case DW_TAG_module: |
6805 | add_psymbol_to_list (actual_name, strlen (actual_name), | |
6806 | built_actual_name != NULL, | |
6807 | MODULE_DOMAIN, LOC_TYPEDEF, | |
6808 | &objfile->global_psymbols, | |
6809 | 0, (CORE_ADDR) 0, cu->language, objfile); | |
6810 | break; | |
c906108c | 6811 | case DW_TAG_class_type: |
680b30c7 | 6812 | case DW_TAG_interface_type: |
c906108c SS |
6813 | case DW_TAG_structure_type: |
6814 | case DW_TAG_union_type: | |
6815 | case DW_TAG_enumeration_type: | |
fa4028e9 JB |
6816 | /* Skip external references. The DWARF standard says in the section |
6817 | about "Structure, Union, and Class Type Entries": "An incomplete | |
6818 | structure, union or class type is represented by a structure, | |
6819 | union or class entry that does not have a byte size attribute | |
6820 | and that has a DW_AT_declaration attribute." */ | |
6821 | if (!pdi->has_byte_size && pdi->is_declaration) | |
decbce07 | 6822 | { |
15d034d0 | 6823 | xfree (built_actual_name); |
decbce07 MS |
6824 | return; |
6825 | } | |
fa4028e9 | 6826 | |
63d06c5c DC |
6827 | /* NOTE: carlton/2003-10-07: See comment in new_symbol about |
6828 | static vs. global. */ | |
38d518c9 | 6829 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 6830 | built_actual_name != NULL, |
176620f1 | 6831 | STRUCT_DOMAIN, LOC_TYPEDEF, |
987504bb JJ |
6832 | (cu->language == language_cplus |
6833 | || cu->language == language_java) | |
63d06c5c DC |
6834 | ? &objfile->global_psymbols |
6835 | : &objfile->static_psymbols, | |
e142c38c | 6836 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c | 6837 | |
c906108c SS |
6838 | break; |
6839 | case DW_TAG_enumerator: | |
38d518c9 | 6840 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 6841 | built_actual_name != NULL, |
176620f1 | 6842 | VAR_DOMAIN, LOC_CONST, |
987504bb JJ |
6843 | (cu->language == language_cplus |
6844 | || cu->language == language_java) | |
f6fe98ef DJ |
6845 | ? &objfile->global_psymbols |
6846 | : &objfile->static_psymbols, | |
e142c38c | 6847 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c SS |
6848 | break; |
6849 | default: | |
6850 | break; | |
6851 | } | |
5c4e30ca | 6852 | |
15d034d0 | 6853 | xfree (built_actual_name); |
c906108c SS |
6854 | } |
6855 | ||
5c4e30ca DC |
6856 | /* Read a partial die corresponding to a namespace; also, add a symbol |
6857 | corresponding to that namespace to the symbol table. NAMESPACE is | |
6858 | the name of the enclosing namespace. */ | |
91c24f0a | 6859 | |
72bf9492 DJ |
6860 | static void |
6861 | add_partial_namespace (struct partial_die_info *pdi, | |
91c24f0a | 6862 | CORE_ADDR *lowpc, CORE_ADDR *highpc, |
5734ee8b | 6863 | int need_pc, struct dwarf2_cu *cu) |
91c24f0a | 6864 | { |
72bf9492 | 6865 | /* Add a symbol for the namespace. */ |
e7c27a73 | 6866 | |
72bf9492 | 6867 | add_partial_symbol (pdi, cu); |
5c4e30ca DC |
6868 | |
6869 | /* Now scan partial symbols in that namespace. */ | |
6870 | ||
91c24f0a | 6871 | if (pdi->has_children) |
5734ee8b | 6872 | scan_partial_symbols (pdi->die_child, lowpc, highpc, need_pc, cu); |
91c24f0a DC |
6873 | } |
6874 | ||
5d7cb8df JK |
6875 | /* Read a partial die corresponding to a Fortran module. */ |
6876 | ||
6877 | static void | |
6878 | add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, | |
6879 | CORE_ADDR *highpc, int need_pc, struct dwarf2_cu *cu) | |
6880 | { | |
530e8392 KB |
6881 | /* Add a symbol for the namespace. */ |
6882 | ||
6883 | add_partial_symbol (pdi, cu); | |
6884 | ||
f55ee35c | 6885 | /* Now scan partial symbols in that module. */ |
5d7cb8df JK |
6886 | |
6887 | if (pdi->has_children) | |
6888 | scan_partial_symbols (pdi->die_child, lowpc, highpc, need_pc, cu); | |
6889 | } | |
6890 | ||
bc30ff58 JB |
6891 | /* Read a partial die corresponding to a subprogram and create a partial |
6892 | symbol for that subprogram. When the CU language allows it, this | |
6893 | routine also defines a partial symbol for each nested subprogram | |
6894 | that this subprogram contains. | |
6e70227d | 6895 | |
bc30ff58 JB |
6896 | DIE my also be a lexical block, in which case we simply search |
6897 | recursively for suprograms defined inside that lexical block. | |
6898 | Again, this is only performed when the CU language allows this | |
6899 | type of definitions. */ | |
6900 | ||
6901 | static void | |
6902 | add_partial_subprogram (struct partial_die_info *pdi, | |
6903 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 6904 | int need_pc, struct dwarf2_cu *cu) |
bc30ff58 JB |
6905 | { |
6906 | if (pdi->tag == DW_TAG_subprogram) | |
6907 | { | |
6908 | if (pdi->has_pc_info) | |
6909 | { | |
6910 | if (pdi->lowpc < *lowpc) | |
6911 | *lowpc = pdi->lowpc; | |
6912 | if (pdi->highpc > *highpc) | |
6913 | *highpc = pdi->highpc; | |
5734ee8b DJ |
6914 | if (need_pc) |
6915 | { | |
6916 | CORE_ADDR baseaddr; | |
6917 | struct objfile *objfile = cu->objfile; | |
6918 | ||
6919 | baseaddr = ANOFFSET (objfile->section_offsets, | |
6920 | SECT_OFF_TEXT (objfile)); | |
6921 | addrmap_set_empty (objfile->psymtabs_addrmap, | |
01637564 DE |
6922 | pdi->lowpc + baseaddr, |
6923 | pdi->highpc - 1 + baseaddr, | |
9291a0cd | 6924 | cu->per_cu->v.psymtab); |
5734ee8b | 6925 | } |
481860b3 GB |
6926 | } |
6927 | ||
6928 | if (pdi->has_pc_info || (!pdi->is_external && pdi->may_be_inlined)) | |
6929 | { | |
bc30ff58 | 6930 | if (!pdi->is_declaration) |
e8d05480 JB |
6931 | /* Ignore subprogram DIEs that do not have a name, they are |
6932 | illegal. Do not emit a complaint at this point, we will | |
6933 | do so when we convert this psymtab into a symtab. */ | |
6934 | if (pdi->name) | |
6935 | add_partial_symbol (pdi, cu); | |
bc30ff58 JB |
6936 | } |
6937 | } | |
6e70227d | 6938 | |
bc30ff58 JB |
6939 | if (! pdi->has_children) |
6940 | return; | |
6941 | ||
6942 | if (cu->language == language_ada) | |
6943 | { | |
6944 | pdi = pdi->die_child; | |
6945 | while (pdi != NULL) | |
6946 | { | |
6947 | fixup_partial_die (pdi, cu); | |
6948 | if (pdi->tag == DW_TAG_subprogram | |
6949 | || pdi->tag == DW_TAG_lexical_block) | |
5734ee8b | 6950 | add_partial_subprogram (pdi, lowpc, highpc, need_pc, cu); |
bc30ff58 JB |
6951 | pdi = pdi->die_sibling; |
6952 | } | |
6953 | } | |
6954 | } | |
6955 | ||
91c24f0a DC |
6956 | /* Read a partial die corresponding to an enumeration type. */ |
6957 | ||
72bf9492 DJ |
6958 | static void |
6959 | add_partial_enumeration (struct partial_die_info *enum_pdi, | |
6960 | struct dwarf2_cu *cu) | |
91c24f0a | 6961 | { |
72bf9492 | 6962 | struct partial_die_info *pdi; |
91c24f0a DC |
6963 | |
6964 | if (enum_pdi->name != NULL) | |
72bf9492 DJ |
6965 | add_partial_symbol (enum_pdi, cu); |
6966 | ||
6967 | pdi = enum_pdi->die_child; | |
6968 | while (pdi) | |
91c24f0a | 6969 | { |
72bf9492 | 6970 | if (pdi->tag != DW_TAG_enumerator || pdi->name == NULL) |
e2e0b3e5 | 6971 | complaint (&symfile_complaints, _("malformed enumerator DIE ignored")); |
91c24f0a | 6972 | else |
72bf9492 DJ |
6973 | add_partial_symbol (pdi, cu); |
6974 | pdi = pdi->die_sibling; | |
91c24f0a | 6975 | } |
91c24f0a DC |
6976 | } |
6977 | ||
6caca83c CC |
6978 | /* Return the initial uleb128 in the die at INFO_PTR. */ |
6979 | ||
6980 | static unsigned int | |
d521ce57 | 6981 | peek_abbrev_code (bfd *abfd, const gdb_byte *info_ptr) |
6caca83c CC |
6982 | { |
6983 | unsigned int bytes_read; | |
6984 | ||
6985 | return read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
6986 | } | |
6987 | ||
4bb7a0a7 DJ |
6988 | /* Read the initial uleb128 in the die at INFO_PTR in compilation unit CU. |
6989 | Return the corresponding abbrev, or NULL if the number is zero (indicating | |
6990 | an empty DIE). In either case *BYTES_READ will be set to the length of | |
6991 | the initial number. */ | |
6992 | ||
6993 | static struct abbrev_info * | |
d521ce57 | 6994 | peek_die_abbrev (const gdb_byte *info_ptr, unsigned int *bytes_read, |
891d2f0b | 6995 | struct dwarf2_cu *cu) |
4bb7a0a7 DJ |
6996 | { |
6997 | bfd *abfd = cu->objfile->obfd; | |
6998 | unsigned int abbrev_number; | |
6999 | struct abbrev_info *abbrev; | |
7000 | ||
7001 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
7002 | ||
7003 | if (abbrev_number == 0) | |
7004 | return NULL; | |
7005 | ||
433df2d4 | 7006 | abbrev = abbrev_table_lookup_abbrev (cu->abbrev_table, abbrev_number); |
4bb7a0a7 DJ |
7007 | if (!abbrev) |
7008 | { | |
3e43a32a MS |
7009 | error (_("Dwarf Error: Could not find abbrev number %d [in module %s]"), |
7010 | abbrev_number, bfd_get_filename (abfd)); | |
4bb7a0a7 DJ |
7011 | } |
7012 | ||
7013 | return abbrev; | |
7014 | } | |
7015 | ||
93311388 DE |
7016 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
7017 | Returns a pointer to the end of a series of DIEs, terminated by an empty | |
4bb7a0a7 DJ |
7018 | DIE. Any children of the skipped DIEs will also be skipped. */ |
7019 | ||
d521ce57 TT |
7020 | static const gdb_byte * |
7021 | skip_children (const struct die_reader_specs *reader, const gdb_byte *info_ptr) | |
4bb7a0a7 | 7022 | { |
dee91e82 | 7023 | struct dwarf2_cu *cu = reader->cu; |
4bb7a0a7 DJ |
7024 | struct abbrev_info *abbrev; |
7025 | unsigned int bytes_read; | |
7026 | ||
7027 | while (1) | |
7028 | { | |
7029 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, cu); | |
7030 | if (abbrev == NULL) | |
7031 | return info_ptr + bytes_read; | |
7032 | else | |
dee91e82 | 7033 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
4bb7a0a7 DJ |
7034 | } |
7035 | } | |
7036 | ||
93311388 DE |
7037 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
7038 | INFO_PTR should point just after the initial uleb128 of a DIE, and the | |
4bb7a0a7 DJ |
7039 | abbrev corresponding to that skipped uleb128 should be passed in |
7040 | ABBREV. Returns a pointer to this DIE's sibling, skipping any | |
7041 | children. */ | |
7042 | ||
d521ce57 TT |
7043 | static const gdb_byte * |
7044 | skip_one_die (const struct die_reader_specs *reader, const gdb_byte *info_ptr, | |
dee91e82 | 7045 | struct abbrev_info *abbrev) |
4bb7a0a7 DJ |
7046 | { |
7047 | unsigned int bytes_read; | |
7048 | struct attribute attr; | |
dee91e82 DE |
7049 | bfd *abfd = reader->abfd; |
7050 | struct dwarf2_cu *cu = reader->cu; | |
d521ce57 | 7051 | const gdb_byte *buffer = reader->buffer; |
f664829e | 7052 | const gdb_byte *buffer_end = reader->buffer_end; |
d521ce57 | 7053 | const gdb_byte *start_info_ptr = info_ptr; |
4bb7a0a7 DJ |
7054 | unsigned int form, i; |
7055 | ||
7056 | for (i = 0; i < abbrev->num_attrs; i++) | |
7057 | { | |
7058 | /* The only abbrev we care about is DW_AT_sibling. */ | |
7059 | if (abbrev->attrs[i].name == DW_AT_sibling) | |
7060 | { | |
dee91e82 | 7061 | read_attribute (reader, &attr, &abbrev->attrs[i], info_ptr); |
4bb7a0a7 | 7062 | if (attr.form == DW_FORM_ref_addr) |
3e43a32a MS |
7063 | complaint (&symfile_complaints, |
7064 | _("ignoring absolute DW_AT_sibling")); | |
4bb7a0a7 | 7065 | else |
b9502d3f WN |
7066 | { |
7067 | unsigned int off = dwarf2_get_ref_die_offset (&attr).sect_off; | |
7068 | const gdb_byte *sibling_ptr = buffer + off; | |
7069 | ||
7070 | if (sibling_ptr < info_ptr) | |
7071 | complaint (&symfile_complaints, | |
7072 | _("DW_AT_sibling points backwards")); | |
7073 | else | |
7074 | return sibling_ptr; | |
7075 | } | |
4bb7a0a7 DJ |
7076 | } |
7077 | ||
7078 | /* If it isn't DW_AT_sibling, skip this attribute. */ | |
7079 | form = abbrev->attrs[i].form; | |
7080 | skip_attribute: | |
7081 | switch (form) | |
7082 | { | |
4bb7a0a7 | 7083 | case DW_FORM_ref_addr: |
ae411497 TT |
7084 | /* In DWARF 2, DW_FORM_ref_addr is address sized; in DWARF 3 |
7085 | and later it is offset sized. */ | |
7086 | if (cu->header.version == 2) | |
7087 | info_ptr += cu->header.addr_size; | |
7088 | else | |
7089 | info_ptr += cu->header.offset_size; | |
7090 | break; | |
36586728 TT |
7091 | case DW_FORM_GNU_ref_alt: |
7092 | info_ptr += cu->header.offset_size; | |
7093 | break; | |
ae411497 | 7094 | case DW_FORM_addr: |
4bb7a0a7 DJ |
7095 | info_ptr += cu->header.addr_size; |
7096 | break; | |
7097 | case DW_FORM_data1: | |
7098 | case DW_FORM_ref1: | |
7099 | case DW_FORM_flag: | |
7100 | info_ptr += 1; | |
7101 | break; | |
2dc7f7b3 TT |
7102 | case DW_FORM_flag_present: |
7103 | break; | |
4bb7a0a7 DJ |
7104 | case DW_FORM_data2: |
7105 | case DW_FORM_ref2: | |
7106 | info_ptr += 2; | |
7107 | break; | |
7108 | case DW_FORM_data4: | |
7109 | case DW_FORM_ref4: | |
7110 | info_ptr += 4; | |
7111 | break; | |
7112 | case DW_FORM_data8: | |
7113 | case DW_FORM_ref8: | |
55f1336d | 7114 | case DW_FORM_ref_sig8: |
4bb7a0a7 DJ |
7115 | info_ptr += 8; |
7116 | break; | |
7117 | case DW_FORM_string: | |
9b1c24c8 | 7118 | read_direct_string (abfd, info_ptr, &bytes_read); |
4bb7a0a7 DJ |
7119 | info_ptr += bytes_read; |
7120 | break; | |
2dc7f7b3 | 7121 | case DW_FORM_sec_offset: |
4bb7a0a7 | 7122 | case DW_FORM_strp: |
36586728 | 7123 | case DW_FORM_GNU_strp_alt: |
4bb7a0a7 DJ |
7124 | info_ptr += cu->header.offset_size; |
7125 | break; | |
2dc7f7b3 | 7126 | case DW_FORM_exprloc: |
4bb7a0a7 DJ |
7127 | case DW_FORM_block: |
7128 | info_ptr += read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
7129 | info_ptr += bytes_read; | |
7130 | break; | |
7131 | case DW_FORM_block1: | |
7132 | info_ptr += 1 + read_1_byte (abfd, info_ptr); | |
7133 | break; | |
7134 | case DW_FORM_block2: | |
7135 | info_ptr += 2 + read_2_bytes (abfd, info_ptr); | |
7136 | break; | |
7137 | case DW_FORM_block4: | |
7138 | info_ptr += 4 + read_4_bytes (abfd, info_ptr); | |
7139 | break; | |
7140 | case DW_FORM_sdata: | |
7141 | case DW_FORM_udata: | |
7142 | case DW_FORM_ref_udata: | |
3019eac3 DE |
7143 | case DW_FORM_GNU_addr_index: |
7144 | case DW_FORM_GNU_str_index: | |
d521ce57 | 7145 | info_ptr = safe_skip_leb128 (info_ptr, buffer_end); |
4bb7a0a7 DJ |
7146 | break; |
7147 | case DW_FORM_indirect: | |
7148 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
7149 | info_ptr += bytes_read; | |
7150 | /* We need to continue parsing from here, so just go back to | |
7151 | the top. */ | |
7152 | goto skip_attribute; | |
7153 | ||
7154 | default: | |
3e43a32a MS |
7155 | error (_("Dwarf Error: Cannot handle %s " |
7156 | "in DWARF reader [in module %s]"), | |
4bb7a0a7 DJ |
7157 | dwarf_form_name (form), |
7158 | bfd_get_filename (abfd)); | |
7159 | } | |
7160 | } | |
7161 | ||
7162 | if (abbrev->has_children) | |
dee91e82 | 7163 | return skip_children (reader, info_ptr); |
4bb7a0a7 DJ |
7164 | else |
7165 | return info_ptr; | |
7166 | } | |
7167 | ||
93311388 | 7168 | /* Locate ORIG_PDI's sibling. |
dee91e82 | 7169 | INFO_PTR should point to the start of the next DIE after ORIG_PDI. */ |
91c24f0a | 7170 | |
d521ce57 | 7171 | static const gdb_byte * |
dee91e82 DE |
7172 | locate_pdi_sibling (const struct die_reader_specs *reader, |
7173 | struct partial_die_info *orig_pdi, | |
d521ce57 | 7174 | const gdb_byte *info_ptr) |
91c24f0a DC |
7175 | { |
7176 | /* Do we know the sibling already? */ | |
72bf9492 | 7177 | |
91c24f0a DC |
7178 | if (orig_pdi->sibling) |
7179 | return orig_pdi->sibling; | |
7180 | ||
7181 | /* Are there any children to deal with? */ | |
7182 | ||
7183 | if (!orig_pdi->has_children) | |
7184 | return info_ptr; | |
7185 | ||
4bb7a0a7 | 7186 | /* Skip the children the long way. */ |
91c24f0a | 7187 | |
dee91e82 | 7188 | return skip_children (reader, info_ptr); |
91c24f0a DC |
7189 | } |
7190 | ||
257e7a09 | 7191 | /* Expand this partial symbol table into a full symbol table. SELF is |
442e4d9c | 7192 | not NULL. */ |
c906108c SS |
7193 | |
7194 | static void | |
257e7a09 YQ |
7195 | dwarf2_read_symtab (struct partial_symtab *self, |
7196 | struct objfile *objfile) | |
c906108c | 7197 | { |
257e7a09 | 7198 | if (self->readin) |
c906108c | 7199 | { |
442e4d9c | 7200 | warning (_("bug: psymtab for %s is already read in."), |
257e7a09 | 7201 | self->filename); |
442e4d9c YQ |
7202 | } |
7203 | else | |
7204 | { | |
7205 | if (info_verbose) | |
c906108c | 7206 | { |
442e4d9c | 7207 | printf_filtered (_("Reading in symbols for %s..."), |
257e7a09 | 7208 | self->filename); |
442e4d9c | 7209 | gdb_flush (gdb_stdout); |
c906108c | 7210 | } |
c906108c | 7211 | |
442e4d9c YQ |
7212 | /* Restore our global data. */ |
7213 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); | |
10b3939b | 7214 | |
442e4d9c YQ |
7215 | /* If this psymtab is constructed from a debug-only objfile, the |
7216 | has_section_at_zero flag will not necessarily be correct. We | |
7217 | can get the correct value for this flag by looking at the data | |
7218 | associated with the (presumably stripped) associated objfile. */ | |
7219 | if (objfile->separate_debug_objfile_backlink) | |
7220 | { | |
7221 | struct dwarf2_per_objfile *dpo_backlink | |
7222 | = objfile_data (objfile->separate_debug_objfile_backlink, | |
7223 | dwarf2_objfile_data_key); | |
9a619af0 | 7224 | |
442e4d9c YQ |
7225 | dwarf2_per_objfile->has_section_at_zero |
7226 | = dpo_backlink->has_section_at_zero; | |
7227 | } | |
b2ab525c | 7228 | |
442e4d9c | 7229 | dwarf2_per_objfile->reading_partial_symbols = 0; |
98bfdba5 | 7230 | |
257e7a09 | 7231 | psymtab_to_symtab_1 (self); |
c906108c | 7232 | |
442e4d9c YQ |
7233 | /* Finish up the debug error message. */ |
7234 | if (info_verbose) | |
7235 | printf_filtered (_("done.\n")); | |
c906108c | 7236 | } |
95554aad TT |
7237 | |
7238 | process_cu_includes (); | |
c906108c | 7239 | } |
9cdd5dbd DE |
7240 | \f |
7241 | /* Reading in full CUs. */ | |
c906108c | 7242 | |
10b3939b DJ |
7243 | /* Add PER_CU to the queue. */ |
7244 | ||
7245 | static void | |
95554aad TT |
7246 | queue_comp_unit (struct dwarf2_per_cu_data *per_cu, |
7247 | enum language pretend_language) | |
10b3939b DJ |
7248 | { |
7249 | struct dwarf2_queue_item *item; | |
7250 | ||
7251 | per_cu->queued = 1; | |
7252 | item = xmalloc (sizeof (*item)); | |
7253 | item->per_cu = per_cu; | |
95554aad | 7254 | item->pretend_language = pretend_language; |
10b3939b DJ |
7255 | item->next = NULL; |
7256 | ||
7257 | if (dwarf2_queue == NULL) | |
7258 | dwarf2_queue = item; | |
7259 | else | |
7260 | dwarf2_queue_tail->next = item; | |
7261 | ||
7262 | dwarf2_queue_tail = item; | |
7263 | } | |
7264 | ||
89e63ee4 DE |
7265 | /* If PER_CU is not yet queued, add it to the queue. |
7266 | If DEPENDENT_CU is non-NULL, it has a reference to PER_CU so add a | |
7267 | dependency. | |
0907af0c | 7268 | The result is non-zero if PER_CU was queued, otherwise the result is zero |
69d751e3 DE |
7269 | meaning either PER_CU is already queued or it is already loaded. |
7270 | ||
7271 | N.B. There is an invariant here that if a CU is queued then it is loaded. | |
7272 | The caller is required to load PER_CU if we return non-zero. */ | |
0907af0c DE |
7273 | |
7274 | static int | |
89e63ee4 | 7275 | maybe_queue_comp_unit (struct dwarf2_cu *dependent_cu, |
0907af0c DE |
7276 | struct dwarf2_per_cu_data *per_cu, |
7277 | enum language pretend_language) | |
7278 | { | |
7279 | /* We may arrive here during partial symbol reading, if we need full | |
7280 | DIEs to process an unusual case (e.g. template arguments). Do | |
7281 | not queue PER_CU, just tell our caller to load its DIEs. */ | |
7282 | if (dwarf2_per_objfile->reading_partial_symbols) | |
7283 | { | |
7284 | if (per_cu->cu == NULL || per_cu->cu->dies == NULL) | |
7285 | return 1; | |
7286 | return 0; | |
7287 | } | |
7288 | ||
7289 | /* Mark the dependence relation so that we don't flush PER_CU | |
7290 | too early. */ | |
89e63ee4 DE |
7291 | if (dependent_cu != NULL) |
7292 | dwarf2_add_dependence (dependent_cu, per_cu); | |
0907af0c DE |
7293 | |
7294 | /* If it's already on the queue, we have nothing to do. */ | |
7295 | if (per_cu->queued) | |
7296 | return 0; | |
7297 | ||
7298 | /* If the compilation unit is already loaded, just mark it as | |
7299 | used. */ | |
7300 | if (per_cu->cu != NULL) | |
7301 | { | |
7302 | per_cu->cu->last_used = 0; | |
7303 | return 0; | |
7304 | } | |
7305 | ||
7306 | /* Add it to the queue. */ | |
7307 | queue_comp_unit (per_cu, pretend_language); | |
7308 | ||
7309 | return 1; | |
7310 | } | |
7311 | ||
10b3939b DJ |
7312 | /* Process the queue. */ |
7313 | ||
7314 | static void | |
a0f42c21 | 7315 | process_queue (void) |
10b3939b DJ |
7316 | { |
7317 | struct dwarf2_queue_item *item, *next_item; | |
7318 | ||
45cfd468 DE |
7319 | if (dwarf2_read_debug) |
7320 | { | |
7321 | fprintf_unfiltered (gdb_stdlog, | |
7322 | "Expanding one or more symtabs of objfile %s ...\n", | |
4262abfb | 7323 | objfile_name (dwarf2_per_objfile->objfile)); |
45cfd468 DE |
7324 | } |
7325 | ||
03dd20cc DJ |
7326 | /* The queue starts out with one item, but following a DIE reference |
7327 | may load a new CU, adding it to the end of the queue. */ | |
10b3939b DJ |
7328 | for (item = dwarf2_queue; item != NULL; dwarf2_queue = item = next_item) |
7329 | { | |
9291a0cd TT |
7330 | if (dwarf2_per_objfile->using_index |
7331 | ? !item->per_cu->v.quick->symtab | |
7332 | : (item->per_cu->v.psymtab && !item->per_cu->v.psymtab->readin)) | |
f4dc4d17 DE |
7333 | { |
7334 | struct dwarf2_per_cu_data *per_cu = item->per_cu; | |
73be47f5 | 7335 | unsigned int debug_print_threshold; |
247f5c4f | 7336 | char buf[100]; |
f4dc4d17 | 7337 | |
247f5c4f | 7338 | if (per_cu->is_debug_types) |
f4dc4d17 | 7339 | { |
247f5c4f DE |
7340 | struct signatured_type *sig_type = |
7341 | (struct signatured_type *) per_cu; | |
7342 | ||
7343 | sprintf (buf, "TU %s at offset 0x%x", | |
73be47f5 DE |
7344 | hex_string (sig_type->signature), |
7345 | per_cu->offset.sect_off); | |
7346 | /* There can be 100s of TUs. | |
7347 | Only print them in verbose mode. */ | |
7348 | debug_print_threshold = 2; | |
f4dc4d17 | 7349 | } |
247f5c4f | 7350 | else |
73be47f5 DE |
7351 | { |
7352 | sprintf (buf, "CU at offset 0x%x", per_cu->offset.sect_off); | |
7353 | debug_print_threshold = 1; | |
7354 | } | |
247f5c4f | 7355 | |
73be47f5 | 7356 | if (dwarf2_read_debug >= debug_print_threshold) |
247f5c4f | 7357 | fprintf_unfiltered (gdb_stdlog, "Expanding symtab of %s\n", buf); |
f4dc4d17 DE |
7358 | |
7359 | if (per_cu->is_debug_types) | |
7360 | process_full_type_unit (per_cu, item->pretend_language); | |
7361 | else | |
7362 | process_full_comp_unit (per_cu, item->pretend_language); | |
7363 | ||
73be47f5 | 7364 | if (dwarf2_read_debug >= debug_print_threshold) |
247f5c4f | 7365 | fprintf_unfiltered (gdb_stdlog, "Done expanding %s\n", buf); |
f4dc4d17 | 7366 | } |
10b3939b DJ |
7367 | |
7368 | item->per_cu->queued = 0; | |
7369 | next_item = item->next; | |
7370 | xfree (item); | |
7371 | } | |
7372 | ||
7373 | dwarf2_queue_tail = NULL; | |
45cfd468 DE |
7374 | |
7375 | if (dwarf2_read_debug) | |
7376 | { | |
7377 | fprintf_unfiltered (gdb_stdlog, "Done expanding symtabs of %s.\n", | |
4262abfb | 7378 | objfile_name (dwarf2_per_objfile->objfile)); |
45cfd468 | 7379 | } |
10b3939b DJ |
7380 | } |
7381 | ||
7382 | /* Free all allocated queue entries. This function only releases anything if | |
7383 | an error was thrown; if the queue was processed then it would have been | |
7384 | freed as we went along. */ | |
7385 | ||
7386 | static void | |
7387 | dwarf2_release_queue (void *dummy) | |
7388 | { | |
7389 | struct dwarf2_queue_item *item, *last; | |
7390 | ||
7391 | item = dwarf2_queue; | |
7392 | while (item) | |
7393 | { | |
7394 | /* Anything still marked queued is likely to be in an | |
7395 | inconsistent state, so discard it. */ | |
7396 | if (item->per_cu->queued) | |
7397 | { | |
7398 | if (item->per_cu->cu != NULL) | |
dee91e82 | 7399 | free_one_cached_comp_unit (item->per_cu); |
10b3939b DJ |
7400 | item->per_cu->queued = 0; |
7401 | } | |
7402 | ||
7403 | last = item; | |
7404 | item = item->next; | |
7405 | xfree (last); | |
7406 | } | |
7407 | ||
7408 | dwarf2_queue = dwarf2_queue_tail = NULL; | |
7409 | } | |
7410 | ||
7411 | /* Read in full symbols for PST, and anything it depends on. */ | |
7412 | ||
c906108c | 7413 | static void |
fba45db2 | 7414 | psymtab_to_symtab_1 (struct partial_symtab *pst) |
c906108c | 7415 | { |
10b3939b | 7416 | struct dwarf2_per_cu_data *per_cu; |
aaa75496 JB |
7417 | int i; |
7418 | ||
95554aad TT |
7419 | if (pst->readin) |
7420 | return; | |
7421 | ||
aaa75496 | 7422 | for (i = 0; i < pst->number_of_dependencies; i++) |
95554aad TT |
7423 | if (!pst->dependencies[i]->readin |
7424 | && pst->dependencies[i]->user == NULL) | |
aaa75496 JB |
7425 | { |
7426 | /* Inform about additional files that need to be read in. */ | |
7427 | if (info_verbose) | |
7428 | { | |
a3f17187 | 7429 | /* FIXME: i18n: Need to make this a single string. */ |
aaa75496 JB |
7430 | fputs_filtered (" ", gdb_stdout); |
7431 | wrap_here (""); | |
7432 | fputs_filtered ("and ", gdb_stdout); | |
7433 | wrap_here (""); | |
7434 | printf_filtered ("%s...", pst->dependencies[i]->filename); | |
0963b4bd | 7435 | wrap_here (""); /* Flush output. */ |
aaa75496 JB |
7436 | gdb_flush (gdb_stdout); |
7437 | } | |
7438 | psymtab_to_symtab_1 (pst->dependencies[i]); | |
7439 | } | |
7440 | ||
e38df1d0 | 7441 | per_cu = pst->read_symtab_private; |
10b3939b DJ |
7442 | |
7443 | if (per_cu == NULL) | |
aaa75496 JB |
7444 | { |
7445 | /* It's an include file, no symbols to read for it. | |
7446 | Everything is in the parent symtab. */ | |
7447 | pst->readin = 1; | |
7448 | return; | |
7449 | } | |
c906108c | 7450 | |
a0f42c21 | 7451 | dw2_do_instantiate_symtab (per_cu); |
10b3939b DJ |
7452 | } |
7453 | ||
dee91e82 DE |
7454 | /* Trivial hash function for die_info: the hash value of a DIE |
7455 | is its offset in .debug_info for this objfile. */ | |
10b3939b | 7456 | |
dee91e82 DE |
7457 | static hashval_t |
7458 | die_hash (const void *item) | |
10b3939b | 7459 | { |
dee91e82 | 7460 | const struct die_info *die = item; |
6502dd73 | 7461 | |
dee91e82 DE |
7462 | return die->offset.sect_off; |
7463 | } | |
63d06c5c | 7464 | |
dee91e82 DE |
7465 | /* Trivial comparison function for die_info structures: two DIEs |
7466 | are equal if they have the same offset. */ | |
98bfdba5 | 7467 | |
dee91e82 DE |
7468 | static int |
7469 | die_eq (const void *item_lhs, const void *item_rhs) | |
7470 | { | |
7471 | const struct die_info *die_lhs = item_lhs; | |
7472 | const struct die_info *die_rhs = item_rhs; | |
c906108c | 7473 | |
dee91e82 DE |
7474 | return die_lhs->offset.sect_off == die_rhs->offset.sect_off; |
7475 | } | |
c906108c | 7476 | |
dee91e82 DE |
7477 | /* die_reader_func for load_full_comp_unit. |
7478 | This is identical to read_signatured_type_reader, | |
7479 | but is kept separate for now. */ | |
c906108c | 7480 | |
dee91e82 DE |
7481 | static void |
7482 | load_full_comp_unit_reader (const struct die_reader_specs *reader, | |
d521ce57 | 7483 | const gdb_byte *info_ptr, |
dee91e82 DE |
7484 | struct die_info *comp_unit_die, |
7485 | int has_children, | |
7486 | void *data) | |
7487 | { | |
7488 | struct dwarf2_cu *cu = reader->cu; | |
95554aad | 7489 | enum language *language_ptr = data; |
6caca83c | 7490 | |
dee91e82 DE |
7491 | gdb_assert (cu->die_hash == NULL); |
7492 | cu->die_hash = | |
7493 | htab_create_alloc_ex (cu->header.length / 12, | |
7494 | die_hash, | |
7495 | die_eq, | |
7496 | NULL, | |
7497 | &cu->comp_unit_obstack, | |
7498 | hashtab_obstack_allocate, | |
7499 | dummy_obstack_deallocate); | |
e142c38c | 7500 | |
dee91e82 DE |
7501 | if (has_children) |
7502 | comp_unit_die->child = read_die_and_siblings (reader, info_ptr, | |
7503 | &info_ptr, comp_unit_die); | |
7504 | cu->dies = comp_unit_die; | |
7505 | /* comp_unit_die is not stored in die_hash, no need. */ | |
10b3939b DJ |
7506 | |
7507 | /* We try not to read any attributes in this function, because not | |
9cdd5dbd | 7508 | all CUs needed for references have been loaded yet, and symbol |
10b3939b | 7509 | table processing isn't initialized. But we have to set the CU language, |
dee91e82 DE |
7510 | or we won't be able to build types correctly. |
7511 | Similarly, if we do not read the producer, we can not apply | |
7512 | producer-specific interpretation. */ | |
95554aad | 7513 | prepare_one_comp_unit (cu, cu->dies, *language_ptr); |
dee91e82 | 7514 | } |
10b3939b | 7515 | |
dee91e82 | 7516 | /* Load the DIEs associated with PER_CU into memory. */ |
a6c727b2 | 7517 | |
dee91e82 | 7518 | static void |
95554aad TT |
7519 | load_full_comp_unit (struct dwarf2_per_cu_data *this_cu, |
7520 | enum language pretend_language) | |
dee91e82 | 7521 | { |
3019eac3 | 7522 | gdb_assert (! this_cu->is_debug_types); |
c5b7e1cb | 7523 | |
f4dc4d17 DE |
7524 | init_cutu_and_read_dies (this_cu, NULL, 1, 1, |
7525 | load_full_comp_unit_reader, &pretend_language); | |
10b3939b DJ |
7526 | } |
7527 | ||
3da10d80 KS |
7528 | /* Add a DIE to the delayed physname list. */ |
7529 | ||
7530 | static void | |
7531 | add_to_method_list (struct type *type, int fnfield_index, int index, | |
7532 | const char *name, struct die_info *die, | |
7533 | struct dwarf2_cu *cu) | |
7534 | { | |
7535 | struct delayed_method_info mi; | |
7536 | mi.type = type; | |
7537 | mi.fnfield_index = fnfield_index; | |
7538 | mi.index = index; | |
7539 | mi.name = name; | |
7540 | mi.die = die; | |
7541 | VEC_safe_push (delayed_method_info, cu->method_list, &mi); | |
7542 | } | |
7543 | ||
7544 | /* A cleanup for freeing the delayed method list. */ | |
7545 | ||
7546 | static void | |
7547 | free_delayed_list (void *ptr) | |
7548 | { | |
7549 | struct dwarf2_cu *cu = (struct dwarf2_cu *) ptr; | |
7550 | if (cu->method_list != NULL) | |
7551 | { | |
7552 | VEC_free (delayed_method_info, cu->method_list); | |
7553 | cu->method_list = NULL; | |
7554 | } | |
7555 | } | |
7556 | ||
7557 | /* Compute the physnames of any methods on the CU's method list. | |
7558 | ||
7559 | The computation of method physnames is delayed in order to avoid the | |
7560 | (bad) condition that one of the method's formal parameters is of an as yet | |
7561 | incomplete type. */ | |
7562 | ||
7563 | static void | |
7564 | compute_delayed_physnames (struct dwarf2_cu *cu) | |
7565 | { | |
7566 | int i; | |
7567 | struct delayed_method_info *mi; | |
7568 | for (i = 0; VEC_iterate (delayed_method_info, cu->method_list, i, mi) ; ++i) | |
7569 | { | |
1d06ead6 | 7570 | const char *physname; |
3da10d80 KS |
7571 | struct fn_fieldlist *fn_flp |
7572 | = &TYPE_FN_FIELDLIST (mi->type, mi->fnfield_index); | |
7d455152 | 7573 | physname = dwarf2_physname (mi->name, mi->die, cu); |
3da10d80 KS |
7574 | fn_flp->fn_fields[mi->index].physname = physname ? physname : ""; |
7575 | } | |
7576 | } | |
7577 | ||
a766d390 DE |
7578 | /* Go objects should be embedded in a DW_TAG_module DIE, |
7579 | and it's not clear if/how imported objects will appear. | |
7580 | To keep Go support simple until that's worked out, | |
7581 | go back through what we've read and create something usable. | |
7582 | We could do this while processing each DIE, and feels kinda cleaner, | |
7583 | but that way is more invasive. | |
7584 | This is to, for example, allow the user to type "p var" or "b main" | |
7585 | without having to specify the package name, and allow lookups | |
7586 | of module.object to work in contexts that use the expression | |
7587 | parser. */ | |
7588 | ||
7589 | static void | |
7590 | fixup_go_packaging (struct dwarf2_cu *cu) | |
7591 | { | |
7592 | char *package_name = NULL; | |
7593 | struct pending *list; | |
7594 | int i; | |
7595 | ||
7596 | for (list = global_symbols; list != NULL; list = list->next) | |
7597 | { | |
7598 | for (i = 0; i < list->nsyms; ++i) | |
7599 | { | |
7600 | struct symbol *sym = list->symbol[i]; | |
7601 | ||
7602 | if (SYMBOL_LANGUAGE (sym) == language_go | |
7603 | && SYMBOL_CLASS (sym) == LOC_BLOCK) | |
7604 | { | |
7605 | char *this_package_name = go_symbol_package_name (sym); | |
7606 | ||
7607 | if (this_package_name == NULL) | |
7608 | continue; | |
7609 | if (package_name == NULL) | |
7610 | package_name = this_package_name; | |
7611 | else | |
7612 | { | |
7613 | if (strcmp (package_name, this_package_name) != 0) | |
7614 | complaint (&symfile_complaints, | |
7615 | _("Symtab %s has objects from two different Go packages: %s and %s"), | |
210bbc17 | 7616 | (SYMBOL_SYMTAB (sym) |
05cba821 | 7617 | ? symtab_to_filename_for_display (SYMBOL_SYMTAB (sym)) |
4262abfb | 7618 | : objfile_name (cu->objfile)), |
a766d390 DE |
7619 | this_package_name, package_name); |
7620 | xfree (this_package_name); | |
7621 | } | |
7622 | } | |
7623 | } | |
7624 | } | |
7625 | ||
7626 | if (package_name != NULL) | |
7627 | { | |
7628 | struct objfile *objfile = cu->objfile; | |
10f0c4bb TT |
7629 | const char *saved_package_name = obstack_copy0 (&objfile->objfile_obstack, |
7630 | package_name, | |
7631 | strlen (package_name)); | |
a766d390 | 7632 | struct type *type = init_type (TYPE_CODE_MODULE, 0, 0, |
86f62fd7 | 7633 | saved_package_name, objfile); |
a766d390 DE |
7634 | struct symbol *sym; |
7635 | ||
7636 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
7637 | ||
e623cf5d | 7638 | sym = allocate_symbol (objfile); |
f85f34ed | 7639 | SYMBOL_SET_LANGUAGE (sym, language_go, &objfile->objfile_obstack); |
86f62fd7 TT |
7640 | SYMBOL_SET_NAMES (sym, saved_package_name, |
7641 | strlen (saved_package_name), 0, objfile); | |
a766d390 DE |
7642 | /* This is not VAR_DOMAIN because we want a way to ensure a lookup of, |
7643 | e.g., "main" finds the "main" module and not C's main(). */ | |
7644 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; | |
f1e6e072 | 7645 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
a766d390 DE |
7646 | SYMBOL_TYPE (sym) = type; |
7647 | ||
7648 | add_symbol_to_list (sym, &global_symbols); | |
7649 | ||
7650 | xfree (package_name); | |
7651 | } | |
7652 | } | |
7653 | ||
95554aad TT |
7654 | /* Return the symtab for PER_CU. This works properly regardless of |
7655 | whether we're using the index or psymtabs. */ | |
7656 | ||
7657 | static struct symtab * | |
7658 | get_symtab (struct dwarf2_per_cu_data *per_cu) | |
7659 | { | |
7660 | return (dwarf2_per_objfile->using_index | |
7661 | ? per_cu->v.quick->symtab | |
7662 | : per_cu->v.psymtab->symtab); | |
7663 | } | |
7664 | ||
7665 | /* A helper function for computing the list of all symbol tables | |
7666 | included by PER_CU. */ | |
7667 | ||
7668 | static void | |
ec94af83 DE |
7669 | recursively_compute_inclusions (VEC (symtab_ptr) **result, |
7670 | htab_t all_children, htab_t all_type_symtabs, | |
f9125b6c TT |
7671 | struct dwarf2_per_cu_data *per_cu, |
7672 | struct symtab *immediate_parent) | |
95554aad TT |
7673 | { |
7674 | void **slot; | |
7675 | int ix; | |
ec94af83 | 7676 | struct symtab *symtab; |
95554aad TT |
7677 | struct dwarf2_per_cu_data *iter; |
7678 | ||
7679 | slot = htab_find_slot (all_children, per_cu, INSERT); | |
7680 | if (*slot != NULL) | |
7681 | { | |
7682 | /* This inclusion and its children have been processed. */ | |
7683 | return; | |
7684 | } | |
7685 | ||
7686 | *slot = per_cu; | |
7687 | /* Only add a CU if it has a symbol table. */ | |
ec94af83 DE |
7688 | symtab = get_symtab (per_cu); |
7689 | if (symtab != NULL) | |
7690 | { | |
7691 | /* If this is a type unit only add its symbol table if we haven't | |
7692 | seen it yet (type unit per_cu's can share symtabs). */ | |
7693 | if (per_cu->is_debug_types) | |
7694 | { | |
7695 | slot = htab_find_slot (all_type_symtabs, symtab, INSERT); | |
7696 | if (*slot == NULL) | |
7697 | { | |
7698 | *slot = symtab; | |
7699 | VEC_safe_push (symtab_ptr, *result, symtab); | |
f9125b6c TT |
7700 | if (symtab->user == NULL) |
7701 | symtab->user = immediate_parent; | |
ec94af83 DE |
7702 | } |
7703 | } | |
7704 | else | |
f9125b6c TT |
7705 | { |
7706 | VEC_safe_push (symtab_ptr, *result, symtab); | |
7707 | if (symtab->user == NULL) | |
7708 | symtab->user = immediate_parent; | |
7709 | } | |
ec94af83 | 7710 | } |
95554aad TT |
7711 | |
7712 | for (ix = 0; | |
796a7ff8 | 7713 | VEC_iterate (dwarf2_per_cu_ptr, per_cu->imported_symtabs, ix, iter); |
95554aad | 7714 | ++ix) |
ec94af83 DE |
7715 | { |
7716 | recursively_compute_inclusions (result, all_children, | |
f9125b6c | 7717 | all_type_symtabs, iter, symtab); |
ec94af83 | 7718 | } |
95554aad TT |
7719 | } |
7720 | ||
7721 | /* Compute the symtab 'includes' fields for the symtab related to | |
7722 | PER_CU. */ | |
7723 | ||
7724 | static void | |
7725 | compute_symtab_includes (struct dwarf2_per_cu_data *per_cu) | |
7726 | { | |
f4dc4d17 DE |
7727 | gdb_assert (! per_cu->is_debug_types); |
7728 | ||
796a7ff8 | 7729 | if (!VEC_empty (dwarf2_per_cu_ptr, per_cu->imported_symtabs)) |
95554aad TT |
7730 | { |
7731 | int ix, len; | |
ec94af83 DE |
7732 | struct dwarf2_per_cu_data *per_cu_iter; |
7733 | struct symtab *symtab_iter; | |
7734 | VEC (symtab_ptr) *result_symtabs = NULL; | |
7735 | htab_t all_children, all_type_symtabs; | |
95554aad TT |
7736 | struct symtab *symtab = get_symtab (per_cu); |
7737 | ||
7738 | /* If we don't have a symtab, we can just skip this case. */ | |
7739 | if (symtab == NULL) | |
7740 | return; | |
7741 | ||
7742 | all_children = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, | |
7743 | NULL, xcalloc, xfree); | |
ec94af83 DE |
7744 | all_type_symtabs = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, |
7745 | NULL, xcalloc, xfree); | |
95554aad TT |
7746 | |
7747 | for (ix = 0; | |
796a7ff8 | 7748 | VEC_iterate (dwarf2_per_cu_ptr, per_cu->imported_symtabs, |
ec94af83 | 7749 | ix, per_cu_iter); |
95554aad | 7750 | ++ix) |
ec94af83 DE |
7751 | { |
7752 | recursively_compute_inclusions (&result_symtabs, all_children, | |
f9125b6c TT |
7753 | all_type_symtabs, per_cu_iter, |
7754 | symtab); | |
ec94af83 | 7755 | } |
95554aad | 7756 | |
ec94af83 DE |
7757 | /* Now we have a transitive closure of all the included symtabs. */ |
7758 | len = VEC_length (symtab_ptr, result_symtabs); | |
95554aad TT |
7759 | symtab->includes |
7760 | = obstack_alloc (&dwarf2_per_objfile->objfile->objfile_obstack, | |
7761 | (len + 1) * sizeof (struct symtab *)); | |
7762 | for (ix = 0; | |
ec94af83 | 7763 | VEC_iterate (symtab_ptr, result_symtabs, ix, symtab_iter); |
95554aad | 7764 | ++ix) |
ec94af83 | 7765 | symtab->includes[ix] = symtab_iter; |
95554aad TT |
7766 | symtab->includes[len] = NULL; |
7767 | ||
ec94af83 | 7768 | VEC_free (symtab_ptr, result_symtabs); |
95554aad | 7769 | htab_delete (all_children); |
ec94af83 | 7770 | htab_delete (all_type_symtabs); |
95554aad TT |
7771 | } |
7772 | } | |
7773 | ||
7774 | /* Compute the 'includes' field for the symtabs of all the CUs we just | |
7775 | read. */ | |
7776 | ||
7777 | static void | |
7778 | process_cu_includes (void) | |
7779 | { | |
7780 | int ix; | |
7781 | struct dwarf2_per_cu_data *iter; | |
7782 | ||
7783 | for (ix = 0; | |
7784 | VEC_iterate (dwarf2_per_cu_ptr, dwarf2_per_objfile->just_read_cus, | |
7785 | ix, iter); | |
7786 | ++ix) | |
f4dc4d17 DE |
7787 | { |
7788 | if (! iter->is_debug_types) | |
7789 | compute_symtab_includes (iter); | |
7790 | } | |
95554aad TT |
7791 | |
7792 | VEC_free (dwarf2_per_cu_ptr, dwarf2_per_objfile->just_read_cus); | |
7793 | } | |
7794 | ||
9cdd5dbd | 7795 | /* Generate full symbol information for PER_CU, whose DIEs have |
10b3939b DJ |
7796 | already been loaded into memory. */ |
7797 | ||
7798 | static void | |
95554aad TT |
7799 | process_full_comp_unit (struct dwarf2_per_cu_data *per_cu, |
7800 | enum language pretend_language) | |
10b3939b | 7801 | { |
10b3939b | 7802 | struct dwarf2_cu *cu = per_cu->cu; |
9291a0cd | 7803 | struct objfile *objfile = per_cu->objfile; |
10b3939b DJ |
7804 | CORE_ADDR lowpc, highpc; |
7805 | struct symtab *symtab; | |
3da10d80 | 7806 | struct cleanup *back_to, *delayed_list_cleanup; |
10b3939b | 7807 | CORE_ADDR baseaddr; |
4359dff1 | 7808 | struct block *static_block; |
10b3939b DJ |
7809 | |
7810 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
7811 | ||
10b3939b DJ |
7812 | buildsym_init (); |
7813 | back_to = make_cleanup (really_free_pendings, NULL); | |
3da10d80 | 7814 | delayed_list_cleanup = make_cleanup (free_delayed_list, cu); |
10b3939b DJ |
7815 | |
7816 | cu->list_in_scope = &file_symbols; | |
c906108c | 7817 | |
95554aad TT |
7818 | cu->language = pretend_language; |
7819 | cu->language_defn = language_def (cu->language); | |
7820 | ||
c906108c | 7821 | /* Do line number decoding in read_file_scope () */ |
10b3939b | 7822 | process_die (cu->dies, cu); |
c906108c | 7823 | |
a766d390 DE |
7824 | /* For now fudge the Go package. */ |
7825 | if (cu->language == language_go) | |
7826 | fixup_go_packaging (cu); | |
7827 | ||
3da10d80 KS |
7828 | /* Now that we have processed all the DIEs in the CU, all the types |
7829 | should be complete, and it should now be safe to compute all of the | |
7830 | physnames. */ | |
7831 | compute_delayed_physnames (cu); | |
7832 | do_cleanups (delayed_list_cleanup); | |
7833 | ||
fae299cd DC |
7834 | /* Some compilers don't define a DW_AT_high_pc attribute for the |
7835 | compilation unit. If the DW_AT_high_pc is missing, synthesize | |
7836 | it, by scanning the DIE's below the compilation unit. */ | |
10b3939b | 7837 | get_scope_pc_bounds (cu->dies, &lowpc, &highpc, cu); |
c906108c | 7838 | |
36586728 | 7839 | static_block |
ff546935 | 7840 | = end_symtab_get_static_block (highpc + baseaddr, objfile, 0, 1); |
4359dff1 JK |
7841 | |
7842 | /* If the comp unit has DW_AT_ranges, it may have discontiguous ranges. | |
7843 | Also, DW_AT_ranges may record ranges not belonging to any child DIEs | |
7844 | (such as virtual method tables). Record the ranges in STATIC_BLOCK's | |
7845 | addrmap to help ensure it has an accurate map of pc values belonging to | |
7846 | this comp unit. */ | |
7847 | dwarf2_record_block_ranges (cu->dies, static_block, baseaddr, cu); | |
7848 | ||
7849 | symtab = end_symtab_from_static_block (static_block, objfile, | |
7850 | SECT_OFF_TEXT (objfile), 0); | |
c906108c | 7851 | |
8be455d7 | 7852 | if (symtab != NULL) |
c906108c | 7853 | { |
df15bd07 | 7854 | int gcc_4_minor = producer_is_gcc_ge_4 (cu->producer); |
4632c0d0 | 7855 | |
8be455d7 JK |
7856 | /* Set symtab language to language from DW_AT_language. If the |
7857 | compilation is from a C file generated by language preprocessors, do | |
7858 | not set the language if it was already deduced by start_subfile. */ | |
7859 | if (!(cu->language == language_c && symtab->language != language_c)) | |
7860 | symtab->language = cu->language; | |
7861 | ||
7862 | /* GCC-4.0 has started to support -fvar-tracking. GCC-3.x still can | |
7863 | produce DW_AT_location with location lists but it can be possibly | |
ab260dad JK |
7864 | invalid without -fvar-tracking. Still up to GCC-4.4.x incl. 4.4.0 |
7865 | there were bugs in prologue debug info, fixed later in GCC-4.5 | |
7866 | by "unwind info for epilogues" patch (which is not directly related). | |
8be455d7 JK |
7867 | |
7868 | For -gdwarf-4 type units LOCATIONS_VALID indication is fortunately not | |
7869 | needed, it would be wrong due to missing DW_AT_producer there. | |
7870 | ||
7871 | Still one can confuse GDB by using non-standard GCC compilation | |
7872 | options - this waits on GCC PR other/32998 (-frecord-gcc-switches). | |
7873 | */ | |
ab260dad | 7874 | if (cu->has_loclist && gcc_4_minor >= 5) |
8be455d7 | 7875 | symtab->locations_valid = 1; |
e0d00bc7 JK |
7876 | |
7877 | if (gcc_4_minor >= 5) | |
7878 | symtab->epilogue_unwind_valid = 1; | |
96408a79 SA |
7879 | |
7880 | symtab->call_site_htab = cu->call_site_htab; | |
c906108c | 7881 | } |
9291a0cd TT |
7882 | |
7883 | if (dwarf2_per_objfile->using_index) | |
7884 | per_cu->v.quick->symtab = symtab; | |
7885 | else | |
7886 | { | |
7887 | struct partial_symtab *pst = per_cu->v.psymtab; | |
7888 | pst->symtab = symtab; | |
7889 | pst->readin = 1; | |
7890 | } | |
c906108c | 7891 | |
95554aad TT |
7892 | /* Push it for inclusion processing later. */ |
7893 | VEC_safe_push (dwarf2_per_cu_ptr, dwarf2_per_objfile->just_read_cus, per_cu); | |
7894 | ||
c906108c | 7895 | do_cleanups (back_to); |
f4dc4d17 | 7896 | } |
45cfd468 | 7897 | |
f4dc4d17 DE |
7898 | /* Generate full symbol information for type unit PER_CU, whose DIEs have |
7899 | already been loaded into memory. */ | |
7900 | ||
7901 | static void | |
7902 | process_full_type_unit (struct dwarf2_per_cu_data *per_cu, | |
7903 | enum language pretend_language) | |
7904 | { | |
7905 | struct dwarf2_cu *cu = per_cu->cu; | |
7906 | struct objfile *objfile = per_cu->objfile; | |
7907 | struct symtab *symtab; | |
7908 | struct cleanup *back_to, *delayed_list_cleanup; | |
0186c6a7 DE |
7909 | struct signatured_type *sig_type; |
7910 | ||
7911 | gdb_assert (per_cu->is_debug_types); | |
7912 | sig_type = (struct signatured_type *) per_cu; | |
f4dc4d17 DE |
7913 | |
7914 | buildsym_init (); | |
7915 | back_to = make_cleanup (really_free_pendings, NULL); | |
7916 | delayed_list_cleanup = make_cleanup (free_delayed_list, cu); | |
7917 | ||
7918 | cu->list_in_scope = &file_symbols; | |
7919 | ||
7920 | cu->language = pretend_language; | |
7921 | cu->language_defn = language_def (cu->language); | |
7922 | ||
7923 | /* The symbol tables are set up in read_type_unit_scope. */ | |
7924 | process_die (cu->dies, cu); | |
7925 | ||
7926 | /* For now fudge the Go package. */ | |
7927 | if (cu->language == language_go) | |
7928 | fixup_go_packaging (cu); | |
7929 | ||
7930 | /* Now that we have processed all the DIEs in the CU, all the types | |
7931 | should be complete, and it should now be safe to compute all of the | |
7932 | physnames. */ | |
7933 | compute_delayed_physnames (cu); | |
7934 | do_cleanups (delayed_list_cleanup); | |
7935 | ||
7936 | /* TUs share symbol tables. | |
7937 | If this is the first TU to use this symtab, complete the construction | |
094b34ac DE |
7938 | of it with end_expandable_symtab. Otherwise, complete the addition of |
7939 | this TU's symbols to the existing symtab. */ | |
0186c6a7 | 7940 | if (sig_type->type_unit_group->primary_symtab == NULL) |
45cfd468 | 7941 | { |
f4dc4d17 | 7942 | symtab = end_expandable_symtab (0, objfile, SECT_OFF_TEXT (objfile)); |
0186c6a7 | 7943 | sig_type->type_unit_group->primary_symtab = symtab; |
f4dc4d17 DE |
7944 | |
7945 | if (symtab != NULL) | |
7946 | { | |
7947 | /* Set symtab language to language from DW_AT_language. If the | |
7948 | compilation is from a C file generated by language preprocessors, | |
7949 | do not set the language if it was already deduced by | |
7950 | start_subfile. */ | |
7951 | if (!(cu->language == language_c && symtab->language != language_c)) | |
7952 | symtab->language = cu->language; | |
7953 | } | |
7954 | } | |
7955 | else | |
7956 | { | |
7957 | augment_type_symtab (objfile, | |
0186c6a7 DE |
7958 | sig_type->type_unit_group->primary_symtab); |
7959 | symtab = sig_type->type_unit_group->primary_symtab; | |
f4dc4d17 DE |
7960 | } |
7961 | ||
7962 | if (dwarf2_per_objfile->using_index) | |
7963 | per_cu->v.quick->symtab = symtab; | |
7964 | else | |
7965 | { | |
7966 | struct partial_symtab *pst = per_cu->v.psymtab; | |
7967 | pst->symtab = symtab; | |
7968 | pst->readin = 1; | |
45cfd468 | 7969 | } |
f4dc4d17 DE |
7970 | |
7971 | do_cleanups (back_to); | |
c906108c SS |
7972 | } |
7973 | ||
95554aad TT |
7974 | /* Process an imported unit DIE. */ |
7975 | ||
7976 | static void | |
7977 | process_imported_unit_die (struct die_info *die, struct dwarf2_cu *cu) | |
7978 | { | |
7979 | struct attribute *attr; | |
7980 | ||
f4dc4d17 DE |
7981 | /* For now we don't handle imported units in type units. */ |
7982 | if (cu->per_cu->is_debug_types) | |
7983 | { | |
7984 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
7985 | " supported in type units [in module %s]"), | |
4262abfb | 7986 | objfile_name (cu->objfile)); |
f4dc4d17 DE |
7987 | } |
7988 | ||
95554aad TT |
7989 | attr = dwarf2_attr (die, DW_AT_import, cu); |
7990 | if (attr != NULL) | |
7991 | { | |
7992 | struct dwarf2_per_cu_data *per_cu; | |
7993 | struct symtab *imported_symtab; | |
7994 | sect_offset offset; | |
36586728 | 7995 | int is_dwz; |
95554aad TT |
7996 | |
7997 | offset = dwarf2_get_ref_die_offset (attr); | |
36586728 TT |
7998 | is_dwz = (attr->form == DW_FORM_GNU_ref_alt || cu->per_cu->is_dwz); |
7999 | per_cu = dwarf2_find_containing_comp_unit (offset, is_dwz, cu->objfile); | |
95554aad | 8000 | |
69d751e3 | 8001 | /* If necessary, add it to the queue and load its DIEs. */ |
95554aad TT |
8002 | if (maybe_queue_comp_unit (cu, per_cu, cu->language)) |
8003 | load_full_comp_unit (per_cu, cu->language); | |
8004 | ||
796a7ff8 | 8005 | VEC_safe_push (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs, |
95554aad TT |
8006 | per_cu); |
8007 | } | |
8008 | } | |
8009 | ||
c906108c SS |
8010 | /* Process a die and its children. */ |
8011 | ||
8012 | static void | |
e7c27a73 | 8013 | process_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
8014 | { |
8015 | switch (die->tag) | |
8016 | { | |
8017 | case DW_TAG_padding: | |
8018 | break; | |
8019 | case DW_TAG_compile_unit: | |
95554aad | 8020 | case DW_TAG_partial_unit: |
e7c27a73 | 8021 | read_file_scope (die, cu); |
c906108c | 8022 | break; |
348e048f DE |
8023 | case DW_TAG_type_unit: |
8024 | read_type_unit_scope (die, cu); | |
8025 | break; | |
c906108c | 8026 | case DW_TAG_subprogram: |
c906108c | 8027 | case DW_TAG_inlined_subroutine: |
edb3359d | 8028 | read_func_scope (die, cu); |
c906108c SS |
8029 | break; |
8030 | case DW_TAG_lexical_block: | |
14898363 L |
8031 | case DW_TAG_try_block: |
8032 | case DW_TAG_catch_block: | |
e7c27a73 | 8033 | read_lexical_block_scope (die, cu); |
c906108c | 8034 | break; |
96408a79 SA |
8035 | case DW_TAG_GNU_call_site: |
8036 | read_call_site_scope (die, cu); | |
8037 | break; | |
c906108c | 8038 | case DW_TAG_class_type: |
680b30c7 | 8039 | case DW_TAG_interface_type: |
c906108c SS |
8040 | case DW_TAG_structure_type: |
8041 | case DW_TAG_union_type: | |
134d01f1 | 8042 | process_structure_scope (die, cu); |
c906108c SS |
8043 | break; |
8044 | case DW_TAG_enumeration_type: | |
134d01f1 | 8045 | process_enumeration_scope (die, cu); |
c906108c | 8046 | break; |
134d01f1 | 8047 | |
f792889a DJ |
8048 | /* These dies have a type, but processing them does not create |
8049 | a symbol or recurse to process the children. Therefore we can | |
8050 | read them on-demand through read_type_die. */ | |
c906108c | 8051 | case DW_TAG_subroutine_type: |
72019c9c | 8052 | case DW_TAG_set_type: |
c906108c | 8053 | case DW_TAG_array_type: |
c906108c | 8054 | case DW_TAG_pointer_type: |
c906108c | 8055 | case DW_TAG_ptr_to_member_type: |
c906108c | 8056 | case DW_TAG_reference_type: |
c906108c | 8057 | case DW_TAG_string_type: |
c906108c | 8058 | break; |
134d01f1 | 8059 | |
c906108c | 8060 | case DW_TAG_base_type: |
a02abb62 | 8061 | case DW_TAG_subrange_type: |
cb249c71 | 8062 | case DW_TAG_typedef: |
134d01f1 DJ |
8063 | /* Add a typedef symbol for the type definition, if it has a |
8064 | DW_AT_name. */ | |
f792889a | 8065 | new_symbol (die, read_type_die (die, cu), cu); |
a02abb62 | 8066 | break; |
c906108c | 8067 | case DW_TAG_common_block: |
e7c27a73 | 8068 | read_common_block (die, cu); |
c906108c SS |
8069 | break; |
8070 | case DW_TAG_common_inclusion: | |
8071 | break; | |
d9fa45fe | 8072 | case DW_TAG_namespace: |
4d4ec4e5 | 8073 | cu->processing_has_namespace_info = 1; |
e7c27a73 | 8074 | read_namespace (die, cu); |
d9fa45fe | 8075 | break; |
5d7cb8df | 8076 | case DW_TAG_module: |
4d4ec4e5 | 8077 | cu->processing_has_namespace_info = 1; |
5d7cb8df JK |
8078 | read_module (die, cu); |
8079 | break; | |
d9fa45fe | 8080 | case DW_TAG_imported_declaration: |
74921315 KS |
8081 | cu->processing_has_namespace_info = 1; |
8082 | if (read_namespace_alias (die, cu)) | |
8083 | break; | |
8084 | /* The declaration is not a global namespace alias: fall through. */ | |
d9fa45fe | 8085 | case DW_TAG_imported_module: |
4d4ec4e5 | 8086 | cu->processing_has_namespace_info = 1; |
27aa8d6a SW |
8087 | if (die->child != NULL && (die->tag == DW_TAG_imported_declaration |
8088 | || cu->language != language_fortran)) | |
8089 | complaint (&symfile_complaints, _("Tag '%s' has unexpected children"), | |
8090 | dwarf_tag_name (die->tag)); | |
8091 | read_import_statement (die, cu); | |
d9fa45fe | 8092 | break; |
95554aad TT |
8093 | |
8094 | case DW_TAG_imported_unit: | |
8095 | process_imported_unit_die (die, cu); | |
8096 | break; | |
8097 | ||
c906108c | 8098 | default: |
e7c27a73 | 8099 | new_symbol (die, NULL, cu); |
c906108c SS |
8100 | break; |
8101 | } | |
8102 | } | |
ca69b9e6 DE |
8103 | \f |
8104 | /* DWARF name computation. */ | |
c906108c | 8105 | |
94af9270 KS |
8106 | /* A helper function for dwarf2_compute_name which determines whether DIE |
8107 | needs to have the name of the scope prepended to the name listed in the | |
8108 | die. */ | |
8109 | ||
8110 | static int | |
8111 | die_needs_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
8112 | { | |
1c809c68 TT |
8113 | struct attribute *attr; |
8114 | ||
94af9270 KS |
8115 | switch (die->tag) |
8116 | { | |
8117 | case DW_TAG_namespace: | |
8118 | case DW_TAG_typedef: | |
8119 | case DW_TAG_class_type: | |
8120 | case DW_TAG_interface_type: | |
8121 | case DW_TAG_structure_type: | |
8122 | case DW_TAG_union_type: | |
8123 | case DW_TAG_enumeration_type: | |
8124 | case DW_TAG_enumerator: | |
8125 | case DW_TAG_subprogram: | |
8126 | case DW_TAG_member: | |
74921315 | 8127 | case DW_TAG_imported_declaration: |
94af9270 KS |
8128 | return 1; |
8129 | ||
8130 | case DW_TAG_variable: | |
c2b0a229 | 8131 | case DW_TAG_constant: |
94af9270 KS |
8132 | /* We only need to prefix "globally" visible variables. These include |
8133 | any variable marked with DW_AT_external or any variable that | |
8134 | lives in a namespace. [Variables in anonymous namespaces | |
8135 | require prefixing, but they are not DW_AT_external.] */ | |
8136 | ||
8137 | if (dwarf2_attr (die, DW_AT_specification, cu)) | |
8138 | { | |
8139 | struct dwarf2_cu *spec_cu = cu; | |
9a619af0 | 8140 | |
94af9270 KS |
8141 | return die_needs_namespace (die_specification (die, &spec_cu), |
8142 | spec_cu); | |
8143 | } | |
8144 | ||
1c809c68 | 8145 | attr = dwarf2_attr (die, DW_AT_external, cu); |
f55ee35c JK |
8146 | if (attr == NULL && die->parent->tag != DW_TAG_namespace |
8147 | && die->parent->tag != DW_TAG_module) | |
1c809c68 TT |
8148 | return 0; |
8149 | /* A variable in a lexical block of some kind does not need a | |
8150 | namespace, even though in C++ such variables may be external | |
8151 | and have a mangled name. */ | |
8152 | if (die->parent->tag == DW_TAG_lexical_block | |
8153 | || die->parent->tag == DW_TAG_try_block | |
1054b214 TT |
8154 | || die->parent->tag == DW_TAG_catch_block |
8155 | || die->parent->tag == DW_TAG_subprogram) | |
1c809c68 TT |
8156 | return 0; |
8157 | return 1; | |
94af9270 KS |
8158 | |
8159 | default: | |
8160 | return 0; | |
8161 | } | |
8162 | } | |
8163 | ||
98bfdba5 PA |
8164 | /* Retrieve the last character from a mem_file. */ |
8165 | ||
8166 | static void | |
8167 | do_ui_file_peek_last (void *object, const char *buffer, long length) | |
8168 | { | |
8169 | char *last_char_p = (char *) object; | |
8170 | ||
8171 | if (length > 0) | |
8172 | *last_char_p = buffer[length - 1]; | |
8173 | } | |
8174 | ||
94af9270 | 8175 | /* Compute the fully qualified name of DIE in CU. If PHYSNAME is nonzero, |
a766d390 DE |
8176 | compute the physname for the object, which include a method's: |
8177 | - formal parameters (C++/Java), | |
8178 | - receiver type (Go), | |
8179 | - return type (Java). | |
8180 | ||
8181 | The term "physname" is a bit confusing. | |
8182 | For C++, for example, it is the demangled name. | |
8183 | For Go, for example, it's the mangled name. | |
94af9270 | 8184 | |
af6b7be1 JB |
8185 | For Ada, return the DIE's linkage name rather than the fully qualified |
8186 | name. PHYSNAME is ignored.. | |
8187 | ||
94af9270 KS |
8188 | The result is allocated on the objfile_obstack and canonicalized. */ |
8189 | ||
8190 | static const char * | |
15d034d0 TT |
8191 | dwarf2_compute_name (const char *name, |
8192 | struct die_info *die, struct dwarf2_cu *cu, | |
94af9270 KS |
8193 | int physname) |
8194 | { | |
bb5ed363 DE |
8195 | struct objfile *objfile = cu->objfile; |
8196 | ||
94af9270 KS |
8197 | if (name == NULL) |
8198 | name = dwarf2_name (die, cu); | |
8199 | ||
f55ee35c JK |
8200 | /* For Fortran GDB prefers DW_AT_*linkage_name if present but otherwise |
8201 | compute it by typename_concat inside GDB. */ | |
8202 | if (cu->language == language_ada | |
8203 | || (cu->language == language_fortran && physname)) | |
8204 | { | |
8205 | /* For Ada unit, we prefer the linkage name over the name, as | |
8206 | the former contains the exported name, which the user expects | |
8207 | to be able to reference. Ideally, we want the user to be able | |
8208 | to reference this entity using either natural or linkage name, | |
8209 | but we haven't started looking at this enhancement yet. */ | |
8210 | struct attribute *attr; | |
8211 | ||
8212 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
8213 | if (attr == NULL) | |
8214 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
8215 | if (attr && DW_STRING (attr)) | |
8216 | return DW_STRING (attr); | |
8217 | } | |
8218 | ||
94af9270 KS |
8219 | /* These are the only languages we know how to qualify names in. */ |
8220 | if (name != NULL | |
f55ee35c JK |
8221 | && (cu->language == language_cplus || cu->language == language_java |
8222 | || cu->language == language_fortran)) | |
94af9270 KS |
8223 | { |
8224 | if (die_needs_namespace (die, cu)) | |
8225 | { | |
8226 | long length; | |
0d5cff50 | 8227 | const char *prefix; |
94af9270 KS |
8228 | struct ui_file *buf; |
8229 | ||
8230 | prefix = determine_prefix (die, cu); | |
8231 | buf = mem_fileopen (); | |
8232 | if (*prefix != '\0') | |
8233 | { | |
f55ee35c JK |
8234 | char *prefixed_name = typename_concat (NULL, prefix, name, |
8235 | physname, cu); | |
9a619af0 | 8236 | |
94af9270 KS |
8237 | fputs_unfiltered (prefixed_name, buf); |
8238 | xfree (prefixed_name); | |
8239 | } | |
8240 | else | |
62d5b8da | 8241 | fputs_unfiltered (name, buf); |
94af9270 | 8242 | |
98bfdba5 PA |
8243 | /* Template parameters may be specified in the DIE's DW_AT_name, or |
8244 | as children with DW_TAG_template_type_param or | |
8245 | DW_TAG_value_type_param. If the latter, add them to the name | |
8246 | here. If the name already has template parameters, then | |
8247 | skip this step; some versions of GCC emit both, and | |
8248 | it is more efficient to use the pre-computed name. | |
8249 | ||
8250 | Something to keep in mind about this process: it is very | |
8251 | unlikely, or in some cases downright impossible, to produce | |
8252 | something that will match the mangled name of a function. | |
8253 | If the definition of the function has the same debug info, | |
8254 | we should be able to match up with it anyway. But fallbacks | |
8255 | using the minimal symbol, for instance to find a method | |
8256 | implemented in a stripped copy of libstdc++, will not work. | |
8257 | If we do not have debug info for the definition, we will have to | |
8258 | match them up some other way. | |
8259 | ||
8260 | When we do name matching there is a related problem with function | |
8261 | templates; two instantiated function templates are allowed to | |
8262 | differ only by their return types, which we do not add here. */ | |
8263 | ||
8264 | if (cu->language == language_cplus && strchr (name, '<') == NULL) | |
8265 | { | |
8266 | struct attribute *attr; | |
8267 | struct die_info *child; | |
8268 | int first = 1; | |
8269 | ||
8270 | die->building_fullname = 1; | |
8271 | ||
8272 | for (child = die->child; child != NULL; child = child->sibling) | |
8273 | { | |
8274 | struct type *type; | |
12df843f | 8275 | LONGEST value; |
d521ce57 | 8276 | const gdb_byte *bytes; |
98bfdba5 PA |
8277 | struct dwarf2_locexpr_baton *baton; |
8278 | struct value *v; | |
8279 | ||
8280 | if (child->tag != DW_TAG_template_type_param | |
8281 | && child->tag != DW_TAG_template_value_param) | |
8282 | continue; | |
8283 | ||
8284 | if (first) | |
8285 | { | |
8286 | fputs_unfiltered ("<", buf); | |
8287 | first = 0; | |
8288 | } | |
8289 | else | |
8290 | fputs_unfiltered (", ", buf); | |
8291 | ||
8292 | attr = dwarf2_attr (child, DW_AT_type, cu); | |
8293 | if (attr == NULL) | |
8294 | { | |
8295 | complaint (&symfile_complaints, | |
8296 | _("template parameter missing DW_AT_type")); | |
8297 | fputs_unfiltered ("UNKNOWN_TYPE", buf); | |
8298 | continue; | |
8299 | } | |
8300 | type = die_type (child, cu); | |
8301 | ||
8302 | if (child->tag == DW_TAG_template_type_param) | |
8303 | { | |
79d43c61 | 8304 | c_print_type (type, "", buf, -1, 0, &type_print_raw_options); |
98bfdba5 PA |
8305 | continue; |
8306 | } | |
8307 | ||
8308 | attr = dwarf2_attr (child, DW_AT_const_value, cu); | |
8309 | if (attr == NULL) | |
8310 | { | |
8311 | complaint (&symfile_complaints, | |
3e43a32a MS |
8312 | _("template parameter missing " |
8313 | "DW_AT_const_value")); | |
98bfdba5 PA |
8314 | fputs_unfiltered ("UNKNOWN_VALUE", buf); |
8315 | continue; | |
8316 | } | |
8317 | ||
8318 | dwarf2_const_value_attr (attr, type, name, | |
8319 | &cu->comp_unit_obstack, cu, | |
8320 | &value, &bytes, &baton); | |
8321 | ||
8322 | if (TYPE_NOSIGN (type)) | |
8323 | /* GDB prints characters as NUMBER 'CHAR'. If that's | |
8324 | changed, this can use value_print instead. */ | |
8325 | c_printchar (value, type, buf); | |
8326 | else | |
8327 | { | |
8328 | struct value_print_options opts; | |
8329 | ||
8330 | if (baton != NULL) | |
8331 | v = dwarf2_evaluate_loc_desc (type, NULL, | |
8332 | baton->data, | |
8333 | baton->size, | |
8334 | baton->per_cu); | |
8335 | else if (bytes != NULL) | |
8336 | { | |
8337 | v = allocate_value (type); | |
8338 | memcpy (value_contents_writeable (v), bytes, | |
8339 | TYPE_LENGTH (type)); | |
8340 | } | |
8341 | else | |
8342 | v = value_from_longest (type, value); | |
8343 | ||
3e43a32a MS |
8344 | /* Specify decimal so that we do not depend on |
8345 | the radix. */ | |
98bfdba5 PA |
8346 | get_formatted_print_options (&opts, 'd'); |
8347 | opts.raw = 1; | |
8348 | value_print (v, buf, &opts); | |
8349 | release_value (v); | |
8350 | value_free (v); | |
8351 | } | |
8352 | } | |
8353 | ||
8354 | die->building_fullname = 0; | |
8355 | ||
8356 | if (!first) | |
8357 | { | |
8358 | /* Close the argument list, with a space if necessary | |
8359 | (nested templates). */ | |
8360 | char last_char = '\0'; | |
8361 | ui_file_put (buf, do_ui_file_peek_last, &last_char); | |
8362 | if (last_char == '>') | |
8363 | fputs_unfiltered (" >", buf); | |
8364 | else | |
8365 | fputs_unfiltered (">", buf); | |
8366 | } | |
8367 | } | |
8368 | ||
94af9270 KS |
8369 | /* For Java and C++ methods, append formal parameter type |
8370 | information, if PHYSNAME. */ | |
6e70227d | 8371 | |
94af9270 KS |
8372 | if (physname && die->tag == DW_TAG_subprogram |
8373 | && (cu->language == language_cplus | |
8374 | || cu->language == language_java)) | |
8375 | { | |
8376 | struct type *type = read_type_die (die, cu); | |
8377 | ||
79d43c61 TT |
8378 | c_type_print_args (type, buf, 1, cu->language, |
8379 | &type_print_raw_options); | |
94af9270 KS |
8380 | |
8381 | if (cu->language == language_java) | |
8382 | { | |
8383 | /* For java, we must append the return type to method | |
0963b4bd | 8384 | names. */ |
94af9270 KS |
8385 | if (die->tag == DW_TAG_subprogram) |
8386 | java_print_type (TYPE_TARGET_TYPE (type), "", buf, | |
79d43c61 | 8387 | 0, 0, &type_print_raw_options); |
94af9270 KS |
8388 | } |
8389 | else if (cu->language == language_cplus) | |
8390 | { | |
60430eff DJ |
8391 | /* Assume that an artificial first parameter is |
8392 | "this", but do not crash if it is not. RealView | |
8393 | marks unnamed (and thus unused) parameters as | |
8394 | artificial; there is no way to differentiate | |
8395 | the two cases. */ | |
94af9270 KS |
8396 | if (TYPE_NFIELDS (type) > 0 |
8397 | && TYPE_FIELD_ARTIFICIAL (type, 0) | |
60430eff | 8398 | && TYPE_CODE (TYPE_FIELD_TYPE (type, 0)) == TYPE_CODE_PTR |
3e43a32a MS |
8399 | && TYPE_CONST (TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, |
8400 | 0)))) | |
94af9270 KS |
8401 | fputs_unfiltered (" const", buf); |
8402 | } | |
8403 | } | |
8404 | ||
bb5ed363 | 8405 | name = ui_file_obsavestring (buf, &objfile->objfile_obstack, |
94af9270 KS |
8406 | &length); |
8407 | ui_file_delete (buf); | |
8408 | ||
8409 | if (cu->language == language_cplus) | |
8410 | { | |
15d034d0 | 8411 | const char *cname |
94af9270 | 8412 | = dwarf2_canonicalize_name (name, cu, |
bb5ed363 | 8413 | &objfile->objfile_obstack); |
9a619af0 | 8414 | |
94af9270 KS |
8415 | if (cname != NULL) |
8416 | name = cname; | |
8417 | } | |
8418 | } | |
8419 | } | |
8420 | ||
8421 | return name; | |
8422 | } | |
8423 | ||
0114d602 DJ |
8424 | /* Return the fully qualified name of DIE, based on its DW_AT_name. |
8425 | If scope qualifiers are appropriate they will be added. The result | |
8426 | will be allocated on the objfile_obstack, or NULL if the DIE does | |
94af9270 KS |
8427 | not have a name. NAME may either be from a previous call to |
8428 | dwarf2_name or NULL. | |
8429 | ||
0963b4bd | 8430 | The output string will be canonicalized (if C++/Java). */ |
0114d602 DJ |
8431 | |
8432 | static const char * | |
15d034d0 | 8433 | dwarf2_full_name (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
0114d602 | 8434 | { |
94af9270 KS |
8435 | return dwarf2_compute_name (name, die, cu, 0); |
8436 | } | |
0114d602 | 8437 | |
94af9270 KS |
8438 | /* Construct a physname for the given DIE in CU. NAME may either be |
8439 | from a previous call to dwarf2_name or NULL. The result will be | |
8440 | allocated on the objfile_objstack or NULL if the DIE does not have a | |
8441 | name. | |
0114d602 | 8442 | |
94af9270 | 8443 | The output string will be canonicalized (if C++/Java). */ |
0114d602 | 8444 | |
94af9270 | 8445 | static const char * |
15d034d0 | 8446 | dwarf2_physname (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
94af9270 | 8447 | { |
bb5ed363 | 8448 | struct objfile *objfile = cu->objfile; |
900e11f9 JK |
8449 | struct attribute *attr; |
8450 | const char *retval, *mangled = NULL, *canon = NULL; | |
8451 | struct cleanup *back_to; | |
8452 | int need_copy = 1; | |
8453 | ||
8454 | /* In this case dwarf2_compute_name is just a shortcut not building anything | |
8455 | on its own. */ | |
8456 | if (!die_needs_namespace (die, cu)) | |
8457 | return dwarf2_compute_name (name, die, cu, 1); | |
8458 | ||
8459 | back_to = make_cleanup (null_cleanup, NULL); | |
8460 | ||
8461 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
8462 | if (!attr) | |
8463 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
8464 | ||
8465 | /* DW_AT_linkage_name is missing in some cases - depend on what GDB | |
8466 | has computed. */ | |
8467 | if (attr && DW_STRING (attr)) | |
8468 | { | |
8469 | char *demangled; | |
8470 | ||
8471 | mangled = DW_STRING (attr); | |
8472 | ||
8473 | /* Use DMGL_RET_DROP for C++ template functions to suppress their return | |
8474 | type. It is easier for GDB users to search for such functions as | |
8475 | `name(params)' than `long name(params)'. In such case the minimal | |
8476 | symbol names do not match the full symbol names but for template | |
8477 | functions there is never a need to look up their definition from their | |
8478 | declaration so the only disadvantage remains the minimal symbol | |
8479 | variant `long name(params)' does not have the proper inferior type. | |
8480 | */ | |
8481 | ||
a766d390 DE |
8482 | if (cu->language == language_go) |
8483 | { | |
8484 | /* This is a lie, but we already lie to the caller new_symbol_full. | |
8485 | new_symbol_full assumes we return the mangled name. | |
8486 | This just undoes that lie until things are cleaned up. */ | |
8487 | demangled = NULL; | |
8488 | } | |
8489 | else | |
8490 | { | |
8de20a37 TT |
8491 | demangled = gdb_demangle (mangled, |
8492 | (DMGL_PARAMS | DMGL_ANSI | |
8493 | | (cu->language == language_java | |
8494 | ? DMGL_JAVA | DMGL_RET_POSTFIX | |
8495 | : DMGL_RET_DROP))); | |
a766d390 | 8496 | } |
900e11f9 JK |
8497 | if (demangled) |
8498 | { | |
8499 | make_cleanup (xfree, demangled); | |
8500 | canon = demangled; | |
8501 | } | |
8502 | else | |
8503 | { | |
8504 | canon = mangled; | |
8505 | need_copy = 0; | |
8506 | } | |
8507 | } | |
8508 | ||
8509 | if (canon == NULL || check_physname) | |
8510 | { | |
8511 | const char *physname = dwarf2_compute_name (name, die, cu, 1); | |
8512 | ||
8513 | if (canon != NULL && strcmp (physname, canon) != 0) | |
8514 | { | |
8515 | /* It may not mean a bug in GDB. The compiler could also | |
8516 | compute DW_AT_linkage_name incorrectly. But in such case | |
8517 | GDB would need to be bug-to-bug compatible. */ | |
8518 | ||
8519 | complaint (&symfile_complaints, | |
8520 | _("Computed physname <%s> does not match demangled <%s> " | |
8521 | "(from linkage <%s>) - DIE at 0x%x [in module %s]"), | |
4262abfb JK |
8522 | physname, canon, mangled, die->offset.sect_off, |
8523 | objfile_name (objfile)); | |
900e11f9 JK |
8524 | |
8525 | /* Prefer DW_AT_linkage_name (in the CANON form) - when it | |
8526 | is available here - over computed PHYSNAME. It is safer | |
8527 | against both buggy GDB and buggy compilers. */ | |
8528 | ||
8529 | retval = canon; | |
8530 | } | |
8531 | else | |
8532 | { | |
8533 | retval = physname; | |
8534 | need_copy = 0; | |
8535 | } | |
8536 | } | |
8537 | else | |
8538 | retval = canon; | |
8539 | ||
8540 | if (need_copy) | |
10f0c4bb | 8541 | retval = obstack_copy0 (&objfile->objfile_obstack, retval, strlen (retval)); |
900e11f9 JK |
8542 | |
8543 | do_cleanups (back_to); | |
8544 | return retval; | |
0114d602 DJ |
8545 | } |
8546 | ||
74921315 KS |
8547 | /* Inspect DIE in CU for a namespace alias. If one exists, record |
8548 | a new symbol for it. | |
8549 | ||
8550 | Returns 1 if a namespace alias was recorded, 0 otherwise. */ | |
8551 | ||
8552 | static int | |
8553 | read_namespace_alias (struct die_info *die, struct dwarf2_cu *cu) | |
8554 | { | |
8555 | struct attribute *attr; | |
8556 | ||
8557 | /* If the die does not have a name, this is not a namespace | |
8558 | alias. */ | |
8559 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
8560 | if (attr != NULL) | |
8561 | { | |
8562 | int num; | |
8563 | struct die_info *d = die; | |
8564 | struct dwarf2_cu *imported_cu = cu; | |
8565 | ||
8566 | /* If the compiler has nested DW_AT_imported_declaration DIEs, | |
8567 | keep inspecting DIEs until we hit the underlying import. */ | |
8568 | #define MAX_NESTED_IMPORTED_DECLARATIONS 100 | |
8569 | for (num = 0; num < MAX_NESTED_IMPORTED_DECLARATIONS; ++num) | |
8570 | { | |
8571 | attr = dwarf2_attr (d, DW_AT_import, cu); | |
8572 | if (attr == NULL) | |
8573 | break; | |
8574 | ||
8575 | d = follow_die_ref (d, attr, &imported_cu); | |
8576 | if (d->tag != DW_TAG_imported_declaration) | |
8577 | break; | |
8578 | } | |
8579 | ||
8580 | if (num == MAX_NESTED_IMPORTED_DECLARATIONS) | |
8581 | { | |
8582 | complaint (&symfile_complaints, | |
8583 | _("DIE at 0x%x has too many recursively imported " | |
8584 | "declarations"), d->offset.sect_off); | |
8585 | return 0; | |
8586 | } | |
8587 | ||
8588 | if (attr != NULL) | |
8589 | { | |
8590 | struct type *type; | |
8591 | sect_offset offset = dwarf2_get_ref_die_offset (attr); | |
8592 | ||
8593 | type = get_die_type_at_offset (offset, cu->per_cu); | |
8594 | if (type != NULL && TYPE_CODE (type) == TYPE_CODE_NAMESPACE) | |
8595 | { | |
8596 | /* This declaration is a global namespace alias. Add | |
8597 | a symbol for it whose type is the aliased namespace. */ | |
8598 | new_symbol (die, type, cu); | |
8599 | return 1; | |
8600 | } | |
8601 | } | |
8602 | } | |
8603 | ||
8604 | return 0; | |
8605 | } | |
8606 | ||
27aa8d6a SW |
8607 | /* Read the import statement specified by the given die and record it. */ |
8608 | ||
8609 | static void | |
8610 | read_import_statement (struct die_info *die, struct dwarf2_cu *cu) | |
8611 | { | |
bb5ed363 | 8612 | struct objfile *objfile = cu->objfile; |
27aa8d6a | 8613 | struct attribute *import_attr; |
32019081 | 8614 | struct die_info *imported_die, *child_die; |
de4affc9 | 8615 | struct dwarf2_cu *imported_cu; |
27aa8d6a | 8616 | const char *imported_name; |
794684b6 | 8617 | const char *imported_name_prefix; |
13387711 SW |
8618 | const char *canonical_name; |
8619 | const char *import_alias; | |
8620 | const char *imported_declaration = NULL; | |
794684b6 | 8621 | const char *import_prefix; |
32019081 JK |
8622 | VEC (const_char_ptr) *excludes = NULL; |
8623 | struct cleanup *cleanups; | |
13387711 | 8624 | |
27aa8d6a SW |
8625 | import_attr = dwarf2_attr (die, DW_AT_import, cu); |
8626 | if (import_attr == NULL) | |
8627 | { | |
8628 | complaint (&symfile_complaints, _("Tag '%s' has no DW_AT_import"), | |
8629 | dwarf_tag_name (die->tag)); | |
8630 | return; | |
8631 | } | |
8632 | ||
de4affc9 CC |
8633 | imported_cu = cu; |
8634 | imported_die = follow_die_ref_or_sig (die, import_attr, &imported_cu); | |
8635 | imported_name = dwarf2_name (imported_die, imported_cu); | |
27aa8d6a SW |
8636 | if (imported_name == NULL) |
8637 | { | |
8638 | /* GCC bug: https://bugzilla.redhat.com/show_bug.cgi?id=506524 | |
8639 | ||
8640 | The import in the following code: | |
8641 | namespace A | |
8642 | { | |
8643 | typedef int B; | |
8644 | } | |
8645 | ||
8646 | int main () | |
8647 | { | |
8648 | using A::B; | |
8649 | B b; | |
8650 | return b; | |
8651 | } | |
8652 | ||
8653 | ... | |
8654 | <2><51>: Abbrev Number: 3 (DW_TAG_imported_declaration) | |
8655 | <52> DW_AT_decl_file : 1 | |
8656 | <53> DW_AT_decl_line : 6 | |
8657 | <54> DW_AT_import : <0x75> | |
8658 | <2><58>: Abbrev Number: 4 (DW_TAG_typedef) | |
8659 | <59> DW_AT_name : B | |
8660 | <5b> DW_AT_decl_file : 1 | |
8661 | <5c> DW_AT_decl_line : 2 | |
8662 | <5d> DW_AT_type : <0x6e> | |
8663 | ... | |
8664 | <1><75>: Abbrev Number: 7 (DW_TAG_base_type) | |
8665 | <76> DW_AT_byte_size : 4 | |
8666 | <77> DW_AT_encoding : 5 (signed) | |
8667 | ||
8668 | imports the wrong die ( 0x75 instead of 0x58 ). | |
8669 | This case will be ignored until the gcc bug is fixed. */ | |
8670 | return; | |
8671 | } | |
8672 | ||
82856980 SW |
8673 | /* Figure out the local name after import. */ |
8674 | import_alias = dwarf2_name (die, cu); | |
27aa8d6a | 8675 | |
794684b6 SW |
8676 | /* Figure out where the statement is being imported to. */ |
8677 | import_prefix = determine_prefix (die, cu); | |
8678 | ||
8679 | /* Figure out what the scope of the imported die is and prepend it | |
8680 | to the name of the imported die. */ | |
de4affc9 | 8681 | imported_name_prefix = determine_prefix (imported_die, imported_cu); |
794684b6 | 8682 | |
f55ee35c JK |
8683 | if (imported_die->tag != DW_TAG_namespace |
8684 | && imported_die->tag != DW_TAG_module) | |
794684b6 | 8685 | { |
13387711 SW |
8686 | imported_declaration = imported_name; |
8687 | canonical_name = imported_name_prefix; | |
794684b6 | 8688 | } |
13387711 | 8689 | else if (strlen (imported_name_prefix) > 0) |
12aaed36 TT |
8690 | canonical_name = obconcat (&objfile->objfile_obstack, |
8691 | imported_name_prefix, "::", imported_name, | |
8692 | (char *) NULL); | |
13387711 SW |
8693 | else |
8694 | canonical_name = imported_name; | |
794684b6 | 8695 | |
32019081 JK |
8696 | cleanups = make_cleanup (VEC_cleanup (const_char_ptr), &excludes); |
8697 | ||
8698 | if (die->tag == DW_TAG_imported_module && cu->language == language_fortran) | |
8699 | for (child_die = die->child; child_die && child_die->tag; | |
8700 | child_die = sibling_die (child_die)) | |
8701 | { | |
8702 | /* DWARF-4: A Fortran use statement with a “rename list” may be | |
8703 | represented by an imported module entry with an import attribute | |
8704 | referring to the module and owned entries corresponding to those | |
8705 | entities that are renamed as part of being imported. */ | |
8706 | ||
8707 | if (child_die->tag != DW_TAG_imported_declaration) | |
8708 | { | |
8709 | complaint (&symfile_complaints, | |
8710 | _("child DW_TAG_imported_declaration expected " | |
8711 | "- DIE at 0x%x [in module %s]"), | |
4262abfb | 8712 | child_die->offset.sect_off, objfile_name (objfile)); |
32019081 JK |
8713 | continue; |
8714 | } | |
8715 | ||
8716 | import_attr = dwarf2_attr (child_die, DW_AT_import, cu); | |
8717 | if (import_attr == NULL) | |
8718 | { | |
8719 | complaint (&symfile_complaints, _("Tag '%s' has no DW_AT_import"), | |
8720 | dwarf_tag_name (child_die->tag)); | |
8721 | continue; | |
8722 | } | |
8723 | ||
8724 | imported_cu = cu; | |
8725 | imported_die = follow_die_ref_or_sig (child_die, import_attr, | |
8726 | &imported_cu); | |
8727 | imported_name = dwarf2_name (imported_die, imported_cu); | |
8728 | if (imported_name == NULL) | |
8729 | { | |
8730 | complaint (&symfile_complaints, | |
8731 | _("child DW_TAG_imported_declaration has unknown " | |
8732 | "imported name - DIE at 0x%x [in module %s]"), | |
4262abfb | 8733 | child_die->offset.sect_off, objfile_name (objfile)); |
32019081 JK |
8734 | continue; |
8735 | } | |
8736 | ||
8737 | VEC_safe_push (const_char_ptr, excludes, imported_name); | |
8738 | ||
8739 | process_die (child_die, cu); | |
8740 | } | |
8741 | ||
c0cc3a76 SW |
8742 | cp_add_using_directive (import_prefix, |
8743 | canonical_name, | |
8744 | import_alias, | |
13387711 | 8745 | imported_declaration, |
32019081 | 8746 | excludes, |
12aaed36 | 8747 | 0, |
bb5ed363 | 8748 | &objfile->objfile_obstack); |
32019081 JK |
8749 | |
8750 | do_cleanups (cleanups); | |
27aa8d6a SW |
8751 | } |
8752 | ||
f4dc4d17 | 8753 | /* Cleanup function for handle_DW_AT_stmt_list. */ |
ae2de4f8 | 8754 | |
cb1df416 DJ |
8755 | static void |
8756 | free_cu_line_header (void *arg) | |
8757 | { | |
8758 | struct dwarf2_cu *cu = arg; | |
8759 | ||
8760 | free_line_header (cu->line_header); | |
8761 | cu->line_header = NULL; | |
8762 | } | |
8763 | ||
1b80a9fa JK |
8764 | /* Check for possibly missing DW_AT_comp_dir with relative .debug_line |
8765 | directory paths. GCC SVN r127613 (new option -fdebug-prefix-map) fixed | |
8766 | this, it was first present in GCC release 4.3.0. */ | |
8767 | ||
8768 | static int | |
8769 | producer_is_gcc_lt_4_3 (struct dwarf2_cu *cu) | |
8770 | { | |
8771 | if (!cu->checked_producer) | |
8772 | check_producer (cu); | |
8773 | ||
8774 | return cu->producer_is_gcc_lt_4_3; | |
8775 | } | |
8776 | ||
9291a0cd TT |
8777 | static void |
8778 | find_file_and_directory (struct die_info *die, struct dwarf2_cu *cu, | |
15d034d0 | 8779 | const char **name, const char **comp_dir) |
9291a0cd TT |
8780 | { |
8781 | struct attribute *attr; | |
8782 | ||
8783 | *name = NULL; | |
8784 | *comp_dir = NULL; | |
8785 | ||
8786 | /* Find the filename. Do not use dwarf2_name here, since the filename | |
8787 | is not a source language identifier. */ | |
8788 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
8789 | if (attr) | |
8790 | { | |
8791 | *name = DW_STRING (attr); | |
8792 | } | |
8793 | ||
8794 | attr = dwarf2_attr (die, DW_AT_comp_dir, cu); | |
8795 | if (attr) | |
8796 | *comp_dir = DW_STRING (attr); | |
1b80a9fa JK |
8797 | else if (producer_is_gcc_lt_4_3 (cu) && *name != NULL |
8798 | && IS_ABSOLUTE_PATH (*name)) | |
9291a0cd | 8799 | { |
15d034d0 TT |
8800 | char *d = ldirname (*name); |
8801 | ||
8802 | *comp_dir = d; | |
8803 | if (d != NULL) | |
8804 | make_cleanup (xfree, d); | |
9291a0cd TT |
8805 | } |
8806 | if (*comp_dir != NULL) | |
8807 | { | |
8808 | /* Irix 6.2 native cc prepends <machine>.: to the compilation | |
8809 | directory, get rid of it. */ | |
8810 | char *cp = strchr (*comp_dir, ':'); | |
8811 | ||
8812 | if (cp && cp != *comp_dir && cp[-1] == '.' && cp[1] == '/') | |
8813 | *comp_dir = cp + 1; | |
8814 | } | |
8815 | ||
8816 | if (*name == NULL) | |
8817 | *name = "<unknown>"; | |
8818 | } | |
8819 | ||
f4dc4d17 DE |
8820 | /* Handle DW_AT_stmt_list for a compilation unit. |
8821 | DIE is the DW_TAG_compile_unit die for CU. | |
f3f5162e DE |
8822 | COMP_DIR is the compilation directory. |
8823 | WANT_LINE_INFO is non-zero if the pc/line-number mapping is needed. */ | |
2ab95328 TT |
8824 | |
8825 | static void | |
8826 | handle_DW_AT_stmt_list (struct die_info *die, struct dwarf2_cu *cu, | |
b385a60d | 8827 | const char *comp_dir) /* ARI: editCase function */ |
2ab95328 TT |
8828 | { |
8829 | struct attribute *attr; | |
2ab95328 | 8830 | |
f4dc4d17 DE |
8831 | gdb_assert (! cu->per_cu->is_debug_types); |
8832 | ||
2ab95328 TT |
8833 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
8834 | if (attr) | |
8835 | { | |
8836 | unsigned int line_offset = DW_UNSND (attr); | |
8837 | struct line_header *line_header | |
3019eac3 | 8838 | = dwarf_decode_line_header (line_offset, cu); |
2ab95328 TT |
8839 | |
8840 | if (line_header) | |
dee91e82 DE |
8841 | { |
8842 | cu->line_header = line_header; | |
8843 | make_cleanup (free_cu_line_header, cu); | |
f4dc4d17 | 8844 | dwarf_decode_lines (line_header, comp_dir, cu, NULL, 1); |
dee91e82 | 8845 | } |
2ab95328 TT |
8846 | } |
8847 | } | |
8848 | ||
95554aad | 8849 | /* Process DW_TAG_compile_unit or DW_TAG_partial_unit. */ |
ae2de4f8 | 8850 | |
c906108c | 8851 | static void |
e7c27a73 | 8852 | read_file_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 8853 | { |
dee91e82 | 8854 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
debd256d | 8855 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
2acceee2 | 8856 | CORE_ADDR lowpc = ((CORE_ADDR) -1); |
c906108c SS |
8857 | CORE_ADDR highpc = ((CORE_ADDR) 0); |
8858 | struct attribute *attr; | |
15d034d0 TT |
8859 | const char *name = NULL; |
8860 | const char *comp_dir = NULL; | |
c906108c SS |
8861 | struct die_info *child_die; |
8862 | bfd *abfd = objfile->obfd; | |
e142c38c | 8863 | CORE_ADDR baseaddr; |
6e70227d | 8864 | |
e142c38c | 8865 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c | 8866 | |
fae299cd | 8867 | get_scope_pc_bounds (die, &lowpc, &highpc, cu); |
c906108c SS |
8868 | |
8869 | /* If we didn't find a lowpc, set it to highpc to avoid complaints | |
8870 | from finish_block. */ | |
2acceee2 | 8871 | if (lowpc == ((CORE_ADDR) -1)) |
c906108c SS |
8872 | lowpc = highpc; |
8873 | lowpc += baseaddr; | |
8874 | highpc += baseaddr; | |
8875 | ||
9291a0cd | 8876 | find_file_and_directory (die, cu, &name, &comp_dir); |
e1024ff1 | 8877 | |
95554aad | 8878 | prepare_one_comp_unit (cu, die, cu->language); |
303b6f5d | 8879 | |
f4b8a18d KW |
8880 | /* The XLCL doesn't generate DW_LANG_OpenCL because this attribute is not |
8881 | standardised yet. As a workaround for the language detection we fall | |
8882 | back to the DW_AT_producer string. */ | |
8883 | if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL") != NULL) | |
8884 | cu->language = language_opencl; | |
8885 | ||
3019eac3 DE |
8886 | /* Similar hack for Go. */ |
8887 | if (cu->producer && strstr (cu->producer, "GNU Go ") != NULL) | |
8888 | set_cu_language (DW_LANG_Go, cu); | |
8889 | ||
f4dc4d17 | 8890 | dwarf2_start_symtab (cu, name, comp_dir, lowpc); |
3019eac3 DE |
8891 | |
8892 | /* Decode line number information if present. We do this before | |
8893 | processing child DIEs, so that the line header table is available | |
8894 | for DW_AT_decl_file. */ | |
f4dc4d17 | 8895 | handle_DW_AT_stmt_list (die, cu, comp_dir); |
3019eac3 DE |
8896 | |
8897 | /* Process all dies in compilation unit. */ | |
8898 | if (die->child != NULL) | |
8899 | { | |
8900 | child_die = die->child; | |
8901 | while (child_die && child_die->tag) | |
8902 | { | |
8903 | process_die (child_die, cu); | |
8904 | child_die = sibling_die (child_die); | |
8905 | } | |
8906 | } | |
8907 | ||
8908 | /* Decode macro information, if present. Dwarf 2 macro information | |
8909 | refers to information in the line number info statement program | |
8910 | header, so we can only read it if we've read the header | |
8911 | successfully. */ | |
8912 | attr = dwarf2_attr (die, DW_AT_GNU_macros, cu); | |
8913 | if (attr && cu->line_header) | |
8914 | { | |
8915 | if (dwarf2_attr (die, DW_AT_macro_info, cu)) | |
8916 | complaint (&symfile_complaints, | |
8917 | _("CU refers to both DW_AT_GNU_macros and DW_AT_macro_info")); | |
8918 | ||
09262596 | 8919 | dwarf_decode_macros (cu, DW_UNSND (attr), comp_dir, 1); |
3019eac3 DE |
8920 | } |
8921 | else | |
8922 | { | |
8923 | attr = dwarf2_attr (die, DW_AT_macro_info, cu); | |
8924 | if (attr && cu->line_header) | |
8925 | { | |
8926 | unsigned int macro_offset = DW_UNSND (attr); | |
8927 | ||
09262596 | 8928 | dwarf_decode_macros (cu, macro_offset, comp_dir, 0); |
3019eac3 DE |
8929 | } |
8930 | } | |
8931 | ||
8932 | do_cleanups (back_to); | |
8933 | } | |
8934 | ||
f4dc4d17 DE |
8935 | /* TU version of handle_DW_AT_stmt_list for read_type_unit_scope. |
8936 | Create the set of symtabs used by this TU, or if this TU is sharing | |
8937 | symtabs with another TU and the symtabs have already been created | |
8938 | then restore those symtabs in the line header. | |
8939 | We don't need the pc/line-number mapping for type units. */ | |
3019eac3 DE |
8940 | |
8941 | static void | |
f4dc4d17 | 8942 | setup_type_unit_groups (struct die_info *die, struct dwarf2_cu *cu) |
3019eac3 | 8943 | { |
f4dc4d17 DE |
8944 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8945 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; | |
8946 | struct type_unit_group *tu_group; | |
8947 | int first_time; | |
8948 | struct line_header *lh; | |
3019eac3 | 8949 | struct attribute *attr; |
f4dc4d17 | 8950 | unsigned int i, line_offset; |
0186c6a7 | 8951 | struct signatured_type *sig_type; |
3019eac3 | 8952 | |
f4dc4d17 | 8953 | gdb_assert (per_cu->is_debug_types); |
0186c6a7 | 8954 | sig_type = (struct signatured_type *) per_cu; |
3019eac3 | 8955 | |
f4dc4d17 | 8956 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
3019eac3 | 8957 | |
f4dc4d17 | 8958 | /* If we're using .gdb_index (includes -readnow) then |
74e04d1c | 8959 | per_cu->type_unit_group may not have been set up yet. */ |
0186c6a7 DE |
8960 | if (sig_type->type_unit_group == NULL) |
8961 | sig_type->type_unit_group = get_type_unit_group (cu, attr); | |
8962 | tu_group = sig_type->type_unit_group; | |
f4dc4d17 DE |
8963 | |
8964 | /* If we've already processed this stmt_list there's no real need to | |
8965 | do it again, we could fake it and just recreate the part we need | |
8966 | (file name,index -> symtab mapping). If data shows this optimization | |
8967 | is useful we can do it then. */ | |
8968 | first_time = tu_group->primary_symtab == NULL; | |
8969 | ||
8970 | /* We have to handle the case of both a missing DW_AT_stmt_list or bad | |
8971 | debug info. */ | |
8972 | lh = NULL; | |
8973 | if (attr != NULL) | |
3019eac3 | 8974 | { |
f4dc4d17 DE |
8975 | line_offset = DW_UNSND (attr); |
8976 | lh = dwarf_decode_line_header (line_offset, cu); | |
8977 | } | |
8978 | if (lh == NULL) | |
8979 | { | |
8980 | if (first_time) | |
8981 | dwarf2_start_symtab (cu, "", NULL, 0); | |
8982 | else | |
8983 | { | |
8984 | gdb_assert (tu_group->symtabs == NULL); | |
8985 | restart_symtab (0); | |
8986 | } | |
8987 | /* Note: The primary symtab will get allocated at the end. */ | |
8988 | return; | |
3019eac3 DE |
8989 | } |
8990 | ||
f4dc4d17 DE |
8991 | cu->line_header = lh; |
8992 | make_cleanup (free_cu_line_header, cu); | |
3019eac3 | 8993 | |
f4dc4d17 DE |
8994 | if (first_time) |
8995 | { | |
8996 | dwarf2_start_symtab (cu, "", NULL, 0); | |
3019eac3 | 8997 | |
f4dc4d17 DE |
8998 | tu_group->num_symtabs = lh->num_file_names; |
8999 | tu_group->symtabs = XNEWVEC (struct symtab *, lh->num_file_names); | |
3019eac3 | 9000 | |
f4dc4d17 DE |
9001 | for (i = 0; i < lh->num_file_names; ++i) |
9002 | { | |
d521ce57 | 9003 | const char *dir = NULL; |
f4dc4d17 | 9004 | struct file_entry *fe = &lh->file_names[i]; |
3019eac3 | 9005 | |
f4dc4d17 DE |
9006 | if (fe->dir_index) |
9007 | dir = lh->include_dirs[fe->dir_index - 1]; | |
9008 | dwarf2_start_subfile (fe->name, dir, NULL); | |
3019eac3 | 9009 | |
f4dc4d17 DE |
9010 | /* Note: We don't have to watch for the main subfile here, type units |
9011 | don't have DW_AT_name. */ | |
3019eac3 | 9012 | |
f4dc4d17 DE |
9013 | if (current_subfile->symtab == NULL) |
9014 | { | |
9015 | /* NOTE: start_subfile will recognize when it's been passed | |
9016 | a file it has already seen. So we can't assume there's a | |
9017 | simple mapping from lh->file_names to subfiles, | |
9018 | lh->file_names may contain dups. */ | |
9019 | current_subfile->symtab = allocate_symtab (current_subfile->name, | |
9020 | objfile); | |
9021 | } | |
9022 | ||
9023 | fe->symtab = current_subfile->symtab; | |
9024 | tu_group->symtabs[i] = fe->symtab; | |
9025 | } | |
9026 | } | |
9027 | else | |
3019eac3 | 9028 | { |
f4dc4d17 DE |
9029 | restart_symtab (0); |
9030 | ||
9031 | for (i = 0; i < lh->num_file_names; ++i) | |
9032 | { | |
9033 | struct file_entry *fe = &lh->file_names[i]; | |
9034 | ||
9035 | fe->symtab = tu_group->symtabs[i]; | |
9036 | } | |
3019eac3 DE |
9037 | } |
9038 | ||
f4dc4d17 DE |
9039 | /* The main symtab is allocated last. Type units don't have DW_AT_name |
9040 | so they don't have a "real" (so to speak) symtab anyway. | |
9041 | There is later code that will assign the main symtab to all symbols | |
9042 | that don't have one. We need to handle the case of a symbol with a | |
9043 | missing symtab (DW_AT_decl_file) anyway. */ | |
9044 | } | |
3019eac3 | 9045 | |
f4dc4d17 DE |
9046 | /* Process DW_TAG_type_unit. |
9047 | For TUs we want to skip the first top level sibling if it's not the | |
9048 | actual type being defined by this TU. In this case the first top | |
9049 | level sibling is there to provide context only. */ | |
3019eac3 | 9050 | |
f4dc4d17 DE |
9051 | static void |
9052 | read_type_unit_scope (struct die_info *die, struct dwarf2_cu *cu) | |
9053 | { | |
9054 | struct die_info *child_die; | |
3019eac3 | 9055 | |
f4dc4d17 DE |
9056 | prepare_one_comp_unit (cu, die, language_minimal); |
9057 | ||
9058 | /* Initialize (or reinitialize) the machinery for building symtabs. | |
9059 | We do this before processing child DIEs, so that the line header table | |
9060 | is available for DW_AT_decl_file. */ | |
9061 | setup_type_unit_groups (die, cu); | |
9062 | ||
9063 | if (die->child != NULL) | |
9064 | { | |
9065 | child_die = die->child; | |
9066 | while (child_die && child_die->tag) | |
9067 | { | |
9068 | process_die (child_die, cu); | |
9069 | child_die = sibling_die (child_die); | |
9070 | } | |
9071 | } | |
3019eac3 DE |
9072 | } |
9073 | \f | |
80626a55 DE |
9074 | /* DWO/DWP files. |
9075 | ||
9076 | http://gcc.gnu.org/wiki/DebugFission | |
9077 | http://gcc.gnu.org/wiki/DebugFissionDWP | |
9078 | ||
9079 | To simplify handling of both DWO files ("object" files with the DWARF info) | |
9080 | and DWP files (a file with the DWOs packaged up into one file), we treat | |
9081 | DWP files as having a collection of virtual DWO files. */ | |
3019eac3 DE |
9082 | |
9083 | static hashval_t | |
9084 | hash_dwo_file (const void *item) | |
9085 | { | |
9086 | const struct dwo_file *dwo_file = item; | |
a2ce51a0 | 9087 | hashval_t hash; |
3019eac3 | 9088 | |
a2ce51a0 DE |
9089 | hash = htab_hash_string (dwo_file->dwo_name); |
9090 | if (dwo_file->comp_dir != NULL) | |
9091 | hash += htab_hash_string (dwo_file->comp_dir); | |
9092 | return hash; | |
3019eac3 DE |
9093 | } |
9094 | ||
9095 | static int | |
9096 | eq_dwo_file (const void *item_lhs, const void *item_rhs) | |
9097 | { | |
9098 | const struct dwo_file *lhs = item_lhs; | |
9099 | const struct dwo_file *rhs = item_rhs; | |
9100 | ||
a2ce51a0 DE |
9101 | if (strcmp (lhs->dwo_name, rhs->dwo_name) != 0) |
9102 | return 0; | |
9103 | if (lhs->comp_dir == NULL || rhs->comp_dir == NULL) | |
9104 | return lhs->comp_dir == rhs->comp_dir; | |
9105 | return strcmp (lhs->comp_dir, rhs->comp_dir) == 0; | |
3019eac3 DE |
9106 | } |
9107 | ||
9108 | /* Allocate a hash table for DWO files. */ | |
9109 | ||
9110 | static htab_t | |
9111 | allocate_dwo_file_hash_table (void) | |
9112 | { | |
9113 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
9114 | ||
9115 | return htab_create_alloc_ex (41, | |
9116 | hash_dwo_file, | |
9117 | eq_dwo_file, | |
9118 | NULL, | |
9119 | &objfile->objfile_obstack, | |
9120 | hashtab_obstack_allocate, | |
9121 | dummy_obstack_deallocate); | |
9122 | } | |
9123 | ||
80626a55 DE |
9124 | /* Lookup DWO file DWO_NAME. */ |
9125 | ||
9126 | static void ** | |
0ac5b59e | 9127 | lookup_dwo_file_slot (const char *dwo_name, const char *comp_dir) |
80626a55 DE |
9128 | { |
9129 | struct dwo_file find_entry; | |
9130 | void **slot; | |
9131 | ||
9132 | if (dwarf2_per_objfile->dwo_files == NULL) | |
9133 | dwarf2_per_objfile->dwo_files = allocate_dwo_file_hash_table (); | |
9134 | ||
9135 | memset (&find_entry, 0, sizeof (find_entry)); | |
0ac5b59e DE |
9136 | find_entry.dwo_name = dwo_name; |
9137 | find_entry.comp_dir = comp_dir; | |
80626a55 DE |
9138 | slot = htab_find_slot (dwarf2_per_objfile->dwo_files, &find_entry, INSERT); |
9139 | ||
9140 | return slot; | |
9141 | } | |
9142 | ||
3019eac3 DE |
9143 | static hashval_t |
9144 | hash_dwo_unit (const void *item) | |
9145 | { | |
9146 | const struct dwo_unit *dwo_unit = item; | |
9147 | ||
9148 | /* This drops the top 32 bits of the id, but is ok for a hash. */ | |
9149 | return dwo_unit->signature; | |
9150 | } | |
9151 | ||
9152 | static int | |
9153 | eq_dwo_unit (const void *item_lhs, const void *item_rhs) | |
9154 | { | |
9155 | const struct dwo_unit *lhs = item_lhs; | |
9156 | const struct dwo_unit *rhs = item_rhs; | |
9157 | ||
9158 | /* The signature is assumed to be unique within the DWO file. | |
9159 | So while object file CU dwo_id's always have the value zero, | |
9160 | that's OK, assuming each object file DWO file has only one CU, | |
9161 | and that's the rule for now. */ | |
9162 | return lhs->signature == rhs->signature; | |
9163 | } | |
9164 | ||
9165 | /* Allocate a hash table for DWO CUs,TUs. | |
9166 | There is one of these tables for each of CUs,TUs for each DWO file. */ | |
9167 | ||
9168 | static htab_t | |
9169 | allocate_dwo_unit_table (struct objfile *objfile) | |
9170 | { | |
9171 | /* Start out with a pretty small number. | |
9172 | Generally DWO files contain only one CU and maybe some TUs. */ | |
9173 | return htab_create_alloc_ex (3, | |
9174 | hash_dwo_unit, | |
9175 | eq_dwo_unit, | |
9176 | NULL, | |
9177 | &objfile->objfile_obstack, | |
9178 | hashtab_obstack_allocate, | |
9179 | dummy_obstack_deallocate); | |
9180 | } | |
9181 | ||
80626a55 | 9182 | /* Structure used to pass data to create_dwo_debug_info_hash_table_reader. */ |
3019eac3 | 9183 | |
19c3d4c9 | 9184 | struct create_dwo_cu_data |
3019eac3 DE |
9185 | { |
9186 | struct dwo_file *dwo_file; | |
19c3d4c9 | 9187 | struct dwo_unit dwo_unit; |
3019eac3 DE |
9188 | }; |
9189 | ||
19c3d4c9 | 9190 | /* die_reader_func for create_dwo_cu. */ |
3019eac3 DE |
9191 | |
9192 | static void | |
19c3d4c9 DE |
9193 | create_dwo_cu_reader (const struct die_reader_specs *reader, |
9194 | const gdb_byte *info_ptr, | |
9195 | struct die_info *comp_unit_die, | |
9196 | int has_children, | |
9197 | void *datap) | |
3019eac3 DE |
9198 | { |
9199 | struct dwarf2_cu *cu = reader->cu; | |
9200 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
9201 | sect_offset offset = cu->per_cu->offset; | |
8a0459fd | 9202 | struct dwarf2_section_info *section = cu->per_cu->section; |
19c3d4c9 | 9203 | struct create_dwo_cu_data *data = datap; |
3019eac3 | 9204 | struct dwo_file *dwo_file = data->dwo_file; |
19c3d4c9 | 9205 | struct dwo_unit *dwo_unit = &data->dwo_unit; |
3019eac3 | 9206 | struct attribute *attr; |
3019eac3 DE |
9207 | |
9208 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_id, cu); | |
9209 | if (attr == NULL) | |
9210 | { | |
19c3d4c9 DE |
9211 | complaint (&symfile_complaints, |
9212 | _("Dwarf Error: debug entry at offset 0x%x is missing" | |
9213 | " its dwo_id [in module %s]"), | |
9214 | offset.sect_off, dwo_file->dwo_name); | |
3019eac3 DE |
9215 | return; |
9216 | } | |
9217 | ||
3019eac3 DE |
9218 | dwo_unit->dwo_file = dwo_file; |
9219 | dwo_unit->signature = DW_UNSND (attr); | |
8a0459fd | 9220 | dwo_unit->section = section; |
3019eac3 DE |
9221 | dwo_unit->offset = offset; |
9222 | dwo_unit->length = cu->per_cu->length; | |
9223 | ||
09406207 | 9224 | if (dwarf2_read_debug) |
4031ecc5 DE |
9225 | fprintf_unfiltered (gdb_stdlog, " offset 0x%x, dwo_id %s\n", |
9226 | offset.sect_off, hex_string (dwo_unit->signature)); | |
3019eac3 DE |
9227 | } |
9228 | ||
19c3d4c9 DE |
9229 | /* Create the dwo_unit for the lone CU in DWO_FILE. |
9230 | Note: This function processes DWO files only, not DWP files. */ | |
3019eac3 | 9231 | |
19c3d4c9 DE |
9232 | static struct dwo_unit * |
9233 | create_dwo_cu (struct dwo_file *dwo_file) | |
3019eac3 DE |
9234 | { |
9235 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
9236 | struct dwarf2_section_info *section = &dwo_file->sections.info; | |
9237 | bfd *abfd; | |
9238 | htab_t cu_htab; | |
d521ce57 | 9239 | const gdb_byte *info_ptr, *end_ptr; |
19c3d4c9 DE |
9240 | struct create_dwo_cu_data create_dwo_cu_data; |
9241 | struct dwo_unit *dwo_unit; | |
3019eac3 DE |
9242 | |
9243 | dwarf2_read_section (objfile, section); | |
9244 | info_ptr = section->buffer; | |
9245 | ||
9246 | if (info_ptr == NULL) | |
9247 | return NULL; | |
9248 | ||
9249 | /* We can't set abfd until now because the section may be empty or | |
9250 | not present, in which case section->asection will be NULL. */ | |
a32a8923 | 9251 | abfd = get_section_bfd_owner (section); |
3019eac3 | 9252 | |
09406207 | 9253 | if (dwarf2_read_debug) |
19c3d4c9 DE |
9254 | { |
9255 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s:\n", | |
a32a8923 DE |
9256 | get_section_name (section), |
9257 | get_section_file_name (section)); | |
19c3d4c9 | 9258 | } |
3019eac3 | 9259 | |
19c3d4c9 DE |
9260 | create_dwo_cu_data.dwo_file = dwo_file; |
9261 | dwo_unit = NULL; | |
3019eac3 DE |
9262 | |
9263 | end_ptr = info_ptr + section->size; | |
9264 | while (info_ptr < end_ptr) | |
9265 | { | |
9266 | struct dwarf2_per_cu_data per_cu; | |
9267 | ||
19c3d4c9 DE |
9268 | memset (&create_dwo_cu_data.dwo_unit, 0, |
9269 | sizeof (create_dwo_cu_data.dwo_unit)); | |
3019eac3 DE |
9270 | memset (&per_cu, 0, sizeof (per_cu)); |
9271 | per_cu.objfile = objfile; | |
9272 | per_cu.is_debug_types = 0; | |
9273 | per_cu.offset.sect_off = info_ptr - section->buffer; | |
8a0459fd | 9274 | per_cu.section = section; |
3019eac3 DE |
9275 | |
9276 | init_cutu_and_read_dies_no_follow (&per_cu, | |
9277 | &dwo_file->sections.abbrev, | |
9278 | dwo_file, | |
19c3d4c9 DE |
9279 | create_dwo_cu_reader, |
9280 | &create_dwo_cu_data); | |
9281 | ||
9282 | if (create_dwo_cu_data.dwo_unit.dwo_file != NULL) | |
9283 | { | |
9284 | /* If we've already found one, complain. We only support one | |
9285 | because having more than one requires hacking the dwo_name of | |
9286 | each to match, which is highly unlikely to happen. */ | |
9287 | if (dwo_unit != NULL) | |
9288 | { | |
9289 | complaint (&symfile_complaints, | |
9290 | _("Multiple CUs in DWO file %s [in module %s]"), | |
4262abfb | 9291 | dwo_file->dwo_name, objfile_name (objfile)); |
19c3d4c9 DE |
9292 | break; |
9293 | } | |
9294 | ||
9295 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); | |
9296 | *dwo_unit = create_dwo_cu_data.dwo_unit; | |
9297 | } | |
3019eac3 DE |
9298 | |
9299 | info_ptr += per_cu.length; | |
9300 | } | |
9301 | ||
19c3d4c9 | 9302 | return dwo_unit; |
3019eac3 DE |
9303 | } |
9304 | ||
80626a55 DE |
9305 | /* DWP file .debug_{cu,tu}_index section format: |
9306 | [ref: http://gcc.gnu.org/wiki/DebugFissionDWP] | |
9307 | ||
d2415c6c DE |
9308 | DWP Version 1: |
9309 | ||
80626a55 DE |
9310 | Both index sections have the same format, and serve to map a 64-bit |
9311 | signature to a set of section numbers. Each section begins with a header, | |
9312 | followed by a hash table of 64-bit signatures, a parallel table of 32-bit | |
9313 | indexes, and a pool of 32-bit section numbers. The index sections will be | |
9314 | aligned at 8-byte boundaries in the file. | |
9315 | ||
d2415c6c DE |
9316 | The index section header consists of: |
9317 | ||
9318 | V, 32 bit version number | |
9319 | -, 32 bits unused | |
9320 | N, 32 bit number of compilation units or type units in the index | |
9321 | M, 32 bit number of slots in the hash table | |
80626a55 | 9322 | |
d2415c6c | 9323 | Numbers are recorded using the byte order of the application binary. |
80626a55 | 9324 | |
d2415c6c DE |
9325 | The hash table begins at offset 16 in the section, and consists of an array |
9326 | of M 64-bit slots. Each slot contains a 64-bit signature (using the byte | |
9327 | order of the application binary). Unused slots in the hash table are 0. | |
9328 | (We rely on the extreme unlikeliness of a signature being exactly 0.) | |
80626a55 | 9329 | |
d2415c6c DE |
9330 | The parallel table begins immediately after the hash table |
9331 | (at offset 16 + 8 * M from the beginning of the section), and consists of an | |
9332 | array of 32-bit indexes (using the byte order of the application binary), | |
9333 | corresponding 1-1 with slots in the hash table. Each entry in the parallel | |
9334 | table contains a 32-bit index into the pool of section numbers. For unused | |
9335 | hash table slots, the corresponding entry in the parallel table will be 0. | |
80626a55 | 9336 | |
73869dc2 DE |
9337 | The pool of section numbers begins immediately following the hash table |
9338 | (at offset 16 + 12 * M from the beginning of the section). The pool of | |
9339 | section numbers consists of an array of 32-bit words (using the byte order | |
9340 | of the application binary). Each item in the array is indexed starting | |
9341 | from 0. The hash table entry provides the index of the first section | |
9342 | number in the set. Additional section numbers in the set follow, and the | |
9343 | set is terminated by a 0 entry (section number 0 is not used in ELF). | |
9344 | ||
9345 | In each set of section numbers, the .debug_info.dwo or .debug_types.dwo | |
9346 | section must be the first entry in the set, and the .debug_abbrev.dwo must | |
9347 | be the second entry. Other members of the set may follow in any order. | |
9348 | ||
9349 | --- | |
9350 | ||
9351 | DWP Version 2: | |
9352 | ||
9353 | DWP Version 2 combines all the .debug_info, etc. sections into one, | |
9354 | and the entries in the index tables are now offsets into these sections. | |
9355 | CU offsets begin at 0. TU offsets begin at the size of the .debug_info | |
9356 | section. | |
9357 | ||
9358 | Index Section Contents: | |
9359 | Header | |
9360 | Hash Table of Signatures dwp_hash_table.hash_table | |
9361 | Parallel Table of Indices dwp_hash_table.unit_table | |
9362 | Table of Section Offsets dwp_hash_table.v2.{section_ids,offsets} | |
9363 | Table of Section Sizes dwp_hash_table.v2.sizes | |
9364 | ||
9365 | The index section header consists of: | |
9366 | ||
9367 | V, 32 bit version number | |
9368 | L, 32 bit number of columns in the table of section offsets | |
9369 | N, 32 bit number of compilation units or type units in the index | |
9370 | M, 32 bit number of slots in the hash table | |
9371 | ||
9372 | Numbers are recorded using the byte order of the application binary. | |
9373 | ||
9374 | The hash table has the same format as version 1. | |
9375 | The parallel table of indices has the same format as version 1, | |
9376 | except that the entries are origin-1 indices into the table of sections | |
9377 | offsets and the table of section sizes. | |
9378 | ||
9379 | The table of offsets begins immediately following the parallel table | |
9380 | (at offset 16 + 12 * M from the beginning of the section). The table is | |
9381 | a two-dimensional array of 32-bit words (using the byte order of the | |
9382 | application binary), with L columns and N+1 rows, in row-major order. | |
9383 | Each row in the array is indexed starting from 0. The first row provides | |
9384 | a key to the remaining rows: each column in this row provides an identifier | |
9385 | for a debug section, and the offsets in the same column of subsequent rows | |
9386 | refer to that section. The section identifiers are: | |
9387 | ||
9388 | DW_SECT_INFO 1 .debug_info.dwo | |
9389 | DW_SECT_TYPES 2 .debug_types.dwo | |
9390 | DW_SECT_ABBREV 3 .debug_abbrev.dwo | |
9391 | DW_SECT_LINE 4 .debug_line.dwo | |
9392 | DW_SECT_LOC 5 .debug_loc.dwo | |
9393 | DW_SECT_STR_OFFSETS 6 .debug_str_offsets.dwo | |
9394 | DW_SECT_MACINFO 7 .debug_macinfo.dwo | |
9395 | DW_SECT_MACRO 8 .debug_macro.dwo | |
9396 | ||
9397 | The offsets provided by the CU and TU index sections are the base offsets | |
9398 | for the contributions made by each CU or TU to the corresponding section | |
9399 | in the package file. Each CU and TU header contains an abbrev_offset | |
9400 | field, used to find the abbreviations table for that CU or TU within the | |
9401 | contribution to the .debug_abbrev.dwo section for that CU or TU, and should | |
9402 | be interpreted as relative to the base offset given in the index section. | |
9403 | Likewise, offsets into .debug_line.dwo from DW_AT_stmt_list attributes | |
9404 | should be interpreted as relative to the base offset for .debug_line.dwo, | |
9405 | and offsets into other debug sections obtained from DWARF attributes should | |
9406 | also be interpreted as relative to the corresponding base offset. | |
9407 | ||
9408 | The table of sizes begins immediately following the table of offsets. | |
9409 | Like the table of offsets, it is a two-dimensional array of 32-bit words, | |
9410 | with L columns and N rows, in row-major order. Each row in the array is | |
9411 | indexed starting from 1 (row 0 is shared by the two tables). | |
9412 | ||
9413 | --- | |
9414 | ||
9415 | Hash table lookup is handled the same in version 1 and 2: | |
9416 | ||
9417 | We assume that N and M will not exceed 2^32 - 1. | |
9418 | The size of the hash table, M, must be 2^k such that 2^k > 3*N/2. | |
9419 | ||
d2415c6c DE |
9420 | Given a 64-bit compilation unit signature or a type signature S, an entry |
9421 | in the hash table is located as follows: | |
80626a55 | 9422 | |
d2415c6c DE |
9423 | 1) Calculate a primary hash H = S & MASK(k), where MASK(k) is a mask with |
9424 | the low-order k bits all set to 1. | |
80626a55 | 9425 | |
d2415c6c | 9426 | 2) Calculate a secondary hash H' = (((S >> 32) & MASK(k)) | 1). |
80626a55 | 9427 | |
d2415c6c DE |
9428 | 3) If the hash table entry at index H matches the signature, use that |
9429 | entry. If the hash table entry at index H is unused (all zeroes), | |
9430 | terminate the search: the signature is not present in the table. | |
80626a55 | 9431 | |
d2415c6c | 9432 | 4) Let H = (H + H') modulo M. Repeat at Step 3. |
80626a55 | 9433 | |
d2415c6c | 9434 | Because M > N and H' and M are relatively prime, the search is guaranteed |
73869dc2 | 9435 | to stop at an unused slot or find the match. */ |
80626a55 DE |
9436 | |
9437 | /* Create a hash table to map DWO IDs to their CU/TU entry in | |
9438 | .debug_{info,types}.dwo in DWP_FILE. | |
9439 | Returns NULL if there isn't one. | |
9440 | Note: This function processes DWP files only, not DWO files. */ | |
9441 | ||
9442 | static struct dwp_hash_table * | |
9443 | create_dwp_hash_table (struct dwp_file *dwp_file, int is_debug_types) | |
9444 | { | |
9445 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
9446 | bfd *dbfd = dwp_file->dbfd; | |
948f8e3d | 9447 | const gdb_byte *index_ptr, *index_end; |
80626a55 | 9448 | struct dwarf2_section_info *index; |
73869dc2 | 9449 | uint32_t version, nr_columns, nr_units, nr_slots; |
80626a55 DE |
9450 | struct dwp_hash_table *htab; |
9451 | ||
9452 | if (is_debug_types) | |
9453 | index = &dwp_file->sections.tu_index; | |
9454 | else | |
9455 | index = &dwp_file->sections.cu_index; | |
9456 | ||
9457 | if (dwarf2_section_empty_p (index)) | |
9458 | return NULL; | |
9459 | dwarf2_read_section (objfile, index); | |
9460 | ||
9461 | index_ptr = index->buffer; | |
9462 | index_end = index_ptr + index->size; | |
9463 | ||
9464 | version = read_4_bytes (dbfd, index_ptr); | |
73869dc2 DE |
9465 | index_ptr += 4; |
9466 | if (version == 2) | |
9467 | nr_columns = read_4_bytes (dbfd, index_ptr); | |
9468 | else | |
9469 | nr_columns = 0; | |
9470 | index_ptr += 4; | |
80626a55 DE |
9471 | nr_units = read_4_bytes (dbfd, index_ptr); |
9472 | index_ptr += 4; | |
9473 | nr_slots = read_4_bytes (dbfd, index_ptr); | |
9474 | index_ptr += 4; | |
9475 | ||
73869dc2 | 9476 | if (version != 1 && version != 2) |
80626a55 | 9477 | { |
21aa081e | 9478 | error (_("Dwarf Error: unsupported DWP file version (%s)" |
80626a55 | 9479 | " [in module %s]"), |
21aa081e | 9480 | pulongest (version), dwp_file->name); |
80626a55 DE |
9481 | } |
9482 | if (nr_slots != (nr_slots & -nr_slots)) | |
9483 | { | |
21aa081e | 9484 | error (_("Dwarf Error: number of slots in DWP hash table (%s)" |
80626a55 | 9485 | " is not power of 2 [in module %s]"), |
21aa081e | 9486 | pulongest (nr_slots), dwp_file->name); |
80626a55 DE |
9487 | } |
9488 | ||
9489 | htab = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwp_hash_table); | |
73869dc2 DE |
9490 | htab->version = version; |
9491 | htab->nr_columns = nr_columns; | |
80626a55 DE |
9492 | htab->nr_units = nr_units; |
9493 | htab->nr_slots = nr_slots; | |
9494 | htab->hash_table = index_ptr; | |
9495 | htab->unit_table = htab->hash_table + sizeof (uint64_t) * nr_slots; | |
73869dc2 DE |
9496 | |
9497 | /* Exit early if the table is empty. */ | |
9498 | if (nr_slots == 0 || nr_units == 0 | |
9499 | || (version == 2 && nr_columns == 0)) | |
9500 | { | |
9501 | /* All must be zero. */ | |
9502 | if (nr_slots != 0 || nr_units != 0 | |
9503 | || (version == 2 && nr_columns != 0)) | |
9504 | { | |
9505 | complaint (&symfile_complaints, | |
9506 | _("Empty DWP but nr_slots,nr_units,nr_columns not" | |
9507 | " all zero [in modules %s]"), | |
9508 | dwp_file->name); | |
9509 | } | |
9510 | return htab; | |
9511 | } | |
9512 | ||
9513 | if (version == 1) | |
9514 | { | |
9515 | htab->section_pool.v1.indices = | |
9516 | htab->unit_table + sizeof (uint32_t) * nr_slots; | |
9517 | /* It's harder to decide whether the section is too small in v1. | |
9518 | V1 is deprecated anyway so we punt. */ | |
9519 | } | |
9520 | else | |
9521 | { | |
9522 | const gdb_byte *ids_ptr = htab->unit_table + sizeof (uint32_t) * nr_slots; | |
9523 | int *ids = htab->section_pool.v2.section_ids; | |
9524 | /* Reverse map for error checking. */ | |
9525 | int ids_seen[DW_SECT_MAX + 1]; | |
9526 | int i; | |
9527 | ||
9528 | if (nr_columns < 2) | |
9529 | { | |
9530 | error (_("Dwarf Error: bad DWP hash table, too few columns" | |
9531 | " in section table [in module %s]"), | |
9532 | dwp_file->name); | |
9533 | } | |
9534 | if (nr_columns > MAX_NR_V2_DWO_SECTIONS) | |
9535 | { | |
9536 | error (_("Dwarf Error: bad DWP hash table, too many columns" | |
9537 | " in section table [in module %s]"), | |
9538 | dwp_file->name); | |
9539 | } | |
9540 | memset (ids, 255, (DW_SECT_MAX + 1) * sizeof (int32_t)); | |
9541 | memset (ids_seen, 255, (DW_SECT_MAX + 1) * sizeof (int32_t)); | |
9542 | for (i = 0; i < nr_columns; ++i) | |
9543 | { | |
9544 | int id = read_4_bytes (dbfd, ids_ptr + i * sizeof (uint32_t)); | |
9545 | ||
9546 | if (id < DW_SECT_MIN || id > DW_SECT_MAX) | |
9547 | { | |
9548 | error (_("Dwarf Error: bad DWP hash table, bad section id %d" | |
9549 | " in section table [in module %s]"), | |
9550 | id, dwp_file->name); | |
9551 | } | |
9552 | if (ids_seen[id] != -1) | |
9553 | { | |
9554 | error (_("Dwarf Error: bad DWP hash table, duplicate section" | |
9555 | " id %d in section table [in module %s]"), | |
9556 | id, dwp_file->name); | |
9557 | } | |
9558 | ids_seen[id] = i; | |
9559 | ids[i] = id; | |
9560 | } | |
9561 | /* Must have exactly one info or types section. */ | |
9562 | if (((ids_seen[DW_SECT_INFO] != -1) | |
9563 | + (ids_seen[DW_SECT_TYPES] != -1)) | |
9564 | != 1) | |
9565 | { | |
9566 | error (_("Dwarf Error: bad DWP hash table, missing/duplicate" | |
9567 | " DWO info/types section [in module %s]"), | |
9568 | dwp_file->name); | |
9569 | } | |
9570 | /* Must have an abbrev section. */ | |
9571 | if (ids_seen[DW_SECT_ABBREV] == -1) | |
9572 | { | |
9573 | error (_("Dwarf Error: bad DWP hash table, missing DWO abbrev" | |
9574 | " section [in module %s]"), | |
9575 | dwp_file->name); | |
9576 | } | |
9577 | htab->section_pool.v2.offsets = ids_ptr + sizeof (uint32_t) * nr_columns; | |
9578 | htab->section_pool.v2.sizes = | |
9579 | htab->section_pool.v2.offsets + (sizeof (uint32_t) | |
9580 | * nr_units * nr_columns); | |
9581 | if ((htab->section_pool.v2.sizes + (sizeof (uint32_t) | |
9582 | * nr_units * nr_columns)) | |
9583 | > index_end) | |
9584 | { | |
9585 | error (_("Dwarf Error: DWP index section is corrupt (too small)" | |
9586 | " [in module %s]"), | |
9587 | dwp_file->name); | |
9588 | } | |
9589 | } | |
80626a55 DE |
9590 | |
9591 | return htab; | |
9592 | } | |
9593 | ||
9594 | /* Update SECTIONS with the data from SECTP. | |
9595 | ||
9596 | This function is like the other "locate" section routines that are | |
9597 | passed to bfd_map_over_sections, but in this context the sections to | |
73869dc2 | 9598 | read comes from the DWP V1 hash table, not the full ELF section table. |
80626a55 DE |
9599 | |
9600 | The result is non-zero for success, or zero if an error was found. */ | |
9601 | ||
9602 | static int | |
73869dc2 DE |
9603 | locate_v1_virtual_dwo_sections (asection *sectp, |
9604 | struct virtual_v1_dwo_sections *sections) | |
80626a55 DE |
9605 | { |
9606 | const struct dwop_section_names *names = &dwop_section_names; | |
9607 | ||
9608 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
9609 | { | |
9610 | /* There can be only one. */ | |
73869dc2 | 9611 | if (sections->abbrev.s.asection != NULL) |
80626a55 | 9612 | return 0; |
73869dc2 | 9613 | sections->abbrev.s.asection = sectp; |
80626a55 DE |
9614 | sections->abbrev.size = bfd_get_section_size (sectp); |
9615 | } | |
9616 | else if (section_is_p (sectp->name, &names->info_dwo) | |
9617 | || section_is_p (sectp->name, &names->types_dwo)) | |
9618 | { | |
9619 | /* There can be only one. */ | |
73869dc2 | 9620 | if (sections->info_or_types.s.asection != NULL) |
80626a55 | 9621 | return 0; |
73869dc2 | 9622 | sections->info_or_types.s.asection = sectp; |
80626a55 DE |
9623 | sections->info_or_types.size = bfd_get_section_size (sectp); |
9624 | } | |
9625 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
9626 | { | |
9627 | /* There can be only one. */ | |
73869dc2 | 9628 | if (sections->line.s.asection != NULL) |
80626a55 | 9629 | return 0; |
73869dc2 | 9630 | sections->line.s.asection = sectp; |
80626a55 DE |
9631 | sections->line.size = bfd_get_section_size (sectp); |
9632 | } | |
9633 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
9634 | { | |
9635 | /* There can be only one. */ | |
73869dc2 | 9636 | if (sections->loc.s.asection != NULL) |
80626a55 | 9637 | return 0; |
73869dc2 | 9638 | sections->loc.s.asection = sectp; |
80626a55 DE |
9639 | sections->loc.size = bfd_get_section_size (sectp); |
9640 | } | |
9641 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
9642 | { | |
9643 | /* There can be only one. */ | |
73869dc2 | 9644 | if (sections->macinfo.s.asection != NULL) |
80626a55 | 9645 | return 0; |
73869dc2 | 9646 | sections->macinfo.s.asection = sectp; |
80626a55 DE |
9647 | sections->macinfo.size = bfd_get_section_size (sectp); |
9648 | } | |
9649 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
9650 | { | |
9651 | /* There can be only one. */ | |
73869dc2 | 9652 | if (sections->macro.s.asection != NULL) |
80626a55 | 9653 | return 0; |
73869dc2 | 9654 | sections->macro.s.asection = sectp; |
80626a55 DE |
9655 | sections->macro.size = bfd_get_section_size (sectp); |
9656 | } | |
9657 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
9658 | { | |
9659 | /* There can be only one. */ | |
73869dc2 | 9660 | if (sections->str_offsets.s.asection != NULL) |
80626a55 | 9661 | return 0; |
73869dc2 | 9662 | sections->str_offsets.s.asection = sectp; |
80626a55 DE |
9663 | sections->str_offsets.size = bfd_get_section_size (sectp); |
9664 | } | |
9665 | else | |
9666 | { | |
9667 | /* No other kind of section is valid. */ | |
9668 | return 0; | |
9669 | } | |
9670 | ||
9671 | return 1; | |
9672 | } | |
9673 | ||
73869dc2 DE |
9674 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. |
9675 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
9676 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
9677 | This is for DWP version 1 files. */ | |
80626a55 DE |
9678 | |
9679 | static struct dwo_unit * | |
73869dc2 DE |
9680 | create_dwo_unit_in_dwp_v1 (struct dwp_file *dwp_file, |
9681 | uint32_t unit_index, | |
9682 | const char *comp_dir, | |
9683 | ULONGEST signature, int is_debug_types) | |
80626a55 DE |
9684 | { |
9685 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
73869dc2 DE |
9686 | const struct dwp_hash_table *dwp_htab = |
9687 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
80626a55 DE |
9688 | bfd *dbfd = dwp_file->dbfd; |
9689 | const char *kind = is_debug_types ? "TU" : "CU"; | |
9690 | struct dwo_file *dwo_file; | |
9691 | struct dwo_unit *dwo_unit; | |
73869dc2 | 9692 | struct virtual_v1_dwo_sections sections; |
80626a55 DE |
9693 | void **dwo_file_slot; |
9694 | char *virtual_dwo_name; | |
9695 | struct dwarf2_section_info *cutu; | |
9696 | struct cleanup *cleanups; | |
9697 | int i; | |
9698 | ||
73869dc2 DE |
9699 | gdb_assert (dwp_file->version == 1); |
9700 | ||
80626a55 DE |
9701 | if (dwarf2_read_debug) |
9702 | { | |
73869dc2 | 9703 | fprintf_unfiltered (gdb_stdlog, "Reading %s %s/%s in DWP V1 file: %s\n", |
80626a55 | 9704 | kind, |
73869dc2 | 9705 | pulongest (unit_index), hex_string (signature), |
80626a55 DE |
9706 | dwp_file->name); |
9707 | } | |
9708 | ||
19ac8c2e | 9709 | /* Fetch the sections of this DWO unit. |
80626a55 DE |
9710 | Put a limit on the number of sections we look for so that bad data |
9711 | doesn't cause us to loop forever. */ | |
9712 | ||
73869dc2 | 9713 | #define MAX_NR_V1_DWO_SECTIONS \ |
80626a55 DE |
9714 | (1 /* .debug_info or .debug_types */ \ |
9715 | + 1 /* .debug_abbrev */ \ | |
9716 | + 1 /* .debug_line */ \ | |
9717 | + 1 /* .debug_loc */ \ | |
9718 | + 1 /* .debug_str_offsets */ \ | |
19ac8c2e | 9719 | + 1 /* .debug_macro or .debug_macinfo */ \ |
80626a55 DE |
9720 | + 1 /* trailing zero */) |
9721 | ||
9722 | memset (§ions, 0, sizeof (sections)); | |
9723 | cleanups = make_cleanup (null_cleanup, 0); | |
9724 | ||
73869dc2 | 9725 | for (i = 0; i < MAX_NR_V1_DWO_SECTIONS; ++i) |
80626a55 DE |
9726 | { |
9727 | asection *sectp; | |
9728 | uint32_t section_nr = | |
9729 | read_4_bytes (dbfd, | |
73869dc2 DE |
9730 | dwp_htab->section_pool.v1.indices |
9731 | + (unit_index + i) * sizeof (uint32_t)); | |
80626a55 DE |
9732 | |
9733 | if (section_nr == 0) | |
9734 | break; | |
9735 | if (section_nr >= dwp_file->num_sections) | |
9736 | { | |
9737 | error (_("Dwarf Error: bad DWP hash table, section number too large" | |
9738 | " [in module %s]"), | |
9739 | dwp_file->name); | |
9740 | } | |
9741 | ||
9742 | sectp = dwp_file->elf_sections[section_nr]; | |
73869dc2 | 9743 | if (! locate_v1_virtual_dwo_sections (sectp, §ions)) |
80626a55 DE |
9744 | { |
9745 | error (_("Dwarf Error: bad DWP hash table, invalid section found" | |
9746 | " [in module %s]"), | |
9747 | dwp_file->name); | |
9748 | } | |
9749 | } | |
9750 | ||
9751 | if (i < 2 | |
a32a8923 DE |
9752 | || dwarf2_section_empty_p (§ions.info_or_types) |
9753 | || dwarf2_section_empty_p (§ions.abbrev)) | |
80626a55 DE |
9754 | { |
9755 | error (_("Dwarf Error: bad DWP hash table, missing DWO sections" | |
9756 | " [in module %s]"), | |
9757 | dwp_file->name); | |
9758 | } | |
73869dc2 | 9759 | if (i == MAX_NR_V1_DWO_SECTIONS) |
80626a55 DE |
9760 | { |
9761 | error (_("Dwarf Error: bad DWP hash table, too many DWO sections" | |
9762 | " [in module %s]"), | |
9763 | dwp_file->name); | |
9764 | } | |
9765 | ||
9766 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
9767 | have dwo_unit "live" in that. At least for now. | |
9768 | ||
9769 | The DWP file can be made up of a random collection of CUs and TUs. | |
c766f7ec | 9770 | However, for each CU + set of TUs that came from the same original DWO |
57d63ce2 DE |
9771 | file, we can combine them back into a virtual DWO file to save space |
9772 | (fewer struct dwo_file objects to allocate). Remember that for really | |
80626a55 DE |
9773 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ |
9774 | ||
2792b94d PM |
9775 | virtual_dwo_name = |
9776 | xstrprintf ("virtual-dwo/%d-%d-%d-%d", | |
a32a8923 DE |
9777 | get_section_id (§ions.abbrev), |
9778 | get_section_id (§ions.line), | |
9779 | get_section_id (§ions.loc), | |
9780 | get_section_id (§ions.str_offsets)); | |
80626a55 DE |
9781 | make_cleanup (xfree, virtual_dwo_name); |
9782 | /* Can we use an existing virtual DWO file? */ | |
0ac5b59e | 9783 | dwo_file_slot = lookup_dwo_file_slot (virtual_dwo_name, comp_dir); |
80626a55 DE |
9784 | /* Create one if necessary. */ |
9785 | if (*dwo_file_slot == NULL) | |
9786 | { | |
9787 | if (dwarf2_read_debug) | |
9788 | { | |
9789 | fprintf_unfiltered (gdb_stdlog, "Creating virtual DWO: %s\n", | |
9790 | virtual_dwo_name); | |
9791 | } | |
9792 | dwo_file = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_file); | |
0ac5b59e DE |
9793 | dwo_file->dwo_name = obstack_copy0 (&objfile->objfile_obstack, |
9794 | virtual_dwo_name, | |
9795 | strlen (virtual_dwo_name)); | |
9796 | dwo_file->comp_dir = comp_dir; | |
80626a55 DE |
9797 | dwo_file->sections.abbrev = sections.abbrev; |
9798 | dwo_file->sections.line = sections.line; | |
9799 | dwo_file->sections.loc = sections.loc; | |
9800 | dwo_file->sections.macinfo = sections.macinfo; | |
9801 | dwo_file->sections.macro = sections.macro; | |
9802 | dwo_file->sections.str_offsets = sections.str_offsets; | |
9803 | /* The "str" section is global to the entire DWP file. */ | |
9804 | dwo_file->sections.str = dwp_file->sections.str; | |
57d63ce2 | 9805 | /* The info or types section is assigned below to dwo_unit, |
80626a55 DE |
9806 | there's no need to record it in dwo_file. |
9807 | Also, we can't simply record type sections in dwo_file because | |
9808 | we record a pointer into the vector in dwo_unit. As we collect more | |
9809 | types we'll grow the vector and eventually have to reallocate space | |
57d63ce2 DE |
9810 | for it, invalidating all copies of pointers into the previous |
9811 | contents. */ | |
80626a55 DE |
9812 | *dwo_file_slot = dwo_file; |
9813 | } | |
9814 | else | |
9815 | { | |
9816 | if (dwarf2_read_debug) | |
9817 | { | |
9818 | fprintf_unfiltered (gdb_stdlog, "Using existing virtual DWO: %s\n", | |
9819 | virtual_dwo_name); | |
9820 | } | |
9821 | dwo_file = *dwo_file_slot; | |
9822 | } | |
9823 | do_cleanups (cleanups); | |
9824 | ||
9825 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); | |
9826 | dwo_unit->dwo_file = dwo_file; | |
9827 | dwo_unit->signature = signature; | |
8a0459fd DE |
9828 | dwo_unit->section = obstack_alloc (&objfile->objfile_obstack, |
9829 | sizeof (struct dwarf2_section_info)); | |
9830 | *dwo_unit->section = sections.info_or_types; | |
57d63ce2 | 9831 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ |
80626a55 DE |
9832 | |
9833 | return dwo_unit; | |
9834 | } | |
9835 | ||
73869dc2 DE |
9836 | /* Subroutine of create_dwo_unit_in_dwp_v2 to simplify it. |
9837 | Given a pointer to the containing section SECTION, and OFFSET,SIZE of the | |
9838 | piece within that section used by a TU/CU, return a virtual section | |
9839 | of just that piece. */ | |
9840 | ||
9841 | static struct dwarf2_section_info | |
9842 | create_dwp_v2_section (struct dwarf2_section_info *section, | |
9843 | bfd_size_type offset, bfd_size_type size) | |
9844 | { | |
9845 | struct dwarf2_section_info result; | |
9846 | asection *sectp; | |
9847 | ||
9848 | gdb_assert (section != NULL); | |
9849 | gdb_assert (!section->is_virtual); | |
9850 | ||
9851 | memset (&result, 0, sizeof (result)); | |
9852 | result.s.containing_section = section; | |
9853 | result.is_virtual = 1; | |
9854 | ||
9855 | if (size == 0) | |
9856 | return result; | |
9857 | ||
9858 | sectp = get_section_bfd_section (section); | |
9859 | ||
9860 | /* Flag an error if the piece denoted by OFFSET,SIZE is outside the | |
9861 | bounds of the real section. This is a pretty-rare event, so just | |
9862 | flag an error (easier) instead of a warning and trying to cope. */ | |
9863 | if (sectp == NULL | |
9864 | || offset + size > bfd_get_section_size (sectp)) | |
9865 | { | |
9866 | bfd *abfd = sectp->owner; | |
9867 | ||
9868 | error (_("Dwarf Error: Bad DWP V2 section info, doesn't fit" | |
9869 | " in section %s [in module %s]"), | |
9870 | sectp ? bfd_section_name (abfd, sectp) : "<unknown>", | |
9871 | objfile_name (dwarf2_per_objfile->objfile)); | |
9872 | } | |
9873 | ||
9874 | result.virtual_offset = offset; | |
9875 | result.size = size; | |
9876 | return result; | |
9877 | } | |
9878 | ||
9879 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. | |
9880 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
9881 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
9882 | This is for DWP version 2 files. */ | |
9883 | ||
9884 | static struct dwo_unit * | |
9885 | create_dwo_unit_in_dwp_v2 (struct dwp_file *dwp_file, | |
9886 | uint32_t unit_index, | |
9887 | const char *comp_dir, | |
9888 | ULONGEST signature, int is_debug_types) | |
9889 | { | |
9890 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
9891 | const struct dwp_hash_table *dwp_htab = | |
9892 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
9893 | bfd *dbfd = dwp_file->dbfd; | |
9894 | const char *kind = is_debug_types ? "TU" : "CU"; | |
9895 | struct dwo_file *dwo_file; | |
9896 | struct dwo_unit *dwo_unit; | |
9897 | struct virtual_v2_dwo_sections sections; | |
9898 | void **dwo_file_slot; | |
9899 | char *virtual_dwo_name; | |
9900 | struct dwarf2_section_info *cutu; | |
9901 | struct cleanup *cleanups; | |
9902 | int i; | |
9903 | ||
9904 | gdb_assert (dwp_file->version == 2); | |
9905 | ||
9906 | if (dwarf2_read_debug) | |
9907 | { | |
9908 | fprintf_unfiltered (gdb_stdlog, "Reading %s %s/%s in DWP V2 file: %s\n", | |
9909 | kind, | |
9910 | pulongest (unit_index), hex_string (signature), | |
9911 | dwp_file->name); | |
9912 | } | |
9913 | ||
9914 | /* Fetch the section offsets of this DWO unit. */ | |
9915 | ||
9916 | memset (§ions, 0, sizeof (sections)); | |
9917 | cleanups = make_cleanup (null_cleanup, 0); | |
9918 | ||
9919 | for (i = 0; i < dwp_htab->nr_columns; ++i) | |
9920 | { | |
9921 | uint32_t offset = read_4_bytes (dbfd, | |
9922 | dwp_htab->section_pool.v2.offsets | |
9923 | + (((unit_index - 1) * dwp_htab->nr_columns | |
9924 | + i) | |
9925 | * sizeof (uint32_t))); | |
9926 | uint32_t size = read_4_bytes (dbfd, | |
9927 | dwp_htab->section_pool.v2.sizes | |
9928 | + (((unit_index - 1) * dwp_htab->nr_columns | |
9929 | + i) | |
9930 | * sizeof (uint32_t))); | |
9931 | ||
9932 | switch (dwp_htab->section_pool.v2.section_ids[i]) | |
9933 | { | |
9934 | case DW_SECT_INFO: | |
9935 | case DW_SECT_TYPES: | |
9936 | sections.info_or_types_offset = offset; | |
9937 | sections.info_or_types_size = size; | |
9938 | break; | |
9939 | case DW_SECT_ABBREV: | |
9940 | sections.abbrev_offset = offset; | |
9941 | sections.abbrev_size = size; | |
9942 | break; | |
9943 | case DW_SECT_LINE: | |
9944 | sections.line_offset = offset; | |
9945 | sections.line_size = size; | |
9946 | break; | |
9947 | case DW_SECT_LOC: | |
9948 | sections.loc_offset = offset; | |
9949 | sections.loc_size = size; | |
9950 | break; | |
9951 | case DW_SECT_STR_OFFSETS: | |
9952 | sections.str_offsets_offset = offset; | |
9953 | sections.str_offsets_size = size; | |
9954 | break; | |
9955 | case DW_SECT_MACINFO: | |
9956 | sections.macinfo_offset = offset; | |
9957 | sections.macinfo_size = size; | |
9958 | break; | |
9959 | case DW_SECT_MACRO: | |
9960 | sections.macro_offset = offset; | |
9961 | sections.macro_size = size; | |
9962 | break; | |
9963 | } | |
9964 | } | |
9965 | ||
9966 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
9967 | have dwo_unit "live" in that. At least for now. | |
9968 | ||
9969 | The DWP file can be made up of a random collection of CUs and TUs. | |
9970 | However, for each CU + set of TUs that came from the same original DWO | |
9971 | file, we can combine them back into a virtual DWO file to save space | |
9972 | (fewer struct dwo_file objects to allocate). Remember that for really | |
9973 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ | |
9974 | ||
9975 | virtual_dwo_name = | |
9976 | xstrprintf ("virtual-dwo/%ld-%ld-%ld-%ld", | |
9977 | (long) (sections.abbrev_size ? sections.abbrev_offset : 0), | |
9978 | (long) (sections.line_size ? sections.line_offset : 0), | |
9979 | (long) (sections.loc_size ? sections.loc_offset : 0), | |
9980 | (long) (sections.str_offsets_size | |
9981 | ? sections.str_offsets_offset : 0)); | |
9982 | make_cleanup (xfree, virtual_dwo_name); | |
9983 | /* Can we use an existing virtual DWO file? */ | |
9984 | dwo_file_slot = lookup_dwo_file_slot (virtual_dwo_name, comp_dir); | |
9985 | /* Create one if necessary. */ | |
9986 | if (*dwo_file_slot == NULL) | |
9987 | { | |
9988 | if (dwarf2_read_debug) | |
9989 | { | |
9990 | fprintf_unfiltered (gdb_stdlog, "Creating virtual DWO: %s\n", | |
9991 | virtual_dwo_name); | |
9992 | } | |
9993 | dwo_file = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_file); | |
9994 | dwo_file->dwo_name = obstack_copy0 (&objfile->objfile_obstack, | |
9995 | virtual_dwo_name, | |
9996 | strlen (virtual_dwo_name)); | |
9997 | dwo_file->comp_dir = comp_dir; | |
9998 | dwo_file->sections.abbrev = | |
9999 | create_dwp_v2_section (&dwp_file->sections.abbrev, | |
10000 | sections.abbrev_offset, sections.abbrev_size); | |
10001 | dwo_file->sections.line = | |
10002 | create_dwp_v2_section (&dwp_file->sections.line, | |
10003 | sections.line_offset, sections.line_size); | |
10004 | dwo_file->sections.loc = | |
10005 | create_dwp_v2_section (&dwp_file->sections.loc, | |
10006 | sections.loc_offset, sections.loc_size); | |
10007 | dwo_file->sections.macinfo = | |
10008 | create_dwp_v2_section (&dwp_file->sections.macinfo, | |
10009 | sections.macinfo_offset, sections.macinfo_size); | |
10010 | dwo_file->sections.macro = | |
10011 | create_dwp_v2_section (&dwp_file->sections.macro, | |
10012 | sections.macro_offset, sections.macro_size); | |
10013 | dwo_file->sections.str_offsets = | |
10014 | create_dwp_v2_section (&dwp_file->sections.str_offsets, | |
10015 | sections.str_offsets_offset, | |
10016 | sections.str_offsets_size); | |
10017 | /* The "str" section is global to the entire DWP file. */ | |
10018 | dwo_file->sections.str = dwp_file->sections.str; | |
10019 | /* The info or types section is assigned below to dwo_unit, | |
10020 | there's no need to record it in dwo_file. | |
10021 | Also, we can't simply record type sections in dwo_file because | |
10022 | we record a pointer into the vector in dwo_unit. As we collect more | |
10023 | types we'll grow the vector and eventually have to reallocate space | |
10024 | for it, invalidating all copies of pointers into the previous | |
10025 | contents. */ | |
10026 | *dwo_file_slot = dwo_file; | |
10027 | } | |
10028 | else | |
10029 | { | |
10030 | if (dwarf2_read_debug) | |
10031 | { | |
10032 | fprintf_unfiltered (gdb_stdlog, "Using existing virtual DWO: %s\n", | |
10033 | virtual_dwo_name); | |
10034 | } | |
10035 | dwo_file = *dwo_file_slot; | |
10036 | } | |
10037 | do_cleanups (cleanups); | |
10038 | ||
10039 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); | |
10040 | dwo_unit->dwo_file = dwo_file; | |
10041 | dwo_unit->signature = signature; | |
10042 | dwo_unit->section = obstack_alloc (&objfile->objfile_obstack, | |
10043 | sizeof (struct dwarf2_section_info)); | |
10044 | *dwo_unit->section = create_dwp_v2_section (is_debug_types | |
10045 | ? &dwp_file->sections.types | |
10046 | : &dwp_file->sections.info, | |
10047 | sections.info_or_types_offset, | |
10048 | sections.info_or_types_size); | |
10049 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ | |
10050 | ||
10051 | return dwo_unit; | |
10052 | } | |
10053 | ||
57d63ce2 DE |
10054 | /* Lookup the DWO unit with SIGNATURE in DWP_FILE. |
10055 | Returns NULL if the signature isn't found. */ | |
80626a55 DE |
10056 | |
10057 | static struct dwo_unit * | |
57d63ce2 DE |
10058 | lookup_dwo_unit_in_dwp (struct dwp_file *dwp_file, const char *comp_dir, |
10059 | ULONGEST signature, int is_debug_types) | |
80626a55 | 10060 | { |
57d63ce2 DE |
10061 | const struct dwp_hash_table *dwp_htab = |
10062 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
80626a55 | 10063 | bfd *dbfd = dwp_file->dbfd; |
57d63ce2 | 10064 | uint32_t mask = dwp_htab->nr_slots - 1; |
80626a55 DE |
10065 | uint32_t hash = signature & mask; |
10066 | uint32_t hash2 = ((signature >> 32) & mask) | 1; | |
10067 | unsigned int i; | |
10068 | void **slot; | |
10069 | struct dwo_unit find_dwo_cu, *dwo_cu; | |
10070 | ||
10071 | memset (&find_dwo_cu, 0, sizeof (find_dwo_cu)); | |
10072 | find_dwo_cu.signature = signature; | |
19ac8c2e DE |
10073 | slot = htab_find_slot (is_debug_types |
10074 | ? dwp_file->loaded_tus | |
10075 | : dwp_file->loaded_cus, | |
10076 | &find_dwo_cu, INSERT); | |
80626a55 DE |
10077 | |
10078 | if (*slot != NULL) | |
10079 | return *slot; | |
10080 | ||
10081 | /* Use a for loop so that we don't loop forever on bad debug info. */ | |
57d63ce2 | 10082 | for (i = 0; i < dwp_htab->nr_slots; ++i) |
80626a55 DE |
10083 | { |
10084 | ULONGEST signature_in_table; | |
10085 | ||
10086 | signature_in_table = | |
57d63ce2 | 10087 | read_8_bytes (dbfd, dwp_htab->hash_table + hash * sizeof (uint64_t)); |
80626a55 DE |
10088 | if (signature_in_table == signature) |
10089 | { | |
57d63ce2 DE |
10090 | uint32_t unit_index = |
10091 | read_4_bytes (dbfd, | |
10092 | dwp_htab->unit_table + hash * sizeof (uint32_t)); | |
80626a55 | 10093 | |
73869dc2 DE |
10094 | if (dwp_file->version == 1) |
10095 | { | |
10096 | *slot = create_dwo_unit_in_dwp_v1 (dwp_file, unit_index, | |
10097 | comp_dir, signature, | |
10098 | is_debug_types); | |
10099 | } | |
10100 | else | |
10101 | { | |
10102 | *slot = create_dwo_unit_in_dwp_v2 (dwp_file, unit_index, | |
10103 | comp_dir, signature, | |
10104 | is_debug_types); | |
10105 | } | |
80626a55 DE |
10106 | return *slot; |
10107 | } | |
10108 | if (signature_in_table == 0) | |
10109 | return NULL; | |
10110 | hash = (hash + hash2) & mask; | |
10111 | } | |
10112 | ||
10113 | error (_("Dwarf Error: bad DWP hash table, lookup didn't terminate" | |
10114 | " [in module %s]"), | |
10115 | dwp_file->name); | |
10116 | } | |
10117 | ||
ab5088bf | 10118 | /* Subroutine of open_dwo_file,open_dwp_file to simplify them. |
3019eac3 DE |
10119 | Open the file specified by FILE_NAME and hand it off to BFD for |
10120 | preliminary analysis. Return a newly initialized bfd *, which | |
10121 | includes a canonicalized copy of FILE_NAME. | |
80626a55 | 10122 | If IS_DWP is TRUE, we're opening a DWP file, otherwise a DWO file. |
6ac97d4c DE |
10123 | SEARCH_CWD is true if the current directory is to be searched. |
10124 | It will be searched before debug-file-directory. | |
10125 | If unable to find/open the file, return NULL. | |
3019eac3 DE |
10126 | NOTE: This function is derived from symfile_bfd_open. */ |
10127 | ||
10128 | static bfd * | |
6ac97d4c | 10129 | try_open_dwop_file (const char *file_name, int is_dwp, int search_cwd) |
3019eac3 DE |
10130 | { |
10131 | bfd *sym_bfd; | |
80626a55 | 10132 | int desc, flags; |
3019eac3 | 10133 | char *absolute_name; |
9c02c129 DE |
10134 | /* Blech. OPF_TRY_CWD_FIRST also disables searching the path list if |
10135 | FILE_NAME contains a '/'. So we can't use it. Instead prepend "." | |
10136 | to debug_file_directory. */ | |
10137 | char *search_path; | |
10138 | static const char dirname_separator_string[] = { DIRNAME_SEPARATOR, '\0' }; | |
10139 | ||
6ac97d4c DE |
10140 | if (search_cwd) |
10141 | { | |
10142 | if (*debug_file_directory != '\0') | |
10143 | search_path = concat (".", dirname_separator_string, | |
10144 | debug_file_directory, NULL); | |
10145 | else | |
10146 | search_path = xstrdup ("."); | |
10147 | } | |
9c02c129 | 10148 | else |
6ac97d4c | 10149 | search_path = xstrdup (debug_file_directory); |
3019eac3 | 10150 | |
492c0ab7 | 10151 | flags = OPF_RETURN_REALPATH; |
80626a55 DE |
10152 | if (is_dwp) |
10153 | flags |= OPF_SEARCH_IN_PATH; | |
9c02c129 | 10154 | desc = openp (search_path, flags, file_name, |
3019eac3 | 10155 | O_RDONLY | O_BINARY, &absolute_name); |
9c02c129 | 10156 | xfree (search_path); |
3019eac3 DE |
10157 | if (desc < 0) |
10158 | return NULL; | |
10159 | ||
bb397797 | 10160 | sym_bfd = gdb_bfd_open (absolute_name, gnutarget, desc); |
a4453b7e | 10161 | xfree (absolute_name); |
9c02c129 DE |
10162 | if (sym_bfd == NULL) |
10163 | return NULL; | |
3019eac3 DE |
10164 | bfd_set_cacheable (sym_bfd, 1); |
10165 | ||
10166 | if (!bfd_check_format (sym_bfd, bfd_object)) | |
10167 | { | |
cbb099e8 | 10168 | gdb_bfd_unref (sym_bfd); /* This also closes desc. */ |
3019eac3 DE |
10169 | return NULL; |
10170 | } | |
10171 | ||
3019eac3 DE |
10172 | return sym_bfd; |
10173 | } | |
10174 | ||
ab5088bf | 10175 | /* Try to open DWO file FILE_NAME. |
3019eac3 DE |
10176 | COMP_DIR is the DW_AT_comp_dir attribute. |
10177 | The result is the bfd handle of the file. | |
10178 | If there is a problem finding or opening the file, return NULL. | |
10179 | Upon success, the canonicalized path of the file is stored in the bfd, | |
10180 | same as symfile_bfd_open. */ | |
10181 | ||
10182 | static bfd * | |
ab5088bf | 10183 | open_dwo_file (const char *file_name, const char *comp_dir) |
3019eac3 DE |
10184 | { |
10185 | bfd *abfd; | |
3019eac3 | 10186 | |
80626a55 | 10187 | if (IS_ABSOLUTE_PATH (file_name)) |
6ac97d4c | 10188 | return try_open_dwop_file (file_name, 0 /*is_dwp*/, 0 /*search_cwd*/); |
3019eac3 DE |
10189 | |
10190 | /* Before trying the search path, try DWO_NAME in COMP_DIR. */ | |
10191 | ||
10192 | if (comp_dir != NULL) | |
10193 | { | |
80626a55 | 10194 | char *path_to_try = concat (comp_dir, SLASH_STRING, file_name, NULL); |
3019eac3 DE |
10195 | |
10196 | /* NOTE: If comp_dir is a relative path, this will also try the | |
10197 | search path, which seems useful. */ | |
6ac97d4c | 10198 | abfd = try_open_dwop_file (path_to_try, 0 /*is_dwp*/, 1 /*search_cwd*/); |
3019eac3 DE |
10199 | xfree (path_to_try); |
10200 | if (abfd != NULL) | |
10201 | return abfd; | |
10202 | } | |
10203 | ||
10204 | /* That didn't work, try debug-file-directory, which, despite its name, | |
10205 | is a list of paths. */ | |
10206 | ||
10207 | if (*debug_file_directory == '\0') | |
10208 | return NULL; | |
10209 | ||
6ac97d4c | 10210 | return try_open_dwop_file (file_name, 0 /*is_dwp*/, 1 /*search_cwd*/); |
3019eac3 DE |
10211 | } |
10212 | ||
80626a55 DE |
10213 | /* This function is mapped across the sections and remembers the offset and |
10214 | size of each of the DWO debugging sections we are interested in. */ | |
10215 | ||
10216 | static void | |
10217 | dwarf2_locate_dwo_sections (bfd *abfd, asection *sectp, void *dwo_sections_ptr) | |
10218 | { | |
10219 | struct dwo_sections *dwo_sections = dwo_sections_ptr; | |
10220 | const struct dwop_section_names *names = &dwop_section_names; | |
10221 | ||
10222 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
10223 | { | |
73869dc2 | 10224 | dwo_sections->abbrev.s.asection = sectp; |
80626a55 DE |
10225 | dwo_sections->abbrev.size = bfd_get_section_size (sectp); |
10226 | } | |
10227 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
10228 | { | |
73869dc2 | 10229 | dwo_sections->info.s.asection = sectp; |
80626a55 DE |
10230 | dwo_sections->info.size = bfd_get_section_size (sectp); |
10231 | } | |
10232 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
10233 | { | |
73869dc2 | 10234 | dwo_sections->line.s.asection = sectp; |
80626a55 DE |
10235 | dwo_sections->line.size = bfd_get_section_size (sectp); |
10236 | } | |
10237 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
10238 | { | |
73869dc2 | 10239 | dwo_sections->loc.s.asection = sectp; |
80626a55 DE |
10240 | dwo_sections->loc.size = bfd_get_section_size (sectp); |
10241 | } | |
10242 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
10243 | { | |
73869dc2 | 10244 | dwo_sections->macinfo.s.asection = sectp; |
80626a55 DE |
10245 | dwo_sections->macinfo.size = bfd_get_section_size (sectp); |
10246 | } | |
10247 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
10248 | { | |
73869dc2 | 10249 | dwo_sections->macro.s.asection = sectp; |
80626a55 DE |
10250 | dwo_sections->macro.size = bfd_get_section_size (sectp); |
10251 | } | |
10252 | else if (section_is_p (sectp->name, &names->str_dwo)) | |
10253 | { | |
73869dc2 | 10254 | dwo_sections->str.s.asection = sectp; |
80626a55 DE |
10255 | dwo_sections->str.size = bfd_get_section_size (sectp); |
10256 | } | |
10257 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
10258 | { | |
73869dc2 | 10259 | dwo_sections->str_offsets.s.asection = sectp; |
80626a55 DE |
10260 | dwo_sections->str_offsets.size = bfd_get_section_size (sectp); |
10261 | } | |
10262 | else if (section_is_p (sectp->name, &names->types_dwo)) | |
10263 | { | |
10264 | struct dwarf2_section_info type_section; | |
10265 | ||
10266 | memset (&type_section, 0, sizeof (type_section)); | |
73869dc2 | 10267 | type_section.s.asection = sectp; |
80626a55 DE |
10268 | type_section.size = bfd_get_section_size (sectp); |
10269 | VEC_safe_push (dwarf2_section_info_def, dwo_sections->types, | |
10270 | &type_section); | |
10271 | } | |
10272 | } | |
10273 | ||
ab5088bf | 10274 | /* Initialize the use of the DWO file specified by DWO_NAME and referenced |
19c3d4c9 | 10275 | by PER_CU. This is for the non-DWP case. |
80626a55 | 10276 | The result is NULL if DWO_NAME can't be found. */ |
3019eac3 DE |
10277 | |
10278 | static struct dwo_file * | |
0ac5b59e DE |
10279 | open_and_init_dwo_file (struct dwarf2_per_cu_data *per_cu, |
10280 | const char *dwo_name, const char *comp_dir) | |
3019eac3 DE |
10281 | { |
10282 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
80626a55 DE |
10283 | struct dwo_file *dwo_file; |
10284 | bfd *dbfd; | |
3019eac3 DE |
10285 | struct cleanup *cleanups; |
10286 | ||
ab5088bf | 10287 | dbfd = open_dwo_file (dwo_name, comp_dir); |
80626a55 DE |
10288 | if (dbfd == NULL) |
10289 | { | |
10290 | if (dwarf2_read_debug) | |
10291 | fprintf_unfiltered (gdb_stdlog, "DWO file not found: %s\n", dwo_name); | |
10292 | return NULL; | |
10293 | } | |
10294 | dwo_file = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_file); | |
0ac5b59e DE |
10295 | dwo_file->dwo_name = dwo_name; |
10296 | dwo_file->comp_dir = comp_dir; | |
80626a55 | 10297 | dwo_file->dbfd = dbfd; |
3019eac3 DE |
10298 | |
10299 | cleanups = make_cleanup (free_dwo_file_cleanup, dwo_file); | |
10300 | ||
80626a55 | 10301 | bfd_map_over_sections (dbfd, dwarf2_locate_dwo_sections, &dwo_file->sections); |
3019eac3 | 10302 | |
19c3d4c9 | 10303 | dwo_file->cu = create_dwo_cu (dwo_file); |
3019eac3 DE |
10304 | |
10305 | dwo_file->tus = create_debug_types_hash_table (dwo_file, | |
10306 | dwo_file->sections.types); | |
10307 | ||
10308 | discard_cleanups (cleanups); | |
10309 | ||
80626a55 DE |
10310 | if (dwarf2_read_debug) |
10311 | fprintf_unfiltered (gdb_stdlog, "DWO file found: %s\n", dwo_name); | |
10312 | ||
3019eac3 DE |
10313 | return dwo_file; |
10314 | } | |
10315 | ||
80626a55 | 10316 | /* This function is mapped across the sections and remembers the offset and |
73869dc2 DE |
10317 | size of each of the DWP debugging sections common to version 1 and 2 that |
10318 | we are interested in. */ | |
3019eac3 | 10319 | |
80626a55 | 10320 | static void |
73869dc2 DE |
10321 | dwarf2_locate_common_dwp_sections (bfd *abfd, asection *sectp, |
10322 | void *dwp_file_ptr) | |
3019eac3 | 10323 | { |
80626a55 DE |
10324 | struct dwp_file *dwp_file = dwp_file_ptr; |
10325 | const struct dwop_section_names *names = &dwop_section_names; | |
10326 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
3019eac3 | 10327 | |
80626a55 | 10328 | /* Record the ELF section number for later lookup: this is what the |
73869dc2 | 10329 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ |
80626a55 DE |
10330 | gdb_assert (elf_section_nr < dwp_file->num_sections); |
10331 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
3019eac3 | 10332 | |
80626a55 DE |
10333 | /* Look for specific sections that we need. */ |
10334 | if (section_is_p (sectp->name, &names->str_dwo)) | |
10335 | { | |
73869dc2 | 10336 | dwp_file->sections.str.s.asection = sectp; |
80626a55 DE |
10337 | dwp_file->sections.str.size = bfd_get_section_size (sectp); |
10338 | } | |
10339 | else if (section_is_p (sectp->name, &names->cu_index)) | |
10340 | { | |
73869dc2 | 10341 | dwp_file->sections.cu_index.s.asection = sectp; |
80626a55 DE |
10342 | dwp_file->sections.cu_index.size = bfd_get_section_size (sectp); |
10343 | } | |
10344 | else if (section_is_p (sectp->name, &names->tu_index)) | |
10345 | { | |
73869dc2 | 10346 | dwp_file->sections.tu_index.s.asection = sectp; |
80626a55 DE |
10347 | dwp_file->sections.tu_index.size = bfd_get_section_size (sectp); |
10348 | } | |
10349 | } | |
3019eac3 | 10350 | |
73869dc2 DE |
10351 | /* This function is mapped across the sections and remembers the offset and |
10352 | size of each of the DWP version 2 debugging sections that we are interested | |
10353 | in. This is split into a separate function because we don't know if we | |
10354 | have version 1 or 2 until we parse the cu_index/tu_index sections. */ | |
10355 | ||
10356 | static void | |
10357 | dwarf2_locate_v2_dwp_sections (bfd *abfd, asection *sectp, void *dwp_file_ptr) | |
10358 | { | |
10359 | struct dwp_file *dwp_file = dwp_file_ptr; | |
10360 | const struct dwop_section_names *names = &dwop_section_names; | |
10361 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
10362 | ||
10363 | /* Record the ELF section number for later lookup: this is what the | |
10364 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ | |
10365 | gdb_assert (elf_section_nr < dwp_file->num_sections); | |
10366 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
10367 | ||
10368 | /* Look for specific sections that we need. */ | |
10369 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
10370 | { | |
10371 | dwp_file->sections.abbrev.s.asection = sectp; | |
10372 | dwp_file->sections.abbrev.size = bfd_get_section_size (sectp); | |
10373 | } | |
10374 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
10375 | { | |
10376 | dwp_file->sections.info.s.asection = sectp; | |
10377 | dwp_file->sections.info.size = bfd_get_section_size (sectp); | |
10378 | } | |
10379 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
10380 | { | |
10381 | dwp_file->sections.line.s.asection = sectp; | |
10382 | dwp_file->sections.line.size = bfd_get_section_size (sectp); | |
10383 | } | |
10384 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
10385 | { | |
10386 | dwp_file->sections.loc.s.asection = sectp; | |
10387 | dwp_file->sections.loc.size = bfd_get_section_size (sectp); | |
10388 | } | |
10389 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
10390 | { | |
10391 | dwp_file->sections.macinfo.s.asection = sectp; | |
10392 | dwp_file->sections.macinfo.size = bfd_get_section_size (sectp); | |
10393 | } | |
10394 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
10395 | { | |
10396 | dwp_file->sections.macro.s.asection = sectp; | |
10397 | dwp_file->sections.macro.size = bfd_get_section_size (sectp); | |
10398 | } | |
10399 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
10400 | { | |
10401 | dwp_file->sections.str_offsets.s.asection = sectp; | |
10402 | dwp_file->sections.str_offsets.size = bfd_get_section_size (sectp); | |
10403 | } | |
10404 | else if (section_is_p (sectp->name, &names->types_dwo)) | |
10405 | { | |
10406 | dwp_file->sections.types.s.asection = sectp; | |
10407 | dwp_file->sections.types.size = bfd_get_section_size (sectp); | |
10408 | } | |
10409 | } | |
10410 | ||
80626a55 | 10411 | /* Hash function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 10412 | |
80626a55 DE |
10413 | static hashval_t |
10414 | hash_dwp_loaded_cutus (const void *item) | |
10415 | { | |
10416 | const struct dwo_unit *dwo_unit = item; | |
3019eac3 | 10417 | |
80626a55 DE |
10418 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
10419 | return dwo_unit->signature; | |
3019eac3 DE |
10420 | } |
10421 | ||
80626a55 | 10422 | /* Equality function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 10423 | |
80626a55 DE |
10424 | static int |
10425 | eq_dwp_loaded_cutus (const void *a, const void *b) | |
3019eac3 | 10426 | { |
80626a55 DE |
10427 | const struct dwo_unit *dua = a; |
10428 | const struct dwo_unit *dub = b; | |
3019eac3 | 10429 | |
80626a55 DE |
10430 | return dua->signature == dub->signature; |
10431 | } | |
3019eac3 | 10432 | |
80626a55 | 10433 | /* Allocate a hash table for dwp_file loaded CUs/TUs. */ |
3019eac3 | 10434 | |
80626a55 DE |
10435 | static htab_t |
10436 | allocate_dwp_loaded_cutus_table (struct objfile *objfile) | |
10437 | { | |
10438 | return htab_create_alloc_ex (3, | |
10439 | hash_dwp_loaded_cutus, | |
10440 | eq_dwp_loaded_cutus, | |
10441 | NULL, | |
10442 | &objfile->objfile_obstack, | |
10443 | hashtab_obstack_allocate, | |
10444 | dummy_obstack_deallocate); | |
10445 | } | |
3019eac3 | 10446 | |
ab5088bf DE |
10447 | /* Try to open DWP file FILE_NAME. |
10448 | The result is the bfd handle of the file. | |
10449 | If there is a problem finding or opening the file, return NULL. | |
10450 | Upon success, the canonicalized path of the file is stored in the bfd, | |
10451 | same as symfile_bfd_open. */ | |
10452 | ||
10453 | static bfd * | |
10454 | open_dwp_file (const char *file_name) | |
10455 | { | |
6ac97d4c DE |
10456 | bfd *abfd; |
10457 | ||
10458 | abfd = try_open_dwop_file (file_name, 1 /*is_dwp*/, 1 /*search_cwd*/); | |
10459 | if (abfd != NULL) | |
10460 | return abfd; | |
10461 | ||
10462 | /* Work around upstream bug 15652. | |
10463 | http://sourceware.org/bugzilla/show_bug.cgi?id=15652 | |
10464 | [Whether that's a "bug" is debatable, but it is getting in our way.] | |
10465 | We have no real idea where the dwp file is, because gdb's realpath-ing | |
10466 | of the executable's path may have discarded the needed info. | |
10467 | [IWBN if the dwp file name was recorded in the executable, akin to | |
10468 | .gnu_debuglink, but that doesn't exist yet.] | |
10469 | Strip the directory from FILE_NAME and search again. */ | |
10470 | if (*debug_file_directory != '\0') | |
10471 | { | |
10472 | /* Don't implicitly search the current directory here. | |
10473 | If the user wants to search "." to handle this case, | |
10474 | it must be added to debug-file-directory. */ | |
10475 | return try_open_dwop_file (lbasename (file_name), 1 /*is_dwp*/, | |
10476 | 0 /*search_cwd*/); | |
10477 | } | |
10478 | ||
10479 | return NULL; | |
ab5088bf DE |
10480 | } |
10481 | ||
80626a55 DE |
10482 | /* Initialize the use of the DWP file for the current objfile. |
10483 | By convention the name of the DWP file is ${objfile}.dwp. | |
10484 | The result is NULL if it can't be found. */ | |
a766d390 | 10485 | |
80626a55 | 10486 | static struct dwp_file * |
ab5088bf | 10487 | open_and_init_dwp_file (void) |
80626a55 DE |
10488 | { |
10489 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
10490 | struct dwp_file *dwp_file; | |
10491 | char *dwp_name; | |
10492 | bfd *dbfd; | |
10493 | struct cleanup *cleanups; | |
10494 | ||
82bf32bc JK |
10495 | /* Try to find first .dwp for the binary file before any symbolic links |
10496 | resolving. */ | |
10497 | dwp_name = xstrprintf ("%s.dwp", objfile->original_name); | |
80626a55 DE |
10498 | cleanups = make_cleanup (xfree, dwp_name); |
10499 | ||
ab5088bf | 10500 | dbfd = open_dwp_file (dwp_name); |
82bf32bc JK |
10501 | if (dbfd == NULL |
10502 | && strcmp (objfile->original_name, objfile_name (objfile)) != 0) | |
10503 | { | |
10504 | /* Try to find .dwp for the binary file after gdb_realpath resolving. */ | |
10505 | dwp_name = xstrprintf ("%s.dwp", objfile_name (objfile)); | |
10506 | make_cleanup (xfree, dwp_name); | |
10507 | dbfd = open_dwp_file (dwp_name); | |
10508 | } | |
10509 | ||
80626a55 DE |
10510 | if (dbfd == NULL) |
10511 | { | |
10512 | if (dwarf2_read_debug) | |
10513 | fprintf_unfiltered (gdb_stdlog, "DWP file not found: %s\n", dwp_name); | |
10514 | do_cleanups (cleanups); | |
10515 | return NULL; | |
3019eac3 | 10516 | } |
80626a55 | 10517 | dwp_file = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwp_file); |
93417882 | 10518 | dwp_file->name = bfd_get_filename (dbfd); |
80626a55 DE |
10519 | dwp_file->dbfd = dbfd; |
10520 | do_cleanups (cleanups); | |
c906108c | 10521 | |
80626a55 DE |
10522 | /* +1: section 0 is unused */ |
10523 | dwp_file->num_sections = bfd_count_sections (dbfd) + 1; | |
10524 | dwp_file->elf_sections = | |
10525 | OBSTACK_CALLOC (&objfile->objfile_obstack, | |
10526 | dwp_file->num_sections, asection *); | |
10527 | ||
73869dc2 | 10528 | bfd_map_over_sections (dbfd, dwarf2_locate_common_dwp_sections, dwp_file); |
80626a55 DE |
10529 | |
10530 | dwp_file->cus = create_dwp_hash_table (dwp_file, 0); | |
10531 | ||
10532 | dwp_file->tus = create_dwp_hash_table (dwp_file, 1); | |
10533 | ||
73869dc2 DE |
10534 | /* The DWP file version is stored in the hash table. Oh well. */ |
10535 | if (dwp_file->cus->version != dwp_file->tus->version) | |
10536 | { | |
10537 | /* Technically speaking, we should try to limp along, but this is | |
10538 | pretty bizarre. */ | |
10539 | error (_("Dwarf Error: DWP file CU version %d doesn't match" | |
10540 | " TU version %d [in DWP file %s]"), | |
10541 | dwp_file->cus->version, dwp_file->tus->version, dwp_name); | |
10542 | } | |
10543 | dwp_file->version = dwp_file->cus->version; | |
10544 | ||
10545 | if (dwp_file->version == 2) | |
10546 | bfd_map_over_sections (dbfd, dwarf2_locate_v2_dwp_sections, dwp_file); | |
10547 | ||
19ac8c2e DE |
10548 | dwp_file->loaded_cus = allocate_dwp_loaded_cutus_table (objfile); |
10549 | dwp_file->loaded_tus = allocate_dwp_loaded_cutus_table (objfile); | |
80626a55 | 10550 | |
80626a55 DE |
10551 | if (dwarf2_read_debug) |
10552 | { | |
10553 | fprintf_unfiltered (gdb_stdlog, "DWP file found: %s\n", dwp_file->name); | |
10554 | fprintf_unfiltered (gdb_stdlog, | |
21aa081e PA |
10555 | " %s CUs, %s TUs\n", |
10556 | pulongest (dwp_file->cus ? dwp_file->cus->nr_units : 0), | |
10557 | pulongest (dwp_file->tus ? dwp_file->tus->nr_units : 0)); | |
80626a55 DE |
10558 | } |
10559 | ||
10560 | return dwp_file; | |
3019eac3 | 10561 | } |
c906108c | 10562 | |
ab5088bf DE |
10563 | /* Wrapper around open_and_init_dwp_file, only open it once. */ |
10564 | ||
10565 | static struct dwp_file * | |
10566 | get_dwp_file (void) | |
10567 | { | |
10568 | if (! dwarf2_per_objfile->dwp_checked) | |
10569 | { | |
10570 | dwarf2_per_objfile->dwp_file = open_and_init_dwp_file (); | |
10571 | dwarf2_per_objfile->dwp_checked = 1; | |
10572 | } | |
10573 | return dwarf2_per_objfile->dwp_file; | |
10574 | } | |
10575 | ||
80626a55 DE |
10576 | /* Subroutine of lookup_dwo_comp_unit, lookup_dwo_type_unit. |
10577 | Look up the CU/TU with signature SIGNATURE, either in DWO file DWO_NAME | |
10578 | or in the DWP file for the objfile, referenced by THIS_UNIT. | |
3019eac3 | 10579 | If non-NULL, comp_dir is the DW_AT_comp_dir attribute. |
80626a55 DE |
10580 | IS_DEBUG_TYPES is non-zero if reading a TU, otherwise read a CU. |
10581 | ||
10582 | This is called, for example, when wanting to read a variable with a | |
10583 | complex location. Therefore we don't want to do file i/o for every call. | |
10584 | Therefore we don't want to look for a DWO file on every call. | |
10585 | Therefore we first see if we've already seen SIGNATURE in a DWP file, | |
10586 | then we check if we've already seen DWO_NAME, and only THEN do we check | |
10587 | for a DWO file. | |
10588 | ||
1c658ad5 | 10589 | The result is a pointer to the dwo_unit object or NULL if we didn't find it |
80626a55 | 10590 | (dwo_id mismatch or couldn't find the DWO/DWP file). */ |
debd256d | 10591 | |
3019eac3 | 10592 | static struct dwo_unit * |
80626a55 DE |
10593 | lookup_dwo_cutu (struct dwarf2_per_cu_data *this_unit, |
10594 | const char *dwo_name, const char *comp_dir, | |
10595 | ULONGEST signature, int is_debug_types) | |
3019eac3 DE |
10596 | { |
10597 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
80626a55 DE |
10598 | const char *kind = is_debug_types ? "TU" : "CU"; |
10599 | void **dwo_file_slot; | |
3019eac3 | 10600 | struct dwo_file *dwo_file; |
80626a55 | 10601 | struct dwp_file *dwp_file; |
cb1df416 | 10602 | |
6a506a2d DE |
10603 | /* First see if there's a DWP file. |
10604 | If we have a DWP file but didn't find the DWO inside it, don't | |
10605 | look for the original DWO file. It makes gdb behave differently | |
10606 | depending on whether one is debugging in the build tree. */ | |
cf2c3c16 | 10607 | |
ab5088bf | 10608 | dwp_file = get_dwp_file (); |
80626a55 | 10609 | if (dwp_file != NULL) |
cf2c3c16 | 10610 | { |
80626a55 DE |
10611 | const struct dwp_hash_table *dwp_htab = |
10612 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
10613 | ||
10614 | if (dwp_htab != NULL) | |
10615 | { | |
10616 | struct dwo_unit *dwo_cutu = | |
57d63ce2 DE |
10617 | lookup_dwo_unit_in_dwp (dwp_file, comp_dir, |
10618 | signature, is_debug_types); | |
80626a55 DE |
10619 | |
10620 | if (dwo_cutu != NULL) | |
10621 | { | |
10622 | if (dwarf2_read_debug) | |
10623 | { | |
10624 | fprintf_unfiltered (gdb_stdlog, | |
10625 | "Virtual DWO %s %s found: @%s\n", | |
10626 | kind, hex_string (signature), | |
10627 | host_address_to_string (dwo_cutu)); | |
10628 | } | |
10629 | return dwo_cutu; | |
10630 | } | |
10631 | } | |
10632 | } | |
6a506a2d | 10633 | else |
80626a55 | 10634 | { |
6a506a2d | 10635 | /* No DWP file, look for the DWO file. */ |
80626a55 | 10636 | |
6a506a2d DE |
10637 | dwo_file_slot = lookup_dwo_file_slot (dwo_name, comp_dir); |
10638 | if (*dwo_file_slot == NULL) | |
80626a55 | 10639 | { |
6a506a2d DE |
10640 | /* Read in the file and build a table of the CUs/TUs it contains. */ |
10641 | *dwo_file_slot = open_and_init_dwo_file (this_unit, dwo_name, comp_dir); | |
19c3d4c9 | 10642 | } |
6a506a2d DE |
10643 | /* NOTE: This will be NULL if unable to open the file. */ |
10644 | dwo_file = *dwo_file_slot; | |
3019eac3 | 10645 | |
6a506a2d | 10646 | if (dwo_file != NULL) |
19c3d4c9 | 10647 | { |
6a506a2d DE |
10648 | struct dwo_unit *dwo_cutu = NULL; |
10649 | ||
10650 | if (is_debug_types && dwo_file->tus) | |
10651 | { | |
10652 | struct dwo_unit find_dwo_cutu; | |
10653 | ||
10654 | memset (&find_dwo_cutu, 0, sizeof (find_dwo_cutu)); | |
10655 | find_dwo_cutu.signature = signature; | |
10656 | dwo_cutu = htab_find (dwo_file->tus, &find_dwo_cutu); | |
10657 | } | |
10658 | else if (!is_debug_types && dwo_file->cu) | |
80626a55 | 10659 | { |
6a506a2d DE |
10660 | if (signature == dwo_file->cu->signature) |
10661 | dwo_cutu = dwo_file->cu; | |
10662 | } | |
10663 | ||
10664 | if (dwo_cutu != NULL) | |
10665 | { | |
10666 | if (dwarf2_read_debug) | |
10667 | { | |
10668 | fprintf_unfiltered (gdb_stdlog, "DWO %s %s(%s) found: @%s\n", | |
10669 | kind, dwo_name, hex_string (signature), | |
10670 | host_address_to_string (dwo_cutu)); | |
10671 | } | |
10672 | return dwo_cutu; | |
80626a55 DE |
10673 | } |
10674 | } | |
2e276125 | 10675 | } |
9cdd5dbd | 10676 | |
80626a55 DE |
10677 | /* We didn't find it. This could mean a dwo_id mismatch, or |
10678 | someone deleted the DWO/DWP file, or the search path isn't set up | |
10679 | correctly to find the file. */ | |
10680 | ||
10681 | if (dwarf2_read_debug) | |
10682 | { | |
10683 | fprintf_unfiltered (gdb_stdlog, "DWO %s %s(%s) not found\n", | |
10684 | kind, dwo_name, hex_string (signature)); | |
10685 | } | |
3019eac3 | 10686 | |
6656a72d DE |
10687 | /* This is a warning and not a complaint because it can be caused by |
10688 | pilot error (e.g., user accidentally deleting the DWO). */ | |
43942612 DE |
10689 | { |
10690 | /* Print the name of the DWP file if we looked there, helps the user | |
10691 | better diagnose the problem. */ | |
10692 | char *dwp_text = NULL; | |
10693 | struct cleanup *cleanups; | |
10694 | ||
10695 | if (dwp_file != NULL) | |
10696 | dwp_text = xstrprintf (" [in DWP file %s]", lbasename (dwp_file->name)); | |
10697 | cleanups = make_cleanup (xfree, dwp_text); | |
10698 | ||
10699 | warning (_("Could not find DWO %s %s(%s)%s referenced by %s at offset 0x%x" | |
10700 | " [in module %s]"), | |
10701 | kind, dwo_name, hex_string (signature), | |
10702 | dwp_text != NULL ? dwp_text : "", | |
10703 | this_unit->is_debug_types ? "TU" : "CU", | |
10704 | this_unit->offset.sect_off, objfile_name (objfile)); | |
10705 | ||
10706 | do_cleanups (cleanups); | |
10707 | } | |
3019eac3 | 10708 | return NULL; |
5fb290d7 DJ |
10709 | } |
10710 | ||
80626a55 DE |
10711 | /* Lookup the DWO CU DWO_NAME/SIGNATURE referenced from THIS_CU. |
10712 | See lookup_dwo_cutu_unit for details. */ | |
10713 | ||
10714 | static struct dwo_unit * | |
10715 | lookup_dwo_comp_unit (struct dwarf2_per_cu_data *this_cu, | |
10716 | const char *dwo_name, const char *comp_dir, | |
10717 | ULONGEST signature) | |
10718 | { | |
10719 | return lookup_dwo_cutu (this_cu, dwo_name, comp_dir, signature, 0); | |
10720 | } | |
10721 | ||
10722 | /* Lookup the DWO TU DWO_NAME/SIGNATURE referenced from THIS_TU. | |
10723 | See lookup_dwo_cutu_unit for details. */ | |
10724 | ||
10725 | static struct dwo_unit * | |
10726 | lookup_dwo_type_unit (struct signatured_type *this_tu, | |
10727 | const char *dwo_name, const char *comp_dir) | |
10728 | { | |
10729 | return lookup_dwo_cutu (&this_tu->per_cu, dwo_name, comp_dir, this_tu->signature, 1); | |
10730 | } | |
10731 | ||
89e63ee4 DE |
10732 | /* Traversal function for queue_and_load_all_dwo_tus. */ |
10733 | ||
10734 | static int | |
10735 | queue_and_load_dwo_tu (void **slot, void *info) | |
10736 | { | |
10737 | struct dwo_unit *dwo_unit = (struct dwo_unit *) *slot; | |
10738 | struct dwarf2_per_cu_data *per_cu = (struct dwarf2_per_cu_data *) info; | |
10739 | ULONGEST signature = dwo_unit->signature; | |
10740 | struct signatured_type *sig_type = | |
10741 | lookup_dwo_signatured_type (per_cu->cu, signature); | |
10742 | ||
10743 | if (sig_type != NULL) | |
10744 | { | |
10745 | struct dwarf2_per_cu_data *sig_cu = &sig_type->per_cu; | |
10746 | ||
10747 | /* We pass NULL for DEPENDENT_CU because we don't yet know if there's | |
10748 | a real dependency of PER_CU on SIG_TYPE. That is detected later | |
10749 | while processing PER_CU. */ | |
10750 | if (maybe_queue_comp_unit (NULL, sig_cu, per_cu->cu->language)) | |
10751 | load_full_type_unit (sig_cu); | |
10752 | VEC_safe_push (dwarf2_per_cu_ptr, per_cu->imported_symtabs, sig_cu); | |
10753 | } | |
10754 | ||
10755 | return 1; | |
10756 | } | |
10757 | ||
10758 | /* Queue all TUs contained in the DWO of PER_CU to be read in. | |
10759 | The DWO may have the only definition of the type, though it may not be | |
10760 | referenced anywhere in PER_CU. Thus we have to load *all* its TUs. | |
10761 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021 */ | |
10762 | ||
10763 | static void | |
10764 | queue_and_load_all_dwo_tus (struct dwarf2_per_cu_data *per_cu) | |
10765 | { | |
10766 | struct dwo_unit *dwo_unit; | |
10767 | struct dwo_file *dwo_file; | |
10768 | ||
10769 | gdb_assert (!per_cu->is_debug_types); | |
10770 | gdb_assert (get_dwp_file () == NULL); | |
10771 | gdb_assert (per_cu->cu != NULL); | |
10772 | ||
10773 | dwo_unit = per_cu->cu->dwo_unit; | |
10774 | gdb_assert (dwo_unit != NULL); | |
10775 | ||
10776 | dwo_file = dwo_unit->dwo_file; | |
10777 | if (dwo_file->tus != NULL) | |
10778 | htab_traverse_noresize (dwo_file->tus, queue_and_load_dwo_tu, per_cu); | |
10779 | } | |
10780 | ||
3019eac3 DE |
10781 | /* Free all resources associated with DWO_FILE. |
10782 | Close the DWO file and munmap the sections. | |
10783 | All memory should be on the objfile obstack. */ | |
348e048f DE |
10784 | |
10785 | static void | |
3019eac3 | 10786 | free_dwo_file (struct dwo_file *dwo_file, struct objfile *objfile) |
348e048f | 10787 | { |
3019eac3 DE |
10788 | int ix; |
10789 | struct dwarf2_section_info *section; | |
348e048f | 10790 | |
5c6fa7ab | 10791 | /* Note: dbfd is NULL for virtual DWO files. */ |
80626a55 | 10792 | gdb_bfd_unref (dwo_file->dbfd); |
348e048f | 10793 | |
3019eac3 DE |
10794 | VEC_free (dwarf2_section_info_def, dwo_file->sections.types); |
10795 | } | |
348e048f | 10796 | |
3019eac3 | 10797 | /* Wrapper for free_dwo_file for use in cleanups. */ |
348e048f | 10798 | |
3019eac3 DE |
10799 | static void |
10800 | free_dwo_file_cleanup (void *arg) | |
10801 | { | |
10802 | struct dwo_file *dwo_file = (struct dwo_file *) arg; | |
10803 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
348e048f | 10804 | |
3019eac3 DE |
10805 | free_dwo_file (dwo_file, objfile); |
10806 | } | |
348e048f | 10807 | |
3019eac3 | 10808 | /* Traversal function for free_dwo_files. */ |
2ab95328 | 10809 | |
3019eac3 DE |
10810 | static int |
10811 | free_dwo_file_from_slot (void **slot, void *info) | |
10812 | { | |
10813 | struct dwo_file *dwo_file = (struct dwo_file *) *slot; | |
10814 | struct objfile *objfile = (struct objfile *) info; | |
348e048f | 10815 | |
3019eac3 | 10816 | free_dwo_file (dwo_file, objfile); |
348e048f | 10817 | |
3019eac3 DE |
10818 | return 1; |
10819 | } | |
348e048f | 10820 | |
3019eac3 | 10821 | /* Free all resources associated with DWO_FILES. */ |
348e048f | 10822 | |
3019eac3 DE |
10823 | static void |
10824 | free_dwo_files (htab_t dwo_files, struct objfile *objfile) | |
10825 | { | |
10826 | htab_traverse_noresize (dwo_files, free_dwo_file_from_slot, objfile); | |
348e048f | 10827 | } |
3019eac3 DE |
10828 | \f |
10829 | /* Read in various DIEs. */ | |
348e048f | 10830 | |
d389af10 JK |
10831 | /* qsort helper for inherit_abstract_dies. */ |
10832 | ||
10833 | static int | |
10834 | unsigned_int_compar (const void *ap, const void *bp) | |
10835 | { | |
10836 | unsigned int a = *(unsigned int *) ap; | |
10837 | unsigned int b = *(unsigned int *) bp; | |
10838 | ||
10839 | return (a > b) - (b > a); | |
10840 | } | |
10841 | ||
10842 | /* DW_AT_abstract_origin inherits whole DIEs (not just their attributes). | |
3e43a32a MS |
10843 | Inherit only the children of the DW_AT_abstract_origin DIE not being |
10844 | already referenced by DW_AT_abstract_origin from the children of the | |
10845 | current DIE. */ | |
d389af10 JK |
10846 | |
10847 | static void | |
10848 | inherit_abstract_dies (struct die_info *die, struct dwarf2_cu *cu) | |
10849 | { | |
10850 | struct die_info *child_die; | |
10851 | unsigned die_children_count; | |
10852 | /* CU offsets which were referenced by children of the current DIE. */ | |
b64f50a1 JK |
10853 | sect_offset *offsets; |
10854 | sect_offset *offsets_end, *offsetp; | |
d389af10 JK |
10855 | /* Parent of DIE - referenced by DW_AT_abstract_origin. */ |
10856 | struct die_info *origin_die; | |
10857 | /* Iterator of the ORIGIN_DIE children. */ | |
10858 | struct die_info *origin_child_die; | |
10859 | struct cleanup *cleanups; | |
10860 | struct attribute *attr; | |
cd02d79d PA |
10861 | struct dwarf2_cu *origin_cu; |
10862 | struct pending **origin_previous_list_in_scope; | |
d389af10 JK |
10863 | |
10864 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
10865 | if (!attr) | |
10866 | return; | |
10867 | ||
cd02d79d PA |
10868 | /* Note that following die references may follow to a die in a |
10869 | different cu. */ | |
10870 | ||
10871 | origin_cu = cu; | |
10872 | origin_die = follow_die_ref (die, attr, &origin_cu); | |
10873 | ||
10874 | /* We're inheriting ORIGIN's children into the scope we'd put DIE's | |
10875 | symbols in. */ | |
10876 | origin_previous_list_in_scope = origin_cu->list_in_scope; | |
10877 | origin_cu->list_in_scope = cu->list_in_scope; | |
10878 | ||
edb3359d DJ |
10879 | if (die->tag != origin_die->tag |
10880 | && !(die->tag == DW_TAG_inlined_subroutine | |
10881 | && origin_die->tag == DW_TAG_subprogram)) | |
d389af10 JK |
10882 | complaint (&symfile_complaints, |
10883 | _("DIE 0x%x and its abstract origin 0x%x have different tags"), | |
b64f50a1 | 10884 | die->offset.sect_off, origin_die->offset.sect_off); |
d389af10 JK |
10885 | |
10886 | child_die = die->child; | |
10887 | die_children_count = 0; | |
10888 | while (child_die && child_die->tag) | |
10889 | { | |
10890 | child_die = sibling_die (child_die); | |
10891 | die_children_count++; | |
10892 | } | |
10893 | offsets = xmalloc (sizeof (*offsets) * die_children_count); | |
10894 | cleanups = make_cleanup (xfree, offsets); | |
10895 | ||
10896 | offsets_end = offsets; | |
10897 | child_die = die->child; | |
10898 | while (child_die && child_die->tag) | |
10899 | { | |
c38f313d DJ |
10900 | /* For each CHILD_DIE, find the corresponding child of |
10901 | ORIGIN_DIE. If there is more than one layer of | |
10902 | DW_AT_abstract_origin, follow them all; there shouldn't be, | |
10903 | but GCC versions at least through 4.4 generate this (GCC PR | |
10904 | 40573). */ | |
10905 | struct die_info *child_origin_die = child_die; | |
cd02d79d | 10906 | struct dwarf2_cu *child_origin_cu = cu; |
9a619af0 | 10907 | |
c38f313d DJ |
10908 | while (1) |
10909 | { | |
cd02d79d PA |
10910 | attr = dwarf2_attr (child_origin_die, DW_AT_abstract_origin, |
10911 | child_origin_cu); | |
c38f313d DJ |
10912 | if (attr == NULL) |
10913 | break; | |
cd02d79d PA |
10914 | child_origin_die = follow_die_ref (child_origin_die, attr, |
10915 | &child_origin_cu); | |
c38f313d DJ |
10916 | } |
10917 | ||
d389af10 JK |
10918 | /* According to DWARF3 3.3.8.2 #3 new entries without their abstract |
10919 | counterpart may exist. */ | |
c38f313d | 10920 | if (child_origin_die != child_die) |
d389af10 | 10921 | { |
edb3359d DJ |
10922 | if (child_die->tag != child_origin_die->tag |
10923 | && !(child_die->tag == DW_TAG_inlined_subroutine | |
10924 | && child_origin_die->tag == DW_TAG_subprogram)) | |
d389af10 JK |
10925 | complaint (&symfile_complaints, |
10926 | _("Child DIE 0x%x and its abstract origin 0x%x have " | |
b64f50a1 JK |
10927 | "different tags"), child_die->offset.sect_off, |
10928 | child_origin_die->offset.sect_off); | |
c38f313d DJ |
10929 | if (child_origin_die->parent != origin_die) |
10930 | complaint (&symfile_complaints, | |
10931 | _("Child DIE 0x%x and its abstract origin 0x%x have " | |
b64f50a1 JK |
10932 | "different parents"), child_die->offset.sect_off, |
10933 | child_origin_die->offset.sect_off); | |
c38f313d DJ |
10934 | else |
10935 | *offsets_end++ = child_origin_die->offset; | |
d389af10 JK |
10936 | } |
10937 | child_die = sibling_die (child_die); | |
10938 | } | |
10939 | qsort (offsets, offsets_end - offsets, sizeof (*offsets), | |
10940 | unsigned_int_compar); | |
10941 | for (offsetp = offsets + 1; offsetp < offsets_end; offsetp++) | |
b64f50a1 | 10942 | if (offsetp[-1].sect_off == offsetp->sect_off) |
3e43a32a MS |
10943 | complaint (&symfile_complaints, |
10944 | _("Multiple children of DIE 0x%x refer " | |
10945 | "to DIE 0x%x as their abstract origin"), | |
b64f50a1 | 10946 | die->offset.sect_off, offsetp->sect_off); |
d389af10 JK |
10947 | |
10948 | offsetp = offsets; | |
10949 | origin_child_die = origin_die->child; | |
10950 | while (origin_child_die && origin_child_die->tag) | |
10951 | { | |
10952 | /* Is ORIGIN_CHILD_DIE referenced by any of the DIE children? */ | |
b64f50a1 JK |
10953 | while (offsetp < offsets_end |
10954 | && offsetp->sect_off < origin_child_die->offset.sect_off) | |
d389af10 | 10955 | offsetp++; |
b64f50a1 JK |
10956 | if (offsetp >= offsets_end |
10957 | || offsetp->sect_off > origin_child_die->offset.sect_off) | |
d389af10 JK |
10958 | { |
10959 | /* Found that ORIGIN_CHILD_DIE is really not referenced. */ | |
cd02d79d | 10960 | process_die (origin_child_die, origin_cu); |
d389af10 JK |
10961 | } |
10962 | origin_child_die = sibling_die (origin_child_die); | |
10963 | } | |
cd02d79d | 10964 | origin_cu->list_in_scope = origin_previous_list_in_scope; |
d389af10 JK |
10965 | |
10966 | do_cleanups (cleanups); | |
10967 | } | |
10968 | ||
c906108c | 10969 | static void |
e7c27a73 | 10970 | read_func_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 10971 | { |
e7c27a73 | 10972 | struct objfile *objfile = cu->objfile; |
52f0bd74 | 10973 | struct context_stack *new; |
c906108c SS |
10974 | CORE_ADDR lowpc; |
10975 | CORE_ADDR highpc; | |
10976 | struct die_info *child_die; | |
edb3359d | 10977 | struct attribute *attr, *call_line, *call_file; |
15d034d0 | 10978 | const char *name; |
e142c38c | 10979 | CORE_ADDR baseaddr; |
801e3a5b | 10980 | struct block *block; |
edb3359d | 10981 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
34eaf542 TT |
10982 | VEC (symbolp) *template_args = NULL; |
10983 | struct template_symbol *templ_func = NULL; | |
edb3359d DJ |
10984 | |
10985 | if (inlined_func) | |
10986 | { | |
10987 | /* If we do not have call site information, we can't show the | |
10988 | caller of this inlined function. That's too confusing, so | |
10989 | only use the scope for local variables. */ | |
10990 | call_line = dwarf2_attr (die, DW_AT_call_line, cu); | |
10991 | call_file = dwarf2_attr (die, DW_AT_call_file, cu); | |
10992 | if (call_line == NULL || call_file == NULL) | |
10993 | { | |
10994 | read_lexical_block_scope (die, cu); | |
10995 | return; | |
10996 | } | |
10997 | } | |
c906108c | 10998 | |
e142c38c DJ |
10999 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
11000 | ||
94af9270 | 11001 | name = dwarf2_name (die, cu); |
c906108c | 11002 | |
e8d05480 JB |
11003 | /* Ignore functions with missing or empty names. These are actually |
11004 | illegal according to the DWARF standard. */ | |
11005 | if (name == NULL) | |
11006 | { | |
11007 | complaint (&symfile_complaints, | |
b64f50a1 JK |
11008 | _("missing name for subprogram DIE at %d"), |
11009 | die->offset.sect_off); | |
e8d05480 JB |
11010 | return; |
11011 | } | |
11012 | ||
11013 | /* Ignore functions with missing or invalid low and high pc attributes. */ | |
11014 | if (!dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL)) | |
11015 | { | |
ae4d0c03 PM |
11016 | attr = dwarf2_attr (die, DW_AT_external, cu); |
11017 | if (!attr || !DW_UNSND (attr)) | |
11018 | complaint (&symfile_complaints, | |
3e43a32a MS |
11019 | _("cannot get low and high bounds " |
11020 | "for subprogram DIE at %d"), | |
b64f50a1 | 11021 | die->offset.sect_off); |
e8d05480 JB |
11022 | return; |
11023 | } | |
c906108c SS |
11024 | |
11025 | lowpc += baseaddr; | |
11026 | highpc += baseaddr; | |
11027 | ||
34eaf542 TT |
11028 | /* If we have any template arguments, then we must allocate a |
11029 | different sort of symbol. */ | |
11030 | for (child_die = die->child; child_die; child_die = sibling_die (child_die)) | |
11031 | { | |
11032 | if (child_die->tag == DW_TAG_template_type_param | |
11033 | || child_die->tag == DW_TAG_template_value_param) | |
11034 | { | |
e623cf5d | 11035 | templ_func = allocate_template_symbol (objfile); |
34eaf542 TT |
11036 | templ_func->base.is_cplus_template_function = 1; |
11037 | break; | |
11038 | } | |
11039 | } | |
11040 | ||
c906108c | 11041 | new = push_context (0, lowpc); |
34eaf542 TT |
11042 | new->name = new_symbol_full (die, read_type_die (die, cu), cu, |
11043 | (struct symbol *) templ_func); | |
4c2df51b | 11044 | |
4cecd739 DJ |
11045 | /* If there is a location expression for DW_AT_frame_base, record |
11046 | it. */ | |
e142c38c | 11047 | attr = dwarf2_attr (die, DW_AT_frame_base, cu); |
4c2df51b | 11048 | if (attr) |
f1e6e072 | 11049 | dwarf2_symbol_mark_computed (attr, new->name, cu, 1); |
4c2df51b | 11050 | |
e142c38c | 11051 | cu->list_in_scope = &local_symbols; |
c906108c | 11052 | |
639d11d3 | 11053 | if (die->child != NULL) |
c906108c | 11054 | { |
639d11d3 | 11055 | child_die = die->child; |
c906108c SS |
11056 | while (child_die && child_die->tag) |
11057 | { | |
34eaf542 TT |
11058 | if (child_die->tag == DW_TAG_template_type_param |
11059 | || child_die->tag == DW_TAG_template_value_param) | |
11060 | { | |
11061 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
11062 | ||
f1078f66 DJ |
11063 | if (arg != NULL) |
11064 | VEC_safe_push (symbolp, template_args, arg); | |
34eaf542 TT |
11065 | } |
11066 | else | |
11067 | process_die (child_die, cu); | |
c906108c SS |
11068 | child_die = sibling_die (child_die); |
11069 | } | |
11070 | } | |
11071 | ||
d389af10 JK |
11072 | inherit_abstract_dies (die, cu); |
11073 | ||
4a811a97 UW |
11074 | /* If we have a DW_AT_specification, we might need to import using |
11075 | directives from the context of the specification DIE. See the | |
11076 | comment in determine_prefix. */ | |
11077 | if (cu->language == language_cplus | |
11078 | && dwarf2_attr (die, DW_AT_specification, cu)) | |
11079 | { | |
11080 | struct dwarf2_cu *spec_cu = cu; | |
11081 | struct die_info *spec_die = die_specification (die, &spec_cu); | |
11082 | ||
11083 | while (spec_die) | |
11084 | { | |
11085 | child_die = spec_die->child; | |
11086 | while (child_die && child_die->tag) | |
11087 | { | |
11088 | if (child_die->tag == DW_TAG_imported_module) | |
11089 | process_die (child_die, spec_cu); | |
11090 | child_die = sibling_die (child_die); | |
11091 | } | |
11092 | ||
11093 | /* In some cases, GCC generates specification DIEs that | |
11094 | themselves contain DW_AT_specification attributes. */ | |
11095 | spec_die = die_specification (spec_die, &spec_cu); | |
11096 | } | |
11097 | } | |
11098 | ||
c906108c SS |
11099 | new = pop_context (); |
11100 | /* Make a block for the local symbols within. */ | |
801e3a5b JB |
11101 | block = finish_block (new->name, &local_symbols, new->old_blocks, |
11102 | lowpc, highpc, objfile); | |
11103 | ||
df8a16a1 | 11104 | /* For C++, set the block's scope. */ |
195a3f6c | 11105 | if ((cu->language == language_cplus || cu->language == language_fortran) |
4d4ec4e5 | 11106 | && cu->processing_has_namespace_info) |
195a3f6c TT |
11107 | block_set_scope (block, determine_prefix (die, cu), |
11108 | &objfile->objfile_obstack); | |
df8a16a1 | 11109 | |
801e3a5b JB |
11110 | /* If we have address ranges, record them. */ |
11111 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
6e70227d | 11112 | |
34eaf542 TT |
11113 | /* Attach template arguments to function. */ |
11114 | if (! VEC_empty (symbolp, template_args)) | |
11115 | { | |
11116 | gdb_assert (templ_func != NULL); | |
11117 | ||
11118 | templ_func->n_template_arguments = VEC_length (symbolp, template_args); | |
11119 | templ_func->template_arguments | |
11120 | = obstack_alloc (&objfile->objfile_obstack, | |
11121 | (templ_func->n_template_arguments | |
11122 | * sizeof (struct symbol *))); | |
11123 | memcpy (templ_func->template_arguments, | |
11124 | VEC_address (symbolp, template_args), | |
11125 | (templ_func->n_template_arguments * sizeof (struct symbol *))); | |
11126 | VEC_free (symbolp, template_args); | |
11127 | } | |
11128 | ||
208d8187 JB |
11129 | /* In C++, we can have functions nested inside functions (e.g., when |
11130 | a function declares a class that has methods). This means that | |
11131 | when we finish processing a function scope, we may need to go | |
11132 | back to building a containing block's symbol lists. */ | |
11133 | local_symbols = new->locals; | |
27aa8d6a | 11134 | using_directives = new->using_directives; |
208d8187 | 11135 | |
921e78cf JB |
11136 | /* If we've finished processing a top-level function, subsequent |
11137 | symbols go in the file symbol list. */ | |
11138 | if (outermost_context_p ()) | |
e142c38c | 11139 | cu->list_in_scope = &file_symbols; |
c906108c SS |
11140 | } |
11141 | ||
11142 | /* Process all the DIES contained within a lexical block scope. Start | |
11143 | a new scope, process the dies, and then close the scope. */ | |
11144 | ||
11145 | static void | |
e7c27a73 | 11146 | read_lexical_block_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 11147 | { |
e7c27a73 | 11148 | struct objfile *objfile = cu->objfile; |
52f0bd74 | 11149 | struct context_stack *new; |
c906108c SS |
11150 | CORE_ADDR lowpc, highpc; |
11151 | struct die_info *child_die; | |
e142c38c DJ |
11152 | CORE_ADDR baseaddr; |
11153 | ||
11154 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c SS |
11155 | |
11156 | /* Ignore blocks with missing or invalid low and high pc attributes. */ | |
af34e669 DJ |
11157 | /* ??? Perhaps consider discontiguous blocks defined by DW_AT_ranges |
11158 | as multiple lexical blocks? Handling children in a sane way would | |
6e70227d | 11159 | be nasty. Might be easier to properly extend generic blocks to |
af34e669 | 11160 | describe ranges. */ |
d85a05f0 | 11161 | if (!dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL)) |
c906108c SS |
11162 | return; |
11163 | lowpc += baseaddr; | |
11164 | highpc += baseaddr; | |
11165 | ||
11166 | push_context (0, lowpc); | |
639d11d3 | 11167 | if (die->child != NULL) |
c906108c | 11168 | { |
639d11d3 | 11169 | child_die = die->child; |
c906108c SS |
11170 | while (child_die && child_die->tag) |
11171 | { | |
e7c27a73 | 11172 | process_die (child_die, cu); |
c906108c SS |
11173 | child_die = sibling_die (child_die); |
11174 | } | |
11175 | } | |
11176 | new = pop_context (); | |
11177 | ||
8540c487 | 11178 | if (local_symbols != NULL || using_directives != NULL) |
c906108c | 11179 | { |
801e3a5b JB |
11180 | struct block *block |
11181 | = finish_block (0, &local_symbols, new->old_blocks, new->start_addr, | |
11182 | highpc, objfile); | |
11183 | ||
11184 | /* Note that recording ranges after traversing children, as we | |
11185 | do here, means that recording a parent's ranges entails | |
11186 | walking across all its children's ranges as they appear in | |
11187 | the address map, which is quadratic behavior. | |
11188 | ||
11189 | It would be nicer to record the parent's ranges before | |
11190 | traversing its children, simply overriding whatever you find | |
11191 | there. But since we don't even decide whether to create a | |
11192 | block until after we've traversed its children, that's hard | |
11193 | to do. */ | |
11194 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
c906108c SS |
11195 | } |
11196 | local_symbols = new->locals; | |
27aa8d6a | 11197 | using_directives = new->using_directives; |
c906108c SS |
11198 | } |
11199 | ||
96408a79 SA |
11200 | /* Read in DW_TAG_GNU_call_site and insert it to CU->call_site_htab. */ |
11201 | ||
11202 | static void | |
11203 | read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu) | |
11204 | { | |
11205 | struct objfile *objfile = cu->objfile; | |
11206 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
11207 | CORE_ADDR pc, baseaddr; | |
11208 | struct attribute *attr; | |
11209 | struct call_site *call_site, call_site_local; | |
11210 | void **slot; | |
11211 | int nparams; | |
11212 | struct die_info *child_die; | |
11213 | ||
11214 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
11215 | ||
11216 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
11217 | if (!attr) | |
11218 | { | |
11219 | complaint (&symfile_complaints, | |
11220 | _("missing DW_AT_low_pc for DW_TAG_GNU_call_site " | |
11221 | "DIE 0x%x [in module %s]"), | |
4262abfb | 11222 | die->offset.sect_off, objfile_name (objfile)); |
96408a79 SA |
11223 | return; |
11224 | } | |
11225 | pc = DW_ADDR (attr) + baseaddr; | |
11226 | ||
11227 | if (cu->call_site_htab == NULL) | |
11228 | cu->call_site_htab = htab_create_alloc_ex (16, core_addr_hash, core_addr_eq, | |
11229 | NULL, &objfile->objfile_obstack, | |
11230 | hashtab_obstack_allocate, NULL); | |
11231 | call_site_local.pc = pc; | |
11232 | slot = htab_find_slot (cu->call_site_htab, &call_site_local, INSERT); | |
11233 | if (*slot != NULL) | |
11234 | { | |
11235 | complaint (&symfile_complaints, | |
11236 | _("Duplicate PC %s for DW_TAG_GNU_call_site " | |
11237 | "DIE 0x%x [in module %s]"), | |
4262abfb JK |
11238 | paddress (gdbarch, pc), die->offset.sect_off, |
11239 | objfile_name (objfile)); | |
96408a79 SA |
11240 | return; |
11241 | } | |
11242 | ||
11243 | /* Count parameters at the caller. */ | |
11244 | ||
11245 | nparams = 0; | |
11246 | for (child_die = die->child; child_die && child_die->tag; | |
11247 | child_die = sibling_die (child_die)) | |
11248 | { | |
11249 | if (child_die->tag != DW_TAG_GNU_call_site_parameter) | |
11250 | { | |
11251 | complaint (&symfile_complaints, | |
11252 | _("Tag %d is not DW_TAG_GNU_call_site_parameter in " | |
11253 | "DW_TAG_GNU_call_site child DIE 0x%x [in module %s]"), | |
4262abfb JK |
11254 | child_die->tag, child_die->offset.sect_off, |
11255 | objfile_name (objfile)); | |
96408a79 SA |
11256 | continue; |
11257 | } | |
11258 | ||
11259 | nparams++; | |
11260 | } | |
11261 | ||
11262 | call_site = obstack_alloc (&objfile->objfile_obstack, | |
11263 | (sizeof (*call_site) | |
11264 | + (sizeof (*call_site->parameter) | |
11265 | * (nparams - 1)))); | |
11266 | *slot = call_site; | |
11267 | memset (call_site, 0, sizeof (*call_site) - sizeof (*call_site->parameter)); | |
11268 | call_site->pc = pc; | |
11269 | ||
11270 | if (dwarf2_flag_true_p (die, DW_AT_GNU_tail_call, cu)) | |
11271 | { | |
11272 | struct die_info *func_die; | |
11273 | ||
11274 | /* Skip also over DW_TAG_inlined_subroutine. */ | |
11275 | for (func_die = die->parent; | |
11276 | func_die && func_die->tag != DW_TAG_subprogram | |
11277 | && func_die->tag != DW_TAG_subroutine_type; | |
11278 | func_die = func_die->parent); | |
11279 | ||
11280 | /* DW_AT_GNU_all_call_sites is a superset | |
11281 | of DW_AT_GNU_all_tail_call_sites. */ | |
11282 | if (func_die | |
11283 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_call_sites, cu) | |
11284 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_tail_call_sites, cu)) | |
11285 | { | |
11286 | /* TYPE_TAIL_CALL_LIST is not interesting in functions where it is | |
11287 | not complete. But keep CALL_SITE for look ups via call_site_htab, | |
11288 | both the initial caller containing the real return address PC and | |
11289 | the final callee containing the current PC of a chain of tail | |
11290 | calls do not need to have the tail call list complete. But any | |
11291 | function candidate for a virtual tail call frame searched via | |
11292 | TYPE_TAIL_CALL_LIST must have the tail call list complete to be | |
11293 | determined unambiguously. */ | |
11294 | } | |
11295 | else | |
11296 | { | |
11297 | struct type *func_type = NULL; | |
11298 | ||
11299 | if (func_die) | |
11300 | func_type = get_die_type (func_die, cu); | |
11301 | if (func_type != NULL) | |
11302 | { | |
11303 | gdb_assert (TYPE_CODE (func_type) == TYPE_CODE_FUNC); | |
11304 | ||
11305 | /* Enlist this call site to the function. */ | |
11306 | call_site->tail_call_next = TYPE_TAIL_CALL_LIST (func_type); | |
11307 | TYPE_TAIL_CALL_LIST (func_type) = call_site; | |
11308 | } | |
11309 | else | |
11310 | complaint (&symfile_complaints, | |
11311 | _("Cannot find function owning DW_TAG_GNU_call_site " | |
11312 | "DIE 0x%x [in module %s]"), | |
4262abfb | 11313 | die->offset.sect_off, objfile_name (objfile)); |
96408a79 SA |
11314 | } |
11315 | } | |
11316 | ||
11317 | attr = dwarf2_attr (die, DW_AT_GNU_call_site_target, cu); | |
11318 | if (attr == NULL) | |
11319 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
11320 | SET_FIELD_DWARF_BLOCK (call_site->target, NULL); | |
11321 | if (!attr || (attr_form_is_block (attr) && DW_BLOCK (attr)->size == 0)) | |
11322 | /* Keep NULL DWARF_BLOCK. */; | |
11323 | else if (attr_form_is_block (attr)) | |
11324 | { | |
11325 | struct dwarf2_locexpr_baton *dlbaton; | |
11326 | ||
11327 | dlbaton = obstack_alloc (&objfile->objfile_obstack, sizeof (*dlbaton)); | |
11328 | dlbaton->data = DW_BLOCK (attr)->data; | |
11329 | dlbaton->size = DW_BLOCK (attr)->size; | |
11330 | dlbaton->per_cu = cu->per_cu; | |
11331 | ||
11332 | SET_FIELD_DWARF_BLOCK (call_site->target, dlbaton); | |
11333 | } | |
7771576e | 11334 | else if (attr_form_is_ref (attr)) |
96408a79 | 11335 | { |
96408a79 SA |
11336 | struct dwarf2_cu *target_cu = cu; |
11337 | struct die_info *target_die; | |
11338 | ||
ac9ec31b | 11339 | target_die = follow_die_ref (die, attr, &target_cu); |
96408a79 SA |
11340 | gdb_assert (target_cu->objfile == objfile); |
11341 | if (die_is_declaration (target_die, target_cu)) | |
11342 | { | |
9112db09 JK |
11343 | const char *target_physname = NULL; |
11344 | struct attribute *target_attr; | |
11345 | ||
11346 | /* Prefer the mangled name; otherwise compute the demangled one. */ | |
11347 | target_attr = dwarf2_attr (target_die, DW_AT_linkage_name, target_cu); | |
11348 | if (target_attr == NULL) | |
11349 | target_attr = dwarf2_attr (target_die, DW_AT_MIPS_linkage_name, | |
11350 | target_cu); | |
11351 | if (target_attr != NULL && DW_STRING (target_attr) != NULL) | |
11352 | target_physname = DW_STRING (target_attr); | |
11353 | else | |
11354 | target_physname = dwarf2_physname (NULL, target_die, target_cu); | |
96408a79 SA |
11355 | if (target_physname == NULL) |
11356 | complaint (&symfile_complaints, | |
11357 | _("DW_AT_GNU_call_site_target target DIE has invalid " | |
11358 | "physname, for referencing DIE 0x%x [in module %s]"), | |
4262abfb | 11359 | die->offset.sect_off, objfile_name (objfile)); |
96408a79 | 11360 | else |
7d455152 | 11361 | SET_FIELD_PHYSNAME (call_site->target, target_physname); |
96408a79 SA |
11362 | } |
11363 | else | |
11364 | { | |
11365 | CORE_ADDR lowpc; | |
11366 | ||
11367 | /* DW_AT_entry_pc should be preferred. */ | |
11368 | if (!dwarf2_get_pc_bounds (target_die, &lowpc, NULL, target_cu, NULL)) | |
11369 | complaint (&symfile_complaints, | |
11370 | _("DW_AT_GNU_call_site_target target DIE has invalid " | |
11371 | "low pc, for referencing DIE 0x%x [in module %s]"), | |
4262abfb | 11372 | die->offset.sect_off, objfile_name (objfile)); |
96408a79 SA |
11373 | else |
11374 | SET_FIELD_PHYSADDR (call_site->target, lowpc + baseaddr); | |
11375 | } | |
11376 | } | |
11377 | else | |
11378 | complaint (&symfile_complaints, | |
11379 | _("DW_TAG_GNU_call_site DW_AT_GNU_call_site_target is neither " | |
11380 | "block nor reference, for DIE 0x%x [in module %s]"), | |
4262abfb | 11381 | die->offset.sect_off, objfile_name (objfile)); |
96408a79 SA |
11382 | |
11383 | call_site->per_cu = cu->per_cu; | |
11384 | ||
11385 | for (child_die = die->child; | |
11386 | child_die && child_die->tag; | |
11387 | child_die = sibling_die (child_die)) | |
11388 | { | |
96408a79 | 11389 | struct call_site_parameter *parameter; |
1788b2d3 | 11390 | struct attribute *loc, *origin; |
96408a79 SA |
11391 | |
11392 | if (child_die->tag != DW_TAG_GNU_call_site_parameter) | |
11393 | { | |
11394 | /* Already printed the complaint above. */ | |
11395 | continue; | |
11396 | } | |
11397 | ||
11398 | gdb_assert (call_site->parameter_count < nparams); | |
11399 | parameter = &call_site->parameter[call_site->parameter_count]; | |
11400 | ||
1788b2d3 JK |
11401 | /* DW_AT_location specifies the register number or DW_AT_abstract_origin |
11402 | specifies DW_TAG_formal_parameter. Value of the data assumed for the | |
11403 | register is contained in DW_AT_GNU_call_site_value. */ | |
96408a79 | 11404 | |
24c5c679 | 11405 | loc = dwarf2_attr (child_die, DW_AT_location, cu); |
1788b2d3 | 11406 | origin = dwarf2_attr (child_die, DW_AT_abstract_origin, cu); |
7771576e | 11407 | if (loc == NULL && origin != NULL && attr_form_is_ref (origin)) |
1788b2d3 JK |
11408 | { |
11409 | sect_offset offset; | |
11410 | ||
11411 | parameter->kind = CALL_SITE_PARAMETER_PARAM_OFFSET; | |
11412 | offset = dwarf2_get_ref_die_offset (origin); | |
d76b7dbc JK |
11413 | if (!offset_in_cu_p (&cu->header, offset)) |
11414 | { | |
11415 | /* As DW_OP_GNU_parameter_ref uses CU-relative offset this | |
11416 | binding can be done only inside one CU. Such referenced DIE | |
11417 | therefore cannot be even moved to DW_TAG_partial_unit. */ | |
11418 | complaint (&symfile_complaints, | |
11419 | _("DW_AT_abstract_origin offset is not in CU for " | |
11420 | "DW_TAG_GNU_call_site child DIE 0x%x " | |
11421 | "[in module %s]"), | |
4262abfb | 11422 | child_die->offset.sect_off, objfile_name (objfile)); |
d76b7dbc JK |
11423 | continue; |
11424 | } | |
1788b2d3 JK |
11425 | parameter->u.param_offset.cu_off = (offset.sect_off |
11426 | - cu->header.offset.sect_off); | |
11427 | } | |
11428 | else if (loc == NULL || origin != NULL || !attr_form_is_block (loc)) | |
96408a79 SA |
11429 | { |
11430 | complaint (&symfile_complaints, | |
11431 | _("No DW_FORM_block* DW_AT_location for " | |
11432 | "DW_TAG_GNU_call_site child DIE 0x%x [in module %s]"), | |
4262abfb | 11433 | child_die->offset.sect_off, objfile_name (objfile)); |
96408a79 SA |
11434 | continue; |
11435 | } | |
24c5c679 | 11436 | else |
96408a79 | 11437 | { |
24c5c679 JK |
11438 | parameter->u.dwarf_reg = dwarf_block_to_dwarf_reg |
11439 | (DW_BLOCK (loc)->data, &DW_BLOCK (loc)->data[DW_BLOCK (loc)->size]); | |
11440 | if (parameter->u.dwarf_reg != -1) | |
11441 | parameter->kind = CALL_SITE_PARAMETER_DWARF_REG; | |
11442 | else if (dwarf_block_to_sp_offset (gdbarch, DW_BLOCK (loc)->data, | |
11443 | &DW_BLOCK (loc)->data[DW_BLOCK (loc)->size], | |
11444 | ¶meter->u.fb_offset)) | |
11445 | parameter->kind = CALL_SITE_PARAMETER_FB_OFFSET; | |
11446 | else | |
11447 | { | |
11448 | complaint (&symfile_complaints, | |
11449 | _("Only single DW_OP_reg or DW_OP_fbreg is supported " | |
11450 | "for DW_FORM_block* DW_AT_location is supported for " | |
11451 | "DW_TAG_GNU_call_site child DIE 0x%x " | |
11452 | "[in module %s]"), | |
4262abfb | 11453 | child_die->offset.sect_off, objfile_name (objfile)); |
24c5c679 JK |
11454 | continue; |
11455 | } | |
96408a79 SA |
11456 | } |
11457 | ||
11458 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_value, cu); | |
11459 | if (!attr_form_is_block (attr)) | |
11460 | { | |
11461 | complaint (&symfile_complaints, | |
11462 | _("No DW_FORM_block* DW_AT_GNU_call_site_value for " | |
11463 | "DW_TAG_GNU_call_site child DIE 0x%x [in module %s]"), | |
4262abfb | 11464 | child_die->offset.sect_off, objfile_name (objfile)); |
96408a79 SA |
11465 | continue; |
11466 | } | |
11467 | parameter->value = DW_BLOCK (attr)->data; | |
11468 | parameter->value_size = DW_BLOCK (attr)->size; | |
11469 | ||
11470 | /* Parameters are not pre-cleared by memset above. */ | |
11471 | parameter->data_value = NULL; | |
11472 | parameter->data_value_size = 0; | |
11473 | call_site->parameter_count++; | |
11474 | ||
11475 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_data_value, cu); | |
11476 | if (attr) | |
11477 | { | |
11478 | if (!attr_form_is_block (attr)) | |
11479 | complaint (&symfile_complaints, | |
11480 | _("No DW_FORM_block* DW_AT_GNU_call_site_data_value for " | |
11481 | "DW_TAG_GNU_call_site child DIE 0x%x [in module %s]"), | |
4262abfb | 11482 | child_die->offset.sect_off, objfile_name (objfile)); |
96408a79 SA |
11483 | else |
11484 | { | |
11485 | parameter->data_value = DW_BLOCK (attr)->data; | |
11486 | parameter->data_value_size = DW_BLOCK (attr)->size; | |
11487 | } | |
11488 | } | |
11489 | } | |
11490 | } | |
11491 | ||
43039443 | 11492 | /* Get low and high pc attributes from DW_AT_ranges attribute value OFFSET. |
ff013f42 JK |
11493 | Return 1 if the attributes are present and valid, otherwise, return 0. |
11494 | If RANGES_PST is not NULL we should setup `objfile->psymtabs_addrmap'. */ | |
43039443 JK |
11495 | |
11496 | static int | |
11497 | dwarf2_ranges_read (unsigned offset, CORE_ADDR *low_return, | |
ff013f42 JK |
11498 | CORE_ADDR *high_return, struct dwarf2_cu *cu, |
11499 | struct partial_symtab *ranges_pst) | |
43039443 JK |
11500 | { |
11501 | struct objfile *objfile = cu->objfile; | |
11502 | struct comp_unit_head *cu_header = &cu->header; | |
11503 | bfd *obfd = objfile->obfd; | |
11504 | unsigned int addr_size = cu_header->addr_size; | |
11505 | CORE_ADDR mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
11506 | /* Base address selection entry. */ | |
11507 | CORE_ADDR base; | |
11508 | int found_base; | |
11509 | unsigned int dummy; | |
d521ce57 | 11510 | const gdb_byte *buffer; |
43039443 JK |
11511 | CORE_ADDR marker; |
11512 | int low_set; | |
11513 | CORE_ADDR low = 0; | |
11514 | CORE_ADDR high = 0; | |
ff013f42 | 11515 | CORE_ADDR baseaddr; |
43039443 | 11516 | |
d00adf39 DE |
11517 | found_base = cu->base_known; |
11518 | base = cu->base_address; | |
43039443 | 11519 | |
be391dca | 11520 | dwarf2_read_section (objfile, &dwarf2_per_objfile->ranges); |
dce234bc | 11521 | if (offset >= dwarf2_per_objfile->ranges.size) |
43039443 JK |
11522 | { |
11523 | complaint (&symfile_complaints, | |
11524 | _("Offset %d out of bounds for DW_AT_ranges attribute"), | |
11525 | offset); | |
11526 | return 0; | |
11527 | } | |
dce234bc | 11528 | buffer = dwarf2_per_objfile->ranges.buffer + offset; |
43039443 JK |
11529 | |
11530 | /* Read in the largest possible address. */ | |
11531 | marker = read_address (obfd, buffer, cu, &dummy); | |
11532 | if ((marker & mask) == mask) | |
11533 | { | |
11534 | /* If we found the largest possible address, then | |
11535 | read the base address. */ | |
11536 | base = read_address (obfd, buffer + addr_size, cu, &dummy); | |
11537 | buffer += 2 * addr_size; | |
11538 | offset += 2 * addr_size; | |
11539 | found_base = 1; | |
11540 | } | |
11541 | ||
11542 | low_set = 0; | |
11543 | ||
e7030f15 | 11544 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
ff013f42 | 11545 | |
43039443 JK |
11546 | while (1) |
11547 | { | |
11548 | CORE_ADDR range_beginning, range_end; | |
11549 | ||
11550 | range_beginning = read_address (obfd, buffer, cu, &dummy); | |
11551 | buffer += addr_size; | |
11552 | range_end = read_address (obfd, buffer, cu, &dummy); | |
11553 | buffer += addr_size; | |
11554 | offset += 2 * addr_size; | |
11555 | ||
11556 | /* An end of list marker is a pair of zero addresses. */ | |
11557 | if (range_beginning == 0 && range_end == 0) | |
11558 | /* Found the end of list entry. */ | |
11559 | break; | |
11560 | ||
11561 | /* Each base address selection entry is a pair of 2 values. | |
11562 | The first is the largest possible address, the second is | |
11563 | the base address. Check for a base address here. */ | |
11564 | if ((range_beginning & mask) == mask) | |
11565 | { | |
11566 | /* If we found the largest possible address, then | |
11567 | read the base address. */ | |
11568 | base = read_address (obfd, buffer + addr_size, cu, &dummy); | |
11569 | found_base = 1; | |
11570 | continue; | |
11571 | } | |
11572 | ||
11573 | if (!found_base) | |
11574 | { | |
11575 | /* We have no valid base address for the ranges | |
11576 | data. */ | |
11577 | complaint (&symfile_complaints, | |
11578 | _("Invalid .debug_ranges data (no base address)")); | |
11579 | return 0; | |
11580 | } | |
11581 | ||
9277c30c UW |
11582 | if (range_beginning > range_end) |
11583 | { | |
11584 | /* Inverted range entries are invalid. */ | |
11585 | complaint (&symfile_complaints, | |
11586 | _("Invalid .debug_ranges data (inverted range)")); | |
11587 | return 0; | |
11588 | } | |
11589 | ||
11590 | /* Empty range entries have no effect. */ | |
11591 | if (range_beginning == range_end) | |
11592 | continue; | |
11593 | ||
43039443 JK |
11594 | range_beginning += base; |
11595 | range_end += base; | |
11596 | ||
01093045 DE |
11597 | /* A not-uncommon case of bad debug info. |
11598 | Don't pollute the addrmap with bad data. */ | |
11599 | if (range_beginning + baseaddr == 0 | |
11600 | && !dwarf2_per_objfile->has_section_at_zero) | |
11601 | { | |
11602 | complaint (&symfile_complaints, | |
11603 | _(".debug_ranges entry has start address of zero" | |
4262abfb | 11604 | " [in module %s]"), objfile_name (objfile)); |
01093045 DE |
11605 | continue; |
11606 | } | |
11607 | ||
9277c30c | 11608 | if (ranges_pst != NULL) |
ff013f42 | 11609 | addrmap_set_empty (objfile->psymtabs_addrmap, |
3e43a32a MS |
11610 | range_beginning + baseaddr, |
11611 | range_end - 1 + baseaddr, | |
ff013f42 JK |
11612 | ranges_pst); |
11613 | ||
43039443 JK |
11614 | /* FIXME: This is recording everything as a low-high |
11615 | segment of consecutive addresses. We should have a | |
11616 | data structure for discontiguous block ranges | |
11617 | instead. */ | |
11618 | if (! low_set) | |
11619 | { | |
11620 | low = range_beginning; | |
11621 | high = range_end; | |
11622 | low_set = 1; | |
11623 | } | |
11624 | else | |
11625 | { | |
11626 | if (range_beginning < low) | |
11627 | low = range_beginning; | |
11628 | if (range_end > high) | |
11629 | high = range_end; | |
11630 | } | |
11631 | } | |
11632 | ||
11633 | if (! low_set) | |
11634 | /* If the first entry is an end-of-list marker, the range | |
11635 | describes an empty scope, i.e. no instructions. */ | |
11636 | return 0; | |
11637 | ||
11638 | if (low_return) | |
11639 | *low_return = low; | |
11640 | if (high_return) | |
11641 | *high_return = high; | |
11642 | return 1; | |
11643 | } | |
11644 | ||
af34e669 DJ |
11645 | /* Get low and high pc attributes from a die. Return 1 if the attributes |
11646 | are present and valid, otherwise, return 0. Return -1 if the range is | |
11647 | discontinuous, i.e. derived from DW_AT_ranges information. */ | |
380bca97 | 11648 | |
c906108c | 11649 | static int |
af34e669 | 11650 | dwarf2_get_pc_bounds (struct die_info *die, CORE_ADDR *lowpc, |
d85a05f0 DJ |
11651 | CORE_ADDR *highpc, struct dwarf2_cu *cu, |
11652 | struct partial_symtab *pst) | |
c906108c SS |
11653 | { |
11654 | struct attribute *attr; | |
91da1414 | 11655 | struct attribute *attr_high; |
af34e669 DJ |
11656 | CORE_ADDR low = 0; |
11657 | CORE_ADDR high = 0; | |
11658 | int ret = 0; | |
c906108c | 11659 | |
91da1414 MW |
11660 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
11661 | if (attr_high) | |
af34e669 | 11662 | { |
e142c38c | 11663 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
af34e669 | 11664 | if (attr) |
91da1414 MW |
11665 | { |
11666 | low = DW_ADDR (attr); | |
3019eac3 DE |
11667 | if (attr_high->form == DW_FORM_addr |
11668 | || attr_high->form == DW_FORM_GNU_addr_index) | |
91da1414 MW |
11669 | high = DW_ADDR (attr_high); |
11670 | else | |
11671 | high = low + DW_UNSND (attr_high); | |
11672 | } | |
af34e669 DJ |
11673 | else |
11674 | /* Found high w/o low attribute. */ | |
11675 | return 0; | |
11676 | ||
11677 | /* Found consecutive range of addresses. */ | |
11678 | ret = 1; | |
11679 | } | |
c906108c | 11680 | else |
af34e669 | 11681 | { |
e142c38c | 11682 | attr = dwarf2_attr (die, DW_AT_ranges, cu); |
af34e669 DJ |
11683 | if (attr != NULL) |
11684 | { | |
ab435259 DE |
11685 | /* DW_AT_ranges_base does not apply to DIEs from the DWO skeleton. |
11686 | We take advantage of the fact that DW_AT_ranges does not appear | |
11687 | in DW_TAG_compile_unit of DWO files. */ | |
11688 | int need_ranges_base = die->tag != DW_TAG_compile_unit; | |
11689 | unsigned int ranges_offset = (DW_UNSND (attr) | |
11690 | + (need_ranges_base | |
11691 | ? cu->ranges_base | |
11692 | : 0)); | |
2e3cf129 | 11693 | |
af34e669 | 11694 | /* Value of the DW_AT_ranges attribute is the offset in the |
a604369a | 11695 | .debug_ranges section. */ |
2e3cf129 | 11696 | if (!dwarf2_ranges_read (ranges_offset, &low, &high, cu, pst)) |
af34e669 | 11697 | return 0; |
43039443 | 11698 | /* Found discontinuous range of addresses. */ |
af34e669 DJ |
11699 | ret = -1; |
11700 | } | |
11701 | } | |
c906108c | 11702 | |
9373cf26 JK |
11703 | /* read_partial_die has also the strict LOW < HIGH requirement. */ |
11704 | if (high <= low) | |
c906108c SS |
11705 | return 0; |
11706 | ||
11707 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
11708 | eliminate duplicate copies of functions and vtables and such. | |
11709 | The linker will arbitrarily choose one and discard the others. | |
11710 | The AT_*_pc values for such functions refer to local labels in | |
11711 | these sections. If the section from that file was discarded, the | |
11712 | labels are not in the output, so the relocs get a value of 0. | |
11713 | If this is a discarded function, mark the pc bounds as invalid, | |
11714 | so that GDB will ignore it. */ | |
72dca2f5 | 11715 | if (low == 0 && !dwarf2_per_objfile->has_section_at_zero) |
c906108c SS |
11716 | return 0; |
11717 | ||
11718 | *lowpc = low; | |
96408a79 SA |
11719 | if (highpc) |
11720 | *highpc = high; | |
af34e669 | 11721 | return ret; |
c906108c SS |
11722 | } |
11723 | ||
b084d499 JB |
11724 | /* Assuming that DIE represents a subprogram DIE or a lexical block, get |
11725 | its low and high PC addresses. Do nothing if these addresses could not | |
11726 | be determined. Otherwise, set LOWPC to the low address if it is smaller, | |
11727 | and HIGHPC to the high address if greater than HIGHPC. */ | |
11728 | ||
11729 | static void | |
11730 | dwarf2_get_subprogram_pc_bounds (struct die_info *die, | |
11731 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
11732 | struct dwarf2_cu *cu) | |
11733 | { | |
11734 | CORE_ADDR low, high; | |
11735 | struct die_info *child = die->child; | |
11736 | ||
d85a05f0 | 11737 | if (dwarf2_get_pc_bounds (die, &low, &high, cu, NULL)) |
b084d499 JB |
11738 | { |
11739 | *lowpc = min (*lowpc, low); | |
11740 | *highpc = max (*highpc, high); | |
11741 | } | |
11742 | ||
11743 | /* If the language does not allow nested subprograms (either inside | |
11744 | subprograms or lexical blocks), we're done. */ | |
11745 | if (cu->language != language_ada) | |
11746 | return; | |
6e70227d | 11747 | |
b084d499 JB |
11748 | /* Check all the children of the given DIE. If it contains nested |
11749 | subprograms, then check their pc bounds. Likewise, we need to | |
11750 | check lexical blocks as well, as they may also contain subprogram | |
11751 | definitions. */ | |
11752 | while (child && child->tag) | |
11753 | { | |
11754 | if (child->tag == DW_TAG_subprogram | |
11755 | || child->tag == DW_TAG_lexical_block) | |
11756 | dwarf2_get_subprogram_pc_bounds (child, lowpc, highpc, cu); | |
11757 | child = sibling_die (child); | |
11758 | } | |
11759 | } | |
11760 | ||
fae299cd DC |
11761 | /* Get the low and high pc's represented by the scope DIE, and store |
11762 | them in *LOWPC and *HIGHPC. If the correct values can't be | |
11763 | determined, set *LOWPC to -1 and *HIGHPC to 0. */ | |
11764 | ||
11765 | static void | |
11766 | get_scope_pc_bounds (struct die_info *die, | |
11767 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
11768 | struct dwarf2_cu *cu) | |
11769 | { | |
11770 | CORE_ADDR best_low = (CORE_ADDR) -1; | |
11771 | CORE_ADDR best_high = (CORE_ADDR) 0; | |
11772 | CORE_ADDR current_low, current_high; | |
11773 | ||
d85a05f0 | 11774 | if (dwarf2_get_pc_bounds (die, ¤t_low, ¤t_high, cu, NULL)) |
fae299cd DC |
11775 | { |
11776 | best_low = current_low; | |
11777 | best_high = current_high; | |
11778 | } | |
11779 | else | |
11780 | { | |
11781 | struct die_info *child = die->child; | |
11782 | ||
11783 | while (child && child->tag) | |
11784 | { | |
11785 | switch (child->tag) { | |
11786 | case DW_TAG_subprogram: | |
b084d499 | 11787 | dwarf2_get_subprogram_pc_bounds (child, &best_low, &best_high, cu); |
fae299cd DC |
11788 | break; |
11789 | case DW_TAG_namespace: | |
f55ee35c | 11790 | case DW_TAG_module: |
fae299cd DC |
11791 | /* FIXME: carlton/2004-01-16: Should we do this for |
11792 | DW_TAG_class_type/DW_TAG_structure_type, too? I think | |
11793 | that current GCC's always emit the DIEs corresponding | |
11794 | to definitions of methods of classes as children of a | |
11795 | DW_TAG_compile_unit or DW_TAG_namespace (as opposed to | |
11796 | the DIEs giving the declarations, which could be | |
11797 | anywhere). But I don't see any reason why the | |
11798 | standards says that they have to be there. */ | |
11799 | get_scope_pc_bounds (child, ¤t_low, ¤t_high, cu); | |
11800 | ||
11801 | if (current_low != ((CORE_ADDR) -1)) | |
11802 | { | |
11803 | best_low = min (best_low, current_low); | |
11804 | best_high = max (best_high, current_high); | |
11805 | } | |
11806 | break; | |
11807 | default: | |
0963b4bd | 11808 | /* Ignore. */ |
fae299cd DC |
11809 | break; |
11810 | } | |
11811 | ||
11812 | child = sibling_die (child); | |
11813 | } | |
11814 | } | |
11815 | ||
11816 | *lowpc = best_low; | |
11817 | *highpc = best_high; | |
11818 | } | |
11819 | ||
801e3a5b JB |
11820 | /* Record the address ranges for BLOCK, offset by BASEADDR, as given |
11821 | in DIE. */ | |
380bca97 | 11822 | |
801e3a5b JB |
11823 | static void |
11824 | dwarf2_record_block_ranges (struct die_info *die, struct block *block, | |
11825 | CORE_ADDR baseaddr, struct dwarf2_cu *cu) | |
11826 | { | |
bb5ed363 | 11827 | struct objfile *objfile = cu->objfile; |
801e3a5b | 11828 | struct attribute *attr; |
91da1414 | 11829 | struct attribute *attr_high; |
801e3a5b | 11830 | |
91da1414 MW |
11831 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
11832 | if (attr_high) | |
801e3a5b | 11833 | { |
801e3a5b JB |
11834 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
11835 | if (attr) | |
11836 | { | |
11837 | CORE_ADDR low = DW_ADDR (attr); | |
91da1414 | 11838 | CORE_ADDR high; |
3019eac3 DE |
11839 | if (attr_high->form == DW_FORM_addr |
11840 | || attr_high->form == DW_FORM_GNU_addr_index) | |
91da1414 MW |
11841 | high = DW_ADDR (attr_high); |
11842 | else | |
11843 | high = low + DW_UNSND (attr_high); | |
9a619af0 | 11844 | |
801e3a5b JB |
11845 | record_block_range (block, baseaddr + low, baseaddr + high - 1); |
11846 | } | |
11847 | } | |
11848 | ||
11849 | attr = dwarf2_attr (die, DW_AT_ranges, cu); | |
11850 | if (attr) | |
11851 | { | |
bb5ed363 | 11852 | bfd *obfd = objfile->obfd; |
ab435259 DE |
11853 | /* DW_AT_ranges_base does not apply to DIEs from the DWO skeleton. |
11854 | We take advantage of the fact that DW_AT_ranges does not appear | |
11855 | in DW_TAG_compile_unit of DWO files. */ | |
11856 | int need_ranges_base = die->tag != DW_TAG_compile_unit; | |
801e3a5b JB |
11857 | |
11858 | /* The value of the DW_AT_ranges attribute is the offset of the | |
11859 | address range list in the .debug_ranges section. */ | |
ab435259 DE |
11860 | unsigned long offset = (DW_UNSND (attr) |
11861 | + (need_ranges_base ? cu->ranges_base : 0)); | |
d62bfeaf | 11862 | const gdb_byte *buffer; |
801e3a5b JB |
11863 | |
11864 | /* For some target architectures, but not others, the | |
11865 | read_address function sign-extends the addresses it returns. | |
11866 | To recognize base address selection entries, we need a | |
11867 | mask. */ | |
11868 | unsigned int addr_size = cu->header.addr_size; | |
11869 | CORE_ADDR base_select_mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
11870 | ||
11871 | /* The base address, to which the next pair is relative. Note | |
11872 | that this 'base' is a DWARF concept: most entries in a range | |
11873 | list are relative, to reduce the number of relocs against the | |
11874 | debugging information. This is separate from this function's | |
11875 | 'baseaddr' argument, which GDB uses to relocate debugging | |
11876 | information from a shared library based on the address at | |
11877 | which the library was loaded. */ | |
d00adf39 DE |
11878 | CORE_ADDR base = cu->base_address; |
11879 | int base_known = cu->base_known; | |
801e3a5b | 11880 | |
d62bfeaf | 11881 | dwarf2_read_section (objfile, &dwarf2_per_objfile->ranges); |
dce234bc | 11882 | if (offset >= dwarf2_per_objfile->ranges.size) |
801e3a5b JB |
11883 | { |
11884 | complaint (&symfile_complaints, | |
11885 | _("Offset %lu out of bounds for DW_AT_ranges attribute"), | |
11886 | offset); | |
11887 | return; | |
11888 | } | |
d62bfeaf | 11889 | buffer = dwarf2_per_objfile->ranges.buffer + offset; |
801e3a5b JB |
11890 | |
11891 | for (;;) | |
11892 | { | |
11893 | unsigned int bytes_read; | |
11894 | CORE_ADDR start, end; | |
11895 | ||
11896 | start = read_address (obfd, buffer, cu, &bytes_read); | |
11897 | buffer += bytes_read; | |
11898 | end = read_address (obfd, buffer, cu, &bytes_read); | |
11899 | buffer += bytes_read; | |
11900 | ||
11901 | /* Did we find the end of the range list? */ | |
11902 | if (start == 0 && end == 0) | |
11903 | break; | |
11904 | ||
11905 | /* Did we find a base address selection entry? */ | |
11906 | else if ((start & base_select_mask) == base_select_mask) | |
11907 | { | |
11908 | base = end; | |
11909 | base_known = 1; | |
11910 | } | |
11911 | ||
11912 | /* We found an ordinary address range. */ | |
11913 | else | |
11914 | { | |
11915 | if (!base_known) | |
11916 | { | |
11917 | complaint (&symfile_complaints, | |
3e43a32a MS |
11918 | _("Invalid .debug_ranges data " |
11919 | "(no base address)")); | |
801e3a5b JB |
11920 | return; |
11921 | } | |
11922 | ||
9277c30c UW |
11923 | if (start > end) |
11924 | { | |
11925 | /* Inverted range entries are invalid. */ | |
11926 | complaint (&symfile_complaints, | |
11927 | _("Invalid .debug_ranges data " | |
11928 | "(inverted range)")); | |
11929 | return; | |
11930 | } | |
11931 | ||
11932 | /* Empty range entries have no effect. */ | |
11933 | if (start == end) | |
11934 | continue; | |
11935 | ||
01093045 DE |
11936 | start += base + baseaddr; |
11937 | end += base + baseaddr; | |
11938 | ||
11939 | /* A not-uncommon case of bad debug info. | |
11940 | Don't pollute the addrmap with bad data. */ | |
11941 | if (start == 0 && !dwarf2_per_objfile->has_section_at_zero) | |
11942 | { | |
11943 | complaint (&symfile_complaints, | |
11944 | _(".debug_ranges entry has start address of zero" | |
4262abfb | 11945 | " [in module %s]"), objfile_name (objfile)); |
01093045 DE |
11946 | continue; |
11947 | } | |
11948 | ||
11949 | record_block_range (block, start, end - 1); | |
801e3a5b JB |
11950 | } |
11951 | } | |
11952 | } | |
11953 | } | |
11954 | ||
685b1105 JK |
11955 | /* Check whether the producer field indicates either of GCC < 4.6, or the |
11956 | Intel C/C++ compiler, and cache the result in CU. */ | |
60d5a603 | 11957 | |
685b1105 JK |
11958 | static void |
11959 | check_producer (struct dwarf2_cu *cu) | |
60d5a603 JK |
11960 | { |
11961 | const char *cs; | |
11962 | int major, minor, release; | |
11963 | ||
11964 | if (cu->producer == NULL) | |
11965 | { | |
11966 | /* For unknown compilers expect their behavior is DWARF version | |
11967 | compliant. | |
11968 | ||
11969 | GCC started to support .debug_types sections by -gdwarf-4 since | |
11970 | gcc-4.5.x. As the .debug_types sections are missing DW_AT_producer | |
11971 | for their space efficiency GDB cannot workaround gcc-4.5.x -gdwarf-4 | |
11972 | combination. gcc-4.5.x -gdwarf-4 binaries have DW_AT_accessibility | |
11973 | interpreted incorrectly by GDB now - GCC PR debug/48229. */ | |
60d5a603 | 11974 | } |
685b1105 | 11975 | else if (strncmp (cu->producer, "GNU ", strlen ("GNU ")) == 0) |
60d5a603 | 11976 | { |
685b1105 JK |
11977 | /* Skip any identifier after "GNU " - such as "C++" or "Java". */ |
11978 | ||
ba919b58 TT |
11979 | cs = &cu->producer[strlen ("GNU ")]; |
11980 | while (*cs && !isdigit (*cs)) | |
11981 | cs++; | |
11982 | if (sscanf (cs, "%d.%d.%d", &major, &minor, &release) != 3) | |
11983 | { | |
11984 | /* Not recognized as GCC. */ | |
11985 | } | |
11986 | else | |
1b80a9fa JK |
11987 | { |
11988 | cu->producer_is_gxx_lt_4_6 = major < 4 || (major == 4 && minor < 6); | |
11989 | cu->producer_is_gcc_lt_4_3 = major < 4 || (major == 4 && minor < 3); | |
11990 | } | |
685b1105 JK |
11991 | } |
11992 | else if (strncmp (cu->producer, "Intel(R) C", strlen ("Intel(R) C")) == 0) | |
11993 | cu->producer_is_icc = 1; | |
11994 | else | |
11995 | { | |
11996 | /* For other non-GCC compilers, expect their behavior is DWARF version | |
11997 | compliant. */ | |
60d5a603 JK |
11998 | } |
11999 | ||
ba919b58 | 12000 | cu->checked_producer = 1; |
685b1105 | 12001 | } |
ba919b58 | 12002 | |
685b1105 JK |
12003 | /* Check for GCC PR debug/45124 fix which is not present in any G++ version up |
12004 | to 4.5.any while it is present already in G++ 4.6.0 - the PR has been fixed | |
12005 | during 4.6.0 experimental. */ | |
12006 | ||
12007 | static int | |
12008 | producer_is_gxx_lt_4_6 (struct dwarf2_cu *cu) | |
12009 | { | |
12010 | if (!cu->checked_producer) | |
12011 | check_producer (cu); | |
12012 | ||
12013 | return cu->producer_is_gxx_lt_4_6; | |
60d5a603 JK |
12014 | } |
12015 | ||
12016 | /* Return the default accessibility type if it is not overriden by | |
12017 | DW_AT_accessibility. */ | |
12018 | ||
12019 | static enum dwarf_access_attribute | |
12020 | dwarf2_default_access_attribute (struct die_info *die, struct dwarf2_cu *cu) | |
12021 | { | |
12022 | if (cu->header.version < 3 || producer_is_gxx_lt_4_6 (cu)) | |
12023 | { | |
12024 | /* The default DWARF 2 accessibility for members is public, the default | |
12025 | accessibility for inheritance is private. */ | |
12026 | ||
12027 | if (die->tag != DW_TAG_inheritance) | |
12028 | return DW_ACCESS_public; | |
12029 | else | |
12030 | return DW_ACCESS_private; | |
12031 | } | |
12032 | else | |
12033 | { | |
12034 | /* DWARF 3+ defines the default accessibility a different way. The same | |
12035 | rules apply now for DW_TAG_inheritance as for the members and it only | |
12036 | depends on the container kind. */ | |
12037 | ||
12038 | if (die->parent->tag == DW_TAG_class_type) | |
12039 | return DW_ACCESS_private; | |
12040 | else | |
12041 | return DW_ACCESS_public; | |
12042 | } | |
12043 | } | |
12044 | ||
74ac6d43 TT |
12045 | /* Look for DW_AT_data_member_location. Set *OFFSET to the byte |
12046 | offset. If the attribute was not found return 0, otherwise return | |
12047 | 1. If it was found but could not properly be handled, set *OFFSET | |
12048 | to 0. */ | |
12049 | ||
12050 | static int | |
12051 | handle_data_member_location (struct die_info *die, struct dwarf2_cu *cu, | |
12052 | LONGEST *offset) | |
12053 | { | |
12054 | struct attribute *attr; | |
12055 | ||
12056 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); | |
12057 | if (attr != NULL) | |
12058 | { | |
12059 | *offset = 0; | |
12060 | ||
12061 | /* Note that we do not check for a section offset first here. | |
12062 | This is because DW_AT_data_member_location is new in DWARF 4, | |
12063 | so if we see it, we can assume that a constant form is really | |
12064 | a constant and not a section offset. */ | |
12065 | if (attr_form_is_constant (attr)) | |
12066 | *offset = dwarf2_get_attr_constant_value (attr, 0); | |
12067 | else if (attr_form_is_section_offset (attr)) | |
12068 | dwarf2_complex_location_expr_complaint (); | |
12069 | else if (attr_form_is_block (attr)) | |
12070 | *offset = decode_locdesc (DW_BLOCK (attr), cu); | |
12071 | else | |
12072 | dwarf2_complex_location_expr_complaint (); | |
12073 | ||
12074 | return 1; | |
12075 | } | |
12076 | ||
12077 | return 0; | |
12078 | } | |
12079 | ||
c906108c SS |
12080 | /* Add an aggregate field to the field list. */ |
12081 | ||
12082 | static void | |
107d2387 | 12083 | dwarf2_add_field (struct field_info *fip, struct die_info *die, |
e7c27a73 | 12084 | struct dwarf2_cu *cu) |
6e70227d | 12085 | { |
e7c27a73 | 12086 | struct objfile *objfile = cu->objfile; |
5e2b427d | 12087 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
12088 | struct nextfield *new_field; |
12089 | struct attribute *attr; | |
12090 | struct field *fp; | |
15d034d0 | 12091 | const char *fieldname = ""; |
c906108c SS |
12092 | |
12093 | /* Allocate a new field list entry and link it in. */ | |
12094 | new_field = (struct nextfield *) xmalloc (sizeof (struct nextfield)); | |
b8c9b27d | 12095 | make_cleanup (xfree, new_field); |
c906108c | 12096 | memset (new_field, 0, sizeof (struct nextfield)); |
7d0ccb61 DJ |
12097 | |
12098 | if (die->tag == DW_TAG_inheritance) | |
12099 | { | |
12100 | new_field->next = fip->baseclasses; | |
12101 | fip->baseclasses = new_field; | |
12102 | } | |
12103 | else | |
12104 | { | |
12105 | new_field->next = fip->fields; | |
12106 | fip->fields = new_field; | |
12107 | } | |
c906108c SS |
12108 | fip->nfields++; |
12109 | ||
e142c38c | 12110 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c SS |
12111 | if (attr) |
12112 | new_field->accessibility = DW_UNSND (attr); | |
60d5a603 JK |
12113 | else |
12114 | new_field->accessibility = dwarf2_default_access_attribute (die, cu); | |
c906108c SS |
12115 | if (new_field->accessibility != DW_ACCESS_public) |
12116 | fip->non_public_fields = 1; | |
60d5a603 | 12117 | |
e142c38c | 12118 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); |
c906108c SS |
12119 | if (attr) |
12120 | new_field->virtuality = DW_UNSND (attr); | |
60d5a603 JK |
12121 | else |
12122 | new_field->virtuality = DW_VIRTUALITY_none; | |
c906108c SS |
12123 | |
12124 | fp = &new_field->field; | |
a9a9bd0f | 12125 | |
e142c38c | 12126 | if (die->tag == DW_TAG_member && ! die_is_declaration (die, cu)) |
c906108c | 12127 | { |
74ac6d43 TT |
12128 | LONGEST offset; |
12129 | ||
a9a9bd0f | 12130 | /* Data member other than a C++ static data member. */ |
6e70227d | 12131 | |
c906108c | 12132 | /* Get type of field. */ |
e7c27a73 | 12133 | fp->type = die_type (die, cu); |
c906108c | 12134 | |
d6a843b5 | 12135 | SET_FIELD_BITPOS (*fp, 0); |
01ad7f36 | 12136 | |
c906108c | 12137 | /* Get bit size of field (zero if none). */ |
e142c38c | 12138 | attr = dwarf2_attr (die, DW_AT_bit_size, cu); |
c906108c SS |
12139 | if (attr) |
12140 | { | |
12141 | FIELD_BITSIZE (*fp) = DW_UNSND (attr); | |
12142 | } | |
12143 | else | |
12144 | { | |
12145 | FIELD_BITSIZE (*fp) = 0; | |
12146 | } | |
12147 | ||
12148 | /* Get bit offset of field. */ | |
74ac6d43 TT |
12149 | if (handle_data_member_location (die, cu, &offset)) |
12150 | SET_FIELD_BITPOS (*fp, offset * bits_per_byte); | |
e142c38c | 12151 | attr = dwarf2_attr (die, DW_AT_bit_offset, cu); |
c906108c SS |
12152 | if (attr) |
12153 | { | |
5e2b427d | 12154 | if (gdbarch_bits_big_endian (gdbarch)) |
c906108c SS |
12155 | { |
12156 | /* For big endian bits, the DW_AT_bit_offset gives the | |
c5aa993b JM |
12157 | additional bit offset from the MSB of the containing |
12158 | anonymous object to the MSB of the field. We don't | |
12159 | have to do anything special since we don't need to | |
12160 | know the size of the anonymous object. */ | |
f41f5e61 | 12161 | SET_FIELD_BITPOS (*fp, FIELD_BITPOS (*fp) + DW_UNSND (attr)); |
c906108c SS |
12162 | } |
12163 | else | |
12164 | { | |
12165 | /* For little endian bits, compute the bit offset to the | |
c5aa993b JM |
12166 | MSB of the anonymous object, subtract off the number of |
12167 | bits from the MSB of the field to the MSB of the | |
12168 | object, and then subtract off the number of bits of | |
12169 | the field itself. The result is the bit offset of | |
12170 | the LSB of the field. */ | |
c906108c SS |
12171 | int anonymous_size; |
12172 | int bit_offset = DW_UNSND (attr); | |
12173 | ||
e142c38c | 12174 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
12175 | if (attr) |
12176 | { | |
12177 | /* The size of the anonymous object containing | |
12178 | the bit field is explicit, so use the | |
12179 | indicated size (in bytes). */ | |
12180 | anonymous_size = DW_UNSND (attr); | |
12181 | } | |
12182 | else | |
12183 | { | |
12184 | /* The size of the anonymous object containing | |
12185 | the bit field must be inferred from the type | |
12186 | attribute of the data member containing the | |
12187 | bit field. */ | |
12188 | anonymous_size = TYPE_LENGTH (fp->type); | |
12189 | } | |
f41f5e61 PA |
12190 | SET_FIELD_BITPOS (*fp, |
12191 | (FIELD_BITPOS (*fp) | |
12192 | + anonymous_size * bits_per_byte | |
12193 | - bit_offset - FIELD_BITSIZE (*fp))); | |
c906108c SS |
12194 | } |
12195 | } | |
12196 | ||
12197 | /* Get name of field. */ | |
39cbfefa DJ |
12198 | fieldname = dwarf2_name (die, cu); |
12199 | if (fieldname == NULL) | |
12200 | fieldname = ""; | |
d8151005 DJ |
12201 | |
12202 | /* The name is already allocated along with this objfile, so we don't | |
12203 | need to duplicate it for the type. */ | |
12204 | fp->name = fieldname; | |
c906108c SS |
12205 | |
12206 | /* Change accessibility for artificial fields (e.g. virtual table | |
c5aa993b | 12207 | pointer or virtual base class pointer) to private. */ |
e142c38c | 12208 | if (dwarf2_attr (die, DW_AT_artificial, cu)) |
c906108c | 12209 | { |
d48cc9dd | 12210 | FIELD_ARTIFICIAL (*fp) = 1; |
c906108c SS |
12211 | new_field->accessibility = DW_ACCESS_private; |
12212 | fip->non_public_fields = 1; | |
12213 | } | |
12214 | } | |
a9a9bd0f | 12215 | else if (die->tag == DW_TAG_member || die->tag == DW_TAG_variable) |
c906108c | 12216 | { |
a9a9bd0f DC |
12217 | /* C++ static member. */ |
12218 | ||
12219 | /* NOTE: carlton/2002-11-05: It should be a DW_TAG_member that | |
12220 | is a declaration, but all versions of G++ as of this writing | |
12221 | (so through at least 3.2.1) incorrectly generate | |
12222 | DW_TAG_variable tags. */ | |
6e70227d | 12223 | |
ff355380 | 12224 | const char *physname; |
c906108c | 12225 | |
a9a9bd0f | 12226 | /* Get name of field. */ |
39cbfefa DJ |
12227 | fieldname = dwarf2_name (die, cu); |
12228 | if (fieldname == NULL) | |
c906108c SS |
12229 | return; |
12230 | ||
254e6b9e | 12231 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
3863f96c DE |
12232 | if (attr |
12233 | /* Only create a symbol if this is an external value. | |
12234 | new_symbol checks this and puts the value in the global symbol | |
12235 | table, which we want. If it is not external, new_symbol | |
12236 | will try to put the value in cu->list_in_scope which is wrong. */ | |
12237 | && dwarf2_flag_true_p (die, DW_AT_external, cu)) | |
254e6b9e DE |
12238 | { |
12239 | /* A static const member, not much different than an enum as far as | |
12240 | we're concerned, except that we can support more types. */ | |
12241 | new_symbol (die, NULL, cu); | |
12242 | } | |
12243 | ||
2df3850c | 12244 | /* Get physical name. */ |
ff355380 | 12245 | physname = dwarf2_physname (fieldname, die, cu); |
c906108c | 12246 | |
d8151005 DJ |
12247 | /* The name is already allocated along with this objfile, so we don't |
12248 | need to duplicate it for the type. */ | |
12249 | SET_FIELD_PHYSNAME (*fp, physname ? physname : ""); | |
e7c27a73 | 12250 | FIELD_TYPE (*fp) = die_type (die, cu); |
d8151005 | 12251 | FIELD_NAME (*fp) = fieldname; |
c906108c SS |
12252 | } |
12253 | else if (die->tag == DW_TAG_inheritance) | |
12254 | { | |
74ac6d43 | 12255 | LONGEST offset; |
d4b96c9a | 12256 | |
74ac6d43 TT |
12257 | /* C++ base class field. */ |
12258 | if (handle_data_member_location (die, cu, &offset)) | |
12259 | SET_FIELD_BITPOS (*fp, offset * bits_per_byte); | |
c906108c | 12260 | FIELD_BITSIZE (*fp) = 0; |
e7c27a73 | 12261 | FIELD_TYPE (*fp) = die_type (die, cu); |
c906108c SS |
12262 | FIELD_NAME (*fp) = type_name_no_tag (fp->type); |
12263 | fip->nbaseclasses++; | |
12264 | } | |
12265 | } | |
12266 | ||
98751a41 JK |
12267 | /* Add a typedef defined in the scope of the FIP's class. */ |
12268 | ||
12269 | static void | |
12270 | dwarf2_add_typedef (struct field_info *fip, struct die_info *die, | |
12271 | struct dwarf2_cu *cu) | |
6e70227d | 12272 | { |
98751a41 | 12273 | struct objfile *objfile = cu->objfile; |
98751a41 JK |
12274 | struct typedef_field_list *new_field; |
12275 | struct attribute *attr; | |
12276 | struct typedef_field *fp; | |
12277 | char *fieldname = ""; | |
12278 | ||
12279 | /* Allocate a new field list entry and link it in. */ | |
12280 | new_field = xzalloc (sizeof (*new_field)); | |
12281 | make_cleanup (xfree, new_field); | |
12282 | ||
12283 | gdb_assert (die->tag == DW_TAG_typedef); | |
12284 | ||
12285 | fp = &new_field->field; | |
12286 | ||
12287 | /* Get name of field. */ | |
12288 | fp->name = dwarf2_name (die, cu); | |
12289 | if (fp->name == NULL) | |
12290 | return; | |
12291 | ||
12292 | fp->type = read_type_die (die, cu); | |
12293 | ||
12294 | new_field->next = fip->typedef_field_list; | |
12295 | fip->typedef_field_list = new_field; | |
12296 | fip->typedef_field_list_count++; | |
12297 | } | |
12298 | ||
c906108c SS |
12299 | /* Create the vector of fields, and attach it to the type. */ |
12300 | ||
12301 | static void | |
fba45db2 | 12302 | dwarf2_attach_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 12303 | struct dwarf2_cu *cu) |
c906108c SS |
12304 | { |
12305 | int nfields = fip->nfields; | |
12306 | ||
12307 | /* Record the field count, allocate space for the array of fields, | |
12308 | and create blank accessibility bitfields if necessary. */ | |
12309 | TYPE_NFIELDS (type) = nfields; | |
12310 | TYPE_FIELDS (type) = (struct field *) | |
12311 | TYPE_ALLOC (type, sizeof (struct field) * nfields); | |
12312 | memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nfields); | |
12313 | ||
b4ba55a1 | 12314 | if (fip->non_public_fields && cu->language != language_ada) |
c906108c SS |
12315 | { |
12316 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
12317 | ||
12318 | TYPE_FIELD_PRIVATE_BITS (type) = | |
12319 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
12320 | B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); | |
12321 | ||
12322 | TYPE_FIELD_PROTECTED_BITS (type) = | |
12323 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
12324 | B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); | |
12325 | ||
774b6a14 TT |
12326 | TYPE_FIELD_IGNORE_BITS (type) = |
12327 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
12328 | B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields); | |
c906108c SS |
12329 | } |
12330 | ||
12331 | /* If the type has baseclasses, allocate and clear a bit vector for | |
12332 | TYPE_FIELD_VIRTUAL_BITS. */ | |
b4ba55a1 | 12333 | if (fip->nbaseclasses && cu->language != language_ada) |
c906108c SS |
12334 | { |
12335 | int num_bytes = B_BYTES (fip->nbaseclasses); | |
fe1b8b76 | 12336 | unsigned char *pointer; |
c906108c SS |
12337 | |
12338 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
fe1b8b76 JB |
12339 | pointer = TYPE_ALLOC (type, num_bytes); |
12340 | TYPE_FIELD_VIRTUAL_BITS (type) = pointer; | |
c906108c SS |
12341 | B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), fip->nbaseclasses); |
12342 | TYPE_N_BASECLASSES (type) = fip->nbaseclasses; | |
12343 | } | |
12344 | ||
3e43a32a MS |
12345 | /* Copy the saved-up fields into the field vector. Start from the head of |
12346 | the list, adding to the tail of the field array, so that they end up in | |
12347 | the same order in the array in which they were added to the list. */ | |
c906108c SS |
12348 | while (nfields-- > 0) |
12349 | { | |
7d0ccb61 DJ |
12350 | struct nextfield *fieldp; |
12351 | ||
12352 | if (fip->fields) | |
12353 | { | |
12354 | fieldp = fip->fields; | |
12355 | fip->fields = fieldp->next; | |
12356 | } | |
12357 | else | |
12358 | { | |
12359 | fieldp = fip->baseclasses; | |
12360 | fip->baseclasses = fieldp->next; | |
12361 | } | |
12362 | ||
12363 | TYPE_FIELD (type, nfields) = fieldp->field; | |
12364 | switch (fieldp->accessibility) | |
c906108c | 12365 | { |
c5aa993b | 12366 | case DW_ACCESS_private: |
b4ba55a1 JB |
12367 | if (cu->language != language_ada) |
12368 | SET_TYPE_FIELD_PRIVATE (type, nfields); | |
c5aa993b | 12369 | break; |
c906108c | 12370 | |
c5aa993b | 12371 | case DW_ACCESS_protected: |
b4ba55a1 JB |
12372 | if (cu->language != language_ada) |
12373 | SET_TYPE_FIELD_PROTECTED (type, nfields); | |
c5aa993b | 12374 | break; |
c906108c | 12375 | |
c5aa993b JM |
12376 | case DW_ACCESS_public: |
12377 | break; | |
c906108c | 12378 | |
c5aa993b JM |
12379 | default: |
12380 | /* Unknown accessibility. Complain and treat it as public. */ | |
12381 | { | |
e2e0b3e5 | 12382 | complaint (&symfile_complaints, _("unsupported accessibility %d"), |
7d0ccb61 | 12383 | fieldp->accessibility); |
c5aa993b JM |
12384 | } |
12385 | break; | |
c906108c SS |
12386 | } |
12387 | if (nfields < fip->nbaseclasses) | |
12388 | { | |
7d0ccb61 | 12389 | switch (fieldp->virtuality) |
c906108c | 12390 | { |
c5aa993b JM |
12391 | case DW_VIRTUALITY_virtual: |
12392 | case DW_VIRTUALITY_pure_virtual: | |
b4ba55a1 | 12393 | if (cu->language == language_ada) |
a73c6dcd | 12394 | error (_("unexpected virtuality in component of Ada type")); |
c5aa993b JM |
12395 | SET_TYPE_FIELD_VIRTUAL (type, nfields); |
12396 | break; | |
c906108c SS |
12397 | } |
12398 | } | |
c906108c SS |
12399 | } |
12400 | } | |
12401 | ||
7d27a96d TT |
12402 | /* Return true if this member function is a constructor, false |
12403 | otherwise. */ | |
12404 | ||
12405 | static int | |
12406 | dwarf2_is_constructor (struct die_info *die, struct dwarf2_cu *cu) | |
12407 | { | |
12408 | const char *fieldname; | |
12409 | const char *typename; | |
12410 | int len; | |
12411 | ||
12412 | if (die->parent == NULL) | |
12413 | return 0; | |
12414 | ||
12415 | if (die->parent->tag != DW_TAG_structure_type | |
12416 | && die->parent->tag != DW_TAG_union_type | |
12417 | && die->parent->tag != DW_TAG_class_type) | |
12418 | return 0; | |
12419 | ||
12420 | fieldname = dwarf2_name (die, cu); | |
12421 | typename = dwarf2_name (die->parent, cu); | |
12422 | if (fieldname == NULL || typename == NULL) | |
12423 | return 0; | |
12424 | ||
12425 | len = strlen (fieldname); | |
12426 | return (strncmp (fieldname, typename, len) == 0 | |
12427 | && (typename[len] == '\0' || typename[len] == '<')); | |
12428 | } | |
12429 | ||
c906108c SS |
12430 | /* Add a member function to the proper fieldlist. */ |
12431 | ||
12432 | static void | |
107d2387 | 12433 | dwarf2_add_member_fn (struct field_info *fip, struct die_info *die, |
e7c27a73 | 12434 | struct type *type, struct dwarf2_cu *cu) |
c906108c | 12435 | { |
e7c27a73 | 12436 | struct objfile *objfile = cu->objfile; |
c906108c SS |
12437 | struct attribute *attr; |
12438 | struct fnfieldlist *flp; | |
12439 | int i; | |
12440 | struct fn_field *fnp; | |
15d034d0 | 12441 | const char *fieldname; |
c906108c | 12442 | struct nextfnfield *new_fnfield; |
f792889a | 12443 | struct type *this_type; |
60d5a603 | 12444 | enum dwarf_access_attribute accessibility; |
c906108c | 12445 | |
b4ba55a1 | 12446 | if (cu->language == language_ada) |
a73c6dcd | 12447 | error (_("unexpected member function in Ada type")); |
b4ba55a1 | 12448 | |
2df3850c | 12449 | /* Get name of member function. */ |
39cbfefa DJ |
12450 | fieldname = dwarf2_name (die, cu); |
12451 | if (fieldname == NULL) | |
2df3850c | 12452 | return; |
c906108c | 12453 | |
c906108c SS |
12454 | /* Look up member function name in fieldlist. */ |
12455 | for (i = 0; i < fip->nfnfields; i++) | |
12456 | { | |
27bfe10e | 12457 | if (strcmp (fip->fnfieldlists[i].name, fieldname) == 0) |
c906108c SS |
12458 | break; |
12459 | } | |
12460 | ||
12461 | /* Create new list element if necessary. */ | |
12462 | if (i < fip->nfnfields) | |
12463 | flp = &fip->fnfieldlists[i]; | |
12464 | else | |
12465 | { | |
12466 | if ((fip->nfnfields % DW_FIELD_ALLOC_CHUNK) == 0) | |
12467 | { | |
12468 | fip->fnfieldlists = (struct fnfieldlist *) | |
12469 | xrealloc (fip->fnfieldlists, | |
12470 | (fip->nfnfields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 12471 | * sizeof (struct fnfieldlist)); |
c906108c | 12472 | if (fip->nfnfields == 0) |
c13c43fd | 12473 | make_cleanup (free_current_contents, &fip->fnfieldlists); |
c906108c SS |
12474 | } |
12475 | flp = &fip->fnfieldlists[fip->nfnfields]; | |
12476 | flp->name = fieldname; | |
12477 | flp->length = 0; | |
12478 | flp->head = NULL; | |
3da10d80 | 12479 | i = fip->nfnfields++; |
c906108c SS |
12480 | } |
12481 | ||
12482 | /* Create a new member function field and chain it to the field list | |
0963b4bd | 12483 | entry. */ |
c906108c | 12484 | new_fnfield = (struct nextfnfield *) xmalloc (sizeof (struct nextfnfield)); |
b8c9b27d | 12485 | make_cleanup (xfree, new_fnfield); |
c906108c SS |
12486 | memset (new_fnfield, 0, sizeof (struct nextfnfield)); |
12487 | new_fnfield->next = flp->head; | |
12488 | flp->head = new_fnfield; | |
12489 | flp->length++; | |
12490 | ||
12491 | /* Fill in the member function field info. */ | |
12492 | fnp = &new_fnfield->fnfield; | |
3da10d80 KS |
12493 | |
12494 | /* Delay processing of the physname until later. */ | |
12495 | if (cu->language == language_cplus || cu->language == language_java) | |
12496 | { | |
12497 | add_to_method_list (type, i, flp->length - 1, fieldname, | |
12498 | die, cu); | |
12499 | } | |
12500 | else | |
12501 | { | |
1d06ead6 | 12502 | const char *physname = dwarf2_physname (fieldname, die, cu); |
3da10d80 KS |
12503 | fnp->physname = physname ? physname : ""; |
12504 | } | |
12505 | ||
c906108c | 12506 | fnp->type = alloc_type (objfile); |
f792889a DJ |
12507 | this_type = read_type_die (die, cu); |
12508 | if (this_type && TYPE_CODE (this_type) == TYPE_CODE_FUNC) | |
c906108c | 12509 | { |
f792889a | 12510 | int nparams = TYPE_NFIELDS (this_type); |
c906108c | 12511 | |
f792889a | 12512 | /* TYPE is the domain of this method, and THIS_TYPE is the type |
e26fb1d7 DC |
12513 | of the method itself (TYPE_CODE_METHOD). */ |
12514 | smash_to_method_type (fnp->type, type, | |
f792889a DJ |
12515 | TYPE_TARGET_TYPE (this_type), |
12516 | TYPE_FIELDS (this_type), | |
12517 | TYPE_NFIELDS (this_type), | |
12518 | TYPE_VARARGS (this_type)); | |
c906108c SS |
12519 | |
12520 | /* Handle static member functions. | |
c5aa993b | 12521 | Dwarf2 has no clean way to discern C++ static and non-static |
0963b4bd MS |
12522 | member functions. G++ helps GDB by marking the first |
12523 | parameter for non-static member functions (which is the this | |
12524 | pointer) as artificial. We obtain this information from | |
12525 | read_subroutine_type via TYPE_FIELD_ARTIFICIAL. */ | |
f792889a | 12526 | if (nparams == 0 || TYPE_FIELD_ARTIFICIAL (this_type, 0) == 0) |
c906108c SS |
12527 | fnp->voffset = VOFFSET_STATIC; |
12528 | } | |
12529 | else | |
e2e0b3e5 | 12530 | complaint (&symfile_complaints, _("member function type missing for '%s'"), |
3da10d80 | 12531 | dwarf2_full_name (fieldname, die, cu)); |
c906108c SS |
12532 | |
12533 | /* Get fcontext from DW_AT_containing_type if present. */ | |
e142c38c | 12534 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
e7c27a73 | 12535 | fnp->fcontext = die_containing_type (die, cu); |
c906108c | 12536 | |
3e43a32a MS |
12537 | /* dwarf2 doesn't have stubbed physical names, so the setting of is_const and |
12538 | is_volatile is irrelevant, as it is needed by gdb_mangle_name only. */ | |
c906108c SS |
12539 | |
12540 | /* Get accessibility. */ | |
e142c38c | 12541 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c | 12542 | if (attr) |
60d5a603 JK |
12543 | accessibility = DW_UNSND (attr); |
12544 | else | |
12545 | accessibility = dwarf2_default_access_attribute (die, cu); | |
12546 | switch (accessibility) | |
c906108c | 12547 | { |
60d5a603 JK |
12548 | case DW_ACCESS_private: |
12549 | fnp->is_private = 1; | |
12550 | break; | |
12551 | case DW_ACCESS_protected: | |
12552 | fnp->is_protected = 1; | |
12553 | break; | |
c906108c SS |
12554 | } |
12555 | ||
b02dede2 | 12556 | /* Check for artificial methods. */ |
e142c38c | 12557 | attr = dwarf2_attr (die, DW_AT_artificial, cu); |
b02dede2 DJ |
12558 | if (attr && DW_UNSND (attr) != 0) |
12559 | fnp->is_artificial = 1; | |
12560 | ||
7d27a96d TT |
12561 | fnp->is_constructor = dwarf2_is_constructor (die, cu); |
12562 | ||
0d564a31 | 12563 | /* Get index in virtual function table if it is a virtual member |
aec5aa8b TT |
12564 | function. For older versions of GCC, this is an offset in the |
12565 | appropriate virtual table, as specified by DW_AT_containing_type. | |
12566 | For everyone else, it is an expression to be evaluated relative | |
0d564a31 DJ |
12567 | to the object address. */ |
12568 | ||
e142c38c | 12569 | attr = dwarf2_attr (die, DW_AT_vtable_elem_location, cu); |
aec5aa8b | 12570 | if (attr) |
8e19ed76 | 12571 | { |
aec5aa8b | 12572 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size > 0) |
8e19ed76 | 12573 | { |
aec5aa8b TT |
12574 | if (DW_BLOCK (attr)->data[0] == DW_OP_constu) |
12575 | { | |
12576 | /* Old-style GCC. */ | |
12577 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu) + 2; | |
12578 | } | |
12579 | else if (DW_BLOCK (attr)->data[0] == DW_OP_deref | |
12580 | || (DW_BLOCK (attr)->size > 1 | |
12581 | && DW_BLOCK (attr)->data[0] == DW_OP_deref_size | |
12582 | && DW_BLOCK (attr)->data[1] == cu->header.addr_size)) | |
12583 | { | |
12584 | struct dwarf_block blk; | |
12585 | int offset; | |
12586 | ||
12587 | offset = (DW_BLOCK (attr)->data[0] == DW_OP_deref | |
12588 | ? 1 : 2); | |
12589 | blk.size = DW_BLOCK (attr)->size - offset; | |
12590 | blk.data = DW_BLOCK (attr)->data + offset; | |
12591 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu); | |
12592 | if ((fnp->voffset % cu->header.addr_size) != 0) | |
12593 | dwarf2_complex_location_expr_complaint (); | |
12594 | else | |
12595 | fnp->voffset /= cu->header.addr_size; | |
12596 | fnp->voffset += 2; | |
12597 | } | |
12598 | else | |
12599 | dwarf2_complex_location_expr_complaint (); | |
12600 | ||
12601 | if (!fnp->fcontext) | |
12602 | fnp->fcontext = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (this_type, 0)); | |
12603 | } | |
3690dd37 | 12604 | else if (attr_form_is_section_offset (attr)) |
8e19ed76 | 12605 | { |
4d3c2250 | 12606 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
12607 | } |
12608 | else | |
12609 | { | |
4d3c2250 KB |
12610 | dwarf2_invalid_attrib_class_complaint ("DW_AT_vtable_elem_location", |
12611 | fieldname); | |
8e19ed76 | 12612 | } |
0d564a31 | 12613 | } |
d48cc9dd DJ |
12614 | else |
12615 | { | |
12616 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); | |
12617 | if (attr && DW_UNSND (attr)) | |
12618 | { | |
12619 | /* GCC does this, as of 2008-08-25; PR debug/37237. */ | |
12620 | complaint (&symfile_complaints, | |
3e43a32a MS |
12621 | _("Member function \"%s\" (offset %d) is virtual " |
12622 | "but the vtable offset is not specified"), | |
b64f50a1 | 12623 | fieldname, die->offset.sect_off); |
9655fd1a | 12624 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
d48cc9dd DJ |
12625 | TYPE_CPLUS_DYNAMIC (type) = 1; |
12626 | } | |
12627 | } | |
c906108c SS |
12628 | } |
12629 | ||
12630 | /* Create the vector of member function fields, and attach it to the type. */ | |
12631 | ||
12632 | static void | |
fba45db2 | 12633 | dwarf2_attach_fn_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 12634 | struct dwarf2_cu *cu) |
c906108c SS |
12635 | { |
12636 | struct fnfieldlist *flp; | |
c906108c SS |
12637 | int i; |
12638 | ||
b4ba55a1 | 12639 | if (cu->language == language_ada) |
a73c6dcd | 12640 | error (_("unexpected member functions in Ada type")); |
b4ba55a1 | 12641 | |
c906108c SS |
12642 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
12643 | TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) | |
12644 | TYPE_ALLOC (type, sizeof (struct fn_fieldlist) * fip->nfnfields); | |
12645 | ||
12646 | for (i = 0, flp = fip->fnfieldlists; i < fip->nfnfields; i++, flp++) | |
12647 | { | |
12648 | struct nextfnfield *nfp = flp->head; | |
12649 | struct fn_fieldlist *fn_flp = &TYPE_FN_FIELDLIST (type, i); | |
12650 | int k; | |
12651 | ||
12652 | TYPE_FN_FIELDLIST_NAME (type, i) = flp->name; | |
12653 | TYPE_FN_FIELDLIST_LENGTH (type, i) = flp->length; | |
12654 | fn_flp->fn_fields = (struct fn_field *) | |
12655 | TYPE_ALLOC (type, sizeof (struct fn_field) * flp->length); | |
12656 | for (k = flp->length; (k--, nfp); nfp = nfp->next) | |
c5aa993b | 12657 | fn_flp->fn_fields[k] = nfp->fnfield; |
c906108c SS |
12658 | } |
12659 | ||
12660 | TYPE_NFN_FIELDS (type) = fip->nfnfields; | |
c906108c SS |
12661 | } |
12662 | ||
1168df01 JB |
12663 | /* Returns non-zero if NAME is the name of a vtable member in CU's |
12664 | language, zero otherwise. */ | |
12665 | static int | |
12666 | is_vtable_name (const char *name, struct dwarf2_cu *cu) | |
12667 | { | |
12668 | static const char vptr[] = "_vptr"; | |
987504bb | 12669 | static const char vtable[] = "vtable"; |
1168df01 | 12670 | |
987504bb JJ |
12671 | /* Look for the C++ and Java forms of the vtable. */ |
12672 | if ((cu->language == language_java | |
12673 | && strncmp (name, vtable, sizeof (vtable) - 1) == 0) | |
12674 | || (strncmp (name, vptr, sizeof (vptr) - 1) == 0 | |
12675 | && is_cplus_marker (name[sizeof (vptr) - 1]))) | |
1168df01 JB |
12676 | return 1; |
12677 | ||
12678 | return 0; | |
12679 | } | |
12680 | ||
c0dd20ea | 12681 | /* GCC outputs unnamed structures that are really pointers to member |
0b92b5bb TT |
12682 | functions, with the ABI-specified layout. If TYPE describes |
12683 | such a structure, smash it into a member function type. | |
61049d3b DJ |
12684 | |
12685 | GCC shouldn't do this; it should just output pointer to member DIEs. | |
12686 | This is GCC PR debug/28767. */ | |
c0dd20ea | 12687 | |
0b92b5bb TT |
12688 | static void |
12689 | quirk_gcc_member_function_pointer (struct type *type, struct objfile *objfile) | |
c0dd20ea | 12690 | { |
0b92b5bb | 12691 | struct type *pfn_type, *domain_type, *new_type; |
c0dd20ea DJ |
12692 | |
12693 | /* Check for a structure with no name and two children. */ | |
0b92b5bb TT |
12694 | if (TYPE_CODE (type) != TYPE_CODE_STRUCT || TYPE_NFIELDS (type) != 2) |
12695 | return; | |
c0dd20ea DJ |
12696 | |
12697 | /* Check for __pfn and __delta members. */ | |
0b92b5bb TT |
12698 | if (TYPE_FIELD_NAME (type, 0) == NULL |
12699 | || strcmp (TYPE_FIELD_NAME (type, 0), "__pfn") != 0 | |
12700 | || TYPE_FIELD_NAME (type, 1) == NULL | |
12701 | || strcmp (TYPE_FIELD_NAME (type, 1), "__delta") != 0) | |
12702 | return; | |
c0dd20ea DJ |
12703 | |
12704 | /* Find the type of the method. */ | |
0b92b5bb | 12705 | pfn_type = TYPE_FIELD_TYPE (type, 0); |
c0dd20ea DJ |
12706 | if (pfn_type == NULL |
12707 | || TYPE_CODE (pfn_type) != TYPE_CODE_PTR | |
12708 | || TYPE_CODE (TYPE_TARGET_TYPE (pfn_type)) != TYPE_CODE_FUNC) | |
0b92b5bb | 12709 | return; |
c0dd20ea DJ |
12710 | |
12711 | /* Look for the "this" argument. */ | |
12712 | pfn_type = TYPE_TARGET_TYPE (pfn_type); | |
12713 | if (TYPE_NFIELDS (pfn_type) == 0 | |
0b92b5bb | 12714 | /* || TYPE_FIELD_TYPE (pfn_type, 0) == NULL */ |
c0dd20ea | 12715 | || TYPE_CODE (TYPE_FIELD_TYPE (pfn_type, 0)) != TYPE_CODE_PTR) |
0b92b5bb | 12716 | return; |
c0dd20ea DJ |
12717 | |
12718 | domain_type = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (pfn_type, 0)); | |
0b92b5bb TT |
12719 | new_type = alloc_type (objfile); |
12720 | smash_to_method_type (new_type, domain_type, TYPE_TARGET_TYPE (pfn_type), | |
c0dd20ea DJ |
12721 | TYPE_FIELDS (pfn_type), TYPE_NFIELDS (pfn_type), |
12722 | TYPE_VARARGS (pfn_type)); | |
0b92b5bb | 12723 | smash_to_methodptr_type (type, new_type); |
c0dd20ea | 12724 | } |
1168df01 | 12725 | |
685b1105 JK |
12726 | /* Return non-zero if the CU's PRODUCER string matches the Intel C/C++ compiler |
12727 | (icc). */ | |
12728 | ||
12729 | static int | |
12730 | producer_is_icc (struct dwarf2_cu *cu) | |
12731 | { | |
12732 | if (!cu->checked_producer) | |
12733 | check_producer (cu); | |
12734 | ||
12735 | return cu->producer_is_icc; | |
12736 | } | |
12737 | ||
c906108c | 12738 | /* Called when we find the DIE that starts a structure or union scope |
c767944b DJ |
12739 | (definition) to create a type for the structure or union. Fill in |
12740 | the type's name and general properties; the members will not be | |
3d1d5ea3 | 12741 | processed until process_structure_scope. |
c906108c | 12742 | |
c767944b DJ |
12743 | NOTE: we need to call these functions regardless of whether or not the |
12744 | DIE has a DW_AT_name attribute, since it might be an anonymous | |
c906108c SS |
12745 | structure or union. This gets the type entered into our set of |
12746 | user defined types. | |
12747 | ||
12748 | However, if the structure is incomplete (an opaque struct/union) | |
12749 | then suppress creating a symbol table entry for it since gdb only | |
12750 | wants to find the one with the complete definition. Note that if | |
12751 | it is complete, we just call new_symbol, which does it's own | |
12752 | checking about whether the struct/union is anonymous or not (and | |
12753 | suppresses creating a symbol table entry itself). */ | |
12754 | ||
f792889a | 12755 | static struct type * |
134d01f1 | 12756 | read_structure_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 12757 | { |
e7c27a73 | 12758 | struct objfile *objfile = cu->objfile; |
c906108c SS |
12759 | struct type *type; |
12760 | struct attribute *attr; | |
15d034d0 | 12761 | const char *name; |
c906108c | 12762 | |
348e048f DE |
12763 | /* If the definition of this type lives in .debug_types, read that type. |
12764 | Don't follow DW_AT_specification though, that will take us back up | |
12765 | the chain and we want to go down. */ | |
45e58e77 | 12766 | attr = dwarf2_attr_no_follow (die, DW_AT_signature); |
348e048f DE |
12767 | if (attr) |
12768 | { | |
ac9ec31b | 12769 | type = get_DW_AT_signature_type (die, attr, cu); |
9dc481d3 | 12770 | |
ac9ec31b | 12771 | /* The type's CU may not be the same as CU. |
02142a6c | 12772 | Ensure TYPE is recorded with CU in die_type_hash. */ |
348e048f DE |
12773 | return set_die_type (die, type, cu); |
12774 | } | |
12775 | ||
c0dd20ea | 12776 | type = alloc_type (objfile); |
c906108c | 12777 | INIT_CPLUS_SPECIFIC (type); |
93311388 | 12778 | |
39cbfefa DJ |
12779 | name = dwarf2_name (die, cu); |
12780 | if (name != NULL) | |
c906108c | 12781 | { |
987504bb JJ |
12782 | if (cu->language == language_cplus |
12783 | || cu->language == language_java) | |
63d06c5c | 12784 | { |
15d034d0 | 12785 | const char *full_name = dwarf2_full_name (name, die, cu); |
3da10d80 KS |
12786 | |
12787 | /* dwarf2_full_name might have already finished building the DIE's | |
12788 | type. If so, there is no need to continue. */ | |
12789 | if (get_die_type (die, cu) != NULL) | |
12790 | return get_die_type (die, cu); | |
12791 | ||
12792 | TYPE_TAG_NAME (type) = full_name; | |
94af9270 KS |
12793 | if (die->tag == DW_TAG_structure_type |
12794 | || die->tag == DW_TAG_class_type) | |
12795 | TYPE_NAME (type) = TYPE_TAG_NAME (type); | |
63d06c5c DC |
12796 | } |
12797 | else | |
12798 | { | |
d8151005 DJ |
12799 | /* The name is already allocated along with this objfile, so |
12800 | we don't need to duplicate it for the type. */ | |
7d455152 | 12801 | TYPE_TAG_NAME (type) = name; |
94af9270 KS |
12802 | if (die->tag == DW_TAG_class_type) |
12803 | TYPE_NAME (type) = TYPE_TAG_NAME (type); | |
63d06c5c | 12804 | } |
c906108c SS |
12805 | } |
12806 | ||
12807 | if (die->tag == DW_TAG_structure_type) | |
12808 | { | |
12809 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
12810 | } | |
12811 | else if (die->tag == DW_TAG_union_type) | |
12812 | { | |
12813 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
12814 | } | |
12815 | else | |
12816 | { | |
c906108c SS |
12817 | TYPE_CODE (type) = TYPE_CODE_CLASS; |
12818 | } | |
12819 | ||
0cc2414c TT |
12820 | if (cu->language == language_cplus && die->tag == DW_TAG_class_type) |
12821 | TYPE_DECLARED_CLASS (type) = 1; | |
12822 | ||
e142c38c | 12823 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
12824 | if (attr) |
12825 | { | |
12826 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
12827 | } | |
12828 | else | |
12829 | { | |
12830 | TYPE_LENGTH (type) = 0; | |
12831 | } | |
12832 | ||
685b1105 JK |
12833 | if (producer_is_icc (cu)) |
12834 | { | |
12835 | /* ICC does not output the required DW_AT_declaration | |
12836 | on incomplete types, but gives them a size of zero. */ | |
12837 | } | |
12838 | else | |
12839 | TYPE_STUB_SUPPORTED (type) = 1; | |
12840 | ||
dc718098 | 12841 | if (die_is_declaration (die, cu)) |
876cecd0 | 12842 | TYPE_STUB (type) = 1; |
a6c727b2 DJ |
12843 | else if (attr == NULL && die->child == NULL |
12844 | && producer_is_realview (cu->producer)) | |
12845 | /* RealView does not output the required DW_AT_declaration | |
12846 | on incomplete types. */ | |
12847 | TYPE_STUB (type) = 1; | |
dc718098 | 12848 | |
c906108c SS |
12849 | /* We need to add the type field to the die immediately so we don't |
12850 | infinitely recurse when dealing with pointers to the structure | |
0963b4bd | 12851 | type within the structure itself. */ |
1c379e20 | 12852 | set_die_type (die, type, cu); |
c906108c | 12853 | |
7e314c57 JK |
12854 | /* set_die_type should be already done. */ |
12855 | set_descriptive_type (type, die, cu); | |
12856 | ||
c767944b DJ |
12857 | return type; |
12858 | } | |
12859 | ||
12860 | /* Finish creating a structure or union type, including filling in | |
12861 | its members and creating a symbol for it. */ | |
12862 | ||
12863 | static void | |
12864 | process_structure_scope (struct die_info *die, struct dwarf2_cu *cu) | |
12865 | { | |
12866 | struct objfile *objfile = cu->objfile; | |
12867 | struct die_info *child_die = die->child; | |
12868 | struct type *type; | |
12869 | ||
12870 | type = get_die_type (die, cu); | |
12871 | if (type == NULL) | |
12872 | type = read_structure_type (die, cu); | |
12873 | ||
e142c38c | 12874 | if (die->child != NULL && ! die_is_declaration (die, cu)) |
c906108c SS |
12875 | { |
12876 | struct field_info fi; | |
12877 | struct die_info *child_die; | |
34eaf542 | 12878 | VEC (symbolp) *template_args = NULL; |
c767944b | 12879 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
c906108c SS |
12880 | |
12881 | memset (&fi, 0, sizeof (struct field_info)); | |
12882 | ||
639d11d3 | 12883 | child_die = die->child; |
c906108c SS |
12884 | |
12885 | while (child_die && child_die->tag) | |
12886 | { | |
a9a9bd0f DC |
12887 | if (child_die->tag == DW_TAG_member |
12888 | || child_die->tag == DW_TAG_variable) | |
c906108c | 12889 | { |
a9a9bd0f DC |
12890 | /* NOTE: carlton/2002-11-05: A C++ static data member |
12891 | should be a DW_TAG_member that is a declaration, but | |
12892 | all versions of G++ as of this writing (so through at | |
12893 | least 3.2.1) incorrectly generate DW_TAG_variable | |
12894 | tags for them instead. */ | |
e7c27a73 | 12895 | dwarf2_add_field (&fi, child_die, cu); |
c906108c | 12896 | } |
8713b1b1 | 12897 | else if (child_die->tag == DW_TAG_subprogram) |
c906108c | 12898 | { |
0963b4bd | 12899 | /* C++ member function. */ |
e7c27a73 | 12900 | dwarf2_add_member_fn (&fi, child_die, type, cu); |
c906108c SS |
12901 | } |
12902 | else if (child_die->tag == DW_TAG_inheritance) | |
12903 | { | |
12904 | /* C++ base class field. */ | |
e7c27a73 | 12905 | dwarf2_add_field (&fi, child_die, cu); |
c906108c | 12906 | } |
98751a41 JK |
12907 | else if (child_die->tag == DW_TAG_typedef) |
12908 | dwarf2_add_typedef (&fi, child_die, cu); | |
34eaf542 TT |
12909 | else if (child_die->tag == DW_TAG_template_type_param |
12910 | || child_die->tag == DW_TAG_template_value_param) | |
12911 | { | |
12912 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
12913 | ||
f1078f66 DJ |
12914 | if (arg != NULL) |
12915 | VEC_safe_push (symbolp, template_args, arg); | |
34eaf542 TT |
12916 | } |
12917 | ||
c906108c SS |
12918 | child_die = sibling_die (child_die); |
12919 | } | |
12920 | ||
34eaf542 TT |
12921 | /* Attach template arguments to type. */ |
12922 | if (! VEC_empty (symbolp, template_args)) | |
12923 | { | |
12924 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
12925 | TYPE_N_TEMPLATE_ARGUMENTS (type) | |
12926 | = VEC_length (symbolp, template_args); | |
12927 | TYPE_TEMPLATE_ARGUMENTS (type) | |
12928 | = obstack_alloc (&objfile->objfile_obstack, | |
12929 | (TYPE_N_TEMPLATE_ARGUMENTS (type) | |
12930 | * sizeof (struct symbol *))); | |
12931 | memcpy (TYPE_TEMPLATE_ARGUMENTS (type), | |
12932 | VEC_address (symbolp, template_args), | |
12933 | (TYPE_N_TEMPLATE_ARGUMENTS (type) | |
12934 | * sizeof (struct symbol *))); | |
12935 | VEC_free (symbolp, template_args); | |
12936 | } | |
12937 | ||
c906108c SS |
12938 | /* Attach fields and member functions to the type. */ |
12939 | if (fi.nfields) | |
e7c27a73 | 12940 | dwarf2_attach_fields_to_type (&fi, type, cu); |
c906108c SS |
12941 | if (fi.nfnfields) |
12942 | { | |
e7c27a73 | 12943 | dwarf2_attach_fn_fields_to_type (&fi, type, cu); |
c906108c | 12944 | |
c5aa993b | 12945 | /* Get the type which refers to the base class (possibly this |
c906108c | 12946 | class itself) which contains the vtable pointer for the current |
0d564a31 DJ |
12947 | class from the DW_AT_containing_type attribute. This use of |
12948 | DW_AT_containing_type is a GNU extension. */ | |
c906108c | 12949 | |
e142c38c | 12950 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
c906108c | 12951 | { |
e7c27a73 | 12952 | struct type *t = die_containing_type (die, cu); |
c906108c SS |
12953 | |
12954 | TYPE_VPTR_BASETYPE (type) = t; | |
12955 | if (type == t) | |
12956 | { | |
c906108c SS |
12957 | int i; |
12958 | ||
12959 | /* Our own class provides vtbl ptr. */ | |
12960 | for (i = TYPE_NFIELDS (t) - 1; | |
12961 | i >= TYPE_N_BASECLASSES (t); | |
12962 | --i) | |
12963 | { | |
0d5cff50 | 12964 | const char *fieldname = TYPE_FIELD_NAME (t, i); |
c906108c | 12965 | |
1168df01 | 12966 | if (is_vtable_name (fieldname, cu)) |
c906108c SS |
12967 | { |
12968 | TYPE_VPTR_FIELDNO (type) = i; | |
12969 | break; | |
12970 | } | |
12971 | } | |
12972 | ||
12973 | /* Complain if virtual function table field not found. */ | |
12974 | if (i < TYPE_N_BASECLASSES (t)) | |
4d3c2250 | 12975 | complaint (&symfile_complaints, |
3e43a32a MS |
12976 | _("virtual function table pointer " |
12977 | "not found when defining class '%s'"), | |
4d3c2250 KB |
12978 | TYPE_TAG_NAME (type) ? TYPE_TAG_NAME (type) : |
12979 | ""); | |
c906108c SS |
12980 | } |
12981 | else | |
12982 | { | |
12983 | TYPE_VPTR_FIELDNO (type) = TYPE_VPTR_FIELDNO (t); | |
12984 | } | |
12985 | } | |
f6235d4c EZ |
12986 | else if (cu->producer |
12987 | && strncmp (cu->producer, | |
12988 | "IBM(R) XL C/C++ Advanced Edition", 32) == 0) | |
12989 | { | |
12990 | /* The IBM XLC compiler does not provide direct indication | |
12991 | of the containing type, but the vtable pointer is | |
12992 | always named __vfp. */ | |
12993 | ||
12994 | int i; | |
12995 | ||
12996 | for (i = TYPE_NFIELDS (type) - 1; | |
12997 | i >= TYPE_N_BASECLASSES (type); | |
12998 | --i) | |
12999 | { | |
13000 | if (strcmp (TYPE_FIELD_NAME (type, i), "__vfp") == 0) | |
13001 | { | |
13002 | TYPE_VPTR_FIELDNO (type) = i; | |
13003 | TYPE_VPTR_BASETYPE (type) = type; | |
13004 | break; | |
13005 | } | |
13006 | } | |
13007 | } | |
c906108c | 13008 | } |
98751a41 JK |
13009 | |
13010 | /* Copy fi.typedef_field_list linked list elements content into the | |
13011 | allocated array TYPE_TYPEDEF_FIELD_ARRAY (type). */ | |
13012 | if (fi.typedef_field_list) | |
13013 | { | |
13014 | int i = fi.typedef_field_list_count; | |
13015 | ||
a0d7a4ff | 13016 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
98751a41 JK |
13017 | TYPE_TYPEDEF_FIELD_ARRAY (type) |
13018 | = TYPE_ALLOC (type, sizeof (TYPE_TYPEDEF_FIELD (type, 0)) * i); | |
13019 | TYPE_TYPEDEF_FIELD_COUNT (type) = i; | |
13020 | ||
13021 | /* Reverse the list order to keep the debug info elements order. */ | |
13022 | while (--i >= 0) | |
13023 | { | |
13024 | struct typedef_field *dest, *src; | |
6e70227d | 13025 | |
98751a41 JK |
13026 | dest = &TYPE_TYPEDEF_FIELD (type, i); |
13027 | src = &fi.typedef_field_list->field; | |
13028 | fi.typedef_field_list = fi.typedef_field_list->next; | |
13029 | *dest = *src; | |
13030 | } | |
13031 | } | |
c767944b DJ |
13032 | |
13033 | do_cleanups (back_to); | |
eb2a6f42 TT |
13034 | |
13035 | if (HAVE_CPLUS_STRUCT (type)) | |
13036 | TYPE_CPLUS_REALLY_JAVA (type) = cu->language == language_java; | |
c906108c | 13037 | } |
63d06c5c | 13038 | |
bb5ed363 | 13039 | quirk_gcc_member_function_pointer (type, objfile); |
0b92b5bb | 13040 | |
90aeadfc DC |
13041 | /* NOTE: carlton/2004-03-16: GCC 3.4 (or at least one of its |
13042 | snapshots) has been known to create a die giving a declaration | |
13043 | for a class that has, as a child, a die giving a definition for a | |
13044 | nested class. So we have to process our children even if the | |
13045 | current die is a declaration. Normally, of course, a declaration | |
13046 | won't have any children at all. */ | |
134d01f1 | 13047 | |
90aeadfc DC |
13048 | while (child_die != NULL && child_die->tag) |
13049 | { | |
13050 | if (child_die->tag == DW_TAG_member | |
13051 | || child_die->tag == DW_TAG_variable | |
34eaf542 TT |
13052 | || child_die->tag == DW_TAG_inheritance |
13053 | || child_die->tag == DW_TAG_template_value_param | |
13054 | || child_die->tag == DW_TAG_template_type_param) | |
134d01f1 | 13055 | { |
90aeadfc | 13056 | /* Do nothing. */ |
134d01f1 | 13057 | } |
90aeadfc DC |
13058 | else |
13059 | process_die (child_die, cu); | |
134d01f1 | 13060 | |
90aeadfc | 13061 | child_die = sibling_die (child_die); |
134d01f1 DJ |
13062 | } |
13063 | ||
fa4028e9 JB |
13064 | /* Do not consider external references. According to the DWARF standard, |
13065 | these DIEs are identified by the fact that they have no byte_size | |
13066 | attribute, and a declaration attribute. */ | |
13067 | if (dwarf2_attr (die, DW_AT_byte_size, cu) != NULL | |
13068 | || !die_is_declaration (die, cu)) | |
c767944b | 13069 | new_symbol (die, type, cu); |
134d01f1 DJ |
13070 | } |
13071 | ||
13072 | /* Given a DW_AT_enumeration_type die, set its type. We do not | |
13073 | complete the type's fields yet, or create any symbols. */ | |
c906108c | 13074 | |
f792889a | 13075 | static struct type * |
134d01f1 | 13076 | read_enumeration_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13077 | { |
e7c27a73 | 13078 | struct objfile *objfile = cu->objfile; |
c906108c | 13079 | struct type *type; |
c906108c | 13080 | struct attribute *attr; |
0114d602 | 13081 | const char *name; |
134d01f1 | 13082 | |
348e048f DE |
13083 | /* If the definition of this type lives in .debug_types, read that type. |
13084 | Don't follow DW_AT_specification though, that will take us back up | |
13085 | the chain and we want to go down. */ | |
45e58e77 | 13086 | attr = dwarf2_attr_no_follow (die, DW_AT_signature); |
348e048f DE |
13087 | if (attr) |
13088 | { | |
ac9ec31b | 13089 | type = get_DW_AT_signature_type (die, attr, cu); |
9dc481d3 | 13090 | |
ac9ec31b | 13091 | /* The type's CU may not be the same as CU. |
02142a6c | 13092 | Ensure TYPE is recorded with CU in die_type_hash. */ |
348e048f DE |
13093 | return set_die_type (die, type, cu); |
13094 | } | |
13095 | ||
c906108c SS |
13096 | type = alloc_type (objfile); |
13097 | ||
13098 | TYPE_CODE (type) = TYPE_CODE_ENUM; | |
94af9270 | 13099 | name = dwarf2_full_name (NULL, die, cu); |
39cbfefa | 13100 | if (name != NULL) |
7d455152 | 13101 | TYPE_TAG_NAME (type) = name; |
c906108c | 13102 | |
e142c38c | 13103 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
13104 | if (attr) |
13105 | { | |
13106 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
13107 | } | |
13108 | else | |
13109 | { | |
13110 | TYPE_LENGTH (type) = 0; | |
13111 | } | |
13112 | ||
137033e9 JB |
13113 | /* The enumeration DIE can be incomplete. In Ada, any type can be |
13114 | declared as private in the package spec, and then defined only | |
13115 | inside the package body. Such types are known as Taft Amendment | |
13116 | Types. When another package uses such a type, an incomplete DIE | |
13117 | may be generated by the compiler. */ | |
02eb380e | 13118 | if (die_is_declaration (die, cu)) |
876cecd0 | 13119 | TYPE_STUB (type) = 1; |
02eb380e | 13120 | |
f792889a | 13121 | return set_die_type (die, type, cu); |
134d01f1 DJ |
13122 | } |
13123 | ||
13124 | /* Given a pointer to a die which begins an enumeration, process all | |
13125 | the dies that define the members of the enumeration, and create the | |
13126 | symbol for the enumeration type. | |
13127 | ||
13128 | NOTE: We reverse the order of the element list. */ | |
13129 | ||
13130 | static void | |
13131 | process_enumeration_scope (struct die_info *die, struct dwarf2_cu *cu) | |
13132 | { | |
f792889a | 13133 | struct type *this_type; |
134d01f1 | 13134 | |
f792889a DJ |
13135 | this_type = get_die_type (die, cu); |
13136 | if (this_type == NULL) | |
13137 | this_type = read_enumeration_type (die, cu); | |
9dc481d3 | 13138 | |
639d11d3 | 13139 | if (die->child != NULL) |
c906108c | 13140 | { |
9dc481d3 DE |
13141 | struct die_info *child_die; |
13142 | struct symbol *sym; | |
13143 | struct field *fields = NULL; | |
13144 | int num_fields = 0; | |
13145 | int unsigned_enum = 1; | |
15d034d0 | 13146 | const char *name; |
cafec441 TT |
13147 | int flag_enum = 1; |
13148 | ULONGEST mask = 0; | |
9dc481d3 | 13149 | |
639d11d3 | 13150 | child_die = die->child; |
c906108c SS |
13151 | while (child_die && child_die->tag) |
13152 | { | |
13153 | if (child_die->tag != DW_TAG_enumerator) | |
13154 | { | |
e7c27a73 | 13155 | process_die (child_die, cu); |
c906108c SS |
13156 | } |
13157 | else | |
13158 | { | |
39cbfefa DJ |
13159 | name = dwarf2_name (child_die, cu); |
13160 | if (name) | |
c906108c | 13161 | { |
f792889a | 13162 | sym = new_symbol (child_die, this_type, cu); |
c906108c | 13163 | if (SYMBOL_VALUE (sym) < 0) |
cafec441 TT |
13164 | { |
13165 | unsigned_enum = 0; | |
13166 | flag_enum = 0; | |
13167 | } | |
13168 | else if ((mask & SYMBOL_VALUE (sym)) != 0) | |
13169 | flag_enum = 0; | |
13170 | else | |
13171 | mask |= SYMBOL_VALUE (sym); | |
c906108c SS |
13172 | |
13173 | if ((num_fields % DW_FIELD_ALLOC_CHUNK) == 0) | |
13174 | { | |
13175 | fields = (struct field *) | |
13176 | xrealloc (fields, | |
13177 | (num_fields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 13178 | * sizeof (struct field)); |
c906108c SS |
13179 | } |
13180 | ||
3567439c | 13181 | FIELD_NAME (fields[num_fields]) = SYMBOL_LINKAGE_NAME (sym); |
c906108c | 13182 | FIELD_TYPE (fields[num_fields]) = NULL; |
14e75d8e | 13183 | SET_FIELD_ENUMVAL (fields[num_fields], SYMBOL_VALUE (sym)); |
c906108c SS |
13184 | FIELD_BITSIZE (fields[num_fields]) = 0; |
13185 | ||
13186 | num_fields++; | |
13187 | } | |
13188 | } | |
13189 | ||
13190 | child_die = sibling_die (child_die); | |
13191 | } | |
13192 | ||
13193 | if (num_fields) | |
13194 | { | |
f792889a DJ |
13195 | TYPE_NFIELDS (this_type) = num_fields; |
13196 | TYPE_FIELDS (this_type) = (struct field *) | |
13197 | TYPE_ALLOC (this_type, sizeof (struct field) * num_fields); | |
13198 | memcpy (TYPE_FIELDS (this_type), fields, | |
c906108c | 13199 | sizeof (struct field) * num_fields); |
b8c9b27d | 13200 | xfree (fields); |
c906108c SS |
13201 | } |
13202 | if (unsigned_enum) | |
876cecd0 | 13203 | TYPE_UNSIGNED (this_type) = 1; |
cafec441 TT |
13204 | if (flag_enum) |
13205 | TYPE_FLAG_ENUM (this_type) = 1; | |
c906108c | 13206 | } |
134d01f1 | 13207 | |
6c83ed52 TT |
13208 | /* If we are reading an enum from a .debug_types unit, and the enum |
13209 | is a declaration, and the enum is not the signatured type in the | |
13210 | unit, then we do not want to add a symbol for it. Adding a | |
13211 | symbol would in some cases obscure the true definition of the | |
13212 | enum, giving users an incomplete type when the definition is | |
13213 | actually available. Note that we do not want to do this for all | |
13214 | enums which are just declarations, because C++0x allows forward | |
13215 | enum declarations. */ | |
3019eac3 | 13216 | if (cu->per_cu->is_debug_types |
6c83ed52 TT |
13217 | && die_is_declaration (die, cu)) |
13218 | { | |
52dc124a | 13219 | struct signatured_type *sig_type; |
6c83ed52 | 13220 | |
c0f78cd4 | 13221 | sig_type = (struct signatured_type *) cu->per_cu; |
3019eac3 DE |
13222 | gdb_assert (sig_type->type_offset_in_section.sect_off != 0); |
13223 | if (sig_type->type_offset_in_section.sect_off != die->offset.sect_off) | |
6c83ed52 TT |
13224 | return; |
13225 | } | |
13226 | ||
f792889a | 13227 | new_symbol (die, this_type, cu); |
c906108c SS |
13228 | } |
13229 | ||
13230 | /* Extract all information from a DW_TAG_array_type DIE and put it in | |
13231 | the DIE's type field. For now, this only handles one dimensional | |
13232 | arrays. */ | |
13233 | ||
f792889a | 13234 | static struct type * |
e7c27a73 | 13235 | read_array_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13236 | { |
e7c27a73 | 13237 | struct objfile *objfile = cu->objfile; |
c906108c | 13238 | struct die_info *child_die; |
7e314c57 | 13239 | struct type *type; |
c906108c SS |
13240 | struct type *element_type, *range_type, *index_type; |
13241 | struct type **range_types = NULL; | |
13242 | struct attribute *attr; | |
13243 | int ndim = 0; | |
13244 | struct cleanup *back_to; | |
15d034d0 | 13245 | const char *name; |
c906108c | 13246 | |
e7c27a73 | 13247 | element_type = die_type (die, cu); |
c906108c | 13248 | |
7e314c57 JK |
13249 | /* The die_type call above may have already set the type for this DIE. */ |
13250 | type = get_die_type (die, cu); | |
13251 | if (type) | |
13252 | return type; | |
13253 | ||
c906108c SS |
13254 | /* Irix 6.2 native cc creates array types without children for |
13255 | arrays with unspecified length. */ | |
639d11d3 | 13256 | if (die->child == NULL) |
c906108c | 13257 | { |
46bf5051 | 13258 | index_type = objfile_type (objfile)->builtin_int; |
c906108c | 13259 | range_type = create_range_type (NULL, index_type, 0, -1); |
f792889a DJ |
13260 | type = create_array_type (NULL, element_type, range_type); |
13261 | return set_die_type (die, type, cu); | |
c906108c SS |
13262 | } |
13263 | ||
13264 | back_to = make_cleanup (null_cleanup, NULL); | |
639d11d3 | 13265 | child_die = die->child; |
c906108c SS |
13266 | while (child_die && child_die->tag) |
13267 | { | |
13268 | if (child_die->tag == DW_TAG_subrange_type) | |
13269 | { | |
f792889a | 13270 | struct type *child_type = read_type_die (child_die, cu); |
9a619af0 | 13271 | |
f792889a | 13272 | if (child_type != NULL) |
a02abb62 | 13273 | { |
0963b4bd MS |
13274 | /* The range type was succesfully read. Save it for the |
13275 | array type creation. */ | |
a02abb62 JB |
13276 | if ((ndim % DW_FIELD_ALLOC_CHUNK) == 0) |
13277 | { | |
13278 | range_types = (struct type **) | |
13279 | xrealloc (range_types, (ndim + DW_FIELD_ALLOC_CHUNK) | |
13280 | * sizeof (struct type *)); | |
13281 | if (ndim == 0) | |
13282 | make_cleanup (free_current_contents, &range_types); | |
13283 | } | |
f792889a | 13284 | range_types[ndim++] = child_type; |
a02abb62 | 13285 | } |
c906108c SS |
13286 | } |
13287 | child_die = sibling_die (child_die); | |
13288 | } | |
13289 | ||
13290 | /* Dwarf2 dimensions are output from left to right, create the | |
13291 | necessary array types in backwards order. */ | |
7ca2d3a3 | 13292 | |
c906108c | 13293 | type = element_type; |
7ca2d3a3 DL |
13294 | |
13295 | if (read_array_order (die, cu) == DW_ORD_col_major) | |
13296 | { | |
13297 | int i = 0; | |
9a619af0 | 13298 | |
7ca2d3a3 DL |
13299 | while (i < ndim) |
13300 | type = create_array_type (NULL, type, range_types[i++]); | |
13301 | } | |
13302 | else | |
13303 | { | |
13304 | while (ndim-- > 0) | |
13305 | type = create_array_type (NULL, type, range_types[ndim]); | |
13306 | } | |
c906108c | 13307 | |
f5f8a009 EZ |
13308 | /* Understand Dwarf2 support for vector types (like they occur on |
13309 | the PowerPC w/ AltiVec). Gcc just adds another attribute to the | |
13310 | array type. This is not part of the Dwarf2/3 standard yet, but a | |
13311 | custom vendor extension. The main difference between a regular | |
13312 | array and the vector variant is that vectors are passed by value | |
13313 | to functions. */ | |
e142c38c | 13314 | attr = dwarf2_attr (die, DW_AT_GNU_vector, cu); |
f5f8a009 | 13315 | if (attr) |
ea37ba09 | 13316 | make_vector_type (type); |
f5f8a009 | 13317 | |
dbc98a8b KW |
13318 | /* The DIE may have DW_AT_byte_size set. For example an OpenCL |
13319 | implementation may choose to implement triple vectors using this | |
13320 | attribute. */ | |
13321 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
13322 | if (attr) | |
13323 | { | |
13324 | if (DW_UNSND (attr) >= TYPE_LENGTH (type)) | |
13325 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
13326 | else | |
3e43a32a MS |
13327 | complaint (&symfile_complaints, |
13328 | _("DW_AT_byte_size for array type smaller " | |
13329 | "than the total size of elements")); | |
dbc98a8b KW |
13330 | } |
13331 | ||
39cbfefa DJ |
13332 | name = dwarf2_name (die, cu); |
13333 | if (name) | |
13334 | TYPE_NAME (type) = name; | |
6e70227d | 13335 | |
0963b4bd | 13336 | /* Install the type in the die. */ |
7e314c57 JK |
13337 | set_die_type (die, type, cu); |
13338 | ||
13339 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
13340 | set_descriptive_type (type, die, cu); |
13341 | ||
c906108c SS |
13342 | do_cleanups (back_to); |
13343 | ||
7e314c57 | 13344 | return type; |
c906108c SS |
13345 | } |
13346 | ||
7ca2d3a3 | 13347 | static enum dwarf_array_dim_ordering |
6e70227d | 13348 | read_array_order (struct die_info *die, struct dwarf2_cu *cu) |
7ca2d3a3 DL |
13349 | { |
13350 | struct attribute *attr; | |
13351 | ||
13352 | attr = dwarf2_attr (die, DW_AT_ordering, cu); | |
13353 | ||
13354 | if (attr) return DW_SND (attr); | |
13355 | ||
0963b4bd MS |
13356 | /* GNU F77 is a special case, as at 08/2004 array type info is the |
13357 | opposite order to the dwarf2 specification, but data is still | |
13358 | laid out as per normal fortran. | |
7ca2d3a3 | 13359 | |
0963b4bd MS |
13360 | FIXME: dsl/2004-8-20: If G77 is ever fixed, this will also need |
13361 | version checking. */ | |
7ca2d3a3 | 13362 | |
905e0470 PM |
13363 | if (cu->language == language_fortran |
13364 | && cu->producer && strstr (cu->producer, "GNU F77")) | |
7ca2d3a3 DL |
13365 | { |
13366 | return DW_ORD_row_major; | |
13367 | } | |
13368 | ||
6e70227d | 13369 | switch (cu->language_defn->la_array_ordering) |
7ca2d3a3 DL |
13370 | { |
13371 | case array_column_major: | |
13372 | return DW_ORD_col_major; | |
13373 | case array_row_major: | |
13374 | default: | |
13375 | return DW_ORD_row_major; | |
13376 | }; | |
13377 | } | |
13378 | ||
72019c9c | 13379 | /* Extract all information from a DW_TAG_set_type DIE and put it in |
0963b4bd | 13380 | the DIE's type field. */ |
72019c9c | 13381 | |
f792889a | 13382 | static struct type * |
72019c9c GM |
13383 | read_set_type (struct die_info *die, struct dwarf2_cu *cu) |
13384 | { | |
7e314c57 JK |
13385 | struct type *domain_type, *set_type; |
13386 | struct attribute *attr; | |
f792889a | 13387 | |
7e314c57 JK |
13388 | domain_type = die_type (die, cu); |
13389 | ||
13390 | /* The die_type call above may have already set the type for this DIE. */ | |
13391 | set_type = get_die_type (die, cu); | |
13392 | if (set_type) | |
13393 | return set_type; | |
13394 | ||
13395 | set_type = create_set_type (NULL, domain_type); | |
13396 | ||
13397 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
d09039dd PM |
13398 | if (attr) |
13399 | TYPE_LENGTH (set_type) = DW_UNSND (attr); | |
7e314c57 | 13400 | |
f792889a | 13401 | return set_die_type (die, set_type, cu); |
72019c9c | 13402 | } |
7ca2d3a3 | 13403 | |
0971de02 TT |
13404 | /* A helper for read_common_block that creates a locexpr baton. |
13405 | SYM is the symbol which we are marking as computed. | |
13406 | COMMON_DIE is the DIE for the common block. | |
13407 | COMMON_LOC is the location expression attribute for the common | |
13408 | block itself. | |
13409 | MEMBER_LOC is the location expression attribute for the particular | |
13410 | member of the common block that we are processing. | |
13411 | CU is the CU from which the above come. */ | |
13412 | ||
13413 | static void | |
13414 | mark_common_block_symbol_computed (struct symbol *sym, | |
13415 | struct die_info *common_die, | |
13416 | struct attribute *common_loc, | |
13417 | struct attribute *member_loc, | |
13418 | struct dwarf2_cu *cu) | |
13419 | { | |
13420 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
13421 | struct dwarf2_locexpr_baton *baton; | |
13422 | gdb_byte *ptr; | |
13423 | unsigned int cu_off; | |
13424 | enum bfd_endian byte_order = gdbarch_byte_order (get_objfile_arch (objfile)); | |
13425 | LONGEST offset = 0; | |
13426 | ||
13427 | gdb_assert (common_loc && member_loc); | |
13428 | gdb_assert (attr_form_is_block (common_loc)); | |
13429 | gdb_assert (attr_form_is_block (member_loc) | |
13430 | || attr_form_is_constant (member_loc)); | |
13431 | ||
13432 | baton = obstack_alloc (&objfile->objfile_obstack, | |
13433 | sizeof (struct dwarf2_locexpr_baton)); | |
13434 | baton->per_cu = cu->per_cu; | |
13435 | gdb_assert (baton->per_cu); | |
13436 | ||
13437 | baton->size = 5 /* DW_OP_call4 */ + 1 /* DW_OP_plus */; | |
13438 | ||
13439 | if (attr_form_is_constant (member_loc)) | |
13440 | { | |
13441 | offset = dwarf2_get_attr_constant_value (member_loc, 0); | |
13442 | baton->size += 1 /* DW_OP_addr */ + cu->header.addr_size; | |
13443 | } | |
13444 | else | |
13445 | baton->size += DW_BLOCK (member_loc)->size; | |
13446 | ||
13447 | ptr = obstack_alloc (&objfile->objfile_obstack, baton->size); | |
13448 | baton->data = ptr; | |
13449 | ||
13450 | *ptr++ = DW_OP_call4; | |
13451 | cu_off = common_die->offset.sect_off - cu->per_cu->offset.sect_off; | |
13452 | store_unsigned_integer (ptr, 4, byte_order, cu_off); | |
13453 | ptr += 4; | |
13454 | ||
13455 | if (attr_form_is_constant (member_loc)) | |
13456 | { | |
13457 | *ptr++ = DW_OP_addr; | |
13458 | store_unsigned_integer (ptr, cu->header.addr_size, byte_order, offset); | |
13459 | ptr += cu->header.addr_size; | |
13460 | } | |
13461 | else | |
13462 | { | |
13463 | /* We have to copy the data here, because DW_OP_call4 will only | |
13464 | use a DW_AT_location attribute. */ | |
13465 | memcpy (ptr, DW_BLOCK (member_loc)->data, DW_BLOCK (member_loc)->size); | |
13466 | ptr += DW_BLOCK (member_loc)->size; | |
13467 | } | |
13468 | ||
13469 | *ptr++ = DW_OP_plus; | |
13470 | gdb_assert (ptr - baton->data == baton->size); | |
13471 | ||
0971de02 | 13472 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 13473 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
0971de02 TT |
13474 | } |
13475 | ||
4357ac6c TT |
13476 | /* Create appropriate locally-scoped variables for all the |
13477 | DW_TAG_common_block entries. Also create a struct common_block | |
13478 | listing all such variables for `info common'. COMMON_BLOCK_DOMAIN | |
13479 | is used to sepate the common blocks name namespace from regular | |
13480 | variable names. */ | |
c906108c SS |
13481 | |
13482 | static void | |
e7c27a73 | 13483 | read_common_block (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13484 | { |
0971de02 TT |
13485 | struct attribute *attr; |
13486 | ||
13487 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
13488 | if (attr) | |
13489 | { | |
13490 | /* Support the .debug_loc offsets. */ | |
13491 | if (attr_form_is_block (attr)) | |
13492 | { | |
13493 | /* Ok. */ | |
13494 | } | |
13495 | else if (attr_form_is_section_offset (attr)) | |
13496 | { | |
13497 | dwarf2_complex_location_expr_complaint (); | |
13498 | attr = NULL; | |
13499 | } | |
13500 | else | |
13501 | { | |
13502 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", | |
13503 | "common block member"); | |
13504 | attr = NULL; | |
13505 | } | |
13506 | } | |
13507 | ||
639d11d3 | 13508 | if (die->child != NULL) |
c906108c | 13509 | { |
4357ac6c TT |
13510 | struct objfile *objfile = cu->objfile; |
13511 | struct die_info *child_die; | |
13512 | size_t n_entries = 0, size; | |
13513 | struct common_block *common_block; | |
13514 | struct symbol *sym; | |
74ac6d43 | 13515 | |
4357ac6c TT |
13516 | for (child_die = die->child; |
13517 | child_die && child_die->tag; | |
13518 | child_die = sibling_die (child_die)) | |
13519 | ++n_entries; | |
13520 | ||
13521 | size = (sizeof (struct common_block) | |
13522 | + (n_entries - 1) * sizeof (struct symbol *)); | |
13523 | common_block = obstack_alloc (&objfile->objfile_obstack, size); | |
13524 | memset (common_block->contents, 0, n_entries * sizeof (struct symbol *)); | |
13525 | common_block->n_entries = 0; | |
13526 | ||
13527 | for (child_die = die->child; | |
13528 | child_die && child_die->tag; | |
13529 | child_die = sibling_die (child_die)) | |
13530 | { | |
13531 | /* Create the symbol in the DW_TAG_common_block block in the current | |
13532 | symbol scope. */ | |
e7c27a73 | 13533 | sym = new_symbol (child_die, NULL, cu); |
0971de02 TT |
13534 | if (sym != NULL) |
13535 | { | |
13536 | struct attribute *member_loc; | |
13537 | ||
13538 | common_block->contents[common_block->n_entries++] = sym; | |
13539 | ||
13540 | member_loc = dwarf2_attr (child_die, DW_AT_data_member_location, | |
13541 | cu); | |
13542 | if (member_loc) | |
13543 | { | |
13544 | /* GDB has handled this for a long time, but it is | |
13545 | not specified by DWARF. It seems to have been | |
13546 | emitted by gfortran at least as recently as: | |
13547 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23057. */ | |
13548 | complaint (&symfile_complaints, | |
13549 | _("Variable in common block has " | |
13550 | "DW_AT_data_member_location " | |
13551 | "- DIE at 0x%x [in module %s]"), | |
4262abfb JK |
13552 | child_die->offset.sect_off, |
13553 | objfile_name (cu->objfile)); | |
0971de02 TT |
13554 | |
13555 | if (attr_form_is_section_offset (member_loc)) | |
13556 | dwarf2_complex_location_expr_complaint (); | |
13557 | else if (attr_form_is_constant (member_loc) | |
13558 | || attr_form_is_block (member_loc)) | |
13559 | { | |
13560 | if (attr) | |
13561 | mark_common_block_symbol_computed (sym, die, attr, | |
13562 | member_loc, cu); | |
13563 | } | |
13564 | else | |
13565 | dwarf2_complex_location_expr_complaint (); | |
13566 | } | |
13567 | } | |
c906108c | 13568 | } |
4357ac6c TT |
13569 | |
13570 | sym = new_symbol (die, objfile_type (objfile)->builtin_void, cu); | |
13571 | SYMBOL_VALUE_COMMON_BLOCK (sym) = common_block; | |
c906108c SS |
13572 | } |
13573 | } | |
13574 | ||
0114d602 | 13575 | /* Create a type for a C++ namespace. */ |
d9fa45fe | 13576 | |
0114d602 DJ |
13577 | static struct type * |
13578 | read_namespace_type (struct die_info *die, struct dwarf2_cu *cu) | |
d9fa45fe | 13579 | { |
e7c27a73 | 13580 | struct objfile *objfile = cu->objfile; |
0114d602 | 13581 | const char *previous_prefix, *name; |
9219021c | 13582 | int is_anonymous; |
0114d602 DJ |
13583 | struct type *type; |
13584 | ||
13585 | /* For extensions, reuse the type of the original namespace. */ | |
13586 | if (dwarf2_attr (die, DW_AT_extension, cu) != NULL) | |
13587 | { | |
13588 | struct die_info *ext_die; | |
13589 | struct dwarf2_cu *ext_cu = cu; | |
9a619af0 | 13590 | |
0114d602 DJ |
13591 | ext_die = dwarf2_extension (die, &ext_cu); |
13592 | type = read_type_die (ext_die, ext_cu); | |
9dc481d3 DE |
13593 | |
13594 | /* EXT_CU may not be the same as CU. | |
02142a6c | 13595 | Ensure TYPE is recorded with CU in die_type_hash. */ |
0114d602 DJ |
13596 | return set_die_type (die, type, cu); |
13597 | } | |
9219021c | 13598 | |
e142c38c | 13599 | name = namespace_name (die, &is_anonymous, cu); |
9219021c DC |
13600 | |
13601 | /* Now build the name of the current namespace. */ | |
13602 | ||
0114d602 DJ |
13603 | previous_prefix = determine_prefix (die, cu); |
13604 | if (previous_prefix[0] != '\0') | |
13605 | name = typename_concat (&objfile->objfile_obstack, | |
f55ee35c | 13606 | previous_prefix, name, 0, cu); |
0114d602 DJ |
13607 | |
13608 | /* Create the type. */ | |
13609 | type = init_type (TYPE_CODE_NAMESPACE, 0, 0, NULL, | |
13610 | objfile); | |
abee88f2 | 13611 | TYPE_NAME (type) = name; |
0114d602 DJ |
13612 | TYPE_TAG_NAME (type) = TYPE_NAME (type); |
13613 | ||
60531b24 | 13614 | return set_die_type (die, type, cu); |
0114d602 DJ |
13615 | } |
13616 | ||
13617 | /* Read a C++ namespace. */ | |
13618 | ||
13619 | static void | |
13620 | read_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
13621 | { | |
13622 | struct objfile *objfile = cu->objfile; | |
0114d602 | 13623 | int is_anonymous; |
9219021c | 13624 | |
5c4e30ca DC |
13625 | /* Add a symbol associated to this if we haven't seen the namespace |
13626 | before. Also, add a using directive if it's an anonymous | |
13627 | namespace. */ | |
9219021c | 13628 | |
f2f0e013 | 13629 | if (dwarf2_attr (die, DW_AT_extension, cu) == NULL) |
5c4e30ca DC |
13630 | { |
13631 | struct type *type; | |
13632 | ||
0114d602 | 13633 | type = read_type_die (die, cu); |
e7c27a73 | 13634 | new_symbol (die, type, cu); |
5c4e30ca | 13635 | |
e8e80198 | 13636 | namespace_name (die, &is_anonymous, cu); |
5c4e30ca | 13637 | if (is_anonymous) |
0114d602 DJ |
13638 | { |
13639 | const char *previous_prefix = determine_prefix (die, cu); | |
9a619af0 | 13640 | |
c0cc3a76 | 13641 | cp_add_using_directive (previous_prefix, TYPE_NAME (type), NULL, |
12aaed36 | 13642 | NULL, NULL, 0, &objfile->objfile_obstack); |
0114d602 | 13643 | } |
5c4e30ca | 13644 | } |
9219021c | 13645 | |
639d11d3 | 13646 | if (die->child != NULL) |
d9fa45fe | 13647 | { |
639d11d3 | 13648 | struct die_info *child_die = die->child; |
6e70227d | 13649 | |
d9fa45fe DC |
13650 | while (child_die && child_die->tag) |
13651 | { | |
e7c27a73 | 13652 | process_die (child_die, cu); |
d9fa45fe DC |
13653 | child_die = sibling_die (child_die); |
13654 | } | |
13655 | } | |
38d518c9 EZ |
13656 | } |
13657 | ||
f55ee35c JK |
13658 | /* Read a Fortran module as type. This DIE can be only a declaration used for |
13659 | imported module. Still we need that type as local Fortran "use ... only" | |
13660 | declaration imports depend on the created type in determine_prefix. */ | |
13661 | ||
13662 | static struct type * | |
13663 | read_module_type (struct die_info *die, struct dwarf2_cu *cu) | |
13664 | { | |
13665 | struct objfile *objfile = cu->objfile; | |
15d034d0 | 13666 | const char *module_name; |
f55ee35c JK |
13667 | struct type *type; |
13668 | ||
13669 | module_name = dwarf2_name (die, cu); | |
13670 | if (!module_name) | |
3e43a32a MS |
13671 | complaint (&symfile_complaints, |
13672 | _("DW_TAG_module has no name, offset 0x%x"), | |
b64f50a1 | 13673 | die->offset.sect_off); |
f55ee35c JK |
13674 | type = init_type (TYPE_CODE_MODULE, 0, 0, module_name, objfile); |
13675 | ||
13676 | /* determine_prefix uses TYPE_TAG_NAME. */ | |
13677 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
13678 | ||
13679 | return set_die_type (die, type, cu); | |
13680 | } | |
13681 | ||
5d7cb8df JK |
13682 | /* Read a Fortran module. */ |
13683 | ||
13684 | static void | |
13685 | read_module (struct die_info *die, struct dwarf2_cu *cu) | |
13686 | { | |
13687 | struct die_info *child_die = die->child; | |
530e8392 KB |
13688 | struct type *type; |
13689 | ||
13690 | type = read_type_die (die, cu); | |
13691 | new_symbol (die, type, cu); | |
5d7cb8df | 13692 | |
5d7cb8df JK |
13693 | while (child_die && child_die->tag) |
13694 | { | |
13695 | process_die (child_die, cu); | |
13696 | child_die = sibling_die (child_die); | |
13697 | } | |
13698 | } | |
13699 | ||
38d518c9 EZ |
13700 | /* Return the name of the namespace represented by DIE. Set |
13701 | *IS_ANONYMOUS to tell whether or not the namespace is an anonymous | |
13702 | namespace. */ | |
13703 | ||
13704 | static const char * | |
e142c38c | 13705 | namespace_name (struct die_info *die, int *is_anonymous, struct dwarf2_cu *cu) |
38d518c9 EZ |
13706 | { |
13707 | struct die_info *current_die; | |
13708 | const char *name = NULL; | |
13709 | ||
13710 | /* Loop through the extensions until we find a name. */ | |
13711 | ||
13712 | for (current_die = die; | |
13713 | current_die != NULL; | |
f2f0e013 | 13714 | current_die = dwarf2_extension (die, &cu)) |
38d518c9 | 13715 | { |
e142c38c | 13716 | name = dwarf2_name (current_die, cu); |
38d518c9 EZ |
13717 | if (name != NULL) |
13718 | break; | |
13719 | } | |
13720 | ||
13721 | /* Is it an anonymous namespace? */ | |
13722 | ||
13723 | *is_anonymous = (name == NULL); | |
13724 | if (*is_anonymous) | |
2b1dbab0 | 13725 | name = CP_ANONYMOUS_NAMESPACE_STR; |
38d518c9 EZ |
13726 | |
13727 | return name; | |
d9fa45fe DC |
13728 | } |
13729 | ||
c906108c SS |
13730 | /* Extract all information from a DW_TAG_pointer_type DIE and add to |
13731 | the user defined type vector. */ | |
13732 | ||
f792889a | 13733 | static struct type * |
e7c27a73 | 13734 | read_tag_pointer_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13735 | { |
5e2b427d | 13736 | struct gdbarch *gdbarch = get_objfile_arch (cu->objfile); |
e7c27a73 | 13737 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 13738 | struct type *type; |
8b2dbe47 KB |
13739 | struct attribute *attr_byte_size; |
13740 | struct attribute *attr_address_class; | |
13741 | int byte_size, addr_class; | |
7e314c57 JK |
13742 | struct type *target_type; |
13743 | ||
13744 | target_type = die_type (die, cu); | |
c906108c | 13745 | |
7e314c57 JK |
13746 | /* The die_type call above may have already set the type for this DIE. */ |
13747 | type = get_die_type (die, cu); | |
13748 | if (type) | |
13749 | return type; | |
13750 | ||
13751 | type = lookup_pointer_type (target_type); | |
8b2dbe47 | 13752 | |
e142c38c | 13753 | attr_byte_size = dwarf2_attr (die, DW_AT_byte_size, cu); |
8b2dbe47 KB |
13754 | if (attr_byte_size) |
13755 | byte_size = DW_UNSND (attr_byte_size); | |
c906108c | 13756 | else |
8b2dbe47 KB |
13757 | byte_size = cu_header->addr_size; |
13758 | ||
e142c38c | 13759 | attr_address_class = dwarf2_attr (die, DW_AT_address_class, cu); |
8b2dbe47 KB |
13760 | if (attr_address_class) |
13761 | addr_class = DW_UNSND (attr_address_class); | |
13762 | else | |
13763 | addr_class = DW_ADDR_none; | |
13764 | ||
13765 | /* If the pointer size or address class is different than the | |
13766 | default, create a type variant marked as such and set the | |
13767 | length accordingly. */ | |
13768 | if (TYPE_LENGTH (type) != byte_size || addr_class != DW_ADDR_none) | |
c906108c | 13769 | { |
5e2b427d | 13770 | if (gdbarch_address_class_type_flags_p (gdbarch)) |
8b2dbe47 KB |
13771 | { |
13772 | int type_flags; | |
13773 | ||
849957d9 | 13774 | type_flags = gdbarch_address_class_type_flags |
5e2b427d | 13775 | (gdbarch, byte_size, addr_class); |
876cecd0 TT |
13776 | gdb_assert ((type_flags & ~TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL) |
13777 | == 0); | |
8b2dbe47 KB |
13778 | type = make_type_with_address_space (type, type_flags); |
13779 | } | |
13780 | else if (TYPE_LENGTH (type) != byte_size) | |
13781 | { | |
3e43a32a MS |
13782 | complaint (&symfile_complaints, |
13783 | _("invalid pointer size %d"), byte_size); | |
8b2dbe47 | 13784 | } |
6e70227d | 13785 | else |
9a619af0 MS |
13786 | { |
13787 | /* Should we also complain about unhandled address classes? */ | |
13788 | } | |
c906108c | 13789 | } |
8b2dbe47 KB |
13790 | |
13791 | TYPE_LENGTH (type) = byte_size; | |
f792889a | 13792 | return set_die_type (die, type, cu); |
c906108c SS |
13793 | } |
13794 | ||
13795 | /* Extract all information from a DW_TAG_ptr_to_member_type DIE and add to | |
13796 | the user defined type vector. */ | |
13797 | ||
f792889a | 13798 | static struct type * |
e7c27a73 | 13799 | read_tag_ptr_to_member_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
13800 | { |
13801 | struct type *type; | |
13802 | struct type *to_type; | |
13803 | struct type *domain; | |
13804 | ||
e7c27a73 DJ |
13805 | to_type = die_type (die, cu); |
13806 | domain = die_containing_type (die, cu); | |
0d5de010 | 13807 | |
7e314c57 JK |
13808 | /* The calls above may have already set the type for this DIE. */ |
13809 | type = get_die_type (die, cu); | |
13810 | if (type) | |
13811 | return type; | |
13812 | ||
0d5de010 DJ |
13813 | if (TYPE_CODE (check_typedef (to_type)) == TYPE_CODE_METHOD) |
13814 | type = lookup_methodptr_type (to_type); | |
7078baeb TT |
13815 | else if (TYPE_CODE (check_typedef (to_type)) == TYPE_CODE_FUNC) |
13816 | { | |
13817 | struct type *new_type = alloc_type (cu->objfile); | |
13818 | ||
13819 | smash_to_method_type (new_type, domain, TYPE_TARGET_TYPE (to_type), | |
13820 | TYPE_FIELDS (to_type), TYPE_NFIELDS (to_type), | |
13821 | TYPE_VARARGS (to_type)); | |
13822 | type = lookup_methodptr_type (new_type); | |
13823 | } | |
0d5de010 DJ |
13824 | else |
13825 | type = lookup_memberptr_type (to_type, domain); | |
c906108c | 13826 | |
f792889a | 13827 | return set_die_type (die, type, cu); |
c906108c SS |
13828 | } |
13829 | ||
13830 | /* Extract all information from a DW_TAG_reference_type DIE and add to | |
13831 | the user defined type vector. */ | |
13832 | ||
f792889a | 13833 | static struct type * |
e7c27a73 | 13834 | read_tag_reference_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13835 | { |
e7c27a73 | 13836 | struct comp_unit_head *cu_header = &cu->header; |
7e314c57 | 13837 | struct type *type, *target_type; |
c906108c SS |
13838 | struct attribute *attr; |
13839 | ||
7e314c57 JK |
13840 | target_type = die_type (die, cu); |
13841 | ||
13842 | /* The die_type call above may have already set the type for this DIE. */ | |
13843 | type = get_die_type (die, cu); | |
13844 | if (type) | |
13845 | return type; | |
13846 | ||
13847 | type = lookup_reference_type (target_type); | |
e142c38c | 13848 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
13849 | if (attr) |
13850 | { | |
13851 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
13852 | } | |
13853 | else | |
13854 | { | |
107d2387 | 13855 | TYPE_LENGTH (type) = cu_header->addr_size; |
c906108c | 13856 | } |
f792889a | 13857 | return set_die_type (die, type, cu); |
c906108c SS |
13858 | } |
13859 | ||
f792889a | 13860 | static struct type * |
e7c27a73 | 13861 | read_tag_const_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13862 | { |
f792889a | 13863 | struct type *base_type, *cv_type; |
c906108c | 13864 | |
e7c27a73 | 13865 | base_type = die_type (die, cu); |
7e314c57 JK |
13866 | |
13867 | /* The die_type call above may have already set the type for this DIE. */ | |
13868 | cv_type = get_die_type (die, cu); | |
13869 | if (cv_type) | |
13870 | return cv_type; | |
13871 | ||
2f608a3a KW |
13872 | /* In case the const qualifier is applied to an array type, the element type |
13873 | is so qualified, not the array type (section 6.7.3 of C99). */ | |
13874 | if (TYPE_CODE (base_type) == TYPE_CODE_ARRAY) | |
13875 | { | |
13876 | struct type *el_type, *inner_array; | |
13877 | ||
13878 | base_type = copy_type (base_type); | |
13879 | inner_array = base_type; | |
13880 | ||
13881 | while (TYPE_CODE (TYPE_TARGET_TYPE (inner_array)) == TYPE_CODE_ARRAY) | |
13882 | { | |
13883 | TYPE_TARGET_TYPE (inner_array) = | |
13884 | copy_type (TYPE_TARGET_TYPE (inner_array)); | |
13885 | inner_array = TYPE_TARGET_TYPE (inner_array); | |
13886 | } | |
13887 | ||
13888 | el_type = TYPE_TARGET_TYPE (inner_array); | |
13889 | TYPE_TARGET_TYPE (inner_array) = | |
13890 | make_cv_type (1, TYPE_VOLATILE (el_type), el_type, NULL); | |
13891 | ||
13892 | return set_die_type (die, base_type, cu); | |
13893 | } | |
13894 | ||
f792889a DJ |
13895 | cv_type = make_cv_type (1, TYPE_VOLATILE (base_type), base_type, 0); |
13896 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
13897 | } |
13898 | ||
f792889a | 13899 | static struct type * |
e7c27a73 | 13900 | read_tag_volatile_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13901 | { |
f792889a | 13902 | struct type *base_type, *cv_type; |
c906108c | 13903 | |
e7c27a73 | 13904 | base_type = die_type (die, cu); |
7e314c57 JK |
13905 | |
13906 | /* The die_type call above may have already set the type for this DIE. */ | |
13907 | cv_type = get_die_type (die, cu); | |
13908 | if (cv_type) | |
13909 | return cv_type; | |
13910 | ||
f792889a DJ |
13911 | cv_type = make_cv_type (TYPE_CONST (base_type), 1, base_type, 0); |
13912 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
13913 | } |
13914 | ||
06d66ee9 TT |
13915 | /* Handle DW_TAG_restrict_type. */ |
13916 | ||
13917 | static struct type * | |
13918 | read_tag_restrict_type (struct die_info *die, struct dwarf2_cu *cu) | |
13919 | { | |
13920 | struct type *base_type, *cv_type; | |
13921 | ||
13922 | base_type = die_type (die, cu); | |
13923 | ||
13924 | /* The die_type call above may have already set the type for this DIE. */ | |
13925 | cv_type = get_die_type (die, cu); | |
13926 | if (cv_type) | |
13927 | return cv_type; | |
13928 | ||
13929 | cv_type = make_restrict_type (base_type); | |
13930 | return set_die_type (die, cv_type, cu); | |
13931 | } | |
13932 | ||
c906108c SS |
13933 | /* Extract all information from a DW_TAG_string_type DIE and add to |
13934 | the user defined type vector. It isn't really a user defined type, | |
13935 | but it behaves like one, with other DIE's using an AT_user_def_type | |
13936 | attribute to reference it. */ | |
13937 | ||
f792889a | 13938 | static struct type * |
e7c27a73 | 13939 | read_tag_string_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13940 | { |
e7c27a73 | 13941 | struct objfile *objfile = cu->objfile; |
3b7538c0 | 13942 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
13943 | struct type *type, *range_type, *index_type, *char_type; |
13944 | struct attribute *attr; | |
13945 | unsigned int length; | |
13946 | ||
e142c38c | 13947 | attr = dwarf2_attr (die, DW_AT_string_length, cu); |
c906108c SS |
13948 | if (attr) |
13949 | { | |
13950 | length = DW_UNSND (attr); | |
13951 | } | |
13952 | else | |
13953 | { | |
0963b4bd | 13954 | /* Check for the DW_AT_byte_size attribute. */ |
e142c38c | 13955 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
b21b22e0 PS |
13956 | if (attr) |
13957 | { | |
13958 | length = DW_UNSND (attr); | |
13959 | } | |
13960 | else | |
13961 | { | |
13962 | length = 1; | |
13963 | } | |
c906108c | 13964 | } |
6ccb9162 | 13965 | |
46bf5051 | 13966 | index_type = objfile_type (objfile)->builtin_int; |
c906108c | 13967 | range_type = create_range_type (NULL, index_type, 1, length); |
3b7538c0 UW |
13968 | char_type = language_string_char_type (cu->language_defn, gdbarch); |
13969 | type = create_string_type (NULL, char_type, range_type); | |
6ccb9162 | 13970 | |
f792889a | 13971 | return set_die_type (die, type, cu); |
c906108c SS |
13972 | } |
13973 | ||
4d804846 JB |
13974 | /* Assuming that DIE corresponds to a function, returns nonzero |
13975 | if the function is prototyped. */ | |
13976 | ||
13977 | static int | |
13978 | prototyped_function_p (struct die_info *die, struct dwarf2_cu *cu) | |
13979 | { | |
13980 | struct attribute *attr; | |
13981 | ||
13982 | attr = dwarf2_attr (die, DW_AT_prototyped, cu); | |
13983 | if (attr && (DW_UNSND (attr) != 0)) | |
13984 | return 1; | |
13985 | ||
13986 | /* The DWARF standard implies that the DW_AT_prototyped attribute | |
13987 | is only meaninful for C, but the concept also extends to other | |
13988 | languages that allow unprototyped functions (Eg: Objective C). | |
13989 | For all other languages, assume that functions are always | |
13990 | prototyped. */ | |
13991 | if (cu->language != language_c | |
13992 | && cu->language != language_objc | |
13993 | && cu->language != language_opencl) | |
13994 | return 1; | |
13995 | ||
13996 | /* RealView does not emit DW_AT_prototyped. We can not distinguish | |
13997 | prototyped and unprototyped functions; default to prototyped, | |
13998 | since that is more common in modern code (and RealView warns | |
13999 | about unprototyped functions). */ | |
14000 | if (producer_is_realview (cu->producer)) | |
14001 | return 1; | |
14002 | ||
14003 | return 0; | |
14004 | } | |
14005 | ||
c906108c SS |
14006 | /* Handle DIES due to C code like: |
14007 | ||
14008 | struct foo | |
c5aa993b JM |
14009 | { |
14010 | int (*funcp)(int a, long l); | |
14011 | int b; | |
14012 | }; | |
c906108c | 14013 | |
0963b4bd | 14014 | ('funcp' generates a DW_TAG_subroutine_type DIE). */ |
c906108c | 14015 | |
f792889a | 14016 | static struct type * |
e7c27a73 | 14017 | read_subroutine_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 14018 | { |
bb5ed363 | 14019 | struct objfile *objfile = cu->objfile; |
0963b4bd MS |
14020 | struct type *type; /* Type that this function returns. */ |
14021 | struct type *ftype; /* Function that returns above type. */ | |
c906108c SS |
14022 | struct attribute *attr; |
14023 | ||
e7c27a73 | 14024 | type = die_type (die, cu); |
7e314c57 JK |
14025 | |
14026 | /* The die_type call above may have already set the type for this DIE. */ | |
14027 | ftype = get_die_type (die, cu); | |
14028 | if (ftype) | |
14029 | return ftype; | |
14030 | ||
0c8b41f1 | 14031 | ftype = lookup_function_type (type); |
c906108c | 14032 | |
4d804846 | 14033 | if (prototyped_function_p (die, cu)) |
a6c727b2 | 14034 | TYPE_PROTOTYPED (ftype) = 1; |
c906108c | 14035 | |
c055b101 CV |
14036 | /* Store the calling convention in the type if it's available in |
14037 | the subroutine die. Otherwise set the calling convention to | |
14038 | the default value DW_CC_normal. */ | |
14039 | attr = dwarf2_attr (die, DW_AT_calling_convention, cu); | |
54fcddd0 UW |
14040 | if (attr) |
14041 | TYPE_CALLING_CONVENTION (ftype) = DW_UNSND (attr); | |
14042 | else if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL")) | |
14043 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_GDB_IBM_OpenCL; | |
14044 | else | |
14045 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_normal; | |
76c10ea2 GM |
14046 | |
14047 | /* We need to add the subroutine type to the die immediately so | |
14048 | we don't infinitely recurse when dealing with parameters | |
0963b4bd | 14049 | declared as the same subroutine type. */ |
76c10ea2 | 14050 | set_die_type (die, ftype, cu); |
6e70227d | 14051 | |
639d11d3 | 14052 | if (die->child != NULL) |
c906108c | 14053 | { |
bb5ed363 | 14054 | struct type *void_type = objfile_type (objfile)->builtin_void; |
c906108c | 14055 | struct die_info *child_die; |
8072405b | 14056 | int nparams, iparams; |
c906108c SS |
14057 | |
14058 | /* Count the number of parameters. | |
14059 | FIXME: GDB currently ignores vararg functions, but knows about | |
14060 | vararg member functions. */ | |
8072405b | 14061 | nparams = 0; |
639d11d3 | 14062 | child_die = die->child; |
c906108c SS |
14063 | while (child_die && child_die->tag) |
14064 | { | |
14065 | if (child_die->tag == DW_TAG_formal_parameter) | |
14066 | nparams++; | |
14067 | else if (child_die->tag == DW_TAG_unspecified_parameters) | |
876cecd0 | 14068 | TYPE_VARARGS (ftype) = 1; |
c906108c SS |
14069 | child_die = sibling_die (child_die); |
14070 | } | |
14071 | ||
14072 | /* Allocate storage for parameters and fill them in. */ | |
14073 | TYPE_NFIELDS (ftype) = nparams; | |
14074 | TYPE_FIELDS (ftype) = (struct field *) | |
ae5a43e0 | 14075 | TYPE_ZALLOC (ftype, nparams * sizeof (struct field)); |
c906108c | 14076 | |
8072405b JK |
14077 | /* TYPE_FIELD_TYPE must never be NULL. Pre-fill the array to ensure it |
14078 | even if we error out during the parameters reading below. */ | |
14079 | for (iparams = 0; iparams < nparams; iparams++) | |
14080 | TYPE_FIELD_TYPE (ftype, iparams) = void_type; | |
14081 | ||
14082 | iparams = 0; | |
639d11d3 | 14083 | child_die = die->child; |
c906108c SS |
14084 | while (child_die && child_die->tag) |
14085 | { | |
14086 | if (child_die->tag == DW_TAG_formal_parameter) | |
14087 | { | |
3ce3b1ba PA |
14088 | struct type *arg_type; |
14089 | ||
14090 | /* DWARF version 2 has no clean way to discern C++ | |
14091 | static and non-static member functions. G++ helps | |
14092 | GDB by marking the first parameter for non-static | |
14093 | member functions (which is the this pointer) as | |
14094 | artificial. We pass this information to | |
14095 | dwarf2_add_member_fn via TYPE_FIELD_ARTIFICIAL. | |
14096 | ||
14097 | DWARF version 3 added DW_AT_object_pointer, which GCC | |
14098 | 4.5 does not yet generate. */ | |
e142c38c | 14099 | attr = dwarf2_attr (child_die, DW_AT_artificial, cu); |
c906108c SS |
14100 | if (attr) |
14101 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = DW_UNSND (attr); | |
14102 | else | |
418835cc KS |
14103 | { |
14104 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; | |
14105 | ||
14106 | /* GCC/43521: In java, the formal parameter | |
14107 | "this" is sometimes not marked with DW_AT_artificial. */ | |
14108 | if (cu->language == language_java) | |
14109 | { | |
14110 | const char *name = dwarf2_name (child_die, cu); | |
9a619af0 | 14111 | |
418835cc KS |
14112 | if (name && !strcmp (name, "this")) |
14113 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 1; | |
14114 | } | |
14115 | } | |
3ce3b1ba PA |
14116 | arg_type = die_type (child_die, cu); |
14117 | ||
14118 | /* RealView does not mark THIS as const, which the testsuite | |
14119 | expects. GCC marks THIS as const in method definitions, | |
14120 | but not in the class specifications (GCC PR 43053). */ | |
14121 | if (cu->language == language_cplus && !TYPE_CONST (arg_type) | |
14122 | && TYPE_FIELD_ARTIFICIAL (ftype, iparams)) | |
14123 | { | |
14124 | int is_this = 0; | |
14125 | struct dwarf2_cu *arg_cu = cu; | |
14126 | const char *name = dwarf2_name (child_die, cu); | |
14127 | ||
14128 | attr = dwarf2_attr (die, DW_AT_object_pointer, cu); | |
14129 | if (attr) | |
14130 | { | |
14131 | /* If the compiler emits this, use it. */ | |
14132 | if (follow_die_ref (die, attr, &arg_cu) == child_die) | |
14133 | is_this = 1; | |
14134 | } | |
14135 | else if (name && strcmp (name, "this") == 0) | |
14136 | /* Function definitions will have the argument names. */ | |
14137 | is_this = 1; | |
14138 | else if (name == NULL && iparams == 0) | |
14139 | /* Declarations may not have the names, so like | |
14140 | elsewhere in GDB, assume an artificial first | |
14141 | argument is "this". */ | |
14142 | is_this = 1; | |
14143 | ||
14144 | if (is_this) | |
14145 | arg_type = make_cv_type (1, TYPE_VOLATILE (arg_type), | |
14146 | arg_type, 0); | |
14147 | } | |
14148 | ||
14149 | TYPE_FIELD_TYPE (ftype, iparams) = arg_type; | |
c906108c SS |
14150 | iparams++; |
14151 | } | |
14152 | child_die = sibling_die (child_die); | |
14153 | } | |
14154 | } | |
14155 | ||
76c10ea2 | 14156 | return ftype; |
c906108c SS |
14157 | } |
14158 | ||
f792889a | 14159 | static struct type * |
e7c27a73 | 14160 | read_typedef (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 14161 | { |
e7c27a73 | 14162 | struct objfile *objfile = cu->objfile; |
0114d602 | 14163 | const char *name = NULL; |
3c8e0968 | 14164 | struct type *this_type, *target_type; |
c906108c | 14165 | |
94af9270 | 14166 | name = dwarf2_full_name (NULL, die, cu); |
f792889a | 14167 | this_type = init_type (TYPE_CODE_TYPEDEF, 0, |
0114d602 | 14168 | TYPE_FLAG_TARGET_STUB, NULL, objfile); |
abee88f2 | 14169 | TYPE_NAME (this_type) = name; |
f792889a | 14170 | set_die_type (die, this_type, cu); |
3c8e0968 DE |
14171 | target_type = die_type (die, cu); |
14172 | if (target_type != this_type) | |
14173 | TYPE_TARGET_TYPE (this_type) = target_type; | |
14174 | else | |
14175 | { | |
14176 | /* Self-referential typedefs are, it seems, not allowed by the DWARF | |
14177 | spec and cause infinite loops in GDB. */ | |
14178 | complaint (&symfile_complaints, | |
14179 | _("Self-referential DW_TAG_typedef " | |
14180 | "- DIE at 0x%x [in module %s]"), | |
4262abfb | 14181 | die->offset.sect_off, objfile_name (objfile)); |
3c8e0968 DE |
14182 | TYPE_TARGET_TYPE (this_type) = NULL; |
14183 | } | |
f792889a | 14184 | return this_type; |
c906108c SS |
14185 | } |
14186 | ||
14187 | /* Find a representation of a given base type and install | |
14188 | it in the TYPE field of the die. */ | |
14189 | ||
f792889a | 14190 | static struct type * |
e7c27a73 | 14191 | read_base_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 14192 | { |
e7c27a73 | 14193 | struct objfile *objfile = cu->objfile; |
c906108c SS |
14194 | struct type *type; |
14195 | struct attribute *attr; | |
14196 | int encoding = 0, size = 0; | |
15d034d0 | 14197 | const char *name; |
6ccb9162 UW |
14198 | enum type_code code = TYPE_CODE_INT; |
14199 | int type_flags = 0; | |
14200 | struct type *target_type = NULL; | |
c906108c | 14201 | |
e142c38c | 14202 | attr = dwarf2_attr (die, DW_AT_encoding, cu); |
c906108c SS |
14203 | if (attr) |
14204 | { | |
14205 | encoding = DW_UNSND (attr); | |
14206 | } | |
e142c38c | 14207 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
14208 | if (attr) |
14209 | { | |
14210 | size = DW_UNSND (attr); | |
14211 | } | |
39cbfefa | 14212 | name = dwarf2_name (die, cu); |
6ccb9162 | 14213 | if (!name) |
c906108c | 14214 | { |
6ccb9162 UW |
14215 | complaint (&symfile_complaints, |
14216 | _("DW_AT_name missing from DW_TAG_base_type")); | |
c906108c | 14217 | } |
6ccb9162 UW |
14218 | |
14219 | switch (encoding) | |
c906108c | 14220 | { |
6ccb9162 UW |
14221 | case DW_ATE_address: |
14222 | /* Turn DW_ATE_address into a void * pointer. */ | |
14223 | code = TYPE_CODE_PTR; | |
14224 | type_flags |= TYPE_FLAG_UNSIGNED; | |
14225 | target_type = init_type (TYPE_CODE_VOID, 1, 0, NULL, objfile); | |
14226 | break; | |
14227 | case DW_ATE_boolean: | |
14228 | code = TYPE_CODE_BOOL; | |
14229 | type_flags |= TYPE_FLAG_UNSIGNED; | |
14230 | break; | |
14231 | case DW_ATE_complex_float: | |
14232 | code = TYPE_CODE_COMPLEX; | |
14233 | target_type = init_type (TYPE_CODE_FLT, size / 2, 0, NULL, objfile); | |
14234 | break; | |
14235 | case DW_ATE_decimal_float: | |
14236 | code = TYPE_CODE_DECFLOAT; | |
14237 | break; | |
14238 | case DW_ATE_float: | |
14239 | code = TYPE_CODE_FLT; | |
14240 | break; | |
14241 | case DW_ATE_signed: | |
14242 | break; | |
14243 | case DW_ATE_unsigned: | |
14244 | type_flags |= TYPE_FLAG_UNSIGNED; | |
3b2b8fea TT |
14245 | if (cu->language == language_fortran |
14246 | && name | |
14247 | && strncmp (name, "character(", sizeof ("character(") - 1) == 0) | |
14248 | code = TYPE_CODE_CHAR; | |
6ccb9162 UW |
14249 | break; |
14250 | case DW_ATE_signed_char: | |
6e70227d | 14251 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea TT |
14252 | || cu->language == language_pascal |
14253 | || cu->language == language_fortran) | |
6ccb9162 UW |
14254 | code = TYPE_CODE_CHAR; |
14255 | break; | |
14256 | case DW_ATE_unsigned_char: | |
868a0084 | 14257 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea TT |
14258 | || cu->language == language_pascal |
14259 | || cu->language == language_fortran) | |
6ccb9162 UW |
14260 | code = TYPE_CODE_CHAR; |
14261 | type_flags |= TYPE_FLAG_UNSIGNED; | |
14262 | break; | |
75079b2b TT |
14263 | case DW_ATE_UTF: |
14264 | /* We just treat this as an integer and then recognize the | |
14265 | type by name elsewhere. */ | |
14266 | break; | |
14267 | ||
6ccb9162 UW |
14268 | default: |
14269 | complaint (&symfile_complaints, _("unsupported DW_AT_encoding: '%s'"), | |
14270 | dwarf_type_encoding_name (encoding)); | |
14271 | break; | |
c906108c | 14272 | } |
6ccb9162 | 14273 | |
0114d602 DJ |
14274 | type = init_type (code, size, type_flags, NULL, objfile); |
14275 | TYPE_NAME (type) = name; | |
6ccb9162 UW |
14276 | TYPE_TARGET_TYPE (type) = target_type; |
14277 | ||
0114d602 | 14278 | if (name && strcmp (name, "char") == 0) |
876cecd0 | 14279 | TYPE_NOSIGN (type) = 1; |
0114d602 | 14280 | |
f792889a | 14281 | return set_die_type (die, type, cu); |
c906108c SS |
14282 | } |
14283 | ||
a02abb62 JB |
14284 | /* Read the given DW_AT_subrange DIE. */ |
14285 | ||
f792889a | 14286 | static struct type * |
a02abb62 JB |
14287 | read_subrange_type (struct die_info *die, struct dwarf2_cu *cu) |
14288 | { | |
4c9ad8c2 | 14289 | struct type *base_type, *orig_base_type; |
a02abb62 JB |
14290 | struct type *range_type; |
14291 | struct attribute *attr; | |
4fae6e18 JK |
14292 | LONGEST low, high; |
14293 | int low_default_is_valid; | |
15d034d0 | 14294 | const char *name; |
43bbcdc2 | 14295 | LONGEST negative_mask; |
e77813c8 | 14296 | |
4c9ad8c2 TT |
14297 | orig_base_type = die_type (die, cu); |
14298 | /* If ORIG_BASE_TYPE is a typedef, it will not be TYPE_UNSIGNED, | |
14299 | whereas the real type might be. So, we use ORIG_BASE_TYPE when | |
14300 | creating the range type, but we use the result of check_typedef | |
14301 | when examining properties of the type. */ | |
14302 | base_type = check_typedef (orig_base_type); | |
a02abb62 | 14303 | |
7e314c57 JK |
14304 | /* The die_type call above may have already set the type for this DIE. */ |
14305 | range_type = get_die_type (die, cu); | |
14306 | if (range_type) | |
14307 | return range_type; | |
14308 | ||
4fae6e18 JK |
14309 | /* Set LOW_DEFAULT_IS_VALID if current language and DWARF version allow |
14310 | omitting DW_AT_lower_bound. */ | |
14311 | switch (cu->language) | |
6e70227d | 14312 | { |
4fae6e18 JK |
14313 | case language_c: |
14314 | case language_cplus: | |
14315 | low = 0; | |
14316 | low_default_is_valid = 1; | |
14317 | break; | |
14318 | case language_fortran: | |
14319 | low = 1; | |
14320 | low_default_is_valid = 1; | |
14321 | break; | |
14322 | case language_d: | |
14323 | case language_java: | |
14324 | case language_objc: | |
14325 | low = 0; | |
14326 | low_default_is_valid = (cu->header.version >= 4); | |
14327 | break; | |
14328 | case language_ada: | |
14329 | case language_m2: | |
14330 | case language_pascal: | |
a02abb62 | 14331 | low = 1; |
4fae6e18 JK |
14332 | low_default_is_valid = (cu->header.version >= 4); |
14333 | break; | |
14334 | default: | |
14335 | low = 0; | |
14336 | low_default_is_valid = 0; | |
14337 | break; | |
a02abb62 JB |
14338 | } |
14339 | ||
dd5e6932 DJ |
14340 | /* FIXME: For variable sized arrays either of these could be |
14341 | a variable rather than a constant value. We'll allow it, | |
14342 | but we don't know how to handle it. */ | |
e142c38c | 14343 | attr = dwarf2_attr (die, DW_AT_lower_bound, cu); |
a02abb62 | 14344 | if (attr) |
4fae6e18 JK |
14345 | low = dwarf2_get_attr_constant_value (attr, low); |
14346 | else if (!low_default_is_valid) | |
14347 | complaint (&symfile_complaints, _("Missing DW_AT_lower_bound " | |
14348 | "- DIE at 0x%x [in module %s]"), | |
4262abfb | 14349 | die->offset.sect_off, objfile_name (cu->objfile)); |
a02abb62 | 14350 | |
e142c38c | 14351 | attr = dwarf2_attr (die, DW_AT_upper_bound, cu); |
a02abb62 | 14352 | if (attr) |
6e70227d | 14353 | { |
7771576e | 14354 | if (attr_form_is_block (attr) || attr_form_is_ref (attr)) |
a02abb62 JB |
14355 | { |
14356 | /* GCC encodes arrays with unspecified or dynamic length | |
e77813c8 | 14357 | with a DW_FORM_block1 attribute or a reference attribute. |
a02abb62 JB |
14358 | FIXME: GDB does not yet know how to handle dynamic |
14359 | arrays properly, treat them as arrays with unspecified | |
14360 | length for now. | |
14361 | ||
14362 | FIXME: jimb/2003-09-22: GDB does not really know | |
14363 | how to handle arrays of unspecified length | |
14364 | either; we just represent them as zero-length | |
14365 | arrays. Choose an appropriate upper bound given | |
14366 | the lower bound we've computed above. */ | |
14367 | high = low - 1; | |
14368 | } | |
14369 | else | |
14370 | high = dwarf2_get_attr_constant_value (attr, 1); | |
14371 | } | |
e77813c8 PM |
14372 | else |
14373 | { | |
14374 | attr = dwarf2_attr (die, DW_AT_count, cu); | |
14375 | if (attr) | |
14376 | { | |
14377 | int count = dwarf2_get_attr_constant_value (attr, 1); | |
14378 | high = low + count - 1; | |
14379 | } | |
c2ff108b JK |
14380 | else |
14381 | { | |
14382 | /* Unspecified array length. */ | |
14383 | high = low - 1; | |
14384 | } | |
e77813c8 PM |
14385 | } |
14386 | ||
14387 | /* Dwarf-2 specifications explicitly allows to create subrange types | |
14388 | without specifying a base type. | |
14389 | In that case, the base type must be set to the type of | |
14390 | the lower bound, upper bound or count, in that order, if any of these | |
14391 | three attributes references an object that has a type. | |
14392 | If no base type is found, the Dwarf-2 specifications say that | |
14393 | a signed integer type of size equal to the size of an address should | |
14394 | be used. | |
14395 | For the following C code: `extern char gdb_int [];' | |
14396 | GCC produces an empty range DIE. | |
14397 | FIXME: muller/2010-05-28: Possible references to object for low bound, | |
0963b4bd | 14398 | high bound or count are not yet handled by this code. */ |
e77813c8 PM |
14399 | if (TYPE_CODE (base_type) == TYPE_CODE_VOID) |
14400 | { | |
14401 | struct objfile *objfile = cu->objfile; | |
14402 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
14403 | int addr_size = gdbarch_addr_bit (gdbarch) /8; | |
14404 | struct type *int_type = objfile_type (objfile)->builtin_int; | |
14405 | ||
14406 | /* Test "int", "long int", and "long long int" objfile types, | |
14407 | and select the first one having a size above or equal to the | |
14408 | architecture address size. */ | |
14409 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
14410 | base_type = int_type; | |
14411 | else | |
14412 | { | |
14413 | int_type = objfile_type (objfile)->builtin_long; | |
14414 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
14415 | base_type = int_type; | |
14416 | else | |
14417 | { | |
14418 | int_type = objfile_type (objfile)->builtin_long_long; | |
14419 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
14420 | base_type = int_type; | |
14421 | } | |
14422 | } | |
14423 | } | |
a02abb62 | 14424 | |
6e70227d | 14425 | negative_mask = |
43bbcdc2 PH |
14426 | (LONGEST) -1 << (TYPE_LENGTH (base_type) * TARGET_CHAR_BIT - 1); |
14427 | if (!TYPE_UNSIGNED (base_type) && (low & negative_mask)) | |
14428 | low |= negative_mask; | |
14429 | if (!TYPE_UNSIGNED (base_type) && (high & negative_mask)) | |
14430 | high |= negative_mask; | |
14431 | ||
4c9ad8c2 | 14432 | range_type = create_range_type (NULL, orig_base_type, low, high); |
a02abb62 | 14433 | |
bbb0eef6 JK |
14434 | /* Mark arrays with dynamic length at least as an array of unspecified |
14435 | length. GDB could check the boundary but before it gets implemented at | |
14436 | least allow accessing the array elements. */ | |
d48323d8 | 14437 | if (attr && attr_form_is_block (attr)) |
bbb0eef6 JK |
14438 | TYPE_HIGH_BOUND_UNDEFINED (range_type) = 1; |
14439 | ||
c2ff108b JK |
14440 | /* Ada expects an empty array on no boundary attributes. */ |
14441 | if (attr == NULL && cu->language != language_ada) | |
14442 | TYPE_HIGH_BOUND_UNDEFINED (range_type) = 1; | |
14443 | ||
39cbfefa DJ |
14444 | name = dwarf2_name (die, cu); |
14445 | if (name) | |
14446 | TYPE_NAME (range_type) = name; | |
6e70227d | 14447 | |
e142c38c | 14448 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
a02abb62 JB |
14449 | if (attr) |
14450 | TYPE_LENGTH (range_type) = DW_UNSND (attr); | |
14451 | ||
7e314c57 JK |
14452 | set_die_type (die, range_type, cu); |
14453 | ||
14454 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
14455 | set_descriptive_type (range_type, die, cu); |
14456 | ||
7e314c57 | 14457 | return range_type; |
a02abb62 | 14458 | } |
6e70227d | 14459 | |
f792889a | 14460 | static struct type * |
81a17f79 JB |
14461 | read_unspecified_type (struct die_info *die, struct dwarf2_cu *cu) |
14462 | { | |
14463 | struct type *type; | |
81a17f79 | 14464 | |
81a17f79 JB |
14465 | /* For now, we only support the C meaning of an unspecified type: void. */ |
14466 | ||
0114d602 DJ |
14467 | type = init_type (TYPE_CODE_VOID, 0, 0, NULL, cu->objfile); |
14468 | TYPE_NAME (type) = dwarf2_name (die, cu); | |
81a17f79 | 14469 | |
f792889a | 14470 | return set_die_type (die, type, cu); |
81a17f79 | 14471 | } |
a02abb62 | 14472 | |
639d11d3 DC |
14473 | /* Read a single die and all its descendents. Set the die's sibling |
14474 | field to NULL; set other fields in the die correctly, and set all | |
14475 | of the descendents' fields correctly. Set *NEW_INFO_PTR to the | |
14476 | location of the info_ptr after reading all of those dies. PARENT | |
14477 | is the parent of the die in question. */ | |
14478 | ||
14479 | static struct die_info * | |
dee91e82 | 14480 | read_die_and_children (const struct die_reader_specs *reader, |
d521ce57 TT |
14481 | const gdb_byte *info_ptr, |
14482 | const gdb_byte **new_info_ptr, | |
dee91e82 | 14483 | struct die_info *parent) |
639d11d3 DC |
14484 | { |
14485 | struct die_info *die; | |
d521ce57 | 14486 | const gdb_byte *cur_ptr; |
639d11d3 DC |
14487 | int has_children; |
14488 | ||
bf6af496 | 14489 | cur_ptr = read_full_die_1 (reader, &die, info_ptr, &has_children, 0); |
1d325ec1 DJ |
14490 | if (die == NULL) |
14491 | { | |
14492 | *new_info_ptr = cur_ptr; | |
14493 | return NULL; | |
14494 | } | |
93311388 | 14495 | store_in_ref_table (die, reader->cu); |
639d11d3 DC |
14496 | |
14497 | if (has_children) | |
bf6af496 | 14498 | die->child = read_die_and_siblings_1 (reader, cur_ptr, new_info_ptr, die); |
639d11d3 DC |
14499 | else |
14500 | { | |
14501 | die->child = NULL; | |
14502 | *new_info_ptr = cur_ptr; | |
14503 | } | |
14504 | ||
14505 | die->sibling = NULL; | |
14506 | die->parent = parent; | |
14507 | return die; | |
14508 | } | |
14509 | ||
14510 | /* Read a die, all of its descendents, and all of its siblings; set | |
14511 | all of the fields of all of the dies correctly. Arguments are as | |
14512 | in read_die_and_children. */ | |
14513 | ||
14514 | static struct die_info * | |
bf6af496 | 14515 | read_die_and_siblings_1 (const struct die_reader_specs *reader, |
d521ce57 TT |
14516 | const gdb_byte *info_ptr, |
14517 | const gdb_byte **new_info_ptr, | |
bf6af496 | 14518 | struct die_info *parent) |
639d11d3 DC |
14519 | { |
14520 | struct die_info *first_die, *last_sibling; | |
d521ce57 | 14521 | const gdb_byte *cur_ptr; |
639d11d3 | 14522 | |
c906108c | 14523 | cur_ptr = info_ptr; |
639d11d3 DC |
14524 | first_die = last_sibling = NULL; |
14525 | ||
14526 | while (1) | |
c906108c | 14527 | { |
639d11d3 | 14528 | struct die_info *die |
dee91e82 | 14529 | = read_die_and_children (reader, cur_ptr, &cur_ptr, parent); |
639d11d3 | 14530 | |
1d325ec1 | 14531 | if (die == NULL) |
c906108c | 14532 | { |
639d11d3 DC |
14533 | *new_info_ptr = cur_ptr; |
14534 | return first_die; | |
c906108c | 14535 | } |
1d325ec1 DJ |
14536 | |
14537 | if (!first_die) | |
14538 | first_die = die; | |
c906108c | 14539 | else |
1d325ec1 DJ |
14540 | last_sibling->sibling = die; |
14541 | ||
14542 | last_sibling = die; | |
c906108c | 14543 | } |
c906108c SS |
14544 | } |
14545 | ||
bf6af496 DE |
14546 | /* Read a die, all of its descendents, and all of its siblings; set |
14547 | all of the fields of all of the dies correctly. Arguments are as | |
14548 | in read_die_and_children. | |
14549 | This the main entry point for reading a DIE and all its children. */ | |
14550 | ||
14551 | static struct die_info * | |
14552 | read_die_and_siblings (const struct die_reader_specs *reader, | |
d521ce57 TT |
14553 | const gdb_byte *info_ptr, |
14554 | const gdb_byte **new_info_ptr, | |
bf6af496 DE |
14555 | struct die_info *parent) |
14556 | { | |
14557 | struct die_info *die = read_die_and_siblings_1 (reader, info_ptr, | |
14558 | new_info_ptr, parent); | |
14559 | ||
14560 | if (dwarf2_die_debug) | |
14561 | { | |
14562 | fprintf_unfiltered (gdb_stdlog, | |
14563 | "Read die from %s@0x%x of %s:\n", | |
a32a8923 | 14564 | get_section_name (reader->die_section), |
bf6af496 DE |
14565 | (unsigned) (info_ptr - reader->die_section->buffer), |
14566 | bfd_get_filename (reader->abfd)); | |
14567 | dump_die (die, dwarf2_die_debug); | |
14568 | } | |
14569 | ||
14570 | return die; | |
14571 | } | |
14572 | ||
3019eac3 DE |
14573 | /* Read a die and all its attributes, leave space for NUM_EXTRA_ATTRS |
14574 | attributes. | |
14575 | The caller is responsible for filling in the extra attributes | |
14576 | and updating (*DIEP)->num_attrs. | |
14577 | Set DIEP to point to a newly allocated die with its information, | |
14578 | except for its child, sibling, and parent fields. | |
14579 | Set HAS_CHILDREN to tell whether the die has children or not. */ | |
93311388 | 14580 | |
d521ce57 | 14581 | static const gdb_byte * |
3019eac3 | 14582 | read_full_die_1 (const struct die_reader_specs *reader, |
d521ce57 | 14583 | struct die_info **diep, const gdb_byte *info_ptr, |
3019eac3 | 14584 | int *has_children, int num_extra_attrs) |
93311388 | 14585 | { |
b64f50a1 JK |
14586 | unsigned int abbrev_number, bytes_read, i; |
14587 | sect_offset offset; | |
93311388 DE |
14588 | struct abbrev_info *abbrev; |
14589 | struct die_info *die; | |
14590 | struct dwarf2_cu *cu = reader->cu; | |
14591 | bfd *abfd = reader->abfd; | |
14592 | ||
b64f50a1 | 14593 | offset.sect_off = info_ptr - reader->buffer; |
93311388 DE |
14594 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
14595 | info_ptr += bytes_read; | |
14596 | if (!abbrev_number) | |
14597 | { | |
14598 | *diep = NULL; | |
14599 | *has_children = 0; | |
14600 | return info_ptr; | |
14601 | } | |
14602 | ||
433df2d4 | 14603 | abbrev = abbrev_table_lookup_abbrev (cu->abbrev_table, abbrev_number); |
93311388 | 14604 | if (!abbrev) |
348e048f DE |
14605 | error (_("Dwarf Error: could not find abbrev number %d [in module %s]"), |
14606 | abbrev_number, | |
14607 | bfd_get_filename (abfd)); | |
14608 | ||
3019eac3 | 14609 | die = dwarf_alloc_die (cu, abbrev->num_attrs + num_extra_attrs); |
93311388 DE |
14610 | die->offset = offset; |
14611 | die->tag = abbrev->tag; | |
14612 | die->abbrev = abbrev_number; | |
14613 | ||
3019eac3 DE |
14614 | /* Make the result usable. |
14615 | The caller needs to update num_attrs after adding the extra | |
14616 | attributes. */ | |
93311388 DE |
14617 | die->num_attrs = abbrev->num_attrs; |
14618 | ||
14619 | for (i = 0; i < abbrev->num_attrs; ++i) | |
dee91e82 DE |
14620 | info_ptr = read_attribute (reader, &die->attrs[i], &abbrev->attrs[i], |
14621 | info_ptr); | |
93311388 DE |
14622 | |
14623 | *diep = die; | |
14624 | *has_children = abbrev->has_children; | |
14625 | return info_ptr; | |
14626 | } | |
14627 | ||
3019eac3 DE |
14628 | /* Read a die and all its attributes. |
14629 | Set DIEP to point to a newly allocated die with its information, | |
14630 | except for its child, sibling, and parent fields. | |
14631 | Set HAS_CHILDREN to tell whether the die has children or not. */ | |
14632 | ||
d521ce57 | 14633 | static const gdb_byte * |
3019eac3 | 14634 | read_full_die (const struct die_reader_specs *reader, |
d521ce57 | 14635 | struct die_info **diep, const gdb_byte *info_ptr, |
3019eac3 DE |
14636 | int *has_children) |
14637 | { | |
d521ce57 | 14638 | const gdb_byte *result; |
bf6af496 DE |
14639 | |
14640 | result = read_full_die_1 (reader, diep, info_ptr, has_children, 0); | |
14641 | ||
14642 | if (dwarf2_die_debug) | |
14643 | { | |
14644 | fprintf_unfiltered (gdb_stdlog, | |
14645 | "Read die from %s@0x%x of %s:\n", | |
a32a8923 | 14646 | get_section_name (reader->die_section), |
bf6af496 DE |
14647 | (unsigned) (info_ptr - reader->die_section->buffer), |
14648 | bfd_get_filename (reader->abfd)); | |
14649 | dump_die (*diep, dwarf2_die_debug); | |
14650 | } | |
14651 | ||
14652 | return result; | |
3019eac3 | 14653 | } |
433df2d4 DE |
14654 | \f |
14655 | /* Abbreviation tables. | |
3019eac3 | 14656 | |
433df2d4 | 14657 | In DWARF version 2, the description of the debugging information is |
c906108c SS |
14658 | stored in a separate .debug_abbrev section. Before we read any |
14659 | dies from a section we read in all abbreviations and install them | |
433df2d4 DE |
14660 | in a hash table. */ |
14661 | ||
14662 | /* Allocate space for a struct abbrev_info object in ABBREV_TABLE. */ | |
14663 | ||
14664 | static struct abbrev_info * | |
14665 | abbrev_table_alloc_abbrev (struct abbrev_table *abbrev_table) | |
14666 | { | |
14667 | struct abbrev_info *abbrev; | |
14668 | ||
14669 | abbrev = (struct abbrev_info *) | |
14670 | obstack_alloc (&abbrev_table->abbrev_obstack, sizeof (struct abbrev_info)); | |
14671 | memset (abbrev, 0, sizeof (struct abbrev_info)); | |
14672 | return abbrev; | |
14673 | } | |
14674 | ||
14675 | /* Add an abbreviation to the table. */ | |
c906108c SS |
14676 | |
14677 | static void | |
433df2d4 DE |
14678 | abbrev_table_add_abbrev (struct abbrev_table *abbrev_table, |
14679 | unsigned int abbrev_number, | |
14680 | struct abbrev_info *abbrev) | |
14681 | { | |
14682 | unsigned int hash_number; | |
14683 | ||
14684 | hash_number = abbrev_number % ABBREV_HASH_SIZE; | |
14685 | abbrev->next = abbrev_table->abbrevs[hash_number]; | |
14686 | abbrev_table->abbrevs[hash_number] = abbrev; | |
14687 | } | |
dee91e82 | 14688 | |
433df2d4 DE |
14689 | /* Look up an abbrev in the table. |
14690 | Returns NULL if the abbrev is not found. */ | |
14691 | ||
14692 | static struct abbrev_info * | |
14693 | abbrev_table_lookup_abbrev (const struct abbrev_table *abbrev_table, | |
14694 | unsigned int abbrev_number) | |
c906108c | 14695 | { |
433df2d4 DE |
14696 | unsigned int hash_number; |
14697 | struct abbrev_info *abbrev; | |
14698 | ||
14699 | hash_number = abbrev_number % ABBREV_HASH_SIZE; | |
14700 | abbrev = abbrev_table->abbrevs[hash_number]; | |
14701 | ||
14702 | while (abbrev) | |
14703 | { | |
14704 | if (abbrev->number == abbrev_number) | |
14705 | return abbrev; | |
14706 | abbrev = abbrev->next; | |
14707 | } | |
14708 | return NULL; | |
14709 | } | |
14710 | ||
14711 | /* Read in an abbrev table. */ | |
14712 | ||
14713 | static struct abbrev_table * | |
14714 | abbrev_table_read_table (struct dwarf2_section_info *section, | |
14715 | sect_offset offset) | |
14716 | { | |
14717 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
a32a8923 | 14718 | bfd *abfd = get_section_bfd_owner (section); |
433df2d4 | 14719 | struct abbrev_table *abbrev_table; |
d521ce57 | 14720 | const gdb_byte *abbrev_ptr; |
c906108c SS |
14721 | struct abbrev_info *cur_abbrev; |
14722 | unsigned int abbrev_number, bytes_read, abbrev_name; | |
433df2d4 | 14723 | unsigned int abbrev_form; |
f3dd6933 DJ |
14724 | struct attr_abbrev *cur_attrs; |
14725 | unsigned int allocated_attrs; | |
c906108c | 14726 | |
433df2d4 | 14727 | abbrev_table = XMALLOC (struct abbrev_table); |
f4dc4d17 | 14728 | abbrev_table->offset = offset; |
433df2d4 DE |
14729 | obstack_init (&abbrev_table->abbrev_obstack); |
14730 | abbrev_table->abbrevs = obstack_alloc (&abbrev_table->abbrev_obstack, | |
14731 | (ABBREV_HASH_SIZE | |
14732 | * sizeof (struct abbrev_info *))); | |
14733 | memset (abbrev_table->abbrevs, 0, | |
14734 | ABBREV_HASH_SIZE * sizeof (struct abbrev_info *)); | |
c906108c | 14735 | |
433df2d4 DE |
14736 | dwarf2_read_section (objfile, section); |
14737 | abbrev_ptr = section->buffer + offset.sect_off; | |
c906108c SS |
14738 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
14739 | abbrev_ptr += bytes_read; | |
14740 | ||
f3dd6933 DJ |
14741 | allocated_attrs = ATTR_ALLOC_CHUNK; |
14742 | cur_attrs = xmalloc (allocated_attrs * sizeof (struct attr_abbrev)); | |
6e70227d | 14743 | |
0963b4bd | 14744 | /* Loop until we reach an abbrev number of 0. */ |
c906108c SS |
14745 | while (abbrev_number) |
14746 | { | |
433df2d4 | 14747 | cur_abbrev = abbrev_table_alloc_abbrev (abbrev_table); |
c906108c SS |
14748 | |
14749 | /* read in abbrev header */ | |
14750 | cur_abbrev->number = abbrev_number; | |
14751 | cur_abbrev->tag = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
14752 | abbrev_ptr += bytes_read; | |
14753 | cur_abbrev->has_children = read_1_byte (abfd, abbrev_ptr); | |
14754 | abbrev_ptr += 1; | |
14755 | ||
14756 | /* now read in declarations */ | |
14757 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
14758 | abbrev_ptr += bytes_read; | |
14759 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
14760 | abbrev_ptr += bytes_read; | |
14761 | while (abbrev_name) | |
14762 | { | |
f3dd6933 | 14763 | if (cur_abbrev->num_attrs == allocated_attrs) |
c906108c | 14764 | { |
f3dd6933 DJ |
14765 | allocated_attrs += ATTR_ALLOC_CHUNK; |
14766 | cur_attrs | |
14767 | = xrealloc (cur_attrs, (allocated_attrs | |
14768 | * sizeof (struct attr_abbrev))); | |
c906108c | 14769 | } |
ae038cb0 | 14770 | |
f3dd6933 DJ |
14771 | cur_attrs[cur_abbrev->num_attrs].name = abbrev_name; |
14772 | cur_attrs[cur_abbrev->num_attrs++].form = abbrev_form; | |
c906108c SS |
14773 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
14774 | abbrev_ptr += bytes_read; | |
14775 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
14776 | abbrev_ptr += bytes_read; | |
14777 | } | |
14778 | ||
433df2d4 | 14779 | cur_abbrev->attrs = obstack_alloc (&abbrev_table->abbrev_obstack, |
f3dd6933 DJ |
14780 | (cur_abbrev->num_attrs |
14781 | * sizeof (struct attr_abbrev))); | |
14782 | memcpy (cur_abbrev->attrs, cur_attrs, | |
14783 | cur_abbrev->num_attrs * sizeof (struct attr_abbrev)); | |
14784 | ||
433df2d4 | 14785 | abbrev_table_add_abbrev (abbrev_table, abbrev_number, cur_abbrev); |
c906108c SS |
14786 | |
14787 | /* Get next abbreviation. | |
14788 | Under Irix6 the abbreviations for a compilation unit are not | |
c5aa993b JM |
14789 | always properly terminated with an abbrev number of 0. |
14790 | Exit loop if we encounter an abbreviation which we have | |
14791 | already read (which means we are about to read the abbreviations | |
14792 | for the next compile unit) or if the end of the abbreviation | |
14793 | table is reached. */ | |
433df2d4 | 14794 | if ((unsigned int) (abbrev_ptr - section->buffer) >= section->size) |
c906108c SS |
14795 | break; |
14796 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
14797 | abbrev_ptr += bytes_read; | |
433df2d4 | 14798 | if (abbrev_table_lookup_abbrev (abbrev_table, abbrev_number) != NULL) |
c906108c SS |
14799 | break; |
14800 | } | |
f3dd6933 DJ |
14801 | |
14802 | xfree (cur_attrs); | |
433df2d4 | 14803 | return abbrev_table; |
c906108c SS |
14804 | } |
14805 | ||
433df2d4 | 14806 | /* Free the resources held by ABBREV_TABLE. */ |
c906108c | 14807 | |
c906108c | 14808 | static void |
433df2d4 | 14809 | abbrev_table_free (struct abbrev_table *abbrev_table) |
c906108c | 14810 | { |
433df2d4 DE |
14811 | obstack_free (&abbrev_table->abbrev_obstack, NULL); |
14812 | xfree (abbrev_table); | |
c906108c SS |
14813 | } |
14814 | ||
f4dc4d17 DE |
14815 | /* Same as abbrev_table_free but as a cleanup. |
14816 | We pass in a pointer to the pointer to the table so that we can | |
14817 | set the pointer to NULL when we're done. It also simplifies | |
14818 | build_type_unit_groups. */ | |
14819 | ||
14820 | static void | |
14821 | abbrev_table_free_cleanup (void *table_ptr) | |
14822 | { | |
14823 | struct abbrev_table **abbrev_table_ptr = table_ptr; | |
14824 | ||
14825 | if (*abbrev_table_ptr != NULL) | |
14826 | abbrev_table_free (*abbrev_table_ptr); | |
14827 | *abbrev_table_ptr = NULL; | |
14828 | } | |
14829 | ||
433df2d4 DE |
14830 | /* Read the abbrev table for CU from ABBREV_SECTION. */ |
14831 | ||
14832 | static void | |
14833 | dwarf2_read_abbrevs (struct dwarf2_cu *cu, | |
14834 | struct dwarf2_section_info *abbrev_section) | |
c906108c | 14835 | { |
433df2d4 DE |
14836 | cu->abbrev_table = |
14837 | abbrev_table_read_table (abbrev_section, cu->header.abbrev_offset); | |
14838 | } | |
c906108c | 14839 | |
433df2d4 | 14840 | /* Release the memory used by the abbrev table for a compilation unit. */ |
c906108c | 14841 | |
433df2d4 DE |
14842 | static void |
14843 | dwarf2_free_abbrev_table (void *ptr_to_cu) | |
14844 | { | |
14845 | struct dwarf2_cu *cu = ptr_to_cu; | |
c906108c | 14846 | |
a2ce51a0 DE |
14847 | if (cu->abbrev_table != NULL) |
14848 | abbrev_table_free (cu->abbrev_table); | |
433df2d4 DE |
14849 | /* Set this to NULL so that we SEGV if we try to read it later, |
14850 | and also because free_comp_unit verifies this is NULL. */ | |
14851 | cu->abbrev_table = NULL; | |
14852 | } | |
14853 | \f | |
72bf9492 DJ |
14854 | /* Returns nonzero if TAG represents a type that we might generate a partial |
14855 | symbol for. */ | |
14856 | ||
14857 | static int | |
14858 | is_type_tag_for_partial (int tag) | |
14859 | { | |
14860 | switch (tag) | |
14861 | { | |
14862 | #if 0 | |
14863 | /* Some types that would be reasonable to generate partial symbols for, | |
14864 | that we don't at present. */ | |
14865 | case DW_TAG_array_type: | |
14866 | case DW_TAG_file_type: | |
14867 | case DW_TAG_ptr_to_member_type: | |
14868 | case DW_TAG_set_type: | |
14869 | case DW_TAG_string_type: | |
14870 | case DW_TAG_subroutine_type: | |
14871 | #endif | |
14872 | case DW_TAG_base_type: | |
14873 | case DW_TAG_class_type: | |
680b30c7 | 14874 | case DW_TAG_interface_type: |
72bf9492 DJ |
14875 | case DW_TAG_enumeration_type: |
14876 | case DW_TAG_structure_type: | |
14877 | case DW_TAG_subrange_type: | |
14878 | case DW_TAG_typedef: | |
14879 | case DW_TAG_union_type: | |
14880 | return 1; | |
14881 | default: | |
14882 | return 0; | |
14883 | } | |
14884 | } | |
14885 | ||
14886 | /* Load all DIEs that are interesting for partial symbols into memory. */ | |
14887 | ||
14888 | static struct partial_die_info * | |
dee91e82 | 14889 | load_partial_dies (const struct die_reader_specs *reader, |
d521ce57 | 14890 | const gdb_byte *info_ptr, int building_psymtab) |
72bf9492 | 14891 | { |
dee91e82 | 14892 | struct dwarf2_cu *cu = reader->cu; |
bb5ed363 | 14893 | struct objfile *objfile = cu->objfile; |
72bf9492 DJ |
14894 | struct partial_die_info *part_die; |
14895 | struct partial_die_info *parent_die, *last_die, *first_die = NULL; | |
14896 | struct abbrev_info *abbrev; | |
14897 | unsigned int bytes_read; | |
5afb4e99 | 14898 | unsigned int load_all = 0; |
72bf9492 DJ |
14899 | int nesting_level = 1; |
14900 | ||
14901 | parent_die = NULL; | |
14902 | last_die = NULL; | |
14903 | ||
7adf1e79 DE |
14904 | gdb_assert (cu->per_cu != NULL); |
14905 | if (cu->per_cu->load_all_dies) | |
5afb4e99 DJ |
14906 | load_all = 1; |
14907 | ||
72bf9492 DJ |
14908 | cu->partial_dies |
14909 | = htab_create_alloc_ex (cu->header.length / 12, | |
14910 | partial_die_hash, | |
14911 | partial_die_eq, | |
14912 | NULL, | |
14913 | &cu->comp_unit_obstack, | |
14914 | hashtab_obstack_allocate, | |
14915 | dummy_obstack_deallocate); | |
14916 | ||
14917 | part_die = obstack_alloc (&cu->comp_unit_obstack, | |
14918 | sizeof (struct partial_die_info)); | |
14919 | ||
14920 | while (1) | |
14921 | { | |
14922 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, cu); | |
14923 | ||
14924 | /* A NULL abbrev means the end of a series of children. */ | |
14925 | if (abbrev == NULL) | |
14926 | { | |
14927 | if (--nesting_level == 0) | |
14928 | { | |
14929 | /* PART_DIE was probably the last thing allocated on the | |
14930 | comp_unit_obstack, so we could call obstack_free | |
14931 | here. We don't do that because the waste is small, | |
14932 | and will be cleaned up when we're done with this | |
14933 | compilation unit. This way, we're also more robust | |
14934 | against other users of the comp_unit_obstack. */ | |
14935 | return first_die; | |
14936 | } | |
14937 | info_ptr += bytes_read; | |
14938 | last_die = parent_die; | |
14939 | parent_die = parent_die->die_parent; | |
14940 | continue; | |
14941 | } | |
14942 | ||
98bfdba5 PA |
14943 | /* Check for template arguments. We never save these; if |
14944 | they're seen, we just mark the parent, and go on our way. */ | |
14945 | if (parent_die != NULL | |
14946 | && cu->language == language_cplus | |
14947 | && (abbrev->tag == DW_TAG_template_type_param | |
14948 | || abbrev->tag == DW_TAG_template_value_param)) | |
14949 | { | |
14950 | parent_die->has_template_arguments = 1; | |
14951 | ||
14952 | if (!load_all) | |
14953 | { | |
14954 | /* We don't need a partial DIE for the template argument. */ | |
dee91e82 | 14955 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
14956 | continue; |
14957 | } | |
14958 | } | |
14959 | ||
0d99eb77 | 14960 | /* We only recurse into c++ subprograms looking for template arguments. |
98bfdba5 PA |
14961 | Skip their other children. */ |
14962 | if (!load_all | |
14963 | && cu->language == language_cplus | |
14964 | && parent_die != NULL | |
14965 | && parent_die->tag == DW_TAG_subprogram) | |
14966 | { | |
dee91e82 | 14967 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
14968 | continue; |
14969 | } | |
14970 | ||
5afb4e99 DJ |
14971 | /* Check whether this DIE is interesting enough to save. Normally |
14972 | we would not be interested in members here, but there may be | |
14973 | later variables referencing them via DW_AT_specification (for | |
14974 | static members). */ | |
14975 | if (!load_all | |
14976 | && !is_type_tag_for_partial (abbrev->tag) | |
72929c62 | 14977 | && abbrev->tag != DW_TAG_constant |
72bf9492 DJ |
14978 | && abbrev->tag != DW_TAG_enumerator |
14979 | && abbrev->tag != DW_TAG_subprogram | |
bc30ff58 | 14980 | && abbrev->tag != DW_TAG_lexical_block |
72bf9492 | 14981 | && abbrev->tag != DW_TAG_variable |
5afb4e99 | 14982 | && abbrev->tag != DW_TAG_namespace |
f55ee35c | 14983 | && abbrev->tag != DW_TAG_module |
95554aad | 14984 | && abbrev->tag != DW_TAG_member |
74921315 KS |
14985 | && abbrev->tag != DW_TAG_imported_unit |
14986 | && abbrev->tag != DW_TAG_imported_declaration) | |
72bf9492 DJ |
14987 | { |
14988 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 14989 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
72bf9492 DJ |
14990 | continue; |
14991 | } | |
14992 | ||
dee91e82 DE |
14993 | info_ptr = read_partial_die (reader, part_die, abbrev, bytes_read, |
14994 | info_ptr); | |
72bf9492 DJ |
14995 | |
14996 | /* This two-pass algorithm for processing partial symbols has a | |
14997 | high cost in cache pressure. Thus, handle some simple cases | |
14998 | here which cover the majority of C partial symbols. DIEs | |
14999 | which neither have specification tags in them, nor could have | |
15000 | specification tags elsewhere pointing at them, can simply be | |
15001 | processed and discarded. | |
15002 | ||
15003 | This segment is also optional; scan_partial_symbols and | |
15004 | add_partial_symbol will handle these DIEs if we chain | |
15005 | them in normally. When compilers which do not emit large | |
15006 | quantities of duplicate debug information are more common, | |
15007 | this code can probably be removed. */ | |
15008 | ||
15009 | /* Any complete simple types at the top level (pretty much all | |
15010 | of them, for a language without namespaces), can be processed | |
15011 | directly. */ | |
15012 | if (parent_die == NULL | |
15013 | && part_die->has_specification == 0 | |
15014 | && part_die->is_declaration == 0 | |
d8228535 | 15015 | && ((part_die->tag == DW_TAG_typedef && !part_die->has_children) |
72bf9492 DJ |
15016 | || part_die->tag == DW_TAG_base_type |
15017 | || part_die->tag == DW_TAG_subrange_type)) | |
15018 | { | |
15019 | if (building_psymtab && part_die->name != NULL) | |
04a679b8 | 15020 | add_psymbol_to_list (part_die->name, strlen (part_die->name), 0, |
72bf9492 | 15021 | VAR_DOMAIN, LOC_TYPEDEF, |
bb5ed363 DE |
15022 | &objfile->static_psymbols, |
15023 | 0, (CORE_ADDR) 0, cu->language, objfile); | |
dee91e82 | 15024 | info_ptr = locate_pdi_sibling (reader, part_die, info_ptr); |
72bf9492 DJ |
15025 | continue; |
15026 | } | |
15027 | ||
d8228535 JK |
15028 | /* The exception for DW_TAG_typedef with has_children above is |
15029 | a workaround of GCC PR debug/47510. In the case of this complaint | |
15030 | type_name_no_tag_or_error will error on such types later. | |
15031 | ||
15032 | GDB skipped children of DW_TAG_typedef by the shortcut above and then | |
15033 | it could not find the child DIEs referenced later, this is checked | |
15034 | above. In correct DWARF DW_TAG_typedef should have no children. */ | |
15035 | ||
15036 | if (part_die->tag == DW_TAG_typedef && part_die->has_children) | |
15037 | complaint (&symfile_complaints, | |
15038 | _("DW_TAG_typedef has childen - GCC PR debug/47510 bug " | |
15039 | "- DIE at 0x%x [in module %s]"), | |
4262abfb | 15040 | part_die->offset.sect_off, objfile_name (objfile)); |
d8228535 | 15041 | |
72bf9492 DJ |
15042 | /* If we're at the second level, and we're an enumerator, and |
15043 | our parent has no specification (meaning possibly lives in a | |
15044 | namespace elsewhere), then we can add the partial symbol now | |
15045 | instead of queueing it. */ | |
15046 | if (part_die->tag == DW_TAG_enumerator | |
15047 | && parent_die != NULL | |
15048 | && parent_die->die_parent == NULL | |
15049 | && parent_die->tag == DW_TAG_enumeration_type | |
15050 | && parent_die->has_specification == 0) | |
15051 | { | |
15052 | if (part_die->name == NULL) | |
3e43a32a MS |
15053 | complaint (&symfile_complaints, |
15054 | _("malformed enumerator DIE ignored")); | |
72bf9492 | 15055 | else if (building_psymtab) |
04a679b8 | 15056 | add_psymbol_to_list (part_die->name, strlen (part_die->name), 0, |
72bf9492 | 15057 | VAR_DOMAIN, LOC_CONST, |
987504bb JJ |
15058 | (cu->language == language_cplus |
15059 | || cu->language == language_java) | |
bb5ed363 DE |
15060 | ? &objfile->global_psymbols |
15061 | : &objfile->static_psymbols, | |
15062 | 0, (CORE_ADDR) 0, cu->language, objfile); | |
72bf9492 | 15063 | |
dee91e82 | 15064 | info_ptr = locate_pdi_sibling (reader, part_die, info_ptr); |
72bf9492 DJ |
15065 | continue; |
15066 | } | |
15067 | ||
15068 | /* We'll save this DIE so link it in. */ | |
15069 | part_die->die_parent = parent_die; | |
15070 | part_die->die_sibling = NULL; | |
15071 | part_die->die_child = NULL; | |
15072 | ||
15073 | if (last_die && last_die == parent_die) | |
15074 | last_die->die_child = part_die; | |
15075 | else if (last_die) | |
15076 | last_die->die_sibling = part_die; | |
15077 | ||
15078 | last_die = part_die; | |
15079 | ||
15080 | if (first_die == NULL) | |
15081 | first_die = part_die; | |
15082 | ||
15083 | /* Maybe add the DIE to the hash table. Not all DIEs that we | |
15084 | find interesting need to be in the hash table, because we | |
15085 | also have the parent/sibling/child chains; only those that we | |
15086 | might refer to by offset later during partial symbol reading. | |
15087 | ||
15088 | For now this means things that might have be the target of a | |
15089 | DW_AT_specification, DW_AT_abstract_origin, or | |
15090 | DW_AT_extension. DW_AT_extension will refer only to | |
15091 | namespaces; DW_AT_abstract_origin refers to functions (and | |
15092 | many things under the function DIE, but we do not recurse | |
15093 | into function DIEs during partial symbol reading) and | |
15094 | possibly variables as well; DW_AT_specification refers to | |
15095 | declarations. Declarations ought to have the DW_AT_declaration | |
15096 | flag. It happens that GCC forgets to put it in sometimes, but | |
15097 | only for functions, not for types. | |
15098 | ||
15099 | Adding more things than necessary to the hash table is harmless | |
15100 | except for the performance cost. Adding too few will result in | |
5afb4e99 DJ |
15101 | wasted time in find_partial_die, when we reread the compilation |
15102 | unit with load_all_dies set. */ | |
72bf9492 | 15103 | |
5afb4e99 | 15104 | if (load_all |
72929c62 | 15105 | || abbrev->tag == DW_TAG_constant |
5afb4e99 | 15106 | || abbrev->tag == DW_TAG_subprogram |
72bf9492 DJ |
15107 | || abbrev->tag == DW_TAG_variable |
15108 | || abbrev->tag == DW_TAG_namespace | |
15109 | || part_die->is_declaration) | |
15110 | { | |
15111 | void **slot; | |
15112 | ||
15113 | slot = htab_find_slot_with_hash (cu->partial_dies, part_die, | |
b64f50a1 | 15114 | part_die->offset.sect_off, INSERT); |
72bf9492 DJ |
15115 | *slot = part_die; |
15116 | } | |
15117 | ||
15118 | part_die = obstack_alloc (&cu->comp_unit_obstack, | |
15119 | sizeof (struct partial_die_info)); | |
15120 | ||
15121 | /* For some DIEs we want to follow their children (if any). For C | |
bc30ff58 | 15122 | we have no reason to follow the children of structures; for other |
98bfdba5 PA |
15123 | languages we have to, so that we can get at method physnames |
15124 | to infer fully qualified class names, for DW_AT_specification, | |
15125 | and for C++ template arguments. For C++, we also look one level | |
15126 | inside functions to find template arguments (if the name of the | |
15127 | function does not already contain the template arguments). | |
bc30ff58 JB |
15128 | |
15129 | For Ada, we need to scan the children of subprograms and lexical | |
15130 | blocks as well because Ada allows the definition of nested | |
15131 | entities that could be interesting for the debugger, such as | |
15132 | nested subprograms for instance. */ | |
72bf9492 | 15133 | if (last_die->has_children |
5afb4e99 DJ |
15134 | && (load_all |
15135 | || last_die->tag == DW_TAG_namespace | |
f55ee35c | 15136 | || last_die->tag == DW_TAG_module |
72bf9492 | 15137 | || last_die->tag == DW_TAG_enumeration_type |
98bfdba5 PA |
15138 | || (cu->language == language_cplus |
15139 | && last_die->tag == DW_TAG_subprogram | |
15140 | && (last_die->name == NULL | |
15141 | || strchr (last_die->name, '<') == NULL)) | |
72bf9492 DJ |
15142 | || (cu->language != language_c |
15143 | && (last_die->tag == DW_TAG_class_type | |
680b30c7 | 15144 | || last_die->tag == DW_TAG_interface_type |
72bf9492 | 15145 | || last_die->tag == DW_TAG_structure_type |
bc30ff58 JB |
15146 | || last_die->tag == DW_TAG_union_type)) |
15147 | || (cu->language == language_ada | |
15148 | && (last_die->tag == DW_TAG_subprogram | |
15149 | || last_die->tag == DW_TAG_lexical_block)))) | |
72bf9492 DJ |
15150 | { |
15151 | nesting_level++; | |
15152 | parent_die = last_die; | |
15153 | continue; | |
15154 | } | |
15155 | ||
15156 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 15157 | info_ptr = locate_pdi_sibling (reader, last_die, info_ptr); |
72bf9492 DJ |
15158 | |
15159 | /* Back to the top, do it again. */ | |
15160 | } | |
15161 | } | |
15162 | ||
c906108c SS |
15163 | /* Read a minimal amount of information into the minimal die structure. */ |
15164 | ||
d521ce57 | 15165 | static const gdb_byte * |
dee91e82 DE |
15166 | read_partial_die (const struct die_reader_specs *reader, |
15167 | struct partial_die_info *part_die, | |
15168 | struct abbrev_info *abbrev, unsigned int abbrev_len, | |
d521ce57 | 15169 | const gdb_byte *info_ptr) |
c906108c | 15170 | { |
dee91e82 | 15171 | struct dwarf2_cu *cu = reader->cu; |
bb5ed363 | 15172 | struct objfile *objfile = cu->objfile; |
d521ce57 | 15173 | const gdb_byte *buffer = reader->buffer; |
fa238c03 | 15174 | unsigned int i; |
c906108c | 15175 | struct attribute attr; |
c5aa993b | 15176 | int has_low_pc_attr = 0; |
c906108c | 15177 | int has_high_pc_attr = 0; |
91da1414 | 15178 | int high_pc_relative = 0; |
c906108c | 15179 | |
72bf9492 | 15180 | memset (part_die, 0, sizeof (struct partial_die_info)); |
c906108c | 15181 | |
b64f50a1 | 15182 | part_die->offset.sect_off = info_ptr - buffer; |
72bf9492 DJ |
15183 | |
15184 | info_ptr += abbrev_len; | |
15185 | ||
15186 | if (abbrev == NULL) | |
15187 | return info_ptr; | |
15188 | ||
c906108c SS |
15189 | part_die->tag = abbrev->tag; |
15190 | part_die->has_children = abbrev->has_children; | |
c906108c SS |
15191 | |
15192 | for (i = 0; i < abbrev->num_attrs; ++i) | |
15193 | { | |
dee91e82 | 15194 | info_ptr = read_attribute (reader, &attr, &abbrev->attrs[i], info_ptr); |
c906108c SS |
15195 | |
15196 | /* Store the data if it is of an attribute we want to keep in a | |
c5aa993b | 15197 | partial symbol table. */ |
c906108c SS |
15198 | switch (attr.name) |
15199 | { | |
15200 | case DW_AT_name: | |
71c25dea TT |
15201 | switch (part_die->tag) |
15202 | { | |
15203 | case DW_TAG_compile_unit: | |
95554aad | 15204 | case DW_TAG_partial_unit: |
348e048f | 15205 | case DW_TAG_type_unit: |
71c25dea TT |
15206 | /* Compilation units have a DW_AT_name that is a filename, not |
15207 | a source language identifier. */ | |
15208 | case DW_TAG_enumeration_type: | |
15209 | case DW_TAG_enumerator: | |
15210 | /* These tags always have simple identifiers already; no need | |
15211 | to canonicalize them. */ | |
15212 | part_die->name = DW_STRING (&attr); | |
15213 | break; | |
15214 | default: | |
15215 | part_die->name | |
15216 | = dwarf2_canonicalize_name (DW_STRING (&attr), cu, | |
bb5ed363 | 15217 | &objfile->objfile_obstack); |
71c25dea TT |
15218 | break; |
15219 | } | |
c906108c | 15220 | break; |
31ef98ae | 15221 | case DW_AT_linkage_name: |
c906108c | 15222 | case DW_AT_MIPS_linkage_name: |
31ef98ae TT |
15223 | /* Note that both forms of linkage name might appear. We |
15224 | assume they will be the same, and we only store the last | |
15225 | one we see. */ | |
94af9270 KS |
15226 | if (cu->language == language_ada) |
15227 | part_die->name = DW_STRING (&attr); | |
abc72ce4 | 15228 | part_die->linkage_name = DW_STRING (&attr); |
c906108c SS |
15229 | break; |
15230 | case DW_AT_low_pc: | |
15231 | has_low_pc_attr = 1; | |
15232 | part_die->lowpc = DW_ADDR (&attr); | |
15233 | break; | |
15234 | case DW_AT_high_pc: | |
15235 | has_high_pc_attr = 1; | |
3019eac3 DE |
15236 | if (attr.form == DW_FORM_addr |
15237 | || attr.form == DW_FORM_GNU_addr_index) | |
91da1414 MW |
15238 | part_die->highpc = DW_ADDR (&attr); |
15239 | else | |
15240 | { | |
15241 | high_pc_relative = 1; | |
15242 | part_die->highpc = DW_UNSND (&attr); | |
15243 | } | |
c906108c SS |
15244 | break; |
15245 | case DW_AT_location: | |
0963b4bd | 15246 | /* Support the .debug_loc offsets. */ |
8e19ed76 PS |
15247 | if (attr_form_is_block (&attr)) |
15248 | { | |
95554aad | 15249 | part_die->d.locdesc = DW_BLOCK (&attr); |
8e19ed76 | 15250 | } |
3690dd37 | 15251 | else if (attr_form_is_section_offset (&attr)) |
8e19ed76 | 15252 | { |
4d3c2250 | 15253 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
15254 | } |
15255 | else | |
15256 | { | |
4d3c2250 KB |
15257 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
15258 | "partial symbol information"); | |
8e19ed76 | 15259 | } |
c906108c | 15260 | break; |
c906108c SS |
15261 | case DW_AT_external: |
15262 | part_die->is_external = DW_UNSND (&attr); | |
15263 | break; | |
15264 | case DW_AT_declaration: | |
15265 | part_die->is_declaration = DW_UNSND (&attr); | |
15266 | break; | |
15267 | case DW_AT_type: | |
15268 | part_die->has_type = 1; | |
15269 | break; | |
15270 | case DW_AT_abstract_origin: | |
15271 | case DW_AT_specification: | |
72bf9492 DJ |
15272 | case DW_AT_extension: |
15273 | part_die->has_specification = 1; | |
c764a876 | 15274 | part_die->spec_offset = dwarf2_get_ref_die_offset (&attr); |
36586728 TT |
15275 | part_die->spec_is_dwz = (attr.form == DW_FORM_GNU_ref_alt |
15276 | || cu->per_cu->is_dwz); | |
c906108c SS |
15277 | break; |
15278 | case DW_AT_sibling: | |
15279 | /* Ignore absolute siblings, they might point outside of | |
15280 | the current compile unit. */ | |
15281 | if (attr.form == DW_FORM_ref_addr) | |
3e43a32a MS |
15282 | complaint (&symfile_complaints, |
15283 | _("ignoring absolute DW_AT_sibling")); | |
c906108c | 15284 | else |
b9502d3f WN |
15285 | { |
15286 | unsigned int off = dwarf2_get_ref_die_offset (&attr).sect_off; | |
15287 | const gdb_byte *sibling_ptr = buffer + off; | |
15288 | ||
15289 | if (sibling_ptr < info_ptr) | |
15290 | complaint (&symfile_complaints, | |
15291 | _("DW_AT_sibling points backwards")); | |
15292 | else | |
15293 | part_die->sibling = sibling_ptr; | |
15294 | } | |
c906108c | 15295 | break; |
fa4028e9 JB |
15296 | case DW_AT_byte_size: |
15297 | part_die->has_byte_size = 1; | |
15298 | break; | |
68511cec CES |
15299 | case DW_AT_calling_convention: |
15300 | /* DWARF doesn't provide a way to identify a program's source-level | |
15301 | entry point. DW_AT_calling_convention attributes are only meant | |
15302 | to describe functions' calling conventions. | |
15303 | ||
15304 | However, because it's a necessary piece of information in | |
15305 | Fortran, and because DW_CC_program is the only piece of debugging | |
15306 | information whose definition refers to a 'main program' at all, | |
15307 | several compilers have begun marking Fortran main programs with | |
15308 | DW_CC_program --- even when those functions use the standard | |
15309 | calling conventions. | |
15310 | ||
15311 | So until DWARF specifies a way to provide this information and | |
15312 | compilers pick up the new representation, we'll support this | |
15313 | practice. */ | |
15314 | if (DW_UNSND (&attr) == DW_CC_program | |
15315 | && cu->language == language_fortran) | |
01f8c46d JK |
15316 | { |
15317 | set_main_name (part_die->name); | |
15318 | ||
15319 | /* As this DIE has a static linkage the name would be difficult | |
15320 | to look up later. */ | |
15321 | language_of_main = language_fortran; | |
15322 | } | |
68511cec | 15323 | break; |
481860b3 GB |
15324 | case DW_AT_inline: |
15325 | if (DW_UNSND (&attr) == DW_INL_inlined | |
15326 | || DW_UNSND (&attr) == DW_INL_declared_inlined) | |
15327 | part_die->may_be_inlined = 1; | |
15328 | break; | |
95554aad TT |
15329 | |
15330 | case DW_AT_import: | |
15331 | if (part_die->tag == DW_TAG_imported_unit) | |
36586728 TT |
15332 | { |
15333 | part_die->d.offset = dwarf2_get_ref_die_offset (&attr); | |
15334 | part_die->is_dwz = (attr.form == DW_FORM_GNU_ref_alt | |
15335 | || cu->per_cu->is_dwz); | |
15336 | } | |
95554aad TT |
15337 | break; |
15338 | ||
c906108c SS |
15339 | default: |
15340 | break; | |
15341 | } | |
15342 | } | |
15343 | ||
91da1414 MW |
15344 | if (high_pc_relative) |
15345 | part_die->highpc += part_die->lowpc; | |
15346 | ||
9373cf26 JK |
15347 | if (has_low_pc_attr && has_high_pc_attr) |
15348 | { | |
15349 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
15350 | eliminate duplicate copies of functions and vtables and such. | |
15351 | The linker will arbitrarily choose one and discard the others. | |
15352 | The AT_*_pc values for such functions refer to local labels in | |
15353 | these sections. If the section from that file was discarded, the | |
15354 | labels are not in the output, so the relocs get a value of 0. | |
15355 | If this is a discarded function, mark the pc bounds as invalid, | |
15356 | so that GDB will ignore it. */ | |
15357 | if (part_die->lowpc == 0 && !dwarf2_per_objfile->has_section_at_zero) | |
15358 | { | |
bb5ed363 | 15359 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9373cf26 JK |
15360 | |
15361 | complaint (&symfile_complaints, | |
15362 | _("DW_AT_low_pc %s is zero " | |
15363 | "for DIE at 0x%x [in module %s]"), | |
15364 | paddress (gdbarch, part_die->lowpc), | |
4262abfb | 15365 | part_die->offset.sect_off, objfile_name (objfile)); |
9373cf26 JK |
15366 | } |
15367 | /* dwarf2_get_pc_bounds has also the strict low < high requirement. */ | |
15368 | else if (part_die->lowpc >= part_die->highpc) | |
15369 | { | |
bb5ed363 | 15370 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9373cf26 JK |
15371 | |
15372 | complaint (&symfile_complaints, | |
15373 | _("DW_AT_low_pc %s is not < DW_AT_high_pc %s " | |
15374 | "for DIE at 0x%x [in module %s]"), | |
15375 | paddress (gdbarch, part_die->lowpc), | |
15376 | paddress (gdbarch, part_die->highpc), | |
4262abfb | 15377 | part_die->offset.sect_off, objfile_name (objfile)); |
9373cf26 JK |
15378 | } |
15379 | else | |
15380 | part_die->has_pc_info = 1; | |
15381 | } | |
85cbf3d3 | 15382 | |
c906108c SS |
15383 | return info_ptr; |
15384 | } | |
15385 | ||
72bf9492 DJ |
15386 | /* Find a cached partial DIE at OFFSET in CU. */ |
15387 | ||
15388 | static struct partial_die_info * | |
b64f50a1 | 15389 | find_partial_die_in_comp_unit (sect_offset offset, struct dwarf2_cu *cu) |
72bf9492 DJ |
15390 | { |
15391 | struct partial_die_info *lookup_die = NULL; | |
15392 | struct partial_die_info part_die; | |
15393 | ||
15394 | part_die.offset = offset; | |
b64f50a1 JK |
15395 | lookup_die = htab_find_with_hash (cu->partial_dies, &part_die, |
15396 | offset.sect_off); | |
72bf9492 | 15397 | |
72bf9492 DJ |
15398 | return lookup_die; |
15399 | } | |
15400 | ||
348e048f DE |
15401 | /* Find a partial DIE at OFFSET, which may or may not be in CU, |
15402 | except in the case of .debug_types DIEs which do not reference | |
15403 | outside their CU (they do however referencing other types via | |
55f1336d | 15404 | DW_FORM_ref_sig8). */ |
72bf9492 DJ |
15405 | |
15406 | static struct partial_die_info * | |
36586728 | 15407 | find_partial_die (sect_offset offset, int offset_in_dwz, struct dwarf2_cu *cu) |
72bf9492 | 15408 | { |
bb5ed363 | 15409 | struct objfile *objfile = cu->objfile; |
5afb4e99 DJ |
15410 | struct dwarf2_per_cu_data *per_cu = NULL; |
15411 | struct partial_die_info *pd = NULL; | |
72bf9492 | 15412 | |
36586728 TT |
15413 | if (offset_in_dwz == cu->per_cu->is_dwz |
15414 | && offset_in_cu_p (&cu->header, offset)) | |
5afb4e99 DJ |
15415 | { |
15416 | pd = find_partial_die_in_comp_unit (offset, cu); | |
15417 | if (pd != NULL) | |
15418 | return pd; | |
0d99eb77 DE |
15419 | /* We missed recording what we needed. |
15420 | Load all dies and try again. */ | |
15421 | per_cu = cu->per_cu; | |
5afb4e99 | 15422 | } |
0d99eb77 DE |
15423 | else |
15424 | { | |
15425 | /* TUs don't reference other CUs/TUs (except via type signatures). */ | |
3019eac3 | 15426 | if (cu->per_cu->is_debug_types) |
0d99eb77 DE |
15427 | { |
15428 | error (_("Dwarf Error: Type Unit at offset 0x%lx contains" | |
15429 | " external reference to offset 0x%lx [in module %s].\n"), | |
15430 | (long) cu->header.offset.sect_off, (long) offset.sect_off, | |
15431 | bfd_get_filename (objfile->obfd)); | |
15432 | } | |
36586728 TT |
15433 | per_cu = dwarf2_find_containing_comp_unit (offset, offset_in_dwz, |
15434 | objfile); | |
72bf9492 | 15435 | |
0d99eb77 DE |
15436 | if (per_cu->cu == NULL || per_cu->cu->partial_dies == NULL) |
15437 | load_partial_comp_unit (per_cu); | |
ae038cb0 | 15438 | |
0d99eb77 DE |
15439 | per_cu->cu->last_used = 0; |
15440 | pd = find_partial_die_in_comp_unit (offset, per_cu->cu); | |
15441 | } | |
5afb4e99 | 15442 | |
dee91e82 DE |
15443 | /* If we didn't find it, and not all dies have been loaded, |
15444 | load them all and try again. */ | |
15445 | ||
5afb4e99 DJ |
15446 | if (pd == NULL && per_cu->load_all_dies == 0) |
15447 | { | |
5afb4e99 | 15448 | per_cu->load_all_dies = 1; |
fd820528 DE |
15449 | |
15450 | /* This is nasty. When we reread the DIEs, somewhere up the call chain | |
15451 | THIS_CU->cu may already be in use. So we can't just free it and | |
15452 | replace its DIEs with the ones we read in. Instead, we leave those | |
15453 | DIEs alone (which can still be in use, e.g. in scan_partial_symbols), | |
15454 | and clobber THIS_CU->cu->partial_dies with the hash table for the new | |
15455 | set. */ | |
dee91e82 | 15456 | load_partial_comp_unit (per_cu); |
5afb4e99 DJ |
15457 | |
15458 | pd = find_partial_die_in_comp_unit (offset, per_cu->cu); | |
15459 | } | |
15460 | ||
15461 | if (pd == NULL) | |
15462 | internal_error (__FILE__, __LINE__, | |
3e43a32a MS |
15463 | _("could not find partial DIE 0x%x " |
15464 | "in cache [from module %s]\n"), | |
b64f50a1 | 15465 | offset.sect_off, bfd_get_filename (objfile->obfd)); |
5afb4e99 | 15466 | return pd; |
72bf9492 DJ |
15467 | } |
15468 | ||
abc72ce4 DE |
15469 | /* See if we can figure out if the class lives in a namespace. We do |
15470 | this by looking for a member function; its demangled name will | |
15471 | contain namespace info, if there is any. */ | |
15472 | ||
15473 | static void | |
15474 | guess_partial_die_structure_name (struct partial_die_info *struct_pdi, | |
15475 | struct dwarf2_cu *cu) | |
15476 | { | |
15477 | /* NOTE: carlton/2003-10-07: Getting the info this way changes | |
15478 | what template types look like, because the demangler | |
15479 | frequently doesn't give the same name as the debug info. We | |
15480 | could fix this by only using the demangled name to get the | |
15481 | prefix (but see comment in read_structure_type). */ | |
15482 | ||
15483 | struct partial_die_info *real_pdi; | |
15484 | struct partial_die_info *child_pdi; | |
15485 | ||
15486 | /* If this DIE (this DIE's specification, if any) has a parent, then | |
15487 | we should not do this. We'll prepend the parent's fully qualified | |
15488 | name when we create the partial symbol. */ | |
15489 | ||
15490 | real_pdi = struct_pdi; | |
15491 | while (real_pdi->has_specification) | |
36586728 TT |
15492 | real_pdi = find_partial_die (real_pdi->spec_offset, |
15493 | real_pdi->spec_is_dwz, cu); | |
abc72ce4 DE |
15494 | |
15495 | if (real_pdi->die_parent != NULL) | |
15496 | return; | |
15497 | ||
15498 | for (child_pdi = struct_pdi->die_child; | |
15499 | child_pdi != NULL; | |
15500 | child_pdi = child_pdi->die_sibling) | |
15501 | { | |
15502 | if (child_pdi->tag == DW_TAG_subprogram | |
15503 | && child_pdi->linkage_name != NULL) | |
15504 | { | |
15505 | char *actual_class_name | |
15506 | = language_class_name_from_physname (cu->language_defn, | |
15507 | child_pdi->linkage_name); | |
15508 | if (actual_class_name != NULL) | |
15509 | { | |
15510 | struct_pdi->name | |
10f0c4bb TT |
15511 | = obstack_copy0 (&cu->objfile->objfile_obstack, |
15512 | actual_class_name, | |
15513 | strlen (actual_class_name)); | |
abc72ce4 DE |
15514 | xfree (actual_class_name); |
15515 | } | |
15516 | break; | |
15517 | } | |
15518 | } | |
15519 | } | |
15520 | ||
72bf9492 DJ |
15521 | /* Adjust PART_DIE before generating a symbol for it. This function |
15522 | may set the is_external flag or change the DIE's name. */ | |
15523 | ||
15524 | static void | |
15525 | fixup_partial_die (struct partial_die_info *part_die, | |
15526 | struct dwarf2_cu *cu) | |
15527 | { | |
abc72ce4 DE |
15528 | /* Once we've fixed up a die, there's no point in doing so again. |
15529 | This also avoids a memory leak if we were to call | |
15530 | guess_partial_die_structure_name multiple times. */ | |
15531 | if (part_die->fixup_called) | |
15532 | return; | |
15533 | ||
72bf9492 DJ |
15534 | /* If we found a reference attribute and the DIE has no name, try |
15535 | to find a name in the referred to DIE. */ | |
15536 | ||
15537 | if (part_die->name == NULL && part_die->has_specification) | |
15538 | { | |
15539 | struct partial_die_info *spec_die; | |
72bf9492 | 15540 | |
36586728 TT |
15541 | spec_die = find_partial_die (part_die->spec_offset, |
15542 | part_die->spec_is_dwz, cu); | |
72bf9492 | 15543 | |
10b3939b | 15544 | fixup_partial_die (spec_die, cu); |
72bf9492 DJ |
15545 | |
15546 | if (spec_die->name) | |
15547 | { | |
15548 | part_die->name = spec_die->name; | |
15549 | ||
15550 | /* Copy DW_AT_external attribute if it is set. */ | |
15551 | if (spec_die->is_external) | |
15552 | part_die->is_external = spec_die->is_external; | |
15553 | } | |
15554 | } | |
15555 | ||
15556 | /* Set default names for some unnamed DIEs. */ | |
72bf9492 DJ |
15557 | |
15558 | if (part_die->name == NULL && part_die->tag == DW_TAG_namespace) | |
2b1dbab0 | 15559 | part_die->name = CP_ANONYMOUS_NAMESPACE_STR; |
72bf9492 | 15560 | |
abc72ce4 DE |
15561 | /* If there is no parent die to provide a namespace, and there are |
15562 | children, see if we can determine the namespace from their linkage | |
122d1940 | 15563 | name. */ |
abc72ce4 | 15564 | if (cu->language == language_cplus |
8b70b953 | 15565 | && !VEC_empty (dwarf2_section_info_def, dwarf2_per_objfile->types) |
abc72ce4 DE |
15566 | && part_die->die_parent == NULL |
15567 | && part_die->has_children | |
15568 | && (part_die->tag == DW_TAG_class_type | |
15569 | || part_die->tag == DW_TAG_structure_type | |
15570 | || part_die->tag == DW_TAG_union_type)) | |
15571 | guess_partial_die_structure_name (part_die, cu); | |
15572 | ||
53832f31 TT |
15573 | /* GCC might emit a nameless struct or union that has a linkage |
15574 | name. See http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
15575 | if (part_die->name == NULL | |
96408a79 SA |
15576 | && (part_die->tag == DW_TAG_class_type |
15577 | || part_die->tag == DW_TAG_interface_type | |
15578 | || part_die->tag == DW_TAG_structure_type | |
15579 | || part_die->tag == DW_TAG_union_type) | |
53832f31 TT |
15580 | && part_die->linkage_name != NULL) |
15581 | { | |
15582 | char *demangled; | |
15583 | ||
8de20a37 | 15584 | demangled = gdb_demangle (part_die->linkage_name, DMGL_TYPES); |
53832f31 TT |
15585 | if (demangled) |
15586 | { | |
96408a79 SA |
15587 | const char *base; |
15588 | ||
15589 | /* Strip any leading namespaces/classes, keep only the base name. | |
15590 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
15591 | base = strrchr (demangled, ':'); | |
15592 | if (base && base > demangled && base[-1] == ':') | |
15593 | base++; | |
15594 | else | |
15595 | base = demangled; | |
15596 | ||
10f0c4bb TT |
15597 | part_die->name = obstack_copy0 (&cu->objfile->objfile_obstack, |
15598 | base, strlen (base)); | |
53832f31 TT |
15599 | xfree (demangled); |
15600 | } | |
15601 | } | |
15602 | ||
abc72ce4 | 15603 | part_die->fixup_called = 1; |
72bf9492 DJ |
15604 | } |
15605 | ||
a8329558 | 15606 | /* Read an attribute value described by an attribute form. */ |
c906108c | 15607 | |
d521ce57 | 15608 | static const gdb_byte * |
dee91e82 DE |
15609 | read_attribute_value (const struct die_reader_specs *reader, |
15610 | struct attribute *attr, unsigned form, | |
d521ce57 | 15611 | const gdb_byte *info_ptr) |
c906108c | 15612 | { |
dee91e82 DE |
15613 | struct dwarf2_cu *cu = reader->cu; |
15614 | bfd *abfd = reader->abfd; | |
e7c27a73 | 15615 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
15616 | unsigned int bytes_read; |
15617 | struct dwarf_block *blk; | |
15618 | ||
a8329558 KW |
15619 | attr->form = form; |
15620 | switch (form) | |
c906108c | 15621 | { |
c906108c | 15622 | case DW_FORM_ref_addr: |
ae411497 | 15623 | if (cu->header.version == 2) |
4568ecf9 | 15624 | DW_UNSND (attr) = read_address (abfd, info_ptr, cu, &bytes_read); |
ae411497 | 15625 | else |
4568ecf9 DE |
15626 | DW_UNSND (attr) = read_offset (abfd, info_ptr, |
15627 | &cu->header, &bytes_read); | |
ae411497 TT |
15628 | info_ptr += bytes_read; |
15629 | break; | |
36586728 TT |
15630 | case DW_FORM_GNU_ref_alt: |
15631 | DW_UNSND (attr) = read_offset (abfd, info_ptr, &cu->header, &bytes_read); | |
15632 | info_ptr += bytes_read; | |
15633 | break; | |
ae411497 | 15634 | case DW_FORM_addr: |
e7c27a73 | 15635 | DW_ADDR (attr) = read_address (abfd, info_ptr, cu, &bytes_read); |
107d2387 | 15636 | info_ptr += bytes_read; |
c906108c SS |
15637 | break; |
15638 | case DW_FORM_block2: | |
7b5a2f43 | 15639 | blk = dwarf_alloc_block (cu); |
c906108c SS |
15640 | blk->size = read_2_bytes (abfd, info_ptr); |
15641 | info_ptr += 2; | |
15642 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
15643 | info_ptr += blk->size; | |
15644 | DW_BLOCK (attr) = blk; | |
15645 | break; | |
15646 | case DW_FORM_block4: | |
7b5a2f43 | 15647 | blk = dwarf_alloc_block (cu); |
c906108c SS |
15648 | blk->size = read_4_bytes (abfd, info_ptr); |
15649 | info_ptr += 4; | |
15650 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
15651 | info_ptr += blk->size; | |
15652 | DW_BLOCK (attr) = blk; | |
15653 | break; | |
15654 | case DW_FORM_data2: | |
15655 | DW_UNSND (attr) = read_2_bytes (abfd, info_ptr); | |
15656 | info_ptr += 2; | |
15657 | break; | |
15658 | case DW_FORM_data4: | |
15659 | DW_UNSND (attr) = read_4_bytes (abfd, info_ptr); | |
15660 | info_ptr += 4; | |
15661 | break; | |
15662 | case DW_FORM_data8: | |
15663 | DW_UNSND (attr) = read_8_bytes (abfd, info_ptr); | |
15664 | info_ptr += 8; | |
15665 | break; | |
2dc7f7b3 TT |
15666 | case DW_FORM_sec_offset: |
15667 | DW_UNSND (attr) = read_offset (abfd, info_ptr, &cu->header, &bytes_read); | |
15668 | info_ptr += bytes_read; | |
15669 | break; | |
c906108c | 15670 | case DW_FORM_string: |
9b1c24c8 | 15671 | DW_STRING (attr) = read_direct_string (abfd, info_ptr, &bytes_read); |
8285870a | 15672 | DW_STRING_IS_CANONICAL (attr) = 0; |
c906108c SS |
15673 | info_ptr += bytes_read; |
15674 | break; | |
4bdf3d34 | 15675 | case DW_FORM_strp: |
36586728 TT |
15676 | if (!cu->per_cu->is_dwz) |
15677 | { | |
15678 | DW_STRING (attr) = read_indirect_string (abfd, info_ptr, cu_header, | |
15679 | &bytes_read); | |
15680 | DW_STRING_IS_CANONICAL (attr) = 0; | |
15681 | info_ptr += bytes_read; | |
15682 | break; | |
15683 | } | |
15684 | /* FALLTHROUGH */ | |
15685 | case DW_FORM_GNU_strp_alt: | |
15686 | { | |
15687 | struct dwz_file *dwz = dwarf2_get_dwz_file (); | |
15688 | LONGEST str_offset = read_offset (abfd, info_ptr, cu_header, | |
15689 | &bytes_read); | |
15690 | ||
15691 | DW_STRING (attr) = read_indirect_string_from_dwz (dwz, str_offset); | |
15692 | DW_STRING_IS_CANONICAL (attr) = 0; | |
15693 | info_ptr += bytes_read; | |
15694 | } | |
4bdf3d34 | 15695 | break; |
2dc7f7b3 | 15696 | case DW_FORM_exprloc: |
c906108c | 15697 | case DW_FORM_block: |
7b5a2f43 | 15698 | blk = dwarf_alloc_block (cu); |
c906108c SS |
15699 | blk->size = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
15700 | info_ptr += bytes_read; | |
15701 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
15702 | info_ptr += blk->size; | |
15703 | DW_BLOCK (attr) = blk; | |
15704 | break; | |
15705 | case DW_FORM_block1: | |
7b5a2f43 | 15706 | blk = dwarf_alloc_block (cu); |
c906108c SS |
15707 | blk->size = read_1_byte (abfd, info_ptr); |
15708 | info_ptr += 1; | |
15709 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
15710 | info_ptr += blk->size; | |
15711 | DW_BLOCK (attr) = blk; | |
15712 | break; | |
15713 | case DW_FORM_data1: | |
15714 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
15715 | info_ptr += 1; | |
15716 | break; | |
15717 | case DW_FORM_flag: | |
15718 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
15719 | info_ptr += 1; | |
15720 | break; | |
2dc7f7b3 TT |
15721 | case DW_FORM_flag_present: |
15722 | DW_UNSND (attr) = 1; | |
15723 | break; | |
c906108c SS |
15724 | case DW_FORM_sdata: |
15725 | DW_SND (attr) = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
15726 | info_ptr += bytes_read; | |
15727 | break; | |
15728 | case DW_FORM_udata: | |
15729 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
15730 | info_ptr += bytes_read; | |
15731 | break; | |
15732 | case DW_FORM_ref1: | |
4568ecf9 DE |
15733 | DW_UNSND (attr) = (cu->header.offset.sect_off |
15734 | + read_1_byte (abfd, info_ptr)); | |
c906108c SS |
15735 | info_ptr += 1; |
15736 | break; | |
15737 | case DW_FORM_ref2: | |
4568ecf9 DE |
15738 | DW_UNSND (attr) = (cu->header.offset.sect_off |
15739 | + read_2_bytes (abfd, info_ptr)); | |
c906108c SS |
15740 | info_ptr += 2; |
15741 | break; | |
15742 | case DW_FORM_ref4: | |
4568ecf9 DE |
15743 | DW_UNSND (attr) = (cu->header.offset.sect_off |
15744 | + read_4_bytes (abfd, info_ptr)); | |
c906108c SS |
15745 | info_ptr += 4; |
15746 | break; | |
613e1657 | 15747 | case DW_FORM_ref8: |
4568ecf9 DE |
15748 | DW_UNSND (attr) = (cu->header.offset.sect_off |
15749 | + read_8_bytes (abfd, info_ptr)); | |
613e1657 KB |
15750 | info_ptr += 8; |
15751 | break; | |
55f1336d | 15752 | case DW_FORM_ref_sig8: |
ac9ec31b | 15753 | DW_SIGNATURE (attr) = read_8_bytes (abfd, info_ptr); |
348e048f DE |
15754 | info_ptr += 8; |
15755 | break; | |
c906108c | 15756 | case DW_FORM_ref_udata: |
4568ecf9 DE |
15757 | DW_UNSND (attr) = (cu->header.offset.sect_off |
15758 | + read_unsigned_leb128 (abfd, info_ptr, &bytes_read)); | |
c906108c SS |
15759 | info_ptr += bytes_read; |
15760 | break; | |
c906108c | 15761 | case DW_FORM_indirect: |
a8329558 KW |
15762 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
15763 | info_ptr += bytes_read; | |
dee91e82 | 15764 | info_ptr = read_attribute_value (reader, attr, form, info_ptr); |
a8329558 | 15765 | break; |
3019eac3 DE |
15766 | case DW_FORM_GNU_addr_index: |
15767 | if (reader->dwo_file == NULL) | |
15768 | { | |
15769 | /* For now flag a hard error. | |
15770 | Later we can turn this into a complaint. */ | |
15771 | error (_("Dwarf Error: %s found in non-DWO CU [in module %s]"), | |
15772 | dwarf_form_name (form), | |
15773 | bfd_get_filename (abfd)); | |
15774 | } | |
15775 | DW_ADDR (attr) = read_addr_index_from_leb128 (cu, info_ptr, &bytes_read); | |
15776 | info_ptr += bytes_read; | |
15777 | break; | |
15778 | case DW_FORM_GNU_str_index: | |
15779 | if (reader->dwo_file == NULL) | |
15780 | { | |
15781 | /* For now flag a hard error. | |
15782 | Later we can turn this into a complaint if warranted. */ | |
15783 | error (_("Dwarf Error: %s found in non-DWO CU [in module %s]"), | |
15784 | dwarf_form_name (form), | |
15785 | bfd_get_filename (abfd)); | |
15786 | } | |
15787 | { | |
15788 | ULONGEST str_index = | |
15789 | read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
15790 | ||
15791 | DW_STRING (attr) = read_str_index (reader, cu, str_index); | |
15792 | DW_STRING_IS_CANONICAL (attr) = 0; | |
15793 | info_ptr += bytes_read; | |
15794 | } | |
15795 | break; | |
c906108c | 15796 | default: |
8a3fe4f8 | 15797 | error (_("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]"), |
659b0389 ML |
15798 | dwarf_form_name (form), |
15799 | bfd_get_filename (abfd)); | |
c906108c | 15800 | } |
28e94949 | 15801 | |
36586728 | 15802 | /* Super hack. */ |
7771576e | 15803 | if (cu->per_cu->is_dwz && attr_form_is_ref (attr)) |
36586728 TT |
15804 | attr->form = DW_FORM_GNU_ref_alt; |
15805 | ||
28e94949 JB |
15806 | /* We have seen instances where the compiler tried to emit a byte |
15807 | size attribute of -1 which ended up being encoded as an unsigned | |
15808 | 0xffffffff. Although 0xffffffff is technically a valid size value, | |
15809 | an object of this size seems pretty unlikely so we can relatively | |
15810 | safely treat these cases as if the size attribute was invalid and | |
15811 | treat them as zero by default. */ | |
15812 | if (attr->name == DW_AT_byte_size | |
15813 | && form == DW_FORM_data4 | |
15814 | && DW_UNSND (attr) >= 0xffffffff) | |
01c66ae6 JB |
15815 | { |
15816 | complaint | |
15817 | (&symfile_complaints, | |
43bbcdc2 PH |
15818 | _("Suspicious DW_AT_byte_size value treated as zero instead of %s"), |
15819 | hex_string (DW_UNSND (attr))); | |
01c66ae6 JB |
15820 | DW_UNSND (attr) = 0; |
15821 | } | |
28e94949 | 15822 | |
c906108c SS |
15823 | return info_ptr; |
15824 | } | |
15825 | ||
a8329558 KW |
15826 | /* Read an attribute described by an abbreviated attribute. */ |
15827 | ||
d521ce57 | 15828 | static const gdb_byte * |
dee91e82 DE |
15829 | read_attribute (const struct die_reader_specs *reader, |
15830 | struct attribute *attr, struct attr_abbrev *abbrev, | |
d521ce57 | 15831 | const gdb_byte *info_ptr) |
a8329558 KW |
15832 | { |
15833 | attr->name = abbrev->name; | |
dee91e82 | 15834 | return read_attribute_value (reader, attr, abbrev->form, info_ptr); |
a8329558 KW |
15835 | } |
15836 | ||
0963b4bd | 15837 | /* Read dwarf information from a buffer. */ |
c906108c SS |
15838 | |
15839 | static unsigned int | |
a1855c1d | 15840 | read_1_byte (bfd *abfd, const gdb_byte *buf) |
c906108c | 15841 | { |
fe1b8b76 | 15842 | return bfd_get_8 (abfd, buf); |
c906108c SS |
15843 | } |
15844 | ||
15845 | static int | |
a1855c1d | 15846 | read_1_signed_byte (bfd *abfd, const gdb_byte *buf) |
c906108c | 15847 | { |
fe1b8b76 | 15848 | return bfd_get_signed_8 (abfd, buf); |
c906108c SS |
15849 | } |
15850 | ||
15851 | static unsigned int | |
a1855c1d | 15852 | read_2_bytes (bfd *abfd, const gdb_byte *buf) |
c906108c | 15853 | { |
fe1b8b76 | 15854 | return bfd_get_16 (abfd, buf); |
c906108c SS |
15855 | } |
15856 | ||
21ae7a4d | 15857 | static int |
a1855c1d | 15858 | read_2_signed_bytes (bfd *abfd, const gdb_byte *buf) |
21ae7a4d JK |
15859 | { |
15860 | return bfd_get_signed_16 (abfd, buf); | |
15861 | } | |
15862 | ||
c906108c | 15863 | static unsigned int |
a1855c1d | 15864 | read_4_bytes (bfd *abfd, const gdb_byte *buf) |
c906108c | 15865 | { |
fe1b8b76 | 15866 | return bfd_get_32 (abfd, buf); |
c906108c SS |
15867 | } |
15868 | ||
21ae7a4d | 15869 | static int |
a1855c1d | 15870 | read_4_signed_bytes (bfd *abfd, const gdb_byte *buf) |
21ae7a4d JK |
15871 | { |
15872 | return bfd_get_signed_32 (abfd, buf); | |
15873 | } | |
15874 | ||
93311388 | 15875 | static ULONGEST |
a1855c1d | 15876 | read_8_bytes (bfd *abfd, const gdb_byte *buf) |
c906108c | 15877 | { |
fe1b8b76 | 15878 | return bfd_get_64 (abfd, buf); |
c906108c SS |
15879 | } |
15880 | ||
15881 | static CORE_ADDR | |
d521ce57 | 15882 | read_address (bfd *abfd, const gdb_byte *buf, struct dwarf2_cu *cu, |
891d2f0b | 15883 | unsigned int *bytes_read) |
c906108c | 15884 | { |
e7c27a73 | 15885 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
15886 | CORE_ADDR retval = 0; |
15887 | ||
107d2387 | 15888 | if (cu_header->signed_addr_p) |
c906108c | 15889 | { |
107d2387 AC |
15890 | switch (cu_header->addr_size) |
15891 | { | |
15892 | case 2: | |
fe1b8b76 | 15893 | retval = bfd_get_signed_16 (abfd, buf); |
107d2387 AC |
15894 | break; |
15895 | case 4: | |
fe1b8b76 | 15896 | retval = bfd_get_signed_32 (abfd, buf); |
107d2387 AC |
15897 | break; |
15898 | case 8: | |
fe1b8b76 | 15899 | retval = bfd_get_signed_64 (abfd, buf); |
107d2387 AC |
15900 | break; |
15901 | default: | |
8e65ff28 | 15902 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 15903 | _("read_address: bad switch, signed [in module %s]"), |
659b0389 | 15904 | bfd_get_filename (abfd)); |
107d2387 AC |
15905 | } |
15906 | } | |
15907 | else | |
15908 | { | |
15909 | switch (cu_header->addr_size) | |
15910 | { | |
15911 | case 2: | |
fe1b8b76 | 15912 | retval = bfd_get_16 (abfd, buf); |
107d2387 AC |
15913 | break; |
15914 | case 4: | |
fe1b8b76 | 15915 | retval = bfd_get_32 (abfd, buf); |
107d2387 AC |
15916 | break; |
15917 | case 8: | |
fe1b8b76 | 15918 | retval = bfd_get_64 (abfd, buf); |
107d2387 AC |
15919 | break; |
15920 | default: | |
8e65ff28 | 15921 | internal_error (__FILE__, __LINE__, |
a73c6dcd MS |
15922 | _("read_address: bad switch, " |
15923 | "unsigned [in module %s]"), | |
659b0389 | 15924 | bfd_get_filename (abfd)); |
107d2387 | 15925 | } |
c906108c | 15926 | } |
64367e0a | 15927 | |
107d2387 AC |
15928 | *bytes_read = cu_header->addr_size; |
15929 | return retval; | |
c906108c SS |
15930 | } |
15931 | ||
f7ef9339 | 15932 | /* Read the initial length from a section. The (draft) DWARF 3 |
613e1657 KB |
15933 | specification allows the initial length to take up either 4 bytes |
15934 | or 12 bytes. If the first 4 bytes are 0xffffffff, then the next 8 | |
15935 | bytes describe the length and all offsets will be 8 bytes in length | |
15936 | instead of 4. | |
15937 | ||
f7ef9339 KB |
15938 | An older, non-standard 64-bit format is also handled by this |
15939 | function. The older format in question stores the initial length | |
15940 | as an 8-byte quantity without an escape value. Lengths greater | |
15941 | than 2^32 aren't very common which means that the initial 4 bytes | |
15942 | is almost always zero. Since a length value of zero doesn't make | |
15943 | sense for the 32-bit format, this initial zero can be considered to | |
15944 | be an escape value which indicates the presence of the older 64-bit | |
15945 | format. As written, the code can't detect (old format) lengths | |
917c78fc MK |
15946 | greater than 4GB. If it becomes necessary to handle lengths |
15947 | somewhat larger than 4GB, we could allow other small values (such | |
15948 | as the non-sensical values of 1, 2, and 3) to also be used as | |
15949 | escape values indicating the presence of the old format. | |
f7ef9339 | 15950 | |
917c78fc MK |
15951 | The value returned via bytes_read should be used to increment the |
15952 | relevant pointer after calling read_initial_length(). | |
c764a876 | 15953 | |
613e1657 KB |
15954 | [ Note: read_initial_length() and read_offset() are based on the |
15955 | document entitled "DWARF Debugging Information Format", revision | |
f7ef9339 | 15956 | 3, draft 8, dated November 19, 2001. This document was obtained |
613e1657 KB |
15957 | from: |
15958 | ||
f7ef9339 | 15959 | http://reality.sgiweb.org/davea/dwarf3-draft8-011125.pdf |
6e70227d | 15960 | |
613e1657 KB |
15961 | This document is only a draft and is subject to change. (So beware.) |
15962 | ||
f7ef9339 | 15963 | Details regarding the older, non-standard 64-bit format were |
917c78fc MK |
15964 | determined empirically by examining 64-bit ELF files produced by |
15965 | the SGI toolchain on an IRIX 6.5 machine. | |
f7ef9339 KB |
15966 | |
15967 | - Kevin, July 16, 2002 | |
613e1657 KB |
15968 | ] */ |
15969 | ||
15970 | static LONGEST | |
d521ce57 | 15971 | read_initial_length (bfd *abfd, const gdb_byte *buf, unsigned int *bytes_read) |
613e1657 | 15972 | { |
fe1b8b76 | 15973 | LONGEST length = bfd_get_32 (abfd, buf); |
613e1657 | 15974 | |
dd373385 | 15975 | if (length == 0xffffffff) |
613e1657 | 15976 | { |
fe1b8b76 | 15977 | length = bfd_get_64 (abfd, buf + 4); |
613e1657 | 15978 | *bytes_read = 12; |
613e1657 | 15979 | } |
dd373385 | 15980 | else if (length == 0) |
f7ef9339 | 15981 | { |
dd373385 | 15982 | /* Handle the (non-standard) 64-bit DWARF2 format used by IRIX. */ |
fe1b8b76 | 15983 | length = bfd_get_64 (abfd, buf); |
f7ef9339 | 15984 | *bytes_read = 8; |
f7ef9339 | 15985 | } |
613e1657 KB |
15986 | else |
15987 | { | |
15988 | *bytes_read = 4; | |
613e1657 KB |
15989 | } |
15990 | ||
c764a876 DE |
15991 | return length; |
15992 | } | |
dd373385 | 15993 | |
c764a876 DE |
15994 | /* Cover function for read_initial_length. |
15995 | Returns the length of the object at BUF, and stores the size of the | |
15996 | initial length in *BYTES_READ and stores the size that offsets will be in | |
15997 | *OFFSET_SIZE. | |
15998 | If the initial length size is not equivalent to that specified in | |
15999 | CU_HEADER then issue a complaint. | |
16000 | This is useful when reading non-comp-unit headers. */ | |
dd373385 | 16001 | |
c764a876 | 16002 | static LONGEST |
d521ce57 | 16003 | read_checked_initial_length_and_offset (bfd *abfd, const gdb_byte *buf, |
c764a876 DE |
16004 | const struct comp_unit_head *cu_header, |
16005 | unsigned int *bytes_read, | |
16006 | unsigned int *offset_size) | |
16007 | { | |
16008 | LONGEST length = read_initial_length (abfd, buf, bytes_read); | |
16009 | ||
16010 | gdb_assert (cu_header->initial_length_size == 4 | |
16011 | || cu_header->initial_length_size == 8 | |
16012 | || cu_header->initial_length_size == 12); | |
16013 | ||
16014 | if (cu_header->initial_length_size != *bytes_read) | |
16015 | complaint (&symfile_complaints, | |
16016 | _("intermixed 32-bit and 64-bit DWARF sections")); | |
dd373385 | 16017 | |
c764a876 | 16018 | *offset_size = (*bytes_read == 4) ? 4 : 8; |
dd373385 | 16019 | return length; |
613e1657 KB |
16020 | } |
16021 | ||
16022 | /* Read an offset from the data stream. The size of the offset is | |
917c78fc | 16023 | given by cu_header->offset_size. */ |
613e1657 KB |
16024 | |
16025 | static LONGEST | |
d521ce57 TT |
16026 | read_offset (bfd *abfd, const gdb_byte *buf, |
16027 | const struct comp_unit_head *cu_header, | |
891d2f0b | 16028 | unsigned int *bytes_read) |
c764a876 DE |
16029 | { |
16030 | LONGEST offset = read_offset_1 (abfd, buf, cu_header->offset_size); | |
9a619af0 | 16031 | |
c764a876 DE |
16032 | *bytes_read = cu_header->offset_size; |
16033 | return offset; | |
16034 | } | |
16035 | ||
16036 | /* Read an offset from the data stream. */ | |
16037 | ||
16038 | static LONGEST | |
d521ce57 | 16039 | read_offset_1 (bfd *abfd, const gdb_byte *buf, unsigned int offset_size) |
613e1657 KB |
16040 | { |
16041 | LONGEST retval = 0; | |
16042 | ||
c764a876 | 16043 | switch (offset_size) |
613e1657 KB |
16044 | { |
16045 | case 4: | |
fe1b8b76 | 16046 | retval = bfd_get_32 (abfd, buf); |
613e1657 KB |
16047 | break; |
16048 | case 8: | |
fe1b8b76 | 16049 | retval = bfd_get_64 (abfd, buf); |
613e1657 KB |
16050 | break; |
16051 | default: | |
8e65ff28 | 16052 | internal_error (__FILE__, __LINE__, |
c764a876 | 16053 | _("read_offset_1: bad switch [in module %s]"), |
659b0389 | 16054 | bfd_get_filename (abfd)); |
613e1657 KB |
16055 | } |
16056 | ||
917c78fc | 16057 | return retval; |
613e1657 KB |
16058 | } |
16059 | ||
d521ce57 TT |
16060 | static const gdb_byte * |
16061 | read_n_bytes (bfd *abfd, const gdb_byte *buf, unsigned int size) | |
c906108c SS |
16062 | { |
16063 | /* If the size of a host char is 8 bits, we can return a pointer | |
16064 | to the buffer, otherwise we have to copy the data to a buffer | |
16065 | allocated on the temporary obstack. */ | |
4bdf3d34 | 16066 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c | 16067 | return buf; |
c906108c SS |
16068 | } |
16069 | ||
d521ce57 TT |
16070 | static const char * |
16071 | read_direct_string (bfd *abfd, const gdb_byte *buf, | |
16072 | unsigned int *bytes_read_ptr) | |
c906108c SS |
16073 | { |
16074 | /* If the size of a host char is 8 bits, we can return a pointer | |
16075 | to the string, otherwise we have to copy the string to a buffer | |
16076 | allocated on the temporary obstack. */ | |
4bdf3d34 | 16077 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c SS |
16078 | if (*buf == '\0') |
16079 | { | |
16080 | *bytes_read_ptr = 1; | |
16081 | return NULL; | |
16082 | } | |
d521ce57 TT |
16083 | *bytes_read_ptr = strlen ((const char *) buf) + 1; |
16084 | return (const char *) buf; | |
4bdf3d34 JJ |
16085 | } |
16086 | ||
d521ce57 | 16087 | static const char * |
cf2c3c16 | 16088 | read_indirect_string_at_offset (bfd *abfd, LONGEST str_offset) |
4bdf3d34 | 16089 | { |
be391dca | 16090 | dwarf2_read_section (dwarf2_per_objfile->objfile, &dwarf2_per_objfile->str); |
dce234bc | 16091 | if (dwarf2_per_objfile->str.buffer == NULL) |
cf2c3c16 TT |
16092 | error (_("DW_FORM_strp used without .debug_str section [in module %s]"), |
16093 | bfd_get_filename (abfd)); | |
dce234bc | 16094 | if (str_offset >= dwarf2_per_objfile->str.size) |
cf2c3c16 TT |
16095 | error (_("DW_FORM_strp pointing outside of " |
16096 | ".debug_str section [in module %s]"), | |
16097 | bfd_get_filename (abfd)); | |
4bdf3d34 | 16098 | gdb_assert (HOST_CHAR_BIT == 8); |
dce234bc | 16099 | if (dwarf2_per_objfile->str.buffer[str_offset] == '\0') |
4bdf3d34 | 16100 | return NULL; |
d521ce57 | 16101 | return (const char *) (dwarf2_per_objfile->str.buffer + str_offset); |
c906108c SS |
16102 | } |
16103 | ||
36586728 TT |
16104 | /* Read a string at offset STR_OFFSET in the .debug_str section from |
16105 | the .dwz file DWZ. Throw an error if the offset is too large. If | |
16106 | the string consists of a single NUL byte, return NULL; otherwise | |
16107 | return a pointer to the string. */ | |
16108 | ||
d521ce57 | 16109 | static const char * |
36586728 TT |
16110 | read_indirect_string_from_dwz (struct dwz_file *dwz, LONGEST str_offset) |
16111 | { | |
16112 | dwarf2_read_section (dwarf2_per_objfile->objfile, &dwz->str); | |
16113 | ||
16114 | if (dwz->str.buffer == NULL) | |
16115 | error (_("DW_FORM_GNU_strp_alt used without .debug_str " | |
16116 | "section [in module %s]"), | |
16117 | bfd_get_filename (dwz->dwz_bfd)); | |
16118 | if (str_offset >= dwz->str.size) | |
16119 | error (_("DW_FORM_GNU_strp_alt pointing outside of " | |
16120 | ".debug_str section [in module %s]"), | |
16121 | bfd_get_filename (dwz->dwz_bfd)); | |
16122 | gdb_assert (HOST_CHAR_BIT == 8); | |
16123 | if (dwz->str.buffer[str_offset] == '\0') | |
16124 | return NULL; | |
d521ce57 | 16125 | return (const char *) (dwz->str.buffer + str_offset); |
36586728 TT |
16126 | } |
16127 | ||
d521ce57 TT |
16128 | static const char * |
16129 | read_indirect_string (bfd *abfd, const gdb_byte *buf, | |
cf2c3c16 TT |
16130 | const struct comp_unit_head *cu_header, |
16131 | unsigned int *bytes_read_ptr) | |
16132 | { | |
16133 | LONGEST str_offset = read_offset (abfd, buf, cu_header, bytes_read_ptr); | |
16134 | ||
16135 | return read_indirect_string_at_offset (abfd, str_offset); | |
16136 | } | |
16137 | ||
12df843f | 16138 | static ULONGEST |
d521ce57 TT |
16139 | read_unsigned_leb128 (bfd *abfd, const gdb_byte *buf, |
16140 | unsigned int *bytes_read_ptr) | |
c906108c | 16141 | { |
12df843f | 16142 | ULONGEST result; |
ce5d95e1 | 16143 | unsigned int num_read; |
c906108c SS |
16144 | int i, shift; |
16145 | unsigned char byte; | |
16146 | ||
16147 | result = 0; | |
16148 | shift = 0; | |
16149 | num_read = 0; | |
16150 | i = 0; | |
16151 | while (1) | |
16152 | { | |
fe1b8b76 | 16153 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
16154 | buf++; |
16155 | num_read++; | |
12df843f | 16156 | result |= ((ULONGEST) (byte & 127) << shift); |
c906108c SS |
16157 | if ((byte & 128) == 0) |
16158 | { | |
16159 | break; | |
16160 | } | |
16161 | shift += 7; | |
16162 | } | |
16163 | *bytes_read_ptr = num_read; | |
16164 | return result; | |
16165 | } | |
16166 | ||
12df843f | 16167 | static LONGEST |
d521ce57 TT |
16168 | read_signed_leb128 (bfd *abfd, const gdb_byte *buf, |
16169 | unsigned int *bytes_read_ptr) | |
c906108c | 16170 | { |
12df843f | 16171 | LONGEST result; |
77e0b926 | 16172 | int i, shift, num_read; |
c906108c SS |
16173 | unsigned char byte; |
16174 | ||
16175 | result = 0; | |
16176 | shift = 0; | |
c906108c SS |
16177 | num_read = 0; |
16178 | i = 0; | |
16179 | while (1) | |
16180 | { | |
fe1b8b76 | 16181 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
16182 | buf++; |
16183 | num_read++; | |
12df843f | 16184 | result |= ((LONGEST) (byte & 127) << shift); |
c906108c SS |
16185 | shift += 7; |
16186 | if ((byte & 128) == 0) | |
16187 | { | |
16188 | break; | |
16189 | } | |
16190 | } | |
77e0b926 | 16191 | if ((shift < 8 * sizeof (result)) && (byte & 0x40)) |
12df843f | 16192 | result |= -(((LONGEST) 1) << shift); |
c906108c SS |
16193 | *bytes_read_ptr = num_read; |
16194 | return result; | |
16195 | } | |
16196 | ||
3019eac3 DE |
16197 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. |
16198 | ADDR_BASE is the DW_AT_GNU_addr_base attribute or zero. | |
16199 | ADDR_SIZE is the size of addresses from the CU header. */ | |
16200 | ||
16201 | static CORE_ADDR | |
16202 | read_addr_index_1 (unsigned int addr_index, ULONGEST addr_base, int addr_size) | |
16203 | { | |
16204 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
16205 | bfd *abfd = objfile->obfd; | |
16206 | const gdb_byte *info_ptr; | |
16207 | ||
16208 | dwarf2_read_section (objfile, &dwarf2_per_objfile->addr); | |
16209 | if (dwarf2_per_objfile->addr.buffer == NULL) | |
16210 | error (_("DW_FORM_addr_index used without .debug_addr section [in module %s]"), | |
4262abfb | 16211 | objfile_name (objfile)); |
3019eac3 DE |
16212 | if (addr_base + addr_index * addr_size >= dwarf2_per_objfile->addr.size) |
16213 | error (_("DW_FORM_addr_index pointing outside of " | |
16214 | ".debug_addr section [in module %s]"), | |
4262abfb | 16215 | objfile_name (objfile)); |
3019eac3 DE |
16216 | info_ptr = (dwarf2_per_objfile->addr.buffer |
16217 | + addr_base + addr_index * addr_size); | |
16218 | if (addr_size == 4) | |
16219 | return bfd_get_32 (abfd, info_ptr); | |
16220 | else | |
16221 | return bfd_get_64 (abfd, info_ptr); | |
16222 | } | |
16223 | ||
16224 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. */ | |
16225 | ||
16226 | static CORE_ADDR | |
16227 | read_addr_index (struct dwarf2_cu *cu, unsigned int addr_index) | |
16228 | { | |
16229 | return read_addr_index_1 (addr_index, cu->addr_base, cu->header.addr_size); | |
16230 | } | |
16231 | ||
16232 | /* Given a pointer to an leb128 value, fetch the value from .debug_addr. */ | |
16233 | ||
16234 | static CORE_ADDR | |
d521ce57 | 16235 | read_addr_index_from_leb128 (struct dwarf2_cu *cu, const gdb_byte *info_ptr, |
3019eac3 DE |
16236 | unsigned int *bytes_read) |
16237 | { | |
16238 | bfd *abfd = cu->objfile->obfd; | |
16239 | unsigned int addr_index = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
16240 | ||
16241 | return read_addr_index (cu, addr_index); | |
16242 | } | |
16243 | ||
16244 | /* Data structure to pass results from dwarf2_read_addr_index_reader | |
16245 | back to dwarf2_read_addr_index. */ | |
16246 | ||
16247 | struct dwarf2_read_addr_index_data | |
16248 | { | |
16249 | ULONGEST addr_base; | |
16250 | int addr_size; | |
16251 | }; | |
16252 | ||
16253 | /* die_reader_func for dwarf2_read_addr_index. */ | |
16254 | ||
16255 | static void | |
16256 | dwarf2_read_addr_index_reader (const struct die_reader_specs *reader, | |
d521ce57 | 16257 | const gdb_byte *info_ptr, |
3019eac3 DE |
16258 | struct die_info *comp_unit_die, |
16259 | int has_children, | |
16260 | void *data) | |
16261 | { | |
16262 | struct dwarf2_cu *cu = reader->cu; | |
16263 | struct dwarf2_read_addr_index_data *aidata = | |
16264 | (struct dwarf2_read_addr_index_data *) data; | |
16265 | ||
16266 | aidata->addr_base = cu->addr_base; | |
16267 | aidata->addr_size = cu->header.addr_size; | |
16268 | } | |
16269 | ||
16270 | /* Given an index in .debug_addr, fetch the value. | |
16271 | NOTE: This can be called during dwarf expression evaluation, | |
16272 | long after the debug information has been read, and thus per_cu->cu | |
16273 | may no longer exist. */ | |
16274 | ||
16275 | CORE_ADDR | |
16276 | dwarf2_read_addr_index (struct dwarf2_per_cu_data *per_cu, | |
16277 | unsigned int addr_index) | |
16278 | { | |
16279 | struct objfile *objfile = per_cu->objfile; | |
16280 | struct dwarf2_cu *cu = per_cu->cu; | |
16281 | ULONGEST addr_base; | |
16282 | int addr_size; | |
16283 | ||
16284 | /* This is intended to be called from outside this file. */ | |
16285 | dw2_setup (objfile); | |
16286 | ||
16287 | /* We need addr_base and addr_size. | |
16288 | If we don't have PER_CU->cu, we have to get it. | |
16289 | Nasty, but the alternative is storing the needed info in PER_CU, | |
16290 | which at this point doesn't seem justified: it's not clear how frequently | |
16291 | it would get used and it would increase the size of every PER_CU. | |
16292 | Entry points like dwarf2_per_cu_addr_size do a similar thing | |
16293 | so we're not in uncharted territory here. | |
16294 | Alas we need to be a bit more complicated as addr_base is contained | |
16295 | in the DIE. | |
16296 | ||
16297 | We don't need to read the entire CU(/TU). | |
16298 | We just need the header and top level die. | |
a1b64ce1 | 16299 | |
3019eac3 | 16300 | IWBN to use the aging mechanism to let us lazily later discard the CU. |
a1b64ce1 | 16301 | For now we skip this optimization. */ |
3019eac3 DE |
16302 | |
16303 | if (cu != NULL) | |
16304 | { | |
16305 | addr_base = cu->addr_base; | |
16306 | addr_size = cu->header.addr_size; | |
16307 | } | |
16308 | else | |
16309 | { | |
16310 | struct dwarf2_read_addr_index_data aidata; | |
16311 | ||
a1b64ce1 DE |
16312 | /* Note: We can't use init_cutu_and_read_dies_simple here, |
16313 | we need addr_base. */ | |
16314 | init_cutu_and_read_dies (per_cu, NULL, 0, 0, | |
16315 | dwarf2_read_addr_index_reader, &aidata); | |
3019eac3 DE |
16316 | addr_base = aidata.addr_base; |
16317 | addr_size = aidata.addr_size; | |
16318 | } | |
16319 | ||
16320 | return read_addr_index_1 (addr_index, addr_base, addr_size); | |
16321 | } | |
16322 | ||
57d63ce2 DE |
16323 | /* Given a DW_FORM_GNU_str_index, fetch the string. |
16324 | This is only used by the Fission support. */ | |
3019eac3 | 16325 | |
d521ce57 | 16326 | static const char * |
3019eac3 DE |
16327 | read_str_index (const struct die_reader_specs *reader, |
16328 | struct dwarf2_cu *cu, ULONGEST str_index) | |
16329 | { | |
16330 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
4262abfb | 16331 | const char *dwo_name = objfile_name (objfile); |
3019eac3 | 16332 | bfd *abfd = objfile->obfd; |
73869dc2 DE |
16333 | struct dwarf2_section_info *str_section = &reader->dwo_file->sections.str; |
16334 | struct dwarf2_section_info *str_offsets_section = | |
16335 | &reader->dwo_file->sections.str_offsets; | |
d521ce57 | 16336 | const gdb_byte *info_ptr; |
3019eac3 | 16337 | ULONGEST str_offset; |
57d63ce2 | 16338 | static const char form_name[] = "DW_FORM_GNU_str_index"; |
3019eac3 | 16339 | |
73869dc2 DE |
16340 | dwarf2_read_section (objfile, str_section); |
16341 | dwarf2_read_section (objfile, str_offsets_section); | |
16342 | if (str_section->buffer == NULL) | |
57d63ce2 | 16343 | error (_("%s used without .debug_str.dwo section" |
3019eac3 | 16344 | " in CU at offset 0x%lx [in module %s]"), |
57d63ce2 | 16345 | form_name, (long) cu->header.offset.sect_off, dwo_name); |
73869dc2 | 16346 | if (str_offsets_section->buffer == NULL) |
57d63ce2 | 16347 | error (_("%s used without .debug_str_offsets.dwo section" |
3019eac3 | 16348 | " in CU at offset 0x%lx [in module %s]"), |
57d63ce2 | 16349 | form_name, (long) cu->header.offset.sect_off, dwo_name); |
73869dc2 | 16350 | if (str_index * cu->header.offset_size >= str_offsets_section->size) |
57d63ce2 | 16351 | error (_("%s pointing outside of .debug_str_offsets.dwo" |
3019eac3 | 16352 | " section in CU at offset 0x%lx [in module %s]"), |
57d63ce2 | 16353 | form_name, (long) cu->header.offset.sect_off, dwo_name); |
73869dc2 | 16354 | info_ptr = (str_offsets_section->buffer |
3019eac3 DE |
16355 | + str_index * cu->header.offset_size); |
16356 | if (cu->header.offset_size == 4) | |
16357 | str_offset = bfd_get_32 (abfd, info_ptr); | |
16358 | else | |
16359 | str_offset = bfd_get_64 (abfd, info_ptr); | |
73869dc2 | 16360 | if (str_offset >= str_section->size) |
57d63ce2 | 16361 | error (_("Offset from %s pointing outside of" |
3019eac3 | 16362 | " .debug_str.dwo section in CU at offset 0x%lx [in module %s]"), |
57d63ce2 | 16363 | form_name, (long) cu->header.offset.sect_off, dwo_name); |
73869dc2 | 16364 | return (const char *) (str_section->buffer + str_offset); |
3019eac3 DE |
16365 | } |
16366 | ||
3019eac3 DE |
16367 | /* Return the length of an LEB128 number in BUF. */ |
16368 | ||
16369 | static int | |
16370 | leb128_size (const gdb_byte *buf) | |
16371 | { | |
16372 | const gdb_byte *begin = buf; | |
16373 | gdb_byte byte; | |
16374 | ||
16375 | while (1) | |
16376 | { | |
16377 | byte = *buf++; | |
16378 | if ((byte & 128) == 0) | |
16379 | return buf - begin; | |
16380 | } | |
16381 | } | |
16382 | ||
c906108c | 16383 | static void |
e142c38c | 16384 | set_cu_language (unsigned int lang, struct dwarf2_cu *cu) |
c906108c SS |
16385 | { |
16386 | switch (lang) | |
16387 | { | |
16388 | case DW_LANG_C89: | |
76bee0cc | 16389 | case DW_LANG_C99: |
c906108c | 16390 | case DW_LANG_C: |
d1be3247 | 16391 | case DW_LANG_UPC: |
e142c38c | 16392 | cu->language = language_c; |
c906108c SS |
16393 | break; |
16394 | case DW_LANG_C_plus_plus: | |
e142c38c | 16395 | cu->language = language_cplus; |
c906108c | 16396 | break; |
6aecb9c2 JB |
16397 | case DW_LANG_D: |
16398 | cu->language = language_d; | |
16399 | break; | |
c906108c SS |
16400 | case DW_LANG_Fortran77: |
16401 | case DW_LANG_Fortran90: | |
b21b22e0 | 16402 | case DW_LANG_Fortran95: |
e142c38c | 16403 | cu->language = language_fortran; |
c906108c | 16404 | break; |
a766d390 DE |
16405 | case DW_LANG_Go: |
16406 | cu->language = language_go; | |
16407 | break; | |
c906108c | 16408 | case DW_LANG_Mips_Assembler: |
e142c38c | 16409 | cu->language = language_asm; |
c906108c | 16410 | break; |
bebd888e | 16411 | case DW_LANG_Java: |
e142c38c | 16412 | cu->language = language_java; |
bebd888e | 16413 | break; |
c906108c | 16414 | case DW_LANG_Ada83: |
8aaf0b47 | 16415 | case DW_LANG_Ada95: |
bc5f45f8 JB |
16416 | cu->language = language_ada; |
16417 | break; | |
72019c9c GM |
16418 | case DW_LANG_Modula2: |
16419 | cu->language = language_m2; | |
16420 | break; | |
fe8e67fd PM |
16421 | case DW_LANG_Pascal83: |
16422 | cu->language = language_pascal; | |
16423 | break; | |
22566fbd DJ |
16424 | case DW_LANG_ObjC: |
16425 | cu->language = language_objc; | |
16426 | break; | |
c906108c SS |
16427 | case DW_LANG_Cobol74: |
16428 | case DW_LANG_Cobol85: | |
c906108c | 16429 | default: |
e142c38c | 16430 | cu->language = language_minimal; |
c906108c SS |
16431 | break; |
16432 | } | |
e142c38c | 16433 | cu->language_defn = language_def (cu->language); |
c906108c SS |
16434 | } |
16435 | ||
16436 | /* Return the named attribute or NULL if not there. */ | |
16437 | ||
16438 | static struct attribute * | |
e142c38c | 16439 | dwarf2_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) |
c906108c | 16440 | { |
a48e046c | 16441 | for (;;) |
c906108c | 16442 | { |
a48e046c TT |
16443 | unsigned int i; |
16444 | struct attribute *spec = NULL; | |
16445 | ||
16446 | for (i = 0; i < die->num_attrs; ++i) | |
16447 | { | |
16448 | if (die->attrs[i].name == name) | |
16449 | return &die->attrs[i]; | |
16450 | if (die->attrs[i].name == DW_AT_specification | |
16451 | || die->attrs[i].name == DW_AT_abstract_origin) | |
16452 | spec = &die->attrs[i]; | |
16453 | } | |
16454 | ||
16455 | if (!spec) | |
16456 | break; | |
c906108c | 16457 | |
f2f0e013 | 16458 | die = follow_die_ref (die, spec, &cu); |
f2f0e013 | 16459 | } |
c5aa993b | 16460 | |
c906108c SS |
16461 | return NULL; |
16462 | } | |
16463 | ||
348e048f DE |
16464 | /* Return the named attribute or NULL if not there, |
16465 | but do not follow DW_AT_specification, etc. | |
16466 | This is for use in contexts where we're reading .debug_types dies. | |
16467 | Following DW_AT_specification, DW_AT_abstract_origin will take us | |
16468 | back up the chain, and we want to go down. */ | |
16469 | ||
16470 | static struct attribute * | |
45e58e77 | 16471 | dwarf2_attr_no_follow (struct die_info *die, unsigned int name) |
348e048f DE |
16472 | { |
16473 | unsigned int i; | |
16474 | ||
16475 | for (i = 0; i < die->num_attrs; ++i) | |
16476 | if (die->attrs[i].name == name) | |
16477 | return &die->attrs[i]; | |
16478 | ||
16479 | return NULL; | |
16480 | } | |
16481 | ||
05cf31d1 JB |
16482 | /* Return non-zero iff the attribute NAME is defined for the given DIE, |
16483 | and holds a non-zero value. This function should only be used for | |
2dc7f7b3 | 16484 | DW_FORM_flag or DW_FORM_flag_present attributes. */ |
05cf31d1 JB |
16485 | |
16486 | static int | |
16487 | dwarf2_flag_true_p (struct die_info *die, unsigned name, struct dwarf2_cu *cu) | |
16488 | { | |
16489 | struct attribute *attr = dwarf2_attr (die, name, cu); | |
16490 | ||
16491 | return (attr && DW_UNSND (attr)); | |
16492 | } | |
16493 | ||
3ca72b44 | 16494 | static int |
e142c38c | 16495 | die_is_declaration (struct die_info *die, struct dwarf2_cu *cu) |
3ca72b44 | 16496 | { |
05cf31d1 JB |
16497 | /* A DIE is a declaration if it has a DW_AT_declaration attribute |
16498 | which value is non-zero. However, we have to be careful with | |
16499 | DIEs having a DW_AT_specification attribute, because dwarf2_attr() | |
16500 | (via dwarf2_flag_true_p) follows this attribute. So we may | |
16501 | end up accidently finding a declaration attribute that belongs | |
16502 | to a different DIE referenced by the specification attribute, | |
16503 | even though the given DIE does not have a declaration attribute. */ | |
16504 | return (dwarf2_flag_true_p (die, DW_AT_declaration, cu) | |
16505 | && dwarf2_attr (die, DW_AT_specification, cu) == NULL); | |
3ca72b44 AC |
16506 | } |
16507 | ||
63d06c5c | 16508 | /* Return the die giving the specification for DIE, if there is |
f2f0e013 | 16509 | one. *SPEC_CU is the CU containing DIE on input, and the CU |
edb3359d DJ |
16510 | containing the return value on output. If there is no |
16511 | specification, but there is an abstract origin, that is | |
16512 | returned. */ | |
63d06c5c DC |
16513 | |
16514 | static struct die_info * | |
f2f0e013 | 16515 | die_specification (struct die_info *die, struct dwarf2_cu **spec_cu) |
63d06c5c | 16516 | { |
f2f0e013 DJ |
16517 | struct attribute *spec_attr = dwarf2_attr (die, DW_AT_specification, |
16518 | *spec_cu); | |
63d06c5c | 16519 | |
edb3359d DJ |
16520 | if (spec_attr == NULL) |
16521 | spec_attr = dwarf2_attr (die, DW_AT_abstract_origin, *spec_cu); | |
16522 | ||
63d06c5c DC |
16523 | if (spec_attr == NULL) |
16524 | return NULL; | |
16525 | else | |
f2f0e013 | 16526 | return follow_die_ref (die, spec_attr, spec_cu); |
63d06c5c | 16527 | } |
c906108c | 16528 | |
debd256d | 16529 | /* Free the line_header structure *LH, and any arrays and strings it |
ae2de4f8 DE |
16530 | refers to. |
16531 | NOTE: This is also used as a "cleanup" function. */ | |
16532 | ||
debd256d JB |
16533 | static void |
16534 | free_line_header (struct line_header *lh) | |
16535 | { | |
16536 | if (lh->standard_opcode_lengths) | |
a8bc7b56 | 16537 | xfree (lh->standard_opcode_lengths); |
debd256d JB |
16538 | |
16539 | /* Remember that all the lh->file_names[i].name pointers are | |
16540 | pointers into debug_line_buffer, and don't need to be freed. */ | |
16541 | if (lh->file_names) | |
a8bc7b56 | 16542 | xfree (lh->file_names); |
debd256d JB |
16543 | |
16544 | /* Similarly for the include directory names. */ | |
16545 | if (lh->include_dirs) | |
a8bc7b56 | 16546 | xfree (lh->include_dirs); |
debd256d | 16547 | |
a8bc7b56 | 16548 | xfree (lh); |
debd256d JB |
16549 | } |
16550 | ||
debd256d | 16551 | /* Add an entry to LH's include directory table. */ |
ae2de4f8 | 16552 | |
debd256d | 16553 | static void |
d521ce57 | 16554 | add_include_dir (struct line_header *lh, const char *include_dir) |
c906108c | 16555 | { |
debd256d JB |
16556 | /* Grow the array if necessary. */ |
16557 | if (lh->include_dirs_size == 0) | |
c5aa993b | 16558 | { |
debd256d JB |
16559 | lh->include_dirs_size = 1; /* for testing */ |
16560 | lh->include_dirs = xmalloc (lh->include_dirs_size | |
16561 | * sizeof (*lh->include_dirs)); | |
16562 | } | |
16563 | else if (lh->num_include_dirs >= lh->include_dirs_size) | |
16564 | { | |
16565 | lh->include_dirs_size *= 2; | |
16566 | lh->include_dirs = xrealloc (lh->include_dirs, | |
16567 | (lh->include_dirs_size | |
16568 | * sizeof (*lh->include_dirs))); | |
c5aa993b | 16569 | } |
c906108c | 16570 | |
debd256d JB |
16571 | lh->include_dirs[lh->num_include_dirs++] = include_dir; |
16572 | } | |
6e70227d | 16573 | |
debd256d | 16574 | /* Add an entry to LH's file name table. */ |
ae2de4f8 | 16575 | |
debd256d JB |
16576 | static void |
16577 | add_file_name (struct line_header *lh, | |
d521ce57 | 16578 | const char *name, |
debd256d JB |
16579 | unsigned int dir_index, |
16580 | unsigned int mod_time, | |
16581 | unsigned int length) | |
16582 | { | |
16583 | struct file_entry *fe; | |
16584 | ||
16585 | /* Grow the array if necessary. */ | |
16586 | if (lh->file_names_size == 0) | |
16587 | { | |
16588 | lh->file_names_size = 1; /* for testing */ | |
16589 | lh->file_names = xmalloc (lh->file_names_size | |
16590 | * sizeof (*lh->file_names)); | |
16591 | } | |
16592 | else if (lh->num_file_names >= lh->file_names_size) | |
16593 | { | |
16594 | lh->file_names_size *= 2; | |
16595 | lh->file_names = xrealloc (lh->file_names, | |
16596 | (lh->file_names_size | |
16597 | * sizeof (*lh->file_names))); | |
16598 | } | |
16599 | ||
16600 | fe = &lh->file_names[lh->num_file_names++]; | |
16601 | fe->name = name; | |
16602 | fe->dir_index = dir_index; | |
16603 | fe->mod_time = mod_time; | |
16604 | fe->length = length; | |
aaa75496 | 16605 | fe->included_p = 0; |
cb1df416 | 16606 | fe->symtab = NULL; |
debd256d | 16607 | } |
6e70227d | 16608 | |
36586728 TT |
16609 | /* A convenience function to find the proper .debug_line section for a |
16610 | CU. */ | |
16611 | ||
16612 | static struct dwarf2_section_info * | |
16613 | get_debug_line_section (struct dwarf2_cu *cu) | |
16614 | { | |
16615 | struct dwarf2_section_info *section; | |
16616 | ||
16617 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
16618 | DWO file. */ | |
16619 | if (cu->dwo_unit && cu->per_cu->is_debug_types) | |
16620 | section = &cu->dwo_unit->dwo_file->sections.line; | |
16621 | else if (cu->per_cu->is_dwz) | |
16622 | { | |
16623 | struct dwz_file *dwz = dwarf2_get_dwz_file (); | |
16624 | ||
16625 | section = &dwz->line; | |
16626 | } | |
16627 | else | |
16628 | section = &dwarf2_per_objfile->line; | |
16629 | ||
16630 | return section; | |
16631 | } | |
16632 | ||
debd256d | 16633 | /* Read the statement program header starting at OFFSET in |
3019eac3 | 16634 | .debug_line, or .debug_line.dwo. Return a pointer |
6502dd73 | 16635 | to a struct line_header, allocated using xmalloc. |
debd256d JB |
16636 | |
16637 | NOTE: the strings in the include directory and file name tables of | |
3019eac3 DE |
16638 | the returned object point into the dwarf line section buffer, |
16639 | and must not be freed. */ | |
ae2de4f8 | 16640 | |
debd256d | 16641 | static struct line_header * |
3019eac3 | 16642 | dwarf_decode_line_header (unsigned int offset, struct dwarf2_cu *cu) |
debd256d JB |
16643 | { |
16644 | struct cleanup *back_to; | |
16645 | struct line_header *lh; | |
d521ce57 | 16646 | const gdb_byte *line_ptr; |
c764a876 | 16647 | unsigned int bytes_read, offset_size; |
debd256d | 16648 | int i; |
d521ce57 | 16649 | const char *cur_dir, *cur_file; |
3019eac3 DE |
16650 | struct dwarf2_section_info *section; |
16651 | bfd *abfd; | |
16652 | ||
36586728 | 16653 | section = get_debug_line_section (cu); |
3019eac3 DE |
16654 | dwarf2_read_section (dwarf2_per_objfile->objfile, section); |
16655 | if (section->buffer == NULL) | |
debd256d | 16656 | { |
3019eac3 DE |
16657 | if (cu->dwo_unit && cu->per_cu->is_debug_types) |
16658 | complaint (&symfile_complaints, _("missing .debug_line.dwo section")); | |
16659 | else | |
16660 | complaint (&symfile_complaints, _("missing .debug_line section")); | |
debd256d JB |
16661 | return 0; |
16662 | } | |
16663 | ||
fceca515 DE |
16664 | /* We can't do this until we know the section is non-empty. |
16665 | Only then do we know we have such a section. */ | |
a32a8923 | 16666 | abfd = get_section_bfd_owner (section); |
fceca515 | 16667 | |
a738430d MK |
16668 | /* Make sure that at least there's room for the total_length field. |
16669 | That could be 12 bytes long, but we're just going to fudge that. */ | |
3019eac3 | 16670 | if (offset + 4 >= section->size) |
debd256d | 16671 | { |
4d3c2250 | 16672 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
16673 | return 0; |
16674 | } | |
16675 | ||
16676 | lh = xmalloc (sizeof (*lh)); | |
16677 | memset (lh, 0, sizeof (*lh)); | |
16678 | back_to = make_cleanup ((make_cleanup_ftype *) free_line_header, | |
16679 | (void *) lh); | |
16680 | ||
3019eac3 | 16681 | line_ptr = section->buffer + offset; |
debd256d | 16682 | |
a738430d | 16683 | /* Read in the header. */ |
6e70227d | 16684 | lh->total_length = |
c764a876 DE |
16685 | read_checked_initial_length_and_offset (abfd, line_ptr, &cu->header, |
16686 | &bytes_read, &offset_size); | |
debd256d | 16687 | line_ptr += bytes_read; |
3019eac3 | 16688 | if (line_ptr + lh->total_length > (section->buffer + section->size)) |
debd256d | 16689 | { |
4d3c2250 | 16690 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
2f324bf6 | 16691 | do_cleanups (back_to); |
debd256d JB |
16692 | return 0; |
16693 | } | |
16694 | lh->statement_program_end = line_ptr + lh->total_length; | |
16695 | lh->version = read_2_bytes (abfd, line_ptr); | |
16696 | line_ptr += 2; | |
c764a876 DE |
16697 | lh->header_length = read_offset_1 (abfd, line_ptr, offset_size); |
16698 | line_ptr += offset_size; | |
debd256d JB |
16699 | lh->minimum_instruction_length = read_1_byte (abfd, line_ptr); |
16700 | line_ptr += 1; | |
2dc7f7b3 TT |
16701 | if (lh->version >= 4) |
16702 | { | |
16703 | lh->maximum_ops_per_instruction = read_1_byte (abfd, line_ptr); | |
16704 | line_ptr += 1; | |
16705 | } | |
16706 | else | |
16707 | lh->maximum_ops_per_instruction = 1; | |
16708 | ||
16709 | if (lh->maximum_ops_per_instruction == 0) | |
16710 | { | |
16711 | lh->maximum_ops_per_instruction = 1; | |
16712 | complaint (&symfile_complaints, | |
3e43a32a MS |
16713 | _("invalid maximum_ops_per_instruction " |
16714 | "in `.debug_line' section")); | |
2dc7f7b3 TT |
16715 | } |
16716 | ||
debd256d JB |
16717 | lh->default_is_stmt = read_1_byte (abfd, line_ptr); |
16718 | line_ptr += 1; | |
16719 | lh->line_base = read_1_signed_byte (abfd, line_ptr); | |
16720 | line_ptr += 1; | |
16721 | lh->line_range = read_1_byte (abfd, line_ptr); | |
16722 | line_ptr += 1; | |
16723 | lh->opcode_base = read_1_byte (abfd, line_ptr); | |
16724 | line_ptr += 1; | |
16725 | lh->standard_opcode_lengths | |
fe1b8b76 | 16726 | = xmalloc (lh->opcode_base * sizeof (lh->standard_opcode_lengths[0])); |
debd256d JB |
16727 | |
16728 | lh->standard_opcode_lengths[0] = 1; /* This should never be used anyway. */ | |
16729 | for (i = 1; i < lh->opcode_base; ++i) | |
16730 | { | |
16731 | lh->standard_opcode_lengths[i] = read_1_byte (abfd, line_ptr); | |
16732 | line_ptr += 1; | |
16733 | } | |
16734 | ||
a738430d | 16735 | /* Read directory table. */ |
9b1c24c8 | 16736 | while ((cur_dir = read_direct_string (abfd, line_ptr, &bytes_read)) != NULL) |
debd256d JB |
16737 | { |
16738 | line_ptr += bytes_read; | |
16739 | add_include_dir (lh, cur_dir); | |
16740 | } | |
16741 | line_ptr += bytes_read; | |
16742 | ||
a738430d | 16743 | /* Read file name table. */ |
9b1c24c8 | 16744 | while ((cur_file = read_direct_string (abfd, line_ptr, &bytes_read)) != NULL) |
debd256d JB |
16745 | { |
16746 | unsigned int dir_index, mod_time, length; | |
16747 | ||
16748 | line_ptr += bytes_read; | |
16749 | dir_index = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
16750 | line_ptr += bytes_read; | |
16751 | mod_time = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
16752 | line_ptr += bytes_read; | |
16753 | length = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
16754 | line_ptr += bytes_read; | |
16755 | ||
16756 | add_file_name (lh, cur_file, dir_index, mod_time, length); | |
16757 | } | |
16758 | line_ptr += bytes_read; | |
6e70227d | 16759 | lh->statement_program_start = line_ptr; |
debd256d | 16760 | |
3019eac3 | 16761 | if (line_ptr > (section->buffer + section->size)) |
4d3c2250 | 16762 | complaint (&symfile_complaints, |
3e43a32a MS |
16763 | _("line number info header doesn't " |
16764 | "fit in `.debug_line' section")); | |
debd256d JB |
16765 | |
16766 | discard_cleanups (back_to); | |
16767 | return lh; | |
16768 | } | |
c906108c | 16769 | |
c6da4cef DE |
16770 | /* Subroutine of dwarf_decode_lines to simplify it. |
16771 | Return the file name of the psymtab for included file FILE_INDEX | |
16772 | in line header LH of PST. | |
16773 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
16774 | If space for the result is malloc'd, it will be freed by a cleanup. | |
1ed59174 JK |
16775 | Returns NULL if FILE_INDEX should be ignored, i.e., it is pst->filename. |
16776 | ||
16777 | The function creates dangling cleanup registration. */ | |
c6da4cef | 16778 | |
d521ce57 | 16779 | static const char * |
c6da4cef DE |
16780 | psymtab_include_file_name (const struct line_header *lh, int file_index, |
16781 | const struct partial_symtab *pst, | |
16782 | const char *comp_dir) | |
16783 | { | |
16784 | const struct file_entry fe = lh->file_names [file_index]; | |
d521ce57 TT |
16785 | const char *include_name = fe.name; |
16786 | const char *include_name_to_compare = include_name; | |
16787 | const char *dir_name = NULL; | |
72b9f47f TT |
16788 | const char *pst_filename; |
16789 | char *copied_name = NULL; | |
c6da4cef DE |
16790 | int file_is_pst; |
16791 | ||
16792 | if (fe.dir_index) | |
16793 | dir_name = lh->include_dirs[fe.dir_index - 1]; | |
16794 | ||
16795 | if (!IS_ABSOLUTE_PATH (include_name) | |
16796 | && (dir_name != NULL || comp_dir != NULL)) | |
16797 | { | |
16798 | /* Avoid creating a duplicate psymtab for PST. | |
16799 | We do this by comparing INCLUDE_NAME and PST_FILENAME. | |
16800 | Before we do the comparison, however, we need to account | |
16801 | for DIR_NAME and COMP_DIR. | |
16802 | First prepend dir_name (if non-NULL). If we still don't | |
16803 | have an absolute path prepend comp_dir (if non-NULL). | |
16804 | However, the directory we record in the include-file's | |
16805 | psymtab does not contain COMP_DIR (to match the | |
16806 | corresponding symtab(s)). | |
16807 | ||
16808 | Example: | |
16809 | ||
16810 | bash$ cd /tmp | |
16811 | bash$ gcc -g ./hello.c | |
16812 | include_name = "hello.c" | |
16813 | dir_name = "." | |
16814 | DW_AT_comp_dir = comp_dir = "/tmp" | |
16815 | DW_AT_name = "./hello.c" */ | |
16816 | ||
16817 | if (dir_name != NULL) | |
16818 | { | |
d521ce57 TT |
16819 | char *tem = concat (dir_name, SLASH_STRING, |
16820 | include_name, (char *)NULL); | |
16821 | ||
16822 | make_cleanup (xfree, tem); | |
16823 | include_name = tem; | |
c6da4cef | 16824 | include_name_to_compare = include_name; |
c6da4cef DE |
16825 | } |
16826 | if (!IS_ABSOLUTE_PATH (include_name) && comp_dir != NULL) | |
16827 | { | |
d521ce57 TT |
16828 | char *tem = concat (comp_dir, SLASH_STRING, |
16829 | include_name, (char *)NULL); | |
16830 | ||
16831 | make_cleanup (xfree, tem); | |
16832 | include_name_to_compare = tem; | |
c6da4cef DE |
16833 | } |
16834 | } | |
16835 | ||
16836 | pst_filename = pst->filename; | |
16837 | if (!IS_ABSOLUTE_PATH (pst_filename) && pst->dirname != NULL) | |
16838 | { | |
72b9f47f TT |
16839 | copied_name = concat (pst->dirname, SLASH_STRING, |
16840 | pst_filename, (char *)NULL); | |
16841 | pst_filename = copied_name; | |
c6da4cef DE |
16842 | } |
16843 | ||
1e3fad37 | 16844 | file_is_pst = FILENAME_CMP (include_name_to_compare, pst_filename) == 0; |
c6da4cef | 16845 | |
72b9f47f TT |
16846 | if (copied_name != NULL) |
16847 | xfree (copied_name); | |
c6da4cef DE |
16848 | |
16849 | if (file_is_pst) | |
16850 | return NULL; | |
16851 | return include_name; | |
16852 | } | |
16853 | ||
c91513d8 PP |
16854 | /* Ignore this record_line request. */ |
16855 | ||
16856 | static void | |
16857 | noop_record_line (struct subfile *subfile, int line, CORE_ADDR pc) | |
16858 | { | |
16859 | return; | |
16860 | } | |
16861 | ||
f3f5162e DE |
16862 | /* Subroutine of dwarf_decode_lines to simplify it. |
16863 | Process the line number information in LH. */ | |
debd256d | 16864 | |
c906108c | 16865 | static void |
f3f5162e DE |
16866 | dwarf_decode_lines_1 (struct line_header *lh, const char *comp_dir, |
16867 | struct dwarf2_cu *cu, struct partial_symtab *pst) | |
c906108c | 16868 | { |
d521ce57 TT |
16869 | const gdb_byte *line_ptr, *extended_end; |
16870 | const gdb_byte *line_end; | |
a8c50c1f | 16871 | unsigned int bytes_read, extended_len; |
c906108c | 16872 | unsigned char op_code, extended_op, adj_opcode; |
e142c38c DJ |
16873 | CORE_ADDR baseaddr; |
16874 | struct objfile *objfile = cu->objfile; | |
f3f5162e | 16875 | bfd *abfd = objfile->obfd; |
fbf65064 | 16876 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
aaa75496 | 16877 | const int decode_for_pst_p = (pst != NULL); |
f3f5162e | 16878 | struct subfile *last_subfile = NULL; |
c91513d8 PP |
16879 | void (*p_record_line) (struct subfile *subfile, int line, CORE_ADDR pc) |
16880 | = record_line; | |
e142c38c DJ |
16881 | |
16882 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 16883 | |
debd256d JB |
16884 | line_ptr = lh->statement_program_start; |
16885 | line_end = lh->statement_program_end; | |
c906108c SS |
16886 | |
16887 | /* Read the statement sequences until there's nothing left. */ | |
16888 | while (line_ptr < line_end) | |
16889 | { | |
16890 | /* state machine registers */ | |
16891 | CORE_ADDR address = 0; | |
16892 | unsigned int file = 1; | |
16893 | unsigned int line = 1; | |
16894 | unsigned int column = 0; | |
debd256d | 16895 | int is_stmt = lh->default_is_stmt; |
c906108c SS |
16896 | int basic_block = 0; |
16897 | int end_sequence = 0; | |
fbf65064 | 16898 | CORE_ADDR addr; |
2dc7f7b3 | 16899 | unsigned char op_index = 0; |
c906108c | 16900 | |
aaa75496 | 16901 | if (!decode_for_pst_p && lh->num_file_names >= file) |
c906108c | 16902 | { |
aaa75496 | 16903 | /* Start a subfile for the current file of the state machine. */ |
debd256d JB |
16904 | /* lh->include_dirs and lh->file_names are 0-based, but the |
16905 | directory and file name numbers in the statement program | |
16906 | are 1-based. */ | |
16907 | struct file_entry *fe = &lh->file_names[file - 1]; | |
d521ce57 | 16908 | const char *dir = NULL; |
a738430d | 16909 | |
debd256d JB |
16910 | if (fe->dir_index) |
16911 | dir = lh->include_dirs[fe->dir_index - 1]; | |
4f1520fb FR |
16912 | |
16913 | dwarf2_start_subfile (fe->name, dir, comp_dir); | |
c906108c SS |
16914 | } |
16915 | ||
a738430d | 16916 | /* Decode the table. */ |
c5aa993b | 16917 | while (!end_sequence) |
c906108c SS |
16918 | { |
16919 | op_code = read_1_byte (abfd, line_ptr); | |
16920 | line_ptr += 1; | |
59205f5a JB |
16921 | if (line_ptr > line_end) |
16922 | { | |
16923 | dwarf2_debug_line_missing_end_sequence_complaint (); | |
16924 | break; | |
16925 | } | |
9aa1fe7e | 16926 | |
debd256d | 16927 | if (op_code >= lh->opcode_base) |
6e70227d | 16928 | { |
a738430d | 16929 | /* Special operand. */ |
debd256d | 16930 | adj_opcode = op_code - lh->opcode_base; |
2dc7f7b3 TT |
16931 | address += (((op_index + (adj_opcode / lh->line_range)) |
16932 | / lh->maximum_ops_per_instruction) | |
16933 | * lh->minimum_instruction_length); | |
16934 | op_index = ((op_index + (adj_opcode / lh->line_range)) | |
16935 | % lh->maximum_ops_per_instruction); | |
debd256d | 16936 | line += lh->line_base + (adj_opcode % lh->line_range); |
59205f5a | 16937 | if (lh->num_file_names < file || file == 0) |
25e43795 | 16938 | dwarf2_debug_line_missing_file_complaint (); |
2dc7f7b3 TT |
16939 | /* For now we ignore lines not starting on an |
16940 | instruction boundary. */ | |
16941 | else if (op_index == 0) | |
25e43795 DJ |
16942 | { |
16943 | lh->file_names[file - 1].included_p = 1; | |
ca5f395d | 16944 | if (!decode_for_pst_p && is_stmt) |
fbf65064 UW |
16945 | { |
16946 | if (last_subfile != current_subfile) | |
16947 | { | |
16948 | addr = gdbarch_addr_bits_remove (gdbarch, address); | |
16949 | if (last_subfile) | |
c91513d8 | 16950 | (*p_record_line) (last_subfile, 0, addr); |
fbf65064 UW |
16951 | last_subfile = current_subfile; |
16952 | } | |
25e43795 | 16953 | /* Append row to matrix using current values. */ |
7019d805 | 16954 | addr = gdbarch_addr_bits_remove (gdbarch, address); |
c91513d8 | 16955 | (*p_record_line) (current_subfile, line, addr); |
366da635 | 16956 | } |
25e43795 | 16957 | } |
ca5f395d | 16958 | basic_block = 0; |
9aa1fe7e GK |
16959 | } |
16960 | else switch (op_code) | |
c906108c SS |
16961 | { |
16962 | case DW_LNS_extended_op: | |
3e43a32a MS |
16963 | extended_len = read_unsigned_leb128 (abfd, line_ptr, |
16964 | &bytes_read); | |
473b7be6 | 16965 | line_ptr += bytes_read; |
a8c50c1f | 16966 | extended_end = line_ptr + extended_len; |
c906108c SS |
16967 | extended_op = read_1_byte (abfd, line_ptr); |
16968 | line_ptr += 1; | |
16969 | switch (extended_op) | |
16970 | { | |
16971 | case DW_LNE_end_sequence: | |
c91513d8 | 16972 | p_record_line = record_line; |
c906108c | 16973 | end_sequence = 1; |
c906108c SS |
16974 | break; |
16975 | case DW_LNE_set_address: | |
e7c27a73 | 16976 | address = read_address (abfd, line_ptr, cu, &bytes_read); |
c91513d8 PP |
16977 | |
16978 | if (address == 0 && !dwarf2_per_objfile->has_section_at_zero) | |
16979 | { | |
16980 | /* This line table is for a function which has been | |
16981 | GCd by the linker. Ignore it. PR gdb/12528 */ | |
16982 | ||
16983 | long line_offset | |
36586728 | 16984 | = line_ptr - get_debug_line_section (cu)->buffer; |
c91513d8 PP |
16985 | |
16986 | complaint (&symfile_complaints, | |
16987 | _(".debug_line address at offset 0x%lx is 0 " | |
16988 | "[in module %s]"), | |
4262abfb | 16989 | line_offset, objfile_name (objfile)); |
c91513d8 PP |
16990 | p_record_line = noop_record_line; |
16991 | } | |
16992 | ||
2dc7f7b3 | 16993 | op_index = 0; |
107d2387 AC |
16994 | line_ptr += bytes_read; |
16995 | address += baseaddr; | |
c906108c SS |
16996 | break; |
16997 | case DW_LNE_define_file: | |
debd256d | 16998 | { |
d521ce57 | 16999 | const char *cur_file; |
debd256d | 17000 | unsigned int dir_index, mod_time, length; |
6e70227d | 17001 | |
3e43a32a MS |
17002 | cur_file = read_direct_string (abfd, line_ptr, |
17003 | &bytes_read); | |
debd256d JB |
17004 | line_ptr += bytes_read; |
17005 | dir_index = | |
17006 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
17007 | line_ptr += bytes_read; | |
17008 | mod_time = | |
17009 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
17010 | line_ptr += bytes_read; | |
17011 | length = | |
17012 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
17013 | line_ptr += bytes_read; | |
17014 | add_file_name (lh, cur_file, dir_index, mod_time, length); | |
17015 | } | |
c906108c | 17016 | break; |
d0c6ba3d CC |
17017 | case DW_LNE_set_discriminator: |
17018 | /* The discriminator is not interesting to the debugger; | |
17019 | just ignore it. */ | |
17020 | line_ptr = extended_end; | |
17021 | break; | |
c906108c | 17022 | default: |
4d3c2250 | 17023 | complaint (&symfile_complaints, |
e2e0b3e5 | 17024 | _("mangled .debug_line section")); |
debd256d | 17025 | return; |
c906108c | 17026 | } |
a8c50c1f DJ |
17027 | /* Make sure that we parsed the extended op correctly. If e.g. |
17028 | we expected a different address size than the producer used, | |
17029 | we may have read the wrong number of bytes. */ | |
17030 | if (line_ptr != extended_end) | |
17031 | { | |
17032 | complaint (&symfile_complaints, | |
17033 | _("mangled .debug_line section")); | |
17034 | return; | |
17035 | } | |
c906108c SS |
17036 | break; |
17037 | case DW_LNS_copy: | |
59205f5a | 17038 | if (lh->num_file_names < file || file == 0) |
25e43795 DJ |
17039 | dwarf2_debug_line_missing_file_complaint (); |
17040 | else | |
366da635 | 17041 | { |
25e43795 | 17042 | lh->file_names[file - 1].included_p = 1; |
ca5f395d | 17043 | if (!decode_for_pst_p && is_stmt) |
fbf65064 UW |
17044 | { |
17045 | if (last_subfile != current_subfile) | |
17046 | { | |
17047 | addr = gdbarch_addr_bits_remove (gdbarch, address); | |
17048 | if (last_subfile) | |
c91513d8 | 17049 | (*p_record_line) (last_subfile, 0, addr); |
fbf65064 UW |
17050 | last_subfile = current_subfile; |
17051 | } | |
7019d805 | 17052 | addr = gdbarch_addr_bits_remove (gdbarch, address); |
c91513d8 | 17053 | (*p_record_line) (current_subfile, line, addr); |
fbf65064 | 17054 | } |
366da635 | 17055 | } |
c906108c SS |
17056 | basic_block = 0; |
17057 | break; | |
17058 | case DW_LNS_advance_pc: | |
2dc7f7b3 TT |
17059 | { |
17060 | CORE_ADDR adjust | |
17061 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
17062 | ||
17063 | address += (((op_index + adjust) | |
17064 | / lh->maximum_ops_per_instruction) | |
17065 | * lh->minimum_instruction_length); | |
17066 | op_index = ((op_index + adjust) | |
17067 | % lh->maximum_ops_per_instruction); | |
17068 | line_ptr += bytes_read; | |
17069 | } | |
c906108c SS |
17070 | break; |
17071 | case DW_LNS_advance_line: | |
17072 | line += read_signed_leb128 (abfd, line_ptr, &bytes_read); | |
17073 | line_ptr += bytes_read; | |
17074 | break; | |
17075 | case DW_LNS_set_file: | |
debd256d | 17076 | { |
a738430d MK |
17077 | /* The arrays lh->include_dirs and lh->file_names are |
17078 | 0-based, but the directory and file name numbers in | |
17079 | the statement program are 1-based. */ | |
debd256d | 17080 | struct file_entry *fe; |
d521ce57 | 17081 | const char *dir = NULL; |
a738430d | 17082 | |
debd256d JB |
17083 | file = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
17084 | line_ptr += bytes_read; | |
59205f5a | 17085 | if (lh->num_file_names < file || file == 0) |
25e43795 DJ |
17086 | dwarf2_debug_line_missing_file_complaint (); |
17087 | else | |
17088 | { | |
17089 | fe = &lh->file_names[file - 1]; | |
17090 | if (fe->dir_index) | |
17091 | dir = lh->include_dirs[fe->dir_index - 1]; | |
17092 | if (!decode_for_pst_p) | |
17093 | { | |
17094 | last_subfile = current_subfile; | |
17095 | dwarf2_start_subfile (fe->name, dir, comp_dir); | |
17096 | } | |
17097 | } | |
debd256d | 17098 | } |
c906108c SS |
17099 | break; |
17100 | case DW_LNS_set_column: | |
17101 | column = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
17102 | line_ptr += bytes_read; | |
17103 | break; | |
17104 | case DW_LNS_negate_stmt: | |
17105 | is_stmt = (!is_stmt); | |
17106 | break; | |
17107 | case DW_LNS_set_basic_block: | |
17108 | basic_block = 1; | |
17109 | break; | |
c2c6d25f JM |
17110 | /* Add to the address register of the state machine the |
17111 | address increment value corresponding to special opcode | |
a738430d MK |
17112 | 255. I.e., this value is scaled by the minimum |
17113 | instruction length since special opcode 255 would have | |
b021a221 | 17114 | scaled the increment. */ |
c906108c | 17115 | case DW_LNS_const_add_pc: |
2dc7f7b3 TT |
17116 | { |
17117 | CORE_ADDR adjust = (255 - lh->opcode_base) / lh->line_range; | |
17118 | ||
17119 | address += (((op_index + adjust) | |
17120 | / lh->maximum_ops_per_instruction) | |
17121 | * lh->minimum_instruction_length); | |
17122 | op_index = ((op_index + adjust) | |
17123 | % lh->maximum_ops_per_instruction); | |
17124 | } | |
c906108c SS |
17125 | break; |
17126 | case DW_LNS_fixed_advance_pc: | |
17127 | address += read_2_bytes (abfd, line_ptr); | |
2dc7f7b3 | 17128 | op_index = 0; |
c906108c SS |
17129 | line_ptr += 2; |
17130 | break; | |
9aa1fe7e | 17131 | default: |
a738430d MK |
17132 | { |
17133 | /* Unknown standard opcode, ignore it. */ | |
9aa1fe7e | 17134 | int i; |
a738430d | 17135 | |
debd256d | 17136 | for (i = 0; i < lh->standard_opcode_lengths[op_code]; i++) |
9aa1fe7e GK |
17137 | { |
17138 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
17139 | line_ptr += bytes_read; | |
17140 | } | |
17141 | } | |
c906108c SS |
17142 | } |
17143 | } | |
59205f5a JB |
17144 | if (lh->num_file_names < file || file == 0) |
17145 | dwarf2_debug_line_missing_file_complaint (); | |
17146 | else | |
17147 | { | |
17148 | lh->file_names[file - 1].included_p = 1; | |
17149 | if (!decode_for_pst_p) | |
fbf65064 UW |
17150 | { |
17151 | addr = gdbarch_addr_bits_remove (gdbarch, address); | |
c91513d8 | 17152 | (*p_record_line) (current_subfile, 0, addr); |
fbf65064 | 17153 | } |
59205f5a | 17154 | } |
c906108c | 17155 | } |
f3f5162e DE |
17156 | } |
17157 | ||
17158 | /* Decode the Line Number Program (LNP) for the given line_header | |
17159 | structure and CU. The actual information extracted and the type | |
17160 | of structures created from the LNP depends on the value of PST. | |
17161 | ||
17162 | 1. If PST is NULL, then this procedure uses the data from the program | |
17163 | to create all necessary symbol tables, and their linetables. | |
17164 | ||
17165 | 2. If PST is not NULL, this procedure reads the program to determine | |
17166 | the list of files included by the unit represented by PST, and | |
17167 | builds all the associated partial symbol tables. | |
17168 | ||
17169 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
17170 | It is used for relative paths in the line table. | |
17171 | NOTE: When processing partial symtabs (pst != NULL), | |
17172 | comp_dir == pst->dirname. | |
17173 | ||
17174 | NOTE: It is important that psymtabs have the same file name (via strcmp) | |
17175 | as the corresponding symtab. Since COMP_DIR is not used in the name of the | |
17176 | symtab we don't use it in the name of the psymtabs we create. | |
17177 | E.g. expand_line_sal requires this when finding psymtabs to expand. | |
17178 | A good testcase for this is mb-inline.exp. */ | |
17179 | ||
17180 | static void | |
17181 | dwarf_decode_lines (struct line_header *lh, const char *comp_dir, | |
17182 | struct dwarf2_cu *cu, struct partial_symtab *pst, | |
17183 | int want_line_info) | |
17184 | { | |
17185 | struct objfile *objfile = cu->objfile; | |
17186 | const int decode_for_pst_p = (pst != NULL); | |
17187 | struct subfile *first_subfile = current_subfile; | |
17188 | ||
17189 | if (want_line_info) | |
17190 | dwarf_decode_lines_1 (lh, comp_dir, cu, pst); | |
aaa75496 JB |
17191 | |
17192 | if (decode_for_pst_p) | |
17193 | { | |
17194 | int file_index; | |
17195 | ||
17196 | /* Now that we're done scanning the Line Header Program, we can | |
17197 | create the psymtab of each included file. */ | |
17198 | for (file_index = 0; file_index < lh->num_file_names; file_index++) | |
17199 | if (lh->file_names[file_index].included_p == 1) | |
17200 | { | |
d521ce57 | 17201 | const char *include_name = |
c6da4cef DE |
17202 | psymtab_include_file_name (lh, file_index, pst, comp_dir); |
17203 | if (include_name != NULL) | |
aaa75496 JB |
17204 | dwarf2_create_include_psymtab (include_name, pst, objfile); |
17205 | } | |
17206 | } | |
cb1df416 DJ |
17207 | else |
17208 | { | |
17209 | /* Make sure a symtab is created for every file, even files | |
17210 | which contain only variables (i.e. no code with associated | |
17211 | line numbers). */ | |
cb1df416 | 17212 | int i; |
cb1df416 DJ |
17213 | |
17214 | for (i = 0; i < lh->num_file_names; i++) | |
17215 | { | |
d521ce57 | 17216 | const char *dir = NULL; |
f3f5162e | 17217 | struct file_entry *fe; |
9a619af0 | 17218 | |
cb1df416 DJ |
17219 | fe = &lh->file_names[i]; |
17220 | if (fe->dir_index) | |
17221 | dir = lh->include_dirs[fe->dir_index - 1]; | |
17222 | dwarf2_start_subfile (fe->name, dir, comp_dir); | |
17223 | ||
17224 | /* Skip the main file; we don't need it, and it must be | |
17225 | allocated last, so that it will show up before the | |
17226 | non-primary symtabs in the objfile's symtab list. */ | |
17227 | if (current_subfile == first_subfile) | |
17228 | continue; | |
17229 | ||
17230 | if (current_subfile->symtab == NULL) | |
17231 | current_subfile->symtab = allocate_symtab (current_subfile->name, | |
bb5ed363 | 17232 | objfile); |
cb1df416 DJ |
17233 | fe->symtab = current_subfile->symtab; |
17234 | } | |
17235 | } | |
c906108c SS |
17236 | } |
17237 | ||
17238 | /* Start a subfile for DWARF. FILENAME is the name of the file and | |
17239 | DIRNAME the name of the source directory which contains FILENAME | |
4f1520fb FR |
17240 | or NULL if not known. COMP_DIR is the compilation directory for the |
17241 | linetable's compilation unit or NULL if not known. | |
c906108c SS |
17242 | This routine tries to keep line numbers from identical absolute and |
17243 | relative file names in a common subfile. | |
17244 | ||
17245 | Using the `list' example from the GDB testsuite, which resides in | |
17246 | /srcdir and compiling it with Irix6.2 cc in /compdir using a filename | |
17247 | of /srcdir/list0.c yields the following debugging information for list0.c: | |
17248 | ||
c5aa993b JM |
17249 | DW_AT_name: /srcdir/list0.c |
17250 | DW_AT_comp_dir: /compdir | |
357e46e7 | 17251 | files.files[0].name: list0.h |
c5aa993b | 17252 | files.files[0].dir: /srcdir |
357e46e7 | 17253 | files.files[1].name: list0.c |
c5aa993b | 17254 | files.files[1].dir: /srcdir |
c906108c SS |
17255 | |
17256 | The line number information for list0.c has to end up in a single | |
4f1520fb FR |
17257 | subfile, so that `break /srcdir/list0.c:1' works as expected. |
17258 | start_subfile will ensure that this happens provided that we pass the | |
17259 | concatenation of files.files[1].dir and files.files[1].name as the | |
17260 | subfile's name. */ | |
c906108c SS |
17261 | |
17262 | static void | |
d521ce57 | 17263 | dwarf2_start_subfile (const char *filename, const char *dirname, |
3e43a32a | 17264 | const char *comp_dir) |
c906108c | 17265 | { |
d521ce57 | 17266 | char *copy = NULL; |
4f1520fb FR |
17267 | |
17268 | /* While reading the DIEs, we call start_symtab(DW_AT_name, DW_AT_comp_dir). | |
17269 | `start_symtab' will always pass the contents of DW_AT_comp_dir as | |
17270 | second argument to start_subfile. To be consistent, we do the | |
17271 | same here. In order not to lose the line information directory, | |
17272 | we concatenate it to the filename when it makes sense. | |
17273 | Note that the Dwarf3 standard says (speaking of filenames in line | |
17274 | information): ``The directory index is ignored for file names | |
17275 | that represent full path names''. Thus ignoring dirname in the | |
17276 | `else' branch below isn't an issue. */ | |
c906108c | 17277 | |
d5166ae1 | 17278 | if (!IS_ABSOLUTE_PATH (filename) && dirname != NULL) |
d521ce57 TT |
17279 | { |
17280 | copy = concat (dirname, SLASH_STRING, filename, (char *)NULL); | |
17281 | filename = copy; | |
17282 | } | |
c906108c | 17283 | |
d521ce57 | 17284 | start_subfile (filename, comp_dir); |
4f1520fb | 17285 | |
d521ce57 TT |
17286 | if (copy != NULL) |
17287 | xfree (copy); | |
c906108c SS |
17288 | } |
17289 | ||
f4dc4d17 DE |
17290 | /* Start a symtab for DWARF. |
17291 | NAME, COMP_DIR, LOW_PC are passed to start_symtab. */ | |
17292 | ||
17293 | static void | |
17294 | dwarf2_start_symtab (struct dwarf2_cu *cu, | |
15d034d0 | 17295 | const char *name, const char *comp_dir, CORE_ADDR low_pc) |
f4dc4d17 DE |
17296 | { |
17297 | start_symtab (name, comp_dir, low_pc); | |
17298 | record_debugformat ("DWARF 2"); | |
17299 | record_producer (cu->producer); | |
17300 | ||
17301 | /* We assume that we're processing GCC output. */ | |
17302 | processing_gcc_compilation = 2; | |
17303 | ||
4d4ec4e5 | 17304 | cu->processing_has_namespace_info = 0; |
f4dc4d17 DE |
17305 | } |
17306 | ||
4c2df51b DJ |
17307 | static void |
17308 | var_decode_location (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 17309 | struct dwarf2_cu *cu) |
4c2df51b | 17310 | { |
e7c27a73 DJ |
17311 | struct objfile *objfile = cu->objfile; |
17312 | struct comp_unit_head *cu_header = &cu->header; | |
17313 | ||
4c2df51b DJ |
17314 | /* NOTE drow/2003-01-30: There used to be a comment and some special |
17315 | code here to turn a symbol with DW_AT_external and a | |
17316 | SYMBOL_VALUE_ADDRESS of 0 into a LOC_UNRESOLVED symbol. This was | |
17317 | necessary for platforms (maybe Alpha, certainly PowerPC GNU/Linux | |
17318 | with some versions of binutils) where shared libraries could have | |
17319 | relocations against symbols in their debug information - the | |
17320 | minimal symbol would have the right address, but the debug info | |
17321 | would not. It's no longer necessary, because we will explicitly | |
17322 | apply relocations when we read in the debug information now. */ | |
17323 | ||
17324 | /* A DW_AT_location attribute with no contents indicates that a | |
17325 | variable has been optimized away. */ | |
17326 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size == 0) | |
17327 | { | |
f1e6e072 | 17328 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
4c2df51b DJ |
17329 | return; |
17330 | } | |
17331 | ||
17332 | /* Handle one degenerate form of location expression specially, to | |
17333 | preserve GDB's previous behavior when section offsets are | |
3019eac3 DE |
17334 | specified. If this is just a DW_OP_addr or DW_OP_GNU_addr_index |
17335 | then mark this symbol as LOC_STATIC. */ | |
4c2df51b DJ |
17336 | |
17337 | if (attr_form_is_block (attr) | |
3019eac3 DE |
17338 | && ((DW_BLOCK (attr)->data[0] == DW_OP_addr |
17339 | && DW_BLOCK (attr)->size == 1 + cu_header->addr_size) | |
17340 | || (DW_BLOCK (attr)->data[0] == DW_OP_GNU_addr_index | |
17341 | && (DW_BLOCK (attr)->size | |
17342 | == 1 + leb128_size (&DW_BLOCK (attr)->data[1]))))) | |
4c2df51b | 17343 | { |
891d2f0b | 17344 | unsigned int dummy; |
4c2df51b | 17345 | |
3019eac3 DE |
17346 | if (DW_BLOCK (attr)->data[0] == DW_OP_addr) |
17347 | SYMBOL_VALUE_ADDRESS (sym) = | |
17348 | read_address (objfile->obfd, DW_BLOCK (attr)->data + 1, cu, &dummy); | |
17349 | else | |
17350 | SYMBOL_VALUE_ADDRESS (sym) = | |
17351 | read_addr_index_from_leb128 (cu, DW_BLOCK (attr)->data + 1, &dummy); | |
f1e6e072 | 17352 | SYMBOL_ACLASS_INDEX (sym) = LOC_STATIC; |
4c2df51b DJ |
17353 | fixup_symbol_section (sym, objfile); |
17354 | SYMBOL_VALUE_ADDRESS (sym) += ANOFFSET (objfile->section_offsets, | |
17355 | SYMBOL_SECTION (sym)); | |
4c2df51b DJ |
17356 | return; |
17357 | } | |
17358 | ||
17359 | /* NOTE drow/2002-01-30: It might be worthwhile to have a static | |
17360 | expression evaluator, and use LOC_COMPUTED only when necessary | |
17361 | (i.e. when the value of a register or memory location is | |
17362 | referenced, or a thread-local block, etc.). Then again, it might | |
17363 | not be worthwhile. I'm assuming that it isn't unless performance | |
17364 | or memory numbers show me otherwise. */ | |
17365 | ||
f1e6e072 | 17366 | dwarf2_symbol_mark_computed (attr, sym, cu, 0); |
8be455d7 | 17367 | |
f1e6e072 | 17368 | if (SYMBOL_COMPUTED_OPS (sym)->location_has_loclist) |
8be455d7 | 17369 | cu->has_loclist = 1; |
4c2df51b DJ |
17370 | } |
17371 | ||
c906108c SS |
17372 | /* Given a pointer to a DWARF information entry, figure out if we need |
17373 | to make a symbol table entry for it, and if so, create a new entry | |
17374 | and return a pointer to it. | |
17375 | If TYPE is NULL, determine symbol type from the die, otherwise | |
34eaf542 TT |
17376 | used the passed type. |
17377 | If SPACE is not NULL, use it to hold the new symbol. If it is | |
17378 | NULL, allocate a new symbol on the objfile's obstack. */ | |
c906108c SS |
17379 | |
17380 | static struct symbol * | |
34eaf542 TT |
17381 | new_symbol_full (struct die_info *die, struct type *type, struct dwarf2_cu *cu, |
17382 | struct symbol *space) | |
c906108c | 17383 | { |
e7c27a73 | 17384 | struct objfile *objfile = cu->objfile; |
c906108c | 17385 | struct symbol *sym = NULL; |
15d034d0 | 17386 | const char *name; |
c906108c SS |
17387 | struct attribute *attr = NULL; |
17388 | struct attribute *attr2 = NULL; | |
e142c38c | 17389 | CORE_ADDR baseaddr; |
e37fd15a SW |
17390 | struct pending **list_to_add = NULL; |
17391 | ||
edb3359d | 17392 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
e142c38c DJ |
17393 | |
17394 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 17395 | |
94af9270 | 17396 | name = dwarf2_name (die, cu); |
c906108c SS |
17397 | if (name) |
17398 | { | |
94af9270 | 17399 | const char *linkagename; |
34eaf542 | 17400 | int suppress_add = 0; |
94af9270 | 17401 | |
34eaf542 TT |
17402 | if (space) |
17403 | sym = space; | |
17404 | else | |
e623cf5d | 17405 | sym = allocate_symbol (objfile); |
c906108c | 17406 | OBJSTAT (objfile, n_syms++); |
2de7ced7 DJ |
17407 | |
17408 | /* Cache this symbol's name and the name's demangled form (if any). */ | |
f85f34ed | 17409 | SYMBOL_SET_LANGUAGE (sym, cu->language, &objfile->objfile_obstack); |
94af9270 KS |
17410 | linkagename = dwarf2_physname (name, die, cu); |
17411 | SYMBOL_SET_NAMES (sym, linkagename, strlen (linkagename), 0, objfile); | |
c906108c | 17412 | |
f55ee35c JK |
17413 | /* Fortran does not have mangling standard and the mangling does differ |
17414 | between gfortran, iFort etc. */ | |
17415 | if (cu->language == language_fortran | |
b250c185 | 17416 | && symbol_get_demangled_name (&(sym->ginfo)) == NULL) |
29df156d | 17417 | symbol_set_demangled_name (&(sym->ginfo), |
cfc594ee | 17418 | dwarf2_full_name (name, die, cu), |
29df156d | 17419 | NULL); |
f55ee35c | 17420 | |
c906108c | 17421 | /* Default assumptions. |
c5aa993b | 17422 | Use the passed type or decode it from the die. */ |
176620f1 | 17423 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
f1e6e072 | 17424 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
c906108c SS |
17425 | if (type != NULL) |
17426 | SYMBOL_TYPE (sym) = type; | |
17427 | else | |
e7c27a73 | 17428 | SYMBOL_TYPE (sym) = die_type (die, cu); |
edb3359d DJ |
17429 | attr = dwarf2_attr (die, |
17430 | inlined_func ? DW_AT_call_line : DW_AT_decl_line, | |
17431 | cu); | |
c906108c SS |
17432 | if (attr) |
17433 | { | |
17434 | SYMBOL_LINE (sym) = DW_UNSND (attr); | |
17435 | } | |
cb1df416 | 17436 | |
edb3359d DJ |
17437 | attr = dwarf2_attr (die, |
17438 | inlined_func ? DW_AT_call_file : DW_AT_decl_file, | |
17439 | cu); | |
cb1df416 DJ |
17440 | if (attr) |
17441 | { | |
17442 | int file_index = DW_UNSND (attr); | |
9a619af0 | 17443 | |
cb1df416 DJ |
17444 | if (cu->line_header == NULL |
17445 | || file_index > cu->line_header->num_file_names) | |
17446 | complaint (&symfile_complaints, | |
17447 | _("file index out of range")); | |
1c3d648d | 17448 | else if (file_index > 0) |
cb1df416 DJ |
17449 | { |
17450 | struct file_entry *fe; | |
9a619af0 | 17451 | |
cb1df416 DJ |
17452 | fe = &cu->line_header->file_names[file_index - 1]; |
17453 | SYMBOL_SYMTAB (sym) = fe->symtab; | |
17454 | } | |
17455 | } | |
17456 | ||
c906108c SS |
17457 | switch (die->tag) |
17458 | { | |
17459 | case DW_TAG_label: | |
e142c38c | 17460 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
c906108c SS |
17461 | if (attr) |
17462 | { | |
17463 | SYMBOL_VALUE_ADDRESS (sym) = DW_ADDR (attr) + baseaddr; | |
17464 | } | |
0f5238ed TT |
17465 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_core_addr; |
17466 | SYMBOL_DOMAIN (sym) = LABEL_DOMAIN; | |
f1e6e072 | 17467 | SYMBOL_ACLASS_INDEX (sym) = LOC_LABEL; |
0f5238ed | 17468 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
17469 | break; |
17470 | case DW_TAG_subprogram: | |
17471 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
17472 | finish_block. */ | |
f1e6e072 | 17473 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
e142c38c | 17474 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
2cfa0c8d JB |
17475 | if ((attr2 && (DW_UNSND (attr2) != 0)) |
17476 | || cu->language == language_ada) | |
c906108c | 17477 | { |
2cfa0c8d JB |
17478 | /* Subprograms marked external are stored as a global symbol. |
17479 | Ada subprograms, whether marked external or not, are always | |
17480 | stored as a global symbol, because we want to be able to | |
17481 | access them globally. For instance, we want to be able | |
17482 | to break on a nested subprogram without having to | |
17483 | specify the context. */ | |
e37fd15a | 17484 | list_to_add = &global_symbols; |
c906108c SS |
17485 | } |
17486 | else | |
17487 | { | |
e37fd15a | 17488 | list_to_add = cu->list_in_scope; |
c906108c SS |
17489 | } |
17490 | break; | |
edb3359d DJ |
17491 | case DW_TAG_inlined_subroutine: |
17492 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
17493 | finish_block. */ | |
f1e6e072 | 17494 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
edb3359d | 17495 | SYMBOL_INLINED (sym) = 1; |
481860b3 | 17496 | list_to_add = cu->list_in_scope; |
edb3359d | 17497 | break; |
34eaf542 TT |
17498 | case DW_TAG_template_value_param: |
17499 | suppress_add = 1; | |
17500 | /* Fall through. */ | |
72929c62 | 17501 | case DW_TAG_constant: |
c906108c | 17502 | case DW_TAG_variable: |
254e6b9e | 17503 | case DW_TAG_member: |
0963b4bd MS |
17504 | /* Compilation with minimal debug info may result in |
17505 | variables with missing type entries. Change the | |
17506 | misleading `void' type to something sensible. */ | |
c906108c | 17507 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_VOID) |
64c50499 | 17508 | SYMBOL_TYPE (sym) |
46bf5051 | 17509 | = objfile_type (objfile)->nodebug_data_symbol; |
64c50499 | 17510 | |
e142c38c | 17511 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
254e6b9e DE |
17512 | /* In the case of DW_TAG_member, we should only be called for |
17513 | static const members. */ | |
17514 | if (die->tag == DW_TAG_member) | |
17515 | { | |
3863f96c DE |
17516 | /* dwarf2_add_field uses die_is_declaration, |
17517 | so we do the same. */ | |
254e6b9e DE |
17518 | gdb_assert (die_is_declaration (die, cu)); |
17519 | gdb_assert (attr); | |
17520 | } | |
c906108c SS |
17521 | if (attr) |
17522 | { | |
e7c27a73 | 17523 | dwarf2_const_value (attr, sym, cu); |
e142c38c | 17524 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
e37fd15a | 17525 | if (!suppress_add) |
34eaf542 TT |
17526 | { |
17527 | if (attr2 && (DW_UNSND (attr2) != 0)) | |
e37fd15a | 17528 | list_to_add = &global_symbols; |
34eaf542 | 17529 | else |
e37fd15a | 17530 | list_to_add = cu->list_in_scope; |
34eaf542 | 17531 | } |
c906108c SS |
17532 | break; |
17533 | } | |
e142c38c | 17534 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
17535 | if (attr) |
17536 | { | |
e7c27a73 | 17537 | var_decode_location (attr, sym, cu); |
e142c38c | 17538 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
4357ac6c TT |
17539 | |
17540 | /* Fortran explicitly imports any global symbols to the local | |
17541 | scope by DW_TAG_common_block. */ | |
17542 | if (cu->language == language_fortran && die->parent | |
17543 | && die->parent->tag == DW_TAG_common_block) | |
17544 | attr2 = NULL; | |
17545 | ||
caac4577 JG |
17546 | if (SYMBOL_CLASS (sym) == LOC_STATIC |
17547 | && SYMBOL_VALUE_ADDRESS (sym) == 0 | |
17548 | && !dwarf2_per_objfile->has_section_at_zero) | |
17549 | { | |
17550 | /* When a static variable is eliminated by the linker, | |
17551 | the corresponding debug information is not stripped | |
17552 | out, but the variable address is set to null; | |
17553 | do not add such variables into symbol table. */ | |
17554 | } | |
17555 | else if (attr2 && (DW_UNSND (attr2) != 0)) | |
1c809c68 | 17556 | { |
f55ee35c JK |
17557 | /* Workaround gfortran PR debug/40040 - it uses |
17558 | DW_AT_location for variables in -fPIC libraries which may | |
17559 | get overriden by other libraries/executable and get | |
17560 | a different address. Resolve it by the minimal symbol | |
17561 | which may come from inferior's executable using copy | |
17562 | relocation. Make this workaround only for gfortran as for | |
17563 | other compilers GDB cannot guess the minimal symbol | |
17564 | Fortran mangling kind. */ | |
17565 | if (cu->language == language_fortran && die->parent | |
17566 | && die->parent->tag == DW_TAG_module | |
17567 | && cu->producer | |
17568 | && strncmp (cu->producer, "GNU Fortran ", 12) == 0) | |
f1e6e072 | 17569 | SYMBOL_ACLASS_INDEX (sym) = LOC_UNRESOLVED; |
f55ee35c | 17570 | |
1c809c68 TT |
17571 | /* A variable with DW_AT_external is never static, |
17572 | but it may be block-scoped. */ | |
17573 | list_to_add = (cu->list_in_scope == &file_symbols | |
17574 | ? &global_symbols : cu->list_in_scope); | |
1c809c68 | 17575 | } |
c906108c | 17576 | else |
e37fd15a | 17577 | list_to_add = cu->list_in_scope; |
c906108c SS |
17578 | } |
17579 | else | |
17580 | { | |
17581 | /* We do not know the address of this symbol. | |
c5aa993b JM |
17582 | If it is an external symbol and we have type information |
17583 | for it, enter the symbol as a LOC_UNRESOLVED symbol. | |
17584 | The address of the variable will then be determined from | |
17585 | the minimal symbol table whenever the variable is | |
17586 | referenced. */ | |
e142c38c | 17587 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
0971de02 TT |
17588 | |
17589 | /* Fortran explicitly imports any global symbols to the local | |
17590 | scope by DW_TAG_common_block. */ | |
17591 | if (cu->language == language_fortran && die->parent | |
17592 | && die->parent->tag == DW_TAG_common_block) | |
17593 | { | |
17594 | /* SYMBOL_CLASS doesn't matter here because | |
17595 | read_common_block is going to reset it. */ | |
17596 | if (!suppress_add) | |
17597 | list_to_add = cu->list_in_scope; | |
17598 | } | |
17599 | else if (attr2 && (DW_UNSND (attr2) != 0) | |
17600 | && dwarf2_attr (die, DW_AT_type, cu) != NULL) | |
c906108c | 17601 | { |
0fe7935b DJ |
17602 | /* A variable with DW_AT_external is never static, but it |
17603 | may be block-scoped. */ | |
17604 | list_to_add = (cu->list_in_scope == &file_symbols | |
17605 | ? &global_symbols : cu->list_in_scope); | |
17606 | ||
f1e6e072 | 17607 | SYMBOL_ACLASS_INDEX (sym) = LOC_UNRESOLVED; |
c906108c | 17608 | } |
442ddf59 JK |
17609 | else if (!die_is_declaration (die, cu)) |
17610 | { | |
17611 | /* Use the default LOC_OPTIMIZED_OUT class. */ | |
17612 | gdb_assert (SYMBOL_CLASS (sym) == LOC_OPTIMIZED_OUT); | |
e37fd15a SW |
17613 | if (!suppress_add) |
17614 | list_to_add = cu->list_in_scope; | |
442ddf59 | 17615 | } |
c906108c SS |
17616 | } |
17617 | break; | |
17618 | case DW_TAG_formal_parameter: | |
edb3359d DJ |
17619 | /* If we are inside a function, mark this as an argument. If |
17620 | not, we might be looking at an argument to an inlined function | |
17621 | when we do not have enough information to show inlined frames; | |
17622 | pretend it's a local variable in that case so that the user can | |
17623 | still see it. */ | |
17624 | if (context_stack_depth > 0 | |
17625 | && context_stack[context_stack_depth - 1].name != NULL) | |
17626 | SYMBOL_IS_ARGUMENT (sym) = 1; | |
e142c38c | 17627 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
17628 | if (attr) |
17629 | { | |
e7c27a73 | 17630 | var_decode_location (attr, sym, cu); |
c906108c | 17631 | } |
e142c38c | 17632 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
17633 | if (attr) |
17634 | { | |
e7c27a73 | 17635 | dwarf2_const_value (attr, sym, cu); |
c906108c | 17636 | } |
f346a30d | 17637 | |
e37fd15a | 17638 | list_to_add = cu->list_in_scope; |
c906108c SS |
17639 | break; |
17640 | case DW_TAG_unspecified_parameters: | |
17641 | /* From varargs functions; gdb doesn't seem to have any | |
17642 | interest in this information, so just ignore it for now. | |
17643 | (FIXME?) */ | |
17644 | break; | |
34eaf542 TT |
17645 | case DW_TAG_template_type_param: |
17646 | suppress_add = 1; | |
17647 | /* Fall through. */ | |
c906108c | 17648 | case DW_TAG_class_type: |
680b30c7 | 17649 | case DW_TAG_interface_type: |
c906108c SS |
17650 | case DW_TAG_structure_type: |
17651 | case DW_TAG_union_type: | |
72019c9c | 17652 | case DW_TAG_set_type: |
c906108c | 17653 | case DW_TAG_enumeration_type: |
f1e6e072 | 17654 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 17655 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c906108c | 17656 | |
63d06c5c | 17657 | { |
987504bb | 17658 | /* NOTE: carlton/2003-11-10: C++ and Java class symbols shouldn't |
63d06c5c DC |
17659 | really ever be static objects: otherwise, if you try |
17660 | to, say, break of a class's method and you're in a file | |
17661 | which doesn't mention that class, it won't work unless | |
17662 | the check for all static symbols in lookup_symbol_aux | |
17663 | saves you. See the OtherFileClass tests in | |
17664 | gdb.c++/namespace.exp. */ | |
17665 | ||
e37fd15a | 17666 | if (!suppress_add) |
34eaf542 | 17667 | { |
34eaf542 TT |
17668 | list_to_add = (cu->list_in_scope == &file_symbols |
17669 | && (cu->language == language_cplus | |
17670 | || cu->language == language_java) | |
17671 | ? &global_symbols : cu->list_in_scope); | |
63d06c5c | 17672 | |
64382290 TT |
17673 | /* The semantics of C++ state that "struct foo { |
17674 | ... }" also defines a typedef for "foo". A Java | |
17675 | class declaration also defines a typedef for the | |
17676 | class. */ | |
17677 | if (cu->language == language_cplus | |
17678 | || cu->language == language_java | |
17679 | || cu->language == language_ada) | |
17680 | { | |
17681 | /* The symbol's name is already allocated along | |
17682 | with this objfile, so we don't need to | |
17683 | duplicate it for the type. */ | |
17684 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) | |
17685 | TYPE_NAME (SYMBOL_TYPE (sym)) = SYMBOL_SEARCH_NAME (sym); | |
17686 | } | |
63d06c5c DC |
17687 | } |
17688 | } | |
c906108c SS |
17689 | break; |
17690 | case DW_TAG_typedef: | |
f1e6e072 | 17691 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
63d06c5c | 17692 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 17693 | list_to_add = cu->list_in_scope; |
63d06c5c | 17694 | break; |
c906108c | 17695 | case DW_TAG_base_type: |
a02abb62 | 17696 | case DW_TAG_subrange_type: |
f1e6e072 | 17697 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 17698 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 17699 | list_to_add = cu->list_in_scope; |
c906108c SS |
17700 | break; |
17701 | case DW_TAG_enumerator: | |
e142c38c | 17702 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
17703 | if (attr) |
17704 | { | |
e7c27a73 | 17705 | dwarf2_const_value (attr, sym, cu); |
c906108c | 17706 | } |
63d06c5c DC |
17707 | { |
17708 | /* NOTE: carlton/2003-11-10: See comment above in the | |
17709 | DW_TAG_class_type, etc. block. */ | |
17710 | ||
e142c38c | 17711 | list_to_add = (cu->list_in_scope == &file_symbols |
987504bb JJ |
17712 | && (cu->language == language_cplus |
17713 | || cu->language == language_java) | |
e142c38c | 17714 | ? &global_symbols : cu->list_in_scope); |
63d06c5c | 17715 | } |
c906108c | 17716 | break; |
74921315 | 17717 | case DW_TAG_imported_declaration: |
5c4e30ca | 17718 | case DW_TAG_namespace: |
f1e6e072 | 17719 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
e37fd15a | 17720 | list_to_add = &global_symbols; |
5c4e30ca | 17721 | break; |
530e8392 KB |
17722 | case DW_TAG_module: |
17723 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; | |
17724 | SYMBOL_DOMAIN (sym) = MODULE_DOMAIN; | |
17725 | list_to_add = &global_symbols; | |
17726 | break; | |
4357ac6c | 17727 | case DW_TAG_common_block: |
f1e6e072 | 17728 | SYMBOL_ACLASS_INDEX (sym) = LOC_COMMON_BLOCK; |
4357ac6c TT |
17729 | SYMBOL_DOMAIN (sym) = COMMON_BLOCK_DOMAIN; |
17730 | add_symbol_to_list (sym, cu->list_in_scope); | |
17731 | break; | |
c906108c SS |
17732 | default: |
17733 | /* Not a tag we recognize. Hopefully we aren't processing | |
17734 | trash data, but since we must specifically ignore things | |
17735 | we don't recognize, there is nothing else we should do at | |
0963b4bd | 17736 | this point. */ |
e2e0b3e5 | 17737 | complaint (&symfile_complaints, _("unsupported tag: '%s'"), |
4d3c2250 | 17738 | dwarf_tag_name (die->tag)); |
c906108c SS |
17739 | break; |
17740 | } | |
df8a16a1 | 17741 | |
e37fd15a SW |
17742 | if (suppress_add) |
17743 | { | |
17744 | sym->hash_next = objfile->template_symbols; | |
17745 | objfile->template_symbols = sym; | |
17746 | list_to_add = NULL; | |
17747 | } | |
17748 | ||
17749 | if (list_to_add != NULL) | |
17750 | add_symbol_to_list (sym, list_to_add); | |
17751 | ||
df8a16a1 DJ |
17752 | /* For the benefit of old versions of GCC, check for anonymous |
17753 | namespaces based on the demangled name. */ | |
4d4ec4e5 | 17754 | if (!cu->processing_has_namespace_info |
94af9270 | 17755 | && cu->language == language_cplus) |
a10964d1 | 17756 | cp_scan_for_anonymous_namespaces (sym, objfile); |
c906108c SS |
17757 | } |
17758 | return (sym); | |
17759 | } | |
17760 | ||
34eaf542 TT |
17761 | /* A wrapper for new_symbol_full that always allocates a new symbol. */ |
17762 | ||
17763 | static struct symbol * | |
17764 | new_symbol (struct die_info *die, struct type *type, struct dwarf2_cu *cu) | |
17765 | { | |
17766 | return new_symbol_full (die, type, cu, NULL); | |
17767 | } | |
17768 | ||
98bfdba5 PA |
17769 | /* Given an attr with a DW_FORM_dataN value in host byte order, |
17770 | zero-extend it as appropriate for the symbol's type. The DWARF | |
17771 | standard (v4) is not entirely clear about the meaning of using | |
17772 | DW_FORM_dataN for a constant with a signed type, where the type is | |
17773 | wider than the data. The conclusion of a discussion on the DWARF | |
17774 | list was that this is unspecified. We choose to always zero-extend | |
17775 | because that is the interpretation long in use by GCC. */ | |
c906108c | 17776 | |
98bfdba5 | 17777 | static gdb_byte * |
ff39bb5e | 17778 | dwarf2_const_value_data (const struct attribute *attr, struct obstack *obstack, |
12df843f | 17779 | struct dwarf2_cu *cu, LONGEST *value, int bits) |
c906108c | 17780 | { |
e7c27a73 | 17781 | struct objfile *objfile = cu->objfile; |
e17a4113 UW |
17782 | enum bfd_endian byte_order = bfd_big_endian (objfile->obfd) ? |
17783 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE; | |
98bfdba5 PA |
17784 | LONGEST l = DW_UNSND (attr); |
17785 | ||
17786 | if (bits < sizeof (*value) * 8) | |
17787 | { | |
17788 | l &= ((LONGEST) 1 << bits) - 1; | |
17789 | *value = l; | |
17790 | } | |
17791 | else if (bits == sizeof (*value) * 8) | |
17792 | *value = l; | |
17793 | else | |
17794 | { | |
17795 | gdb_byte *bytes = obstack_alloc (obstack, bits / 8); | |
17796 | store_unsigned_integer (bytes, bits / 8, byte_order, l); | |
17797 | return bytes; | |
17798 | } | |
17799 | ||
17800 | return NULL; | |
17801 | } | |
17802 | ||
17803 | /* Read a constant value from an attribute. Either set *VALUE, or if | |
17804 | the value does not fit in *VALUE, set *BYTES - either already | |
17805 | allocated on the objfile obstack, or newly allocated on OBSTACK, | |
17806 | or, set *BATON, if we translated the constant to a location | |
17807 | expression. */ | |
17808 | ||
17809 | static void | |
ff39bb5e | 17810 | dwarf2_const_value_attr (const struct attribute *attr, struct type *type, |
98bfdba5 PA |
17811 | const char *name, struct obstack *obstack, |
17812 | struct dwarf2_cu *cu, | |
d521ce57 | 17813 | LONGEST *value, const gdb_byte **bytes, |
98bfdba5 PA |
17814 | struct dwarf2_locexpr_baton **baton) |
17815 | { | |
17816 | struct objfile *objfile = cu->objfile; | |
17817 | struct comp_unit_head *cu_header = &cu->header; | |
c906108c | 17818 | struct dwarf_block *blk; |
98bfdba5 PA |
17819 | enum bfd_endian byte_order = (bfd_big_endian (objfile->obfd) ? |
17820 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); | |
17821 | ||
17822 | *value = 0; | |
17823 | *bytes = NULL; | |
17824 | *baton = NULL; | |
c906108c SS |
17825 | |
17826 | switch (attr->form) | |
17827 | { | |
17828 | case DW_FORM_addr: | |
3019eac3 | 17829 | case DW_FORM_GNU_addr_index: |
ac56253d | 17830 | { |
ac56253d TT |
17831 | gdb_byte *data; |
17832 | ||
98bfdba5 PA |
17833 | if (TYPE_LENGTH (type) != cu_header->addr_size) |
17834 | dwarf2_const_value_length_mismatch_complaint (name, | |
ac56253d | 17835 | cu_header->addr_size, |
98bfdba5 | 17836 | TYPE_LENGTH (type)); |
ac56253d TT |
17837 | /* Symbols of this form are reasonably rare, so we just |
17838 | piggyback on the existing location code rather than writing | |
17839 | a new implementation of symbol_computed_ops. */ | |
7919a973 | 17840 | *baton = obstack_alloc (obstack, sizeof (struct dwarf2_locexpr_baton)); |
98bfdba5 PA |
17841 | (*baton)->per_cu = cu->per_cu; |
17842 | gdb_assert ((*baton)->per_cu); | |
ac56253d | 17843 | |
98bfdba5 | 17844 | (*baton)->size = 2 + cu_header->addr_size; |
7919a973 | 17845 | data = obstack_alloc (obstack, (*baton)->size); |
98bfdba5 | 17846 | (*baton)->data = data; |
ac56253d TT |
17847 | |
17848 | data[0] = DW_OP_addr; | |
17849 | store_unsigned_integer (&data[1], cu_header->addr_size, | |
17850 | byte_order, DW_ADDR (attr)); | |
17851 | data[cu_header->addr_size + 1] = DW_OP_stack_value; | |
ac56253d | 17852 | } |
c906108c | 17853 | break; |
4ac36638 | 17854 | case DW_FORM_string: |
93b5768b | 17855 | case DW_FORM_strp: |
3019eac3 | 17856 | case DW_FORM_GNU_str_index: |
36586728 | 17857 | case DW_FORM_GNU_strp_alt: |
98bfdba5 PA |
17858 | /* DW_STRING is already allocated on the objfile obstack, point |
17859 | directly to it. */ | |
d521ce57 | 17860 | *bytes = (const gdb_byte *) DW_STRING (attr); |
93b5768b | 17861 | break; |
c906108c SS |
17862 | case DW_FORM_block1: |
17863 | case DW_FORM_block2: | |
17864 | case DW_FORM_block4: | |
17865 | case DW_FORM_block: | |
2dc7f7b3 | 17866 | case DW_FORM_exprloc: |
c906108c | 17867 | blk = DW_BLOCK (attr); |
98bfdba5 PA |
17868 | if (TYPE_LENGTH (type) != blk->size) |
17869 | dwarf2_const_value_length_mismatch_complaint (name, blk->size, | |
17870 | TYPE_LENGTH (type)); | |
17871 | *bytes = blk->data; | |
c906108c | 17872 | break; |
2df3850c JM |
17873 | |
17874 | /* The DW_AT_const_value attributes are supposed to carry the | |
17875 | symbol's value "represented as it would be on the target | |
17876 | architecture." By the time we get here, it's already been | |
17877 | converted to host endianness, so we just need to sign- or | |
17878 | zero-extend it as appropriate. */ | |
17879 | case DW_FORM_data1: | |
3aef2284 | 17880 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 8); |
2df3850c | 17881 | break; |
c906108c | 17882 | case DW_FORM_data2: |
3aef2284 | 17883 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 16); |
2df3850c | 17884 | break; |
c906108c | 17885 | case DW_FORM_data4: |
3aef2284 | 17886 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 32); |
2df3850c | 17887 | break; |
c906108c | 17888 | case DW_FORM_data8: |
3aef2284 | 17889 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 64); |
2df3850c JM |
17890 | break; |
17891 | ||
c906108c | 17892 | case DW_FORM_sdata: |
98bfdba5 | 17893 | *value = DW_SND (attr); |
2df3850c JM |
17894 | break; |
17895 | ||
c906108c | 17896 | case DW_FORM_udata: |
98bfdba5 | 17897 | *value = DW_UNSND (attr); |
c906108c | 17898 | break; |
2df3850c | 17899 | |
c906108c | 17900 | default: |
4d3c2250 | 17901 | complaint (&symfile_complaints, |
e2e0b3e5 | 17902 | _("unsupported const value attribute form: '%s'"), |
4d3c2250 | 17903 | dwarf_form_name (attr->form)); |
98bfdba5 | 17904 | *value = 0; |
c906108c SS |
17905 | break; |
17906 | } | |
17907 | } | |
17908 | ||
2df3850c | 17909 | |
98bfdba5 PA |
17910 | /* Copy constant value from an attribute to a symbol. */ |
17911 | ||
2df3850c | 17912 | static void |
ff39bb5e | 17913 | dwarf2_const_value (const struct attribute *attr, struct symbol *sym, |
98bfdba5 | 17914 | struct dwarf2_cu *cu) |
2df3850c | 17915 | { |
98bfdba5 PA |
17916 | struct objfile *objfile = cu->objfile; |
17917 | struct comp_unit_head *cu_header = &cu->header; | |
12df843f | 17918 | LONGEST value; |
d521ce57 | 17919 | const gdb_byte *bytes; |
98bfdba5 | 17920 | struct dwarf2_locexpr_baton *baton; |
2df3850c | 17921 | |
98bfdba5 PA |
17922 | dwarf2_const_value_attr (attr, SYMBOL_TYPE (sym), |
17923 | SYMBOL_PRINT_NAME (sym), | |
17924 | &objfile->objfile_obstack, cu, | |
17925 | &value, &bytes, &baton); | |
2df3850c | 17926 | |
98bfdba5 PA |
17927 | if (baton != NULL) |
17928 | { | |
98bfdba5 | 17929 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 17930 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
98bfdba5 PA |
17931 | } |
17932 | else if (bytes != NULL) | |
17933 | { | |
17934 | SYMBOL_VALUE_BYTES (sym) = bytes; | |
f1e6e072 | 17935 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST_BYTES; |
98bfdba5 PA |
17936 | } |
17937 | else | |
17938 | { | |
17939 | SYMBOL_VALUE (sym) = value; | |
f1e6e072 | 17940 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
98bfdba5 | 17941 | } |
2df3850c JM |
17942 | } |
17943 | ||
c906108c SS |
17944 | /* Return the type of the die in question using its DW_AT_type attribute. */ |
17945 | ||
17946 | static struct type * | |
e7c27a73 | 17947 | die_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17948 | { |
c906108c | 17949 | struct attribute *type_attr; |
c906108c | 17950 | |
e142c38c | 17951 | type_attr = dwarf2_attr (die, DW_AT_type, cu); |
c906108c SS |
17952 | if (!type_attr) |
17953 | { | |
17954 | /* A missing DW_AT_type represents a void type. */ | |
46bf5051 | 17955 | return objfile_type (cu->objfile)->builtin_void; |
c906108c | 17956 | } |
348e048f | 17957 | |
673bfd45 | 17958 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
17959 | } |
17960 | ||
b4ba55a1 JB |
17961 | /* True iff CU's producer generates GNAT Ada auxiliary information |
17962 | that allows to find parallel types through that information instead | |
17963 | of having to do expensive parallel lookups by type name. */ | |
17964 | ||
17965 | static int | |
17966 | need_gnat_info (struct dwarf2_cu *cu) | |
17967 | { | |
17968 | /* FIXME: brobecker/2010-10-12: As of now, only the AdaCore version | |
17969 | of GNAT produces this auxiliary information, without any indication | |
17970 | that it is produced. Part of enhancing the FSF version of GNAT | |
17971 | to produce that information will be to put in place an indicator | |
17972 | that we can use in order to determine whether the descriptive type | |
17973 | info is available or not. One suggestion that has been made is | |
17974 | to use a new attribute, attached to the CU die. For now, assume | |
17975 | that the descriptive type info is not available. */ | |
17976 | return 0; | |
17977 | } | |
17978 | ||
b4ba55a1 JB |
17979 | /* Return the auxiliary type of the die in question using its |
17980 | DW_AT_GNAT_descriptive_type attribute. Returns NULL if the | |
17981 | attribute is not present. */ | |
17982 | ||
17983 | static struct type * | |
17984 | die_descriptive_type (struct die_info *die, struct dwarf2_cu *cu) | |
17985 | { | |
b4ba55a1 | 17986 | struct attribute *type_attr; |
b4ba55a1 JB |
17987 | |
17988 | type_attr = dwarf2_attr (die, DW_AT_GNAT_descriptive_type, cu); | |
17989 | if (!type_attr) | |
17990 | return NULL; | |
17991 | ||
673bfd45 | 17992 | return lookup_die_type (die, type_attr, cu); |
b4ba55a1 JB |
17993 | } |
17994 | ||
17995 | /* If DIE has a descriptive_type attribute, then set the TYPE's | |
17996 | descriptive type accordingly. */ | |
17997 | ||
17998 | static void | |
17999 | set_descriptive_type (struct type *type, struct die_info *die, | |
18000 | struct dwarf2_cu *cu) | |
18001 | { | |
18002 | struct type *descriptive_type = die_descriptive_type (die, cu); | |
18003 | ||
18004 | if (descriptive_type) | |
18005 | { | |
18006 | ALLOCATE_GNAT_AUX_TYPE (type); | |
18007 | TYPE_DESCRIPTIVE_TYPE (type) = descriptive_type; | |
18008 | } | |
18009 | } | |
18010 | ||
c906108c SS |
18011 | /* Return the containing type of the die in question using its |
18012 | DW_AT_containing_type attribute. */ | |
18013 | ||
18014 | static struct type * | |
e7c27a73 | 18015 | die_containing_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 18016 | { |
c906108c | 18017 | struct attribute *type_attr; |
c906108c | 18018 | |
e142c38c | 18019 | type_attr = dwarf2_attr (die, DW_AT_containing_type, cu); |
33ac96f0 JK |
18020 | if (!type_attr) |
18021 | error (_("Dwarf Error: Problem turning containing type into gdb type " | |
4262abfb | 18022 | "[in module %s]"), objfile_name (cu->objfile)); |
33ac96f0 | 18023 | |
673bfd45 | 18024 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
18025 | } |
18026 | ||
ac9ec31b DE |
18027 | /* Return an error marker type to use for the ill formed type in DIE/CU. */ |
18028 | ||
18029 | static struct type * | |
18030 | build_error_marker_type (struct dwarf2_cu *cu, struct die_info *die) | |
18031 | { | |
18032 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
18033 | char *message, *saved; | |
18034 | ||
18035 | message = xstrprintf (_("<unknown type in %s, CU 0x%x, DIE 0x%x>"), | |
4262abfb | 18036 | objfile_name (objfile), |
ac9ec31b DE |
18037 | cu->header.offset.sect_off, |
18038 | die->offset.sect_off); | |
18039 | saved = obstack_copy0 (&objfile->objfile_obstack, | |
18040 | message, strlen (message)); | |
18041 | xfree (message); | |
18042 | ||
18043 | return init_type (TYPE_CODE_ERROR, 0, 0, saved, objfile); | |
18044 | } | |
18045 | ||
673bfd45 | 18046 | /* Look up the type of DIE in CU using its type attribute ATTR. |
ac9ec31b DE |
18047 | ATTR must be one of: DW_AT_type, DW_AT_GNAT_descriptive_type, |
18048 | DW_AT_containing_type. | |
673bfd45 DE |
18049 | If there is no type substitute an error marker. */ |
18050 | ||
c906108c | 18051 | static struct type * |
ff39bb5e | 18052 | lookup_die_type (struct die_info *die, const struct attribute *attr, |
673bfd45 | 18053 | struct dwarf2_cu *cu) |
c906108c | 18054 | { |
bb5ed363 | 18055 | struct objfile *objfile = cu->objfile; |
f792889a DJ |
18056 | struct type *this_type; |
18057 | ||
ac9ec31b DE |
18058 | gdb_assert (attr->name == DW_AT_type |
18059 | || attr->name == DW_AT_GNAT_descriptive_type | |
18060 | || attr->name == DW_AT_containing_type); | |
18061 | ||
673bfd45 DE |
18062 | /* First see if we have it cached. */ |
18063 | ||
36586728 TT |
18064 | if (attr->form == DW_FORM_GNU_ref_alt) |
18065 | { | |
18066 | struct dwarf2_per_cu_data *per_cu; | |
18067 | sect_offset offset = dwarf2_get_ref_die_offset (attr); | |
18068 | ||
18069 | per_cu = dwarf2_find_containing_comp_unit (offset, 1, cu->objfile); | |
18070 | this_type = get_die_type_at_offset (offset, per_cu); | |
18071 | } | |
7771576e | 18072 | else if (attr_form_is_ref (attr)) |
673bfd45 | 18073 | { |
b64f50a1 | 18074 | sect_offset offset = dwarf2_get_ref_die_offset (attr); |
673bfd45 DE |
18075 | |
18076 | this_type = get_die_type_at_offset (offset, cu->per_cu); | |
18077 | } | |
55f1336d | 18078 | else if (attr->form == DW_FORM_ref_sig8) |
673bfd45 | 18079 | { |
ac9ec31b | 18080 | ULONGEST signature = DW_SIGNATURE (attr); |
673bfd45 | 18081 | |
ac9ec31b | 18082 | return get_signatured_type (die, signature, cu); |
673bfd45 DE |
18083 | } |
18084 | else | |
18085 | { | |
ac9ec31b DE |
18086 | complaint (&symfile_complaints, |
18087 | _("Dwarf Error: Bad type attribute %s in DIE" | |
18088 | " at 0x%x [in module %s]"), | |
18089 | dwarf_attr_name (attr->name), die->offset.sect_off, | |
4262abfb | 18090 | objfile_name (objfile)); |
ac9ec31b | 18091 | return build_error_marker_type (cu, die); |
673bfd45 DE |
18092 | } |
18093 | ||
18094 | /* If not cached we need to read it in. */ | |
18095 | ||
18096 | if (this_type == NULL) | |
18097 | { | |
ac9ec31b | 18098 | struct die_info *type_die = NULL; |
673bfd45 DE |
18099 | struct dwarf2_cu *type_cu = cu; |
18100 | ||
7771576e | 18101 | if (attr_form_is_ref (attr)) |
ac9ec31b DE |
18102 | type_die = follow_die_ref (die, attr, &type_cu); |
18103 | if (type_die == NULL) | |
18104 | return build_error_marker_type (cu, die); | |
18105 | /* If we find the type now, it's probably because the type came | |
3019eac3 DE |
18106 | from an inter-CU reference and the type's CU got expanded before |
18107 | ours. */ | |
ac9ec31b | 18108 | this_type = read_type_die (type_die, type_cu); |
673bfd45 DE |
18109 | } |
18110 | ||
18111 | /* If we still don't have a type use an error marker. */ | |
18112 | ||
18113 | if (this_type == NULL) | |
ac9ec31b | 18114 | return build_error_marker_type (cu, die); |
673bfd45 | 18115 | |
f792889a | 18116 | return this_type; |
c906108c SS |
18117 | } |
18118 | ||
673bfd45 DE |
18119 | /* Return the type in DIE, CU. |
18120 | Returns NULL for invalid types. | |
18121 | ||
02142a6c | 18122 | This first does a lookup in die_type_hash, |
673bfd45 DE |
18123 | and only reads the die in if necessary. |
18124 | ||
18125 | NOTE: This can be called when reading in partial or full symbols. */ | |
18126 | ||
f792889a | 18127 | static struct type * |
e7c27a73 | 18128 | read_type_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 18129 | { |
f792889a DJ |
18130 | struct type *this_type; |
18131 | ||
18132 | this_type = get_die_type (die, cu); | |
18133 | if (this_type) | |
18134 | return this_type; | |
18135 | ||
673bfd45 DE |
18136 | return read_type_die_1 (die, cu); |
18137 | } | |
18138 | ||
18139 | /* Read the type in DIE, CU. | |
18140 | Returns NULL for invalid types. */ | |
18141 | ||
18142 | static struct type * | |
18143 | read_type_die_1 (struct die_info *die, struct dwarf2_cu *cu) | |
18144 | { | |
18145 | struct type *this_type = NULL; | |
18146 | ||
c906108c SS |
18147 | switch (die->tag) |
18148 | { | |
18149 | case DW_TAG_class_type: | |
680b30c7 | 18150 | case DW_TAG_interface_type: |
c906108c SS |
18151 | case DW_TAG_structure_type: |
18152 | case DW_TAG_union_type: | |
f792889a | 18153 | this_type = read_structure_type (die, cu); |
c906108c SS |
18154 | break; |
18155 | case DW_TAG_enumeration_type: | |
f792889a | 18156 | this_type = read_enumeration_type (die, cu); |
c906108c SS |
18157 | break; |
18158 | case DW_TAG_subprogram: | |
18159 | case DW_TAG_subroutine_type: | |
edb3359d | 18160 | case DW_TAG_inlined_subroutine: |
f792889a | 18161 | this_type = read_subroutine_type (die, cu); |
c906108c SS |
18162 | break; |
18163 | case DW_TAG_array_type: | |
f792889a | 18164 | this_type = read_array_type (die, cu); |
c906108c | 18165 | break; |
72019c9c | 18166 | case DW_TAG_set_type: |
f792889a | 18167 | this_type = read_set_type (die, cu); |
72019c9c | 18168 | break; |
c906108c | 18169 | case DW_TAG_pointer_type: |
f792889a | 18170 | this_type = read_tag_pointer_type (die, cu); |
c906108c SS |
18171 | break; |
18172 | case DW_TAG_ptr_to_member_type: | |
f792889a | 18173 | this_type = read_tag_ptr_to_member_type (die, cu); |
c906108c SS |
18174 | break; |
18175 | case DW_TAG_reference_type: | |
f792889a | 18176 | this_type = read_tag_reference_type (die, cu); |
c906108c SS |
18177 | break; |
18178 | case DW_TAG_const_type: | |
f792889a | 18179 | this_type = read_tag_const_type (die, cu); |
c906108c SS |
18180 | break; |
18181 | case DW_TAG_volatile_type: | |
f792889a | 18182 | this_type = read_tag_volatile_type (die, cu); |
c906108c | 18183 | break; |
06d66ee9 TT |
18184 | case DW_TAG_restrict_type: |
18185 | this_type = read_tag_restrict_type (die, cu); | |
18186 | break; | |
c906108c | 18187 | case DW_TAG_string_type: |
f792889a | 18188 | this_type = read_tag_string_type (die, cu); |
c906108c SS |
18189 | break; |
18190 | case DW_TAG_typedef: | |
f792889a | 18191 | this_type = read_typedef (die, cu); |
c906108c | 18192 | break; |
a02abb62 | 18193 | case DW_TAG_subrange_type: |
f792889a | 18194 | this_type = read_subrange_type (die, cu); |
a02abb62 | 18195 | break; |
c906108c | 18196 | case DW_TAG_base_type: |
f792889a | 18197 | this_type = read_base_type (die, cu); |
c906108c | 18198 | break; |
81a17f79 | 18199 | case DW_TAG_unspecified_type: |
f792889a | 18200 | this_type = read_unspecified_type (die, cu); |
81a17f79 | 18201 | break; |
0114d602 DJ |
18202 | case DW_TAG_namespace: |
18203 | this_type = read_namespace_type (die, cu); | |
18204 | break; | |
f55ee35c JK |
18205 | case DW_TAG_module: |
18206 | this_type = read_module_type (die, cu); | |
18207 | break; | |
c906108c | 18208 | default: |
3e43a32a MS |
18209 | complaint (&symfile_complaints, |
18210 | _("unexpected tag in read_type_die: '%s'"), | |
4d3c2250 | 18211 | dwarf_tag_name (die->tag)); |
c906108c SS |
18212 | break; |
18213 | } | |
63d06c5c | 18214 | |
f792889a | 18215 | return this_type; |
63d06c5c DC |
18216 | } |
18217 | ||
abc72ce4 DE |
18218 | /* See if we can figure out if the class lives in a namespace. We do |
18219 | this by looking for a member function; its demangled name will | |
18220 | contain namespace info, if there is any. | |
18221 | Return the computed name or NULL. | |
18222 | Space for the result is allocated on the objfile's obstack. | |
18223 | This is the full-die version of guess_partial_die_structure_name. | |
18224 | In this case we know DIE has no useful parent. */ | |
18225 | ||
18226 | static char * | |
18227 | guess_full_die_structure_name (struct die_info *die, struct dwarf2_cu *cu) | |
18228 | { | |
18229 | struct die_info *spec_die; | |
18230 | struct dwarf2_cu *spec_cu; | |
18231 | struct die_info *child; | |
18232 | ||
18233 | spec_cu = cu; | |
18234 | spec_die = die_specification (die, &spec_cu); | |
18235 | if (spec_die != NULL) | |
18236 | { | |
18237 | die = spec_die; | |
18238 | cu = spec_cu; | |
18239 | } | |
18240 | ||
18241 | for (child = die->child; | |
18242 | child != NULL; | |
18243 | child = child->sibling) | |
18244 | { | |
18245 | if (child->tag == DW_TAG_subprogram) | |
18246 | { | |
18247 | struct attribute *attr; | |
18248 | ||
18249 | attr = dwarf2_attr (child, DW_AT_linkage_name, cu); | |
18250 | if (attr == NULL) | |
18251 | attr = dwarf2_attr (child, DW_AT_MIPS_linkage_name, cu); | |
18252 | if (attr != NULL) | |
18253 | { | |
18254 | char *actual_name | |
18255 | = language_class_name_from_physname (cu->language_defn, | |
18256 | DW_STRING (attr)); | |
18257 | char *name = NULL; | |
18258 | ||
18259 | if (actual_name != NULL) | |
18260 | { | |
15d034d0 | 18261 | const char *die_name = dwarf2_name (die, cu); |
abc72ce4 DE |
18262 | |
18263 | if (die_name != NULL | |
18264 | && strcmp (die_name, actual_name) != 0) | |
18265 | { | |
18266 | /* Strip off the class name from the full name. | |
18267 | We want the prefix. */ | |
18268 | int die_name_len = strlen (die_name); | |
18269 | int actual_name_len = strlen (actual_name); | |
18270 | ||
18271 | /* Test for '::' as a sanity check. */ | |
18272 | if (actual_name_len > die_name_len + 2 | |
3e43a32a MS |
18273 | && actual_name[actual_name_len |
18274 | - die_name_len - 1] == ':') | |
abc72ce4 | 18275 | name = |
10f0c4bb TT |
18276 | obstack_copy0 (&cu->objfile->objfile_obstack, |
18277 | actual_name, | |
18278 | actual_name_len - die_name_len - 2); | |
abc72ce4 DE |
18279 | } |
18280 | } | |
18281 | xfree (actual_name); | |
18282 | return name; | |
18283 | } | |
18284 | } | |
18285 | } | |
18286 | ||
18287 | return NULL; | |
18288 | } | |
18289 | ||
96408a79 SA |
18290 | /* GCC might emit a nameless typedef that has a linkage name. Determine the |
18291 | prefix part in such case. See | |
18292 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
18293 | ||
18294 | static char * | |
18295 | anonymous_struct_prefix (struct die_info *die, struct dwarf2_cu *cu) | |
18296 | { | |
18297 | struct attribute *attr; | |
18298 | char *base; | |
18299 | ||
18300 | if (die->tag != DW_TAG_class_type && die->tag != DW_TAG_interface_type | |
18301 | && die->tag != DW_TAG_structure_type && die->tag != DW_TAG_union_type) | |
18302 | return NULL; | |
18303 | ||
18304 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
18305 | if (attr != NULL && DW_STRING (attr) != NULL) | |
18306 | return NULL; | |
18307 | ||
18308 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
18309 | if (attr == NULL) | |
18310 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
18311 | if (attr == NULL || DW_STRING (attr) == NULL) | |
18312 | return NULL; | |
18313 | ||
18314 | /* dwarf2_name had to be already called. */ | |
18315 | gdb_assert (DW_STRING_IS_CANONICAL (attr)); | |
18316 | ||
18317 | /* Strip the base name, keep any leading namespaces/classes. */ | |
18318 | base = strrchr (DW_STRING (attr), ':'); | |
18319 | if (base == NULL || base == DW_STRING (attr) || base[-1] != ':') | |
18320 | return ""; | |
18321 | ||
10f0c4bb TT |
18322 | return obstack_copy0 (&cu->objfile->objfile_obstack, |
18323 | DW_STRING (attr), &base[-1] - DW_STRING (attr)); | |
96408a79 SA |
18324 | } |
18325 | ||
fdde2d81 | 18326 | /* Return the name of the namespace/class that DIE is defined within, |
0114d602 | 18327 | or "" if we can't tell. The caller should not xfree the result. |
fdde2d81 | 18328 | |
0114d602 DJ |
18329 | For example, if we're within the method foo() in the following |
18330 | code: | |
18331 | ||
18332 | namespace N { | |
18333 | class C { | |
18334 | void foo () { | |
18335 | } | |
18336 | }; | |
18337 | } | |
18338 | ||
18339 | then determine_prefix on foo's die will return "N::C". */ | |
fdde2d81 | 18340 | |
0d5cff50 | 18341 | static const char * |
e142c38c | 18342 | determine_prefix (struct die_info *die, struct dwarf2_cu *cu) |
63d06c5c | 18343 | { |
0114d602 DJ |
18344 | struct die_info *parent, *spec_die; |
18345 | struct dwarf2_cu *spec_cu; | |
18346 | struct type *parent_type; | |
96408a79 | 18347 | char *retval; |
63d06c5c | 18348 | |
f55ee35c JK |
18349 | if (cu->language != language_cplus && cu->language != language_java |
18350 | && cu->language != language_fortran) | |
0114d602 DJ |
18351 | return ""; |
18352 | ||
96408a79 SA |
18353 | retval = anonymous_struct_prefix (die, cu); |
18354 | if (retval) | |
18355 | return retval; | |
18356 | ||
0114d602 DJ |
18357 | /* We have to be careful in the presence of DW_AT_specification. |
18358 | For example, with GCC 3.4, given the code | |
18359 | ||
18360 | namespace N { | |
18361 | void foo() { | |
18362 | // Definition of N::foo. | |
18363 | } | |
18364 | } | |
18365 | ||
18366 | then we'll have a tree of DIEs like this: | |
18367 | ||
18368 | 1: DW_TAG_compile_unit | |
18369 | 2: DW_TAG_namespace // N | |
18370 | 3: DW_TAG_subprogram // declaration of N::foo | |
18371 | 4: DW_TAG_subprogram // definition of N::foo | |
18372 | DW_AT_specification // refers to die #3 | |
18373 | ||
18374 | Thus, when processing die #4, we have to pretend that we're in | |
18375 | the context of its DW_AT_specification, namely the contex of die | |
18376 | #3. */ | |
18377 | spec_cu = cu; | |
18378 | spec_die = die_specification (die, &spec_cu); | |
18379 | if (spec_die == NULL) | |
18380 | parent = die->parent; | |
18381 | else | |
63d06c5c | 18382 | { |
0114d602 DJ |
18383 | parent = spec_die->parent; |
18384 | cu = spec_cu; | |
63d06c5c | 18385 | } |
0114d602 DJ |
18386 | |
18387 | if (parent == NULL) | |
18388 | return ""; | |
98bfdba5 PA |
18389 | else if (parent->building_fullname) |
18390 | { | |
18391 | const char *name; | |
18392 | const char *parent_name; | |
18393 | ||
18394 | /* It has been seen on RealView 2.2 built binaries, | |
18395 | DW_TAG_template_type_param types actually _defined_ as | |
18396 | children of the parent class: | |
18397 | ||
18398 | enum E {}; | |
18399 | template class <class Enum> Class{}; | |
18400 | Class<enum E> class_e; | |
18401 | ||
18402 | 1: DW_TAG_class_type (Class) | |
18403 | 2: DW_TAG_enumeration_type (E) | |
18404 | 3: DW_TAG_enumerator (enum1:0) | |
18405 | 3: DW_TAG_enumerator (enum2:1) | |
18406 | ... | |
18407 | 2: DW_TAG_template_type_param | |
18408 | DW_AT_type DW_FORM_ref_udata (E) | |
18409 | ||
18410 | Besides being broken debug info, it can put GDB into an | |
18411 | infinite loop. Consider: | |
18412 | ||
18413 | When we're building the full name for Class<E>, we'll start | |
18414 | at Class, and go look over its template type parameters, | |
18415 | finding E. We'll then try to build the full name of E, and | |
18416 | reach here. We're now trying to build the full name of E, | |
18417 | and look over the parent DIE for containing scope. In the | |
18418 | broken case, if we followed the parent DIE of E, we'd again | |
18419 | find Class, and once again go look at its template type | |
18420 | arguments, etc., etc. Simply don't consider such parent die | |
18421 | as source-level parent of this die (it can't be, the language | |
18422 | doesn't allow it), and break the loop here. */ | |
18423 | name = dwarf2_name (die, cu); | |
18424 | parent_name = dwarf2_name (parent, cu); | |
18425 | complaint (&symfile_complaints, | |
18426 | _("template param type '%s' defined within parent '%s'"), | |
18427 | name ? name : "<unknown>", | |
18428 | parent_name ? parent_name : "<unknown>"); | |
18429 | return ""; | |
18430 | } | |
63d06c5c | 18431 | else |
0114d602 DJ |
18432 | switch (parent->tag) |
18433 | { | |
63d06c5c | 18434 | case DW_TAG_namespace: |
0114d602 | 18435 | parent_type = read_type_die (parent, cu); |
acebe513 UW |
18436 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
18437 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
18438 | Work around this problem here. */ | |
18439 | if (cu->language == language_cplus | |
18440 | && strcmp (TYPE_TAG_NAME (parent_type), "::") == 0) | |
18441 | return ""; | |
0114d602 DJ |
18442 | /* We give a name to even anonymous namespaces. */ |
18443 | return TYPE_TAG_NAME (parent_type); | |
63d06c5c | 18444 | case DW_TAG_class_type: |
680b30c7 | 18445 | case DW_TAG_interface_type: |
63d06c5c | 18446 | case DW_TAG_structure_type: |
0114d602 | 18447 | case DW_TAG_union_type: |
f55ee35c | 18448 | case DW_TAG_module: |
0114d602 DJ |
18449 | parent_type = read_type_die (parent, cu); |
18450 | if (TYPE_TAG_NAME (parent_type) != NULL) | |
18451 | return TYPE_TAG_NAME (parent_type); | |
18452 | else | |
18453 | /* An anonymous structure is only allowed non-static data | |
18454 | members; no typedefs, no member functions, et cetera. | |
18455 | So it does not need a prefix. */ | |
18456 | return ""; | |
abc72ce4 | 18457 | case DW_TAG_compile_unit: |
95554aad | 18458 | case DW_TAG_partial_unit: |
abc72ce4 DE |
18459 | /* gcc-4.5 -gdwarf-4 can drop the enclosing namespace. Cope. */ |
18460 | if (cu->language == language_cplus | |
8b70b953 | 18461 | && !VEC_empty (dwarf2_section_info_def, dwarf2_per_objfile->types) |
abc72ce4 DE |
18462 | && die->child != NULL |
18463 | && (die->tag == DW_TAG_class_type | |
18464 | || die->tag == DW_TAG_structure_type | |
18465 | || die->tag == DW_TAG_union_type)) | |
18466 | { | |
18467 | char *name = guess_full_die_structure_name (die, cu); | |
18468 | if (name != NULL) | |
18469 | return name; | |
18470 | } | |
18471 | return ""; | |
63d06c5c | 18472 | default: |
8176b9b8 | 18473 | return determine_prefix (parent, cu); |
63d06c5c | 18474 | } |
63d06c5c DC |
18475 | } |
18476 | ||
3e43a32a MS |
18477 | /* Return a newly-allocated string formed by concatenating PREFIX and SUFFIX |
18478 | with appropriate separator. If PREFIX or SUFFIX is NULL or empty, then | |
18479 | simply copy the SUFFIX or PREFIX, respectively. If OBS is non-null, perform | |
18480 | an obconcat, otherwise allocate storage for the result. The CU argument is | |
18481 | used to determine the language and hence, the appropriate separator. */ | |
987504bb | 18482 | |
f55ee35c | 18483 | #define MAX_SEP_LEN 7 /* strlen ("__") + strlen ("_MOD_") */ |
63d06c5c DC |
18484 | |
18485 | static char * | |
f55ee35c JK |
18486 | typename_concat (struct obstack *obs, const char *prefix, const char *suffix, |
18487 | int physname, struct dwarf2_cu *cu) | |
63d06c5c | 18488 | { |
f55ee35c | 18489 | const char *lead = ""; |
5c315b68 | 18490 | const char *sep; |
63d06c5c | 18491 | |
3e43a32a MS |
18492 | if (suffix == NULL || suffix[0] == '\0' |
18493 | || prefix == NULL || prefix[0] == '\0') | |
987504bb JJ |
18494 | sep = ""; |
18495 | else if (cu->language == language_java) | |
18496 | sep = "."; | |
f55ee35c JK |
18497 | else if (cu->language == language_fortran && physname) |
18498 | { | |
18499 | /* This is gfortran specific mangling. Normally DW_AT_linkage_name or | |
18500 | DW_AT_MIPS_linkage_name is preferred and used instead. */ | |
18501 | ||
18502 | lead = "__"; | |
18503 | sep = "_MOD_"; | |
18504 | } | |
987504bb JJ |
18505 | else |
18506 | sep = "::"; | |
63d06c5c | 18507 | |
6dd47d34 DE |
18508 | if (prefix == NULL) |
18509 | prefix = ""; | |
18510 | if (suffix == NULL) | |
18511 | suffix = ""; | |
18512 | ||
987504bb JJ |
18513 | if (obs == NULL) |
18514 | { | |
3e43a32a MS |
18515 | char *retval |
18516 | = xmalloc (strlen (prefix) + MAX_SEP_LEN + strlen (suffix) + 1); | |
9a619af0 | 18517 | |
f55ee35c JK |
18518 | strcpy (retval, lead); |
18519 | strcat (retval, prefix); | |
6dd47d34 DE |
18520 | strcat (retval, sep); |
18521 | strcat (retval, suffix); | |
63d06c5c DC |
18522 | return retval; |
18523 | } | |
987504bb JJ |
18524 | else |
18525 | { | |
18526 | /* We have an obstack. */ | |
f55ee35c | 18527 | return obconcat (obs, lead, prefix, sep, suffix, (char *) NULL); |
987504bb | 18528 | } |
63d06c5c DC |
18529 | } |
18530 | ||
c906108c SS |
18531 | /* Return sibling of die, NULL if no sibling. */ |
18532 | ||
f9aca02d | 18533 | static struct die_info * |
fba45db2 | 18534 | sibling_die (struct die_info *die) |
c906108c | 18535 | { |
639d11d3 | 18536 | return die->sibling; |
c906108c SS |
18537 | } |
18538 | ||
71c25dea TT |
18539 | /* Get name of a die, return NULL if not found. */ |
18540 | ||
15d034d0 TT |
18541 | static const char * |
18542 | dwarf2_canonicalize_name (const char *name, struct dwarf2_cu *cu, | |
71c25dea TT |
18543 | struct obstack *obstack) |
18544 | { | |
18545 | if (name && cu->language == language_cplus) | |
18546 | { | |
18547 | char *canon_name = cp_canonicalize_string (name); | |
18548 | ||
18549 | if (canon_name != NULL) | |
18550 | { | |
18551 | if (strcmp (canon_name, name) != 0) | |
10f0c4bb | 18552 | name = obstack_copy0 (obstack, canon_name, strlen (canon_name)); |
71c25dea TT |
18553 | xfree (canon_name); |
18554 | } | |
18555 | } | |
18556 | ||
18557 | return name; | |
c906108c SS |
18558 | } |
18559 | ||
9219021c DC |
18560 | /* Get name of a die, return NULL if not found. */ |
18561 | ||
15d034d0 | 18562 | static const char * |
e142c38c | 18563 | dwarf2_name (struct die_info *die, struct dwarf2_cu *cu) |
9219021c DC |
18564 | { |
18565 | struct attribute *attr; | |
18566 | ||
e142c38c | 18567 | attr = dwarf2_attr (die, DW_AT_name, cu); |
53832f31 TT |
18568 | if ((!attr || !DW_STRING (attr)) |
18569 | && die->tag != DW_TAG_class_type | |
18570 | && die->tag != DW_TAG_interface_type | |
18571 | && die->tag != DW_TAG_structure_type | |
18572 | && die->tag != DW_TAG_union_type) | |
71c25dea TT |
18573 | return NULL; |
18574 | ||
18575 | switch (die->tag) | |
18576 | { | |
18577 | case DW_TAG_compile_unit: | |
95554aad | 18578 | case DW_TAG_partial_unit: |
71c25dea TT |
18579 | /* Compilation units have a DW_AT_name that is a filename, not |
18580 | a source language identifier. */ | |
18581 | case DW_TAG_enumeration_type: | |
18582 | case DW_TAG_enumerator: | |
18583 | /* These tags always have simple identifiers already; no need | |
18584 | to canonicalize them. */ | |
18585 | return DW_STRING (attr); | |
907af001 | 18586 | |
418835cc KS |
18587 | case DW_TAG_subprogram: |
18588 | /* Java constructors will all be named "<init>", so return | |
18589 | the class name when we see this special case. */ | |
18590 | if (cu->language == language_java | |
18591 | && DW_STRING (attr) != NULL | |
18592 | && strcmp (DW_STRING (attr), "<init>") == 0) | |
18593 | { | |
18594 | struct dwarf2_cu *spec_cu = cu; | |
18595 | struct die_info *spec_die; | |
18596 | ||
18597 | /* GCJ will output '<init>' for Java constructor names. | |
18598 | For this special case, return the name of the parent class. */ | |
18599 | ||
18600 | /* GCJ may output suprogram DIEs with AT_specification set. | |
18601 | If so, use the name of the specified DIE. */ | |
18602 | spec_die = die_specification (die, &spec_cu); | |
18603 | if (spec_die != NULL) | |
18604 | return dwarf2_name (spec_die, spec_cu); | |
18605 | ||
18606 | do | |
18607 | { | |
18608 | die = die->parent; | |
18609 | if (die->tag == DW_TAG_class_type) | |
18610 | return dwarf2_name (die, cu); | |
18611 | } | |
95554aad TT |
18612 | while (die->tag != DW_TAG_compile_unit |
18613 | && die->tag != DW_TAG_partial_unit); | |
418835cc | 18614 | } |
907af001 UW |
18615 | break; |
18616 | ||
18617 | case DW_TAG_class_type: | |
18618 | case DW_TAG_interface_type: | |
18619 | case DW_TAG_structure_type: | |
18620 | case DW_TAG_union_type: | |
18621 | /* Some GCC versions emit spurious DW_AT_name attributes for unnamed | |
18622 | structures or unions. These were of the form "._%d" in GCC 4.1, | |
18623 | or simply "<anonymous struct>" or "<anonymous union>" in GCC 4.3 | |
18624 | and GCC 4.4. We work around this problem by ignoring these. */ | |
53832f31 TT |
18625 | if (attr && DW_STRING (attr) |
18626 | && (strncmp (DW_STRING (attr), "._", 2) == 0 | |
18627 | || strncmp (DW_STRING (attr), "<anonymous", 10) == 0)) | |
907af001 | 18628 | return NULL; |
53832f31 TT |
18629 | |
18630 | /* GCC might emit a nameless typedef that has a linkage name. See | |
18631 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
18632 | if (!attr || DW_STRING (attr) == NULL) | |
18633 | { | |
df5c6c50 | 18634 | char *demangled = NULL; |
53832f31 TT |
18635 | |
18636 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
18637 | if (attr == NULL) | |
18638 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
18639 | ||
18640 | if (attr == NULL || DW_STRING (attr) == NULL) | |
18641 | return NULL; | |
18642 | ||
df5c6c50 JK |
18643 | /* Avoid demangling DW_STRING (attr) the second time on a second |
18644 | call for the same DIE. */ | |
18645 | if (!DW_STRING_IS_CANONICAL (attr)) | |
8de20a37 | 18646 | demangled = gdb_demangle (DW_STRING (attr), DMGL_TYPES); |
53832f31 TT |
18647 | |
18648 | if (demangled) | |
18649 | { | |
96408a79 SA |
18650 | char *base; |
18651 | ||
53832f31 | 18652 | /* FIXME: we already did this for the partial symbol... */ |
10f0c4bb TT |
18653 | DW_STRING (attr) = obstack_copy0 (&cu->objfile->objfile_obstack, |
18654 | demangled, strlen (demangled)); | |
53832f31 TT |
18655 | DW_STRING_IS_CANONICAL (attr) = 1; |
18656 | xfree (demangled); | |
96408a79 SA |
18657 | |
18658 | /* Strip any leading namespaces/classes, keep only the base name. | |
18659 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
18660 | base = strrchr (DW_STRING (attr), ':'); | |
18661 | if (base && base > DW_STRING (attr) && base[-1] == ':') | |
18662 | return &base[1]; | |
18663 | else | |
18664 | return DW_STRING (attr); | |
53832f31 TT |
18665 | } |
18666 | } | |
907af001 UW |
18667 | break; |
18668 | ||
71c25dea | 18669 | default: |
907af001 UW |
18670 | break; |
18671 | } | |
18672 | ||
18673 | if (!DW_STRING_IS_CANONICAL (attr)) | |
18674 | { | |
18675 | DW_STRING (attr) | |
18676 | = dwarf2_canonicalize_name (DW_STRING (attr), cu, | |
18677 | &cu->objfile->objfile_obstack); | |
18678 | DW_STRING_IS_CANONICAL (attr) = 1; | |
71c25dea | 18679 | } |
907af001 | 18680 | return DW_STRING (attr); |
9219021c DC |
18681 | } |
18682 | ||
18683 | /* Return the die that this die in an extension of, or NULL if there | |
f2f0e013 DJ |
18684 | is none. *EXT_CU is the CU containing DIE on input, and the CU |
18685 | containing the return value on output. */ | |
9219021c DC |
18686 | |
18687 | static struct die_info * | |
f2f0e013 | 18688 | dwarf2_extension (struct die_info *die, struct dwarf2_cu **ext_cu) |
9219021c DC |
18689 | { |
18690 | struct attribute *attr; | |
9219021c | 18691 | |
f2f0e013 | 18692 | attr = dwarf2_attr (die, DW_AT_extension, *ext_cu); |
9219021c DC |
18693 | if (attr == NULL) |
18694 | return NULL; | |
18695 | ||
f2f0e013 | 18696 | return follow_die_ref (die, attr, ext_cu); |
9219021c DC |
18697 | } |
18698 | ||
c906108c SS |
18699 | /* Convert a DIE tag into its string name. */ |
18700 | ||
f39c6ffd | 18701 | static const char * |
aa1ee363 | 18702 | dwarf_tag_name (unsigned tag) |
c906108c | 18703 | { |
f39c6ffd TT |
18704 | const char *name = get_DW_TAG_name (tag); |
18705 | ||
18706 | if (name == NULL) | |
18707 | return "DW_TAG_<unknown>"; | |
18708 | ||
18709 | return name; | |
c906108c SS |
18710 | } |
18711 | ||
18712 | /* Convert a DWARF attribute code into its string name. */ | |
18713 | ||
f39c6ffd | 18714 | static const char * |
aa1ee363 | 18715 | dwarf_attr_name (unsigned attr) |
c906108c | 18716 | { |
f39c6ffd TT |
18717 | const char *name; |
18718 | ||
c764a876 | 18719 | #ifdef MIPS /* collides with DW_AT_HP_block_index */ |
f39c6ffd TT |
18720 | if (attr == DW_AT_MIPS_fde) |
18721 | return "DW_AT_MIPS_fde"; | |
18722 | #else | |
18723 | if (attr == DW_AT_HP_block_index) | |
18724 | return "DW_AT_HP_block_index"; | |
c764a876 | 18725 | #endif |
f39c6ffd TT |
18726 | |
18727 | name = get_DW_AT_name (attr); | |
18728 | ||
18729 | if (name == NULL) | |
18730 | return "DW_AT_<unknown>"; | |
18731 | ||
18732 | return name; | |
c906108c SS |
18733 | } |
18734 | ||
18735 | /* Convert a DWARF value form code into its string name. */ | |
18736 | ||
f39c6ffd | 18737 | static const char * |
aa1ee363 | 18738 | dwarf_form_name (unsigned form) |
c906108c | 18739 | { |
f39c6ffd TT |
18740 | const char *name = get_DW_FORM_name (form); |
18741 | ||
18742 | if (name == NULL) | |
18743 | return "DW_FORM_<unknown>"; | |
18744 | ||
18745 | return name; | |
c906108c SS |
18746 | } |
18747 | ||
18748 | static char * | |
fba45db2 | 18749 | dwarf_bool_name (unsigned mybool) |
c906108c SS |
18750 | { |
18751 | if (mybool) | |
18752 | return "TRUE"; | |
18753 | else | |
18754 | return "FALSE"; | |
18755 | } | |
18756 | ||
18757 | /* Convert a DWARF type code into its string name. */ | |
18758 | ||
f39c6ffd | 18759 | static const char * |
aa1ee363 | 18760 | dwarf_type_encoding_name (unsigned enc) |
c906108c | 18761 | { |
f39c6ffd | 18762 | const char *name = get_DW_ATE_name (enc); |
c906108c | 18763 | |
f39c6ffd TT |
18764 | if (name == NULL) |
18765 | return "DW_ATE_<unknown>"; | |
c906108c | 18766 | |
f39c6ffd | 18767 | return name; |
c906108c | 18768 | } |
c906108c | 18769 | |
f9aca02d | 18770 | static void |
d97bc12b | 18771 | dump_die_shallow (struct ui_file *f, int indent, struct die_info *die) |
c906108c SS |
18772 | { |
18773 | unsigned int i; | |
18774 | ||
d97bc12b DE |
18775 | print_spaces (indent, f); |
18776 | fprintf_unfiltered (f, "Die: %s (abbrev %d, offset 0x%x)\n", | |
b64f50a1 | 18777 | dwarf_tag_name (die->tag), die->abbrev, die->offset.sect_off); |
d97bc12b DE |
18778 | |
18779 | if (die->parent != NULL) | |
18780 | { | |
18781 | print_spaces (indent, f); | |
18782 | fprintf_unfiltered (f, " parent at offset: 0x%x\n", | |
b64f50a1 | 18783 | die->parent->offset.sect_off); |
d97bc12b DE |
18784 | } |
18785 | ||
18786 | print_spaces (indent, f); | |
18787 | fprintf_unfiltered (f, " has children: %s\n", | |
639d11d3 | 18788 | dwarf_bool_name (die->child != NULL)); |
c906108c | 18789 | |
d97bc12b DE |
18790 | print_spaces (indent, f); |
18791 | fprintf_unfiltered (f, " attributes:\n"); | |
18792 | ||
c906108c SS |
18793 | for (i = 0; i < die->num_attrs; ++i) |
18794 | { | |
d97bc12b DE |
18795 | print_spaces (indent, f); |
18796 | fprintf_unfiltered (f, " %s (%s) ", | |
c906108c SS |
18797 | dwarf_attr_name (die->attrs[i].name), |
18798 | dwarf_form_name (die->attrs[i].form)); | |
d97bc12b | 18799 | |
c906108c SS |
18800 | switch (die->attrs[i].form) |
18801 | { | |
c906108c | 18802 | case DW_FORM_addr: |
3019eac3 | 18803 | case DW_FORM_GNU_addr_index: |
d97bc12b | 18804 | fprintf_unfiltered (f, "address: "); |
5af949e3 | 18805 | fputs_filtered (hex_string (DW_ADDR (&die->attrs[i])), f); |
c906108c SS |
18806 | break; |
18807 | case DW_FORM_block2: | |
18808 | case DW_FORM_block4: | |
18809 | case DW_FORM_block: | |
18810 | case DW_FORM_block1: | |
56eb65bd SP |
18811 | fprintf_unfiltered (f, "block: size %s", |
18812 | pulongest (DW_BLOCK (&die->attrs[i])->size)); | |
c906108c | 18813 | break; |
2dc7f7b3 | 18814 | case DW_FORM_exprloc: |
56eb65bd SP |
18815 | fprintf_unfiltered (f, "expression: size %s", |
18816 | pulongest (DW_BLOCK (&die->attrs[i])->size)); | |
2dc7f7b3 | 18817 | break; |
4568ecf9 DE |
18818 | case DW_FORM_ref_addr: |
18819 | fprintf_unfiltered (f, "ref address: "); | |
18820 | fputs_filtered (hex_string (DW_UNSND (&die->attrs[i])), f); | |
18821 | break; | |
36586728 TT |
18822 | case DW_FORM_GNU_ref_alt: |
18823 | fprintf_unfiltered (f, "alt ref address: "); | |
18824 | fputs_filtered (hex_string (DW_UNSND (&die->attrs[i])), f); | |
18825 | break; | |
10b3939b DJ |
18826 | case DW_FORM_ref1: |
18827 | case DW_FORM_ref2: | |
18828 | case DW_FORM_ref4: | |
4568ecf9 DE |
18829 | case DW_FORM_ref8: |
18830 | case DW_FORM_ref_udata: | |
d97bc12b | 18831 | fprintf_unfiltered (f, "constant ref: 0x%lx (adjusted)", |
4568ecf9 | 18832 | (long) (DW_UNSND (&die->attrs[i]))); |
10b3939b | 18833 | break; |
c906108c SS |
18834 | case DW_FORM_data1: |
18835 | case DW_FORM_data2: | |
18836 | case DW_FORM_data4: | |
ce5d95e1 | 18837 | case DW_FORM_data8: |
c906108c SS |
18838 | case DW_FORM_udata: |
18839 | case DW_FORM_sdata: | |
43bbcdc2 PH |
18840 | fprintf_unfiltered (f, "constant: %s", |
18841 | pulongest (DW_UNSND (&die->attrs[i]))); | |
c906108c | 18842 | break; |
2dc7f7b3 TT |
18843 | case DW_FORM_sec_offset: |
18844 | fprintf_unfiltered (f, "section offset: %s", | |
18845 | pulongest (DW_UNSND (&die->attrs[i]))); | |
18846 | break; | |
55f1336d | 18847 | case DW_FORM_ref_sig8: |
ac9ec31b DE |
18848 | fprintf_unfiltered (f, "signature: %s", |
18849 | hex_string (DW_SIGNATURE (&die->attrs[i]))); | |
348e048f | 18850 | break; |
c906108c | 18851 | case DW_FORM_string: |
4bdf3d34 | 18852 | case DW_FORM_strp: |
3019eac3 | 18853 | case DW_FORM_GNU_str_index: |
36586728 | 18854 | case DW_FORM_GNU_strp_alt: |
8285870a | 18855 | fprintf_unfiltered (f, "string: \"%s\" (%s canonicalized)", |
c906108c | 18856 | DW_STRING (&die->attrs[i]) |
8285870a JK |
18857 | ? DW_STRING (&die->attrs[i]) : "", |
18858 | DW_STRING_IS_CANONICAL (&die->attrs[i]) ? "is" : "not"); | |
c906108c SS |
18859 | break; |
18860 | case DW_FORM_flag: | |
18861 | if (DW_UNSND (&die->attrs[i])) | |
d97bc12b | 18862 | fprintf_unfiltered (f, "flag: TRUE"); |
c906108c | 18863 | else |
d97bc12b | 18864 | fprintf_unfiltered (f, "flag: FALSE"); |
c906108c | 18865 | break; |
2dc7f7b3 TT |
18866 | case DW_FORM_flag_present: |
18867 | fprintf_unfiltered (f, "flag: TRUE"); | |
18868 | break; | |
a8329558 | 18869 | case DW_FORM_indirect: |
0963b4bd MS |
18870 | /* The reader will have reduced the indirect form to |
18871 | the "base form" so this form should not occur. */ | |
3e43a32a MS |
18872 | fprintf_unfiltered (f, |
18873 | "unexpected attribute form: DW_FORM_indirect"); | |
a8329558 | 18874 | break; |
c906108c | 18875 | default: |
d97bc12b | 18876 | fprintf_unfiltered (f, "unsupported attribute form: %d.", |
c5aa993b | 18877 | die->attrs[i].form); |
d97bc12b | 18878 | break; |
c906108c | 18879 | } |
d97bc12b | 18880 | fprintf_unfiltered (f, "\n"); |
c906108c SS |
18881 | } |
18882 | } | |
18883 | ||
f9aca02d | 18884 | static void |
d97bc12b | 18885 | dump_die_for_error (struct die_info *die) |
c906108c | 18886 | { |
d97bc12b DE |
18887 | dump_die_shallow (gdb_stderr, 0, die); |
18888 | } | |
18889 | ||
18890 | static void | |
18891 | dump_die_1 (struct ui_file *f, int level, int max_level, struct die_info *die) | |
18892 | { | |
18893 | int indent = level * 4; | |
18894 | ||
18895 | gdb_assert (die != NULL); | |
18896 | ||
18897 | if (level >= max_level) | |
18898 | return; | |
18899 | ||
18900 | dump_die_shallow (f, indent, die); | |
18901 | ||
18902 | if (die->child != NULL) | |
c906108c | 18903 | { |
d97bc12b DE |
18904 | print_spaces (indent, f); |
18905 | fprintf_unfiltered (f, " Children:"); | |
18906 | if (level + 1 < max_level) | |
18907 | { | |
18908 | fprintf_unfiltered (f, "\n"); | |
18909 | dump_die_1 (f, level + 1, max_level, die->child); | |
18910 | } | |
18911 | else | |
18912 | { | |
3e43a32a MS |
18913 | fprintf_unfiltered (f, |
18914 | " [not printed, max nesting level reached]\n"); | |
d97bc12b DE |
18915 | } |
18916 | } | |
18917 | ||
18918 | if (die->sibling != NULL && level > 0) | |
18919 | { | |
18920 | dump_die_1 (f, level, max_level, die->sibling); | |
c906108c SS |
18921 | } |
18922 | } | |
18923 | ||
d97bc12b DE |
18924 | /* This is called from the pdie macro in gdbinit.in. |
18925 | It's not static so gcc will keep a copy callable from gdb. */ | |
18926 | ||
18927 | void | |
18928 | dump_die (struct die_info *die, int max_level) | |
18929 | { | |
18930 | dump_die_1 (gdb_stdlog, 0, max_level, die); | |
18931 | } | |
18932 | ||
f9aca02d | 18933 | static void |
51545339 | 18934 | store_in_ref_table (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 18935 | { |
51545339 | 18936 | void **slot; |
c906108c | 18937 | |
b64f50a1 JK |
18938 | slot = htab_find_slot_with_hash (cu->die_hash, die, die->offset.sect_off, |
18939 | INSERT); | |
51545339 DJ |
18940 | |
18941 | *slot = die; | |
c906108c SS |
18942 | } |
18943 | ||
b64f50a1 JK |
18944 | /* Return DIE offset of ATTR. Return 0 with complaint if ATTR is not of the |
18945 | required kind. */ | |
18946 | ||
18947 | static sect_offset | |
ff39bb5e | 18948 | dwarf2_get_ref_die_offset (const struct attribute *attr) |
93311388 | 18949 | { |
4568ecf9 | 18950 | sect_offset retval = { DW_UNSND (attr) }; |
b64f50a1 | 18951 | |
7771576e | 18952 | if (attr_form_is_ref (attr)) |
b64f50a1 | 18953 | return retval; |
93311388 | 18954 | |
b64f50a1 | 18955 | retval.sect_off = 0; |
93311388 DE |
18956 | complaint (&symfile_complaints, |
18957 | _("unsupported die ref attribute form: '%s'"), | |
18958 | dwarf_form_name (attr->form)); | |
b64f50a1 | 18959 | return retval; |
c906108c SS |
18960 | } |
18961 | ||
43bbcdc2 PH |
18962 | /* Return the constant value held by ATTR. Return DEFAULT_VALUE if |
18963 | * the value held by the attribute is not constant. */ | |
a02abb62 | 18964 | |
43bbcdc2 | 18965 | static LONGEST |
ff39bb5e | 18966 | dwarf2_get_attr_constant_value (const struct attribute *attr, int default_value) |
a02abb62 JB |
18967 | { |
18968 | if (attr->form == DW_FORM_sdata) | |
18969 | return DW_SND (attr); | |
18970 | else if (attr->form == DW_FORM_udata | |
18971 | || attr->form == DW_FORM_data1 | |
18972 | || attr->form == DW_FORM_data2 | |
18973 | || attr->form == DW_FORM_data4 | |
18974 | || attr->form == DW_FORM_data8) | |
18975 | return DW_UNSND (attr); | |
18976 | else | |
18977 | { | |
3e43a32a MS |
18978 | complaint (&symfile_complaints, |
18979 | _("Attribute value is not a constant (%s)"), | |
a02abb62 JB |
18980 | dwarf_form_name (attr->form)); |
18981 | return default_value; | |
18982 | } | |
18983 | } | |
18984 | ||
348e048f DE |
18985 | /* Follow reference or signature attribute ATTR of SRC_DIE. |
18986 | On entry *REF_CU is the CU of SRC_DIE. | |
18987 | On exit *REF_CU is the CU of the result. */ | |
18988 | ||
18989 | static struct die_info * | |
ff39bb5e | 18990 | follow_die_ref_or_sig (struct die_info *src_die, const struct attribute *attr, |
348e048f DE |
18991 | struct dwarf2_cu **ref_cu) |
18992 | { | |
18993 | struct die_info *die; | |
18994 | ||
7771576e | 18995 | if (attr_form_is_ref (attr)) |
348e048f | 18996 | die = follow_die_ref (src_die, attr, ref_cu); |
55f1336d | 18997 | else if (attr->form == DW_FORM_ref_sig8) |
348e048f DE |
18998 | die = follow_die_sig (src_die, attr, ref_cu); |
18999 | else | |
19000 | { | |
19001 | dump_die_for_error (src_die); | |
19002 | error (_("Dwarf Error: Expected reference attribute [in module %s]"), | |
4262abfb | 19003 | objfile_name ((*ref_cu)->objfile)); |
348e048f DE |
19004 | } |
19005 | ||
19006 | return die; | |
03dd20cc DJ |
19007 | } |
19008 | ||
5c631832 | 19009 | /* Follow reference OFFSET. |
673bfd45 DE |
19010 | On entry *REF_CU is the CU of the source die referencing OFFSET. |
19011 | On exit *REF_CU is the CU of the result. | |
19012 | Returns NULL if OFFSET is invalid. */ | |
f504f079 | 19013 | |
f9aca02d | 19014 | static struct die_info * |
36586728 TT |
19015 | follow_die_offset (sect_offset offset, int offset_in_dwz, |
19016 | struct dwarf2_cu **ref_cu) | |
c906108c | 19017 | { |
10b3939b | 19018 | struct die_info temp_die; |
f2f0e013 | 19019 | struct dwarf2_cu *target_cu, *cu = *ref_cu; |
10b3939b | 19020 | |
348e048f DE |
19021 | gdb_assert (cu->per_cu != NULL); |
19022 | ||
98bfdba5 PA |
19023 | target_cu = cu; |
19024 | ||
3019eac3 | 19025 | if (cu->per_cu->is_debug_types) |
348e048f DE |
19026 | { |
19027 | /* .debug_types CUs cannot reference anything outside their CU. | |
19028 | If they need to, they have to reference a signatured type via | |
55f1336d | 19029 | DW_FORM_ref_sig8. */ |
348e048f | 19030 | if (! offset_in_cu_p (&cu->header, offset)) |
5c631832 | 19031 | return NULL; |
348e048f | 19032 | } |
36586728 TT |
19033 | else if (offset_in_dwz != cu->per_cu->is_dwz |
19034 | || ! offset_in_cu_p (&cu->header, offset)) | |
10b3939b DJ |
19035 | { |
19036 | struct dwarf2_per_cu_data *per_cu; | |
9a619af0 | 19037 | |
36586728 TT |
19038 | per_cu = dwarf2_find_containing_comp_unit (offset, offset_in_dwz, |
19039 | cu->objfile); | |
03dd20cc DJ |
19040 | |
19041 | /* If necessary, add it to the queue and load its DIEs. */ | |
95554aad TT |
19042 | if (maybe_queue_comp_unit (cu, per_cu, cu->language)) |
19043 | load_full_comp_unit (per_cu, cu->language); | |
03dd20cc | 19044 | |
10b3939b DJ |
19045 | target_cu = per_cu->cu; |
19046 | } | |
98bfdba5 PA |
19047 | else if (cu->dies == NULL) |
19048 | { | |
19049 | /* We're loading full DIEs during partial symbol reading. */ | |
19050 | gdb_assert (dwarf2_per_objfile->reading_partial_symbols); | |
95554aad | 19051 | load_full_comp_unit (cu->per_cu, language_minimal); |
98bfdba5 | 19052 | } |
c906108c | 19053 | |
f2f0e013 | 19054 | *ref_cu = target_cu; |
51545339 | 19055 | temp_die.offset = offset; |
b64f50a1 | 19056 | return htab_find_with_hash (target_cu->die_hash, &temp_die, offset.sect_off); |
5c631832 | 19057 | } |
10b3939b | 19058 | |
5c631832 JK |
19059 | /* Follow reference attribute ATTR of SRC_DIE. |
19060 | On entry *REF_CU is the CU of SRC_DIE. | |
19061 | On exit *REF_CU is the CU of the result. */ | |
19062 | ||
19063 | static struct die_info * | |
ff39bb5e | 19064 | follow_die_ref (struct die_info *src_die, const struct attribute *attr, |
5c631832 JK |
19065 | struct dwarf2_cu **ref_cu) |
19066 | { | |
b64f50a1 | 19067 | sect_offset offset = dwarf2_get_ref_die_offset (attr); |
5c631832 JK |
19068 | struct dwarf2_cu *cu = *ref_cu; |
19069 | struct die_info *die; | |
19070 | ||
36586728 TT |
19071 | die = follow_die_offset (offset, |
19072 | (attr->form == DW_FORM_GNU_ref_alt | |
19073 | || cu->per_cu->is_dwz), | |
19074 | ref_cu); | |
5c631832 JK |
19075 | if (!die) |
19076 | error (_("Dwarf Error: Cannot find DIE at 0x%x referenced from DIE " | |
19077 | "at 0x%x [in module %s]"), | |
4262abfb JK |
19078 | offset.sect_off, src_die->offset.sect_off, |
19079 | objfile_name (cu->objfile)); | |
348e048f | 19080 | |
5c631832 JK |
19081 | return die; |
19082 | } | |
19083 | ||
d83e736b JK |
19084 | /* Return DWARF block referenced by DW_AT_location of DIE at OFFSET at PER_CU. |
19085 | Returned value is intended for DW_OP_call*. Returned | |
19086 | dwarf2_locexpr_baton->data has lifetime of PER_CU->OBJFILE. */ | |
5c631832 JK |
19087 | |
19088 | struct dwarf2_locexpr_baton | |
8b9737bf TT |
19089 | dwarf2_fetch_die_loc_sect_off (sect_offset offset, |
19090 | struct dwarf2_per_cu_data *per_cu, | |
19091 | CORE_ADDR (*get_frame_pc) (void *baton), | |
19092 | void *baton) | |
5c631832 | 19093 | { |
918dd910 | 19094 | struct dwarf2_cu *cu; |
5c631832 JK |
19095 | struct die_info *die; |
19096 | struct attribute *attr; | |
19097 | struct dwarf2_locexpr_baton retval; | |
19098 | ||
8cf6f0b1 TT |
19099 | dw2_setup (per_cu->objfile); |
19100 | ||
918dd910 JK |
19101 | if (per_cu->cu == NULL) |
19102 | load_cu (per_cu); | |
19103 | cu = per_cu->cu; | |
19104 | ||
36586728 | 19105 | die = follow_die_offset (offset, per_cu->is_dwz, &cu); |
5c631832 JK |
19106 | if (!die) |
19107 | error (_("Dwarf Error: Cannot find DIE at 0x%x referenced in module %s"), | |
4262abfb | 19108 | offset.sect_off, objfile_name (per_cu->objfile)); |
5c631832 JK |
19109 | |
19110 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
19111 | if (!attr) | |
19112 | { | |
e103e986 JK |
19113 | /* DWARF: "If there is no such attribute, then there is no effect.". |
19114 | DATA is ignored if SIZE is 0. */ | |
5c631832 | 19115 | |
e103e986 | 19116 | retval.data = NULL; |
5c631832 JK |
19117 | retval.size = 0; |
19118 | } | |
8cf6f0b1 TT |
19119 | else if (attr_form_is_section_offset (attr)) |
19120 | { | |
19121 | struct dwarf2_loclist_baton loclist_baton; | |
19122 | CORE_ADDR pc = (*get_frame_pc) (baton); | |
19123 | size_t size; | |
19124 | ||
19125 | fill_in_loclist_baton (cu, &loclist_baton, attr); | |
19126 | ||
19127 | retval.data = dwarf2_find_location_expression (&loclist_baton, | |
19128 | &size, pc); | |
19129 | retval.size = size; | |
19130 | } | |
5c631832 JK |
19131 | else |
19132 | { | |
19133 | if (!attr_form_is_block (attr)) | |
19134 | error (_("Dwarf Error: DIE at 0x%x referenced in module %s " | |
19135 | "is neither DW_FORM_block* nor DW_FORM_exprloc"), | |
4262abfb | 19136 | offset.sect_off, objfile_name (per_cu->objfile)); |
5c631832 JK |
19137 | |
19138 | retval.data = DW_BLOCK (attr)->data; | |
19139 | retval.size = DW_BLOCK (attr)->size; | |
19140 | } | |
19141 | retval.per_cu = cu->per_cu; | |
918dd910 | 19142 | |
918dd910 JK |
19143 | age_cached_comp_units (); |
19144 | ||
5c631832 | 19145 | return retval; |
348e048f DE |
19146 | } |
19147 | ||
8b9737bf TT |
19148 | /* Like dwarf2_fetch_die_loc_sect_off, but take a CU |
19149 | offset. */ | |
19150 | ||
19151 | struct dwarf2_locexpr_baton | |
19152 | dwarf2_fetch_die_loc_cu_off (cu_offset offset_in_cu, | |
19153 | struct dwarf2_per_cu_data *per_cu, | |
19154 | CORE_ADDR (*get_frame_pc) (void *baton), | |
19155 | void *baton) | |
19156 | { | |
19157 | sect_offset offset = { per_cu->offset.sect_off + offset_in_cu.cu_off }; | |
19158 | ||
19159 | return dwarf2_fetch_die_loc_sect_off (offset, per_cu, get_frame_pc, baton); | |
19160 | } | |
19161 | ||
b6807d98 TT |
19162 | /* Write a constant of a given type as target-ordered bytes into |
19163 | OBSTACK. */ | |
19164 | ||
19165 | static const gdb_byte * | |
19166 | write_constant_as_bytes (struct obstack *obstack, | |
19167 | enum bfd_endian byte_order, | |
19168 | struct type *type, | |
19169 | ULONGEST value, | |
19170 | LONGEST *len) | |
19171 | { | |
19172 | gdb_byte *result; | |
19173 | ||
19174 | *len = TYPE_LENGTH (type); | |
19175 | result = obstack_alloc (obstack, *len); | |
19176 | store_unsigned_integer (result, *len, byte_order, value); | |
19177 | ||
19178 | return result; | |
19179 | } | |
19180 | ||
19181 | /* If the DIE at OFFSET in PER_CU has a DW_AT_const_value, return a | |
19182 | pointer to the constant bytes and set LEN to the length of the | |
19183 | data. If memory is needed, allocate it on OBSTACK. If the DIE | |
19184 | does not have a DW_AT_const_value, return NULL. */ | |
19185 | ||
19186 | const gdb_byte * | |
19187 | dwarf2_fetch_constant_bytes (sect_offset offset, | |
19188 | struct dwarf2_per_cu_data *per_cu, | |
19189 | struct obstack *obstack, | |
19190 | LONGEST *len) | |
19191 | { | |
19192 | struct dwarf2_cu *cu; | |
19193 | struct die_info *die; | |
19194 | struct attribute *attr; | |
19195 | const gdb_byte *result = NULL; | |
19196 | struct type *type; | |
19197 | LONGEST value; | |
19198 | enum bfd_endian byte_order; | |
19199 | ||
19200 | dw2_setup (per_cu->objfile); | |
19201 | ||
19202 | if (per_cu->cu == NULL) | |
19203 | load_cu (per_cu); | |
19204 | cu = per_cu->cu; | |
19205 | ||
19206 | die = follow_die_offset (offset, per_cu->is_dwz, &cu); | |
19207 | if (!die) | |
19208 | error (_("Dwarf Error: Cannot find DIE at 0x%x referenced in module %s"), | |
4262abfb | 19209 | offset.sect_off, objfile_name (per_cu->objfile)); |
b6807d98 TT |
19210 | |
19211 | ||
19212 | attr = dwarf2_attr (die, DW_AT_const_value, cu); | |
19213 | if (attr == NULL) | |
19214 | return NULL; | |
19215 | ||
19216 | byte_order = (bfd_big_endian (per_cu->objfile->obfd) | |
19217 | ? BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); | |
19218 | ||
19219 | switch (attr->form) | |
19220 | { | |
19221 | case DW_FORM_addr: | |
19222 | case DW_FORM_GNU_addr_index: | |
19223 | { | |
19224 | gdb_byte *tem; | |
19225 | ||
19226 | *len = cu->header.addr_size; | |
19227 | tem = obstack_alloc (obstack, *len); | |
19228 | store_unsigned_integer (tem, *len, byte_order, DW_ADDR (attr)); | |
19229 | result = tem; | |
19230 | } | |
19231 | break; | |
19232 | case DW_FORM_string: | |
19233 | case DW_FORM_strp: | |
19234 | case DW_FORM_GNU_str_index: | |
19235 | case DW_FORM_GNU_strp_alt: | |
19236 | /* DW_STRING is already allocated on the objfile obstack, point | |
19237 | directly to it. */ | |
19238 | result = (const gdb_byte *) DW_STRING (attr); | |
19239 | *len = strlen (DW_STRING (attr)); | |
19240 | break; | |
19241 | case DW_FORM_block1: | |
19242 | case DW_FORM_block2: | |
19243 | case DW_FORM_block4: | |
19244 | case DW_FORM_block: | |
19245 | case DW_FORM_exprloc: | |
19246 | result = DW_BLOCK (attr)->data; | |
19247 | *len = DW_BLOCK (attr)->size; | |
19248 | break; | |
19249 | ||
19250 | /* The DW_AT_const_value attributes are supposed to carry the | |
19251 | symbol's value "represented as it would be on the target | |
19252 | architecture." By the time we get here, it's already been | |
19253 | converted to host endianness, so we just need to sign- or | |
19254 | zero-extend it as appropriate. */ | |
19255 | case DW_FORM_data1: | |
19256 | type = die_type (die, cu); | |
19257 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 8); | |
19258 | if (result == NULL) | |
19259 | result = write_constant_as_bytes (obstack, byte_order, | |
19260 | type, value, len); | |
19261 | break; | |
19262 | case DW_FORM_data2: | |
19263 | type = die_type (die, cu); | |
19264 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 16); | |
19265 | if (result == NULL) | |
19266 | result = write_constant_as_bytes (obstack, byte_order, | |
19267 | type, value, len); | |
19268 | break; | |
19269 | case DW_FORM_data4: | |
19270 | type = die_type (die, cu); | |
19271 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 32); | |
19272 | if (result == NULL) | |
19273 | result = write_constant_as_bytes (obstack, byte_order, | |
19274 | type, value, len); | |
19275 | break; | |
19276 | case DW_FORM_data8: | |
19277 | type = die_type (die, cu); | |
19278 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 64); | |
19279 | if (result == NULL) | |
19280 | result = write_constant_as_bytes (obstack, byte_order, | |
19281 | type, value, len); | |
19282 | break; | |
19283 | ||
19284 | case DW_FORM_sdata: | |
19285 | type = die_type (die, cu); | |
19286 | result = write_constant_as_bytes (obstack, byte_order, | |
19287 | type, DW_SND (attr), len); | |
19288 | break; | |
19289 | ||
19290 | case DW_FORM_udata: | |
19291 | type = die_type (die, cu); | |
19292 | result = write_constant_as_bytes (obstack, byte_order, | |
19293 | type, DW_UNSND (attr), len); | |
19294 | break; | |
19295 | ||
19296 | default: | |
19297 | complaint (&symfile_complaints, | |
19298 | _("unsupported const value attribute form: '%s'"), | |
19299 | dwarf_form_name (attr->form)); | |
19300 | break; | |
19301 | } | |
19302 | ||
19303 | return result; | |
19304 | } | |
19305 | ||
8a9b8146 TT |
19306 | /* Return the type of the DIE at DIE_OFFSET in the CU named by |
19307 | PER_CU. */ | |
19308 | ||
19309 | struct type * | |
b64f50a1 | 19310 | dwarf2_get_die_type (cu_offset die_offset, |
8a9b8146 TT |
19311 | struct dwarf2_per_cu_data *per_cu) |
19312 | { | |
b64f50a1 JK |
19313 | sect_offset die_offset_sect; |
19314 | ||
8a9b8146 | 19315 | dw2_setup (per_cu->objfile); |
b64f50a1 JK |
19316 | |
19317 | die_offset_sect.sect_off = per_cu->offset.sect_off + die_offset.cu_off; | |
19318 | return get_die_type_at_offset (die_offset_sect, per_cu); | |
8a9b8146 TT |
19319 | } |
19320 | ||
ac9ec31b | 19321 | /* Follow type unit SIG_TYPE referenced by SRC_DIE. |
348e048f | 19322 | On entry *REF_CU is the CU of SRC_DIE. |
ac9ec31b DE |
19323 | On exit *REF_CU is the CU of the result. |
19324 | Returns NULL if the referenced DIE isn't found. */ | |
348e048f DE |
19325 | |
19326 | static struct die_info * | |
ac9ec31b DE |
19327 | follow_die_sig_1 (struct die_info *src_die, struct signatured_type *sig_type, |
19328 | struct dwarf2_cu **ref_cu) | |
348e048f DE |
19329 | { |
19330 | struct objfile *objfile = (*ref_cu)->objfile; | |
19331 | struct die_info temp_die; | |
348e048f DE |
19332 | struct dwarf2_cu *sig_cu; |
19333 | struct die_info *die; | |
19334 | ||
ac9ec31b DE |
19335 | /* While it might be nice to assert sig_type->type == NULL here, |
19336 | we can get here for DW_AT_imported_declaration where we need | |
19337 | the DIE not the type. */ | |
348e048f DE |
19338 | |
19339 | /* If necessary, add it to the queue and load its DIEs. */ | |
19340 | ||
95554aad | 19341 | if (maybe_queue_comp_unit (*ref_cu, &sig_type->per_cu, language_minimal)) |
a0f42c21 | 19342 | read_signatured_type (sig_type); |
348e048f | 19343 | |
348e048f | 19344 | sig_cu = sig_type->per_cu.cu; |
69d751e3 | 19345 | gdb_assert (sig_cu != NULL); |
3019eac3 DE |
19346 | gdb_assert (sig_type->type_offset_in_section.sect_off != 0); |
19347 | temp_die.offset = sig_type->type_offset_in_section; | |
b64f50a1 JK |
19348 | die = htab_find_with_hash (sig_cu->die_hash, &temp_die, |
19349 | temp_die.offset.sect_off); | |
348e048f DE |
19350 | if (die) |
19351 | { | |
796a7ff8 DE |
19352 | /* For .gdb_index version 7 keep track of included TUs. |
19353 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. */ | |
19354 | if (dwarf2_per_objfile->index_table != NULL | |
19355 | && dwarf2_per_objfile->index_table->version <= 7) | |
19356 | { | |
19357 | VEC_safe_push (dwarf2_per_cu_ptr, | |
19358 | (*ref_cu)->per_cu->imported_symtabs, | |
19359 | sig_cu->per_cu); | |
19360 | } | |
19361 | ||
348e048f DE |
19362 | *ref_cu = sig_cu; |
19363 | return die; | |
19364 | } | |
19365 | ||
ac9ec31b DE |
19366 | return NULL; |
19367 | } | |
19368 | ||
19369 | /* Follow signatured type referenced by ATTR in SRC_DIE. | |
19370 | On entry *REF_CU is the CU of SRC_DIE. | |
19371 | On exit *REF_CU is the CU of the result. | |
19372 | The result is the DIE of the type. | |
19373 | If the referenced type cannot be found an error is thrown. */ | |
19374 | ||
19375 | static struct die_info * | |
ff39bb5e | 19376 | follow_die_sig (struct die_info *src_die, const struct attribute *attr, |
ac9ec31b DE |
19377 | struct dwarf2_cu **ref_cu) |
19378 | { | |
19379 | ULONGEST signature = DW_SIGNATURE (attr); | |
19380 | struct signatured_type *sig_type; | |
19381 | struct die_info *die; | |
19382 | ||
19383 | gdb_assert (attr->form == DW_FORM_ref_sig8); | |
19384 | ||
a2ce51a0 | 19385 | sig_type = lookup_signatured_type (*ref_cu, signature); |
ac9ec31b DE |
19386 | /* sig_type will be NULL if the signatured type is missing from |
19387 | the debug info. */ | |
19388 | if (sig_type == NULL) | |
19389 | { | |
19390 | error (_("Dwarf Error: Cannot find signatured DIE %s referenced" | |
19391 | " from DIE at 0x%x [in module %s]"), | |
19392 | hex_string (signature), src_die->offset.sect_off, | |
4262abfb | 19393 | objfile_name ((*ref_cu)->objfile)); |
ac9ec31b DE |
19394 | } |
19395 | ||
19396 | die = follow_die_sig_1 (src_die, sig_type, ref_cu); | |
19397 | if (die == NULL) | |
19398 | { | |
19399 | dump_die_for_error (src_die); | |
19400 | error (_("Dwarf Error: Problem reading signatured DIE %s referenced" | |
19401 | " from DIE at 0x%x [in module %s]"), | |
19402 | hex_string (signature), src_die->offset.sect_off, | |
4262abfb | 19403 | objfile_name ((*ref_cu)->objfile)); |
ac9ec31b DE |
19404 | } |
19405 | ||
19406 | return die; | |
19407 | } | |
19408 | ||
19409 | /* Get the type specified by SIGNATURE referenced in DIE/CU, | |
19410 | reading in and processing the type unit if necessary. */ | |
19411 | ||
19412 | static struct type * | |
19413 | get_signatured_type (struct die_info *die, ULONGEST signature, | |
19414 | struct dwarf2_cu *cu) | |
19415 | { | |
19416 | struct signatured_type *sig_type; | |
19417 | struct dwarf2_cu *type_cu; | |
19418 | struct die_info *type_die; | |
19419 | struct type *type; | |
19420 | ||
a2ce51a0 | 19421 | sig_type = lookup_signatured_type (cu, signature); |
ac9ec31b DE |
19422 | /* sig_type will be NULL if the signatured type is missing from |
19423 | the debug info. */ | |
19424 | if (sig_type == NULL) | |
19425 | { | |
19426 | complaint (&symfile_complaints, | |
19427 | _("Dwarf Error: Cannot find signatured DIE %s referenced" | |
19428 | " from DIE at 0x%x [in module %s]"), | |
19429 | hex_string (signature), die->offset.sect_off, | |
4262abfb | 19430 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
19431 | return build_error_marker_type (cu, die); |
19432 | } | |
19433 | ||
19434 | /* If we already know the type we're done. */ | |
19435 | if (sig_type->type != NULL) | |
19436 | return sig_type->type; | |
19437 | ||
19438 | type_cu = cu; | |
19439 | type_die = follow_die_sig_1 (die, sig_type, &type_cu); | |
19440 | if (type_die != NULL) | |
19441 | { | |
19442 | /* N.B. We need to call get_die_type to ensure only one type for this DIE | |
19443 | is created. This is important, for example, because for c++ classes | |
19444 | we need TYPE_NAME set which is only done by new_symbol. Blech. */ | |
19445 | type = read_type_die (type_die, type_cu); | |
19446 | if (type == NULL) | |
19447 | { | |
19448 | complaint (&symfile_complaints, | |
19449 | _("Dwarf Error: Cannot build signatured type %s" | |
19450 | " referenced from DIE at 0x%x [in module %s]"), | |
19451 | hex_string (signature), die->offset.sect_off, | |
4262abfb | 19452 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
19453 | type = build_error_marker_type (cu, die); |
19454 | } | |
19455 | } | |
19456 | else | |
19457 | { | |
19458 | complaint (&symfile_complaints, | |
19459 | _("Dwarf Error: Problem reading signatured DIE %s referenced" | |
19460 | " from DIE at 0x%x [in module %s]"), | |
19461 | hex_string (signature), die->offset.sect_off, | |
4262abfb | 19462 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
19463 | type = build_error_marker_type (cu, die); |
19464 | } | |
19465 | sig_type->type = type; | |
19466 | ||
19467 | return type; | |
19468 | } | |
19469 | ||
19470 | /* Get the type specified by the DW_AT_signature ATTR in DIE/CU, | |
19471 | reading in and processing the type unit if necessary. */ | |
19472 | ||
19473 | static struct type * | |
ff39bb5e | 19474 | get_DW_AT_signature_type (struct die_info *die, const struct attribute *attr, |
b385a60d | 19475 | struct dwarf2_cu *cu) /* ARI: editCase function */ |
ac9ec31b DE |
19476 | { |
19477 | /* Yes, DW_AT_signature can use a non-ref_sig8 reference. */ | |
7771576e | 19478 | if (attr_form_is_ref (attr)) |
ac9ec31b DE |
19479 | { |
19480 | struct dwarf2_cu *type_cu = cu; | |
19481 | struct die_info *type_die = follow_die_ref (die, attr, &type_cu); | |
19482 | ||
19483 | return read_type_die (type_die, type_cu); | |
19484 | } | |
19485 | else if (attr->form == DW_FORM_ref_sig8) | |
19486 | { | |
19487 | return get_signatured_type (die, DW_SIGNATURE (attr), cu); | |
19488 | } | |
19489 | else | |
19490 | { | |
19491 | complaint (&symfile_complaints, | |
19492 | _("Dwarf Error: DW_AT_signature has bad form %s in DIE" | |
19493 | " at 0x%x [in module %s]"), | |
19494 | dwarf_form_name (attr->form), die->offset.sect_off, | |
4262abfb | 19495 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
19496 | return build_error_marker_type (cu, die); |
19497 | } | |
348e048f DE |
19498 | } |
19499 | ||
e5fe5e75 | 19500 | /* Load the DIEs associated with type unit PER_CU into memory. */ |
348e048f DE |
19501 | |
19502 | static void | |
e5fe5e75 | 19503 | load_full_type_unit (struct dwarf2_per_cu_data *per_cu) |
348e048f | 19504 | { |
52dc124a | 19505 | struct signatured_type *sig_type; |
348e048f | 19506 | |
f4dc4d17 DE |
19507 | /* Caller is responsible for ensuring type_unit_groups don't get here. */ |
19508 | gdb_assert (! IS_TYPE_UNIT_GROUP (per_cu)); | |
19509 | ||
6721b2ec DE |
19510 | /* We have the per_cu, but we need the signatured_type. |
19511 | Fortunately this is an easy translation. */ | |
19512 | gdb_assert (per_cu->is_debug_types); | |
19513 | sig_type = (struct signatured_type *) per_cu; | |
348e048f | 19514 | |
6721b2ec | 19515 | gdb_assert (per_cu->cu == NULL); |
348e048f | 19516 | |
52dc124a | 19517 | read_signatured_type (sig_type); |
348e048f | 19518 | |
6721b2ec | 19519 | gdb_assert (per_cu->cu != NULL); |
348e048f DE |
19520 | } |
19521 | ||
dee91e82 DE |
19522 | /* die_reader_func for read_signatured_type. |
19523 | This is identical to load_full_comp_unit_reader, | |
19524 | but is kept separate for now. */ | |
348e048f DE |
19525 | |
19526 | static void | |
dee91e82 | 19527 | read_signatured_type_reader (const struct die_reader_specs *reader, |
d521ce57 | 19528 | const gdb_byte *info_ptr, |
dee91e82 DE |
19529 | struct die_info *comp_unit_die, |
19530 | int has_children, | |
19531 | void *data) | |
348e048f | 19532 | { |
dee91e82 | 19533 | struct dwarf2_cu *cu = reader->cu; |
348e048f | 19534 | |
dee91e82 DE |
19535 | gdb_assert (cu->die_hash == NULL); |
19536 | cu->die_hash = | |
19537 | htab_create_alloc_ex (cu->header.length / 12, | |
19538 | die_hash, | |
19539 | die_eq, | |
19540 | NULL, | |
19541 | &cu->comp_unit_obstack, | |
19542 | hashtab_obstack_allocate, | |
19543 | dummy_obstack_deallocate); | |
348e048f | 19544 | |
dee91e82 DE |
19545 | if (has_children) |
19546 | comp_unit_die->child = read_die_and_siblings (reader, info_ptr, | |
19547 | &info_ptr, comp_unit_die); | |
19548 | cu->dies = comp_unit_die; | |
19549 | /* comp_unit_die is not stored in die_hash, no need. */ | |
348e048f DE |
19550 | |
19551 | /* We try not to read any attributes in this function, because not | |
9cdd5dbd | 19552 | all CUs needed for references have been loaded yet, and symbol |
348e048f | 19553 | table processing isn't initialized. But we have to set the CU language, |
dee91e82 DE |
19554 | or we won't be able to build types correctly. |
19555 | Similarly, if we do not read the producer, we can not apply | |
19556 | producer-specific interpretation. */ | |
95554aad | 19557 | prepare_one_comp_unit (cu, cu->dies, language_minimal); |
dee91e82 | 19558 | } |
348e048f | 19559 | |
3019eac3 DE |
19560 | /* Read in a signatured type and build its CU and DIEs. |
19561 | If the type is a stub for the real type in a DWO file, | |
19562 | read in the real type from the DWO file as well. */ | |
dee91e82 DE |
19563 | |
19564 | static void | |
19565 | read_signatured_type (struct signatured_type *sig_type) | |
19566 | { | |
19567 | struct dwarf2_per_cu_data *per_cu = &sig_type->per_cu; | |
348e048f | 19568 | |
3019eac3 | 19569 | gdb_assert (per_cu->is_debug_types); |
dee91e82 | 19570 | gdb_assert (per_cu->cu == NULL); |
348e048f | 19571 | |
f4dc4d17 DE |
19572 | init_cutu_and_read_dies (per_cu, NULL, 0, 1, |
19573 | read_signatured_type_reader, NULL); | |
7ee85ab1 | 19574 | sig_type->per_cu.tu_read = 1; |
c906108c SS |
19575 | } |
19576 | ||
c906108c SS |
19577 | /* Decode simple location descriptions. |
19578 | Given a pointer to a dwarf block that defines a location, compute | |
19579 | the location and return the value. | |
19580 | ||
4cecd739 DJ |
19581 | NOTE drow/2003-11-18: This function is called in two situations |
19582 | now: for the address of static or global variables (partial symbols | |
19583 | only) and for offsets into structures which are expected to be | |
19584 | (more or less) constant. The partial symbol case should go away, | |
19585 | and only the constant case should remain. That will let this | |
19586 | function complain more accurately. A few special modes are allowed | |
19587 | without complaint for global variables (for instance, global | |
19588 | register values and thread-local values). | |
c906108c SS |
19589 | |
19590 | A location description containing no operations indicates that the | |
4cecd739 | 19591 | object is optimized out. The return value is 0 for that case. |
6b992462 DJ |
19592 | FIXME drow/2003-11-16: No callers check for this case any more; soon all |
19593 | callers will only want a very basic result and this can become a | |
21ae7a4d JK |
19594 | complaint. |
19595 | ||
19596 | Note that stack[0] is unused except as a default error return. */ | |
c906108c SS |
19597 | |
19598 | static CORE_ADDR | |
e7c27a73 | 19599 | decode_locdesc (struct dwarf_block *blk, struct dwarf2_cu *cu) |
c906108c | 19600 | { |
e7c27a73 | 19601 | struct objfile *objfile = cu->objfile; |
56eb65bd SP |
19602 | size_t i; |
19603 | size_t size = blk->size; | |
d521ce57 | 19604 | const gdb_byte *data = blk->data; |
21ae7a4d JK |
19605 | CORE_ADDR stack[64]; |
19606 | int stacki; | |
19607 | unsigned int bytes_read, unsnd; | |
19608 | gdb_byte op; | |
c906108c | 19609 | |
21ae7a4d JK |
19610 | i = 0; |
19611 | stacki = 0; | |
19612 | stack[stacki] = 0; | |
19613 | stack[++stacki] = 0; | |
19614 | ||
19615 | while (i < size) | |
19616 | { | |
19617 | op = data[i++]; | |
19618 | switch (op) | |
19619 | { | |
19620 | case DW_OP_lit0: | |
19621 | case DW_OP_lit1: | |
19622 | case DW_OP_lit2: | |
19623 | case DW_OP_lit3: | |
19624 | case DW_OP_lit4: | |
19625 | case DW_OP_lit5: | |
19626 | case DW_OP_lit6: | |
19627 | case DW_OP_lit7: | |
19628 | case DW_OP_lit8: | |
19629 | case DW_OP_lit9: | |
19630 | case DW_OP_lit10: | |
19631 | case DW_OP_lit11: | |
19632 | case DW_OP_lit12: | |
19633 | case DW_OP_lit13: | |
19634 | case DW_OP_lit14: | |
19635 | case DW_OP_lit15: | |
19636 | case DW_OP_lit16: | |
19637 | case DW_OP_lit17: | |
19638 | case DW_OP_lit18: | |
19639 | case DW_OP_lit19: | |
19640 | case DW_OP_lit20: | |
19641 | case DW_OP_lit21: | |
19642 | case DW_OP_lit22: | |
19643 | case DW_OP_lit23: | |
19644 | case DW_OP_lit24: | |
19645 | case DW_OP_lit25: | |
19646 | case DW_OP_lit26: | |
19647 | case DW_OP_lit27: | |
19648 | case DW_OP_lit28: | |
19649 | case DW_OP_lit29: | |
19650 | case DW_OP_lit30: | |
19651 | case DW_OP_lit31: | |
19652 | stack[++stacki] = op - DW_OP_lit0; | |
19653 | break; | |
f1bea926 | 19654 | |
21ae7a4d JK |
19655 | case DW_OP_reg0: |
19656 | case DW_OP_reg1: | |
19657 | case DW_OP_reg2: | |
19658 | case DW_OP_reg3: | |
19659 | case DW_OP_reg4: | |
19660 | case DW_OP_reg5: | |
19661 | case DW_OP_reg6: | |
19662 | case DW_OP_reg7: | |
19663 | case DW_OP_reg8: | |
19664 | case DW_OP_reg9: | |
19665 | case DW_OP_reg10: | |
19666 | case DW_OP_reg11: | |
19667 | case DW_OP_reg12: | |
19668 | case DW_OP_reg13: | |
19669 | case DW_OP_reg14: | |
19670 | case DW_OP_reg15: | |
19671 | case DW_OP_reg16: | |
19672 | case DW_OP_reg17: | |
19673 | case DW_OP_reg18: | |
19674 | case DW_OP_reg19: | |
19675 | case DW_OP_reg20: | |
19676 | case DW_OP_reg21: | |
19677 | case DW_OP_reg22: | |
19678 | case DW_OP_reg23: | |
19679 | case DW_OP_reg24: | |
19680 | case DW_OP_reg25: | |
19681 | case DW_OP_reg26: | |
19682 | case DW_OP_reg27: | |
19683 | case DW_OP_reg28: | |
19684 | case DW_OP_reg29: | |
19685 | case DW_OP_reg30: | |
19686 | case DW_OP_reg31: | |
19687 | stack[++stacki] = op - DW_OP_reg0; | |
19688 | if (i < size) | |
19689 | dwarf2_complex_location_expr_complaint (); | |
19690 | break; | |
c906108c | 19691 | |
21ae7a4d JK |
19692 | case DW_OP_regx: |
19693 | unsnd = read_unsigned_leb128 (NULL, (data + i), &bytes_read); | |
19694 | i += bytes_read; | |
19695 | stack[++stacki] = unsnd; | |
19696 | if (i < size) | |
19697 | dwarf2_complex_location_expr_complaint (); | |
19698 | break; | |
c906108c | 19699 | |
21ae7a4d JK |
19700 | case DW_OP_addr: |
19701 | stack[++stacki] = read_address (objfile->obfd, &data[i], | |
19702 | cu, &bytes_read); | |
19703 | i += bytes_read; | |
19704 | break; | |
d53d4ac5 | 19705 | |
21ae7a4d JK |
19706 | case DW_OP_const1u: |
19707 | stack[++stacki] = read_1_byte (objfile->obfd, &data[i]); | |
19708 | i += 1; | |
19709 | break; | |
19710 | ||
19711 | case DW_OP_const1s: | |
19712 | stack[++stacki] = read_1_signed_byte (objfile->obfd, &data[i]); | |
19713 | i += 1; | |
19714 | break; | |
19715 | ||
19716 | case DW_OP_const2u: | |
19717 | stack[++stacki] = read_2_bytes (objfile->obfd, &data[i]); | |
19718 | i += 2; | |
19719 | break; | |
19720 | ||
19721 | case DW_OP_const2s: | |
19722 | stack[++stacki] = read_2_signed_bytes (objfile->obfd, &data[i]); | |
19723 | i += 2; | |
19724 | break; | |
d53d4ac5 | 19725 | |
21ae7a4d JK |
19726 | case DW_OP_const4u: |
19727 | stack[++stacki] = read_4_bytes (objfile->obfd, &data[i]); | |
19728 | i += 4; | |
19729 | break; | |
19730 | ||
19731 | case DW_OP_const4s: | |
19732 | stack[++stacki] = read_4_signed_bytes (objfile->obfd, &data[i]); | |
19733 | i += 4; | |
19734 | break; | |
19735 | ||
585861ea JK |
19736 | case DW_OP_const8u: |
19737 | stack[++stacki] = read_8_bytes (objfile->obfd, &data[i]); | |
19738 | i += 8; | |
19739 | break; | |
19740 | ||
21ae7a4d JK |
19741 | case DW_OP_constu: |
19742 | stack[++stacki] = read_unsigned_leb128 (NULL, (data + i), | |
19743 | &bytes_read); | |
19744 | i += bytes_read; | |
19745 | break; | |
19746 | ||
19747 | case DW_OP_consts: | |
19748 | stack[++stacki] = read_signed_leb128 (NULL, (data + i), &bytes_read); | |
19749 | i += bytes_read; | |
19750 | break; | |
19751 | ||
19752 | case DW_OP_dup: | |
19753 | stack[stacki + 1] = stack[stacki]; | |
19754 | stacki++; | |
19755 | break; | |
19756 | ||
19757 | case DW_OP_plus: | |
19758 | stack[stacki - 1] += stack[stacki]; | |
19759 | stacki--; | |
19760 | break; | |
19761 | ||
19762 | case DW_OP_plus_uconst: | |
19763 | stack[stacki] += read_unsigned_leb128 (NULL, (data + i), | |
19764 | &bytes_read); | |
19765 | i += bytes_read; | |
19766 | break; | |
19767 | ||
19768 | case DW_OP_minus: | |
19769 | stack[stacki - 1] -= stack[stacki]; | |
19770 | stacki--; | |
19771 | break; | |
19772 | ||
19773 | case DW_OP_deref: | |
19774 | /* If we're not the last op, then we definitely can't encode | |
19775 | this using GDB's address_class enum. This is valid for partial | |
19776 | global symbols, although the variable's address will be bogus | |
19777 | in the psymtab. */ | |
19778 | if (i < size) | |
19779 | dwarf2_complex_location_expr_complaint (); | |
19780 | break; | |
19781 | ||
19782 | case DW_OP_GNU_push_tls_address: | |
19783 | /* The top of the stack has the offset from the beginning | |
19784 | of the thread control block at which the variable is located. */ | |
19785 | /* Nothing should follow this operator, so the top of stack would | |
19786 | be returned. */ | |
19787 | /* This is valid for partial global symbols, but the variable's | |
585861ea JK |
19788 | address will be bogus in the psymtab. Make it always at least |
19789 | non-zero to not look as a variable garbage collected by linker | |
19790 | which have DW_OP_addr 0. */ | |
21ae7a4d JK |
19791 | if (i < size) |
19792 | dwarf2_complex_location_expr_complaint (); | |
585861ea | 19793 | stack[stacki]++; |
21ae7a4d JK |
19794 | break; |
19795 | ||
19796 | case DW_OP_GNU_uninit: | |
19797 | break; | |
19798 | ||
3019eac3 | 19799 | case DW_OP_GNU_addr_index: |
49f6c839 | 19800 | case DW_OP_GNU_const_index: |
3019eac3 DE |
19801 | stack[++stacki] = read_addr_index_from_leb128 (cu, &data[i], |
19802 | &bytes_read); | |
19803 | i += bytes_read; | |
19804 | break; | |
19805 | ||
21ae7a4d JK |
19806 | default: |
19807 | { | |
f39c6ffd | 19808 | const char *name = get_DW_OP_name (op); |
21ae7a4d JK |
19809 | |
19810 | if (name) | |
19811 | complaint (&symfile_complaints, _("unsupported stack op: '%s'"), | |
19812 | name); | |
19813 | else | |
19814 | complaint (&symfile_complaints, _("unsupported stack op: '%02x'"), | |
19815 | op); | |
19816 | } | |
19817 | ||
19818 | return (stack[stacki]); | |
d53d4ac5 | 19819 | } |
3c6e0cb3 | 19820 | |
21ae7a4d JK |
19821 | /* Enforce maximum stack depth of SIZE-1 to avoid writing |
19822 | outside of the allocated space. Also enforce minimum>0. */ | |
19823 | if (stacki >= ARRAY_SIZE (stack) - 1) | |
19824 | { | |
19825 | complaint (&symfile_complaints, | |
19826 | _("location description stack overflow")); | |
19827 | return 0; | |
19828 | } | |
19829 | ||
19830 | if (stacki <= 0) | |
19831 | { | |
19832 | complaint (&symfile_complaints, | |
19833 | _("location description stack underflow")); | |
19834 | return 0; | |
19835 | } | |
19836 | } | |
19837 | return (stack[stacki]); | |
c906108c SS |
19838 | } |
19839 | ||
19840 | /* memory allocation interface */ | |
19841 | ||
c906108c | 19842 | static struct dwarf_block * |
7b5a2f43 | 19843 | dwarf_alloc_block (struct dwarf2_cu *cu) |
c906108c SS |
19844 | { |
19845 | struct dwarf_block *blk; | |
19846 | ||
19847 | blk = (struct dwarf_block *) | |
7b5a2f43 | 19848 | obstack_alloc (&cu->comp_unit_obstack, sizeof (struct dwarf_block)); |
c906108c SS |
19849 | return (blk); |
19850 | } | |
19851 | ||
c906108c | 19852 | static struct die_info * |
b60c80d6 | 19853 | dwarf_alloc_die (struct dwarf2_cu *cu, int num_attrs) |
c906108c SS |
19854 | { |
19855 | struct die_info *die; | |
b60c80d6 DJ |
19856 | size_t size = sizeof (struct die_info); |
19857 | ||
19858 | if (num_attrs > 1) | |
19859 | size += (num_attrs - 1) * sizeof (struct attribute); | |
c906108c | 19860 | |
b60c80d6 | 19861 | die = (struct die_info *) obstack_alloc (&cu->comp_unit_obstack, size); |
c906108c SS |
19862 | memset (die, 0, sizeof (struct die_info)); |
19863 | return (die); | |
19864 | } | |
2e276125 JB |
19865 | |
19866 | \f | |
19867 | /* Macro support. */ | |
19868 | ||
233d95b5 JK |
19869 | /* Return file name relative to the compilation directory of file number I in |
19870 | *LH's file name table. The result is allocated using xmalloc; the caller is | |
2e276125 | 19871 | responsible for freeing it. */ |
233d95b5 | 19872 | |
2e276125 | 19873 | static char * |
233d95b5 | 19874 | file_file_name (int file, struct line_header *lh) |
2e276125 | 19875 | { |
6a83a1e6 EZ |
19876 | /* Is the file number a valid index into the line header's file name |
19877 | table? Remember that file numbers start with one, not zero. */ | |
19878 | if (1 <= file && file <= lh->num_file_names) | |
19879 | { | |
19880 | struct file_entry *fe = &lh->file_names[file - 1]; | |
6e70227d | 19881 | |
233d95b5 | 19882 | if (IS_ABSOLUTE_PATH (fe->name) || fe->dir_index == 0) |
6a83a1e6 | 19883 | return xstrdup (fe->name); |
233d95b5 JK |
19884 | return concat (lh->include_dirs[fe->dir_index - 1], SLASH_STRING, |
19885 | fe->name, NULL); | |
6a83a1e6 | 19886 | } |
2e276125 JB |
19887 | else |
19888 | { | |
6a83a1e6 EZ |
19889 | /* The compiler produced a bogus file number. We can at least |
19890 | record the macro definitions made in the file, even if we | |
19891 | won't be able to find the file by name. */ | |
19892 | char fake_name[80]; | |
9a619af0 | 19893 | |
8c042590 PM |
19894 | xsnprintf (fake_name, sizeof (fake_name), |
19895 | "<bad macro file number %d>", file); | |
2e276125 | 19896 | |
6e70227d | 19897 | complaint (&symfile_complaints, |
6a83a1e6 EZ |
19898 | _("bad file number in macro information (%d)"), |
19899 | file); | |
2e276125 | 19900 | |
6a83a1e6 | 19901 | return xstrdup (fake_name); |
2e276125 JB |
19902 | } |
19903 | } | |
19904 | ||
233d95b5 JK |
19905 | /* Return the full name of file number I in *LH's file name table. |
19906 | Use COMP_DIR as the name of the current directory of the | |
19907 | compilation. The result is allocated using xmalloc; the caller is | |
19908 | responsible for freeing it. */ | |
19909 | static char * | |
19910 | file_full_name (int file, struct line_header *lh, const char *comp_dir) | |
19911 | { | |
19912 | /* Is the file number a valid index into the line header's file name | |
19913 | table? Remember that file numbers start with one, not zero. */ | |
19914 | if (1 <= file && file <= lh->num_file_names) | |
19915 | { | |
19916 | char *relative = file_file_name (file, lh); | |
19917 | ||
19918 | if (IS_ABSOLUTE_PATH (relative) || comp_dir == NULL) | |
19919 | return relative; | |
19920 | return reconcat (relative, comp_dir, SLASH_STRING, relative, NULL); | |
19921 | } | |
19922 | else | |
19923 | return file_file_name (file, lh); | |
19924 | } | |
19925 | ||
2e276125 JB |
19926 | |
19927 | static struct macro_source_file * | |
19928 | macro_start_file (int file, int line, | |
19929 | struct macro_source_file *current_file, | |
19930 | const char *comp_dir, | |
19931 | struct line_header *lh, struct objfile *objfile) | |
19932 | { | |
233d95b5 JK |
19933 | /* File name relative to the compilation directory of this source file. */ |
19934 | char *file_name = file_file_name (file, lh); | |
2e276125 | 19935 | |
2e276125 | 19936 | if (! current_file) |
abc9d0dc | 19937 | { |
fc474241 DE |
19938 | /* Note: We don't create a macro table for this compilation unit |
19939 | at all until we actually get a filename. */ | |
19940 | struct macro_table *macro_table = get_macro_table (objfile, comp_dir); | |
19941 | ||
abc9d0dc TT |
19942 | /* If we have no current file, then this must be the start_file |
19943 | directive for the compilation unit's main source file. */ | |
fc474241 DE |
19944 | current_file = macro_set_main (macro_table, file_name); |
19945 | macro_define_special (macro_table); | |
abc9d0dc | 19946 | } |
2e276125 | 19947 | else |
233d95b5 | 19948 | current_file = macro_include (current_file, line, file_name); |
2e276125 | 19949 | |
233d95b5 | 19950 | xfree (file_name); |
6e70227d | 19951 | |
2e276125 JB |
19952 | return current_file; |
19953 | } | |
19954 | ||
19955 | ||
19956 | /* Copy the LEN characters at BUF to a xmalloc'ed block of memory, | |
19957 | followed by a null byte. */ | |
19958 | static char * | |
19959 | copy_string (const char *buf, int len) | |
19960 | { | |
19961 | char *s = xmalloc (len + 1); | |
9a619af0 | 19962 | |
2e276125 JB |
19963 | memcpy (s, buf, len); |
19964 | s[len] = '\0'; | |
2e276125 JB |
19965 | return s; |
19966 | } | |
19967 | ||
19968 | ||
19969 | static const char * | |
19970 | consume_improper_spaces (const char *p, const char *body) | |
19971 | { | |
19972 | if (*p == ' ') | |
19973 | { | |
4d3c2250 | 19974 | complaint (&symfile_complaints, |
3e43a32a MS |
19975 | _("macro definition contains spaces " |
19976 | "in formal argument list:\n`%s'"), | |
4d3c2250 | 19977 | body); |
2e276125 JB |
19978 | |
19979 | while (*p == ' ') | |
19980 | p++; | |
19981 | } | |
19982 | ||
19983 | return p; | |
19984 | } | |
19985 | ||
19986 | ||
19987 | static void | |
19988 | parse_macro_definition (struct macro_source_file *file, int line, | |
19989 | const char *body) | |
19990 | { | |
19991 | const char *p; | |
19992 | ||
19993 | /* The body string takes one of two forms. For object-like macro | |
19994 | definitions, it should be: | |
19995 | ||
19996 | <macro name> " " <definition> | |
19997 | ||
19998 | For function-like macro definitions, it should be: | |
19999 | ||
20000 | <macro name> "() " <definition> | |
20001 | or | |
20002 | <macro name> "(" <arg name> ( "," <arg name> ) * ") " <definition> | |
20003 | ||
20004 | Spaces may appear only where explicitly indicated, and in the | |
20005 | <definition>. | |
20006 | ||
20007 | The Dwarf 2 spec says that an object-like macro's name is always | |
20008 | followed by a space, but versions of GCC around March 2002 omit | |
6e70227d | 20009 | the space when the macro's definition is the empty string. |
2e276125 JB |
20010 | |
20011 | The Dwarf 2 spec says that there should be no spaces between the | |
20012 | formal arguments in a function-like macro's formal argument list, | |
20013 | but versions of GCC around March 2002 include spaces after the | |
20014 | commas. */ | |
20015 | ||
20016 | ||
20017 | /* Find the extent of the macro name. The macro name is terminated | |
20018 | by either a space or null character (for an object-like macro) or | |
20019 | an opening paren (for a function-like macro). */ | |
20020 | for (p = body; *p; p++) | |
20021 | if (*p == ' ' || *p == '(') | |
20022 | break; | |
20023 | ||
20024 | if (*p == ' ' || *p == '\0') | |
20025 | { | |
20026 | /* It's an object-like macro. */ | |
20027 | int name_len = p - body; | |
20028 | char *name = copy_string (body, name_len); | |
20029 | const char *replacement; | |
20030 | ||
20031 | if (*p == ' ') | |
20032 | replacement = body + name_len + 1; | |
20033 | else | |
20034 | { | |
4d3c2250 | 20035 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
20036 | replacement = body + name_len; |
20037 | } | |
6e70227d | 20038 | |
2e276125 JB |
20039 | macro_define_object (file, line, name, replacement); |
20040 | ||
20041 | xfree (name); | |
20042 | } | |
20043 | else if (*p == '(') | |
20044 | { | |
20045 | /* It's a function-like macro. */ | |
20046 | char *name = copy_string (body, p - body); | |
20047 | int argc = 0; | |
20048 | int argv_size = 1; | |
20049 | char **argv = xmalloc (argv_size * sizeof (*argv)); | |
20050 | ||
20051 | p++; | |
20052 | ||
20053 | p = consume_improper_spaces (p, body); | |
20054 | ||
20055 | /* Parse the formal argument list. */ | |
20056 | while (*p && *p != ')') | |
20057 | { | |
20058 | /* Find the extent of the current argument name. */ | |
20059 | const char *arg_start = p; | |
20060 | ||
20061 | while (*p && *p != ',' && *p != ')' && *p != ' ') | |
20062 | p++; | |
20063 | ||
20064 | if (! *p || p == arg_start) | |
4d3c2250 | 20065 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
20066 | else |
20067 | { | |
20068 | /* Make sure argv has room for the new argument. */ | |
20069 | if (argc >= argv_size) | |
20070 | { | |
20071 | argv_size *= 2; | |
20072 | argv = xrealloc (argv, argv_size * sizeof (*argv)); | |
20073 | } | |
20074 | ||
20075 | argv[argc++] = copy_string (arg_start, p - arg_start); | |
20076 | } | |
20077 | ||
20078 | p = consume_improper_spaces (p, body); | |
20079 | ||
20080 | /* Consume the comma, if present. */ | |
20081 | if (*p == ',') | |
20082 | { | |
20083 | p++; | |
20084 | ||
20085 | p = consume_improper_spaces (p, body); | |
20086 | } | |
20087 | } | |
20088 | ||
20089 | if (*p == ')') | |
20090 | { | |
20091 | p++; | |
20092 | ||
20093 | if (*p == ' ') | |
20094 | /* Perfectly formed definition, no complaints. */ | |
20095 | macro_define_function (file, line, name, | |
6e70227d | 20096 | argc, (const char **) argv, |
2e276125 JB |
20097 | p + 1); |
20098 | else if (*p == '\0') | |
20099 | { | |
20100 | /* Complain, but do define it. */ | |
4d3c2250 | 20101 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 | 20102 | macro_define_function (file, line, name, |
6e70227d | 20103 | argc, (const char **) argv, |
2e276125 JB |
20104 | p); |
20105 | } | |
20106 | else | |
20107 | /* Just complain. */ | |
4d3c2250 | 20108 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
20109 | } |
20110 | else | |
20111 | /* Just complain. */ | |
4d3c2250 | 20112 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
20113 | |
20114 | xfree (name); | |
20115 | { | |
20116 | int i; | |
20117 | ||
20118 | for (i = 0; i < argc; i++) | |
20119 | xfree (argv[i]); | |
20120 | } | |
20121 | xfree (argv); | |
20122 | } | |
20123 | else | |
4d3c2250 | 20124 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
20125 | } |
20126 | ||
cf2c3c16 TT |
20127 | /* Skip some bytes from BYTES according to the form given in FORM. |
20128 | Returns the new pointer. */ | |
2e276125 | 20129 | |
d521ce57 TT |
20130 | static const gdb_byte * |
20131 | skip_form_bytes (bfd *abfd, const gdb_byte *bytes, const gdb_byte *buffer_end, | |
cf2c3c16 TT |
20132 | enum dwarf_form form, |
20133 | unsigned int offset_size, | |
20134 | struct dwarf2_section_info *section) | |
2e276125 | 20135 | { |
cf2c3c16 | 20136 | unsigned int bytes_read; |
2e276125 | 20137 | |
cf2c3c16 | 20138 | switch (form) |
2e276125 | 20139 | { |
cf2c3c16 TT |
20140 | case DW_FORM_data1: |
20141 | case DW_FORM_flag: | |
20142 | ++bytes; | |
20143 | break; | |
20144 | ||
20145 | case DW_FORM_data2: | |
20146 | bytes += 2; | |
20147 | break; | |
20148 | ||
20149 | case DW_FORM_data4: | |
20150 | bytes += 4; | |
20151 | break; | |
20152 | ||
20153 | case DW_FORM_data8: | |
20154 | bytes += 8; | |
20155 | break; | |
20156 | ||
20157 | case DW_FORM_string: | |
20158 | read_direct_string (abfd, bytes, &bytes_read); | |
20159 | bytes += bytes_read; | |
20160 | break; | |
20161 | ||
20162 | case DW_FORM_sec_offset: | |
20163 | case DW_FORM_strp: | |
36586728 | 20164 | case DW_FORM_GNU_strp_alt: |
cf2c3c16 TT |
20165 | bytes += offset_size; |
20166 | break; | |
20167 | ||
20168 | case DW_FORM_block: | |
20169 | bytes += read_unsigned_leb128 (abfd, bytes, &bytes_read); | |
20170 | bytes += bytes_read; | |
20171 | break; | |
20172 | ||
20173 | case DW_FORM_block1: | |
20174 | bytes += 1 + read_1_byte (abfd, bytes); | |
20175 | break; | |
20176 | case DW_FORM_block2: | |
20177 | bytes += 2 + read_2_bytes (abfd, bytes); | |
20178 | break; | |
20179 | case DW_FORM_block4: | |
20180 | bytes += 4 + read_4_bytes (abfd, bytes); | |
20181 | break; | |
20182 | ||
20183 | case DW_FORM_sdata: | |
20184 | case DW_FORM_udata: | |
3019eac3 DE |
20185 | case DW_FORM_GNU_addr_index: |
20186 | case DW_FORM_GNU_str_index: | |
d521ce57 | 20187 | bytes = gdb_skip_leb128 (bytes, buffer_end); |
f664829e DE |
20188 | if (bytes == NULL) |
20189 | { | |
20190 | dwarf2_section_buffer_overflow_complaint (section); | |
20191 | return NULL; | |
20192 | } | |
cf2c3c16 TT |
20193 | break; |
20194 | ||
20195 | default: | |
20196 | { | |
20197 | complain: | |
20198 | complaint (&symfile_complaints, | |
20199 | _("invalid form 0x%x in `%s'"), | |
a32a8923 | 20200 | form, get_section_name (section)); |
cf2c3c16 TT |
20201 | return NULL; |
20202 | } | |
2e276125 JB |
20203 | } |
20204 | ||
cf2c3c16 TT |
20205 | return bytes; |
20206 | } | |
757a13d0 | 20207 | |
cf2c3c16 TT |
20208 | /* A helper for dwarf_decode_macros that handles skipping an unknown |
20209 | opcode. Returns an updated pointer to the macro data buffer; or, | |
20210 | on error, issues a complaint and returns NULL. */ | |
757a13d0 | 20211 | |
d521ce57 | 20212 | static const gdb_byte * |
cf2c3c16 | 20213 | skip_unknown_opcode (unsigned int opcode, |
d521ce57 TT |
20214 | const gdb_byte **opcode_definitions, |
20215 | const gdb_byte *mac_ptr, const gdb_byte *mac_end, | |
cf2c3c16 TT |
20216 | bfd *abfd, |
20217 | unsigned int offset_size, | |
20218 | struct dwarf2_section_info *section) | |
20219 | { | |
20220 | unsigned int bytes_read, i; | |
20221 | unsigned long arg; | |
d521ce57 | 20222 | const gdb_byte *defn; |
2e276125 | 20223 | |
cf2c3c16 | 20224 | if (opcode_definitions[opcode] == NULL) |
2e276125 | 20225 | { |
cf2c3c16 TT |
20226 | complaint (&symfile_complaints, |
20227 | _("unrecognized DW_MACFINO opcode 0x%x"), | |
20228 | opcode); | |
20229 | return NULL; | |
20230 | } | |
2e276125 | 20231 | |
cf2c3c16 TT |
20232 | defn = opcode_definitions[opcode]; |
20233 | arg = read_unsigned_leb128 (abfd, defn, &bytes_read); | |
20234 | defn += bytes_read; | |
2e276125 | 20235 | |
cf2c3c16 TT |
20236 | for (i = 0; i < arg; ++i) |
20237 | { | |
f664829e DE |
20238 | mac_ptr = skip_form_bytes (abfd, mac_ptr, mac_end, defn[i], offset_size, |
20239 | section); | |
cf2c3c16 TT |
20240 | if (mac_ptr == NULL) |
20241 | { | |
20242 | /* skip_form_bytes already issued the complaint. */ | |
20243 | return NULL; | |
20244 | } | |
20245 | } | |
757a13d0 | 20246 | |
cf2c3c16 TT |
20247 | return mac_ptr; |
20248 | } | |
757a13d0 | 20249 | |
cf2c3c16 TT |
20250 | /* A helper function which parses the header of a macro section. |
20251 | If the macro section is the extended (for now called "GNU") type, | |
20252 | then this updates *OFFSET_SIZE. Returns a pointer to just after | |
20253 | the header, or issues a complaint and returns NULL on error. */ | |
757a13d0 | 20254 | |
d521ce57 TT |
20255 | static const gdb_byte * |
20256 | dwarf_parse_macro_header (const gdb_byte **opcode_definitions, | |
cf2c3c16 | 20257 | bfd *abfd, |
d521ce57 | 20258 | const gdb_byte *mac_ptr, |
cf2c3c16 TT |
20259 | unsigned int *offset_size, |
20260 | int section_is_gnu) | |
20261 | { | |
20262 | memset (opcode_definitions, 0, 256 * sizeof (gdb_byte *)); | |
757a13d0 | 20263 | |
cf2c3c16 TT |
20264 | if (section_is_gnu) |
20265 | { | |
20266 | unsigned int version, flags; | |
757a13d0 | 20267 | |
cf2c3c16 TT |
20268 | version = read_2_bytes (abfd, mac_ptr); |
20269 | if (version != 4) | |
20270 | { | |
20271 | complaint (&symfile_complaints, | |
20272 | _("unrecognized version `%d' in .debug_macro section"), | |
20273 | version); | |
20274 | return NULL; | |
20275 | } | |
20276 | mac_ptr += 2; | |
757a13d0 | 20277 | |
cf2c3c16 TT |
20278 | flags = read_1_byte (abfd, mac_ptr); |
20279 | ++mac_ptr; | |
20280 | *offset_size = (flags & 1) ? 8 : 4; | |
757a13d0 | 20281 | |
cf2c3c16 TT |
20282 | if ((flags & 2) != 0) |
20283 | /* We don't need the line table offset. */ | |
20284 | mac_ptr += *offset_size; | |
757a13d0 | 20285 | |
cf2c3c16 TT |
20286 | /* Vendor opcode descriptions. */ |
20287 | if ((flags & 4) != 0) | |
20288 | { | |
20289 | unsigned int i, count; | |
757a13d0 | 20290 | |
cf2c3c16 TT |
20291 | count = read_1_byte (abfd, mac_ptr); |
20292 | ++mac_ptr; | |
20293 | for (i = 0; i < count; ++i) | |
20294 | { | |
20295 | unsigned int opcode, bytes_read; | |
20296 | unsigned long arg; | |
20297 | ||
20298 | opcode = read_1_byte (abfd, mac_ptr); | |
20299 | ++mac_ptr; | |
20300 | opcode_definitions[opcode] = mac_ptr; | |
20301 | arg = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
20302 | mac_ptr += bytes_read; | |
20303 | mac_ptr += arg; | |
20304 | } | |
757a13d0 | 20305 | } |
cf2c3c16 | 20306 | } |
757a13d0 | 20307 | |
cf2c3c16 TT |
20308 | return mac_ptr; |
20309 | } | |
757a13d0 | 20310 | |
cf2c3c16 | 20311 | /* A helper for dwarf_decode_macros that handles the GNU extensions, |
8fc3fc34 | 20312 | including DW_MACRO_GNU_transparent_include. */ |
cf2c3c16 TT |
20313 | |
20314 | static void | |
d521ce57 TT |
20315 | dwarf_decode_macro_bytes (bfd *abfd, |
20316 | const gdb_byte *mac_ptr, const gdb_byte *mac_end, | |
cf2c3c16 | 20317 | struct macro_source_file *current_file, |
15d034d0 | 20318 | struct line_header *lh, const char *comp_dir, |
cf2c3c16 | 20319 | struct dwarf2_section_info *section, |
36586728 | 20320 | int section_is_gnu, int section_is_dwz, |
cf2c3c16 | 20321 | unsigned int offset_size, |
8fc3fc34 TT |
20322 | struct objfile *objfile, |
20323 | htab_t include_hash) | |
cf2c3c16 TT |
20324 | { |
20325 | enum dwarf_macro_record_type macinfo_type; | |
20326 | int at_commandline; | |
d521ce57 | 20327 | const gdb_byte *opcode_definitions[256]; |
757a13d0 | 20328 | |
cf2c3c16 TT |
20329 | mac_ptr = dwarf_parse_macro_header (opcode_definitions, abfd, mac_ptr, |
20330 | &offset_size, section_is_gnu); | |
20331 | if (mac_ptr == NULL) | |
20332 | { | |
20333 | /* We already issued a complaint. */ | |
20334 | return; | |
20335 | } | |
757a13d0 JK |
20336 | |
20337 | /* Determines if GDB is still before first DW_MACINFO_start_file. If true | |
20338 | GDB is still reading the definitions from command line. First | |
20339 | DW_MACINFO_start_file will need to be ignored as it was already executed | |
20340 | to create CURRENT_FILE for the main source holding also the command line | |
20341 | definitions. On first met DW_MACINFO_start_file this flag is reset to | |
20342 | normally execute all the remaining DW_MACINFO_start_file macinfos. */ | |
20343 | ||
20344 | at_commandline = 1; | |
20345 | ||
20346 | do | |
20347 | { | |
20348 | /* Do we at least have room for a macinfo type byte? */ | |
20349 | if (mac_ptr >= mac_end) | |
20350 | { | |
f664829e | 20351 | dwarf2_section_buffer_overflow_complaint (section); |
757a13d0 JK |
20352 | break; |
20353 | } | |
20354 | ||
20355 | macinfo_type = read_1_byte (abfd, mac_ptr); | |
20356 | mac_ptr++; | |
20357 | ||
cf2c3c16 TT |
20358 | /* Note that we rely on the fact that the corresponding GNU and |
20359 | DWARF constants are the same. */ | |
757a13d0 JK |
20360 | switch (macinfo_type) |
20361 | { | |
20362 | /* A zero macinfo type indicates the end of the macro | |
20363 | information. */ | |
20364 | case 0: | |
20365 | break; | |
2e276125 | 20366 | |
cf2c3c16 TT |
20367 | case DW_MACRO_GNU_define: |
20368 | case DW_MACRO_GNU_undef: | |
20369 | case DW_MACRO_GNU_define_indirect: | |
20370 | case DW_MACRO_GNU_undef_indirect: | |
36586728 TT |
20371 | case DW_MACRO_GNU_define_indirect_alt: |
20372 | case DW_MACRO_GNU_undef_indirect_alt: | |
2e276125 | 20373 | { |
891d2f0b | 20374 | unsigned int bytes_read; |
2e276125 | 20375 | int line; |
d521ce57 | 20376 | const char *body; |
cf2c3c16 | 20377 | int is_define; |
2e276125 | 20378 | |
cf2c3c16 TT |
20379 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); |
20380 | mac_ptr += bytes_read; | |
20381 | ||
20382 | if (macinfo_type == DW_MACRO_GNU_define | |
20383 | || macinfo_type == DW_MACRO_GNU_undef) | |
20384 | { | |
20385 | body = read_direct_string (abfd, mac_ptr, &bytes_read); | |
20386 | mac_ptr += bytes_read; | |
20387 | } | |
20388 | else | |
20389 | { | |
20390 | LONGEST str_offset; | |
20391 | ||
20392 | str_offset = read_offset_1 (abfd, mac_ptr, offset_size); | |
20393 | mac_ptr += offset_size; | |
2e276125 | 20394 | |
36586728 | 20395 | if (macinfo_type == DW_MACRO_GNU_define_indirect_alt |
f7a35f02 TT |
20396 | || macinfo_type == DW_MACRO_GNU_undef_indirect_alt |
20397 | || section_is_dwz) | |
36586728 TT |
20398 | { |
20399 | struct dwz_file *dwz = dwarf2_get_dwz_file (); | |
20400 | ||
20401 | body = read_indirect_string_from_dwz (dwz, str_offset); | |
20402 | } | |
20403 | else | |
20404 | body = read_indirect_string_at_offset (abfd, str_offset); | |
cf2c3c16 TT |
20405 | } |
20406 | ||
20407 | is_define = (macinfo_type == DW_MACRO_GNU_define | |
36586728 TT |
20408 | || macinfo_type == DW_MACRO_GNU_define_indirect |
20409 | || macinfo_type == DW_MACRO_GNU_define_indirect_alt); | |
2e276125 | 20410 | if (! current_file) |
757a13d0 JK |
20411 | { |
20412 | /* DWARF violation as no main source is present. */ | |
20413 | complaint (&symfile_complaints, | |
20414 | _("debug info with no main source gives macro %s " | |
20415 | "on line %d: %s"), | |
cf2c3c16 TT |
20416 | is_define ? _("definition") : _("undefinition"), |
20417 | line, body); | |
757a13d0 JK |
20418 | break; |
20419 | } | |
3e43a32a MS |
20420 | if ((line == 0 && !at_commandline) |
20421 | || (line != 0 && at_commandline)) | |
4d3c2250 | 20422 | complaint (&symfile_complaints, |
757a13d0 JK |
20423 | _("debug info gives %s macro %s with %s line %d: %s"), |
20424 | at_commandline ? _("command-line") : _("in-file"), | |
cf2c3c16 | 20425 | is_define ? _("definition") : _("undefinition"), |
757a13d0 JK |
20426 | line == 0 ? _("zero") : _("non-zero"), line, body); |
20427 | ||
cf2c3c16 | 20428 | if (is_define) |
757a13d0 | 20429 | parse_macro_definition (current_file, line, body); |
cf2c3c16 TT |
20430 | else |
20431 | { | |
20432 | gdb_assert (macinfo_type == DW_MACRO_GNU_undef | |
36586728 TT |
20433 | || macinfo_type == DW_MACRO_GNU_undef_indirect |
20434 | || macinfo_type == DW_MACRO_GNU_undef_indirect_alt); | |
cf2c3c16 TT |
20435 | macro_undef (current_file, line, body); |
20436 | } | |
2e276125 JB |
20437 | } |
20438 | break; | |
20439 | ||
cf2c3c16 | 20440 | case DW_MACRO_GNU_start_file: |
2e276125 | 20441 | { |
891d2f0b | 20442 | unsigned int bytes_read; |
2e276125 JB |
20443 | int line, file; |
20444 | ||
20445 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
20446 | mac_ptr += bytes_read; | |
20447 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
20448 | mac_ptr += bytes_read; | |
20449 | ||
3e43a32a MS |
20450 | if ((line == 0 && !at_commandline) |
20451 | || (line != 0 && at_commandline)) | |
757a13d0 JK |
20452 | complaint (&symfile_complaints, |
20453 | _("debug info gives source %d included " | |
20454 | "from %s at %s line %d"), | |
20455 | file, at_commandline ? _("command-line") : _("file"), | |
20456 | line == 0 ? _("zero") : _("non-zero"), line); | |
20457 | ||
20458 | if (at_commandline) | |
20459 | { | |
cf2c3c16 TT |
20460 | /* This DW_MACRO_GNU_start_file was executed in the |
20461 | pass one. */ | |
757a13d0 JK |
20462 | at_commandline = 0; |
20463 | } | |
20464 | else | |
20465 | current_file = macro_start_file (file, line, | |
20466 | current_file, comp_dir, | |
cf2c3c16 | 20467 | lh, objfile); |
2e276125 JB |
20468 | } |
20469 | break; | |
20470 | ||
cf2c3c16 | 20471 | case DW_MACRO_GNU_end_file: |
2e276125 | 20472 | if (! current_file) |
4d3c2250 | 20473 | complaint (&symfile_complaints, |
3e43a32a MS |
20474 | _("macro debug info has an unmatched " |
20475 | "`close_file' directive")); | |
2e276125 JB |
20476 | else |
20477 | { | |
20478 | current_file = current_file->included_by; | |
20479 | if (! current_file) | |
20480 | { | |
cf2c3c16 | 20481 | enum dwarf_macro_record_type next_type; |
2e276125 JB |
20482 | |
20483 | /* GCC circa March 2002 doesn't produce the zero | |
20484 | type byte marking the end of the compilation | |
20485 | unit. Complain if it's not there, but exit no | |
20486 | matter what. */ | |
20487 | ||
20488 | /* Do we at least have room for a macinfo type byte? */ | |
20489 | if (mac_ptr >= mac_end) | |
20490 | { | |
f664829e | 20491 | dwarf2_section_buffer_overflow_complaint (section); |
2e276125 JB |
20492 | return; |
20493 | } | |
20494 | ||
20495 | /* We don't increment mac_ptr here, so this is just | |
20496 | a look-ahead. */ | |
20497 | next_type = read_1_byte (abfd, mac_ptr); | |
20498 | if (next_type != 0) | |
4d3c2250 | 20499 | complaint (&symfile_complaints, |
3e43a32a MS |
20500 | _("no terminating 0-type entry for " |
20501 | "macros in `.debug_macinfo' section")); | |
2e276125 JB |
20502 | |
20503 | return; | |
20504 | } | |
20505 | } | |
20506 | break; | |
20507 | ||
cf2c3c16 | 20508 | case DW_MACRO_GNU_transparent_include: |
36586728 | 20509 | case DW_MACRO_GNU_transparent_include_alt: |
cf2c3c16 TT |
20510 | { |
20511 | LONGEST offset; | |
8fc3fc34 | 20512 | void **slot; |
a036ba48 TT |
20513 | bfd *include_bfd = abfd; |
20514 | struct dwarf2_section_info *include_section = section; | |
20515 | struct dwarf2_section_info alt_section; | |
d521ce57 | 20516 | const gdb_byte *include_mac_end = mac_end; |
a036ba48 | 20517 | int is_dwz = section_is_dwz; |
d521ce57 | 20518 | const gdb_byte *new_mac_ptr; |
cf2c3c16 TT |
20519 | |
20520 | offset = read_offset_1 (abfd, mac_ptr, offset_size); | |
20521 | mac_ptr += offset_size; | |
20522 | ||
a036ba48 TT |
20523 | if (macinfo_type == DW_MACRO_GNU_transparent_include_alt) |
20524 | { | |
20525 | struct dwz_file *dwz = dwarf2_get_dwz_file (); | |
20526 | ||
20527 | dwarf2_read_section (dwarf2_per_objfile->objfile, | |
20528 | &dwz->macro); | |
20529 | ||
a036ba48 | 20530 | include_section = &dwz->macro; |
a32a8923 | 20531 | include_bfd = get_section_bfd_owner (include_section); |
a036ba48 TT |
20532 | include_mac_end = dwz->macro.buffer + dwz->macro.size; |
20533 | is_dwz = 1; | |
20534 | } | |
20535 | ||
20536 | new_mac_ptr = include_section->buffer + offset; | |
20537 | slot = htab_find_slot (include_hash, new_mac_ptr, INSERT); | |
20538 | ||
8fc3fc34 TT |
20539 | if (*slot != NULL) |
20540 | { | |
20541 | /* This has actually happened; see | |
20542 | http://sourceware.org/bugzilla/show_bug.cgi?id=13568. */ | |
20543 | complaint (&symfile_complaints, | |
20544 | _("recursive DW_MACRO_GNU_transparent_include in " | |
20545 | ".debug_macro section")); | |
20546 | } | |
20547 | else | |
20548 | { | |
d521ce57 | 20549 | *slot = (void *) new_mac_ptr; |
36586728 | 20550 | |
a036ba48 | 20551 | dwarf_decode_macro_bytes (include_bfd, new_mac_ptr, |
36586728 | 20552 | include_mac_end, current_file, |
8fc3fc34 | 20553 | lh, comp_dir, |
36586728 | 20554 | section, section_is_gnu, is_dwz, |
8fc3fc34 TT |
20555 | offset_size, objfile, include_hash); |
20556 | ||
d521ce57 | 20557 | htab_remove_elt (include_hash, (void *) new_mac_ptr); |
8fc3fc34 | 20558 | } |
cf2c3c16 TT |
20559 | } |
20560 | break; | |
20561 | ||
2e276125 | 20562 | case DW_MACINFO_vendor_ext: |
cf2c3c16 TT |
20563 | if (!section_is_gnu) |
20564 | { | |
20565 | unsigned int bytes_read; | |
20566 | int constant; | |
2e276125 | 20567 | |
cf2c3c16 TT |
20568 | constant = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); |
20569 | mac_ptr += bytes_read; | |
20570 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
20571 | mac_ptr += bytes_read; | |
2e276125 | 20572 | |
cf2c3c16 TT |
20573 | /* We don't recognize any vendor extensions. */ |
20574 | break; | |
20575 | } | |
20576 | /* FALLTHROUGH */ | |
20577 | ||
20578 | default: | |
20579 | mac_ptr = skip_unknown_opcode (macinfo_type, opcode_definitions, | |
f664829e | 20580 | mac_ptr, mac_end, abfd, offset_size, |
cf2c3c16 TT |
20581 | section); |
20582 | if (mac_ptr == NULL) | |
20583 | return; | |
20584 | break; | |
2e276125 | 20585 | } |
757a13d0 | 20586 | } while (macinfo_type != 0); |
2e276125 | 20587 | } |
8e19ed76 | 20588 | |
cf2c3c16 | 20589 | static void |
09262596 | 20590 | dwarf_decode_macros (struct dwarf2_cu *cu, unsigned int offset, |
15d034d0 | 20591 | const char *comp_dir, int section_is_gnu) |
cf2c3c16 | 20592 | { |
bb5ed363 | 20593 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
09262596 DE |
20594 | struct line_header *lh = cu->line_header; |
20595 | bfd *abfd; | |
d521ce57 | 20596 | const gdb_byte *mac_ptr, *mac_end; |
cf2c3c16 TT |
20597 | struct macro_source_file *current_file = 0; |
20598 | enum dwarf_macro_record_type macinfo_type; | |
20599 | unsigned int offset_size = cu->header.offset_size; | |
d521ce57 | 20600 | const gdb_byte *opcode_definitions[256]; |
8fc3fc34 TT |
20601 | struct cleanup *cleanup; |
20602 | htab_t include_hash; | |
20603 | void **slot; | |
09262596 DE |
20604 | struct dwarf2_section_info *section; |
20605 | const char *section_name; | |
20606 | ||
20607 | if (cu->dwo_unit != NULL) | |
20608 | { | |
20609 | if (section_is_gnu) | |
20610 | { | |
20611 | section = &cu->dwo_unit->dwo_file->sections.macro; | |
20612 | section_name = ".debug_macro.dwo"; | |
20613 | } | |
20614 | else | |
20615 | { | |
20616 | section = &cu->dwo_unit->dwo_file->sections.macinfo; | |
20617 | section_name = ".debug_macinfo.dwo"; | |
20618 | } | |
20619 | } | |
20620 | else | |
20621 | { | |
20622 | if (section_is_gnu) | |
20623 | { | |
20624 | section = &dwarf2_per_objfile->macro; | |
20625 | section_name = ".debug_macro"; | |
20626 | } | |
20627 | else | |
20628 | { | |
20629 | section = &dwarf2_per_objfile->macinfo; | |
20630 | section_name = ".debug_macinfo"; | |
20631 | } | |
20632 | } | |
cf2c3c16 | 20633 | |
bb5ed363 | 20634 | dwarf2_read_section (objfile, section); |
cf2c3c16 TT |
20635 | if (section->buffer == NULL) |
20636 | { | |
fceca515 | 20637 | complaint (&symfile_complaints, _("missing %s section"), section_name); |
cf2c3c16 TT |
20638 | return; |
20639 | } | |
a32a8923 | 20640 | abfd = get_section_bfd_owner (section); |
cf2c3c16 TT |
20641 | |
20642 | /* First pass: Find the name of the base filename. | |
20643 | This filename is needed in order to process all macros whose definition | |
20644 | (or undefinition) comes from the command line. These macros are defined | |
20645 | before the first DW_MACINFO_start_file entry, and yet still need to be | |
20646 | associated to the base file. | |
20647 | ||
20648 | To determine the base file name, we scan the macro definitions until we | |
20649 | reach the first DW_MACINFO_start_file entry. We then initialize | |
20650 | CURRENT_FILE accordingly so that any macro definition found before the | |
20651 | first DW_MACINFO_start_file can still be associated to the base file. */ | |
20652 | ||
20653 | mac_ptr = section->buffer + offset; | |
20654 | mac_end = section->buffer + section->size; | |
20655 | ||
20656 | mac_ptr = dwarf_parse_macro_header (opcode_definitions, abfd, mac_ptr, | |
20657 | &offset_size, section_is_gnu); | |
20658 | if (mac_ptr == NULL) | |
20659 | { | |
20660 | /* We already issued a complaint. */ | |
20661 | return; | |
20662 | } | |
20663 | ||
20664 | do | |
20665 | { | |
20666 | /* Do we at least have room for a macinfo type byte? */ | |
20667 | if (mac_ptr >= mac_end) | |
20668 | { | |
20669 | /* Complaint is printed during the second pass as GDB will probably | |
20670 | stop the first pass earlier upon finding | |
20671 | DW_MACINFO_start_file. */ | |
20672 | break; | |
20673 | } | |
20674 | ||
20675 | macinfo_type = read_1_byte (abfd, mac_ptr); | |
20676 | mac_ptr++; | |
20677 | ||
20678 | /* Note that we rely on the fact that the corresponding GNU and | |
20679 | DWARF constants are the same. */ | |
20680 | switch (macinfo_type) | |
20681 | { | |
20682 | /* A zero macinfo type indicates the end of the macro | |
20683 | information. */ | |
20684 | case 0: | |
20685 | break; | |
20686 | ||
20687 | case DW_MACRO_GNU_define: | |
20688 | case DW_MACRO_GNU_undef: | |
20689 | /* Only skip the data by MAC_PTR. */ | |
20690 | { | |
20691 | unsigned int bytes_read; | |
20692 | ||
20693 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
20694 | mac_ptr += bytes_read; | |
20695 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
20696 | mac_ptr += bytes_read; | |
20697 | } | |
20698 | break; | |
20699 | ||
20700 | case DW_MACRO_GNU_start_file: | |
20701 | { | |
20702 | unsigned int bytes_read; | |
20703 | int line, file; | |
20704 | ||
20705 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
20706 | mac_ptr += bytes_read; | |
20707 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
20708 | mac_ptr += bytes_read; | |
20709 | ||
20710 | current_file = macro_start_file (file, line, current_file, | |
bb5ed363 | 20711 | comp_dir, lh, objfile); |
cf2c3c16 TT |
20712 | } |
20713 | break; | |
20714 | ||
20715 | case DW_MACRO_GNU_end_file: | |
20716 | /* No data to skip by MAC_PTR. */ | |
20717 | break; | |
20718 | ||
20719 | case DW_MACRO_GNU_define_indirect: | |
20720 | case DW_MACRO_GNU_undef_indirect: | |
f7a35f02 TT |
20721 | case DW_MACRO_GNU_define_indirect_alt: |
20722 | case DW_MACRO_GNU_undef_indirect_alt: | |
cf2c3c16 TT |
20723 | { |
20724 | unsigned int bytes_read; | |
20725 | ||
20726 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
20727 | mac_ptr += bytes_read; | |
20728 | mac_ptr += offset_size; | |
20729 | } | |
20730 | break; | |
20731 | ||
20732 | case DW_MACRO_GNU_transparent_include: | |
f7a35f02 | 20733 | case DW_MACRO_GNU_transparent_include_alt: |
cf2c3c16 TT |
20734 | /* Note that, according to the spec, a transparent include |
20735 | chain cannot call DW_MACRO_GNU_start_file. So, we can just | |
20736 | skip this opcode. */ | |
20737 | mac_ptr += offset_size; | |
20738 | break; | |
20739 | ||
20740 | case DW_MACINFO_vendor_ext: | |
20741 | /* Only skip the data by MAC_PTR. */ | |
20742 | if (!section_is_gnu) | |
20743 | { | |
20744 | unsigned int bytes_read; | |
20745 | ||
20746 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
20747 | mac_ptr += bytes_read; | |
20748 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
20749 | mac_ptr += bytes_read; | |
20750 | } | |
20751 | /* FALLTHROUGH */ | |
20752 | ||
20753 | default: | |
20754 | mac_ptr = skip_unknown_opcode (macinfo_type, opcode_definitions, | |
f664829e | 20755 | mac_ptr, mac_end, abfd, offset_size, |
cf2c3c16 TT |
20756 | section); |
20757 | if (mac_ptr == NULL) | |
20758 | return; | |
20759 | break; | |
20760 | } | |
20761 | } while (macinfo_type != 0 && current_file == NULL); | |
20762 | ||
20763 | /* Second pass: Process all entries. | |
20764 | ||
20765 | Use the AT_COMMAND_LINE flag to determine whether we are still processing | |
20766 | command-line macro definitions/undefinitions. This flag is unset when we | |
20767 | reach the first DW_MACINFO_start_file entry. */ | |
20768 | ||
8fc3fc34 TT |
20769 | include_hash = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, |
20770 | NULL, xcalloc, xfree); | |
20771 | cleanup = make_cleanup_htab_delete (include_hash); | |
20772 | mac_ptr = section->buffer + offset; | |
20773 | slot = htab_find_slot (include_hash, mac_ptr, INSERT); | |
d521ce57 | 20774 | *slot = (void *) mac_ptr; |
8fc3fc34 | 20775 | dwarf_decode_macro_bytes (abfd, mac_ptr, mac_end, |
36586728 TT |
20776 | current_file, lh, comp_dir, section, |
20777 | section_is_gnu, 0, | |
8fc3fc34 TT |
20778 | offset_size, objfile, include_hash); |
20779 | do_cleanups (cleanup); | |
cf2c3c16 TT |
20780 | } |
20781 | ||
8e19ed76 | 20782 | /* Check if the attribute's form is a DW_FORM_block* |
0963b4bd | 20783 | if so return true else false. */ |
380bca97 | 20784 | |
8e19ed76 | 20785 | static int |
6e5a29e1 | 20786 | attr_form_is_block (const struct attribute *attr) |
8e19ed76 PS |
20787 | { |
20788 | return (attr == NULL ? 0 : | |
20789 | attr->form == DW_FORM_block1 | |
20790 | || attr->form == DW_FORM_block2 | |
20791 | || attr->form == DW_FORM_block4 | |
2dc7f7b3 TT |
20792 | || attr->form == DW_FORM_block |
20793 | || attr->form == DW_FORM_exprloc); | |
8e19ed76 | 20794 | } |
4c2df51b | 20795 | |
c6a0999f JB |
20796 | /* Return non-zero if ATTR's value is a section offset --- classes |
20797 | lineptr, loclistptr, macptr or rangelistptr --- or zero, otherwise. | |
20798 | You may use DW_UNSND (attr) to retrieve such offsets. | |
20799 | ||
20800 | Section 7.5.4, "Attribute Encodings", explains that no attribute | |
20801 | may have a value that belongs to more than one of these classes; it | |
20802 | would be ambiguous if we did, because we use the same forms for all | |
20803 | of them. */ | |
380bca97 | 20804 | |
3690dd37 | 20805 | static int |
6e5a29e1 | 20806 | attr_form_is_section_offset (const struct attribute *attr) |
3690dd37 JB |
20807 | { |
20808 | return (attr->form == DW_FORM_data4 | |
2dc7f7b3 TT |
20809 | || attr->form == DW_FORM_data8 |
20810 | || attr->form == DW_FORM_sec_offset); | |
3690dd37 JB |
20811 | } |
20812 | ||
3690dd37 JB |
20813 | /* Return non-zero if ATTR's value falls in the 'constant' class, or |
20814 | zero otherwise. When this function returns true, you can apply | |
20815 | dwarf2_get_attr_constant_value to it. | |
20816 | ||
20817 | However, note that for some attributes you must check | |
20818 | attr_form_is_section_offset before using this test. DW_FORM_data4 | |
20819 | and DW_FORM_data8 are members of both the constant class, and of | |
20820 | the classes that contain offsets into other debug sections | |
20821 | (lineptr, loclistptr, macptr or rangelistptr). The DWARF spec says | |
20822 | that, if an attribute's can be either a constant or one of the | |
20823 | section offset classes, DW_FORM_data4 and DW_FORM_data8 should be | |
20824 | taken as section offsets, not constants. */ | |
380bca97 | 20825 | |
3690dd37 | 20826 | static int |
6e5a29e1 | 20827 | attr_form_is_constant (const struct attribute *attr) |
3690dd37 JB |
20828 | { |
20829 | switch (attr->form) | |
20830 | { | |
20831 | case DW_FORM_sdata: | |
20832 | case DW_FORM_udata: | |
20833 | case DW_FORM_data1: | |
20834 | case DW_FORM_data2: | |
20835 | case DW_FORM_data4: | |
20836 | case DW_FORM_data8: | |
20837 | return 1; | |
20838 | default: | |
20839 | return 0; | |
20840 | } | |
20841 | } | |
20842 | ||
7771576e SA |
20843 | |
20844 | /* DW_ADDR is always stored already as sect_offset; despite for the forms | |
20845 | besides DW_FORM_ref_addr it is stored as cu_offset in the DWARF file. */ | |
20846 | ||
20847 | static int | |
6e5a29e1 | 20848 | attr_form_is_ref (const struct attribute *attr) |
7771576e SA |
20849 | { |
20850 | switch (attr->form) | |
20851 | { | |
20852 | case DW_FORM_ref_addr: | |
20853 | case DW_FORM_ref1: | |
20854 | case DW_FORM_ref2: | |
20855 | case DW_FORM_ref4: | |
20856 | case DW_FORM_ref8: | |
20857 | case DW_FORM_ref_udata: | |
20858 | case DW_FORM_GNU_ref_alt: | |
20859 | return 1; | |
20860 | default: | |
20861 | return 0; | |
20862 | } | |
20863 | } | |
20864 | ||
3019eac3 DE |
20865 | /* Return the .debug_loc section to use for CU. |
20866 | For DWO files use .debug_loc.dwo. */ | |
20867 | ||
20868 | static struct dwarf2_section_info * | |
20869 | cu_debug_loc_section (struct dwarf2_cu *cu) | |
20870 | { | |
20871 | if (cu->dwo_unit) | |
20872 | return &cu->dwo_unit->dwo_file->sections.loc; | |
20873 | return &dwarf2_per_objfile->loc; | |
20874 | } | |
20875 | ||
8cf6f0b1 TT |
20876 | /* A helper function that fills in a dwarf2_loclist_baton. */ |
20877 | ||
20878 | static void | |
20879 | fill_in_loclist_baton (struct dwarf2_cu *cu, | |
20880 | struct dwarf2_loclist_baton *baton, | |
ff39bb5e | 20881 | const struct attribute *attr) |
8cf6f0b1 | 20882 | { |
3019eac3 DE |
20883 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
20884 | ||
20885 | dwarf2_read_section (dwarf2_per_objfile->objfile, section); | |
8cf6f0b1 TT |
20886 | |
20887 | baton->per_cu = cu->per_cu; | |
20888 | gdb_assert (baton->per_cu); | |
20889 | /* We don't know how long the location list is, but make sure we | |
20890 | don't run off the edge of the section. */ | |
3019eac3 DE |
20891 | baton->size = section->size - DW_UNSND (attr); |
20892 | baton->data = section->buffer + DW_UNSND (attr); | |
8cf6f0b1 | 20893 | baton->base_address = cu->base_address; |
f664829e | 20894 | baton->from_dwo = cu->dwo_unit != NULL; |
8cf6f0b1 TT |
20895 | } |
20896 | ||
4c2df51b | 20897 | static void |
ff39bb5e | 20898 | dwarf2_symbol_mark_computed (const struct attribute *attr, struct symbol *sym, |
f1e6e072 | 20899 | struct dwarf2_cu *cu, int is_block) |
4c2df51b | 20900 | { |
bb5ed363 | 20901 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3019eac3 | 20902 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
bb5ed363 | 20903 | |
3690dd37 | 20904 | if (attr_form_is_section_offset (attr) |
3019eac3 | 20905 | /* .debug_loc{,.dwo} may not exist at all, or the offset may be outside |
99bcc461 DJ |
20906 | the section. If so, fall through to the complaint in the |
20907 | other branch. */ | |
3019eac3 | 20908 | && DW_UNSND (attr) < dwarf2_section_size (objfile, section)) |
4c2df51b | 20909 | { |
0d53c4c4 | 20910 | struct dwarf2_loclist_baton *baton; |
4c2df51b | 20911 | |
bb5ed363 | 20912 | baton = obstack_alloc (&objfile->objfile_obstack, |
0d53c4c4 | 20913 | sizeof (struct dwarf2_loclist_baton)); |
4c2df51b | 20914 | |
8cf6f0b1 | 20915 | fill_in_loclist_baton (cu, baton, attr); |
be391dca | 20916 | |
d00adf39 | 20917 | if (cu->base_known == 0) |
0d53c4c4 | 20918 | complaint (&symfile_complaints, |
3e43a32a MS |
20919 | _("Location list used without " |
20920 | "specifying the CU base address.")); | |
4c2df51b | 20921 | |
f1e6e072 TT |
20922 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
20923 | ? dwarf2_loclist_block_index | |
20924 | : dwarf2_loclist_index); | |
0d53c4c4 DJ |
20925 | SYMBOL_LOCATION_BATON (sym) = baton; |
20926 | } | |
20927 | else | |
20928 | { | |
20929 | struct dwarf2_locexpr_baton *baton; | |
20930 | ||
bb5ed363 | 20931 | baton = obstack_alloc (&objfile->objfile_obstack, |
0d53c4c4 | 20932 | sizeof (struct dwarf2_locexpr_baton)); |
ae0d2f24 UW |
20933 | baton->per_cu = cu->per_cu; |
20934 | gdb_assert (baton->per_cu); | |
0d53c4c4 DJ |
20935 | |
20936 | if (attr_form_is_block (attr)) | |
20937 | { | |
20938 | /* Note that we're just copying the block's data pointer | |
20939 | here, not the actual data. We're still pointing into the | |
6502dd73 DJ |
20940 | info_buffer for SYM's objfile; right now we never release |
20941 | that buffer, but when we do clean up properly this may | |
20942 | need to change. */ | |
0d53c4c4 DJ |
20943 | baton->size = DW_BLOCK (attr)->size; |
20944 | baton->data = DW_BLOCK (attr)->data; | |
20945 | } | |
20946 | else | |
20947 | { | |
20948 | dwarf2_invalid_attrib_class_complaint ("location description", | |
20949 | SYMBOL_NATURAL_NAME (sym)); | |
20950 | baton->size = 0; | |
0d53c4c4 | 20951 | } |
6e70227d | 20952 | |
f1e6e072 TT |
20953 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
20954 | ? dwarf2_locexpr_block_index | |
20955 | : dwarf2_locexpr_index); | |
0d53c4c4 DJ |
20956 | SYMBOL_LOCATION_BATON (sym) = baton; |
20957 | } | |
4c2df51b | 20958 | } |
6502dd73 | 20959 | |
9aa1f1e3 TT |
20960 | /* Return the OBJFILE associated with the compilation unit CU. If CU |
20961 | came from a separate debuginfo file, then the master objfile is | |
20962 | returned. */ | |
ae0d2f24 UW |
20963 | |
20964 | struct objfile * | |
20965 | dwarf2_per_cu_objfile (struct dwarf2_per_cu_data *per_cu) | |
20966 | { | |
9291a0cd | 20967 | struct objfile *objfile = per_cu->objfile; |
ae0d2f24 UW |
20968 | |
20969 | /* Return the master objfile, so that we can report and look up the | |
20970 | correct file containing this variable. */ | |
20971 | if (objfile->separate_debug_objfile_backlink) | |
20972 | objfile = objfile->separate_debug_objfile_backlink; | |
20973 | ||
20974 | return objfile; | |
20975 | } | |
20976 | ||
96408a79 SA |
20977 | /* Return comp_unit_head for PER_CU, either already available in PER_CU->CU |
20978 | (CU_HEADERP is unused in such case) or prepare a temporary copy at | |
20979 | CU_HEADERP first. */ | |
20980 | ||
20981 | static const struct comp_unit_head * | |
20982 | per_cu_header_read_in (struct comp_unit_head *cu_headerp, | |
20983 | struct dwarf2_per_cu_data *per_cu) | |
20984 | { | |
d521ce57 | 20985 | const gdb_byte *info_ptr; |
96408a79 SA |
20986 | |
20987 | if (per_cu->cu) | |
20988 | return &per_cu->cu->header; | |
20989 | ||
8a0459fd | 20990 | info_ptr = per_cu->section->buffer + per_cu->offset.sect_off; |
96408a79 SA |
20991 | |
20992 | memset (cu_headerp, 0, sizeof (*cu_headerp)); | |
0bc3a05c | 20993 | read_comp_unit_head (cu_headerp, info_ptr, per_cu->objfile->obfd); |
96408a79 SA |
20994 | |
20995 | return cu_headerp; | |
20996 | } | |
20997 | ||
ae0d2f24 UW |
20998 | /* Return the address size given in the compilation unit header for CU. */ |
20999 | ||
98714339 | 21000 | int |
ae0d2f24 UW |
21001 | dwarf2_per_cu_addr_size (struct dwarf2_per_cu_data *per_cu) |
21002 | { | |
96408a79 SA |
21003 | struct comp_unit_head cu_header_local; |
21004 | const struct comp_unit_head *cu_headerp; | |
c471e790 | 21005 | |
96408a79 SA |
21006 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); |
21007 | ||
21008 | return cu_headerp->addr_size; | |
ae0d2f24 UW |
21009 | } |
21010 | ||
9eae7c52 TT |
21011 | /* Return the offset size given in the compilation unit header for CU. */ |
21012 | ||
21013 | int | |
21014 | dwarf2_per_cu_offset_size (struct dwarf2_per_cu_data *per_cu) | |
21015 | { | |
96408a79 SA |
21016 | struct comp_unit_head cu_header_local; |
21017 | const struct comp_unit_head *cu_headerp; | |
9c6c53f7 | 21018 | |
96408a79 SA |
21019 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); |
21020 | ||
21021 | return cu_headerp->offset_size; | |
21022 | } | |
21023 | ||
21024 | /* See its dwarf2loc.h declaration. */ | |
21025 | ||
21026 | int | |
21027 | dwarf2_per_cu_ref_addr_size (struct dwarf2_per_cu_data *per_cu) | |
21028 | { | |
21029 | struct comp_unit_head cu_header_local; | |
21030 | const struct comp_unit_head *cu_headerp; | |
21031 | ||
21032 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); | |
21033 | ||
21034 | if (cu_headerp->version == 2) | |
21035 | return cu_headerp->addr_size; | |
21036 | else | |
21037 | return cu_headerp->offset_size; | |
181cebd4 JK |
21038 | } |
21039 | ||
9aa1f1e3 TT |
21040 | /* Return the text offset of the CU. The returned offset comes from |
21041 | this CU's objfile. If this objfile came from a separate debuginfo | |
21042 | file, then the offset may be different from the corresponding | |
21043 | offset in the parent objfile. */ | |
21044 | ||
21045 | CORE_ADDR | |
21046 | dwarf2_per_cu_text_offset (struct dwarf2_per_cu_data *per_cu) | |
21047 | { | |
bb3fa9d0 | 21048 | struct objfile *objfile = per_cu->objfile; |
9aa1f1e3 TT |
21049 | |
21050 | return ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
21051 | } | |
21052 | ||
348e048f DE |
21053 | /* Locate the .debug_info compilation unit from CU's objfile which contains |
21054 | the DIE at OFFSET. Raises an error on failure. */ | |
ae038cb0 DJ |
21055 | |
21056 | static struct dwarf2_per_cu_data * | |
b64f50a1 | 21057 | dwarf2_find_containing_comp_unit (sect_offset offset, |
36586728 | 21058 | unsigned int offset_in_dwz, |
ae038cb0 DJ |
21059 | struct objfile *objfile) |
21060 | { | |
21061 | struct dwarf2_per_cu_data *this_cu; | |
21062 | int low, high; | |
36586728 | 21063 | const sect_offset *cu_off; |
ae038cb0 | 21064 | |
ae038cb0 DJ |
21065 | low = 0; |
21066 | high = dwarf2_per_objfile->n_comp_units - 1; | |
21067 | while (high > low) | |
21068 | { | |
36586728 | 21069 | struct dwarf2_per_cu_data *mid_cu; |
ae038cb0 | 21070 | int mid = low + (high - low) / 2; |
9a619af0 | 21071 | |
36586728 TT |
21072 | mid_cu = dwarf2_per_objfile->all_comp_units[mid]; |
21073 | cu_off = &mid_cu->offset; | |
21074 | if (mid_cu->is_dwz > offset_in_dwz | |
21075 | || (mid_cu->is_dwz == offset_in_dwz | |
21076 | && cu_off->sect_off >= offset.sect_off)) | |
ae038cb0 DJ |
21077 | high = mid; |
21078 | else | |
21079 | low = mid + 1; | |
21080 | } | |
21081 | gdb_assert (low == high); | |
36586728 TT |
21082 | this_cu = dwarf2_per_objfile->all_comp_units[low]; |
21083 | cu_off = &this_cu->offset; | |
21084 | if (this_cu->is_dwz != offset_in_dwz || cu_off->sect_off > offset.sect_off) | |
ae038cb0 | 21085 | { |
36586728 | 21086 | if (low == 0 || this_cu->is_dwz != offset_in_dwz) |
8a3fe4f8 AC |
21087 | error (_("Dwarf Error: could not find partial DIE containing " |
21088 | "offset 0x%lx [in module %s]"), | |
b64f50a1 | 21089 | (long) offset.sect_off, bfd_get_filename (objfile->obfd)); |
10b3939b | 21090 | |
b64f50a1 JK |
21091 | gdb_assert (dwarf2_per_objfile->all_comp_units[low-1]->offset.sect_off |
21092 | <= offset.sect_off); | |
ae038cb0 DJ |
21093 | return dwarf2_per_objfile->all_comp_units[low-1]; |
21094 | } | |
21095 | else | |
21096 | { | |
21097 | this_cu = dwarf2_per_objfile->all_comp_units[low]; | |
21098 | if (low == dwarf2_per_objfile->n_comp_units - 1 | |
b64f50a1 JK |
21099 | && offset.sect_off >= this_cu->offset.sect_off + this_cu->length) |
21100 | error (_("invalid dwarf2 offset %u"), offset.sect_off); | |
21101 | gdb_assert (offset.sect_off < this_cu->offset.sect_off + this_cu->length); | |
ae038cb0 DJ |
21102 | return this_cu; |
21103 | } | |
21104 | } | |
21105 | ||
23745b47 | 21106 | /* Initialize dwarf2_cu CU, owned by PER_CU. */ |
93311388 | 21107 | |
9816fde3 | 21108 | static void |
23745b47 | 21109 | init_one_comp_unit (struct dwarf2_cu *cu, struct dwarf2_per_cu_data *per_cu) |
93311388 | 21110 | { |
9816fde3 | 21111 | memset (cu, 0, sizeof (*cu)); |
23745b47 DE |
21112 | per_cu->cu = cu; |
21113 | cu->per_cu = per_cu; | |
21114 | cu->objfile = per_cu->objfile; | |
93311388 | 21115 | obstack_init (&cu->comp_unit_obstack); |
9816fde3 JK |
21116 | } |
21117 | ||
21118 | /* Initialize basic fields of dwarf_cu CU according to DIE COMP_UNIT_DIE. */ | |
21119 | ||
21120 | static void | |
95554aad TT |
21121 | prepare_one_comp_unit (struct dwarf2_cu *cu, struct die_info *comp_unit_die, |
21122 | enum language pretend_language) | |
9816fde3 JK |
21123 | { |
21124 | struct attribute *attr; | |
21125 | ||
21126 | /* Set the language we're debugging. */ | |
21127 | attr = dwarf2_attr (comp_unit_die, DW_AT_language, cu); | |
21128 | if (attr) | |
21129 | set_cu_language (DW_UNSND (attr), cu); | |
21130 | else | |
9cded63f | 21131 | { |
95554aad | 21132 | cu->language = pretend_language; |
9cded63f TT |
21133 | cu->language_defn = language_def (cu->language); |
21134 | } | |
dee91e82 DE |
21135 | |
21136 | attr = dwarf2_attr (comp_unit_die, DW_AT_producer, cu); | |
21137 | if (attr) | |
21138 | cu->producer = DW_STRING (attr); | |
93311388 DE |
21139 | } |
21140 | ||
ae038cb0 DJ |
21141 | /* Release one cached compilation unit, CU. We unlink it from the tree |
21142 | of compilation units, but we don't remove it from the read_in_chain; | |
93311388 DE |
21143 | the caller is responsible for that. |
21144 | NOTE: DATA is a void * because this function is also used as a | |
21145 | cleanup routine. */ | |
ae038cb0 DJ |
21146 | |
21147 | static void | |
68dc6402 | 21148 | free_heap_comp_unit (void *data) |
ae038cb0 DJ |
21149 | { |
21150 | struct dwarf2_cu *cu = data; | |
21151 | ||
23745b47 DE |
21152 | gdb_assert (cu->per_cu != NULL); |
21153 | cu->per_cu->cu = NULL; | |
ae038cb0 DJ |
21154 | cu->per_cu = NULL; |
21155 | ||
21156 | obstack_free (&cu->comp_unit_obstack, NULL); | |
21157 | ||
21158 | xfree (cu); | |
21159 | } | |
21160 | ||
72bf9492 | 21161 | /* This cleanup function is passed the address of a dwarf2_cu on the stack |
ae038cb0 | 21162 | when we're finished with it. We can't free the pointer itself, but be |
dee91e82 | 21163 | sure to unlink it from the cache. Also release any associated storage. */ |
72bf9492 DJ |
21164 | |
21165 | static void | |
21166 | free_stack_comp_unit (void *data) | |
21167 | { | |
21168 | struct dwarf2_cu *cu = data; | |
21169 | ||
23745b47 DE |
21170 | gdb_assert (cu->per_cu != NULL); |
21171 | cu->per_cu->cu = NULL; | |
21172 | cu->per_cu = NULL; | |
21173 | ||
72bf9492 DJ |
21174 | obstack_free (&cu->comp_unit_obstack, NULL); |
21175 | cu->partial_dies = NULL; | |
ae038cb0 DJ |
21176 | } |
21177 | ||
21178 | /* Free all cached compilation units. */ | |
21179 | ||
21180 | static void | |
21181 | free_cached_comp_units (void *data) | |
21182 | { | |
21183 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
21184 | ||
21185 | per_cu = dwarf2_per_objfile->read_in_chain; | |
21186 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
21187 | while (per_cu != NULL) | |
21188 | { | |
21189 | struct dwarf2_per_cu_data *next_cu; | |
21190 | ||
21191 | next_cu = per_cu->cu->read_in_chain; | |
21192 | ||
68dc6402 | 21193 | free_heap_comp_unit (per_cu->cu); |
ae038cb0 DJ |
21194 | *last_chain = next_cu; |
21195 | ||
21196 | per_cu = next_cu; | |
21197 | } | |
21198 | } | |
21199 | ||
21200 | /* Increase the age counter on each cached compilation unit, and free | |
21201 | any that are too old. */ | |
21202 | ||
21203 | static void | |
21204 | age_cached_comp_units (void) | |
21205 | { | |
21206 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
21207 | ||
21208 | dwarf2_clear_marks (dwarf2_per_objfile->read_in_chain); | |
21209 | per_cu = dwarf2_per_objfile->read_in_chain; | |
21210 | while (per_cu != NULL) | |
21211 | { | |
21212 | per_cu->cu->last_used ++; | |
21213 | if (per_cu->cu->last_used <= dwarf2_max_cache_age) | |
21214 | dwarf2_mark (per_cu->cu); | |
21215 | per_cu = per_cu->cu->read_in_chain; | |
21216 | } | |
21217 | ||
21218 | per_cu = dwarf2_per_objfile->read_in_chain; | |
21219 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
21220 | while (per_cu != NULL) | |
21221 | { | |
21222 | struct dwarf2_per_cu_data *next_cu; | |
21223 | ||
21224 | next_cu = per_cu->cu->read_in_chain; | |
21225 | ||
21226 | if (!per_cu->cu->mark) | |
21227 | { | |
68dc6402 | 21228 | free_heap_comp_unit (per_cu->cu); |
ae038cb0 DJ |
21229 | *last_chain = next_cu; |
21230 | } | |
21231 | else | |
21232 | last_chain = &per_cu->cu->read_in_chain; | |
21233 | ||
21234 | per_cu = next_cu; | |
21235 | } | |
21236 | } | |
21237 | ||
21238 | /* Remove a single compilation unit from the cache. */ | |
21239 | ||
21240 | static void | |
dee91e82 | 21241 | free_one_cached_comp_unit (struct dwarf2_per_cu_data *target_per_cu) |
ae038cb0 DJ |
21242 | { |
21243 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
21244 | ||
21245 | per_cu = dwarf2_per_objfile->read_in_chain; | |
21246 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
21247 | while (per_cu != NULL) | |
21248 | { | |
21249 | struct dwarf2_per_cu_data *next_cu; | |
21250 | ||
21251 | next_cu = per_cu->cu->read_in_chain; | |
21252 | ||
dee91e82 | 21253 | if (per_cu == target_per_cu) |
ae038cb0 | 21254 | { |
68dc6402 | 21255 | free_heap_comp_unit (per_cu->cu); |
dee91e82 | 21256 | per_cu->cu = NULL; |
ae038cb0 DJ |
21257 | *last_chain = next_cu; |
21258 | break; | |
21259 | } | |
21260 | else | |
21261 | last_chain = &per_cu->cu->read_in_chain; | |
21262 | ||
21263 | per_cu = next_cu; | |
21264 | } | |
21265 | } | |
21266 | ||
fe3e1990 DJ |
21267 | /* Release all extra memory associated with OBJFILE. */ |
21268 | ||
21269 | void | |
21270 | dwarf2_free_objfile (struct objfile *objfile) | |
21271 | { | |
21272 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); | |
21273 | ||
21274 | if (dwarf2_per_objfile == NULL) | |
21275 | return; | |
21276 | ||
21277 | /* Cached DIE trees use xmalloc and the comp_unit_obstack. */ | |
21278 | free_cached_comp_units (NULL); | |
21279 | ||
7b9f3c50 DE |
21280 | if (dwarf2_per_objfile->quick_file_names_table) |
21281 | htab_delete (dwarf2_per_objfile->quick_file_names_table); | |
9291a0cd | 21282 | |
fe3e1990 DJ |
21283 | /* Everything else should be on the objfile obstack. */ |
21284 | } | |
21285 | ||
dee91e82 DE |
21286 | /* A set of CU "per_cu" pointer, DIE offset, and GDB type pointer. |
21287 | We store these in a hash table separate from the DIEs, and preserve them | |
21288 | when the DIEs are flushed out of cache. | |
21289 | ||
21290 | The CU "per_cu" pointer is needed because offset alone is not enough to | |
3019eac3 | 21291 | uniquely identify the type. A file may have multiple .debug_types sections, |
c88ee1f0 DE |
21292 | or the type may come from a DWO file. Furthermore, while it's more logical |
21293 | to use per_cu->section+offset, with Fission the section with the data is in | |
21294 | the DWO file but we don't know that section at the point we need it. | |
21295 | We have to use something in dwarf2_per_cu_data (or the pointer to it) | |
21296 | because we can enter the lookup routine, get_die_type_at_offset, from | |
21297 | outside this file, and thus won't necessarily have PER_CU->cu. | |
21298 | Fortunately, PER_CU is stable for the life of the objfile. */ | |
1c379e20 | 21299 | |
dee91e82 | 21300 | struct dwarf2_per_cu_offset_and_type |
1c379e20 | 21301 | { |
dee91e82 | 21302 | const struct dwarf2_per_cu_data *per_cu; |
b64f50a1 | 21303 | sect_offset offset; |
1c379e20 DJ |
21304 | struct type *type; |
21305 | }; | |
21306 | ||
dee91e82 | 21307 | /* Hash function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
21308 | |
21309 | static hashval_t | |
dee91e82 | 21310 | per_cu_offset_and_type_hash (const void *item) |
1c379e20 | 21311 | { |
dee91e82 | 21312 | const struct dwarf2_per_cu_offset_and_type *ofs = item; |
9a619af0 | 21313 | |
dee91e82 | 21314 | return (uintptr_t) ofs->per_cu + ofs->offset.sect_off; |
1c379e20 DJ |
21315 | } |
21316 | ||
dee91e82 | 21317 | /* Equality function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
21318 | |
21319 | static int | |
dee91e82 | 21320 | per_cu_offset_and_type_eq (const void *item_lhs, const void *item_rhs) |
1c379e20 | 21321 | { |
dee91e82 DE |
21322 | const struct dwarf2_per_cu_offset_and_type *ofs_lhs = item_lhs; |
21323 | const struct dwarf2_per_cu_offset_and_type *ofs_rhs = item_rhs; | |
9a619af0 | 21324 | |
dee91e82 DE |
21325 | return (ofs_lhs->per_cu == ofs_rhs->per_cu |
21326 | && ofs_lhs->offset.sect_off == ofs_rhs->offset.sect_off); | |
1c379e20 DJ |
21327 | } |
21328 | ||
21329 | /* Set the type associated with DIE to TYPE. Save it in CU's hash | |
7e314c57 JK |
21330 | table if necessary. For convenience, return TYPE. |
21331 | ||
21332 | The DIEs reading must have careful ordering to: | |
21333 | * Not cause infite loops trying to read in DIEs as a prerequisite for | |
21334 | reading current DIE. | |
21335 | * Not trying to dereference contents of still incompletely read in types | |
21336 | while reading in other DIEs. | |
21337 | * Enable referencing still incompletely read in types just by a pointer to | |
21338 | the type without accessing its fields. | |
21339 | ||
21340 | Therefore caller should follow these rules: | |
21341 | * Try to fetch any prerequisite types we may need to build this DIE type | |
21342 | before building the type and calling set_die_type. | |
e71ec853 | 21343 | * After building type call set_die_type for current DIE as soon as |
7e314c57 JK |
21344 | possible before fetching more types to complete the current type. |
21345 | * Make the type as complete as possible before fetching more types. */ | |
1c379e20 | 21346 | |
f792889a | 21347 | static struct type * |
1c379e20 DJ |
21348 | set_die_type (struct die_info *die, struct type *type, struct dwarf2_cu *cu) |
21349 | { | |
dee91e82 | 21350 | struct dwarf2_per_cu_offset_and_type **slot, ofs; |
673bfd45 | 21351 | struct objfile *objfile = cu->objfile; |
1c379e20 | 21352 | |
b4ba55a1 JB |
21353 | /* For Ada types, make sure that the gnat-specific data is always |
21354 | initialized (if not already set). There are a few types where | |
21355 | we should not be doing so, because the type-specific area is | |
21356 | already used to hold some other piece of info (eg: TYPE_CODE_FLT | |
21357 | where the type-specific area is used to store the floatformat). | |
21358 | But this is not a problem, because the gnat-specific information | |
21359 | is actually not needed for these types. */ | |
21360 | if (need_gnat_info (cu) | |
21361 | && TYPE_CODE (type) != TYPE_CODE_FUNC | |
21362 | && TYPE_CODE (type) != TYPE_CODE_FLT | |
21363 | && !HAVE_GNAT_AUX_INFO (type)) | |
21364 | INIT_GNAT_SPECIFIC (type); | |
21365 | ||
dee91e82 | 21366 | if (dwarf2_per_objfile->die_type_hash == NULL) |
f792889a | 21367 | { |
dee91e82 DE |
21368 | dwarf2_per_objfile->die_type_hash = |
21369 | htab_create_alloc_ex (127, | |
21370 | per_cu_offset_and_type_hash, | |
21371 | per_cu_offset_and_type_eq, | |
21372 | NULL, | |
21373 | &objfile->objfile_obstack, | |
21374 | hashtab_obstack_allocate, | |
21375 | dummy_obstack_deallocate); | |
f792889a | 21376 | } |
1c379e20 | 21377 | |
dee91e82 | 21378 | ofs.per_cu = cu->per_cu; |
1c379e20 DJ |
21379 | ofs.offset = die->offset; |
21380 | ofs.type = type; | |
dee91e82 DE |
21381 | slot = (struct dwarf2_per_cu_offset_and_type **) |
21382 | htab_find_slot (dwarf2_per_objfile->die_type_hash, &ofs, INSERT); | |
7e314c57 JK |
21383 | if (*slot) |
21384 | complaint (&symfile_complaints, | |
21385 | _("A problem internal to GDB: DIE 0x%x has type already set"), | |
b64f50a1 | 21386 | die->offset.sect_off); |
673bfd45 | 21387 | *slot = obstack_alloc (&objfile->objfile_obstack, sizeof (**slot)); |
1c379e20 | 21388 | **slot = ofs; |
f792889a | 21389 | return type; |
1c379e20 DJ |
21390 | } |
21391 | ||
02142a6c DE |
21392 | /* Look up the type for the die at OFFSET in PER_CU in die_type_hash, |
21393 | or return NULL if the die does not have a saved type. */ | |
1c379e20 DJ |
21394 | |
21395 | static struct type * | |
b64f50a1 | 21396 | get_die_type_at_offset (sect_offset offset, |
673bfd45 | 21397 | struct dwarf2_per_cu_data *per_cu) |
1c379e20 | 21398 | { |
dee91e82 | 21399 | struct dwarf2_per_cu_offset_and_type *slot, ofs; |
f792889a | 21400 | |
dee91e82 | 21401 | if (dwarf2_per_objfile->die_type_hash == NULL) |
f792889a | 21402 | return NULL; |
1c379e20 | 21403 | |
dee91e82 | 21404 | ofs.per_cu = per_cu; |
673bfd45 | 21405 | ofs.offset = offset; |
dee91e82 | 21406 | slot = htab_find (dwarf2_per_objfile->die_type_hash, &ofs); |
1c379e20 DJ |
21407 | if (slot) |
21408 | return slot->type; | |
21409 | else | |
21410 | return NULL; | |
21411 | } | |
21412 | ||
02142a6c | 21413 | /* Look up the type for DIE in CU in die_type_hash, |
673bfd45 DE |
21414 | or return NULL if DIE does not have a saved type. */ |
21415 | ||
21416 | static struct type * | |
21417 | get_die_type (struct die_info *die, struct dwarf2_cu *cu) | |
21418 | { | |
21419 | return get_die_type_at_offset (die->offset, cu->per_cu); | |
21420 | } | |
21421 | ||
10b3939b DJ |
21422 | /* Add a dependence relationship from CU to REF_PER_CU. */ |
21423 | ||
21424 | static void | |
21425 | dwarf2_add_dependence (struct dwarf2_cu *cu, | |
21426 | struct dwarf2_per_cu_data *ref_per_cu) | |
21427 | { | |
21428 | void **slot; | |
21429 | ||
21430 | if (cu->dependencies == NULL) | |
21431 | cu->dependencies | |
21432 | = htab_create_alloc_ex (5, htab_hash_pointer, htab_eq_pointer, | |
21433 | NULL, &cu->comp_unit_obstack, | |
21434 | hashtab_obstack_allocate, | |
21435 | dummy_obstack_deallocate); | |
21436 | ||
21437 | slot = htab_find_slot (cu->dependencies, ref_per_cu, INSERT); | |
21438 | if (*slot == NULL) | |
21439 | *slot = ref_per_cu; | |
21440 | } | |
1c379e20 | 21441 | |
f504f079 DE |
21442 | /* Subroutine of dwarf2_mark to pass to htab_traverse. |
21443 | Set the mark field in every compilation unit in the | |
ae038cb0 DJ |
21444 | cache that we must keep because we are keeping CU. */ |
21445 | ||
10b3939b DJ |
21446 | static int |
21447 | dwarf2_mark_helper (void **slot, void *data) | |
21448 | { | |
21449 | struct dwarf2_per_cu_data *per_cu; | |
21450 | ||
21451 | per_cu = (struct dwarf2_per_cu_data *) *slot; | |
d07ed419 JK |
21452 | |
21453 | /* cu->dependencies references may not yet have been ever read if QUIT aborts | |
21454 | reading of the chain. As such dependencies remain valid it is not much | |
21455 | useful to track and undo them during QUIT cleanups. */ | |
21456 | if (per_cu->cu == NULL) | |
21457 | return 1; | |
21458 | ||
10b3939b DJ |
21459 | if (per_cu->cu->mark) |
21460 | return 1; | |
21461 | per_cu->cu->mark = 1; | |
21462 | ||
21463 | if (per_cu->cu->dependencies != NULL) | |
21464 | htab_traverse (per_cu->cu->dependencies, dwarf2_mark_helper, NULL); | |
21465 | ||
21466 | return 1; | |
21467 | } | |
21468 | ||
f504f079 DE |
21469 | /* Set the mark field in CU and in every other compilation unit in the |
21470 | cache that we must keep because we are keeping CU. */ | |
21471 | ||
ae038cb0 DJ |
21472 | static void |
21473 | dwarf2_mark (struct dwarf2_cu *cu) | |
21474 | { | |
21475 | if (cu->mark) | |
21476 | return; | |
21477 | cu->mark = 1; | |
10b3939b DJ |
21478 | if (cu->dependencies != NULL) |
21479 | htab_traverse (cu->dependencies, dwarf2_mark_helper, NULL); | |
ae038cb0 DJ |
21480 | } |
21481 | ||
21482 | static void | |
21483 | dwarf2_clear_marks (struct dwarf2_per_cu_data *per_cu) | |
21484 | { | |
21485 | while (per_cu) | |
21486 | { | |
21487 | per_cu->cu->mark = 0; | |
21488 | per_cu = per_cu->cu->read_in_chain; | |
21489 | } | |
72bf9492 DJ |
21490 | } |
21491 | ||
72bf9492 DJ |
21492 | /* Trivial hash function for partial_die_info: the hash value of a DIE |
21493 | is its offset in .debug_info for this objfile. */ | |
21494 | ||
21495 | static hashval_t | |
21496 | partial_die_hash (const void *item) | |
21497 | { | |
21498 | const struct partial_die_info *part_die = item; | |
9a619af0 | 21499 | |
b64f50a1 | 21500 | return part_die->offset.sect_off; |
72bf9492 DJ |
21501 | } |
21502 | ||
21503 | /* Trivial comparison function for partial_die_info structures: two DIEs | |
21504 | are equal if they have the same offset. */ | |
21505 | ||
21506 | static int | |
21507 | partial_die_eq (const void *item_lhs, const void *item_rhs) | |
21508 | { | |
21509 | const struct partial_die_info *part_die_lhs = item_lhs; | |
21510 | const struct partial_die_info *part_die_rhs = item_rhs; | |
9a619af0 | 21511 | |
b64f50a1 | 21512 | return part_die_lhs->offset.sect_off == part_die_rhs->offset.sect_off; |
72bf9492 DJ |
21513 | } |
21514 | ||
ae038cb0 DJ |
21515 | static struct cmd_list_element *set_dwarf2_cmdlist; |
21516 | static struct cmd_list_element *show_dwarf2_cmdlist; | |
21517 | ||
21518 | static void | |
21519 | set_dwarf2_cmd (char *args, int from_tty) | |
21520 | { | |
21521 | help_list (set_dwarf2_cmdlist, "maintenance set dwarf2 ", -1, gdb_stdout); | |
21522 | } | |
21523 | ||
21524 | static void | |
21525 | show_dwarf2_cmd (char *args, int from_tty) | |
6e70227d | 21526 | { |
ae038cb0 DJ |
21527 | cmd_show_list (show_dwarf2_cmdlist, from_tty, ""); |
21528 | } | |
21529 | ||
4bf44c1c | 21530 | /* Free data associated with OBJFILE, if necessary. */ |
dce234bc PP |
21531 | |
21532 | static void | |
c1bd65d0 | 21533 | dwarf2_per_objfile_free (struct objfile *objfile, void *d) |
dce234bc PP |
21534 | { |
21535 | struct dwarf2_per_objfile *data = d; | |
8b70b953 | 21536 | int ix; |
8b70b953 | 21537 | |
626f2d1c TT |
21538 | /* Make sure we don't accidentally use dwarf2_per_objfile while |
21539 | cleaning up. */ | |
21540 | dwarf2_per_objfile = NULL; | |
21541 | ||
59b0c7c1 JB |
21542 | for (ix = 0; ix < data->n_comp_units; ++ix) |
21543 | VEC_free (dwarf2_per_cu_ptr, data->all_comp_units[ix]->imported_symtabs); | |
796a7ff8 | 21544 | |
59b0c7c1 | 21545 | for (ix = 0; ix < data->n_type_units; ++ix) |
796a7ff8 | 21546 | VEC_free (dwarf2_per_cu_ptr, |
59b0c7c1 JB |
21547 | data->all_type_units[ix]->per_cu.imported_symtabs); |
21548 | xfree (data->all_type_units); | |
95554aad | 21549 | |
8b70b953 | 21550 | VEC_free (dwarf2_section_info_def, data->types); |
3019eac3 DE |
21551 | |
21552 | if (data->dwo_files) | |
21553 | free_dwo_files (data->dwo_files, objfile); | |
5c6fa7ab DE |
21554 | if (data->dwp_file) |
21555 | gdb_bfd_unref (data->dwp_file->dbfd); | |
36586728 TT |
21556 | |
21557 | if (data->dwz_file && data->dwz_file->dwz_bfd) | |
21558 | gdb_bfd_unref (data->dwz_file->dwz_bfd); | |
9291a0cd TT |
21559 | } |
21560 | ||
21561 | \f | |
ae2de4f8 | 21562 | /* The "save gdb-index" command. */ |
9291a0cd TT |
21563 | |
21564 | /* The contents of the hash table we create when building the string | |
21565 | table. */ | |
21566 | struct strtab_entry | |
21567 | { | |
21568 | offset_type offset; | |
21569 | const char *str; | |
21570 | }; | |
21571 | ||
559a7a62 JK |
21572 | /* Hash function for a strtab_entry. |
21573 | ||
21574 | Function is used only during write_hash_table so no index format backward | |
21575 | compatibility is needed. */ | |
b89be57b | 21576 | |
9291a0cd TT |
21577 | static hashval_t |
21578 | hash_strtab_entry (const void *e) | |
21579 | { | |
21580 | const struct strtab_entry *entry = e; | |
559a7a62 | 21581 | return mapped_index_string_hash (INT_MAX, entry->str); |
9291a0cd TT |
21582 | } |
21583 | ||
21584 | /* Equality function for a strtab_entry. */ | |
b89be57b | 21585 | |
9291a0cd TT |
21586 | static int |
21587 | eq_strtab_entry (const void *a, const void *b) | |
21588 | { | |
21589 | const struct strtab_entry *ea = a; | |
21590 | const struct strtab_entry *eb = b; | |
21591 | return !strcmp (ea->str, eb->str); | |
21592 | } | |
21593 | ||
21594 | /* Create a strtab_entry hash table. */ | |
b89be57b | 21595 | |
9291a0cd TT |
21596 | static htab_t |
21597 | create_strtab (void) | |
21598 | { | |
21599 | return htab_create_alloc (100, hash_strtab_entry, eq_strtab_entry, | |
21600 | xfree, xcalloc, xfree); | |
21601 | } | |
21602 | ||
21603 | /* Add a string to the constant pool. Return the string's offset in | |
21604 | host order. */ | |
b89be57b | 21605 | |
9291a0cd TT |
21606 | static offset_type |
21607 | add_string (htab_t table, struct obstack *cpool, const char *str) | |
21608 | { | |
21609 | void **slot; | |
21610 | struct strtab_entry entry; | |
21611 | struct strtab_entry *result; | |
21612 | ||
21613 | entry.str = str; | |
21614 | slot = htab_find_slot (table, &entry, INSERT); | |
21615 | if (*slot) | |
21616 | result = *slot; | |
21617 | else | |
21618 | { | |
21619 | result = XNEW (struct strtab_entry); | |
21620 | result->offset = obstack_object_size (cpool); | |
21621 | result->str = str; | |
21622 | obstack_grow_str0 (cpool, str); | |
21623 | *slot = result; | |
21624 | } | |
21625 | return result->offset; | |
21626 | } | |
21627 | ||
21628 | /* An entry in the symbol table. */ | |
21629 | struct symtab_index_entry | |
21630 | { | |
21631 | /* The name of the symbol. */ | |
21632 | const char *name; | |
21633 | /* The offset of the name in the constant pool. */ | |
21634 | offset_type index_offset; | |
21635 | /* A sorted vector of the indices of all the CUs that hold an object | |
21636 | of this name. */ | |
21637 | VEC (offset_type) *cu_indices; | |
21638 | }; | |
21639 | ||
21640 | /* The symbol table. This is a power-of-2-sized hash table. */ | |
21641 | struct mapped_symtab | |
21642 | { | |
21643 | offset_type n_elements; | |
21644 | offset_type size; | |
21645 | struct symtab_index_entry **data; | |
21646 | }; | |
21647 | ||
21648 | /* Hash function for a symtab_index_entry. */ | |
b89be57b | 21649 | |
9291a0cd TT |
21650 | static hashval_t |
21651 | hash_symtab_entry (const void *e) | |
21652 | { | |
21653 | const struct symtab_index_entry *entry = e; | |
21654 | return iterative_hash (VEC_address (offset_type, entry->cu_indices), | |
21655 | sizeof (offset_type) * VEC_length (offset_type, | |
21656 | entry->cu_indices), | |
21657 | 0); | |
21658 | } | |
21659 | ||
21660 | /* Equality function for a symtab_index_entry. */ | |
b89be57b | 21661 | |
9291a0cd TT |
21662 | static int |
21663 | eq_symtab_entry (const void *a, const void *b) | |
21664 | { | |
21665 | const struct symtab_index_entry *ea = a; | |
21666 | const struct symtab_index_entry *eb = b; | |
21667 | int len = VEC_length (offset_type, ea->cu_indices); | |
21668 | if (len != VEC_length (offset_type, eb->cu_indices)) | |
21669 | return 0; | |
21670 | return !memcmp (VEC_address (offset_type, ea->cu_indices), | |
21671 | VEC_address (offset_type, eb->cu_indices), | |
21672 | sizeof (offset_type) * len); | |
21673 | } | |
21674 | ||
21675 | /* Destroy a symtab_index_entry. */ | |
b89be57b | 21676 | |
9291a0cd TT |
21677 | static void |
21678 | delete_symtab_entry (void *p) | |
21679 | { | |
21680 | struct symtab_index_entry *entry = p; | |
21681 | VEC_free (offset_type, entry->cu_indices); | |
21682 | xfree (entry); | |
21683 | } | |
21684 | ||
21685 | /* Create a hash table holding symtab_index_entry objects. */ | |
b89be57b | 21686 | |
9291a0cd | 21687 | static htab_t |
3876f04e | 21688 | create_symbol_hash_table (void) |
9291a0cd TT |
21689 | { |
21690 | return htab_create_alloc (100, hash_symtab_entry, eq_symtab_entry, | |
21691 | delete_symtab_entry, xcalloc, xfree); | |
21692 | } | |
21693 | ||
21694 | /* Create a new mapped symtab object. */ | |
b89be57b | 21695 | |
9291a0cd TT |
21696 | static struct mapped_symtab * |
21697 | create_mapped_symtab (void) | |
21698 | { | |
21699 | struct mapped_symtab *symtab = XNEW (struct mapped_symtab); | |
21700 | symtab->n_elements = 0; | |
21701 | symtab->size = 1024; | |
21702 | symtab->data = XCNEWVEC (struct symtab_index_entry *, symtab->size); | |
21703 | return symtab; | |
21704 | } | |
21705 | ||
21706 | /* Destroy a mapped_symtab. */ | |
b89be57b | 21707 | |
9291a0cd TT |
21708 | static void |
21709 | cleanup_mapped_symtab (void *p) | |
21710 | { | |
21711 | struct mapped_symtab *symtab = p; | |
21712 | /* The contents of the array are freed when the other hash table is | |
21713 | destroyed. */ | |
21714 | xfree (symtab->data); | |
21715 | xfree (symtab); | |
21716 | } | |
21717 | ||
21718 | /* Find a slot in SYMTAB for the symbol NAME. Returns a pointer to | |
559a7a62 JK |
21719 | the slot. |
21720 | ||
21721 | Function is used only during write_hash_table so no index format backward | |
21722 | compatibility is needed. */ | |
b89be57b | 21723 | |
9291a0cd TT |
21724 | static struct symtab_index_entry ** |
21725 | find_slot (struct mapped_symtab *symtab, const char *name) | |
21726 | { | |
559a7a62 | 21727 | offset_type index, step, hash = mapped_index_string_hash (INT_MAX, name); |
9291a0cd TT |
21728 | |
21729 | index = hash & (symtab->size - 1); | |
21730 | step = ((hash * 17) & (symtab->size - 1)) | 1; | |
21731 | ||
21732 | for (;;) | |
21733 | { | |
21734 | if (!symtab->data[index] || !strcmp (name, symtab->data[index]->name)) | |
21735 | return &symtab->data[index]; | |
21736 | index = (index + step) & (symtab->size - 1); | |
21737 | } | |
21738 | } | |
21739 | ||
21740 | /* Expand SYMTAB's hash table. */ | |
b89be57b | 21741 | |
9291a0cd TT |
21742 | static void |
21743 | hash_expand (struct mapped_symtab *symtab) | |
21744 | { | |
21745 | offset_type old_size = symtab->size; | |
21746 | offset_type i; | |
21747 | struct symtab_index_entry **old_entries = symtab->data; | |
21748 | ||
21749 | symtab->size *= 2; | |
21750 | symtab->data = XCNEWVEC (struct symtab_index_entry *, symtab->size); | |
21751 | ||
21752 | for (i = 0; i < old_size; ++i) | |
21753 | { | |
21754 | if (old_entries[i]) | |
21755 | { | |
21756 | struct symtab_index_entry **slot = find_slot (symtab, | |
21757 | old_entries[i]->name); | |
21758 | *slot = old_entries[i]; | |
21759 | } | |
21760 | } | |
21761 | ||
21762 | xfree (old_entries); | |
21763 | } | |
21764 | ||
156942c7 DE |
21765 | /* Add an entry to SYMTAB. NAME is the name of the symbol. |
21766 | CU_INDEX is the index of the CU in which the symbol appears. | |
21767 | IS_STATIC is one if the symbol is static, otherwise zero (global). */ | |
b89be57b | 21768 | |
9291a0cd TT |
21769 | static void |
21770 | add_index_entry (struct mapped_symtab *symtab, const char *name, | |
156942c7 | 21771 | int is_static, gdb_index_symbol_kind kind, |
9291a0cd TT |
21772 | offset_type cu_index) |
21773 | { | |
21774 | struct symtab_index_entry **slot; | |
156942c7 | 21775 | offset_type cu_index_and_attrs; |
9291a0cd TT |
21776 | |
21777 | ++symtab->n_elements; | |
21778 | if (4 * symtab->n_elements / 3 >= symtab->size) | |
21779 | hash_expand (symtab); | |
21780 | ||
21781 | slot = find_slot (symtab, name); | |
21782 | if (!*slot) | |
21783 | { | |
21784 | *slot = XNEW (struct symtab_index_entry); | |
21785 | (*slot)->name = name; | |
156942c7 | 21786 | /* index_offset is set later. */ |
9291a0cd TT |
21787 | (*slot)->cu_indices = NULL; |
21788 | } | |
156942c7 DE |
21789 | |
21790 | cu_index_and_attrs = 0; | |
21791 | DW2_GDB_INDEX_CU_SET_VALUE (cu_index_and_attrs, cu_index); | |
21792 | DW2_GDB_INDEX_SYMBOL_STATIC_SET_VALUE (cu_index_and_attrs, is_static); | |
21793 | DW2_GDB_INDEX_SYMBOL_KIND_SET_VALUE (cu_index_and_attrs, kind); | |
21794 | ||
21795 | /* We don't want to record an index value twice as we want to avoid the | |
21796 | duplication. | |
21797 | We process all global symbols and then all static symbols | |
21798 | (which would allow us to avoid the duplication by only having to check | |
21799 | the last entry pushed), but a symbol could have multiple kinds in one CU. | |
21800 | To keep things simple we don't worry about the duplication here and | |
21801 | sort and uniqufy the list after we've processed all symbols. */ | |
21802 | VEC_safe_push (offset_type, (*slot)->cu_indices, cu_index_and_attrs); | |
21803 | } | |
21804 | ||
21805 | /* qsort helper routine for uniquify_cu_indices. */ | |
21806 | ||
21807 | static int | |
21808 | offset_type_compare (const void *ap, const void *bp) | |
21809 | { | |
21810 | offset_type a = *(offset_type *) ap; | |
21811 | offset_type b = *(offset_type *) bp; | |
21812 | ||
21813 | return (a > b) - (b > a); | |
21814 | } | |
21815 | ||
21816 | /* Sort and remove duplicates of all symbols' cu_indices lists. */ | |
21817 | ||
21818 | static void | |
21819 | uniquify_cu_indices (struct mapped_symtab *symtab) | |
21820 | { | |
21821 | int i; | |
21822 | ||
21823 | for (i = 0; i < symtab->size; ++i) | |
21824 | { | |
21825 | struct symtab_index_entry *entry = symtab->data[i]; | |
21826 | ||
21827 | if (entry | |
21828 | && entry->cu_indices != NULL) | |
21829 | { | |
21830 | unsigned int next_to_insert, next_to_check; | |
21831 | offset_type last_value; | |
21832 | ||
21833 | qsort (VEC_address (offset_type, entry->cu_indices), | |
21834 | VEC_length (offset_type, entry->cu_indices), | |
21835 | sizeof (offset_type), offset_type_compare); | |
21836 | ||
21837 | last_value = VEC_index (offset_type, entry->cu_indices, 0); | |
21838 | next_to_insert = 1; | |
21839 | for (next_to_check = 1; | |
21840 | next_to_check < VEC_length (offset_type, entry->cu_indices); | |
21841 | ++next_to_check) | |
21842 | { | |
21843 | if (VEC_index (offset_type, entry->cu_indices, next_to_check) | |
21844 | != last_value) | |
21845 | { | |
21846 | last_value = VEC_index (offset_type, entry->cu_indices, | |
21847 | next_to_check); | |
21848 | VEC_replace (offset_type, entry->cu_indices, next_to_insert, | |
21849 | last_value); | |
21850 | ++next_to_insert; | |
21851 | } | |
21852 | } | |
21853 | VEC_truncate (offset_type, entry->cu_indices, next_to_insert); | |
21854 | } | |
21855 | } | |
9291a0cd TT |
21856 | } |
21857 | ||
21858 | /* Add a vector of indices to the constant pool. */ | |
b89be57b | 21859 | |
9291a0cd | 21860 | static offset_type |
3876f04e | 21861 | add_indices_to_cpool (htab_t symbol_hash_table, struct obstack *cpool, |
9291a0cd TT |
21862 | struct symtab_index_entry *entry) |
21863 | { | |
21864 | void **slot; | |
21865 | ||
3876f04e | 21866 | slot = htab_find_slot (symbol_hash_table, entry, INSERT); |
9291a0cd TT |
21867 | if (!*slot) |
21868 | { | |
21869 | offset_type len = VEC_length (offset_type, entry->cu_indices); | |
21870 | offset_type val = MAYBE_SWAP (len); | |
21871 | offset_type iter; | |
21872 | int i; | |
21873 | ||
21874 | *slot = entry; | |
21875 | entry->index_offset = obstack_object_size (cpool); | |
21876 | ||
21877 | obstack_grow (cpool, &val, sizeof (val)); | |
21878 | for (i = 0; | |
21879 | VEC_iterate (offset_type, entry->cu_indices, i, iter); | |
21880 | ++i) | |
21881 | { | |
21882 | val = MAYBE_SWAP (iter); | |
21883 | obstack_grow (cpool, &val, sizeof (val)); | |
21884 | } | |
21885 | } | |
21886 | else | |
21887 | { | |
21888 | struct symtab_index_entry *old_entry = *slot; | |
21889 | entry->index_offset = old_entry->index_offset; | |
21890 | entry = old_entry; | |
21891 | } | |
21892 | return entry->index_offset; | |
21893 | } | |
21894 | ||
21895 | /* Write the mapped hash table SYMTAB to the obstack OUTPUT, with | |
21896 | constant pool entries going into the obstack CPOOL. */ | |
b89be57b | 21897 | |
9291a0cd TT |
21898 | static void |
21899 | write_hash_table (struct mapped_symtab *symtab, | |
21900 | struct obstack *output, struct obstack *cpool) | |
21901 | { | |
21902 | offset_type i; | |
3876f04e | 21903 | htab_t symbol_hash_table; |
9291a0cd TT |
21904 | htab_t str_table; |
21905 | ||
3876f04e | 21906 | symbol_hash_table = create_symbol_hash_table (); |
9291a0cd | 21907 | str_table = create_strtab (); |
3876f04e | 21908 | |
9291a0cd TT |
21909 | /* We add all the index vectors to the constant pool first, to |
21910 | ensure alignment is ok. */ | |
21911 | for (i = 0; i < symtab->size; ++i) | |
21912 | { | |
21913 | if (symtab->data[i]) | |
3876f04e | 21914 | add_indices_to_cpool (symbol_hash_table, cpool, symtab->data[i]); |
9291a0cd TT |
21915 | } |
21916 | ||
21917 | /* Now write out the hash table. */ | |
21918 | for (i = 0; i < symtab->size; ++i) | |
21919 | { | |
21920 | offset_type str_off, vec_off; | |
21921 | ||
21922 | if (symtab->data[i]) | |
21923 | { | |
21924 | str_off = add_string (str_table, cpool, symtab->data[i]->name); | |
21925 | vec_off = symtab->data[i]->index_offset; | |
21926 | } | |
21927 | else | |
21928 | { | |
21929 | /* While 0 is a valid constant pool index, it is not valid | |
21930 | to have 0 for both offsets. */ | |
21931 | str_off = 0; | |
21932 | vec_off = 0; | |
21933 | } | |
21934 | ||
21935 | str_off = MAYBE_SWAP (str_off); | |
21936 | vec_off = MAYBE_SWAP (vec_off); | |
21937 | ||
21938 | obstack_grow (output, &str_off, sizeof (str_off)); | |
21939 | obstack_grow (output, &vec_off, sizeof (vec_off)); | |
21940 | } | |
21941 | ||
21942 | htab_delete (str_table); | |
3876f04e | 21943 | htab_delete (symbol_hash_table); |
9291a0cd TT |
21944 | } |
21945 | ||
0a5429f6 DE |
21946 | /* Struct to map psymtab to CU index in the index file. */ |
21947 | struct psymtab_cu_index_map | |
21948 | { | |
21949 | struct partial_symtab *psymtab; | |
21950 | unsigned int cu_index; | |
21951 | }; | |
21952 | ||
21953 | static hashval_t | |
21954 | hash_psymtab_cu_index (const void *item) | |
21955 | { | |
21956 | const struct psymtab_cu_index_map *map = item; | |
21957 | ||
21958 | return htab_hash_pointer (map->psymtab); | |
21959 | } | |
21960 | ||
21961 | static int | |
21962 | eq_psymtab_cu_index (const void *item_lhs, const void *item_rhs) | |
21963 | { | |
21964 | const struct psymtab_cu_index_map *lhs = item_lhs; | |
21965 | const struct psymtab_cu_index_map *rhs = item_rhs; | |
21966 | ||
21967 | return lhs->psymtab == rhs->psymtab; | |
21968 | } | |
21969 | ||
21970 | /* Helper struct for building the address table. */ | |
21971 | struct addrmap_index_data | |
21972 | { | |
21973 | struct objfile *objfile; | |
21974 | struct obstack *addr_obstack; | |
21975 | htab_t cu_index_htab; | |
21976 | ||
21977 | /* Non-zero if the previous_* fields are valid. | |
21978 | We can't write an entry until we see the next entry (since it is only then | |
21979 | that we know the end of the entry). */ | |
21980 | int previous_valid; | |
21981 | /* Index of the CU in the table of all CUs in the index file. */ | |
21982 | unsigned int previous_cu_index; | |
0963b4bd | 21983 | /* Start address of the CU. */ |
0a5429f6 DE |
21984 | CORE_ADDR previous_cu_start; |
21985 | }; | |
21986 | ||
21987 | /* Write an address entry to OBSTACK. */ | |
b89be57b | 21988 | |
9291a0cd | 21989 | static void |
0a5429f6 DE |
21990 | add_address_entry (struct objfile *objfile, struct obstack *obstack, |
21991 | CORE_ADDR start, CORE_ADDR end, unsigned int cu_index) | |
9291a0cd | 21992 | { |
0a5429f6 | 21993 | offset_type cu_index_to_write; |
948f8e3d | 21994 | gdb_byte addr[8]; |
9291a0cd TT |
21995 | CORE_ADDR baseaddr; |
21996 | ||
21997 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
21998 | ||
0a5429f6 DE |
21999 | store_unsigned_integer (addr, 8, BFD_ENDIAN_LITTLE, start - baseaddr); |
22000 | obstack_grow (obstack, addr, 8); | |
22001 | store_unsigned_integer (addr, 8, BFD_ENDIAN_LITTLE, end - baseaddr); | |
22002 | obstack_grow (obstack, addr, 8); | |
22003 | cu_index_to_write = MAYBE_SWAP (cu_index); | |
22004 | obstack_grow (obstack, &cu_index_to_write, sizeof (offset_type)); | |
22005 | } | |
22006 | ||
22007 | /* Worker function for traversing an addrmap to build the address table. */ | |
22008 | ||
22009 | static int | |
22010 | add_address_entry_worker (void *datap, CORE_ADDR start_addr, void *obj) | |
22011 | { | |
22012 | struct addrmap_index_data *data = datap; | |
22013 | struct partial_symtab *pst = obj; | |
0a5429f6 DE |
22014 | |
22015 | if (data->previous_valid) | |
22016 | add_address_entry (data->objfile, data->addr_obstack, | |
22017 | data->previous_cu_start, start_addr, | |
22018 | data->previous_cu_index); | |
22019 | ||
22020 | data->previous_cu_start = start_addr; | |
22021 | if (pst != NULL) | |
22022 | { | |
22023 | struct psymtab_cu_index_map find_map, *map; | |
22024 | find_map.psymtab = pst; | |
22025 | map = htab_find (data->cu_index_htab, &find_map); | |
22026 | gdb_assert (map != NULL); | |
22027 | data->previous_cu_index = map->cu_index; | |
22028 | data->previous_valid = 1; | |
22029 | } | |
22030 | else | |
22031 | data->previous_valid = 0; | |
22032 | ||
22033 | return 0; | |
22034 | } | |
22035 | ||
22036 | /* Write OBJFILE's address map to OBSTACK. | |
22037 | CU_INDEX_HTAB is used to map addrmap entries to their CU indices | |
22038 | in the index file. */ | |
22039 | ||
22040 | static void | |
22041 | write_address_map (struct objfile *objfile, struct obstack *obstack, | |
22042 | htab_t cu_index_htab) | |
22043 | { | |
22044 | struct addrmap_index_data addrmap_index_data; | |
22045 | ||
22046 | /* When writing the address table, we have to cope with the fact that | |
22047 | the addrmap iterator only provides the start of a region; we have to | |
22048 | wait until the next invocation to get the start of the next region. */ | |
22049 | ||
22050 | addrmap_index_data.objfile = objfile; | |
22051 | addrmap_index_data.addr_obstack = obstack; | |
22052 | addrmap_index_data.cu_index_htab = cu_index_htab; | |
22053 | addrmap_index_data.previous_valid = 0; | |
22054 | ||
22055 | addrmap_foreach (objfile->psymtabs_addrmap, add_address_entry_worker, | |
22056 | &addrmap_index_data); | |
22057 | ||
22058 | /* It's highly unlikely the last entry (end address = 0xff...ff) | |
22059 | is valid, but we should still handle it. | |
22060 | The end address is recorded as the start of the next region, but that | |
22061 | doesn't work here. To cope we pass 0xff...ff, this is a rare situation | |
22062 | anyway. */ | |
22063 | if (addrmap_index_data.previous_valid) | |
22064 | add_address_entry (objfile, obstack, | |
22065 | addrmap_index_data.previous_cu_start, (CORE_ADDR) -1, | |
22066 | addrmap_index_data.previous_cu_index); | |
9291a0cd TT |
22067 | } |
22068 | ||
156942c7 DE |
22069 | /* Return the symbol kind of PSYM. */ |
22070 | ||
22071 | static gdb_index_symbol_kind | |
22072 | symbol_kind (struct partial_symbol *psym) | |
22073 | { | |
22074 | domain_enum domain = PSYMBOL_DOMAIN (psym); | |
22075 | enum address_class aclass = PSYMBOL_CLASS (psym); | |
22076 | ||
22077 | switch (domain) | |
22078 | { | |
22079 | case VAR_DOMAIN: | |
22080 | switch (aclass) | |
22081 | { | |
22082 | case LOC_BLOCK: | |
22083 | return GDB_INDEX_SYMBOL_KIND_FUNCTION; | |
22084 | case LOC_TYPEDEF: | |
22085 | return GDB_INDEX_SYMBOL_KIND_TYPE; | |
22086 | case LOC_COMPUTED: | |
22087 | case LOC_CONST_BYTES: | |
22088 | case LOC_OPTIMIZED_OUT: | |
22089 | case LOC_STATIC: | |
22090 | return GDB_INDEX_SYMBOL_KIND_VARIABLE; | |
22091 | case LOC_CONST: | |
22092 | /* Note: It's currently impossible to recognize psyms as enum values | |
22093 | short of reading the type info. For now punt. */ | |
22094 | return GDB_INDEX_SYMBOL_KIND_VARIABLE; | |
22095 | default: | |
22096 | /* There are other LOC_FOO values that one might want to classify | |
22097 | as variables, but dwarf2read.c doesn't currently use them. */ | |
22098 | return GDB_INDEX_SYMBOL_KIND_OTHER; | |
22099 | } | |
22100 | case STRUCT_DOMAIN: | |
22101 | return GDB_INDEX_SYMBOL_KIND_TYPE; | |
22102 | default: | |
22103 | return GDB_INDEX_SYMBOL_KIND_OTHER; | |
22104 | } | |
22105 | } | |
22106 | ||
9291a0cd | 22107 | /* Add a list of partial symbols to SYMTAB. */ |
b89be57b | 22108 | |
9291a0cd TT |
22109 | static void |
22110 | write_psymbols (struct mapped_symtab *symtab, | |
987d643c | 22111 | htab_t psyms_seen, |
9291a0cd TT |
22112 | struct partial_symbol **psymp, |
22113 | int count, | |
987d643c TT |
22114 | offset_type cu_index, |
22115 | int is_static) | |
9291a0cd TT |
22116 | { |
22117 | for (; count-- > 0; ++psymp) | |
22118 | { | |
156942c7 DE |
22119 | struct partial_symbol *psym = *psymp; |
22120 | void **slot; | |
987d643c | 22121 | |
156942c7 | 22122 | if (SYMBOL_LANGUAGE (psym) == language_ada) |
9291a0cd | 22123 | error (_("Ada is not currently supported by the index")); |
987d643c | 22124 | |
987d643c | 22125 | /* Only add a given psymbol once. */ |
156942c7 | 22126 | slot = htab_find_slot (psyms_seen, psym, INSERT); |
987d643c TT |
22127 | if (!*slot) |
22128 | { | |
156942c7 DE |
22129 | gdb_index_symbol_kind kind = symbol_kind (psym); |
22130 | ||
22131 | *slot = psym; | |
22132 | add_index_entry (symtab, SYMBOL_SEARCH_NAME (psym), | |
22133 | is_static, kind, cu_index); | |
987d643c | 22134 | } |
9291a0cd TT |
22135 | } |
22136 | } | |
22137 | ||
22138 | /* Write the contents of an ("unfinished") obstack to FILE. Throw an | |
22139 | exception if there is an error. */ | |
b89be57b | 22140 | |
9291a0cd TT |
22141 | static void |
22142 | write_obstack (FILE *file, struct obstack *obstack) | |
22143 | { | |
22144 | if (fwrite (obstack_base (obstack), 1, obstack_object_size (obstack), | |
22145 | file) | |
22146 | != obstack_object_size (obstack)) | |
22147 | error (_("couldn't data write to file")); | |
22148 | } | |
22149 | ||
22150 | /* Unlink a file if the argument is not NULL. */ | |
b89be57b | 22151 | |
9291a0cd TT |
22152 | static void |
22153 | unlink_if_set (void *p) | |
22154 | { | |
22155 | char **filename = p; | |
22156 | if (*filename) | |
22157 | unlink (*filename); | |
22158 | } | |
22159 | ||
1fd400ff TT |
22160 | /* A helper struct used when iterating over debug_types. */ |
22161 | struct signatured_type_index_data | |
22162 | { | |
22163 | struct objfile *objfile; | |
22164 | struct mapped_symtab *symtab; | |
22165 | struct obstack *types_list; | |
987d643c | 22166 | htab_t psyms_seen; |
1fd400ff TT |
22167 | int cu_index; |
22168 | }; | |
22169 | ||
22170 | /* A helper function that writes a single signatured_type to an | |
22171 | obstack. */ | |
b89be57b | 22172 | |
1fd400ff TT |
22173 | static int |
22174 | write_one_signatured_type (void **slot, void *d) | |
22175 | { | |
22176 | struct signatured_type_index_data *info = d; | |
22177 | struct signatured_type *entry = (struct signatured_type *) *slot; | |
0186c6a7 | 22178 | struct partial_symtab *psymtab = entry->per_cu.v.psymtab; |
1fd400ff TT |
22179 | gdb_byte val[8]; |
22180 | ||
22181 | write_psymbols (info->symtab, | |
987d643c | 22182 | info->psyms_seen, |
3e43a32a MS |
22183 | info->objfile->global_psymbols.list |
22184 | + psymtab->globals_offset, | |
987d643c TT |
22185 | psymtab->n_global_syms, info->cu_index, |
22186 | 0); | |
1fd400ff | 22187 | write_psymbols (info->symtab, |
987d643c | 22188 | info->psyms_seen, |
3e43a32a MS |
22189 | info->objfile->static_psymbols.list |
22190 | + psymtab->statics_offset, | |
987d643c TT |
22191 | psymtab->n_static_syms, info->cu_index, |
22192 | 1); | |
1fd400ff | 22193 | |
b64f50a1 JK |
22194 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, |
22195 | entry->per_cu.offset.sect_off); | |
1fd400ff | 22196 | obstack_grow (info->types_list, val, 8); |
3019eac3 DE |
22197 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, |
22198 | entry->type_offset_in_tu.cu_off); | |
1fd400ff TT |
22199 | obstack_grow (info->types_list, val, 8); |
22200 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, entry->signature); | |
22201 | obstack_grow (info->types_list, val, 8); | |
22202 | ||
22203 | ++info->cu_index; | |
22204 | ||
22205 | return 1; | |
22206 | } | |
22207 | ||
95554aad TT |
22208 | /* Recurse into all "included" dependencies and write their symbols as |
22209 | if they appeared in this psymtab. */ | |
22210 | ||
22211 | static void | |
22212 | recursively_write_psymbols (struct objfile *objfile, | |
22213 | struct partial_symtab *psymtab, | |
22214 | struct mapped_symtab *symtab, | |
22215 | htab_t psyms_seen, | |
22216 | offset_type cu_index) | |
22217 | { | |
22218 | int i; | |
22219 | ||
22220 | for (i = 0; i < psymtab->number_of_dependencies; ++i) | |
22221 | if (psymtab->dependencies[i]->user != NULL) | |
22222 | recursively_write_psymbols (objfile, psymtab->dependencies[i], | |
22223 | symtab, psyms_seen, cu_index); | |
22224 | ||
22225 | write_psymbols (symtab, | |
22226 | psyms_seen, | |
22227 | objfile->global_psymbols.list + psymtab->globals_offset, | |
22228 | psymtab->n_global_syms, cu_index, | |
22229 | 0); | |
22230 | write_psymbols (symtab, | |
22231 | psyms_seen, | |
22232 | objfile->static_psymbols.list + psymtab->statics_offset, | |
22233 | psymtab->n_static_syms, cu_index, | |
22234 | 1); | |
22235 | } | |
22236 | ||
9291a0cd | 22237 | /* Create an index file for OBJFILE in the directory DIR. */ |
b89be57b | 22238 | |
9291a0cd TT |
22239 | static void |
22240 | write_psymtabs_to_index (struct objfile *objfile, const char *dir) | |
22241 | { | |
22242 | struct cleanup *cleanup; | |
22243 | char *filename, *cleanup_filename; | |
1fd400ff TT |
22244 | struct obstack contents, addr_obstack, constant_pool, symtab_obstack; |
22245 | struct obstack cu_list, types_cu_list; | |
9291a0cd TT |
22246 | int i; |
22247 | FILE *out_file; | |
22248 | struct mapped_symtab *symtab; | |
22249 | offset_type val, size_of_contents, total_len; | |
22250 | struct stat st; | |
987d643c | 22251 | htab_t psyms_seen; |
0a5429f6 DE |
22252 | htab_t cu_index_htab; |
22253 | struct psymtab_cu_index_map *psymtab_cu_index_map; | |
9291a0cd | 22254 | |
9291a0cd TT |
22255 | if (dwarf2_per_objfile->using_index) |
22256 | error (_("Cannot use an index to create the index")); | |
22257 | ||
8b70b953 TT |
22258 | if (VEC_length (dwarf2_section_info_def, dwarf2_per_objfile->types) > 1) |
22259 | error (_("Cannot make an index when the file has multiple .debug_types sections")); | |
22260 | ||
260b681b DE |
22261 | if (!objfile->psymtabs || !objfile->psymtabs_addrmap) |
22262 | return; | |
22263 | ||
4262abfb JK |
22264 | if (stat (objfile_name (objfile), &st) < 0) |
22265 | perror_with_name (objfile_name (objfile)); | |
9291a0cd | 22266 | |
4262abfb | 22267 | filename = concat (dir, SLASH_STRING, lbasename (objfile_name (objfile)), |
9291a0cd TT |
22268 | INDEX_SUFFIX, (char *) NULL); |
22269 | cleanup = make_cleanup (xfree, filename); | |
22270 | ||
614c279d | 22271 | out_file = gdb_fopen_cloexec (filename, "wb"); |
9291a0cd TT |
22272 | if (!out_file) |
22273 | error (_("Can't open `%s' for writing"), filename); | |
22274 | ||
22275 | cleanup_filename = filename; | |
22276 | make_cleanup (unlink_if_set, &cleanup_filename); | |
22277 | ||
22278 | symtab = create_mapped_symtab (); | |
22279 | make_cleanup (cleanup_mapped_symtab, symtab); | |
22280 | ||
22281 | obstack_init (&addr_obstack); | |
22282 | make_cleanup_obstack_free (&addr_obstack); | |
22283 | ||
22284 | obstack_init (&cu_list); | |
22285 | make_cleanup_obstack_free (&cu_list); | |
22286 | ||
1fd400ff TT |
22287 | obstack_init (&types_cu_list); |
22288 | make_cleanup_obstack_free (&types_cu_list); | |
22289 | ||
987d643c TT |
22290 | psyms_seen = htab_create_alloc (100, htab_hash_pointer, htab_eq_pointer, |
22291 | NULL, xcalloc, xfree); | |
96408a79 | 22292 | make_cleanup_htab_delete (psyms_seen); |
987d643c | 22293 | |
0a5429f6 DE |
22294 | /* While we're scanning CU's create a table that maps a psymtab pointer |
22295 | (which is what addrmap records) to its index (which is what is recorded | |
22296 | in the index file). This will later be needed to write the address | |
22297 | table. */ | |
22298 | cu_index_htab = htab_create_alloc (100, | |
22299 | hash_psymtab_cu_index, | |
22300 | eq_psymtab_cu_index, | |
22301 | NULL, xcalloc, xfree); | |
96408a79 | 22302 | make_cleanup_htab_delete (cu_index_htab); |
0a5429f6 DE |
22303 | psymtab_cu_index_map = (struct psymtab_cu_index_map *) |
22304 | xmalloc (sizeof (struct psymtab_cu_index_map) | |
22305 | * dwarf2_per_objfile->n_comp_units); | |
22306 | make_cleanup (xfree, psymtab_cu_index_map); | |
22307 | ||
22308 | /* The CU list is already sorted, so we don't need to do additional | |
1fd400ff TT |
22309 | work here. Also, the debug_types entries do not appear in |
22310 | all_comp_units, but only in their own hash table. */ | |
9291a0cd TT |
22311 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
22312 | { | |
3e43a32a MS |
22313 | struct dwarf2_per_cu_data *per_cu |
22314 | = dwarf2_per_objfile->all_comp_units[i]; | |
e254ef6a | 22315 | struct partial_symtab *psymtab = per_cu->v.psymtab; |
9291a0cd | 22316 | gdb_byte val[8]; |
0a5429f6 DE |
22317 | struct psymtab_cu_index_map *map; |
22318 | void **slot; | |
9291a0cd | 22319 | |
92fac807 JK |
22320 | /* CU of a shared file from 'dwz -m' may be unused by this main file. |
22321 | It may be referenced from a local scope but in such case it does not | |
22322 | need to be present in .gdb_index. */ | |
22323 | if (psymtab == NULL) | |
22324 | continue; | |
22325 | ||
95554aad TT |
22326 | if (psymtab->user == NULL) |
22327 | recursively_write_psymbols (objfile, psymtab, symtab, psyms_seen, i); | |
9291a0cd | 22328 | |
0a5429f6 DE |
22329 | map = &psymtab_cu_index_map[i]; |
22330 | map->psymtab = psymtab; | |
22331 | map->cu_index = i; | |
22332 | slot = htab_find_slot (cu_index_htab, map, INSERT); | |
22333 | gdb_assert (slot != NULL); | |
22334 | gdb_assert (*slot == NULL); | |
22335 | *slot = map; | |
9291a0cd | 22336 | |
b64f50a1 JK |
22337 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, |
22338 | per_cu->offset.sect_off); | |
9291a0cd | 22339 | obstack_grow (&cu_list, val, 8); |
e254ef6a | 22340 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, per_cu->length); |
9291a0cd TT |
22341 | obstack_grow (&cu_list, val, 8); |
22342 | } | |
22343 | ||
0a5429f6 DE |
22344 | /* Dump the address map. */ |
22345 | write_address_map (objfile, &addr_obstack, cu_index_htab); | |
22346 | ||
1fd400ff TT |
22347 | /* Write out the .debug_type entries, if any. */ |
22348 | if (dwarf2_per_objfile->signatured_types) | |
22349 | { | |
22350 | struct signatured_type_index_data sig_data; | |
22351 | ||
22352 | sig_data.objfile = objfile; | |
22353 | sig_data.symtab = symtab; | |
22354 | sig_data.types_list = &types_cu_list; | |
987d643c | 22355 | sig_data.psyms_seen = psyms_seen; |
1fd400ff TT |
22356 | sig_data.cu_index = dwarf2_per_objfile->n_comp_units; |
22357 | htab_traverse_noresize (dwarf2_per_objfile->signatured_types, | |
22358 | write_one_signatured_type, &sig_data); | |
22359 | } | |
22360 | ||
156942c7 DE |
22361 | /* Now that we've processed all symbols we can shrink their cu_indices |
22362 | lists. */ | |
22363 | uniquify_cu_indices (symtab); | |
22364 | ||
9291a0cd TT |
22365 | obstack_init (&constant_pool); |
22366 | make_cleanup_obstack_free (&constant_pool); | |
22367 | obstack_init (&symtab_obstack); | |
22368 | make_cleanup_obstack_free (&symtab_obstack); | |
22369 | write_hash_table (symtab, &symtab_obstack, &constant_pool); | |
22370 | ||
22371 | obstack_init (&contents); | |
22372 | make_cleanup_obstack_free (&contents); | |
1fd400ff | 22373 | size_of_contents = 6 * sizeof (offset_type); |
9291a0cd TT |
22374 | total_len = size_of_contents; |
22375 | ||
22376 | /* The version number. */ | |
796a7ff8 | 22377 | val = MAYBE_SWAP (8); |
9291a0cd TT |
22378 | obstack_grow (&contents, &val, sizeof (val)); |
22379 | ||
22380 | /* The offset of the CU list from the start of the file. */ | |
22381 | val = MAYBE_SWAP (total_len); | |
22382 | obstack_grow (&contents, &val, sizeof (val)); | |
22383 | total_len += obstack_object_size (&cu_list); | |
22384 | ||
1fd400ff TT |
22385 | /* The offset of the types CU list from the start of the file. */ |
22386 | val = MAYBE_SWAP (total_len); | |
22387 | obstack_grow (&contents, &val, sizeof (val)); | |
22388 | total_len += obstack_object_size (&types_cu_list); | |
22389 | ||
9291a0cd TT |
22390 | /* The offset of the address table from the start of the file. */ |
22391 | val = MAYBE_SWAP (total_len); | |
22392 | obstack_grow (&contents, &val, sizeof (val)); | |
22393 | total_len += obstack_object_size (&addr_obstack); | |
22394 | ||
22395 | /* The offset of the symbol table from the start of the file. */ | |
22396 | val = MAYBE_SWAP (total_len); | |
22397 | obstack_grow (&contents, &val, sizeof (val)); | |
22398 | total_len += obstack_object_size (&symtab_obstack); | |
22399 | ||
22400 | /* The offset of the constant pool from the start of the file. */ | |
22401 | val = MAYBE_SWAP (total_len); | |
22402 | obstack_grow (&contents, &val, sizeof (val)); | |
22403 | total_len += obstack_object_size (&constant_pool); | |
22404 | ||
22405 | gdb_assert (obstack_object_size (&contents) == size_of_contents); | |
22406 | ||
22407 | write_obstack (out_file, &contents); | |
22408 | write_obstack (out_file, &cu_list); | |
1fd400ff | 22409 | write_obstack (out_file, &types_cu_list); |
9291a0cd TT |
22410 | write_obstack (out_file, &addr_obstack); |
22411 | write_obstack (out_file, &symtab_obstack); | |
22412 | write_obstack (out_file, &constant_pool); | |
22413 | ||
22414 | fclose (out_file); | |
22415 | ||
22416 | /* We want to keep the file, so we set cleanup_filename to NULL | |
22417 | here. See unlink_if_set. */ | |
22418 | cleanup_filename = NULL; | |
22419 | ||
22420 | do_cleanups (cleanup); | |
22421 | } | |
22422 | ||
90476074 TT |
22423 | /* Implementation of the `save gdb-index' command. |
22424 | ||
22425 | Note that the file format used by this command is documented in the | |
22426 | GDB manual. Any changes here must be documented there. */ | |
11570e71 | 22427 | |
9291a0cd TT |
22428 | static void |
22429 | save_gdb_index_command (char *arg, int from_tty) | |
22430 | { | |
22431 | struct objfile *objfile; | |
22432 | ||
22433 | if (!arg || !*arg) | |
96d19272 | 22434 | error (_("usage: save gdb-index DIRECTORY")); |
9291a0cd TT |
22435 | |
22436 | ALL_OBJFILES (objfile) | |
22437 | { | |
22438 | struct stat st; | |
22439 | ||
22440 | /* If the objfile does not correspond to an actual file, skip it. */ | |
4262abfb | 22441 | if (stat (objfile_name (objfile), &st) < 0) |
9291a0cd TT |
22442 | continue; |
22443 | ||
22444 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); | |
22445 | if (dwarf2_per_objfile) | |
22446 | { | |
22447 | volatile struct gdb_exception except; | |
22448 | ||
22449 | TRY_CATCH (except, RETURN_MASK_ERROR) | |
22450 | { | |
22451 | write_psymtabs_to_index (objfile, arg); | |
22452 | } | |
22453 | if (except.reason < 0) | |
22454 | exception_fprintf (gdb_stderr, except, | |
22455 | _("Error while writing index for `%s': "), | |
4262abfb | 22456 | objfile_name (objfile)); |
9291a0cd TT |
22457 | } |
22458 | } | |
dce234bc PP |
22459 | } |
22460 | ||
9291a0cd TT |
22461 | \f |
22462 | ||
9eae7c52 TT |
22463 | int dwarf2_always_disassemble; |
22464 | ||
22465 | static void | |
22466 | show_dwarf2_always_disassemble (struct ui_file *file, int from_tty, | |
22467 | struct cmd_list_element *c, const char *value) | |
22468 | { | |
3e43a32a MS |
22469 | fprintf_filtered (file, |
22470 | _("Whether to always disassemble " | |
22471 | "DWARF expressions is %s.\n"), | |
9eae7c52 TT |
22472 | value); |
22473 | } | |
22474 | ||
900e11f9 JK |
22475 | static void |
22476 | show_check_physname (struct ui_file *file, int from_tty, | |
22477 | struct cmd_list_element *c, const char *value) | |
22478 | { | |
22479 | fprintf_filtered (file, | |
22480 | _("Whether to check \"physname\" is %s.\n"), | |
22481 | value); | |
22482 | } | |
22483 | ||
6502dd73 DJ |
22484 | void _initialize_dwarf2_read (void); |
22485 | ||
22486 | void | |
22487 | _initialize_dwarf2_read (void) | |
22488 | { | |
96d19272 JK |
22489 | struct cmd_list_element *c; |
22490 | ||
dce234bc | 22491 | dwarf2_objfile_data_key |
c1bd65d0 | 22492 | = register_objfile_data_with_cleanup (NULL, dwarf2_per_objfile_free); |
ae038cb0 | 22493 | |
1bedd215 AC |
22494 | add_prefix_cmd ("dwarf2", class_maintenance, set_dwarf2_cmd, _("\ |
22495 | Set DWARF 2 specific variables.\n\ | |
22496 | Configure DWARF 2 variables such as the cache size"), | |
ae038cb0 DJ |
22497 | &set_dwarf2_cmdlist, "maintenance set dwarf2 ", |
22498 | 0/*allow-unknown*/, &maintenance_set_cmdlist); | |
22499 | ||
1bedd215 AC |
22500 | add_prefix_cmd ("dwarf2", class_maintenance, show_dwarf2_cmd, _("\ |
22501 | Show DWARF 2 specific variables\n\ | |
22502 | Show DWARF 2 variables such as the cache size"), | |
ae038cb0 DJ |
22503 | &show_dwarf2_cmdlist, "maintenance show dwarf2 ", |
22504 | 0/*allow-unknown*/, &maintenance_show_cmdlist); | |
22505 | ||
22506 | add_setshow_zinteger_cmd ("max-cache-age", class_obscure, | |
7915a72c AC |
22507 | &dwarf2_max_cache_age, _("\ |
22508 | Set the upper bound on the age of cached dwarf2 compilation units."), _("\ | |
22509 | Show the upper bound on the age of cached dwarf2 compilation units."), _("\ | |
22510 | A higher limit means that cached compilation units will be stored\n\ | |
22511 | in memory longer, and more total memory will be used. Zero disables\n\ | |
22512 | caching, which can slow down startup."), | |
2c5b56ce | 22513 | NULL, |
920d2a44 | 22514 | show_dwarf2_max_cache_age, |
2c5b56ce | 22515 | &set_dwarf2_cmdlist, |
ae038cb0 | 22516 | &show_dwarf2_cmdlist); |
d97bc12b | 22517 | |
9eae7c52 TT |
22518 | add_setshow_boolean_cmd ("always-disassemble", class_obscure, |
22519 | &dwarf2_always_disassemble, _("\ | |
22520 | Set whether `info address' always disassembles DWARF expressions."), _("\ | |
22521 | Show whether `info address' always disassembles DWARF expressions."), _("\ | |
22522 | When enabled, DWARF expressions are always printed in an assembly-like\n\ | |
22523 | syntax. When disabled, expressions will be printed in a more\n\ | |
22524 | conversational style, when possible."), | |
22525 | NULL, | |
22526 | show_dwarf2_always_disassemble, | |
22527 | &set_dwarf2_cmdlist, | |
22528 | &show_dwarf2_cmdlist); | |
22529 | ||
73be47f5 | 22530 | add_setshow_zuinteger_cmd ("dwarf2-read", no_class, &dwarf2_read_debug, _("\ |
45cfd468 DE |
22531 | Set debugging of the dwarf2 reader."), _("\ |
22532 | Show debugging of the dwarf2 reader."), _("\ | |
73be47f5 DE |
22533 | When enabled (non-zero), debugging messages are printed during dwarf2\n\ |
22534 | reading and symtab expansion. A value of 1 (one) provides basic\n\ | |
22535 | information. A value greater than 1 provides more verbose information."), | |
45cfd468 DE |
22536 | NULL, |
22537 | NULL, | |
22538 | &setdebuglist, &showdebuglist); | |
22539 | ||
ccce17b0 | 22540 | add_setshow_zuinteger_cmd ("dwarf2-die", no_class, &dwarf2_die_debug, _("\ |
d97bc12b DE |
22541 | Set debugging of the dwarf2 DIE reader."), _("\ |
22542 | Show debugging of the dwarf2 DIE reader."), _("\ | |
22543 | When enabled (non-zero), DIEs are dumped after they are read in.\n\ | |
22544 | The value is the maximum depth to print."), | |
ccce17b0 YQ |
22545 | NULL, |
22546 | NULL, | |
22547 | &setdebuglist, &showdebuglist); | |
9291a0cd | 22548 | |
900e11f9 JK |
22549 | add_setshow_boolean_cmd ("check-physname", no_class, &check_physname, _("\ |
22550 | Set cross-checking of \"physname\" code against demangler."), _("\ | |
22551 | Show cross-checking of \"physname\" code against demangler."), _("\ | |
22552 | When enabled, GDB's internal \"physname\" code is checked against\n\ | |
22553 | the demangler."), | |
22554 | NULL, show_check_physname, | |
22555 | &setdebuglist, &showdebuglist); | |
22556 | ||
e615022a DE |
22557 | add_setshow_boolean_cmd ("use-deprecated-index-sections", |
22558 | no_class, &use_deprecated_index_sections, _("\ | |
22559 | Set whether to use deprecated gdb_index sections."), _("\ | |
22560 | Show whether to use deprecated gdb_index sections."), _("\ | |
22561 | When enabled, deprecated .gdb_index sections are used anyway.\n\ | |
22562 | Normally they are ignored either because of a missing feature or\n\ | |
22563 | performance issue.\n\ | |
22564 | Warning: This option must be enabled before gdb reads the file."), | |
22565 | NULL, | |
22566 | NULL, | |
22567 | &setlist, &showlist); | |
22568 | ||
96d19272 | 22569 | c = add_cmd ("gdb-index", class_files, save_gdb_index_command, |
11570e71 | 22570 | _("\ |
fc1a9d6e | 22571 | Save a gdb-index file.\n\ |
11570e71 | 22572 | Usage: save gdb-index DIRECTORY"), |
96d19272 JK |
22573 | &save_cmdlist); |
22574 | set_cmd_completer (c, filename_completer); | |
f1e6e072 TT |
22575 | |
22576 | dwarf2_locexpr_index = register_symbol_computed_impl (LOC_COMPUTED, | |
22577 | &dwarf2_locexpr_funcs); | |
22578 | dwarf2_loclist_index = register_symbol_computed_impl (LOC_COMPUTED, | |
22579 | &dwarf2_loclist_funcs); | |
22580 | ||
22581 | dwarf2_locexpr_block_index = register_symbol_block_impl (LOC_BLOCK, | |
22582 | &dwarf2_block_frame_base_locexpr_funcs); | |
22583 | dwarf2_loclist_block_index = register_symbol_block_impl (LOC_BLOCK, | |
22584 | &dwarf2_block_frame_base_loclist_funcs); | |
6502dd73 | 22585 | } |